Abstract: The coupling of a drive spindle to be fitted to a driven shaft has a fitting bore provided with liner grooves of suitable width opposed to each other diametrically of the bore and extending in parallel axially thereof. Two wedge-shaped superposed liners are fitted in each of the liner grooves in such a combination that the planar surfaces of the inner liners facing each other provide diametrically opposed parallel planar surfaces defining the fitting bore. The inner liners are movable in parallel radially of the fitting bore by axially moving the outer liners to bring the opposed planar surfaces of the inner liners into intimate fitting contact with parallel planar surfaces formed on the peripheral surface of the driven shaft and opposed to each other diametrically of the shaft. The liners in this state are locked to the coupling, rendering the drive apparatus operable free of oscillation.

Abstract: A knitting machine has a weft thread laying unit for laying weft threads for linking with warp threads by means of needles, comprising a guide bar extending across the machine, and a slider slidable along the bar, the slider having a weft thread guide to lay a weft thread in front of the row of needles. The unit may have at least one pair of oppositely movable sliders to reduce inertia force in the unit.

Abstract: The apparatus comprehends a bath and a pad liquor supply charged thereinto, a guide means disposed within the bath for guiding the goods therethrough, and a steam jacket communicating with a steam source. The jacket lies in vertical disposition upwardly of the bath and has apertured top and bottom walls. A partition disposed within the jacket suspends downwardly from and connects to the jacket top wall in registry with the aperture thereof to define a primary passage through the partition which is open at its upper end to atmosphere and open at its lower end into the jacket, through which primary passage, the goods are passed before passage into the jacket. The jacket and partition cooperantly constrain the steam flow through the jacket in a first downward flow direction exteriorly of the partition in a heat transfer relationship therewith and in a second upward flow direction interiorly of the partition through the primary passage in a direction counter to the downward direction of movement of the goods.

Abstract: The present invention relates to sealing devices and is most expedient to be applied in dyeing-and-finishing processes involved in textile industry. The hermetic seal of the chamber for treatment of bandlike material at an excess pressure has a hollow shell accommodating a pair of driving rollers for traversing the material under treatment, and a sealing device which hermetically divides, along with the rollers, the shell interior into an excess pressure zone communicating with the chamber, and an atmospheric pressure zone communicating with the atmosphere. According to the invention, communication between the atmospheric-pressure zone and the atmosphere is established through the agency of a check valve provided in the shell and made as a flexible sleeve whose bore is adapted for the bandlike material under treatment to freely pass. Such a constructional arrangement provides for reliable hermetic sealing of the chamber for treating bandlike material under an excess pressure.

Abstract: A drum-type machine for the treatment of batchwise textile material, especially a washing machine, with at least one drive drum rotatably supported in an approximately horizontal position having a central opening in one end wall for loading purposes and a central opening in the other wall for unloading purposes, as well as a conveying paddle in the interior for moving the batch of material about within the drum during rotation of the drum in a first direction and for the axial transporting of the batch of material through the unloading aperture in the other direction of rotation of the drum is provided with a sensor having a feeler oriented into the loading and/or unloading aperture, wherein the feeler is effected by the batch of material moving through the loading and/or unloading opening and acts to generate a signal if a part of the batch of material remains in the zone of the aperture after unloading.

Abstract: Apparatus for treating continuous fabric includes a frame on which is mounted an open bath for receiving a treating liquid through which fabric to be treated is passed. An elongate immersion member movably mounted on the frame immerses the fabric in the treating liquid during its passage through the bath, and a pair of squeeze rollers, being an upper and a lower squeeze roller, grip the fabric when it has passed through the bath. At least one roller, preferably the lower squeeze roller, is driven, and at least one roller, preferably the upper squeeze roller is movably mounted on the frame. A driven rewind mandrel is mounted on the frame and the treated fabric having passed through the squeeze rollers is wound thereon. Means are provided for moving the immersion means and the movable squeeze roller their operative and respective inoperative positions.

Abstract: A lock is provided which is adaptable to heavy equipment, such as truck tractors or earth-moving vehicles, for equipment security. The equipment lock includes an elongated shackle with a split ferrule bondingly associated at one end. The split ferrule is received by a casing in which the split ferrule is lockingly engaged by a slidable yoke member actuated both for locking and release by key operation through means of a cam assembly. An enlarged member is at the shackle second end. The heavy equipment lock may be made to be water-tight when locked. In one embodiment, the shackle is flexible and formed into an adjustable bight to secure vehicle wheels. In a second embodiment the shackle is a rigid, "L" shaped bar.

Abstract: A cylinder lock, particularly a rolling gates cylinder lock, which may be mounted, at will, as a right or a left lock. The lock is provided with a sliding bolt which is guided for its movement into locking and unlocking position by a guide block housed inside of the lock casing. To the central portion of the sliding bolt a rack bar is secured, in mesh with the pinion operated by the cylinder of the lock. The said rack bar acts as an abutment member in cooperation with the lock casing in order to limit the sliding movement in both directions of the sliding bolt. Means are provided for fastening the said lock to a rolling gate by using nuts and bolts.

Abstract: A tamper-proof nut assembly for interlocking together the separable parts of a mounting support for a meter for monitoring the flow of liquid from a storage supply thereof to prevent separation of the meter from its support so that it is rendered inoperative to record and register the amount of liquid passing through the supply or delivery line with which the meter is associated, the nut assembly including an elongated tubular member having axially alined integrally formed first and second parts each externally fitted with a revoluble sleeve, one of said parts being adapted for threaded engagement with a bolt for locking together the separable parts of the meter support and the other of said parts being of a polygonal external shape for application of a tightening wrench thereto, the revoluble sleeve which encases the polygonal part of the nut member being removably held in place by a key-actuated tumbler cylinder fitted in the bore of said polygonal part of the nut member.

Abstract: There is disclosed a lock mechanism requiring movement through an enabling combination of preselected, sequential positions for operation. The lock mechanism is preferably embodied in a locking box and includes a latch formed with a pair of opposed hooks that capture a retainer of the box cover. The opposed hooks are carried on separate members yieldably interconnected. Release of the lock requires positioning a ball in an actuation cavity to block movement of one of the members, thereby permitting the hooks to be separated, releasing the retainer pin carried by the box cover. The ball is positioned in the actuation cavity by advance through a torturous passageway of a three-dimensional labyrinth within the box. Passageway defining partitions of the labyrinth have apertures at preselected locations to provide the desired, preselected sequential combination of positions.

Abstract: A skew rolling mill is provided with only two working rollers offset from each other by 180.degree.. Restraining elements are provided between the rollers to prevent lateral bending of the stock being rolled.

Abstract: A cooling tube for cooling a hot rolled wire stock by cooling liquid is divided into a plurality of cooling sections by spaced apart partition members. Each partition member comprises a nozzle like rotary member having an axial passage for passing the wire stock. The inlet opening of the passage is circular having a diameter slightly larger than the major axis of the maximum oval cross-sectional configuration which is formed for the hot rolled wire stock when its size is changed, while the outlet opening is an oval having a major axis equal to the diameter of the inlet opening and a minor axis slightly larger than the diameter of the circular portion of the wire stock having the maximum diameter. The cross-sectional configuration of the passage gradually changes from the inlet opening to the outlet opening to prevent leakage of the cooling liquid.

Abstract: A rolling mill stand, particularly for a rod or bar mill, has, at each side of the pass line, a rotary roll housing which includes a number of fitments each for detachably carrying a roll assembly. By rotating the roll housings, one of the roll assemblies of each roll housing can be brought into a rolling position, in which it is coupled to drive means. In order to change the rolls at the rolling positions, each of the roll housings is rotated to bring a fresh roll assembly into position. The stand has a roll change rig enabling one or more of the roll assemblies of each roll housing to be quickly run out of the stand and replaced by substitute roll assemblies.

Abstract: Pressure roll having a stationary axial supporting member and having a roll shell rotatable about the supporting member, the said shell being supported by hydrostatic supporting elements; the roll shell is mounted to be mobile in all radial directions relatively to the supporting member, and is guided radially relatively to the supporting member only by means of the supporting elements and by means of at least one counter-roll appointed to the roll shell; the supporting elements are constructed to follow the radial movements of the roll shell.

Abstract: A tool for setting blind hollow rivets which include a mandrel to be pulled from the accessible side of work to set the rivet on the blind side. The tool includes a body, a pulling device movable relative to the body, a pair of actuating levers pivoted to the body, and linkage means connected to each of the levers and connected at a single point to the pulling device.

Abstract: A tool is disclosed for attaching slotted weights to a fishing line. The tool has a base having a channel and an opening for insertion of the fishing line traversing the channel. An abutment across the channel is located adjacent to the opening. A transfer block is slidably mounted within the channel in the body. The transfer block urges a slotted weight against the abutment to close the slot and attach the weight to the line. Means are provided for moving the transfer block within the channel in the base. The tool also includes a reservoir for storage of a plurality of slotted weights and discharging individual weights into the channel. The reservoir is preferably tubular with a single flat surface for maintaining the weights in proper orientation with a flat orienting surface opposite the slot. The tool also includes a weight removal device attached to be moved with the transfer block, which device opens the slot in the weight and removes the weight from the line.

Abstract: This invention relates to tools for installing a connector body on the ends of cable conductors, wherein an indentor head is caused to impinge upon a connector positioned within a compression head to cause connector member to be indented to a desired depth; the device being adaptable to accommodate connector members of varying diameters and to adjust automatically the depth of indentation according to the diameter of the connector being compressed, through operation of differential thread mechanisms connected to a rotatable handle shaft.

Abstract: A method of and device for checking hygrometers and hygrostats, according to which the hygrometer or hygrostat is at its place of mounting checked by means of a reference device, such as a reference hygrometer directly indicating the air humidity. The reference hygrometer is first by means of a corresponding saturated solution calibrated to a standard climate corresponding to the operational climate (Betriebsklima) with regard to the relative humidity, and subsequently at the place of mounting of the device to be checked. The reference hygrometer is together with the hygrometer to be checked exposed to the same conditions. After the reference device has been adapted to the operational conditions (Betriebsbedingungen), the device to be checked is equalized with the reference device.

Abstract: A densimeter for measuring the density of a fluid with a disk-shaped body having an axis with a horizontal component and being rotatably mounted on a shaft along the axis. An open cavity is provided in the body so that the center of buoyancy of the body is displaced from the axis. The body has a generally homogeneous density and includes a region wherein the density is different from that of the disk. Because of the density anomaly the center of gravity of the body is displaced from both the center of buoyancy and from the axis. The outer perimeter of the body is circular so as to encounter minimal drag resistance while rotating in a fluid. When the densimeter is placed in a fluid, the disk will rotate on the shaft. The density of the fluid is determined from the angular position of the disk on the shaft upon reaching equilibrium.

Abstract: A body having a longitudinal opening through which a tubular member may extend for testing, such as two tubular members connected together by threaded connections or a coupling. Positioned along the longitudinal opening in the body are longitudinally spaced annular seal means. The body includes passage means for conducting fluid pressure against the outer circumferential surface of each of the annular seal means. Back-up means are mounted in association with each annular seal means for inward and outward radial movement with such seal means, each of the back-up means comprising anti-extrusion means to prevent significant extrusion of the seal means responsive to pressure imposed thereon.

Abstract: A method of accurately verifying the pressure contained in a sealed pressurized fuel rod by utilizing a pressure balance measurement technique wherein an end of the fuel rod extends through and is sealed in a wall of a small chamber. The chamber is pressurized to the nominal (desired) fuel rod pressure and the fuel rod is then pierced to interconnect the chamber and fuel rod. The deviation of chamber pressure is noted. The final combined pressure of the fuel rod and drill chamber is substantially equal to the nominal rod pressure; departure of the combined pressure from nominal is in direct proportion to departure of rod pressure from nominal. The maximum error in computing the rod pressure from the deviation of the combined pressure from nominal is estimated at plus or minus 3.0 psig. for rod pressures within the specified production limits. If the rod pressure is corrected for rod void volume using a digital printer data record, the accuracy improves to about plus or minus 2.0 psig.

Abstract: A device for testing inflated objects such as tennis balls, wherein a housing contains a testing chamber in which the inflated object is compressed in a testing operation to an extent correlated to its inflation pressure.Measuring means calibrated to indicate inflation pressure are carried by the housing and include a sensing member contacting the object being tested and displaced in said testing operation from a normal position to an extent dependent upon the inflation pressure of said object.

Abstract: A reference-load variable hardness tester for measuring Rockwell hardness and Rockwell superficial hardness, having an internal coil spring and an external coil spring disposed coaxially with a load shaft for each reference-load. When measuring Rockwell hardness, both the internal coil spring and the external coil spring work for the reference-load, and when measuring Rockwell superficial hardness, only the internal coil spring works for the reference-load.

Abstract: A device to monitor movement of a surface such as, for example, the roof of a mine tunnel or the like and to provide an indication if that movement exceeds some predetermined creep rate or velocity. The device includes a sensing member formed of a material whose precise creep characteristics as a function of stress and strain are known. The device includes a sensing member formed of a material whose precise creep characteristics as a function of stress and strain are known.

Abstract: A panty hose testing apparatus in which a manikin conforming substantially to the lower portion of a human torso is provided with waist, leg, and hip portions for receiving thereon panty hose garments and the like. The garment is retained upon the manikin, during testing, by opposed clamp assemblies which engage the garment and manikin adjacent the waist portion, and a crotch member is displaceable longitudinally of the leg portions and applies a force to the crotch area of the garment sufficient to initiate seam damage or a tear in the garment fabric. A gauge measures the force necessary to initiate damage to the garment.

Abstract: Direct readings of the timing angle and duration of the fuel injection of a diesel engine along with the engine speed are provided by an electronic test instrument that converts the duration of the timing advance and the duration of one engine revolution into electrical pulses of corresponding width. Both these pulse widths are then converted to corresponding electrical quantities and the quantity which corresponds to the timing angle is divided by the quantity which corresponds to one engine revolution to produce an indication of timing angle, or alternatively a constant reference quantity is divided by the quantity which corresponds to the engine revolution, thus providing an indication the engine speed.

Abstract: A torque meter which measures the torque of a rotating shaft includes at least two sensors. Portions of each sensor are fixed to the shaft. The sensors provide shaft pulse signals at the same frequency but having a phase difference corresponding to the torque experienced by the shaft. A clock provides clock pulses. A circuit connected to the sensors and to the clock provides first groups of pulses in accordance with the shaft pulse signals so that the number of pulses in each group of the first group of pulses corresponds to the torque experienced by the shaft at a constant speed. A first counting network counts the pulses from the circuit. Another circuit connected to the clock provides second groups of pulses and is responsive to the speed of shaft rotation so that a ratio of a group of pulses from the first group of pulses to a corresponding group of pulses from the second group of pulses averages out errors due to the shaft rotation and the sensors.

Abstract: This invention describes a pressure gauge which is one embodiment is adapted to be continuously mounted on the valve stem of the inflated device, thereby providing a continuous indication of the pressure therein. It includes an airtight enclosure formed by an expandable means such as a diaphragm, positioned within an outer housing. The gauge is adapted to contact the standard valve stem in the inflated device to release pressurized gas from the device into the airtight enclosure. In response thereto, the airtight enclosure expands. Cooperating with this expansion of the airtight enclosure is a piston like member which includes means for controlling the expansion of the airtight enclosure. The control means is calibrated so that the piston like member moves an axial distance in an amount proportional to the pressure of the gas in the tube. The piston has an indicator band painted thereon which positions itself opposite appropriate psi markings on the outside of the housing.

Abstract: The specification discloses a control module having circuitry for generating control and timing signals and for receiving digital data. A plurality of sensor modules are connected to the control module and each contains devices for sensing various physical characteristics, such as water level, rainfall or the like. In response to control signals generated by the control module, each of the sensor modules is operable to input digital data representative of the sensed physical characteristics to the control module. A recorder is connected to the control module and includes a removable recording cassette for recording the digital data transmitted from the sensor modules. The recorder also records the identification of the sensor module transmitting data, along with the calendar day and the time of day that the data was transmitted.

Abstract: An audible speed indicator for hang gliders or the like comprises an air driven impeller 16 whose initial point of rotation start-up may be adjusted to correspond to the stall speed by rotating cowling section 14 relative to housing 13 to thereby vary the opening area of side exhaust windows 15. The impeller drives a slotted disc 18 which passes light pulses from a source 19 to a photocell 20, whose output triggers an oscillator 23. The oscillator output energizes a speaker 24, whose audible pulse frequency is thus proportional to air speed. The audio volume may also be reduced or blanked within a predetermined air speed range by a frequency detector 27, whose upper and lower triggering frequencies are adjustable.

Abstract: The specification discloses a digital method for measuring the volumetric flow rate of a flowing fluid, utilizing the change in electrical conductivity produced in a fluid by the introduction of a predetermined quantity of electrolyte. A temperature sensitive conductivity probe has an oscillator with an output signal frequency directly proportional to the conductivity of the fluid flowing between the electrodes of the probe. The conductivity probe is disposed in the fluid downstream from the point at which the electrolyte is introduced to alter the electrical conductivity of the fluid. The circuitry measures the increase in conductivity caused by the electrolyte during the period of time it takes the electrolyte to pass the conductivity probe and subtracts the integral of normal conductivity to determine the integral of conductivity produced by the electrolyte.

Abstract: A flow rate detector of the type comprising a corona discharge circuit to cause partial ionization of a fluid at a section of a fluid passage and a probe positioned downstream for detecting the amount of ions carried by the fluid as an indication of the fluid flow velocity. To achieve direct detection of mass flow rate even when the fluid exhibits fluctuation in its density, the detector includes a control circuit which serves the function of maintaining the intensity of a discharge current flowing through the corona discharge circuit constant.

Abstract: A low pressure drop air flowmeter for an automotive engine is disclosed. The meter includes a main air flow passage, a relatively small venturi to receive a portion of the air flow, a pressure port for sensing stagnation pressure in the main passage, a pressure port for sensing static pressure in the throat of the venturi, and a set of swirl vanes disposed adjacent the outlet of the venturi and operative to impart a swirl to the remainder of the air in the main passage, thereby creating a reduced pressure at the venturi outlet for amplifying the pressure difference between the stagnation and static pressure without appreciably increasing the pressure drop across the flowmeter. A geometrically reconfigurable element is included in the main passage resulting in a swirl rate which increases with increasing air flow but at a decreasing rate. This characteristic results in an output pressure differential signal which varies substantially linearly with flow rate over a relatively large range of operation.

Abstract: A temperature sensor utilizing a semiconductor sensing element which absorbs monochromatic radiant energy as a function of temperature. The apparatus includes a monochromatic radiant energy source, radiant energy guide means, a semiconductor sensing element interposed in the radiant energy guide means and a detector for detecting the intensity of the monochromatic radiant energy transmitted by the semiconductor sensing element. Advantageously, optical fibers may be used as the radiant energy guide means for directing the monochromatic radiant energy to the semiconductor and returning the transmitted radiant energy to the detector. The semiconductor sensing element is fabricated from a suitable semiconductor material such as galium arsenide. Additionally, the semiconductor material can be fabricated as a mirror or reflecting prism so that it serves both as the sensing element and as part of the optical components for the radiant energy guide means.

Abstract: A device for measuring the density of a liquid or of a suspension of solids in a liquid comprises a holder of predetermined length, two pressure sensors mounted at one end of the holder and adapted to be submerged so that the two sensors are vertically at predetermined levels apart in the liquid, and a differential pressure transducer also mounted on the holder and coupled to the pressure sensors for providing an output voltage proportional to the pressure differential sensed by the pressure sensors.

Abstract: An electro-optic sensor including a cylindrical lens and a photosensitive diode array at the focal plane of the lens for measuring the angular displacement of a point light source from the neutral plane of the lens.In one application of the inventions the vibrational characteristics of an aircraft wing structure under load can be determined. A plurality of light emitters are judiciously scattered over the surface of the wing and the electro-optic sensor is attached to the fuselage. The emitters are sequentially energized and the readings of the sensor are synchronized with the emitters to provide the desired data. In other applications a pair of sensors will give two dimensional information and two pairs can be used to give three dimensional information.

Abstract: A resetting device coupled to a thermostat which has a resetting pin actuated by depressing the same, comprises a body arranged to be movable towards and away from the resetting pin; a propelling device for launching the body in the direction of the resetting pin for depressing the resetting pin by the body in an impact-like manner; and an operating arrangement movable into an actuating position for actuating the propelling device. The resetting pin is freely movable subsequent to the impact-like engagement by the body, irrespective of the momentarily-assumed position of the operating arrangement.

Abstract: The disclosure embraces a transmission gear for the wire guide of a coil winding machine and includes a rotary input shaft, a pair of electro-magnetic clutches, with each of the clutches having a toothed rack; each of the racks is connected to a rectilinearly movable carriage whereby when one or the other of said electro-magnetic clutches is actuated, the carriage will be moved by the associated toothed rack in a selected direction; limit switches are provided to reverse the direction of travel of the carriage by deactivating a given electro-magnetic clutch and activating the other of said clutches.

Abstract: The disclosure embraces a manure disposal installation including an electric motor having a fixed stator and a rotor which is attached to a hollow cylinder on the interior of which is fixedly secured a threaded nut; a threaded shaft passes through the center of the cylinder that is fixed to the rotor whereby rotation of the rotor will effect linear translation of the shaft; to one end of the shaft is attached a coupling means for coupling the shaft to a manure shovel rod to which is secured a manure shovel; the shaft is provided adjacent its ends with non-threaded, reduced diameter portions so that in the event that the direction of rotation of the rotor, upon the shovel reaching its limit of travel, is not automatically changed, damage to the associated mechanisms will be avoided since the reduced diameter portion of the shaft will come into juxtaposition with the nut fixed on the hollow cylinder whereby further movement of the shaft is prevented.

Abstract: A device for incremental feed of the tool or workpiece in a machine tool of the kind in which feed is effected with a device having at least one rotating shaft, characterized by a rotating element fixed to the rotating shaft, a releasable coupling element and elements for moving the coupling element, the coupling element being situated so as to interact with the rotating element at a distance from the shaft in such a way that when the coupling element is engaged with the rotating element, the latter is rotated and thus effects a rotary motion of the shaft.

Abstract: Conversion of a fuel pump computer price variator from a three place to a four place unit volume price range and comprising an auxiliary higher place take-off shaft parallel to and having a coaxial gear in engagement with the variator cone gear, an additional summation differential mounted at the top of the variator coaxially with the cone gear and substantially within a stepped dome-like projection of a modified cost variator cover for combining an auxiliary higher place price output to the conventional three place price output, an idler gear in operative engagement with and mounted on a lever for pivotal movement about the additional summation differential for selective engagement with one or more take-off shaft driven gears, and, auxiliary price posting shutters connected to the lever for displaying the higher place price setting.

Abstract: A gear box in which there is provided an input shaft, a coaxial relatively rotatable output shaft, a lay shaft carrying a gear meshing with one on the output shaft, meshing gears carried on the lay shaft and on the input shaft, synchronizers on the lay shaft and input shaft for selectively connecting the gears thereon, all forward gear speeds being synchronized, and the gears for each speed arranged sequentially from an input and to an output end of the gear box.

Abstract: Change-speed transmission providing multiple forward speeds and at least one reverse speed. An output shaft of the transmission carries a first speed pinion or gear that is rigid with a hollow shaft that carries, in turn, a gear or pinion of the reverse gear train disposed upstream of other forward speed gears or pinions. The reverse gear carries a dog that is separated from a dog carried by the closest forward speed gear by a dog and synchromesh unit. A layshaft mechanism is positioned parallel to the output shaft to increase the number of gear ratios provided by the transmission.

Abstract: A countershaft type power transmission comprises a select shaft operatively connected with a select motor and a shift shaft operatively connected with a shift motor. The select motor and shift motor actuate the select shaft and shift shaft in response to various vehicle operating conditions, including the position of a control lever so as to engage a desired gear within the transmission. Means is provided for temporarily connecting the operative connecton between the shift motor and the shift shaft when the control lever is moved toward and into the reverse position, so that the shift shaft can be manually rotated via a mechanical connection between the control lever and the shift shaft to engage reverse gear.

Abstract: A change-over device for connecting a selected one of two incoming Bowden cables with an outgoing Bowden cable to transmit operating movement has three parallel swing arms individually rotatable about a common axis. The incoming cables are connected with the outer arms and the outgoing cable is connected with the center arm. The center arm is provided with an axially extending coupling pin which can be made to engage, by axial movement of the center arm, a corresponding hole in the arm associated with the selected cable, thereby coupling these two arms for unison movement.

Abstract: A closure operator for a pivotally mounted closure, such as a vehicle sun roof or a pivoted window, having a series of pivotally interconnected links including an opener link pivoted to the closure and to an idler link which is pivotally mounted to a base. A driver link is pivotally connected between the opener link and a handle rotatable on the base whereby handle movement is imparted to the driver link for moving the opener link and the closure and with the movement of the opener link being partly guided by the idler link.

Abstract: A power drill attachment for exerting pressure through the drill bit onto the workpiece has a toggle linkage to provide a mechanical advantage of such sensitivity as to permit the operator to easily and quickly control the amount of pressure being exerted throughout the drilling operation. The attachment is especially adapted for use when drilling holes in door and window frames, through floor joists, studs, rafters and other building framework.

Abstract: A power branching transmission, having two parallel output shafts, each of which carries a rotationally rigidly connected ouptput drive pinion, the output drive pinions being axially offset with respect to one another and each meshing with a respective rotatable ring gear and with a respective central gear wheel disposed in the respective ring gear, a pair of driving pinions rotationally rigidly disposed on parallel drive shafts and each meshing with a respective one of the ring gears and a respective one of the central gear wheels, each of the ring gears and each of the central gear wheels having at least one coaxial race with at least one supporting roller disposed between the races and bracing the respective ring gear and associated central wheel with respect to one another. No housing is required, tooth forces of the ring gears and central gears being accommodated by the supporting rollers and not transmitted to the radial bearings of the input end output shafts.

Abstract: A drive shaft and a driven shaft are linked through a differential gearing which distributes the applied torque over two coaxial satellite shafts. One of the satellite shafts is directly connected with the driven shaft through a first steplessly variable split-sheave coupling of the Reeves type while the other satellite shaft, which is immobilizable by a brake, is connected through a second such coupling with an intermediate shaft which in turn can be coupled with the driven shaft via a clutch. With both the brake and the clutch released, the system idles; with the clutch operated, the torque transmitted from the drive shaft to the driven shaft varies inversely with the speed ratio of the two synchronized split-sheave couplings whereas actuation of the brake in lieu of the clutch doubles the output speed and halves the transmitted torque. If only unidirectional rotation is to be transmitted, the clutch can be replaced by a one-way coupling which lets the driven shaft rotate freely when the brake is engaged.

Abstract: The present application discloses structure which produces area contact in place of point or line contact between a cylindrical shaft and a cylindrical bore. When the area of contact is increased, the unit pressure is reduced which results in less wear and longer life. The combination of the present invention includes a shaft having an external surface and a member in the nature of a gear or the like which has a bore surrounding the shaft and which bore includes an internal surface. The present invention involves the situation wherein one of the shaft and member is fixed and the other of the shaft and member is rotatable. The improvement of the present invention involves the situation wherein the surface of the rotatable one of the two above mentioned members is provided with a first cooperating surface portion which has a constant radius and which extends through an angle 360.degree..