Abstract: A bandsaw machine has a bandsaw blade frictionally held between opposed first and second guide members. A removably adjustable pressing plate member is connected to the second guide member. The second guide member is movable towards and away from the first guide member in response to adjustable movement of the pressing plate member. A lever-actuated cam acts on the pressing plate member to movably adjust the same.

Abstract: In an electronic keyboard musical instrument, the operation of a key causes a corresponding frequency information signal to be read out of a frequency information memory. The frequency information signal represents a counting number and is repeatedly accumulated in an accumulator at a first clock rate. The accumulator generates carry signals at a frequency defining a tone frequency. A wave shape memory stores sample values of a wave shape, and a counter addresses this memory to read out the wave shape. The counter is driven at a second clock rate to successively address the sample values one after another, but is reset by the carry signals to restore it to its initial state. Thus the memory generates only those sample values of the wave shape which fall within the carry signal period from the beginning. The tone colors will vary from one tone frequency to another.

Abstract: A plucking mechanism for a string instrument, for instance a harpsichord consists of a mandrel directly coupled to the key, the mandrel being provided with a protruding edge which plucks the string.

Abstract: A ligature for holding a reed onto the mouthpiece of a musical instrument, comprising two arcuate shaped solid members adapted to be located partially around the mouthpiece and strings connected to the arcuate members to be located around the remaining portion of the mouthpiece for holding the reed onto the mouthpiece. Locking means is provided for connecting together the other ends of the arcuate shaped members.

Abstract: A clarinet barrel having fixed internal dimensions is provided with a plurality of throat members having a fixed outer dimension for insertion within the clarinet barrel. The inner dimensions of the individual throats are varied in order to provide varying tonal qualities to the clarinet. The throat member can be fabricated from materials other than wood to provide further tonal qualities.

Abstract: A screw adapted to be driven by an ordinary straight-bladed screwdriver, the head of the screw having a cylindrical socket formed in the top surface of the head thereof coaxially with the screw shank adapted to receive the driver blade therein, the wall of the socket preventing lateral slippage of the driver blade from the socket and permitting turning of the blade, portions of the wall being offset resiliently inwardly to inhibit turning of the blade, and so configurated that a partial turn of the blade causes it to be gripped between portions of the offset wall to hold the screw releasably on the blade, so that the screw may be inserted in positions of difficult access, to resist rotation of the blade, more strongly after a further partial turn of the blade, whereby the screw may be driven by the blade with a suitable torque, and to yield completely on the application of a still greater torque, whereby to limit the maximum torque applicable to the screw by the screw driver.

Abstract: The shank of a self tapping screw has a thread forming section, a threaded section, and a reduced diameter section interconnecting the forming and threaded sections. The thread forming section forms internal threads into a known thread form that has a wedge ramp at its root. The threaded section comprises threads of standard form having the same pitch as the thread forming section. The reduced diameter section is slightly longer than an integer multiple of the pitch so that the threaded section is backset slightly from the forming section.

Abstract: Disclosed herein is a snubbing device for use with traditional braided cordage. Traditional braided cordage exhibits a certain elasticity when tensioned by having the longitudinal axis of the braided cordage pulled in such a manner that the braid and resulting diameter constricts itself. In a double braided environment, an outer braid would constrict upon an inner braid, which would in turn constrict upon itself. A resilient elastic insert is provided within the inner core thereof, thereby causing the inner braid to constrict thereon.

Abstract: Liquid fluid pressure applied to a piston causes advancement thereof at a rapid rate until an external resisting load applied to the piston rod exceeds a predetermined value producing a corresponding increase in the pressure within the opposing pressure chambers to which the piston is exposed. Bi-directional flow, conducted between the opposing chambers during rapid piston movement, is automatically blocked by a differential circuit pressure operated piston valve to cause a rapid increase in the differential pressures acting on the piston, and an increase in the value of the external piston rod load with a corresponding decrease in its rate of movement in the same direction. A modified embodiment permits the piston rod to act under pressure and with a force in both the extending and retracting phases of the stroke with the same rapid extending rate until the external resisting force is encountered.

Abstract: A control apparatus for a hydraulic power consumer, particularly in agricultural machines, has a pressure medium reservoir which is connected with a member for supplying pressure medium from the reservoir to the user to thereby move the latter from a stationary position. This member is subject to pressure oscillations which result from a pressure difference which is created in this chamber on displacing of the consumer from the stationary or neutral position. In order to eliminate undesirable oscillations of the user on displacement of the latter from the stationary position the arrangement is provided with a member for damping these pressure oscillations.

Abstract: A control motor of the type used to control carburetor choke valves wherein the motor has an output member acted on by a pair of springs, one of which is effective to urge the choke valve towards its closed position when the engine is not operating and the other of which resiliently resists opening movement of the choke valve.

Abstract: The present piston pump conveys concrete mixes through, for example, two pump cylinders located in a frame structure so that the cylinder axes extend substantially in parallel to each other. The pump cylinders cooperate with scavenging chambers also installed in said frame structure. To facilitate the assembly and disassembly of said pump cylinders in said frame structure without disassembling the entire frame structure, releasable, form locking connecting elements are operatively arranged between the frame structure and the scavenging chambers whereby the latter may be axially shifted in the frame structure for removing the pump cylinders from their sockets in the frame structure, for example, for maintenance work. Upon insertion of the cylinders into the frame structure, the connecting elements are tightened whereby the pump cylinders are held in position in the frame structure by the connecting means through said scavenging chambers.

Abstract: Structural improvements in the mechanisms for supporting and driving the blade of an orbital saw. Improvements in the controls for the drive mechanisms for the winder and for the saw blade particularly as to increasing or decreasing the production rate of specified stick lengths.

Abstract: A cylinder device has a main body having therein a cylinder having an inner closed end and an outer open end, a piston slidably fitted in the cylinder and having a small diameter portion on the inner end thereof, a liquid pressure chamber defined between the piston and the inner end of the cylinder, a cup seal fitted around the small diameter portion of the piston with a lip portion thereof directed toward the liquid pressure chamber and sealingly engaged with the cylinder, an annular retainer disposed in the liquid pressure chamber, a spring acting between the piston and the annular retainer to urge the retainer against the inner end of the cylinder, the configuration of the annular retainer being such that when the piston is at the innermost position in the cylinder the annular retainer engages the lip portion of the cup seal to prevent the lip portion from radially inward deflection.

Abstract: In a building having a heating, ventilation and air conditioning system, exterior walls and at least one story having a true ceiling, a suspended ceiling, and lighting fixtures occupying openings in the suspended ceiling, the true and suspended ceilings being vertically spaced thereby to form a plenum, the improvement is provided comprising means partitioning the plenum into an interior plenum forming a return air plenum for the system and at least one perimeter plenum, the exterior walls forming the periphery of the at least one perimeter plenum and the at least one perimeter plenum surrounding the return air plenum. In another embodiment, the improvement comprises thermally insulating material forming an interior area of the suspended ceiling and relatively thermally transmissive material forming a perimeter area of the suspended ceiling, the exterior walls forming the periphery of said perimeter area and said perimeter area surrounding the interior area.

Abstract: An air outlet for the admission of conditioned air to rooms and other inhabited spaces includes an air box with an air outlet slot. The air outlet slot is longitudinally subdivided to form individual ducts each of which contains an independently adjustable air guide vane. Internally, the outlet slot may be variably obturated by three superimposed control slides, each of which has periodically occurring covering surfaces, the width of which corresponds to the width of an air outlet duct. The covering surfaces on each control slide are disposed at a distance corresponding to four duct widths. The air box contains thermostatically controlled actuators which are coupled to the control slides in such a way as to permit their relative longitudinal, i.e.

Abstract: This invention provides a novel skewer, for cooking shish kabobs or the like, made from plastic, and comprising two interfitted, but otherwise unconnected members, the interfitting connection joining the handle and the body of the skewer. The body of the skewer and the handle are therefore capable of some relative independent movement. The skewer may be used in connection with a novel method and recipe for preparing foods, in particular, baked shish kabobs, or the like, comprising the steps of coating the food with a dry cassava flour based batter, baking in the oven until warm, applying melted butter or cooking oil, and baking until done.

Abstract: Onions are lifted and transported individually and are transferred in succession onto an orientation conveyor where the onions are made to roll along a belt conveyor driven in the opposite direction to align the stem axes transverse to the line of movement of the conveyor. Following orientation, the onions are gripped individually and carried into engagement with a pair of laterally spaced trimming blades which cleanly snip off the protrusions at the ends of each onion along the stem axis to prepare the onions for further processing. During their movement toward the trimming blades by the gripping and carrying means, the onions engage blade connected camming means which automatically adjusts the lateral spacing of the trimming blades responsive to variations in onion size. Following the trimming operation, the onions are released automatically into a collector means.

Abstract: A rotary baler utilizing endless, driven belts to assist in formation of the bale has a tailgate that is raised for discharge of the bale after the forming cycle has been completed. A span of the belting is carried by the tailgate as the latter is opened, and a stationary tightener is positioned in the path of travel of the span during its movement with the tailgate so that the belting is progressively deflected in a transverse direction by the tightener as the tailgate continues to open, thereby tensioning the belting to forcefully eject the bale from the baler.

Abstract: A fastening device for enabling a tool to be slid as a unit onto a mounting table of a machine such as a press or the like to a predetermined position thereon and for enabling a displacable slide of the machine to engage in its moving direction with the upper part of the tool. For fastening the tool the device comprises slots in the table and guide bars on the lower side of the tool, the guide bars being introducable into and lockable in the slots by means of locking means on the table, and engagement means on the upper side of the tool the engagement means being introducable in the moving direction of the slide into corresponding recesses in the slide and lockable therein by means of locking means on the slide.

Abstract: In the use of pigment coated foil, e.g. so-called "gold leaf" being a common example, in the imprinting of pens, there is unavoidable slippage between the pen, supported on one or more idler rollers, and a rotationally driven printing slug, which detracts from the clarity of the imprinting indicia. This is obviated herein by using a stationary heated printing slug and converting a pen-supporting roller from an idler into a driving roller to, in turn, cause corresponding rotation in the pen. The pen is thus caused to rotate or "roll" across or along the printing slug, and such movement in turn causes the gold leaf to transfer onto the pen with a high degree of clarity.

Abstract: The invention comes within the field of equipment control. A method of shifting a moving unit from a first position to a second position by means of a stepping motor driven by a finite sequence of pulses, said moving unit being liable to oscillate about its equilibrium point, characterized in that as a function of the period and of the damping factor of the oscillation, the time intervals which separate said pulses are chosen so that the last pulse is applied to the motor at an instant when the oscillation resulting from the set of preceding pulses brings the moving unit substantially to the required final position and reduces its speed substantially to zero. It applies in particular to disc-type printers.

Abstract: In a print hammer mechanism in which an elongated, resilient hammer element mounted at a fixed end thereof has an opposite free end thereof selectively released from a retract position for impact of a dot imprinting element carried by the free end of the element, an improved magnetic circuit is provided for use in release and retraction of the hammer element. The improved magnetic circuit includes a pair of elongated pole pieces of like configuration having back ends thereof mounted on opposite sides of a rare earth magnet and tips at the opposite front ends thereof disposed adjacent the free end of the hammer element to form a pair of gaps therewith.

Abstract: A small-sized printer having print characters circumferentially disposed around a plurality of print rings rotating by a motor on a common shaft, includes a detector comprised of an integrated circuit board rotating on the same shaft. The rotating circuit board incorporates conductive foil contacts which are sensed during rotation by fixed brushes, thereby providing a series of pulses indicative of the rotational position of the shaft and of the print characters which are in position for printing. An auxiliary signal, generated by additional contacts on the rotating circuit board, indicate positions between the print characters on the print rings. Logic circuitry combines the actual position pulses with the auxiliary signals to output converted position pulses which are free of noise and irregularities in waveform normally associated with brush contact switches. These converted pulses provide accurate timing as is required for the print cycle. A motor stop signal is also provided.

Abstract: A spin-velocity actuated ball valve in a hollow-nose, hollow base projectile is positioned to selectively close or open a projectile. In the closed position normal propellant pressure or projectile carried propellant causes the projectile to achieve operational velocity. In the open position a conduit through the projectile reduces frontal area and tail drag caused by turbulence.

Abstract: A mobile track laying apparatus comprises an elevator on a vehicle movement along a right-of-way for lowering a succession of ties, a roller and gliding conveyor receiving the lowered ties and laying the ties on the ballast as the vehicle moves along the right-of-way in an operating direction, and a guide wheel power-driven to rotate about a horizontal axis extending transversely to the right-of-way, the guide wheel having a plurality of radially extending abutment and entrainment elements arranged to interdigitate between the successively lowered ties in an end region of the conveyors adjacent the ballast.

Abstract: A tamping unit comprises a vertically adjustably mounted carrier, a plurality of tamping tools arranged in a transverse plane for immersion in a track crib on each side of the rail, a rigid integral support including a central arm mounted on the carrier and two transverse arms extending perpendicularly to the track rail from the central arm on a respective side of the rail, the support being mounted on the carrier for pivoting about an axis extending transversely of the rail and the tamping tools being mounted on the transverse support arms on the respective sides of the rail to straddle the rail, drives for pivoting the support about the axis for vibrating the support, and a pivot mounting one of the tamping tools mounted on the transverse support arm extending from the rail towards the center of the track, the pivot extending parallel to the track rail for pivoting the tamping tool independently in a direction transverse to the track rail.

Abstract: Articulating devices may be used to combine railroad cars into a semi-permanent unit. Each device includes a male and female connecting member having ends attached respectively to adjacent ends of the railroad car bodies forming the unit. A pin disposed in aligned apertures formed in the outer end of each member forms a joint therebetween. To allow for vertical and horizontal movements between the members during operation of the unit, the pin aperture in the male member is larger than the pin and has a rear surface portion providing a substantial contact area with the pin. To maintain the pin aperture and pin in a controlled slack relationship, the male member is urged forward by a follower which is carried within the female member and engages an end surface of the male member. The position of the follower in turn is regulated by a wedge element which engages a pair of resilient elements carried by the follower.

Abstract: A radial axle railway truck of the rigid frame type has an improved primary suspension for resiliently supporting the truck frame from the axles while permitting arcuate movements of the ends of the axles required to allow the axles to assume radial positions on curved track and an improved disc brake system arranged to minimize interference with wheel-induced steering movements of the axles. The primary suspension comprises journal bearing structures with fore and aft wings, a yoke supported on the wings by flat elastomeric pads yieldable horizontally to accommodate steering movements of the axles and chevron-shaped elastomeric springs carried on the yokes fore and aft of the respective journal boxes and acting in parallel with metal coil springs carried by the yokes.

Abstract: A portable turntable apparatus for use in microwave ovens which is used as a supporting base for a container of food which is cooked within the oven and adapted to gradually rotate the same, the apparatus including a motor including metallic materials which motor is mounted in and enclosed by a metal housing and an outer enclosure comprising a cover and base of non-metallic material to prohibit electrical arcing between the motor and the oven walls. The housing is provided with smooth outer surfaces and a minimal sized aperture opening to allow a driving connection between the motor and the enclosure cover.

Abstract: A collapsible shipping rack with removable shelves being sized and configured for having one rack on top of another similar rack when the rack is in either the upright and collapsed position respectively. The rack includes a base, a plurality of substantially identical, normally upright legs connected to the base and each leg including a bottom section with positioning means, a middle section having at least one hinge means, and a top section having positioning means for compatible mating engagement with the bottom section positioning means. Additionally, a plurality of substantially parallel guide means are provided which span the legs for supporting the shelves.

Abstract: An individual safekeeping box comprising a protective enclosure with an access opening, a protective door with a lock therein, and cooperating mounting means of the door and the enclosure to removably mount the door on the enclosure to close the opening. The enclosure is preferably made in two parts, a top cover and a bottom plate. Means are provided for detachably connecting the top cover and bottom plate together and for locking the connected parts together.

Abstract: A tuyere for use in a blast furnace and provided with or constituted by a number of heat pipes extending generally longitudinally of the tuyere, the heat pipes being connectible to heat transfer apparatus located wholly outside the furnace.

Abstract: An improved lawn combine includes a frame having a plurality of rotatable wheels, including a pair of spaced-apart rear wheels, supporting and coupled to the frame, drive-actuated feed devices mounted on the frame for feeding materials in prescribed dosages to the lawn surface and drive means mounted on the frame for propelling at least one of the wheels of the frame and for actuating the aerator and the feed devices. The combine further includes a pair of manually-operable brake assemblies, each of which is disposed for cooperation with one of the rear wheels. Each of the brake assemblies is movable between a non-engaged and engaged position relative to the associated rear wheel, in the latter position of which it at least frictionally retards rotation of the associated rear wheel.

Abstract: A soil cultivation implement comprising a frame adapted to be coupled to a drive means, and said frame supporting, one behind the other in the direction of travel, first cutting means for cutting the ground substantially vertically, second cutting means for dividing the ground substantially horizontally and lifting it in a rearward direction, and a substantially horizontal rotor. The rotor is provided with power means from said drive means and is adapted to be driven rotationally and provided with prongs for penetrating the surface of the ground. The prongs are disposed helically on a rotor shaft in a least three rows staggered uniformly in relation to one another in the peripheral direction. The prongs are further substantially rectilinear and rigidly fastened substantially tangentially on the rotor shaft. Furthermore the prongs enclose in relation to the radii associated with their fastening points an angle of less than 90.degree.

Abstract: A device for control of the frame movements of embroidery or sewing automatic machines, by which the movements of the frame in the x and y direction are carried out by servomotors. The path information for displacement of the frame in the x and y direction are emitted by a microprocessor control, the latter comprising a central processing unit and a working random access memory, from which memory the path information is recalled on time in dependency on the program of a programmable read only memory and via the central processing unit with the intermediate connection of an input-output port being retransmitted to digital analog converters. The converters are connected with direct current motors of the frame via power units, the latter operating as amplifiers.

Abstract: To grip the tail end of a workpiece such as a stack of fabric layers to be stitched in a sewing machine, a pneumatically actuatable clamp on a carriage reciprocably guided along a rail has an air inlet in the form of a first nipple with a lateral entrance aperture confronting a discharge opening of a stationary air-supply line when the clamp is in a retracted loading position remote from the sewing machine. Air admitted in that position to a pressure cylinder via a branch of the supply line forces the inlet duct of the clamp against a sealing ring surrounding the discharge opening to conduct the main air flow via a check valve and a control valve to an operating jack for closing the clamp, the jack including a single-acting spring-loaded piston.

Abstract: In a sewing machine having a signal generator for producing a desired stitch pattern signal and a stitch forming mechanism actuated by said signal for forming said desired pattern, a device for receiving said signal and controlling said mechanism comprising an electromagnetic driver having a rotor shaft and a stator, at least one pair of coils mounted on said stator for receiving said desired stitch pattern signal and generating corresponding magnetic fields, a plurality of magnets attached to the periphery of said rotor in alternating polarity for interacting with said generated magnetic fields to angularly position said rotor in accordance with said stitch pattern signal, and means coupling said rotor shaft to said stitch forming mechanism to form said selected stitch pattern.

Abstract: A device for supporting and guiding a folded workpiece to the stitching needle of a sewing machine by advancing the same between a pair of cylindrical members mounted on the machine for rotation in opposite directions. Each of the cylindrical members is provided with circumferential grooves on their peripheral surfaces with the grooves of each being in general alignment with those of the other. The configuration of the grooves in combination with the spacing between the cylindrical members causes the folded workpiece being advanced therebetween, to become deformed to the extent where portions thereof enter the grooves to effectively support its weight while accurately guiding it along the level of its intended path of travel.

Abstract: A large-scale protective device in accordance with the invention comprises an assembly of two types of unit, rigid cylindrical floating towers (3 to 6) and elastic connecting units (7, 8, 9) consisting of elastomer tubes. The generatrices of these elastic connecting units are in contact with vertical stiffeners (10) of the floating towers. These vertical stiffeners also serve to maintain cylindrical deflector rings (11) of the floating towers one above another in a stacked configuration.

Abstract: A marine fender comprising a hollow cylindrical body formed of a resilient rubber block and an annular groove circumferentially extending along at least one end of the cylindrical inner wall of the hollow cylindrical body.

Abstract: A marine propulsion device which includes a drive shaft housing having a fluid passage therein and an opening communicating with the fluid passage, and a shift control rod housed in said drive shaft housing, the shift control rod including a first portion, a second portion, and a shift rod connector for fixedly joining the first and second portions together in coaxial relation, the shift rod connector being housed in the fluid passage and being accessible through the opening.

Abstract: A light guiding plate integral with a dial board proper of a transparent material is formed with a light reflecting surface which is such constructed that the light entering the light guiding plate from a top of the same is reflected by the light reflecting surface to be directed toward a portion, where the light guiding plate and the dial board proper are integrally connected, for focalization of the light in the vicinity of an opening of the dial board proper through which a spindle of a movement passes.

Abstract: Latent fingerprints having a latency of several weeks are applied to paper substrates using compositions comprising trimeric aliphatic acids of at least 30 carbon atoms which are substantive to paper fibers are substantially non-volatile, and are non-hardening, non-toxic and non-hygroscopic. The latent fingerprints are developed as desired by dusting in the conventional manner with toner particles, suitably, comprising magnetic particles in oleophilic matrix.

Abstract: Coupling valve for joining stationary and movable evacuatable chambers having confronting chamber walls displaced parallel with respect to each other. A first frame is fastened to one chamber wall and is joined by a resilient member to a second movable frame which can be brought into engagement with the other chamber wall. The movable frame is provided with at least one actuator by which it can be tightened against the confronting chamber wall.

Abstract: A cell for coating enamel onto wire, including radiation curable polymers (RCP), which accomodates a plurality of wires simultaneously. The wires are first subjected to vacuum degassing, and then pass through a single seal plate into a pressurized enamel chamber which assures a concentric coating of enamel onto the wire as it exits through a die plate having a separate cavity for each wire. Floating seals are provided at the entrance of the wire into the cell. The coated wire is then radiation cured conventionally.

Abstract: In a crucible or reactor for making multi-layered semiconductor devices by means of liquid-phase epitaxy, different supersaturated solutions are brought into contact with semiconductor substrates for short times. Transport of the solutions occurs by alternating acceleration. Either gravity alternates with centrifugal force, or a positive rotational acceleration alternates with a negative one. Chambers within the reactor are interconnected by channels so that the alternating forces acting upon the solutions cause these to flow in a preferred direction without mixing with each other.

Abstract: A heat and pressure roll fusing apparatus for fixing toner images to copy substrates, the toner comprising a thermoplastic resin. The apparatus includes a heated, either internally or externally, fuser roll cooperating with a backup or pressure roll to form a nip through which the copy substrates pass with the images contacting the heated roll. The heated fuser roll is characterized by an outer layer or surface fabricated from a silicone rubber material to which a low viscosity polymeric release fluid is applied, the silicone rubber being susceptible to swelling in the presence of the release fluid. A release fluid metering system is provided which includes a tapered roll that is adapted to apply release fluid to the entire outer fuser roll surface or to only a portion thereof depending upon the size substrate being utilized.

Abstract: An apparatus for applying a coating composition to an article and drying the solvent from the so applied coating prior to introduction of the coated article into the ambient atmosphere, comprising a housing or chamber in a generally "J" shape in which the small upwardly turned portion of the "J" defines an inner compartment isolated from the ambient atmosphere by the "J" configuration when the chamber is filled with a volatile solvent vapor and the inner compartment vapors are at an elevated temperature with respect to the remainder of the vapors in the chamber. The apparatus is provided with condensing means at the ambient atmosphere entrance and exit, a source of solvent vapors which may be integral with the chamber, and a means to introduce heat to the vapors and articles when they are in the inner compartment.

Abstract: An improved elongated coating rod holder for a coating doctor apparatus wherein the rod holder has formed therein an elongated cavity for receiving the coating rod with the cavity comprising at least two sealing surfaces therein. The coating rod holder also has formed therein a cooling water chamber formed as a plurality of smaller chambers having an interconnecting passageway between adjacent chambers. The cooling water chamber is formed directly below the elongated cavity which is connected to at least one cooling water inlet and at least one cooling water outlet formed in the rod holder.