Abstract: A storm window having a peripheral frame including an integral, angulated leg portion for extension, abutment and securement to the jamb of an interior window. The storm window of the present invention includes a window frame extrusion having a plurality of integrally formed slide tracts for receiving a window unit therein, and an inwardly facing flange portion extending therearound at a selected angle relative thereto. The angulated flange includes an outer planar flange portion in generally parallel spaced relationship with said slide track portions for direct securement to a window jamb of an existing window. This particular construction facilitates the flush securement and sealing of the storm window of the present invention to the existing window in a manner facilitating installation and reducing thermal conductivity between the adjacent window structures as well as air infiltration therebetween.

Abstract: A drive system for a movable closure member movable along rail sets carried on opposed sides of the frame of a structure includes a rail set on each side of at least one pair of opposed sides of the frame. Each rail set includes first and second laterally offset toothed sections. Each first section includes a horizontal segment and an inclined segment whereas each second segment includes a vertical segment and an inclined segment which has at least a portion thereof in juxtaposed side-by-side relation with the inclined segment of the first section. An electric motor has a drive shaft that extends transversely of the rail sets and carries a first gear wheel coaxially therewith at each end. Each first gear wheel carries a second and smaller gear wheel eccentrically thereon. The first and second gear wheels have a common point of tangency.

Abstract: A vehicle power window actuator for pivoting a glass view panel about an axis by means of back-and-forth linear movement of a wire cable. The wire cable has a jack screw portion swaged to one end engaging a gear which is rotated by an electric motor to produce linear movement of the cable. The other end of the wire cable is swage-attached to a rigid curved rod terminating in a ball-shaped end portion. The curved rod is housed in an arcuate hollow support assembly which is attached to the vehicle body adjacent the movable edge portion of the window panel so as to direct the end portion of the curved rod against the panel. A connector assembly between the end portion of the curved rod and the window accommodates linear movement of the ball-shaped portion in a direction parallel with the plane of the glass as the window pivots outward. In addition, the end portion moves with and rotates with respect to the glass.

Abstract: A readily removable closure panel for an opening in a roof or wall of a vehicle and including a quick release hinge means for permitting partial opening of the panel and for rapid disengagement and removal of the panel from the roof. An adjustable hinge construction for a panel wherein the hinge construction includes a resilient yieldable hinge member which provides a hinge edge for releasable pivotal engagement with a cooperable frame portion of a frame member defining an opening in the roof. The hinge edge engagement provides a hinge axis beneath or interiorly of the panel margin and the hinge edge is adjustably spaced therefrom for causing the panel edge margin to press against a resilient gasket on the frame member in both closed and partially opened position of the panel.

Abstract: The bearing device consists of a hydraulic cylinder and piston unit mounted between two pivotally interconnected solids and a hydraulic circuit. The acceleration performances in the two directions imparted to the suspended mass supporting the grinding wheel are obtained by using a combination of suitable valve means controlling the hydraulic circuit and more particularly through the system for regulating the fluid pressure in one of the chambers of the cylinder which operates as a differential. The result thus obtained is a homogeneous removal of chips and an optimal exploitation of energying flaw-removing machines.

Abstract: Improved apparatus for shaping electrodes wherein an abrasive die member is driven into contact with an electrode workpiece member while the die and workpiece members are oscillated with respect to one another in the horizontal plane and wherein the relative vertical motion of the die and workpiece members is controlled as a function of the relative vertical position thereof.

Abstract: A machine for treating spherical surfaces of parts with a magnetoabrasive powder held in a magnetic field created in the gap between two magnets comprises a horizontal circular channel acting as one of the magnets and a rotor arranged above the circular channel and carrying spindles around the circumference, the lower end of each spindle being provided with another magnet adapted for holding the workpiece. Each spindle has a mechanism which imparts to it a rotary and, simultaneously, recessional motion, the precession center being located mostly on the line of centers of the generatrix of the circular channel.

Abstract: Disclosed is a numerically controlled method of broad application but particularly useful for grinding cutting edges and clearance surfaces on cutting tools such as end mills and other similar tools. A programmable numerical servo-motor type control is described. All of the grinding operations are completed at a single station in a series of consecutive grinding operations performed by the same grinding wheel and during which the tool remains in the same work holder. The various cutting edges and clearance surfaces to be ground are both mathematically located and mathematically defined such that the grinding operations may be conducted under numerical control according to optimum wheel speed, feed, position and coolant conditions and with a wide range of independently and simultaneously movable axes. A grinding wheel wear compensation program and a coolant dispensing program are also numerically controlled in coordination with the grinding operations.

Abstract: A panel unit for an air supported structure including an outer wall, a pair of first inner insulating panels attached to said outer wall adjacent one another, and a second insulating panel attached to a pair of said first insulating panels spanning and covering the junction of two said first insulating panels to provide insulation at the junction. Air relief vents are provided on both said first and second insulating panels to permit trapped air to be vented when the structure is collapsed.

Abstract: A fascia-protecting drip-diverting device has an upper portion which is thin enough to be telescoped upwardly into the narrow space between a fascia and a gutter which is disposed immediately adjacent that fascia, has a lower portion which is thicker, stiffer and stronger than said upper portion to enable it to withstand the forces which must be applied to that fascia-protecting drip-diverting device to cause that upper portion to telescope upwardly between that fascia and that gutter, has a stop which limits the extent to which that upper portion can be telescoped between that fascia and that gutter, and has flanges at the side edges thereof which displace those side edges outwardly away from the fascia to keep laterally-moving drips from reaching that fascia, and has the bottom thereof displaced below the level of the bottom of the fascia to cause drips to move downwardly below the level of, and then fall away from, the bottom of the fascia without engaging that fascia.

Abstract: An off-shore underwater observatory comprising a lower, submerged observation gallery fitted with at least one observation window and having a ceiling with an opening through which the observation gallery is accessible, and a body of water on top of the gallery such that the combined weight of the structure and the water exceeds the buoyancy. An annular skirt may depend from the ceiling in extension of said opening to a level which is below the head level of a person standing in the gallery, the upper edge(s) of the window(s) not exceeding the lower edge of said skirt.

Abstract: In a modular wall and floor structure, the edges of wall panels have upwardly directed hooks projecting outwardly from their opposite vertical edges. Short lengths of multisided hollow extrusion have a downwardly opening longitudinal slot in each side which slots receive the panel hooks of adjacent panels for connecting such panels to form an exhibit array. Adjacent ends of overhead beams are connected to each other and to the upper ends of the panels by downwardly directed beam hooks received in upper longitudinal slots in the lengths of extrusion. The lower portions of the connected or unconnected panels can be clamped between modular floor components.

Abstract: The partition wall comprises a lower horizontal rail provided with a tongue, rectangular panels each having on two adjacent sides tongues and on the opposite sides grooves, the panels being fitted together and mounted on the lower rail. The panels are disposed in superimposed rows in laterally staggered relation. A horizontal upper rail is fitted on the upper row of panels. Clamping devices are carried by the upper rail and bear against a ceiling and thereby press the panels against each other.

Abstract: The bottom flutes of a fluted deck or diaphragm of a building are fixedly attached to a horizontal load bearing member supported by vertical load resisting members. A load translation member, fixedly secured to the top flutes of the diaphragm and to the horizontal load bearing member, precludes relative movement between the top flutes en masse and the bottom flutes en masse. By precluding relative movement of the top and bottom flutes, the shear loads imposed upon the diaphragm by earthquakes and/or high winds are translated through the load translation member and the load bearing member to the vertical load resisting members.

Abstract: A composite panel-like building module having a rigid foam core encapsulated in a shell and reinforced cementitious material having a facing member on one main face thereof, which may be a dry wall, and a process for making the composite module.

Abstract: A transverse interlock floor for the bodies of trucks, vans, trailers and other vehicles is disclosed in which extruded transverse floor panels are employed extending from side to side in the body with edge interlocks between adjoining panels, and with stiffening braces on the undersides of the panels, the panels being secured to and supported from below on transverse I-beams of the body and with intermediate stiffening braces if desired, the transverse I-beams being supported on the longitudinal I-beams or frame members of the body which latter are secured to the longitudinal frame channels of the truck chassis.

Abstract: An elongate panel of siding to be mounted generally horizontally on the wall of a building. This panel, which may be of thin sheet metal, has two opposing faces, constituting inside and outside faces, and upper and lower longitudinal edges. Hooks are bent down from the upper edge on the outside face of the panel and a plurality of holes are spaced below but relatively close to the upper edge of the panel for receiving fasteners to secure the panel to the wall. At the lower edge of the panel is a continuous flange bent to extend inwardly from the lower edge of the panel and having a lip bent up at its inner edge for engaging the hooks of the panel therebelow on the wall.

Abstract: A modular building panel is provided having interlocking bead and groove conformations formed in mating interfitting tongue and socket structures and provided with sealing strips for forming a fluid seal between adjacent assembled panels. The modular building panel is fabricated with longitudinally extending marginal edge portions of mating tongue and socket configurations for enabling interfitting assembly of adjacently disposed panels. The tongue and socket edge portions of each panel are provided with respective interlocking bead and groove conformations for cooperative interlocking engagement for securing adjacently disposed panels in assembled relationship. A sealing strip formed from an elastomeric material is attached to at least one of the socket or tongue marginal edge portions in longitudinally extending relationship thereto and at a location for contacting interengagement with surfaces of the adjacently assembled panel in forming a fluid impervious seal therewith.

Abstract: Cementitious building blocks having upstanding male projections on one planar surface so as to be disposed in a particular geometric array which locates the projections in the corners of passages extending through the blocks. The projections are supported on corner corbels which carry corner spanning shelves which extend inwardly into the passages so as to locate the projections in alignment with the open corners at the opposite ends of the passages. The open corners and aligned male projections allow self-aligning stacked interlocking mortarless assembly of a plurality of such blocks for the construction of buildings, walls and the like.

Abstract: Corrugated steel plate is formed from a flat plate stock and has a length of at least about 12 feet, a corrugation pitch of at least about 12 inches, and a corrugation depth of at least four inches. The plate has thicknesses of up to 1/2 inch and more. Also disclosed are structures such as tunnel-type, heavy load-supporting structures defined by upright and horizontal structure portions which extend over no more than about 180.degree. while being capable of supporting up to 40 feet of ground fill and payload thereon. The corrugated plate can be used singly or as double, spaced-apart plate assemblies which are hollow or filled with concrete or a like material, including steel reinforcing bars for the concrete. The corrugated plate can also be formed into vertical, sectional retaining walls, bin type retaining walls, bridge abutment walls, flat support surfaces such as bridge decking, open air structures, guard rails, sheet piling, etc.

Abstract: An apparatus for vacuum-sealing a vial includes a table for receiving the vial temporarily closed with a rubber stopper, a vertically movable enclosing device having a chamber at the lower end thereof for air-tightly enclosing a mouth of the vial in the chamber to hold the vial securely on the table when the enclosing device is lowered, a rubber stopper suction head vertically movable within the chamber of the enclosing device independently thereof, a first evacuating means adapted to communicate with the chamber so as to evacuate the vial, a second evacuating device adapted to communicate with the rubber stopper suction head, whereby, after the enclosing device is lowered to enclose the vial in the chamber, the rubber stopper suction head is lowered to suck the rubber stopper and is raised to remove the rubber stopper from the mouth of the vial so as to evacuate the vial, and the rubber stopper suction head is then again lowered to vacuum-seal the vial with the rubber stopper.

Abstract: A versatile food preparing machine which includes various attachments for selectively processing many different kinds of foods. The machine is characterized by incorporating a bottomless hopper and a food support pad for restingly supporting the food at various levels as it protrudes downwardly from the hopper. An interchangeable reciprocatable food processable element, e.g., a knife or shredder/grater element, etc., workingly engages the food by cyclically moving between the hopper and the adjustable food support pad, e.g., whereby slices of various thicknesses may be made from certain kinds of foods. Ejector structure cyclically ejects particles of the processed food, e.g., slices of okra and the like, downwardly away from the food processable element. Particular structure is also included for collecting the ejected slices of food to facilitate subsequent storage thereof in a food freezer.

Abstract: A wrapping machine comprising an intermittently rotating wrapping wheel having individual pockets for receiving in succession an article to be wrapped and a wrapper, the wrapping wheel being operative during its rotation to fold the wrappers partially around the articles and to bring the pockets, each containing a partially wrapped article, in succession to a transfer station, and a continuously moving conveyor carrying a series of pushers, said pushers being arranged to move through the pockets of the wrapping wheel in succession as they reach and while they are stationary at the transfer station, to withdraw the partially wrapped articles from the pockets and traverse them in succession through a final wrapping station at which the wrap is completed.

Abstract: A clutch mechanism for a lawn mower which automatically prevents transmission of the rotary force of the drive shaft of a lawn mower when a lawn mower operator is not holding on to a control structure and which invention further includes the provision of a braking mechanism which stops rotation of a lawn mower blade when such control structure is not being held and when the clutch is disengaged.

Abstract: A replaceable thin polyethylene bag attachable to a rotary power lawn mower for catching grass clippings, the mower including a duct leading upward from the underside chamber wherein the cutter blade rotates, the bag being fitted on the end of the duct and standing upon a supporting platform mounted on a rear end of the mower, and the bag being perforated with air vent holes so to allow escape of air while the grass clippings collect inside the bag, and in one design the mower platform automatically is rearwardly downwardly pivoted to unload a bag when filled while a pivotable nozzle automatically positions a next bag for loading.

Abstract: A machine for harvesting black currants or other soft fruit comprises a frame, ground engaging wheels for supporting the frame, traction means for driving the frame over the ground along a row of soft fruit bushes, a picking zone defined by said frame, guides for guiding branches of each bush into the picking zone as the machine traverses the bush, rotary shakers for engaging the branches in the picking zone and shaking fruit therefrom and fruit collecting means directly below the picking zone for collecting fruit shaken from the branches. The machine is provided with a longitudinally extending open top channel into which fruit can fall, a fan for providing a flow of air along the channel and ducting connecting the fan to the open top channel so as to provide a current of air along the channel to convey the fruit along the channel.

Abstract: A bearing arrangement is provided for a rotor shaft of an open-end spinning assembly which includes a ball engageable with the end of the rotor shaft opposite the spinning rotor to axially support the same. The ball is wettable by a lubricant supplied by a wick in contact therewith and is supported in a step bearing housing which includes a retainer member having a cup-shaped portion directly engaging the ball at the side thereof opposite the rotor shaft. In order to transmit operational vibrations from the spinning assembly to the ball so as to improve lubrication of the ball by moving the same, the entire step bearing housing means is supported at a component of the spinning assemby in such a manner that the component vibrations are transmitted to the bearing housing, and thence to the retaining member and ball.

Abstract: Self-twisted yarn is packaged on a take-up device to prevent loss or modification of the twist previously imparted to the yarn by maintaining the yarn in a substantially rotation-free state as it is guided onto the take-up device. This is accomplished by wrapping the yarn around an elongated guide rod as it is fed to the take-up device under tension or by controlling the tensioned free length of the yarn as it is guided onto the take-up device to preclude rotation of the nodes or points of twist reversal in the yarn.

Abstract: Programmer for electric household appliances, comprising an assembly of programming cams driven in rotation by a reversing cam driven itself by a motor, a timing wheel driven in rotation by the reversing cam via a set of levers, a first cam of the cam assembly triggering off the rotating of the timing wheel and the simultaneous stopping of the cam assembly, a cam surface on the timing wheel triggering off again the rotating of the cam assembly and the stopping of the timing wheel after a timing the period of time of which is determined by a second cam of the cam assembly.

Abstract: A compact electronic timepiece structure for a timepiece having an analog type display wherein the electromechanical transducer for the display and the circuit board for the electronics of the timepiece are combined into a single joint structure. The joint structure comprises an arcuous coil member wound on an insulative bobbin, a circuit board for supporting the electronic components and electrical interconnects between the components, a plurality of holes in the circuit board, and a plurality of thermoplastic fastening means extending through the holes of the circuit board and fastening the bobbin to the circuit board.

Abstract: A case for a wristwatch, which comprises a shell fabricated from an outer thin metal plate, an annular metallic reinforcing member positioned within said shell, and an inner shell composed of an injection molded synthetic resin, said inner shell lying in intimate contact with an inner surface of said shell and having an inwardly facing annular recess into which said annular reinforcing member is fitted.

Abstract: A chain for protecting electric and/or hydraulic supply cables to a mining machine repeatedly traversing to and fro. The links each comprising two elements which when connected define a passageway for the supply cables and which can be at least partially disconnected to permit access to the passageway, both the elements being pivotally attached to the elements of neighboring links.

Abstract: A power producing constant speed rotary turbine in which an elongate shaft is rotatably supported in longitudinally spaced, axially aligned first and second housings that have a housing assembly disposed thereinbetween. The first housing rotatably supports a power take-off that is driven by a series of reduction gears operatively connected to the shaft. The second housing envelops an output power turbine rotor defined by a series of thin, circular, coaxially aligned, laterally spaced discs of high temperature metals or high temperature ceramic such as hot pressed silicon nitride that are operatively connected to the shaft.A compressor rotor is mounted in an intermediate position on the shaft and rotates within the housing assembly, which assembly has an air inlet therein. As the compressor rotor rotates in the housing assembly, air is discharged to first and second groups of diffuser tubes that extend to first and second volute casings.

Abstract: A hydraulic machine including a turbine and a pump oriented for the same direction of rotation and axially spaced apart on a common shaft, and having a casing extending between the external turbine strut ring and the external pump strut ring in which a pump inverter is housed, the casing having an internal separating wall dividing it into two chambers, into one of which the pump inverter discharges.

Abstract: Turbine engine power extraction and acceleration capabilities are enhanced by the sensing of the amount of air that is bled off from a compressor, and biasing the acceleration schedule in relation thereto. In this way the engine shaft power extraction and/or rotor acceleration capability can be maximized by enriching the acceleration fuel schedule when compressor bleed air is extracted. The selected degree of enrichment may be applied so as to consume the entire stall margin gain, whereby the engine is made to follow the same acceleration trajectory on a compressor map notwithstanding the degree of compressor bleed, or the degree of enrichment may be applied so as to obtain the desired performance level while retaining a portion of the gained stall margin.

Abstract: A torque converter is proposed where the height of the vanes on at least the turbine wheel is reduced somewhat compared with conventional designs at their middle portions, so that the generation of eddies and turbulence in the flow of transmission fluid past those portions which are the most sharply curved portions of the vanes is avoided.

Abstract: An engine which can convert thermal energy into mechanical energy by making use of the expansion in the volume of a liquid, such as water, when it freezes, and a corresponding decrease in the volume when the frozen material returns to its liquid state. A cylinder containing the liquid with a piston positioned above the liquid is placed in a large container through which a repetitive succession of cold fluids and hot fluids are passed. The cold fluid entering the container freezes the liquid in the cylinder. The volume of the liquid increases raising the piston. The cold fluid is then removed from the container and hot fluid applied to defrost the frozen material in the cylinder returning it to its liquid state. The volume then decreases causing a lowering of the piston. The reciprocating movement of the piston is applied to an output which can then be amplified to produce greater displacement.

Abstract: A turbine, such as a steam turbine, which may be employed to drive an electric generator, is operated by movement through it of gas vaporized in a heat pipe. The turbine is enclosed in the heat pipe structure and the pipe is sealed so that the vaporizable fluid therein is not lost during use. The fluid is maintained at a desired pressure at which it is readily vaporized by heating means, such as heated air brought into contact with the heat pipe, and is also readily condensed by cooling means, such as ambient air. In modifications of the more basic invention an auxiliary heat pipe or a plurality of such pipes is employed to extract energy from a source of heat after it has heated the turbine-containing heat pipe and such auxiliary heat pipe(s) may also be used to pre-heat a heat transfer fluid. Turbines may be present in the auxiliary heat pipes too and they may be connected to the same or different generators.

Abstract: An engine system includes a compression ignition engine, a turbo-supercharger for supplying air under pressure to the engine, an intercooler disposed between the outlet of the compressor of the turbo-charger and the engine, an air heater the output of which is connected to the engine and a valve operable to cause the air from the compressor to be delivered through the intercooler or through the air heater to the engine. In addition the valve can be opened a small amount when it is required to initiate combustion in the air heater so that only a small flow of air takes place through the heater. When the combustion has started the valve is moved to the position in which all the air from the compressor of the turbo-charger flows to the engine through the air heater.

Abstract: A split cycle internal combustion engine of the kind described in U.S. Pat. No. 3,408,811, in which the only ignition means is heat supplied from an external source such as an incandescent tube or a heater for the admitted air and which advance and retardance of the ignition is effected by automatically controlling the timing of the admission of fuel and the heated air to the combustion chamber in response to the load upon the engine. This is achieved by lengthening or shortening a pivoted telescopic lever attached to the cam followers for the fuel pump and the transfer valve admitting the air. By driving the low pressure stage of the compressor from a different throw of the crankshaft from the higher pressure stages, a compact and well-balanced engine may be designed.

Abstract: A cargo compartment of a refrigerated vehicle is cooled by a cryogen, such as carbon dioxide. A storage tank carried by the vehicle is filled with CO.sub.2 slush. Liquid CO.sub.2 is separated from solid CO.sub.2 and supplied to a heat-exchanger where it is vaporized and the vapor is warmed by heat transfer from the cargo compartment atmosphere. A minimum vapor pressure of at least about 75 psia is maintained in the heat-exchanger, and a portion of the vapor is returned to the vehicle tank, melting solid CO.sub.2 therein. The major portion of the vapor stream is expanded through one or more gas motors, passed through one or more additional heat-exchangers to cool the cargo compartment and then vented. The pressure of the returning vapor is preferably increased by a compressor attached to a gas motor and injected into the vehicle tank.

Abstract: A circuit containing a plurality of fixed detector resistors and a detector potentiometer, each being representative of the contribution to energy consumption of a different operator controllable parameter of an air conditioner and being series connected with one another across a d.c. galvanometer and meter sensitivity resistor. Shorting switches are connected across each of the detector resistors, the conditions of which switches are responsive to the conditions of corresponding switchable parameters such as fan speed, vent door position, etc. A slide arm of the potentiometer is responsive to thermostat operating temperature setting. The resistance values of each detector resistor and the potentiometer are selected to contribute approximately the same percentage resistance to the total resistance of the detectors as a change in the status of its corresponding control parameter contributes to air conditioner operating cost efficiency.

Abstract: An economizer system for air conditioning uses a space thermostat to determine a demand for cooling and an outside air controller to determine whether cooling shall be mechanical or natural. A mixed air controller senses the temperature of the mixture of outside air and recirculated air and adjusts the relative proportions as desired by means of a controlled bidirectional damper, moving at a rate far less than the response time of the mixed air controller. This slow bidirectional damper movement in response to the mixed air control sensors causes the dampers to modulate in an inexpensive and reliable manner.

Abstract: A portable perfusion system for organ preservation comprising a cart on which a refrigeration unit, a pump unit and a cassette are mounted with the pump and cassette being removable for separate transport. The cassette includes an organ receptacle, a heat exchanger, a membrane oxygenator, a bubble trap and an ice deposit area. The heat exchanger is connected to the refrigeration unit and the perfusate is pumped by a non-pulsatile pump through the heat exchanger to the bubble trap and, in turn, to the organ. An oxygen supply on the cart supplies oxygen to the membrane oxygenator which functions to oxygenate the perfusate.

Abstract: Non-uniformity of air fluidization freezing of food particles on a wire mesh conveyor belt caused by variations in food particle layer thickness or in layer permeability over the working area of the belt is minimized by the presence of uniformly spaced airflow masking rods placed in the transversely extending core spaces of the belt helices. Of selected material, such as polyethylene, the rods serve also to strengthen and stiffen the belt and to minimize uneven wear in the mesh.

Abstract: An ornament adapted to be fixed by permanent magnets has an ornament piece to which is fixed a gem or the like, and an attracting piece confronting the ornament piece. The ornament piece and/or the attracting piece is provided with a rare earth-cobalt magnet embedded therein, so that these pieces may be held by each other by means of the magnetic attracting force which acts across a non-magnetic body such as an earlobe. The level of the magnetic attracting force is so selected as to fall, when the pieces confront each other across a distance approximating the thickness of an ear lobe, within a range of between 30 grams and 100 grams per square centimeter of attaching area and, at the same time, to be larger than 30 grams per gram of weight of the ornament, so that the user may put the ornament which may be an earring, without pain nor the fear of unintentional dropping.

Abstract: A coupling for usage in environments subject to vibriations which includes a universal joint disposed in series with a rod and coupled with a resilient bendable member that is rigidly attached to both sides of the universal joint.

Abstract: A drill string shock absorber has a dual spring system for absorbing vibrations and shock loads during rotary well bore drilling operations. A first spring acts in compression when sufficient weight is set down on the drill bit through the shock absorber to overcome the fluid pressure forces tending to extend the shock absorber, and a second spring acts in compression when the weight applied to the bit through the shock absorber does not overcome the fluid pressure forces. A splined connection transmits torque to the shock absorber during drilling operations, and seals are provided between the telescopic shock absorber components for confining therein a body of lubricant, the pressure of which is equalized with the pressure of drilling fluid flowing through the shock absorber.

Abstract: A shear pin assembly in a shaft coupling is disclosed in which an elongated, circular cylindrical shear pin having a central groove is held at its ends in split, tapered bushings received in tapered outer bushings press-fitted into bores in flanges of the two coupling halves. A loading bolt is threaded in each end of the shear pin and a head of the bolt bears against a loading plate which in turn is seated against the split inner bushing to force the inner bushing into place to rigidly grip the ends of the shear pin.

Abstract: The device comprises a circular container for collecting the dripping down lubricant. Said container is located between the tiers of baffle plates and is connected by a recirculating pipe line with the roller lubricating pipe line. The device incorporates a tubular air heater which heats the surfaces of the baffle plates that might get in contact with the fabric being processed, and a heat exchanger in the lubricant supply line.