Abstract: An aeroplane propeller assembly comprising a pair of hub members made of nylon with glass fibers interspersed therein forming an undulant gripping surface for clamping the root ends of wooden propeller blades and embedding the raised areas of the hub surfaces into the wood to obtain a firm and shakeproof purchase thereon as the hub members are bolted to each other and to the blades. The hub members are in the form of discs and have root-end-confining pockets formed to clamp the end portions and hold them under compression tightly within the pockets, each pocket having sharp pins molded therein and strategically located not only to pierce into the wood but also to swell the wood and contour it against the enclosing surfaces of the pocket. The propeller blade root ends are adapted to be cut at different angles to obtain different pitch upon being fitted into the same pockets.

Abstract: The invention relates to a coupling for making a connection secured against relative rotational and axial displacement between a hub member and a shaft member. The shaft and hub members have engaging keys and grooves at the internal and external circumferences thereof. The hub member has a circumferential groove undercutting the keys thereof and an insert member having the same key and groove configuration as the shaft member is disposed therein. The insert member is circumferentially offset relative to the hub member so that the respective keys and grooves thereof are out of alignment. The keys of the insert and hub members are then in axially abutting engagement with the insert member serving as an anchor so that a screw connection between the shaft and the insert members allows the shaft and hub members to be drawn towards each other to form a firm and secure connection.

Abstract: A mixer assembly including a container having a rotatable impeller therein and a motor base having a casing and a drive shaft in the casing adapted to be coupled to and drive the impeller in the container. The drive shaft in the casing extending through an opening in the casing and having a disk fixed to the shaft for rotation therewith. The disk being positioned above the opening in the casing and extending radially outwardly over the opening whereby liquid contacting the upper surface of the disk will be spun off as the disk rotates.

Abstract: A jointing connector made from a sheet metal blank for connecting two to four wood members such as 2.times.4's. The connector includes a palm portion, and a finger portion with six distinct finger members. Each finger may be bent in the field by workmen to accommodate the particular jointing of the wood members. Preferably, the connector is bent in a U-shape at the factory. Three types of nail openings are provided including circular, slotted and directional slotted tab openings. The different types of openings with the configuration of the connector enable workmen to use the same connector in nearly a universal application to all types of jointing configurations. Further, the use of the special nail openings and the connector permit many of the nails to be used in double shear applications so that the connection value is doubled.

Abstract: An automobile door with an inner plate and an outer plate wherein the outer plate has a panel formed from a synthetic resin. The panel is attached to a rigid metallic plate, such as steel, through a plurality of fastening holes formed in the longitudinal direction of the synthetic panel. One of the fastening holes near the forward end of the panel has a diameter substantially that of the fastening means. The remaining fastening holes are formed so as to allow longitudinal expansion and contraction of the synthetic panel. A lip portion is formed near the lower edge of the synthetic panel to engage with the inner plate of the door.

Abstract: A fitting for furniture parts includes a dowel casing and a screw or the like. The screw has a head extending into the dowel casing where it is held tight by a locking member. To facilitate the insertion of the screw into the dowel casing conical guide surfaces are provided on the dowel casing.

Abstract: In order to obtain a high initial stress force of the screw, in particular cap screw, in a framework made of hollow sections used as bar elements, joined at separate junction members, having connecting parts for the bar elements, whereby threaded holes are provided at the exposed ends of the connecting parts and plates with central bores are provided at the end of the bar elements, on each of the plates a cap screw with its head positioned within the bar element being inserted and screwable into the threaded bore on the side of the connecting part, whereby finally the bar elements, the plates and the connecting parts reach a smooth exterior profiling, achieving a framework free of recesses and projections it is proposed that a tubular guiding piece (6) be supported by the plate (4) inside the bar element (2) forming a sliding duct for the cap screw (7) and running slightly curved with respect to the wall of the corresponding bar element (2) and abutting in an opening (8) for the passage of the screw provided

Abstract: The invention relates to tubular-type scaffoldings, to a method for assembling them and to the horizontal transoms incorporated therein. A scaffolding according to the invention comprises vertical elements bearing sockets on each of which may be fixed one end of a horizontal transom bearing a fork and a conical pin prisoner therein. Near its end, the pin comprises a protruding pivot. At rest, the pin occupies a substantially horizontal position and the upper edge of the socket abuts slightly to the rear of the pivot and causes the pin to pivot to vertical position. One application of the invention is the erection of scaffoldings for the construction of buildings, ships or reservoirs.

Abstract: The disclosure herein describes an element so constructed as to inter-connect with a similarly constructed element in the making of a mosaic display panel, the element defining a rectangular body, the outer wall of which is provided with a longitudinal projecting guide and a longitudinal channel transversely spaced from one another; the channel has a cross-section so dimensioned as to include therein the cross-section of the guide whereby the guide and channel of an adjacently disposed similarly constructed element may interfit in the channel and guide, respectively, of the first element; each channel includes, at one end thereof, an entry pocket to funnel initial engagement of the guide of two adjacent elements to be engaged to one another in a sliding motion.

Abstract: A substrate support module (10) includes a series of vertically arranged guide shelves (12, 14 and 16) having front, intermediate and rear circular bosses (34, 36 and 38) projecting from opposite ends thereof. The first and third bosses (34 and 38) are tangentially received in elongated horizontal slots (40 and 44) in side support plates (18) to position and lock the shelves (12, 14 and 16) against vertical movement. The intermediate bosses (36) are tangentially received in vertical elongated slots (42)in the side support plates (18) to position and lock the shelves (12, 14 and 16) against horizontal movement. During assembly, edges of the slots (40, 42 and 44) tend to flatten or shave off small peripheral portions (50) of the bosses when the bosses are slightly oversize, whereby the oversize bosses can readily be assembled into the slots.

Abstract: A connector for connecting two rotors (2, 4) together, said connector having a plate (1, 3) on the end of each rotor.It has clamping bolts (5) and a plurality of fixing components (6) for the plates (1, 3). Each fixing component (6) has a sleeve (17) cut in two. The sleeve is cylindrical on the outside and conical on the inside and is disposed in precision-reamed bores (12, 14) of the same dimensions in the two plates, the bores of one plate facing and being situated exactly adjacent to those of the other when the rotors (2, 4) are aligned. A shank (20) which has a conical portion (21) pushes back the parts of the sleeve (17) against the walls of the bores (12, 14) thus connecting the plates together without play.In the case of normal operation, the connector has high resistance to shearing due to the fact that there are no stresses in the components (6). In the case of a torque greater than the normal torque, the parts of the sleeve 17 are deformed but can be very easily extracted.

Abstract: The disclosure relates to an improved latch for releasably latching the hinged spare tire carrier to the tailgate or rear door of a vehicle, such latch being characterized by a mounting bracket attached to the carrier and movable therewith that carries a tapered guide pin projecting therefrom which cooperates with an annular cam surface bordering an opening sized to receive same provided in the latch plate fastened to the door or tailgate so as to move the interlocking elements of the latch into properly aligned relation for latched engagement. The guide pin also functions as a pivot for a release lever that carries one of the interlocking elements and which is in the form of a latch pin paralleling the guide pin offset to one side thereof.

Abstract: A self-aligning mounting arrangement for aligning a fastener to secure a first workpiece to a second workpiece. The arrangement includes a plurality of bores each of substantially identical cross-sectional area in one of the workpieces. These bores are arranged in a matrix grid pattern having a predetermined grid dimension. The cross-sectional area of each bore is a predetermined fractional part of the average cross-sectional area of the fastener used to secure the two workpieces. The predetermined grid dimension is a predetermined proportion of a cross-sectional dimension of the fastener.

Abstract: A moving vehicle power distribution apparatus includes power signal and ground signal rails provided along a roadway track including a track switch. As the track switch is moved to pass the vehicle to selected roadway tracks, the signal and power rails can become misaligned and damage current collectors carried by the vehicle that travel along these rails. Coupling members having interdigitated members extend between the rail sections to control the movement of the current collectors as the vehicle travels through the track switch.

Abstract: A wrist pin for securing a crank arm with a pittman arm to translate rotary motion into longitudinal motion and comprising a shank adapted for insertion transversely through a bore provided in the crank arm, a retaining plate secured to one end of the shank and engagable with one face of the crank arm for positively securing the shank in engagement with the crank arm, an enlarged head member at the opposite end of the shank for engaging the opposite face of the crank arm in order to limit the movement of the wrist pin in one direction, and a connecting member extending axially outwardly from the head member for engagement with the pittman arm.

Abstract: An anchor connector incorporating a flexible joint (16) for securing the tension legs (14) of a tensioned leg platform. A latch dog head (34) engages a first recess (26) on the fixed member (22) of the flexible joint and a template recess (30) to prevent disconnection when the dog heads (34) and latch carrier (40) are in a lower position. With the latch carrier (40) in an upper position the latch dog heads (34) fit within a second recess (44) in the fixed member with the dog heads claring shoulder (32) of template recess (30), whereby the connector may be released.

Abstract: The invention provides a connecting rod assembly (10) for use in linking a piston (11) to a crankshaft and particularly provides a means for precisely aligning and attaching the connecting rod cap (15) to the connecting rod (12). The connecting rod assembly (10) uses bolts (18) extending through the cap (15) and engaging female screw threads (22) in the rod (12) to retain the cap (15) in place. Truncated female screw threads (23) are provided in the cap (15) to engage and distort the threads on the bolt (18) as the bolt (18) is tightened to align the rod (12) and cap (15) and to lock the bolt (18) in place.

Abstract: A nozzle retention system is disclosed which serves to retain a jet nozzle in a drilling bit and also align the nozzle with respect to the bit cutters, said system utilizing a deformable pin and interacting channels in the nozzle and the bit nozzle bore.

Abstract: A vane type hydraulic pump has a pressure plate, thrust plate, cam ring, rotor and vanes, which when assembled, are denoted as the pump rotating group. The thrust plate, pressure plate and cam ring are maintained in axial and angular alignment by a pair of dowel pins which extend between the plates and through the cam ring with a close fit relationship. The plates and cam ring are restrained from rotation by a dowel pin which extends between a close fit in the pump housing and a loose fit in the pressure plate. The rotating group is disposed in a cylindrical cavity in the pump housing which cavity has a diametral dimension cooperating with the outer diameter of the pressure plate and thrust plate to provide a sliding pilot fit at assembly thereby sharing the axial alignment constraint of the pair of dowel pins.

Abstract: A locking device in a telescopic tripod leg element assembly for camera to fix an inner and an outer tubular leg elements in an extended position. A sleeve has at its one end an internal multiple thread and at the other end an inner peripheral face providing a guide face for the inner tubular leg element. The inner tubular leg element is provided at the inner end with an external multiple thread. The inner and outer tubular leg elements are locked in an extended position by engaging threadably the internal and external multiple threads with each other.

Abstract: A device for allowing the removal of a central or coupling shaft which is connected to a main shaft having its ends retained within bearing supports. At the joints between the coupling shaft and main shaft there is complementary coupling pieces which align the coupling shaft with the main shaft. A releasable collar maintains the shafts in a locking relationship and there are locating means on the shaft to positively position the collar around the joint.

Abstract: A pressure gauge having a rotatably secured Bourdon tube, and a dial plate arcuately displaceable for effecting zero calibration of the gauge includes a rotationally presettable key for registered placement within a key-slotted receptacle in which the gauge is to be utilized. Keying is provided by a simulated Y-shaped washer mounted in an annular groove on the gauge stem and arcuately secured post-calibration at a predetermined angular setting from a reference point on the gauge dial.

Abstract: A pivot pin assembly for a bucket loader wherein a pivot pin having an enlarged tapered head passes through bushings in the loader boom arm to a distal end whereat an externally tapered thrust collar is slideably mounted thereon. An adjustment plug is threaded in the thrust collar and regulates the spacing between the collar and the pin end thereby setting the side clearance for the bushings. A pair of split wedge collars respectively lock the tapered pin head and the thrust collar in the bushing bracket apertures, the split collars being wedgingly locked by end plates bolted to the respective ends of the pin. Lip seals are provided between the boom arm and the pin head and the thrust collar and the boom arm and the pin is provided with an internal lubricant reservoir communicating with the boom arm bushings which may be easily refilled as necessary.

Abstract: The invention provides a connecting rod bolt (10) for maintaining precise alignment of the connecting rod (11) with the connecting rod cap (14). The connecting rod bolt (10) has a section (31) knurled to a diameter larger than the bores (30) in the rod and cap with which it mates. Upon insertion of the bolt (10) into the bore (30) the bolt will be precisely matched to the bore.

Abstract: A leader pin for guiding and directing the halves of a mold as it opens and closes. The pin has a base, a shoulder at one end of the base, and a frustoconical tapered section which extends outwardly from a ledge on the base. A cylindrical guide pin projects outwardly from the narrow end of the tapered section. The tapered section and the guide pin fit into a complementary tapered and cylindrical opening in the sleeve of a bushing. The two tapered sections accurately guide, direct, and align the mold halves, without the assistance of separate cones and conical orifices.

Abstract: This invention relates to an improved tractor front end implement mount adaptable for rapid attachment and detachment by a single person. This invention is characterized by a working implement having a pair of lift frame arm assemblies coupled in working relationship with intermediate frame members, the intermediate frame members being attachable to support structures attached to the tractor for mounting an implement thereto. Pockets are formed on the outer extremities of the support structures which extend outwardly from opposite sides of the tractor and are adaptable for catching and retaining the rear end portion of the respective intermediate frame members until the intermediate frame members can be pivotally attached thereto by pins. The invention is further characterized by the use of multiple diameter configuration pins which are tapered at the ends and adapted to fit into snug fitting relationship with openings in the pockets and in the intermediate frame members.

Abstract: A fastener assembly is disclosed which comprises a clip for mounting a constituent member to a corresponding receiving member. A socket portion is integrally formed on the constituent member, which socket portion has a cylindrical opening with a pair of engaging projections extending from opposing inner peripheral surface portions of the opening toward each other. The clip has a shaft, a support portion formed at a longitudinal central portion of the shaft and adapted to fit in the opening of the socket portion, a pair of spearhead-shaped snap portions formed at opposite ends of the shaft, one of which snap portions is adapted to fit in the opening of the socket portion and engage the projections, and small flexible bosses which retain said one of the snap portions in the opening when this snap portion is disengaged from the projections. A mounting hole is bored on the receiving member so as to receive the other one of the snap portions.

Abstract: A retrievable connector assembly is disclosed for securing two parts together. The assembly includes a guide frame to support the first of two parts and a pair of rotatable shafts with threaded ends to carry male coupling members with pins which extend from each coupling member. The assembly also includes a mounting hub attached to the second part. The mounting hub includes female coupling members having slots to receive the pins of the male coupling members. Rotation of the shafts moves the pins into lateral legs of the slots locking the two parts together. Further rotation of the shafts causes the male coupling members to move upward along the shafts forcing the first and second parts together. The two parts can be separated for retrieval by rotating the shafts in the reverse direction thereby separating the male and female coupling members.

Abstract: This relates to a mandrel clamp assembly for supporting a mandrel of a shirring machine and for introducing liquid and air into the mandrel. Most particularly, this relates to the mounting of a sealing sleeve and the mounting of a mandrel positioning pin.

Abstract: In the manufacture of vane type pumps, particularly for booster steering systems, precision assembly between the flow directing plate, sometimes referred to as a cheek plate, control plate, etc., and the cam ring is provided economically by die casting either or both components and effecting a pair of die cast tapering flat sided locating bores. One bore is elongated to allow for inaccuracies while the other is box-like in cross section. Locator pins secured in reamed bores are force fitted into the cast bores wherein the box-like bore which is dimensioned to fit a pin determines the rotational center of the components with respect to each other for exact relative positioning. The position is fixed by a pin in the elongated bore which pin can be accommodated in the elongation to compensate for spacing errors of the bores.

Abstract: A sectioned Venetian blind slat and mechanism for joining the sections thereof to permit a broken slat to be replaced without the necessity of taking the entire blind to a repair shop. Fabrication of slats through the use of the joint mechanisms of the invention results in simplification of manufacturing techniques and the realization of economies through being able to use shorter pieces of wood such as were formerly treated as scrap in the manufacture of full length slats. Contrasting shades of wood sections may be employed to develop a contrasting pattern in a blind.

Abstract: A device for locking a cam shaft of a fuel injection pump for an internal combustion engine including a coupling block connected to a projecting portion of the cam shaft rotatably supported by a pump body. The cam shaft locking device includes a locking pin threadably engaged in a threaded opening formed in one of a fixed member on the pump body and the coupling block, and a locking plate formed with an opening for fitting the locking pin therein secured to the other of the fixed member and the coupling block, whereby the cam shaft can be locked in an optimum rotational position.

Abstract: When mounting a magnetron to the flange of a wave guide, a stud bolt studded in a mounting plate secured to the magnetron is passed through a bore in the flange and tightened with a nut on the side of the flange. The stud bolt has a tip portion without threads having a diameter which is equal to or slightly smaller than the diameter of bottom of thread of the stud bolt.

Abstract: A positive nail-angling device for metal connectors for prevention of splitting due to beam "hanging" caused by side nailing and wood shrinkage and prevention of splitting of laminated members such as plywood, glued laminated timbers (glulam) and prefabricated wood joists (microlams). The device includes a slot-like opening formed in the face of a metal connector and a tab-like member formed from the displaced face material from the slot-like opening and bent along a bend line which constitutes one end of the slot-like opening. The slot-like opening and tab-like member in the connector confine the nail so that it can only penetrate the wood member at a pre-selected angle. In many applications, the tab-like member is bent at an angle of 45.degree. to the face of the metal connector.

Abstract: Disclosed is a structure for fixing a knob to a part to be operated through the knob, e.g. a switch of an electric circuit and the like. The fixing relies upon snap-fitting or engagement projections (or recesses) formed on the inner wall of the cap-shaped knob with recesses (or projections) formed on the surface of the part. At least one of the knob and the part is provided with at least one elastic tab unitary therewith, which tab exerts, when the knob is fitted to the part, a resilient force to bias the inner wall of the knob away from the part, so as to eliminate the shakiness of the knob on the part, affording a stable and safe fixing without necessitating unextraordinarily high dimensional precision of the knob and the part.

Abstract: In a coupling of members subject to rotational uncoupling forces, a lock key that unites the members and holds them from relative rotational movement with a fastener for the lock key to not only secure the lock key to one or the other members, but by its size insure proper locking with the lock key of the members.

Abstract: A table section aligning and fastening device comprises a unitary plastic male member including a projecting nose portion and a complementary unitary plastic female member defining an alignment channel for receiving the nose portion of the male member. The members mount to the underside of respective table sections to be joined at their respective abutting edges. The nose portion is both laterally and vertically tapered so as to cooperate with the alignment channel defining portion of the female member in guiding the table sections into lateral and vertical alignment as they are pushed together. The female member includes an integral resilient finger which resiliently engages in a retaining notch formed in the nose portion to hold the members and the table sections together.

Abstract: A device for securing suspended platelike elements to a carrying structure, e.g., for securing suspended ceilings to an overlying floor, is proposed and comprises a carrier which is secured to the carrying structure and provided with a movable nut member and also comprises a cap screw or the like which is screwed into the nut member. The tapped bore in the nut member is automatically aligned with the crew.

Abstract: A simulated knock off wheel spinner nut which can be attached to a wheel without having to remove the wheel from the vehicle. The simulated nut is sized to be partially inserted into the hub opening of the wheel and then locked in position by a plurality of rigid tabs located about the inner circumference of the spinner nut and maintained in place by set screws with their heads accessible from the outer circumference of the nut. By tightening these screws, each tab is drawn tightly against the inside wall of the hub securing the nut to the wheel.

Abstract: A lock assembly for restraining a drive shaft of a fuel injection pump in a definite rotary position that corresponds to the initial point of fuel injection for an internal combustion engine. The lock assembly which can be removed after installation of the pump in a motor vehicle includes an elastic deformable element that has a portion thereof that is rigidly connected adjacent to one end wall of the pump housing and further includes another portion that is secured to an element driven by the drive shaft.

Abstract: Apparatus is disclosed for attachment of a safety fence of the type used for safe deflection of vehicle from leaving a roadway, wherein the apparatus is connected between a post anchored in earth and a safety fence beam. The apparatus includes corrugations for supporting the beam in fixed and unbending relationship and to prevent sagging of the fence structure upon the impact of a vehicle.

Abstract: A two-stage locking or latching mechanism for releasably connecting an endoscope and a urological instrument. In the first latching stage a body portion of the endoscope is fully received within a socket of the urological instrument and is restrained by a cooperating lug and socket against all movement except limited outward axial movement into the second latching stage. In the second latching stage the parts are secured against further axial separation unless they are first rotated with respect to each other to cam a spring out of latching engagement with the body portion of the endoscope.

Abstract: Apparatus for detachably coupling two objects together including a pair of coupling blocks relatively movable between remote, inoperative positions, and adjacent, coupling positions. A locking tongue projects outwardly from one of the blocks and is received in a recess provided in the other of the blocks. A locking pin, mounted on the other of the blocks, is provided for movement thereon between a position in which the blocks may be moved toward and away from each other, and another position in which a portion of the locking pin bears against the tongue to urge the blocks toward each other.

Abstract: A detachable coupling consisting of two mating halves which when detachably interconnected form a ring which is free to rotate but is restrained axially with respect to elements to be connected.

Abstract: The specification discloses a fire hydrant and valve assembly therefor including a flexible, resilient compressible, fluid-impervious sealing flange or lip formed on and extending outwardly of the main valve sealing member for supplemental sealing of both the water passageway through the main valve seat ring and between the valve seat ring and inner surface of the hydrant conduit.Also disclosed is a method for assembling a valve assembly in a fire hydrant to prevent damage to the valve assembly by using the sealing flange or lip on the sealing member to locate and guide the valve assembly through the valve seat area of the conduit as well as to lubricate that area during insertion of the valve to ease assembly and facilitate later disassembly.

Abstract: A fastener having a generally cylindrical body with a laterally enlarged head spaced frame said body by a web which is transverse to a threaded bore in the cylindrical body and with the body having rib-like extensions disposed perpendicular to the web.

Abstract: A retention and release mechanism utilizes a collet with deflectable fingers to allow assembly of the mechanism onto an object which is to be retained. Movement of the object toward the mechanism causes a force to be exerted on the bottom end of a plunger and movement of the plunger, which is coupled to a lockpin by a plurality of spherical balls and a split ring, from a released to a retained position. In the retained position, the balls secure the lockpin in a fixed position relative to the collet while mating tapered surfaces at the ends of the collet fingers and the lockpin cooperate to retain the object to which an expendable bushing has been attached, the bushing being part of the mechanism. To release the object, a force must be exerted on the top end of the plunger to move it to an axial position wherein the balls are released from their fixed position relative to the collet and the mating tapered surfaces move away from each other.

Abstract: A cable joint comprising a clamping sleeve adapted to be compressed over a looped cable end section. An opening is provided in the clamping sleeve for the inspection of the cable end within the sleeve. An insert of a material that is harder than the clamping sleeve is positioned in the opening prior to the compression of the sleeve and is retained therein during the compression of the sleeve to control the flow of the sleeve material around the opening.

Abstract: A twin wheel coupling device includes a plurality of spaced knee lever mechanisms carried on supports attached to an additional wheel to be locked together with the permanent wheel of a tractor. Spaced lugs attached to the permanent wheel rim are provided with projections engageable with hooks of the knee lever mechanisms. Laterally extending pins carried by the supports of the knee lever mechanisms engage in holes provided in the lugs.

Abstract: An actuator and actuator-orientator assembly orients aerosol cans in the proper position to spray a stripe of marking material. An actuator having a generally cylindrical outer surface is adapted to be mounted on the valve stem of an aerosol can and includes a spraying orifice and a pair of radially outwardly extending locating lugs. The actuator-orientator is provided with a circular central opening into which the actuator is inserted and a pair of recesses which extend radially outwardly from the central opening for receiving the locating lugs of the actuator when the actuator is properly oriented. The periphery of the central opening is defined by curved guide surfaces which extend upwardly from the recesses. A guide surface extends from each side of each recess and meets a guide surface from the other recess at the midpoint of the arc which extends between the recesses.