Abstract: A basic connector body (13) which electrically connects and mechanically secures a ground wire (1) to a grounding member (14), e.g. pipe or electrical conduit, which body is made of a one piece brass alloy casting. The generally cylindrical, basic connector body has a smaller diameter, wire section and a larger diameter, pipe section, the size of the latter allowing the body to be slipped over the pipe end. In contrast, the smaller, wire section prevents the pipe from passing through the connector body due to the presence of a ridge (7). When the connector body is slipped over the end of the grounding pipe until the end of the pipe bears against the ridge, a first set screw (8) is screwed down until it drives itself down against the outer, exterior surface of the pipe, electrically connecting and mechanically securing the connector body to the pipe.

Abstract: The invention relates to a side strut (6) for the lower steering arm of a three-point hitch of a tractor. Locking catches (24, 25) are provided to cancel the floating position which the two telescopic members (14, 15) of the side strut 6 may assume relative to each other. The catches (24, 25) lock the members via locking contours (29, 30) of a locking recess 28, which surround and secure to a locking journal (31). The two locking catches (24, 25) are arranged at the sides of the telescopic members (14, 15). The locking catches have their pivot axis of the articulated journal (27) the points of contact between the locking contours (29, 30) and the locking journals (31), in a locked position, positioned on a connecting line. The line extends parallel to the sliding axis (16) and through the pivot axis of the ball eye (13). In this way, it is ensured that the locking catches (24, 25) and also the side strut (6), together, are not subject to any bending moments resulting from any tensile or compressive forces.

Abstract: A paint brush with replaceable head comprises a handle (1) and a bristle portion (2) detachably secured to the handle by a removable pin (6). The bristle portion consists of bristles (5) fixedly mounted onto the lower end of a retaining member (4) by adhesives (8).

Abstract: A modular system of coordinated, interlocking building elements for display fixtures, which include a variety of extruded metal parts, assembled by means of various connectors that attach to the extrusions by means of set screws or snap-ins and provide a framework for holding glass panels, shelves, brackets, light fixtures and the like.

Abstract: A probe and socket assembly (10) for serving as a mechanical interface. The assembly comprising a socket (11) having a housing (14) adapted for connection to a first supporting structure and a probe (12) which is readily connectable to a second structure and is designed to be easily grappled and manipulated by a robotic device for insertion and coupling with the socket. Cooperable automatic locking means (35, 49) are provided on the probe shaft (43) and socket housing (14) for automatically locking the probe in the socket when the probe is inserted a predetermined distance. A second cooperable locking means (92, 25) on the probe shaft (43) and housing (14) are adapted for actuation after the probe has been inserted the predetermined distance.

Abstract: An apparatus for mounting and retaining a component on a shaft including a tubular shaft having an aperture extending radially therein, and a retaining ring adapted to fit over the shaft, including a center post wherein the center post is positioned within the aperture on the shaft when the retaining ring is assembled thereon.

Abstract: An adjustable hand grip that can slide along the vertical supports of an orthopedic crutch is provided. The hand grip can be easily fixed to the supports at different vertical elevations to accommodate the user by providing a sleeve that surrounds and slides over each vertical support. Each sleeve has an aperture that can be aligned with the apertures in the vertical support. A bracket that extends between the vertical supports rigidly connects the sleeves. A locking member for locking the sleeve to a vertical support is provided and comprises a generally U-shaped clamp that surrounds a portion of the sleeve and a pin that can be inserted through aligned apertures in the sleeve and vertical support so that the hand grip is firmly fixed to the vertical support.

Abstract: An improved center post of a collapsible umbrella comprises a retainer body on which two guiding holes are formed to respectively receive therein a first retaining pin biased by a spring and a second retaining pin biased by a spring. The retainer body is inserted into an inner tubular section of the center post to have the retaining pins which are spring-biased to respectively partially project out of two through holes formed on the inner tubular section.

Abstract: A scaffolding frame to which a story can be added, comprising vertical stands which are formed as hollow sections, horizontal struts which are secured to the vertical stands, and at least one joining sleeve which is inserted into a vertical stand and can be set at a specific height by means of a safety bolt which is inserted through an opening provided in the side wall of the joining sleeve and an opening in the vertical stand which is in alignment with the opening in the joining sleeve, the scaffolding frame being characterized in that the joining sleeve has radially extending peripheral expansions on its side wall, that the vertical stand is provided at each of its ends with a section end serving as a stop for such peripheral expansions, each section end covering the cross sectional opening of the section of the vertical stand in a circular ring-shaped form and the inner circular diameter of the section end corresponding to the outer diameter of the joining sleeve without peripheral expansions, and that the

Abstract: A linear spacing device has first and second elongated components, which may be telescoping hollow tubes, each having linear surfaces engaging each other in sliding relationship. Each component has spaced holes disposed at regular linear intervals along its length. The intervals between the holes through the second component are different than the intervals between the holes through said first component. A pin or similar means is insertable through selected aligned holes through the first and second components to secure them in a selected orientation. Thus the overall length of the spacer can be adjusted in small increments substantially less than the diameter of the holes. The device further includes an extendable linear actuator engageable with a surface of each of the components to extend the overall length of the spacer. The actuator is removable from the device after the components are secured together.

Abstract: A universal joint (10) for a steering gear input shaft (11) includes a yoke (12), a bolt (14) movable into an installed position in the yoke, and a spring clip (22) for locking the bolt in its installed position in the yoke. The spring clip (22) moves with the bolt (14) when the bolt is moved into its installed position in the yoke (12), and has first and second portions (202, 212). The first and second portions (202, 212) of the spring clip (22) have locking positions in which the first portion (202) engages the bolt (14) and the second portion (212) interlocks with the yoke (12) to block movement of the bolt out of the yoke. The second portion (212) of the spring clip (22) moves resiliently into its locking position to interlock with the yoke (12) upon movement of the bolt (14) into its installed position in the yoke (12).

Abstract: A telescoping arm has a rod slidable within a sleeve defining an interior bore. A bushing attached to the rod slides within the bore and has a substantially rigid block constrained by the bore against substantial rotation or lateral movement. The bushing further includes a spring portion biased against the sleeve to provide frictional resistance to telescoping of the apparatus and to prevent the bushing from rattling in the bore. The spring responsively accommodates small lateral and rotational forces, while the block bears more substantial loads.

Abstract: The heat shield according to the invention makes it possible to protect a structure from a very high thermal flux. It is mainly constituted by tiles (2) fixed to a support structure (4) by means of a spring (8) fixed in translation with respect to a tile (2) and on which bears a locking arm (10). The latter can be fixed to the support structure (4) by means of locking screws (30), which are accessible from the outside through locking orifices (12) in the tile (2). The compression of the spring (8) allows locking to take place and also a satisfactory heat exchange from the tile (2) to the support structure (4), which can be cooled by cooling medium flow ducts (14).

Abstract: A telescopic construction includes a first tubular section provided with an axially extending slot and a guide seat having a central through hole and an inclined guide notch extending downward from a top side of the guide seat and communicated with the central through hole. The first tubular section extends into the central through hole such that an upper portion of the axially extending slot directly faces the inclined guide notch. A second tubular section is slidably disposed inside the first tubular section and has a radial hole aligned with the axially extending slot. A positioning member, disposed inside the second tubular section, has a stud biased to project through the radial hole and the axially extending slot. The stud engages the inclined guide notch and an upper end of the axially extending slot when the second tubular section is expanded from the first tubular section.

Abstract: For supporting of formwork in constructing buildings, use is made of steel post shores (props) having a pin with recessed areas thereon. When the prop has to be brought from the loaded to the unloaded position, such pin is changed of position in the prop so as to allow the inner tube to be lowered within the outer tube of the prop. The invention provides a new pin-design such that after assembling the prop it can be clearly seen whether the pin finds itself in the correct position or not. For that purpose, use is made of a pin having a recess and a flattened portion; by axial displacement of the pin this portion rests on a ring or on an inner tube under changing its angular position, which is well visible for the user. Alternatively a cylindrical pin may have two cams resting on a ring; by axially displacing this pin it will rotate over 90.degree. and the inner tube will be lowered in the outer tube, which position is clearly visible for the user.

Abstract: A shaft unit, has a shaft having an axis, a gear wheel mounted mounted on the shaft, the gear wheel having a flange and a first bore formed in the flange the shaft having a second bore which is a continuation of the first bore, the first and second bores have the same axis extending perpendicularly to the shaft of the axis and also having the same diameter, and damping device having a spring sleeve composed of elastic material extending in the first and second bore and inserted in the first and second bores in a form-locking fashion between the shaft and the gear wheel, the spring sleeve acting as a force-transmitting and damping member.

Abstract: A snap lock will hold in assembled relationship two tubular parts one within the other in telescopic relationship. The locking mechanism has a rectangular base with rectilinear outer ends and a button urged by a spring perpendicularly away from the base. The base will slide within tracks along the inner walls of the male tubular part and the button will project through an aperture in the wall of the male part which is complementary to the shape of the button. The female tubular member has an aperture in its walls which is also complementary to the shape of the button such that the button will project into the aperture in the female member when one aperture is aligned over the other.

Abstract: A post and ball type hitch apparatus intended for use with a conventional hitch socket is disclosed. The apparatus includes a post formed of a generally elongate cylindrical member having a top portion, a central portion and a bottom portion. The bottom portion of the post is adapted to attach to a bumper or frame of a vehicle, and the top portion of the post includes an annular groove therein. The apparatus also includes a ball having a cylindrical channel formed therein, for insertion thereof over the top portion of the post, and a cylindrical bore formed therethrough which intersects the cylindrical channel in such a manner that the bore of the ball is co-extensive with a portion of the annular groove of the post when the post is inserted into the cylindrical channel. The apparatus also includes a cylindrical pin which can be inserted through the bore and which becomes engaged with a portion of the annular groove of the post in order to secure the post in the cylindrical channel of the ball.

Abstract: An invention for facilitating the installation and removal of a partition or similar wall-like structure from the interior sections of an aircraft, including a support member, which is attached to any solid or structural section of the aircraft, and a partition fitting, which is secured along any edge of the partition or wall-like structure. The partition is then mountable within any area inside the aircraft by engaging the respective components in joined connection and securing them using any conventional means. The support member comprises a base plate and a section extending vertically from the base diminishing in thickness to form a shank member adaptable for releasable engagement with the partition fitting component of the device. The partition fitting includes a peripheral channel defined by parallel face opposed elements and is adaptable for connection along any edge of the partition or wall-like unit intended to be installed inside the aircraft.

Abstract: An apparatus and method for connecting a rotatable hub to a drive shaft is disclosed in which the rotatable hub has an axial opening and a radial through opening between an outer surface of the hub and the axial opening of the hub. A rotatable shaft having an axial slot is positioned in the axial opening of the hub with the slot facing the radial through opening of the hub. One or more pins are inserted through the through opening in the hub into the slot in the shaft to insure rotation of the shaft and the hub together. The radial through opening may be covered at the outer surface of the hub to hold the pin in the through opening and in the slot.

Abstract: The normally multi-part gas turbine engine labyrinth seal outer portion which carries an abradable lining, is formed from a single piece and has a groove machined in its periphery for the receipt of the feet of respective stator vanes. Pins are fitted in pairs through the walls of the groove to provide lateral location for the feet. The pins and a groove liner are made from an anti-frettage material.

Abstract: A scroll-type hermetic compressor is disclosed including within a hermetically sealed housing a fixed scroll member assembly, an orbiting scroll member assembly, a frame member, and a crankshaft. The fixed and orbiting scroll member assemblies each include a separately formed involute wrap member interconnected with a plate member by means of a plurality of pin members received within corresponding axial bores in the wrap member and plate member, respectively. The plate member of the fixed scroll member assembly is mounted to the frame member, while the plate member of the orbiting scroll member assembly is mounted to a drive hub member operably coupled to the crankshaft. In one embodiment, the interconnecting pin members fit loosely within the bores in the wrap member such that the wrap member is movable with respect to the plate member, thereby providing radial compliance between the fixed and orbiting scroll member assemblies during compressor operation.

Abstract: Adjustable fitments for attaching any one of a variety of implements to the ends of the lifting and tilting arms of a tractor of the type normally used with front end loaders. Each fitment has a base member and a travelling member movably connected together by a rod assembly, such as a threaded rod assembly, whereby the spacing between the members can be adjusted to coincide with that of the mounting pins of the implement to be attached. Each of the members has a socket for receiving and holding one of a pair of vertically spaced horizontally disposed implement mounting pins. One of the sockets opens forwardly and the other socket opens upwardly. A manually operable latch mechanism is provided on the member which has the forwardly open socket to lock a corresponding implement pin in that socket and thus retain each pin of the pair in its respective socket.

Abstract: A pumping system for a heavy oil and sand slurry from a downhole location to the ground surface includes a conventional screw type pump having a rotor and stator. At the bottom of the stator at the inlet thereto is mounted an attachment including a sleeve having a number of slots in the side surface into which the material feeds. Inside the sleeve is mounted a shaft having an auger flight along part of its length. A coupling at the upper end of the shaft connects to the lower end of the rotor and can be engaged and released by rotation of the rotor. The auger flight assists in forming the materials including any excess sand into a suitable slurry for feeding to the inlet of the pump. The auger feeds the material more effectively to the inlet thus maximizing efficiency of the pump. The device thus avoids sand blockages which are common problems in pumping systems of this type.

Abstract: A baggage cart intended to be selectively coupled to other carts to form a train of carts comprises a body and an undercarriage supporting the body. The body includes a double-walled plastic floor, a double-walled plastic roof, and a pair of double-walled plastic end members. Each of the end members has integral lower and upper extension portions extending toward and being fastened with the longitudinal ends of the floor and roof, respectively. The undercarriage includes a plurality of metal stringer members extending substantially the length of the body and attached thereto. A tower assembly is secured to the stringer members, and a steerable front axle assembly is disposed beneath the tower assembly, with a bearing member interconnecting the tower assembly and front axle assembly such that the front axle assembly is rotatable relative to the tower assembly.

Abstract: A concealed hinge for switching boxes which is unhingeable, the hinge having a first and second hinge part. The first hinge part having a bearing eye attached to an inside of a door leaf. The second hinge part surrounds the first hinge part in the shape of a U and is connectable to a vertical frame member of the box. The second hinge part has two bearing eyes on ends of a U-shaped member. The hinge parts are connected by a bearing bolt arrangement.

Abstract: A truss connecting joint for a crane is disclosed in which the truss frame has parallel chord members each comprising two beams having I-shape cross-sections, a female ear having a pair of parallel spaced apart plates projecting from an end of one of the beams toward the other beam and a male ear including at least one plate extending from the other beam and positionable between the plates of the female ear. When the plate or plates of the male ear are positioned between the plates of the female ear, the two ears may be joined together by a member extending through the ears.The connecting joint may be positioned between two truss lace members which are perpendicular and affixed to two parallel chord members of the truss frame. Diagonal lace members are also affixed to the truss frame adjacent to the affixation location of the perpendicular lace members to the chord members.

Abstract: For power transmission between a wooden beam and another building component, for example another wooden beam, a blind bore and a vent bore opening into the bottom of the bore are formed in the wooden beam. An insert body is pushed into the blind bore. This body comprises two spaced end plates whose outer cross-section corresponds to the cross-section of the blind bore, and at least one, preferably four, power-transmitting bars whose ends are welded to the opposing sides of the end plates. Bar dowels are then driven in from the side of the wooden beam so as to penetrate spaces between adjacent power-transmitting bars. Epoxy resin is then pressed into the blind bore from the outside until the entire blind bore and preferably also part of the vent bore are filled in with resin. When the resin has hardened, the resin body and the steel parts form a composite body. Connecting members may be attached to the outer end part.

Abstract: Tip retainer mechanisms are designed primarily to secure a tip to an adapter nose for use in a variety of applications. In applications where a spring retainer is located in a recess of the adapter nose and trapped in the recess by the assembly of the tip thereon, it is necessary for the spring retainer to be properly positioned in the recess to enable easy insertion of the pin through the respective holes in the tip, adapter nose, and spring retainer. In the subject arrangement, the holder substantially encircles the outer diameter of a spring retainer. When assembled, the holder and spring retainer are placed in a recess of the adapter nose and a bore of the spring retainer is substantially axially aligned with a transverse bore of the adapter nose. Furthermore, the holder is made of an elastomeric material and has a thickness greater than a depth of the recess.

Abstract: A brake hanger suspension for suspending and securing a brake hanger between a pair of ears on a truck side frame of a railroad car wherein a pair of retainer blocks, between which the upper portion of the brake hanger extends, are locked together and between the ears by mating formations, and the resulting assembly locked together and in place by a U-shaped key or retainer.

Abstract: A connecting link for use on a bucket loader mountable on a tractor to control the pivotal movement of the bucket relative to the mounting frame to which the bucket is attached is disclosed wherein first and second members are telescopically associated to permit a varying of the effective length of the connecting link. A first pin is engageable through a first set of alignable holes through the first and second members to fix the telescopic position of the connecting link in an operative position. The first pin has a size sufficient to withstand the operating forces exerted on the connecting link during operation of the bucket. A second pin is engageable with the first and second members through a second set of alignable holes therethrough to shorten the effective length of the connecting link to a transport position and permit a rollback of the bucket for transport.

Abstract: A concealed hinge for switching boxes which is unhingeable, the hinge having a first and second hinge part. The first hinge part having a bearing eye attached to an inside of a door leaf. The second hinge part surrounds the first hinge part in the shape of a U and is connectable to a vertical frame member of the box. The second hinge part has two bearing eyes on ends of a U-shaped member. The hinge parts are connected by a bearing bolt arrangement.

Abstract: A locking device or button for hollow stem auger couplings including an outer body section having an internal bore, a locking pin assembly mounted within the bore, and cooperating cam structure for moving the pin assembly a predetermined distance between locked and unlocked positions. Seal means at opposite ends of the bore keeps water and dirt out of the bore and protects the cam structure.

Abstract: A sleeve joint for driving an impeller on a rotatable shaft includes a sleeve positioned between the shaft and the impeller and including at one end a closed groove which is positioned adjacent a corresponding groove in the shaft, the grooves jointly receiving a wedge permitting joint rotation of the shaft and the sleeve, and at the other end a pin for joining the sleeve and the impeller.

Abstract: A synchronizer assembly having a clutch collar disposed between axially spaced friction rings. Blocker pins are mounted by a cylindrical shoulder at one end thereof into cylindrical bores formed in the friction ring. The cylindrical shoulder is the same diameter of at least the portion of the blocker pin immediately outwardly of the friction ring. The cylindrical bore in the friction ring and the cylindrical shoulder of the blocker pin received therein have registering grooves formed therein and a locking pin is pressed into the registering grooves to lock the blocker pin to the friction ring.

Abstract: A tool assembly for mining machines and particularly for coal planes or coal cutting machines comprises a cutter which has a shank portion which is engaged to a seat of a size comparable to the shank portion of a cutter holder and it is held in that position by a locking pin which extends through aligned bores of the holder and the shank portion which may be retracted into a knockout slot defined in the shank portion which is closed on each side by a portion of the cutter holder in an arrangement in which the locking pin may be retracted into the knockout slot for removal of the cutter.

Abstract: The impeller mounting apparatus includes one or more pins extending through the hub into the shaft with the pins being retained in the holes by means of a resilient metallic band of continuous construction which is forced onto the hub into grooves or recesses which prevent the dislodgement of the band and the inadvertent loosening of the impeller on the shaft.

Abstract: A mounting structure is disclosed including two pairs of spaced apart parallel rails with a longitudinal slot separating each of the pair. A trackway is formed under each pair of rails and a slider is slidable in the trackway and may be connected to a third rail orthogonally mounted on the pairs of rails, by means of a bolt passing through the slider and engaging a nut in a T-shaped slot in the third rail.

Abstract: A telescoping extension chute has a first semicircular section with an inlet end for pivotal connection to a main chute on a mixer truck and a pair of tubular tracks attached along upper longitudinal edges. An intermediate section with a semicircular cross-section of larger radius telescopes over the first section and has a pair of tubular tracks attached along upper longitudinal edges which extend through slots formed in the bottom walls of the first section tracks. A third section with a semicircular cross-section of still larger radius telescopes over the intermediate section and has a pair of bars attached along upper longitudinal edges which extend through slots formed in the bottom walls of the intermediate section tracks. Rollers attached to the tracks cooperate to provide relative telescoping movement and a locking mechanism prevents relative movement in any extended position.

Abstract: A movement blocking apparatus having an inner locking ring rotatably mounted within a housing is disclosed. The housing contains slits which, in a locked position, align with inclined plane portions of the locking ring. Notches reside axially adjacent to the inclined plane portions of the locking ring. A blocking pin, which blocks movement of a shaft, is inserted in the housing slits, causing the locking ring to rotate away from the locked position due to operation of the blocking pin against the inclined planes. When the blocking pin has been inserted into the slits far enough to engage the locking ring notches, a spring causes the locking ring to return to the locked position and entrap the blocking pin.

Abstract: A hand rail assembly for installation between opposing surfaces includes rod structure and rod support structure adapted to be mounted on the opposing surfaces. The rod support structure is preferably slidably engageable to the surface and preferably includes a body having on a side at least one projection adapted to be received by a complementary depression in the surface so as to prevent movement of the rod support structure along the surface. Rod positioning structure on the opposite side of the body positions the rod structure between the rod support structure so as to prevent disengagement of the rod support structure from the surface while permitting sideways insertion of the rod structure. Locking structure for locking the rod structure to the rod support structure is also provided. The rod structure is preferably of a length substantially that between the respective rod support structure such that the rod support structure cannot be removed without first removing the rod structure.

Abstract: A hand rail assembly for installation between opposing surfaces includes rod structure and rod support structure adapted to be mounted on the opposing surfaces. The rod support structure is preferably slidably engageable to the surface and preferably includes a body having on a side at least one projection adapted to be received by a complementary depression in the surface so as to prevent movement of the rod support structure along the surface. Rod positioning structure on the opposite side of the body positions the rod structure between the rod support structure so as to prevent disengagement of the rod support structure from the surface while permitting sideways insertion of the rod structure. Locking structure for locking the rod structure to the rod support structure is also provided. The rod structure is preferably of a length substantially that between the respective rod support structure such that the rod support structure cannot be removed without first removing the rod structure.

Abstract: A modular assembly is provided for use in frame structures which are assembled by joining frame members to connector or fitting members to allow such structures to be easily and quickly assembled and disassembled without the need for a separate assembly tool. In the assembly the frame member telescopically engages the fitting member and both members are constrained from relative rotational and translational movement by a resilient retainer. The retainer has a general spring-like band configuration which includes a backbone portion having two open extending ends. The retainer is flexed over one of the joined members and its backbone engages at least one half of the perimeter of that member. The installed and tensioned length between the two retainer ends is greater than the length between the same ends in a free state, thereby clamping the structural members together. An alignment pin extends radially inwardly from the retainer backbone and engages both members to lock the retainer in place.

Abstract: A slack adjuster for vehicle brakes is adapted to be mounted between the vehicle brake chamber and the vehicle brake operating shaft and includes a body which positions a drive member movable relative thereto on the brake operating shaft. A lever arm is pivoted to the body and there is an adjustable connection between the lever arm and the drive member for adjusting the relationship between the drive member and the body in response to body movement required for a brake application. The improvement herein is specifically directed to a device for connecting a brake rod to the lever arm and more specifically to a bushing threaded upon the brake rod and rotatably positioned within the lever.

Abstract: A flexible retainer for coupling an inner polygonal stud and an outer tubular member includes an elongated arm from which a pair of spaced fingers transversely extend. The outer tubular member includes a polygonal bore into which the inner stud is inserted in a telescoping manner. The inner stud includes a transverse hole which when aligned with diametrically positioned lateral apertures in the outer tubular member forms a generally transverse channel in the telescoping member combination. With the arm of the retainer positioned around a portion of the periphery of the outer tubular member, each of the fingers positioned thereon may be inserted within a respective lateral aperture of the outer tubular member so as to extend into the transverse hole of the stud in securely coupling the two telescoping members.

Abstract: Coupling assembly joining two profiled rails, more particularly for use with a shower partition, the first profiled rail having an opening extending over its entire length and an inner space. A clamping element is mounted in this inner space and has a threaded hole in which a screw threads, the second profiled rail being secured to the first profiled rail by tightening of the said screw. In order to facilitate assembly and make it possible to carry out subsequent mutual alignment of the profiled rails with little effort, there is provided that the clamping element be insertable from the side and at right angles to the longitudinal direction of the first profiled rail through the above-mentioned opening and into the inner space, one leg of the second profiled rail passing through the opening into the inner space. This leg is clamped in a gap which is formed between a bearing surface of the clamping element and a web of the first profiled rail and/or a support element.

Abstract: A radially resilient caliper pin assembly for slideably mounting a disc brake caliper to a torque member comprises an elastomeric core and two preferably metal shell members bonded to the elastomeric core to form a split-shell case about the elastomeric core. The shell members each provide substantially flat outer surfaces adapted to lie against corresponding surfaces of the caliper pin receiving way.

Abstract: There is disclosed a retaining ring for sockets which are attached to the shaft of a power driver, such as the pneumatic air tools, which is a molded elastomer ring with a diametric, integrally molded pin with a metal sleeve surrounding a portion of the pin. The sockets are provided with a receptacle which receives the shaft end of the driver and flats are provided on the shaft and receptacle to transmit torque. A transverse bore is provided in the shaft end and this receives the pin of the retaining ring. The specific improvement of this invention is a metal sleeve about the portion of the pin which extends across a boundry interface between the shaft end of the driver and the inside wall of the socket member to provide reinforcement to the pin, resisting shearing and abrasive wear.

Abstract: Force upon the cutting head of a glass cutter will displace it rearwardly into the handle, thereby opening a valve by shifting an interconnecting tubular stem, admitting air into the reservoir. The air passes through the stem, the lubricant flows along its exterior, and both pass through a wick disposed to apply the lubricating fluid to the cutting wheel.

Abstract: A tool holding member is coupled to a driving or spindle member by a lug-and-slot universal type coupling member. The three members are held against axial separation by a pair of resiliently yieldable retaining rings which coact with the coupling member to allow the tool holding member to float radially relative to the spindle member. Means are provided for locking tools of various diameters in the tool holding member while providing a positive drive between the holding member and the tool.