Abstract: A camshaft comprising a steel shaft and a plurality of cam pieces fitted on the shaft. The cam piece is made from a sintering alloy material and bonded to the shaft by sintering. The shaft has pin-receiving holes perpendicular to the axis of the shaft. The cam piece is formed on its side surface with a pin-receiving groove. A positioning pin has a lower portion tightly fitted in the hole of the shaft and an upper portion fitted in the groove to position the cam piece with respect to the shaft during sintering.

Abstract: A detent connection between a hidden release lever of a tilt-adjustable automotive steering column and an exposed hand lever of the steering column, the connection including a D-shaped socket in a tab on the release lever and a D-shaped plug-end on the hand lever. The flat portions of the D-shaped socket and plug-end face each other and each has a trough therein extending the full length of the flat portion and facing the trough in the other flat portions. The facing troughs define a detent tunnel in which a cylindrical coil spring is disposed in radial compression. The spring engages the troughs along the full lengths thereof to torsional and lonitudinal rigidity.

Abstract: A tolerance ring is provided with radial projections to achieve unidirectional or bidirectional axial retention, or angular retention relative to at least one abutting cylindrical surface. Spaced tabs, dimples or a continuous flange formed at one or both axial ends of the ring provide the axial retention function by engaging with one or two shoulders on the abutting cylindrical surfaces, and a radially projecting tab at a lateral end of the split ring provide the angular retention function by engaging in a groove in the abutting cylindrical surface. The axial and angular retention projections can project radially inwardly or outwardly depending on the particular application, and the axial and angular retention projections can be used individually or in combination as desired.

Abstract: A drive system for rotation of a photosensitive member carried in a removably mountable housing of a process kit used in an image-forming apparatus. The drive system includes a rotatable helical gear loosely carried on a shaft secured to the rotatable photosensitive member. The loosely mounted helical gear is longitudinally movable along the shaft of the photosensitive member and serves to limit any longitudinal movement of the photosensitive drum and thus the process kit housing relative to the image-forming apparatus.

Abstract: A circular hole through which a main shaft of a fuel pump is inserted is defined at the central portion of an impeller, one or plural pin holes are so defined around the circular hole that the centroidal position is not deviated from the rotational central axis, a first engaging portion is formed at an end of the main shaft to be inserted into the impeller, and a coupler provided with a second engaging portion which engages with the first engaging portion and a pin or pins to be inserted into the pin holes is used to secure the impeller to the main shaft. These members are so arranged that the impeller and the coupler are located respectively in point or line symmetry with respect to the rotational central axis of the armature in the pump or the main shaft, i.e. the respective centers of gravity of the main shaft, impeller and coupler are positioned on the rotational central axis of the armature in the pump so that the armature keeps its balance.

Abstract: An improved structure for assembling a gear to a shaft to be rotatably mounted in a housing including a rotatable shaft with a projection member radially extending therefrom and with the hub of a gear slidably mounted on the shaft so that one face of the hub of the gear is adjacent to and opposed to one side of the projection member and a fastening member cooperable with such hub face and opposed side of the projection member to restrain rotational movement of the gear relative the shaft.

Abstract: A coupling which transfers torque from one shaft to another through a fitting portion of a key and a keyway. Seal members are provided in gaps which are formed between opposite surfaces of the key and keyway and which do not transfer torque, so as to prevent entry of water into the gaps without bearing pressure due to the torque.

Abstract: Tooth assembly for a dredge cutterhead, the assembly including a universal male adapter edge for attachment to the cutterhead, a female detachable tooth, a key for locking the tooth to the adapter edge, and a key retainer for locking the key in place.

Abstract: A coupler assembly having male and female coupler members, the female coupler member having at least one linear open ended slot therein adapted to receive a drive pin on the male coupler member, the female coupler member also having an annular opening angularly displaced with respect to the linear slot, the male coupler member also having a depressible locking pin adapted to be depressed by the female coupler member as the drive pin is inserted into the linear slot, the locking pin being positioned to enter the annular opening in the female coupler member when the projection reaches the inner end of the slot, thereby locking together the coupler members.

Abstract: A motor vehicle clutch comprises two clutch plates or discs (4, 5) each mounted on a respective input shaft (9, 10) of a gear box. With the aid of a linearly movable pressure plate (6) it is possible to press alternately one clutch plate (5) against a pressure plate (7) stationarily mounted on the flywheel (1) and the other clutch plate (4) against the flywheel. Torque is transmitted between the movable clutch plate and the flywheel with the aid of spherical elements (16) located in grooves (12, 15) in the movable pressure plate and in a flange (8) firmly connected to the flywheel, while accurately centering the pressure plate at the same time.

Abstract: A hydrant includes one or more novel and improved features, namely: (1) a nozzle assembly comprising a nozzle and a retainer ring mounted from within the upper standpipe section of the hydrant; (2) an operating assembly defining an excess reservoir volume to receive valve stem lubricating fluid to prevent blocking movement of the valve stem; (3) a coupling assembly including a collar, a retainer ring for engaging one end of the collar against one standpipe section, and a retainer bar inserted through the collar and bent around an adjoining standpipe section; (4) a coupling assembly including a floating seal band carrying two seals, one of which seals against one standpipe section and the other of which seals against an adjoining standpipe section; (5) an otherwise conventional valve body but for a double-D valve body cavity in which a complemental boss of a valve member retainer disk is nested to prevent rotation therebetween, and also including a flat sealing gasket disposed between the valve stem and an ann

Abstract: A hydrant includes one or more novel and improved features, namely: (1) a nozzle assembly comprising a nozzle and a retainer ring mounted from within the upper standpipe section of the hydrant; (2) an operating assembly defining an excess reservoir volume to receive valve stem lubricating fluid to prevent blocking movement of the valve stem; (3) a coupling assembly including a collar, a retainer ring for engaging one end of the collar against one standpipe section, and a retainer bar inserted through the collar and bent around an adjoining standpipe section; (4) a coupling assembly including a floating seal band carrying two seals, one of which seals against one standpipe section and the other of which seals against an adjoining standpipe section; (5) an otherwise conventional valve body but for a double-D valve body cavity in which a complemental boss of a valve member retainer disk is nested to prevent rotation therebetween, and also including a flat sealing gasket disposed between the valve stem and an ann

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 hydrant includes one or more novel and improved features, namely: (1) a nozzle assembly comprising a nozzle and a retainer ring mounted within the upper standpipe section of the hydrant; (2) an operating assembly defining an excess reservoir volume to receive valve stem lubricating fluid to prevent blocking movement of the valve stem; (3) a coupling assembly including a collar, a retainer ring for engaging one end of the collar against one standpipe section, and a retainer bar inserted through the collar and bent around an adjoining standpipe section; (4) a coupling assembly including a floating seal band carrying two seals, one of which seals against one standpipe section and the other of which seals against an adjoining standpipe section; (5) an otherwise conventional valve body but for a double-D valve body cavity in which a complemental boss of a valve member retainer disk is nested to prevent rotation therebetween, and also including a flat sealing gasket disposed between the valve stem and an annular

Abstract: A self crimping connection for inner and outer members and the method of making the same includes providing the inner member with stepped cylindrical exterior walls defining an outboard wall of reduced diameter relative to an inboard wall with an annular groove in the outboard wall; providing the outer member with a stepped bore defining an internal outboard wall and an inboard wall to slidably receive the outboard and inboard walls, respectively, of the inner member, with an annular groove in the outboard wall of the outer member; a first bushing encircling the outboard wall of the inner member and a second bushing encircling the outboard wall of the outer member, with each of the first and second bushings having a body portion and a crimp collar portion, the arrangement being such that as the inner member and first bushing are axially pressed into the outer member and its associate second bushing, the crimp collar portion of the first bushing is crimped into locking engagement into the annular groove in the

Abstract: A system for the transmission of power formed by a block that has a channel, groove or canal of some length, one or more keys that come in contact with the groove, guide, or with the walls of the channel and with the key or keys holding a shaft or quill in eccentric holes in the keys. The system serves to eliminate or compensate for vibration caused by bent shafts or quills as well as the noise and wear that these can produce.

Abstract: A key for transferring rotating driving force between a driven and driving member. The key has a leg portion and a cross portion wider than and integral with the leg portion. The leg portion is positioned in a keyway of a first rotatable member and the cross portion is positioned in a keyway of a second rotable member. Rotating force applied to one of the rotating members is transferred to the other member through the keyways and the leg and cross portions of the key.

Abstract: Annular, circumferentially segmented components of a gas turbine engine are secured to a support structure by C-shaped couplings which prevent movement of the components in a radial and circumferential direction. The coupling has spaced apart legs which trap the component and support structure therebetween, and a key between the legs which engages a keyway formed by cooperating slots in the component and support structure.

Abstract: Device for mounting a protective cap (18) on a support (12), the support (12) having a base surface (20) intended to be at least partially protected by the cap (18), and a first bearing surface (28, 38, 54), the device incorporating a first rigid component (22, 32, 44), joined to the periphery of the cap (18), and a locking component (26, 40) situated between the first rigid component and the first bearing surface, characterized in that the locking component (26, 40) is inserted by sliding laterally between the first component (22, 32, 44) and the first bearing surface (28, 38, 54) so as to fix the cap (18) in position bearing against the base surface (20) of the support.

Abstract: A railroad switch mechanism wherein the switch points of a track switch are moved between normal and release positions by a switch machine connected to the switch points by throw rod, lock rod and detector rod assemblies which are adjusted to have predetermined lengths. The lock or detector rod assemblies have couplings which enable temporary disconnection from the switch points when testing to verify whether the operation of the switch to normal and reverse positions is within an allowable range of variations with respect to the stock rails with which the track switch is associated without affecting the adjustment of the length of the assemblies and requiring long and costly readjustment after the completion of testing.

Abstract: A flanged bushing mounting adaptor for use in mounting a flanged bushing in the hub of a shaft-mountable structure, the hub having a tapered bore with recesses formed therein, and the bushing having a tapered barrel and a flange with threaded and unthreaded holes therein. The adaptor has a tapered outer circumferential surface for wedging engagement with the oppositely tapered hub, and a tapered bore for wedging engagement with the oppositely tapered barrel of the bushing. The adaptor also includes a plurality of threaded bores corresponding to the unthreaded holes in the flange, for receiving screws or bolts to secure the bushing to the adaptor and to draw the assembly into the hub. Bosses, or recesses with set screws, corresponding to the recesses in the hub, may be included on or in the outer surface of the adaptor to prevent relative rotation between the adaptor and the hub.

Abstract: An arrangement for firmly mounting a body in an aperture located in a planar surface on a platen comprises a mounting plate which is inserted in a groove located on the perimeter of the body. Means are provided for urging a part of the plate projecting from the groove into abutment with the planar surface and holding the projecting plate part thereagainst.The planar surface and the opposing surface of the mounting plate form an acute angle therebetween prior to urging the projecting portion into abutment with the planar surface. The value of this acute angle is selected in respect of given parameters, so as to pre-stress the mounting plate when the projection is urged against the planar surface.

Abstract: An elastically conformable tapered pin-key for securing a part and a shaft where the part has a cylindrical bore for receiving the shaft and a keyway tangentially intersecting the bore, and the shaft has a tangential groove shallower than the depth of the intersection of keyway and the bore. The pin-key comprises two cylindrical surfaces converging at a small angle, and an axial cavity defining sidewalls sufficiently thin to allow the faces to elastically deform to conform to the keyway and groove. The pin-key is placed in the keyway and preloaded so that one face conforms to and engages the surface of the keyway and the second face conforms to and engages the surface of the groove in the shaft, thereby securing the part and the shaft against relative rotational or axial movement.

Abstract: In a steam turbine, a device for keying hubs of adjacent wheels together, wherein the wheels are not an integral part of the shaft of a rotor of the steam turbine and may be secured to the shaft by an interference shrink-fit at the surface of a bore through the hub of the wheel, comprises a substantially I-beam shaped key disposed in a keyway formed between adjacent hubs. A lip extends axially from the outer periphery of a pair of opposing end faces of adjacent hubs, the outboard surface of one lip of the pair of opposing end faces being in close proximity to the outboard lip of the other lip of the pair of opposing end faces. A respective pair of lands on each respective pair of opposing end faces defines a substantially radial slot respectively between the pair of lands. Streamlined fillets respectively transition the leading and trailing faces of each respective member of the pair of lands to the respective opposing end face.

Abstract: A throttle controlled induction passage assembly is shown as having a body with an induction passage formed through the body and a throttle shaft extending transversely of the induction passage and carried by the body, the throttle shaft having an axis of rotation about which the throttle shaft is rotatable, a throttle valve is carried by the throttle shaft for rotation therewith, and an abutment arrangement for preventing the throttle shaft and throttle valve from experiencing undue movement relative to the induction passage in both directions along the axis of rotation; a suitable thrust bearing is provided to permit application of the body and shaft in any position.

Abstract: A hydrostatic steering unit is presented with axial spool valve actuation, and a gerotor set with valving in the rotor side face. The gerotor set comprises an orbiting gerotor displacement device with rotor valving, and with an input drive system directly to the gerotor device without driving through the valving, and also with an axially movable valve with a torsion member between the orbiting gerotor member and the input shaft. There is a split actuation pin for the valve, an eccentric bushing for the pin, and an adjustment for the neutral position of the valve.

Abstract: A two mode operable piston pump has a cam lock with a shaft biased into the drive axial passage of a cam shaft to lock the cam shaft to a lever body, a lock edge on the lever body engaging a flat on a head portion of the cam lock. Inserting a power tool into the drive axial passage opposite the head pushes the shaft up and releases the cam shaft for operation of the pump in a power mode.

Abstract: A direct drive for deep-well drill bits on the Moineau displacement principle is provided with locking means detents (10, 11) which are disposed downstream of the working chambers (4) of rotor (3) and stator (2). Actuation of the locking means is effected by coupling throw-in members (13) introduced through the flushing passage from above. Passage through the working chambers and into the locking means detents groove (16, 20, 21) is rendered possible for the throw-in members on relative rotation of rotor and stator.

Abstract: A throttle controlled induction passage assembly is shown as having a body with an induction passage formed through the body and a throttle shaft extending transversely of the induction passage and carried by the body, the throttle shaft having an axis of rotation about which the throttle shaft is rotatable, a throttle valve is carried by the throttle shaft for rotation therewith, and an abutment arrangement for preventing the throttle shaft and throttle valve from experiencing undue movement relative to the induction passage in both directions along the axis of rotation; a suitable thrust bearing is provided to permit application of the body and shaft in any position.

Abstract: The circular friction lining carrier member having replaceable friction linings comprising radially inner and outer circumferential grooves in the carrier member to guide and hold the linings and a supporting element disposed between adjacent ones of the linings to transmit circumferential forces with the supportive elements being undetachably secured to the carrier member with radial clearance between the side walls of both grooves.

Abstract: A device for attaching an article, such as an armrest, a hand grip, etc., to a base surface is disclosed. The device comprises an attachment clip and an insert which is receivable in an aperture in the clip. The clip is secured in an opening in the base surface. A dentate structure is provided either on the insert or in the attachment clip, and a locking device is provided on the other of the insert or the clip to engage the dentate structure, thereby to secure the attachment clip and the insert together. The locking device preferably is a suitably shaped spring. The insert is either tubular in shape, or a longitudinal segment of a tube. Rotation of the insert to one orientation disengages the dentate structure and the locking device, enabling insertion and removal of the insert. Rotation of the insert to another orientation engages the dentate structure and the locking device for locking the insert against longitudinal shifting.

Abstract: A retaining pin assembly (16) for securing a replaceable earthworking tool (14) to a support member (12) includes a spring type pin (36) and a coacting sleeve (40). The pin assembly (16) is insertable through generally aligned openings (30,22) in the tool (14) and support member (12) and functions to lock the tool (14) to the support member (12) and to force an end portion (28) of the tool (14) into contacting relationship with shoulders (18,20) of the support member (12). Earthworking apparatus, such as impact rockbreakers and rippers, generally include a replaceable tool mounted on a shank or support member. Unless the tool is forceably held in contacting relationship with the support member, the retaining pin, tool, and support member are subject to damage. The retaining pin assembly (16) of the present invention secures the tool (14) and support member (12) in contacting relationship and maintains a continuous locking force between the tool (14) and the supporting member (12 ).

Abstract: A retaining assembly for retaining a key or the like within a slot that is defined in a housing includes a bar secured to the key. The bar includes an aperture through which passes a first end of a threaded rod. The rod includes a second end that is adapted to abutt against the housing. Threaded on the rod between the housing and the bar is a nut that may be threaded to bear against the bar producing a force against the bar that is transmitted to the key to prevent the key from sliding out of the slot. In the preferred embodiment, the slot and key are tapered.

Abstract: A telescopic drive shaft includes an axially extending inner shaft member slidably supported within an axially extending tubular shaped outer shaft member. Rolling bodies are mounted in one or a plurality of support members secured to the inner or outer shaft member. The rolling bodies project and roll along axially extending grooves in the other of the inner and outer shaft members. The rolling bodies provide relative sliding movement between the shaft members and also effect torque transmission between the shaft members. Each rolling body extends into at least one ring-shaped recess in its support member and guide balls located in the recess support the rolling body. Each recess is located in a plane parallel to the axis of the drive shaft, at least three guide balls are located in each recess, though a full ring of guide balls can be used.

Abstract: A wheel assembly adaptable for use with a motor vehicle, a light aircraft, and the like, or in a pulley system or gear train. The wheel assembly comprises an axle or spindle-retained hub member, and a removable wheel member that is releasably connected by unique snap/lock pins. The hub member is made of a more dense material than the material of which the wheel member is made. In the adaption for use with a motor vehicle, light aircraft, and the like, the wheel member (with a tire mounted on it) is significantly lighter than the conventional rim-mounted tire, because of the absence of the hub portion; and, therefore, the wheel member can be easily changed or removed by even the weak, the aged, and the handicapped. Additionally, because the customary bolt/nut or lug/lug nut fastening combinations are not used, the wheel member is easy to change or remove, and, as importantly, the need for a "lug wrench" is eliminated.

Abstract: Device for locking a male element such as a shaft engaging in the bore of a female element such as a wheel hub against axial displacement. An annular groove is provided in the bore of the female member and has a first annular surface engageable by an elastically deformable locking ring mounted on a reduced section of the shaft member. A displaceable member such as a nut is moveable relative to the shaft member and has a second surface engageable with the locking ring. At least one of the surfaces is tapered so that upon movement of the surfaces toward one another, the locking ring is displaced radially outwardly to engage in the groove and lock the elements together.

Abstract: A coupling for rigidly connecting two coaxial machine parts, like shafts, to transmit torque: The coupling includes first and second coupling halves, each having a respective end surface and the end surfaces abutting and being secured together. There are radially extending openings around the coupling and being defined by cooperatingly shaped and placed grooves in both end faces of the coupling halves. The grooves are profiled, e.g. semi-circularly or trapezoidally, thereby defining circular or hexagonal openings, respectively, when the coupling halves are secured. A removable cotter of similar profile to the opening therefor is inserted in each opening. The cotter has a slightly larger cross-section than the opening and the cotter and/or the opening in the vicinity of the cotter are deformable upon the coupling halves being brought together. Various recesses through the cotter permit deformation thereof. Alternatively, the flanges at the abutting ends of the coupling halves are weakened to deform.

Abstract: A detachable coupling provided between the helix and drive shaft of an injection molding machine is provided by a flattened end of the helix shaft received within a fork-shaped end of the actuation shaft so that respective boreholes are aligned for receiving therethrough a pin. An axially slidable locking sleeve is movable between a position preventing movement of the pin and a position permitting removal of the pin, and a resiliently urged locking detent ball and groove are provided at each of the positions.

Abstract: A stabilizer for use in conjunction with a rotating drill string of a rotary drilling rig. The cutting blades of the stabilizer are received in close tolerance relationship within a longitudinally extending slot formed in a main body portion of the stabilizer. The slot outwardly opens and includes opposed sidewalls and opposed ends. The blades have opposed sidewalls and opposed ends and are made complementary respective to the geometrical configuration of the slot. A groove is formed in each sidewall of the slot and in each sidewall of the cutting blade such that when the blade is positioned within the slot, the grooves jointly form spaced cylindrical passageways. A plurality of holding balls fill the passageways and are removably captured therewithin, thereby releaseably securing the blade to the stabilizer body with great force so that the blade cannot inadvertently become lost downhole in a borehole.

Abstract: An arrangement for mounting a gear on a drive shaft of a fuel pump includes a longitudinal slot dividing one end portion of the shaft into first and second cantilever sections. Shoulders formed in the slot on the cantilever sections abut a key extending transversly through the slot to protrude from the shaft and the key is received in keyways formed in the gear diametrically of each other and opening into a cylindrical aperture. The latter is sized to receive the inner end portion of the shaft with a press fit with end walls of the keyways abutting the protruding key to locate the shaft axially within the gear. The width of the slot separating the cantilever sections of the shaft is slightly greater than the diameter of the key thereby providing clearance between the key and the cantilever sections to allow deflection of the sections during press-fitting of the shaft in the gear.

Abstract: A dual pedal crank assembly for a bicycle or the like has a shaft defining a shaft axis and having a pair of ends one of which is flatted and tapered axially away from the other end. This one end further forms a locking surface lying substantially in a plane inclined to the shaft axis and forming therewith an acute angle pointed toward the other shaft end. A fixed crank cast integrally with the shaft lies on and defined a fixed-crank axis generally perpendicular to the shaft axis. A removable crank extending along a removable-crank axis is formed with a recess centered on a recess axis generally perpendicular to the removable-crank axis, and complementarily shaped to the one end of the shaft so that this one end can be received in the recess with the removable-crank and shaft axes aligned. The crank is further formed with a bore centered on a bore axis spaced from the recess axis and lying in a plane generally perpendicular to the recess axis.

Abstract: A ripper tip is detachably mounted on a wedge-shaped nose of a shank by an elongated retention apparatus. The retention apparatus comprises a resilient, expandible retainer defining a cavity therein, a lock pin partially disposed within the cavity and an elastomeric slug disposed in the cavity between the retainer and lock pin urging the retainer into bearing contact with the shank and the lock pin into bearing contact with the tip. The retainer is of U-shape section having bottom and side walls which are expanded by the slug to fill an opening formed by a wall through the shank, and also includes flanges at the upper ends of the side walls which do not expand within the opening, yet contact such shank wall.

Abstract: A fire hydrant of either the "dry" barrel type or the "wet" barrel type having an improved means of locking a replaceable hydrant nozzle to the hydrant barrel. The means for locking the hydrant nozzle to the boss of the hydrant barrel prevents removal of the nozzle by unauthorized personnel and it includes an elongated rod member having teeth thereon extending generally transverse of a longitudinal axis of the rod member, the rod member being wedged in a particular manner between the hydrant barrel and the hydrant nozzle after the hydrant nozzle has been inserted therein to a predetermined torque.

Abstract: A fire hydrant having an improved means of attaching the lower stand pipe portion to the hydrant valve body. The lower stand pipe is sealed to the valve body by means of a well-known push-on joining method and is prevented from separating therefrom by use of novel keying means. The keys can be removed should it become necessary to separate the lower stand pipe from the hydrant valve body.

Abstract: The present invention relates to a device for securing (joining or splicing) steel reinforcing bars; i.e., "rebars", together, end-to-end or to provide a deadend connection to one end of a rebar. More particularly, the invention includes a rebar connection body having rebar-receiving openings at either end and two rows of spaced-apart parallel openings along the length of the body. The invention further includes U-shaped staples which are inserted in the parallel holes and forcefully driven onto the rebars, broaching such to create a secure mechanical connection between the body and rebars.

Abstract: A fastener for joining a first force transmitter to an independent second force transmitter to assure continuity in movement therebetween. The first force transmitter has a hub with an axial bore therein. A first slot and a second slot, each of which has a recessed section on the bottom, are located on the housing surrounding the bore. The second force transmitter has a cylindrical body with an oval groove located adjacent the end thereof. First and second wishbone shaped clip members which surround the oval groove have first and second tabs located thereon. The cylindrical body is located in the axial bore of the hub means and the first and second tabs are positioned in the recesses of the slots. When the tabs are located in the recesses in the slots the cylindrical body is locked to the hub.

Abstract: A locking device for releasably fastening parts to rotors of fluid flow machines, the base portions of the parts to be secured fitting in a form-locking manner in at least approximately axially extending fixing slots provided at the circumference of the rotor, the locking device including fixing elements which can be inserted into depression means extending transversely with respect to the axially extending fixing slots and provided in the rotor and into recesses provided in the base portions of the parts to be secured. The depression means are provided at the region of the axially extending fixing slots and divide the flanks of each such axially extending fixing slot into approximately equal parts and the recesses provided in the base portions of the parts to be secured in the assembled condition of such parts coincide with the depression means.

Abstract: A hard-surfaced screw conveyor for centrifuges has a helical metal blade with a plurality of wear-resisting segments mounted on one side thereof, there being mating parts on the opposed surfaces of the segments and the blade which are slidably interengaged to prevent radial outward and axial relative movements of the segments and the blade.

Abstract: A multi-barrel carburetor for an internal combustion engine has a primary throttle shaft and a metering rod lifter cam thereon. The metering rod lifter cam is generally C-shaped and has an inwardly projecting tongue which fits within a tapered groove in the throttle shaft for securing the cam thereon. The C-shaped cam is first inserted over a flat on the shaft and the groove in the shaft is aligned axially with the tongue of the cam. Then the shaft is slipped axially while the cam is held in position thereby to engage the tongue with the groove for securing the cam onto the throttle shaft.

Abstract: Components for wear-resistant surfacing helical metal conveyor blades have segments of wear-resistant material of like shape conforming to the helix curvature for mounting in side-by-side relation on a face of the blade. The segments have at least one slot which extends through their inner end and diagonally across the segment toward its outer end. A bar is provided for insertion in each groove with its end projecting from the inner end of the groove, the projecting bar ends being welded to the blade face to prevent movement of the segments relative to the blade.