Abstract: A connecting-rod system for mowers in particular, wherein, for actuating elements driven by alternate motion, there are used rods mounted on a crank which can be linked to the drive shaft by fitting a crank pin into a seat in the shaft itself. On the crank pin there is at least one flat wall intended for properly positioning the crank pin itself by interacting with a corresponding flat wall provided in said seat.

Abstract: A cutting head for a strip mining machine is provided that has a unique arrangement of cutting arms for prolonging the life of the cutting head, which provides for efficient collection of disturbed mineral composite loosened by the cutting arms, and which has improved, replaceable cutting teeth. The improved cutting head comprises a rotatable axle member and a plurality of radially and longitudinally spaced cutting arms projecting generally radially outwardly from the axle member. A detachable cutting tooth is received within a receptacle at the outermost end of each cutting arm in a resilient force fit, and is retained within the receptacle by removable spiral pins. Flighting is provided for urging disturbed composite towards the middle of the cutting head, and the cutting arms in the middle of the cutting head are provided with impelling plates for urging the composite radially outwardly from the cutting head.

Abstract: A joint for demountably clamping a tubular member into a main bore in a socket comprises an auxiliary bore directed perpendicular to the axis of the main bore and intersecting it over a small arc and first and second collets that fit in the auxiliary bore. Part cylindrical bearing faces on the collets are shaped to conform to the curvature of the tubular member. A clamping bolt urges the collets together so that they press on the tubular member and retain it in the socket. Preferably a reinforcing insert fits the end of the tubular member and has a disc or annulus that registers with the collets to resist compressive loads on the tube.

Abstract: A coupling assembly for joining a guidance module housing to a bulkhead of a guided missile. The coupling assembly includes a plurality of levers extending through slots in the housing and bulkhead of the guided missile with a plurality of threaded fasteners extending through the levers and engaging a plate member integral with the housing. The threaded fastener is torqued to impart a pivoting motion to the lever about a fulcrum integral with the plate such that axial directed forces are transferred from the outer periphery of the lever to the housing which is forced to abut the bulkhead.

Abstract: In a mining machine or the like which incorporates cutting bits having conically shaped heads and located in sockets of bit holders having respective wear sleeves located on the shanks of the bits with the bit free to rotate with the sleeve interposed between the socket preventing wear mount; a retainer is provided maintained by the mount and engageable with a receptacle on the sleeve to insure against undesired ejection of the bit.

Abstract: A towing system for vehicles with rear bumpers, including an anchor plate mounted to the underside of the rear bumper, a bracket secured to the anchor plate with a channel therein and a pair of laterally disposed flanges projecting from the top edges of the channel, a tongue arranged to be slideably mated to the bracket and mounted in the channel portion thereof so as to dispose one end of the tongue rearwardly of the bumper, an end plate welded to the end of the tongue projecting rearwardly of the bumper, the end plate having a lip portion disposed above the end of the bracket in intimate abuttment with the rearward edge of the anchor plate, and a ball hitch mount welded to the end plate for mounting a ball hitch thereto for towing a vehicle.

Abstract: A locking device for securing a straddle-type adapter to the lip of an excavator wherein the C-clamp and wedge have cooperating arcuate surfaces and are bolted together whereby tightening the bolt moves the wedge on the arcuate surface of the C-clamp to tighten the fit of the adapter on the lip.

Abstract: A vehicle mounted towing system for use with tubular rear bumpers affixed to the frame of a vehicle at a height substantially above the trailer towing tang of the towed vehicle, including an anchor plate mounted to the underside of the rear bumper, a gusset attached to the top of the anchor plate and to the forward portion of the rear bumper, a bracket secured to the underside of the anchor plate and having a channel therein, one of the open ends of the channel facing the rear of the vehicle, a tongue slideably mateable with the channel in the bracket and extending therebeyond, a pin passed through matching holes in the tongue and bracket to lock the tongue in place relative to the bracket, an end plate with a lip along the top thereof secured about the rear end of the tongue, a standoff secured to the end plate and depending therefrom, a ball hitch mounting tang secured to the other end of the standoff, and a load transfer strap secured at one end to the end of the end of the standoff joined to the ball hitc

Abstract: A bushing, sleeve, bearing or like part is secured in a structural member with a clamping device which is screwed into the structural member at right angles to said part to cause a tapered portion of the device converging toward terminating a reduced diameter material end portion to forcibly engage the said part.

Abstract: A drill steel and a drill bit having a tip with a cutting element and a hollow open ended shank forming a polygonal socket which is fitted onto a complementary engagement portion at one end of the drill steel so that rotation of the drill steel rotates the bit. The engagement portion of the drill steel has an axial slot to hold a spring retainer clip with a protrusion. A slot is formed in the shank of the drill bit to receive the protrusion on the spring retainer clip to hold the bit in the axial position on the drill steel. An opening in the shank of the drill bit and a pin extending through the opening and through the axial slot in the engagement portion of the drill steel when a spring retainer clip is not located in the slot.

Abstract: A new turnstile is provided which is constructed from a minimum number of different extruded components and includes an improved turnstile control mechanism. The turnstile is comprised of a plurality of upstanding, spaced mounting columns which define a frame-like structure. One mounting column includes a plurality of spaced apart barrier arms extending radially therefrom. Closure means extend between at least a pair of mounting columns which are spaced opposite the one column. A pivot column is rotatably journaled intermediate the one and the at least a pair of mounting columns and includes a plurality of longitudinal grooves. A plurality of pivot column arms associated with each pivot column groove extend radially therefrom at spaced apart intervals to permit free passage between the barrier arms when the pivot column is rotated.

Abstract: A chuck assembly and collet for retaining an end mill tool against axial pullout. The collet includes a radially compressible body having a tapered outer surface, a central bore and a radial aperture extending from the outer surface into the central bore. The radial aperture, which includes larger and smaller diameter portions, has a movable pin mounted therein and adapted to extend into the bore to retain the tool. The pin has an undercut portion, with a spring or snap ring mounted around the pin in the undercut portion, said spring having a free diameter slightly larger than the larger diameter to provide a pressure fit when mounted therein.

Abstract: A fitting for connection to a metal plain end pipe includes a generally cylindrical sleeve section sized to receive and cradle a pipe end portion, an annular seal in the sleeve section for forming a fluid-tight connection between the pipe end portion and the fitting and a locking rod extensible into the sleeve section. The locking rod is received into a bore extending substantially tangentially through a wall of the sleeve section and communicating with a sleeve section interior surface over less than a cross-sectional circular periphery of the bore whereupon a segment of the wall of the bore forms an intersection with the interior surface along the length of the bore. The locking rod has a metal cutting tip for tangentially cutting a groove along the intersection in a pipe end portion received in the sleeve section. The locking rod is securely retained in the groove as a key for firmly locking the pipe into the fitting.

Abstract: A kingpin assembly is for a steering axle of the type which includes an inner axle member which pivotally supports at a mounting bore in each end thereof a steering knuckle and spindle extending outwardly therefrom. The kingpin includes an upper and lower section and an intermediate section therebetween. The intermediate section is provided with a helically splined outer surface which is rigidly retained within the splined mounting bore by an interference fit therebetween. The rigid upper and lower yoke arms of the steering knuckle are respectively pivotally mounted about the upper section and the lower section of the kingpin.

Abstract: A locking element for securing two interfitting or cylindrical members or tubes together comprising a helical or curved flat spring having an elongated recess at one end thereof and an inwardly turned pin adjacent the other end thereof, each of said cylindrical members having an aperture therein, said apertures adapted to be aligned and said pin adapted to be inserted through said recess and aligned apertures, the spring member compressively locking the interfitted members securely together, said spring element being secured in compressive engagement with the outermost cylindrical member when the pin is removed from the locking engagement with the interfitted members.

Abstract: The invention provides a coupling for releasably securing one end of a rod-like member. To this end a body is dimensioned to receive the rod end and support a locking element. The locking element is displaceable with respect to the body to engage the rod end and is associated with rotatable camming means. Partial rotation of the camming means imparts a camming action to force the locking element into locking engagement with the rod end and further rotation of the camming means withdraws the element to unlock the rod end. The locking partial rotation of the camming means is through an arc of substantially 90.degree. and the unlocking further rotation is through a similar arc in the same or the opposite direction.

Abstract: An end connector for joining with a similar connector to connect two fence sections of a floating oil boom having a central channel and wing so that the wing of one connector is received within the channel of another connector and shoulders to allow for longitudinal movement only, a lock pin movable within a first slot into and out of the channel, a second slot in the wing within the channel to receive the lock pin whereby longitudinal motion of the two connectors is prevented and means for maintaining the lock pin in the second slot in the locked condition including a latch plate with abutting camming surfaces.

Abstract: A roof drilling system which includes a drill bit with a hollow driven shank and coolant holes in the bit flutes connected to the inside of the hollow shank, a single driver unit connectible to the drill bit and also to extension driver elements which interfit with both the bit and the driver, all of the elements being hollow and connected by retainers which secure the parts during the drilling and aid in the withdrawal from the drilled hole.

Abstract: An adjustable leg assembly for use in any leg supporting application advantageously utilizing leg adjustability. The assembly includes a channel member, a telescoping member and a resilient spacer member. The resilient spacer member is fixed to the telescoping member and slidably mounted on the channel member. The telescoping member normally extends from one end of the channel member and can include a positive locking member engageable with the channel member at selected positions of adjustment. The resilient spacer member guides relative sliding movement while preventing direct contact between the channel and telescoping members. The assembly includes a pressure plate to urge the resilient spacer member into firm engagement with the channel member at selected times to frictionally secure the channel member to the telescoping member.

Abstract: A centrifugal pump, particularly for liquid fertilizer, whose casing has a central cavity housing an impeller in cantilever attachment to the end portion of a drive shaft. This drive shaft end portion forms a socket engaging the free end of the main drive shaft and is fixed thereto by retractable means.

Abstract: Structure for mounting a bulldozer assembly to a vehicle, such as a tractor. The mounting structure includes lift jacks connected to a radiator guard extending about the vehicle engine coolant radiator. The mounting structure includes a portion connected to the lift jacks and a portion received in a socket provided in a corner portion of the radiator guard. The mounting structure includes structure for removably securing the same to the radiator guard.

Abstract: A steering shaft coupling for a motor vehicle steering column constructed to join a steering shaft with a steering gear. The coupling has a pair of coupling parts and interconnecting members assembled to transmit driving torque from the steering shaft to the steering gear during normal operating conditions. The interconnecting members disengage the coupling parts when the steering gear is displaced axial toward the steering shaft in response to an axial force whereby said axial force will not be transmitted to the steering shaft.

Abstract: Electrical interconnection apparatus for coaxial cable and the like comprising a shielding sleeve removably slipped about, and covering access ports in, a tubular conductor featuring a snap-on retaining clip. An inwardly extending pin on the inner surface of the clip is inserted in aligned apertures in the sleeve and conductor to secure the sleeve in place. The clip is readily pried off to permit moving aside the sleeve for access through the ports to solder joints, for example.

Abstract: A detachable connection in which one of two members has an end telescopically receivable within a mating end of another member and carries a locking part threadedly adjustable transversely of the members into and out of locking reception within an enlarged portion of a slot formed in a sidewall of the outer of the two telescopically interfitting elements. The connection may be utilized for detachably securing different camera stands to a quick change adapter tube secured to the body of a camera.