Abstract: A system for mounting material directing impellers to the table of a centrifugal impact crusher includes an upstanding mounting plate having a slot extending through it which opens out of its top surface. An impeller has a rearwardly facing stob extending from it which slidably fits within the slot. A nub, which does not fit through the slot, is attached to the extremity of the stob and the stob is sized such that the nub and the rear surface of the impeller interact with the mounting plate to prevent the impeller from moving relative to the mounting plate in either circumferential direction. The sides of the slot are angled radially outwardly as they extend downwardly toward the table.

Abstract: A nose piece feeder for a power driver in which articles are guided from a feed passage into a discharge passage by a pair of jaws which are movable from a guide position to a driver access position. When the driver is activated to expel an article from the discharge passage, the jaws are moved to the driver access position permitting the driver to pass between them.

Abstract: Apparatus for orienting articles with a head and a shank such as bolts or screws with an inclined track on which articles are dumped adjacent its upper end by an elevator with a hopper. Some of the dumped articles fall off the track and are returned to the hopper by a chute while others remain on the track improperly oriented and some properly oriented with their heads bearing on rails of the track and their shanks depending between the rails. The improperly oriented articles are removed or kicked off the track by an overlying finger which is reciprocated generally longitudinally of the track. The properly oriented articles pass through a gate in the finger even when it is reciprocating and are accumulated on the track downstream of the finger. As needed, properly oriented articles are supplied from the lower end of the track to a feeder which propels them to a power screw driver or other driving device.

Abstract: Apparatus for feeding articles with a head and a shank one at a time head end first through a conduit to a staking press, driver or other power tool. One article at a time is fed sidewise into an axial passageway and is received on a slide rod with its shank extending into a pilot passage in the rod. The slide rod is moved to an extended position in the passageway which closes the inlet and compressed gas is admitted to the pilot passage to propel the article head first through the conduit. The slide rod is then retracted to open the inlet for receiving another article. The articles are admitted one at a time to the passage by a metering arm driven by a fluid motor.

Abstract: An apparatus for orienting a plurality of articles with a head and a shank. An elevator dumps the articles onto a track having a pair of laterally spaced apart rails which slope downwardly so that articles can slide toward the lower end of the track. Some of the articles fall off the track, others assume a desired orientation with their heads bearing on the rails and their shanks depending therebetween, and the remainder begin to slide down the track in other orientations. A gate associated with the track permits only those articles in the desired orientation to continue sliding down the track and prevents all the articles in other orientations from going past the gate. To remove the misoriented articles, a discharge section of the track immediately upstream from the gate is moved intermittently so that the articles fall off this section of the track.

Abstract: An apparatus for feeding articles with a head and a shank such as screws one at a time to a tool such as a power screwdriver through a hose. The apparatus has a pilot passageway into which articles are transferred one at a time by a metering arm driven by a fluid motor. Preferably, upon transfer, each article is instantaneously propelled through and discharged from the pilot passageway by a stream of compressed air discharged into the pilot passageway downstream of the inlet through which articles are transferred into the pilot passageway. Each article is propelled through the pilot passageway initially by aspiration and, subsequently, by the stream of compressed air impinging on the article. Alternatively, each article falls due to gravity through the pilot passageway and a portion of the hose and is then propelled through the hose by a stream of compressed air.

Abstract: In a fastener driving tool having a fastener holding nosepiece comprised of three concentric sleeves, the middle one of which is axially movable to carry a circumferential array of radially shiftable balls to and from inwardly cammed engagement against cam surfaces in the outer sleeve to grip the fastener head against the inner sleeve and release the head, improved structure wherein (1) the inner and outer sleeves have portions axially displaced from the middle sleeve which are threadedly connected to adjust the axial distance between the cam surfaces and inner sleeve for accommodating fastener heads of different axial thicknesses and radial tolerances; (2) to facilitate interchangeability of nosepieces, the inner sleeve is axially slidably retained on an adapter sleeve against a spring bias by a pin and slot connection with inner and adapter sleeves having means cooperable upon relative turning thereof to withdraw the pin from the slot and the pin being movable inwardly into engagement with a retaining ring