Contained on a stapler cartridge there is at least one distal slot capable of accommodating at least one firing wedge or the knife blade which is thereby capable of moving through the distal slot. There is further contained at least one proximal slot capable of accommodating at least the one firing wedge or the knife blade. The firing wedge or knife blade is able to move into the proximal slot exclusively in a proximal direction. Once the firing wedge or the knife blade is moved into the slot, t...

Method and apparatus for immediately measuring the amount of fasteners remaining in a fastening device's magazine by inspection without disassembly of the fastening device. A band fastened to the fastening device's magazine follower moves responsive to the motion of the magazine follower. Markings on the band indicate the amount of fasteners remaining in the fastening device.

An adapter for a stapler is formed in the shape of a saddle which straddles the neck portion of the stapler. A drive bar is affixed to the upper surface of the saddle and is angled so that when the nose portion of the stapler is inserted into a vertically confined toe space, the drive bar is outside of the toe space and can be actuated to drive a staple within the toe space by exerting a force on the drive bar by, for example, a hammer.

The invention concerns a rock drill (2) for activating a rotatable and reciprocable drill steel assembly (FIG. 1 ). A reversible motor (50) is coupled to a striking bar (3) for rotating the drill steel. The striking bar is struck by a percussion piston (10). A rotary fluid valve (15) is operating the piston. A disconnectable coupling (37,38,43) in normal operation couples both the valve (15) and the striking bar (3) with the motor (50). In special modes the motor operates only the percussion pis...

A rivet feeding assembly for feeding a plurality of rivets defining a set, in unison to a multiple-riveting machine having a press operably co-operable with a plurality of strikers and complementary rivet-receiving anvils in a machine riveting zone to effect multiple riveting by pressing, the assembly comprising: a track means comprising a plurality of rivet-retaining guides for retaining the rivets in a rivet heads-up orientation as a plurality of horizontal rows of rivets wherein each row defi...

A pneumatic hammer is provided with an adjusting piston (37) dependent on the supply pressure, which adjusts the stroke length of the working piston (16). Thereby, the same pneumatic hammer may be operated both at low and high supply pressures. With high supply pressures, either the early ending of the acceleration phase or the early start of the compression phase or the shortening of the working cylinder shortens the stroke length. Thereby, the pneumatic hammer performs impacts with a substanti...

A fastener feeding assembly for a fastener driving apparatus including a pair of spaced support members disposed in an opposed relation to one another along a feed path for a fastener package, the feed path having a proximal end leading laterally into a drive track of the apparatus. The feeding assembly includes a multiplicity of resilient bristles supported by one of the support members and extending transversely and toward the proximal end within the feed path. One of the support members suppo...

An automatic riveting machine produces squeezed precision rivet connections in any working direction, including an overhead working direction, while using rivets of different lengths. A rivet bore having a precision fit and linear squeezing motions result in a precision rivet connection. The rivets are also pressed into the rivet bore by a linear motion. For this purpose, the automatic riveting machine includes a drilling unit (2) with a drill bit (212), a lubricator (204), a rivet supply unit (...

A tractor steel post driver comprising an elongated driving assembly having an upper cylindrical pipe and a lower pipe, a bracket formed of two small parallel plates, each of the plates having a free end, each of plates having an aperture therethrough with a pin positioned through the aperture of the plates and apertures at the upper end of the upper pipe with the pipe located between the plates; a pair of collar bolts positioned with their head ends interior of the lower pipes and extending rad...

A stapler powered by a motor and gear train to move a head up and down through utilization of at least one pivotal arm having an elongated cam follower slot in the arm; a driven rotatable gear in the train gear and a pin on the gear to ride in and along the slot. The arm pivots about a spring-loaded axle. Clinching wings for clinching staples are positively driven upwardly and downwardly by a pivotal clinching arms. A manual unit is included for turning the gear train to assist in removing jams.