Abstract: A nose piece for inserting fixing elements into predefined seats in a work piece includes a drive channel for receiving a lower end of a drive rod. The drive rod is movable from an initial upper position, through a first intermediate position, to a lower position when acted on from above on by a drive force. A lower face of the nose piece is adapted to receive a first fixing element. At least one finger is biased toward a side wall of the nose piece. When the drive rod exerts a force on an actuator, the actuator moves the finger from a closed position, in which a lower portion of the finger is disposed under an outer portion of the flange of the first fixing element, to an open position, in which the lower portion of the finger is disposed away from under the outer portion of the flange of the first fixing element.
Abstract: A cap assembly for an automatic cap feeder and fastener driver comprises a plurality of relatively thin, domed metal discs that can be pierced by fasteners discharged from a fastener driver such as a nail gun without bending the nail or jamming the driver, with the caps being connected together by a paper backed adhesive tape mounted on the undersides of the concave caps, with the caps having outer edges that are sufficiently sharp that they sever the tape from the strip of caps when the caps are driven into a substrate after a fastener has penetrated the caps. The fastener driver includes improved feeder teeth and an anti-backup pawl that extend into recesses in the track. A cover encloses an open edge of a cap storage basket.
Abstract: Closer comprises a cylindrical housing defined by a front end and a rear end, the housing being formed with an axial bore having an enlargement in the front end. An air-driven cylinder is fixedly mounted in the bore and has an axial drive shaft reciprocable therein extending toward the front end and terminating in an impact head normally in an inward position. Reciprocably disposed in the enlargement is an annular trigger loosely surrounding the impact head and normally in an outward position extending down beyond the front end of the housing and movable to an inward position when the housing is lightly depressed over the fastener. An actuator in the housing is moved by the trigger as it approaches its inward position to activate the cylinder and slam the impact head downward to close the fastener. In a modification the cylinder is replaced by a solenoid.
Abstract: A machine (1) for attaching buttons, rivets or the like, preferably to articles of clothing, which buttons, rivets or the like consist of an upper part (124, 125) and a lower part (67, 68) which are fed to an upper tool (9) and lower tool (10) from magazines and are brought into form-locked connection with each other with the interposition of the material (167) by the stroke of a ram (140); in order to optimize the use of different button parts, it is proposed that the upper tool (9) and the lower tool (10) be arranged opposite each other, lying in each case one behind the other in a row on the upper (51) and lower (48) arms of a U-shaped carriage (30) by the positioning of which the upper tool (9), which is to be placed in action in each case, enters into coupling position with respect to the ram (140).
March 27, 1992
Date of Patent:
November 23, 1993
Schaeffer GmbH, William Prym-Werke GmbH & Co. KG
Theo Breuer, Karl J. Kochs, Heinz D. Kopatz, Ulrich Viering, Gunter Wolfertz
Abstract: This relates to the production of folders such as those commonly used for binding loose sheets of paper into booklet form. There is provided a method and an apparatus for setting fastener elements, such as tangs and eyelets, into selected portions of a blank made of heavy paper or cardboard. The apparatus employs rotary die holding elements defining a nip or nips therebetween for receiving one or more portions of a paper blank, particularly a blank folded to a T-shaped configuration. The apparatus includes means for applying setting forces to the fastener elements during the very brief interval of time that the fastener elements are disposed in the nip or nips between the die holders. Radially movable dies are mounted in certain of the rotary holders and cam means are employed to apply momentary fastener element setting forces to the fasteners.