Abstract: An improved door latch bolt assembly comprising a cylindrical casing having a front end, a back end and an external surface, and at least one tab extending radially outward from the front end of the cylindrical casing; a bolt; a bolt operating mechanism fixed to the cylindrical casing; and a faceplate having a front side, a back side, and a bolt hole adapted to receive the bolt in a sliding relationship; and a cylindrical sleeve comprising two semi-circular halves joined together, the cylindrical sleeve turnably received at the front end on the external surface of the cylindrical casing and slidably joined to the faceplate to permit the cylindrical casing and the faceplate to turn up to about ten degrees in either direction within the sleeve.

Abstract: An automated device for presenting fastener assemblies to the nosepiece of a fastener-setting tool as quickly as possible with the least amount of error. A pair of fingers connected to a tubular shaft and activated by a pneumatic piston assembly grip the fastener stem close to but spaced from the stem tip; and a second pneumatic piston assembly to displace the device towards the tool to physically insert the fastener stem into the nosepiece of the tool.

Abstract: A powered fastener installation apparatus and method wherein the successful installation of a fastener is indicated by directly detecting the event of the fastener stem breaking. The device releases any partially upset fastener before withdrawing from the workpiece so as to prevent damage to the workpiece. The fastener installation device includes means for transferring the fastener from a feed module to the pulling head and avoiding partial upsetting or disassembly of the fastener, which can lead to jamming the device. The pulling head and transfer apparatus are provided with a vacuum to retain the fastener without mechanical gripping, thereby allowing easy purging of the fastener and preventing the fastener from falling out of the device unintentionally. Moreover, use of the vacuum retention allows greater flexibility and tolerance of errors in the placement and angular orientation of the robot arm and workpiece.

Abstract: A powered fastener installation apparatus and method wherein the successful installation of a fastener is indicated by directly detecting the event of the fastener stem breaking. The device releases any partially upset fastener before withdrawing from the workpiece so as to prevent damage to the workpiece. The fastener installation device includes means for transferring the fastener from a feed module to the pulling head and avoiding partial upsetting or disassembly of the fastener, which can lead to jamming the device. The pulling head and transfer apparatus are provided with a vacuum to retain the fastener without mechanical gripping, thereby allowing easy purging of the fastener and preventing the fastener from falling out of the device unintentionally. Moreover, use of the vacuum retention allows greater flexibility and tolerance of errors in the placement and angular orientation of the robot arm and workpiece.

Abstract: A fastener stem collection device for attaching to a power operated fastening device for collecting fastener stems, having a reciprocating tube urged forward by air pressure against the fastening device, which tube has an air jet for introduction of pressurized air to its central bore to draw the fastener stem from the fastening device through the central bore and deliver it to a collection housing. The collection housing has a non-opaque inner tube with an open rear end, and an outer canister with a closed rear end and an open window located medially thereon. The outer canister is selectively affixable in a concentric relation with the inner tube to collect the stems during operation of the fastening device, but may be released and slid rearward of the inner tube to allow the collected stems to be discharged through the inner tube open end and out the outer canister window.