Abstract: In a hammer-strikable, powder-actuated, fastener-driving tool, a breech block is mounted within a generally tubular body by several resilient shock absorber structures, each including an elastomeric grommet, an eyelet having a tubular portion surrounded by the grommet and an annular portion, a washer interposed between the annular portion and one end of the grommet, and a screw attaching the breech block to the body. The screw shank extends through the grommet. The screw head bears against the washer. The breech block mounts a firing pin, which is biased backwardly to a normal position, and to which a hammer-strikable button is connected. A barrel mounted to the body so as to be axially movable with respect thereto has an elongate slot. A stud mounted upon the body extends through the slot. A washer disposed around the stud is biased against the barrel so as to impart frictional drag to the barrel.

Abstract: In a hammer-strikable, powder-actuated, fastener-driving tool, a breech block is mounted within a generally tubular body by several resilient shock absorber structures, each including an elastomeric grommet, an eyelet having a tubular portion surrounded by the grommet and an annular portion, a washer interposed between the annular portion and one end of the grommet, and a screw attaching the breech block to the body. The screw shank extends through the grommet. The screw head bears against the washer. The breech block mounts a firing pin, which is biased backwardly to a normal position, and to which a hammer-strikable button is connected. A barrel, mounted upon the body so as to be axially movable with respect thereto, has an elongate slot. A stud mounted upon the body extends through the slot. A washer disposed around the stud is biased against the barrel so as to impart frictional drag to the barrel.

Abstract: A construction anchor for mounting an object on a structure of masonry, concrete, metal or the like includes a metal anchoring portion and a plastic cap. The anchor is adapted to be inserted, metal end first, into a pre-drilled adhesive-filled hole. The cap has a flange that is larger than the hole diameter, so that the anchor may be inserted and seated in the hole at a consistent depth. When the adhesive has set, a screw or bolt is inserted through the plastic cap to engage the threads in an internal bore in the anchoring portion. The plastic cap serves not only to determine the depth of the anchor in the hole, but also to prevent adhesive and other material from entering the threaded interior of the anchor prior to use.

Abstract: In a strip of collated fasteners, each having a shank and a head, a carrier molded from a polymeric material has a sleeve for each fastener. Each sleeve has an annular portion and a breakable portion, which breaks into two segments as the fastener gripped by such sleeve is driven. The breakable portion, which is notched at one end, has a pair of similar, laterally opposed, outwardly opening, continuously curved concave recesses with open windows, from which portions of the fastener shank emerges. In a fastener-guiding tool, parallel ribs of a guiding device fit into such recesses, into close proximity with the emerging portions, so as to guide the strip between such ribs.

Abstract: A pneumatically actuatable dispenser for a two-part adhesive, as provided within a cartridge having two chambers and having a mixing nozzle mounted upto a first end, each chamber having a plunger accessible from a second end. A front frame holds the cartridge. A piston is arranged to be selectively driven within a cylinder in a forward or reverse direction. A pair of piston rods operate in tandem so as to drive the plungers toward the nozzle, when driven conjointly with the piston in the forward direction. A first valve, when actuated, delivers pressurized air from driving the piston in the forward direction. A second valve, when actuated, delivers pressurized air for driving the piston in the opposite direction. A third valve, when actuated while the first valve is actuated, vents pressurized air from the cylinder.

Abstract: A hand-held dispenser for dispensing two fluid components of an adhesive polymer through a nozzle and into openings defined within wall structures so as to provide a high strength hold upon metal anchors subsequently inserted into the openings. The dispenser includes an improved plunger assembly for efficiently expelling the fluids from the respective chambers into the nozzle. The improved plunger assembly includes a compression pad mounted on the end of a piston. The compression pad and piston are enclosed by a dome shaped cap which creates an air chamber in between to exert pressure on the compression pad when dispensing to deform the pad to create a seal between the plunger assembly and the cylinder in which it is housed.

Abstract: A fastening assembly for use in attaching articles to soft materials such as gypsum based and light weight concrete roofing. The assembly includes an anchoring element which has a high thread and an axial bore in one end. The thread has an included angle of less than 45.degree. and terminates in a sharp edge at the free end of the anchoring element. A headed screw is driven into the bore and becomes fixed to the anchoring element. A flange is integrally molded and frangibly connected to the bored end of the anchoring element, and becomes a washer upon breaking away therefrom.

Abstract: A tool for use in dispensing fluids, such a liquid two-part epoxies. The tool has an actuating mechanism which includes a lever which is adjustable to accommodate materials of varying viscosities. Adjustment is achieved by axially moving a bolt within the trigger of the tool, which results in a change in the mechanical advantage thereof.

Abstract: A dispensing device which includes two chambers, one for holding a resin and another for a hardener. Each chamber has an exit port formed in a neck which contains passageways leading to each of the chambers. The neck is equipped with external threads which mate with internal threads on a nozzle adjusting nut. A nozzle, which is carried by the nut can be moved from an open position to a closed position in which a portion of the nozzle's base closes the ports. A divider or tab projects from the neck at a location near and between the ports, and the nozzle has a slot to receive the divider. The divider serves to prevent mixing of the components until well after they exit the ports. The divider/slot arrangement further prevents mixing of the components by preventing relative rotation between the nozzle and the neck. Three separate sealing surfaces are formed on the base of the nozzle. One is cylindrical and seals against an O-ring carried by the neck.

Abstract: A fastening assembly for use in attaching articles to soft materials such as gypsum based and light weight concrete roofing. The assembly includes an anchoring element which has a high thread and an axial bore in one end. The thread has an included angle of less than 45.degree. and terminates in a sharp edge at the free end of the anchoring element. A headed screw is driven into the bore and becomes fixed to the anchoring element. A flange is integrally molded and frangibly connected to the bored end of the anchoring element, and becomes a washer upon breaking away therefrom.

Abstract: A threaded insert for drywall having an externally threaded portion and an unthreaded drilling portion of generally equal lengths. The insert is adapted to be installed in a single step with the use of a hand powered screwdriver. A low profile flange at the upper end spaced a distance from the threads allows the insert to be installed flush with the surface of the drywall. Two embodiments are disclosed, one of molded zinc and the other of plastic material. Both embodiments include a drilling portion which can be deflected laterally upon the insertion of a screw therethrough, allowing the use of a single moderate length screw for attaching articles of various thicknesses. The insert eliminates the need to pre-drill a hole with a separate tool.

Abstract: A fastener and a nosepiece for use in attaching lath to a support. The fastener includes a screw and a spacing element, in which the spacing element is adapted to threadingly penetrate the lath and abut the support. The lath is retained between the spacing element and the head of the screw and is thereby held away from the support in order to allow plaster to properly extrude through openings in the lath. The nosepiece is attachable to a driving tool and has rigid prongs which reach through openings in the lath. Travel of a bit on the driving tool is limited so that automatic disengagement occurs to prevent over-driving of the screw. The prongs ensure that the lath is held a predetermined distance from the support.

Abstract: The invention disclosed shows a device, method and system for installing threaded masonry anchors. A plate is used to control the rate of axial penetration of the anchor into a masonry structure. An opening in the plate allows engagement of the anchor with the plate. Rotation of the plate is prevented by various means. As the anchor advances and forms threads in the structure, the plate may be used to resist axial forces on the anchor in either axial directions thereby precluding stripping of threads formed in the masonry structure.

Abstract: A driver bit attachment for a power tool for preventing over-torquing of the fastener. A driver bit is received in a first bore and a second larger bore of a cylindrical attachment body. A projection permits attachment to a drill or screw gun. The projection has a tapped recess extending axially therein which receives a set screw. The end of the set screw engages the trailing end of the driver bit to position it within the two bores and, thereby, determines the point at which the fastener will disengage itself from drive by pulling itself out of contact with the driver bit.

Abstract: A two piece hole-drilling and fastener-driving assembly consists of a three-sectioned drill bit and a three-sectioned drive collar. The drill bit has a fluted drilling section, a hexagonal driving section and a tapered section adapted to be received in a complementarily shape chuck of a rotary hammer. The drive collar has a first hexagonal portion which mates with the hexagonal drill bit section and is driven thereby. A second tubular portion receives the drilling section when the hexagonal portions are engaged. A third portion includes a fastener-engaging recess. This portion may take the form of a removable socket and the collar provided with a spring-biased ball retainer to hold the socket thereon and a second such retainer to hold the collar on the drill bit. The drill bit is inserted in the rotary hammer chuck and a hole is drilled in the workpiece. The drive collar is then slipped over the drill bit and a self-tapping fastener driven into the just-drilled hole.

Abstract: Apparatus for providing metered lengths of adhesive bearing strips, from a supply roll, to a mechanism for fixing each of the metered strips to a different one of a plurality of stacks of sheets comprises: a pair of rollers providing a nip, and means for rotating one of the rollers to advance adhesive strip engaged by the nip. The axial length of the nip is smaller than the width of the adhesive bearing strip and the strip includes a hole which is larger than the nip, the hole being located near the end of the roll. As a result, when the hole is advanced into the nip by the rollers the rollers stop feeding the adhesive bearing strip to the mechanism.