Abstract: A power adjustment for a piston-type powder actuated fastener driving tool wherein a tube is slidably disposed in the barrel of the tool, the tube containing the driving piston of the tool. The tube has a radially inwardly extending flange at its breech end which engages a radially outwardly extending surface on the piston. Means for moving the tube axially of the barrel are provided so that the distance between the flange and firing chamber can be varied whereby the gas expansion chamber between the firing chamber and the rear face of the piston can be varied thereby varying the power with which the piston is driven.

Abstract: An improved indirect-acting powder-actuated fastening tool is provided wherein the power level may be continuously varied and wherein the tool may be discharged only if the muzzle is pressed against the work surface, with the tool substantially perpendicular thereto. A barrel and a barrel breech are adjustably screwed together and telescopically carried by a slide assembly which, in turn, is telescopically carried by the tool receiver. The slide assembly and the barrel are operably connected for corotation, whereby rotation of the slide assembly produces a joint axial displacement, of the barrel and the slide assembly, relative to the barrel breech, to vary the initial volume.

Abstract: The piston return mechanism for a powder actuated piston-type fastener driving tool utilizes a tilting muzzle bushing to engage the fastener driving face of the piston. After the piston has been driven, the muzzle bushing is displaced manually forwardly, by means of a slide, until the muzzle bushing tilts to a position where it can contact the fastener driving face of the piston. The muzzle bushing is then returned breechwardly, pushing the piston in front of it back into the barrel bore to a driving position. When the driving position of the piston is reached, the muzzle bushing cams out of the tilted position into a position where it is coaxial with the piston.

Abstract: A anti-detonation safety device for use in a bulk handling system transporting explosive powder. The device comprises spaced inlet and outlet members and, disposed therebetween, a plurality of interconnected planar panels defining a cruciform chamber, the wings of which each include a top panel, operable in response to an increase of the pressure in the chamber, to provide for venting the same.

Abstract: A powder-actuated tool is provided with a barrel assembly having two parallel, communicating bores and a piston comprised of joined, offset portions, with one of said portions being adapted to slide in one bore while another portion is sliding in the other bore, whereby it is possible to provide a relatively short tool, capable of setting long fasteners, with continuous centering, of the fasteners, during their displacement.

Abstract: A buffer assembly for use in a piston-type powder-actuated tool, which buffer assembly provides for a longer useful life of the piston. The buffer assembly includes an elastomeric member which is disposed in the bore of the tool barrel, and which is fitted with a metallic cap. The tool barrel and metallic cap combine to control and constrain radial and longitudinal expansion of the elastomeric member, when the latter is impacted by the driven piston. In this manner, extrusion of the elastomeric member is prevented and, at the same time, the piston is prevented from contacting other hardened tool surfaces.

Abstract: This mounting assembly is particularly adapted for mounting telescopic sights on pistols. The mount base is secured to the pistol at its breechward end by a screw which is threaded into a tapped hole in the pistol, which tapped hole is conventionally formed at the factory and is standard on pistols. The muzzleward end of the mount base is secured to the pistol barrel or pistol frame by means of a clamp. A screw is threaded into the clamp and tightens the clamp against the mount base. The mount base is provided with opposed surfaces which are forced against complementary surfaces on the clamp to tighten the clamp about the barrel or frame of the pistol when the clamp is tightened against the base.

Abstract: A coal-burning boiler wherein primary air is admitted in the boiler front, below the grate, and secondary air is admitted in the rear of the boiler, below a box-like baffle member. The baffle member is disposed parallel to the grate and divides the boiler into upper and lower chambers communicating adjacent the boiler front, whereby the streams of primary and secondary air merge to flow over both the lower and upper surfaces of the baffle prior to exiting the boiler by way of a stack at the rear thereof. Secondary combustion thus occurs along the lower or under surface of the baffle member. The baffle is subdivided by parallel, longitudinally extending members so as to define a single, continuous fluid flow channel, whereby water may be efficiently heated by passage therethrough. The boiler is formed of upper and lower halves bolted together along mating peripheral flanges.

Abstract: An improved, self-closing propellant charge package adapted for use with a gravity-operated loading device for a powder-actuated tool, comprises a tubular body having one end at least partially closed, the other end being open, and having a portion, adjacent to the open end, which is integrally formed with a plurality of deformable, charge-retaining nodes which are adapted for reformation between a first, undeformed condition, wherein passage of charges is prevented, and a second, deformed, condition admitting of ready passage of charges. The package is adapted for telescoping emplacement on a projecting tubular loading port insert on the loading device, whereby the nodes are displaced, allowing the charges to pass into the insert and, thence, into the loading device.

Abstract: A guidance and retention member, for use with a nail-like fastener of the type adapted to be driven by a powder-actuated tool, comprising an axially elongate, hollow, cylindrical body adapted for telescopic retention on the nose of the fastener and of an even number of flexible, radially extending fins, wherein alternating ones of the fins are of substantially greater radial extent than the fins adjacent thereto. The shorter fins, although nominally of the same thickness as the longer ones, are more rigid by virtue of their lower length-to-thickness ratio and act to limit pre-firing eccentricity of the fastener relative to the tool.

Abstract: An improved means of attaching a fore stock to a break action firearm provides for convenient adjustment to compensate for dimensional variations caused by wear, or occuring during manufacture of the various firearm components, and allows the user to adjust the tightness of the action. The stock is screwed to a wedge member riding on a cammed lug carried by the firearm barrel, such that tightening of the screw causes the stock to be cammed against the receiver hinge.

Abstract: A fastener loading device for a powder-actuated fastening tool comprises a ram-equipped, tubular fastener retaining member hingedly carried on legs secured to the tool receiver and forming therewith a four bar linkage, whereby the retaining member may be displaced from a first position, atop or alongside the receiver, to a second position, in communication with the barrel bore, whereat the retaining member ram may conveniently be utilized to insert the fastener into the barrel.

Abstract: A driver assembly for reliably driving relatively small-diameter washered and nonwashered fasteners from an indirect-acting powder-actuated tool comprises an adapter, carried on the muzzle end of the tool barrel and having a bore wherein is operatively disposed an adapter piston adapted for cooperation with the tool piston. The adapter bore comprises two portions: a first portion, of a size to slidingly admit the shank of the tool piston, and a second portion, having a diameter of a size to guide and support the fastener during driving thereof. The adapter piston includes a head slidingly fitted in the first adapter bore portion and a shank so fitted in the second bore portion. The adapter piston is preferably spaced apart from the tool piston when both are in the driving position, whereby tool recoil is reduced.

Abstract: A method for manufacturing laminated skis wherein the molds in which the skis are built are vacuum wrapped with a plastic film prior to the placement of the ski components in the molds. The adhesive-coated ski components are then placed in the vacuum-wrapped molds in proper fashion. The mold-component assembly is then placed in a press when the ski is formed under pressure and heated so as to set the adhesive. The ski is then stripped off of the mold, the plastic wrap adhering to the ski and leaving behind a clean mold. The plastic wrap is then removed from the ski.

Abstract: The venting of fouled combustion gases from the bore of a piston-type powder actuated fastening tool is provided by forming a gas vent which defines a gas flow path extending through the piston pawl return mechanism mounting to the atmosphere. A gas chamber is provided within the pawl mounting which chamber is vented to the atmosphere. A series of baffles is disposed within the pawl mounting in the gas path to provide for cooling of the hot combustion gases.

Abstract: A fastener driving apparatus having a barrel provided with a fastening element guide which is pivotally mounted about an axis orthogonal to the barrel axis in order to introduce a fastening element therein.The fastening element guide is pivotally mounted on a support secured to the barrel, and there is provided a sleeve operative to engage the guide and pivot the same, said sleeve being moveably carried on the support for translation along the barrel axis in such manner that a relative sliding movement between the sleeve and support, causes the engagement of the sleeve and the guide for pivoting of the latter.

Abstract: .Iadd.An improved power-actuated tool having means for preventing firing if the tool is not properly aligned with the work surface. The tool housing member includes a slidably mounted firing mechanism having cocking means extending forwardly into engagement with a sensing means mounted in the barrel member for relative axial movement therewith. A first member is attached to the barrel member. A second member is mounted within the first member for relative axial movement therewith and with respect to the barrel member, and includes a portion adapted to engage the sensing means. The second member must be moved rearwardly with respect to the first member whereby the sensing means is moved rearwardly with respect to the barrel member and engages the cocking means to move the firing mechanism into the cocked position. The tool may also include an extractor mechanism mounted on the breech end of the barrel and provided with a lip portion adapted to engage the head of a cartridge positioned in the cartridge chamber.