Abstract: A safety mechanism for a nailing machine in which a start valve for a hammering mechanism is driven by cooperative action of operating a trigger lever and moving a contact arm to an uppermost point where it is pressed against a material to be nailed. The hammering mechanism for hammering a nail is supplied to a nose section arranged at a front end portion of a housing and is actuated by the start valve.

Abstract: An improved mechanism for controlling a fastener-driving tool comprises a workpiece-contacting element, a tool-controlling element movable conjointly with the workpiece-contacting element over a limited range, a spool defining having a threaded connection with the workpiece-contacting element and a swivel connection with the tool-controlling element and having axial ribs alternating with axial ribs, and a spool-restraining element movable along a radial line between a spool-restraining position and a spool-releasing position and biased toward the spool-restraining position. The spool-restraining member is arranged to restrain the spool against rotating at the swivel and threaded connections by projecting into any given one of the grooves, between the fibs nearest to the given one of the grooves, when the workpiece-contacting element is moved inwardly from an outer portion of the limited range but not when the workpiece-contacting element is within the outer portion of the limited range.

Abstract: A pneumatic nailing machine having a, driving depth controlling mechanism. The pneumatic nailing machine includes a push lever having a lower end in pressure contact with a workpiece and another end in association with a trigger. Vertical moving length of the push lever relative to a nose will change the driving depth. An eccentric body is rotatably supported on the main body. The eccentric body is positioned above the upper tip of the push lever and the upper position of the upper tip of the push lever is regulated by the eccentric body. If the eccentric body is angularly rotated to a first angular position, the push lever can be moved to its highest position for providing a minimum distance between the lower tip of the push lever and a lower tip of the nose to provide the maximum driving depth. If the eccentric body is angularly rotated to a second angular position, the distance between these tips become maximum to provide a minimum driving depth.

Abstract: A nailing machine includes a body, a driver extending downwardly from the body and vertically reciprocally movable for driving nails, and a driver guide for guiding the driver. A contact arm is movable between a lower first position and an upper second position and has a lower end for abutment on a work. A magazine is mounted on the body for feeding the nails into the driver guide. A trigger is operable by an operator for driving the driver. A trigger control device is interlocked between the trigger and the contact arm for permitting the driver to be driven by the operation of the trigger only when the contact arm is positioned in the upper second position. An idle driving prevention device is operable independently of the trigger control device for preventing the driver from being driven through operation of the trigger when the amount of the nails has been reduced to a predetermined amount.

Abstract: An adjusting and positioning mechanism for nailing guns includes a safety rod with a threaded section, an adjusting block having an annular slot in one end thereof for accommodating a spring, a sleeve having a flange at one end thereof and a hole for receiving the safety rod, and a safety plate provided with shoulder portions at one end thereof. The flange of the sleeve is provided with a plurality of projections for fitting into corresponding grooves radially distributed in an end surface of the adjusting block to prevent the adjusting block from turning caused by the shock generated during the nail driving operation so as to ensure the stability of the safety rod.

Abstract: A nailing depth adjusting mechanism for a pneumatic nail gun is described. The mechanism includes a firing control strip fastened to the gun body which releases the firing pin of the pneumatic nail gun. The firing control strip has two parallel lugs and a toothed adjusting wheel disposed between the lugs. The wheel has a longitudinal axially internally threaded hole and holes are provided in the lugs. A safety bar is provided having a threaded rod at one end. The rod is inserted through the lugs and threadedly received in the hole in the adjusting wheel. The end extending from the wheel is received in a socket which, in turn, is received in a hole through one lug. A compression spring is provided between the adjusting wheel and the opposite lug. Rotation of the wheel then displaces the threaded rod within the mechanism and, in turn, moves the safety bar.

Abstract: In a fastener-driving tool, which may be a pneumatically powered or combustion-powered pin-driving or nail-driving tool, and which comprises a nosepiece and is adapted to drive a fastener from the nosepiece, through a workpiece, into a substrate, a workpiece-contacting probe comprising two permanent magnets is mounted to the nosepiece for magnetically and releasably holding a washer plate made of magnetizable steel between the nosepiece and a workpiece. Thus, a fastener driven from the nosepiece is driven through a washer plate held by the workpiece-contacting probe, through a workpiece, into a substrate. The workpiece-contacting probe adapts the fastener-driving tool particularly but not exclusively for fastening metal lath to concrete walls, concrete blocks, or other building substrates.

Abstract: An adjustable depth control for use with a fastener driving tool having an upper arm, a coupling, and a lower arm. The upper arm is rigidly attached within the coupling, while the lower arm is threaded into the other end of the coupling. The bottom of the coupling contains a cam surface which is biased by a spring against a mating cam surface on a retainer which holds the lower arm within the guide body, and prevents the coupling from rotating. The coupling is moved out of contact with the retainer and rotated to change the position of the lower arm with respect to the nose piece of the tool.

Abstract: A chuck device for driving nails into boards includes a nail-driving mechanism and a staging mechanism for positioning the nails to be driven by the nail-driving mechanism. A driving mechanism drives both the nail-driving mechanism and the staging mechanism for positioning the nails. A countersink control mechanism positioned between the staging mechanism and the driving mechanism provides the capability for selectively changing and fixing a distance between the staging mechanism and the driving mechanisms and a distance between the staging mechanism and the nail-driving mechanism.

Abstract: A fluid pressure operated nailer in which the fixed nosepiece of the portable housing has an inner portion defining an inner drive track section extending from the fluid pressure chamber in the housing and an outer portion defining an interior guiding recess. A workpiece engaging member defining an outer drive track section is mounted within the interior guiding recess and extends outwardly of the outer end of the fixed nosepiece for movement between an extended workpiece engaging position and a retracted operating position. The inner and outer drive track sections are open laterally to the nail feed track so that a forwardmost nail can be fed from the feed track into the drive track sections. The workpiece engaging member is spring biased into its inoperative position so as to provide positive control of the nail with respect to the driving element during the entire drive stroke including recoil movement of the portable housing.

Abstract: In a fastener-driving tool comprising a housing structure defining an axis and a nosepiece extending from the housing structure, a primary actuating structure is movable between a tool-disabling position and a tool-enabling position, and a secondary actuating structure is coactive with the primary actuating structure for moving the primary actuating structure to the tool-enabling position when the secondary actuating structure is pressed firmly against a workpiece. The primary actuating structure is biased to the tool-disabling position by a primary spring or springs. The secondary actuating structure is biased away from the primary actuating structure by secondary springs. When the secondary actuating structure is pressed firmly against a workpiece, the primary spring or springs exhibit a biasing force less than the biasing force exhibited by the secondary springs. The secondary actuating structure may also be biased away from the housing structure by a tertiary spring.

Abstract: In a fastener-driving tool, a primary structure, an intermediate structure, and a secondary structure are separately movable along a tool axis. The primary structure is biased to a tool-disabling position, is movable along the tool axis to a tool-enabling position, and is engaged by an upper end of the intermediate structure. The secondary structure has a lower end to be firmly pressed against a workpiece. A bolt is threadedly adjustable within an axial socket of the intermediate structure. A spring disposed around the bolt shank, between the bolt head and a flange on the secondary structure, biases the intermediate structure in one direction. The bolt head has flat surfaces, one of which is engaged by a tab on another flange of the secondary structure so as to prevent bolt rotation unless the secondary structure is moved against the spring bias, whereupon the bolt can then be rotated.

Abstract: A fastener driving tool includes a driver guide within which a driver is reciprocally moved to drive the fasteners, a contact arm vertically movable along the driver guide and having a lower end for abutment on a work, a control mechanism interlocked with the contact arm for controlling operation of the driver. A mechanism for adjusting driving depth of the fasteners includes a cam device interposed between an upper part and a lower part of the contact arm. The lower part has the lower end for abutting on the work. The cam device is operable by an operator for varying distance between the upper part and the lower part of the contact arm.

Abstract: A powered stapler mechanism with a pivotal head mounted in a housing comprised of an upper portion and a lower portion including a lower floor and upstand structure to which the mechanism is anchored. The pivotal head is raised by cam means during the stapler cycle and the housing portions are lockable together using an axle and a slide lock.

Abstract: A hand held nailing device for use in starting, driving, and setting nails is composed of a hollow cylindrical barrel having a stepped diameter longitudinal bore. An abutment shoulder is formed by the intersection of first and second diameter portions of the longitudinal bore. A stepped diameter cylindrical ram is slidably received within the barrel. An annular stop face is formed by the intersection of a first smaller diameter portion and a second layer diameter portion of the cylindrical ram. A spring ball detent is utilized to retain a nail in the barrel by engaging the nail head. By striking the end of the ram, the nail will be driven into the desired location on a work surface until the stop face on the ram contacts the abutment shoulder within the barrel. By appropriately dimensioning the barrel and the ram, the device may be adapted for use with a variety of different sized nails.

Abstract: A guide assembly mounted on a fastener driving tool locates the tool a predetermined distance from the edge of hardboard siding or a similar workpiece and assures that a fastener is driven into the workpiece the correct distance. The tool includes a housing having a nose defining a drive track and a driver blade for driving fasteners along the drive track into the workpiece. A safety member moves relative to the housing between a workpiece responsive position extending beyond the nose and an operating position, and a spring urges the safety member toward the workpiece responsive position. The guide assembly includes a yoke with a central portion adjustably mounted to the safety for controlling fastener penetration. A pair of laterally extending arms carry edge guides to locate the tool spaced from the workpiece edge in either of two different tool orientations. The edge guides are retractable so that one may be retracted when the other is used, or so that both may be retracted if neither is used.

Abstract: A tool for installing valve stems in the rims for tubeless tires from the outside of the rim. The tool includes a cylindrical barrel having a tip for insertion in the opening in the rim, the interior walls of the barrel converging toward the tip end. The barrel is removably affixed to an actuating mechanism including a push rod adapted to be advanced and retracted within the barrel. The forward end of the push rod has an internally threaded fitting for mating with the threaded end of conventional tubeless tire valve stems. The actuating mechanism may be operated to incrementally advance the push rod, and thereby a valve stem affixed thereto, along the converging barrel to eject the valve stem through the barrel tip and seat it within the opening in the rim. An indicia may be provided on the push rod for visually indicating the axial position of the valve stem.

Abstract: A framing tool is disclosed for applying fasteners to the interior perimeter of a frame to mount a picture or the like. The framing tool includes a conventional fastener applying instrument that includes a driving means for propelling a fastener into the frame and a storage means for storing a plurality of fasteners and delivering the fasteners to the actuator means. An actuator assembly is provided for both positioning and triggering the fastener applying instrument. The actuator assembly includes a rod that communicates with the driving means and is slideably coupled to a sleeve. A backing plate is selectively secured to the sleeve by a clamping arrangement to engage the exterior perimeter of the frame and position the driving means. A trigger is provided that moves the rod relative to the sleeve in order to actuate the driving means.

Abstract: A method and apparatus for manufacturing wooden pallets including a vertically-reciprocating nailing head for nailing deckboards to stringers and a limit switch arrangement for adjusting the stroke length of the nailing head individually for each deckboard, so that in each deckboard, all of the nails will be driven to a uniform vertical position. A gripper carriage effects horizontal movement of pallets at various stages of completion. Hydraulic drive means are provided for both the nailing head and the gripper carriage.

Abstract: A low-electric-current-demand stapler is disclosed. The stapler has a frame upon which is mounted a fastener driver mechanism including a fastener driving blade and drive unit, a blade drive-control unit including spaced-apart frame pieces mounted on the frame, a rotary driven wheel mounted on the drive-control unit, and an electric motor powered transmission apparatus for transmitting the rotary motion of the motor to the driven wheel.

Abstract: An anchor bolt installation tool for installing anchor bolts in preformed holes in concrete, masonry and other materials. The anchor bolt installation tool includes a body piece adapted to interengage with a power impact hammer at one end. The exterior of the body piece is preferably threaded to adjustably receive a guide piece thereon. The body piece is further provided with a bolt receptacle for receiving the threaded end of an anchor bolt. The guide piece is adjusted relative to the body piece so that the guide piece contacts the surface of the concrete or other structure thereby determining the depth to which the anchor bolt is driven. Locking means are preferably provided to fix the relative position between the guide piece and body piece to maintain the depth adjustment at a fixed position. A plurality of inserts can also be provided so that various sizes and types of anchor bolts can be used.

Abstract: A sheetrock hammer attachment used in conjunction with a pneumatic hammer operator having a rear body portion and a forward body portion, the forward body portion comprising a threaded bore having its forward end surrounded by a smooth outer sleeve and the rear body portion having an operating switch which activates the vibrating action of the hammer; comprising a hardened steel hammer having a rounded forward head and an elongated shaft extending rearwardly therefrom, the elongated shaft being received in the bore and being operationally connected thereto, a central portion of the head is drilled away to receive a non-magnetic insert containing a smaller cylindrical magnet, the magnet being provided to hold the head of a nail, a plexiglass shield covering the front end of said sleeve and extending forwardly therefrom, a tension spring rotatably affixed to the rear portion of the shield and being wound about the rear portion of the sleeve, and a rotatable nut threadedly connected to the bore adjacent the rear

Abstract: A stapler apparatus having a member for limiting the angular relationship between a fixed base member and the pivotal magazine therefor. The limiting member includes a stepped stop member positionable between the base member and magazine, and is formed so that different angular relationships may be obtained. For each angular relationship, the bending of preformed staple legs is controlled so as to permit the use of the same size of staples for a few sheets in a set of sheets being stapled.

Abstract: With a solenoid actuated tacker the setting of the penetration depth of the fastening elements is effected by adjusting the operating stroke of the armature with respect to the solenoid coil actuating the armature. To accomplish this there is preferably provided an armature stop displaceable in the direction of movement of the armature. The stop is preferably supported and moved by a cam-like element adjustably rotatable about an axis at right angles to the movement of the armature. In this way the drive-in depth of the fastening elements can simply and readily be adjusted.

Abstract: A machine for driving a pin into a hole in a work piece. The pins are fed by gravity in a continuous succession from a pin supply to a passage extending through a pin receiving rotor. With a pin in the rotor, the rotor is turned through a selected angle to bring the pin and the passage through the rotor into alignment with a pin driving punch. Upon actuation of the punch, the pin is driven from the rotor into a passage in an adjacent aligned sliding pin guide. Movement of the pin through the pin guide temporarily ceases when the pin encounters a resilient stop. Continued movement of the punch then moves the pin guide and the pin therein until the nose of the pin guide engages the work piece. The punch, continuing to move through the passage in the now stationary pin guide, drives the pin past the resilient stop and into the aligned hole in the work piece. Upon withdrawal of the punch, the pin guide aided by a spring returns to it original position adjacent the rotor.

Abstract: An operator-tended machine, e.g., a machine for applying snap fasteners, rivets or the like to workpieces, has an upper tool which moves against a lower tool acting as an anvil for it. A fingerguard moves ahead of the upper tool to protect the fingers of an operator. A workpiece support, with reference to which the prescribed safety distance of the fingerguard is calculated, can move downwardly and yield to the upper tool against a biasing force.

Abstract: A manual tool suitable for driving nails into concrete or the like comprises an axially extended tube and a ram mounted for reciprocal movement therein, the ram having a handle at one end thereof. The diameter of the ram along its length is substantially less than that of the bore of the tube. The end of the ram remote from the handle is provided with a low friction means to space the ram from the walls of the tube. Typically the low friction spacing means comprises a plurality of ball bearings located respectively in a plurality of recesses formed in the radial surface of the ram.

Abstract: A pin chuck press having means for adjusting the rest position of the pin inserting means up or down with respect to a work piece supporting base so that the inserting means will be able to place pins in the cooperating holes in work pieces of different vertical dimensions.

Abstract: A tool is disclosed which has a variable tool stroke useful for inserting a wire conductor into and along a conductor terminating slot of an electrical terminal of the type disclosed in U.S. Pat. No. 4,141,618.

Abstract: The invention refers to a nail press, which can be used either mounted in a work bench or as a portable hand tool. It mainly consists of a U-shaped yoke, which at one of its ends carries a hydraulic press tool incorporating a piston having a movable press plate and which at its other end carries an adjustable shaft with a second movable press plate. Nail plates are intended to be fitted on the press plates.

Abstract: A device for limiting the travel of an arbor press when pressing inserts into a panel. Two insert halves are pressed into a panel from opposite sides by means of an upper and lower anvil. The press movement is stopped by the device when a specified gap between the insert head and the exterior surface of the panel is obtained, compensating for any variations in the panel thickness.