Fluid pressure means

An assembly for manufacturing wood pallets including a pair of spaced jigs mounted to a table or like supporting frame at a convenient working height. Each jig is constructed and arranged to receive the wood components of the jig, and an upwardly extending center post is mounted on the table between...     

A pneumatically operated nailing machine for driving nails by a main piston operated by compressed air. A nail feeding piston is actuated by compressed air, synchronous with the movement of the main piston. To make the feeding of nails smooth, a device to accelerate evacuation of compressed air from...     

A nail and nail clip arrangement in which so-called common nails may have their shanks grit-blasted and the edge of their heads flattened along equal parallel planes to provide a minor diametral dimension of the nail head that is approximately twice the diameter of the nail shank. The heads are alternately...     

An apparatus for mounting steps on the inner wall surface of a manhole section comprises implanting the steps in the section while the same is still green and following removal of the inner form but before removal of the outer form, positioning each step in confronting relation with the manhole section...     

This invention relates to a roof bolt injection mast comprising an elongate member having a length slightly less than the height from the floor to the roof of a tunnel or gallery in which the mast is to be operated, the elongate member being provided with a passage which extends therethrough from one...     

A pallet size nail having a comparatively small gauge shank whose surface is pitted with contiguous minute pits bounded by small sharply shaped wall convexities as provided by grit blasting the surface with approximately 80 mesh grit of aluminum oxide, which protuberances imbed in wood fibers and provide...     

A pneumatic fastener driving tool in which a piston-driver assembly is moved in opposed working and return strokes within a cylinder. Vent passage means of a predetermined area are provided adjacent the lower end of the cylinder to permit greatly increased velocity on the working stroke. Valve means...     

A gun to drive an interference fastener in a work bore includes a piston and striker, and control means to apply different pneumatic pressure levels to the piston to drive and seat the fastener with employment of first and second power strokes.

An apparatus is described for driving fasteners or for other impacting applications. The apparatus comprises a cylinder, a piston slidably mounted in the cylinder, a hammer connected to the piston, an air reservoir, an air manifold or supply chamber connected to the air reservoir, a quick-acting poppet...     

An air-actuated stapling gun that can be conveniently advanced over a stapling surface for automatic-stapling purposes, and this without the necessity of lifting the gun from such stapling surface preparatory to a subsequent staple set. The subject stapling gun retains the double-safety trigger feature...     

An automatic fastener emplacement mechanism for selectively applying fasteners, such as spring clips, to a work piece is provided. The mechanism preferably includes a vibratory hopper or other storage means for receiving the spring clips in bulk and properly orienting same on a track and an assembly...     

The disclosed hammer comprises a power frame, having a working chamber for the deforming medium, a die block adapted to accommodate therein a blank and an impact head with a housing having fastened therein a hollow separating bush coaxial with the housing. Received concentrically within this bush is...     

A power driven percussion tool is provided with a rotatable magazine block formed with a plurality of bores about the axis of rotation of the magazine block and is loaded with fasteners such as rivets or nails respectively retained in the bores. When the magazine block is stepwise rotated about its axis...     

This invention relates to an improved pneumatic power driving tool for driving staples, nails and other fasteners. The tool is comprised of a pneumatically operated pivoted rectangular hammer which is used as the means for delivering a force to a ram which in turn drives the fastener. The pressure in...     

The invention pertains to a compressed air-operated fastener driver utilizing a piston reciprocally mounted within a cylinder wherein a control valve at one end of the cylinder selectively opens and closes cylinder ports communicating with a compressed air source, and the control valve utilizes an exhaust...     

Continuously connected fastener attachment stock formed by elongated plastic side members with cross coupling links. One of the side member has successively connected cross bars with each cross bar connected to one of the cross links. The other side member has successively connected head pieces with...     

An improved driver is provided wherein a pneumatically operated piston is slidably disposed in a cylinder which is adapted to vent to atmosphere through a port positioned adjacent the end wall of the cylinder. A piston cushion, anchored to the interior surface of the cylinder end wall, is configured...     

A power impacting device includes two driving pistons, an inner piston, and an outer piston concentric with the inner piston. Pressurized fluid is supplied first to the outer piston and then to the inner piston to drive a two-piece fastener through material which it is to fasten together. The fastener...     

A pneumatic stapler includes a housing having an elongated guiding passage for guiding a staple to be struck, a pneumatically operated stapling hammer for striking the staple located in the guiding passage and an elongated hollow staple magazine for connected separate staples. The magazine has a first...     

An improved type of pneumatic tacking tool is disclosed for use in fastening carpet tacking strips and the like to wooden or concrete floors. The tool comprises a modification of the fastener driving tool described in my U.S. Pat. No. 4,040,554 and my U.S. Pat. No. 4,122,904, and is particularly well...     

A nailer for repeatively driving nails one at a time into material. A safety yoke including an integral safety yoke lever cams against a safety yoke pin in the body of the nailer and actuates a secondary trigger pivotally mounted in a trigger. The secondary trigger actuates a valve plunger in a trigger...     

A pneumatic, linear thrust hand tool, such as a nail driver wherein a charge of pressurized gas in a firing chamber acts, when a main valve is opened, to drive a ram downward. The main valve is opened by a higher pressure source gas entering a charging chamber under a piston carried on the valve stem....     

A portable electric fastener driving apparatus includes a unique fastener driving element operatively connected to the piston of an air spring which is charged to provide energy for driving fasteners. The air spring is charged by a unique jacking and release system including a drive gear selectively...     

A pneumatic tool is disclosed for attaching small metal members such as washers and name tags to a workpiece. The tool generally comprises a pneumatic driver apparatus for driving nail-like fasteners and a holder apparatus for holding the metal member positioned before the driver so that the member may...     

A pneumatic driving system for causing a nail or the like to run out of the barrel of a nailing tool to where its point may be seen by the user for lining up with a hole on the work and subsequently driving the nail into the workpiece.

An improved power-driven hammer driver tool is provided wherein a pneumatically- or hydraulically-operated piston mounting a cylindrical rod-shaped hammer is designed to impart a vertically-oriented impact to an indexed fastener within the tool. A face plate is mounted between the driver tool foot portion,...     

A power tool in the form of a fluid pressure cylinder utilizing multiple movable pistons coupled for contemporaneous pressure-responsive working movement, as well as for return to no-load position. Individual pressure buildup on each pressure chamber is controlled by pre-selected imput and exhaust orifice...     

A tool for driving fasteners includes a casing defining a nose portion and a handle portion within which is a reservoir for pressurized fluid. A driver is mounted in the nose portion that is reciprocated by a piston attached thereto and an assembly for returning the piston to a static position after...     

A fastener driving tool including a body having a handle and a head portion. A drive assembly includes a driver blade movable along a drive path defined by a nose assembly located below the head portion. A magazine assembly extends from the nose assembly and includes a frame member fixed relative to...     

The present driver for fasteners such as nails, screws and the like is provided with a separator member operatively located between the ejector channel and a fastener supply magazine. The separator member takes up a fastener arresting position in which the separator member reaches between the shafts...     

A percussion tool, disclosed as a nail driver, having a plunger-like hammer or driver which is driven through working and return strokes by a power piston movable in a cylinder which is pressurized with a working fluid and vented by selective actuation of a unique and simplified valving arrangement to...     

A tool for driving fasteners includes a housing defining a handle portion and a nose portion. A driver is reciprocally mounted within the housing as is an assembly for driving the driver through a fastener driving stroke. A muffler is mounted in the housing adjacent and in fluid communication with the...     

A surgical stapler powered by a relatively low pressure gas supply contained in the stapler. The stapler has a mechanical linkage between the pneumatic actuator and the staple driver with a differential mechanical advantage to match the substantially constant force provided by the pneumatic actuator...     

A pneumatic fastener applying tool featuring a self-cycling control valve with one moving port. A trigger actuated valve sets the cycling valve in motion. The cycling valve alternatively pressurizes and vents the working piston of the fastener tool. A valve stem is positioned by an integral reciprocating...     

Improved forms of pneumatic tools of the type shown in U.S. Pat. Nos. 4,040,554, 4,098,171 and 4,122,904 are provided for driving nail-like fasteners into a workpiece. The tool may be used for attaching small articles such as washers or name tags to the workpiece, in which event the tool may be combined...     

A hydraulic nailing pistol with force or energy-accumulators for reciprocally driving a nail driver (5) formed as a piston with associated piston rod (5). The outer end of the rod is intended for applying to the nail head of the nail to be driven. The piston is arranged in a hydraulic cylinder (26) and...     

A pneumatic gun for forcibly inserting fixing elements, such as nails, metal staples and the like. The gun has an operating piston, carrying an arm for firing the fixing elements. The arm slides in a cylinder open at one extremity towards a compressed air tank provided in the stock of the gun. The operating...     

A fastener applying tool driven by air in a driving stroke and a return stroke featuring noise and recoil reduction and increased efficiency, driving force, and speed of operation. Air directed into the main cylinder to force the main piston through its driving stroke is stored in a chamber to rapidly...     

Multiple pins are affixed in the holes of a ceramic substrate by simultaneously impacting the pins with a piston assembly which temporarily places the pins in a viscoelastic fluid state. Upon return of the pins and the resultant fluid flow to its undisturbed solid state, each pin is left with an extension...     

A jig comprises a housing which contains a storage channel and a feed channel. The feed channel communicates with the storage channel and extends to the front end of the housing. The jig also has a releasable gripping portion located at its front end. The releasable gripping portion grips and releases...     

A nail feed mechanism for use in power operated nailing guns having a strip of nails joined by two lengths of wire at spaced intervals, for feeding the nails from a magazine to a barrel, and having a nail feed channel, a nail feed pawl adjacent to such channel with abutments interengageable with the...     

In a pneumatic nail driver, compressed air drives a working piston in the driving direction within a working cylinder. An inlet valve controls the flow of compressed air into the working cylinder. A sensing element mounted on the front end of the driver moves opposite to the driving direction when it...     

Self-centering fastening tool for quickly and easily fastening wire and paper lath to support members.

An improved nailing machine including a reciprocatable plunger for sequentially severing and driving nails from a nailing strip, and a reciprocatable piston for advancing and retracting the plunger. The machine includes a unique reciprocatable control valve actuating and nail guide means which serves...     

A pot shaped housing insert (6) is arranged in a driving apparatus for fastener elements, such as nails, between a pot shaped main body (2) and the driving cylinder (12). In such a driving apparatus the excess driving energy is taken up by an impact buffer (11) made of elastic material. The housing insert...     

A rivet driver for easily fastening a rivet comprising a male shank and a female tube to separate members has a construction such that the separate members may be united by hydraulically driving the male shank into the female tube to thereby cause the female tube to be radially expanded outwardly and...     

An improved nailing machine having a longitudinally reciprocating nail driving ram and a loose nail feeder means associated therewith, which feeds nails to an alignment chamber positioned in a plane adjacent to the stroke path of the driving ram. The nails are fed into the alignment chamber at an angle...     

An improved animal stunning device is provided which allows the user a quick, easy and cost effective method to kill animals in a slaughterhouse operation. The animal stunner preferably includes a pneumatically activated stunning gun having a trigger assembly provided with a manually operable safety...     

The present invention relates to a pneumatically operable fastener driving tool which uses a safety device which prevents the operation of the tool until it is in engagement with the workpiece. More particularly, the safety mechanism includes a safety nose that is normally retained in a retracted position...     

The present invention relates to a sound-dampened driving apparatus for fasteners wherein a main valve member is arranged above a working cylinder of the apparatus and movable within a cylindrical bore. When the main valve member is in its lower at rest position, the main valve member separates the working...     

A magazine device of an air nailer is disclosed. A support shaft for supporting a coil nail is formed by fitting concentrically a guide post having an outer diameter corresponding to the winding diameter of the coil nail, an adjust post inside the guide post and a tension post inside the adjust post...     

A fastener driving tool includes a housing defining a handle portion and a head portion with a nose portion extending therebelow. Mounted within the head portion is a cylindrical sleeve within which is reciprocally mounted a drive piston. A driver for driving fasteners is secured to the drive piston...     

An improved piston and driver structure includes a synthetic piston body, a bifurcated piston insert and a driver secured within the insert by means of a pin and by means of frictional engagement of the driver by the piston insert when the insert is assembled to the piston body. The piston insert has...     

A semi-automatic hand-held pneumatic gun for installing plastic rivets. The gun includes a handle equipped with a manual trigger, and an associated magazine which serially feeds a plurality of stored rivets. Repetitive semi-automatic cycling of the gun is established by cooperation between a triggered...     

Free standing apparatus adapted for use with a clip clinching tool capable, at high speed, of exerting a pulling force on a clip assembly whereby the clips comprising the assembly are sequentially severed and wrapped on elements of a workpiece, especially overlapping wire members employed in the manufacture...     

In a pneumatic nailer using compressed air for driving nails, a work chamber contains a drive piston and is in communication with a storage chamber for effecting the return of the drive piston after it has driven a nail. A valve unit controls the supply of additional compressed air into the storage chamber....     

A pneumatically operated fastener-driving tool, particularly adapted for nailing drywall to the framing of a building, includes a housing, a reciprocator assembly mounted within the housing, and a piston mechanism mounted within the reciprocating assembly for axially driving the fastener into the drywall...     

A fastener striking apparatus for fasteners, especially for staples, nails, etc., comprising a housing with a plunger to be struck arranged therein, a tool portion arranged at the housing containing a fastener channel with the plunger guided therein during the striking operation, and a magazine for the...     

A fore chamber assembly of a nailing gun serially feeds nails by gravity through a channel into a firing chamber. A nail head fence prevents the heads of trailing nails from underriding the heads of preceding nails and getting more than one nail in the firing chamber. The fence is vertically adjustable...     

A dimpler apparatus for recessing nail heads in drywall panels and simultaneously dimpling the panels in the area of the recessed nail heads to expedite finishing of the panels, which includes a housing, a dimpler guide mounted on one end of the housing, a stationary stop in association with the dimpler...     

A resilient anvil for clinching staples driven through a drive track is adjustably mounted on the stapler to permit compensation for wear and to otherwise control the curl or clinch applied to the driven staple. Overlapping or partially aligned openings in the anvil and a fixed adjusting or locating...     

An actuator assembly for a stunning gun has a trigger valve in addition to a second shiftable nose piece valve. In use, the trigger valve is manually depressed to open and the user then moves the stunner such that the nose piece shifts as the animal is engaged, whereupon the second valve opens. The stunner...     

Disclosed herein is an improved nail driving tool comprising a housing including a reciprocable driver, a driver guide fixedly connected to and extending vertically from the lower end of the housing for slidably receiving the driver therein, a handle secured to and extending laterally outwardly from...     

The present invention relates to a sound-dampened driving apparatus for fasteners wherein a main valve means is arranged above a working cylinder of the apparatus and movable within a cylindrical bore. When the main valve means is in its lower at rest position, the main valve means separates the working...     

A drywall tool provides tactile and audible feedback to the user, as a fastener is driven by frequent multiple blows, to indicate when the fastener is properly driven, and the drywall dimpled, without tearing the paper facing of the drywall. Dimpling apparatus and a firing valve for controlling the multiple...     

A pneumatically operated nailing machine having a reciprocatable blade for driving nails when advanced, and a reciprocatable differential piston unit connected to the blade. The reciprocatable differential piston unit has an upper, small diameter piston and a lower, large diameter piston interconnected...     

An impact nailing and dimpling apparatus is described. In the apparatus there is provided a dimpler and valve assembly for automatically controlling the depth to which nails and dimples are set in a wallboard. A base member is also provided for orientating the apparatus for repeatedly and reliably driving...     

A valve arrangement for a compressed-air operated nailing apparatus with valve pistons operating without intersection in such a manner that the one valve piston cooperates with the working cylinder and is guided by the other working piston which is controlled by an auxiliary control valve, wherein the...     

A hand-held impact tool operated by a pressure medium includes a work cylinder, a piston movable in the work cylinder by the pressure medium, and an impact member. A pressure medium container, preferably a CO.sub.2 -cartridge, is immediately attached to the housing of the tool so that no pressure medium...     

A portable self-piercing riveting system includes a pneumatically driven driver which forces a self-piercing rivet through a workpiece. An anvil carried on a pivotal clamp is moved into operative alignment with the driver on the blind side of the workpiece to receive and set a rivet. The clamp is part...     

A pressure intensifier is automatically driven repeatedly by compressed air from a compressed air source to produce highly compressed air for storage in a pressure chamber. The pressure chamber is selectively connected to or disconnected from a drive cylinder having housed therein a drive piston, under...     

A pin which has a compressive strength less than the tensile strength of a substrate can be fixed into a hole in the substrate when the substrate is held between a stopping block and a clamp by transporting the pin into the hole with sufficient kinetic energy that the pin is forged into a shape defined...     

A hand-held fastening element driving tool comprising a housing with a handle. A barrel holder with a barrel is free to move axially in the housing. The barrel holder has a extension enclosed in the housing and is provided with a cylindrical shoulder. This shoulder acts, through the agency of an elastic...     

A power operated fastening tool which includes a power actuated driver rod and a notched safety and valve slide also includes a simplified circular magazine to feed fasteners one at a time beneath the driver rod. The circular magazine includes a small diameter circular track for holding a plastic collation...     

A pneumatic fastener driving tool includes a return system for efficiently and rapidly returning a drive piston to the static position and effecting a fastener feeding operation. A housing defines a pressure fluid reservoir connected by a pneumatic control system to a first side of a drive piston to...     

A pneumatically operated fastener-driving tool, particularly adapted for nailing drywall to the framing of a building, comprising a housing, a reciprocator assembly mounted within the housing, and a piston mechanism mounted within the reciprocator assembly for axially driving the fastener into the drywall...     

There is disclosed a pneumatic nailing tool operated by a hammer blow or the like substantial force. The tool also carries a feeler which ensures operation of the tool only when the latter is properly positioned on the work-piece to be nailed. The above characteristics constitute two safety features...     

A percussion tool of the repeatedly operating type includes a housing, a striking cylinder received in the housing for movement therealong, and a driving piston received in the striking cylinder for movement therealong. The striking cylinder cooperates with the housing to provide a switch valve means...     

A connector (10) for positioning fasteners (16) in a preformed opening (24) in a wall (12). Tabs (18) formed on the front surface (13) of the wall (12) guide the nail gun (22) and trip a trigger mechanism to cause the fastener (16) to be driven through the wall (12) and into an abutting structural member....     

A driving tool comprising a cylinder, a piston movable axially within the cylinder, a driving element movable conjointly with the piston so as to move through a central aperture of an end wall of the cylinder in a driving stroke and in a return stroke, and a bumper, which arrests movement of the piston...     

A tagging device, such as for ears of livestock, driven by a pressurized fluid source is disclosed. The manually controlled pneumatic applicator described utilizes pressurized air for activation to pierce the ear and set the tag as well as retract the piercing element. The applicator is particularly...     

A surgical stapling instrument is provided which employs a highly pressurized gas as its source of energy. The highly pressurized gas is conducted to means for indicating the presence of the pressurized gas and to a pressure regulator. The pressure regulator controllably develops gas pressurized to a...     

An automatic fastener feeding and driving apparatus is disclosed which includes a vibrating feed hopper, and a fastener feed assembly for receiving the fasteners from the hopper and serially delivering the fasteners to a delivery line which leads to an automatic hand held driver. The fastener feed assembly...     

A stapler wherein the piston which drives home discrete fasteners is received in a cylinder having an open end overlapped by the valving element of a main valve. The valving element is permanently biased to sealing position by a plastic diaphragm spring and is normally held in such position by pressurized...     

Soil nails are placed in the ground by driving a first elongate tubular member into the ground, driving a second member into the ground through a bore defined by the first member such that the second member is guided by the first member into a position in which it forms an extended soil nail, the second...     

A driving mechanism is provided as a means to clamp and implant surgical staples pneumatically. First, one pneumatic line propels a clamping piston to clamp the tissue and to propel a driving piston into position to be fired. Then a second pneumatic line causes the driving piston to propel a driver which...     

A fastener driving device of pneumatic type comprises a piston (20) within a cylinder (49), and a driver (21), connected to the piston (20) and movable through a fastener driving throat (26) formed by the housing of the device. A chamber (52) is provided within the housing to function as an air pressure...     

An improved system for dispensing a fastener through a slotted hollow needle from a continuously connected fastener stock, such apparatus incorporating an actuator slide with a central channel, such actuator slide being secured to the ejector rod and fastener stock feed mechanism to actuate these functions....     

In a method of soil nailing a soil nail is placed in the ground by being fired from a barrel of a launcher, the method including the steps of loading the nail into the barrel with the nail being a loose fit in the barrel, providing the nail with a sabot which is a sliding fit in the barrel, supporting...     

A fastener driving tool such as a pneumatic nailing machine drives a fastener into a workpiece under a fluid pressure supplied into an upper chamber in a cylinder and applied to a piston reciprocally movably disposed in the cylinder. When the fastener being driven is stopped in a power stroke of the...     

A portable power fastening tool for fastening flooring or the like using fastening members such as nails and staples also includes a driver member for the fasteners and a hammer member, both of which are propelled by an air motor to simultaneously compressively strike the flooring during the fastening...     

An automatic fastening machine where strips of covered fasteners (11) are fed from a reel 16 of fasteners into the rear of the fastening machine along a guide means (12) as needed. A fastener advancing means (13) intermittently urges the strip of fasteners toward a drive element (60). The drive element...     

A pneumatic fastener driving tool including a start valve adapted to be open for start a fastener driving operation by pneumatically driving a driving rod forwardly, and a vent hole for connecting to start valve to atmospheric air to let compressed air escape to atmosphere when compressed air is accidentally...     

A pneumatically powered point driver utilizes a valve mechanism having a core that is operated by air conducted therethrough from the supply source. The valve core is preferably provided with an enlarged head, to enhance the rapidity and firmness of the action produced.

An improved compressed air nail machine is disclosed incorporating a plastering device for automatically filling the hole above each nail head after it is placed into the wood. The plastering device adapts to a conventional nail gun and comprises a piston and cylinder pair which utilizes the exhaust...     

A guide for use with a fastener driving tool which positions the fastener driving tool with respect to the workpiece and also controls the degree of penetration of the fastener with respect to the workpiece to allow for contraction and expansion of the workpiece due to temperature changes. The guide...     

A nailing machine having a cylinder housing which houses a cylinder which slidably houses a piston in communication with a source of compressed fluid for moving the piston within the cylinder, and a nail machine body which integrally includes a grip portion. A nail magazine and a nail feeder cooperate...     

A pneumatic fastener driving tool includes a main valve operable to cause compressed air to be alternately introduced into and discharged from the upper piston chamber, a first passage leading the compressed air into the main valve chamber, a repeat valve disposed in the first passage for opening and...     

A method and apparatus for stapling together adjacent bone tissue, such as a severed sternum, includes a staple applying tool adapted to drive each leg of a two-legged staple through a respective portion of the bone tissue. The tool includes a distal shoe having a staple forming anvil, the shoe being...     

A pneumatically operated fastener driving tool having a pivotally mounted magazine. The displacement of the magazine is used to actuate the tool when the nosepiece is in engagement with a workpiece. With the magazine travel kept to a minimum, the magazine is coupled to a cam lever which amplifies the...