Abstract: In a hinge assembly intended for suspension of motor vehicle doors having two hinge halves which can be attached at one of two door installation parts and connected with one another so as to be rotatable by means of a hinge pin, the hinge halves being rotatable with running fit in one hinge half and being arranged secured against axial movement, the two hinge halves are arranged in a position which corresponds to the hung-in position of the vehicle door and they are secured by screw bolts which penetrate the hinge eye of the second hinge half to prevent that the hinge falls apart during a possible automatic loosening from the position of the two hinge halves when the door is hung in due to assembly errors. Screw bolts form the primary safety mechanism of the hinge assembly and a secondary emergency safety device is also provided which is formed by means of interlocking sections or parts of both hinge wings extending over the area of the operating angle of traverse of the hinge assembly.

Abstract: A drilling boom has an articulated arm 12 which carries a drill feed beam 28 on its outer end. Apart from the articulation 36, 38 provided by the joint at the outer end of the arm, the feed beam can rotate about two mutually perpendicular axes at the end of the arm. One of these axes is defined by the so-called rollover unit 44 and the other axis 92 is at right angles to the length of a drill rod on the feed beam and allows at least 180 degrees of rotation so that parallel holes can be drilled in all parts of the roof, floor and side walls of a heading.

Abstract: An electromagnetic pile driver has an elongated guide in which a magnetic core is permitted to fall by gravity to impact against an anvil transmitting the impact energy to the pile. The core is raised by a coil in a ferromagnetic sheath disposed at an upper portion of the guide and an upper anvil can be provided and coupled to the pile when the apparatus is used for withdrawing piling. The coil is energized by the control discharge of a capacitor.

Abstract: In a hammer drill, a striking mechanism supplied percussive force to a tool. The striking mechanism includes a free piston slidably displaceable in a reciprocating manner within a guide cylinder. Balls mounted in the guide cylinder are spring biased into a recess in the free piston for securing the piston in a locked position so that it cannot deliver percussive force to the tool. The balls are spring biased by a ring encircling the cylinder with a spring pressing the ring in the axial direction of the cylinder against the balls.

Abstract: A handle assembly for a cooking container which comprises a handle member connected to the cooking container, the handle member including a hollow coupler adapted to contact the cooking container, a handle having hollow end portion and an insulated connecting member disposed intermediate to the hollow coupler and the handle, one side of the intermediate member being slidably disposed within the hollow coupler, and the other side thereof being slidably disposed within the hollow portion of the handle member and screw means extending through the insulated connecting member and through the hollow coupler for screw engagement with the cooking container.

Abstract: A button orienting and placing apparatus comprises a guide table defining a substantially horizontal first guide channel, and a chute defining a slanting second guide channel communicating at its lower end with one end portion of the first guide channel remotely from a die. Each of the first and second guide channels is composed of a button-head guide passageway for receiving a head of the button, and a claw guide passageway for receiving a pair of claws of the button. The claw guide passageway of the first guide channel has a arcuate lower end portion curved toward the die.

Abstract: A stapler comprised of a base body having an anvil at one end, a staple holder having a slot at one end in the vicinity of an end wall and a staple block consisting of many staples positioned between said wall and a pushing spring, a pushing body having a staple pushing plate at one end for extruding staples one by one through said slot, the other ends of said base body and staple holder being connected by a connecting shaft so that said holder may be positioned between said bodies, the end of the staple holder being detachably connected to the shaft. The base body may also be connected to the pushing body through a resilient connecting part material so as to form a splay mouth, with the return spring being formed integrally on the base body and/or pushing body and a projection provided to contact the top of said integral spring. A guide member may be provided on an upper bottom face of the holder, with the outer face of the guide member constructed to guide a staple block.

Abstract: A manually actuated torque magnifying impact tool in which an annular inertia member surrounds and is directly supported rotationally on a common axis on a ratchet tool head. This construction confines impact stresses to the inertia member and tool head, instead of carrying these stresses through bearings and frame members as in former constructions, which required extra studiness in these members and thus undesirable extra weight in the tool.

Abstract: A pallet assembling apparatus includes a fixture into which the pallet stringers and top and bottom slats are loaded manually, and a nailing station, including opposed pairs of top and bottom nailing guns equal in number to the number of stringers loaded in the fixture, for nailing the top and bottom slats to the top and bottom surfaces of each of the stringers. The fixture is movable along rails past the nailing station, and actuating bosses equal in number to the number of top and bottom slats in the fixture project from the fixture and trip proximity switches as the fixture moves through the nailing station to cause the nailing guns to be fired in unison as each slat passes by them, and a pickup carriage, positioned downstream of the nailing station, removes completed pallets from the fixture.

Abstract: A surfacing and boring machine for reconditioning engine blocks has a front stationary work table, a traveling column on rails provided by an elongated rigid base, a power head unit on the column adjustable in an air float condition to move an overhanging spindle forwardly and rearwardly, and mechanisms in the power head unit to independently move a spindle carrier vertically and to rotate the spindle at selected speeds. Clamping devides are provided to independently clamp the power head unit to the traveling column and the column to the base rails. A quick-change unit is located in the spindle for the tools.

Abstract: A valveless down-the-hole hammer drill is actuated by fluid such as compressed air. The drill includes a piston disposed within a chamber defined within an outer wear sleeve, an air diverter at one end and a suspendably mounted drill bit at the other end, wherein the piston has a slidable contact surface with the chamber towards each end of the piston, such that the piston is slidably reciprocable within the chamber. Porting and exhaust arrangements alternately supply and exhaust live pressure fluid to either end surface of the piston to reciprocate it and cause it to repeatedly strike the drill bit. An intermediate compression chamber is defined between the two sliding contact surfaces of the piston between the piston and the outer wear sleeve. Air trapped in the intermediate chamber is compressed so as to apply a retarding force on the piston towards the end of the return stroke, and to provide additional impetus to the piston on the commencement of the drive stroke.

Abstract: Fastener installation apparatus for operating cylically so as to instal successively a plurality of fasteners of the type in which a portion is broken off at installation (e.g. breakstem blind rivets) comprises a fastener installation head (11) and a pipe (31) for conveying the broken-off portions away from the head to a receptacle (15). Detection device (48) is mounted adjacent the pipe (31) to detect the presence of a broken-off fastener portion at a pre-determined position (58) there along near the receptacle (15). When a portion is thus sensed, an electrical signal is sent by the detection device (48), via a relay (51), to the installation control system (14a, 14b), so as to allow cyclical operation of the system to continue.

Abstract: A portable apparatus is provided with an operating head slidably mounted on a guide plate for successively fastening stirrup-links on the end of a conveyor belt via staples. A movable die within the operating head for clinching the staple ends has a first portion located opposite to the staple-inserting punch and provided with grooves for initial clinching of the staple ends. A second portion of the die is provided with grooves for final clinching of the staple ends of the following stirrup-link which have already been subjected to initial clinching. A second punch penetrates into an opening of the staple-guiding plate in order to arrest the operating head in each predetermined position and to serve as an anvil for bearing against the head of each staple at the time of final clinching. The second punch is actuated by a lever which also actuates the stepping-motion ratchet mechanism while another lever controls the operation of the staple-inserting punch and the operation of the die.

Abstract: Concentric tubes, mounted for relative rotation about their common axis, each include radially extending hinge plates. The tubes carry contra-rotational cam slots through which project the ends of a cross-shaft. Bearings on the ends of the cross-shaft engage the milled cam slots. A cylindrical cross roller bearing block mounting the cross-shaft is axially, slidably positioned within the inner tube and is under a biasing force exerted by a compression spring abutting one end of the block. The cam profiles of the slots includes portions at the ends of the slots extending parallel to the rotational axis to lock the inner and outer tubes together at the beginning and end of the stroke with the cam profile controlling the hinge plate acceleration, deceleration, and velocity, in addition to ensuring positive locking of the hinge in plate open and closed position.

Abstract: A combined pile driver, pile drawer and drilling machine comprises a carriage (1), a turntable (1A) mounted on the carriage (1), support device (2), lifting device (4) and a mast system (5) comprising two mast units (3). The support device (2) comprises a tubular support bearing (9) which is hinged to the turntable (1A) at (6A) and the lifting device (4) comprises two hydraulic cylinder (6) which are hinged to the turntable (1A) at (6B) and to a bearing sleeve (9A) at (6C). The support device (2) further comprises a mast support (10) which surrounds the bearing (9) and extends through the sleeve (9A) and can be rotated about its own axis by means of an hydraulic cylinder (11) and a coupling (11A). Each mast unit (3) is mounted on the mast support (10) by brackets (14) and comprises a guide rail (13), a mast (12) which is slidable on the guide rail (13) by an hydraulic cylinder (15) and a cradle (30) which is movable on the mast (12) by an hydraulic feed cylinder (28).

Abstract: Demolition apparatus which is attached to a movable boom-like member of a machine. The demolition apparatus includes support structure which carries a power plunger and an actuator plunger. The plungers are mounted in adjacent relationship and are movable with respect to the support structure. A compression spring urges the power plunger in a direction from the support structure. The actuator plunger includes a latch device which engages a portion of the power plunger. In operation, the support structure is moved toward a surface to be demolished. The actuator member engages the surface and remains fixed as the support structure continues to move toward the surface. Therefore, as this occurs, there is relative movement between the support structure and the actuator plunger. A latch carried by the actuator plunger engages a part of the power plunger and retains the position of the power plunger with respect to the actuator plunger.

Abstract: A door closing device utilizing the elastic restoring force of a belt-shaped spiral spring to effect the closing of a door which comprises a housing having one portion fixed a door or a door frame; a reel rotatably disposed in the housing; a belt-shaped spiral spring wound on the reel having an end portion extending out from the housing with the end portion fixed to a door frame or a door.

Abstract: An impact device that consists of a housing having a bore, a piston, and a change-over valve for control of the reciprocal movement of the piston is presented in the present invention. In the present invention, it is not necessary to employ a long-size piston and a high piston speed is obtained and, further, a compact device in which the fluctruation of the pressure in the low pressure path is small can be obtained.

Abstract: A portable radial arm machine having two principle components. The machine is easily disassembled and quickly assembled in either a working mode or in a compact portable mode having the characteristics of a piece of luggage so that the machine can be transported easily from location to location and readily placed in operation.

Abstract: A portable stationery device having a punching device disposed in a lower portion of a holder and a stapler disposed in an upper portion of the holder above the punching device. The stapler can be freely drawn out from or retracted into the holder. When the punching device is used to punch a sheet of paper a punching rod of the punching device is pressed by the stapler.