Reciprocating to reciprocating

An automatic hydraulic hammer including a frame with suitable mountings to attach the frame to an existing hydraulic feed test boring drill machine. A weighted hammer is reciprocal within the frame through a measured distance and is arranged for substantially frictionless operation. A hydraulic cylinder...     

An actuator has force amplifying means coupled between piston and piston rod. The force amplifying means may be a mechanical linkage, a system of screw threads, or a hydraulic arrangement utilizing differential piston areas and may lock the piston rod at one or both stroke extremities. The mechanical...     

A device for position stabilization of a take-off and landing platform for aircraft, which comprises a forcibly-guided parallelogram linkage adapted to be rotatably mounted on a mobile carrier, a take-off and landing platform rigidly connected with and parallel to the upper parallelogram part, and an...     

A cable cylinder device comprises a substantially elongated housing having opposite end walls at the opposite ends of its length and a plurality of elongated side walls extending along its length between the end walls. A thrust roller in the housing has a support plate and first roller means rotatably...     

A linkage for pulling a valve stem against resistance of a compression spring comprises three link members; a first link member coaxially fixed to and extending from the stem, a second member pivoted at an end to the extending end of the first member and a third link member pivoted at an end to the second...     

A transmission device has input and output members interconnected by two transmission members. One of the transmission members has only Restricted movement in either direction, and relative movement between the transmission members is necessary for movement of the output member. A pair of brakes are...     

A device for regulating the delivery per revolution of an internal combustion fuel injection pump comprises a pusher movable by a governor responsive to the engine speed, a sleeve connected to a control rod for adjusting the pump delivery and means operatively coupling the pusher and the sleeve. The...     

A gate motion mechanism for continuously driving an arm to perform a gate motion, or a combination of two or more differently directed rectilineal motions, has a cam groove or grooves of a contour corresponding to the path of motion the arm is to follow, and a guide roller or rollers integrally connected...     

In a wedge actuator the inner end face of one tappet which co-operates with the wedge member is made normal to the axis of movement of that tappet, and the line of action of the wedge member is inclined to the plane of that end face.

A fluid pressure brake unit with a fluid piston actuated wedge that moves a brake push rod in a direction perpendicular to the piston stroke has provided therein a forked wedge astraddle the push rod that engages on opposed wedge surfaces respectively two rollers placed on opposite sides of the push...     

Mechanical brake of the pad and disc type having sure braking action, low internal friction and rapid release characteristics, and comprising a control cable responsive, movable rigid member having a directionally sloped shoulder, and follower structure having traveling tangential engagement with the...     

A brake assembly is disclosed in which a first pivoted lever receives and transmits brake actuating force to a second pivoted lever via tapered rollers. As the first lever is pivoted, a force is transmitted from a point which moves along the first lever to a point which moves along the length of the...     

A pushrod-to-bellcrank attachment includes a primary pivot connection and two secondary pin and slot connections so arranged relative to each other that there is a continuing operative connection of the pushrod to the bellcrank in the event the primary connection is lost by small arms fire. When the...     

A drive for a filament guide wherein reciprocatory motion of a first member is transferred to the filament guide via a gear mechanism to give a predetermined amplification factor.

An operating rod comprising a foot pedal assembly is carried on a first movable body and is maintained in vertical axial alignment with a control means grounded to a second movable body. The operating rod maintains operative association with the control means regardless of divergent movement between...     

An actuator for reciprocating stem control valves having a linkage system affording variable force, reversible action, and adaptability to different valve strokes.

In a wedge-type vehicle brake actuator with a cage assembly unattached to the wedge member the travel of the cage assembly is limited by an engagement with one follower member. With an assymetric cage assembly the assembly of the cage assembly into the housing is prevented by an engagement with a follower...     

In a stock-piercing punch mechanism which includes a base having a punch-receiving bore, a punch having a stock-piercing tip positioned for reciprocal movement in said bore, and a cam trigger pivotably mounted on said base which is adapted to receive a stock-piercing force from a press ram or the like...     

An actuator for a valve in which valve opening and closing is effected via a rectilinearly movable member having, at one end, a driving device and, at its other end, a return-movement arrangement. To-and fro movement of the member under the control of the driving device and return-movement arrangement...     

A control in which an active member is momentarily actuated by a moving member only when both members move toward each other and pass each other, the active member being actuated by the moving member as it passes said active member from one direction only, when said members meet and pass in the opposite...     

Apparatus having fuel combustion cylinders for urging the rods of pistons operating therein through power strokes, and fluid pressure pistons, also operating in cooperating cylinders, which are correspondingly urged during said power strokes through movement causing the production of a pressure fluid...     

A tree shear apparatus includes first and second blades, and linkage means interconnecting the blades so that the first blade makes a partial, relatively small cut of the tree and withdrawal from the tree while the second blade cuts through the tree so that the first and second blades together make a...     

An actuator unit for door locks or similar output devices includes two spaced linear actuators selectively operative respectively to lock or unlock the door through a common pivotally mounted link assembly. Such link assembly includes a lost motion connection to permit the energized actuator normally...     

A vuilleumier-cycle refrigeration system of the type including first and second communicating, sealed, cylindrical, vessels having first and second displacers respectively mounted therein in sliding, sealing contact with the inner walls thereof, includes magnetic linkage between the two displacers for...     

Caliper brake assembly using a cam structure to actuate brake shoes to permit selection of a wide range of braking forces and to increase design flexiblity. The assembly has a frame journalling a pair of opposed arms with opposed brake shoes hinged adjacent opposed inner ends of the arms to brake a disc...     

A linkage includes a pair of links pivotally connected together near adjacent ends. The opposite end of one of the links pivots about an axis, moving the opposite end of the other link along a linear path. The position of the axis is adjusted along a linear path substantially parallel to the linear path...     

A resetting device coupled to a thermostat which has a resetting pin actuated by depressing the same, comprises a body arranged to be movable towards and away from the resetting pin; a propelling device for launching the body in the direction of the resetting pin for depressing the resetting pin by the...     

A simple and compact disk brake mechanism which includes a housing having a pair of slightly separated flat guide walls, a plate-like brake member in the housing which is slideable against the disk brake, and a plate-like camming member slideable in the housing and moveable transverse to the braking...     

In accordance with the present invention a brake rigging for applying the brakes to the wheels in a railway car includes a top rod extending over the inner axle which engages a gear located between the inner axle and the truck bolster. The gear includes a first inclined, vertically extending gear lever...     

A lever mechanism including a lever which is pivotally mounted between its ends on a pivot shaft forming two lever arms. One of the lever arms is arranged to receive a force applied thereto and the other of the lever arms has an end portion arranged to transmit movement and force to a working element....     

A control apparatus is disclosed for regulating the movement of a control stem which is biased in a given direction. The apparatus comprises a housing forming a chamber and a plurality of passages. The chamber receives the control stem in its direction of bias, the latter abutting against a restraining...     

The track brake is intended to limit the speed of rolling motion of a freight car according to the track gradient in a marshalling yard. A retarder installed along a braking rail comprises a number of braking tappets each having a portion which projects above the braking rail in the rest position and...     

Screen printing apparatus incorporating drive means for a squeegee comprising a drive motor, a lead screw rotatable by the motor and a rider for the lead screw, said rider being coupled to a mounting for the squeegee preferably through stroke adjustment means and the lead screw having two oppositely...     

A mechanism for translating motion in a first direction to an output motion in a direction normal to the first direction, the mechanism having a generally bar-shaped member with a second generally bar-shaped member slidably coupled thereto with an interconnecting pressure plate member operable toward...     

A load moving apparatus in which a linear actuator is used to move a load through an arrangement of cables and pulleys, so that the load is moved through a distance and at a speed which is a multiple of the distance of movement of the linear actuator.

Servo boosters for vehicle hydraulic braking systems are described which incorporate a novel arrangement for providing an increasing reaction force on the input member in response to an increasing output force. In the novel arrangement a first thrust assembly is interposed between the input member and...     

A machine with a central strut, which strut has a center portion first and second end portion, two pairs of flexible bows, each pair comprised of two bows under flexed stress and having first and second ends. The bows are flexed in an arc such that said first and second ends of the bows extend at 90.degree....     

There is disclosed a testing system employing a circulating tool, a cushion valve, a seal unit packer with a foot sleeve, and a landing nipple with a transducer fitting. This system permits running a packer with a foot sleeve and transducer fitting and landing it in the well, and subsequently running...     

A three-bale load is accumulated on the trailer as bales issue from the rear of the baler, whereupon the accumulated bales may be dumped all at the same location or singly as may be desired. Successive bales issuing from the baler arrive at a central platform from which they are alternately distributed...     

The mechanical amplifier has a wedge-shaped primary member. The primary member is displaceable between two pairs of rollers which are arranged in mirrorimage with respect to a plane of symmetry. All rollers are arranged with their axes parallel, are freely movable, and lie against the wedge-shaped primary...     

A brake applying device for an internal cylinder having pistons operated to apply the brakes by one or both of hydraulic pressure or a wedge assembly that move transversely of the wheel cylinder. The wedge assembly has a wedge and rollers which act between the wedge and the pistons to facilitate movement...     

A screen drive assembly is described for use with screen printing presses for facilitating the printing of elongated articles. In the printing press of the subject invention, the screen is driven towards and away from the press over the article to be printed by a unique drive which converts the reciprocal...     

A linear drive-shaft sealing apparatus particularly useful in removing crystals from a melt solution of an evacuated chamber, which sealing apparatus comprises a first input drive shaft and a second output drive shaft, both shafts adapted for linear movement, a cylindrical element disposed between the...     

Apparatus is shown for use in loading contacts in contact receiving bores of a resilient insert body. The insert body is provided with internal shoulders and bores forming restrictive passages for holding the contacts and for holding wires attached to the contacts. The apparatus includes an adapter associated...     

A reel bar guides for a paper reeling machine include a pair of track-mounted spaced apart carriages on which the reel bar end bearings are respectively mounted, and a looped cable system interconnecting each end of each carriage with the other carriage, including guide pulleys to maintain the cable...     

An apparatus (10) for processing trees includes a hollow boom structure (12), a processing head (14) mounted for movement along the boom and an actuating cylinder assembly (38) which is mounted inside the boom structure. The cylinder includes a body member (50) and support means (52) engageable with...     

An improved pump jack assembly for reciprocating a sucker rod in a well bore is disclosed. The pump jack assembly includes a walking beam pivotally mounted for free swinging motion on a Sampson post. The walking beam includes a fixed counterweight mounted on one end and a horsehead mounted on the opposite...     

An actuator operable to serve concurrently or selectively as a rotary actuator and/or as a linear motion actuator is provided, which comprises a piston-cylinder unit (20, 21), a pair of substantially parallel output shafts (22, 22) having axes substantially perpendicular to the central axis of the cylinder...     

A proportional linear output system in which a second link mechanism consisting of a link and a slider is coupled to a portion of a link of a first link mechanism consisting of a link and a slider, so that the individual link mechanisms describe geometrically similar figures, and in which an input displacement...     

A grain bin stirring apparatus with a horizontal support member for radially reciprocating down augers, said support member rotating in an arcuate path around the bin wherein the center-most reciprocating auger travels twice as far radially as the other augers through a cable and pulley arrangement....     

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...     

There is disclosed herein a mechanical motion control mechanism which in one form may comprise an input shaft drivingly connected to an output shaft in such a manner that continuous rotation of the input shaft produces varying rotational movement of the output shaft characterized by an initial dwell...     

An expansion element comprises a plurality of identical hook or spiral shaped members which are interleaved such that when one of the members is caused to move radially outward it cooperates with adjacent members to move them outward also. The outward movement may be initiated by a centrally located...     

A fluid pressure actuated brake unit has a push rod (3) axially movable in a housing (1) and a piston (2) with a wedge element (7) axially movable substantially perpendicular thereto. A wedge surface (12) on the wedge element is arranged to transmit a force from the piston to the push rod via a working...     

This invention relates to internal combustion engines, the energy output of which is produced as hydraulic pressure, and in one embodiment comprises two, two-cycle internal combustion engines which face each other, the piston rods of each of which are axially aligned and are linked to both of the axially...     

A conveyor is disclosed for labelling apparatus. The conveyor comprises a plurality of clamps and endless carrier for the clamps. Each clamp is urged to a closed position by a spring and is adapted to be held in an open position for receiving an unlabelled folder. Means closes each clamp to grip sheet...     

In a force amplifier, supporting members extend between a pressure plate and a countersupport plate. At each plate the supporting members bear against end bolts and intermediate the plates the support members bear against joint bolts. A spreader bolt extends through the countersupport plate and has a...     

A brake assembly wherein a reciprocable wedge actuator projects into an actuator housing containing two oppositely slidable brake shoe associated plungers disposed in aligned bores having a common axis and a fluid pressure motor unit has a tubular support by which it is mounted on the housing with the...     

A gas piston driven hydraulic piston pump in which the gas cycle is of high efficiency by injecting the gas in slugs at the beginning of each power stroke. The hydraulic piston (40) is disposed to operate inside the gas piston (30), and the two pistons, both slidably but non-rotatably mounted, are coupled...     

A mechanical clamping device, especially for clamping with high force of workpieces and tools, provided with clamping elements, characterized by an axial movable and helical rotatable conical wall (11,21), against which rest similar bodies of revolution (12,22), which are positioned on a changeable concentric...     

A brake booster of stroke-enlarging type which includes a power piston disposed in a casing for being actuated by a difference in pressure on opposite sides thereof, a control piston, having therein a control valve for controlling the difference in pressure, being coaxially fitted into a central bore...     

A high pressure gate valve apparatus provides an elongated cylindrical valve body providing a fluid conveying linear cylindrical longitudinal bore of substantially uniform configuration. A gate valving member is movable within the valve body entirely within the confines of the valve body and not projecting...     

A linear motion mechanism in which a series of pivotally connected links are connected between a support and a controlled member such that as one of the links is swung in a 360.degree. arc, the controlled member alternately moves in a first direction along a linear path of motion and then in the opposite...     

A device for tensioning the endless drive belt for vehicle accessories. An L-shaped housing is mounted in a fixed position adjacent the drive belt. A stub shaft is slidably mounted on the housing and has an idler pulley rotatably mounted on an extended end of the shaft. A pair of cam plates having mutually...     

A pumping unit for actuating a linear reciprocable pump rod comprises a frame having a pair of spaced apart vertical guides for guiding vertical reciprocating movement of a traveling pulley assembly connected to a linear extensible hydraulic cylinder mounted on the frame directly under the pulley assembly....     

A mechanical linkage particularly useful in weighing systems for constraining the motion of a reference member to be along a reference axis.

Lever mechanism with progressive transmission for increasing the force in presses and the like consisting of a retaining plate fastened to the ram of the machine, a movable mechanism component connected with the retaining plate and a support plate for a stationary mechanism component, comprising a lever...     

A holding mechanism for holding a workpiece in position during an operation being performed by an operating device (7) passing along the workpiece includes a toggle linkage (1, 2, 3), a projecting member (9) attached to the device, and a cam track (2) connected to one part of the toggle linkage, the...     

Hoist mechanism for a truck vehicle of the type having a pivotally movable load support frame. Opposed piston hydraulic cylinders are carried by the load support frame. Each of the hydraulic cylinders has a piston rod to which is attached a rotatable sheave. Another sheave is rotatably attched to the...     

A vehicle brake unit having a fluid pressure operated piston arranged perpendicular to a brake push rod on which is provided a pair of diagonally opposed roller members. An actuator member is connected to the piston and is interposed between the piston and push rod to translate the force of the piston...     

An improved emergency and service brake actuator for a wedge type brake is of the type which includes a tubular structure extending from the brake and housing an extended end of a stem of the wedge of the brake therein. An emergency brake actuation portion is mounted on the tubular structure and includes...     

The invention relates to belt cylinders, i.e. piston rodless operating cylinders in which steel belts, in particular, are used in transferring force; even during production, belts of this kind have the negative property of not being sufficiently straight, instead they are bow shaped and this leads to...     

A forming apparatus for cutting and forming tubing, which apparatus has a tubing-advancing drive unit associated therewith for engaging the tubing and intermittently feeding it into the apparatus, and a coil stand positioned adjacent the apparatus for permitting elongate flexible tubing to be intermittently...     

A stroke enlarging mechanism comprises a stationary rack, a saddle member driven by an actuator relative to the stationary rack, an operating arm movable relative to the saddle member, and a movable rack secured to the operating arm. A first pinion and a second pinion are rotatably mounted in the saddle...     

A control linkage is disclosed for a vehicle such that the vehicle's transmission can be connected to a shift lever located in an isolated cab structure. Movement of the shift lever will obtain corresponding shifting of gear ratios within the transmission. The control linkage permits such shifting while...     

A brake power servo booster, in which a fluid pressure difference is generated between opposite sides of a power piston, is provided with a wedge shaped member which is forced by the power piston between the wedge shaped recess of the members of an output shaft. When the wedge shaped member is forced...     

The novel slave pump having a piston rod having a fluid passage through which catalyst is discharged for ultimate use. The slave pump also has an exterior casing which holds it together without contacting the catalyst or other fluids being pumped. A novel combination of a slave pump as just described...     

A variable speed ratio system for the controlled dispensing of a plurality of non-compressible fluids at high pressure, principally for use in reaction injection molding processes. Each of the pistons in two or more displacement cylinders that contain the fluids to be mixed is connected via a rack gear...     

A wedge actuated drum brake assembly uses a wedge-shaped actuating rod and a roller cage slidably mounted thereon to transmit actuating forces from a fluid pressure actuator to a pair of friction elements. The actuating rod and roller cage are provided with a compression spring between the rod and the...     

A high pressure gate valve apparatus provides an elongated cylindrical valve body providing a fluid conveying linear cylindrical longitudinal bore of substantially uniform configuration. A gate valving member is movable within the valve body entirely within the confines of the valve body and not projecting...     

A compact unitary device provides a mechanically amplified rectilinear translational output force in response to a translational input force. The device includes a housing, a slide block, a ram and anti-friction elements disposed intermediate the operatively coupled elements to reduce friction therebetween...     

For a long dual mixer nacelle housing a fan-jet engine powering aircraft, a pair of concentric sleeves sandwiching the cascades to effectuate thrust reversal are synchronously deployed axially to communicate the fan discharge air in the duct with ambient through the cascades. A rack and gear connection...     

Slidably mounted blocks with toothed wheels supporting arms of various radial extension provide variable travel distances for the gripper bar when moving in the transfer direction.

A transfer device for an industrial robot includes two members, preferably having tubular shapes, the first member being extendable and/or retractable over a certain distance and a second member, preferably telescopically coupled to the first member, which is extendable and/or retractable over substantially...     

An adjusting means for a microscope objection (51a) or the like is provided comprising a fixed support (53), a piezomotor (52) having an output ram (54) capable of accurate incremental movement and which is adapted to strike a flexible leg or lever (55) which amplifies the incremental ram movement. The...     

A roll mill stand comprising a main roll mounted in bearings encompassed by pads, and an auxiliary roll with a strip passed between the rolls. The pads and the auxiliary roll are movable on guides provided on the housing. The stand further includes a mechanism to control the profile and shape of the...     

A wedge mechanism particularly adapted for expanding brakes of motor vehicles including a housing, a wedge member, a pair of push rods displaceably supported in the housing action upon the brake shoes of the brake by opposing displacement in a common perpendicular direction, rollers arranged between...     

A reciprocating linear drive for conveyors and like applications including a pair of cars mounted for translation on associated tracks. A reversible motor is coupled by a drive chain to the drive car for translating the drive car selectively in either direction through a defined drive stroke. An endless...     

A wedge assembly particularly adapted for expanding brakes of motor vehicles including a housing and at least a pair of push rods movably supported in the housing and operatively connected to brake shoes of the brake, the push rods having confronting oppositely inclined faces comprising a wedge member...     

A power transmission apparatus includes a housing to which input and output shafts are journalled. The input shaft is rotated by a motor or prime mover to thereby drive a cardioidal-shaped cam. The cam reciprocates a drive rod which has a first end slidably and pivotally connected to one end portion...     

A quick-acting clamping device for clamping tools or workpieces in machine tools comprises a piston which is slidable transversely to the clamping direction and which acts on a toggle mechanism which in turn moves a clamping piece. A pressure plate upon which the toggle mechanism acts is displaceable...     

The present invention pertains to a continuously variable gear device for converting a rotary motion into a linear motion which is dependent on the angle of rotation. The gear device comprises a swivel arm which is rotatable about a fulcrum and is attached to a guide structure on the input and output...     

A linear drive has a pneumatic or hydraulic actuator cylinder, whose piston rod is fixed in place and whose moving, axially guided cylinder forms a supporting and driving part of a stroke ratio changing transmission for transmitting the relative motion between the cylinder and its axial guide to a linearly...     

A document reading device comprising a document stand having a document placing surface and an optical reading means for optically reading the surface of a document placed on the document placing surface. The device further comprises a guide member defining a guide passage extending in a direction toward...     

A gas bearing air slide assembly includes a slide ram movable within a relatively stationary housing. The slide ram and housing have a plurality of mated planar slide surfaces. Pressurized air is supplied between the mated slide surfaces of the slide ram and housing to create a hydrostatic bearing separating...     

Diaphragm type control valve comprising an inert material coated and profiled diaphragm motivated against a shaped valve orifice by a mechanical amplifying mechanism following the command signal of an external controlling device and wherein the combination--profiled diaphragm and shaped valve orifice--is...     

A boring head of a multiple-operation machine tool comprises a housing which accommodates a carriage carrying a mandrel for a cutting tool, and having a slanted surface to interact with a slanted surface of a rod arranged in the housing coaxially with the carriage and kinematically coupled to a drive...     

An expansible mandrel for use in driving or withdrawing tubular piles has lengthwise sections which are subjected to expanding forces in a plurality of zones spaced lengthwise of the interior of the mandrel to establish their pile-gripping relationship. The pile-entering relationship of the sections...     

A precision linear motion adjuster comprises a body with a primary motion member having a screw-threaded portion in threaded engagement therewith, the primary motion member having a thrust-imparting spigot coaxial with the threaded portion, an output member slidable in said body and an intermediate lever...     

Disclosed is an automatic brake adjustment assembly (50) for maintaining a desired disengaged clearance (c) between a frictional brake lining (17) and a moveable object to be braked. Assembly (50) includes a cam member (2) that is moved in opposite axial directions upon the respective engagement and...