Abstract: Disclosed is a fluid powered linear slide employing either a rodless or rod-type cylinder. The slide includes a base which has a movable carriage mounted thereon which moves reciprocably in response to pressurized fluid being fed to the cylinder. In the embodiment employing a rod-type cylinder, a pair of tubular rods are mounted on the base in a fixed position and attached to a piston stationarily mounted inside the cylinder which is movably mounted and attached to the carriage. In the other embodiment, the carriage is mounted on a bracket which is attached to the rodless cylinder carried in the housing for the cylinder. The base has linear guideways therein, each guideway carrying one or more stop membes which are manually adjustable and electrically actuated.

Abstract: Disclosed is a piston-stroke adjusting mechanism of a hydraulic tool comprising an oil tank, a ram for causing the forced feed of an oil, and a piston permitted to slide by the pressure of a working fluid. The piston is formed with a through bore into which an adjust pin is slidably inserted in a manner that an end thereof is directed toward the bottom of a cylinder. The piston is rotatably mounted with an adapter at its head section. The adapter has a small-diameter portion at one side thereof which is located in the through bore to be connected to the adjust pin.

Abstract: A lubrication pump includes a piston and cylinder pump assembly comprising a piston arranged for reciprocation within and relative to a cylinder and having a charging stroke and a discharging stroke, a motor drivingly connected to the piston and cylinder assembly and a priming means including a priming handle coupled to the piston and cylinder assembly. In order to reduce the risk of damage to the pump or parts of a downstream lubricant distribution system through excessively forceful use of a priming handle and to provide a visual indication of the operation of the pump, a resilient member is provided in the coupling between the priming handle and the assembly such that movement of the priming handle to move the piston relative to the cylinder through the discharging stroke can take place without corresponding movement of the piston relative to the cylinder by deformation of the resilient member.

Abstract: An apparatus for readjusting first and second adjustable pressure relief poppet valves to vent the fluid pressure moving a piston when the piston is at the ends of a second work stroke which is of a length less than a first work stroke for which the poppet valves are adjusted. Each of the poppet valves is carried by the piston and includes a valve seat and a valve member movable relative to the valve seat. The piston is disposed in a fluid chamber defined by a housing. The piston divides the fluid chamber into first and second chamber portions. One of the chamber portions is pressurized and the other is vented to move the piston in a work stroke. The apparatus includes a member supported by the housing for moving the seat of the second poppet valve outwardly relative to the piston in response to the member moving relative to the housing and engaging the seat of the first poppet valve to move the seat of the first poppet valve inwardly relative to the piston.

Abstract: A control linkage for varying the length of stroke of a hydraulic cylinder is disclosed wherein a slide member is telescopically received within a bracket member, one of these members being connected to the extension end of the hydraulic cylinder while the other member is connected to the base end. A limiting mechanism in the form of a series of holes in one of the members alignable with a slotted opening in the other member and a fastener positionable within one of said holes and also through the slotted opening serves to limit the amount of telescopic movement of the slide member from the bracket member. As a result, the extension of the hydraulic cylinder can be selectively varied according to the preset length of the control linkage. An alternative embodiment in which a fastener is positionable within the holes externally of the slotted opening provides a two way stroke limiter by restricting the length of the retraction stroke of the hydraulic cylinder.

Abstract: An oil pump for use in a chain saw in which the pumping plunger is constituted by a needle roller and in which gear cam portions which are formed separately from the needle roller are fitted and connected to the needle roller.

Abstract: The invention relates to a fluid power actuator with a cylinder barrel containing a piston and having end caps through one of which the piston rod extends. The end caps have tie rod openings for the tie rods clamping the end caps together onto the ends of the cylinder barrel. Instead of being used for a tie rod, one of the tie rod openings has a guide rod running through it parallel to the piston rod. The guide rod is joined to the piston rod and moves with it to prevent the piston rod from turning in operation of the actuator. Part of the guide rod is within the opening during the full stroke of the piston.

Abstract: A pneumatic and hydraulic cylinder includes a precision adjustment mechanism for precise adjustment of piston rod extended position. The rod is slidable within a sleeve, which is screw threaded or otherwise adjustably mounted to the cylinder. The sleeve includes a stop for the piston, adjustably establishing the extended position.

Abstract: An integral gas compressor-prime mover utilizes the prime mover power shaft (18) to drive a crank plate (20). The plate (20) includes a plurality of securing sites (40) among which a crank pin (24) is selectably securable for changing the stroke length of the reciprocating compressor piston (56). A crosshead connector asembly (32) is provided to linearize the motion of the crank pin (24).

Abstract: A pneumatically operating device comprising a cylinder in which a piston can reciprocate by varying the pressure on at least one side of the piston, which piston is connected on the working side with a projecting pin passed (in gastight manner) through the working end of the cylinder, while on the side opposite the working side the piston is connected with a projecting pin passed (in gastight manner) through an end of the cylinder opposite the working end, the projecting end extending by a given length through a hole of a setting ring and having, on the side of this ring remote from the cylinder, a stop exceeding the dimensions of the hole in said setting ring, the setting ring being displaceable in the direction of length of the cylinder.

Abstract: A positive displacement piston pump includes a cylinder having a working end, an inlet port, an outlet port and a working chamber bounded by the outlet port and the working end; a piston rotatably and reciprocably movable in the cylinder between a retracted position and an extended position, the piston including a free end having a recessed section alternately in fluid communication with the inlet port and the outlet port; a drive motor rotatably and reciprocably driving the piston in the cylinder; a yoke and ball and socket joint pivotally connecting the piston to the drive motor; a base having an upper surface with an elongated slot below the pivot point of the piston and an arcuate slot adjacent the opposite end of the cylinder; and first and second pivot pins secured to a swivel plate which is, in turn, secured to the cylinder through a vertical column, whereby the recessed section is positioned entirely in the working chamber when the piston is at the end of its pressure stroke, regardless of the angle b

Abstract: A high resolution servo actuator is responsive to an electronic control or manual control. An output shaft having fast response and infinite positioning for stroking a manual servo valve on a pump is rotated by hydraulic power. A set of hydraulic working cylinders and centering cylinders are connected through a rack and pinion drive to a shaft. Centering cylinders utilize stop tubes to prevent its pistons from traveling past the center position and applying a constant force to center the shaft. A directional valve controls the flow of hydraulic fluid to the working cylinders for driving the shaft throughout its range of travel. An electrohydraulic servo valve converts the electronic control signal into hydraulic flow to the actuator. Shaft position feedback is developed and connected to the electronic control.

Abstract: A cylinder stop or collar includes a pair of identical mating cam members. Each cam member has a body and a pair of ramps which define cam surfaces. The ramps have slots for receiving attaching means such as bolts. Each cam member also has a slot so that it may be slid on and off the rod of a cylinder without disconnecting the cylinder.

Abstract: An air cylinder including a piston adapted to be stopped freely in any position as desired includes an automatic restoring type air cylinder member and a hydraulic cylinder member. The piston is formed with a hydraulic cylinder chamber having fitted therein a hydraulic fixed piston of the hydraulic cylinder member so that the piston can move freely in a cylinder body. An oil chamber defined by the end of the hydraulic fixed piston and the end of the hydraulic cylinder chamber is communicated with an oil tank via an oil passage mounting a check valve that can be opened by pressing means including a pilot piston and other parts.

Abstract: A fire-safe valve actuator which cooperates with a bolted bonnet type valve to define a bolt chamber with an exterior shroud supporting the actuator housing and providing a substantially imperfect barrier to prevent an external fire from coming into direct contact with the bolts or studs and nuts that connect the bonnet to the valve body. The bolt chamber may also be filled with an insulation material. The actuator may have a return spring connected to the actuator stem through a bearing so that the winding and unwinding of the spring does not result in any substantial torque being applied to the actuator stem. Similarly, any diaphragm in the actuator can be connected to the actuator stem by a bearing so that rotation of the stem will not impart torque to the diaphragm.

Abstract: A single-acting operating cylinder assembly includes a cylinder and piston of rectangular cross section and a spring arrangement for initially forcing the piston into one operating position. The piston has an axial recess with transverse end walls. A stop block is located within the recess and securable to the cylinder for movement of the piston with respect to the stop block. The spring arrangement is formed by a plurality of side-by-side lying helical compression springs supported between the stop block and the recess end wall opposite the stop block. In one embodiment, the stop block is positioned with respect to the cylinder by an eccentric disk adjustable for adjusting both end positions of the piston in the same direction while retaining a constant piston stroke. In a second embodiment, fixed pins and an adjustable disk connect a modified stop block with the cylinder for adjustability of the length of the piston stroke with one of the piston end positions held constant.

Abstract: The vacuum casing of vacuum brake boosters is conventionally made of sheet steel. The vacuum casing is subjected to pneumatic and mechanical forces absorbed by the casing parts. Accordingly, the casing parts must be suitably strong, which results in added costs and added weight. To eliminate these and other disadvantages, there is disclosed a vacuum brake booster comprising at least two bolts extending through the vacuum casing parallel to the master cylinder push rod connected to the end walls of the casing and through at least one movable wall in the casing. The movable wall is slidably disposed on the bolts by means of slide seats.

Abstract: Apparatus for metering material and transferring it from one location is provided. The new metering apparatus has several advantages over that disclosed in my U.S. Pat. No. 4,118,799. The apparatus includes a pair of cylinders with rams which are reciprocated in opposite directions by gear racks connected thereto and driven by a common pinion. A plurality of pairs of the cylinders and rams can be mounted on a common frame or base to meter a number of different materials. Also, the rams, with or without the cylinders, can be readily replaced with components of different diameters to provide different metered quantities of materials. In addition, mechanism are provided for changing the stroke lengths of one or more pair of rams when two or more pairs are employed.

Abstract: In a material handling machine having a turret, a boom supported by the turret for movement about a first pivot, and a piston-cylinder unit for pivoting the boom about the first pivot, the piston-cylinder unit being supported by the turret for pivotal movement about a second pivot parallel to the first pivot, the improvement comprising at least one of the aforesaid pivots being journalled for rotation in the bore of an eccentric sleeve member which is in turn journalled for adjustable rotation in the turret. Rotation of the eccentric sleeve produces a change in the distance between the first and second pivots, with an accompanying variation in the speed-power relationship of boom movement.

Abstract: A volume-adjusting mechanism for a filling machine adapted to fill a number of containers with a predetermined amount of a product from a corresponding number of filling units; to enable a volume adjustment while the machine is running, the part of the filling unit normally connected with a relatively fixed part of the filling machine includes a selectively adjustable lost motion volume-adjusting mechanism to permit adjustment of the suction and discharge stroke of the filling unit.

Abstract: In an acceleration pump of a carburetor for an internal combustion engine including a cylinder and a piston reciprocatorily inserted in the cylinder, the piston is formed in its upper portion with a transverse bore for a stopper member to extend therethrough to be urged by a heat sensitive element to move in a direction at right angles to the direction of reciprocatory movement of the piston, so that additional fuel for acceleration can be supplied to the engine in a quantity which is accurately corrected to accommodate itself to changes in ambient temperature, by means of the heat sensitive element. The transverse bore is formed at its top wall and bottom wall with projections, and the stopper member is formed at its upper surface and lower surface with depressed portions, so as to enable the lengths of the downward and upward strokes of the piston to be controlled in accordance with changes in ambient temperature.

Abstract: A fluid pressure actuated piston is slidably carried in a fluid pressure actuated cylinder which, in turn, is slidably carried in a fixed carrier. Forward axial movement of the cylinder is restricted by a hydraulic pressure balance condition which is created by reducing the rearward surface area of the cylinder. The cylinder is maintained in a pressure balanced condition during the entire operation of the piston assembly. After the piston moves axially forward a predetermined distance, it engages the cylinder and urges the cyliner axially forward the same distance traveled by the piston. The piston's maximum axial movement is thereby extended by the distance the cylinder travels. The output force of the piston is substantially unaffected by the force imposed on the cylinder. Also, the cylinder does not provide any work force area.

Abstract: Apparatus for moving newly formed glass containers from a cooling dead plate to a moving machine conveyor in which the ware is engaged by a finger, with the finger being generally horizontal and engageable with the container at a point on its sidewall which best suits the moving of the container by a sliding motion. The finger, or fingers in the case of plural containers being simultaneously moved, is moved through an arc approximately 90.degree. with respect to its vertical axis, moving the containers from the dead plate to the conveyor and then the finger is retracted out of contact with the containers on the conveyor. After retraction, the finger-mounting mechanism which takes the form of a generally horizontally disposed cylinder is moved back through 90.degree. to a position opposite the position of a dead plate where the finger is then again moved outward and rotated about the axis of the cylinder mounting. In this fashion the containers are moved onto the conveyor.

Abstract: In a reciprocating pump, notably a metering pump, of the reciprocating type in which the pumping member, diaphragm or piston, is actuated by means of a slide block responsive to a rotating eccentric member, a ball is interposed between an adjustment screw controlling the length of the slide block stroke and the slide block. For this purpose, the ball engages an inclined surface formed in a hollow of the slide block. Preferably, the screw is magnetized and constantly attracts the ball to avoid movements of the ball in relation to the slide block and therefore any premature wear and tear of these members. The inclined surface may have a shape matching that of the ball.

Abstract: A rocker wheel jack is arranged on a compact frame so that the driving mechanism is placed below the rocker wheel. The mechanism is adjustable so as to vary the spacing between it and a drive wheel. The rocker wheel is adjustably spaced from the drive wheel. A pitman connects the drive wheel and the rocker wheel. The pitman connections to the wheels are further adjustable radially to the wheels. Thus a jack is provided with a possibility of multiplicity of adjustments and a minimum of vertical space and of weight for the jack. The complete unit is readily movable. The driving mechanism is readily accessible for repair or replacement. An oil level sensor is provided in the well with connections transmitting its output to the R.P.M. of the jack.

Abstract: An improved piston and rod assembly that can be readily disassembled at several places so that the entire assembly need not be necessarily removed from an engine during servicing, and which includes dismantleable bearings around a cross pin about which the piston is pivotally supported on the piston rod, and a dismantleable bearing that supports the piston rod on a crankshaft, and shims being placable behind the bearing blocks so to selectively change a length of piston stroke within a cylinder.

Abstract: A fuel injection pumping apparatus includes a first valve means for supplying fuel under pressure to one end of a piston the displacement of which effects fuel flow to the engine at a substantially unrestricted rate, and a second valve means which when opened allows fluid to flow at a restricted rate by virtue of an orifice, to the cylinder containing the aforesaid piston whereby the fuel flow to the engine is at a restricted rate.

Abstract: A stop mechanism for a bending press, plate shear or the like machine, provided with a work-table and with a work-piece stop which is horizontally adjustable along the work table thereby defining the position of the work-piece relative to the machinery, the work-piece stop being coupled with a position control-unit which is provided with an indicator of the momentary position of the work-piece stop and can be programmed with the desired position, the stop being displaceable by means of a hydraulic piston-cylinder unit and a pump drive means controlled by the position control-unit.

Abstract: A pump and pump system employs electromagnetic actuation during discrete, periodic time periods, imparting rapid strokes covering small distances. Each stroke is delineated by stop members at least one of which is of wedge-like form and is controllably shifted to vary the stroke.

Abstract: A governor or similar feed control device for association with a gas feed, foot control pedal and including a frame means for engaging the foot pedal and being secured thereto, and a foot member adjustably depending from the foot pedal a variable distance to contact the floorboard of the vehicle and curtail depression of the gas feed pedal.

Abstract: An injector for delivering fuel to a combustion engine in which the pump chamber of each fuel pump has a volume adjustable by control means, is provided with a displacer body which is connected to an armature of an electromagnet. The stroke of the displacer body is limited by an adjustable stop and should be influenced as less as possible by wear due to stopping a considerable mass of the armature every time. In order to expose the injector less to wear the displacer body is coupled with the armature through an elastic coupling.

Abstract: A three position fluid powered actuator including a cylinder having a first end, a second end and an intermediate plate, the first end and intermediate plate having coaxial openings therein, a piston reciprocally positioned within the cylinder between the second end and the intermediate plate, a piston rod affixed to the cylinder and sealably and slidably received in the opening in said first end. The piston rod has a reduced diameter portion between said cylinder first end and the intermediate plate. Positioned on the reduced diameter portion of the piston rod is a pair of spring followers each abutting against the shoulder formed at each end of the intermediate portion and between the followers is a compressed spring. When fluid pressure is applied to the cylinder to either side of the piston, the piston is moved, compressing the spring. When the fluid pressure is removed, the spring returns the piston to the intermediate position.