Abstract: An attachment for a fork lift truck for opening and closing sliding doors such as railway freight car doors. The attachment includes a floor that can be engaged by the tines of the fork lift and two vertically spaced apart door engaging members mounted to the floor for transverse movement with respect thereto. The floor also mounts an upstanding cage assembly so that a person can work inside a protected area.

Abstract: This invention relates to fork lifts, and has as its object the provision of angular attachable extensions to the forks by means of which the operator can pick up or deposit loads at levels below that of the floor on which the fork lift is operating, as for example, from the ground or from the floor of a pickup truck which may be several feet below the warehouse floor.

Abstract: The disclosure provides for torsionally resilient interconnection structure of two existing bicycles into side-by-side or parallel cooperative relationship, by employing plurality of torsionally resilient connecting members which are bent to form a longer mid-portion and two shorter end portions, with their longer mid-portions positioned substantially horizontally and transversely between the main frame tubes of the two bicycles, and their shorter end portions aligning longitudinally with the correspondingly positioned frame tubes of the two bicycles and operatively attached to them at two spaced-apart points, including novel steering linkage and front wheels tie-rod system allowing the two coupled bicycles to be operated as one four-wheel vehicle and enabling it to carry additional people and cargo.

Abstract: A tool-changing mechanism for machine tools of the kind in which tools can be inserted into a spindle. A tool magazine receives several tools and a double-ended tool-changing arm is provided on each of its two ends with gripping mechanisms. The tool-changing arm is rotatable about an axis of rotation which is parallel to the spindle axis and the tool-changing arm can be moved along the direction of its axis of rotation. The tool-changing arm can also be pivoted, between a working position and a rest position, about a pivot axis which is parallel to its axis of rotation.

Abstract: A backhoe includes a computer capable of automatically controlling the depth or lowermost point of the backhoe bucket. The computer is programmable to provide level operation of the backhoe, will have preset common depths and programmable depths, and further include an automatic empty and return cycle, and to maintain a given level or slope of a desired ditch. Special resistors are positioned at all of the pivot points of the backhoe to act as sensors for relaying information to the computer. The output of the computer controls hydraulic valves which, in turn, operate the outriggers, boom, crowd and bucket of the backhoe assembly.

Abstract: The method of transferring the material between a first and second zone having different atmospheres of a first and second fluid utilizing spaced sealing members and a liner extending between sealing members, said sealing members and liner adapted to be manipulated in a sequence to permit the material to pass from the first zone to the second zone without an admixing of the atmosphere.

Abstract: An air cushion table for transporting layers of laminar material of loose consistency, e.g. layers of fabric, with compressed air lines disposed in the table plate and connectible to a compressed air source, the compressed air lines discharging with upwardly directed exit openings from the surface of the table plate. The compressed air line in the area of the exit opening is in each case provided with an insert made of porous material which occupies the cross-section of the compressed air line.

Abstract: A fork lift truck having a frame provided with widely spaced forward supporting wheel points is directly supported on the ground through a laterally shiftable mast at a third supporting point which shifts with the mast so that increased stability is obtained.

Abstract: A support installation is provided for use with large, cylindrical loads to provide rotational and longitudinal movement therefor. The support includes a plurality of non-driven all-round rolls and at least one driven all-round roll, the principal rotational axes of the non-driven rolls being parallel to the load and the rotational axis of the driven roll being perpendicular thereto. The rolls engage the circumference of the load for rotational and longitudinal movement. A U-shaped bracket fixedly or yieldably supports the rolls.

Abstract: A workpiece transfer apparatus for transferring a workpiece for a machine tool. A first crank arm is rotatably supported and rotatably supports a planet gear engaging with a stationary gear and a driven gear engaging with the planet gear. A second crank arm is secured to the driven gear and fixedly supports a crank pin. A connecting member for lifting and lowering a workpiece grip device is pivotably connected to the crank pin. The crank pin has a cam member secured thereto. An operating member is provided with a cam follower engaging with the cam member and is operatively connected to the workpiece grip device for opening and closing the same in accordance with the shape of the cam member.

Abstract: The invention relates to a hoist for boats. The hoist comprises two booms which are connected at one of their ends by a cross member. The hoist is supported by three wheels which are associated with only one boom and with the cross member, and a counterweight is located in the angle formed by this boom and this cross member. The invention can be used for lowering small pleasure boats into the water.

Abstract: In a power shovel having a main frame, a front end assembly operatively connected to the main frame and a rope crowd system including a rope drum supported on the main frame, a motor supported on the main frame drivingly connected to the rope drum, a brake operatively connected to the rope drum and a rope wound on the drum and operatively connected to the front end assembly, a system for preventing the rope from becoming slack comprising apparatus responsive to an impending slack condition of the rope for actuating the drum brake thereby preventing continued pay out of the rope by the drum and apparatus responsive to motor torque in a pay-out direction for disengaging the motor from the rope drum, allowing the motor to continue to operate in the pay-out direction when said drum brake is actuated.

Abstract: A device for locking a boom to a boom support structure as used in earthworking implements is described. A lug having a camming surface is provided on the boom or on the boom support structure as the case may be. The opposite structure is provided with a pivoted arm joined to a lock pin. Motion of the boom toward the boom support structure engages the lock pin and camming surface. Continued movement boom toward the boom support structure forces the lock pin over the lug. Subsequent movement of the boom away from the boom support structure so as to separate the two is prevented by virtue of the lock pin engaging the back side of the lug. A pull cable actuated by the equipment operator disengages the lock pin from the cam thereby permitting free movement of the boom and boom support structure. A bias spring maintains the pivot arm and lock pin in one position unless the lock pin engages the camming surface of the lug.

Abstract: A programmable automatic assembly system is provided which may be employed to assemble small parts. Each assembly station includes cooperating manipulator arms which are programmable to assemble parts on a centrally located work table. Improved facilities are provided for teaching the manipulator arms at each station, these facilities including a computer which assists the teaching operator in setting up the programs required for assembly of small parts to close tolerances. Each manipulator arm includes closed loop teach facilities for maintaining the arm at a previously located position during the teaching mode of operation. The computer is employed as a teach assist facility in performing a number of tasks during the teaching operation which are extremely difficult for the operator to perform manually. All of the assembly stations may be controlled during playback from a common disc storage facility so that the control circuitry and memory storage facilities at each manipulator are minimized.

Abstract: A parking stand for supporting an implement such as a front end loader when the implement is not in use including an extendable, elongated support leg pivotally secured near its upper end to a portion of the implement, a pin assembly for fixing the support leg in a plurality of extended positions, interlocking connection apparatus for retaining the support leg in its non-operative position and apparatus for limiting the pivotal movement of the elongated support leg.

Abstract: Apparatus for the handling of drill collar and pipe stands and comprised of a hydraulically mechanized "Derrickman" and "Derrick Floor Hand" and associated fingerboard lock bars and all of which are adapted to remote control in the placement of the stands in a derrick, both in alignment with the rotary table and fully placed within the racking fingers, the stand handling mechanism being characterized by articulated arms extensible by actuator apparatus housed entirely within the confines thereof for compactness.

Abstract: A clip is provided for carrying articles and cooperates with system for engaging, disengaging and overlapping it. The clip is constituted by a thin piece of injected, stamped or moulded plastics material which is provided with a triangular opening which is itself open at a narrow slot in the center of the upper side of the clip and which may or may not have bosses to enable a regular spacing to be maintained between a number of clips which are carried by a storage rod before they are engaged onto a transfer or handling system. Such a clip is able to operate effectively with an engaging system which is formed by a dispenser and a member for thrusting the clip towards a system of abutments which thus enable the clip to move from a fixed support to a moving support.

Abstract: A plant for handling cement tiles and similar articles is disclosed which includes a charging station, a roller conveyor for serially moving trays through a first conveying path toward the charging station, two or more switches along the first conveying path within the charging station operable to cyclically stop movement of the trays in steps equal to one of the tray length and a multiple thereof so that the tray sequentially receives two or more stackings of the articles from the charging station.

Abstract: A machine comprising a rotatable telescopic boom assembly includes an outer boom section, an intermediate boom section rotatably mounted within the outer boom section, and an inner boom section located within the intermediate boom section on a telescopic relationship thereto. The inner boom section is adapted to carry an implement such as, for example, an impact hammer, at one end thereof. A mounting is provided to which the outer boom section is rigidly attached. Fluid actuating means are also provided for rotatably driving the intermediate boom section within the outer boom section continuously through 360.degree. in one direction of rotation and for reciprocating the inner boom section within the intermediate boom section.

Abstract: A general purpose assembly machine of linear indexing type comprising a pallet guide for indexing a plurality of pallets, an elevator block making a rise and fall motion, and a pair of tool plates attached to the elevator block and making a linear and reciprocal motion in a direction parallel to or in a direction making a predetermined angle against an indexing direction of the pallets, wherein a plurality of working heads fixed at the tool plates make a combined horizontal and vertical motion thereby transferring parts from and onto the pallets.