Abstract: A lift mechanism for implements such as tool bar frames used with field cultivators and chisel plows includes means for eliminating torsional loading on the axle support and react vehicle loads through a three bar mechanism back to the frame. All structural members carrying loads are therefore stressed in compression or tension.

Abstract: A seat backrest having an adjustable lumbar support is provided wherein the cam surface of a rotatable cam of a regulating mechanism, which adjusts the lumbar support, is effectively utilized to facilitate manual adjustment of the lumbar support. Rotation of the cam in a first direction cams a follower away from the axis of rotation of the cam. The follower causes an attached bar to rotate therewith. A lumbar support plate is supported by a cantilevered resilient or rigid element in the form of a leaf spring which is supported by the bar.

Abstract: A fully automatic machine tool for simultaneously broaching parallel slots on a plurality of workpieces mounted on a rotatable table in which the table is indexed between a plurality of broaching operations to revolve the workpieces and hence to effect rotation of the workpieces about their own axes with respect to the path of broaching tools.

Abstract: An accumulator conveyor having an endless driven propelling member has a vertically adjustable support for said propelling member. The support has a stationary lower member and a vertically movable upper member divided into a plurality of segments arranged in tandem with two or more actuators supporting each segment of the upper member on said lower member. Each actuator has a hinged connection to both the upper and lower members and means to limit variation in the spacing between the plates. An expander is mounted on each actuator for forcibly separating the upper plate and actuator and lifting the upper plate as it pivots the actuator about its hinged connection to both the upper and lower plates. Separating the plates lifts the propelling member into conveying mode.

Abstract: An improved locking assembly for a folding seat is disclosed. The assembly includes a support plate adapted to be fixedly mounted to a step at its lower surface. The seat is supported by a support member when the seat is in its support position. The assembly also includes a broad hook pivotally connected at one end thereof to the support plate at a position substantially midway between the sides of the seat to hold the support member in locking relationship with the step to prevent the step from unintentionally moving out of its support position.

Abstract: An automatic machine tool for sequentially machining a plurality of parallel surfaces on a plurality of work pieces, in which the work pieces are locked in position on an index table, and the surfaces machined in one operation are angularly disposed to the surfaces machined in a contiguous operation as a result of revolving the work pieces about the axis of the table.

Abstract: A machine for serrating the flanks of the teeth of a gear-like tool for shaving gears in which a generating, relative motion equivalent to rolling the tool on a rack is provided and in which one of a plurality of serrating tools are positioned for cutting serrations in the flanks of the teeth.

Abstract: A transport for loading semitrailers and other similar cargo carrying vehicles includes a portable conveyor shaped to extend into a trailer, and load the same from front to rear. The portable conveyor is preferably self-propelled, and has steerable front wheels at the downstream end of the conveyor, with a steering arm to manually pilot the conveyor into the trailer, and around the loading dock area. A guidance mechanism positions the portable conveyor in a selected storage position in the loading area, and comprises a pair of guides which depend from the upstream end of the conveyor, and matingly receive a floor mounted guide rail therebetween. Ramp blocks are located at the base end of the guide rail to positively and safely stop the conveyor in the storage position.

Abstract: In a system for controlling the horizontal and vertical alignment of a materials handling vehicle and for transferring articles to and from storage locations of a warehousing system in which several control sensors are positioned on the materials handling vehicle, a monitoring method and circuit for determing the operational status of the sensors by monitoring their status during a selected portion of a cycle of operation when their output is known. In one embodiment sensor outputs are cross checked against each other during a portion of an operating cycle in which the sensors outputs will be at a predetermined relationship to one another.

Abstract: A gear rolling machine in which a work gear and a conjugate gear-like rolling die are rotated in tight mesh with relative radial pressure of metal deforming intensity applied between the rotating members. The radial feed which applies the pressure is applied by a power train which includes a worm-worm gear combination driving a screw shaft-nut combination. After maximum pressure has been applied, the center distance is reduced by limited predetermined axial movement of the worm, without rotation, in which the worm acts as a rack to provide a predetermined limited rotation of the worm gear, and hence of the screw-nut combination.

Abstract: A broaching machine broaches a multiplicity of generally flat work pieces having a projection at only one side, which are advanced in a single file with the projections extending in the same direction. In order to broach the work pieces in stacked pairs in which the peripheries of the work pieces are continuous, rather than spaced apart by confronting projections, half of the work pieces are inverted and a pair consisting of one inverted work piece and one work piece which has not been inverted are stacked together and presented to a pot broach which broaches the peripheries of both work pieces of the pair in continuous cutting strokes. The finished work pieces are advanced away from the broaching station in stacked condition and are separated into two groups, one of which consists of the bottom work pieces of the pair and the otherconsists of the top work pieces of the pair. This places all work pieces in the same orientation with respect to the lateral projection.

Abstract: A suspension (10) for multi-wheeled vehicles includes a pair of outer equalizing beams (18) rockably supported by trunnion assemblies (22, 26) for deflection in response to changes in the terrain over which the vehicle travels. The equalizing beams (18) mount a pair of axles (16) supporting ground-engaging wheels. At least one inner equalizing beam (20) is mounted to a trunnion assembly (24) with the inner equalizing beam (20) providing a support for mounting of two leaf spring assemblies (28, 30) between the outer equalizing beams (18). In one embodiment, a four-axle suspension includes two leaf spring assemblies (28, 30) on each side of the vehicle. Each leaf spring assembly (28, 30) is secured between one of the outer equalizing beams (18) and the inner equalizing beam (20). The leaf spring assemblies (28, 30) include an axle connection (34) for supporting an axle (14) and a ground-engaging wheel.

Abstract: A telephone line holding circuit is disclosed which is adapted for temporary connection across a telephone line to maintain that line in a hold condition while line measurements and tests are being performed. The holding circuit is designed to be used over a wide range of line supply voltages and line resistances without introducing line measurement errors. The holding circuit includes a current regulator which maintains the line current at a predetermined level as long as the voltage appearing across the line remains above a predetermined voltage level. The holding circuit also includes a voltage regulator which reduces the predetermined current level to a value which prevents the average line voltage from being reduced below the predetermined voltage level. The holding circuit further includes circuit elements for protecting the circuit elements from damage caused by the application of excessive voltage on the line.

Abstract: Multi-cylinder in-line and radial pumps having an improved structure for coupling the piston heads to the crankshaft such that the number of parts commonly employed and the size of the resulting pump is greatly reduced when compared to prior art pumps now on the market. Both in-line piston pumps and radial diaphragm pumps are included. The connecting rods comprise plates, each having a bore through the thickness dimension thereof for receiving a cylindrical lobe formed eccentrically on the pump's crankshaft. Formed on one end of each of the connecting rods is a generally cylindrical bore, also extending through the thickness dimension of the connecting rod, the center of this bore being displaced inwardly of the end edge surface of the connecting rod by a distance which is less than the radius of the bore.

Abstract: A trash can hauler including a pair of longitudinally extending, skeletal trash can supports interconnected by U-shaped beam members. The supports include lower beams to support the bottom of a trash can. The supports include front, rear and upper beams adjacent the sides of the trash can to prevent lateral tipping thereof. The front and rear beams of the supports have telescopic connections to the upper and lower beams. A front beam member connected to the front beams has a pair of ground-engageable wheels rotatably secured thereto and a rear beam member connected to the rear beams has a ground-engageable portion. In one embodiment the connections between the supports and the front and rear beam members as well as the connections between the front and rear beams and the upper and lower beams are adjustable to enable positioning of the supports relative to the front and rear beam members to support any given size trash can.

Abstract: This invention relates to accumulator conveyors. During the past two decades many types of accumulator conveyors have been developed. These utilize a variety of different operating mechanisms and principles. This invention is in the field of accumulator conveyors which rely upon shifting the primary propelling member vertically between a raised position in which the propelling member is in driving contact with the lower faces of the article supporting and propelling rollers and a lowered position in which it is disengaged from these rollers. The invention is further directed to the type of accumulator in which the shift of the conveyor from conveying to accumulation mode and return to conveying mode is automatically controlled in response to the presence of the motion or lack of motion of an article on the conveyor. Heretofore, all conveyors of this type have had some type of sensor in the form of a roller, lever, wheel or pneumatic valve which is moved or triggered by an article near or over it.

Abstract: An accumulator has a driven belt which is so supported that it either propels the articles by contact with them or by driving rollers on which the articles are supported. In either case, rotatable supports are provided beneath the belt. Several of these supports constitute a group over which a secondary or satellite belt is trained. The secondary belt contacts the lower face of the driven belt, supporting and spacing it above the rotatable supports. Each support has at least two portions of different diameters with a ramp between. Control means shifts the secondary belt between the portions and in so doing moves the driven belt vertically between a raised article drive position and a lowered article release position.

Abstract: A seat pad support (12) disclosed includes at least one strip (22,24) of generally flexible tape which is preferably of the pressure sensitive type extending laterally between elongated supports preferably embodied by wire torsion bar springs (16) that cooperatively support a foam pad on a seat frame (14), whereby the tape connection of the springs facilitates storage, handling, and assembly. In the preferred construction, two end strips (22,24) of the tape respectively connect end torsion bars (28,30) of the springs (16). Each end tape strip (22,24) is folded and bonded to itself and preferably includes recesses (46) associated with the torsion bars (28,30) connected thereby so as to facilitate connection of the springs to the frame.

Abstract: A support for a flat conveyor belt is disclosed which utilizes a pair of tapered rollers, one on each side of the belt's centerline. The rollers are mounted on shafts which are inclined to the plane of the belt such that the roller surfaces are parallel to the surface of the belt. The roller supporting shafts are also at an angle of less than 90.degree. to the centerline of the belt such that they converge either upstream or downstream of the belt with respect to the belt's direction of travel. The rollers are also free for a limited degree of travel in response to the bias given to them by the movement of the belt. The angular relationship of the shafts to the belt centerline can be varied resulting in lateral movement of the rollers. This results in vertical movement of the belt and thus a conveyor with the capacity to serve as an accumulator.

Abstract: An auxiliary panel (12) for a bedding unit (10) is disclosed as including a peripheral wire (24) on the load supporting surface of the unit and a plurality of torsion bar springs (30 or 42) extending between opposite portions of the peripheral wire so as to resiliently provide increased firmness. Distal end torsion bars of each torsion bar spring are connected to the peripheral wire to provide the cooperation therebetween during use. Different embodiments of the panel incorporate sinuous wire type springs (30) and formed wire type springs (42) extending both longitudinally between opposite longitudinal portions (26) of the peripheral wire as well as laterally between opposite lateral portions (28) of the peripheral wire.