Abstract: Method of making a precision injection-molded form for an inductance coil comprises a cylindrical core member having a surface of relatively low dimensional precision, and a thin plastic layer molded over the surface to provide a surface of high dimensional precision for supporting the windings of the coil. Metal insert-members having threaded axial bores and radially extending wing portions are provided at either end of the core to establish electrical contact with the winding and a mounting capability for the assembly. The coil form is formed by injection molding techniques and apparatus which provide for axial compression of the assembly prior to molding to obtain a predetermined longitudinal dimension, and for equalization of forces exerted during molding to prevent longitudinal deformation.

Abstract: A tennis ball apparatus having an electrically conductive outer surface. The electrically conductive material is substantially uniformly distributed through a cloth covering which when bonded to the spherical core of the ball the electrically conductive material will be distributed from the core of the ball to the outer surface thereof. The outer covering of the ball could be made from a material of wool, nylon and metal. The metal could be stitched, weaved or needled into the cloth covering.

Abstract: A weighing apparatus for measuring loads having a movement with one or more vibrating strings where the mechanical elements of the movement are non-adjustable and further including an evaluating device with arithmetic logic units for introducing constants into the evaluating device that can be adjusted during initial calibration of the apparatus to remove errors inherent in the movement.

Abstract: A temporary wall bracing system is disclosed which is suited for one-sided or two-sided wall application, which wall bracing system includes a framework attached to, and cooperatively associated with, a foundation and anchor plate for bracing a newly constructed brick or masonry wall to enable such wall to withstand wind forces and the like until wall construction and associated permanent bracing is completed. The foundation plate is supported directly on and across the preformed foundation and includes a flange portion which engages the foundation sidewall surface opposite to the side adjacent the framework. The anchor plate is preferably fixed to the ground by means of convergingly oriented steel stakes.

Abstract: The overlapping edges of a continuously formed tubular configuration of plastic web are fused together between a backup ring and a sealing roller continuously heated by hot air directed against the periphery of the roller. When the heated roller is pressed in sealing engagement against the overlapped edges of the moving film it is rotated due to the frictional engagement of the roller with the film. A portion of the hot air impinges on blades extending laterally from opposite sides of the roller to apply torque thereto and thereby keep the roller spinning whenever the roller is out of frictional engagement with the overlapped edges of the continuously advancing web. By keeping the roller spinning it is evenly heated and hot spots are not allowed to develop as they would if the roller stopped while hot air continued to impinge on it. Cooling air is applied to the sealed overlapping edges after the sealing operation has been performed.

Abstract: A system for monitoring respiratory pressure or other pressure-variable function at a remote location develops within a transmitter terminal a carrier tone frequency-modulated according to applied pressure. The carrier tone is conveyed over a conventional telephone channel to a receiver terminal wherein an analog signal is developed from the carrier tone for application to recording or indicating instruments. The base frequency and deviation characteristic of the carrier tone is preset and non-user adjustable to avoid the necessity of setting up the system prior to use. To assure system continuity a pilot tone is generated at the receiver terminal and conveyed over the telephone channel to the transmitter terminal, and an alarm is sounded at the terminals when either but not both of the pilot and carrier tones are absent in the telephone channel. The terminals are preferably constructed within compact housings having wells for receiving the handsets of associated telephones for convenience of use.

Abstract: A weight transfer rail traction vehicle adapted for travel on alternate sets of rail or road wheels which is characterized by a number of features including: a spring and shock absorber system which cooperate to maintain the springs, while in a rail travel mode, in an active condition despite substantial weight transfer loads being placed thereon; a hydraulic system which enables the differential axles to be optionally spring supported to the frame or in a rigid fixed relationship therewith; a differential axle suspension system wherein the spring supported axle moves in a substantially vertical plane without lateral shifting; a shock absorbing coupler; a coupler mounting arrangement which includes a coupler carriage directly mounted to a lateral frame member of the vehicle which serves as a guideway for directing travel of the coupler carriage and hence the coupler mountd thereto in a horizontal direction and wherein the coupler itself is mounted for vertical movement with respect to the coupler carriage; a

Abstract: An implement such as a tractor-propelled, multi-row planter having row markers hingedly mounted on opposite sides is provided with an automatically operating hydraulic sequencing valve for alternately actuating the markers. The sequencing valve is adapted to be readily connected with the hydraulic system of the tractor used to raise and lower the implement. If desired the hydraulic circuit may be arranged so that the sequencing valve is automatically actuated or sequenced when the implement is raised and lowered whereby the oppositely mounted markers are alternately raised and lowered automatically with the raising and lowering of the implement itself.

Abstract: A hitch assembly for detachably connecting an independently operable rotary ground tiller to the rear of a garden tractor or other riding vehicle for towed operation therebehind. Remote tiller clutch and tilling depth controls are mounted on the tractor within easy reach of the tractor operator.The hitch assembly includes a draw bar hitch pivotally mounted to the rear of the garden tractor, a tongue member mounted to and extending forward from the tiller, and a dual pivotal mounting universal joint releasably pivotally mounted to and between the draw bar and tongue. Removable pivot pins provide means for maintaining the universal joint in pivotally mounted relation between the tongue and draw bar.As hitched to the tractor, the rotary ground tiller, when desired, may be easily disconnected for independent walk-behind operation by removing one of the pivot pins from the hitch mounting, disconnecting the remote clutch control cable, and remounting the conventional tiller clutch control to the clutch.

Abstract: Improvements in molding apparatus and method for forming a plurality of patties from a mass of agglomerable edible material such as, chopped meat, fish, poultry, vegetables, or the like. The molding apparatus includes a rotatable turret having a plurality of mold cavities positioned therein with a piston reciprocably mounted in each cavity. Upward piston reciprocation forms a mold in the lower portion of the cavity. An improved food-feeding mechanism having an enlarged end opening in communication with the cavity pushes the edible material into the mold over a wide portion of the turret rotation. The piston reciprocates upwardly while in communication with said food-feeding mechanism to draw food material into the mold and avoid air pockets in same. As the turret rotates and the piston reciprocates downwardly to expel the patty, an improved continuous wire band patty cut-off mechanism cleanly separates the patty from the piston to which it typically sticks, without deforming the patty.

Abstract: Apparatus for manufacture of wet process phosphoric acid wherein phosphate rock and sulfuric acid are separately added to a combination reactor and cooler unit at a rate of addition such that the increase in calcium content and sulfate content in the slurry contained in the unit are small. Circulation of the slurry is provided and the rate at which sulfuric acid and phosphate rock are added is small compared to the rate of circulation of the reactor slurry.

Abstract: The occurrence of fault current flow in an alternating current carrying conductor is indicated if the power flow in the conductor is in one or a preferred direction and is not indicated if the power flow in the conductor is in the opposite direction.

Abstract: An improved fuse clip assembly for receiving and retaining one end of a blade type fuse. The assembly includes an inexpensively produced extruded electrically conductive member which includes, both, an improved fuse blade contact surface, and a terminal connector. The assembly also includes a resilient member which presses a fuse blade inserted in the assembly against the contact surface on the extruded member for improved electrical surface contact therewith. Since the terminal connector and electrical contact surface are integrally formed in one member. The resilient member can be inexpensively made of a dielectric material.

Abstract: The method of forming a uniform cross-sectionally dimensioned loaf of food in a mold by filling a mold, which has a moveable plug covering one end, with stuffable food, cooking the food which expands and pushes the plug in one direction, and thereafter squeezing the food while chilling by pushing the plug in the opposite direction.

Abstract: Orthodontic arch form of wire, or other resilient materials, and method of making same, having a compound elliptical shape wherein the form is generated by plotting three foci falling at the apices of an isoceles triangle and utilizing a string or the like in a closed loop of a length greater than the sum of the sides of the triangle to be restrained at the foci during the recording of the form by movement of a recording instrument restrained by the string.

Abstract: A refuse loading apparatus for use in the hopper of a tailgate loading assembly at the rear of a vehicle having a refuse storage body. The packer plate is powered by a hydraulic actuation system including a first pair of hydraulic cylinders which cause rearward and forward motion of the packer plate, and a second pair of hydraulic cylinders which cause elevational movement of the packer plate in the hopper. The packer plate is guided and restrained in its movement by the interior parameters of the hopper and the limits of the hydraulic cylinder movement. The pairs of hydraulic cylinders are interconnected through the hydraulic actuator system such that when the hydraulic cylinders are fully extended, or when the packer plate contacts an obstruction, whether it be the parameters of the hopper or refuse which it cannot move through the hopper, the packer plate changes direction and moves toward completion of a cycle through the hopper.

Abstract: An improved relief valve, particularly suited for interior use in refrigeration systems. The valve includes a valve body having an inlet, an outlet, and a passageway therebetween with a valve seat positioned in the passageway. Inside of the passageway are mounted an adjustable valve spring retainer, a coil valve spring, a valve piston including a fluorocarbon sealing surface thereon, and a bearing means mounted between one end of the valve spring and either the retainer or valve piston. The spring retainer is adjusted by turning in its threaded mounting. The bearing means prevents the turning moment applied to the retainer from extending to the valve piston. Any rotational relation between the piston sealing surface and seat which would be deleterious to the sealing engagement is eliminated.

Abstract: A compatable stereophonic television sound transmission system for transmitting left and right audio signals in conjunction with a television broadcast wherein video information is conveyed on an amplitude-modulated carrier in a frequency channel having defined frequency limits. The system includes at a transmitter location a multiplex generator for generating a composite signal having a first component representative of the sum of the audio signals, a second component comprising an amplitude-modulated suppressed carrier subcarrier signal representative of the difference between the audio signals, and a pilot component representative of the phase and frequency of the suppressed carrier. The composite signal is utilized to frequency-modulate a sound carrier to develop an RF signal component which is added to the television channel at a discrete frequency spacing from the video carrier.

Abstract: This invention relates, generally, to fault indicators and it has particular relation to tools for testing fault indicators of the kind and character disclosed in my U.S. Pat. No. 3,906,477, issued Sept. 16, 1975.

Abstract: A surface thermocouple assembly including a metal sheath having thermocouple conductors extending therethrough in spaced relation from each other and from the sheath by electrical insulating material, an opening in the sheath wall at the hot junction end and through which the conductors are extended, a ceramic plug receiving the conductors and mounted in the opening, a fusion weld of the conductors outside the plug, and a V-shaped pad with a knife-shaped edge integrally formed at the junction end. The thermocouple is made from a length of sheathed thermocouple conductors by forming a keyhole slot at the junction end, removing the insulation around the conductors, bending the conductors through the opening of the keyhole slot, mounting a ceramic plug in place, fusion welding the ends of the conductors outside the plug to define the thermojunction, inserting a metal end plug at the junction end, welding closed the slot and the end plug in position, and building up a V-shaped welded pad at the hot junction end.