Abstract: A motor driven plotter has a plotting head which is translated in two coordinate directions over the work surface of a plotting table. The plotting head is mounted on a first carriage which moves in one coordinate direction and a second carriage is mounted on the first for movement in the second coordinate direction. The limits of both carriages in each coordinate direction are directed by means of a pull cord suspended in a rectangular pattern from the first carriage. A cord portion or segment is intersected and extended by a contact at each limit of travel in the coordinate directions. A switch connected to the cord produces a limit signal when the cord is extended.

Abstract: An improved metal encased radial-type oil shaft seal of either single or dual lip construction wherein the primary seal lip is polytetrafluoroethylene -- or the like and is bonded and mechanically interlocked to the metal case by an elastomeric material.

Abstract: In the illustrative embodiments of the invention disclosed, autostereoscopic pictures are produced by projecting a series of two-dimensional views of an object field onto a lenticular screen. Substantially uninterrupted and non-overlapping condensed, or lineiform, images of the two-dimensional views are formed beneath each lenticule of the lenticular screen by setting the number M of these images in the image band beneath each lenticule, and hence the total number of two-dimensional views projected, equal to w/m, where w is the lenticule width and m is the width of each condensed image. In order to project the required number M of two-dimensional views while avoiding gaps between adjacent condensed images, the projection lenses and the associated film frames are positioned along a plurality of adjacent, parallel, straight lines in a manner such that the apertures of the lenses are effectively in edge-to-edge contiguous relation.

Abstract: Sealing rings located in an annular recess about a piston in a Stirling engine have a continuous sealing ring of polymeric material having an L-shaped cross-section producing an annular flange abutment. A second discontinuous polymeric ring has a surrounding resilient steel strip resting against the abutment so that internal pressure cooperates with the two rings to effect a seal.

Abstract: A device for measuring growth of tumors includes concentric rings on a carrier, the radial spacing of the rings from one another progressively increasing in a radially outward direction.

Abstract: A dynamic seal between the high pressure discharge chamber of a centrifugal gas compressor and a sump chamber in which the driving machinery for the impeller of the compressor is contained, the sump chamber in normal operation being maintained at substantially the same pressure as the pressure at the inlet of the compressor impeller is formed by the opposing faces of a seal stator and a seal rotor, the seal being vented at an intermediate location along the axial extent of the seal inwardly through the rotor and to the space at the inlet or suction side of the impeller.

Abstract: A toy phonograph comprises means for pressing a pickup arm into engagement with a phonograph record for reproducing recorded sound from the phonograph record playing surface during rotation thereof. The sound is picked up from a sound reproducing groove in the playing surface by direct resilient contact of a speaker cone assembly with the pickup arm. The speaker cone assembly includes a lift bar containing an aperture adjacent the end of the recording with a protrusion on the pickup arm being received in the aperture as the pickup arm reaches the end of the recording. The drive means for the turntable has an associated electrical contact located between the phonograph record playing surface and the lift bar. When the protrusion is received in the lift bar aperture, the lift bar drops a sufficient amount to engage a leaf spring contact which is normally biased to a closed circuit condition to open the circuit and thus shut off the drive means.

Abstract: An apparatus for the generation of rifle targets for load development and accuracy testing of scope assisted rifles is disclosed in which the rifle targets have sighting areas optimized for a particular scope. The apparatus comprises a base having a first axis and a second axis orthogonal to the first axis, a plurality of apertures in the base for forming the sighting areas on the target, pilot means within the base for successively positioning the apertures to form the sighting areas and lines of space control disposed about the pilot means for optimizing the dimensions of the sighting areas. The present invention is utilized to generate rifle targets having sighting areas with dimensions optimized to the power of the scope and the width of the cross hairs. An embodiment of the present invention is capable of generating targets having sighting areas with dimensions optimized by the size of the dot reticle of the scope.

Abstract: A guard for swimming pool cleaning hoses includes a spool having a hole therethrough, the hole dimensioned so as to receive the hose. The periphery of the spool is provided with a concavity, with a plurality of individual roller segments rotatably mounted in the cavity about a shaft, whereby the roller segments produce frictional contact between the hose and a pool being cleaned.

Abstract: A composite tubular food casing comprising a substantially flattened tubular substrate of cellulosic material and a melt extruded layer of thermoplastic material bonded to the tubular substrate with a beaded seam formed in the thermoplastic material adjacent the flattened edges of the cellulosic layer and separated from each edge a predetermined distance of no greater than 0.003 inches.

Abstract: In order to decrease light beam projectors and avoid time consuming and tedious transferring and exchanging operations in the tire manufacturing process, a light beam projecting apparatus of the present invention for use in production of an endless rubberized cord fabric, comprises a light beam projector disposed in spaced and opposed relation with a tire building drum to wrap a band-formed rubberized cord fabric; an indicator assembly located in the vicinity of the light beam projector and interposed between the light projector and the tire building drum, the indicator assembly including an indicator film having a multiplicity of indicating lines spaced from each other in a direction parallel to the rotational axis of the tire building drum to be projected upon the peripheral surface of the tire building drum; and a focus lens assembly arranged between the tire building drum and the indicator assembly and including at least a focus lens in alignment with the light beam projected through the indicator film by

Abstract: A combustion engine system has a tank for volatile fuel with a flexible bag inside equipped with its own breather valve separate form the fill pipe for the tank. When the tank is filled, a muff around the full pipe seals the tank against exhaust of volatile vapors, and air from the bag is forced out the breather valve as it is displaced by the liquid fuel until a valve element on the bag shuts off the breather valve, whereby only pure air is vented to the atmosphere. As the tank empties during use, air returns through the breather valve to fill the bag and replace the space in the tank previously occupied by the liquid fuel, and incoming air may be dried. There is a vapor return for the automatic nozzle used to fill the tank with fuel from a stationary reservoir at the filling station and automatic means to prevent filling the tank until the nozzle is sealed in the fill pipe.

Abstract: A toilet seat operating assembly for protecting the hands of a user of the toilet against bacteria. The operating assembly is adapted to be attached to a toilet seat and includes a spherical hand-engaging portion which can be readily removed for cleaning and sanitizing.

Abstract: A system for allowing an operator to accurately observe the liquid level in a tank truck or transport trailer that is filled from a bulk storage tank through a flange on the line from the storage tank that is attached to a matching flange of the tank truck or transport trailer by incorporating a float gauge structure into the flange on the line from the storage tank, thus, enabling the operator to accurately observe the level of the liquid in the tank truck or transport trailer and manually shut off the flow from the storage vessel when the tank truck or transport trailer contains the desired amount of liquid. The system includes sensors designed to indicate sealed engagement of the flange on the line from the storage tanks with the matching flange on the tank truck or transport trailer.

Abstract: Submerged netting which can immediately rise to water's surface by means of inflatable bladder associated therewith to prevent drowning of endangered victims.

Abstract: A gasoline dispensing nozzle for discharging gasoline into receiving vessels and for removing vapors therefrom through a vapor removal line is provided with an automatic shut-off device that terminates the delivery of gasoline in the event liquid gasoline flows into said vapor removal line. The shut-off device comprises a sensing orifice disposed at the end of a flexibly mounted tube within said vapor removal line, which tube leads to a passageway extending into the housing of said gasoline nozzle and terminating in a chamber that contains a conventional, diaphragm-operated, trigger mechanism for closing the main nozzle valve. In operation, no matter which way the nozzle is inserted into a gasoline tank fill pipe, the sensing orifice, by gravity, will fall into a position such that, if gasoline flows into said vapor removal line, it must also flood the sensing orifice.

Abstract: A conduit especially suitable for carrying high temperature fluids is disclosed herein and includes an outer casing, a concentric inner core and an intermediate concentric layer of insulation material. The conduit also includes what may be referred to as a pressure relief valve located through the outer casing of the conduit and extending into the concentric layer of insulation material. In the event that the fluid finds its way into this layer of insulation material and in the event it expands, the pressure relief valve provides a readily available passage to the ambient surroundings for the expanding fluid.

Abstract: This wheel gauge is for use in obtaining primary measurement data of an unidentified automobile wheel and includes a hub opening indicator, a bolt circle diameter indicator and a rim diameter indicator. The gauge includes a base plate and the hub opening indicator is provided by stepped elements mounted to the base plate and selectively insertable into the hub opening; the bolt circle indicator is provided by a sliding element mounted to the base plate and having a transverse plunger receivable into the bolt openings, and the rim indicator is provided by a movable element mounted to the base plate and movable into engagement with the wheel rim.A modified device includes a plurality of components each having a base including a reduced portion providing a hub opening indicator and an offset portion providing a bolt circle indicator said portions being insertable into the hub and bolt openings respectively.

Abstract: A microscope frame assembly comprising a pair of parallel rings rigidly mounted on a base and there being mounted on the rings,(a) a support for the eyepiece and other optics of a microscope which includes an adjustable stage and(b) at least one support for at least one microelectrode and manipulator therefor, both said supports being adjustable in position around the circular path defined by the said pair of rings.The stage is carried by a subframe which extends from the support for the microscope and includes controls for effecting X, Y and Z movements.

Abstract: Double wall helical pipe formed from a single metal strip, pipe forming method and configuration of strip for forming such pipe. A metal strip is formed with pipe seam elements and curled into overlapped helical convolutions, and the seam elements are secured together to provide a helical pipe seam. One or both pipe walls may be corrugated.