Abstract: An oven rack engageable with a chain for movement through a tunnel type oven comprising an open rectangular frame having a leading side, a trailing side, and outer and inner ends, there being a plurality of axially parallel spaced apart wire-like rods extending between said sides and being secured at their ends thereto defining a support for articles of food, or for vessels containing same; said frame being mounted upon runners, and a pin secured to said frame and engageable with the chain. A guide element is provided on the inner end of said frame for abutting the conveying chain to inhibit swinging of said rack during travel.

Abstract: A door operator of electromechanical character for utilization with pivotally mounted doors, as by a center pivot, a butt hinge, or an offset pivot, comprising a prime mover, a driving shaft, adapted for rotation about a vertical axis and being secured through an arm to the door to be operated. A gear train interconnects said prime mover and said driving shaft wherein the gears are mounted as by a unique arrangement of needle roller and needle thrust bearings to permit said gear train to operate smoothly in door opening operation as a speed reducer and in door closing operation as a gear increaser. Energy storing means operatively connected to said driving shaft for storing energy during door opening operation and for energy releasing to drive said gear shaft during door closing operation. The said operator is adapted for compact disposition within the header of a door frame.

Abstract: A printing table with adjustably positionable, work-engageable reference pins which comprises discs rotatably mounted on the table with the top surfaces of said table and discs being coplanar; each disc having a groove within which a reference pin-carrying block is slideably disposed; and with there being latching components for respectively locking the discs and the related blocks in relative selected position. The table may also be provided with grooves and cooperating reference pin-carrying blocks.

Abstract: A stamping press system, the press having a ram, a driving means for the ram, and an electrically energizable ram control device for causing the driving means to drive the ram through a stamping cycle. The press is guarded by a barrier movable between an open position permitting operator access to the point of stamping operation and a closed position barring such access. A press trip control for the system has a pair of actuators, one for each hand of the operator. Upon their concurrent actuation, the actuators cause movement of the barrier to the closed position and energization of the ram control device initiating a stamping cycle. Provision is included for preventing such energization thereby preventing a stamping cycle if the barrier is not closed. Circuitry of the system prevents re-energization of the ram control device, thus preventing a further cycle until the operator has removed both hands from the actuators.

Abstract: A compact container and viewer for processed film transparencies. The combined unit is a mailable package which can be readily converted to a slide viewer by removing all but a single selected slide from the package. The latter may also function as a storage receptacle. In another form, the combined unit may additionally include a magnifying lens and a light source.

Abstract: A separator for immiscible, emulsionless-forming liquids of different specific gravity which comprises a preferably transparent vessel; a valve provided in the lower end of said vessel for movement between open and closed condition whereby through disposition in the former, the heavier liquid may be discharged into a receptacle upon which said separator is stably disposed by means of a support plate.

Abstract: A bicycle having front and rear wheel caliper brakes each being connected by a cable to a linkage including a swingable cam element which is normally disposed in the path of travel of a cooperating cam member mounted for movement concentrically about the pedal axle whereby the cam element through its swingability is removed from such path during forward pedaling action and is lockingly engageable with such cam member upon back pedaling action. In the latter condition force is applied to the linkage for effecting a pull upon the cables to effect braking operation. The cam members are so related to the pedal cranks that when engagement with the cam element is effected one pedal crank will be downwardly directed whereby a support stand carried upon the associated pedal may cause such pedal to swing to present the support stand for engagement with the support surface.

Abstract: An ice skating surface of artificial or non-refrigerated character which is constituted of a multiplicity of discrete panel-like components each of which are preferably of identical construction for ease of assembly and replacement. Each component is desirably of square form being fabricated of moldable material and having a thickness in the range of 1/4 inch to 1/2 inch. Each component is provided along its edges with alternating tongues and cavities of complementary contour for interlocking relationship with the corresponding elements on the confronting edge of adjacent components so as to form an integrated surface wherein accidental parting of the components is reliably inhibited.

Abstract: A retention device for filleting fish comprising a flat surface-forming, elongated body for supporting the fish to be filleted. The body is provided adjacent its forward end with a curvate opening, the bight portion of which extends forwardly of the body, and having a forward and rearward edge portions. The curvature of the opening is generally the same as the anterior edge of the external gill openings of a fish whereby the gill openings are receivable within the opening. The body opening rearward edge is provided with a series of serrations or corrugations for wedging engagement within the individual gill ports of the received fish for maintaining the same stably in position on the body during filleting.

Abstract: The present invention constitutes a fuse which comprises a glass envelope having a solid base portion; there being a lead-in conductor of Dumet metal projecting through the base and into the interior of the envelope. The inner end of the lead-in conductor is rigidly engaged to the inner end portion of a filament. The other end of the filament extends into the solid base and is therein fixedly joined to the inner end of a lead-out conductor formed of Dumet metal. The said conductors in their outer ends are suitably connected to terminals or posts in a base plug which supports the glass envelope.

Abstract: A diagnostic instrument for use in determining the cutaneous sensory capacity of a patient which comprises an elongate body having a bore proceeding from one end and terminating spacedly from the other end. Fitted within said bore is a metallic member having an enlarged head projecting beyond the bore opening for covering the adjacent end of the body. Said body is fabricated of material, such as wood, rubber, plastic or synthetic material having heat transfer properties relatively reduced with respect to the heat conductivity of the metallic member.

Abstract: An infrared emitter panel comprising a body of refractory material, a non-helical continuous heating element of serpentine form embedded within said refractory material and having opposed ends projecting through said refractory material for connection in circuit to a source of electrical power. Said body of refractory material is provided with expansion zones adjacent each of the hair pin-like bent ends of said heating element for allowing unimpeded linear expansion and contraction of said heating element upon energization and de-energization respectively.