Abstract: An egg washing means including a plurality of cylindrical brushes being mounted with complete freedom of rotational movement and in being driven axially for lateral movement across a conveyor which carries eggs therebelow. The eggs are washed by cleaning fluid being sprayed upon the brushes which then contacts the egg surfaces for cleaning thereof. Spacing between the brushes is small enough that two adjacent brushes will contact the same egg at the same time causing a scrubbing-type action. Each cylindrical brush is mounted upon a rod which is driven for lateral movement across the path of egg movement by a cam attached with respect to the end of the rod. The end of the rod includes a cam follower having a generally U-shaped yoke member with a roller mounted therein. The roller contacts the cam face and follows the profile and lobe of the cam causing lateral movement of the cylindrical brushes.

Abstract: A wide island, open top refrigerated display case of the air defrost type has a vertical, hollow partition extending centrally and longitudinally of the case. The partition functions, during defrost cycles only, as an air passage through which the flow of defrost air is induced by operation of a defrost fan mounted in a hollow sill extending along the top of the partition. During refrigeration cycles, the fan is idle and there is no air flow within the partition, so that it forms a hollow dead air space operative to insulate from one another the product wells separated by the partition, a feature of particular importance when one well is refrigerated to a temperature different from the other. Various configurations are disclosed, in some of which the air is forced downwardly within the center flue or passage during defrost, while in others the air is drawn upwardly through the defrost passage.

Abstract: In the ultrasonic inspection of test pieces, particularly tubular materials, a device for coupling a transducer to the surface of the test material, by a liquid medium, incorporates desirable features of both "contact" and "immersion" transducers. Disclosed is a coupler the housing of which has a cavity having a water supply inlet and an air exhaust vent. Water flow into the cavity if so controlled as to initially purge air from the cavity to fill it with water, after which the water flow is at a carefully controlled rate effective to keep the cavity filled while supplying fresh water only to the extent necessary to make up for water leaking out through a narrow gap defined between the test piece and the face plate of the disclosed coupler. The water within the cavity provides a liquid couplant between the test piece and a transducer carried by a holder mounted in the cavity for precision adjustment.

Abstract: A panel structure for mounting on any of various enclosures susceptible to explosions or excessive internal pressures, is formed as a self-contained unit mountable in sealing relation to a pressure-relief opening of the enclosure. Disclosed is a one-piece back plate with an integral mounting flange isolating all other frame components from the area in which a sealing function takes place. A peripheral seal on the closure panel exerts pressure against the back plate in a normal position of the closure panel, in a direction parallel to the lines along which internal pressure is exerted against the closure panel, thus providing an efficient seal about the entire periphery of the relief opening, without the necessity of precisely dimensioning the sealing gasket and frame components at the locations where they are interfaced for sealing engagement. The gasket includes side-by-side primary and secondary sealing beads, one of which projects forwardly a distance less than the other.

Abstract: A "U" shaped arc chute, formed in a single piece stamping, with louvered openings at the center section. The louvers cool and safely direct gases, generated during short circuit operation of a circuit breaker, away from the metal front of circuit breaker panel board, thereby reducing the likelihood of an electric arc striking between the circuit breaker line terminal contact and the circuit breaker enclosure. The louvered arc chute is durable, and provides a barrier to prevent access to the interior of the circuit breaker.

Abstract: A boat light is especially adapted to be mounted upon the transom or stern of a cabin cruiser, speedboat, small yacht, or the like. A holder for a lamp unit has a spherically curved outer surface engaging a complementary inner surface of a housing attachable to the hull of the boat. The holder is universally adjustable to selected angular positions of adjustment relative to the housing. In a typical adjustment, the beam of the lamp unit may be projected horizontally despite the inclination of the transom from the vertical. In the selected position of adjustment, the tightening of screws by which the device is assembled and mounted on the transom is effective to preserve the lamp unit holder adjustment. This occurs when a shield closing the inner end of the housing is caused to bear against a rearwardly projecting surface of the holder. The holder, or at least the shield-engaging surface thereof, is of a deformable material.

Abstract: A refrigerated display case of the wide island type having side-by-side, upwardly opening product display wells, uses its primary air circulating fans and a defrost fan to draw ambient air into the inlet and outlet of the air conduit of one product well, circulate it through the conduit of that well, transfer it to the air conduit of the second well, circulate it through the second conduit, and discharge it to atmosphere through the inlet and outlet of the second conduit. The case incorporates a solid center partition having an opening near the bottom of the case in which the defrost fan is mounted to transfer the air from one product well to the other. A splitter panel and sill at the upper end of the partition prevent the intake air from becoming mixed with the exhausted air. During a defrost cycle the air can be drawn into the first well and exhausted from the second well for the full duration of the cycle.

Abstract: A lock off-lock on for a handle of an electric circuit breaker includes a unitary metallic member having a first handle engaging portion adapted to be inserted into an opening of a circuit breaker handle. The opening can be provided in a direction perpendicular to the reciprocating movement path of the handle between "on" and "off" positions. The member includes a second handle engaging portion joined to the first portion by a bight to form a U-shaped structure. The second handle engaging portion engages a surface of the handle which is in exposed adjacency to a dependent arcuate portion which is in proximal relationship with the interior of a slot in the housing in which the handle outwardly extends. A flat spring, coupled to a part of one side of the second portion by an angular bend, is engageable with the dependent arcuate portion and is in abutting relationship with the housing at one of the edges of the slot.

Abstract: A terminal connector for electrical extension cords include a safety cap characterized by requiring apposable or gripping motion to expose to electrical ports of the connector. Most adults are able to correctly manipulate the safety cap but children do not have necessary strength and coordination.

Abstract: A bus bar is held at the peripheral portion of a molded plastic housing by means of a formed metallic support having a single tab along an edge thereof and a pair of spaced apart tabs along an opposite edge thereof. the support has an oval hole therein so that the bus bar can be affixed thereto. The molded plastic housing has a pair of opposed walls at the peripheral portion. One wall has a vertical groove from its top to a bottom stop, so that the single tab can rest therein. The other wall has a first vertical groove from its top to a bottom stop (level with the first bottom stop) and a second vertical groove from the bottom of the wall to a top stop. The top stop is located above the bottom stops by a distance equal to the thickness of the support. The support rests within the grooves of the housing, and holds the bus bar.

Abstract: A laryngoscope is disclosed of a conventional configuration having a blade handle which includes a device for the applying of topical anesthesia as the blade of the laryngoscope is inserted into the pharynx and larynx of a patient. The application device includes a reservoir for holding an amount of topical anesthesia within a fluid chamber defined therein. The reservoir may be attached detachably with respect to a handle of a laryngoscope, or may be a contiguous and inherent part thereof. A supply conduit being in fluid flow communication with the fluid chamber extends outwardly from the reservoir such that topical anesthesia may be caused to flow therethrough. A retainer holds the supply conduit in the proper position adjacent to a blade of the laryngoscope in such a fashion that the tip of the conduit is adjacent to the forwardly extending portion of the blade to facilitate the application of topical anesthesia in the area immediately forward of the blade.

Abstract: An improved oscillator circuit, adapted especially for use in generating multi-frequency wave patterns occurring within the ultrasonic range, incorporates a transistor base drive network in which an alternate discharge path is used for coupling capacitors already known in circuits of this type. Power losses occurring in the transistors are lessened by employing transistors having reverse base-emitter breakdown voltage ratings that are higher than those conventionally employed. Use of the substituted transistors becomes possible by substituting the mentioned alternate discharge path, to compensate for the lower average discharge current that is known to pass through the base-emitter circuits of the transistors by reason of their higher reverse base-emitter breakdown voltages. The improved circuit in this way reduces power loss and its consequent temperature rise in the transistors and in their base and emitter resistors to increase output power to the accompanying reduction of transistor losses.

Abstract: A valve assembly is adapted to control the water level within a toilet flush tank, by gravitational bodily movement of a hush tube and a valve housing integral therewith, responsive to emptying of the tank. A float coaxial with and secured fixedly to the hush tube is weighted in a manner to cause the gravitational motion of the hush tube and valve housing, when the float loses buoyancy as a consequence of the emptying of the flush tank contents. The gravitational movement of the float, hush tube, and valve housing in respect to an upstanding fill tube upon which these elements of the assembly are mounted for up and down sliding motion, causes actuation of a pilot reed valve. The pilot valve acts to break a valve seal between the fill tube and the valve housing, to an extent such that a very small force used in the opening of the pilot valve is sufficient to allow the normal line pressure to assert itself for full unseating of the valve and a consequent normal refilling of the flush tank.

Abstract: A sleeve-like covering is provided for a shelving bracket, in particular a bracket that is usually formed from sheet metal as an elongated, blade-like arm having mounting hooks engageable in selected slots of a vertical standard. The covering is formed with an upwardly opening kerf or groove receiving an otherwise basically conventional shelf bracket of the type described, and has means for tightly gripping the bracket responsive to engagement of the blade-like bracket arm in the groove. When so applied, the covering completely conceals the metallic blade to enhance the appearance of a shelving system. The covering may be formed of wood adapted to match or harmoniously blend or contrast with the shelving material. Or, the bracket cover may in some instances be of a molded plastic, again selected to complement the shelves supported thereon.

Abstract: A refrigerating system of the type used in supermarkets for refrigerating foods merchandised in refrigerated display cases, utilizes a control valve sensitive to pressures in a surge receiver and the liquid line. The valve opens whenever the receiver pressure drops below that of the liquid line more than a predetermined amount, to force hot gas from the compressor discharge line into the receiver. An elevation of the receiver pressure results, until the predetermined pressure differential between the liquid line and the receiver is re-established.

Abstract: A safety ashtray device including a housing having a switch mounted in the upper surface of the housing and secured with respect to the bottom surface of an ashtray device. The ashtray device is movable from an upper switch position to a lower switch position and vice versa. The ashtray device when in the upper switch position closing the contacts in the switch and while in the lower switch position opening the contacts in the switch. A power source is mounted within the housing and is electrically connected in series with respect to the switch contacts as well as a timer and a buzzer. The timer is operable to be set as desired by the operator and the buzzer is adapted to activate responsive to the timer reaching the expired time and the ashtray being in the lower position. In this configuration a series connection will be made between the positive and negative terminals of the power source by a series connection through the switching device and the timer and the buzzer device and returning to the battery.

Abstract: A runner for conveying molten pig iron and slag from a blast furnace of a steel manufacturing facility, is of wholly metallic construction and is hollowly formed to provide a cooling jacket through which water is circulated. Each runner so formed is an individual section in a string of other, similarly formed runners each of which has its own inlet connected to a source of water under pressure, and its own outlet to a suitable drain or reservoir where water temperature may be measured and observed. Water entering each section through the inlet courses through a tube that extends within the jacket substantially from one end to the other end, adjacent the slag channel of the runner, then extends transversely of the channel to the other side of the runner, thereafter extending longitudinally of said other side. The water flows out of the tube, within the jacket, after having extended along both sides of the channel in heat exchange relation to the slag flowing through the channel.

Abstract: A passive bowstring release mechanism is disclosed which includes a securement arm pivotally mounted with respect to a housing. The housing has a slot extending down the foremost edge thereof into which the securement arm is pivotally secured. The housing also defines a slot extending vertically downward therethrough in the edge of the housing adjacent to the longitudinal slot. A bowstring may be positioned extending vertically through the vertical slot of the housing and will be retained therein by the holding section of the securement arm. This holding section includes a concave surface adapted to abut the string and maintain it in position while the securement arm is maintained in the retaining position. A handle portion of the securement arm is adapted to be contacted by the thumb of the user to thereby hold the bowstring in place extending through the slot and locked therein by the concave surface of the holding section of the securement arm.