Abstract: A coupling for an electric cable for connecting the cable to the wall of an electric outlet box so that the cable cannot be pulled free of the box, the cable wires being connected to the electrical unit in the box. A modified form of the device shows the coupling connecting the cable to an electric socket and again the cable cannot be pulled free of the socket. The coupling includes a cable receiving sleeve in which a plurality of longitudinally wedge-shaped grooves are provided. Wedges are inserted into the grooves and they are provided with teeth on their inner surfaces for gripping the cable. The inclination of the teeth is such as to grip the cable and prevent its withdrawal from the coupling.

Abstract: An endless train of dollies with means for continuously moving them in an oval path and in either direction, each dolly supporting a tray rack that in turn can removably support a plurality of trays in stacked relation. Bus boys load trays of soiled dishes into the tray racks at one station in the endless train of moving dollies. The endless train of moving dollies is positioned adjacent to a second endless train of moving dollies, each dolly in this second train supporting a basket for receiving soiled dishware and trays that a second bus boy standing in a second station positioned between the two endless trains of dollies transfers trays of soiled dishware with their trays from the tray racks to the baskets in the second endless conveyor.The trays are of novel construction and each one consists of a U-shaped casing in horizontal cross section.

Abstract: A quick hitch for animals, logs or the like in which a hitching rope is passed around the object to be hitched or tied and then has both ends extending through a cylinder. A catch swingably connected to one rope end has elongated aligned handles which straddle the cylinder end so that tightening of the other rope end draws the cylinder against the object to hitch or tie the object as to a hitching post or the like.The two aligned handles of the catch may have shoulders spaced apart a distance equal to the inner diameter of the cylinder to prevent any accidental lateral shifting of the catch with respect to the cylinder.

Abstract: A closed pressurized feed water system supplying flash steam to a lower pressure process and with no steam loss in the closed system. The flash steam delivered to the lower pressure process is sufficient to reduce the pressure in the feed water system so that a steam trap in the closed system will operate and permit the hot condensate to be returned to the boiler. Also, new make up water may be added to the system to compensate for any steam loss. In the high pressure closed system about 96.68% of the condensate is returned to the boiler and only about 3.32% is needed for new make up water.

Abstract: A removable and self sealing spray manifold that has an unobstructed cylindrical interior extending throughout its entire length. Novel self sealing and manifold supporting means is provided at each end of the manifold. The rear end supporting means for the manifold connects the manifold to a hot water inlet pipe and includes means for correctly positioning the spray nozzles for directing the hot water against the ware in the racks. The means for supporting the front manifold end includes a self-sealing cap that can be removably connected to the manifold without the need of using any tools.

Abstract: The exercising device comprises an elongated elastic cord with a foot-receiving loop formed at each end and a hollow hand grip with an axial bore extending from end to end with a longitudinally extending split permitting one or two lengths of the elastic rope to be inserted into the bore. The hand grip may be squeezed by the hand for causing the wall of the bore to frictionally grip the rope. The hand muscles are exercised by this squeezing action on the hand grip and the arm and shoulder muscles are exercised when the hand grip pulls on the rope to elongate it.

Abstract: A car wash in which sponge rollers are used and are yieldingly held against the top and two sides of the vehicle and are positioned in the car wash after the vehicle has been washed. The sponge rollers are compressed against the top and sides of the vehicle and will absorb the water film remaining on the vehicle. A vacuum shoe contacts each sponge roller and vacuum is used for removing any fluid in the sponge roller as the cylindrical surface of the roller moves under the shoe. The fluid withdrawn from the roller is conveyed to the sewer.

Abstract: Twin electric sockets for an electric outlet box in which three electrodes are mounted in each socket and three bus bars electrically interconnect the electrodes in one socket with their associate electrodes in the other socket. A common base supports both sockets and it has two slots for removably receiving two of the bus bars. The ends of these two bus bars are bent so as to extend upwardly in the two sockets and these upturned ends receive their associate electrodes and make electrical connection therewith when the electrodes are mounted in the sockets. The third bus bar is inserted into a longitudinally extending slot in the base by means of an opening in the base that is in registration with the longitudinal slot. This third bus bar as an integral loop at one end for receiving an integral tongue on the third electrode when it is inserted into its associate socket. The opposite end of the third bus bar is frictionally engaged by an electrode in the other socket that has an integral yoke.

Abstract: A portable apparatus for blowing a chemically treated cellulose insulating material into an attic, wall cavity or wet spraying the material against a surface for insulating it. The apparatus breaks the cellulose material into small particles and, after fluffing the material, the apparatus meters and feeds the material under pressure through a hose and out through a nozzle where an operator can point the nozzle for directing the material to any desired area. Three different nozzles are used: one for attic insulation; a second for filling wall cavities; and a third for wet spraying the material against a surface for causing the material to adhere to the surface.

Abstract: A dishwasher using steam to heat cold wash water and to propel the heated wash water through a spray arm mounted in a dish containing compartment for washing dishes for a predetermined time period. A detergent liquid is added to the wash water and the entraining action of the steam in withdrawing wash water from a tank underlying the compartment is also used in withdrawing a volume of detergent from a source of supply and delivering it into the wash water. The steam from a boiler is also used to heat cold rinse water delivered to the tank after the wash water has been drained therefrom and to propel this heated rinse water through the spray arm for rinsing the dishes after a predetermined time period. A sterilizing liquid and a rinse aid are added to the rinse water at the start of the rinsing cycle.

Abstract: A mathematics device in which 100 cubes are arranged in parallel rows with 10 cubes in each row and rotatably mounted on a supporting rod. A rectangular frame encloses all of the cubes and supports the rods. Each cube has four peripheral faces, each face having a different color and having numbers thereon for use in adding, subtracting, multiplying, dividing and improper fractions. Also, the two sides of the frame are numbered from 1 to 10 to represent the rows of cubes while the two ends of the frame are numbered from 1 to 10 and the cubes in each row are aligned under these numbers into ten columns. Spacing members are mounted on each rod and positioned between adjacent cubes and markers are provided to be removably mounted on the rods and between adjacent cubes and are used in solving various mathematical problems.

Abstract: A low temperature conveyor rack-type dishwasher in which the ware-carrying racks are step-wise advanced through a scrapper module, a ware washing module and a rinsing and sanitizing module. The rinsing module has two compartments. In the first compartment fresh hot water at 140.degree. F., is sprayed onto the ware to wash off the detergent from the wash water. In the second rinsing compartment a predetermined volume of sodium hypochlorite is mixed with fresh hot water at 140.degree. F., for rinsing and sanitizing the ware. A tank is provided under each rinse compartment and the overflow from the second compartment is fed into the tank of the first compartment and the overflow from this tank is conveyed back to the scrapper to remove food soil from the screens in that module and to add fresh hot water to the tank underlying the scrapper.

Abstract: A combination smoking device and a lighter for the smoking material in which the combustion area for the smoking material has a mouth piece swingable from an inoperative position into an operative position and in which an auxiliary supply of smoking material includes a valve that may be opened for placing the auxiliary supply in direct communication with the combustion area for replenishing it with a fresh supply of smoking material. Also, a smoking material lighter is positioned adjacent to the combustion area so that the operator can fill the area with smoking material and then ignite a wick and swing the mouth piece into operative position and suck air therethrough for creating a down draft in the combustion area for causing the flame from the ignited wick to ignite the smoking material. A hinged cover may now be closed for extinguishing the wick flame, the cover having air passages for supplying sufficient air to the combustion area for maintaining a continuous burning of the smoking material.

Abstract: A commercial dishwasher having a wash/rinse compartment for receiving dishes and a tank below the compartment for receiving wash or rinse water after a motor driven impeller has circulated the water from the tank and has forced it through spray arms in the compartment employs the suction created by the impeller for removing a detergent from a container in timed sequence by an entraining action during the wash cycle and mixing the detergent with the wash water during the dishwashing cycle. This same suction created by the impeller is employed for simultaneously removing a sanitizing liquid from a container and a rinse aid liquid from another container and mixing these two liquids with a rinse water during the rinsing and sterilizing cycle in timed sequence.

Abstract: A toy aircraft fighter including a space craft removably supported by a manually actuated turntable and in turn supporting a fighter airplane that may be removed from the space craft. A transparent landing apparatus for the space craft has movable elevator enclosed in an elevator shaft and a string is connected to the elevator to permit it to be manually raised and the elevator moves downwardly by gravity. A pivoted ramp is positioned at the bottom of the elevator shaft with suitable cables being provided for swinging the ramp from operative to inoperative position.

Abstract: An electric outlet box containing twin electric sockets in which each socket has electrodes and means for clamping the bare wire strands of the wires into electrical contact with their associate electrode. Also, the wire clamping means includes socket positioning pins mounted in the electric box and these pins are received in bores provided in extensions on the members that clamp the bare wire strands to the electrodes. The extensions contact a wall of the box that supports the pins and the cover for the box contacts the twin sockets and forces them against the same box wall and in this manner the twin sockets are secured in place and at the same time the bare wire strands are clamped in electrical contact with their associate electrode.

Abstract: A converter plug with improved self-locking terminals that are adapted to interlock with the terminals on a standard electric plug when the prongs of the latter are inserted into openings in the converter plug and the standard plug is rotated through an angle with respect to the converter plug for causing its prongs to interlock with the converter plug. Novel means is provided in the converter plug to prevent the displacement of the electrodes therein when the electrodes on the standard plug are inserted into openings in the converter plug and the standard plug is rotated with respect to the converter plug for causing its terminals to interlock with the terminals in the converter plug.

Abstract: A game of skill in which one or more runways for ball bearings are provided and are covered by a transparent shield and the object of the game is for the player to move the carriage to cause the magnet to attract a ball bearing and move it along the runway as rapidly as possible. The runway is a groove which is open at each end of the shield. In order to place the ball bearing in the groove, the player moves the carriage, which has a ball bearing magnetically attached thereto, toward the open end of the groove. As the ball bearing is moved into the groove, a beveled edge of the shield causes the bearing to be pried loose from the carriage, and drop into the groove. The skill factor of the game can be changed by moving the magnet in the carriage toward or away from the shield and thereby vary the magnetic attraction between the ball bearing and the magnet.

Abstract: An electric plug in which novel cable securing means is used for anchoring the cable to the plug so that any pull on the cable will prevent the cable from being pulled free from the plug and will also prevent the three wires in the cable from being accidentally disconnected from their associate electrodes. The electric plug has three electrodes with portions projecting beyond the plug, these portions being hook-shaped and designed to enter three openings in an electric outlet box, the plug being rotatable through an angle for securing the plug to the box.

Abstract: An electric plug that has a retractable ground terminal in addition to the customary two terminals. Novel means is used for electrically connecting the three wires to the three terminals without the need of screws functioning as binding posts between the wires and the terminals.