Abstract: A material spreader for spreading large rock over a wet concrete or other surface utilizes a pair of hoppers which are driven back and forth on a bridge support spanning the surface. A gasoline engine mounts above the hoppers and furnishes power for a reversibly-controllable hydraulic hopper drive motor. The rock is dispensed by a rough-surfaced hydraulically motor driven cylinder with the discharge opening being controlled by a pair of spring-loaded gates which position themselves in response to the size rock being spread and the direction of travel of the spreader.

Abstract: A cylinder head removal tool is provided for removing the cylinder head from the engine block of an engine of the type used in a Fiat Model 128, 1300, 1500, or X-1.9. The tool comprises an elongated bar made of tool steel with means for bolting the bar to the cylinder head and for mounting pusher bolts which can be tightened down onto exposed threaded ends of frozen studs holding the cylinder head. As the bolts are tightened down onto the studs the cylinder head is gradually lifted upward free from the studs.

Abstract: An automatic trailer hitch assembly mounts a shank unit on the trailer and a receiving unit on the towing vehicle. The shank unit provides an elongated shank member which mounts a trailer ball at one end coupled to a conventional trailer hitch ball socket housing secured to the trailer and at the opposite end is formed to slide on funnel-like guide passages into the receiving unit. A leveler assembly is mounted on the trailing end of the shank unit, releasably grasps the ball socket housing utilizing unsupported weight of the shank unit to establishing the grasping force and retains the shank unit properly positioned for coupling. The leveler assembly automatically releases as the shank unit enters or becomes fully coupled to the receiving unit.

Abstract: An outlet box (the term "outlet box" is also intended to encompass a junction box) mounting bracket useful for mounting an outlet box has slots to accept the shanks of outlet box mounting screws to eliminate the necessity of removing the screws when assembling the outlet box to one side of the bracket and a dry wall ring to the opposite side of the bracket. The bracket has an L-shape with right angled plate portions at one end, one of which plate portions is adapted to serve as a stiffening arm between the walls. At the opposite end, another flat plate portion is adapted to be secured to an extension plate in turn secured to a stud. In one embodiment, a recessed plate portion between the ends of the bracket contains the mentioned slots around an opening which registers with the interior chamber of the box and brings the outer surface of a dry wall ring in the same plane as the front outermost plane of the bracket.

Abstract: Dental work such as in fillings, restorations, crowns and tooth glazing is assisted by use of a flourescent compound as the dental composition. The compound is made up of a rare earth chelated flourescent compound incorporated in microbeads which in turn are incorporated in a conventional composition. Observation of the site under ultraviolet radiation enables precise location of the site boundaries as excess material is removed or as the site is observed for wear after a period of time.

Abstract: Improvements are described for the type of trash collection apparatus mounted on a side-loading trash collection vehicle of the type in which a container carriage moves up and down on vertical guide rails. The improvements comprise providing pairs of guide rails on each side of the carriage with one set of guide rails being entirely vertical and the other set of guide rails having upper end portions which are curved towards the receptacle into which the container is dumped. An improved apparatus for slowing the speed of and stopping the carriage at the end of its upper travel to ensure proper orientation of the carriage wheels during return of the carriage to the ground position is also described.

Abstract: A conventional animal cage for housing experimental animals comprises a standard small animal shoe box with a filter bonnet modified with an auxiliary disposable sterile filter connected to a source of pressurized air so as to permit a forced circulation of air through the sterile filter and through an air filter sheet in the filter bonnet so as to permit only the exhausting of gases from the chamber.

Abstract: A method and apparatus are provided enabling a magnetically-responsive substance to be contained in a well formed in a non-magnetic material and viewed through a light microscope while subjected to a magnetic field established either by an electromagnet or permanent magnet source. After the observation, the invention also provides means for preserving the observed specimen on a coverslip used to form the well.

Abstract: A substantially-rigid telephone jack frame is formed of one piece of metal with a flanged face plate and ribbed arms for supporting the spring platform. The platform itself is formed with sides conforming with the shape of the inner surfaces of the arms to facilitate use of projection welding and to achieve added rigidity in the overall jack assembly.

Abstract: A method and device for rejoining the stumps of transected cable-like structures such as peripheral nerves are based on using a flexible, inelastic sheet of material as a connector. The connector has inscribed guide-measuring lines and guide points enabling the diameter of the nerve or other structure being reconnected to be measured as well as providing a way of measuring the stump lengths to be secured and trimmed to achieve optimum results.

Abstract: A fibrous article is formed of a polymer composition which incorporates povidone-iodine and provides for its sustained release.

Abstract: A dumping mechanism for lifting, rotating and dumping a waste receptacle of the type having a pair of vertically-spaced upper and lower support bars embodies an upwardly-rotatable face plate having an upper hook for engaging the upper bar of the waste receptacle, a latch member slidably mounted on the rear of the face plate with a lower hook for engaging the lower bar of the waste receptacle, a lever arm linked to the latch member and having one end pivotally mounted on the back of the face plate and an opposite end with a roller for engaging a fixed cam, a hydraulic motor supported between side plates appended to and extending rearwardly from the face plate and arranged for rotating the side plates and in turn the face plate about the motor shaft axis and means for energizing the hydraulic motor such that the face plate can lift, rotate and dump the container and then return the dumped container to a ground position with the lower hook engaging the receptacle during the dumping operation and disengaging the

Abstract: An outlet box (the term "outlet box" is also intended to encompass a junction box) mounting bracket useful in pairs for mounting a pair of outlet boxes has slots to accept the shanks of outlet box mounting screws to eliminate the necessity of removing the screws when assembling the outlet box to one side of the bracket and a dry wall ring to the opposite side of the bracket. The bracket has an L-shape with right angled plate portions at one end, one of which plate portion is adapted to serve as a stiffening arm between the walls. At the opposite end, another flat plate portion is adapted to be secured to the front surface of a construction stud to another bracket in a piggyback array or to an extension plate in turn secured to a stud. A recessed plate portion between the ends of the bracket contains the mentioned slots around an opening which registers with the interior chamber of the box and brings the outer surface of a dry wall ring in the same plane as the front outermost plane of the bracket.

Abstract: A shoe insert in the form of an envelope which is air impervious and having a pad of cushionable material positioned in the space defined within the envelope. The envelope is provided with a predetermined number of holes of predetermined diameter through the top surface thereof to provide controlled egress and ingress of air from and to the envelope as the wearer walks thereon and thereby providing unusual shock absorption and ventilation properties to the insert.

Abstract: An insect trap particularly adapted for the entrapment and extermination of fleas comprises a flat, shallow pan adapted for resting on the floor, sticky liquid within the pan, a cover positioned over the pan, and an electrically energized green light source suspended within the cover over the pan. The fleas are lured into the sticky liquid by the light source and are exterminated therein.

Abstract: Apparatus is provided for removing an intrauterine device with a retracted marker tail or an intrauterine device without a marker tail. The device comprises a handle slidably received within a sheath and having resilient bristle means with hooks on the probing end thereof for engaging a retracted tail, or the like.

Abstract: An automatic trailer hitch assembly mounts a shank unit on the trailer and a receiving unit on the towing vehicle. The shank unit provides an elongated shank member which mounts a trailer ball at one end coupled to a conventional trailer hitch ball socket housing secured to the trailer and at the opposite end is formed to slide on funnel-like guide passages into the receiving unit. The receiving unit has a locking pin which can be latched into a position allowing entry of the shank member into the receiving unit and when the shank unit is properly positioned therein is automatically unlatched and moved into a position for locking the shank unit and receiving unit together. The locking pin when restored to the latched position enables the shank unit to be withdrawn from the receiving unit.

Abstract: An aircraft hanger structure utilizes a flexible membrane fabric as the aircraft cover and a pylon and boom arrangement which connects to and supports the fabric in a double curvature configuration. The structure adapts to contiguous parking areas of different aircraft or for closely parking aircraft of the same or different configuration.

Abstract: A shower apparatus includes a mirror mounted in a housing which forms a plenum behind the mirror. All of the shower water is made to flow through the plenum to heat the back of the mirror and thereby through convection heat the reflective front surface to prevent fogging prior to being discharged through the shower head. Rotatable coupling joints are employed to facilitate positioning of the mirror.