Abstract: A water recycling unit and system for dental operatories for use to supply operating priming water to liquid seal type vacuum pumps and including a conduit connectable to a municipal water supply, a solenoid valve in said conduit operated by a timer to open the valve for very short intervals periodically to furnish fresh makeup water to an air-water separator mounted above the level of the pumps and provided with a discharge to drain that is regulated to maintain a constant supply of contaminated water withdrawn from a patient's mouth and a small amount of the makeup water to comprise priming water delivered to the vacuum pump by gravity flow. The only moving element in the basic system is the solenoid valve and it only passes fresh municipal water free of impurities to insure complete closing of the valve and thereby obviate possible partial opening due to impurities lodged between the valve and its seat.

Abstract: A toy washing machine having a cabinet with a top opening in alignment with a tub in the cabinet and a rotatable agitator movable about a vertical axis by mechanism driven by a manually operated rack and gear train unit including one throwout gear operable when the rack is slidably moved in one direction to function with the train to drive the agitator in rotatable manner but be thrown out of operation in the gear train when the rack is moved in return direction. A flywheel also is driven by the gear train to facilitate unidirectional rotation of a rotatable member operated by the gear train.

Abstract: A spelling machine includes a housing having a row of drums on a shaft and is provided with a series of evenly spaced letters on the drums viewable through a row of holes in the housing. A row of slides in the forward portion of the machine has lugs and stop members respectively on opposite end portions. A series of cards each having a different picture thereon is inserted into the machine. Each card is provided with a row of holes spaced predetermined distances from an edge of the card which is parallel to the shaft when the card is inserted in the machine. The holes respectively receive the lugs on the slides and are operable to move the slides and stops thereon toward the drums various distances corresponding to letters respectively on the drums when the drums are rotated from starting position in one direction.

Abstract: A toy dryer having a box-like cabinet with a front wall provided with an opening for insertion and removal of items, a hinged door for the opening, a cup-shaped drum having an open end facing the opening and supported by a horizontal drive shaft in the cabinet, a slide having rack teeth along one edge for engagement with a throw-out gear of a gear train operated by reciprocation of the slide in feed direction and the throw-out gear permitting return of the slide without interference with unidirectional drive of the drum, and an extension on the slide extending through a slot in the top of the cabinet terminating in a finger-engageable operating knob by which the slide is reciprocated in driving direction and a spring effects return movement when the knob is released. The cabinet also includes interior-planar frame members which support the slide and gear train and projections and pedestal members support the frame members and effect connection of various walls of the cabinet together.

Abstract: A closed solar energy collection and storage system comprising one or more solar heat collector units in parallel, feed and return headers at lower and upper levels at the opposite ends thereof, a liquid storage tank at a level below said units, a circulating pump connected to said tank, a first conduit between said pump and the lower feed header, a second conduit extending downward from said upper return header into said tank, a return vent extending from said upper return header to the top of said tank for passage of air or gas or steam thereto from said collector or tank to receive and condense steam or vapor received therefrom and return the condensate to said tank.

Abstract: The present invention comprises several embodiments of a continuous casting machine for uninterrupted continuous production of non-ferrous metals and alloys, the machine having a pair of endless flexible mold assemblies, including mold blocks abutting each other in end-to-end relationship and each having a mold channel in one face thereof, whereby coengaging straight sections of the assemblies of mold blocks form a continuous mold cavity, extending forward and downward from the inlet end at an angle to provide desirable flow levels at the inlet of the cavity, the length of mold blocks in one assembly being preferably half the length of the mold blocks in the other assembly and indexed so that the abutting faces of the blocks of one assembly occur intermediately of the blocks of the other assembly to prevent heat dams from occurring.

Abstract: A manually operable ejector holder for a loaded capsule-like cartridge of cylindrical shape open at one end and provided with an annular flange at the open end, the other end being closed but provided with an angular discharge nipple and the holder having a cylindrical body provided with an ejecting plunger operated by a pivoted lever-type handle member. The forward end of the cylindrical body being partially cutaway in a radial direction for a limited distance longitudinally to provide a hollow seat to receive the flanged end of the cartridge and the seat having an undercut groove to receive the flange of said cartridge, and the sidewalls of the seat at the upper edges being of limited flexibility and spaced apart a slightly less distance than the diameter of the cartridge body to effect a limited snap-acting connection of the cartridge to the holder.

Abstract: An axial flow combine having a forward elevating conveyor leading to the feeder house in which beating rotors coact with stationary concave grates and also includes augers on the forward ends of the rotors to insure positive feed of crop material from the elevating conveyor to the rotors. The invention includes feed divider vanes extending in the direction of feed of the crop material from the elevating conveyor to the rotors and are fixedly positioned upon a ramp extending beneath the augers to divide the oncoming material fed to each auger into two streams to minimize the tendency for the material, such as tough long straw experienced in rice, to be formed into spiral rope-like configurations incident to being transformed from linear feed direction by the elevating conveyor to lateral spiral motion, caused by the augers, for delivery between the rotors and grates for threshing the material.

Abstract: A combine having a header on the forward end of it which operates to cut and deliver crop material to an elevator in a feeder house over which a cab is provided at an elevated location. The elevator delivers the material to the threshing mechanism of the combine. The engine of the combine is connected by a belt drive to a vari-drive supported by the feeder house and a yoke on the vari-drive moves one flange of the adjustable sheave of the vari-drive relative to the other. An auxiliary motor actuates the yoke by driving a rotatable screw and a Bowden cable is connected between a pivoted speed-indicating needle on a dial mounted in view of the cab and the follower of the yoke which is actuated by the screw which is operated to move the yoke to change the adjustable sheave and vary the speed of operation of the combine.

Abstract: A cutoff machine for non-metallic tubes comprising a pair of rotary saws in transverse alignment within a plane perpendicular to the axis of feed of tube stock incident to continuous discharge from a tube-forming machine, a pair of motors simultaneously driving said saws in opposite rotary directions respectively toward said tube stock from opposite sides, powered propelling mechanism which is fluid actuated and activated by an electric signal instigated by the forward end of the moving tube striking a target switch which originates all subsequent sequential functions of the machine by moving the saws longitudinally from and toward a starting position in opposite directions parallel to the movement of the tube feed stock, additional power mechanism operable to move said saws simultaneously toward said tube stock while said saws are advancing evenly with said stock, first control mechanism operable to effect withdrawal of said saws from said tube stock and a severed tube section prior to terminating longitudin

Abstract: A mattress assembly and system adapted for specialized use where bending is required and comprising a top pad formed of two layers of relatively soft foamed plastic between which a load-distributing mesh sheet is bonded to also secure said layers together, in combination with a bottom pad of much firmer foamed plastic coextensive with and underlying the top pad and capable of preventing the assembly and system of pads from bottoming-out. The bottom pad also is connected to the top pad in a manner to prevent relative longitudinal movement therebetween, especially when the assembly and system are bent at localized locations incident to the mattress support on a bed being similarly bent such as in hospital use and in domestic convertible sofas.

Abstract: A baseball shoe comprised of an upper shoe body, a unitary molded sole and heel affixed to the bottom of said body, metal blade-like spikes projecting from said sole in triangular pattern, and a cluster of blunt plug-like cleats molded integrally with said heel and adapted to be relatively noninjurious to peronnel or base bags when engaged by said cleats.

Abstract: A jack stand for attachments, such as the feeder house/header combination, to agricultural machines, such as a combine, is disclosed wherein the jack stand includes a supporting plate attachable to the attachment and provided with an arcuate row of holes spaced even radial distances about a pivot and a pair of telescoping leg members, one of which is pivotally connected at one end to the pivot. A bracket, spaced from the pivot at said same radial distance from said pivot as the arcuate row of holes, is affixed to one of the leg members to receive a pin passed through a selected hole of said arcuate row thereof to establish said leg members at a desired angle relative to a supporting surface. One of the leg members includes a row of transverse holes which is alignable with at least one transverse hole in the other leg member to receive a pin therethrough to establish a desired length of said leg members.

Abstract: A mount for holding a set of artificial teeth comprising an elongated plate member having a row of recesses therein complementary to the lingual surfaces of said teeth and having adhesive in shallow indentations in the bottoms of said recesses to detachably secure the teeth therein and support them in such manner that the outer surfaces of the teeth are sloped forwardly for viewing.

Abstract: An electric lamp reflector comprising a pair of similar, substantially hemispherical reflectors open at the outer ends and having inner openings coaxial with the central axis and said reflectors being nested together and uniformly spaced apart a limited distance except at the inner ends where cylindrical extensions are provided to engage each other and also fit only a cylindrical outer surface of a plastic electric lamp socket holder, the outer reflector having a circular row of holes therein spaced a limited distance from said cylindrical extension and adapted to permit circulation of ambient air to and from the inner reflector and lamp socket holder to render the temperature of the outer reflector safe to human touch.

Abstract: A saw and chipping device to convert veneer peeler logs into pieces of lumber of dimensions to produce maximum useful products and minimum waste and comprising a pair of similar sets of saws and intervening chippers on a pair of parallel power driven arbors respectively above and below a path of travel for said logs and one arbor trailing the other a predetermined distance, said saws respectively sawing said logs in common planes from opposite sides to a depth slightly greater than half the diameter thereof to form complete cuts to form adjacent boards varying in diameter in accordance with the sections of the logs in which they occur, feed rollers power driven in directions to feed logs to said sets of saws and chippers, and auxiliary guide rollers downstream from said sets of saws and chippers provided with stepped circular surfaces above and below said path of travel, the diameters of said stepped surfaces increasing in diameter from the center toward the opposite ends of said rollers in accordance with th

Abstract: A toy tethered for orbital movement and connected to one end of a cable coiled about a drum in a circular housing rotatable about one end of a hollow handle which contains a coiled torsional spring connected to said drum to yieldably resist uncoiling of said cable from said drum, the handle being held manually, and said toy having noise-generating mechanism operable as the toy is whirled about the handle through the air. One embodiment of toy comprises a toy aeroplane having a propeller supported at the front end of a shaft supported axially in the forward end of the fuselage of said aeroplane and the inner end of said shaft supporting a rotatable impeller operable against a diaphragm in said fuselage to produce a staccato-like noise resembling that of a motor.

Abstract: Crop divider mechanism for attachment to a knockdown bar of an agricultural harvesting or conditioning machine and comprising a pair of similar interchangeable left-hand and right-hand rod members bent into substantially trapezoidal shape with parallel opposite long and short sides and intervening sides sloping from said long side to said short side, pairs of bracket members attachable respectively in spaced relation along opposite end portions of said knockdown bar and each pair pivotally receiving one of said intermediate sides of said rod members, similar positioning plates respectively fixed to one bracket of each pair thereof and having several spaced holes to receive selectively one end of a positioning pin selectively to support said rod members in upstanding inoperative position or forwardly extending operative position, and supplemental flat links connected to a second plate adjacent each positioning plate in positions to engage said knockdown bar in a manner to hold said rod members no lower than in

Abstract: A manually-operable ejector holder for a loaded syringe-type cartridge having an annular collar on one end and a discharge tip on the other end and including an elongated barrel having a piston slidable therein and actuated by a fixed handle on one end of the barrel and a pivoted operating lever cooperable with the handle. The opposite end of the barrel has a curved transverse recess to receive a portion of the collar on the cartridge and a pivoted locking member has a corresponding curved transverse recess in opposition to and cooperable with the recess in the opposite end of said barrel to receive an opposite portion of the collar on the cartridge, and a sleeve is slidable over said locking member and along said opposite end of said barrel to detachably connect said cartridge to said holder.