Abstract: A toy cash register principally molded from rigid plastic material and comprising a shell-like housing having an upstanding rearward portion containing a rotatable register drum having cash indicia thereon, a drawer slidable in the lower portion of said housing, a unitary cash key-simulating member mounted within an opening in a surface sloping downwardly and forwardly from said upstanding portion and depressible to actuate said register drum, a drawer release key pivoted at one side of said housing to release a latch for said drawer, and said drawer also projecting a receipt-simulating slide when moved to open position.

Abstract: A toy pistol formed by molding from relatively rigid plastic material and comprising a hollow elongated frame portion having a handle depending from one end, a composite tubular barrel and coaxial cylinder rearward thereof and of larger diameter than said barrel and supported within the frame, a piston slidable in the cylinder and having a rearwardly extending piston rod surrounded by a compression spring and having a transverse shoulder member adjacent but spaced from the piston, a trigger pivotally mounted adjacent the handle and having a sear engageable with the shoulder member when the piston is in rearward cocked position and the spring is compressed, and a simulated hollow breech slide slidable longitudinally upon the upper rearward part of the frame portion above the handle and operable when moved rearwardly to retract the piston rod and piston to cocked position to compress the spring and permit the sear to engage the transverse shoulder as aforesaid.

Abstract: A toy vehicle having a chassis supporting a pair of parallel spaced axles with wheels fixed to the outer ends thereof, a motor connected to said axles including an inertia flywheel on a shaft and gear trains extending respectively between the shaft and the axles in a manner for both axles to be driven unidirectionally simultaneously to provide a four-wheel drive, in combination with gear throw-out safety mechanism operable to remove one gear of each train from driving engagement with the trains when any of the wheels are stopped while the flywheel is still rotating and thereby prevent damage to the gear trains.

Abstract: A toy stethoscope including a flexible yoke with earpieces on the outer ends of the arms thereof, flexible tubes respectively extending along the arms from the earpieces to one end of a cylinder having a reciprocable plunger therein to produce sounds simulating natural heartbeats, another tube connected at one end to the other end of the cylinder and the other end of the tube being connected to a bellows element adapted to be manually operated to compress and release one end of the same to successively produce air pressure and suction operable upon the plunger to effect the sounds simulating natural heartbeats.

Abstract: A screw compressor including a coacting male and female rotor with respect to which a slide valve is operable to control the discharge of the compressor and also regulate the pressure of the fluid pumped or compressed thereby, the improvement comprising a limited number of different embodiments of anti-friction constructions for supporting the slide valve within the cylindrical bore provided therefor in the housing within which the male and female rotors operate, thereby minimizing the wear upon the slide valve within the bore therefor and minimizing the force required to move the slide valve.

Abstract: A toy medical monitoring unit having a housing with viewing openings for a plurality of rotatable cylindrical drums respectively having indicia-simulating pulse rate and blood pressure, bellows means operable manually to rotate said drums, a dial indicating fictitious body temperature and a reference needle movable relative to said dial and actuated by a double-acting bellows movable in one direction by blowing upon a mouthpiece on a hose connected to said bellows and the resiliency of the bellows restoring it to initial position after manual compression of the bellows.

Abstract: A container comprising a jar which has a cylindrical throat or neck and a closure including a closure body having a laterally extending circular rim of greater diameter than said neck and a cylindrical wall of less diameter than that of said neck depending from said rim and providing an annular space between said neck and closure wall, said wall having a grooved annular seat adjacent the outer end thereof, and an initially flat circular sealing gasket having an inner diameter slightly less than the innermost diameter of said seat and a thickness substantially equal to the width of the innermost surface of said seat, the outer diameter of said gasket being greater than that of the inner diameter of said neck of said jar and said gasket being disposed with the inner edge thereof in said seat in a manner to distort said gasket from a flat shape into a relatively frusto-conical shape of limited height and the outer edge extending upwardly toward said rim of said closure and outwardly a greater distance than the i

Abstract: A toy type flight simulating console for a toy aeroplane comprising a relatively small compact housing completely enclosing all operating components and mechanism except the outer ends of a simulated joystick and motor throttle lever as well as a vertical staff projecting a short distance upwardly from the rear portion of said housing, an instrument panel on the front face of said housing and the housing having a base readily adapted to be supported upon a table top, a model toy aeroplane detachably connected to the upper end of said staff and enclosing an electric D.C.

Abstract: A pull-type toy comprising a hollow body simulating an apple supported rotatably about a vertical pedestal on a base supported by pairs of small wheels and the body having a circular bottom rim engaged by a drive gear on the axle of a pair of the wheels, a bell on the interior of the body periodically rung by a clapper as the body is rotated, and flexible elongated members extending through the body and flexibly moved in bobbing manner by cam means fixedly supported relative to the base on the interior of the body as the latter is rotated while the base is pulled along a supporting surface.

Abstract: This invention pertains to a dental operatory console system including one or more fluid control valves for driving air and water to be delivered to dental handpieces supported for ready removal from a pivoted holder to provide adjustable angular positioning of the handpiece, one of such pivoted holders being adjacent each control valve and including a lockout for the valve plunger when the handpiece is removed from the holder, such as when changing burs, to prevent accidental operation of the air and water valve for delivery to the handpiece. The pivoted holder is readily removable for servicing the valve and the fluid circuit for water and air between a source of the same and a plurality of handpieces in the console includes shuttle valves to permit the use of a single air pressure gage for the system rather than a gage for each handpiece as in conventional multiple-handpiece consoles.

Abstract: An auxiliary draft device for a fireplace to produce a curtain of air discharged upwardly in front of the fireplace opening and comprising a horizontal sheet metal air-distributing shell having fixed walls and decreasing in width from one end to the other to effect a substantially even discharge of air across said fireplace opening by air discharge openings in the top wall of the shell, said shell being supported solely by a floor adjacent the hearth of the fireplace and which, at the wider end thereof, is connected to an extension shell of sheet metal which is a plenum chamber at one side of the fireplace which communicates with a horizontal conduit extending along one side of the fireplace, transversely to said chamber and extending through the exterior wall of room in which the fireplace is located and communicating with outdoor air, inlet of which is controlled by an adjustable exterior damper operable by manual adjustment of mechanism extending from said damper to the interior of said room.

Abstract: Steering mechanism for a hospital type carriage such as a mobile stretcher supported by two pairs of spaced fore and aft casters respectively on opposite sides of the same and swivelled about vertical axes, said mechanism comprising a sprocket chain or the like extending around sheaves or sprocket gears connected respectively to one pair of said fore and aft casters, one of said sprocket gears being releasably connectable to the caster upon which it is mounted selectively for rotation with said caster about the swivel axis thereof or permit free swivelling of said caster, the chain being operable to cause the pair of fore and aft casters connected thereby to either travel in a straight line or respectively swivel similar amounts in opposite directions to effect turning movements efficiently, accurately and quickly. Quick disconnect also can be made by cam means foot-actuated to permit free swivelling of all casters.

Abstract: A rotor for an axial flow combine which is adapted to coact with conventional grate means in said combine, said rotor having on the forward end thereof interrupted infeed flight means which are spiral segments spaced both axially and circumferentially from each other, and certain of the leading ends of said flight segments in the direction of rotation of the rotor extending radially a limited distance beyond the outer edges of said segments to provide aggressive engagement of said segments with crop material being delivered to said flight from conventional elevator mechanism and the like normally employed in combines.

Abstract: A toy horse supported on wheels which reciprocate and oscillate the four legs and bob the pivoted head as the horse is pulled along a surface, the horse also having a hollow body containing a noise-making unit which imitates the clip-clop noise of a trotting horse by means of a sound panel which is hit by two elongated clappers of different lengths operated by a compound type cam entity operated by at least one of the rotating wheels to strike against the sound panel in a pattern to produce such clip-clop noise.

Abstract: This invention pertains to a water recycling system for economy in water consumption by dental evacuating equipment employing a water seal type pump and includes a storage tank for waste water received from the pump, a fresh water tank above the storage tank, and an air and water separator compactly arranged with said tanks, passage means between said tanks to permit makeup and flushing water to pass from the fresh water tank to the storage tank and flush the latter through syphon mechanism, except residual seal water remaining in the pump. Conduits extend from dental evacuating equipment to the pump and then to the air and water separator to vent air to atmosphere and pass waste water to the storage tank, and an additional waste water conduit extends in gravity-flow manner from the storage tank back to the pump for recycling and economy in water consumption.

Abstract: This invention pertains to an electrical heating device for heating ceramic food preparation and serving vessels and comprises a ceramic base compatible aesthetically with a set of such serving vessels and having a central opening in the top surface associated with an annular seat which receives and supports an electrical resistance heating unit, the unit being complementary in size and shape to the opening and seat and supported therein solely by gravity for ready removal to permit the base to be cleansed while the heating unit is removed therefrom.

Abstract: A toy gun simulating an automatic rifle adapted to shoot ping pong balls and comprising a pair of complementary molded hollow shells which are connectable along a central plane to form an elongated frame having a shoulder stock at the rear end, a short cylindrical barrel at the forward end, a stationary supporting handle extending downward from said frame intermediately of the ends thereof, a magazine extending upward and rearward from said barrel to hold a limited number of ping pong balls for discharge into said barrel, a firing ram supported by guide device for reciprocation within the interior of the frame and having a ball-engaging member on the forward end and a head on the rearward end provided with a slot perpendicular to the path of movement of the ram, a crank rotatably supported by one side of said frame and connected to a support rotatable therewith.

Abstract: A woodworking machine to convert round logs to square or rectangular cants by initially cutting with initial chipping cutters pairs of adjacent grooves respectively in the opposite upper and lower surfaces of each log to form corners of said cant thereon and also form the side edges of four boards to be sawed from the log incident to forming the cant, and then delivering the log to a conveyor extending between the inlet and discharge ends of the machine and having support elements thereon complementary to the lower cant corner of said logs and additional series of guide elements above and coextensive with said conveyor which engage the upper corner of said cant on the log, whereby the log is securely and accurately held between said conveyor and guide elements during a single passage through the machine during which, downstream from the inlet end of the machine, additional chipping cutters form other pairs of grooves respectively in the opposite sides of said logs to define side corners of the cant and also r