Abstract: An apparatus 10 for introducing a mixture of air and gaseous fuel into internal combustion engines has a housing 12 in communication with a supply of gaseous fuel that may be mounted to tubular intake ports 11 of the engine. The apparatus has a pair of control tubes 32 which adjustably extending into the housing to positions close to but spaced from the intake ports to form gaps therebetween. By repositioning the control tubes the size of these gaps may be altered to alter the air to gas mixture ratio.

Abstract: A medical examination garment 10 has a back 11, a front yoke 24, repositionable right and left breast and axialla panels 25 and 26, and a front apron 27. The left breast and axilla panel is releasably fastened along its edges to releasable fasteners 23, 34 and 28 to secure the panel in a covered position. The right breast and axilla panel is releasably fastened along its edges to releasable fasteners 21, 33, 43 and 28 to secure the panel in a covered position.

Abstract: An apparatus 10 for safely cutting cordage has central frame members 11 that defines a cord working space 17 in which a cutting blade 33 having an elongated cutting edge 34 is mounted. Spring biased blade guards 40 are mounted on each side of the blade which are movable between a position shielding the blade cutting edge and a position exposing the blade cutting edge. A length of cordage is manually cut by drawing it against the blade guards and forcing them from their blade edge shielding position to their blade edge exposing position and then drawing the cordage over the exposed blade edge.

Abstract: Folding chairs have interlocking braces 27 and 28 that prevent relative movement between chairs in a stack. The braces have offset rear stops 30 and forward lugs 31. The braces are mounted to the sides of the legs such that they prevent sideways sliding movement of another chair stacked thereon and prevent lengthwise movement of chairs of like construction stacked thereon by the brace lugs of one chair striking the brace stops of the other.

Abstract: A person toiletry case 10 has a left section 11 and a right section 12 hinged together by hinges 13. Each section has a rectangular side panel 14 bounded by a bottom wall 15, a top wall 16, 16' and two side walls 17. The top walls 16, 16' each have a recessed portion 22, 25 through which articles contained within the case may be accessed. Brackets 26, 29, 30, 31, and 33, extending from the panels 14 of the case, are provided to hold toiletry articles within the case. The case also has venting holes 18 to allow moisture within the case to escape to ambience.

Abstract: A system is described for use in controlling the position of window closures in poultry houses without the use of significant electric power in response to sensed air conditions within the house. The system includes pulleys releasibly loaded on a cable connected to a curtain which have respective weights that may lift and lower the curtain when the pulleys are released.

Abstract: Apparatus for grinding or polishing flat facets of gemstones comprising a mirror lap wheel base adapted to be mounted to a rotary drive and a lap film adapted to be mounted flushly upon the mirror lap wheel base.

Abstract: An apparatus 10 for introducing a mixture of air and gaseous fuel into internal combustion engines has a housing 12, in communication with a supply of gaseous fuel, that is mounted to a tubular intake port 11 of the engine carburetor. The apparatus has a control tube 26 which adjustably extends into the housing 12 to positions close to but spaced from the housing to form a gap 50 therebetween. A honeycomb air flow restriction plate 33 is mounted in the control tube. By repositioning the control tube the size of the gap 50 may be altered to adjust the air to gas mixture ratio. During engine operation the restriction plate creates a pressure differential that serves to draw gaseous fuel form the housing about the control tube into the airstream passing through the control tube into the port.

Abstract: A cup rack for transporting, washing, and storing cups or glasses has a frame with open ended receptacles with support members in the bottom thereof for receiving cups or glasses. The support members have projections for locating and holding the cups or glasses. Guides at the corners of the frame are adapted to locate a cover member and a superposed rack nesting therein.

Abstract: A method and apparatus are disclosed for destroying syringe needles. The apparatus has an incinerator into which a syringe needle may be inserted, crimped by a crimper 30, burned by passing an electric current through the needle between the needle tip and a sealing crimp formed by the crimper 30, and the burned needle severed by a cutter 36.

Abstract: A dish carrier 10 has a base 11, a cover 12, four stanchions 13 and flexible handles 42. The base is formed with four wedge shaped slots 34 through which the stanchions may extend. The wedge shaped slots are each straddled by track having divergent rails. The stanchions are slidably mounted to the base and rails to receive and straddle stacks of dishes of different sizes stacked upon the base.

Abstract: Apparatus for lifting and positioning mobile homes has a slide movably mounted upon a track. An elevator is supported on the slide. Hydraulic cylinders are provided for independently raising and lowering opposite ends of an elevator platform and for sliding the slide and the elevator supported thereon. A utility vehicle is hitched to the slide.

Abstract: Apparatus for detecting the level of ammonia in air comprises a conduit through which air is flowed as an airstream past two ammonia sensors that straddle an ammonia absorber. The apparatus also comprises a signal processing circuit for comparing signals generated by the two ammonia sensors with the difference representing the level of ammonia present in the air.

Abstract: A device for movement over a viscuous or liquid medium, such as a water ski, has a textured contact surface which includes the bottom and side edges of the ski. The texture is formed of shallow dimples.

Abstract: Peanut hulls are processed into dust free granules suitable for use as chemical carriers and moisture absorbent materials by being pulverized to a powder. This is done by milling the hulls through a screen having interstices no larger than 3/32 inch. The powder is then compacted into compact masses that are divided into granules and screened.