Abstract: A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied. A logic circuit is activated to stop the lowering within an adjustable timed period after initial work engagement to provide desired penetration of the work material by the grab followed by a minimal time for grab closing to provide an adjustable constancy of loads and a positive sequential control for the lowering and hoisting modes.

Abstract: A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied. A hydraulic-electrical control is activated to stop the lowering of the grab within an adjustable timed period after initial work engagement to provide desirable penetration of the work material by the grab followed by a minimal time for grab closing to accomplish an adjustable constancy of loads as well as positive sequential control for the lowering and hoisting modes.

Abstract: A low cost liquid proportioning and mixing device of high accuracy dispensing a solution or mixture involving volume, pressure and flow rates and including a multi-stage jet proportioning and mixing device in which any variation occurring in the designed ratio of the mixture is confined essentially to the first proportioning stage operating at a low solution ratio below 1 to 5 with the pressure of free flowing solute entering the zone of confluence for each stage and the pressure of the mixture leaving the zone of confluence being essentially equal and the outflow area of any final discharge opening is possibly less but not greater than the flow area of the conduit opening from the zone of confluence of the final stage with or without a conduit used between them, the final proportion of the solution being the multiplicand of the solution proportion of the individual stages.

Abstract: The longevity and safety of pressure-responsive, flexible diaphragms is improved by providing laminated construction of sealing and reinforcing layers that "breathe" through a portion of their cross sections. In one embodiment the flexible diaphragm comprises a laminate having a layer of perforated fabric-like reinforcing material on the low pressure side and a layer of impermeable elastomeric sealing material on the high pressure side with or without an additional layer of said fabric, with or without perforations on the high pressure side and with the areas of bond between the reinforcing material and sealing material being substantially continuous. In another embodiment the laminate comprises an inner layer of perforated fabric-like material bonded to outer layers of perforated elastomeric material on the low pressure side. The elastomeric sealing material layer on the high pressure side of this latter embodiment may be perforated.

Abstract: A solution dispensing proportioner utilizing a varyingly pressurized solvent and a solute having a vagrant negative gauge pressure and a tracer that is detectable in proportion to its concentration. The proportioner aspirates the solute and tracer through a conduit, which may have metering flow valves ahead of the confluence in one embodiment, and then for a progressive check of the proportion of the solution after confluence by comparing the light transmissivity of the inflowing solute and the outflowing solution, respectively. The viewing is through windows in close proximity to each other where the relative depths of the flowing streams of solute and solution, as viewed, are substantially inversely proportional to the desired percentage of solute in the solution as corrected for a null point traverse by adjusting the solute valve to provide the ratio desired for the solute and solvent in the final solution. The tracer supply is variable to optimize the null point appraisal.

Abstract: A portable mixing-dispensing device having a manual flow control valve means between a ventable flow control chamber and a solution-proportioning chamber, and a manual feed valve between the proportioning device and a source of concentrate supplied at a negative gauge pressure, same including means to selectively coordinate the operation of the valves. The feed valve serves also as an anti-backflow check valve for the concentrate supplied under a negative gauge pressure as well as maintaining the prime thereof without dilution when concentrate is not being supplied to the mixing chamber. A translucent concentrate supply tube readily visible from above the mixing chamber serves as a visual check as to the prime of the concentrate.

Abstract: A pallet size nail having a comparatively small gauge shank whose surface is pitted with contiguous minute pits bounded by small sharply shaped wall convexities as provided by grit blasting the surface with approximately 80 mesh grit of aluminum oxide, which protuberances imbed in wood fibers and provide a substantial increase in holding power against withdrawal compared with sandblasted nail shanks, the nail preferably being spirally fluted.

Abstract: A multiple stage jet proportioning and mixing pump system in which any variation occurring in the proportion ratio of the ultimate solution is confined essentially in the first proportioning stage operating at a low ratio below 1 to 5 with initial confluence of solvent and solute at substantially atmospheric pressure followed by the primary mixture being supplied to the second proportioning operation at a pressure preferably equal to that of the solvent jet at their confluence.

Abstract: An armor window through which air, sound and sight without inversion will pass freely yet sight can be selectively obstructed and at all times the flight of a propelled element at any angle will be obstructed by at least two spaced angle iron members with the further high probability of propelled elements, including harmful liquids, being substantially and safely deflected.

Abstract: An adjustable, compact and foldable rest for supporting both arms primarily upon a seated person's knees.

Abstract: A self-contained, readily-attached electrical connector unit for fluorescent light fixtures is disclosed which hangs from and attaches to the separate prongs of a pair of single or double pronged fluorescent bulbs. The device provides a convenient means for providing auxillary power e.g., connecting extra lighting or a motor for lighted or animated displays to ceiling fixtures and eliminates extraneous wiring and brackets normally used for these purposes, and further eliminates the use of battery-powered motors with these inherent shortcomings and expense.In one embodiment a housing unit for an outlet plug and motor drive is disclosed having a pair or receptacle cups engageable over the ends of a pair of fluorescent tubes for making electrical connection to said outlet and/or motor. In another embodiment the receptacle cups are flexibly attached to the housing so as to be engageable with the prongs of variously spaced tubes.

Abstract: A cross-sectionally V-shaped, improved display sign illuminated by overhead lights and locatable at any selectable level without interference with floor level lighting in stores having different height ceilings with ceiling supported fluorescent lighting fixtures, the sign receiving substantially vertical rays of light which it deflects at a selectable determined angle approaching horizontal.

Abstract: A multiple stage jet proportioning and mixing pump system in which any variation occurring in the proportion ratio of the ultimate solution is confined essentially in the first proportioning stage operating at a low ratio below 1 to 5 with initial confluence of solvent and solute at substantially atmospheric pressure followed by the primary mixture being supplied to the second proportioning operation at a pressure preferably equal to that of the solvent jet at their confluence.

Abstract: A nail and nail clip arrangement in which so-called common nails may have their shanks grit-blasted and the edge of their heads flattened along equal parallel planes to provide a minor diametral dimension of the nail head that is approximately twice the diameter of the nail shank. The heads are alternately offset laterally in contact with each other in two rows and with the heads of the two rows alternately cross-engaging and the shanks of the nails interdigitate at an acute angle adjacent their points. The end nail at the feed end of one row extends beyond the next adjacent nail of the other row far enough for a powered driver to nip off and drive the lead nail upon actuation of the power mechanism.

Abstract: A girdle having an extra length crotch opening covered by a two-way stretch extendable brief crotch closure panel having the top of the back portion secured at approximately the waist opening of the girdle, the sides secured laterally along the girdle side seams above the leg portions and terminating in front in a short crotch flap portion which in coaction with the stretchability of the back portion can be extended forwardly over and around the crotch of the wearer to rest marginally on the pelvis and terminate in a widened end that preferably is stretched laterally and secured in front on the girdle at approximately the pelvic crest.

Abstract: A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied. A logic circuit is activated to stop the lowering within an adjustable timed period after initial work engagement to provide desired penetration of the work material by the grab followed by a minimal time for grab closing to provide an adjustable constancy of loads and a positive sequential control for the lowering and hoisting modes.

Abstract: An animated display suspended for rotation about a vertical axis carries a motor and power source that rotates a depending ribbon preferably of varying area and cross-sectional weight about a second axis eccentric to and preferably inclined to the vertical axis to attract attention for advertising in providing the illusion of a natural pouring stream of liquid, such as a beverage from a bottle as accelerated by gravity, with light reflective surfaces and coloring that adds to the illusion of the beverage expected from the bottle.

Abstract: The cabinets are equipped with elongated three-sided, flanged or webbed channels, opening downward and extending along a bottom edge. A plurality of detachable leg assemblies, having extendable feet is provided which have top plates that fit into the channels in an interlocking and mating arrangement. Holding means for each leg comprise set screws or the like that impinge against one flange of the channel and force the opposite edge or flange of the plate into the corner defined by the other flange of the channel. The legs can be inserted at intermediate or end positions along the channels at desired positions without the necessity of insertion into the open ends and sliding them longitudinally of the channels for proper placement. A modified telescoping leg assembly is also disclosed.

Abstract: A tool for temporarily holding one or both ends of a piece of wallboard or plaster-board adjacent a ceiling joist to assist in nailing or otherwise fastening the board to the joist is disclosed. In one embodiment the tool includes a right angle plate with a handle at the bottom and an inverted U-shaped flange along the top edge for engagement over a joist as the end edge of the wallboard is carried and supported by the plate. The U-shaped flange is dimensioned from the plate so as to be engageable of joists of different widths. In another embodiment the inverted U-shaped flange is adjustable so that different widths of joists can be accommodated to bring the end edge of the wallboard relatively close to the bottom edge of the joist for convenience in nailing.

Abstract: A solution dispensing proportioner utilizing a varyingly pressurized solvent and a solute having a vagrant negative gauge pressure and a tracer that is detectable in proportion to its concentration. The proportioner aspirates the solute and tracer through a conduit, which may have metering flow valves ahead of the confluence in one embodiment, and then for a progressive check of the proportion of the solution after confluence by comparing the light transmissivity of the inflowing solute and the outflowing solution, respectively. The viewing is through windows in close proximity to each other where the relative depths of the flowing streams of solute and solution, as viewed, are substantially inversely proportional to the desired percentage of solute in the solution as corrected for a null point traverse by adjusting the solute valve to provide the ratio desired for the solute and solvent in the final solution.