Abstract: A controlled environment room encompassing a room space is provided with air supply structure which includes a room ceiling surmounting the room space, a top closure disposed above the ceiling and spaced apart from the ceiling to form a plenum chamber therewith, and an array of steel joists extending between and constructed and arranged to support the ceiling and the closure, the joists each including a pair of spaced apart chords which are components of the ceiling and are constructed and arranged to support the ceiling, the chords defining between them elongate slots extending through the ceiling, the slots providing air passageways extending from the plenum chamber to the room space for conducting pressurized air from the plenum chamber to the room space.

Abstract: Energy conservation structure is provided for a controlled environment room having an opening in a wall thereof through which work is passed and through which room air under pressure may be discharged from the room, thereby to prevent contamination of the room air by contaminants in outside air entering the room through such opening, the energy conservation structure including structure providing suction adjacent to the wall opening to induce the flow of room discharge air thereto, the latter structure being constructed and arranged for communication with structure and apparatus for recycling the discharge air of such induced flow to the controlled environment room.

Abstract: A paint can holder for suspending a paint can with the mouth of the can open to enable painting directly from the can, such can having a sealing rim around its mouth, includes a paint can support mountable on a ladder, the support including a collar portion to be seated on the sealing rim of the can with the mouth of the can open and covering the rim while seated thereon, the collar portion defining an opening substantially registering with the inner periphery of the paint can rim when seated thereon, a sealing ring depending from the collar portion adjacent to the opening defined thereby, for being received telescopically within the paint can rim with the mouth of the can open when the collar portion is seated on the rim, in a friction fit between the sealing ring and the inner periphery of the paint can rim, to prevent flow of paint therebetween, and structure for detachably connecting the paint can to the support for suspending the paint can from the support with the collar portion seated on the paint can

Abstract: A locomotive control simulator attachment for a model train controller having a protruding throttle control shaft reciprocally rotatable for regulating the speed of the train includes a support adapted to be attached to the controller, mechanism, such as a pinion gear and rack combination, that is engageable with the throttle control shaft for reciprocally rotating the shaft, a throttle control lever simulating a locomotive throttle, mechanism for mounting the lever on the support for reciprocal pivotal movement of the lever, and mechanism for connecting the lever to the mechanism engageable with the shaft, for operating the latter mechanism to reciprocally rotate the shaft upon reciprocal pivotal movement of the lever, whereby in regulating the speed of a model train, the lever movement simulates the movement of a full-scale railroad locomotive throttle.

Abstract: A spraying apparatus adapted for blending liquids in a gaseous spray stream includes a gas nozzle that is adapted for discharging a gas jet to be directed at an object to be sprayed, and a plurality of liquid nozzles having suction outlets adapted for removal of liquid therefrom by aspiration, the liquid nozzles being mounted for disposing them relative to the gas jet to effect aspiration of liquid from their outlets together into the gas jet for spraying an object with the resulting spray mixture, at least one of the gas nozzle and a liquid nozzle being mounted for varying the disposition of the liquid nozzle relative to the gas jet to thereby vary the rate of aspiration from the outlet of such liquid nozzle relative to the rate of aspiration from the outlet of another liquid nozzle.

Abstract: A manually operated punch and die set for making washers accurately includes a die having a series of die openings graduated according to diameter, a series of punches having cutting faces complementary to and received in the die openings for manually severing discs from sheet material and leaving corresponding graduated openings therein, a plurality of the punches each having a shank-receiving bore in its cutting face, a series of pilots having heads graduated in diameter to correspond to the diameters of a like number of graduated sheet material openings, each of the pilots having a shank joined to its head and removably received in each bore, whereby a pilot may be mounted on a cutting face of greater diameter than the head of the pilot for manual insertion of the head into a sheet material opening of corresponding diameter to orient the opening with respect to the cutting face, for severing from the sheet material an annular washer encompassing the opening.

Abstract: A platform attachment for a ladder having a pair of spaced apart sidepieces connected together by a series of spaced apart rungs includes a pair of spaced apart slideways mounted on the ladder adjacent to respective sidepieces, and a platform extending between and supported on the slideways for sliding movement reciprocatively between a working position projecting forwardly from the ladder and an out-of-the-way position retracted rearwardly from the working position. Preferred mounting structure includes a bracket connected to the slideways and engaging a rung of the ladder above the slideways.

Abstract: A slip bobber for a fishing line includes a pair of separable parts that abut on each other at respective transverse mating surfaces to form a buoyant body. The mating surface of one of the parts has a diametral groove dimensioned for slidable reception of a fishing line. An externally-threaded post projects outwardly from this surface and has a longitudinal line-receiving slot extending transversely through the post and in register with the groove. The mating surface of the other part includes an opening in register with the post and dimensioned for receiving the post in threaded engagement for bringing the parts into abutting engagement. A resilient flexible wall preferably provides the latter mating surface and is stressed to enhance engagement and resist separation of the parts.

Abstract: A shim for insertion between the base of a machine and a support for the machine to adjust the spacing therebetween, which machine and support are secured together by bolt means extending between the base and the support, includes a body portion and a pair of leg portions integral with the body portion and extending forwardly therefrom to a front end of the shim. The leg portions define between them a bolt-means receiving slot extending rearwardly from the front end of the shim. Each of the leg portions has a front edge at the front end of the shim, which is inclined inwardly toward the slot and rearwardly. When the shim is inserted between a machine base and a support, and advanced toward bolt means extending therebetween, engagement of either one of the front edges of the leg portions with the bolt means causes the shim to move into a position of alignment of the slot and the bolt means for reception of the bolt means in the slot.

Abstract: Body-building apparatus includes an upstanding frame, a chin bar adjustably mounted on arms extending forwardly from the frame adjacent to the top of the frame, a pair of dip bars each including a rear portion, and a front portion extending angularly from the rear portion, and adjustably mounted on the frame with the front portions projecting forwardly therefrom, a forward weight-cable pulley assembly adjustably mounted on elongate support means extending forwardly from the frame adjacent to the bottom thereof, equipment-mounting brackets disposed along each of a pair of frame uprights, each bracket including a retainer and a pair of legs extending laterally from the retainer and rearwardly with respect to the frame in vertically spaced-apart relation to each other, the legs of each bracket being reciprocally movable on an upright for corresponding movement of the bracket between a forwardly extending equipment-mounting position and a rearwardly retracted collapsed position, and stop structure associated with

Abstract: A key is an assembly of a thermoplastic handle and a blade, which are formed separately from each other. The blade is substantially flat, and includes on each of its opposite sides a plurality of parallel longitudinal lands having forwardly-facing bittings thereon, and a plurality of parallel longitudinal grooves which alternate with the lands and space them apart. The bittings serve to engage transverse rows of axially reciprocatable tumblers in a cylinder lock, and the grooves receive lock wards therein, while the distal end of the blade engages the lock to determine the depth of insertion of the key blade. The blade also is provided with a capture pin opening, and with a proximal end structure which cooperates with the handle in assembling the key. The blade is made from a length of bar stock which is rolled in order to form lands and grooves on the sides of a flat strip.

Abstract: An anti-slip wooden handle for a hand-held striking tool, and a method of making the same, embody the provision in the handle of grooves formed in a gripping surface by die-pressing at high temperature, so as to minimize slipping of the handle when in use, while also minimizing hand irritation.

Abstract: A game set includes a plurality of individual game articles, with each article including two companion playing pieces. The pieces mate with each other, but not with the pieces of other articles in the set, to form the article. The pieces of each article are separable from each other, for playing a game of seeking to mate the companion pieces of the article. In a preferred embodiment, a signal device is included in each article and is actuated by assembling the playing pieces into the article.

Abstract: A machine for cutting flat keys having extending tumbler-receiving recesses includes a mount for a key blade blank, a mount for a cutter, mechanism mounting the blank mount and the cutter mount for movement relative to each other for cutting a longitudinal tumbler-receiving recess in a blade blank mounted on the blank mount with a cutter mounted on the cutter mount, and mechanism mounting the blank mount and the cutter mount for adjustment of their relative positions to adjust the position of the cutter transversely with respect to the blade blank, whereby a plurality of tumbler-receiving recesses may be cut in the blank thereacross. A holder for the blade blank is pivotally mounted on the blank mount for 180-degree rotation about the longitudinal axis of the blank, whereby the recesses may be cut in opposite sides of the blank.

Abstract: A transparency to be imaged as a copy sheet in plain paper copiers includes a transparent sheet having a surface adapted to receive an image imprinted thereon in the copier, and an opaque coating forming an opaque border completely around the sheet.

Abstract: A picking tool adapted to open a cylinder lock of the axial pin tumbler type having its tumblers arranged in a coplanar configuration, includes a planar torquing core insertable into the lock keyway in a longitudinal direction, a plurality of longitudinal guideway channels formed on opposing faces of the core, and respective tumbler probes longitudinally reciprocable in the channels. A holder, which acts as a handle for manipulating the picking tool, also serves as a housing surrounding the core and the probes. The holder is formed with a pair of radial openings in opposite sides thereof which receive respective brake segments for exerting a frictional drag on the probes. An adjustable hoop clamp surrounds the brake segments for manually adjusting the frictional drag, so that the proper tumbler displacement action can be achieved. Setscrews are threaded into the body of the holder for clamping the probes in their final tumbler-displacing positions.

Abstract: A transparency for the formation of an adherent electrostatic image thereon includes a polyester resin film sheet having an image-receiving coating of nitrocellulose, a plasticizer, a particulate material, and, preferably, an antistatic agent. The coating is applied to the film sheet from a solvent mixture of an aliphatic ester or an aliphatic ketone, and an aliphatic alcohol.

Abstract: Method and apparatus for supplying individually to a processing station, such as a banding station, metal coils which are provided in groups of adjacent side-by-side coils, the groups of coils being placed on a conveyor line in following order with the coils in each group stacked vertically, conveyed to a separating station in turn, and destacked by mechanically lifting from the top of each group, carrying forwardly, and depositing on the conveyor line at a depositing station individual coils of the group successively, while the group is stationary, and the deposited coils being conveyed forwardly towards the processing station. Following groups are accumulated on the conveyor line in advance of the separating station while a group of coils is stationary on the separating section for destacking thereof.