Abstract: A compound bow includes improved low-rotation cam members eccentrically mounted upon the bow limp tips and each provided with an enlarged main body section, a reduced width intermediate section and an elongated terminal section generally defining an irregular kidney-shaped profile. A single cable groove or track extends continuously around the entire periphery of each cam and is disposed in a single vertical plane such that any stretch of cable extending between the tracks of the two cams will be substantially aligned with the bow center line. A single continuous cable stretch, having its opposite ends respectively joined to a bowstring and a tension cable, is sheaved about the track of each cam and is adjustably anchored thereto by means of a removable, lockable, rotating keeper whereby fine adjustment of the bow may be achieved without disassembly or removal of any cable lengths from the bow cams.

Abstract: An enclosure for the end opening of a vehicle having one or more interior elevated decks includes a pair of door assemblies each comprising a plurality of pivotally joined panels. The door assemblies are suspended in a vertical manner by means of hanger assemblies having tracking elements guided within a rail member disposed above the level of a vehicle elevated deck. Transverse movement of any panel concurrently displaces the entire associated door assembly, as a unitary articulated assembly, between a closed position sealing off the end opening, and an open position with the door assembly well-spaced from a lateral edge of the deck, in which latter position maximum lateral clearance is provided for lading carried by all decks or levels.

Abstract: Several electrodes (20) are movable respective to several groups of electrodes (11 to 18). The latter receive, from modulating devices (28) modulation voltages which induce a voltage into the electrodes (20). The induced voltage is amplified in (21) and demodulated by a synchronous demodulating device (22) guided by an oscillator (23). The comparator (24) controls a binary counting device (25) the state of which constitutes a direct measurement of the relative position of the electrodes. The low-level outputs of counting device (25) govern a digital-analogical transformer (26) which delivers a modulation voltage to a function generator (27).

Abstract: An irrigation system in which a main channel is connected to a series of irrigation bays by separate distribution channels and the flow of water to each bay is controlled centrally in response to the moisture content in each bay. The bays are irrigated in sequence by a central control system.

Abstract: U-shaped forms (1a) are cut in a band (1) consisting of electrically conductive material, which free cut the future measuring elements (1c) except for a connection at one side with band (1). The band (1) is placed on an insulating base (2) and connected with it. The band (1) is then cut along lines A and B, to provide individual electrically conductive elements (3a) arranged in succession and isolated from the teeth (3b) of the cut band (3). The thus produced scale can be reinforced by application of a carrier band (5).

Abstract: The valve consists of a closing device (7) pushed by a spring (8) to press the sealing face (9) against its seat (13). The closing device (7) can only be moved by action on the handle (18) provided the magnetic core (32) is attracted to the left, to enable the rod (35) to move the part (26) against the opposing action of a spring-loaded (39) bush (38). When the handle (18) is then operated, the rod (20) moves the part (26) downwards, which in turn presses down the rod (30) and allows the spring (8) to move the closing device (7) downwards. The part (26) is then locked by the engagement of its lip (42) beneath the end of a pin (40). If the excitation current is interrupted, the core (32) and the part (26) return to their original position, which releases the moving part (26) and the rod (30).The spring (31) then returns the closing device (7) to the position illustrated.

Abstract: A plastic film dispenser comprising a support structure consisting of a housing (1), support means (26) for a roll of film, guide means in the form of a fixed flap (36) and a moveable flap (37) to guide film from the roll to an outlet (27). The housing is provided with a drop plate (34) moveable from a position where film being withdrawn is maintained clear of treated film severing means (41) to a position where film is contacted by the severing means. The housing preferably includes means (25) to support a roll of other material and a keeper rod (18) whereby a length of such material may be conveniently withdrawn from the roll and severed by severing means (12).

Abstract: A transportable self-contained sewage treatment plant includes an outer shell containing a plurality of adjacent chambers having pipes or lines providing a serial flow of fluid therebetween. An aeration chamber delivers biologically treated wastewater to a clarifier chamber which returns both heavy as well as lighter, floating particles to the aeration chamber while passing the remaining wastewater to a filter chamber for passage through a filter bed. The resultant treated fluid next passes into a backwash chamber before discharging as clean water from the plant. The filter bed in the filter chamber is periodically backflushed by applying a pressure head upon the clean water in the backwash chamber to direct the water in a counterflow manner through the filter bed while at the same time this pressure head closes check valves both to preclude discharge of clean water from the plant and to direct backflushed water to by-pass the clarifier chamber and enter the aeration chamber.

Abstract: A panel (1) is mounted on a frame (2) which in turn is mounted on a pivot (3) disposed parallel to the longitudinal axis of the panel (1). Jacks (4) connected to the frame permit tilting the panel (1) which constitutes the tennis court. In this inclined position of the panel (1), rainwater will not accumulate on the court and the court can be reused as soon as the rain ceases to fall.

Abstract: The mechanism comprises two toothed rotary bodies (1,2) sensitive to the gyratory centrifugal force of the projectile. The rotary bodies (1,2) mesh with each other. The body (1) simultaneously meshes with a toothed pinion (9) the shaft (10) of which carries, for example, the escapement wheel of a delay device having a balance of the fuze. The rotary bodies (1,2) conjointly develop a substantially constant driving couple which is the resultant of positive driving couple of one of them and of a negative braking couple of the other.

Abstract: A method for producing a stable commercial-scale size batch of a stannous fluoride containing gel comprising admixing predetermined, critical proportions of the ingredients of the gel at critical temperatures in stages designed to stabilize the gel against deterioration in storage.

Abstract: A portable step assembly for attachment to a tree or pole includes a generally L-shaped climbing member and a separate, headed fastener member. The fastener member is removably insertable through a mounting portion on the climbing member after which the climbing member is employed as a crank tool to drive the fastener member into the tree. A specially configured socket recess or cavity within the mounting portion captively receives the screw member head and serves two primary purposes. First, it allows a one-handed push upon the assembly during the initial drive of the fastener member and secondly, dual sets of shoulders within the socket cavity form positive abutments to screw or unscrew the assembly respectively during its attachment or removal from a tree.

Abstract: The electronic fuse for a projectile comprises a radar emitter (2) having a resonant cavity (1) and a directional antenna (3). The presence of foreign bodies in the radar beam produces a Doppler effect which is detected by a circuit (5). This circuit (5) controls the modulation of the radar beam by means of two VHF oscillators (F.sub.1, F.sub.2) and the influence of the foreign body upon the modulated radar signal is analysed by the circuit (5) to determine if the foreign body corresponds to the target of the projectile or whether they are foreign bodies located accidentally on the trajectory of the projectile, for example, birds, droplets or micro-droplets of water. When the circuit (5) detects a signal corresponding to a motionless body of large dimensions, or a land, water or snow surface, it causes the firing of the projectile at a predetermined distance from the object.

Abstract: A pivotal rod, in the form of a flat bar, extends through an axial bore of a sleeve, pivotally mounted on a sliding carriage. A coupling member connecting the rod to the sleeve comprises a slide pivoted on the sleeve around a pivotal axis perpendicular to the axis of rotation of the sleeve and sliding along the rod. The coupling member includes three ball bearings, two of which bear on the edges of one of the surfaces of the flat bar and the third bears against the other surface in the longitudinal axis of the flat bar. The bearings are mounted on pivots oriented parallel to the pivotal axis of the coupling member. This mechanism ensures an angular coupling without play between the rod and the sleeve and is usable even when the displacement of the rod or the trajectory of the carriage or their parallelism to each other is not perfect.

Abstract: A retractible leg rest for an aircraft chair which is stowed beneath the seat when not in use. The leg rest is mounted on a platform attached to an articulated frame mounted beneath the chair. The reticulated frame includes two quadrant plates which are pivoted at their centers about a horizontal bar extended beneath the front of the seat. The platform quadrant plates are connected by linkage arms and link members so that when the platform is drawn outward from beneath the chair, the quadrant members are swung upward by the link members and the linkage arms elevate the rear of the platform along an arcuate path which passes clear of the front of the seat of the chair so that the leg rest is brought into leg-support relationship with the seal of the chair. The angle of the leg rest to the seat is adjustable by means of an array of notches with quadrant members.

Abstract: A rotatable pontoon includes a floating cylinder provided with watertight compartments and having a hollow interior for receiving one or more vessels adapted to be overturned by rotation of the pontoon. Rotation is achieved by either external power or by successively displacing water from one compartment to another. An external platform attached to the pontoon maintains a normal upright position during rotation of the pontoon and serves to contain accessory equipment. Alternatively, this equipment is attached to a belt surrounding the pontoon and fastened to stationary flotation tanks. Floating roofs are included to allow operation during rainy days and for removing load fractions remaining after a vessel is overturned, pushing panels and helicoidal hatch-feeders are provided.

Abstract: In a pressurized-fluid operated steering gear system for a ship of the kind in which a plurality of actuators (piston-and-cylinder or rotary vane) are disposed in opposed pairs to turn the tiller arm when a diametrically opposed pair is pressurized and the other diametrically opposed pair is relieved of pressure the improvement that there is located in the cylinder, or arcuate chamber, of each actuator a free moving member which separates two distinct pressurized fluid inlets of said cylinder or chamber. If there is no pressure delivery from one inlet the member moves to one end of the cylinder or chamber so that the actuator is worked by pressure solely from the other inlet.

Abstract: Installation for cleaning painted parts comprising a treatment chamber (1) in which the painted parts to be cleaned are exposed to jets of hot water-miscible, cleaning solvent. The installation also includes separating means (7, 8, 14, 18) for the light paint solvents, the cleaning solvent of the paint, the water cleaning solvent, and the gas cleaning solvent, with a view to recycling the cleaning solvent.

Abstract: A partition assembly includes post cover plates for masking the lower portion of vertical, round posts disposed intermediate a plurality of elevated panels. The upper section of each post cover plate includes an arcuate segment having a curvature substantially mating that of the vertical post cylindrical walls while an attached lower section on the post cover plate is provided with an outer wall having lateral edges substantially aligned with the plane of the outer faces of the adjacent panel or panels. The post cover plates are installed with the lower sections disposed below the plane of the panel bottoms and are retained in position by the engagement of grooves adjacent the lower section lateral edges and the juxtaposed end edges of panel cover plates mounted beneath adjacent panels.

Abstract: A railroad car as a chassis of two parts and which are connected together by a coupling device. By lifting one end of the chassis by jacks it is possible to remove a railroad type truck and replace it with truck fitted with wheels and tires. The coupling is then opened and each half of the railroad car can be converted into a semi-trailer connected by means of a pivot to a tractor truck.