Abstract: A light weight door for a caravan is made as a sandwich from two panels with an infilling of a wooden frame consisting of rails and stiles which are not jointed together, and with blocks of expanded polystyrene filling the spaces between the rails and stiles, these blocks being initially thicker than that of the wooden frame parts, and all of the parts being bonded together so that the blocks become compressed. The bonding makes the door concave convex at the latch edge but planar at the hinge edge. The door has rounded corners.

Abstract: An anti-theft device for a vehicle that is movably mounted on wheel carriers, for securing the vehicle against theft of wheels and against unauthorized towing, which comprises an alarm switch and an actuating member, one of which is mounted in a fixed position relative to the vehicle, and the other of which is mounted to move with one of the wheel carriers. The actuating member is arranged to actuate the switch, and has sufficient lost motion relative to the switch to accommodate normal relative movement of the vehicle and the wheel carrier during travel of the vehicle. The switch is actuated by relative motion of the switch and actuating member in excess of lost motion when the vehicle is raised for towing or for removal of a wheel.

Abstract: A packing element for a fluid-fluid, fluid-solid, contacting de-entrainment or reaction apparatus is made from wire using two or more parallel wires which are loosely twisted together, the twisted bundle then being wound into a helix, and the helix then being twisted about a second pair of heavier gauge wires which form a core, so that the individual loops of the helix are spaced helically about the central core, the individual wires being slightly separated from one another to form gaps which can be bridged by a liquid, and encourage capillary flow so as to wet the whole of the packing area.

Abstract: A mouth corner spreader used for spreading both corners of the mouth for facilitating medical examination, treatment, photographing or other works in the mouth. The device comprises a pair of hook structures arranged in opposed relation to each other and designed to fit to the mouth corners, each of said hook structures consisting of a substantially C-shaped external portion, a substantially C-shaped internal portion provided spaced-apart from said external portion and a joining portion joining said external and internal portions along the inside edges of the C-shaped portions, and a substantially U-shaped elastic spring arm connecting said pair of hook structures.

Abstract: This invention relates to filter presses of the kind comprising a plurality of separate filter plates which are supported by or from a main frame so as to form a stack at one end of the frame during a filtering operation, and which are arranged to be moved one by one towards the opposite end of the frame to enable filter cakes to be removed from between the plates.The plates are heavy and tend to stick together, and known mechanism for moving the plates individually is either complex and tends to clog with the clay or like being filtered in ordinary usage, or fails to take account of the sticktion resulting in the press jamming.

Abstract: A rotary tubular kiln and a preheater for material supplied to the kiln are connected by a duct leading from one end of the kiln, for conducting waste gases from the kiln to the preheater. A bypass conduit is connected to said duct for diverting part of said waste gases and extends from the duct in such a direction as to divert a stream of waste gases at an angle of at least 90.degree. to the stream of gases flowing through the duct. An upright mixing chamber is connected at its bottom to said bypass conduit to cause said diverted stream of gases to flow upward through said mixing chamber. The mixing chamber has in its lower portion at least one lateral inlet for introducing cooling air into said diverted stream of gases, and the distance between the axis of said duct and a point on the axis of said mixing chamber at the level of said inlet is from 1.5 to 3 times the square root of the quotient of the cross-sectional area of the duct divided by pi.

Abstract: A drawer assembly comprising back and side wall panels of extruded construction each comprising upper and lower hollow sections interconnected by a web defining a longitudinal recess which, in the drawer side wall panels, is adapted for engagement with drawer runners mounted in a cabinet or the like in which the drawer is to be supported in use, the wall panels being interconnected at right angles to one another by corner pieces having projections engaging in the open ends of the upper and lower hollow sections of the panels, and stop devices slidably mounted on said web at opposite ends of the back panel for movement between retracted inoperative positions in which the stop devices are clear of the longitudinal recesses of the side wall panels and extended operative positions in which portions of the stop devices project across said recesses for engagement with abutment members carried by the drawer runners.

Abstract: A device for use with fork-lift trucks or the like to provide tipping and side shift facilities for ancillary apparatus attached to the truck. The device includes first and second frames and a sub-frame with two operatively connected fluid-powered rams. There is one mounting point for an ancillary on the sub-frame and an alternative mounting point for an ancillary on the second frame, whereby an ancillary so mounted may be tipped and/or side shifted according to which ram is operated.

Abstract: A supply system for a pneumatic weaving machine, comprising a pressurized air container connected to a pressurized air conduit through a main control valve, a main blowing nozzle and a number of (groups of) auxiliary blowing nozzles, which are each connected through a control valve to the pressurized air container, whereby the blowing nozzles are together connected with an auxiliary supply conduit, which is adapted to be selectively used.

Abstract: A drawer having longitudinal tracks formed in the opposite side walls thereof and a pair of guide members mounted at the rear corners of the drawer and movable between retracted positions in which the guide members are clear of the rear ends of the associated tracks and operative positions in which the guide members extend across the ends of the respective tracks, the guide members being adapted to engage with respective drawer runners mounted in a supporting structure in which the drawer is supported in use to support and guide the rear end of the drawer on the runners.

Abstract: A pumping system for pumping liquid clay or slip into a filter press comprises a hydraulically-powered double-acting ram for pumping the slip and a hydraulic control circuit for the ram. The control circuit includes a pair of hydraulic pumps one of which provides a high pressure, low volume delivery and the other of which provides a low pressure high volume delivery, and valves controlling the supply of oil from these pumps to the ram according to the resistance encountered by the ram.

Abstract: An electrical string-instrument having a plurality of conductive strings, a support member stretching the strings, electromechanical transducers respectively corresponding to the strings, magnetic field generating means for generating a constant magnetic field to cover therewith the strings, an electrical circuit for producing feedback signals from the outputs of the electromechanical transducers, and feedback signal supply means for supplying the feedback signals to flow feedback currents in the strings, and vibrate continuously in cooperation with the magnetic field.

Abstract: A plate type punching machine in which sheets of paper supplied to the machine are transferred intermittently while held by sheet holding pawls on endless chain belts. Upon reaching the punching die, each sheet is formed with cut lines. This sheet is placed on a board and the cut sections are removed by remover bars in remover bar frames arranged movable vertically on both upper and lower sides of the board. The board is supported by a support which is carried by a mount such that the support is movable out of or into one side of a machine frame. The end on one side of the mount is pivotally secured to the machine frame by pins so that the mount is pivotable up and down about the pins. The other side end of the mount is pivotally joined to rods whose other ends are joined to eccentric shafts connected to a bevel gear. The bevel gear is meshed with another bevel gear secured to an end of a shaft which has provided at its other end a handle.

Abstract: A keyboard type electronic musical instrument which is provided with a keyboard having an arrangement of keys corresponding to an arrangement of letter names based on the scale of the equal temperament of 12 degrees, a sound signal generator for generating sound signals of frequencies defined for the letter names, first and second gate circuit means having gate circuits respectively supplied with the sound signals from the sound signal generator, a first mixer for mixing the outputs from the gate circuits of the first gate circuit means, a frequency multiplier circuit for frequency multiplying the output from the gate circuits of the second gate circuit means, and a second mixer for mixing the outputs from the frequency multiplier circuit and the first mixer. The sound signals supplied to the gate circuits of the second gate circuit means have higher or lower frequencies than the sound signals supplied to the corresponding gate circuits of the first gate circuit means.

Abstract: Apparatus for treating a web of textile material in a dwell zone comprises means for guiding around a closed circuit a plurality of suspension bars for carrying loops of the web of material. The web is fed downward at a fixed entrance point in such circuit to cause each passing suspension bar to pick up a loop of the web and is withdrawn continuously at a point in such circuit immediately preceding such entrance point.

Abstract: Information reproducing and recording apparatus is disclosed which has a tape recorder mechanism, a disc recorder mechanism and an electric circuit for reproducing and recording and in which information obtained from the disc recorder mechanism is recorded on the side of the tape recorder mechanism in the state that the tape recorder mechanism and the disc recorder mechanism are in constant-speed forwarding and reproducing modes of operation, respectively. Switching of the disc recorder from a non-reproducing mode to the reproducing mode of operation is detected and, based on the detecting signal, the tape recorder mechanism is automatically changed over from a stop mode to the constant-speed forwarding mode of operation. Switching of the tape recorder mechanism from the stop mode to the constant-speed forwarding mode of operation is detected and, based on the detecting signal, the disc recorder mechanism is automatically altered from the non-reproducing mode to the reproducing mode of operation.

Abstract: An endless strand of textile material is initially dyed by transporting it spirally through successive compartments of a vat and simultaneously and separately circulating a homogeneous dye liquor through the compartments individually, and then the textile material is rinsed while continuing to transport it through said successive compartments, by causing a rinsing liquor to flow successively through the compartments in countercurrent to the movement of the textile material.

Abstract: Two flexible chains, each of which is composed of links connected by hinge pins, form the lateral sides of the cover. Each link of one chain is connected to an opposite link of the other chain, at least at the top, by a rigid cover member to form a cover section. The cover members of adjacent cover sections are in sliding contact, and at least one surface which participates in each such sliding contact is in the form of a sector of a cylinder whose axis is in alignment with the hinge pins connecting the links forming the sides of such adjacent cover sections. Adjacent cover sections also are provided with opposed stops which limit the angle of relative pivoting of such adjacent cover sections.

Abstract: A drawer side panel having a channel extending lengthwise of the face thereof which is outermost in use, the channel being parallel to one longitudinal edge of the panel and having a longitudinally extending lip projecting across the entrance to the channel from at least one longitudinal edge thereof. The panel is used with novel forms of drawer runner and may be adapted to be interchangeably mounted on runners of different construction. Various other novel components are also disclosed.

Abstract: A loading coil for the antennas of the type adapted for use in the citizen frequency band and mountable at the roof, trunk lip or rain gutter of automobiles, the device featuring a tap lead-out mechanism designed to allow tap lead-out from the loading coil with no need of soldering the lead-out wire to the coil wire and to also allow easy connection to the coaxial connector unit. There is also provided a loading coil construction designed to allow initial integral formation of both the loading coil bobbin and the connector unit for connection of the coaxial cable.