baber/WOPTO huggingface dataset:
Patent GB-807780-A (GB)
Title: Improvements in or relating to circuit arrangements for automatic volume control
IPC: H03G3/20
Filed: 1956-12-18
Abstract: 807,780. Automatic gain control. SIEMENS & HALSKE A.G. Dec. 18, 1956 [Dec. 23, 1955], No. 38563/56. Class 40 (5). In a radio receiver automatic gain control (A.G.C.) is normally obtained from the load circuit 9, 10 of a rectifier 5 which is connected to one winding 4A of a transformer 4 in the carrierfrequency part of the receiver. A delay bias is obtained from the H.T. supply by means of a potentiometer comprising resistors 13, 14 and the load circuit 9, 10 is of short time-constant. A further winding 4B on the transformer feeds a second rectifier 6 having a load circuit 11, 12 of long time-constant; a delay bias is obtained from the potentiometer comprising resistors 15, 16. The voltage derived from the load circuit 11, 12 is also applied to the receiver, but via a third rectifier 8. The delay biases on the two rectifiers 4, 5 are so adjusted that in normal operation the third rectifier 8 is non-conductive, and the gain control voltage applied to the receiver is that across the load 9, 10; if, however, rapid fading occurs so that this voltage falls, the rectifier 8 becomes conductive and the voltage across the circuit 11, 12 of longer time-constant takes charge. A resistor 17 is provided in series with the rectifier 6 in order to prevent heavy loading of the transformer 4 by the rectifier circuit 6, 11, 12 on sudden considerable variations of the signal input level, e.g. during tuning. The arrangement is more particularly intended for use in single-sideband receivers, to combat the effects produced by selective fading, and in C.W. telegraphy receivers.
Patent GB-910954-A (GB)
Title: Method of and means for ensuring normal operation of machine components subject to friction, by temperature control thereof
IPC: D04B11/00
Filed: 1958-12-01
Abstract: 910,954. Knitting-machines. SOC. BELGE D'OPTIQUE ET D'INSTRUMENTS DE PRECISION. Dec. 1, 1958 [Dec. 12, 1957], No. 38591/58. Class 74 (2). [Also in Group XIII] A knitting-machine component, such as a sinker head, Fig. 3, or a bed, Fig. 4, is maintained at substantially ambient temperature by means of a, say, copper pipe or pipes 2 clamped thereagainst and through which liquid is caused to circulate only when the temperature of the component deviates from ambient temperatures. The liquid is drawn (Group XIII) from a constant level tank, either by a pump controlled by a thermostat 14 on the component, or by thermosyphonic action, and the temperature of the liquid in the tank is maintained constant by a thermostat therein, or thermostat 14 on the component, which controls a liquid admission valve.
Patent GB-1474450-A (GB)
Title: Electric switches
IPC: H01H13/70
Filed: 1974-09-06
Abstract: 1474450 Mechanical switches; fluid pressure switches STANDARD TELEPHONES & CABLES Ltd 5 Sept 1974 38829/74 Heading H1N An electric switch contact diaphragm comprises a resilient domed portion 20, Fig. 2, joined to one or more coaxial frusto-conical sections 201, 202 by grooved regions 204, 205. The arrangement is such that on the application of pressure as by fluid pressure at orifice 27 or by a push button (17) Fig. 1 (not shown) on a flexible strip 16 the diaphragm acts as a Belleville spring and has a reducing spring rate. The grooved regions 204, 205 engage contacts 22, 23 on a fixed base 24 which may be a printed circuit board. The diaphragm may be made of nickel-iron-chromium alloy or of beryllium copper or phosphor bronze and may be plated with hard gold on a nickel interlayer.
Patent GB-1010428-A (GB)
Title: Document feeding device
IPC: B65H1/02
Filed: 1963-10-02
Abstract: 1,010,428. Control of D.C. motors. SPERRY RAND CORPORATION. Oc t . 2, 1963 [Oct.11, 1962], No. 38853/63. Heading H2J. [Also in Divisions B6 and H1] The speed of operation of a D.C. motor is controlled by the output 148 from the emitter of a transistor 142. The latter is connected to an A.C. source through a first transformer 110, a variable transformer 84 and rectifying bridge 122. As the reluctance of the transformer 84 is varied, the output on the emitter of the transistor 142 varies and hence the speed of operation of the motor. Specification 972,687 is referred to.
Patent GB-991671-A (GB)
Title: Improvements in or relating to radio frequency heating apparatus
Inventor: TIBBS CHRISTOPHER EVAN MUNDELL
IPC: H05B6/76
Filed: 1962-10-16
Abstract: 991,671. Couplings. RADYNE Ltd. Oct. 16, 1963 [Oct. 16, 1962 (2)], Nos. 39142/62 and 39143/62. Addition to 909,009 as improved upon by 936,891. Heading H2E. Interference from a high-frequency heating apparatus is reduced by providing it with a casing and a lid, each of these members having double walls, 26 and 27, and 13 and 25, respectively, so that when the lid is closed an electrical joint is formed between the casing and the lid, by one wall of each member fitting into the space between the inner and outer contact walls of the other member, contact springs 32 and 33 being mounted on the walls so that the contact is made through the springs between each of the contact walls of one screening member and one of the contact walls of the other screening member. The walls and springs are so arranged that they bend to separate the casing and the lid, and a device such as an electromagnet is provided for holding them together against this tendency. Strips 41 and 42 are riveted to the lower edges of the inner and outer lid walls 13 and 25 and serve to trap the edges of contact strips 32 and 33.
Patent GB-1445687-A (GB)
Title: Wall panels -methods for making assembles thereof to form  demountable partition walls
IPC: E04B2/82
Filed: 1973-08-20
Abstract: 1445687 Partitions R G FULLER 20 Aug 1973 39462/72 Heading E1W A partition panel 5a has vertical edges e.g. 10c, 10d each shaped to interlock, when the panel is moved perpendicular to its general plane, with a corresponding edge, a horizontal member, e.g. 3a being designed to co-operate with an upper edge of the panel to centre it, in co-operation, e.g. with a lower framing member 1. The panels may have a lightweight cellular core, and be formed from peripheral framing members arranged in a mould with facing sheets enclosing a space which is then filled with a foamed polymeric material, based, e.g. on isocyanate. In the embodiment of Fig. 1, an elastomeric pad 4 spring-loads member 3a downwards in ceiling runner 2, and a keyoperated cam 14 can maintain panel 5a in its lowermost position. In the embodiment of Fig. 2 (not shown) a channel-shaped ceiling runner extends down beyond and outside the top edges of the panel to guide the panel. The framing members may be extruded from high density polyethylene.
Patent GB-1220633-A (GB)
Title: Process for the improvement of bond strengths between brick or metallic surfaces and cementitious materials
Inventor: BRAGG WALLACE JOHN
IPC: C09J127/08
Filed: 1968-08-20
Abstract: 1,220,633. Coating with mortar. DOW CHEMICAL CO. 20 Aug., 1968, No. 39775/68. Heading B2E. Cementitious mortar is adhered to a brick or metallic surface through an intermediate layer of a thermoplastic vinylidene chloride interpolymeric latex of from 35-90% by weight vinylidene chloride and from 65-10% by weight of at least one dissimilar interpolymerizable monomer, based on a total interpolymer latex solids content of 100% by weight. The latex is applied to the substrate as a coating and subsequently allowed to dry to a film before applying the cementitious material. Suitable interpolymerizable monomers have the formula CH 2 =CRX, wherein R is hydrogen, methyl and X is -CN, fluorine, chlorine or bromine or -COOY wherein Y is a primary or secondary alkyl group (C 1-18 ). Other suitable monomers are alkoxyethyl acrylates or methacrylates. The latex is applied to the substrate by brushing or spraying. The cementitious material may be Portland cement which is applied to the substrate after mixing with water. Comparative examples describe the coating of metallic surfaces with emulsions of a styrene/butadiene copolymer and an acrylic copolymer.
Patent GB-1532369-A (GB)
Title: Heat sink
IPC: H01L23/473
Filed: 1977-09-23
Abstract: 1532369 Heat sink SIEMENS AG 23 Sept 1977 [24 Sept 1976] 39837/77 Heading F4U [Also in Division H1] In a heat sink for electrical components, cooling fluid flows through a duct 1 in a block 4, and the duct takes the form of two coupled substantially helical coaxial portions with their windings alternating in an axial direction. The material of block 4 may be metal or heatconductive plastics.
Patent GB-997615-A (GB)
Title: Portable container
IPC: A01K63/02
Filed: 1963-10-09
Abstract: 997,615. Refrigerators; cold retaining vessels. H. STANEK. Oct. 9, 1963 [Oct. 9, 1962], No. 39849/63. Headings F4H and F4U. Live fish spawn, eggs, or fresh water fish are stored on trays 7 in a thermally insulated container 1, the trays resting one upon another and a space 22 being left below the lowermost tray for the accumulation of water from cooling ice 12 on the top tray. The trays are made of foamed plastic or compressed cork, are formed in their bases with slots 11 widening in the downward direction for the passage of water, and have recesses 7a and 7b to allow them to be tied together. The stack of trays rests on supports 8 and each tray has top projections 9 for engaging corresponding recesses in the bottom of the tray above. The space 22 is filled with moss or felt to absorb water. A lid 16 having ventilation openings 17 fits in a recess 3 at the top of the container and a recess 4 extending around the container receives a paper packing 20 which is reinforced with cords or fibre glass strings and has openings 19 above the lid. A recess 21 in the lid is lined with an air permeable insert to prevent the packing 20 sticking to the lid and closing the ventilation openings. A heat reflecting layer may be present on the outside of the container and comprise a plastics or metal foil stuck on to the container. Alternatively aluminium paint may be used or liquid aluminium may be sprayed on to the container.
Patent GB-881433-A (GB)
Title: Improvements in or relating to packaging machines
IPC: B65B19/02
Filed: 1957-12-23
Abstract: 881,433. Packaging-machines; making cartons. AMERICAN MACHINE & FOUNDRY CO. Dec. 23, 1957 [Dec. 24, 1956], No. 39961/57. Classes 18 and 94(1). In a machine for packaging articles, e.g. cigarettes, of the type comprising a series of hollow mandrels carried by a rotary turret, a flexible inner wrapper is applied to and folded about each mandrel in succession, and a relatively-stiff, cardboard, outer wrapper, provided with end and side flaps, is subjected to preliminary folding operations while being conveyed towards the turret and is then applied to each mandrel over the inner wrapper. The folding of each outer wrapper is completed on its associated mandrel and the lined carton thus formed is filled with articles delivered through the mandrel, the filling operation stripping the carton from the mandrel and transferring it to mechanism for closing its open end. Apart from the mechanism for conveying the cardboard outer wrappers and effecting the preliminary folding operations thereon, the machine is generally similar to that described in Specification 550,042. Cardboard blanks, of the form shown in Fig. 7, are removed in succession from a magazine, Fig. 2, by suction cups 203 on an oscillating arm and delivered by rollers 208, 231 on to a chain 209 carrying feeding lugs 210. The blanks pass under a thickness detector which operates a microswitch 202, Fig. 4, to stop the machine if two or more blanks are superimposed. In the first of the five stages of movement of the blank shown in Fig. 4, adhesive is applied to the lower surface of a major end flap K, and a rotary member 211 separates the edges F of flap L from the inner front panel Z. In the second stage, adhesive is applied to the shaded areas of flaps or panels M, N, O and P. In the third stage, a rotary plough 214 bends the flap Q upwardly at right angles to the panel R, and a rotary member 232 folds the panels X, Y and Z upwardly about the creases G and H and then downwardly so that they are superimposed on the remainder of the blank. The folded parts are pressed together by ironing rollers 216, and in the fourth stage ; a rotary plough 217 bends the flap Q inwardly over the panels R and X and then allows it to spring back, and the front panels are pressed together by an ironing wheel 218. The folded blank is then applied to the underside of one of a series of hollow mandrels 207 carried by a turret which rotates intermittently about a horizontal axis, the mandrel being at the three o'clock position shown in Fig. 5 and having previously received an inner wrapper 224 which is held in position by a clamping finger 219. When the mandrel moves to the next position, the blank is folded to U- form by a trough-shaped folder 222 associated with each mandrel and the flap Q is folded over the flap P by a folder 225. The end flaps N, O, S and T are then tucked in and folded by mechanism similar to that described in Specification 550,042, and the open-ended, lined carton then formed receives a charge of cigarettes when the mandrel reaches the nine o'clock position.
Patent GB-1253586-A (GB)
Title: Improvements relating to internal shoe-drum brakes for vehicles
Inventor: HUGHES MICHAEL JAMES
IPC: F16D51/12
Filed: 1969-08-12
Abstract: 1,253,586. Internal shoe drum brakes; slave cylinders; spring applied, fluid pressure released brakes. GIRLING Ltd. 5 Aug., 1970 [12 Aug., 1969], No. 40156/69. Headings F2E and F2F. An internal shoe-drum brake has two shoes 10, 11 which are separated to apply the brake by opposed pistons 14, 15 and 19, 20 movable in respective double-ended hydraulic cylinders 16 and 18: for service braking the pistons 14, 15 and 19, 20 are urged apart by hydraulic pressure but for parking or emergency braking the pistons 19, 20 are moved apart mechanically by a wedge 26, the wedge 26 being actuated by a spring (in the form of Bellville washers 35 or a compression spring) which is normally held inoperative by fluid pressure. As shown, the cylinder 18 contains a third piston 21 and in service braking hydraulic pressure is introduced through on inlet 42 into a chamber 23 between pistons 20 and 21, whereby piston 20 is moved directly and piston 19 is moved through piston 21. In parking or emergency braking the wedge 26 is movable in slots 24, 25 in the pistons 19, 21 with the interposition of free running rollers 27, 28 retained in cages on the wedge 26 and the piston 19 is moved directly and the piston 20 is moved through piston 21. The wedge 26 is mounted on a rod 29 coupled by a swivelling joint 31 to a piston 32 working in a bore 33. To release and apply the brake by the wedge 26 fluid pressure is introduced into and evacuated from an annular chamber 37. Automatic adjusters 17, 17<SP>1</SP> are provided for both shoes 10, 11.
Patent GB-870494-A (GB)
Title: Improvements in or relating to devices for attaching and permitting the tilting and lateral displacement of books and other objects on their supports
IPC: A47B19/04
Filed: 1958-12-12
Abstract: 870,494. Book racks &c. OFFICE D'ANNONCES. Dec. 12, 1958 [Dec. 20, 1957], No. 40223/58. Class 52(1). [Also in Group XXV] A number of books or other objects 5, e.g. telephone directories, are pivotally mounted on a support 2 so that any one may be moved from a storage position, as shown, on to a surface 6, e.g. a reading desk, and laterally displaced thereon. Each article 5 has secured to it a pair of hinge members 13, 14 (see Group XXV), each pair being slidable on a common rod 1 fixed to the support.
Patent GB-1202059-A (GB)
Title: Apparatus for setting dynamic balancing machines
IPC: G01M1/22
Filed: 1967-09-04
Abstract: 1,202,059. Balancing machines. DIONYS HOFMANN G.m.b.H. Sept.4, 1967 [June 23, 1967], No.40407/67. Heading G1X. Apparatus for setting a dynamic balancing machine in which a test piece is set up relative to two bearing planes in which it is supported in bearings and two compensation planes in which material is removed from or added to the test piece to compensate for rotary inbalance comprises an instrument 5 for indicating the speed of rotation of the workpiece, and instruments 1, 2 and 3, 4 for indicating the amount of inbalance and the position thereof relative to a reference diameter for each of the two compensation planes, the references being set by knobs 9, 10, the apparatus further comprising four pairs of push buttons 8 or four tumbler switches which are used to set the reference planes as either bearing or compensation planes and three controls 7 which are used to set the distances between reference planes as measured from one end plane, the push buttons 8 and controls 7 being positioned in accordance with the sequence of reference planes along the test piece and the corresponding distance which it is desired to set. In use the operator decides on the relative positions of the bearing and compensation planes for the test piece and these are set by operation of the push buttons 8, causing illumination of appropriate symbols within the push buttons, and of the controls 7. Push buttons 6 are provided to adjust the rotary speed of the test piece and the measuring range for the instruments may be set by push buttons 11.
Patent GB-948789-A (GB)
Title: Improvements in or relating to centrifuges
IPC: B04B7/02
Filed: 1960-11-24
Abstract: 948,789. Centrifugal separators. WESTFALIA SEPARATOR A.G. Nov. 24, 1960 [Nov. 30, 1959], No. 40469/60. Heading B2P. A "stationary" part of the apparatus,carrying supply and discharge connections, is arranged to partake of the lateral vibrations of the rotating parts of the apparatus to relieve loads on the packings associated with the connections. As shown a frame 1 houses a drive 2 for a spindle 3 carrying a drum 9 which has a neck 17. A sleeve 7 enclosing bearings 4, 5 and 6 (for the spindle) is supported at its upper end in a collar bearing 8 so that it is free to rock laterally in the frame 1. The sleeve 7 is continuous with a bowl and a hood 10. Within the hood, sealing sleeves 11, 12 and 13 seal a supply connection 14 and discharge connections 15, 16 against the neck 17. Where fixed supply and discharge pipes external to the apparatus are provided, flexible intermediate portions 18 to 20 need to be inserted. Specification 844,768 is referred to.
Patent GB-965436-A (GB)
Title: Improvements in or relating agricultural and horticultural machines
Inventor: CARNALL HARRY JOHN
IPC: A01B33/08
Filed: 1961-01-25
Abstract: 965,436. Agricultural implements. FRANK BONSER & CO. Ltd. April 12, 1962 [Dec. 25, 1960], No. 40516/60. Heading A1B. An agricultural machine is provided with means for importing and controlling drive to an implement connected to the machine comprising a hydraulic circuit having at least one hydraulic pump, a source of hydraulic fluid, a relief valve, a control valve and means for connecting the circuit to at least one hydraulic motor connected to the implement. As shown in Fig. 1 an implement 3 is directly driven by a hydraulic motor 14 connected by pipe lines 11, 13 to a hydraulic pump 8 controlled by a valve 9 operable by a hand lever 10. In a modification the pump is situated on the implement and is driven by the power shaft of the tractor. The implement may be indirectly driven by gearing from the hydraulic motor. Specification 965,437 is referred to.
Patent GB-979025-A (GB)
Title: Improvements in and relating to extinguishing arcs
Inventor: DARBY KENNETH
IPC: B03C3/68
Filed: 1962-10-27
Abstract: 979,025. Arc-suppressing arrangements for electrostatic precipitators. LODGE-COTTRELL Ltd. Oct. 8, 1963 [Oct. 27, 1962], No. 40705/62. Heading H2H. A supply arrangement for an electrostatic  precipitator in which the transformer rectifier combination 15, 17 supplying electrodes 11, 13 is controlled by the winding 14 of a transductor 12, has means for extinguishing an arc between the electrodes comprising a silicon controlled rectifier 16 which controls the D.C. supply to the winding 14 and whose gate electrode receives signals of opposing polarity from a rectifier 26 and a resistance 28. Normally the rectifier 16 is conductive but is switched off when the voltage across electrodes 11, 13 decreases due to arcing, which is thereupon suppressed by the action of transductor 12. Cessation of arcing causes rectifier 16 to become conductive and normal operation is then restored. In a modification, Fig. 2 (not shown), the resistor 28 is in series with a condenser, this combination being in parallel with the lower voltage part of a voltage divider in parallel with electrodes 11,13. The condenser is charged during normal operation but discharges through resistor 28 when arcing occurs to switch off the rectifier 16. In other modifications the resistor 28 is supplied from a rectifier bridge responsive to the conditions in the primary circuit of transformer 15, this rectifier being connected across the transductor windings, Fig. 3 (not shown), across the output of a current transformer, Fig. 4 (not shown), or across the winding 21, Fig. 5 (not shown), this last modification also employing the condenser discharge circuit described above.
Patent GB-1062446-A (GB)
Title: Improvements in or relating to oil-filled cables
Inventor: BASKWELL JOHN ALFRED
IPC: H01B13/30
Filed: 1964-06-24
Abstract: 1,062,446. Impregnating and sheathing cables. PIRELLI GENERAL CABLE WORKS Ltd. Sept. 24, 1965 [June 24, 1964], No. 40723/65. Divided out of 1,062,444. Heading H1A. The figure shows an adaptor and plug intended particularly for joining a cable being impregnated and sheathed with a hawser for pulling it through the sheathing apparatus. The plug comprises a shell portion in the end of which the cable is clamped by a screw 27 and a mandrel portion 24 which fits axially into the shell portion into which it is soldered so as to be capable of release. The hawser is clamped to the mandrel as described in Specification 827,410. An axial hole in the mandrel communicates with the hollow portion of the shell and the end of the mandrel is closed by a diaphragm 29. This diaphragm is used in post-impregnation processes and is punctured after sheathing. The shell also carries 0-rings for sealing the sheath to the plug and a secondary bore 30 communicates with the outside of the sheath to allow air entering the space between the 0-rings to be withdrawn. A mandrel for use in a pre-impregnation process is described (Fig. 5, not shown) which terminates in a threaded portion with a central cone which may have on it a sealing cap, an oil supply pipe or a chain adjuster. In a still further arrangement (Fig. 4, not shown) the mandrel has a cylindrical recess in which the hawser is secured by grub screws.
Patent GB-1059363-A (GB)
Title: Improvements in and relating to structures such as embankments or dikes
IPC: E02B3/10
Filed: 1963-10-16
Abstract: 1,059,363. Films. KALLE A.G. Oct. 16, 1963 [Oct. 18, 1962], No. 40883/63. Heading B5B. [Also in Division E1] A thermoplastics film of, e.g. polythene, polypropylene or unplasticized polyvinyl chloride, has on its upper surface sharp edged particles which may comprise chopped, granulated, or powdered plastics materials secured to the film by sintering, fusing, gluing, or pressing. The film is further provided with raised portions of conical shape with rounded tops drawn into the film.
Patent GB-1001342-A (GB)
Title: Copolymers of trioxane with oxacyclopropane or oxacyclobutane or the derivatives thereof and process for preparing said copolymers
IPC: C08G65/10
Filed: 1961-11-15
Abstract: High molecular weight copolymers are prepared by condensing trioxane, with at least one cyclic ether containing 3 or 4 ring members, in the presence of a cationically active catalyst. Preferred copolymers are obtained when the polymerization mixture contains 1 to 40% cyclic ethers.  Specified ethers are ethylene oxide, epichlorhydrin, 3-methyl-3-chloromethyl-oxa - cyclobutane and 3 - 3 - bis - chloromethyl-oxacyclobutane; while specified catalysts are BCl3, AlCl3, FeCl3, SbCl3, SbCl5, ZnCl2, SnCl4, TiCl4, a complex compound of a Lewis acid, e.g. oxonium, diazonium or aryldiazonium salts of a Lewis acid.  Many are listed.