baber/WOPTO huggingface dataset:
Patent GB-809852-A (GB)
Title: Improvements in or relating to electric circuits including transistor devices
Inventor: LOEB HANS WALTER
IPC: H03K3/26
Filed: 1954-06-28
Abstract: 809,852. Discharge tube and transistor amplifying, relay operating, and two-stable state circuits. AUTOMATIC TELEPHONES & ELECTRIC CO. Ltd. June 21, 1955 [June 28, 1954], No. 18915/54. Class 40 (6). In an amplifier, the anode of a discharge tube 11, Fig. 1, is connected to the base b of a junction transistor 10a so that signals applied at terminals T1, T2 appear across the load resistors 12, 13, one of which is a low impedance. The emitter e and collector c may be interchanged when a NPN transistor is employed, Fig. 2 (not shown). In order to reduce the collector current when the tube 11 is cut off, a resistor may be connected between the base and either the supply Vo, Fig. 4 (not shown), or through a resistor 15, Fig. 5, to a separate supply B+ of slightly greater potential than the supply Vo. Since the resistors shunt the load presented by the transistor, a diode 17, Fig. 6, may be employed which has a low resistance when tube 11 is cut off but exhibits a high resistance when the anode of the diode goes negative with respect to the supply Vo. The resistor 13 may be replaced by an electromagnetic relay 19, Fig. 7, and the diode 17 may be shunted by a capacitor 18 so that an A.C. input is rectified to supply a steady D.C. through the relay 19. In a further modification, Fig. 8, the collector resistor 12 is returned to a negative potential and the collector c is connected over a resistor 20 to the control grid of the tube 11. The circuit has two stable states with the tube 11 and transistor 10a either fully conducting or cut-off. The resistor 13 may be replaced by a relay, Fig. 9 (not shown), with a self-holding circuit over a back contact and re-set switch so that the circuit may be reset by depression of the switch.
Patent GB-672869-A (GB)
Title: Improvements in or relating to responsive devices associated with electric vapour-filled discharge devices
IPC: G01N25/02
Filed: 1947-07-16
Abstract: 672,869. Hygrometric apparatus. GENERAL ELECTRIC CO., Ltd., and CLACK, B. N. Feb. 15, 1950 [July 16, 1947], No. 18970/47. Class 97 (iii). [Also in Groups XXXVI, XXXVIII and XL (a)] A discharge tube 1 is filled with a saturable vapour, so that when it is cooled the current therethrough suddenly drops at the temperature at which the filling is saturated. A meter or other responsive device 8 is used to determine the drop in current. The device may be used to indicate whether ambient temperature is above or below that at which the filling is saturated. If the filling is a sample, the temperature at which it is saturated can be determined to indicate the humidity of the vapour from which the sample was drawn.
Patent GB-738283-A (GB)
Title: Improvements in or relating to valve arrangements for use in resuscitation and in anaesthesia
IPC: A61M16/10
Filed: 1952-07-28
Abstract: 738,283. Fluid-actuated valves. MEDICAL & INDUSTRIAL EQUIPMENT, Ltd., and CHILDERHOUSE, E. P. Sept. 29, 1953 [July 28, 1952], No. 18988/52. Class 135. [Also in Group VI] A valve arrangement for use in resuscitation and anaesthesia comprises an inlet 1, a first outlet 4, an inlet closure member, e.g. diaphragm 2 controlling a passage 3a, 6a from the inlet to the outlet, a passage from the first outlet to a second outlet 6b controlled by a closure member 5, and a link 7 between the closure members whereby they can close only one passage at a time, so that inlet or first outlet pressure tends to operate the respective closure member to open its associated passage when closed and keep it open when open, the pressure acting over a smaller area when the closure member closes its passage and a larger area when it opens it. The inlet is connected via two reducing valves to an oxygen cylinder, and the outlet to a patient's lungs. The inlet pressure forces the diaphragms to the left to close the second passage and gas flows to the lungs. When the lungs have been fully inflated the pressure build up moves the diaphragms to the right and the gas exhausts to atmosphere at 6b until the pressure has been substantially reduced, because the inlet pressure now acts over a small area of the inlet diaphragm and the outlet pressure over a large area of the outlet diaphragm.
Patent GB-752515-A (GB)
Title: Improvements in or relating to multiple-tooth broaches having sizing members
IPC: B23D43/02
Filed: 1954-06-29
Abstract: 752,515. Broaches.LAPOINTE MACHINE TOOL CO., Ltd. (Lapointe Machine Tool Co.). June 29, 1954, No. 19079/54. Class 83 (3). A broach comprises a longitudinally-grooved bar 10 to receive broaching members 22, a pair of complementary sizing-members 30, 31 mounted in the groove and having cutting- teeth on one side only, and holding means 45 for engaging one sizing-member on the surface which is remote from its cutting-teeth. The pilot-tooth section 20, cutting-teeth 22, and chamfering, finishing and topping-teeth 24, 25 for cutting fir-tree slots, are as described in Specification 664,315. When the finishing teeth are worn below size the sizing-teeth 30, 31 are fitted. When these teeth, in turn, are worn, the face 60 of the member 30 is ground and a shim 62 inserted beside the member 31 so that the teeth, when clamped by the wedges 45, are offset to cut to correct size.
Patent GB-1087786-A (GB)
Title: Document feeder
Inventor: GRISWOLD AUGUSTUS WHARTON
IPC: B65H3/04
Filed: 1965-05-06
Abstract: 1,087,786. Feeding sheets. RANK XEROX Ltd. May 6; 1965, No. 19147/65. Heading B6B. Sheets are separated sequentially from the bottom of a stack by a pair of friction belts 12 which protrude through slots in the stack support 10 and extend beyond the support, and double separation of the sheets is pre- - vented by two rollers 14 which are rotated in a  direction opposing the movement of the sheets from the stack. The belts 12 are mounted on pulleys 44, 46, 48, the pulleys 44 being driven, and the pulleys 46 being mounted on spring- urged arms 56 to tension the belts. The upper reaches of the belts near the pulleys 44 are depressed by the rollers 14 so that the latter have extended contact with the belts. The belts 12 are constructed as timing belts with outer surfaces of sponge or foam rubber, and the friction between the belts and the sheets is greater than that between sheets. The rollers . 14 are covered by strips 17, Fig. 1 (not shown), of rubber &c. so that the friction with the sheets is greater than the friction between the sheets, but is less than the friction between the belts and the sheets. A side guide 18, Figs. 1 and 2 (not shown), is transversely slidable on the support 10 to confine the sheet stack against a fixed guide 22, and a curved guide 40 restrains forward movement of the top sheets of the stack. Separated sheets are guided by members 126 and rollers 128 beneath a roller 130 to a pair of feed rollers 11 in an associated machine, and these rollers 11 accelerate the forward movement of the sheets. The feed belts 12 can be driven by a separate motor, but, as shown, are driven from a gear 98, Fig. 4 (not shown), in the associated machine,and gears 102, 106 arranged in a cover 84 of the apparatus. The rollers 14 are driven by a timing belt 110. The feeding apparatus is secured by screws 96 to a plate 90 of the associated machine.
Patent GB-1055543-A (GB)
Title: A telescopic shock absorber
IPC: F16F9/46
Filed: 1965-05-06
Abstract: 1,055,543. Hydraulic shock absorbers. A. A. DE KONING and K. K. K. DE KONING. May 6, 1965 [May 6, 1964], No. 19246/65. Heading F2S. A shock absorber comprises a piston and cylinder assembly ports through the piston being controlled for damping of movement of the piston in both directions by spring-loaded valves 8, 34. The piston rod 2 is provided with a bore 10 which by means of further bores 11, 12 communicates with the cylinder at both sides of the piston. The bore 10 is extended in a bore 16 in which is slidably mounted a rod 15 carrying adjustably at its upper end a piston 21 working in a chamber 20 and at its lower end a sleeve 13 slidable on the piston rod and acting as an abutment for the spring 9 of the valve 8. The sleeve 13 also in its sliding movement along the piston rod is capable of closing one or more of the bores 12. The chamber 20 is fed with pressure fluid, for example from an air spring of a vehicle suspension system when the shock absorber is part of the suspension system, such that the piston 21 is urged outwardly of the shock absorber to move the sleeve 13 to restrict the flow of hydraulic fluid through the bores 12, the movement of sleeve 13 also increasing the pressure of the spring 9 against the valve 8.
Patent GB-1330828-A (GB)
Title: Face type sealing device
IPC: F16J15/34
Filed: 1972-04-26
Abstract: 1330828 End face seals VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY KONSTRUKTORSKY I TEKHNOLOGICHESKY INSTITUT GIDROMASHINOSTROENIA USSR 26 April 1972 [30 July 1971] 19262/72 Heading F2B An end face seal comprises a stationary sealing ring 3 mounted in an axially-movable sleeve 4 and pressed into sealing engagement with a rotary ring 1 by pressing means, such as springs 11, the sleeve being provided at one end with a groove 8 for supporting the corrugation 9 of a sealing bellows 6 to relieve it from the action of the pressure of fluid being sealed and at its other end with a sealing member 10. The springs 11 are carried by a carrier 12 and act on the sleeve 4 through a thrust ring 13. Leakage from between the rings 1, 3 passes to a collector 16.
Patent GB-150302-A (GB)
Title: Combination article of furniture
IPC: A47C17/30
Filed: 1920-07-07
Abstract: 150,302. Jensen, N. H. Aug. 23, 1919, [Convention date]. Bedsteads convertible into seats.-Two chairs are hinged together at A so as to form a settee, Fig. 1, and after being turned into the position shown in Fig. 2, the upper part C of each seat member may be turned about the hinges B to form a double bed, Fig. 3. The mattress-supporting frame may be hinged at F, or the frame may be turned about the hinges B to give access to a box K in which the bedclothes may be stored.
Patent GB-1311209-A (GB)
Title: Display system
IPC: G09G5/00
Filed: 1970-04-22
Abstract: 1311209 Cathode-ray tube displays A B DICK CO 22 April 1970 [14 May 1969] 19329/70 Heading H4T The Specification describes a data display system employing the arrangement described in co-pending Application 19902/70 with reference to Figs. 1 to 8 thereof for the basic character generation the present invention being characterized by the provision of means described with reference to Figs. 9 to 13 (none shown) for shifting all or a portion of the display upwardly or downwardly by one line space in order to produce a vacant line space in the display for the insertion of an additional line of  characters. Specification 1,251,689 is referred to.
Patent GB-730299-A (GB)
Title: Improvements in or relating to electric air heating and circulating apparatus
Inventor: WILKINSON GEORGE HENRY
IPC: F24H3/04
Filed: 1952-07-31
Abstract: 730,299. Unit air heaters. ELECTRIC & MUSICAL INDUSTRIES, Ltd. July 31, 1953 [July 31, 1952], No. 19356/52. Class 137. [Also in Group XI]  An electric air heater, in which a fan 27 induces air to flow over electric heating means, e.g. elements 17, 18 which are controllable to provide at least two degrees of heating, has means for varying the speed of the fan 27, and a member, e.g. a lever 46, for controlling and deenergizing the elements 17, 18, the lever 46 being interconnected with the means for varying the fan speed, whereby an increase in the heat output is accompanied by an augmented air flow, and vice versa, and, when the lever 46 is adjusted to de-energize the elements 17, 18, the fan 27 is adjusted to increase the air flow to a value greater than when the elements 17, 18 are energized. The heater comprises a base 1, top 2, and intermediate parts 3 having louvres 4, air being drawn in at the back of the heater, passing over the elements 17, 18 mounted in parallel between metal plates 12, 14, e.g. as described in Specification 588,839, and leaving by apertures 10. The fan 27 is driven by an electric motor 28, and is of the axial flow induction type. The sector-shaped lever 46 controls a switch which has four positions (see Group XI). In one position the elements 17, 18 and motor 28 are de-energized; in a second position the fan receives full voltage, e.g. 250 V., the elements 17, 18 remaining " off " ; in a third position the element 17 is energized, the fan receiving 150 V.; in a fourth position the elements 17, 18 are energized in parallel, and the fan receives 200 V. In the second position a rod 38 mechanically operated by the lever 46 acts through a bar 6 to raise the louvres 4 to their upper positions 4a. In all other positions the louvres 4 are down, deflecting the warm air of positions three and four onto the floor. Specifications 484,720 and 713,773, [Group XXXVII], are referred to.
Patent GB-1597814-A (GB)
Title: Palladium complex process for the preparation thereof and catalyst usable for producing 1,3-diene oligomers
IPC: C07F9/02
Filed: 1978-05-12
Abstract: The palladium complex disclosed herein is bis[tri(ortho-tolyl)phosphine] :palladium which is produced by reacting a palladium salt with tri(ortho-tolyl)phosphine and reducing the resultant bis[tri(ortho-tolyl)phosphine] palladium salt with an alcoholic alkali. This complex is useful as a catalyst for the production of 1,3-diene oligomers.
Patent GB-715432-A (GB)
Title: Device for insertion in a child's play bucket or pail
IPC: A63H33/32
Filed: 1952-07-31
Abstract: 715,432. Children's sand buckets; chance apparatus: BARCOTT, A. H. Jan. 13, 1953 [July 31, 1952], No. 19410/52. Classes 132(2) and 132(3) A mould device for use with a child's sand bucket comprises two or more separable inter-fitting parts, at least one part being of ornamental configuration. In Fig. 1. a centre disc 1, an intermediate ring 2, and an outer ring 3 of stepped configuration fit together in the bottom of the bucket 4. A plurality of interchangeable parts may be provided and one part may form the bottom of the bucket or be permanently fixed in position. The outer ring 3 may be embossed with letters or numerals at the parts marked 3<SP>x</SP>, the numerals permitting the device in a bucket. to be used, e.g. with a pebble, to play a. game in the nature of roulette.
Patent GB-695673-A (GB)
Title: Improvements in and relating to reservoir writing instruments
Inventor: FEHLING HANS REINHARD
IPC: B43K7/08
Filed: 1947-06-03
Abstract: 695,673. Reservoir pens. CAMPANIA URUGUAYA DE FOMENTO INDUSTRIAL SOC. ANON. Sept. 28, 1948. [June 3, 1947] No. 19412/51. Divided out of 695,621. Drawings to Specification. Class 146 (iii). In a ball-point pen having a reservoir in the form of a vented tube, at the end of the ink column remote from the ball, a liquid or semiliquid seal is provided which is substantially immiscible with the ink, constitutes a continuation of the ink column, and retains or assists in retaining the ink column in position to prevent leakage. The description is substantially the same as that of Specification 695,621, which is referred to but the claims differ. Specifications 571,698, 573,747, 629,226, 629,283, 634,564 and 688,891 also are referred to.
Patent GB-151427-A (GB)
Title: Improvements in or relating to variable speed gears for motorcycles and the like
IPC: B62M25/00
Filed: 1919-08-07
Abstract: 151,427. Holme, E. M., and Ruby Cycle Co. Aug. 7, 1919. Controlling variable-speed gearing.- In variablespeed gearing, claw clutches H are operated by striking-forks G, each co-operating with a screw of rapid pitch B. In the arrangement shown, the boss of the fork G- is formed as a nut engaging the screw B, which is mounted on a spindle A in a gear case E so as to be turned by an external lever F, while being kept from moving axially. In a modification, the nut is formed on the operating-lever, the spindle being axially-movable and carrying the screw, and having the fork secured to it. The invention is specially applicable to motor-cycles.
Patent GB-516607-A (GB)
Title: Manufacture of lacquered shaped articles
IPC: B05D7/16
Filed: 1938-07-01
Abstract: 516,607. Polyvinyl resin lacquers; hollowware. I.G. FARBENINDUSTRIE AKT.-GES. July 1, 1938, No. 19553. Convention date, July 13, 1937. [Class 2 (iii)] [Also in Group XVII] Sheet metal is coated with an air-drying lacquer having a basis of polyvinyl chloride, or after-chlorinated polyvinyl chloride, and is then shaped in a press. The lacquer may be very thinly applied, e.g., at 20 gms. per sq. in. Pigments may be included, e.g., aluminium,. aluminium bronze, chromium oxide green, iron black, titanium white. In examples, black plate is lacquered with compositions of afterchlorinated polyvinyl chloride with selections from the following: 'aldehyde resin, alkyd resin,. butyl acetate, acetone, tricresyl phosphate, the substance obtained by treating toluene with sulphur in the presence of aluminium chloride as described in example 1 of German Specification 365,169, cyclohexanone, solvent naphtha, methyl acetate, ethyl acetate, chlorinated diphenyl, methylglycol acetate. More than one coating may be applied.
Patent GB-1033556-A (GB)
Title: Improvements in screens for papermaking and like machines
IPC: D21F1/00
Filed: 1963-05-16
Abstract: A papermaking or like screen is woven from warp and weft threads of synthetic resin monofil, or wire sheathed with synthetic resin, though the weft may be rustless wire.  The cross-sectional area of the wap and weft threads is 20% smaller than usual but there are at least 50% more weft threads per inch than usual, so that the warp threads become flattened during weaving, both where they cross the weft threads and where they pass between them.  In a plain weave, the weft becomes crimped sufficiently for the warp and weft knuckles to lie in the same plane.  The fabric is made endless by weaving the ends together or by applying binding material.
Patent GB-516919-A (GB)
Title: Improvements in and relating to machinery for harvesting root plants, such as turnips, and the like
IPC: A01D21/04
Filed: 1939-06-26
Abstract: 516,919. Harvesting root crops. DOULL, G. June 26, 1939, No. 19642/38. [Class 6 (iii)] A machine for harvesting root crops comprises two obliquely arranged discs and a curved plate 15 with a sharp lower edge fixed behind the discs, so that as the discs roll forward the crops are lifted and directed over the top of the plate to an elevator or container. The inner faces of the discs may have short radial ridges 17, Fig. 3, and their edges may be formed with radial spurs 18, Fig. 4.
Patent GB-1057325-A (GB)
Title: Improvements in or relating to apparatus adapted for use in the manufacture of shoes
IPC: A43D69/02
Filed: 1964-05-12
Abstract: 1,057,325. Boots, &c. BRITISH UNITED SHOE MACHINERY CO. Ltd. May 12, 1964 [May 14, 1963], No. 19644/64. Heading A3B. Apparatus for use in the manufacture of shoes comprises transfer means for transferring lasts between the work stations of consecutive machines, the transfer means comprising gripping means for supporting the lasts and means for moving the gripping means to transfer the lasts. As described lasts of the type described in Specification 863,464 are transferred from a heel attaching machine A of the type described in Specification 980,176 to a heel trimming machine B of the type described in Specification 1,057,324. The last is supported by a carrier 28 which slides along guide rods 30, 32 and is connected by cables 40, which pass around pulleys 74, to both faces of a piston 38 in a cylinder 36. The carrier 28 is stopped at each end of the guide rods 30, 32 by adjustable stops 195 (Fig. 5, not shown) with the carrier 28 in alignment with the work station of the machine. The carrier 28 normally occupies a rest position between the two machines. The last has positioning plate 44 which is gripped between a fixed jaw 88 and a movable jaw 92 on an arm 80 which is pivoted on the carrier 28 for movement between an operative position (Fig. 5, not shown) and an inoperative position (Fig. 2). The movable jaw 92 is pivoted to the arm 80 and is moved to grip the last positioning plate 44 by a piston and cylinder 180 via a bell crank 114. The arm 80 is pivoted to a carrier 28 by a pin 78 which also carries a guide arm 82 which has a roll 132 mounted on its lower surface (Fig. 5, not shown). On moving into the work station of machine A (Fig. 2) the roll engages a cam block 134 which swings the arm 80 into operative position. At machine B the arm 80 is swung into inoperative position by the roll being engaged by a cam block 242 which is moved by a piston and cylinder 214. The work supports of both machines are similar in construction and are movable heightwise between a low, inoperative position and a high operative position. In both machines the last is loaded or unloaded by the transfer device at a height intermediate these two positions. The machine has a pneumatic control circuit which operates as follows:- when the heel attaching machine A has finished its cycle the carrier 28 moves from its rest position between the two machines (with the arm 80 in inoperative position) to the work station of machine A where the arm 80 is swung into operative position. Cylinder 108 is then operated to grip the last positioning plate between the jaws 88, 92 and the work support moves to its lowest position. The carrier 28 then moves to the work station of machine B where it positions the last above the work support. The work support is then raised and as it picks up the last the jaws are opened to release the last. Cylinder 214 is then operated to move the arm 80 to its inoperative position and the carrier moves back to its rest position between the machines.
Patent GB-864826-A (GB)
Title: Improvements in and relating to tetrahedral containers and the manufacture thereof
IPC: B65B9/12
Filed: 1959-06-09
Abstract: 864,826. Tetrahedral packages. BERGLUND, E. E. June 9, 1959 [June 10, 1958], No. 19710/59. Class 94(1). To minimize surface defects on tetrahedronshaped packages made from web material, all necessary handling of the web or the tube formed therefrom which involves a risk of damage is carried out in those zones of the web or tube which, at the moment of sealing, are located within the sealing surface and so do not affect the actual tetrahedron surfaces of the finished packages. The tube is also pre-creased along the zones to be sealed such that when the precreased area is sealed any damage due to the pre-creasing is contained within the sealed area. In Fig. 5, narrow edged jaws 3 close on the tube to form a sharp fold thereacross, and thereafter heat-sealing members 4 close on the tube and rack to the positions shown in broken lines to form an enlarged sealed area. In an alternative construction the members 3, 4 comprise single units on each side of the tube that are first closed on the tube to pre-crease it and are then rocked up and down to form an enlarged sealed area. The members 3 may then be used to sever the package. In Fig. 8 the sealing members house spring loaded creasing members; additional spring loaded members 6 serve to initially reduce the volume of the tetrahedron to allow for subsequent expansion of the contents when sealing is effected. In Fig. 9 heat-sealing rollers close on the filled tube and then roll up and down to widen the sealed area. Fig. 13 shows tetrahedron-shaped containers being made from a roll of paper and a reciprocating piston 5, synchronised with the heat-sealing members, contains a one-way valve such that on its down stroke the valve is open but on its upstroke the valve closes and the piston then tends to reduce the effective liquid head in the package being sealed. In Fig. 14 metal foil is coiled into tubular form before being creased and formed into tetrahedron shaped containers. After a flat sealing zone has been formed, the sealing zone may be severed and the cut edge folded over. A sealing strip may be added. In Fig. 19, rollers 14 and 15, synchronized with the heat sealing means (not shown), pre-crease the tube, and further shaping means 17, 16 also act on the tube before heatsealing is finally effected. Specifications 711,855 and 716,733 are referred to.