baber/WOPTO huggingface dataset:
Patent GB-634205-A (GB)
Title: Improvements in or relating to image frequency suppressors
IPC: H03D7/18
Filed: 1947-05-12
Abstract: 634,205. Impedance networks. COLONIAL RADIO CORPORATION, and SICKLES CO., F. W. May 12, 1947, No. 12764. Convention date, Nov. 10, 1938. [Class 40 (viii)] An image frequency suppression circuit comprises an acceptor circuit for the signal frequencies, having a variable inductance 3, Fig. 2, in series with a condenser 6, the inductance 3 being shunted by an inductance 8 in series with a condenser 5 to form a rejector circuit for the image frequency. The inductance 8 may be omitted if accuracy of tracking between the two circuits is not essential. The inductances may have a dust core 4 slidable along the axis of its coil 3, and arranged to enter the coil 8 as it leaves coil 3, Fig. 3 (not shown). In a modification, Fig. 4, the signal circuit is tuned by variable condenser 10 and if tracking over a wide frequency range is required, condenser 5 may be variable and ganged to condenser 10.
Patent GB-457141-A (GB)
Title: Improvements in or relating to ignition arrangements for starting internal combustion engines
IPC: F02P1/08
Filed: 1936-05-07
Abstract: 457,141. Ignition systems. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. May 7, 1936, No. 12856. Convention date, May 8, 1935. [Class 7 (iv)] In systems in which at engine starting battery current is intermittently supplied through a buzzer to the primary winding of a magneto, an auxiliary interrupter, in series in the batterybuzzer circuit but in parallel with the main interrupter, opens and closes later than the main interrupter. The Figure shows a single auxiliary interrupter 9 serving duplicate main systems.
Patent GB-281536-A (GB)
Title: Sewing machine presser foot
IPC: D05B29/00
Filed: 1927-05-13
Abstract: 281,536. Fairweather, H. G. C., (Greist Manufacturing Co.). May 13, 1927. Presser-feet.-A self-adjusting presser-foot comprises a shank portion 12 forked for attachment to the presser-bar, a block 15 which is pivotally attached to ears 13 on the shank by a transverse pin 14. and a presser-foot 16 having a lug 18 by which it is pivoted on a pin 17 passing through the block 15 in a direction at right angles to the pin 14. Stops on the ears 13 limit the movement of the presserfoot. The parts are, as far as possible, made of sheet metal.
Patent GB-252381-A (GB)
Title: Improvements in and relating to electric lamps
IPC: H01K1/26
Filed: 1926-05-20
Abstract: 252,381. British Thomson-Houston Co., Ltd., (Assignees of Hamner, M. J.). May 22, 1925, [Convention date]. Screens within bulbs.-In gas-filled bulbs of the kind described in Specification 10918/13, rising currents of hot gas are broken up by a deflector 22, preferably of metal, which is composed of a number of sections 23, 24 secured to the stem-press 16 wherein the leading-in wires 14, 15 are sealed. Points 27 formed on the sections may be pressed into the plastic glass immediately after the stem is pressed, a space 29 being left between the sections to permit a part of the hot currents to pass.
Patent GB-134495-A (GB)
Title: Improvements in or relating to Change-speed Gearing.
Inventor: LUMSDEN THOMAS
IPC: F16H3/04
Filed: 1919-05-22
Abstract: 134,495. Lumsden, T. May 22, 1919. Variable-speed gearing.-An arm or frame 10 pivoted on a fixed pin 11 carries a shaft 13 on which are secured a driving pulley 14 and a toothed pinion 15 adapted to engage any one of the rings of teeth 17, 18, 19 on a stepped cone on the driven shaft 20. A swinging and sliding motion of the frame is necessary to bring about the speed changes, and in order that the pinion 15 shall be free of one annulus before it can be engaged with another, the frame 10 is provided with two pins 22, 23 adapted to engage recesses, such as 24, 27, in each engaged position of the pinion. After the release of the pin 22, the frame has to be moved axially to release the pin 23 before the frame can swing, and in this position the pinion 15 is clear of the teeth on the cone. In a modification. the driving pulley is mounted on the pin 11 and provided with a long toothed pinion adapted to gear with a wheel on the shaft 13. In this case, the pulley has no swinging or axial movement .
Patent GB-1243950-A (GB)
Title: Improvements in or relating to rotating electric machines
Inventor: LAING NIKOLAUS
IPC: H02K5/10
Filed: 1967-09-06
Abstract: 1,243,950. Cooling electric motors. STANDARD MAGNET A.G. 12 Aug., 1968 [6 Sept., 1967], No. 12960/71. Divided out of 1,242,524. Heading H2A. A motor is enclosed in a cylindrical housing 33 which is extended to enclose a fan 30 mounted on motor shaft 35. The motor is sealed from the fan compartment and is cooled by air being drawn in through radial slots 31 and expelled past fins 37 which lie adjacent exit apertures 32. The jacket is preferably made from aluminium. The motor is used to drive a pump 36 which is attached to the end of the motor by a cap screw 40.
Patent GB-705193-A (GB)
Title: Pendulum locking means for timing mechanisms
IPC: G04B41/00
Filed: 1951-05-31
Abstract: 705,193. Clocks. JUNGHANS AKT.- GES., GEB. May 31, 1951 [March 21, 1949], No. 12989/51. Class 139 A pendulum locking device for time mechanisms comprises a retaining element having a part thereof adapted to receive the pendulub bob, a pivotable catch lever, one end of which is of forked construction so as to be able to move said bob into engagement with the retaining element, spring means urging said pivotable catch lever in a direction away from the pendulum bob, a toggle linkage for operating the said pivotable catch lever, means for limiting the movement of the said toggle linkage both in the direction of releasing said catch lever as well as in the direction of bringing the catch lever into engagement with the pendulum bob, and a rotatable sleeve-like member surrounding the winding arber of the time mechanism for operating the toggle linkage. The catch lever 5, 5a, Fig. 1, is pivoted on a pin 4 and is normally urged away from the pendulum bob 3a and the retaining element 7 by a spring 6. The arm 5c of the catch lever is connected by a pin 8 and slot 9a to a lever 9 pivotally connected to a lever 11 rotatable on the shaft 12. The levers 9 and 11 form a toggle linkage between the catch lever 5, 5a and a key rotated sleeve 13 attached to the lever 11. The lever 11 has two projections 11a and 11b which co-operate with the lever 9 to limit the movement of the catch lever in its freeing position and in its pendulum locking position, Fig. 1.
Patent GB-594733-A (GB)
Title: Contact tower for the catalytic conversion under pressure of gases
IPC: B01J8/06
Filed: 1945-05-24
Abstract: A contact tower 1 for the catalytic conversion of gases under pressure, e.g., carbon monoxide with steam, includes an inner removable filling unit consisting of a number of superposed and interlocked baskets P1, P2, P3, P4 charged with catalyst and a double heat-exchanger for preheating the gases, one portion being the annular space 31 between the inner wall of the tower and the outer wall of the unit, and the other being a bundle of heat-exchanging tubes 16 passing through each basket.  Blocked tubes 17 may be suspended inside tubes 16 to confine gas flow to an annular space. The baskets may be cylinders constructed of "Sicromal" (Registered Trade Mark) alloy, Chromesco steel, or soft boiler steel and having vertical ribs and a six-sector floor 9 supported on horizontal struts and perforated to allow passage of both tubes and gases.  Pyrometer sockets may be provided.  The tower may have asbestos and diatomite brick linings and may be provided in the annular space 31 with two helical baffles 32.  Gases from the inlet 27 flow down the annular space 31, up the tubes 16, <PICT:0594733/III/1> down through successive catalyst layers and leave by an expansion tube 29.  Inlet gases may be bye-passed direct to the catalyst unit for temperature control by the line 26 and expansion worm 24.
Patent GB-235853-A (GB)
IPC: D01D4/04
Filed: 1925-05-19
Abstract: 235,853. Bemberg Akt.-Ges., J. P. June 18, 1924, [Convention date]. Addition to 227,006. Apparatus for making filaments. -The device for introducing cleaning-fluid for the purpose of dissolving deposits in the spinning funnel, as described in the parent Specification, is modified in the case of apparatus consisting of a glass funnel enclosed by a glass cylinder. In this case, for the purpose of economizing cleaning-fluid the wall of the cylinder a is pierced at the level of the upper edge of the funnel band through the aperture is passed the pipe c for the introduction of the cleaning-fluid, the pipe projecting beyond the edge of the funnel. Alternatively, the pipe may be introduced at a lower level, in which case the funnel is also pierced to permit of the insertion of the pipe.
Patent GB-416805-A (GB)
Title: Improvements in steam traps
IPC: F16T1/30
Filed: 1933-05-05
Abstract: 416,805. Steam traps. HOPKINSONS, Ltd., BROWN, R. L., and EASTWOOD, J. A., Britannia Works, Huddersfield. May 5, 1933, No. 13120. [Class 64 (ii).] In a steam trap comprising an inverted bucket a and a discharge valve e closed or opened by the rising or falling of the bucket through the intermediary of a crank arm d, a horizontal spindle c, to which is secured a weight j, and a crank arm b, the angular rotation of the weight j first decreasingly retards the movement of the bucket in its rising position, and then assists the movement of the bucket in its final closure of the valve. During the latter movement of the bucket, the bucket and the weight are on opposite sides of the vertical plane passing through the spindle c.
Patent GB-578494-A (GB)
Title: Improvements relating to the control of direct current generators
IPC: H02P9/00
Filed: 1944-07-27
Abstract: 578,494. Transmitting mechanical power. BRITISH THOMSON-HOUSTON CO., Ltd., MAGGS, A. H.; and ADKINS, B. July 27, 1944, No. 13126. [Class 38 (iv)] A control system for maintaining constant the reaction torque of a D.C. generator over a range of speeds, comprises a torque motor or wattmeter loaded with a substantially constant torque, the potential element of which is supplied through a choke and rectifier from alternating current, the voltage of which is proportional to the generator voltage and the frequency of which is proportional to the speed of the generator, the current element of the wattmeter being excited in proportion to the load current of the generator. As shown, the alternating current is derived from separate windings 2, which may be single phase or polyphase, on the generator armature. The reactance of the choke 9 is high compared with its resistance. The current element 12 of the torque motor 11 may carry the generator current or a part of it as shown. The torque motor is loaded by means of a hanging weight 15 or alternatively by means of a coiled spring and is shown directly coupled to an arm 8 of the rheostat 7. The torque exerted by the motor 11 is proportional to the reaction torque of the generator. The motor may operate a rheostat in the field circuit of an exciter or a switching means for a rheostat operating motor. The torque motor may be damped, preferably by electro-magnetic means. The alternating current may be derived from the generator armature winding itself, suitably tapped or from a separate alternator driven at a speed and excited proportionally to the D.C. generator. Alternatively it may be derived from an armature excited inverter driven at a speed proportional to that of the generator and connected to its terminals.
Patent GB-744070-A (GB)
Title: A method of inhibiting the evaporation of volatile components of oil
IPC: C10L1/00
Filed: 1953-05-11
Abstract: The hollow particles described in Specification 743,866 may be mixed with crude oil or a non-volatile component of crude oil and applied as a floating layer to crude oil to prevent the evaporation of volatile components therefrom.ALSO:A composition for preventing the evaporation of volatile components of crude oil comprises small hollow hole-free particles (e.g. synthetic resin, sodium aluminate or silicate cellulose derivatives, proteins and alginate particles) and crude oil or a nonvolatile component of crude oil, the particles having an average diameter of from 1-500 microns a liquid displacement density of 0.05 to 0.6 gr./c.c.  The composition is applied as a floating layer preferably about one inch thick and in the form of a slurry to the crude oil the particles occupying from 20-70 per cent by volume of the floating layer, and preferably having an average particle diameter of from 25-250 microns, a liquid displacement density of 0.2 to 0.5 grm./c.c. and occupying from 40-55 per cent by volume of the floating layer.  The floating layer may contain a small proportion of an oil-insoluble nonvolatile lubricant and the hollow particles may be prepared as described in Specification 743,866.
Patent GB-131964-A (GB)
IPC: C01C3/00
Abstract: 131,964. Testrup, N., and Techno- Chemical Laboratories, Ltd. July 3, 1918. Cyanides.-In the production of cyanides such as barium cyanide, by spraying a mixture of powdered carbon and a metal compound into a heated atmosphere containing nitrogen and enough oxygen to burn the excess of carbon to carbon ' monoxide, the reaction product is received upon a layer of finely divided material forming a moving bottom to the reaction chamber. The apparatus is of the type described in Specifications 115,087, 129,758, and 129,771, [all in Class 51 (ii), Furnaces and kilns for applying &c.]. A shallow reaction chamber a has a hollow box-like bottom c with extensions c<1> and c<2>, the latter being per. forated to act as a sieve. A layer of reaction substance or inert material covered by reaction substance, or inert material alone is spread upon the top of the box c and is moved along from left to right by scrapers on an endless conveyer e, the lower portion of which passes over the surface f at the bottom of the apparatus. The air enters the box c at c<3> and passes out at c'', and thence through passages g, g<1>, g<2>, g<3> to the inlet g<4> of the reaction chamber, where it meets a stream of powdered barium carbonate and carbon from a hopper m. The gaseous products escape by a path h<1>, h<2>, h<3>, h<4> so as to heat the incoming air. The powdered material forming the moving bottom is supplied from a hopper d and falls through the sieve c<2>, and is returned to the hopper d by the lower portion of the conveyer e and by the conveyer j, while the barium cyanide passes over the sieve c<2> and is received in a hopper k.
Patent GB-576454-A (GB)
Title: Improvements relating to variable speed power transmission mechanisms
IPC: B62M25/04
Filed: 1944-07-11
Abstract: 576,454. Variable-speed gear control mechanism. VELOCE, Ltd., and UDALL, C. W. July 11, 1944, No. 13256. [Class 80 (ii)] [Also in Group XXXIV] In control means for variable-speed gears, a slidable and rotatable rod e having a control lever f at one end and a gear-shifting fork g or like member at the other end, is mounted near its ends on bearing balls d. The latter are spaced by a cage h with flared ends and are carried by a bearing sleeve b fixed in the gear casing a: The control mean shown is particularly for a motor cycle speed gear.
Patent GB-718739-A (GB)
Title: Improvements in and relating to dynamo-electric machines
Inventor: MAGGS ARTHUR HEMBOROUGH
IPC: H02K27/02
Filed: 1952-05-26
Abstract: 718,739. Dynamo - electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 26, 1953 [May 26, 1952], No. 13277/52. Drawings to Specification. Class 35 The regulating winding feeding the brushes of a machine as described in Specification 644,183 is supplied by putting one part winding of each sort of each phase on alternate stator poles only, instead of on each pole, each phase of the primary winding being divided into two parts, i.e. that on the poles of one polarity being in parallel with that on the poles of the other polarity. Each phase of the regulating winding is divided into series connected parts by the tapping points, each part being wound on poles of one polarity only, so that some or all of these parts are disposed on the poles of one polarity and the remainder or none on the poles of the other polarity.
Patent GB-581034-A (GB)
Title: Improvements in or relating to the electrodeposition of tin
IPC: C25D3/30
Filed: 1944-07-13
Abstract: 581,034. Electrodeposition of tin. IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 13, 1944, No. 13399. Convention date, July 13, 1943. [Class 41] An electrolyte for the deposition of tin consists of a solution of a stannous salt or compound and the ferrocyanide or ferricyanide of an alkali metal or ammonium. The ferrocyanide or ferricyanide may be used with known electrolytes in which the tin is present as the chloride, sulphate, fluoride, - phenol sulphonate or other salt of sulphonic acids together with hydrochloric, sulphuric or hydrofluoric acid. In an example the electrolyte comprises stannous chloride, sodium fluoride, bifluoride and chloride, hydrochloric acid, a polyethylene oxide having a molecular weight about 1,500, Schaeffer's salt and potassium ferricyanide. 75 grams of stannous chlordie are used per litre and 0.25 gram of the ferricyanide. The pH value is between 1.5 and 5. In another example 68 grams of stannous sulphate are dissolved in each litre of water together with sodium fluoride, bifluoride and sulphate, beta naphthol ethylene oxide and 1 gram of potassium ferrocyanide. The pH value is 2. A dry composition to be dissolved in water may consist of 66 per cent. stannous chloride, 33.5 per cent. sodium fluoride and 0.5 per cent. potassium ferricyanide. When the solution is made up the pH value is adjusted to 2.5 with hydrochloric acid. Specification 581,036 is referred to.
Patent GB-332922-A (GB)
Title: Improvements in or relating to fire extinguishers
IPC: A62C13/00
Filed: 1929-04-30
Abstract: 332,922. Foamite Firefoam, Ltd., and Gilbert, V. G. W. April 30,1929. Extincteurs.-A fireextinguisher of the kind which, comprises outer and inner containers 1, 2 for liquids which, when the containers are inverted, mix, whereupon a fire extinguishing foam generated by the mixture is ejected through a nozzle 11, has a single valve to control both the top open end of the container 2 and the feed pipe to the nozzle 11, which feed pipe leads to one side of the open end of the container 2. As shown, the container 2 has a ring 3 attached at its upper end and seats in a ring 5 cast with the neck 7 of the container 1 and suspended by bars 9. The feed pipe 10 also forms part of this casting and its inlet is flush with the top of the ring 5 and container 2. A stopper 8 for the container 1 carries a guide sleeve 12 for the stem 6<a> of a valve 6 which is adapted to control the outlet from the container 2, and the inlet to the feed pipe 10. The valve 6 may be opened, under the action of a spring 16, by unlocking a bayonet slot 14 in a sleeve-like knob 13 on the valve stem 6<a> from a pin 15 on the sleeve 12, and the container 2 is held on its seating on the ring 5 when the extinguisher is inverted by a spring 17 between a bar 18, arranged in the container 2, and the valve 6.
Patent GB-412389-A (GB)
Title: Improvements in and relating to automatic electric regulating devices
IPC: H02P9/20
Filed: 1933-05-09
Abstract: 412,389. Automatic regulation. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Rankin, W. K. ; 267, Highland Avenue, Lansdowne, Pennsylvania, U.S.A.) May 9, 1933, No. 13487. Convention date, May 11, 1932. [Class 38 (iv).] An automatic voltage-regulating arrangement comprises a pair of opposed windings, e.g. on a transformer, or field windings 3, 4 on a generator 1, for controlling the effective voltage of a variable voltage source, and a resistance material 5 of the type described in Specification 292,110, [Class 38 (iv)], whose electrical resistance decreases substantially instantaneously with increase in applied voltage, connected in series with one of the windings 4. The bucking winding 4 in series with the resistance 5 may be arranged on the field poles of the generator 1, or in the case of regulation of a transformer, on the same core as the primary winding so as to keep the flux in the core constant irrespective of voltage variations on the primary. Reference has been directed by the Comptroller to Specifications 370,881, 371,578, 385,115, and 399,467.
Patent GB-554271-A (GB)
Title: Improvements relating to the construction of buildings
IPC: E04B1/30
Filed: 1941-10-22
Abstract: 554,271. Building construction. HITCHINS, W. G. Oct. 22, 1941, No. 13596. [Classes 20 (i) and 20 (iv)] The framing of a building comprises posts 1 having steel rods or tubes 3 enclosed by timber parts 4 with grooves to receive the cores, the parts 4 being clamped around the cores and glued together. The beams 2, 2<SP>1</SP> have similar metal cores 5 near the bottom surface, and the beams 2 have clamp sockets 6 to receive the projecting cores 5 and the upper ends of the projecting cores 3. The lower ends of cores 3 fit loosely into sockets 10 passing through floor concrete 13 into concrete walls 11 and are secured by filling the sockets with cement mortar. In constructing the building, the foundations 11, 12 and concrete 13 are first laid, then a brick chimney and the necessary pipes, conduits, and fittings for domestic services, and then the framing and walls, partitions and roof, as in Specification 554,265. Wall slabs 8 are provided with grooves 9 in upper and lower surfaces to receive dowels 14 which enter holes in the posts 1. Fillets 17 cover the joints between slabs and posts. The posts extend above a flat roof 18 to form a parapet, and guttering 21 is secured to the beam 21. Plywood flooring 22 is laid on beams 23 secured to fillets 24 in the concrete 13. Internal partitions are similar to the wall slabs.
Patent GB-981905-A (GB)
Title: Multiple disc valves
Inventor: GONGWER CALVIN ANDREW
IPC: F16K47/02
Filed: 1962-04-09
Abstract: 981,905. Valves. AEROJET-GENERAL CORPORATION. April 9, 1962, No. 13598/62. Heading F2V. [Also in Division G3] A valve comprises a stack of annular discs 18 in which at least the alternate members of the stack are corrugated and resilient. These members may be separated by annular rigid rings, as shown, or by further corrugated resilient members so that a flow path is provided between the discs when in their natural state. The stack is spaced from the housing by axial ribs 14 and rings 17, 49 seal the ends of the stack to the housing and an end plate 25. The plate may be connected to an operating spindle 26 which applies an axial load to the stack to close the flow path. The valve may also be used as a pressure relief valve, the spindle being connected to a spring-loaded piston which is subjected to the controlled fluid pressure when flow is from the outside to the inside of the stack or the fluid may act on plate 25 when flow is in the opposite direction. When the discs are all resilient and corrugated, the corrugations of adjacent discs are of different radius or slanted in different directions.
Patent GB-296826-A (GB)
Title: Improvements relating to scrubbing, brushing, cleaning and like machines for wheat and other grain
IPC: B02B3/10
Filed: 1927-05-20
Abstract: 296,826. Simon, Ltd., H., (Frerotte, A.). May 20, 1927. Scouring &c. grain.-A machine for scrubbing, brushing, cleaning, or scouring wheat or other grain of the type in which a helix is rotated in the grain on an horizontal or substantially horizontal shaft has the helix or a part thereof made of a set-in or dished form or section. In one arrangement the dished portion a is at an angle of about 45‹ to the remainder of the helix b and may be provided with a scrubbing face c of emery or carborundum composition, or each face of the dished part may be so provided. As a further modification wire or other bristles may be secured on each face of the dished portion, or the dished part may be made of wood, with or without bristles, and attached to the helix instead of being integral therewith.