baber/WOPTO huggingface dataset:
Patent GB-953449-A (GB)
Title: Improvements relating to apparatus for producing signals indicative of relative position
Inventor: MYNALL DENNIS JAMES
IPC: G05D3/14
Filed: 1961-06-09
Abstract: 953,449. Measuring displacement electrically. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 6,1962 [June 9, 1961], No. 20958/61. Heading G1N. [Also in Division G4] A displacement transducer comprises a member 1 having an electrically conductive toothed profile, which is capacitively coupled to a movable member 2 itself comprising at least three equally spaced conductive strips S 1 , S 2  per tooth pitch which extend transversely to the direction of movement, all strips having a similar positional relationship to each tooth being electrically connected into a set, and the sets being connected to a transformer arrangement T which produces a displacement dependent output. In an arrangement in which there are four strips s to the tooth pitch P, two sets of strips comprising respectively S 1 , S 5 , S 9  &c. and strips S 3 , S 7  &c. are connected to the ends of transformer winding S 2  and strips S 2 , S 6 , S 10  &c. and S 4 , S 3  &c, to transformer winding C 2 . The centre taps of the windings are mutually connected and a supply voltage is connected between lines 7 and 8. In the position shown, the capacities between S 1 , S 3  and the member 1 are equal and hence the voltage in the winding S 1  will be at a Minimum whereas the capacity difference between strips S 2 , S 4  with the member 1 will be at a Maximum and thus result in a voltage Maximum at C 1 . Movement of the member 2 in the directions of the arrows d results in an attenuation of the voltage at C 1  and an increase at S1 so that for any relative position of the members 1, 2, within one tooth pitch, a characterising voltage relationship will exist between the windings S 1 , C 1 . The above arrangement may be used in the reverse i.e. two voltages of a form respectively E cos # and -E sine # may be respectively fed to the windings S 1 , C 1 . The Specification states that if # is the angle proportional to the mechanical displacement of the strips relatively to a given station on a toothed member, then a voltage proportional to E sin (#-#) is obtained at the conductors 7, 8 and may be used to control a positional servo system. In order to obtain a voltage output which is more closely sinusoidal, the strips s may be skewed from otherwise their 90 degrees relative angle to the direction of member movement. The profile of each tooth on the member 1 may be changed from that shown, to one in which arcs of a circle subtend 90 degrees at their centre and the curves intersect 90 degrees. The Specification shows an alternative arrangement in which there are six strips s to the tooth pitch, and also transformer configurations which permit the trimming out or compensation for electrical errors caused by manufacturing tolerances. To avoid unbalancing effects arising from leakage resistance, a guard ring technique may be used by providing a conductive screen connected to the junction 7 and which crosses any leakage path between members 1, 2.
Patent GB-736861-A (GB)
Title: Improvements in and relating to electric ovens
IPC: F24C15/00
Filed: 1952-08-21
Abstract: 736,861. Electric ovens. GENERAL ELECTRIC CO. Aug. 21, 1952 [Aug. 31, 1951], No. 21013/52. Class 39 (3). An electric range oven liner has an electrically conductive coating 34 of stannic chloride which forms the heating element. The liner 16, Fig. 2, comprises a sheet steel receptacle welded at 17 and having a back plate 18. After being cleaned by an alkaline and pickled in dilute H 2 SO 4'  rinsed and dried, the liner 16 is dipped in enamel, dried at 350‹ F., fired at 1550‹ F., and again pickled and rinsed. The conducting film 34 is applied to the four external walls of the liner 16, by spraying or by a roller, an uncoated strip 30 being left. The film may be one part of chloride to one part by volume of absolute alcohol, added to one part by volume of water. Silver terminal strips 31 are applied to each side of the strip 30, leads 35 being silversoldered thereto. The liner is again fired, at 1100‹ F. and cooled in air. Non-uniform heating by the liner 16 may be ensured by varying the thickness of the film 34. The completed liner is supported in an oven 1, Fig. 1, by brackets 20, electric hot plates 3, 'electric broiler elements 7, and a thermostat 12, 14, 15 being provided.
Patent GB-796220-A (GB)
Title: Improvements relating to the manufacture of metal strip
Inventor: EVANS HOWARD
IPC: B22F3/18
Filed: 1955-07-20
Abstract: A process in which metal (e.g. Ni, Fe) powder is compacted into strip by passage between horizontal rolls arranged side by side (prior to sintering) is characterized in that the powder is a mixture of "A" and "B" powders the proportion of "A" being from 25 to 95 per cent by weight.  "A" powder consists wholly or mainly of discrete, more or less rounded particles: "B" powder is wholly or mainly of a fibrous structure which may be formed from agglomeration of more or less rounded particles.  These differences are most marked in carbonyl Ni and carbonyl Fe powders, the bulk densities of which are respectively "A" type 2 to 2.8 gm. per ccm; "B" type 0.6 to 1.4 gm. per ccm. Preferably rolls of diameter from 50 to 100 mm. are used, the compacted strip having a thickness between 0.1 and 0.25 mm.  In an example, a mixture of 50 per cent each of the "A" and "B" Ni carbonyl powders is used, the bulk densities being 2.6 gm/ccm. and 0.9 gm/ccm respectively whilst the "A" particles are approximately 4 m  and the "B" particles approximately 3 m  in size.  The mixture is compacted between rolls 66.7 mm. in diameter, at 3 meters per minute to form continuous strip 0.15 mm. thick and 50 mm. wide.  The strip is passed directly through a tube furnace having a zone 0.6 m. long maintained at 900 DEG  to 1200 DEG C. the atmosphere being hydrogen or cracked ammonia.  The strip may then be cold-rolled in four or five stages with intermediate annealing treatments carried out by passage at 3 m. per min. through the sintering furnace maintained at 900 to 1200 DEG C.  The thickness of strip may be reduced by 70 per cent and will be free from porosity.
Patent GB-121732-A (GB)
Title: A Lamp for Motor Cars and for other Applications.
Inventor: HEIDELBERG PAUL
IPC: F21S13/00
Filed: 1918-12-17
Abstract: 121,732. Heidelberg, P. July 10, 1917, [Convention date]. Vehicular and like lanterns.-A motorcar or other lamp has an open front, and comprises a parabolic reflector B secured to a metallic casing E, an elliptical opening P in the reflector B above the acetylene burner I communicating with the space between the reflector and the casing. When not in use, the open end of the lamp may be covered by a hood or cap R of rubber, leather, &c. The focus of the reflector, at which the centre of the flame is arranged, may be 3 centimetres from the apex of the reflector and 27 centimetres from the plane through its open end.
Patent GB-985331-A (GB)
Title: Improvements in or relating to hydraulic engine starters
Inventor: WOOD ROBERT SPURGEON
IPC: F04C2/14
Filed: 1960-06-15
Abstract: 985,331. Gear motors. PLESSEY CO. Ltd. June 15, 1961 [June 15, 1960], No. 21087/60. Heading F1F. An hydraulic engine starter comprises a motor housing, a main gear 1 in the housing and provided with an output shaft and a sprag clutch (Fig. 2, not shown) on the shaft, and two or more further gears 2, 3 in fluid-tight engagement with the main gear, there being valves 16, 17, which may be set as shown to cause the gears 2, 3 to operate in parallel between an input 13 and an output 15, or (Fig. 4, not shown) so that the valve 16 is closed and the valve 17 connects passage 6 to passage 5 and the gears 2, 3 operate in series, thus providing a higher output speed at limited liquid flows. In a modification, valves 16, 17 are replaced by a valve 19 which in the full live position gives operation of the gears 2, 3 in parallel and in the dotted line position 20 leaves the gear 2 alone operative. In Fig. 2 (not shown) the motor is mounted in the nose cone of an aeroplane gas turbine engine nacelle coaxially with the engine.
Patent GB-638148-A (GB)
Title: Improvements in containers and method of producing the same
IPC: B21D51/26
Filed: 1946-07-15
Abstract: 638,148. Wrapping foods. REYNOLDS METALS CO. July 15, 1946, No. 21164. Convention date, July 24, 1945. [Class 49] [Also in Group XVII] Food is frozen in a rectangular metal foil package 22 (see Group XVII) and may be cooked therein before opening.
Patent GB-446249-A (GB)
Title: Improvements in or relating to electricity meters
IPC: G01R11/56
Filed: 1934-07-19
Abstract: 446,249. Supply meters. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. July 19, 1934, No. 21180. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 21, 1935]. [Class 37] [See also Group XVIII] In a prepayment electricity meter for a two-part tariff, the fixed charges are collected by importing a supplementary acceleration to the meter rotor 4, Fig. 1, by an additional electromagnet 6 provided with a voltage winding 7. The magnet 6 may be arranged to be in action for an adjustable predetermined time only. In this case, Fig. 2, the winding 7 is in series with a switch comprising blades 11 between which slides a metallic sector 12 on an insulating disc 13 which is driven at constant speed through gearing 15 from a motor disc 14. The shaft of the disc 13 is provided with a graduated scale coacting with a fixed pointer, so that the disc may be adjusted in position for the collection of different charges. In a further form, Fig. 4, the supplementary acceleration is applied only during the intervals of consumption of electricity and the meter itself produces the acceleration proportionally to the load. The voltage winding 2 of the meter is connected to the distributing mains by a switch 22 with one or other of the fixed contacts of which a movable contact 25 engages, the contact 25 being carried by a lever 23 rotatable about an axis 24 and being controlled by a cam 26. The cam is driven by the meter and after a predetermined rotation as shown by a scale 16 and pointer 17, the lever 23 drops unto a notch 28 and the contact 25 is moved from one position to the other. According to its position, the whole or only part of the winding 2 is brought into circuit. In another modification, Fig. 5, the effect of the braking magnet 30 is varied.. When contacts 25, 29 are closed, a solenoid 32 is energized and a " magnetic switch " 31 is advanced against the action of a spring 33 to increase the effect of the magnet 30. When the lever 23 drops into the notch 28, the circuit of the solenoid is broken and the magnet 30 restored to normal.
Patent GB-338113-A (GB)
Title: Improvements in or relating to machine guns
IPC: F41A21/36
Filed: 1929-07-10
Abstract: 338,113. Adams, E. S. R. July 10, 1929. Machine guns. - A muzzle attachment for assisting recoil in a Vickers or like machine gun has a muzzle piston 35 engaging a cylinder 1, the outside of which is provided with integral cooling fins 10, 11 to reduce the quantity of nickel fouling which collects in the cylinder. The cylinder is shown integral with an outer casing 2 which is attached by interrupted collars 13 to a member 4, Fig. 1. closing the front end 36 of the gun casing and serving to guide the barrel. A spring- actuated plunger 15 mounted in a housing 16 engages recesses 17 in a flange on the member 4 to lock the attachment in position. A cone 21, Fig 9, combined with a sleeve 27, which masks the gas escape holes 12, serves to obscure the flash of discharge. To prevent displacement of the sleeve 27, a pin 29 thereon engages a slot in the casing 2 and a flange 28 thereon fits between the casing 2 and the member 4 when the attachment is fixed to the gun casing. Specifications 29423/04 and 129,716 are referred to
Patent GB-215094-A (GB)
Abstract: 215,094. Gilsker, I. Feb. 2, 1923. No Patent granted (Sealing fee not paid). Calendars.-A perpetual calendar comprises a frame, a bearing the date figures of the months arranged in parallel columns as shown, a relatively adjustable slide b inscribed with the day names repeated several times, and a marker u for indicating the current or a particular date. The slide b works in grooves formed in the frame a and a button d projecting through the back plate facilitates its adjustment. The marker comprises a rod u carrying a frame indicator u<1> for the day name and an adjustable indicator u' for the date figures a notch on this indicator being adapted to engage with pins u<3> projecting from the rod u. Serrated ledges v and a spring controlled bridge u serve to hold the rod u in its daily adjusted position. To enable the calendar to deal with leap years the date figures for the months of January and February are mounted on a slide k supported on the frame a, the displacement of the slide being limited by stops l. A window n is provided to expose the numerals 29 when the slide is shifted. To obtain a calendar for any year in a number of centuries a plate o, secured to the frame a, is formed with slits r and corresponding strips s on which are marked the day name. Through the slits r are visible the numbers 1-100 on a slide q the number being arranged in groups of four as shown. At each side of the plate o are marked the century numbers and the first year of the centuries and the name of the day on which the first day, of the year falls. By setting the slide in accordance with this day name any year of the corresponding century can be set and ascertained.
Patent GB-1473864-A (GB)
Title: Electric heating inductors
Inventor: PONCIN ROGER
IPC: F27B9/06
Filed: 1974-05-15
Abstract: 1473864 Induction heating ELPHIAC SA 15 May 1974 [16 May 1973] 21617/74 Heading H5H A blank comprising a cylindrical portion 3 premachined at 9 from which a crank-pin 1 and associated webs 2 are to be forged is heated uniformly by a heating inductor comprising a main cylindrical winding 4 surrounding cylindrical portion 3 and a coaxial cylindrical auxiliary winding surrounding a web 2, the main winding 4 having a portion 6 adjacent the winding 5 which has a greater number of turns per unit length than a portion 7. Windings 4 and 5 are energized simultaneously in phase but auxiliary winding 5 is de-energized before winding 4 to ensure the desired uniform temperature distribution. Windings 4 and 5 may be embedded in heat insulation and may be mounted on a movable carriage or slide. Section 7 of winding 4 may be tapped to enable different length crankshafts to be heated.
Patent GB-662208-A (GB)
Title: Improvements in arrangements of walls, consisting of prefabricated blocks
IPC: E04B2/58
Filed: 1949-08-19
Abstract: 662,208. Slab walls. SANDVIKENS JERNVERKS AKTIEBOLAG. Aug. 19, 1949, No. 21634/49. Class 20(iv) Tubular frame members 16 are spaced on pegs 14 along a beam 12 and extend into side grooves 18 formed in prefabricated blocks 10 when the latter are placed side by side along the beam 12 to form a wall, each block being locked in position by a member 20 which extends into a groove 24 in the respective block 10 and has its ends engaged with a corresponding pair of tubular members 16. The upper ends of pins 36 when inserted in the members 16 are used to carry roof truss members 40, slabs 26 being placed between beams 12 to form a flooring.
Patent GB-993411-A (GB)
Title: Improvements in and relating to valves for the control of fluids
Inventor: DAVISON GEORGE ROBERT
IPC: F16K3/18
Filed: 1961-06-15
Abstract: 993,411. Valves. BRYAN DONKIN CO. Ltd. June 15, 1962 [June 15, 1961], No. 21704/61. Heading F2V. A valve has a pair of coaxially disposed closure members 15 which co-operate with seats 14 and are adapted to be slidably advanced and retracted to and from the closed position by actuation of an axially movable spindle 16 and is provided with means 24 on the spindle to disengage means 26 on the closure members 15 after the latter have engaged their seats to permit a limited idle movement of the spindle after closing and before opening the valve, additional means on the spindle and closure members being provided to apply and release clamping pressure on the closure members during the idle advance and retraction of the spindle. Each closure member has wheels 20 riding on guide rails 21 and pivotally supports the means 26 which are freed from engagement with the means 24 on the spindle when rollers 28 engage gaps 29 in the rails 21. Further movement of the spindle 16 now causes toggle links 32 to apply clamping pressure to spiders 34 on the closure members. During reverse movement of the spindle, the clamping pressure is released before the means 26 are re-engaged by the means 24. The spindle passes through a floating stuffing-box 37 in a bonnet 36. In a modification, only one means 26 is used on each of the closure members at one end of the means 24 which has its other end pivotally connected with the closure members.
Patent GB-354035-A (GB)
Title: Improvements in or relating to weatherproof wearing apparel for personal wear
IPC: A41D3/06
Filed: 1930-07-18
Abstract: 354,035. Weatherproof wearing- apparel. BLOOM, L., Tiverton Lodge, Tetlow Lane, Higher Broughton, BLOOM, M., 38, Wellington Street East, both in Salford, Lancashire, and HODGE, A. W., 44, Latchmere Road, Kingston-on-Thames. July 18, 1930, No. 21808. [Class 141.] Weatherproof wearing apparel comprises a coat combined with leg covering members. As shown, a raincoat 11 has attached thereto as by a strip 13 of rubberized fabric, a pair of flaps 12 for enclosing the legs from the thigh downwards. The flaps have at one edge buttons for engaging corresponding buttonholes 16 at the other, and also elastic strips 19 for passing under the wearer's feet. Buttons 14 on the strips 13 serve for engaging buttonholes on the bottom of the flaps. when the flaps are to be folded out of sight. The flaps are cut away at 18 to prevent them hindering the movement of the wearer.
Patent GB-233224-A (GB)
Title: Improvements in elastic fabric
IPC: A41D31/00
Filed: 1924-09-16
Abstract: .233,224. Kops, W. June 16, 1924, [Convention date]. Elastic fabrics. - A perforated sheet of waterproof elastic material 1 such as indiarubber is coated on one or both sides with absorbent material 2 such as knitted silk.
Patent GB-678340-A (GB)
Title: Improvements in doffing mechanisms for ring spinning, doubling and twisting machines
IPC: D01H9/18
Filed: 1949-11-29
Abstract: 678,340. Doffing arrangements in spinning &c. machines. T. M. M. (RESEARCH), Ltd., and HAYTHORNTHWAITE, J. J. Oct. 12, 1950 [Nov. 29, 1949], No. 21852/50. Divided out of 678,306. Classes 120(ii) and 120(iii) A spinning, doubling or twisting machine, of the type having means whereby on completion of the formation of the yarn packages the spindles are withdrawn therefrom or the packages are withdrawn from the spindles so that the packages are free to fall or be impelled laterally, comprises a front casing consisting of movable door-like members which are moved outwardly to form a hopper by which doffed packages are guided on to a travelling conveyer band whereby they are removed to the end of the machine. In the operation of the illustrated application to a ring spinning machine incorporating mechanisms described in Specifications 678,282 and 678,306 and considering one side of the machine, when the spindles are lowered, immediately before the freed packages at A are projected forwardly by separators as at 23, a rocking shaft 33 is partially rotated through a crank and connecting-rod linkage 37, 38, 39 from a slow speed shaft 40 within a reduction gear unit 18, as a result of engagement of dragclutch members 34, 35 which rotation acting through links as at 31 and cranks as at 32 causes casing sections as at 28 pivoted as at 29 to swing outwardly to form the hopper by which packages are received as at B and guided to an endless band conveyer 47 stretched between a driving roller 48 and an idler roller 49 on intermediate supporting plates 50. The conveyers (on both sides of the machine) are driven by a motor 51 the shaft of which carries a worm 54 meshing with a worm wheel 55 fixed on a shaft 56 driving the rollers 48 and through gears 57, 58, and 59 a shaft 60 which carries driving .rollers 61 of subsidiary conveyers 62 which receive packages from conveyers 47 as at C, Fig. 2, and discharge them as at E into receptacles. During the doffing operation the shaft 7 carrying cam means for actuating the separator plates is rotated through a shaft 19, worm and worm-wheel 20, 21, spurwheel 22, planet-wheel carrier 13, and planet-wheel 12 and pinion 11, a pinion 15 then being fixed. The conveyer is driven intermittently in timed relationship to the operation of the spindle doffing mechanism and the opening and closing of sections 28, which latter may also be controlled manually by means of a handle 43 connected to one limb 41 of a hell-crank lever carried on the shaft 33.
Patent GB-422333-A (GB)
Title: Improvements in pumps
IPC: F04D29/22
Filed: 1934-07-26
Abstract: 422,333. Centrifugal pumps. ASH CO. (LONDON), Ltd., 63, Lincoln's Inn Fields, London. July 26, 1934, No. 21889. Convention date, April 3. [Class 110 (i)] The rubber lining of centrifugal pumps used for abrasive mixtures is perforated to prevent the formation of blisters. The rubber covering of the impeller comprises an annular shroud 22, flanges 23<1>, 30, and blades 23 all of which are formed in one piece. Inside the blades are fibre distance-pieces 16. Perforations 34 extend through the flanges 23<1>, 30 to support plates 12, 15, and perforations 35 through the blades to the distance pieces 16. The rubber lining D of the casing is flanged at 49, 50, and is held between side plates 45, 46. Rubber sealing rings F, G engage the impeller at 7, 8, 10 and regulate the flow of flushing water from the pipes 5, 6.
Patent GB-589857-A (GB)
Title: Improvements in drill chucks
IPC: B23B31/12
Filed: 1943-12-31
Abstract: 589,857. Chucks. HOLLIS, A. C., and CLOUDSLEY, J. L. Dec. 31, 1943, No. 21917. [Class 83 (iii)] A drill chuck in which the tool can be changed whilst the spindle is rotating has a set of jaws 21 controlled by a sliding bevel-closing sleeve 3 secured by screws 6 to a body portion 4 having radial slots housing nut sections 8 connected by pivoted links 18 to a hood 9 slidable on the shank 1 that is threaded at 2 to coact with the nut. The ends of the links 18 have flats on one side of the pivots to prevent the links from moving beyond the dead centre position which is normally maintained by a spring 17 interposed between the body and hood. An operating sleeve 10 is mounted on the hood by a ball race 13 and is constrained to rotate with the head, except when grasped by the hand, under the light frictional engagement of spring pressed balls 16. A groove 16a receives the balls to maintain the chuck in the open position when desired. The end of the spindle is bored to receive the stem 23 of a pressure plate 22 engaging the ends of the jaws. The stem is in two parts, spring-pressed apart and it bears on a ball 24. In a modification the links 18 are loosely interposed and in a further form the nut sections are operated by slots 8b, Fig. 6, engaged by crank pins 28 on stub shafts 27 operated by other crank pins (not shown) engaging grooves in the hood.
Patent GB-510113-A (GB)
Title: A suction cleaning device
IPC: D06G1/00
Filed: 1938-07-23
Abstract: 510,113. Cleaning carpets. METTLER, H. W. July 23, 1938, No. 21954. [Class 138 (i)] [Also in Group XXVIII] Carpets, sacks, &c. are cleaned by passage over a suction trough containing a beater constituted by a rotary cylinder 6 bearing blades disposed at an angle to the shaft. Two or more such beating and suction troughs may be provided for successive operation. The blades may be tubes soldered to the cylinder. Several sets of blades may be provided on a cylinder at different angles. When treating flour sacks, a vessel may be provided to catch the residual flour which is discharged by the beating. A movable bar may be located near the suction trough, so that a sack &c. placed over the trough is drawn against and moves the bar to close a contact in the circuit of the motor driving the beater.