baber/WOPTO huggingface dataset:
Patent GB-581074-A (GB)
Title: Improvements in wide frequency band thermionic valve amplifiers
IPC: H03F3/22
Filed: 1945-02-07
Abstract: 581,074. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and WESTON, J. D. Feb. 7, 1945, No. 3161. [Class 40 (v)] In an amplifier, the condenser 7 has an impedance comparable with the anode resistance 5 at the low-frequency end of the band, the condenser 10 being chosen to keep the gain substantially constant over the band. When the grid-bias of valve 1 is varied by an automatic gain control circuit, the condenser 12 has the same order of capacity as condenser 10. Negative feed-back is provided by resistance 3, a rising response at the high-frequency end of the band being given by condenser 16 and resistance 17 when connected across resistance 3.
Patent GB-766440-A (GB)
Title: Perforating apparatus
IPC: B21D28/24
Filed: 1953-11-23
Abstract: 766,440. Punching. WALESSTRIPPIT CORPORATION. Nov. 23, 1953 [Jan. 8, 1953], No. 32457/63. Class 83 (4). [Also in Group XXXII] In perforating apparatus, the punch member is hollow and a solid spring providing the force between the punch member and a stripping member to strip the work is housed within the punch member. In a sub-press assembly having a C-shaped frame, a die 28, Fig. 3, is mounted on the lower framearm and a punch member consisting of a tube 31 and a punch tip 33 which is a press-fit in the tube 31 reciprocates in an aperture in the upper frame-arm 22 and is supported by a spring 55 engaging the arm 22. A hollow pin 38 secured in the stripping member 40 and sliding in slots 39 in the tube 31 is pressed downwards by a solid spring 46 of hard silicone, nylon or polystyrene. A threaded plug engaging a nylon seal may be provided in the top of the tube 31 to permit pre-loading of the solid spring 46. The perforated portions fall through a passage 29 in the die 28. In a modification, Fig. 7, one arm 93 of a C-shaped stripping member 80 surrounds the punch tip 90 and the other 83 passes through a slot 84 in the tube 71 and fits on a plug 77 loaded by the solid spring 76. The interior of the tube 71 is tapered. The punch and stripping members are returned to their normal position by a spring 85.
Patent GB-325370-A (GB)
Title: Improvements in or relating to gramophone cabinets
IPC: E05F11/54
Filed: 1929-01-31
Abstract: 325,370. Hibbard, C. G. Jan. 31, 1929. Cabinets.-The sliding doors a, b of a gramophone cabinet are so interconnected that when one is opened or shut the other moves with it. For this purpose the doors are provided with racks a<1>, b<1> gearing with a common pinion c. The racks are hinged to the doors at e and pass through a guide d.
Patent GB-247203-A (GB)
Title: Improvements in building blocks
IPC: E04B2/14
Filed: 1926-02-04
Abstract: 247,203. Steppe, R. Feb. 4, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Blocks, special shapes of.- A composite building block is provided with vertical reinforcement-receiving holes arranged alternately on opposite sides of the median plane of the block. Fig. 1 shows a block with a shallow slot 4 in the upper side to receive a reinforcing rod 3 and with through holes 5 to receive vertical reinforcing rods 6. Fig. 4 shows a large block for angle walls or wall heads, which is roughly T-shaped and has three vertical holes. Various arrangements of the blocks shown in Fig. 4 are shown in conjunction with rectangular blocks to form walls and pillars.
Patent GB-524516-A (GB)
Title: Improvements in electrically heated ovens
IPC: F27B9/28
Filed: 1939-01-31
Abstract: 524,516. Electrically-heated ovens. UHLENDORFF, O. Jan. 31, 1939, No. 3280. Convention date, Jan. 31, 1938. [Class 39 (iii)] In an electrically-heated oven the goods to be heated are placed on a conveyer which consists of endless chains carrying trays or pans, and which work in two parallel vertical shafts 1 and 2. The fan 5 propels air through the heat-. ing-shaft 3 into the distributing-chamber 7 in which there is a series of vanes which direct air on to the goods in shaft 1. Similarly, the fan 6 propels air through shaft 4 into the chamber 13, and thence into shaft 2. The outer walls of the conveyer-shafts have perforations opening into flues 11 and 12, from which the fans 5 and 6 suck air and pass it into chambers 3 and 4 for reheating. The vanes in chambers 7 and 13 may be rotatable and adjustable, and they decrease in length from top to bottom.
Patent GB-524583-A (GB)
Title: Improvements relating to machinery for joining the paper webs of rolls to feed printing presses
IPC: B65H19/18
Filed: 1939-02-01
Abstract: 524,583. Feeding webs. JAMES, H. V., and YATES, H. Feb. 1, 1939, No. 3410. Drawings to Specification. [Class 100 (i)]  In a web-renewing mechanism for a printing press in which the running and replacement rolls are carried by a rotatable roll stand and the replacement roll is rotated, prior to the joining operation, by engagement with driven belts, or by means of a driven pinion on its axis, a freewheel device is provided in the drive so that, after the joining operation, the roll can rotate freely at a speed in accordance with the pull of the web by the press.
Patent GB-308680-A (GB)
Title: Improvements in and connected with vacuum brakes for motor vehicles
IPC: B60T13/48
Filed: 1929-02-01
Abstract: 308,680. Daimler - Benz Akt. - Ges. March 26, 1928, [Convention date]. Fluid-pressure.-Relates to the actuation of brakes by the vacuum produced by motor vehicle engines and particularly those using crude oil, and having an ignition chamber or direct fuel injection. Imperfect combustion and smoke emission have occurred during braking, owing to insufficient air supply, and these defects are remedied by connecting the vacuum-brake apparatus with some only of the engine cylinders the supply to which or a part of them, during braking, is cut off. A six-cylinder engine a is supplied with fuel by a pump b having six plungers, one to each cylinder. The fuel enters at e and is delivered at f, and the pump is controlled by a rack or bar c connected, through link d, with the accelerator. The induction manifold is divided into two parts g, h of which g is provided with a throttle i connected to a pedal o through linkage k, l, m. The pedal o controls through a link p the brake cylinder q which actuates the brakes through links r, s. To apply the brakes the pedal o has to be depressed, but before this can be done the foot has to depress a pedal m which closes the throttle i. This produces a vacuum in space g before the brake is brought into action by pedal o which, when depressed, closes pipe t to the atmosphere. The fuel pumps of the cylinders communicating with the space h are set for idle running prior to or simultaneously with the actuation of the brakes, but the delivery of the pumps communicating with space g is cut off entirely. The control means for cutting out the fuel pumps may be connected with the brake control gear and may act stepwise, first setting all pumps for idle running and then on further movement cutting out other pumps, a part of the linkage beink arrested. Some only of the cylinders may be supplied during idle running. The cylinders from which the fuel is cut off may be connected in groups with the brake apparatus.
Patent GB-621981-A (GB)
Title: Projection screen
IPC: G03B21/58
Filed: 1947-02-05
Abstract: 621,981. Projection screens. TURNER, E. G. Feb. 5, 1947, No. 3484. [Class 97 (i)] In a roller type screen two pairs of links 20, 30 are pivoted to the box and to the top bar 16, the lower links 20 being connected by a spring 25 to erect the screen, the upper links 30 each consisting of an upper rod 32 telescoping into a lower hollow member with a slot 31 through which passes a locking device 33 by which the upper rod may be secured in any desired position. The upper ends of the slots 31 may be closed so that the rods 32 cannot be completely removed. Alternatively, cords at the vertical screen edges secured to the screen roller, or a spring detent engaging a spiral groove in the end of the roller, may limit the total extension of the screen. Specification 3644/39 as open to inspection under Sect. 91 and U.S.A. Specification 1,946,639 are referred to.
Patent GB-398164-A (GB)
Title: Improvements relating to the counting of microscopic bodies, such as blood corpuscles
IPC: G01N15/02
Filed: 1932-02-05
Abstract: 398,164. Gauging-apparatus. HILGER, Ltd., A., TWYMAN, F., and FOLLETT, D. H., 98, King's Road, Camden Road, London. Feb. 5, 1932, No. 3503. [Class 106 (ii).] Microscopic particles such as blood corpuscles are enumerated by passing light through a specimen and measuring the light diffracted by the particles. The size of the particles is estimated by causing the light, after it has passed through the specimen, to form an image, and measuring the size of the coloured diffraction rings produced. The apparatus is contained within a casing to which light is admitted through a variable aperture 1 from a lamp mounted on the outside of the casing. The light is reflected by a prism 2 to a lens 3 forming an image on a black spot on a lens 8. Immediately below the lens 3 is a unit 4 comprising a diffusing plate and an iris diaphragm, this unit being mounted on a pivot 5 so that it can be removed from the light path. The blood film is supported by a stage 6 above a rotatable platform 7 having a clear aperture 14 and a screen 16 bearing scales for measuring the diffraction rings. To estimate the size of the particles the platform 7 is turned to bring the screen 16 below the slide 6 and the size of the diffraction rings is measured by observation through an aperture 18.
Patent GB-1360580-A (GB)
Title: Nutritional product and method of manufacture
IPC: A23J3/08
Filed: 1972-01-26
Abstract: 1360580 Protein foods OSCAR MAYER & CO INC 26 Jan 1972 3580/72 Heading A2B A nutrition product having an attractive amino acid profile comprises a mixture containing whey protein and water-soluble collagen-derived protein, the whey protein constituting 10-95wt%, and the collagen protein 5-40wt% of the protein in the mixture. Also present may be soy bean flour, sesame flour, cotton seed flour, wheat germ, debittered brewers or Torula yeast, yeast or bacteria grown on petroleum paraffin, and vegetable oil or animal fat. The product may be used as a component of calf food.
Patent GB-1511761-A (GB)
Title: Spreading equipment
IPC: A01C3/06
Filed: 1976-01-29
Abstract: 1511761 Manure spreaders J. W T AGRICULTURAL IMPLEMENTS Ltd 29 Jan 1976 03635/76 Heading A1D In a manure spreader, flexible flails of different sizes are secured to a rotatable member 1 by either a clamping structure 4 or an auxiliary clamping device 3. A small end link 6 of a flail is held between L-shaped plates 4 by tightening a nut on a bolt 5 passing through aligned holes in the plates. Alternatively, retaining the link 6 as a spacer, a larger end link 7 is held against the side of one plate 4 by a U-shaped member 8 which is secured in position by the bolt 5. Specifications 891172 and 148611 are referred to.
Patent GB-137149-A (GB)
Title: Improvements in or relating to bars for supporting coke oven doors
IPC: C10B25/12
Filed: 1919-02-14
Abstract: 137,149. Morrison, J. Feb. 14, 1919. Coke ovens. - A bar for securing a coke-oven door is formed with a T-piece at each end to rest on brackets d bolted to girders h, j. The T-pieces c are not fixed centrally on the bar a so that by turning the bar through angles of 90 or 180 degrees, the pressure on the door through the spring c may be increased or decreased. The bolts g pass through the holes formerly used to receive the bar.
Patent GB-121864-A (GB)
Title: Improvements relating to Pump Strainers.
Inventor: SAVERY WILLIAM EDWARD
IPC: F04B53/10
Filed: 1918-03-02
Abstract: 121,864. Savery, W. E. March 2, 1918. Strainers.-A pump strainer a is mechanieally connected to its receptacle b, as by a screw-threaded collar c, and the closing cap d is similarly connected to the strainer, so that the opening through which the strainer is inserted cannot be closed until the strainer is in place.
Patent GB-254622-A (GB)
Title: Improvements in or relating to date indicators
IPC: G09D3/06
Filed: 1926-02-09
Abstract: 254,622. Jongh, P. J. de. Feb. 9, 1926. Date indicators.-A date indicator comprises a casing with apertures for displaying the day names and the days of the month inscribed on two or more rotatable and coaxially disposed members and connecting means whereby the two members can be moved simultaneously in one direction and arresting means whereby one of said members is prevented from moving by rotation in the opposite direction. In the form shown in Figs. 1 and 2, the day names and the date figures are arranged on discs 5, 4 and exhibited through apertures 3, 2, in a casing 1. The discs are provided with ratchet teeth 11, 13 arranged in opposite directions and are connected for movement on the operation of a knob 6 by a ratchet or free wheel device 12 mounted on the disc 4. A spring pawl 14 pivoted on the casing 1 engages the teeth of the disc 4 and prevents rotation in a direction opposed to the arrow f Fig. 2. A rotation of the disc 5 in the direction mentioned effects the setting at the beginning of each month. Additional apertures 9, 10 may be provided for showing the months and year marked on discs 7, 8. In a modified form shown in Fig. 3, the date markings are arranged on annular members 15, 16 integral with which are oppositely disposed toothed members 31, 29 cooperating with pawls 32, 30 pivoted on the member 16 and base 28 of the casing respectively. The setting is effected by a button 33 and gearing 34, 35. The casing may be combined with an ink well 22.
Patent GB-162420-A (GB)
Title: Improvements in and relating to devices for controlling the speed of automobile vehicles
IPC: B60K28/00
Filed: 1920-02-07
Abstract: 162,420. Gaillard, A. Feb. 7, 1920. Addition to 116,691. Controlling independently of drivers. -The speed is controlled by the passenger independently of the driver by the admission of air to the induction pipe of the motor. The valve comprises a spring-influenced conical member I, Fig. 1, sliding in a chamber E and bearing against a diaphragm H in a pipe S leading to the induction pipe. The valve is opened by a cable K connected with the carburettor lever. The amount of air admitted to the chamber E is determined by a cylindrical valve operated by a cable A under the control of the passenger. In the form shown in Fig. 8, the induction pipe T is fitted with a cylindrical valve comprising a perforated cylinder H<1> operated through a cable K<1> by the passenger and riding in a cylindrical fitting D<1>. The top of the cylinder is perforated and covered by a dished plate which, when the suction is excessive, closes the holes, against the action of a spring. In this form the valve may be temporarily closed by the driver through a cable R<1> and operating- lever P<1>.
Patent GB-1046085-A (GB)
Title: An information carrier for carrying information magnetically recorded thereon
IPC: B65G47/49
Filed: 1964-01-29
Abstract: A magnetic alloy having a coercivity from 25 to 30 Oe and a retentivity at least 10,000 Gauss consists of 60%Fe, 30% Co and 10% Cr.  Also mentioned is the alloy 52% Co, 36% Fe, 8% V and 4% Co.  The alloy is used in an information carrier in a conveyer apparatus.
Patent GB-953981-A (GB)
Title: Improvements in butterfly valves
IPC: F16K1/226
Filed: 1962-02-02
Abstract: 953,981. Valves. F. E. SWAIN. March 4, 1963 [Feb. 2, 1962], No. 4009/62. Heading F2V. In a butterfly valve of the kind in which the spindle 10 for the butterfly 9 is angularly or axially offset with respect to an annular recess containing a resilient seating ring 7 so that the seating surface is unbroken, two walls 2, 3 of the recess, connected by a radiused corner, are formed in the main body part 1 and the third wall 6 is provided by an element 5 which is adjustable to squeeze axially the seating ring to adjust its internal diameter to obtain an interference fit between the ring and the butterfly. The ring, which may be of rubber or rubber nitrile and contain a metal reinforcing ring has a frusto-conical mouth at one or both sides and is a slide fit in the bottom of the recess before compression by the element 5 which may be screwed, as shown, or flanged and secured by set screws to the body part 1 with a spacer to determine the compression of the ring 7. Specification 926,341 is referred to.
Patent GB-1284997-A (GB)
Title: Improvements in curtain suspension hooks
Inventor: SATCHWELL FRANCIS JOHN
IPC: A47H13/16
Filed: 1970-01-28
Abstract: 1284997 Suspending curtains THOMAS FRENCH & SONS Ltd 18 Dec 1970 [28 Jan 1970] 4065/70 Heading A4B A curtain hook comprises a first part, Fig.1 having one or more prongs 11 for engaging a heading tape and a pair of spaced arms 12 each formed with a slot 13, and a second part, Fig.3, having a hook portion 23 with a leg 21 provided with spaced pairs of protrusions 22 which are selectively engaged in the slots 13 to provide an adjustment of the spacing of the hook 23 from the free ends of the prongs 11. The first part includes on its side of the prongs 11 opposite the arms 12 a further pair of arms (18) Fig.2 (not shown) between which curtain pleats are retained. Each of the two parts may be formed in one piece as a plastics moulding.
Patent GB-783198-A (GB)
Title: Improvements in or relating to apparatus for the reproduction of multi-track magnetic records
Inventor: RICHARDS CLAUDE LANGDON
IPC: G11B23/00
Filed: 1955-02-11
Abstract: 783,198. Magnetic reproducing apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Jan. 25, 1956 [Feb. 11, 1955], No. 4086/55. Drawings to Specification. Class 40 (2). In an apparatus employing two or more closely spaced magnetic transducers for reproducing individual tracks one at a time, the reproduction of spurious signals from a neighbouring track is minimized by reducing the effective reluctance of the transducer in contact with such track to enable said transducer to act as a magnetic keeper. The reluctance reducing means may comprise a negative inductive inpedance connected across the winding and may be provided by an electronic amplifier having a positive feed-back path including a positive impedance.
Patent GB-161383-A (GB)
Title: Improvements in ring fittings for loose leaf ring books
IPC: B42F13/20
Filed: 1920-02-10
Abstract: 161,383. Finch, A. G., and Barr Engineering Co., Ltd. Feb. 10, 1920. Post files.-In a ring fitting for locse-leaf books, the pivoted half-rings A are mounted within a housing C having a channel D to receive and support them laterally, indentations d in the side walls of the housing C receiving the ends of the pivot pin B. Any known method of closing the free ends of the rings may be employed.
Patent GB-267286-A (GB)
Title: Improvements in display cards
IPC: G09F5/00
Filed: 1926-02-13
Abstract: 267,286. Horrocks, F. C. Feb. 13, 1926. Cards for displaying. - In showcards of the type which have openings to accommodate articles for sale, the aperture is formed by cutting out a flap d' of the material which is bent backwardly and outwardly to form a strut. The card face a is shaped and marked to represent an object connected with the displayed article c. The aperture embraces the article closely, and is elliptical in shape when a cylindrical article is shown.
Patent GB-513466-A (GB)
Title: Improvements in or relating to methods of treating and preserving food products and biological substances
IPC: A23L2/14
Filed: 1938-02-10
Abstract: 513,466. Food preserving; preserving liquids. FLOSDORF, E. W. Feb. 10, 1938, No.-4263. Convention date, March 19, 1937. [Class 49] A process for the concentration, drying and preservation of food stuffs and biological substances, e.g., liquid or semi-liquid fruit juices, vegetable products, protein solutions, blood sera, bacterial cultures, viruses &c., consists in subliming the water contained in the substance to be treated, by exposing the substance in a frozen condition in an enclosed chamber, without external refrigeration, to the action of a vacuum of 2.5 mm. of mercury or less, and of a heat-regenerable desiccant which draws only water vapour from the substance. Suitable desiccants referred to are anhydrous calcium sulphate; anhydrous lithium chloride; anhydrous copper sulphate, silica gel, aluminium oxide, anhydrous sodium sulphate and anhydrous barium perchlorate. Anhydrous calcium sulphate is preferred, this desiccant being prepared by reducing calcium sulphate dihydrate to the half-hydrate, and heating the halfhydrate at a temperature below 300‹C. To avoid frothing caused by removing dissolved gases under high vacuum, the substances are preferably subjected to a preliminary de-gassing by gradually reducing the temperature and maintaining a vacuum of from 1.5 mm. to 25 mm. of mercury, with or without the desiccant in use. The temperature during the de-gassing is kept above the freezing point of the substance while the pressure is maintained just above the point where frothing occurs. After de-gassing the substance is frozen with extreme suddenness, the substance then being maintained in the frozen state by the evaporation of the moisture, and without external refrigeration. The process may be effected in the apparatus described in Specification 513,562.
Patent GB-1535961-A (GB)
Title: Jet propulsion units or adaptions thereof
IPC: F02K7/08
Filed: 1976-10-26
Abstract: 1535961 Jet propulsion units H A KERSHAW 26 Oct 197 [4 Feb 1976] 4337/76 Heading F1J 4337/76 Heading F1J A jet propulsion unit comprises a means to displace a working fluid such as air in which a variation in the temperature of the working fluid occurs in a described manner.
Patent GB-1077171-A (GB)
Title: Improvements in or relating to means for retaining a pick in a box of a coal or like mineral-cutting machine
IPC: E21C35/19
Filed: 1966-02-01
Abstract: 1,077,171. Mineral-mining pick securing means; stud and socket fastenings. S. A. HART. Feb. 1, 1966 [Feb. 2, 1965], No. 4393/65. Headings E1F and E2B. [Also in Division F2] Spring clip for insertion into a part of a mineral-mining pick to prevent removal of the pick from a holder after insertion therein is formed of spring steel wire so bent as to have a central, elongated U shaped loop joined by coils to two legs extending in the same direction as the central U portion.
Patent GB-110693-A (GB)
Title: Improved Lifting Means for use in connection with Motor Road Vehicles.
Inventor: COULTAS FRED
IPC: B60S9/04
Filed: 1917-03-27
Abstract: 110,693. Coultas, F., and Pick, A. March 27, 1917. Driving auxiliary parts. - Mechanism for raising the vehicle comprises a lifting-arm pivotally attached to the vehicle and capable of being lowered into contact with the road and being pressed down by lowering its pivot by poweroperated means. The arm J is raised and lowered by means of the cords &c. J<3>, J<8> and the winding-drum J<7> driven by the engine. In the arrangement shown in Fig. 4, worm-wheel gearing J<15> is employed, the lifting arms J being pivotally attached to the wormwheels J<15> and the worms J<16> being driven by the engine of the vehicle.
Patent GB-538528-A (GB)
Title: Improvements in or relating to brooches, or like ornaments for wear
IPC: A44C1/00
Filed: 1940-03-09
Abstract: 538,528. Brooches, bracelets, pendants &c. GREENOUGH, S. March 9, 1940, No. 4442. {Class 43] A name, representation 4 &c. is permanently fixed to the bar 1 of a brooch, and insignia of rank &c. 5 is detachably secured to the bar by clip wires bent into a notch. The representation 4 may similarly be detachably secured to the bar. The invention may also be applied to bracelets, pendants and rings.