baber/WOPTO huggingface dataset:
Patent GB-582832-A (GB)
Title: Improvements in and relating to hydraulic power presses
IPC: B64C13/00
Filed: 1944-09-02
Abstract: 582,832. Differential governors. WATSON, C. D. Sept. 1, 1944, Nos. 16761/44 and 7056/45. [Class 57] [Also in Groups XXIX and XXXIII] Means for synchronising hydraulic power elements such as jacks for operating aircraft wing flaps, comprises valves operated by the elements and adapted, when one element moves out of phase with another to connect it to pressure and return lines. As shown in Fig. 1, a valve 8b, rotated by the piston 3 of one element 1, connects pressure and return lines 12e, 12f, intermittently and alternately to lines 14a, 14b leading to a second rotary valve 9b driven by a piston 4 of the second element 2. Lines 14a, 14b are placed intermittently in communication with pipes 15a, 15b, leading to opposite ends of the element 2, by the valve 9b. The ports and passages of the respective valves are so arranged that while the elements are in synchronism, they open at different times, but should one element move out of phase, a direct connection between the pressure and return lines and element 2 is established through the valves whereby synchronism is restored. In another arrangement, Fig. 7, lift valves 24b, 24c, actuated by a cam 30 rotated by movement of piston 22b of one element are adapted to connect pressure and return lines 28, 29 alternately to a valve 25b actuated by a cam 41 rotated by the piston of the second element. Normally the valves open at different times, but should lack of synchronism occur between pistons 22b, 23b, then valve 25b opens at the same time as either 24b or 24c according to whether the piston 23b leads or lags piston 24c. Direct communication is then established between the cylinder containing piston 23b and either the pressure or return line, thereby restoring synchronism.
Patent GB-784990-A (GB)
Title: Improvements in or relating to dynamic seals and material for making them
IPC: F16J15/20
Filed: 1954-06-08
Abstract: 784,990. Proofing against air and liquids; impregnated bearing surfaces; laminates. PRECISION RUBBERS, Ltd., and BLOW, C. M. July 13, 1955 [June 8, 1954; Feb. 14, 1955], Nos. 16763/54 and 4340/55. Class 140. [Also in Group XXVI] A flexible seal of washer, cup or U-section form for pneumatic or hydraulic application is made from a material comprising long-fibred tissue or unwoven fabric sheet impregnated and/or coated with a rubber or rubber-like composition comprising natural or synthetic rubber compounded with a high-styrenebutadiene copolymer together with vulcanizing ingredients, the sheets, if necessary, being combined in two or more layers. The fibrous material may be long-fibred manilla tissue paper which may contain rayon fibres or may be carded or garnetted cotton and/or rayon fibres bonded into handleable form by rubber or similar materials. The rubber composition dissolved in a solvent such as benzene, together with the vulcanizing ingredients, is applied by immersing the sheet in the solution or by spreading the solution on one or both surfaces; different compositions may be applied to opposite surfaces and antifriction material such as graphite may be added to one of the compositions. Where several sheets are placed together to form a laminated material, sheets unimpregnated or only lightly impregnated with the rubber composition may be incorporated in the material and are preferably placed on one or both outer surfaces so as to give a greater proportion of fibrous material at the outer surface or surfaces; a high proportion of graphite may be added to the unimpregnated layers.
Patent GB-224831-A (GB)
Title: Improvements in supports for tennis and like nets
IPC: A63B61/02
Filed: 1924-07-14
Abstract: 224,831. Wright, H. L. July 14, 1924. Wire strainers; ground anchors.-A support for tennis and like nets of the kind comprising a post mounted for rotation about its own axis for raising or lowering the net and retained against undesired movement by friction, is provided with a groove formed by a pair of external flanges for the reception of the net rope. As shown, the post comprises a tube 1 strengthened by a liner 2 and closed at its upper end by a knob 3 having a shank 4 adapted to act as a tommy bar. The lower end of the post fits into a socket 13 cast into a base 12 which is sunk below the ground. A transverse pin 11 limits the downward movement of the post in the socket. Flanges 6, 7 projecting from the post form a groove for the reception of the net rope. In a modification the tube 13 is replaced by a spigot which fits into the interior of the post 1.
Patent GB-126897-A (GB)
Title: Improvements in Apparatus for Lighting Fires by means of Gas.
Inventor: FISON FREDERICK JONATHAN
IPC: F23Q13/00
Filed: 1918-10-16
Abstract: 126,897. Fison, F. J., and Lynn, G. W. Oct. 16, 1918. Lighting fires.-A device for lighting fires in stoves consists of a portable collapsible gasholder, adapted to be charged from ordinary gas pipes, with a burner. Fig. 1 shows a gas holder consisting of a rigid vessel A with a flexible upper part C surmounted by a disk B and rigid cover D. The gas-holder is filled by means of a. pipe connected to a cock K, which is then closed. The cock supplying the burner attached to the part A is then opened, and the gas flowing from the burner is ignited. A rod F passes through the guide E, and receives a variable weight P which forces the gas out through the burner. The gas holder may be telescopic, and may be charged by a compressor. The cock K and the cock controlling the gas burner may be replaced by a three-way cock. A spring G is placed between the parts B, E to relieve the strains on the flexible portion C of the gas-holder.
Patent GB-146113-A (GB)
Title: Improvements in dust-caps for tire-valves
IPC: B60C29/06
Filed: 1920-06-22
Abstract: 146,113. Ward, J. T. April 19, 1918, [Convention date]. Dust-caps for tyre valves.-A dust-cap for a tyre valve is secured in position by a bayonet-catch device arranged inside the valve cap. The cap 16, which is made cylindrical at its lower end to slide over a boss 10 formed on a base part secured to the valve casing, is fitted internally with a spring 22 arranged between a shoulder 18 and an annular ring 21 supported by lugs 20 or by the top of the base portion. The lugs are adapted to be pressed through slots 14 into a groove 13 when a part rotation will bring them into engagement with recesses 15 formed in the under surface of the flange 12 to hold the cap in position.
Patent GB-197225-A (GB)
Title: Improvements in or relating to shock absorbers
IPC: F16F9/02
Filed: 1922-06-19
Abstract: 197,225. Forrester, H. J. C., (Diamond Air Springs Co.). June 19, 1922 Pneumatic springs.-A pneumatic shock-absorber for use between two parts of the spring suspension of a vehicle or between the chassis and a part of such suspension comprises a cylinder 1 closed at the upper end by a screwed dome 2 and at the lower end bv a screwed breech block 3 which guides a rod 9 having a piston 10 secured to its upper end by a nut 12, which also secures a packing washer 15 between a plate 16 and the top of the piston, the cylinder being divided by the piston into two chambers of which the upper contains oil &c. 17 and compressed air introduced through a valve 18 and the lower contains air normally under atmospheric pressure but compressed on rebound both in the part 19 between the piston and the upper reduced part 7 of the block 3 and in the annular space 8 surrounding the part 7 by the depending side wall 13 of the piston telescoping into such annular space. Any oil leaking past the washer 15 collects at the bottom of the space 8 and is pumped back into the upper chamber through a space 14 between the wall 13 and the cylinder by the action of the wall 13 in the space 8.
Patent GB-942439-A (GB)
Title: Improvements in a method of manufacturing tubes
IPC: B21C37/20
Filed: 1962-05-03
Abstract: 942,439. Making helically finned tubes; twisting. BABCOCK & WILCOX Ltd. May 3, 1962 [May 5, 1961], No. 17034/62. Headings B3A and B3E. A method of making tubes with helical striae for use in heat exchangers and vapour generating plant comprises applying torsion to a tube having longitudinal striae so as axially to twist the tube and impart to it a permanent twist and a helical form to the striae. A tube having longitudinal external and/or internal striae is clamped at one end and fitted with a spaced apart second clamp rotatable about the tube axis and which applies torsion to the tube between the clamps to deform the tube axially and twist the striae to a helical form. Additional freely rotatable anti-buckling clamps or sleeves are fitted along the length of the tube between the two clamps or a mandrel inserted in the bore. The tube may be externally or internally heated to facilitate twisting and the clamping devices water cooled. The speed of twisting may be controlled by the speed at which the heating appliance e.g. a ring of gas flame is passed through the bore. A tube formed with internal striae is twisted a predetermined amount greater than that required, prior to forming on the tube external striae, the tube is then twisted in the opposite sense to that of the first operation by an amount equal to the excess twist imparted to the internal striae. Pitch variations are obtained by means of clamps positioned at various points along the tube length.
Patent GB-863015-A (GB)
Title: Improvements in or relating to pneumatically-operated positioning devices
Inventor: WILLIAMS NORMAN
IPC: G11B5/55
Filed: 1957-05-30
Abstract: 863,015. Electric digital-data-storag; apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 28, 1958 [May 30, 1957], No. 17150/57. Class 106 (1). [Also in Group XXVIII] A pneumatically operated positioning device, e.g. for positioning the read/write head of a magnetic drum store, comprises a nest of at least three members each movable by pneumatic control in a common axial direction. The device may comprise a nest of piston/cylinder members movable axially one within another, or an arrangement of piston-cylinder combinations operating in parallel axes. Fig. 1 shows a nest of pistons 1, 2, 3 and an outer cylinder casing 5, the pistons 2, 3 forming cylinders for the inner pistons 1, 2 respectively, and leakage from the cylinders being prevented by piston rings 10. Piston 1 is fixed and a magnetic head is carried by casing 5. In operation, air pressure is applied to one of each of the pairs of inlet tubes 6L, 6R; 7L, 7R and 8L, 8R and causes a corresponding movement to the left or right of piston 2, piston 3 and casing 5 respectively. The extent of these movements corresponds to the ratio 1: 2: 4, the air pressure being selectively applied to the inlet tubes in accordance with a 3-digit binary number obtained e.g. from an electronic digital computer. The magnetic head is thus positioned opposite a required track on the drum. In the alternative arrangement, a fixed plate 16, Fig. 2, carries a piece 18 which provides a cylinder 15, with a central dividing wall 15A, and a sleeve bearing 19. A double piston 21, Fig. 3, which fits in cylinder 15, is connected by frames 24 to guide sleeve 25 which moves in bearing 19 and to a further cylinder 23 which fits in guide aperture 17A, Fig. 2. Similarly, a further double piston (not shown) fits in cylinder 23 and is connected to a sleeve guided in sleeve 25 and to a cylinder guided in aperture 17B. A third double piston working in this latter cylinder carries the magnetic head. A cylindrical block (Fig. 5, not shown) may replace the plate 16.
Patent GB-1457262-A (GB)
Title: Magnetic positional control systems
IPC: G01D5/14
Filed: 1973-04-10
Abstract: 1457262 Automatic control systems BRENTFORD ELECTRIC Ltd 9 July 1974 [10 April 1973]  17185/73 Heading G3R The position of a magnet, on a first body, relative to a second body is maintained constant by controlling the magnet according to the measurement of the relative position of the two bodies and the magnetic force between the magnet and the second body. In the embodiment shown, bar 10 supports a permanent magnet 2, having control windings 5, 6, and another permanent magnet 19. Signals according to the relative position, and its rate of change, of magnet 19 and bar 9 are obtained from Hall probe 18 and coil 22 respectively. These signals are combined and compared with a position reference such that any position error, after passing through a phase change filter 26, is compared at 27 with the force between magnet 1 and bar 9 as measured by Hall probe 28. Any difference is used by amplifier 29 to vary the energization of windings 5, 6 and thus to regulate the force between, and position of, bars 9 and 10. Hall probe 18 is fed with a current that is varied so as to keep the probe Hall voltage constant, the current being indicative of the relative position between magnet 19 i.e. bar 10 and bar 9. Hall probe 29 is fed with constant current so that its Hall voltage is indicative of the flux, and thus the force, between magnet 1 and bar 9, which may be steel or a permanent magnet. In alternative embodiments, magnet 1 may be electromagnetic (i.e. permanent magnet 2 omitted) or the control windings 5, 6 replaced by a central polepiece whose position is controlled, using a hydraulic system, by amplifier 29. The positional control may be used in a suspension, levitation or guidance system for vehicles.
Patent GB-241289-A (GB)
Title: Improvements in or relating to valve generators of electrical oscillations
IPC: H03F1/16
Filed: 1924-07-17
Abstract: 241,289. Franklin, C. S., and Green, E. July 17, 1924. Thermionic amplifiers and generators. - In a transmitting or receiving amplifier, particularly for oscillations of short wave-length, the reaction effect due to capacity between grid and plate is balanced out by a Wheatstone bridge of which one arm includes the grid-plate capacity. The input and output circuits of the amplifier are connected as the respective diagonals of the bridge, and each is arranged symmetrically with respect to the earth. A second valve, excited in opposite phase to the first, may have its gridplate capacity connected to form the arm of the bridge opposite to that occupied by the first valve. In Fig. 1, the grid G and plate A are connected as one arm of the bridge, the other three arms being formed by preferably equal capacities C<1>, C<2>, C<3>. Equalizing resistances r1 - - r<4> may also be connected in the arms. The input circuit V, R<1>, R<2> is connected across the diagonal 3, 4 and the output circuit L<1>, L<2>, K<1>, K<2> across the other diagonal 1, 2, these circuits having no mutual coupling when the bridge, is balanced. The input and output circuits are rendered symmetrical with respect to the earth, by connecting them to earth at electrical mid-points between the equal condensers R<1>, R<2> and K<1>, K<2> respectively. The high tension is applied to the plate A at a point X between the equal coils L<1>, L<2>; and the grid-biassing potential is applied by a battery B to a point between two equal resistances W<1>, W<2> connected across the input circuit. A condenser Z shunts the battery B. The point 3 is connected to earth through a condenser n equal in capacity to that between grid G and filament F. When a second valve is employed on the push-pull principle, the condensers C<2> and n are omitted, the grid of the valve being connected to the point 3, the plate to the point 1, and both filaments earthed. The arrangement may be applied to a series of amplifiers in cascade, and is particularly applicable for connecting short-wave oscillators to one or more power amplifiers, its purpose then being to render the frequency of the drive oscillator completely independent of the output circuit and of the capacity to earth of its elements.
Patent GB-787757-A (GB)
Title: Improvements in parachute packs
IPC: B64D17/52
Filed: 1955-06-15
Abstract: 787,757. Flying suits. GREGORY, J. June 4, 1956 [June 15, 1955]. No. 17247/55. Class 141 [Also in Group XXXIII] A flying suit having arms 11 and legs 12 has a pillow member 22 at the back of the collar 21, the member being inflatable for life saving purposes, and the back of the suit forms the base of a parachute pack completed by cover flaps 14. The upper ends of the flaps are fitted with press-studs 20 for engagement with the collar 21, and with press-studs 18 for engagement with a strap 19 secured to the collar. The canopy is stowed in zig-zag fashion between two opposed series of pockets 27. Specifications 449.324 [Group XXXIII], 525,118, 531,882, and 531,884 [both in Group XXXIII] are referred to.
Patent GB-1427104-A (GB)
Title: Fluorelastomer composition
IPC: C08K13/02
Filed: 1974-04-19
Abstract: 1427104 Curing fluoroelastomers DAIKIN KOGYO CO Ltd 19 April 1974 [21 April 1973] 17251/74 Heading C3P Curable fluoroelastomer compositions comprise (a) a fluoroelastomer, especially vinylidene fluoride/hexafluoropropene or vinylidene fluoride / tetrafluoroethylene / hexafluoropropene copolymers; (b) at least one metal compound which is a bivalent metal hydroxide or hydroxide or mixture thereof with a metal salt of a weak acid, the compound used in examples being MgO; (c) an aromatic polyhydroxy compound, e.g. resorcinol or bisphenols A, B or AF; (d) a compound of formula in which R is C 1 -C 24  alkyl or C 7 -C 20  aralkyl and X- is a halide, hydroxylate, alkoxylate, carboxylate, phenoxide, sulphonate, sulphate, sulphite or carbonate anion, a typical compound being 8 - benzyl - 1,8 - diaza - bicyclo[5,4,0]- 7-undecenium chloride; and (e) 1,8-diaza-bicyclo[5,4,0]-7-undecene in an amount insufficient to cure the elastomer in substance. Water may also be present, as such or as a hydrated salt, or produced in situ by reaction of a metal hydroxide, e.g. Ca(OH) 2 , with HF. Fillers, plasticisers, colourants and other curatives may also be present.
Patent GB-1269384-A (GB)
Title: Air or gas compressing equipment
IPC: F04D29/58
Filed: 1969-04-02
Abstract: 1,269,384. Rotary positive-displacement compressors. DEMAG A.G. April 2, 1969 [Aug. 31, 1968], No. 17335/69. Heading F1F. In air, or gas, compressing equipment an aircooled I.C. engine 1 drives a compressor 2 into which a liquid e.g. oil, is injected for cooling and sealing purposes, a heat-exchanger 8 through which said liquid circulates being cooled by the air stream (indicated by arrows) that cools the engine and is generated by a fan or blower (not shown) provided on the engine. When the compressor is not in use the heat-exchanger can be employed to cool a liquid from a source external to the compressing equipment, which source may be hydraulic equipment. In another embodiment, Fig.4 (not shown), the compressor has two stages and the heat-exchanger is used as an inter-cooler when the compressor is operating. The specification also describes what is stated to be known equipment in which an additional fan or blower supplies air to a cooler for said liquid or to an inter-cooler, Figs.1 and 3 (not shown).
Patent GB-383909-A (GB)
Title: Improvements in and relating to mercury vapour rectifiers
IPC: H01J13/12
Filed: 1932-06-20
Abstract: 383,909. Mercury-vapour rectifiers. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. June 20, 1932, No. 17441. Convention date, June 20, 1931. [Class 39 (i).] In a rectifier having a metallic cathode vessel 4 sealed to a metallic casing 1, an insulating ring 11 which protects the seal 3 is forced against a removable screen 12 by means of compression springs 16. The springs are housed within caps 17 and are contained in recesses in the cathode vessel. Movement of the caps within the recesses is limited by stops 25. The ring 11 is axially registered by means of leaf springs 22 bearing against the side of the ring. These springs are mounted on members 21 which slide radially within grooves in the caps and are secured after the ring has been mounted in position by bending their ends over the edges of the caps or over members crossing the grooves. The screen 12 is spaced from the casing by members 13 having holes through which the condensate returns to the cathode.
Patent GB-1001129-A (GB)
Title: A device for testing ink films
Inventor: CARTWRIGHT PETER FRANK SEDGELE
IPC: G01N33/32
Filed: 1963-05-02
Abstract: 1,001,129. Testing physical properties of ink. METAL BOX CO. Ltd. March 3,1964 [May 2, 1963],No. 17450/63. Heading G1S. The "tackiness" of a printing ink is found by measuring the force required to split a film of the ink of given weight applied to a rotating inking roller 13 and engaged under constant pressure by a metering roller 7, which is freely rotatable in the forked end of a rod 1, arranged so that the displacement of the rod 1, when pulled by the film against a spring 2, is a measure of the tension applied. The displacement may be measured by a dial gauge 11 or with a suitable electrical transducer. The constant pressure between the roller 7 and ink film on the roller 13 is provided by the weight of the measuring apparatus when hooked on to the printing machine.
Patent GB-169517-A (GB)
Title: Improvements in and relating to chairs for young children
IPC: A47D1/10
Filed: 1920-06-26
Abstract: 169,517. Morgan, P. C. P. June 26, 1920. No Patent granted (Sealing fee not paid). Nursery seats.-A folding chair, for use as a nursery chair, is made removably attachable to an upright or a horizontal support, and is provided with means for rigidly maintaining it in its erected condition. Fig. 1 shows such a chair, comprising a hinged seat member a, pivoted legs b, d, pivoted arm-rests l, and a strut o in the form of a hook, while in Fig. 4 a modification is shown having hinged links 3, 4. The pivoted arms l may engage the top of the legs d by means of a hole and dowel m, while the chair may be secured in position by attachment straps q or by the clamping-device shown in Fig. 5.
Patent GB-908367-A (GB)
Title: Improvements in ventilators for windows
IPC: E06B7/06
Filed: 1960-05-18
Abstract: 908,367. Ventilators. GREENWOOD'S & AIRVAC VENTILATING CO. Ltd., and HUGHES, B. D. May 12, 1961 [May 18, 1960], No. 17508/60. Class 137. A method of producing a ventilator disclosed in Specification 662,498 comprises forming separately a pair of end pieces which will close the opposite ends of a hood or cover element, and extruding the remaining parts, that is the hood or cover element and a plate element from aluminium or other suitable material, and assembling the parts together. As shown, a ventilation opening is formed between a plate element 1 and a cover element 2 held in spaced relation by a pair of end pieces 3. The extruded cover element 2 has a longitudinal arcuate recess 8 forming a pivot socket for a closure flap 9. A perforated metal guard extends across the opening between the Y-shaped end of the plate element 1 and a recess 31 in the cover element 2. The closure flap 9 is controlled by a lever mechanism 33, 34 operated by cords 36. Each end piece 3, Fig. 4, has on its inner face an indirect weather lip 37 for sealing the closure flap 9 against the end piece when the ventilator is closed. Screw apertures 18 are provided in the end pieces for securing the adjacent ends of the cover element 2 and the plate element 1 to each of the end pieces 3, but in another embodiment (not shown) slots are provided to receive and secure these ends. The Provisional Specification also refers to Specification 820,242.