baber/WOPTO huggingface dataset:
Patent GB-1278210-A (GB)
Title: Improvements relating to semiconductir strain transducers
Inventor: JONES CHARLES TREVOR
IPC: G01L9/00
Filed: 1970-03-14
Abstract: 1278210 Strain gauges FERRANTI Ltd 19 April 1971 [14 March 1970] 12409/70 Heading G1N [Also in Division H1] A strain transducer comprises a semi-conductor body with a thin portion containing strain sensitive resistors and a thicker support portion on or in which associated circuitry is formed. A typical pressure transducer is made by diffusing the resistors and circuit elements and an intermediate isolating ring in a P type epitaxial layer on a N type silicon substrate, and then removing the central part of the substrate by etching followed by spark erosion to provide a thick rimmed diaphragm. The resistors the limbs of which run in a 111 direction consist of four parallel strips at the centre and two diametrically opposed pairs of U-shaped elements so disposed outside the neutral circle that their response is equal and opposite to that of the central strips. Associated circuitry comprising a constant voltage source and line or amplifier 28 is disposed in four peripheral segments. The best matched pairs of resistors are connected into a bridge circuit and to the associated circuitry by aluminium tracks on an oxide passivating layer and/or by gold wires, utilizing bonding pads located on the neutral circle and rim. As seen in Fig. 5, the silicon body 11 is sealed by epoxy resin into a titanium housing with its rim resting on ceramic ring 43. The housing may be plugged into an associated socket containing further circuitry. Trimming and temperature compensating resistors may be located in the silicon body or mounted separately within the housing.
Patent GB-1094435-A (GB)
Title: Process for the production of phosphonic acid esters
Inventor: KLEINE-WEISCHEDE KLAUS
IPC: C07F9/40
Filed: 1966-03-21
Abstract: Phosphonic acid mixed esters of formula <FORM:1094435/C4-C5/1> where R is C1- 18 hydrocarbyl, R1 is C1- 3 alkyl, and R11 is C4-18 alkyl, C7-18 aralkyl or C3-18 alkenyl (for preparation, see Division C2) are stated to be useful as hydraulic oils and motor fuel additives.ALSO:Phosphonic acid mixed esters of formula <FORM:1094435/C2/1> where R is C1- 18 hydrocarbyl, R1 is C1- 3 alkyl, and R11 is C4- 18 alkyl, C7- 18 aralkyl or C3- 18 alkenyl are prepared by heating a phosphonic ester RP(O)(OR1)2 with approximately equimolar amounts of R11X, where X is Cl, Br or I, in the presence of an alkali metal, alkaline metal, ammonium or organic-substituted ammonium salt of a hydrohalic acid or of a partially esterified phosphonic acid of formula RP(O)(OR)(OH). Examples prepare the methyl butyl, methyl isoamyl, methyl dodecyl, methyl allyl, methyl crotyl, and methyl benzyl esters of methylphosphonic acid, the ethyl butyl, and isopropyl dodecyl esters of ethylphosphonic acid, methyl butyl dodecylphosphonate, methyl butyl phenylphosphonate and methyl butyl 2-phenylethenylphosphonate.
Patent GB-1464138-A (GB)
Title: Transparent package
IPC: B65D75/52
Filed: 1974-03-21
Abstract: 1464138 Package GAO GES FUR AUTOMATION UND ORGANISATION mbH 21 March 1974 [21 March 1973] 12524/74 Addition to 1444285 Heading B8C In a package comprising a support member 1 having a collar which is folded over one end of a transparent plastics bag 6 containing, for example, bank notes, said end of the bag being heat-sealed to the overlying collar (2) and an underlying portion of the remainder of the support member 1, the support member has punched-out openings 4 and as a result of the heat-sealing, the bag is weakened in the regions of the punched-out portions 4 so that it may be readily separated along a tear-edge 9 of the collar. As shown the openings are triangular and notches 10 are formed, in the edges of the bag 6 during the heat-sealing. The ends of the bearing edge 9 of the collar are bevelled so that the collar does not cover the openings 4. The support member includes holes (3), Fig. 1 (not shown), for engagement with means for conveying and destacking the packages. The support member is also strengthened by potshaped projections (12), Fig. 5 (not shown), or embossed grooves (11), Fig. 6 (not shown).
Patent GB-590649-A (GB)
Title: Improvements in and relating to the construction of bicycles
IPC: B62K19/02
Filed: 1944-07-01
Abstract: 590,649. Cycles. ESTEVEZ, N. A. R. July 1, 1944, No. 12575. [Classes 136 (i) and 136 (iii)] A pedal-operated cycle comprises a pair of stiffened plate-like metal members 1 side by side and spaced apart and arranged to support between them the chain drive to the rear wheel in such a manner that the crank axis is considerably nearer to the rear wheel than it is to the front wheel. Lightening holes as shown may be provided in the plate members. The crank axle carries a ratchet wheel which moves freely past a link when the pedals are being rotated forwardly but on pedalling backwards the ratchet wheel engages the link and applies the rear wheel brake. The front forks comprise a pair of pressed plate members 19. Accessories such as pump spanners &c. may be mounted in the space - between the plate-like frame members.
Patent GB-466061-A (GB)
Title: Improvements in or relating to the corrugating and trimming of sheets of asbestos cement or the like when in plastic condition
IPC: B28B1/52
Filed: 1935-11-20
Abstract: Contains the same subject-matter as Specification 466,038, but the claims are directed to the trimming devices for the corrugated sheets.
Patent GB-1075881-A (GB)
Title: Improved dough conveyor apparatus
Inventor: RICHTER HELMUT
IPC: A21C9/08
Filed: 1965-03-25
Abstract: 1,075,881. Endless conveyers. VEREINIGTE BAECKEREIMASCHINENWERKE, HALLE/SAALE, VEB. March 25, 1965, No. 12636/65. Heading B8A. Apparatus for depositing pieces of dough on a stationary or moving member (not shown) comprises an endless belt 7 of which a portion 7a may be retracted (Fig. 2, not shown) to deposit the pieces of dough. The belt portion 7a passes around a roller 9 which is connected to a chain 1 and is reciprocated horizontally thereby. The ends of the chain are connected to a carriage 3 which derives a horizontal reciprocatory movement from a pin 15 engaging in a slot 16 in the carriage. The pin 15 is attached to a chain 14 intermittently driven by a sprocket and chain 10, 11. Each period of drive is sufficient to produce one complete reciprocation of the carriage 3 and of the conveyer portion 7a.
Patent GB-183934-A (GB)
Title: Improvements in electrical boiling rings
IPC: H05B3/68
Filed: 1921-05-03
Abstract: 183,934. Electric Fires, Ltd., Newhouse, F. L., and Smith, C. H. May 3, 1921. Electric hot-plates.-The radial refractorysupports i for the resistance coils h are held between washers f on a central stem e and an indented sheet-metal ring k mounted on a ring c carrying a spider d which holds the stem e. A reflector plate p is held to the stem e by a nut q. The terminals r are mounted on a separate panel s which forms an abutment for an enclosure t. A cover grid b is so placed that the bars y lie over and protect the refractory supports i, a triangular blank w covering the enclosure t in which the terminals are placed. Specification 153,308 is referred to.
Patent GB-746212-A (GB)
Title: Heavy-metal alloys of high specific gravity and good workability
IPC: C22C27/04
Filed: 1954-04-30
Abstract: A sintered alloy, particularly for coating pendulums of clocks with automatic gear, has a specific gravity of at least 17,5 and a composition: .Ni.1 - 3.per cent .Cu.1,5 - 5.per cent .Mo.0 - 5.per cent .W the remainder... the content of Cu exceeding that of Ni and the greater part of the W having a grain size of at least 15 microns.
Patent GB-236018-A (GB)
Title: Improvements in crystal detectors for wireless receiving purposes
IPC: H01L29/00
Filed: 1924-05-23
Abstract: 236,018. Wildey, E. M. May 23, 1924. Crystal detectors.-The cat's whisker 11 is adapted to be definitely positioned at any point on the crystal by eccentrially mounting the whiskerholder 8 in a rotatable bush or socket 5 eccentrically mounted in a second rotatable bush or socket 2. The socket 2 is mounted in a bracket 1 and is provided with a flange 3, the periphery of which is concentric with the hole 4 receiving the socket 5, while the socket 5 is provided with a flange 6. The flanges are each formed with a knurled portion and a plain portion which is divided for example into ten divisions so that bv using both sockets a hundred definite positions of the whisker are obtained. A cage 10 is frictionally held on the chuck 9 of the holder 8 so as to hold the free end of the whisker concentric with the holder. The crystal 18 is mounted in a cup 13 on a member 14 hinged at 26 to a bracket 22 which is formed or provided with a spring tongue 23 engaging a downwardly projecting portion of the member 14. The crystal is held in the cup by a spring 17 and cap 15 which is bayonetjointed to the cup 13.
Patent GB-568636-A (GB)
Title: Improvements in or relating to armoured vehicles
IPC: F41H7/02
Filed: 1944-09-06
Abstract: 568,636. Armoured vehicles. SMEATON, I. D., and SOCHACZEWSKI, S. Sept. 6, 1944, No. 12687/43. [Class 92 (i)] An armoured endless-track vehicle, normally carrying troops in seated positions, has the body divided into two superposed compartments the floors of which permit the troops to occupy prone positions, suitable for aiming rifles through apertures in main armoured front plates. Further, the rifle supports are formed by shield plates capable of lateral and vertical adjustments on the main plates. The vehicle is shown in Figs. 2 and 3 in fighting condition, the longitudinal channels for the endless tracks having covers 2, 3 which with bearers 3<x> form supports for removable cross -benches that normally serve as seats for the troops. To convert the vehicle to fighting condition, the benches are removed and replaced by expandable floorings 5, 5<x> forming supports for three prone gunners, the driver's seat 6<x> being moved to an inclined position so that the occupants can be covered by a sliding armoured roof 7. The gunners fire through apertures in plates 15 which fit over the front main armoured plates 11, 12 and are adjusted laterally in slots 37 Fig. 5 and clamped in position by bolts 19. The plates 15 have vertical openings for slidable and clampable plates 21 that have gun apertures 34 closed at the top by hinged plates 30. In a modification, Fig. 16, the plates 21 are replaced by plates 45 adjusted vertically and laterally by pivotal and sliding movements on a cross bar 43 fixed to the main plates 11, 12. Specification 555,356 is referred to.
Patent GB-1359931-A (GB)
Title: Non-woven carpet maerial with resilient backing and method of preparation
Inventor: NORRIS A H
IPC: D04H1/48
Filed: 1972-03-17
Abstract: 1359931 Non-woven fabric BIGELOWSANFORD INC 17 March 1972 [1 April 1971] 12689/72 Heading D1R [Also in Division B5] Carpeting material (see Division B5) includes a surface non-woven layer 10 which is vertically needled and has its surface portions 14, 18 bonded by heat-fusion. The layer may comprise polypropylene fibres, and is made by needling the fibres on a carrier from both sides. A cheesecloth 15 may be incorporated as the carrier or as an additional support. A surface non-woven layer 22 of e.g. acrylic fibres may be needled on to the wear surface 18, the heat-fusion at that surface being carried out either before or after providing the layer 22.
Patent GB-1477481-A (GB)
Title: Jet propulsion units or adaptions thereof such as a gas  turbine engine an air compressor or a gas generator unit
IPC: F02K7/12
Filed: 1975-02-19
Abstract: 1477481 Jet propulsion units H A KERSHAW 19 Feb 1975 [21 March 1974] 12727/74 Heading F1J A jet propulsion unit comprises a combustion tube 5 into which fuel is supplied through injectors 6, it being stated that the unit functions as a hot Venturi tube thermal cycle engine which utilizes a single stage jet type air compressor.
Patent GB-956517-A (GB)
Title: Process for the manufacture of gold sheets
IPC: B23K20/233
Filed: 1962-04-03
Abstract: 956,517. Making coloured gold sheets. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT. April 3, 1962 [April 12, 1961], No. 12770/62. Heading B3A. A method of making gold sheets with a polychromatic irregular pattern comprises applying to a supporting sheet of yellow, red or white gold small fragments of at least one gold alloy of a different colour, preferably having the same gold content, mechanically and/or thermally limiting the fragments to the support and rolling in one or more directions the composite metal obtained. Alternatively the fragments are welded or sintered on to the support in an inert atmosphere or gold soldered prior to rolling. Preferably the gold alloys used contain 585/1000 parts of gold. A yellow gold alloy comprises 585/1000 parts gold, and silver and copper having a ratio between them of 1: 2 and 2:1. A known red gold comprises 585/1000 parts of gold, 0 to 150/1000 parts of silver and the remainder copper. A white gold alloy contains gold, 100 to 200/1000 parts of palladium, and the remainder silver or 100/200 parts of nickel, zinc or silver and the remainder copper. The coloured fragments are produced from 0.4 to 0.5 mm. thick foil or are in the form of coarse powder or filing chips. Articles made from the material may be guilloched or glazed.
Patent GB-1422047-A (GB)
Title: 1,2,3-triazole compounds
IPC: C07D263/52
Filed: 1973-03-16
Abstract: 1422047 Triazole derivatives FARBWERKE HOECHST AG 16 March 1973 [16 March 1972] 12780/73 Addition to 1388867 Heading C2C Novel triazole derivatives of the Formula III wherein n is 1 or 2, R is a hydrogen atom, an organic radical or a direct linkage and Z is a group of the Formulae IV or V in which R 1  is a hydrogen or a halogen atom or a C 1-4  alkyl, amino, acylamino, nitro or C 2-5  alkoxycarbonyl group, R 2  is a hydrogen or halogen atom or a C 1-4  alkyl group or R 1  and R 2  together complete a benzene ring and R 3  is a C 1-4  alkyl group or an optionally substituted phenyl, benzyl or styryl group; are obtained by reacting compounds of the formula R<SP>1</SP> being a C 1-4  alkyl group or an optionally substituted phenyl group, with salts of hydrazoic acid at 0‹ to 200‹ C. Compounds bearing amino substituents may be obtained by reduction of the corresponding nitro compounds. The compounds of Formula I have optical brightening properties and are useful for the treatment of textiles. Examples illustrate the treatment of cotton and polyamide fabric.
Patent GB-1047866-A (GB)
Title: Improvements relating to photographic shutter timing apparatus
IPC: G03B7/083
Filed: 1964-03-26
Abstract: 1,047,866. Photographic cameras. INTER - NATIONAL POLAROID CORPORATION. March 26, 1964 [March 29, 1963], No.12870/64. Heading G2A. [Also in Division G1] A photographic camera shutter mechanism comprises a first shutter blade which is held in an open position by an electromagnet for a predetermined exposure time. The electromagnet is pulsed with a high current immediately prior to the release of another shutter blade initiating the exposure so that hysteresis in the magnet prevents premature release of the first blade on operation of the other blade. The shutter is initially cocked by actuating a lever 34, Fig. 1, whereby an arm 33 engages a rod 28 fixed to shutter vane 19 to push both vanes 19, 20 to the left until a pin 26 engages a latch 24. A keeper 40 on vane 20 completes the magnetic circuit of an electromagnet 37 operation of the release key 30 first closes a switch S 1  which connects the battery 56,Fig. 2, to the exposure control circuit. Transistor Q2 conducts to energize the electromagnet winding 38. Further movement of key 30 closes a switch S 5  which connects battery 56 across the winding 38 for a short period while latch 24 releases vane 19 to initiate exposure. This provides a high magnetic flux in keeper 40 to prevent premature release of vane 19 and also reduces the current needed from transistor Q2 to hold the electromagnet by utilizing the hysterisis effect. The release of vane 19 opens a switch 32, and capacitor C charges through the photoresistor 45. At a preset trigger potential, Q1 conducts, rapidly reducing the current through Q2 to an extent where vane 20 is released to terminate the exposure. Regenerative feedback provided by the common emitter resistor 53 increases the switching speed. Q1 is a planar silicon transistor, and resistor 60 limits the rate of discharge of C through Q1 when the latter conducts to give keeper 40 a chance to separate from electromagnet 37 before the current through winding 38 increases to its holding level again.
Patent GB-1469963-A (GB)
Title: Structures
IPC: E04B5/14
Filed: 1974-03-22
Abstract: 1469963 Floor or roof frameworks COMPAGNIE FRANCAISE D'ENTREPRISES METALLIQUES 22 March 1974 [30 March 1973 5 Dec 1973] 12940/74 Headings E1K and E1W A framework unit for supporting a floor or roof comprises a framework of peripheral latticework beams A and a plurality of latticework beams B extending across the framework and comprising an upper elongate member 7 at least one intermediate transverse bracing strut 4 and a lower pretensioned element 5, the lower ends of the bracing struts 4 of the unit lying in the same plane to facilitate ceiling fixing thereto. The upper member 7 may be a hollow rectangular section tube or an I beam and the lower element may be a round section rod or a strip of metal. Metal planking panels 8 may support an overlying layer of subsequently cast concrete or a roofing surface may be provided. The metalwork floor unit may be fixed to vertical stanchions 1 bolted end to end with similar elements in adjacent floors. Transverse bracing may be provided between stanchions 1. Ducts and services may run between the latticework elements.
Patent GB-418152-A (GB)
Title: Improvements in or relating to picture hooks
IPC: A47G1/16
Filed: 1933-05-04
Abstract: 418,152. Picture hooks. BONAGE, W. J., 8, Sydney Road, and LAX, W. L., Russell House, Peel Road, both in Gosport, Hampshire. May 4, 1933, No. 12964. [Class 89 (ii).] A picture hook has downwardly projecting points 11 which enter the downwardly sloping surface 7 of the picture rail, the portion 10 of the hook being bent to fit closely on to this surface. The hook may be formed from plate or from round wire.
Patent GB-291216-A (GB)
Title: Improvements in safety devices for use in connection with electrically heated elements
IPC: H05B1/02
Filed: 1927-05-14
Abstract: 291,216. Large, A. L. May 14, 1927. Addition to 269,969. Plug couplings.-The thermal cut-out of the parent Specification is improved or modified by the provision of means which prevent the connection of the two parts 1, 7 of the coupling if the safety capsule 12 has not been inserted or if the capsule has been inserted the wrong way round. For this purpose the detachable portion 1 of the coupling has fixed to it a pin 4 which is adapted to enter the open left hand end of the capsule 12 but which, if the capsule is the wrong way round, encounters its closed end 13. If the capsule 12 is absent altogether the pin 4 will encounter a spring pressed plunger 16 and so prevent connection. To insert the capsule into its hole in the part 7, an instrument (Figs. 3 and 4 not shown) adapted to depress the plunger 16 during insertion, may be used. In operation, when the solder connecting the tube 12 to its end piece 13 melts the spring 15 presses the tube 12 to the left and with it the part 1 of the coupling. The Provisional Specification states that the part 7 of the coupling may be connected to an immersion heater of the kind described in Specification 197,982, [Class 39 (iii), Heating by electricity].
Patent GB-1529514-A (GB)
Title: Catalytic reaction of hexafluoropropylene epoxide with a ketone or acid fluoride
IPC: C07B61/00
Filed: 1976-03-31
Abstract: 1529514 Etherified perfluoropropionyl fluoride E I DU PONT DE NEMOURS & CO Inc 31 March 1976 [2 April 1975] 12987/76 Heading C2C An etherified perfluoropropionyl fluoride of general formula wherein R a  and R b  are each F or optionally sulphonyl-substituted C 1-14  fluoroalkyl, fluoroalkoxy or fluoroalkoxyalkyl groups having 1-6 oxygen atoms, are prepared by reacting hexafluoropropylene epoxide with R a -CO-R b  in the presence of, as catalyst, a sulphonium halide or complex thereof. Suitable catalysts have the formula in which R 1  to R 3  are each C 1-20  alkyl, di(C 1-5  alkyl)amino or a saturated heterocyclic C amino group having N as part of the ring and 5-7 ring C atoms optionally substituted with C 1-5  alkyl groups and X is F, Cl, Br or I, particularly F. In the examples the catalysts used include and trimethylfluorosilane complex of tris-4- methylpiperidino sulphonium fluoride.
Patent GB-420523-A (GB)
Title: Improvements relating to lead pipes
IPC: B44B5/00
Filed: 1933-05-04
Abstract: 420,523. Squirting and embossing tubes. LYNE, E. A., and QUIRK, BARTON, & CO., Ltd., 39, New Broad Street, London. May 4, 1933, No. 13027. [Classes 83 (ii) and 83 (iv)] A lead or lead alloy tube is marked during extrusion on a raised longitudinal strip or ridge on the exterior surface of the tube. A roll 1 carrying numerals, letters &c. is supported on an axle 11 between arms 12 of a bracket, bosses 18 on the roll bearing against the inner faces of the arms 12. The distance of the roll from the axis of the die is varied by adjusting- screws 17, and the bracket is adjustable angularly by releasing bolts 16. The roll is aligned with a slot 10 in the working face of the die which produces the ridge on which the characters are impressed. The roll surface may be flat or concave, and the characters are preferably sunken. Radial slots may be provided in the roll to receive detachable characters.
Patent GB-853414-A (GB)
Title: Process for production of solid ethylene polymers and polymers so produced
IPC: C08F10/00
Filed: 1957-04-24
Abstract: Ethylene with or without at least one other unsaturated hydrocarbon, is polymerized using a suspension of a chromium oxide-containing catalyst in a liquid hydrocarbon diluent at a temperature such that all of the polymer produced is unsoluble in the diluent.  Propylene is the specified other monomer while propane, n-butane, n-pentane, isopentane, n-hexane, n-decane, 2,2,4 - trimethylpentane, cyclohexane, ethylcyclohexane, cyclopentane, methylcyclopentane, methylcyclohexane, the methylethyl cyclopentanes the methylpropyl and the ethyl propyl cyclohexanes, the dimethyl-cyclopentanes and the dimethylcyclohexanes, and mixtures thereof are specified diluents, The catalyst may comprise chromium oxide and at least one oxide selected from silica, alumina, zirconia and thoria.  It is preferred that the process is carried out at not lower than 150 DEG F.  The process may be continuous or batch and apparatus for carrying it out is described.  Specifications 790,195 and 804,641 are referred to.
Patent GB-184269-A (GB)
Title: Improvements relating to geysers, gas fires and the like
IPC: F24C15/00
Filed: 1921-05-09
Abstract: 184,269. Stimson, E. F. May 9, 1921. Washers.-Apparatus, which may operate intermittently, for withdrawing and absorbing combustion products from geysers, gas-fires, &c. consists of a closed chamber with a lateral gas inlet b, a perforated plate c through which is introduced a spray or rain of water, a hopper e, and draining-outlet f through which the washed gases pass with the water, and a buoyant ball g located in the hopper to vary the outlet in accordance with the supply of water and so preserve the suction effect. A sealed overflow pipe h below the level of the flue inlet pipe provides for the escape of water should the level rise unduly. A helically-vaned wheel j may be mounted within the chamber and set in rotation by the falling water to assist in entrapping the fumes. The water supply may be controlled interdependently with the gas supply to the gas-burning contrivance. The apparatus may be arranged to work intermittently, for example, by the use of an automatic rapidly discharging siphon, or a water-supplying device of the tipping-bucket or equivalent type.