baber/WOPTO huggingface dataset:
Patent GB-1391959-A (GB)
Title: Semiconductor devices
IPC: H01L27/088
Filed: 1972-07-20
Abstract: 1391959 Integrated circuits FERRANTI Ltd 13 July 1973 [20 July 1972] 34044/72 Heading H1K An integrated circuit includes a first IGFET formed in a monocrystalline semiconductor body and a gated resistor formed in a polycrystalline layer disposed on and separated from said body by an insulating layer. As described the IGFET and gated resistor are connected in series across a power supply with their junction connected to the gate of a further IGFET which with its series resistive load is likewise connected. In operation application of a suitable potential to the gate of the first IGFET charges the gate capacitance of the further IGFET via the gated resistor, a potential being applied to the gate of the resistor to render it non-conductive on completion of charging to prevent wasteful topping up of the capacitance prior to its discharge via the first IGFET in a rapidly following operation. The first IGFET gated resistor combination shown in plan in Fig. 3 is formed on an N-type silicon wafer by suitably aperturing an overall silicon oxide layer, regrowing thinner oxide in the apertures, depositing 20 ohm. cm. polycrystalline P-type silicon overall and selectively etching it to define the self-registering gate 28 of the first IGFET and its associated conductive track 30 and the body 17 in which the resistor is formed, providing a further oxide mask exposing the source and drain sites of the IGFET and resistor and the gate of the IGFET, and the sites of associated conductive tracks 14, 15 and 30, and diffusing these with acceptor impurity, reforming the oxides and etching contact apertures 41-44 and then depositing aluminium overall and etching back to provide the contacts and interconnections shown and the gate 17 of the resistor.
Patent GB-953168-A (GB)
Title: Improvements in or relating to belt fasteners
Inventor: TEBB BERNARD
IPC: F16G3/04
Filed: 1959-10-08
Abstract: 953,168. Belt fasteners. MASTABAR MINING EQUIPMENT CO. Ltd. July 8, 1960 [Oct. 8, 1959], No. 34072/59. Heading F2Q. In a wire hook belt fastener, wherein a hook 14 comprises, on one limb, at least two points 16, 17 and, on the other limb, a corresponding number of abutments, such as 18, 15, over which the points, after being passed through a belt, are bent away from the belt end, the limbs comprise at least two thicknesses of wire which are contiguous at least along the point-carrying limb, there being one point for each thickness of wire. As shown, several hooks are formed as a unit and each hook comprises one length of wire pointed by grinding at both ends to form a two-pointed hook having a loop which provides one abutment 18, a connecting bar 15 to which the hooks are welded providing the other abutment. Alternative hooks comprise single wire lengths with differing loop forms, Figs. 2, 3, 4 (not shown), and separate wire lengths having an additional bar welded thereto to provide an abutment for point 16, Fig. 5 (not shown).
Patent GB-1272262-A (GB)
Title: Detecting faults in electrical transmission lines
Inventor: SOUILLARD MICHEL
IPC: G01R31/08
Filed: 1969-07-07
Abstract: 1,272,262. Protective arrangements. COMPAGNIE DES COMPTEURS. 7 July, 1969 [5 July, 1968], No. 34091/69. Heading H2K. An arrangement for discriminating between asymmetric faults in a three phase transmission line, comprises means 101 ... 103 for producing signals Vo, V ia , V da  related to the phase sequence components of the voltages and/  or currents of the line and phase angle responsive comparators 106, 107 and 115 for each phase of the line. The comparator 106 produces an output signal when the phase angle between the zero sequence signal Vo and the negative phase sequence signal V ia  of the respective phase is less than 60 degrees, i.e. when there is a single phase/earth fault involving the respective phase or a two phase/ earth fault involving the other two phases. The comparator 107 produces its output signal when the angle between the negative components V ia  and the positive component Vd a  is greater than 90 degrees, i.e. when there is a single phase/earth fault. The outputs from the comparators 106, 107 and that from an earth fault detector 105 are applied to an AND element 108, which has an output signal only when a single phase/earth fault exists on the respective phase. The same outputs, except that that from the comparator 107 is inverted, are applied to an AND element 109, which has an output signal only when there is a two-phase/earth fault involving the other two phases. The comparator 115 produces a signal when the angle between the negative and positive components is less than 60 degrees, i.e. when there is a two phase fault involving the other two phases. This last signal together with one at 113 indicating a fault not involving earth are applied to an AND element 117 which has an output signal when there is a two-phase fault involving the other phases but not earth.
Patent GB-193579-A (GB)
Title: Improvements in and relating to electric conductor terminals
IPC: H01R4/50
Filed: 1921-12-19
Abstract: 193,579. Ford, E. V. Dec. 19, 1921. Cable and wire terminals.- An electric conductor terminal comprises a threaded sleeve 11 on the end of an attaching plate 10 and a co-operating sleeve 18 having a conical opening 21 which acts upon the inclined faces of a pair of serrated conductor gripping jaws 14 which are connected at their lower ends to the upstanding arms of a U- shaped spring plate 17 adapted to seat in the base of the sleeve 11.
Patent GB-282747-A (GB)
Title: Improvements in electric furnaces
IPC: H05B7/105
Filed: 1927-12-17
Abstract: 282,747. Soc. Electro-Metallurgique de Montricher. Dec. 28, 1926, [Convention date]. Direct connections between conductors.- A furnace electrode is supplied with current by segments 22 formed with inclined faces engaging a ring 5 suspended by rods 34. The segments are forced against the electrode by screws 4 engaging the ring and lugs on the segments. The segments are supplied with current from a conducting ring 35.
Patent GB-808397-A (GB)
Title: Improvements in or relating to person-lowering device
IPC: A62B1/10
Filed: 1956-11-08
Abstract: 808,397. Climbing apparatus. FAUGIER, G., and FERTIER, R. Nov. 8, 1956 [Nov. 24, 1955], No. 34206/56. Class 132(1) [Also in Groups XXX and XXXIV] A rock climber descends a vertical fixed rope by attaching himself to casing 2, the rope passing round pulley 4 mounted there in, and the pulley being provided with a hand-operated steel brake band 17 adjusted by nut 16 and with the automatic brake disclosed in Specification 799,174 [Group XXX].
Patent GB-424988-A (GB)
Title: Improvements in rotary vacuum pumps
IPC: F04C23/00
Filed: 1933-12-05
Abstract: 424,988. Rotary pumps. BANCROFT, F. E., 19, Delaine Road, Withington, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Dec. 5, 1933, No. 34211. [Class 110 (ii)] A rotary vacuum pump comprises a rotor in two portions 8, 9, and a driving gear 10, mounted in bearings 11, 12. Each rotor contains a pair of radial vanes separated by springs, the pairs preferably being at right angles to one another. The two rotors may form first and second stages of a pump, the whole being sealed and lubricated by oil in an outer casing 7. A driving spindle 19 is provided with an oil groove 23 for sealing against admission of outside air. An oil inlet valve 26 to the intermediate chamber 21, which lies between the pump stages, contains a threaded spindle 35 having a flat 36 along which oil passes from a strainer 38, to a duct 33 leading to the chamber 21. A slot 37 permits radial expansion of the screw thread. When the pump is stopped, the oil level falls below the flat 36, and air flows in from a vent 39. The two pump stages may be in parallel. Side thrust on the spindle 19, due to pressure differences on its ends, is balanced by means of helical threads on the gears 10, 18.
Patent GB-940193-A (GB)
Title: Right angle heat dissipating tube shield
Inventor: MCADAM JOHN C
IPC: H05K7/20
Filed: 1961-09-25
Abstract: 940,193. Holders for thermionic valves. INTERNATIONAL ELECTRONIC RESEARCH CORPORATION. Sept. 25, 1961, No. 34233/61. Heading H2E. [Also in Division H1] A right-angle shield mount for electronic tubes comprises a block 15 of dielectric material containing pin and socket contacts 26 and 24 respectively and leads 27 connecting them, a heat-conducting base-plate 16 comprising a portion 32 secured to the block and another portion 33 extending outwardly from the block, and an envelope 36 attached to the part 33 to hold a tube 17 in heat-conducting relationship with the surface 41 of a metal heat-sink plate 11. Leads 27 and contacts 24, 26 are moulded or potted in block 15, and resilient covers 27<SP>1</SP> to the leads may hold them semiflexibly. Block 15 is mounted on a printed circuit board 12 through which pins 26 extend to be soldered into the printed circuit 14 on the lower side of board 12, and the base 16 lies above and is riveted to metal plate 11. With tube pins 19 in sockets 24 the sides of the non-resilient envelope 36 are wrapped around the tube and pressed in uniform engagement therewith by fingers 39 of spring clip 40. An arcuate plate 45 soldered to the clip 40 has resilient heat-conducting arms 44 terminating in fingers 47 pressed against a secondary heat-sink 43. In one modification, Figs. 4, 5 (not shown), parts 45, 44, 47 are replaced by a contact with spring fingers, and in another, Fig. 7 (not shown), the contact is cut out of the clip 40 and pressed outwards to form a loop which is primarily intended as a means to remove the clip.
Patent GB-381774-A (GB)
Title: An improved filling for dental purposes
IPC: A61K6/00
Filed: 1931-12-10
Abstract: Dental root canal points or tooth stoppings are made of guttapercha which has been rendered semi-rigid by incorporating finely divided silver therewith or by applying a thin coating of silver thereto. According to examples (1) guttapercha is dissolved in chloroform or other solvent, finely divided silver is added, or is produced in the solution by electric disintegration or by precipitation, and the solvent is allowed to evaporate to leave a pasty mass which is allowed to set in moulds; (2) shaped pieces of guttapercha are placed in a strong aqueous solution of silver nitrate and are then removed and treated with hydroquinone or other photographic developer so as to produce a deposit of silver on their surfaces.  The Specification as open to inspection under Sect. 91 (3) (a) refers also to the preparation of a mixture of guttapercha and silver to be put up in collapsable tubes in semi-liquid form still containing solvent.  This subject-matter does not appear in the Specification as accepted.ALSO:Dental root canal points or tooth stoppings are made of guttapercha which has been rendered semi-rigid by incorporating finely divided silver therewith or by applying a thin coating of silver thereto.  According to examples, (1) guttapercha is dissolved in chloroform or other solvent, finely divided silver is added, or is produced in the solution by electric disintegration or by precipitation, and the solvent is allowed to evaporate to leave a pasty mass which is allowed to set in moulds; (2) shaped pieces of guttapercha are placed in a strong aqueous solution of silver nitrate and are then removed and treated with hydroquinone or other photographic developer so as to produce a deposit of silver on their surfaces.  Root canal points of guttapercha only or of silver or silver alloy only are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of silver points surrounded by guttapercha containing finely divided silver, and to the preparation of a mixture of guttapercha and silver to be put up in collapsable tubes in semi-liquid form still containing solvent, and states that the bactericidal effect of the silver may be increased by washing it in hydrogen peroxide or by passage of a high frequency current for a short time.  This subject-matter does not appear in the Specification as accepted.
Patent GB-212965-A (GB)
Title: Improvements relating to boring, facing and like machines
IPC: B23B29/034
Filed: 1922-12-15
Abstract: 212,965. Pearn, W. A. Dec. 15, 1922. Turning.-In a rotary head for a boring, facing, &c. machine of the type in which the toolslide is fed radially by a pinion engaging a rack on the slide, the pinion is offset from the centre of the head 'to clear a central shaft f and is carried by a spindle having a worm wheel engaging a worm g rotated by a loose wheel k driven by gearing v and a differential gear t. The casing of the differential is driven by a wheel u keyed to the mandrel m and one sun wheel is driven either through a clutch q and change gearing or by a hand wheel x, the arrangement being such that when no feed takes place the hand wheel is stationary. Specifications 11650/10, 18435/10, 19159/12, 13815/14, 13816/14, 11061/15, 109,876. and 159,646 are referred to.
Patent GB-834446-A (GB)
Title: Improvements in or relating to devices for anchoring wires or cables
Inventor: BOWEN TOM
IPC: H02G7/05
Filed: 1956-11-09
Abstract: 834,446. Mechanical strain-taking devices for cables. SMITH & SONS (ENGLAND) Ltd., S. July 4, 1957 [Nov. 9, 1956], No. 34367/56. Class 38 (1). A cord grip for a twin cable is bent up from a resilient strip, preferably of vulcanized fibre, which has two parallel portions 10, 11 having holes 17, 171 ... 20, 20<SP>1</SP> respectively, each pair being joined by a zig-zag slit, and two apertured mounting flanges 13, 14. The strip is bent at lines 32 ... 37 to provide two pleats having portions of the slits lying on the bend thereof and the pairs of holes in alignment so that a wire pressed through the slits may enter the corresponding pair of holes and be held therein.
Patent GB-507493-A (GB)
Title: Improved process for the treatment of cotton or like fibrous thread or fabric to improve the adhesion of rubber thereto
IPC: C08J5/06
Filed: 1937-12-15
Abstract: 507,493. Treating latex. DUNLOP RUBBER CO., Ltd., MADGE, E. W., and MURPHY, E. A. Dec. 15, 1937, No. 34721. [Class 70] [Also in Group IV] When impregnating. with rubber such materials formed wholly or partly of cotton such as duck for belting or tyre cord, the adhesion of the rubber is assisted by initially. de-waxing the cotton and subsequently applying thereto as an adhesive an aqueous dispersion of rubber containing an addition of resorcinol resin. De-waxing may be carried out by steam treatment in the presence of ammonia, or by heating with caustic alkali solution. Specifications 228,893, 324,664, [both in Class 140], 347,691, and 405,311 are referred to.
Patent GB-805105-A (GB)
Title: Load transmitting elements for flexible shaft-couplings
Inventor: GRASSET FRANK LOUIS
IPC: F16D3/70
Filed: 1955-12-05
Abstract: 805,105. Universal joints. COOTE & JORGENSEN Ltd. Sept. 10, 1956 [Dec. 5, 1955], No. 34775/55. Class 80 (2). [Also in Group XXXII] In a universal joint of the type having a flange keyed on each of the opposed ends of two connected shafts, one of the flanges having rubber shod projections which house freely within cavities formed in the other flange, each projection comprises a pin having a threaded end 5 and an unthreaded end 6 to which is bonded a rubber sleeve 7 externally of barrel shape. The central part 8 of the sleeve surface is cylindrical and the two outer parts 9 taper inwardly at an angle of 1.5-5.0 degrees to a line parallel to the main axis of the pin. According to the Provisional Specification, the outer surface of the rubber sleeve 7 may alternatively be of cylindrical shape.
Patent GB-1016714-A (GB)
Title: A method of producing foamed sheet material and apparatus for performing the same
IPC: C08J9/04
Filed: 1962-09-12
Abstract: A process of producing a foamed sheet from a foamable synthetic thermoplastic containing a solvent and a solid expanding agent is characterized by the steps of first forming the synthetic plastic containing solvent and the solid expanding agent into sheet form, removing the solvent therefrom, foaming the sheet at 70-120 DEG  C. and finally smoothing same. Thermoplastics specified are polystyrene, polyamides and cellulose derivatives.  Expanding agents may be ammonium carbonate, ammonium hydrogen carbonate, sodium hydrogen carbonate or azo compounds.  Solvents may be polar compounds, e.g. low molecular weight alcohols and water.  The deformation of the thermoplastic into sheet form may be performed between rolls or in a calendar, and the solvent may be removed by hot air conducted in counter-current after which the foaming is effected at 70-120 DEG  C. and the foamed plastic is then smoothed between polished platens or rolls.  Apparatus for producing the foamed sheet material comprises cooled calendar rolls, feed means for supplying a foamable synthetic thermoplastic to the cooled calender rolls, a drying chamber, a conveyer belt for conveying the sheet of thermoplastic from the calender rolls through the drying chamber, a heating bath, draw off and smoothing rolls and a drying channel, and means for passing the dried sheet in turn through the heating bath, draw-off and smoothing rolls and the drying channel.
Patent GB-1332280-A (GB)
Title: X-ray holotomographic system
IPC: A61B6/02
Filed: 1972-07-26
Abstract: 1332280 X-ray apparatus NUCLEARCHICAGO CORP 26 July 1972 [27 July 1971] 34876/72 Heading H5R An image of any desired plane through an object 21 is produced by exposing the object to penetrating radiation, e.g. X-rays, emanating from an extended path E 1 , E 2 , E 3  to produce an image on a stationary recording film 22, whereby each point of the object corresponds on the film image to a line the length and position of which is a function of the position of the point in the object, and subsequently illuminating the film image with a light source 24 and lens system 23 such that the light-rays are incident upon the rear surface of the film and are directed in a reverse sense along ray paths corresponding to those of the X-rays, to produce in the space on the further side of the film a three dimensional image space representing the object, such that a film or screen 25 supported in a desired position and orientation in the image space records an infocus image of a corresponding surface through the object. The radiation source may be either an X-ray tube on a radioisotopic X-ray source, and both the X-ray source and the light source 24 may be movable along its respective path, or composed of a plurality of stationary sources disposed along the path, or in the form of a single source having the shape of the path. The screen or film 25 may be orientated at any angle, or may be curved, to display the image of the corresponding surface through the body. The process may be repeated after rotating the object through 90 degrees, or a 2 dimensional system may be produced if the X-ray source and light source are arranged to move along, or be distributed along, circular paths (Fig. 4, not shown), in which case each point of the object maps on to a circle on the recording film 22.
Patent GB-918798-A (GB)
Title: Improvements in or relating to self-priming centrifugal pumps
IPC: F04D9/04
Filed: 1960-10-13
Abstract: 918,798. Diaphragm pumps. EISELE, J. Oct. 13, 1960, No. 35032/60. Class 8(1). [Also in Group XXVI]. A diaphragm air pump d for priming a centrifugal pump a is driven from the shaft of the latter through a clutch i, gearing m and a connecting rod n. A guide rod o is provided. When priming is completed, the liquid delivered by the centrifugal pump a opens a pivoted valve f, and a cam g carried by the valve spindle pmoves linkage-h into the dotted position against the action of a spring l to disengage the clutch i and thereby stop the diaphragm pump d. A hand lever is provided on the spindle p. Specification 804,265 is referred to.
Patent GB-155269-A (GB)
Title: Plant for separating coke from waste fuel and residues
IPC: B03B9/04
Filed: 1920-12-13
Abstract: 155,269. Weber & Co., Ges. f³r Bergbau, Industrie, und Bahnbau, W. Nov. 24, 1919, [Convention date]. Stationary - vessel wetseparating apparatus. - Plant for separating coke from waste fuel, furnace residues &c. consists of an automatic charging-device 1, Fig. 1, which feeds the waste into a sifting-drum 2 where the fine ashes are sifted out and removed by a shoot 3, the remaining slag and coke passing to another shoot 4 designed to distribute the material over the entire width of a water reservoir 5. A surface current of water is maintained in the reservoir by a nozzle 6, Fig. 3, which carries the coke over an adjustable trap 7 to a conveyer 8, while the heavier material, such as slag, falls below this trap to a second conveyer 10. The separating water is circulated by a centrifugal pump 13 which supplies high-pressure water to the nozzle in the reservoir.
Patent GB-625925-A (GB)
Title: Improvements in or relating to tire treads
IPC: B60C11/04
Filed: 1946-11-27
Abstract: 625,925. Pneumatic tyres. FIRESTONE TIRE & RUBBER CO. Nov. 27, 1946, No. 35159. Convention date, July 10, 1941. [Class 144 (ii)] Tyre treads, particularly for use on tractor wheels, comprise two series of circumferentiallyspaced ribs 14, 15, Fig. 5 ; 14a, 15a, Fig. 6, overlapping-and staggered with respect to-the centre-line of the tread, the ribs being of similar curvature and diverging from the tread apex. The ribs taper radially outwards and, as shown in Fig. 5, the angle A of the centre-line zig-zag formation is less than 45 degrees. The height of the ribs at the centre-line is at least as great as their width which is uniform down to the flared ends at the shoulder-portions of the tyre. In the form shown in Fig. 6, the main ribs are braced by intermediate shorter ribs.
Patent GB-427433-A (GB)
Title: Improvements in electrical connecting devices
IPC: H01R39/00
Filed: 1933-12-14
Abstract: 427,433. Plug couplings; collectors. BRITISH INSULATED CABLES, Ltd., BAYLES, E. A., and MASSEY, F., Helsby, near Warrington, Cheshire. Dec. 14, 1933, No. 35178. [Class 38 (i)] A rotary collector disposed within a socket coupling comprises a spindle 19 on which are threaded metal rings 22 spaced by insulating bushes 23. The rings are connected by strips 130 with respective terminals 25 in a trefoil member 29 the strips lying in grooves in the spindle to prevent relative rotation between it and the member. The bushes, rings and member are retained axially by a threaded sleeve 21 through holes 31 in which the cores of the supply cable 27 pass to the relative terminals 25. The sockets 7 are connected with strips 13, portions 15 of which constitute brushes for making contact with the rings. An earthing strip passes through the connector casing and bears on the end ring 22<1>. The Provisional Specification describes a somewhat different construction, screws and sockets on the rings engaging in channels in the spindle and serving to anchor the conductors to the rings being employed instead of the member 29 and strips 130.