baber/WOPTO huggingface dataset:
Patent GB-1358393-A (GB)
Title: Multi-channel pulse combining system
IPC: G06M3/08
Filed: 1972-05-26
Abstract: 1358393 Summing pulses DECCA Ltd 26 May 1972 [28 May 1971] 17956/71 Heading G4D A system for combining pulse trains from several input channels 6a, 6b, 6c into a single output 9, e.g. feeding a counter 10, without loss of coincident pulses, comprises a plurality of clocked bi-stable switching circuits 8a, 8b, 8c which respectively receive the inputs from 6a, 6b, 6c and which are such as to be set when a clocking pulse coincides with an input pulse and to be reset by a clocking pulse in the absence of an input pulse; a generator 1-5 for feeding clock pulses in succession to the bi-stables 8a, 8b, 8c; and means 7a, 7b, 7c for extending each input pulse to be at least as long as the period between consecutive clock pulses applied to the respective bi-stable. The bi-stables 8a, 8b, 8c may be D-type flip-flops. The clock generator comprises an oscillator 1, a BCD counter 2 and a decoder 3 connected to apply pulses successively to open gates 5a, 5b, 5c to release oscillator pulses in succession to the bi-stables. The arrangement is such that the bi-stables, when receiving coincident pulses, are set in succession by the receipt of clocking pulses. The setting of the bi-stables is registered by the counter 10. As above described each extended input pulse will overlap two clock pulses, a third is required to reset it and a new output cannot be generated until the fourth consecutive clock pulse applied to that bi-stable. To increase the maximum counting speed a circuit including a gate 11 is added to each bi-stable 8 and is effective to reset the bi-stable by the next oscillator pulse following the end of the extended input pulse. The inputs 6a, 6b, 6c may be from detectors responding to objects moving along a plurality of parallel paths.
Patent GB-837909-A (GB)
Title: Improvements in or relating to screens for sieves and strainers
IPC: B07B1/52
Filed: 1957-06-06
Abstract: 837,909. Filters. RUSSELL CONSTRUCTIONS Ltd., and HURST, J. Sept. 5, 1958 [June 6, 1957], No. 17999/57. Class 46. [Also in Group II] A circular screen for strainers is gyrated in its own horizontal plane, and supports a cleaning device comprising a frame 33 carrying brushes 37 which rest on the screen and move over the screen surface in operation. A ring 34 of the frame loosely embraces a buffer ring 44, and a leaf spring 46 with a buffer 45 loosely engages the screen casing 29. Material is fed centrally through an aperture 30 and oversize moves continuously off the outer edge of the screen and is delivered centrally to a similar screen below. The screens 11-13 are supported in funnels 14-16 which deliver filtrate and solid material that has passed through the screens to a central passageway 17 and shoot 38: oversize from the lowest screen falls to a shoot 31. The brushes may be given a forward or backward rake on their frame in relation to their direction of motion so as to either shorten or lengthen the treatment. Instead of, or in addition to, brushes, screen cleaning chains may be attached to the frame. The whole assembly is mounted on a frame carrying an out-ofbalance weight producing the gyrations, the assembly being supported by flexible vertical rods from a fixed outer frame. Specification 712,077 is referred to.
Patent GB-737922-A (GB)
Title: Improvements in or relating to electric converter arrangements
IPC: H01J13/32
Filed: 1952-07-16
Abstract: 737,922. Converting, GENERAL ELECTRIC CO., Ltd., and GALLIZIA, E. June 29, 1953 [July 16, 1952], No. 18005/52. Class 38 (2). [Also in Group XL (a)] For cooling a vapour electric arc converter 1, especially one mounted below the floor of an electric traction motor coach, a fan 3 is mounted by the side of the converter and within its height, and blows or draws air through a connecting duct 5 and over the outside of the converter. The fan 3 and converter 1 are enclosed respectively in open-ended casings 4, 8. The cooling air may be drawn through ducting well above the coach floor, or if from beneath the floor, through filters which may be in the form of screens surrounding the converter when the fan draws the air from across the converter, Figs. 3, 4 (not shown). The converter may be of the pumpless steel-clad type with four anodes mounted in arms 2, as described in Specification 737,923, [Group XL (a)].
Patent GB-1456938-A (GB)
Title: Fluid pump
IPC: F16H7/14
Filed: 1974-04-24
Abstract: 1456938 Centrifugal pumps REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 24 April 1974 [14 May 1973] 18019/74 Heading F1C A fluid circulating pump, e.g. for machine tools, domestic or commercial washing machines or, as shown, for an I.C. engine, and of the type driven by a continuous flexible member, e.g. a belt (3), Fig. 1 (not shown), has its axis of rotation off-set from the axis of a mounting and fluid transfer pipe 18 of the pump, so that the belt can be tensioned by angularly adjusting the pump about the axis of the pipe 18. The pump is then locked in its adjusted position by screws screwed into the engine block 6 and passing through arcuate slots (4) in the pump housing. The pipe 18 is formed integrally with a sealing gasket 15 and is provided with an O-ring seal 22. In an alternative embodiment, Fig. 3 (not shown), the O-ring surrounds the pipe 18 but seats against the flat face of the engine block. The pipe 18 and gasket 15 are preferably moulded from plastics material. The belt 3 is cogged for additionally driving the engine timing gear.
Patent GB-1354314-A (GB)
Title: Electrolytic cell
IPC: C25B9/19
Filed: 1971-05-28
Abstract: 1354314 Anodes and electrolytic cells for  production of fluorine from molten baths MONTECATINI EDISON SpA 28 May 1971 [1 June 1970] 18060/71 Heading C7B A carbon anode for the production of fluorine from a KF: 1À8HF molten bath has an end portion clad by a gas-tight envelope of good electrically conducting material, e.g. of copper. Such anodes may be used in a cell from which each anode protrudes through a common cover such that the gas-tight envelope is external of the cell so that electrical connection to the anode can be established through the envelope. The cell shown comprises a tank 1 surrounded by a jacket 2 for use in heating or cooling the bath; carbon anodes 4 having sheathed ends 5 extending through steel cover 3; diaphragms 10 and cathodes 8 positioned coaxially with the anodes; means for withdrawing gases generated; stuffing boxes 7 of insulating material including gasket 15, e.g. of PTFE, for preventing escape of gases from the cell; and means 6 for supplying electric current to the anodes.
Patent GB-1151679-A (GB)
Title: Improvement of Green Strength of Rubber Compounds
IPC: C08L9/00
Filed: 1968-04-17
Abstract: 1,151,679. Polyisoprene blends. GOODYEAR TIRE & RUBBER CO. 17 April, 1968 [19 May, 1967], No. 18076/68. Headings C3P and C3Q. A composition comprises from 99 to 80 parts by weight of cis-1,4-polyisoprene containing at least 85% of cis-1,4 addition, and from 1 to 20 parts by weight of trans-1,4-polyisoprene containing at least 70% trans-1,4 addition. The blend may then be mixed with polybutadiene and styrene-butadiene rubber (including oilextended polymer). Conventional compounding ingredients are added.
Patent GB-1059694-A (GB)
Title: Means for crushing large coal on a conveyor
Inventor: DAWSON GORDON BERTRAM
IPC: E21F13/00
Filed: 1965-04-29
Abstract: 1,059,694. Coal crushing apparatus. MINING ENGINEERING CO. (MECO) Ltd. March 31, 1966. [April 29, 1965], No. 18078/65. Heading B2A. [Also in Division B8]. Means for crushing large coal on a face conveyor 36 comprises a crusher roll 42 carried by an overhung shaft extending over the conveyor from a housing 33, mounted to pivot about an axis parallel to the conveyor 36 on a bracket fixed to one side of the frame of the conveyor. As described, the crusher housing 33 is hinged at 35 on a bracket 34 bolted to one side member of the conveyor frame which is mounted on skids 37. A motor (38, Fig. 7) in the housing 33 drives the shaft via a fluid coupling (39) and gear box 41, Fig. 6. In operation, the housing 33 rests on the flat upper surface of the bracket 34 so that coal lumps exceeding a predetermined size are broken by pick teeth 43 on the rod, which is loaded by the weight of the motor. The crusher roll can yield upwardly about the hinge and is damped by a hydraulic ram 44, which serves for moving the housing to adjust its position. After adjustment stop blocks of the required height are located between the inner side of the housing and the bracket to limit movement of the crusher roll. The hinge may be a piano type, or one having vertically-spaced holes (27, Fig. 4,) for adjustment of the roll height. Blocks (32, Fig. 5) may be used alone to set the crushing roll height.
Patent GB-1527026-A (GB)
Title: Tetrafluoroethylene polymer and process for producing sam
IPC: C08F214/26
Filed: 1976-05-04
Abstract: 1527026 Layered tetrafluoroethylene polymer particles DAIKIN KOGYO KK 4 May 1976 [8 May 1975 3 July 1975] 18082/76 Heading C3P Modified polytetrafluoroethylene in the form of layered particles wherein the modifier is 0À001 to 2 wt. per cent of a comonomer selected from chlorotrifluoroethylene, hexafluoropropylene, or an omega hydroperfluoroolefin of formula CF 2  = CF(CF 2 CF 2 ) n H wherein n is an integer from 1 to 5, is produced by a process wherein at least 50 wt. per cent of the copolymerizable modifier is introduced into the polymerization system after 70 wt. per cent of the polytetrafluoroethylene has been formed, thereby incorporating at least 50 wt. per cent of said modifier in the shell portion of the polymer particles.
Patent GB-1066325-A (GB)
Title: A method for preparing guanine and its derivatives
Inventor: FUJIMOTO YASUO
IPC: C07D473/18
Filed: 1964-04-30
Abstract: Guanine and derivatives thereof having the formula <FORM:1066325/C2/1> or <FORM:1066325/C2/2> wherein R1 and R2 represent H or C1- 6 alkyl groups, are prepared by reacting 2,4-diamino-6-hydroxy -5-nitrosopyrimidine or a derivative thereof of the formula <FORM:1066325/C2/3> or <FORM:1066325/C2/4> with formamide under reducing conditions and with heating to complete ring closure, without isolation of intermediate products. The starting materials may be prepared in situ by a nitrosation reaction.  Reducing conditions may be provided by hydrogen and a hydrogenation catalyst or by means of a reducing agent with or without hydrogen.  Various solvents may also be present during the reaction.  The examples describe the preparation of guanine and 3-methylguanine hydrochlorides.
Patent GB-712800-A (GB)
Title: Improvements in and relating to binary digital computing devices
IPC: G06F7/50
Filed: 1952-07-17
Abstract: 712,800. Digital electric calculating-apparatus. GENERAL ELECTRIC CO. July 17, 1952 [July 21, 1951], No. 18103/52. Class 106 (1) A carry circuit for binary digital computing devices comprises a three-legged resistance network 2 having input terminals 34, 35, 36 at the three extremities which receive potentials of two possible selected values, three junctions 27, 30 33, one in each leg of the network, three rectifiers 37, 38, 39 connected with like polarity from each junction to a common point 40 the potential of which has three possible values, the greatest value occurring only when at least two of the three input potentials are at the greater of the selected values. Two of the input terminals receive potentials representing two corresponding binary digits to be added, while the third input terminal receives the carry digit, if any. By virtue of the rectifiers 37, 38, 39 and 17, the common point 40 is maintained at 50v until at least two of the input terminals 34, 35, 36 receive binary " 1 " potentials when the voltage at the common point rises abruptly and causes the LH side (normally non-conducting) of a bi-stable circuit 3 to be turned fully " on," while the RH side (normally conducting) is turned " off." A positive output signal is obtained from the RH anode at a terminal 24.
Patent GB-835556-A (GB)
Title: Process for improving used photographic developing solutions
IPC: B01J47/10
Filed: 1956-06-13
Abstract: <PICT:0835556/III/1> <PICT:0835556/III/2> <PICT:0835556/III/3> <PICT:0835556/III/4> An ion exchange apparatus for contacting used photographic developer solutions with ion exchange resins in a countercurrent process comprises a cylinder 1 (see Figs. 1-3) containing rotating blades 3.  By incling the tube to the horizontal, resin passes down the tube from a feed hopper 7 to an outlet 8.  The developer solution is introduced at 9 and passes in counter-flow to the resin into decanting chamber 12 where it is freed of resin and removed at 10.  Used resin from outlet 8 is raised by a conveyer belt 14 to a position where it can be drained and regenerated.  Fig. 4 illustrates an alternative method of removing resin from the bed in which an outlet 8 has an orifice 15 through which the resin passes into chamber 16.  Water is passed into chamber 16 at 17 and out at 18, the pressure of the water balancing the pressure above the orifice 15.
Patent GB-1259751-A (GB)
Title: Machine tool with an automatic tool changing device
Inventor: FANTONI GIUSEPPE
IPC: B23Q3/155
Filed: 1970-04-16
Abstract: 1,259,751. Tool Changers. ING. C. OLIVETTI & C. S.p.A. 16 April, 1970 [30 April 1969], No. 18292/70. Heading B3B. [Also in Division G3] A machine tool having a headstock 1 carrying a spindle 11 includes an automatic tool-changing device comprising a tool-holding drum 4 which is rotatable to align a selected tool 21 with the spindle and an hydraulic device 23 for moving the drum 4 parallel to the spindle axis 12 to offer a selected tool 21 to the spindle. An electric motor 13 with an electromagnetic brake is provided for rotating the drum to, and braking the drum at, a position in which the selected tool is approximately aligned with the spindle, and the brake is subsequently released and a pin 38 engages with a locating socket member 37 as the drum is moved rearwardly to accurately align the tool and spindle. The drum 4 is movable in the headstock casing 2 by means of columns 5 moving in stationary sleeves 6. The drum 4 is moved by a rotary vane piston moving in an annular chamber 27 of the hydraulic device 23. A shaft 29 is thereby rotated to rotate an eccentric pin 30 which engages a fixed member 32 by means of an elongate slot therein. Each tool 21 is retained in the frusto-conical wall 7 of the drum by means of a spring detent retained pin 43 engaging in a hole in a collar 22 on each tool. At the spindle is provided an hydraulically-operated piston 48 which engages the pin 43 to withdraw it and allow a tool to be retained in the spindle 11. The operation of the automatic tool changing is controlled by a punched tape using a binary decimal code. Each tool is identified by a cam post 55 which actuates a bank of microswitches 54. When a tool is required by a machining programme its actual position in the drum 4 is compared to the spindle position and the drum 4 is rotated to bring the required tool to the spindle by the quickest route, i.e. clockwise or anti-clockwise.
Patent GB-1457456-A (GB)
Title: Method of producing a glass body for drawing to an optical  wave guide fibre
IPC: G02B6/028
Filed: 1974-04-26
Abstract: 1457456 Glass for waveguides P M B DE MACEDO and T A LITOVITZ 26 April 1974 [27 April 1973] 18489/74 Heading C1M An optical waveguide preform is made by the successive steps of:- (i) preparing a base glass which, on heat treatment, can be separated into two immiscible phases; (ii) forming the base glass into a desired shaped body (e.g. rod or tube) ; (iii) heat-treating to cause phase separation; (iv) substantially or completely leaching out one phase to form a porous glass body; (v) treating the porous glass to modify the optical properties of the glass body to be formed in step (vi); and (vi) heat-treating to consolidate the porous glass into a homogenous glass body. The preform may be a rod or tube which can be used to form the core or cladding of a clad fibre, or may be a rod suitable for forming a self-focussing fibre. The glass (i) may comprise, in mole percent, either (a) SiO 2  40-83, B 2 O 3  8-48 and R x O 2-10 (where x is 1 or 2, and R is alkali metal, alkaline earth metal, Tl, Pb or Zn), or (b) SiO 2  + GeO 2  40-80, B 2 O 3  15-50, Al 2 O 3  0-5 and R x O 4-11. In either glass 0-20 mole per cent GeO 2  may be present. The glass preferably comprises less than 10 p.p.m. (by weight) of transition metal impurity, and NaNO 3  may be added to the batch to oxidise iron impurity. The phase-separation (iii) is preferably at 500-650‹C, giving two phases, each having an interconnected microstructure of average size 100-500 A, in a volume ratio of 2:1 to 1:2. The leaching (iv) is preferably with aqueous HCl, HNO 3  or H 2 SO 4  at 90-100‹C. The treatment (v) may comprise removing colloidal SiO 2  with aqueous NaOH or HF, or removing platinum with aqua regia. Water may be removed by heating for 15-50 hours at 500-700‹C in an atmosphere of, e.g., CCl 4 , Cl 2  or SiCl 4 . Impurities may be oxidized by heating in O 2  at 500-700‹C. In addition to, or alternative to, the above treatments, dopant material may be deposited in the pores to modify the refractive index. Thus B 2 O 3  may be deposited from ammonium borate solution by heating, sodium aluminate solution may be reacted with HCl to deposit Al(OH) 3  in the pores, or GeO 2  may be deposited from the vapour phase by reacting Ge (OC 3 H 7 ) 4  with water vapour. The dopant concentration, which is preferably 5-30% of the weight of porous glass, may vary radially, so that a self-focussing fibre is prepared. Some of the material deposited may be removed to achieve this. The consolidation heat-treatment (vi) is preferably at 700-950‹C.
Patent GB-1118513-A (GB)
Title: Glass compositions
IPC: C03C3/087
Filed: 1967-04-21
Abstract: Glass compositions, particularly for glass fibres, consist essentially in percentages by weight of SiO2 57-62; CaO 8-12; Al2O3 4.5-8.5; MgO 2-5; Na2O 14.5-16; BaO 0-4.5; ZnO 1-4; ZrO2 0-3; Fe2O3 0.3-1.5; F2 0-1.5; K2O 0.10-0.50 and the ratio of the total MgO + CaO + BaO + ZnO to Na2O lies between 1 and 1.4.  Three examples are given.
Patent GB-378154-A (GB)
Title: Improvements relating to switch mechanisms as used in automatic telephone and like selective systems
IPC: H01H63/04
Filed: 1931-06-26
Abstract: 378,154. Automatic exchange switches. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and GACHET, E. J., 12, Eatington Road, Leyton, both in London. June 26, 1931, No. 18536. [Class 40 (iv).] Microphonic noises due to relative movement between wipers a,nd switch-banks set up by vibration is prevented by providing supports for the wipers adjacent the banks. As shown in Fig. 1, the main portion of the wipers comprises relatively stiff members 7, 8 carried by insulating members 4-6 on a sleeve 2 secured to shaft 1, and carrying springy wiper-tips 16, 17. Rollers 14, 15 mounted in forked ends of the members 7, 8 run on insulation a extending from the bank, so that the wipers and switch-banks are caused to vibrate in unison when subject to vibrations such as are due to movement of another switch on the same rack. In the form shown in Fig. 4, resilient wiper tips 16 are mounted on a U-shaped rigid member 7 carrying a roller 14 (similar to that shown in Fig. 5) running on the insulation a. The member 7 is carried by a bow spring 19 connected to shaft 1 by a rigid member 18. The invention may be applied, as shown in Fig. 5, to switches with bare wire multiples. The wipers 7, 8 carried by member 1 are comparatively stiff U-shaped members and have resilient wiper tips 16, 17 adapted to engage the multiple wires b, and rollers 14, 15 running on feed-bars fb to provide the required support. The switches may be uni- or bi-directional.
Patent GB-669042-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: H02P1/26
Filed: 1948-07-09
Abstract: 669,042. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. July 9, 1948. [July 16, 1947] No. 18549/48. Class 38 (iii). In order that a polyphase induction or hysteresis gyroscope motor, having a high inertia rotor and normally drawing a lagging current, may be quickly accelerated, tuning condensers 8, 9, 10, are connected in series with motor phase windings 1, 2, 3 during the starting period. The stator circuit is thereby tuned substantially to resonance and the motor draws a high initial current. When the motor has reached its normal running speed, the condensers are manually or automatically shortcircuited. The motor may be supplied from single-phase mains (Fig. 2), a phase-shifting condenser 17 being provided in addition to the tuning condenser 18. In another arrangement involving single-phase supply (Fig. 3), switch 21 engages contact 22 during the starting period, condensers 19, 20, affording resonance at this time. After the normal motor speed is reached, the switch 21 engages contact 23, the motor circuit is de-tuned, and the condensers provide the necessary phase-shift to obtain the normal rotating field. The tuning condenser may be shunted by an adjustable resistor.
Patent GB-439895-A (GB)
Title: Machines for grinding material such as chocolate, paint and such like
IPC: B02C4/30
Filed: 1935-06-17
Abstract: 439,895. Grinding-surfaces for rollers. McINTYRE, J., 6, John Street, Portobello, Edinburgh. June 17, 1935, No. 18571/34. [Class 59] The internal or external grinding-surface of a roll formed of hard metal strips interlaced with strips or laminations of softer material arranged at right angles to the direction of motion has the strips secured on a dovetail projection on the foundation and by overlapping lugs on the sides. As shown applied to a grinding roller A, Figs. 2, 3, hard metal plates C separated by strips D of softer material are mounted on a central dovetailed portion B and may be secured by wires E or a central band F. The plates C are secured to the roller shell by overlapping rings G. The soft strips D may comprise linen, cotton, wood, paper, leather, celluloid &c. or the hard strips C may be coated with cement, paint, varnish &c. or be electroplated or covered with a deposit of soft metal. The plates C may be case-hardened or if hard plates are used the sides may be annealed or softened.
Patent GB-1198767-A (GB)
Title: One-Component Diazotype Material
IPC: G03C1/54
Filed: 1968-04-19
Abstract: 1,198,767. Diazonium compounds. KALLE A.G. 19 April, 1968 [22 April, 1967], No. 18660/68. Heading C2C. [Also in Division G2] Trifluoromethyl diazonium compounds of formula where R 1  is cycloalkyl or aralkyl with up to 10 carbon atoms, R 2  is alkyl or hydroxyalkyl with 1 to 3 carbon atoms or R 1  and R 2  complete a 6- or 7-membered heterocyclic ring and X is an anion are prepared by reacting the appropriate amine or heterocyclic base with 5-chloro-2- nitro-trifluoromethyl benzene and then reducing and diazotizing the compound obtained.
Patent GB-1270215-A (GB)
Title: Improvements in or relating to semiconductor components
IPC: H01L23/485
Filed: 1970-04-21
Abstract: 1,270,215. Semi-conductor devices. SIEMENS A.G. 21 April, 1970 [22 April, 1969], No. 18923/70. Heading H1K. A semi-conductor device has a surface covered with insulation carrying metal layers which each make contact with the semi-conductor through respective holes in the insulation. The metal layers are covered with a further layer of insulation through which an aperture extends to allow contact between a built-up terminal and a metal layer connected to a pn-junctionforming zone in the body, the terminal being designed to serve as a contact when the device is inserted into a housing. The planar diode shown has, in addition to its main electrode 6 and associated terminal 10, an annular fieldrelief electrode 7 and an (optional) heavily doped contact zone therefor.