baber/WOPTO huggingface dataset:
Patent GB-1205278-A (GB)
Title: Improvements in frequency discriminators
Inventor: ANTOSZEWSKI EUGENIUSZ
IPC: H04L27/156
Filed: 1968-04-23
Abstract: 1,205,278. Digital transmission systems: pulse modulation circuits. ENGLISH ELECTRIC CO. Ltd. 22 April, 1969 [23 April, 1968], No. 19161/68. Headings H4L and H4P. Received frequency shift signals, Fig. 2a (not shown), are applied via limiter 3 and differentiator 4 to a discriminator comprising monostables 5, 10 and gates 6, 7. Monostable 5 is triggered by each positive-going transition in the received signals and delivers true (2c) and inverse (2d) outputs to gates 6, 7. The astable period of monostable 5 is less than half a cycle of the higher of the received frequencies. The true output is also passed to differentiator 8 which triggers a monostable 10 having an astable period of at least two cycles and inertia of a quarter cycle after resetting. The output (2e) of monostable 10 is differentiated at 11 and passed via inverters 12, 13 (2f) to gates 6, 7. Gate 6 therefore outputs pulses (2h) whenever the higher frequency is received, and gate 7 (2g) whenever the lower is received. These pulses trigger a bi-stable 14 which delivers the demodulated data to the output. If the signals received have a 1: 1 mark: space ratio but a varying repetition frequency (e.g. representing an analogue value) it is necessary to vary the astable period of monostable 10 to ensure that the demodulated pulses also have 1: 1 ratio. The period is controlled by a feedback signal from capacitor 17 which is charged to a potential proportional to the mark: space ratio of the demodulated pulses.
Patent GB-956141-A (GB)
Title: Electrical getter-ion vacuum pump or gauge apparatus
IPC: H02H9/02
Filed: 1960-05-31
Abstract: 956,141. Supply systems for discharge tubes. VARIAN ASSOCIATES. May 31, 1960 [June 1, 1959], No. 19275/60. Addition to 883,189. Heading H2H. [Also in Division G1] A circuit supplying current to an ion vacuum pump 5<SP>1</SP> comprises a voltage doubling circuit 4 having a series capacitor 16 of low value in order to limit short-circuit currents. The output voltage is measured by an indicating instrument 43 shunted by a rectifier 42 which has no effect at low voltages but provides an increasing shunting effect at higher voltages so that the upper end of the scale may be compressed. Another rectifier 47 by-passes reverse voltages. To indicate small voltage charges a range switch 49 is closed reducing the voltmeter circuit resistance, the zero being abetraitly adjusted by resistors 46, 51. A recording instrument may be tapped across a series resistor 44. The measuring circuit may be adapted to A.C. by the substitution of an A.C. instrument. A puncturable and replaceable cut-out 36 shunts terminals C, D in the event of these being open-circuited. Specification 956,142 also is referred to.
Patent GB-1180754-A (GB)
Title: Junction Semiconductor Devices
Inventor: WANG RAYMOND CHEN-CHIU
IPC: H01L29/86
Filed: 1967-04-27
Abstract: 1,180,754. Semi-conductor devices. TEXAS INSTRUMENTS Inc. 27 April, 1967 [29 April, 1966], No. 19454/67. Heading H1K. In making a semi-conductor device an insulating layer is formed on part of a region of semi-conductor material doped to give one conductivity type, dopant diffused outwards from the uncovered part of the region to increase its surface resistivity and then impurity of the opposite type diffused into the outdiffused region to form a PN junction therewith. In the embodiment the region is a P-type base region formed by epitaxial deposition or vapour diffusion of indium on an N-type 0À04- 0.05 ohm.cm. antimony doped germanium wafer constituting the collector zone. The insulating layer of silicon dioxide is formed by heating the wafter in a flowing mixture of oxygen and tetraethoxysilane, and removing the oxide from the area where the emitter is to be formed by standard photo-resist and etching steps. After outdiffusing by heating for 30 minutes at 700‹ C. in a current of hydrogen, arsenic is diffused into the outdiffused area to form the emitter. Silicon dioxide is then deposited over the entire wafer surface and apertured to permit emitter and base contacts to be made. The devices are made in multiple from a common wafer and may finally be separated by scribing, after mesa etching if desired, or left as part of an integrated circuit arrangement.
Patent GB-757453-A (GB)
Title: Improvements in or relating to manually operated reciprocating pumps for liquids
Inventor: BRUCKSHAW HERBERT STANLEY
IPC: B66F3/42
Filed: 1953-07-14
Abstract: 757,453. Reciprocating pumps. COAL INDUSTRY (PATENTS), Ltd. Oct. 14, 1954 [July 14, 1953], No. 19535/53. Class 102(1). A reciprocating pump comprises a stepped cylinder 10, 11, and a piston 162 which is a sliding fit in the cylinder portions 11 and an annular piston 17 which slides on the piston 162 and is urged against an abutment 163 by a spring 18. As the delivery pressure rises, the piston 17 ceases to reciprocate. An inlet port 19 is provided and a sealing ring 14 is provided in the cylinder portion 11. The pumps may be used for supplying pit props.
Patent GB-1426723-A (GB)
Title: Heat exchanger
IPC: F28F13/00
Filed: 1972-04-27
Abstract: 1426723 Moulding foam insulation AXSTANE PROPERTIES Ltd 27 April 1973 [27 April 1972] 19538/72 Heading B5A [Also in Division F2] A shell and tube heat exchanger, shown as a water chiller 5, has a thermally insulating covering comprising an in situ moulded foamed synthetic resin having a rigid integral skin. The chiller 5 is located within a mould 1, being so spaced from the walls of the mould as to define a void 11. The mould 1 comprises two semicylindrical shell parts 2a, 2b and two end plates 3, 4. The chiller 5 has water inlet and outlet connections 6, 7 projecting through the shell part 2a, refrigerant inlet and outlet tubes 8, 9 projecting through the end plate 4, and supporting feet 10 projecting through the shell part 2b. The mould 1 is mounted on rollers 13 and can be rotated by a handle 14 attached to the end plate 3. A mould release agent is first applied to the internal surface of the mould 1, and the mould 1 is then charged through a filling hole 12 with a foamable synthetic resin composition. After closing the hole 12 with a plug, the mould 1 is rotated so that the composition "wets" the internal mould surface, after which the plug is removed. After the composition has foamed and set, the mould parts are removed. The chiller 5 has a foam layer formed with a rigid, liquid-impermeable non-celiular surface where it has been in contact with the mould. The foamed material which sets in and above the filling hole 12 is cut off and the exposed foam layer is coated with a sealant.
Patent GB-737343-A (GB)
Title: Improvements in seasonal control means for charging electric storage batteries
IPC: H02J7/22
Filed: 1953-07-14
Abstract: 737,343. Battery charging systems ; automatic voltage control systems. MENZEL, F. July 14, 1953, No. 19588/53. Class 38 (4). In a generator-battery system for use on a vehicle, wherein a vibratory voltage regulator D for the generator A controls the charging voltage first by intermittently short-circuiting a resistance 19 in the field circuit 17 of the generator at contacts 37, 38 and, at higher speeds, by intermittently short-circuiting the field itself at contacts 39, 40, a thermal switch 68 operates at low temperatures to increase the charging voltage by completing the circuit of a winding 64 on the regulator which opposes its main winding 57, 59. The circuit includes the tail lamp 48, as shown, so that upon closure of any light switch 50, normal voltage is restored. A current-responsive vibratory regulator B is effective to reduce progressively the regulated voltage with increase of load above a predetermined figure, by intermittently increasing the current through portion 59 of the voltage regulator winding. The usual generator cut-out C is also included.
Patent GB-718323-A (GB)
Title: Improvements in or relating to semi-conductor devices
IPC: H01L29/47
Filed: 1952-08-05
Abstract: 718,323. Semiconductor devices. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Aug. 5, 1952, [Aug. 3, 1951.] No. 19645/52. Class 37. An electrode for semiconductor devices such as diodes or transistors, comprises a core i of material such as tungsten, having a thin coating 2 of platinum, or a platinum alloy, whereby the contact is welded to the semiconductor element. The core, which may be either pointed or wedge shaped, provides mechanical stability, while the coating material provides desired electrical properties. The platinum may be electrolytically deposited on to the core.
Patent GB-202145-A (GB)
Title: Improvements in waste preventing valves
IPC: E03D3/04
Filed: 1922-07-18
Abstract: 202,145. Doulton, H. L., Corby, S. F., and Pleace, R. J. July 19, 1922. Waste-preventing valves. - A waterwaste e preventing valve of the kind described in Specification 184,214 is modified to avoid the use of a valve between the two water chambers. The casing is divided into chambers d, e by a partition f, the upper chamber containing a piston g, the stem of which is secured to a socket h sliding on a. projection j. A spring k tends to lift the piston. A piston p in the lower chamber controls the outlet r and is open to the inlet x. When the piston g is depressed, water is drawn by suction from the space e through the check valve u and passage t, and water is forced downwards through the by-pass s to the inlet passage. The piston p is thus lifted by the inlet pressure, and the valve remains open until the pressure water leaks past a valve w to the upper side of the piston.
Patent GB-905260-A (GB)
Title: Storage tube including improved target structures
IPC: H01J29/02
Filed: 1961-06-01
Abstract: 905,260. Cathode - ray storage tubes. FERNSEH G.m.b.H. June 1, 1961 [June 1, 1960], No. 19793/61. Class 39 (1). A charge storage target 8 is spaced from a grid 5 by wire distance pieces 6. The wires, or wire frame formed from a single length of wire, are welded to the mounting ring 1 for the grid 5, the wires and the grid being strained across the inner rim 3 and secured by a flat ring 7 pressed into the groove 2. The cross-over points of the wires 6 lie outside the rim 3. The storage target may be of glass and the grid 5 are wires 6 of copper. The target structure may be used in an image-orthicon or in a storage tube in which the change pattern is laid down by a writing gun.
Patent GB-530994-A (GB)
Title: An improved process for preparing compounds of molybdic acid with alkaline earth metals in lump form
IPC: C01G39/00
Filed: 1939-07-07
Abstract: 530,994. Alkaline earth metal molybdates. NORDDEUTSCHE CHEMISCHE FABRIK IN HARBURG. July 7, 1939, Nos. 19800, 19801 and 19802. Convention dates, July 14, 1938, Nov. 1, 1938, and Nov. 2, 1938. [Class 1 (iii)] Normal or acid molybdates of the alkaline earth metals are prepared, in lump form, by intimately mixing molybdic acid with an alkaline earth metal hydroxide in stoichiometric proportions, with or without the addition of water, whereupon this mixture is pressed in shapes under high pressure, and the resulting pressed pieces are dried, or treated with high pressure steam and then dried, or strongly moistened with water and then dried. Silicic acid, e.g. quartz sand, may be added to the mixture before the pressing operation. Examples are given. The products, in lump form, may be used for addition to steel baths, in the production of molybdenum steels.
Patent GB-1392186-A (GB)
Title: Earth marking devices
IPC: A01B69/02
Filed: 1971-06-10
Abstract: 1392186 Earth markers MASSEY-FERGUSON-PERKINS Ltd 6 June 1972 [10 June 1971] 19878/71 Heading AID A marker 1 has an adjustable arm 51, 53 which is pivoted at 9 to the frame 21 of a seed drill 3 and which is raised by chain 11 as the drill coneters are raised to be automatically retained in the raised position by a manually releasable latch mechanism 15. A spring biased bell crank lever 35, 37 pivoted at 39 is engaged by an angle bar 31 as the arm is raised and a surface 47 of the crank supports the bar 31 in the raised position, an abutment 45 on the machine frame engaging the bent end 43 of the crank. A manually operated rope 17 pivots the crank to release the latch. For storage, pin 67 is held in hole 69 in the frame. The marker disc 7 is supported on a break-back mechanism 19 which allows pivoting about pin 61.
Patent GB-1314686-A (GB)
Title: Direct current power supply with adjustable inductance control
IPC: B23K9/073
Filed: 1970-04-24
Abstract: 1314686 Control systems for arc welding apparatus CHEMETRON CORP 24 April 1970 [25 April 1969] 19921/70 Heading H2H The arrangement described is generally similar to that of Specification 1,314,681 but the claims relate to the use of a saturable inductor 20 having a load winding 19 in series with the arc 7 and control windings 25 connected to a pulsed D.C. supply from a centre-tapped winding 106 via rectifiers 93, 94 which are triggerable to vary the load winding inductance. The load winding 19 is wound on the centre limb of a core 24 while the control windings 25 are wound on two outer limbs and are connected in series to the winding 106 via thyristors 93, 94. These thyristors are fired when a unijunction transistor 104 is triggered through an R-C- time delay circuit including a potentiometer 101. The potentiometer 101 may form part of a remote control unit and the inductance of the load winding 19 is variable between 100 and 600 microhenries.
Patent GB-183479-A (GB)
Title: Improved ferrules for protecting the ends of fire-tubes of boilers and the like
IPC: F22B37/06
Filed: 1922-07-20
Abstract: 183,479. Lymn, A. H. July 20, 1922. Tubes, smoke.- Short, thin ferrules for protecting the ends of smoke-tubes are made of refractory material such as firebrick or fire-clay. The exposed surfaces of the ferrules are preferably glazed. The ferrule n is moulded in position, a mould a being covered with plastic refractory material and forced into the end of a smoke-tube o. The mould is burnt away by the furnace gases. The refractory material may contain salts forming a glaze when the ferrule is heated. The beading of the ferrule may taper so as to form a cutting-edge in the direction of the draught.
Patent GB-200153-A (GB)
Abstract: 200,153. Portal, F. March 23, 1922. Straight-bar machines; driving-mechanism.- An electric motor control system for driving a Cotton's machine at a variable speed comprises a rotary and axially movable conducting ring b one segment S of which is insulated therefrom, a brush which bears constantly on the ring b, other brushes B' - - B<n> which bear sometimes on b and sometimes on S, and a sliding contact F which may co-operate with one of a number of fixed contacts 1 - - - n connected to the brushes B<1> - - - Bn. The line wires L', L<2> are connected to the ring b by branched circuits extending between terminals A<1>, A<2> and including high and low field-exciting resistances R, r. When a brush connected to the contact F is on the ring b the current passes through both resistance circuits and the motor runs at reduced speed. When the current passes by way of the high resistance circuit R only the motor runs at full speed. When narrowing or other fashioning is to be done the main shaft and the ring band segment S are moved endways, bringing the brushes B<1> - - - B<n> in line with the ring b and causing the motor to run at reduced speeed. The full-speed interval can be varied by varying the length of the segment S or the positions of the brushes. Several segments S may be used, a corresponding number of speed changes per revolution of the main shaft being thus obtainable. The device mav be combined with a rocking switch for short-circuiting the ring b and segment S at the end of the, narrowing &c. period to allow a gradual acceleration to normal. The switch comprises a spring-acted arm d rotating with the ring b and carrying a knob d<1> which normally runs on a fixed annular plate g provided with notches g<1>, g<2>. When the main shaft and the ring b are moved longitudinally the knob d' passes through the notch g<1> to the other side of the plate g. Subsequently the knob passes back through the notch g<2> and when the arm d is in the inclined position shown in Fig. 9 a brush B<x> short-circuits the ring b and segments S. The notches are guarded by flat springs h<1>, h<2>.
Patent GB-232845-A (GB)
Title: Improvements in resilient rubber heel
IPC: A43B21/433
Filed: 1924-08-25
Abstract: 232,845. Eichorn, A. M. Aug. 25, 1924. Protectors, securing ; protectors, construction of; countersunk tips.-In a resilient heel pad of the kind comprising a main part for attachment to the heel proper and a renewable wearing tip held against a shoulder on the main part in a rotatable manner, the tip 18 in anchored by means of a headed stud 19 which engages a keyhole slot 13 in a plate 12 embedded in the main part 10. The slot 13 is arranged with its broad part 13<1> towards the shoulder 11, so that the tip must be flexed and moved rearwardly to anchoring position. The tip is preferably convexed and may have wearing ribs 26, 27. To prevent undesired rotation of the tip, two lugs 22 on the main part engage any adjacent pair of four recesses 23 equally spaced around the tip, so that the latter may be held in four different wearing positions, which may be indicated by four points 25 on the tip which register successively with a recess 24 on the main part.
Patent GB-516746-A (GB)
Title: Improvements in or relating to valve actuating mechanisms for internal combustion engines
IPC: F01L1/047
Filed: 1938-07-07
Abstract: 516,746. Valve gear. GLASS, C. N. J. July 7, 1938, No. 20119. [Class 7 (vi)] Positive cam gear comprises a cam 18 actuating a tappet 7 carrying a sleeve 11 closed by a screw collar 14 sliding upon the valve guide 4, a spring 12 being maintained under slight compression between the collar 14 and a collar 5 on the valve stem. The cam may comprise two discs 18 having their inner faces formed with'grooves engaging a roller 16 at the end of the tappet ; or a single disc with a cam groove on each side, or a single-grooved cam, may be used. In the case of overhead valves worked by push-rods, the mechanism may be fitted to the lower end of the push-rod.
Patent GB-636231-A (GB)
Title: Improvements in windscreen wiper blades
IPC: B60S1/38
Filed: 1947-07-25
Abstract: A wetting agent incorporated in the rubber blade of a windscreen wiper (see Group XXIII) consists of a sulphonated organic compound or a metallic or ammonium salt of the same.  One composition from which the blade may be formed comprises smoke sheets, whiting, isopropyl naphthalene sodium sulphonate, zinc oxide, stearic acid, sulphur, phenylbeta-naphthylamine and mercaptobenzthiazole.  Other materials used in alternative mixtures for the blade materials consist of china clay, mineral oil, sodium salt of alkyl naphthalene sulphonic acid (Darvan 1), neoprene type G.N., lead pentamethylene dithiocarbamate, light calcined magnesia, "Thermax" (R.T.M.), carbon black and dodecyl benzene sodium sulphonate.  The Provisional Specification states that sulphonated loral may be used as the wetting agent.
Patent GB-1501027-A (GB)
Title: Heat and sound insulator of curved corrugated paperboard and method of producing same
IPC: B32B37/00
Filed: 1976-05-17
Abstract: 1501027 Shaped corrugated board NISSAN MOTOR CO Ltd and FUKUOKA PAPER CO Ltd 17 May 1976 [15 May 1975] 20237/76 Headings B5N and B5A A heat and sound insulating sheet comprises a corrugated medium 12 of paper, a paper liner 14 arranged to cover one face of the medium and a layer 16 of a thermoplastic resin positioned between the medium and the liner such that the medium is bonded at the crests of the corrugations to the liner by the layer, the sheet being at least partly shaped such that the liner has a curved surface, the thermoplastic resin being solidified after shaping of the curved surface. In a preferred embodiment, a second paper liner covers the other face of the medium, another layer of a thermoplastic resin being positioned therebetween such that the medium is bonded at the crests of the corrugations to the other liner by the other layer. The thermoplastic resin may be applied as a coating to the inward facing surface of the or each liner (Figs. 3 and 7); alternatively, it may be applied as a coating to the or each surface of the medium (Fig. 4), specified resins being polyethylene, polypropylene, polyvinyl chloride, polyvinyl acetate, polystyrene, an ethylene-propylene copolymer and an ethylene-vinyl acetate copolymer. The product may be made by assembling the components, press-shaping the resultant planar composite at a temperature above the softening point of the resin and lowering the temperature to solidify the resin, the additional liner (where present) being applied at the first stage or alternatively, applied as a preshaped member to the cooled shaped composite. Fig. 1 shows a shaping press which may be used, the press comprising a male die 22 and a female die 24 each having a shaped surface 22a and 24a respectively, the dies being provided with heating pipes 26 or electric heating elements and the female die being vertically movable. The product of the invention may be used on the heat insulation of rooms, ship cabins and passenger compartments of cars, the exposed liner optionally carrying on its outwardly facing surface a sheet of paper or of artificial leather.
Patent GB-583341-A (GB)
Title: Improvements in or relating to power plants for jet propelled aircraft
IPC: F02K7/00
Filed: 1944-10-19
Abstract: 583,341. Power plants for jet-propelled aircraft. FAIREY AVIATION CO., Ltd., and TIPS, E. O. Oct. 19, 1944, No. 20265. [Class 51 (i)] The power plant of a jet-propelled aircraft comprises an annular series of combustion chambers a arranged within a casing b and provided with air inlet ports e<1> controlled by a rotary disc valve d having corresponding ports e, the valve being driven by a windmill j arranged in an air tunnel between the combustion chambers and supplied with air from an air inlet t and ports f in the disc valve d. The disc valve d and the windmill j, which is provided with adjustable blades, are mounted on the shaft h and rotation of the disc valve by the windmill opens and closes the ports e' to admit air to the combustion chambers to mix with fuel supplied by pumps p driven by a cam n on the shaft h and tappet rods o. Ignition of the charges is effected by a distributor comprising a rotary part k attached to the disc valve d and a fixed portion m to which sparking plugs r are connected. Alternatively sparking plugs may be mounted on the disc valve d in such positions that they will be in front of the ports e<1> when ignition is to take place. The valve d is formed at its periphery with pockets g to which fluid may be directed tangentially by nozzles (not shown) for starting-up purposes. Alternatively an electric motor may be used for the same purpose.
Patent GB-567742-A (GB)
Title: Improvements in or relating to combined correspondence sheets and envelopes
IPC: B42D15/08
Filed: 1943-12-06
Abstract: 567,742. Letter sheets. SMITH, T. W. P. Dec. 6. 1943, No. 20360. [Class 146 (ii)] A combined letter-sheet and envelope, which is adapted to be closed by means of tongues and slits, has inclined slits C<1>, C<2>, Fig. 1, in one part C, the slit C<2> being at or near one edge of the sheet, when folded, in order to receive the square corner of the tuck-in part A, and the slot C<1> being at some distance from the opposite edge, to receive a tab formed by an inclined cut a' in the part A. The sheet has a side portion D, which is turned over on to the body, after which the part C is folded on to the part B, as shown in Fig. 3. The corners of the tab formed by the cut a<1> may be rounded. Notches may be cut in the edges of the sheet to serve as guides in folding. Specification 534,588 is referred to.