baber/WOPTO huggingface dataset:
Patent GB-710380-A (GB)
Title: Improvements in electronic amplifiers
Inventor: BUCKERFIELD PHILIP SIDNEY TEAR
IPC: H03F1/50
Filed: 1952-01-28
Abstract: 710,380. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 22, 1953 [Jan. 28, 1952], No. 2276/52. Class 40 (6) In a wide band D.C. amplifier comprising a high-pass A.C. amplifier (A.C., Fig. 2) in shunt with a D.C. amplifier (D.C.) of the type in which a current of higher frequency is modulated, amplified and rectified. R.C. input separating filters 1, 2 and 3, 4 are used and the terminating impedances 5, 6 so chosen that the arrangement is the equivalent of a bridged-T network followed by an ideal amplifier. Overall negative feedback may be applied via a path L and resistances 7, 8, the input to the D.C. amplifier being taken from a null point in the resistance 8 such that signals having the same frequency as its carrier do not reach the D.C. amplifier. In an embodiment, Fig. 4, the higher frequencies are applied by filter network 3, 4 to a two-stage R.C. amplifier comprising double triode 29, while lower frequencies pass via filter network 1, 2 to a modulator comprising a high-speed relay 27. The modulated signals are amplified in a two-stage R.C. amplifier comprising a double triode 28 and are demodulated by a further high-speed relay 24. The outputs from the two channels are recombined by network 5, 6 and given further amplification in a directcoupled amplifier comprising a double-triode 30, to which negative feedback is applied via a resistance 9. The resistances 6, 9 are so chosen that their join constitutes a null point for signals coming from the high-frequency channel and having the frequency of the carrier used in the D.C. amplifier, so that such signals do not reach the demodulator 24.
Patent GB-557834-A (GB)
Title: Improvements in or relating to hydraulic circuits
IPC: B23Q5/26
Filed: 1942-06-03
Abstract: 557,834. Hydraulic transmission of power. WAHLMARK, G. A. June 3, 1942, No. 2295/43. Convention date, Sept. 15, 1941. Divided out of 557,821. Drawings to Specification. [Class 69 (ii)] In a hydraulic circuit such as is used to operate machine tools the power unit comprises a variable displacement pump, and according to the invention the displacement of the pump is increased with an increase in the working pressure of the pump. The invention is described in connection with mechanism which is the same as that set forth in Specification 557,821. Specifications 516,721 and 557,822, [Group XXVIII], are referred to.
Patent GB-173698-A (GB)
Title: Improvements in or relating to boilers of the locomotive fire-tube type
IPC: F22B13/08
Filed: 1921-01-18
Abstract: 173,698. Mann's Patent Steam Cart & Wagon Co., Ltd., and Mann, J. H. Jan. 18, 1921. Shells.-Boilers of the locomotive fire-tube type are constructed of two plates, one forming the barrel and the other the external fire-box. The cylindrical barrel 1 is formed from a plate rolled into a cylinder and riveted along the horizontal line 3, and the external fire-box 2 is formed from a plate and riveted along the vertical line 4, the joint between the two being on the diagonal line 5.
Patent GB-1127341-A (GB)
Title: Improvements in or relating to woven pile products and the weaving thereof
Inventor: HASTEWELL CLAUDE
IPC: D03D39/16
Filed: 1966-01-18
Abstract: 1,127,341. Pile fabrics; looms. G. H. NORTON & CO. Ltd. 18 Jan., 1967 [18 Jan., 1966], No. 2371/66. Headings DIE and D1K. Two heights of pile are produced in face-toface weaving by shifting the knife race 1 between high and low positions between successive or other strokes of the knife 4. It is stated that shifting may also be effected during a stroke of the knife.
Patent GB-268079-A (GB)
Title: Improvements in and relating to electric heating elements
IPC: H05B3/06
Filed: 1926-01-27
Abstract: 268,079. Roddis, C. H. Jan. 27, 1926. Soldering-irons. - Crystalline materials for electric heating resistances such as silicon, iron pyrites, carborundum, molybdenite, bornite, zincite and ferron are electroplated with metal in two 'distinct places and conductors secured to the electroplated portions by soldering, brazing, welding &c. or electrodeposition. Fig. 1 shows a piece of crystal 10 of this sort arranged in a soldering- iron. One end of the copper bit 18 is welded to one metal cap 19 of the resistance and to the other is secured a springy metal tape 21 conneting it to a terminal 22.
Patent GB-1167331-A (GB)
Title: A Voltmeter
Inventor: METCALF ERIC
IPC: G01R19/02
Filed: 1966-01-18
Abstract: 1,167,331. Measuring voltage. SOLARTRON ELECTRONIC GROUP Ltd. Jan. 11, 1967 [Jan. 18, 1966], No.2377/66. Heading G1U. [Also in Division H3] In a voltmeter for producing a D.C. output proportional to the mean square or r.m.s. value of an intput voltage, the intput voltage is sampled at discrete times at a mean frequency f, a series of unidirectional pulses are formed each of height proportional to a voltage sample, the pulses are integrated to give a D.C. output and this output is also sampled at a mean frequency f, the output voltage samples being fed back to the input of the integrating stage so that the integrated output is independent of the sampling frequency f. The output of a sampler 11, triangulater 12 and rectifier 25 (See Division H3) is a train of pulses 32 of mean area proportional to the mean square value of a voltage Vi being measured and to the frequency f of sampling, this being varied during the measurement to ensure that it is not equal to the frequency of the voltage Vi. The output of the rectifier is fed to a function generator 33 and integrating amplifier 34, the function generator being of the kind described in Specification 1, 050, 145. A negative feedback voltage is taken from the output Vo, which is measured in a D.C. voltmeter, to the input of the function generator through a second sampler 36 operating at the frequency f and triangulater 37. The shape of the hypotenuses of the output pulses of the triangulaters can be made proportional to Vo by feeding back a signal from the output to constant current generators, Fig. 1 (not shown) in the triangulaters. In a modification, Fig.4 (not shown) the rectifier 25 is replaced by a pulse generator, a transformer and a ramp generator. The pulse generator forms a train of rectangular pulses where time spacing is proportional to the input voltage samples, and these pulses are fed through the transformer to the ramp generator which forms a train of unidirectional triangular pulses 48, Fig.4 (not shown) similar to 32 but with the hypotenuses leading the verticals.
Patent GB-925446-A (GB)
Title: Improvements relating to thermostatic control apparatus for electrical vehicle-heating systems
Inventor: THOMAS LEONARD GEORGE
IPC: G05D23/275
Filed: 1961-01-20
Abstract: 925,446. Automatic temperature control systems. J. STONE & CO. (DEPTFORD) Ltd. Jan. 19, 1962 [Jan. 20, 1961], No. 2392/61. Class 38 (4). In a temperature control system as described and claimed in Specification 889,737 there is provided a second temperature-sensitive thermostat 5 placed adjacent one of the heaters 1a on the vehicle, the contacts of which are placed in parallel with the contacts 3<SP>1</SP> of the temperature-sensitive means 3 situated in the heat loss simulating device 2 in the vehicle so that should overheating occur in the vehicle the thermostat 5 contacts close to operate a relay 9 and remove the supply from the heaters 1 and/or the heater 6 in the heat loss simulator 2. A heater 1c may be situated in a corridor of the vehicle and supplied independently of the control system, a third thermostat 7 being associated with this heater, the contacts of this thermostat being arranged to close only when the heater 1c has reached a given temperature, the contacts when closed completing a circuit 8 for the control circuit 4. In a second embodiment the further thermostat is placed in the heat loss simulator device 2.
Patent GB-536986-A (GB)
Title: Improvements in friction clutches
IPC: F16D13/64
Filed: 1940-02-08
Abstract: 536,986. Friction clutches. GENERAL MOTORS CORPORATION. Feb. 8, 1940, No. 2418. Convention date, Feb. 27, 1939. [Class 80 (ii)] A friction clutch plate is provided with a continuous series of similar marginal circumferentially extending resilient tongues 41, the root and tip being axially spaced as shown in Fig. 4, a facing 45 being secured by rivets 43 to the roots and a facing 47 being secured by rivets 49 to the tips. The tongues may be provided with radial slots to form secondary tongues 55, 57, 59, 61 which are twisted about a radial line so that their marginal edges lie adjacent the opposite facings. Certain of the secondary tongues may be twisted to a greater extent than others to produce a step by step resistance to the flattening of the plate when the clutch is engaged.
Patent GB-572774-A (GB)
Title: Improvements in or relating to hair net
IPC: A45D8/40
Filed: 1943-02-16
Abstract: 572,774. Hair nets. MORINS, L. J. F. Feb. 16, 1943, No. 2578. Convention date, Sept. 24, 1942. [Class 131] In order to form a resilient border for a hair net the border S is formed of looped yarns L the adjacent yarns 10, 11 being highly twisted in opposite directions so that when shrunk and dried it forms a yielding and crinkled border. The loops are formed as shown in Fig. 2 and comprise arms A anchored to the hair mesh G and bridge portions B.
Patent GB-1477243-A (GB)
Title: Apparatus for an internal combustion engine
IPC: F02M7/12
Filed: 1975-01-21
Abstract: 1477243 Carburetters P G B LAPRADE and X LAPRADE 21 Jan 1975 [21 Jan 1974] 2624/75 Heading F1H An auxiliary valve 5, employed to vary mixture strength with engine operating conditions (as detailed below), is located upstream of a fuel jet 8 in the auxiliary duct 3 of a carburetter having a main duct 1 and an auxiliary duct 3 provided with throttles 2, 4 respectively and an air-flow measuring valve 6. The auxiliary valve 5 is operated by a lever 10 through a spring 9, the lever position being determined by transducers operated by sensors responsive to the engine operating conditions which may be one or more of the following: (1) engine temperature sensed by a wax capsule or bi-metallic strip 27, (2) mixture temperature (sensor not shown), (3) atmospheric pressure and/or air-pressure drop across an air inlet filter sensed by a vacuum capsule 22, (4) exhaust gas recycling rate sensed by Venturi 35 and vacuum capsule 21, (5) degree of combustion in exhaust gases, sensed by O 2 -probe 33 providing an electric signal to a solenoid 24. All the transducers are connected to the lever 10 via springs 17, 18, 19 except the wax capsule or bi-metallic strip 27 which alters the pivot point 14 position of lever 10 by rotating its mounting block 25. Idling mixture is adjusted by rotating a bolt 11 to alter the tension in spring 9. A cam on throttle 4 urges a rod 28 rightwards and lever 10 clockwise to enrichen the mixture at idling. The fuel quantity supplied to jet 8 is regulated by the air measuring valve 6. The butterfly valve 5 can be replaced by a flap valve (not shown).
Patent GB-547416-A (GB)
Title: Improvements in and relating to fibre-board and like products
IPC: D21J1/16
Filed: 1941-02-26
Abstract: 547,416. Fibre-board. HONIG, J. H. Feb. 26, 1941, No. 2634. [Class 140] Fibre board is made by superimposing layers of loose wood fibre, the fibres being encased in adhesive, e.g. a urea-formaldehyde condensation product, in an unset condition .and subjecting the layers to heat and pressure. Wood chips or fragments may be added as filler. The adhesive may be applied to the fibres before or after forming the layer, for example by spraying. The layers may be formed within a frame and preliminary pressure applied, the frame serving to prevent lateral spreading, after which the final hot pressing is applied without the use of frames or moulds.
Patent GB-1146681-A (GB)
Title: Handles for carrier bags, boxes or like containers
Inventor: JENKINS DAVID BERNARD
IPC: A45C13/26
Filed: 1965-01-21
Abstract: 1,146,681. Carrying handles. E. S. & A. ROBINSON Ltd. 19 April, 1966 [21 Jan., 1965], No. 2689/65. Heading A4G. A detachable handle for a carrier bag or box comprises a flexible strip 2 forming the hand grip and at least one end connected at 5 within the periphery of a flat, flexible and resilient button 4 capable of being distorted to pass through a smaller dimensioned hole or slit in the bag where it resumes its normal shape to retain the handle. The buttons may be of various shapes and the button may be attached to a loop handle or passed through a slit at one end to form a loop.
Patent GB-524302-A (GB)
Title: An improved extendible strut
IPC: E05C17/30
Filed: 1939-01-26
Abstract: 524,302. Stays for hinged articles. MALCOLM, E. E. Jan. 26, 1939, No. 2733. [Class 65 (i)] A telescopic stay for doors &c. comprises a tube 11 with hook 15 and with several bayonet slots 17 opening into a longitudinal slot 16 in which slides a pin 18 on an inner rotatable rod 10. A unit 19 may lock the stay in adjustable position. The pin may be on the tube and the slots in the rod.
Patent GB-792255-A (GB)
Title: Pyrolytic cracking of heavy oils
IPC: C10G9/36
Filed: 1956-01-27
Abstract: <PICT:0792255/III/1> In a process for converting heavy oils into a fuel gas, light petroleum products and some heavier products such as gasoline the heavy oils are contacted with a stream of heated inert refractory pebbles which move successively downwards through a heating zone 8 wherein the pebbles are reheated by burning off coke deposited on the pebbles, a pebble distributing zone 24 from which a small portion of the pebbles is fed to the reaction zone 28 through a ring of tubes 36 while the major portion of the pebbles descends by a central conduit 37 and on to which the heavy oils are sprayed by a pipe 41 passing through the duct 37, reaction products are withdrawn from the zone 28 through off-take 45 while the pebbles are removed as two annular streams through conduits 46 extending through a mass 47 of refractory material, e.g. sand, and a transverse support member 48 and pass through a valve 52 and conduit 59 to the chamber 67 of a pneumatic lift having two or more lift pipes 68 to be returned to the heating zone 8 via a disengaging vessel 71.  Burners 72 may be supplied with oil or gas through lines 74 and air through lines 73 to supplement the heating by combustion of deposited coke in the heating zone 8. Lines 73 may also supply air for the combustion of deposited coke if air is not supplied as the lift gas in the pneumatic lift. Flue gases leave the zone 8 through a boiler section 20 and a stack 21.  Steam is supplied to the reaction zone through line 42 and the temperature in the reaction zone may be between 1100-1500 DEG  F.  In an example, pebbles enter the heating zone 8 at between 1000-1200 DEG F. and are heated therein to between 1480-1580 DEG  F., the temperature in the upper part of the reaction zone being 1180-1300 DEG  F. while in the lower part of the reaction zone the temperature level is between 1080-1200 DEG  F.
Patent GB-692891-A (GB)
Title: Arrangement for driving moving tapes, e.g. sound carrier tapes
IPC: G11B5/55
Filed: 1951-02-05
Abstract: 692,891. Magnetic sound recording and reproducing apparatus. LOEWE OPTA AKT.-GES. Feb. 5, 1951 [Feb. 9, 1950; Feb. 9, 1950], No. 2780/51. Class 40 (ii) [Also in Groups XVI and XXIV] Driving pulleys 4, 5 for sound tape reels are driven from a disc 1 on the motor shaft 3 through a pivotally-mounted friction wheel 2. When it is desired to change the direction of winding of the tape, the motor is reversed and, due to the friction between the members 1, 2, the wheel 2 pivots about the axis of the shaft 3 until it is in engagement with the other driving pulley. The shaft 3 may have a sleeve, Fig. 2 (not shown), with a groove to receive a cord for rotating a pulley which drives the tape between the reels. The reversal of the motor may be effected by a switch operated either manually or automatically, when an end of the tape has been reached, by pins 8, 9, Fig. 3, which are engaged by the tape moving from the full to the dotted line position. The ends of the tapes have textile strips and are fixed to the reels by hooks. When a magnetic tape is used, a recording and reproducing head 8, Fig. 4, and an erasing head 7 may be mounted on a turntable 6 which is automatically rotated through 180 degrees when the direction of movement of the tape is reversed, so that the erasing head 7 always precedes the head 6. The turntable is reversed by a disc 11 which engages by friction and by a pin S, an arm 10 fixed to the shaft 9 of the turntable. When the tape has more than one sound track the turntable may be raised and lowered to bring the magnetic heads opposite the next adjacent track. This is effected by supporting the turntable 6 on an inclined surface 15, Fig. 5, by means of a pin S 3 . The shaft 9 is bored at 17 to take the wires for the magnetic heads.
Patent GB-764519-A (GB)
Title: Improvements in or relating to ironing boards and similar collapsible structures
IPC: D06F81/04
Filed: 1955-01-31
Abstract: 764,519. Stands. SOUTHWELL, J. R. Jan. 31, 1955, No. 2835/55. Class 52 (3). A folding underframe for an ironing board, table or the like comprises two pairs of legs 4 and 5 pivoted on a common axis by means of a bracket 3 having lugs 3<SP>2</SP>, and a strut 9, pivoted at one end to the legs 4 the other end having a cross-bar 9<SP>1</SP> slidable in guides 11 with end stops. The outer pair of legs 5 carries an abutment 13 for the strut to hold the structure in erected position, the abutment consisting of a metal cross-bar suitably cranked to enable the structure to fold flat. The legs may be of metal and U-shaped.
Patent GB-1186851-A (GB)
Title: Improved means to prevent birds lodging on buildings
Inventor: JOHNSON ROBERT MURRAY
IPC: A01M29/06
Filed: 1966-01-21
Abstract: 1,186,851. Flexible tubes. R. M. JOHNSON. 21 April, 1967 [21 Jan., 1966], No. 2835/66. Heading F2P. [Also in Division A1] In order to prevent the fouling of ledges, e.g. of window sills, lintels, cornices &c. on buildings, at least one collapsible tube of flexible material e.g. polythene, is secured to the ledge, one end of each tube having an inlet aperture connected to a source capable of supplying pulses of compressed air, or gas, and a restricted outlet being located at, or adjacent, the other end. A tube may be secured to a ledge of wood, or concrete, by nails passed through it adjacent one side remote from the outer edge of the ledge, alternatively eyelets may be provided along one side of the tube for fastening to pins, or hooks, mounted upon a ledge. A tube, or each of a plurality of tubes, may be connected to a pulse delivering air- or gas-compressor, or to a compressor through a pulse-producing valve, either of which arrangements may be controlled by an adjustable timing device. Alternatively, or additionally, a compressor may be controlled by a pressure-sensitive switch operable by the weight of a number of birds settling upon the tube or tubes. As shown, each of the tubes C has a restricted outlet D the tubes being connected to sub-headers E or to a header H which communicates with a pressure-sensitive switch valve B leading to a compressor A.
Patent GB-580089-A (GB)
Title: Improvements in and relating to electrical apparatus immersed in insulation materialwithin hermetically-sealed enclosures
IPC: H01F27/14
Filed: 1943-02-22
Abstract: 580,089. Pressure-relieving devices. DODDS, J. M., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Feb. 22, 1943, No. 2932. [Class 135] An enclosure for liquid - immersed electrical apparatus, e.g. a pulse transformer for producing high peak voltage for use in apparatus as described in Specification 578,510, [Group XL], consists of cup-shaped members C, c attached at their open ends, the member C of rigid material being arranged to locate and support the apparatus, and the member c having a bellows-like circumferential wall. The member C may be formed of metal, a synthetic resin such as that known under the Registered Trade Mark " Bakelite," or any thermosetting plastic. The member c may be formed of a metal or alloy, e.g. such as known under the Registered Trade Marks " Tombak " or " Sylphon," or of non-metallic material, e.g. " Neoprene."
Patent GB-538842-A (GB)
Title: Improvements relating to the manufacture of crepe yarn and crepe fabric
Filed: 1940-02-16
Abstract: 538,842. Craping yarns. BRITISH CELANESE, Ltd. Feb. 16, 1940, No. 2961. Convention date, Feb. 21, 1939. [Class 15 (ii)] [Also in Group IX] Crape yarns of an organic derivative of cellulose are produced by sizing them with soya-bean protein and highly twisting them in the presence of wet steam or hot water. Fabrics containing the yarns may be subjected to hot aqueous treatment in a craping bath of 80-85‹ C. or higher. An example is given and Specifications 437,019, 438,589, 438,590, 438,591 and 438,654, [all in Group IX], are referred to. The Specification as open to inspection under Sect. 91 comprises also the use of other proteins obtained from gelatin or modified gelatin, albumens such as egg albumen, casein and sericin, proteins treated with aldehydes, gums, starches, methyl cellulose that swells in hot water, and alkali soluble cellulose ethers, and the substance may be added to the spinning solution ; the fabric may be treated prior to the craping bath with aqueous solutions of saponifying agents, and two other examples using gelatin are given. This subject-matter does not appear in the Specification as accepted.
Patent GB-330226-A (GB)
IPC: C01B17/74
Filed: 1929-01-29
Abstract: 330,226. Tocco, L. Nov. 7, 1928, [Convention date]. Radiations, facilitating chemical reactions by; gases and vapours, treating electrically.-Reactions between gas or liquids and liquids or solids are accelerated by subjecting the substances to the action of an electric field produced by an alternating current of a voltage of 25000-150000, a frequency of 25-500 periods, and an intensity of a fraction of an ampere. The conditions must be such as to avoid electrolysis. According to examples (1) sulphuric acid is obtained by passing sulphur dioxide and air into a chamber which is connected to one pole of the source of current while the supply pipes of the gases are connected to the other pole; (2) sulphate of ammonia is obtained by passing a solution of ammonium carbonate containing calcium sulphate in suspension through a series of superimposed funnels alternate members of which are connected to each pole of the alternator. Specifications 2260/13 and 254,375 are referred to.
Patent GB-682201-A (GB)
Title: A bitch harness
IPC: A01K21/00
Filed: 1950-02-07
Abstract: 682,201. Veterinary appliances. TINN, N. M. Feb. 7, 1951 [Feb. 7, 1950], No. 3078/50. Class 81 (ii). A bitch harness comprises a shield b to cover the vulva, the shield b being perforated and secured to the body by three straps a, h attached to a girth strap d two straps a passing on either side of the rectum and tail and one strap h passing between the hind legs. The straps a secured to the girth strap d are also secured to a collar e by a strap j.