baber/WOPTO huggingface dataset:
Patent GB-404981-A (GB)
Title: Improvements in thermionic valve amplifiers
IPC: H03F3/02
Filed: 1932-07-23
Abstract: 404,981. Valve amplifying circuits. MIDGLEY, A. H., Wembley Hill Estate, Wembley, Middlesex. July 23, 1932, No. 20847. [Class 40 (v).] Relates to a photoelectric cell amplifier comprising a resistance a, connected between the positive pole of the anode supply and the negative pole of the grid bias supply, in parallel with a portion of which is connected the photo - electric cell b in series with a resistance c, the grid of the valve f being connected to the junction of the cell b and resistance c, and is characterised by the feature that the cell b and resistance c are connected to the resistance a by variable connections so that the grid bias and the cell potential may be independently adjusted. Preferably a condenser d is connected across the cell b and the resistance c. The valvo f may bo biassed by the so-called " free bias " method, (Fig. 2, not shown).
Patent GB-824568-A (GB)
Title: Improvements in or relating to manufacture of carbon insert brake shoes
Inventor: CATON ELMER ELLSWORTH
IPC: F16D69/02
Filed: 1956-07-06
Abstract: 824,568. Making brake shoes; assembling force fits. AMERICAN BRAKE SHOE CO. July 6, 1956, No. 21022/56. Classes 83 (2) and 83 (4). [Also in Group XXXIV] In a method of making an expanded metal reinforcing bundle 20 for castiron railway brake shoes, blocks of friction-modifying material 23 are forced into openings 22 in a stack of expanded metal sheets 21 so that the cut edges of the openings interlock with the blocks, and the sheets are then secured together as by bands 25. A preformed flanged expanded metal cap 24 is fitted over the upper layer of the bundle to assist in the retention of the blocks, and the bundle is then bent to arcuate form and dipped into a refractory coating material. An apparatus for assembling such bundles locates a stack of expanded metal sheets, with aligned openings already cut out, between blocks 35 and 36 on an elevated work-table 31, Figs. 5 and 6. A platen 40 with an extension block 40B is pivotally mounted on rocker arms 42 and may be raised or lowered pheumatically to clamp the stack in position. Tapered carbon insert blocks 23 are manually fed into tapered apertures 37 aligned opposite the cut-out openings in the stack. After the clamping platen 40 is in position the insert blocks are forced into the openings by a plurality of fingers 68 mounted on slides 65F and 65R actuated by a pneumatic cylinder 76. The preformed cap 24 is then placed on the stack either manually or by using platen 40. The work is then removed to other machines for securing the bands 25 and for bending to arcuate form. In a modification insert blocks 23 may be forced into the stack vertically using a platen 140, Fig. 12.
Patent GB-320671-A (GB)
Title: Improvements in or relating to systems for the electrical transmission and reception of pictures, diagrams or other representations
IPC: H04N1/36
Filed: 1928-07-20
Abstract: 320,671. Fulton, O. July 20, 1928. Synchronous movements.-In a copying-telegraph using rotating transmitting and recording drums, the synchronizing and picture signals are applied to a receiving circuit containing an electromagnetic device 22, which, when energized by a synchronizing signal, releases a catch 24, previously holding the receiving-drum stationary, and engages a clutch b for coupling the receiving- drum to its drive, and means 3, 6, controlled by the rotation of the drum, maintain the clutch in engagement when the synchronizing signal ceases. When a point D at the beginning of a conducting- segment DE on the transmitting-drum, Fig. 2, arrives at the transmitting-stylus a current is transmitted which causes the closure of the contacts of the relay 22, Fig. 1. The catch 24, Fig. 4, is thus attracted and closes contacts 2 to energize the electromagnetic clutch b. Contacts 3 then close, through the movement of a cam 6, and a slot 25 in the recording-drum moves clear of the catch before the point E reaches the transmitting-stylus, when the relay contacts open. While the transmitting-stylus is opposite a point between E and the beginning A of the picture, cam jack 4 transfers the output of an amplifying valve 21 from the relay to recording-apparatus 23, and when the point A reaches the stylus, the picture starts. As the end C of the picture reaches the transmitting-stylus, the picture ceases, and as a point M between C and D reaches the stylus, the cam jack 4 transfers the output of the valve to the relay. Immediately afterwards, the contacts 3 are opened to release the clutch and the catch drops into its slot, where it remains until the above process is repeated on the arrival of the point D at the stylus. Alternatively, the segments CD, EA are of conducting material and DE is insulating, and the transmitter is arranged as described in Specification 320,673. The apparatus may be modified to operate with optical transmitting-apparatus. Specification 307,365 also is referred to and Specification 318,121 is referred to in the Provisional Specification.
Patent GB-906978-A (GB)
Title: Polymeric compositions on the basis of alpha-olefin polymers, stabilized against heat, ageing and light
IPC: C08K5/092
Filed: 1961-06-12
Abstract: A crystalline a -olefin polymer is stabilized with tetrapropenyl-succinic acid anhydride.  Optional ingredients are antiacid agents such as calcium stearate, and basic nitrogen compounds acting as dyeing agents.  The examples illustrate the stabilization of stretched fibres of polypropylene.  The compositions may also be formed into films, tape, yarns and fabric.
Patent GB-499799-A (GB)
Title: Improvements in or relating to the cylinders of internal combustion engines
IPC: F02F1/18
Filed: 1937-07-30
Abstract: 499,799. Cooling cylinders. SULZER FRERES SOC. ANON. July 30, 1937, No. 21159. Convention date, Sept. 22, 1936. [Class 7 (ii)] In a cylinder having opposed pistons, passages 13, 14 for the cooling fluid are so formed, in the wall surrounding the central combustion chamber, that they are nearest the cylinder bore at the central section. They may be formed in two straight sections as shown, or in single straight sections arranged obliquely to the cylinder axis. Byepasses 15 may be arranged round the fuel-injection devices.
Patent GB-140967-A (GB)
Title: Improvements in the manufacture of explosives
IPC: C06B23/00
Filed: 1919-08-28
Abstract: 140,967. Hedberg, G. A. Aug. 28, 1919. Explosives.-Consists in mixing explosives, especially powdered and granular explosives, with meal of pine bark to which a meal of pine cones may be added. The object is to improve detonation and prevent absorption of moisture.
Patent GB-221520-A (GB)
Title: Improvements in electro-dynamic transmission systems
IPC: B60L50/11
Filed: 1923-04-25
Abstract: 221,520. Sperry Development Co., (Assignees of Sperry, E. A., and Drake, H. C.). May 5, 1922, [Convention date]. Clutches, friction; operating clutches.-In an electric power transmission system for vehicles a clutch is provided for instituting a one-to-one drive between a driving shaft 2 and a driven shaft 14. An annular member 27 containing a magnetizing coil 29 is secured to the shaft 14, and opposite this is positioned a member 30 secured by springs 31 to a sleeve 8 fast upon the shaft 2, a heavy coil spring 33 being connected to the sleeve 8 and the member 30. A differential device depending upon the relative speeds of the shafts 2, 14 closes contact to energize the coil 29 and cause the spring 33 and its associated parts to act as a clutch for instituting the one-to-one drive.
Patent GB-373479-A (GB)
Title: Improvements in or relating to tilting seats for vehicles
IPC: B60N2/18
Filed: 1931-07-24
Abstract: 373,479. Tilting seats for vehicles. MENIER, G., 61, Rue de Monceau, Paris. July 24, 1931, No. 21251. Convention date, Sept. 27, 1930. [Class 52 (ii).] A vehicle seat 2 is adapted to tilt forward on its front edge 3 by means of fluid-pressure operated jacks 7 acting at the rear of the seat. The moving member 6 of the jack 7 is connected to the seat by a pivot 5, the jack itself being adjustably articulated at 8 in holes 9 in the fixed chassis portion. Fluid pressure in the jack is generated in the pump 11, which is wperated by a small motor 14 functioning under the action of the vacuum of the inlet manifold of the engine of the vehicle. With the engine running, throttles 16, 17 are opened by levers 18, 19 respectively and fluid is pumped into the jack from the reservoir 12. The seat can be maintained in any position by closure of the throttle 17.
Patent GB-830484-A (GB)
Title: Improvements in cooking apparatus
Inventor: OATLEY ARTHUR FREDERICK
IPC: F24C15/10
Filed: 1957-07-05
Abstract: 830,484. Drip travs: hotolate stoves; electric hotplate. OATLEY TECHNICAL DEVELOPMENTS Ltd. Oct. 3, 1958 [July 5, 1957(2)], Nos. 21279/57 and 21280/57. Classes 39(3) and 126 In a hot plate 3 movable from a horizontal to a substantially vertical position, a drip tray below a pan support 8 has a container 14 along the edge which, in. the substantially vertical position of the hotplate 3, is the lowermost one, the container 14 having an opening directed across the tray 7 to trap spillage as the hotplate is tilted. The container 14 may be a casting or sheet metal pressing integral with, or sealed to, the tray 7 or it may be a separate member of anodized extruded aluminium. An annular flange 10 integral with or secured to the burner 9 or heating element (not shown) seals the burner 9 to the tray 7 by means of clamps 12 bolted to lugs projecting from the burner head, a heat resistant washer 11 being interposed between the flange 10 and tray 7. A preferably detachable sheet metal cover 15 is spaced from the tray 7 and encloses the underside of the burner 9 or heating element. In an electric hot-plate (not shown) a radiant spiral heating element has its ends turned down from: the plane of the pan support and has its rigid casing tube mounted on a substantially circular support which has a central cylindrical portion through which the electrical connections to the resistance element are made and which passes through, and is sealed to, the drip tray 7, as described above.
Patent GB-269046-A (GB)
Title: Apparatus for ozonising air and converting it into nitric oxide
IPC: C01B21/20
Filed: 1926-08-30
Abstract: 269,046. Negle, A. Aug. 30, 1926. Gases, treating with electric discharge. - An ozonizer of the condenser type, and three or more electrodes producing a large-surface are, are connected to a high-voltage, high-frequency polyphase supply circuit and arranged in a closed chamber so that dried and purified air passes twice radially through the ozonizer and then through the arc. It is advisable to use current having a frequency of at least 350 and a voltage of 12,500. The ozonizer comprises a disc divided into three insulated sectors 5a, connected to the polyphase supply, and coated with dielectric material 7 such as glass or mica. Supply and removal pipes 9, 10, which are earthed, are provided with large flanges 4 on opposite sides of the disc, around the edge of which the gas is this constrained to pass. A nozzle 11 on the pipe 10 is situated below the arc electrodes 12<a>-12<c>, each of which has a spherical enlargement to increase the electrostatic action. Six arcing electrodes may be provided instead of three. The electrodes 12<a>-12<c> and the flanges 4 may be adjustable. A partition 3 separates the ozonizer and arc chamber.
Patent GB-1473612-A (GB)
Title: Method and device for pneumatic false twisting
IPC: D01H1/115
Filed: 1975-05-20
Abstract: 1473612 Pneumatic false twisting K GOTZFRIED 20 May 1975 [22 May 1974] 21399/75 Heading DID Staple fibres are pneumatically false twisted by an air stream with components in the direction of thread movement and in a direction spirally around the thread, these being generated in a swirl zone comprising a narrow swirl channel 9 which widens conically at an acute angle, this widening can also occur at a stepped fashion. The apparatus to perform this method also has a concave suction recess or annulus 7 located upstream and/or downstream of the swirl channel 9. As shown in Fig. 1 staple fibres 1 are combined with continuous filament 2 to provide a core yarn the staple fibre ends being lifted from the yarn while the continuous filament is false twisted so that as the twist stabilizes a yarn with good tear resistance is produced. More than one swirl channel may be provided, successive channels having opposite directions of swirl. Between the channels suction recesses are provided to aid the reversal of twist direction. As shown in Fig. 1 a twist stop 8 is provided and the swirl air flow in channels 9 is produced by tangential air ducts 9a.
Patent GB-1139770-A (GB)
Title: Second order pressure gradient microphone
Inventor: GAYFORD MICHAEL LAWRENCE
IPC: H04R1/40
Filed: 1966-05-13
Abstract: 1,139,770. Microphones. STANDARD TELEPHONES & CABLES Ltd. 13 May, 1966, No. 21401/66. Heading H4J. A second order pressure gradient microphone includes two diaphragms and speech coil assemblies 1, 2 mounted at the ends of a common bar magnet 7. The speech coils are connected in opposition. Air gaps are defined by polepieces 3, 4 and 5, 6. Twin leads 9 are carried through a boom 10 screwed into a circlet 11. Apertured grilles 12 are secured to a body 8. Access of sound waves to the rear of the diaphragms is by sets of holes 14, 15. A spacer 16 prevents communication between sound entering through the holes 14 and sound entering through the holes 15.
Patent GB-1110846-A (GB)
Title: Process for the preparation of cyclamic acid and novel silane intermediates therefor
Inventor: ANDERSON ROBERT CRAIG
IPC: C07F7/08
Filed: 1966-05-13
Abstract: Novel cyclohexylsulphamoxy silanes used for the preparation of cyclamic acid (see Division C2) of the formula <FORM:1110846/C3/1> wherein R is an alkyl group such as methyl, ethyl, propyl or butyl, a is 1, 2, 3 or 4 and b is (4-a) are prepared by the reaction of SO3 or a silyl ester of a halogenosulphonic acid having the formula R1mSi(SO3X)n, wherein R1 is an alkyl group, X is a halogen atom, n is 1 or 2 and m + n equals 4, with a cyclohexyl aminosilane having the formula <FORM:1110846/C3/2> The examples give the preparation of (1) cyclohexylsulphamoxy trimethyl silane and (2) bis-(cyclohexylsulphamoxyl) dimethyl silane by the reaction of (1) trimethylsilyl chlorosulphonate, the adduct of trimethylchlorosilane and sulphur trioxide, and cyclohexylaminotrimethyl silane, prepared by the reaction of cyclohexylamine and trimethylchlorosilane, in trimethylchlorosilane as solvent; and by the reaction of di-methylsilyldichlorosulphonate, the adduct of 1 mole of dimethylchlorosilane and 2 moles of sulphur trioxide, and bis(cyclohexylamino)-dimethylsilane, prepared by the reaction of cyclohexylamine and dimethyldichlorosilane in the absence of solvent. The preparation of the cyclohexylsulphamoxysilanes and the cyclohexylaminosilanes are preferably effected at 0-30 DEG  C. and 30-70 DEG  C. respectively.  The hydrolysis of the cyclohexylsulphomoxy silane of Example 1 to produce cyclamic acid yields hexamethyldisiloxane as a by-product.ALSO:Cyclamic acid is prepared by hydrolysing cyclohexyl sulphamoxy silanes of the formula <FORM:1110846/C2/1> wherein R is an alkyl group such as methyl, ethyl, propyl or butyl, a is 1, 2, 3 or 4 and b is (4-a).  The preferred cyclohexylsulphamoxysilanes are cyclohexylsulphamoxy trimethyl silane and bis (cyclohexylsulphamoxy) dimethyl silane (see Division C3).  The hydrolysis is effected by adding the cyclohexyl sulphamoxy silane to an excess of hot water, with stirring, followed by concentration, which removes hexamethyldisiloxane, and crystallization.
Patent GB-1208277-A (GB)
Title: Process for the production of esters
Inventor: CLARK CYRIL
IPC: C07C69/82
Filed: 1967-05-09
Abstract: 1,208,277. Production of esters. IMPERIAL CHEMICAL INDUSTRIES Ltd. 23 April, 1968 [9 May, 1967], No. 21436/67. Heading C2C. A process for the production of glycol esters of dicarboxylic acids comprises reacting in an organic solvent an olefine oxide, a dicarboxylic acid in the presence of ammonia or an ammonium salt of a carboxylic acid. In the examples bis-(#-hydroxyethyl)-terephthalate is prepared by reacting terephthalic acid with ethylene oxide in the presence of ammonium terephthalate as catalyst.
Patent GB-217471-A (GB)
Title: An improved material for use in the construction of tennis playing courts, promenades, and the like
IPC: E01C13/06
Filed: 1923-08-24
Abstract: 217,471. Turner, S. Aug. 24, 1923. Monolithic flooring.-Hard courts for tennis, promenades, and the like are made of a non- cementitious material consisting of a gritty substance, such as either ground brick or fine ash, or a mixture of both, and asbestos fibre. Such floors are formed in layer form, the proportion of asbestos in the mixture being greatest in the lowest layer and diminishing in each superposed layer so that the upper surface contains little or no asbestos.
Patent GB-960892-A (GB)
Title: Improvements in or relating to methods of producing doped silicon or germanium
IPC: C30B25/02
Filed: 1961-06-14
Abstract: A homogeneously doped silicon is produced by mixing in the liquid phase a halogen compound of silicon consisting of a silicon halide or or halosilane with a halide of a doping element of Group III or V of the Periodic System having a boiling point differing by not more than 50 DEG C. from that of the silicon halogen compound, evaporating the liquids by passing a carrier gas through them at such a rate that the ratio of silicon to doping element in the residual liquid remains constant and passing the gas mixture over the surface of a carrier of silicon heated to a temperature such that silicon and the doping element are deposited from the gas on to the surface of the carrier. The carrier may be silicon doped with the doping element and the ratio of silicon halogen compound to the doping element halide in the liquid is so adjusted, by determinations of the extent of doping of deposited silicon obtained with liquid mixtures of known concentrations, that the extent of doping of the deposited silicon e.g. as a monocrystal is the same as that of the carrier e.g. a monocrystal.  The carrier gas may be hydrogen. The gaseous mixture e.g. SiCl4 or SiHCl3 may contain a hydrogen halide, e.g. HCl.  The doping substance may be PCl3, POCl3, AsCl3 or BBr3.  Specifications 795,191, 809,250, 812,818, 926,807 and 960,893 are referred to.ALSO:A homogeneously doped germanium or silicon is produced by mixing in the liquid phase a halogen compound of germanium or silicon consisting of a germanium halide or halogermane or a silicon halide or halosilicone with a halide of a doping element of Group III or V of the Periodic System having a boiling point differing by not more than 50  DEG C. from that of the germanium halogen compound, evaporating the liquids by passing a carrier gas through them at such a rate that the ratio of germanium to doping element in the residual liquid remains constant and passing the gas mixture over the surface of a carrier of germanium heated to a temperature such that germanium and the doping element are deposited from the gas on to the surface of the carrier. The carrier may be germanium doped with the doping element and the ratio of germanium halogen compound to the doping element halide in the liquid is so adjusted, by determinations of the extent of doping of deposited germanium obtained with liquid mixtures of known concentration, that the extent of doping of the deposited germanium e.g. as a monocrystal is the same as that of the carrier e.g. a monocrystal.  The carrier gas may be hydrogen.  The gaseous mixture e.g. GeCl4 or GeHCl3 may contain a hydrogen halide e.g. HCl.  The doping substance may be PCl3, POCl3, AsCl3 or BBr3.  Specifications 795,191, 809,250, 812,818, 926,807 and 960,893 are referred to.
Patent GB-504527-A (GB)
Title: Improvements in time-controlled actuating mechanism
IPC: G03B17/42
Filed: 1938-07-20
Abstract: 504,527. Time switches; actuation of switches. SCHWARTZ, K. July 20, 1938. No. 21551. [Class 38 (v)] A time switch comprises a time controlled actuating device 1 such as a clockwork or a synchronous motor which through pawl-and-ratchet mechanism 4, 5 advances a wheel 6 through one step in each unit of time. Wheel 6 drives a numbered wheel 11 through a wheel 7 on a shaft 20. Wheel 11 carries a pin which at every tenth step is arranged to move a second numbered wheel 12 one step through a wheel 61, and so on for successive wheels 13, 14 and 15. The wheels 11-15 are in driving engagement with similar numbered wheels 21-25 each freely rotatable on a shaft 8. The wheels 21-25 are each formed with drums 31-35 which are engaged by the arms of a pivoted multi-armed lever 9, the arrangement being such that when notches 41-45 on the drums 31-35 are in alignment, the lever 9 can move under the action of a spring (not shown) to perform a switching or other operation. To commence at @imed operation, all the wheels 11-15 are set so that the number 0 appears in a window in the casing of the apparatus and the wheels 21-25 are disengaged from wheels 11-15 by moving the whole assembly by a lever 17. The time of the delayed operation is then set on wheels 21-25 which are then re-engaged with wheels 11-15. This causes the arms of lever 9 to be moved out of notches 41-45 and the apparatus is set. Wheel 6 is then stepped round by the timing device 1 and when the set interval is shown on wheels 11-15, wheels 21-25 will have been rotated back to their zero positions in which notches 41-45 are in alignment and lever 9 moves to effect the switching or like operation. If it is desired to repeat the operation automatically after the same interval, movement of the lever 9 also completes the circuit of a resetting magnet 3 which tilts the carriage 19 to disengage the driving wheels 7, 61-64 of wheels 11-15 and at the same time to cause specially shaped limbs depending from carriage 19 to engage heart-shaped cams 51-55 on wheels 11-15 to return all the wheels to the zero position. This action returns wheels 21-25 to the set position, thus moving lever 9 to de-energize the magnet 3 and the apparatus is in its initial set position ready for a further timed operation. A modification is described in which repetition of the operation is effected by transferring the drive of device 1 from wheels 11-15 to wheels 21-25, thus driving the apparatus back to its initial position. The apparatus is stated to be applicable for taking a series of photographs at timed intervals.
Patent GB-1302645-A (GB)
IPC: G09F9/302
Filed: 1971-04-19
Abstract: 1302645 Matrix displays INTERNATIONAL STANDARD ELECTRIC CORP 19 April 1971 [16 Feb 1970] 21553/71 Heading G5C An alpha-numeric display device comprises a plurality of selectively activated segments arranged on or adjacent the sides, centre lines and diagonals of an approximately non- rectangular parallelogram, there being a plurality of segments on each side and centre line, a circular segment at the centre of the parallelogram and curved segments extending approximately along the diagonals, preferably forming parabolas tangential at the centre. With this arrangement of segments the failure of one segment can be detected and the possibility of one character appearing as another due to such a failure is prevented. The device comprises a metal die casting having an array of chambers in the form of the segments each containing an incandescent lamp and covered with a frosted sheet. The lamps are mounted on a printed circuit board and are directly switched by integrated circuits including shift registers or their brightness is controlled by amplifiers.