baber/WOPTO huggingface dataset:
Patent GB-236816-A (GB)
Title: Improvements relating to portable electrical rectifying devices
IPC: H02M7/36
Filed: 1924-12-15
Abstract: 236,816. Gill, H. A., (Deutsche Telephonwerke und Kabelindustrie Akt.-Ges.). Dec. 15, 1924. Drawings to Specification. Metallic compositions.-Contact blocks used in an oscillatory electric rectifier are composed of equal parts by weight of copper and graphite.
Patent GB-621812-A (GB)
Title: Process for dehydrating castor oil
IPC: C09F5/06
Filed: 1946-10-09
Abstract: Castor oil is dehydrated to form a drying oil by passing it at a temperature between about 200 DEG  and 325 DEG  C. and at a reduced pressure of not more than 50 mm. of mercury over a catalyst comprising a chemical compound formed by calcining a liquid phosphoric acid with a siliceous absorbent to a temperature at which chemical combination takes place, e.g. for 10 hours at 450 DEG  C. in the case of a mixture of orthophosphoric acid and kieselguhr containing about 60 per cent of total P2O5, the free P2O5 in the calcined catalyst being thereby reduced to 4.4 per cent.  The catalyst may be placed in a stainless steel reaction tube within an electrically heated furnace fitted with a preheater, the portion of the tube in the preheater being packed with quartz chips.  When castor oil is passed over this catalyst at an hourly space velocity of 1, a temperature of 275 DEG  C., and a pressure of 30 mm. of mercury, 89 per cent by weight of dehydrated oil is collected in the receiver, while 1.9 per cent and 1.3 per cent respectively of such oil can be recovered from the catalyst and the quartz chips respectively when these are flushed with nitrogen.  The catalyst is regenerated by burning in air.  The process may be carried out in the presence of an inert diluent such as paraffinic hydrocarbons of the gas oil type sufficiently low-boiling to be separable by vacuum distillation from the dehydrated oil, but high-boiling enough to remain liquid during the dehydration reaction.  U.S.A. Specification 1,993,513 is referred to.
Patent GB-453252-A (GB)
Title: Improvements in or relating to processes of extrusion, and presses therefor
IPC: B21C25/00
Filed: 1935-10-31
Abstract: 453,252. Extruding metals and plastic substances. KREIDLER, A., 110, Robert Boschstrasse, Stuttgart, Germany. Oct. 31, 1935, No. 30117. Convention date, Oct. 31, 1934. [Class 83 (iv)] [See also Group V] Metals or other plastic materials are extruded by a press comprising an auxiliary disc of smaller diameter than the receiver placed before the extrusion plunger and movable with relation thereto, the outer layer of material which may contain impurities being separated by the disc so that it flows rearwardly into the increasing space between the disc and the plunger. The material 4, Fig. 3 is extruded by a plunger 5 with a head 7. A disc 9, having an extension 11 which engages in the bore 8 of the member 7 is of a smaller diameter than the cylinder 6 and is disposed between the member 7 and the press material 4, the outer skin of material being separated as the bar 3 is extruded, and coiling up in the chamber 13 which increases in size as the member 9 advances relatively to the member 7 during the extrusion operation. Modifications are described wherein the front face of the member 9 has a sharp circumferential edge to separate the outer shell more readily, and in which cavities are provided in the rear face of the disc 9 to receive the material of the outer shell. The disc 9<a>, Fig. 8, may be positively advanced relatively to the member 7<a> by a rod 14 having a guiding-piece 24 sliding within a bore 25 in the piston 19, and connected through a link 22 to a lever 20, 21, centrally pivoted to the piston 19, a lever 23 pivoted about a stationary pivot 28 being connected to the lever 21 through an adjustable lostmotion connection 29, 30. A highly heated disc may be placed before the disc 7 or 7<a>.
Patent GB-286347-A (GB)
Title: Improvements relating to apparatus for exhibiting pictures, advertisements and the like
IPC: G09F11/29
Filed: 1926-11-29
Abstract: 286,347. Preston, C. H. F. Nov. 29, 1926. Reel and non-endless web apparatus; boards, reciprocating. - An advertising and like device comprises a number of independent removable spring roller units built up of end plates K connected together by the roller shaft and provided with V-section trolley wheels 26, the plates K being notched to receive the ends of the anchor rod 24. Two separate sets of units are employed, each moving in a closed track circuit at the top and bottom respectively of the apparatus. A carrier G provided with four pairs of rails A<1> for receiving the units is reciprocated vertically on guides 3 by an endless moving chain, the display sheets on the two travelling units therein being one rolled up and one unwound in the movement. The chain is connected by a pin 9 to a crank 8 on the carrier G, Fig. 6, the crank imparting motion to the carrier through two spring-pressed catches 10 which are depressed by a stationary projection at each end of the travel to permit the crank 8 to turn through 180‹. On each side of the apparatus are arranged four lifts B all connected together so as to move simultaneously in the same direction by a rotating crank and connecting rod. The lifts B serve to carry units between the upper and lower rails A<1> in each circuit, pushers actuated by a roller 14 on the crank 8 effecting the transfer of units out of and into the lifts B to and from the track rails A<1>. The carrier G is provided with an electrically illuminated sign N, Fig. 4. held against a bracket 0 on the carrier by springs 27 which allow the sign to tilt to permit the egress of the units from the carrier at each end of its travel. The sign N conceals the units in the carrier, and is provided with a stencil removable through a top edge 29. The displayed sheets may be illuminated from the rear.
Patent GB-220529-A (GB)
Title: Improvements in distance pieces for use in securing rails to railway sleepers
IPC: E01B9/32
Filed: 1923-11-30
Abstract: 220,529. Bayley, J. P. Nov. 30, 1923. Chairs; sleepers. - Distance pieces for securing flat-bottomed rails to chairs or sleepers are made suitable for either right or left hand use. The section of any reversible key may be used, and the horns or projections at each end may be either single and central as at 11, Fig. 4, or one at each edge as at 12, Fig. 5, or continuous as at 8, Fig. 1. A tapered distancepiece may have a section shown for a key in Specification 220,522.
Patent GB-829840-A (GB)
Title: Improvements in or relating to a connecting device for electrical apparatus
IPC: H01R24/20
Filed: 1957-09-27
Abstract: 829,840. Two-part couplings. ECRIM. Sept. 27, 1957 [Oct. 3, 1956], No. 30418/57. Class 38 (1). An electrical connector comprises an insulating sleeve having two end portions of different diameters. connected by a portion of progressively variable section the larger end portion being provided with sockets 18, 19 or pins, to which insulated wires 14, 15 are connected. The end portion 1, through which the insulated wires pass is joined to the other end portion 3 by a tapering section 2 which may be ribbed. A partition 10 separates the connecting members 18, 19.
Patent GB-718249-A (GB)
Title: Improvements in wind-power plant driving with several generators
Inventor: HUETTER ULRICH
IPC: H02J4/00
Filed: 1952-12-03
Abstract: 718,249. Driving dynamos. ALLGAIER WERKZEUGBAU GES. Dec. 3, 1952, No. 30632/52. Class 35 A wind wheel 1 drives a D.C. generator 4 and a 3-phase alternator 3 arranged to supply D.C. and A.C. networks 6, 5 respectively. A battery 14 acting as a buffer battery is in parallel with the generator 4 via a reverse-current cut-out 13, while a voltage regulator 21 maintains a desired constant voltage applied to the network 6.
Patent GB-200023-A (GB)
Title: Improvements in or appertaining to wheels for road vehicles
IPC: B60B9/18
Filed: 1922-11-09
Abstract: 200,023. Green, C. Nov. 9, 1922. Spring wheels.-The hub part A and an outer part B carrying the felloe are connected together by annular U- shaped strips C of leather or the like arranged in pairs to form annular chambers c in which pneumatic cushions are arranged. The hub part A is formed with a central flange A<1> between the two pairs of leather strips, the sides of these strips contacting with the flange A' when the cushions are inflated and preventing lateral movement.
Patent GB-191235-A (GB)
Title: Improvements in and relating to processes and apparatus for cooling coke
IPC: C10B39/02
Filed: 1921-11-17
Abstract: 191,235. D³ll, R. Nov. 17, 1921. Superheating by hot gases other than furnace gases.-In apparatus for the cooling of incandescent coke in which gas is circulated by a fan f; Fig. 1 through the coke on an endless grate e and a steam generator comprising a feedwater heater o, a boiler n and a superheater m, the coke is acted upon in three zones, of which the first is the hottest and the last the coolest. The gas from the zone i passes over the superheater m and is then mixed with gas from the zone k. The mixture passes through the tubes of the boiler n, and then around this boiler and the feedwater heater o before entering the return flue q, while the gas from the coolest zone passes only through the tubes of the feedwater heater. In another form of apparatus the hotter gases pass successively over the superheater, the boiler and the feedwater-heater.
Patent GB-841780-A (GB)
Title: Improvements in drilling machines
IPC: B25H1/00
Filed: 1957-10-01
Abstract: 841,780. Drilling-machine details. WILMOT, K. Sept. 29, 1958 [Oct. 1, 1957], No. 30668/57. Class 83(3). In a radial-arm drill, the drill-head A pivots relatively to the radial arm B<SP>1</SP>. The drill-head is vertically - adjustable on a pillar B carried by arm Bl, which has a spigot b<SP>1</SP> bearing in the table C.
Patent GB-779164-A (GB)
Title: Improvements in gas turbine power piant and control system therefor
Inventor: BAKER JOHN HAYNES
IPC: F02K1/16
Filed: 1954-10-25
Abstract: 779,164. Gas turbine jet propulsion engines. GENERAL ELECTRIC CO. Oct. 25, 1954, No. 30688/54. Class 110 (3). [Also in Group XXXV] The turbine exhaust temperature of a jet engine incorporating reheat is automatically maintained constant by varying, in accordance with the temperature deviations: (1) the jet nozzle area, (2) the reheat fuel supply if deviations persist when the maximum nozzle area has been reached. The engine 1 has its main fuel regulator 9 controlled by a throttle 13, and its reheat fuel regulator 21 controlled through a differential 24 by a throttle 23. Inlets 15, 22 provide a pressure bias for regulators 9, 21 respectively. The output of thermocouples 31 sensing the temperature in tailpipe 17 is applied to the electrical control circuits 32 for comparison with a reference value, and the resulting error signal energizes a reversible motor 27 so as to vary the jet nozzle area 26 to compensate for temperature deviations. A closed limit switch 49 for the jet nozzle may be operated to stop the motor, and an open limit switch 44 may be operated to transfer any positive error signal to a second reversible motor 69, if such a signal persists with the nozzle fully open. Motor 69 then drives the cage 24 of differential 64 in a sense as to override any increased refuel flow called for by throttle 23, and regulator 21 reduces the reheat fuel flow until the temperature is restored. Motor 69 also drives a cam 74 operating limit switches 75, 76, which are actuated respectively to stop the motor if a predetermined minimum reheat fuel flow is reached and to return the temperature control to the nozzle-area adjusting motor 27 if a negative error signal persists even with the override tending to increase the reheat fuel flow. A stabilizing negative feedback circuit is included in the control mechanism 32.
Patent GB-1444067-A (GB)
Title: Control arrangement
IPC: G06F1/12
Filed: 1974-07-11
Abstract: 1444067 Data processing; timing system INTERNATIONAL STANDARD ELECTRIC CORP 11 July 1974 [13 July 1973] 30698/74 Heading G4A [Also in Division H3] In an arrangement in which a pair of first devices each supply a train of first pulses for use in the control of a respective second device each first device further supplies a train of second pulses to the other first device and each first device further includes control logic circuitry which permits a received second pulse to be used to control its associated second device in place of a locally generated first pulse, if a said second pulse is received within a predetermined time interval before a said first pulse is due to be generated. In the embodiment the first devices are pulse generator circuits SD1, SD2 each supplying synchronization pulses SYNC2, STOC<SP>1</SP>2 to a respective one of a pair of computers CO 1 , CO 2  controlling a telephone exchange. No details of the computers or telephone network are given. Each pulse generator (Fig. 2, not shown) comprises a source of clock pulses and a counter which for every 1000 clock pulses produces an output pulse CRO1 (CRO<SP>1</SP>1) (Fig. 5). Alternate ones of the CRO1 (CRO<SP>1</SP>1) pulses are used to produce the second train of pulses SYNC1, (SYNC<SP>1</SP>1) which are supplied to the other generator, the two generators differing only in that in generator SD1 the SYNC2 pulses follow the SYNC1 pulses by 10 Ás., whereas in generator SD2 the SYNC<SP>1</SP>2 pulses follow the SYNC<SP>1</SP>1 pulses by 10Ás. + 5ms. This ensures that there is no conflict between the two computers if they are running in perfect synchronism i.e. the SYNC1 and SYNC<SP>1</SP>1 pulses coincide. If, when the two computers are running, a SYNC<SP>1</SP>1 pulse is received in generator SD1 within 10 clock pulses of pulse CRO1 being produced, the logic circuitry causes the counter to be reset and uses the received SYNC<SP>1</SP>1 pulses to produce a SYNC2 pulse, the SYNC1 pulse being inhibited. Hence if one generator is only slightly faster than the other it controls both computers but if it is too fast, the computers are allowed to run out of synchronism. When one generator is switched on with the other generator already running, the counting of clock pulses is inhibited for a predetermined period during which time the receipt of a SYNC1 (SYNC<SP>1</SP>1) pulse sets the counter going and causes the production of the first SYNC2 (SYNC<SP>1</SP>2) pulse. If, however, a pulse is not received within the predetermined time, the counter is then started and the computers run out of synchronism.
Patent GB-1392252-A (GB)
Title: Reduction of non-linear spatial distortion in holographic system employing different wavelengths for recording and playback
IPC: G03H1/00
Filed: 1972-06-30
Abstract: 1392252 Holography R C A CORPORATION 30 June 1972 [9 July 1971] 30704/72 Heading G2J Non-linear spatial distortion is reduced in images reconstructed from holograms using  coherent energy of substantially different wavelength from that used in forming the hologram, when in the formation of the hologram 116 the object and reference beams 112, 104 are disposed at a given fixed angle # m , the object beam 112 is oriented at a particular certain selected angle α with respect to the normal 124 to the hologram record medium 116 lying in the plane of the object and reference beams, and the reference beam is oriented to line 124 at an angle # which equals # m α, the certain selected value α having that value which an reconstruction gives the minimum overall non-linear spatial distortion with respect to the distortion which would exist if the certain selected angle had any other value. The hologram is preferably a Fourier transform hologram and the object a transparency 110 consisting of two portions. One portion represents the luminance of a scene and the other portion represents in coded form the chrominance. The transparency 110 lies in the focal plane at F, from a convergent lens 114. In reconstructing a coloured image, e.g. at a T.V. camera pick-up with minimum misregistration between corresponding parts in the luminance and chrominance portions a read-out beam 202 of a second wavelength is used. The angle B' of this read-out beam to the hologram 206, and the angle α' of the first order diffraction beam 210, containing the real image, are equal and form an angle bisected by the normal 214 to the hologram. The T.V. camera pick-up lies in the focal plane at F 2  from a convergent lens 216. The Specification gives details of how the respective angles are derived having regard to the magnification due to the difference in wavelengths, the wavelengths themselves, the distances F 1  and F2, and the orientation of the hologram record medium and the developed hologram.
Patent GB-291634-A (GB)
Title: Apparatus for producing a varying light or illumination in television apparatus, photophones and the like
IPC: H04N5/66
Filed: 1926-12-03
Abstract: 291,634. Baird, J. L. Dec. 3, 1926. Television; copy-telegraphs.-A light-valve for use in television &c. comprises two gratings having from 50 to 500 lines to the inch, the lines being separated by spaces equal to them in width. The gratings are ruled on thin glass or other light material. In the arrangement shown in Figs. 1, 2, one plate 10 is supported on a fixed spring 12 but can be adjusted by means of the set screws 13, 14, while the other plate 15 is supported by means of a pin 17 on a telephone diaphragm 18. so that as the diaphragm vibrates variations of intensity are imposed on a beam of light passing through the gratings. In a modification (Fig. 6, not shown) both gratings are mounted on telephone diaphragms or the like. In the modification shown in Fig. 5, light 31 incident obliquely on a grating 40 is partly obstructed by the opaque lines 27. The rays which traverse the transparent intervals 28 pass through a liquid 26 such as nitro-benzene and fall upon a further grating 41. Electric or electromagnetic stress is applied to the liquid so as to vary its refractive index. The inclined part 32 of the light path is consequently varied, so that a variable fraction of the light passes through the second grating.
Patent GB-377862-A (GB)
Title: Improvements in or relating to the production of waterproof substances
IPC: C09D195/00
Filed: 1931-11-06
Abstract: A waterproof composition for walls, roofs, and road surface treatment and which may be moulded into blocks is composed of coal tar 5-85 per cent, indiarubber 1-25 per cent, and finely-divided granite dust 5-85 per cent.  The tar is boiled and the indiarubber in the form of small pieces is added slowly until dissolved, when the mixture is boiled 4-24 hours.  The granite dust is added and the mass boiled a further two hours, when it may be moulded into blocks for use in a cold state in the construction of floors, or applied hot by a brush to roofs &c., or applied hot between blocks of the same material for use in floors.  Several examples are given of preferred proportions for each of the purposes specified above.  In the Provisional Specification the composition includes other finely-divided mineral fillers, such as coke breeze, gravel, and cement.ALSO:A waterproof composition for walls, roofs, and road surface treatment, and which may be moulded into blocks is composed of coal tar 5-85 per cent, india rubber 1-25 per cent, and finely divided granite dust, 5-85 per cent.  The tar is boiled, and the india rubber in the form of small pieces is added slowly until dissolved, when the mixture is boiled 4-24 hours.  The granite dust is added and the mass boiled a further 2 hours when it may be moulded into blocks for use in a cold state in the construction of floors, or applied hot by a brush to roofs &c., or applied hot between blocks of the same material for use in floors. Several examples are given of preferred proportions for each of the purposes specified above.  In the Provisional Specification the composition includes other finely divided mineral fillers than granite dust, such as coke breeze, gravel and cement.
Patent GB-208159-A (GB)
Title: Improvements in the generation of steam
IPC: F22D1/10
Filed: 1923-03-24
Abstract: 208,159. Bell, J. E. July 1, 1922, [Convention date]. Feed-water, heating.-In a boiler fitted with an economizer through which, under normal conditions, all the gases from the boiler pass, means are provided for conducting part of the gases through a by-pass in the economizer when the boiler is worked under overload conditions. In an economizer placed above a water-tube boiler, a flue passage D<12>, Figs. 1, 2, between economizer tube banks D<1> is fitted with dampers E, which may be opened to allow part of the boiler gases to pass directly to the fan-casing H. The walls of the economizer casing are corrugated, and the outer walls are packed with heat-insulating material. Cast iron rings are shrunk on the economizer tubes. The tubes are arranged horizontally in staggered rows and are connected to junctionboxes D" and supported at their centre by a plate D<5>. The flue passage D<12> is divided by the plate D<5> and plates D<14> into four paths, each path being fitted with rows of dampers E, which are operated in horizontal pains by hand wheels E<6> on vertical bars connected to the damper spindles. In a modification, the gases pass from the inlet D", Fig. 6, of the economizer casing to the outlet D<33> through each of two banks of tubes in turn, part of the gases being allowed to pass directly to the outlet at high loads by opening dampers EA. Specification 200,060 is referred to.
Patent GB-850370-A (GB)
Title: Improvements relating to the bonding of cured conjugated diene-vinylpyridine compositions
Inventor: HALL ROBERT LEE
IPC: B32B27/00
Filed: 1956-10-09
Abstract: A cured conjugated diene-vinyl pyridine copolymer composition is bonded to a surface by coating the copolymer with an uncured conjugated diene-vinyl aromatic hydrocarbon copolymer, coating the other surface with an uncured conjugated diene-vinyl pyridine copolymer, bringing the coated surfaces together, and curing the uncured polymeric materials.  By this means a propellant grain may be attached to a metal surface in a rocket engine.  A typical grain composition contains a copolymer of butadiene and 2-methyl-5-vinyl pyridine, carbon black, dibutyl carbitol formal, dioctyl sodium sulphosuccinate, dodecyl mercaptan, zinc oxide, a mixture of a complex diarylamine ketone reaction product and N, N-diphenyl paraphenylenediamine, sulphur, ammonium nitrate, ammonium perchlorate, and Milori blue (as catalyst).  An example of a butadiene-methyl vinyl pyridine bonding agent contains also carbon black, zinc oxide, wood rosin, dibutyl phthalate, and tetrachloro-para-benzoquinone.  A butadiene-stryene bonding agent (which may also include divinyl benzene) contains also carbon black, sulphur, zinc oxide, stearic acid, phenylbeta-naphthylamine, amyl diphenyl, wood rosin, and dithiocarbamate accelerator.  Ammonium carbonate may be added to the bonding agent to make a sponge rubber composition.  Lists of conjugated dienes, vinyl pyridines, and vinyl aromatic hydrocarbons suitable for making the copolymers are given. Mounting of the grain in a rocket engine is described with reference to figures.  An external burning grain is prepared in two sections which are joined over iron support rods, an internal burning, or solid grain is bonded to the metal case, and an internalexternal burning grain is bonded at one end to the case and at the other end to a spider.