baber/WOPTO huggingface dataset:
Patent GB-777086-A (GB)
Title: Improvements in or relating to the production of phenylchlorosilanes
IPC: C07F7/16
Filed: 1955-03-17
Abstract: Phenylchlorosilanes are prepared by reacting chlorobenzene with silicon in the presence of a catalyst selected from copper, silver and the oxides and halides of these metals, or mixtures thereof, and a second catalyst which is zinc or a zinc halide or a mixture thereof.  The zinc, which inhibits decomposition of the phenyl radical and side reactions, constitutes preferably from 1 to 45 per cent of the total weight of silicon and catalysts.  The copper, silver, zinc and/or silicon may be used in an alloyed state.  The chlorobenzene may also contain a halide such as an alkyl chloride, tin chloride, hydrogen chloride or silicon tetrachloride, or a diluent such as hydrogen, an inert gas or an inert solvent.  The examples describe the preparation of mixtures containing mainly diphenyldichloro- and triphenylchlorosilane, the silicon being a commercial powder, e.g. containing iron, aluminium and traces of calcium and carbon, or a mixture of a powder and ferrosilicon containing 15 per cent iron; and the catalysts used being brass containing 16 per cent zinc, a mixture of reduced copper powder and zinc powder, which may also contain iron, a mixture of copper powder having an oxide coating, zinc powder and zinc chloride, a mixture of cuprous chloride, oxide-coated copper powder and zinc, and a mixture of silver powder, silver oxide and zinc powder.  Reaction is effected by passing the chlorobenzene through a heated tube containing the silicon and catalysts in powder or tablet form.  Temperatures of 400-480 DEG  C. are employed.
Patent GB-320310-A (GB)
Title: Improvements in and relating to atomisers, vaporisers, liquid fuel burners and the like
IPC: F23D11/10
Filed: 1929-03-11
Abstract: 320,310. Magowen, A. March 11, 1929. Addition to 313,696. Spray burners.-The inner tube or tubes of the atomizer, vaporizer, or liquid fuel burner of the parent Specification are protected against overheating so as to enable air of higher temperature than the boiling point of the liquid or fuel to be used without deposit accumulating on the tubes. In the construction shown the hot air is supplied through the flanged elbow 3 to pass through three concentric tubes 1, 10, 11 to the discharge nozzle 9 and oil fuel is supplied through adjustable pipes 14, 15 to the inner surfaces of the tubes 10, 11. Curved fins 12 are formed on the outer surface of the tube 10 to swirl the air current. Vanes such as 12a may also be provided in another tube to swirl the air in the opposite direction to the swirl produced by the fins 12, the oil supply to that tube being then cut off. The tube 11 is prevented from becoming overheated by being coated with asbestos or other non-conducting and non- combustible material 19 and being formed so as to enclose a hollow space 18 which may contain air and be sealed or may be partitioned and have air, water, or other fluid continuously circulated through it. When air is supplied to the space 18 it may be afterwards led through a valve-controlled pipe 23 to the outer tube 1, or discharge apertures 25, Fig. 5, may be provided in the tube 11 adjacent to the nozzle 9. A removable cap 7 carrying a transparent disc 8 is arranged on the elbow 3 to allow the observation and removal of solid matter.
Patent GB-1360521-A (GB)
Title: Photographic processes
IPC: G03F1/54
Filed: 1973-02-20
Abstract: 1360521 Photographic process IMPERIAL CHEMICAL INDUSTRIES Ltd 20 Feb 1973 [21 Feb 1972] 7961/72 Heading G2X A photographic process comprises (a) exposing, developing and bleaching a lightsensitive silver halide emulsion to give a positive silver halide image, and (b) exposing a second light-sensitive material (e.g. a diazotype material) through this silver halide image and processing to give an image on the second lightsensitive material.
Patent GB-334923-A (GB)
Title: Exhaust manifolds for aircraft engines
IPC: F01N13/06
Filed: 1929-03-12
Abstract: 334,923. Bellanca, G. M. March 12, 1929. Propelling. - The exhaust manifold 15 of a radial cylinder engine is arranged within a circumferential groove in the cowling adjacent to the cylinder heads which project through the cowling, the manifold being adjustable along the groove, to bring the outlet 18 into the required position. The manifold is shaped to offer little resistance to the air stream and is spaced from the base of the groove as shown in Fig. 2 to enable air to pass between the cowling and the manifold. The cylinder heads are connected to the manifold by pipes 16 provided with expansible sleeve connections 22. The manifold 15 is formed with a telescopic joint to allow for expansion and contraction with changes of temperature. To facilitate access to the engine, the groove in the cowling may be formed on a separate section or on a rear section from which the front section is detachable.
Patent GB-231504-A (GB)
Title: Improvements relating to controlling valves for fluid pressure apparatus
IPC: B60T15/36
Filed: 1925-03-25
Abstract: 231,504. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Duchatel, E. E. H.). March 26,1924, [Convention date]. Fluids, regulating volume of flow of. - A throttling-device applicable generally for regulating the flow of fluids comprises a number of superposed discs d, tapered towards their edges and having a slight clearance from a container a in which they are enclosed. These discs form a labyrinth which retards the release of fluid to outlets c from a passage b. By varying the number of the discs and their clearance from the container a, or by having a leakage groove in the lower part of the container and varying the number of discs located above it, as by means of a screwed rod passing through the base of the container, the rate of flow of the fluid may be regulated. In a modification, the discs are thickened at their outer edges and fit tightly in the container, each disc being centrally perforated to provide a small passage through it, the action of the device being regulated by varying the number of discs or the cross-section of the perforations.
Patent GB-357115-A (GB)
Title: Improvements in luminous tubes
IPC: H01J9/395
Filed: 1930-03-14
Abstract: 357,115. Discharge lamps. CLAUDE, G., 29, Rue de Sevres, Boulogne, France. March 14, 1930, No. 8294. Convention date, March 21, 1929. Void [Published under Sect. 91 of the Acts]. [Class 39 (i).] Alkali or alkaline-earth metals are introduced into a luminous discharge tube to reduce the voltalge drop at the cathode and to fix gaseous impurities by heating a compound of the metal such as the azide or hydride which liberates the metal and a gas, the latter being removed by a pump or other means. The heat may be supplied by the current passing through the tube or it may be applied externally of the tube or by any other means. The compounds may be placed in the tube in the solid state, or the electrodes may be impregnated with a solution thereof which may be mixed with sodium silicate.
Patent GB-126808-A (GB)
Title: Improvements in Electric Engraving Pencils.
IPC: B23H9/06
Filed: 1918-05-17
Abstract: 126,808. Robinson, A. M., and Electrical Instrument Co., R. I. May 17, 1918. Engraving.-An electric engraving-pencil for marking metal is provided with a marking-point of conducting material adapted to be connected to a main electric circuit which is controlled by an auxiliary circuit through the operation of a switch on the pencil so that the main circuit may be broken when the pencil is raised from the work to prevent pitting of the work by arcing. In one form, Fig. 1, a handle 10, preferably of insulating material, is provided with a metal end piece 11 in which is clamped one end of a conducting core 13, the other end of which is connected to a circuit wire 18 by a clamping-shoe 20 and screw 17. The end 14 of the core 13 forms the marking point. The wires 25, 26 of an auxiliary circuit are secured to a switch comprising binding posts 21, 22 and a spring contact plate 23 provided with a press button 24 for closing the switch when desired. The auxiliary circuit comprises a battery 27, Fig. 4, and electro-magnets 28, the armature 29 of which controls a switch 30, 31 in the main circuit which is connected at one end to the pencil and at the other end to a conducting support 34 carrying the work 35. The work is engraved by writing upon it with the point 14 and before raising the pencil from the work, the switch 23 is closed, thereby breaking the switch 30, 31. In the form shown in Fig. 3, the auxiliary circuit is automatically closed when the pencil is raised from the work. The metal end piece 45 carrying the marking point 48 is connected to the handle 10 by a pivot 46 to which the core 13 is secured and the switch contact plate 51 is carried by the end piece 45 which, when lifted from the work, is tilted by a spring 49 to close the auxiliary circuit.
Patent GB-842139-A (GB)
Title: Improvements in or relating to the separation of hydrocarbons using molecular sieves
Filed: 1959-03-11
Abstract: In the separation of hydrocarbons by selective adsorption of one component on a molecular sieve, the adsorption step is stopped before the normal time for break-through of the adsorbed hydrocarbons, desorbate is passed through the adsorbent at adsorption temperature while still collecting an effluent free of adsorbed hydrocarbons and desorption is then effected by heating the sieve and reducing the pressure.  Preferably the sieve is heated for desorption by a heated stream of desorbate and desorbate is then recovered by evacuation. The feed is preferably dried with a 4  molecular sieve or silica gel and then passed in the vapour phase through the adsorbent at 200-500 DEG F. and 0-50 p.s.i.g. at a rate of 0,2-2 w/w/hr.  The flow of feed is cut short by an amount equal to the quantity of feed, found by experience to be loosely held by the molecular sieve and the amount of desorbate passed under adsorption conditions is equal to the amount the feed is cut short.  The sieve is then heated to 500-1000 DEG F. by desorbate pumped round a closed circuit including the sieve through which it passes downwards and a heater. Desorbate is recovered by reducing the pressure to 150 mm. and the sieve cooled, e.g. by passing unadsorbed feed effluent through, or another cooling medium such as hydrogen methane or other light hydrocarbon. Preferably four beds of sieve are used simultaneously on the four operations-adsorption, heating, evacuating, cooling.  Heat from the zone on cooling may be recovered from the effluent in heat exchangers to heat the desorbate used for the heating step, or to heat incoming feed.  A 5  sieve may be used to separate normal paraffins from other hydrocarbons or a 13  sieve to separate aromatics.
Patent GB-313942-A (GB)
Title: Improvements relating to locking and interlocking mechanisms primarily for use with electric switches
IPC: H01H9/20
Filed: 1928-03-20
Abstract: 313,942. British Thomson-Houston Co., Ltd., Wood, C. W., and Clifford, E. March 20, 1928. Levers, locking.-A device, such as an electric switch, is moved between its extreme positions by several revolutions of a handle 13, and keys are used to release the handle, but are trapped in the locks except when the device is at one or other of its extreme positions. One or more keys 14 are inserted in the locks and the latches 15 raised, whereupon a lid 17 can be swung to the position 17<1>. In this position, a cam 23 raises a locking member 24 which maintains the latches raised and the keys trapped. The handle 13 can now be rotated, whereupon a nut 11 with a claw-shaped lower end traverses the screwed shaft 10 and with the claw engages a flange, 20 on the lid. Thus, only when the nut 11 is in its extreme positions can the lid 17 be returned to its initial position and the keys be released. A modification is described in which a cam plate driven through worm gearing is used to trap two keys. The keys may also be used to unlock other switchgear or inspection covers. Specification 235,319, [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-374947-A (GB)
Title: Improvements relating to cylinder heads of internal combustion engines
IPC: F02F1/38
Filed: 1931-03-19
Abstract: 374,947. Cylinders. WITTENBERG, O., 42, Danyanich u., and HARSANYI, J., 78, Vilmos csaszar ut, both in Budapest. March 19, 1931, No. 8470. Convention date, March 26, 1930. [Classes 7 (ii) and 7 (vi).] A combustion chamber is formed by an extension of the cylinder bore and a sloping roof containing the valves 7, 4, which preferably function as exhaust and inlet respectively. The detachable head joint may be in, and the valve 4 normal to, the plane of the roof which is inclined at between 45‹ and 60‹ to the cylinder axis ; the valve 4 may, however, be less inclined to the axis and the piston may have a baffle, so that the clearance space is, substantially, limited to the exhaust side in which one or more sparking plugs 9 are arranged. Valve gear.-The valves may be operated by a common shaft 16, by separate overhead shafts, or by a common shaft in the crank-case.
Patent GB-722283-A (GB)
Title: Improvements in and relating to traversing yarn guides for textile machines
IPC: B65H57/04
Filed: 1952-04-03
Abstract: 722,283. Yarn traversing guides. SCRAGG & SONS, Ltd., E., and SCRAGG, E. R. March 31, 1953 [April 3, 1952], No. 8487/52. Class 120 (2). A winding machine, and more especially an uptwister, is provided with a yarn traverse guide, preferably formed from wire; having a slot 6 which never supports the yarn from below, and an arm 7 which guides the yarn 8 into the slot 6 whilst ensuring that the encounter between slot 6 and yarn 8 is always lateral with respect to the slot.
Patent GB-1213261-A (GB)
Title: Aziridinyl silanes and compositions thereof
IPC: C07F7/18
Filed: 1969-02-17
Abstract: 1,213,261. Coating glass. GENERAL TIRE & RUBBER CO. 17 Feb., 1969 [19 Feb., 1968], No. 8535/69. Heading B2E. [Also in Division C3] Epoxide and carboxyl-containing polymers are bonded to glass or glass fibres by first treating the latter with an aziridinyl silane of the formula:- wherein R represents hydrogen or C 1-6  alkyl, R<SP>1</SP> represents an alkyl, alkoxy, alkylthio, cycloalkyl, cycloalkoxy or cycloalkylthio group of from 1 to 6 carbon atoms, each R and each R<SP>1</SP> may be same or different, X represents O, S or -N(R)-, A represents a hydrocarbon chain optionally interrupted by ether, thioether, ester or -N(R)- linkages or optionally containing alkoxy, alkylthio or acetal side groups and having a total of 2 to 20 carbon atoms inclusive of side groups and interrupting groups, both X and the aziridine nitrogen atom being attached to a carbon atom of A, and m is an integer of from 1 to 4, and subsequently reacting the said polymers with the aziridinyl group of the attached silane.
Patent GB-611212-A (GB)
Title: Light alloy
IPC: C22C21/00
Filed: 1945-04-06
Abstract: A light antifriction alloy consists of 2 to 12 per cent Mg, 0.6 to 4 per cent Pb and Sn together, the lead being at least 0.5 per cent, the balance being aluminium.  A part of the Sn and Pb may be replaced by an equal amount of Bi, the Pb and Sn together being at least 0.6 per cent.  The alloy may also contain one or more of the metals Cu, Ni, V, Zr, Cr, Mn and Ti, up to 1 per cent for each, but with a total not exceeding 4 per cent.  The alloys may be used in the cast or worked condition and may be the rubbing layer, a support to form a bearing, or form a one-part rubbing element.  According to the Specification as open to inspection under Sect. 91, the alloy may contain no Sn.  Further, all or part of the Pb may be replaced not only by Bi, but by Sn, or Sb or a mixture of Sn, Bi and Sb.  This subject-matter does not appear in the Specification as accepted.
Patent GB-302529-A (GB)
Title: Improvements in or relating to apparatus for heating rods, tubes and the like by electricity
IPC: H05B6/02
Filed: 1928-03-21
Abstract: 302,529. Northrup, E. F. March 21, 1928. Heating by electricity.-In induction heating apparatus wherein. the rods, tubes, or the like to be heated are inserted into or passed through coils spaced apart, one or more of the coils in the later portion of the path of the rods is energized by currents of higher frequency than that applied to the other coils. Eddy currents are induced in the rods themselves or in conducting casings surrounding them. In Fig. 1 the coils B<1>, B<2> are connected in series with the generator G, and the coil B<3> is connected up in a circuit employing a spark gap D and condensers C', C<2> so as to operate at a higher frequency. In a modification the voltage of the higher-frequency circuit is raised by a transformer. In a further modification the coil B<3> is fed by a separate generator of higher frequency than the generator G. In Fig. 3 all the coils are in series and a higher frequency is imposed on the coil B<3>. In the three-phase arrangement of Fig. 4, coils H, I, K are connected directly to the supply, and coils H', I<1>, K<1> are fed by a higher frequency, and preferably higher voltage, generator G<1> driven by a synchronous motor Sm connected to the supply. A similar arrangement may be employed for two-phase working.
Patent GB-264366-A (GB)
Title: An improved bomb or grenade adapted for use with fire-arms
IPC: F42C15/20
Filed: 1926-03-30
Abstract: 264,366. Soc. Italiana E. Breda, and Scaglia, G. March 30, 1926. Projectiles; fuzes.-A percussion fuze of known kind is combined with a safety device of known kind in a grenade adapted to be discharged by means of a bullet passing therethrough. The percussion fuze comprises two members 7, 8 separated by a spring 11 and arranged between concave seats in a socket 4 and its cover 9. One member carries a firing pin 20 and the other member a percussion cap 17; and on impact in any direction, the percussion cap is struck by the firing pin, and the flash is communicated to a detonator 5 for the bursting charge 18. The safety device comprises a fork 10, which prevents movement of the percussion members and is held in place by a wire 15 stretched across an axial hole 2 through tho grenade and fastened to a stud 16. When the grenade is discharged by a bullet shot through the hole 2, the wire 15 is cut by the bullet, and the fork 10 falls off, leaving the percussion members free to act on impact. The chamber containing the detonator 5 is closed by a screw plug 6; and the filling-hole for the bursting charge 18 is closed by a screw plug 3.
Patent GB-1494067-A (GB)
Title: Joined reeled strips of tobacco leaf
IPC: A24C1/04
Filed: 1976-03-04
Abstract: 1494067 Joining strips of tobacco. VAN DER MOLEN MACHINEFABRIEK BV 4 March 1976 [10 March 1975] 871/76 Heading A2C Tobacco strips for cigars are prepared for lapping, laid on a carrier tape, and sealed. storage by being joined with their ends over- The strips are joined by being placed on a conveyor 4, conveyed past a length sensing device 10, 10A transferred to the carrier tape 13 moving intermittently in accordance with the sensed length so as to receive the strips with their ends overlapping and applying adhesive to the ovelapping ends. The carrier tape and joined tobacco strips are then wound into a reel 14. In the embodiment shown the tobacco strips are transferred from the conveyor 4 to the carrier tape by an intermediate conveyor. In a second embodiment (Fig. 5 not shown) this function is performed by a piston rod having a fork at its free end.
Patent GB-1224511-A (GB)
Title: Improvements in data printing apparatus
Inventor: WYATT FREDERICK THOMAS JOHN
IPC: G06K15/14
Filed: 1968-02-22
Abstract: 1,224,511. Typewriters etc.; selective printing keyboards for printers. CREED & CO. Ltd. 19 Feb., 1969 [22, Feb., 1968], No. 8747/68. Heading B6F. [Also in Divisions G4-G6] In a printing machine of the kind in which each character is initially built up in mosaic form on a recording surface by successive energization of appropriate ones of a column of recording heads during lateral movement of the surface, the recording surface 11 is cylindrical and successive lines of characters are each recorded circumferentially. A column 6-71 of recording heads is provided for each line of text. As described there are 65 columns, the columns being selected in turn by a switching system 4 controlled by a counter 32. The counter is stopped by an endof-line code which is detected by circuit 30. The incoming characters are applied in turn to a converter 2 to be formed each into a succession of ten combinations on the leads. The cylinder 12 is rotated by motor 13 through clutch 14. At the end of the first line which is recorded by the recording heads 6 the synchronizing unit 15 stops the drum by disengaging clutch 14. The end-of-line code then causes counter 32 to step (to select the next group of heads 7) and applies a signal to synchronizing unit 15 which causes clutch 14 to restart the drum 12 and the next line is recorded. When all the lines have been recorded, an end-of-message code causes detector 20 to operate a dust applicator 22 to apply dust to the surface 11; to operate a recording head 40 to record an end-of-message mark on the surface and to operate synchronizing unit 15 to restart the drum. After the first revolution the mark on the drum is sensed by reading head 41 and a pulse sent to a counter, which, in the " 1 " position causes a roller to press a paper sheet against the surface 11. When the end-of-message mark is sensed for the second time, the sheet is released and falls away from the drum. When the mark is sensed for the third time the counter reverts to " 0 " and causes synchronizing unit to stop the drum. The characters are recorded in mirror image and in reverse order on surface 11 so that when offset on to the paper sheet they appear in legible form.
Patent GB-553669-A (GB)
Title: Improvements in or relating to the impregnating of woven hose pipes and the like with indiarubber latex or with solutions of indiarubber or other similar plastic materials
IPC: B29D23/00
Filed: 1941-07-11
Abstract: 553,669. Proofing hose and other pipes. ZABALA, F. S. July 11, 1941, No. 8805. Convention date, Nov. 12, 1940. [Class 140] In a process for impregnating hose and other pipes woven from fibrous material, one end of the pipe is supported at a higher level than the other, the interior of the pipe is filled with indiarubber latex or a solution of indiarubber or other similar plastic material, the ends of the pipe are closed or provided with cocks, and a light pressure is exerted on the latex at the upper end of the pipe by air or gas or by compressing the same between two rollers starting from the upper end, the process being continued until the liquid has passed through the walls of the pipe. The pipe may then be dried and vulcanized by passing through it a current of heated air or steam. This current may carry with it talcum powder. If desired the pipe may have a coat of paint.
Patent GB-1142284-A (GB)
Title: Improvements in or relating to drainage plugs for bathtubs
Inventor: LUNDQUIST BENGT OLOF
IPC: A47K1/14
Filed: 1967-02-24
Abstract: 1,142,284. Drainage plug for bath-tub. GUSTAVSBERGS FABRIKER A.B. 24 Feb., 1967, No. 8825/67. Heading A4N. A drainage plug 10 adapted to fit a seating 6 in a bath-tub outlet has projecting from its underneath a tongue-shaped suspension member 11 provided with a narrow end piece 12 and at the junction of the wider portion therewith curved indentations 13 by which the plug can be supported in a raised position on a support 14 whereby when pivoted on said support the suspension member 11 slips off the support allowing the plug to fall into the plug seat 6 and seal the bath-tub outlet; the end portion 12 of the suspension member is provided with stops 15, e.g. round headed rivets which prevent the plug from becoming completely withdrawn from the drain outlet. As shown, the support 14 is constituted by a slot defining a flange-way forming an integral part of the plug seat 6, one of the indentations 13 engaging a flange of the support 14 to retain the plug in the raised position. The plug seat 6 is secured in the outlet opening of the bathtub by being screwed into a flanged body portion 1 below the outlet and having a discharge portion 2 connected to drain pipe 3.