baber/WOPTO huggingface dataset:
Patent GB-268217-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D1/02
Filed: 1926-09-07
Abstract: 268,217. Dawe, W. R. Sept. 7, 1926, Circular - flow t y p e ; reversing; leakage - preventing devices; condensation water, collecting and draining.- In a turbine in which the stator and rotor are formed with peripheral pockets 5, 10 adapted in certain positions of the rotor to form a sinuous channel extending from the inlet to a point adjacent the exhaust outlet 7, the pockets are formed with axially extending bridge pieces 6, 11 which periodically interrupt communication between the stator and rotor pockets. Between the rotor pockets are situated spring- pressed T-section packing pieces 13 with a division at 14, Fig. 4. Condensate is drained from a pocket 8 in the stator. A number of rotor elements may be arranged on a common shaft.
Patent GB-931660-A (GB)
Title: Improvements in and relating to high speed apparatus for stretching or upsetting metal sheet
IPC: B21D11/08
Filed: 1961-06-19
Abstract: 931,660. Stretching; upsetting. W. ECKOLD. June 19, 1961 [June 18, 1960], No. 22083/61. Class 83 (4). A machine for highspeed stretching or upsetting of hand - controlled metal sheets comprises trim-operated deforming tools that act on opposite sides of sheets positioned between them, wherein at least one of the tool heads 2 of the tools is separated from the adjacent end of the supporting ram 1 on which it is mounted by a member 3 detachably fastened either to the tool-head or to that supporting ram, which member has an arched supporting surface in a flush fit with an inversely arched supporting surface on whichever of the tool head and the supporting ram therefor to which the member is not so fastened, and the mounting of the tool head on the said supporting ram is such as to permit movement of the tool head with respect to the supporting ram in such manner that the said flush surfaces slide with respect to one another so as to achieve a complete surface application of the said tool on a sheet positioned between the tools in the case of eccentric pressure transmission. The member 3 which is made of a synthetic resin material is detachably secured to the tool head 2 by a screw 4 and pins 5 prevent twisting. The movement of the jaws 6 towards one another during the deforming action of the tool is effected by obliquely aligned blades or rollers positioned at 7. Rotary movement of the tool head is limited by rubber pads 8 press-fitted in recesses in the arched surface portions of the member 3 and the ram head 1.
Patent GB-652811-A (GB)
Title: Improvements in the production of cellulose
IPC: D21C3/26
Filed: 1948-08-23
Abstract: Cellulose is produced by treating wood in particle form at a temperature of at least 150 DEG  C. with a 50-70 per cent aqueous solution of a fatty acid containing up to 4 carbon atoms in the molecule, draining or otherwise removing the acid from the wood, and treating the wood at a temperature of at least 150 DEG  C. with a 30-40 per cent aqueous solution of a fatty acid containing up to 4 carbon atoms in the molecule.  Acetic acid, propionic acid or butyric acid, or mixtures of such acids may be used, and 0.5-1 per cent of phosphoric acid is preferably added.  The amount of aqueous acid used in each treatment is preferably 6-8 times the original dry weight of the wood.  The cellulose obtained, washed free from acid, may be further purified by treating with alkali solutions or chlorinating or hypochlorite bleaching solutions; it may then be used in the manufacture of cellulose esters and ethers, or for the production of regenerated cellulose by the viscose and cuprammonium processes.  In an example, birch chips are heated to 160 DEG  C. with 70 per cent aqueous acetic acid.  The acid was changed twice at five-minute intervals, drained from the wood, and replaced by 30 per cent aqueous acetic acid heated to 160 DEG  C.  This acid was changed three times at five-minute intervals and the pulp then washed with water. Specifications 416,416, [Group VIII], and 421,379 are referred to. The Specification as open to inspection under Sect. 91 describes a process in which the concentration of the acid in the first stage of treating the wood is above 50 per cent and in the subsequent stage or stages is less than or equal to 50 per cent.  An additional example is given.  This subject-matter does not appear in the Specification as accepted.
Patent GB-843889-A (GB)
Title: Improvements relating to magnetic separators
IPC: B03C1/14
Filed: 1958-07-10
Abstract: 843,889. Magnetic separators. SPODIG, H. July 10, 1958 [July 10, 1957], No. 22200/58. Class 117 A magnetic separator comprises a housing 3 pivotally mounted in an inclined position on a stand 1 and containing permanent magnets 4 arranged with like poles uppermost, a rotatable pole plate 5 consisting of a series of radial sections of magnetic and non-magnetic material, arranged alternately, overlying the magnets 4 and driven by a motor 2, and a fixed plate 6 which lies above the pole plate 5 to form together with the housing 3 part of the magnetic yoke and which is connected to a cover plate 9, the distance between plates 5 and 6 being adjustable by means of hand-wheels. Material to be separated is directed on to the pole plate 5 through an opening 10 in the plates 6 and 9, non-magnetic material leaving through a shoot 11 and magnetic material through a shoot 12. The magnets 4 and the plate 6 extend over half the area of the pole plate 5. Alternatively, magnets may be provided over the whole area of the plate 5, in which case the plate may be made entirely of magnetic material; a wiper 13 is then necessary to remove magnetic particles trapped by the plate. The separator may be used for granular or powdered solid, pasty, liquid and gaseous materials
Patent GB-1418278-A (GB)
Title: Integrated circuit devices
IPC: H01L29/49
Filed: 1974-05-17
Abstract: 1418278 Sputter etching INTERNATIONAL BUSINESS MACHINES CORP 17 May 1974 [29 June 1973] 22230/74 Addition to 1361214 Heading C7F In the manufacture of an integrated circuit device, a Si substrate is formed with a layer of SiO 2  or Si 3  N 4 , 11, and metal strips 20, 22 to which is applied a sputtered coating of SiO 2 , 23. After deposition, or during deposition (see Figs. 2A<SP>1</SP>- 2C<SP>1</SP>), the layer 23 is sputter-etched" until the raised portion 24 above the narrow strip 20 is removed to the overall level of the layer, whilst leaving raised portion 25 above the wider strip 22. A via hole is formed in layer 23 down to the strip 20 by using HF and a photo-resit 26, in which via hole a metal strip 30 is deposited. Finally, an overlayer of SiO 2  or Si 3 N 4  may be applied. The metal of strips 20, 22, 30 is selected from Al, Al-Cu, Pt, Pd, Cr, and Mo. The process may be used to selectively level the coating above a narrowed portion of a wide strip Figs.3 and 4; (not shown).
Patent GB-257411-A (GB)
Title: Improved flint lighter
IPC: F23Q2/06
Filed: 1925-09-07
Abstract: 257,411. Cook, C. H., and Bartle, J. R. Sept. 7, 1925. Fuel reservoirs.-The filling opening 38 of the fuel container 1 of a pocket igniter is closed by a screw-plug 39 having a milled head 40, which is of a diameter substantially equal to the width of the base 4 and its in a cut-away portion of the latter so that it can be readily manipulated by the fingers.
Patent GB-318361-A (GB)
Title: Improvements in or relating to the manufacture of insulated electric conductors
IPC: H01B7/282
Filed: 1928-08-01
Abstract: 318,361. Greenwich Cable Works, Ltd., and Brooking, J. H. C. Aug. 1, 1928. Drawings to Specification. Armouring cables.-The lead sheathing of an electric cable is covered with material known under the registered Trade Mark " Pernax. " Specification 24590/01, [Class 70, India-rubber &c.] is referred to.
Patent GB-820075-A (GB)
Title: Improvements in and relating to photo-electric cells
Inventor: JENKINS JAMES ARCHIBALD
IPC: H01L21/00
Filed: 1951-09-24
Abstract: 820,075. Photo cells. MULLARD RADIO VALVE CO. Ltd. July 25, 1952 [Sept. 24, 1951], No. 22323/51. Class 37. [Also in Group XV] During the manufacture of a photo-electric cell a substance or substances are introduced into the cell which, on heating in vacuo, provide lead sulphide, lead selenide or lead telluride. The substances (e.g. lead monoxide and sulphur) are in substantially stiochiometric ratio. By repeated cooling of the external face of a Dewar flask forming the cell and in which the reaction is proceeding, the sulphide sublimes on the inner surface, from which it is later transferred to the re-entrant face, as described in Specification 820,077.
Patent GB-1466217-A (GB)
Title: Electrical induction furnace
IPC: F27D1/16
Filed: 1975-05-22
Abstract: 1466217 Liquid level detector AEGELOTHERM GmbH 22 May 1975 [31 May 1974] 22364/75 Heading G1N An electrical induction furnace for heating liquid electrically conducting materials comprises a crucible 1 surrounded in the region of the melt 3 by a plurality of turns of an induction heating coil 2 connected to a source of A.C. 4 and a liquid level sensing device including indicating means responsive to a change in electrical potential between turns of the induction coil. Thus a pair of adjacent turns is connected across the primary of a transformer 20 via e.g. taps 2<SP>1</SP>, 2<SP>11</SP>, the transformer secondary winding connecting via rectifier 21 to resistor 22. A direct current proportional to the alternating current in the coil 2 is obtained by current transformer 14, and rectifier 15, producing a corresponding voltage across resistor 16. The voltages across resistors 16, 22 are compared in a circuit containing resistors 23, 24, If they are unequal, the difference voltage at the output of amplifier 26 causes an indication from luminous diode e.g. 27, which indicates a change in coil impedence due to melt entering the space between the respective pair of turns.
Patent GB-460921-A (GB)
Title: Variable pitch propellers
IPC: B64C11/34
Filed: 1935-08-08
Abstract: 460,921. Screw propellers. SCHWARZ, GES., G. Aug. 8, 1935, Nos. 22440 and 22441. Convention dates, Aug. 8, 1934 and Aug. 17, 1934. [Class 114] The blades of a screw propeller are adjustable in pitch in response to the temperature of the surrounding air. The blade 2 has an arm 4 which carries a weight 16 adapted under centrifugal force to tend to alter the pitch of the blade. This arm 4 is connected with an arm 3 on the hub by means of a thermic control device 5. This latter consists of a cylinder 9 filled with liquid and containing piston 10 which is under spring restraint and has an extension in a smaller cylinder 12 communicating with a larger one by passages 14. Changes in the expansion of the liquid within the cylinder due to changes of temperature result in relative movement of the piston 10 in the cylinder 9 and thereby changes the position of the blade. The piston passes through a stopper 13 of elastic material. The thermic control device may be used as at 35 as an adjustable stop limiting the end position of the pitch movement. In this case the device is mounted on an arm 33 on the hub and carries the projection 30 adapted to contact with a projection on the blade. The control may be single acting in which case the other limiting position 39 is fixed, or there may be a thermic control for both end positions. A superposed control is effected by disposing the thermic device 55 adjacent to tubes 57 which can be supplied with heated gases under valve control 48 from the exhaust pipe of the driving motor. In addition another pipe 67 receives cold air under valve control 62 from an inlet 60, open to the atmosphere which is used for passing colder air on to the device when rapid cooling is required. Specification 441,050 is referred to.
Patent GB-533950-A (GB)
Title: Improvements in or relating to apparatus for firing by liquid fuel
IPC: F23D11/10
Filed: 1939-07-24
Abstract: 533,950. Liquid fuel burner apparatus. BABCOCK & WILCOX, Ltd., and RICHARDSON. A. R. W. July 24, 1939, No. 22529/38. [Class 75 (i)] A liquid fuel burner comprising a whirling discharge chamber to which fuel and steam, air. or other gaseous fluid are fed through ducts so inclined as to cause the fuel and steam to whirl in the same direction is fitted with a non-return valve in the steam supply passage so that while the steam is maintained at a constant pressure of, say, 20 to 25 lb. per sq. inch the fuel pressure may be varied from 5 lb. to 200 lb. per sq. inch without fuel entering the steam supply pipe. At low pressure the fuel is atomized by the steam and higher pressures mechanically. Fig. 1 shows a burner such as is described in Specification 512,919 having the steam inlet 19 of the burner coupling 18 fitted with a non-return valve 27 screwed to a tube 30 connected by arms to a sliding member 31 which is formed with a radial flange 32 to limit its upward displacement. Fig. 5 shows a burner 109 supplied with fuel from a tank 101 by a positive displacement pump 106 driven by a constant-speed electric motor and with steam by a pipe 113 fitted with stop, reducing, and shut-off valves 114, 115, 116. The fuel may be pre-heated in the tank 101 by steam supplied through a pipe 121 and may be passed through a filter 105 and heater 108. The pump 106 supplies fuel at the maximum burner consumption rate and regulation of the burner is effected by means of a valve 112 arranged in a return pipe leading from the burner to the supply tank. Air at low pressure may be substituted for the steam supply.
Patent GB-1274221-A (GB)
Title: Vehicles for travelling upon water and soft ground
Inventor: HATT WILLIAM JACK
IPC: B62D55/07
Filed: 1968-05-13
Abstract: 1,274,221. Amphibious vehicles. W. J. HATT. 11 Aug., 1969 [13 May, 1968], No. 22613/68. Headings B7A and B7V. A vehicle for travelling upon water and soft or marshy ground comprises a buoyant hull 1 having a tunnel extending longitudinally therein an endless cleated track drive 5 mounted within the tunnel and having a drive flight below the bottom of the hull and a return flight above the load waterline level of the hull, and twin rudders 12 each of which can be brought into and out of engagement with the ground upon which the vehicle is travelling. In the embodiment shown the hull comprises twin pontoons 3 supporting a superstructure 2 and the rudders are each mounted for independent rotation about horizontal axis 13. Skids 10 are mounted on the undersides of the pontoons.
Patent GB-358625-A (GB)
Title: Improvements relating to multiple conductor electric cable joints
IPC: H02G15/103
Filed: 1930-07-26
Abstract: 358,625. Cable joints. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Ohio Brass Co. ; Mansfield, Ohio, U.S.A.) July 26, 1930, No. 22614. [Class 38 (i).] The joints 15, 16 between the cores of multicore cables 11 are enclosed in a block 14 of solid dielectric material, e.g. porcelain, having divergent passages for the cores at each end of the block. Each of the passages may pass through a protuberance on the end of the block and the outer surface of the block may be metallized and connected to the metal covering B of the cores as by spring clips 23. Annular chambers 17 around the joints, with metallized surfaces connected by springs 24 to the joints 15, 16 prevent leakage along the surface of the cable insulation 12. A casing 18 made in two parts bolted together is clamped to the metal sheath of the cables. In a modification, Fig. 4, the block is built up in sections, the divergent passages being formed in a coned end section 31 having a metallized coating 41, and the joint 29, 30 being enclosed in interfitting blocks 33.
Patent GB-618069-A (GB)
Title: Improvements relating to welding rods
IPC: B23K35/30
Filed: 1946-07-30
Abstract: A method of producing a nickel-chromium cast-iron welding rod, of a kind suitable for producing hard overlays, containing 2.0-4.0 per cent of carbon, 0.25-2.0 per cent of silicon, 2.0-7.0 per cent of nickel, 0.25-3.0 per cent of chromium, 0.1-1.5 per cent of manganese, less than 0.2 per cent of sulphur and less than 0.3 per cent of phosphorous in which the iron, before being cast is superheated to a temperature between 2850 DEG F. and 3000 DEG F. and thereafter 0.05-1.0 per cent calcium is introduced into the melt, e.g. as a calcium-silicon alloy.  The alloy is preferably cooled from the superheat temperature to a temperature not less than 2600 DEG F. before the calcium is introduced and the melt is then preferably further cooled before being cast in a chill mould or in sand. Specification 531,380 is referred to.
Patent GB-758069-A (GB)
Title: Improvements in or relating to ignition systems
IPC: H03K3/537
Filed: 1954-08-05
Abstract: 758,069. Ignition systems. SOC ANON DE MACHINES ELECTROSTATIQUES. Aug. 5, 1954 [Aug. 5, 1953], No. 22777/54. Class 7(4) In an ignition system wherein the ignition is brought about by a H.V. capacitative discharge, the H.V. is proudced by a voltage multiplier 3 of the " Marx type for example comprising a group of capacitors C 1 -C n  charged in parallel by a unidirectional energy source, such as a generator 2, having a voltage which is many times smaller, than that of the discharge; the capacitors then being discharged in series to energize the sparking plugs 5. A L.T. source, such as a battery 1, supplies the generator 2, which may be replaced by a commutator machine, electrostatic generator or a vibrator, that is connected to the voltage multiplier 3; the latter has n stages and comprises resistors R 0 , R 1 ...R n -1 and R<SP>1</SP> 1  ... R<SP>1</SP> n-1  the capacitors C 1 ...C n  and spark gaps E 1 ...E n-1 , the gap E 1  including an ionizing electrode not shown connected to the coil secondary winding 6b. The H.V. generated in the secondary winding 6b triggers the discharge of the multiplier through one or other of the connections X or Y, the latter incorporating a spark gap 7. The coil primary winding is connected by a resistance 8 to a conventional contact breaker 4j, 4k controlled by a centrifugal advance mechanism with a vacuum correcting device, not shown; the resistance may be dispensed with by using a 12V coil with a 6V battery. The last multiplier stage is connected to the rotor 4b of a conventional distributer, the rotor being on the same shaft 4h as the contact breaker. In a modification the ignition coil is dispensed with and the contact breaker is replaced by a contact arm on the distributer shaft which rotates inside a stationary ring carrying fixed studs connected to the second stage of the multiplier and which arm and studs constitute a spark gap replacing the first spark gap E 1 . Several contact arms forming the spark gaps of some of the lower voltage stages may be used to replace the fixed gaps thereof. In another modification, the contact breaker takes the place of the generator and the ignition coil which is preferably replaced by a transformer that charges a storage capacitor via a rectifier, which capacitor discharges through a resistor or inductor into one or other of the triggering connections.
Patent GB-424495-A (GB)
Title: Improvements in and relating to the manufacture of carbon papers
IPC: B41M5/10
Filed: 1933-08-15
Abstract: Solid colouring-compositions are prepared by thickening non-drying vegetable or mineral oils and mixing with dyes before solidification occurs.  The oils may be thickened by oxidation and polymerization by heating in an autoclave in the presence of a catalyst, by vulcanization with sulphur or a sulphur compound, by hydrogenation, by the formation of oleates with the oleic acid in the vegetable oils, or by dissolving oleates or resinates therein. The colouring-compositions are used in the preparation of carbon papers.
Patent GB-806600-A (GB)
Title: Improved stretcher
IPC: A61G1/052
Filed: 1955-08-09
Abstract: 806,600. Stretchers. CREAN, G. P. Aug. 3, 1956 [Aug. 9, 1955], No. 22883/55. Class 108 (1) A laced fabric stretcher which is foldable about normally shrouded hinges each in the near middle of a longitudinal 11, Fig. 2 (not shown), is provded with width adjusting telescopic laterals 12 which may be pivoted about brackets 11d to lie parallel with the members 11 and collapse the stretcher when pins 13 are removed, and comprises pin held telescopic handles 15 which may be removed from the members 11 and fitted over stub feet 11f to raise the height of the stretcher.
Patent GB-372193-A (GB)
Title: Improvements in margin stops for typewriters
IPC: B41J29/50
Filed: 1931-08-14
Abstract: 372,193. Typewriters. OLIVETTI, C. and OLIVETTI & CO., ING C., Ivrea, Italy. Aug. 14, 1931, No. 23000. [Class 100 (iv).] Margin, stops.-In arrangements for adjusting the stops by moving the carriage the stops are provided with a spring knob which cooperates with the stop-rack to ensure that the teeth on the stops engage with the teeth on the rack, and to provide a braking effect sufficient to prevent accidental movement of the stops during adjustment. The stops 1, 2 slide on bars 3, 4 mounted on the carriage and have teeth 10, 101 for engaging with teeth 11 of the rack. The stops can be rotated about the bar 3 by means of a lever 9 so as to disengage the teeth 10, 10<1> and in this position hooked levers 12, 12<1> on the stops come into a position to engage a stationary abutment 20. Thus by pressing the lever 9 moving the carriage, one or other of the levers 12, 12<1> will engage the abutment 20, and on further movement of the carriage the corresponding stop will move along the bars 3, 4 to be locked in a new position when lever 9 is released. To ensure engagement of the teeth 10, 10<1> with the rack, spring arms 16, 161 are mounted on the stops and carry knobs 17, which co-operate with the rack 11 and move from gap to gap as the stop traverses. The braking effect of the springs 16, 16<1> also prevents one stop moving while the other is being adjusted to give sufficient resistance to ensure the engagement of the levers 12, 12<1> with the abutment 20.
Patent GB-1341758-A (GB)
Title: Web handling apparatus
IPC: G03B21/43
Filed: 1971-04-19
Abstract: 1341758 Cinematography EASTMAN KODAK CO 19 April 1971 [4 March 1970] 23075/71 Heading G2E In a web handling apparatus, e.g. a cine projection, in which a web (film F) passes from a supply to take-up store (reels 22, 24) a drive member (film claw 36) located at a station (picture gate 30) is able to drive the web F in forward and reverse directions. On either side of the station are capstans 32, 34 each having driven rotatable members which tend to simultaneously drive the web F towards the station 30 and member 36 at a speed faster than that of the member's web advancing rate. As shown in Fig. 2 each capstan may have a rotatable member 42 having opposed frusto-conical surfaces 46, 48. Variation of the angle X varies the torque applied by the member 42. A large value of X gives less torque than a small value. The members 42 are designed to provide a constant web tension ratio between the web lengths extending from them and the apparatus seeks to provide a low web tension area on either side of the gate 36 bounded by the respective capstans 32, 34. Thus in the projection of Fig. 1 with film F advancing from reel 22 to reel 24 each film advance due to the claw 36 increases tension between the capstan 34 and the gate 36 and decreases it between the gate 36 and capstan 32. The capstans 32, 34 then permit film advance over them so that the desired web tension ratios may be achieved. Spring rollers 52, 70 move between the positions shown in Fig. 1 during film advance. Various constructions of rotatable members are disclosed which move the film so as to regain the desired tension ratio by either varying the arc of contact between the film and member as shown or by replacing the surfaces 46, 48 with partly spherical surfaces to give variable values of the angle X.