baber/WOPTO huggingface dataset:
Patent GB-1532912-A (GB)
Title: Infinitely variable power transmission apparatus
IPC: F16H47/00
Filed: 1977-05-12
Abstract: 1532912 Hydraulic transmissions; changespeed gears TURCIHNSKE STROJARNE 12 May 1977 19959/77 Headings F2W and F2D In a transmission for a motor vehicle wherein a torque converter 12 is connected in parallel with a mechanical or hydrostatic variable ratio transmission 11 between an engine 1 and an output shaft 13, a clutch 141 is provided between the torque converter 12 and output shaft 13. The clutch 141 may, as shown, be a one-way clutch or may be a multiple disc friction clutch as a positive clutch controlled in response to output speed. The gears 14 interconnecting the output shaft 13 with the torque converter 12 and transmission 11 may be epicyclic. The pump 111 of the hydrostatic transmission may be of the swash-plate type.
Patent GB-1429994-A (GB)
Title: Optical arrangement for recording a variable light absorbance in objects also having a variable optical thickness
IPC: G01N21/59
Filed: 1973-04-26
Abstract: 1429994 Photo-electric absorption meter INGENJORSFIRMAN GRADIENT BIRGIT & HARRY RILBE 26 April 1973 [26 April 1972] 19990/73 Heading G1A Apparatus for measuring along the x co-ordinate the light absorption in a cell 7 containing a column of liquid in which both the absorption and the refractive index are variable along the co-ordinate comprises a primary light source 2, filters 4, 5 to render the light mono-chromatic, a secondary light source 3 in the form of a matt screen, a slit 9 which limits in the direction of the x-co-ordinate the light impinging upon a phototube 11, a device 12 for moving the cell along the x co-ordinate and a device 13 for moving the phototube along the optical axis 1, the apparatus being such that in operation the secondary light source has a constant intensity along the x co-ordinate over a length which subtends an angle at the slit which is greater than the angle, α, subtended at the slit by the phototube. In alternative embodiments: Fig. 2 (not shown) uses a mono-chromator (6) instead of light filters and the cell wall facing the monochromator is matt and serves as the secondary light source; Fig. 3 (not shown) differs from Fig. 1 in that the secondary light source 3 is omitted and an incandescent lamp with a long, straight filament oriented in the x co-ordinate is disposed close behind the cell, the filters 4, 5 are disposed between the slit 9 and the phototube 11; Fig. 4 (not shown) differs from Fig. 1 in that cell 7 has a cooling mantle (14) which prevents close proximity between slit 9 and the cell so a lens (10) is provided to produce an image of the slit at the middle plane of the cell, also a surface of the light filter 5 is matt and serves as the secondary light source; Fig. 5 (not shown) differs from (Fig. 3) in that the optical axis is turned through a right angle on the right of the cell by means of a 45 degree prism (15), the slit 9 being engraved by metal-plating on a side of the prism. Fig. 6 shows apparatus for absorptiometric analysis of a stained gel slab 8 which rests upon a matt plate 3 of material transparent to light from a lamp 2 extensive in the direction of the x coordinate, above the slab an assembly of light filters 4, 5, slit 9 phototube 11 and lens 10 all mounted on a supporting element 16 is movable along the x co-ordinate. Fig. 7 (not shown) differs from Fig. 6 in that the assembly of the slit 9 and tube 11 is immovable, the slab 8 with matt plate 3 is movable in the x direction, the primary light source 2 is smaller, the gel is close to the slit so no lens is required, and the filters 4, 5 are placed between primary and secondary light sources.
Patent GB-649327-A (GB)
Title: Improvements in or relating to stoppers or corks especially for vacuum flasks
IPC: B65D47/12
Filed: 1947-07-25
Abstract: 649,327. Stoppers. SCOTT, F. July 25, 1947, No. 20000. [Class 125(iii)] A stopper especially for a vacuum flask comprises a lower portion 1 with a conduit 3 forming a pouring spout 3a within and around which a removable cap portion 2 fits frictionally, by means of an annular slit 4, so that the assembly forms a stopper of normal frusto-conical shape.
Patent GB-873607-A (GB)
Title: Improvements in or relating to processes for production of low permeability carbon
Inventor: RIVINGTON HERBERT LAWRENCE
IPC: C04B35/52
Filed: 1958-06-23
Abstract: The permeability of a carbon or graphite article, e.g. a tube, is decreased by impregnating with furfural and successively polymerizing and carbonising the furfural under pressure and heat in the absence of a catalyst.  The furfural may be admixed with furfuryl alcohol, or may contain cellulose acetate, ethyl cellulose, or pitch.  The article may be first evacuated and then impregnated in a nitrogen atmsphere.  The nitrogen pressure may then be raised to 800-1100 p.s.i. and the temperature to 305-310 DEG C. to polymerize and carbonise the furfural.  The treated article may be calcined at a temperature of 1000 DEG C. at atmospheric pressure in air surrounded by graphite powder or nitrogen, or in a vacuum.  The treated article may be graphitised by heating to 2800 DEG C.  The successive steps of impregnation, polymerization, and carbonisation may be repeated a number of times.  The permeability of the calcined article may be 9.3 X 10-7 darcys and its bulk density 1.93 gm.  Examples are given.
Patent GB-1270400-A (GB)
Title: Power assisted steering gear
IPC: F03C1/40
Filed: 1969-04-18
Abstract: 1,270,400. Power-assisted steering. TOYODA MACHINE WORKS Ltd. 18 April, 1969 [26 April, 1968], No. 20068/69. Heading B7H. [Also in Division F1] In a power-assisted steering gear comprising a housing 1, first and second steering shafts 37, 23 rotatably mounted in the housing, the first shaft being manually rotatable relative to the second shaft (which forms part of an hydraulic motor) against the resilient resistance of means 38, a valve sleeve or member 30 with bores 30a, 30b, 30c for the passage of fluid from a pump 33 and a valve spool 31 which is threadedly engaged with the first shaft 37 and is moved axially on relative rotation of the shafts 37 and 23 to distribute fluid between the pump 33, the motor and a reservoir 36. Extensions 23c on the end of the shaft 23 engage slots 31a, 31b of the valve spool to prevent relative rotation but permit relative axial motion therebetween and engage radial extensions 37b, 37c of the first shaft to limit relative rotation therebetween. The sleeve 30 may be fixed or rotatable with the second shaft (Fig. 6, not shown). A relief valve 41 is provided for the pump 33 as the valve is a closed centre valve. On movement of the valve spool, passages 9, 10 in the housing leading to the hydraulic motor are selectively connected through bores 30c, a groove of the valve spool and either bores 30a or 30b to the pump and through either bores 30b or 30a and passages 31e in the valve spool to passages 34a, 34b and the reservoir. The hydraulic motor is disposed in the housing 1 and may comprise a reciprocating piston 7 driving a pitman shaft 13 or a swash plate or rotary vane-type pump (see Division F1) driving the second shaft linearly.
Patent GB-243085-A (GB)
Title: Improvements in or relating to printing or painting on felt, rubber and like materials
IPC: B44C1/20
Filed: 1924-08-26
Abstract: 243,085. Trickett, Ltd., Sir H. W., and Ashworth, A. Aug. 26, 1924. Drawings to Specification. Ornamenting ; ornamenting fabrics. - Felt, rubber, and like flexible or elastic surfaces are printed or painted for ornamenting purposes by applying to the surface a finely subdivided adhesive, inserting particles of glass into the adhesive, and colouring with a semi-transparent colour which does not destroy the opalescence of the glass. The adhesive is preferably applied through a foraminous pattern such as gauze, bolting-cloth, milling-cloth, or the like, of which the surface outside the outline of the pattern is coated with a waterproof varnish or paint of such a nature that, when dry, it completely closes the openings in the gauze. The adhesive is applied to the gauze and is pressed through on to the surfaces to be decorated so as to form a series of spot-like coatings uniformly distributed within the outline of the design. A quan. tity of glass beads is then applied to the adhesive and, when dry, the beaded surface is tinted or coloured by means of a hand-brush, airbrush, &c. In a modification, the beads are dispensed with, and the adhesive-coated surface, after drying, is tinted or coloured. To enhance the apparent continuity of the decorated surface, the material if elastic, may be stretched in all directions during treatment. The process is applicable for ornamenting felt for slippers, and sheet rubber for aprons, bibs, bathing-caps, &c. According to the Provisional Specification, the tinting may be effected through the gauze screen.
Patent GB-314810-A (GB)
Title: Improvements in or relating to the manufacture of synthetic resins
IPC: C08F240/00
Filed: 1929-07-01
Abstract: 314,810. I. G. Farbenindustrie Akt.- Ges. July 2, 1928, [Convention date]. Condensation products from crude naphtha and alkyl-aryl ethers of the type in which Rand R<1> are the same or different alkyl groups and R<11> is an alkyl group or hydrogen, are made by treating a mixture of the crude naphtha and the ether with a polymerizing agent other than aluminium chloride. The products may be used in the manufacture of lacquers and plastic masses. Suitable polymerizing agents are tin tetrachloride, borofluoro acetic acid, and sulphuric acid. The ethers used may be crude mixtures containing also o- and p-isomers, such as can be obtained by alkylating crude cresol or xylenol mixtures. In the examples, (1) crude naphtha boiling at 160-185‹ C. and containing 54 per cent of coumarone and indene is condensed with m-xylenyl methyl ether with the aid of tin tetrachloride, and the reaction mixture is diluted with xylene and treated with lime; the mixture is then filtered and the solution evaporated; (2) molten crystallized ferric chloride is run into a mixture of crude solvent naphtha and m-cresyl methyl ether, with stirring, the reaction product being diluted with purified solvent naphtha, filtered, treated with fuller's earth and lime filtered again. and evaporated; (3) crude solvent naphtha is dissolved in the methyl ether obtained from crude cresol (containing 55 per cent of m-cresol), and borofluoro acetic acid is run in with stirring, the reaction product being finally heated with lime, filtered and evaporated: (4) crude solvent naphtha boiling at 163-182‹ C., free from phenols and containing 52 per cent of coumarone and indene, is mixed with m-xylenyl ether and treated with borofluoroacetic acid, and afterwards diluted with xylene or purified solvent naphtha and treated with lime or baryta; (5) crude solvent naphtha used in example 4 is mixed with xylenyl methyl ether obtained from xylenol containing 80 per cent of m-xylenol, and sulphuric acid is added, the mixture being afterwards diluted with purified solvent naphtha and the product washed with sodium carbonate and then with sodium chloride solution. Specification 316,987 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an example in which crude solvent naphtha and m-xylenyl ethyl ether is treated with antimony pentachloride dissolved in tetrachlorethane and afterwards treated with caustic soda. This subject-matter does not appear in the Specification as accepted.
Patent GB-1088589-A (GB)
Title: Improvements in or relating to cutter mechanisms for peeling fruit, such as pears
Inventor: HARRER THEODORE MICHOL
IPC: A23N7/02
Filed: 1966-05-06
Abstract: 1,088,589. Peeling pears &c. ATLAS PACIFIC ENGINEERING CO. May 6, 1966, No. 20219/66. Heading A4C. In a gas-pressurized cutter mechanism for peeling a fruit, such as a pear, mounted for rotation adjacent said cutter mechanism, a rotary knife 12 is supported on a shaft 14 rotating within a fixed tube 16 which is mounted in a pair of yoke arms 18 pivoted to a supporting member 10 on pins 22. An upstanding finger 26 bears on a piston rod 42 carrying a piston 38 which can reciprocate within a cylinder having an elastomeric sealing diaphragm 44. The cylinder is connected by passages 54, 58, 64 and 72 to a reservoir 84 containing a hydraulic fluid. The upper end of the reservoir is connected by flexible pipe 106 to an air manifold 110. Adjustment of the air pressure serves to maintain the cutter against the fruit at a constant, predetermined pressure. A removable plug 66 having a narrow orifice serves to damp down any rapid oscillations of the cutter mechanism, or a suitable constricting valve may be used instead. Light spring 30 merely acts as a safety device to maintain the cutter against the fruit in the event of failure of the hydraulic system. The whole cutter mechanism is mounted for movement along the axis of the fruit.
Patent GB-986037-A (GB)
Title: Process for making nitrocyclopropane
Filed: 1963-05-21
Abstract: Nitrocyclopropane is prepared by reacting a 1 halo-3-nitropropane comprising a major portion of 1-iodo-3-nitropropane with an inorganic compound selected from alkali metal hydroxide or carbonates such as sodium and potassium carbonate or bicarbonates preferably in an amount of between 1.0 and 2.5 moles per mole of 1-halo-3-nitropropane, in a reaction medium selected from water and a hydrocarbon solvent boiling above 80 DEG  C., e.g. toluene.  The 1-halo-3-nitropropane may be prepared by refluxing 1-chloro-3-nitropropane with excess alkali metal iodine in acetone. The 1-chloro-3-nitropropane may be produced by passing chlorine through a mixture of nitropropane and phosphorous pentoxide.
Patent GB-1076484-A (GB)
Title: Self starting electronic oscillating device for clockworks
IPC: G04C3/06
Filed: 1965-11-26
Abstract: 1,076,484. Clocks and watches. ITALORA S.p.A. May 13, 1965 [Dec.1, 1964; May 8, 1965], No. 20304/65. Heading G3T. A timepiece balance or mechanical vibrator, Figs. 2, 6, 7 and 8 (not shown) for driving a timepiece, is electromagnetically maintained by the transistor circuit which includes a tapped coil 13 co-operating with an oscillating magnet. The coil constitutes exciting and drive windings respectively in the input and output circuits of the transistor 29. The emitter e is connected to the centre tap of the coil, one end of which is connected through battery 30 to the collector c, the other end being connected through a condenser 27 to the base. In operation, induced voltages are generated in the exciting winding due to the remaining coil section constituting the driving winding and the currents through the driving winding, due to the periodic conduction of the transistor, generate a field which reacts with the magnet. The device is self-starting. A resistor shunt R may be connected between the collector and base electrodes. This resistor has a temperature variation factor of resistance having a sign opposite to that of the collector-base resistance, so as to compensate for temperature variations.
Patent GB-1196204-A (GB)
Title: Method of Chemically Etching Metal Articles
Inventor: SILBERBERG KENNETH J
IPC: C09J153/02
Filed: 1968-04-29
Abstract: 1,196,204. Etching. PUREX CORP. Ltd. 29 April, 1968, No. 20308/68. Heading B6J. [Also in Division C3] A masking composition used in etching processes comprises a block copolymer of styrene and butadiene together with a minor proportion of a polymer of α-methylstyrene. The composition is applied by spraying, brushing, flow coating, dipping or silk-screening to metal substrates, e.g. aluminium, aluminium alloys, or other ferrous and non-ferrous alloys, and after forming a pattern in the mask by, e.g. scribing, the un-masked areas are etched with acid or alkali. Specified etchants are potassium hydroxide, sodium phosphate, soda-ash and, preferably, sodium hydroxide at temperatures above 100 F. The polystyrene block of the copolymer has a minimum molecular weight of 5000, and the polybutadiene block has a minimum molecular weight of 15,000, while the ratio of styrene to butadiene is preferably between 2: 3 and 1: 4. The copolymer is present in the masking composition in 5 to 25% amounts by weight, and the α-methyl styrene polymer, which preferably has a molecular weight between 5000 and 60,000, is present in at least 2 parts per 100 parts of block copolymer. The balance of the masking composition is made up by organic solvent, and may also include 0À25 to 10% by weight of a phenolic resin, e.g. nonylphenolformaldehyde resin, and 0.025 to 1% of a metal oxide. The mask may be removed in a plurality of successive etching operations, each operation removing a layer of the mask.
Patent GB-1030693-A (GB)
Title: Stop for railed vehicles
Inventor: WOOD PHILIP
IPC: B66B17/20
Filed: 1961-06-06
Abstract: 1,030,693. Retaining vehicles in lift cages. COAL INDUSTRY (PATENTS) Ltd. Sept. 6, 1962 [June 6, 1961], No. 20417/61. Heading B8E. [Also in Divisions B7 and F2] A stop for railed vehicles, comprises a member 1, Fig. 1, mounted by a square section spindle 2 in rubber bushes 3 which bias the member 1 to the shown position with face la abutting the base 5 of mounting bracket 4. The stops are mounted in a mine cage in conjunction with axle stops to normally hold a mine car 6 stationary, but the member 1 is rotated when the mine car receives a sufficient momentun or moving force to allow the car to enter or leave the cage. A switch 13 is operated to give a signal when the car is in a position other than a central position in the cage. The member 1 may be locked in its raised position by positioning a resilient-material faced member immediately beneath member 1, the member 1 being released when the cage reaches a decking level, Fig. 4 (not shown). In Fig. 5, a plunger 21 is normally held raised by springs 25 and is prevented from being depressed by wheel W by a locking member 27; this member is withdrawn by levers 29 when rotated by a roller 32 being engaged by a cam mounted for example just before an unloading station is reached in a mine shaft, so that the mine car can be pushed from the cage. The levers 29 are biased by rubber bushes to project the member 27 beneath plunger 21, Fig. 6 (not shown). Should it be impossible to enter member 27 beneath plunger 21, due to the non-central positioning of a car in a cage, then a spindle on levers 33 contacts a trip upon movement of the cage to stop the cage. Two connected plungers may be spaced apart to form a trough for a wheel. An elongated plunger may extent between a pair of wheels.
Patent GB-442355-A (GB)
Title: Improvements in or relating to mixing machines
IPC: A21C1/10
Filed: 1935-07-19
Abstract: 442,355. Mixing and aerating. GILBERT, W., Fyna Works, Lots Road, We t Brompton, London. July 19, 1935, No. 20534. [Class 86] [See also Group VI] Mixing-machines comprise a bowl fitted with a valve for the admission of air supplied from a compressor, the valve closing automatically when the compressor is cut out. The valve g is controlled by a spring and allows air to escape from a chamber f fitted to the base of the bowl a, the air being supplied to the chamber from a compressor ; the air may be passed through an electric heater.
Patent GB-448591-A (GB)
Title: Improvements in or relating to dolls
IPC: A63H3/48
Filed: 1935-07-19
Abstract: 448,591. Dolls. BOWERS, C. E., 809, Hill Building, 17th Street, Washington, U.S.A. July 19, 1935, No. 20583. Convention date, July 19, 1934. [Class 132 (iii)]. A doll has an elastic area surrounding the mouth and a sound device which are actuated by pressure on the body. Fig. 1 shows a hollow rubber doll and Fig. 2 shows a doll comprising a fabric covering 14 filled with horsehair, kapok or sawdust 15 adapted to impart to the doll the " feel " of the human body. The head of the doll is hollow and comprises a rigid foundation 25 of hard rubber or moulded composition with a painted elastic covering 26 which may be cemented on to the foundation 25 over practically the whole surface thereof except that portion which surrounds the mouth. The foundation 25 is preferably formed of two portions 25 and 25<1> for facilitating insertion of mechanism described below. The elastic covering 26 adjacent the upper lip of the doll is connected by elastic lugs 68 and 69 to prongs 66 and 67 on pivoted Z-shaped levers 43 and 44 having slots 59 and 58 with which engages the U-shaped link 52 whose legs 54 and 55 are pivoted in the plate 29. The link 52 is pivotally connected to the upper end of a link 62 pivoted at 63 to the spring controlled lever 20 pivoted at 21 and bent at 22 to be connected to a flexible abdominal portion 23 to which pressure can be applied. The elastic covering adjacent the lower lip is connected by a lug 74 and prong 73 to a bell-crank lever 48 pivoted at 46 on plate 29 and connected by link 72 to link .62. A time lag may be introduced between the stretching of the upper and lower lips by having a slot connection between the link 72 and the lever 48. The eyes 78, 79 are gravity operated by weights 83 and may also be operated by lever 20 through slotted links 86 and 87 connected to arms 82 and 82<1>. A bellows 90 can be operated by the lever 20 through the link 91 to give sound suitable for facial expression. In a modified construction the foundation 25 may be omitted and the head made entirely of rubber which is heavy adjacent the plate 29 and thinned down to form the movable portions of the face.
Patent GB-164372-A (GB)
Title: Improvements relating to retort settings
IPC: C10B1/04
Filed: 1919-08-21
Abstract: 164,372. Low Temperature Carbonisation, Ltd., Armstrong, H. L., and Davidson, T. M. Aug. 21, 1919. Gaseous-fuel furnaces; regenerators.-In settings for vertical retorts having heating-flues in the vertical spaces between them, the waste gases pass out through flues formed in two parallel portions i, j, Fig. 3, separated by a narrow partition wall, air-preheating flues l, m, similarly formed, being disposed parallel to, and at the sides of, the waste-gas flues, and having communicating passages n extending through the partition wall. In the retort setting shown, horizontal partitions b form a number of communicating horizontal heating-chambers c, gas burners d being arranged at alternate ends of successive chambers. The products of combustion pass downwards through openings e in the horizontal partitions, finally passing from the lowermost chamber c through a flue g to the vertical flue i, and thence downwards through the flue j to the stack. Secondary air, heated in the flues l, m, passes through passages o into passages in which the burners d are arranged. It may also be supplied to the chambers c from longitudinal passages in the partitions p with transverse ports at intervals; or the passages may extend to the outside of the setting and communicate with the outer air.
Patent GB-597132-A (GB)
Title: Improvements in or relating to the manufacture of cartons
IPC: B65D5/06
Filed: 1945-08-10
Abstract: <PICT:0597132/III/1> <PICT:0597132/III/2> Foldable cartons are pasted together by first bringing the closing flaps of two opposite carton sides against one another in such a way that a portion of the flap of one side overlaps a portion of the flap of the other side, whereupon the overlapping portion is stuck down over its own flap and the carton is moved along a mechanized pasting device with the outwardly turned face of the turned-back portion in contact with a paste-delivering implement after which the portion thus coated with paste is turned down over the edge of the adjacent carton flap and is secured thereto.  In a modification, the portion of the flaps adapted to form the overlapping joint is turned back 180 degrees before the closing flaps of the carton sides are brought together.  A scoring line may be used to indicate the line along which the flap is to be turned back.  Fig. 4 indicates the flap 4 turned back on carton side 2 which has been brought against carton side 3, and being pasted by roller 6, while Fig. 5 indicates the flap turned over after pasting.