baber/WOPTO huggingface dataset:
Patent GB-220380-A (GB)
Title: Improvements in ejectors for vacuum brake apparatus
Filed: 1923-05-16
Abstract: 220,380. Gresham, H. E., and Kiernan, G. May 16, 1923. Ejectors, regulating or controlling action. - An ejector system for vacuum train brakes comprises a main ejector b put into operation after the application of the brakes, a small continuously-acting ejector c for maintaining the vacuum against leakage, and one or more further small ejectors d put into operation when the continuously-acting ejector is unable to maintain the normal vacuum. The ejectors may as usual draw air through the centre and around the edge of the steam jet, and the small ejectors discharge into an annular passage around the discharge cone 4 of the large ejector. The steam supply to the large ejector b, which may have central and annular steam nozzles, is controlled by the ordinary brake application handle f . Fig. 8, acting on a liftvalve j, Fig. 4, through a shaft g and rod i. The steam supply to the other ejectors is controlled independently of the main ejector by a rotary valve q, Fig. 4, held on its seat by steam pressure and adjusted by a handle x. This handle carries a spring pin y, Fig. 10, which engages a lug z on the casing to limit the normal movement of the handle to the control of the continuously-acting ejector. The pin is pulled outwards to allow the handle to be moved further for putting into operation the subsidiary small ejector d. A common steam chamber k, Fig. 4, is provided for all the ejectors, and the train pipe c communicates with an air lock chamber 5, Fig. 8, in the injector casing through a non-return valve 6. A non-return valve 7 is provided between the chamber 5 and the main ejector passages 8, 9, Fig. 5, a similar valve 13 is arranged in the induction passage of the continuously-acting injector, and a further valve 18 is provided in the air passage of the subsidiary small ejector, the valve 13 being always open when the last ejector is working. A relief valve 20 may be provided to admit air when the vacuum in the air-locli chamber exceeds a desired limit, and an automatic ball valve may be provided to admit air freely when the vacuum falls. As shown in Fig. 4, a cap 21 on the handle x may be formed with a cam edge to act on a lever 22 and thereby control a valve 24 for admitting air through a passage 25 to the air-lock chamber, the arrangement providing for positive opening of the valve when the steam supply to the small ejectors is cut off. The closing of the valve is effected by a spring. Specifications 4801/78, 6284/10 and 12595/12 are referred to.
Patent GB-1391334-A (GB)
Title: Apparatus for and method of winding coils
IPC: H01F41/06
Filed: 1972-03-21
Abstract: 1391334 Coil winding apparatus BALZER & DROLL KG 21 March 1972 [31 March 1971] 13149/72 Heading B3E Apparatus for winding a coil on to a former 10 (12), Fig. 6, of multi-sided cross-section comprises a wire guide 28 arranged to travel relatively around the former and its axis for the purpose of laying wire thereon, in which the path of relative travel of the wire guide is the resultant of a circular path, together with a superimposed relative motion, the resultant path, Fig. 3, being flattened relatively to the circular path around the former axis in the region of one of the former sides. The angular speed of the resultant path of the wire guide 28 around the former is reduced in regions T 2  where the wire is laid flat upon the former sides, and the rate of increase of unwinding speed from the guide is less than that of a corresponding circular path at a region immediately following the laying of the wire flat on a former side. Drive shaft 14, and hence former 10 (12), is driven with a constant rotary speed. Winding wire 30 is guided through hollow shaft 26 to the guide 28, respective inserts 32, 34, 36 of hard material protecting the shafts and guide. Shaft 26 is rotated with wire guide 28 from shaft 14 by toothed pulleys 40, 42 and a toothed belt 44 connecting the two pulleys. To produce, for example, an elliptically-shaped rotary path when using a flat, elongated former 10, the ratio of the number of teeth of the pulleys 40, 42 is 2 : 1, and the angular position of shafts 14, 26 are selected accordingly to give the respective orientations between the resultant path and the former. The shaft 14 is shifted back and forth several times to wind the wire layers. Alternanative embodiments, Figs. 7-9A (not shown), operate in basically the same manner However, where production of coils comprising two individual windings alongside each other is required, a further embodiment, Fig 10 (not shown), is used. Two shafts (26a, 26b), both driven by toothed belt 44, are used to build up two coil sections (122), (124). The term wire includes threads and other filaments which may be wound into coils by the apparatus as well as wire.
Patent GB-290824-A (GB)
Title: Improvement in automobile lamp
IPC: D04B9/26
Filed: 1927-05-16
Abstract: 290,824. Kern, M. H. May 16, 1927. Vehicle lamps. - A head lamp rotatable about a horizontal axis comprises a main reflector 47, Fig. 6, and an auxiliary reflector 48 with separate light sources 45, 46, the axis of the auxiliary reflector extending to a point near the edge of the main reflector. The main electric bulb 45 is connected to the supply through a contact 57, Fig. 4, which normally engages a contact 55, and when the lamp is tilted downwardly so that the front glass 49 is substantially horizontal this connection is broken and the contact 55 engages a contact 56 connected to the auxiliary bulb 46. which is thus lit, giving forward and downward light on the ground.
Patent GB-952973-A (GB)
Title: A process for the production of unsaturated esters and alcohols
IPC: C07C69/145
Filed: 1962-04-05
Abstract: A process for the production of unsaturated esters and alcohols comprises reacting an ester of formula: <FORM:0952973/C2/1> where X is a carboxylic acid ester radical, R1 a hydrogen atom or a p- or sec alkyl or alkenyl radical, and R2 a p- or secalkyl or alkenyl radical or phenyl radical, with an aliphatic or cycloaliphatic olefinically unsaturated compound which may be an olefine or an olefine substituted by an ester, ether or hydroxy group in the presence of a Friedel Crafts catalyst. R1 may be methyl-, ethyl-, propyl, propenyl- and 4-methyl-pent -3-enyl-radical and 4, 8-dimethyl-nona-3.7 dienyl, and the ester radical may be acetate, propionate, butyrate or benzoate and esters mentioned are a , a -di methylallyl (prenyl) acetate, crotyl acetate or cinnamyl acetate. The olefines and substituted olefines may be isobutene, styrene, a -methylstyrene, anethol, isosafrol, limonene, cyclohexane, propylene, isoprene and butadiene, or compounds of the formula of the first component such as, g g-dimethallyl, methallyl, 2-methyl-but-1-ene, isopentenyl and geranyl acetates. Orthophosphoric, pyrophosphoric, dichloracetic, perchloric, sulphuric, boron trifluofride, zinc chloride or toluene sulphonic acids are mentioned as suitable cataysts and the process may be in inert solvent such as acetic acid esters. Examples describe the reaction of isobutylene with g , g -dimethylallyl (prenyl) acetate to form 2, 6dimethyl-hept -2- enyl-acetate together with higher boiling constituents; anhydrous g , g dimethallyl acetate with itselt, alone or in ethyl acetate diluent, to form oxydihydrolavandulydiacetate, lavandulyl acetate, and higher boiling point constituents; g , g 2-dimethallyl propionate with itself to form lavandulyl propionate, oxydihydro-lavandulyl dipropionate and a higher boiling residue; 2-methyl-but-1-ene-4- acetate with g , g -dimethallyl acetate to form terpene acetate (lavandulyl, alto- and iso-geranyl and neryl acetates), 2, 6-dimethyl oct-2- ene-6, 8-diol-diacetate and sesquiterpene acetate with higher boiling fractions; isopentenyl acetate and prenyl acetate in ethyl acetate or acetic acid to yield terpene acetate, geraniol-hydrate-diacetate and higher boiling point fractions; isopentenyl acetate and g  g -dimethylallyl acetate with a pyrophosphonic acid catalyst (followed by) the saponification of the ester to form terpene alcohol (lavandulol, a C10 alcohol, iso-and altogeraniol, nerol, and geraniol); isopentenyl benzoate in ethl acetate followed by saponification to lavandulol, alto- and isogreraniol, nerol, and geranol; 2, 6-dimethylocta-2, 6-dien -8- ol (geranyl) acetate with isopentenyl acetate followed by saponification to fornesol; isopentenyl acetate and prenyl acetate to form terpene acetate, geraniol-hyrate, di-acetate and higher boiling components.
Patent GB-1449439-A (GB)
Title: Constituents for glass
IPC: C03B3/00
Filed: 1975-04-01
Abstract: 1449439 Compacted vitrifiable material SAINT-GOBAIN INDUSTRIES 1 April 1975 [4 April 1974] 13223/75 Heading C1M A vitrifiable mixture for feed to a glass fusion furnace 1 comprises a compacted mass 18 of solid particles which contains substantially no. air inclusions, the compacted mass having an apparent density at least 85% of the average real density of the particulate material. The batch mixture 13 is preferably fed from hopper 10 to rotating compaction rollers 8; 9 by screw conveyer 12 through duct 5, air inclusions being evacuated through ducts 14, 15. The compacted mass 18 formed may be in the form of plates of thickness up to 2 cm., the mass sliding down shoot 19 to the molten glass 2 in furnace 1. The batch mixture 13 preferably contains neither water nor binder, and is compacted at ambient temperature. The mixture preferably contains at least 50% by, weight of. grains of size not more than 0À1 mm in size. In examples, mixtures consisting of (by weight) 59% sand, 16% sodium carbonate, 5%. chalk, 18% dolomite, and 2% sodium sulphate; were compacted at 1600 kg./cm.<SP>2</SP> and 2500. kg/cm.<SP>2</SP> pressure respectively, before feeding into the molten glass 2 which was at 1350‹ C. Boiler scale 4 may also be fed to the furnace 1.
Patent GB-1277661-A (GB)
Title: Improvements in or relating to electric switch control units for electric motor driven actuators
Inventor: FRY JEREMY JOSEPH
IPC: F16K31/04
Filed: 1969-03-13
Abstract: 1277661 Valves ROTORK Ltd 10 March 1970 [13 March 1969] 13260/69 Heading F2V [Also in Division H1] In a limit switch arrangement for controlling the electric motor drive of an actuator shaft (Fig. 1, not shown) and otherwise the same as that of Specification 1,207,967, the means for initially latching the striker plate 40 comprises a pawl 82 pivoted at 83 to a fixed part and having a portion 85 engageable with a lug 81 on the plate 40. A release cam 92 is carried by the auxiliary striker 80, whereby when striker plate 40 is turned to engage one or other of the limit switches 10a, 10b pawl 82 latches the lug 81; thereafter actuation of plate 40 in the opposite direction by an overload is prevented until the auxiliary striker 80 is moved back to its middle position in response to actuator end stop movement. Reference has been directed by the Comptroller to Specifications 1,003,761, 1,003,764, 1,003,765, 1,003,766, 1,011,989 and 1,027,526.
Patent GB-390338-A (GB)
Title: A combination electrical switch, with variable combination
IPC: H01H27/10
Filed: 1932-05-09
Abstract: 390,338. Secret contact combination switches. MOSS, C. H., Lindfield, Vista Road, Clacton-on-Sea. May 9, 1932, No. 13289. [Class 38 (v).] A switch, particularly for preventing the unauthorized use of motor vehicles, comprises a series of discs a each having an integral pinion b of insulating material having a single metal tooth c connected with a spring contact d on the other side of the disc a. A ring f, frictionally mounted on a hub e, has on its outer surface a series of letters or symbols. A series of discs are mounted on a spindle so that when a predetermined combination of letters is set, the contacts d engage the metal teeth c of neighbouring discs. The end discs are provided with a metal disc g to contact with the outgoing leads. The switch is mounted in a casing having the milled flanges a projecting through slots to enable the combination to be set, and small openings are provided to view the letters. The rings f can be rotated relative to the discs a to enable the combination to be altered.
Patent GB-1095103-A (GB)
Title: Variable-impedance transmission-line device
Inventor: MCPHUN MICHAEL KEITH
IPC: H01P5/04
Filed: 1966-03-25
Abstract: 1,095,103. Impedance matching. MULLARD Ltd. March 25, 1966, No. 13292/66. Heading H1W. Impedance matching of a coaxial line or symmetrical (sandwich) strip line is effected by means of a movable member which provides different characteristic impedances in successive quarter-wave sections of the line. The member must therefore be at least one halfwavelength long, the required difference in impedance being obtained either by varying the cross-sectional shape of the member continuously or providing two or more portions with different shapes (e.g. C9, C10, Fig. 14). The member may be moved linearly towards and away from the central conductor of the line as in Fig. 5 or may move in an arcuate path about a hinge. Such a hinge may have an axis parallel to or at right-angles to the axis of the line, as in Fig. 17. Thus, the member may form part of the outer conductor of a coaxial line, such part being rotatable about a hinge arranged parallel to the inner conductor, as in Fig. 12.
Patent GB-1183134-A (GB)
Title: Mechanical Seal Assembly
IPC: F16J15/38
Filed: 1968-03-19
Abstract: 1,183,134. Mechanical seals. BORG-WARNER CORP. 19 March, 1968 [7 June, 1967], No. 13304/68. Heading F2B. In a mechanical seal for a rotary shaft 14 where it extends through a housing wall 11 subject to reversal of fluid pressure differential thereacross comprising a non-rotary sealing ring 45 on the wall having a sealing face 44 urged by fluid pressure into contact with a sealing face 43 of a rotary ring 38 on the shaft, the rings are movable, in unison, axially of the shaft between limiting positions by reversal of the fluid pressure differential, the non-rotary ring 45 being slidably sealed to the wall as by an O-ring 58 along a cylindrical surface 60 of radius r 3 , and the rotary ring 38 being slidably sealed to the shaft, as by an 0-ring 41, along a cylindrical surface 62 of radius r 4 , the radii r 3  and r 4  each being less than the outer radius r 2  and greater than the inner radius r 1  of the sealing interface 43, 44. The ring 45 is prevented from operating by a pin 56 thereon engaging a slot 57 in a holder 46 fixed to the wall 11 and the ring 38 is mounted on a sleeve 24 fixed to the shaft and is driven from the sleeve through a spring holder 32 keyed to the sleeve and having a tang 40 engaging a slot 39 in the ring 38 which is urged towards the ring 45 by springs 37. The O-rings 41 and 58 are located in grooves 42 and 59 in the sleeve 24 and holder 46 respectively. A pump impeller 22 is fitted on the shaft 14 which may be driven by a motor (not shown) enclosed in a shell filled with oil under pressure communicating with the cavity 12 through a bore 52 in the wall 11. When the pressure P 1  of the fluid in the cavity 12 exceeds the pressure P 2  of the fluid in the impeller cavity 53 the rings 38, 45 assume the position shown in Fig. 4 with the ring 45 abutting a.shoulder 65 on the holder 46. When P2 exceeds P 1  the rings move to the left and become disposed as in Fig. 2 with a surface 66 on the ring 38 abutting a shoulder 67 on the shaft sleeve 24. The effect of the springs 37, which may be omitted and operate to bias the springs to the right when there is no pressure drop across the seal, is relatively small. The effective areas A 1 , A 3  at each end of the seal subject to the pressure P 2  and P 1  respectively are between 50% and 95%, preferably 75%, of the area Ao the sealing interface 43, 44.
Patent GB-131006-A (GB)
Title: Improvements relating to the Destructive Distillation of Wood, Woody Fibre, Peat and similar Carbonaceous Substances.
Inventor: POORE PHILIP
IPC: C10B53/02
Filed: 1917-09-17
Abstract: 131,006. Poore, P. Sept. 17, 1917. Retort furnaces.-Wood, peat, and other carbonacous material in small pieces is dried in a kiln by waste gases from a furnace admixed with air, and the dried 'material is distilled in a retort and subjected to the action of superheated steam. A superheater for the steam is heated by the waste products from the distillation furnace. As shown, a cylindrical retort b is heated in a furnace a with rails a<1> for the retort to be removed for charging through an opening normally closed by a cover a<7>. The flames from the fire pass a damper a<8> and are led by flues a<2> through guides a' and around the retort. Vertical flues a<5> deliver the furnace gases to a superheater d and a pipe f carries the gases through a tank g with screens g<2> for removing soot &c. and the gases are mixed with air admitted through a passage g<7> controlled by a damper g<6> and pass through a pipe g<8> to a drying chamber h with inclined bottom h<1>, charging door h<3>; and discharging door h<4>. The waste gases and vapour from the chamber h are removed by a pipe h<2> and fan i. According to one Provisional Specification, baffle plates or curtains may be provided in the drying-kilns-
Patent GB-260882-A (GB)
Title: Manufacture of a manure
IPC: C05F11/02
Filed: 1926-05-26
Abstract: 260,882. Rippert, P. May 26, 1926. Manures. - A manure is made by treating peat, brown coal, or the like with alkali and oxygen successively and then adding cultures of aerobic yeasts, such as Torula yeasts, which form proteins in the presence of ammonia. Nascent oxygen produced by reaction of the peat &c. with a substance containing oxygen, for example a solution of potassium permanganate containing some hydrogen peroxide, is preferably used. Reference is made to a manure containing peat, crude phosphate, potash solution, molasses and compost, made from farmyard manure, night-soil and garden earth, heaps of the mixture being repeatedly turned and watered with urine; and also to the treatment of night-soil and slaughterhouse refuse with a culture of beer yeast in a mixture of urea, sodium carbonate, potassium phosphate and urine.
Patent GB-1463491-A (GB)
Title: Strainer particularly for use in a slaughter-house
IPC: B01D33/00
Filed: 1975-04-01
Abstract: 1463491 Filter fabrics B J A TER HART 1 April 1975 [4 April 1974] 13336/75 Heading D1K [Also in Divisions B1 and B2] A stainless steel woven fabric, for making an endless filter belt, comprises parallel cables 27, 28, 29 which extend lengthwise of the belt and which each comprise six wires of 0.2 mm diameter, alternate cables being twisted in opposite directions, and a transverse wire 31 of 0.45 mm diameter woven across the cables. The fabric has a mesh aperture of about 0.5 mm x 0.5 mm.
Patent GB-1465188-A (GB)
Title: Apparatus for collapsing blown tubes
IPC: B29C48/10
Filed: 1974-03-26
Abstract: 1465188 Collapsing tubular films GENERAL ELECTRIC CO 26 March 1974 [9 April 1973] 13482/74 Heading B5B Inflated circular cross-section tubular film is flattened by a process in which the film is first given a substantially square cross-section. In the embodiment disclosed in Fig. 1 the tube is surrounded by frame 11 supporting rollers 16 which engage the film and force it into a square cross-section at 20. The film is then flattened by nip rolls 17. This process is stated to flatten the films with less stress and deformation than the conventional manner.
Patent GB-474919-A (GB)
Title: Improvements in, or relating to, snap-action electrical switches
IPC: H01H5/18
Filed: 1936-05-13
Abstract: 474,919. Snap-action switches. CRABTREE & CO., Ltd., J. A. (Schiele & Bruchsaler- Industriewerke Akt.-Ges.) May 13, 1936, No. 13496. [Class 38 (v)] A snap-action switch comprises a leaf spring 1 of the form shown in Fig. 6 clamped by central ears 1a, 1b between insulating members 2a, 2b formed with V-shaped channels 7a, 7b to allow for movement of the arms of the leaf spring 1. A tension spring 5 is connected between the ends of a central aperture in the spring 1 and causes contacts 3a, 3b to snap between fixed contacts 4a, 4b and stops 6a, 6b when the members 2a, 2b are moved up and down, either by a diaphragm 2c acting against control springs 12, 13 or by manual means.
Patent GB-679832-A (GB)
Title: Improvements in the production of cellulose and cellulose derivatives
Inventor: BATE STANLEY CHARLES
IPC: C08B1/02
Filed: 1949-05-20
Abstract: Cellulosic material is purified and rendered more reactive, particularly towards esterifying and etherifying agents, by treating it with an aqueous caustic alkali solution of concentration between 15 and 22 grams of alkali per 100 c.c. of solution at a temperature between 40 DEG  and 60 DEG  C. and, after removal of all or substantially all of the alkali, boiling the purified cellulose so obtained with water for a period of at least 15 minutes.  The process may be applied to wood and straw pulps which have an alpha-cellulose content above 85 per cent and a pentosan content below 3.5 per cent. After the treatment, the material may have an alpha-cellulose content above 92 per cent and a pentosan content below 1 per cent.  At the end of the alkali treatment, the greater part of the alkali solution may be removed by filtration, centrifuging, or other method in which no dilution occurs, so that the solution may be used for treating another portion of cellulosic material.  The remainder of the alkali solution may be washed out of the material by cold or hot water. A treatment with acidified water may be followed by treatments with plain water.  For the water-boil there may be used mains water, river water, demineralized water, or distilled water.  The water boil may be combined with the final washing stages, e.g. the material may be boiled with acidified water for 15 minutes or more and then with plain water at a temperature above 80 DEG  C.  The treatment may be preceded or followed by other treatments, e.g. by treatment with chlorine or hypochlorite, or with caustic alkali solutions of different concentrations and temperatures. Specifications 427,626, 470,764, and 509,938, are referred to.
Patent GB-164605-A (GB)
Title: Method of controlling furnace temperature
IPC: F27D7/00
Filed: 1920-05-17
Abstract: 164,605. Fuller, G. F. May 17, 1920. Liquid and gaseous fuel furnaces.-In a furnace, more particularly for heating steel, the temperature in the working chamber 10 is controlled by cooling the combustion products, generated in the chambers 12 by burners 15, with regulable quantities of steam, or other low temperature gas, injected by nozzles 16; the mixture in the chamber 11 passing through perforations in the crown 20 and finally escaping through flues 14. The temperature in the chamber 10 may be still further lowered by opening the bye-pass dampers 23 in the exit flues 14, which are interspaced between vertical combustion product flues 13. In a modification, the mixing chamber 11 is dispensed with, and the steam nozzles 16 project into the chamber 10.
Patent GB-135697-A (GB)
IPC: C03B15/18
Abstract: 135,697. Forster, A. L. Jan. 28, 1919. Drawing.-In drawing-apparatus of the kind in which sheet glass c is drawn up between endless asbestos belts d, rows of short spring-pressed rollers l are employed to improve the grip of the belts d on the glass c. By using short rollers l, breakage of the sheet c is said to be avoided. One of the bottom rows of rollers may be replaced by a flat plate r, Fig. 5, to assist in flattening the drawn sheet. Chain-mail may be incorporated in the belts d to increase their strength.
Patent GB-236504-A (GB)
Title: Improvements in and relating to wheel-barrows
IPC: B62B1/24
Filed: 1925-05-25
Abstract: 236,504. Nalder, G. F. May 25, 1925. Wheel barrows; tipping carts.-A wheel barrow of the kind comprising a main frame 2, 3, 6, 13, 15 and a tipping frame 16, 17 pivoted to a transverse axis 9 and adapted to carry the load receptacle 12, is provided with stops 30 which limit the extent of the tipping as shown in full lines and enable the tipping frame to be returned to its normal position by jerking the handles 3 downwards. The stops 30 may consist of a transverse bar welded to the main framework.