baber/WOPTO huggingface dataset:
Patent GB-617704-A (GB)
Title: Improvements relating to controlling means for a two-phase alternating electric current servo motor
IPC: H02P23/10
Filed: 1946-10-21
Abstract: 617,704. Automatic control systems. ROTAX, Ltd., and HAMILTON, R. F. G. Oct. 21, 1946, No, 31188. Drawings to Specification. [Class 38 (iv)] [Also in Group XXXVII] A control system for a two-phase A.C. servomotor, of the type in which first and second stator phase windings are connected to constant and variable voltage sources respectively, the speed and direction of rotation of the motor being dependent upon the current supplied to the second phase winding, is provided with current-restricting means in association with the first phase winding which are regulated by means responsive to current derived from the circuit of the second phase winding, so as automatically to reduce the current supplied to the first phase winding when the current in the second phase winding is zero, thereby preventing overheating of the motor by idle current and accidental operation of the motor when it should be at rest. The first phase winding may be connected in series with a coil of a choke the core of which is adapted to be saturated by rectified current derived from the supply to the second phase winding. Alternatively, the first phase winding may be provided with a variable series resistance which is automatically controlled by an electromagnet energized by current derived from the second phase winding circuit.
Patent GB-864072-A (GB)
Title: Improvements in or relating to apparatus for measuring a property of gas-borne dust or of a gas stream carrying dust
IPC: G01N21/53
Filed: 1958-02-25
Abstract: 864,072. Photo-electric measurement of dust in a gas stream. CENTRAL ELECTRICITY GENERATING BOARD, CROSSE, P. A. E., SNOWSILL, W. L., and LUCAS, D. H. May 25, 1959 [Feb. 25, 1958], No. 31283/59. Divided out of 864,071. Drawings to Specification. Class 40(3) [Also in Group XX] The Specification is substantially the same as Specification 864,071 but the claims relate to apparatus for measuring a property of gas-borne dust or of a gas stream carrying dust.
Patent GB-635315-A (GB)
Title: A sheet structure for the replacement of wooden boards
IPC: E04C2/38
Filed: 1947-11-26
Abstract: 635,315. Fencing. KEDVES, J. Nov. 26, 1947, No. 31344. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 10, 1948.] [Class 451 [Also in Group X] A timber substitute comprises reeds c arranged between longitudinal wooden lathes a and held in place by transverse lathes b. The ends b<SP>1</SP> of some of the transverse lathes may project beyond the longitudinal lathes to provide for the connection of adjacent units.
Patent GB-1119876-A (GB)
Title: Improvements in or relating to vacuum cleaner nozzle
IPC: A47L9/06
Filed: 1966-07-12
Abstract: 1,119,876. Vacuum cleaner nozzles. SIEMENS-ELECTROGERATE G.m.b.H. 12 July, 1966 [17 July, 1965], No. 31345/66. Heading A4F. A vacuum cleaner nozzle comprises a nozzle body 1 in which a retractable brush strip 10 is movably mounted, the brush strip being attached to a spring loaded plate 11 which can be urged by an adjusting wheel 15 against the action of springs 12 to extend the brush strip 10 from the nozzle body 1. Two adjusting wheels may be provided which are rotatably mounted on a common axis 13 and are each provided with a foot operated lever and with a recessed rim or flat portion which bears on the plate 11. A member 2 which is attached by screws to the body 1 is provided with a plurality of suction recesses 5, 6, 7 and with apertures (18) (Figs 1 and 2, not shown) through which air is allowed to flow when the brush strip 10 is in its retracted position, the air flow being permitted by shutters (20) (Figs. 3 and 4, not shown) rotatably mounted on the axis 13.
Patent GB-160253-A (GB)
Title: Improvements in planes for aircraft
IPC: B64C3/54
Filed: 1919-12-15
Abstract: 160,253. Woods, F. Dec. 15, 1919. Planes, construction of; steering, balancing, and regulating altitude. - The span of the plane is made variable by the provision of sectors b2, which are rotatable on pivots d and pass freely in and out of the double surface of the planes a. Cranks c, which are cast in one piece with the apex of the sectors, are connected by wires f to a lever e so that the sectors may be extended or retracted simultaneously. The lever may be controlled by a ratchet or toothed quadrant device. In the case of multiplane machine, the sectors of all the planes may be connected to one central leverage.
Patent GB-1110324-A (GB)
Title: Process for the production of expanded mouldings from polyester moulding materials
IPC: C08J9/08
Filed: 1965-07-23
Abstract: Expanded mouldings are obtained by curing an emulsion comprising specified proportions of (a) an unsaturated polyester, (b) a monomeric vinyl compound or mixture of monomers capable of being polymerized on the polyester, (c) water, (d) an organic peroxide catalyst, e.g. benzoyl peroxide, (e) an expanding agent, e.g. an ammonium or alkali or alkaline earth metal carbonate or bicarbonate capable of evolving carbon dioxide on the addition of a solution of (f) an organic acid, e.g. acetic, propionic, acrylic or maleic acid, or an anhydride thereof and (g) a tertiary amine accelerator, e.g. N,N-dimethylaniline or N,N-dimethyl-p-toluidine, in a solvent which is also soluble in the unsaturated polyester, to the above emulsion. A suitable emulsifier, e.g. zinc stearate, may be incorporated in the emulsion.  The unsaturated polyester is prepared from an ethylenic dicarboxylic acid, preferably fumaric acid, or the anhydride thereof, optionally in the presence of a saturated dicarboxylic acid such as adipic acid, and one or more dihydric alcohols selected from ethylene glycol, diethylene glycol, propylene glycol, di-propylene glycol, 1,3-butane-diol and di-hydroxymethyltricyclo(5,2,1,02.6) - decane and may be modified by the addition of a mono- or poly-basic carboxylic acid or an alcohol.  The preparation of unsaturated polyesters of specified physical properties by condensation of (1) fumaric acid, phthallic acid anhydride, glycol, diglycol and hydroquinone; (2) fumaric acid, tall resin, dipropylene glycol, dihydroxymethyltricyclo[5,2,1,02.6]decane, octanol and hydroquinone; or (3) fumaric acid, adipic acid, diglycol and hydroquinone, is described.  The preferred monomeric compound is styrene although mixtures of styrene with another monomer such as acrylonitrile, methacrylic ester, 2,3-dichlorobutadiene or vinyl acetate are also specified.  Conventional additives such as finely divided silicic acid, antimony trioxide, carbon black, cellulose, chloroparaffins, cellulose acetobutyrate and plasticizers such as phthalic esters or polyglycols may also be incorporated in the emulsion.
Patent GB-915914-A (GB)
Title: Improvements in or relating to hoist structures
IPC: E04H12/26
Filed: 1960-09-14
Abstract: 915,914. Pit-head hoist structures; fair-leads. GUTEHOFFMUNGSHUTTE STERKRADE A.G. Sept. 14, 1960 [Sept. 17, 1959], No. 31608/60. Classes 78 (3) and 78 (5). A hoist structure for use at a pit-head comprises a substantially H-shaped support 1, 2 and two head gear pulleys 7, 8 arranged one above the other with their axes extending through the upper side members 2. The support is inclined so that the pulleys 7, 8 are displaced horizontally from one another through a distance corresponding to the distance between the cables which extend upwardly from the mine cages to the pulleys. The support is provided with vertical legs 3, 4, and with servicing platforms 11, 12, 13. Two pulley blocks 14 are supported from the platform 13 and are movable vertically to positions alongside the pulleys 7, 8. In a modification, Fig. 3 (not shown), two identical oppositely-inclined and interconnected supports are provided and support two pairs of head-gear pulleys.
Patent GB-408254-A (GB)
Title: Process for dephosphorising steel
IPC: C21C7/064
Filed: 1932-07-29
Abstract: In a process for dephosphorizing steel in an induction furnace, the molten steel is treated therein with a molten and very fluid basic slag which covers and protects the surface of the metal against oxidation by the air substantially from the beginning of the operation, an intense agitation of the metal being produced by the electric field.  Slags comprising silica, lime iron oxide and a flux such as fluorspar, sodium or potassium salts &c. are referred to and in an example a slag comprises 3 per cent of silica, 60 of lime, 35 of iron oxide and 2 of fluorspar. Specification 405,633 is referred to.
Patent GB-316436-A (GB)
IPC: H02H7/06
Abstract: 316,436. Electrical Improvements, Ltd., and Grant, L. C. July 25, 1928. Protective or safety devices, auxiliary.- Alternating current dynamo-electric machines are protected against the effects of heavy sudden overloads on the stator B (which by reaction may cause a dangerous surge of high voltage in the D.C. rotor winding C supplied from the exciter E) by damping out or bye-passing the surge in the D.C. circuit or causing it to modify the rotor current circuit by introducing resistance. In the arrangement shown, the reactive surge in the D.C. exciting circuit causes the operation, through the current transformer F, of a relay G<1> which, momentarily, withdraws a shortcircuit from a series resistance H in the excitation circuit. In modifications, condensers or condensers and chokes are arranged in the excitation circuit to bye-pass the A.C. surge on the D.C. circuit.
Patent GB-869948-A (GB)
Title: Process for producing glutamic acid from fermentation broth
IPC: C12P13/14
Filed: 1959-09-17
Abstract: Glutamic acid or its salts are recovered from a germination broth by separating the cells from the broth, adding a glutamic acid solution to the filtrate, adjusting its pH to approximately 3,0, crystallising and separating glutamic acid or a salt thereof from the broth and acidifying and reacting the filtrate to convert residual carbohydrates to huminous substance and pyroglutamic acid and glutamine to glutamic acid or salts thereof. After filtration, the huminous substance is advantageously added to the fermentation broth in the next operation to act as a filter acid, and the filtrate after removal of huminous substance is advantageously added to the filtrate obtained after removal of the cells from the fermentation broth in the next operation.
Patent GB-159380-A (GB)
Title: Process and apparatus for treating magnetic or weakly magnetic iron ore containing magnetic ferrous sulphide as a secondary constituent
IPC: B03C1/015
Filed: 1919-12-18
Abstract: 159,380. St÷ren, R.., and Johanson, R. Dec. 18, 1919. Treating ores to facilitate concentration.-Magnetic iron ores containing pyrrhotite are heated in the presence of a reducing-gas to a temperature of 400-500‹ C., in order to render the ferrous - sulphide constituents permanently non-magnetic, and the product is subjected to magnetic concentration. Hydrogen obtained from an electrolytic decomposition plant is preferablv used. The ore traverses helical channels 2<a>, 2<b> in a rotary furnace in contact with the reducing-gas, which is supplied by a pipe 3 and escapes as water vapour through an opening 4. The partly reduced ore is suspended in water in a trough 5, and passes to a magnetic separator 6, and the concentrate is dried and completely reduced in a second furnace 8. The metal is finally melted in an electric &c. furnace directly connected with the furnace 8.
Patent GB-1187534-A (GB)
Title: Process for preparing 4-Flouro-3-Nitroaniline
IPC: C09B51/00
Filed: 1968-07-03
Abstract: 1,187,534. Fluoronitroaniline. CLAIROL Inc. 3 July, 1968 [2 Nov., 1967; 1 May, 1968], No. 31824/68. Heading C2C. [Also in Division C4] 4-Fluoro-3-nitroaniline is prepared by reacting p-fluoroaniline with a nitrating agent under anhydrous conditions. A mixture of nitric acid and sulphuric acid is a suitable nitrating agent. The reaction mixture may be mixed with cold dilute hydrochloric acid to dissolve and separate the 4-fluoro-3-nitroaniline therefrom, and the required product recovered from this acid solution by making it alkaline.
Patent GB-805817-A (GB)
Title: Process for purifying trichloro-and tetrachlorobutane
Inventor: YOUNG DONALD PETER
IPC: C07C17/395
Filed: 1955-11-08
Abstract: 1:2:3 - Trichloro- and 2:2:3:3 - tetrachlorobutane are recovered from mixtures thereof by contacting such mixtures under adduct forming conditions (in the presence of methanol with or without a non-complexforming solvent) with at least sufficient thiourea (3 mols. per mol. of halohydrocarbon) to convert substantially all the tetrachlorobutane into its adduct, filtering, and recovering substantially pure trichlorobutane from the filtrate by washing with water or distillation. Alternatively, a large excess of thiourea under the same conditions yields a mixture of both adducts, which is treated with water at a low temperature to liberate the trichlorobutane.  The more stable tetrachlorobutane adduct is filtered off and decomposed by steam distillation when the tetrachlorobutane crystallizes in the distillate and is filtered off, a small quantity of trichlorobutane being recovered from the mother liquors.  In an example, the separation of a mixture of 1:2:3-trichlorobutane and 2:2:3:3 - tetrachlorobutane using approximately 5 mols. of thiourea per mol. of tetrachlorobutane is described.  Specification 805,816 is referred to.
Patent GB-901801-A (GB)
Title: Protective leg garment
IPC: A41D3/06
Filed: 1959-09-18
Abstract: 901,801. Leggings. KENT, H. F. Sept. 18, 1959 [Oct. 9, 1958], No. 31898/59. Class 141. A tubular legging 25 having an elastic supporting strip 27 attached to the front of its upper edge and an elastic loop 29 attached to the sides of its lower edge for engagement under the wearer's instep, is provided with a pair of divergent non-elastic fabric strips 26 extending between and attached to the points of attachment of the members 27, 29. The strips 26, 27 and loop 29 may be attached to the legging by snap fasteners 31, 32 or by sewing. The supporting strip 27 has a hook 28 at its free end for engagement over a waistbelt &c. The legging may be made of a synthetic resin or waterproofed paper.
Patent GB-447056-A (GB)
Title: Improvements in or relating to flushing-cisterns
IPC: E03D5/02
Filed: 1934-11-06
Abstract: 447,056. Valves. HOLFORD, H. J., 2, Brookvale Road, Southampton, and STRAY, A. M., 74, Coleman Street, London. Nov. 6, 1934, No. 31926. [Class 135] [See also Group I] In a water-waste-preventer in which a piston 38 operating in a cylinder supports a dischargevalve 40, the latter is raised when water is admitted from the supply-line, on the operation of a valve 18, by a pipe 45 passing through an opening in the cylinder-wall below the piston, an aperture 44 being provided in the cylinderwall above the piston to permit the latter to rise and a byepass vent 48 being provided in the piston. The valve is carried by a rod 25 screwed into a boss on the piston and pass through a gland 23 in the bottom of the cylinder ; the latter is supported by a casing having slots 34 arranged to impart a vorticular flow to the flush. The valve is normally maintained seated by a spring 42 arranged between the piston and the roof of the cylinder. A pipe 37 provides an outlet for excess water in the event of continued depression of the plunger of the actuating valve 18.
Patent GB-1386850-A (GB)
Title: Hydrocarbon separation process
IPC: C10G25/03
Filed: 1972-07-07
Abstract: 1386850 Separating hydrocarbons by adsorption UNIVERSAL OIL PRODUCTS CO 7 July 1972 [8 July 1971] 31927/72 Heading C5E Multi-branched paraffins are selectively adsorbed from a mixture which also contains singly-branched and/or normal paraffins using an adsorbent comprising a type X or Y zeolite containing barium cations and an amount of water equivalent to 1-10 wt. per cent of the zeolite as measured on a volatile-free basis. The adsorbent can comprise a clay binder and the zeolite can also contain sodium and/or potassium cations. The adsorption can be carried out at up to 300‹ C. and up to 69 atm. using a simulated moving bed or a batch-type operation. The desorption can be carried out under similar conditions as the adsorption using nitrogen or oxygen as a purge gas or a normal, branched or cycloparaffin having a boiling point different from that of the feed. In an example 2,2-dimethylbutane and 2,3-dimethylbutane are selectively adsorbed in the liquid phase from a mixture which also contains 3-methylpentane, normal hexane, normal pentane and isopentane.
Patent GB-468921-A (GB)
Title: Manufacture of perchlorethylene
IPC: C07C17/00
Filed: 1936-11-23
Abstract: Perchlorethylene is made by passing the vapours of tetrachlorethane with chlorine over a heated contact material such as fragments of porcelain or glass, porous materials such as charcoal or silica gel, or catalysts promoting addition of chlorine or splitting off of hydrogen chloride, e.g. chlorides of bivalent metals such as copper, advantageously together with porous materials.  Using such catalysts temperatures of 150--300 DEG  C. suffice; with contact materials alone 300--450 DEG  C. is best. Increased or reduced pressures may be employed.  In examples, active charcoal or bone chamber impregnated with 30 per cent of CuCl2 is used as contact material, temperature being 300--320 or 150 DEG  C. respectively.
Patent GB-1199535-A (GB)
Title: Low-Pressure Sodium Vapour Discharge Lamp
IPC: H01J61/74
Filed: 1968-07-05
Abstract: 1,199,535. Metal-vapour lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 5 July, 1968 [10 July, 1967], No. 32169/68. Heading H1D. In a low-pressure sodium-vapour discharge lamp containing sodium not in vapour form in the operating condition of the lamp, and having the discharge tube mounted within an outer envelope exhausted to 10-<SP>3</SP> torr or below, substantially the whole of the non-vapourized sodium is contained in an appendage which lies entirely outside of, but opens into, the discharge space, the condition V > 0À5A#A being satisfied, where V is the volume of the protuberance in cm<SP>3</SP> and A is the area, in cm<SP>2</SP>, of the orifice between the protuberance and the discharge space; the appendage is disposed in the vicinity of an electrode of the lamp, is heated only by heat evolved in the lamp, and has no conductive connection to an electrode of the lamp in the inoperative condition. As shown, Fig. 6, the sodium may be contained in a re-entrant portion 54 of the discharge tube 51, the closed end of the protuberance being adjacent, and heated by, the electrode 53. In the embodiment of Fig. 4, in which the outer envelope is not shown, the protuberance 23 is so twisted with respect to the plane p which passes through both the axis of the discharge tube and the orifice 24 of the protuberance, that for any orientation of the lamp, a portion of the protuberance lies below the level of the orifice, whereby to ensure that the enclosed sodium, liquid under operating condition, is prevented from flowing into the discharge space. In further embodiments the protuberance communicates with one limb of a U-shaped discharge tube (Figs. 1 to 3, not shown), and may be in the form of a sodium container connected to the discharge tube by a supply tube (Fig. 5, not shown). The lamp may be manufactured by sealing the protuberance, containing the whole of the sodium required for the lamp filling, to the discharge tube such that it communicates with the latter via an orifice, and heating the protuberance.
Patent GB-1130249-A (GB)
Title: Method and apparatus for producing a round-link chain
IPC: B21L15/00
Filed: 1967-07-13
Abstract: 1,130,249. Broaching. WAFIOS MASCHINENFABRIK WAGNER, FICKER & SCHMID G.m.b.H. 13 July, 1967 [21 July, 1966], No. 32217/67. Heading B3L. The links of a chain are formed by bending round section rod to the shape of the link, pressing the ends of the link together by upsetting tools 4 and electrically welding the ends together, the weld flash then formed being removed by firstly a transverse trimming operation by tools 7, 8, Fig. 1, having straight cutting edges 10, and subsequently a longitudinal trimming operation by tool 16, Fig. 4, having arcuately shaped cutting edges 17. The transverse trimming operation may be carried out while the welding electrodes are still applied to the link, while the upsetting tools 4 hold the link for both trimming operations.
Patent GB-392612-A (GB)
Title: Improvements in combined printing, addressing and calculating machines
Filed: 1931-11-20
Abstract: 392,612. Statistical machines. GLOGAUD, P. J. E., 14, Rue de Douai, Paris.-(Assignee of Souze, P. A. ; 13, Rue de Valmy, Charenton, France.) Nov. 20, 1931, No. 32265. Convention date, Nov. 20, 1930. [Class 106 (i).] In a combined printing, addressing, and calculating machine for the production of receipts and similar work in conjunction with list-sheets or the like, the address plates are provided with perforations representing figures, and each plate passes through a reading device comprising rows of needles 92 mounted in a block 94 which is lowered and released by a cam when the plate in reading position is one previously selected for printing. The needles which encounter perforations engage rods 98 adapted through wires 104 to project needles 107 into the paths of side-byside racks 115, which are raised against the action of springs 118 by rocking arms 119, and subsequently fall to an extent depending on the position of the projected needle in the corresponding row. Each rack rotates a pinion 113 connected by a pinion 112 to a type-wheel 110. Transfer from one wheel 110 to the next is effected by a pin 128 on the corresponding pinion 112, whereby a lever 122 is rocked to the right and is detained by a plunger 124, which is subsequently released whereupon the arm returns to normal position and a pawl thereon advances the pinion 113 corresponding to the wheel 110 of higher denomination. The group address-plate causes the actuation of a cam which raises a platen against the wheels 110 to print the total on a list-sheet ; total printing is also effected when a list-sheet is full. During the upward movement of the platen a rack fixed thereto turns a ratchet which, during the down stroke, rotates the wheels 110 back to zero and withdraws all the plungers 124 so as to allow the levers 122 to return to normal position.