baber/WOPTO huggingface dataset:
Patent GB-631112-A (GB)
Title: Improvements in and relating to hydraulic operation of a machine tool
IPC: B23Q5/26
Filed: 1946-07-30
Abstract: 631,112. Boring and drilling-machines. LE MAIRE TOOL & MANUFACTURING CO., and HARDING, L. V. July 30, 1946, No. 22645. [Class 83 (iii)] [Also in Group XXIX] A machine-tool having a rotating spindle 30, Fig. 4, connected to a plurality of parallelyarranged hydraulic rams 108, 109, for providing axial movements, includes a pump and automatically actuable valve means whereby a hydraulic circuit provides a basic operating cycle comprising rapid approach, feed at reduced speed, and rapid return. An electric motor 21, Fig. 2, on an adjustable mount 22, has belt-drive 25 to a shaft 29 which drives a constant volume hydraulic pump in the casing 20 and a gear which meshes with a gear 74 to drive a female splined housing 75 in which the splined end 86 of the spindle 30 is free to slide. A reciprocating spindle housing 85 is secured to a cross-head 31 which carries a shaft 35 having control dogs 36, 37, 38, adjustably mounted thereon. A manual operating lever 40 for a four-way control valve 42 has a pivot 47 connected by links 45, 46, to solenoids 43, 44. A limit switch 51 is closed by the dog 36 when the spindle 30 is retracted and the machine is in the neutral position, i.e. no liquid is being supplied to, or exhausted from, the rams. Movement of a starter switch 50 actuates the solenoid 43 to move the valve 42 into the rapid approach position in which liquid exhausted from the ram cylinders is caused to join that being supplied to the rams by the pump. This continues until the dog 37 contacts the valve 42 to move it to the feed position in which liquid from the cylinders is exhausted through an adjustable metering flow controlvalve. When the dog 38 closes the limit switch 52, the valve 42 is moved to the return position in which liquid is supplied to the underside of the ram pistons and discharged from the upper side direct to exhaust. An adjustable relief valve is provided. Neutral position of the valve 42 normally follows the return stroke and precedes the rapid approach but can also be made to follow the feed stroke if a dwell is required. The gear chamber 60 has a removable cover 61 and is filled with lubricant.
Patent GB-890846-A (GB)
Title: Improvements relating to devices for producing micro-wave energy pulses of required time duration
Inventor: BALDOCK GEORGE SEYMOUR
IPC: H03K5/04
Filed: 1959-07-02
Abstract: 890,846. Pulsing radio frequencies. FERRANTI Ltd. June 30, 1960 [July 2, 1959], No. 22677/59. Class 40(5). [Also in Group XL(b)] Very short microwave pulses are produced by applying longer pulses, e.g. from a magnetron, to one of two waveguide or other transmission lines 1, 4 connected by a pair of 3db directional couplers 7, 8 so that normally all energy passes to a dummy load 15 terminating one line, then shortening in turn by control pulses the transmission time in each line by an odd number of half wavelengths so that energy is diverted to an antenna or other load connected to the other line for the short time interval between the leading edges of the control pulses, the later control pulse directing energy supply again to the dummy load. As shown the waveguides 1, 4 may each comprise two sections 1, 2 and 4, 5 each coupled by a 3db coupler 3, 6 and each terminated by reflecting short circuits 11, 12, 14, 16 such that energy is wholly directed into the second sections 2, 5. Further, the sections are both traversed at an odd number of quarter wavelengths from the short circuits by discharge tubes 18, 17 fired in turn by the control pulses to provide short circuits instead at the discharge tubes. The transmitted output pulse may be much shorter than the recovery time of the discharge tubes. In a modification a phase shifter is inserted in each of a pair of directionally coupled transmission lines and each in turn made to give a 180 degrees phase shift by control pulses.
Patent GB-1344382-A (GB)
Title: Manufacture of silicon mouldings
IPC: H05B6/22
Filed: 1971-04-19
Abstract: 1344382 Moulding silicon CONSORTIUM FUR ELEKTROCHEMISCHE INDUSTRIE GmbH 19 April 1971 [28 Feb 1970] 22722/71 Heading B5A To mould optical elements of silicon for use in infra-red transmission, the silicon is melted by inductive heating, under the protection of gas inert to silicon in a moulding 4 of sintered quartz lining a vessel 1, and is subsequently cooled within the moulding 4. A heated boss 6, also covered by a moulding of sintered quartz defines the inner wall of the article. Cooling of the melt is effected by withdrawing the vessel 1 from the heating coil 8 at a speed of 0À5 to 2 mm./minute. A tube 9 surrounding the vessel contains the inert gas, which is preferably 10% v/v H 2  in argon. The vessel 1 may be of copper, silver, quartz or aluminium oxide, and is water coolable to assist solidification of the melt.
Patent GB-893723-A (GB)
Title: Cyclopentanophenanthrene derivatives and process for their production
IPC: C07J75/00
Filed: 1958-07-16
Abstract: The invention comprises 11a -methyl-11b -hydroxy steroids of the general formula <FORM:0893723/IV (b)/1> wherein X is a D 4 : 5 bond or a saturated 4 : 5 a -linkage R is keto, or a - or b -hydroxy or acyloxy, R1 is keto, b -hydroxy or acyloxy, or b -hydroxy together with an a -methyl group, the acyloxy groups being derived from hydrocarbon carboxylic acids of less than 12 carbon atoms, with the proviso that R1 is not keto when R is keto; also 3-n-pyrrolidyl-11a - methyl - D 3,5 - androstadien-11b -ol-17-one and the corresponding 17-methyl-17b -ol compound, together with a process for the preparation of compounds of the above general formula by reacting the corresponding 11-keto compounds with methyl lithium, preferably under nitrogen and in ethereal solution.  Detailed examples illustrate the invention and include the preparation of the acetate, propionate cyclopentylpropionate and benzoate esters.  11a  - Methyl - D 4 - androsten - 11b  - ol - 3, 17 - dione required as an intermediate is prepared by reacting 3, 17 - bis - ethylenedioxy - D 5 - androsten-11-one with methyl lithium and treating the resulting 11a -methyl-3,17-bis-ethylenedioxy-D 5 -androsten-11b -ol with p-toluene sulphonic acid in acetone or with acetic acid.
Patent GB-385244-A (GB)
Title: Tool for pointing masonry
IPC: E04F21/165
Filed: 1932-08-17
Abstract: 385,244. Wall-pointing tools. ADAMS, J. A., 13, Stuart Road, Kilburn, London. Aug. 17, 1932, No. 23051. [Classes 61 (i) and 61 (ii).] Fixing by self-grip sockets and tangs. -A wall-pointing tool has the pointed end 2 of the blade 1 bent over at rightangles and the rear end 3 doubled on itself forming a spring tongue to retain the blade in a recess 5 in a shank 4 tanged at 6 to receive a wooden handle.
Patent GB-337050-A (GB)
Title: Improvements in or relating to high frequency electrical systems employing piezo-electric devices
IPC: H03H9/54
Filed: 1929-07-26
Abstract: 337,050. Robinson, J. July 26, 1929. Thermionic amplifiers; filter circuits.-A selective system for a radio receiver comprises a resonant circuit with a piezo-electric crystal of the same natural frequency in parallel and means for transferring received energy of the frequency to which the crystal responds to a following element of the receiver. The Figure shows two circuits 11, 12 fed with the received energy arranged to form phase opposed inputs to valve 17 with a piezo-electric crystal 13 in parallel to the circuit 11 so that at the resonant frequency of the crystal the balance of energy is not maintained. According to the Provisional Specification a single circuit may be employed with an impedance in series with the crystal the voltage developed across the impedance being applied to the valve. Specification 258,946 is referred to.
Patent GB-957500-A (GB)
Title: Improvements in or relating to mounting means for rails
IPC: E01B9/28
Filed: 1959-07-06
Abstract: 957,500. Fastening railway rails. E. M. LEWIS. Oct. 6, 1960 [July 6, 1959], No. 23112/59. Heading E1G. In a device for flexibly mounting a railway rail on a support 4 by means of a clamping plate 4 a rubber pad 6 is provided between a portion 4a of the clamping plate 4 and the flange of the rail 1 to allow lengthwise movement of the rail 1 relative to the support 3. The portion of the clamping plate 4 which bears on the support 3 is provided with a central portion 4g, which normally rests on the support 3 and with two end portions 4f which in the unstressed condition of the plate 4 are clear of the support 3 but engage the support 3 when the plate 4 is stressed to secure the rail 1 in position. The plate 4, Fig. 2, is arched at 4h between the central and end portions 4g, 4f. The pad 6, Fig. 7 (not shown) may be provided with a portion extending downwardly over the edge of the flange of the rail 1. Specification 854,063 is referred to.
Patent GB-815619-A (GB)
Title: Improvements in or relating to the separation of scrap steel from slag
IPC: B03C1/00
Filed: 1956-07-27
Abstract: 815,619. Magnetic separation. NEWELL & CO. Ltd., E., and HOWDEN, P. July 25, 1957 [July 27, 1956], No. 23211/56. Class 117 A method of separating stray or scrap steel from basic slag comprises feeding the slag in a thin wide stream over a magnetic separator of corresponding width, removing the slag that has passed the separator by a reversible conveyer, interrupting the feed until the conveyer has discharged all slag that has passed the separator, cutting off the separator, removing the collected steel thus released from the separator by reverse operation of the conveyer, and then resuming feeding of the slag with the separator in operation and the conveyer discharging in the original direction. As shown in Figs. 1, 2, plant for carrying out the method comprises a shoot 2 for receiving raw slag which is transferred into a wide base hopper 6 by means of a skip elevator 4, a pan or apron feeder 7 then feeding the slag in a thin wide stream to the inclined surface 8 of a multiple electromagnetic separator 9 Pieces of steel, or slag containing steel, are retained and the remainder of the slag passes on to a reversible plate, belt, or scraper conveyer 10 of which the end 10A discharges into a jaw crusher 12, the crushed product then passing via a jigger feeder 13 to a conveyer 14 leading to a grinding plant. When sufficient material has been collected by the separator to make further extraction of steel doubtful, the feed of raw slag to the separator is cut off and, after all the slag on the conveyer has passed to the crusher, the conveyer is reversed. The separator power supply is then cut off and the collected steel is released on to the conveyer 10 which discharges the steel at the end 10B for return to the steel works. Feeding of the slag with the separator in operation is then resumed and the conveyer again made to discharge at the end 10A. The feeder 7, the conveyer 10 and the separator may be push-button controlled by an operator on a platform 15. In the modification shown in Fig. 3, a grading machine 19 of the live-roll grizzly type takes out of the slag stream all smalls of both slag and steel, the oversize slag that passes a separator 18 being discharged into a crusher 20 by a reversible conveyer 21. The material taken out by the grading machine falls on to a belt conveyer 23 discharging on to a conveyer 25 which also receives the crushed material from the crusher 20. The conveyer 25 feeds a secondary crushing plant where further extraction of steel takes place before the slag is crushed to prepare it for grinding.
Patent GB-406033-A (GB)
Title: Improvements in or relating to black finishing metal surfaces
IPC: C23C8/42
Filed: 1932-08-19
Abstract: Chromium surfaces are treated with a cyanide at a high temperature for a period of time sufficient to produce a hard and durable black finish.  The process is applicable to chromium articles or to articles having a chromium surface plated on an iron, steel, copper, nickel, or alloy base.  The articles may be immersed in a bath containing a fused cyanide, e.g., a bath containing an alkaline earth cyanide or at least 30 per cent of an alkali cyanide at a temperature of from 700-900 DEG  C.  The treatment of a mild steel bar is described, the bar being preferably casehardened, and then plated with chromium, immersed for 20 minutes at 860 DEG  C. in a bath containing 45 per cent sodium cyanide, 35 per cent sodium carbonate, and 20 per cent sodium chloride, and finally quenched in cold water. A chromium-plated copper bar may be treated for 30 minutes at 825 DEG C. in a bath containing 30 per cent sodium cyanide and 70 per cent sodium carbonate and sodium chloride.
Patent GB-388072-A (GB)
Title: Improvements in the manufacture of printing inks
IPC: C09D11/02
Filed: 1931-08-19
Abstract: A water-in-oil emulsion, suitable for use as a vehicle for printing-ink, is prepared by incorporating water in a mineral oil, e.g. kerosene or light or heavy lubricating-oil, with wool grease as an emulsifying agent, the proportion by weight of oil to wool grease being ten or more to one.  An auxiliary emulsifying-agent such as a water-soluble or water-in-soluble soap may be employed, the soap being formed, if desired, during the process of adding an alkali and a fatty acid.  According to examples (a) a mixture of equal parts of crude wool grease and spindle oil is dissolved in lubricating-oil, water is stirred in, and carbon black and induline in oleic acid are added; (b) a small amount of calcium stearate may be added to the mixture of example (a) as an auxiliary emulsifying-agent; (c) crude wool grease and tall-oil (a source of oleic acid) are heated together and caustic potash added, further tall-oil being then added to form an emulsifying-agent which is mixed with kerosene, water, and pigments.
Patent GB-775373-A (GB)
Title: Thermoplastic laminate
IPC: B29C70/00
Filed: 1954-08-16
Abstract: Sheets for use in laminates comprise either a mechanical mixture of a synthetic rubber with polystyrene or with a styrene-acrylonitrile copolymer, or a copolymer of a synthetic rubber with styrene or with a styrene-acrylonitrile mixture.  The synthetic rubber may be a copolymer of butadiene with styrene or acrylonitrile.  An aqueous emulsion of styrene or a styrene-acrylonitrile mixture is mixed with an aqueous emulsion of a butadiene-styrene copolymer synthetic rubber, and the mixture is heated with agitation under reflux. Alternatively an aqueous emulsion of styrene or styrene-acrylonitrile mixture may be polymerized with the aid of a catalyst, and the resulting latex mixed with an aqueous emulsion of synthetic rubber. The emulsion resulting from either procedure may be precipitated and dried and the dried product kneaded or milled with additional polystyrene, or styrene-acrylonitrile copolymer.  In a further modification, an emulsion of a styrene-acrylonitrile mixture is polymerized with a butadiene-styrene copolymer rubber latex.  The resulting latex is mixed with a styrene-acrylonitrile copolymer latex, precipitated, and dried.
Patent GB-1065666-A (GB)
Title: Improvements in or relating to methods and devices for generating a curve
IPC: F16H35/16
Filed: 1964-06-09
Abstract: 1,065,666. Electric analogue calculating. REGIE NATIONALE DES USINES RENAULT. June 9, 1964 [June 13, 1963], No. 23937/64. Addition to 1,033,101. Heading G4G. Apparatus for generating a curve from data comprising the co-ordinates X A  X B  X T  Y A  Y B  and Y I  of the limit points A and B of each elementary arc and of the intersection point T of the tangents to the arc at A and B, is characterized by the use of the parametric equations: where # = # + k (#) l (α), # is a parametric angle variable between 0 and #/ 2 , α is the angle between the two tangents, k (#) is a function of #, and I (α) is a coefficient varying from 0 to 1 as α varies from 90 to 180 degrees. The apparatus is generally the same as that in Specification 1,033,101 except for the slight modification of the parametric equations, and Fig. 5 shows part of the apparatus for calculating the X coordinate. A motor 126 applies the angle  # to the shaft 70 of two resolvers 125 and 125<SP>1</SP>, which may comprise transformers with rotating primary windings. Resolver 125 is supplied with an input e - #x, where e = X B  - X T  and #x is the difference between the actual and the required value of X A , and its output is (e - #x) (1 - cos #) which is the first term of the equation. A cam 72 on shaft 70 moves a lever 73 in accordance with k (#) and this is multiplied by l (α) by means of levers 74 and 75, the pivot point of lever 74 being adjusted according to the value of α by a motor 80. The casing 71 of resolver 125<SP>1</SP> is rotated by the product k (#) l (α) thereby giving the angle .w between the rotor and the casing. The input to the resolver is f = X T  - X A  and its output is f sin #, the second term of the equation.
Patent GB-388677-A (GB)
Title: Improvements in or relating to brushes
IPC: A46B3/00
Filed: 1932-08-27
Abstract: 388,677. Fixing bristles in brushes. HAMILTON & CO. (LONDON), Ltd., 116, Clerkenwell Road, London, and TIMMIS, A. H., 101, Harrow View, Harrow, Middlesex. Aug. 27, 1932, No. 24028. [Class 19.] Brushes with bristles 2, Fig. 2, set in rubber composition 3, held in position by a ferrule 4 surrounding the setting and mounted on a handle, are characterized by the ferrule having a cross-bar or bars 5, Fig. 3. The bar or bars are made integral with the ferrule, and may intersect. The ferrule may be secured by a screw or the like.
Patent GB-335014-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs of the anthraquinone series
IPC: C09B5/26
Filed: 1929-08-07
Abstract: 335,014. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Aug. 7, 1929. Anthraquinone vat-dyes are prepared by treating with acid condensing agents the products obtained by the action of aminoanthraquinones on 5: 8-dihalogen-1 : 2-benzanthraquinones (see Specification 834,565). In examples the condensation products of 5 : 8-dichlor-1 : 2-benzanthraquinone with (1) 1-aminoanthraquinone (Example 4 of Specification 334,565); (2) 1-amino-5-benzoylaminoanthraquinone and (3) 1-amino-4-benzoylaminoanthraquinone are heated with a solution of aluminium chloride in pyridine; the products dye cotton in brown shades.
Patent GB-221960-A (GB)
Title: Improvements relating to traps and trap nests for animals, birds and poultry
IPC: A01K31/16
Filed: 1923-09-28
Abstract: 221,960. Widdicombe, E. P. Sept. 28, 1923. Trap nests.-The sliding door c to the entrance of a trap nest a, as it is raised from the set position by the animal entering, positively displaces a catch so that the door drops and closes the entrance. This door has two screws, nails, pegs, or the like d, e, spaced one above the other and co-operating with a catch h pivoted on a rod q journaled in fixed parts of the nest front so that when the door is raised by the animal the lower peg d contacts with the inclined face i of the catch and forces it out of the path of the upper peg e which rests on the catch in the set position of the door. The latter thereupon drops and closes the entrance. To retain the door permanently open it is raised until the lower peg rests on the top of the catch, and the entrance opening may be varied for animals of different size by adjusting the position of these pegs on the door. The top peg may be replaced by a notch, and the door with its guideways and release mechanism may be made as a separate unit for applying to any box, shed, or enclosure.
Patent GB-1018384-A (GB)
Title: Improvements in and relating to semi crystalline glass
IPC: C03C10/00
Filed: 1963-06-18
Abstract: A semi-crystalline glass having a low coefficient of expansion is made from SiO2, Al2O3, Li2O, 8-19% by weight of a fluxing agent which includes both B2O3 and the metal oxide of magnesium and/or zinc and a small amount of a nucleating agent, the glass containing crystals of the Li2O, Al2O3, SiO2 system embodied in a glassy matrix of Al2O3, SIO2, and the fluxing agent.  The ratio of B2O3 to metal oxide is preferably 0.6-2.2: 1.  The constituents of the glass batch are preferably within the ranges 58.66% SiU2, 13.22% Al2O3, 2.5-5% Li2O, 4-7% B2O3, 3-7% MgO and/or ZnO; 1-4% TiO2.  The batch is melted at 2800 DEG  F. (1535 DEG  C.) to form a glass which is then formed into the desired shape, the so glazed article being cooled, then reheated to a temperature of 1600-1800 DEG  F. (870-980 DEG  C.) to promote the formation of crystals, and then cooled.  The crystal phase may be about 46% by weight of the finished article.  In place of TiO2 Cr2O3 or a phosphate may be used.
Patent GB-1465879-A (GB)
Title: Producing steel strip electro coated with metal
IPC: C21D1/70
Filed: 1975-06-05
Abstract: 1465879 Electrolytic cleaning; plating of steel strip HOOGOVENS IJMUIDEN BV 5 June 1975 [5 June 1974] 24234/75 Heading C7B Prior to metal electro-coating e.g. electrolytic tinning steel strip which has been hot-rolled, optionally pickled and rinsed, then cold-rolled e.g. while being cooled by a lubricant, the cold-rolled  strip is cleaned by an electrolysis bath, e.g. electrolytically degreased in a bath containing Na 2 SiO 3  and less than 50 ppm Cl<SP>-</SP>, rinsed, tightly coiled or packed, annealed, e.g. at 650C in argon, and skinpassed, wherein the rinsing bath or a subsequent bath contains at least one conditioning substance, e.g. urea, thiourea, thiosemicarbazide, ammonium thiosulphate and borax, which is absorbed on the strip surface and hinders or prevents surface graphite formation by the carbon within the steel in the annealing. Cleaning may be effected by passing the strip through a dip bath, brushing it, passing it through the electrolysis bath and brushing it again. The strip may be alternately charged cathodically and anodically in the cleaning bath, leaving with an anodic charge.
Patent GB-747194-A (GB)
Title: Improvements in or relating to tubes or the like and to the manufacture thereof
Inventor: BAYLY CHARLES
IPC: B21C37/12
Filed: 1953-09-02
Abstract: 747,194. Making composite helically-joined tubes. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 23, 1954 [Sept. 2, 1953], No. 24245/53. Class 83 (2). [Also in Group XXVIII] A method of manufacturing a tube comprises helically-winding a plurality of layers of strip metal, e.g. heat-treated aluminium alloy or steel alloy, about a mandrel, the abutting edges of the metal in at least one layer being so displaced with reference to the abutting edges of the metal in a preceding layer as to ensure no right-line path from the inside to the outside, of the tube between abutting edges of the layers, bonding the assembly together by means of bonding material separating one layer from the next, and then removing the mandrel. The bonding material, e.g. soft solder or a synthetic resin, may be applied either before helically winding the strip on the mandrel or during winding. When the metal is not unduly affected by heat the bonding may be effected by low-temperature brazing. The helix angle may be the same for each layer of strip and alternate layers may be of opposite sense. Alternatively, several layers may be wound upon each other in the same sense with their abutting edges displaced and then an equal number of layers may be wound upon these layers but in the opposite sense and also with their abutting edges displaced. To improve the wetting of the strip by the adhesive it is shot blasted on both sides and degreased prior to winding.