baber/WOPTO huggingface dataset:
Patent GB-249778-A (GB)
Title: Improvements in and relating to sporting guns
IPC: F41A3/58
Filed: 1925-11-20
Abstract: 249,778. Frommer, R. von Nov. 20, 1925. Addition to 188,251. Breech action, drop-down barrel.-The spring for controlling the operating-lever described in the parent Specification is contained in a tubular casing 4 closed at one end, this closed end being pivoted to the breech body 7 or to a shoe 6 mounted on the breech body. The lower end of the casing has side extensions 8 which embrace the operating lever 1.
Patent GB-474110-A (GB)
Title: Improvements in abrasive wheel and method of making the same
Filed: 1936-10-29
Abstract: Rubber-bonded grinding wheels and the like are made by heating raw rubber until it softens but does not melt, mixing with sulphur and abrasive grains, pressing and vulcanizing.  The rubber may be heated for a number of hours at a temperature of from 100-170 DEG  C., e.g. for 8 hours at 160 DEG  C.  The bond is preferably a hard rubber bond with a sulphur content of 20-50 per cent. Specification 368,902 is referred to.
Patent GB-867064-A (GB)
Title: New derivatives of heparin and processes for their production
IPC: C08B37/10
Filed: 1959-08-28
Abstract: The Specification comprises heparyl substituted ureas having the general formula:- <FORM:0867064/IV (a)/1> in which R represents a heparyl residue and R1 is an alkyl, aryl, or aralkyl group and X is an integer from 1 to 4.  These compounds may be made from heparamine (N-desulpho heparin) which is itself made from heparin by the method described in Specification 863,235, by reacting it with an iso-cyanate of general formula R1-N= C=O where R1 is an alkyl, aryl or aralkyl group.  Specifie products are N-heparyl-N1-n-butyl-urea; N-heparyl-N1-phenyl-urea; N-heparyl-N1-a -naphthyl urea and their alkali metal salts. Reaction may be effected in an aqueous medium, optionally in the presence of an ammonium or alkali metal hydroxide or carbonate, or in a solvent such as iso-propanol.  The substituted urea may be isolated by precipitation with a water miscible solvent in which it is insoluble, such as methanol, ethanol, acetone or dioxan. Alternatively it can be purified by transformation into a quaternary ammonium salt by means of Hyamine 1622, Hyamine 2389, Cequartyl BE, Zephyrol, or an alkyl-dilauryl-dimethyl-ammonium chloride, and recovered by means of an alkali metal salt of a lower fatty acid in aqueous solution such as sodium acetate.
Patent GB-634748-A (GB)
Title: Improvements in or relating to tubular surface heat exchangers
IPC: F28D7/16
Filed: 1947-11-05
Abstract: 634,748. Tubular heat-exchangers. PARSONS MARINE STEAM TURBINE CO., Ltd., and COOK, S. S. Nov. 5, 1947, No. 29529. [Class 64(iii)] In a tubular heat exchanger of the single-flow or multi-flow type in which a bundle of tubes arranged in rows and extending between tube plates is housed within a casing, one fluid flowing through the tubes and a second fluid flowing in one or more passes through the interspaces between the tubes in flow or contraflow to the fluid flowing through the tubes, filling members lying parallel to the tubes are provided in the interspaces therebetween so that the cross-sectional flow area between the tubes is substantially reduced. In one form, Fig. 1a, steel rods or tubes b having one or both ends plugged are provided in the interspaces between the tubes c and may be in contact with all or only some of the tubes. Alternatively, the filling members may comprise flat or corrugated plates f (Fig. 5) disposed between adjacent rows of tubes c or internally ribbed pairs of plates g may be used, the edges of each pair being sealed. Provisions for restraining movement of the filling members along the tubes c are described.
Patent GB-1278773-A (GB)
Title: Photoprinting
Inventor: PAYNTER DONALD WILLIAM
IPC: G03C7/02
Filed: 1968-06-20
Abstract: 1278773 Photo-printing E S & A ROBINSON (HOLDINGS) Ltd 20 June 1969 [20 June 1968] 29538/68 Headings G2A and G2C A method of multi-colour printing comprises passing a web prepared for the production of a multi-colour image by a non silver halide photosensitive system through a photo-printing station, exposing the web by projecting at said station a brief flash of multi-colour light from an original on to the moving web and subsequently treating the exposed web to produce a stable multi-colour image. The systems which can be used include photo-polymerization, dye initiated photopolymerization, dye sensitized dispersion photopolymerization and dye bleach out. The web is coated by e. g. a trailing blade coater, on one or both sides by a dye mixture of e.g. aurine, brilliant cresyl blue and acid fuschine, with oxalmolydic acid as the accelerator and gelatine as the carrier. Black dye may be added as necessary. If solid white is desired in the finished image, a finely dispersed white pigment may be added to the dye stuff mixture. An intermediate drier may be provided. After exposure, some dye mixtures may need to be treated with a mordant bath. The photo-printing station comprises a stationary transparency, a condenser system with heat filter and a xenon flash-lamp. The image may be stationary in space, in which case the web path is planar at the photo-printing station, or the image may be stationary with respect to the web, in which case the web path is curved and the image movement obtained by means of a rotating mirror or prism. Successive images of the same or a different transparency may be found on the web by successive flashes of the lamp. For an opaque web coated on both sides, images may be printed on each side by means of two optical systems.
Patent GB-1039678-A (GB)
Title: Improvements relating to carrying crates for bottles
Inventor: BARTOO OTTO F
IPC: B65D1/24
Filed: 1963-07-25
Abstract: 1,039,678. Bottle crates. VEREENIGING VOOR ZUIVELINDUSTRIE EW MELKHYSIENE. July 25, 1963 [Aug. 1, 1962], No. 29951/63. Heading B8P. A bottle crate with apertures in its side walls has an open work bottom of ribs 1 (Fig. 3, not shown) at 45 degrees to the side walls and dividers 14 parallel to the side walls joined to the bottom at the intersections of the ribs at 2 and to each other. The upper boundary of the dividers 14 and side walls 7 form a wave pattern (Fig. 1, not shown) at the uppermost points of which the dividers are joined to the walls at 13 and to themselves 16 and 17, and opposite the lowermost points of which they are both joined to the base. The wavy edge of the walls has a reinforced rim and large hand holes 9 are provided. In stacked condition lower flanges 4 rest on a rounded upper part 5 and lower rims 3 fall within upper rims 6. The crate is of plastics material cast in a die.
Patent GB-851516-A (GB)
Title: Hydraulic control valve throttling mechanism
Inventor: JUNCK JOHN ARNOLD
IPC: F16K11/07
Filed: 1958-09-16
Abstract: 851,516. Valves. CATERPILLAR TRACTOR CO. Sept. 16, 1958, No. 29592/58. Class 135. A spool valve for controlling fluid at either side of a jack has a land 27 for closing a port 22 on movement of the spool to the right, a spring urging the spool in the opposite direction to a neutral position, and a throttling notch 28 intercepting an edge of the land and forming a cylindrical pocket wherein reaction of throttled fluid passing through the notch urges the spool in the same direction as the spring. Normally, land 26 is centralized by a spring so that pump pressure at 21 passes via ports 22, 23 to sump. Other notched lands on the spool control the supply and exhaust to a jack when lands 26 and 27 close the sump ports 22, 23.
Patent GB-177195-A (GB)
Title: Improvements in or relating to compressed air brake apparatus
IPC: B60T15/04
Filed: 1920-10-20
Abstract: 177,195. Cross, J. W., and British Air Brake Co., Ltd. Oct. 20, 1920. Pressure-regulating valves.-A pressure-reducing valve for use as a feed-valve in compressedair brake apparatus has a main lift valve member opened against the high pressure by admitting high-pressure air to the back of a leaky piston. The casing has a pair of parallel passages 5, 12 adapted to establish communication with the main reservoir and main pipe respectively, when the apparatus is connected to the driver's valve by lugs 2. Communication between the two passages is controlled by a spring-pressed lift valve 18 adapted to be actuated by a piston 14. The auxiliary control valve 7 which is actuated by a spring-loaded diaphragm 17 subject to main-pipe pressure admitted through a passage 15, opens, when the train-pipe pressure falls, communication between the conduit 5 and a chamber 11 connected by a passage 27 to the piston chamber, whereby the valve 18 is opened and the pressure restored. The piston 14 has a central stem 14a adapted to engage a cover 26 to act as a stop.
Patent GB-226205-A (GB)
Title: An improved wrench
IPC: B25B13/16
Filed: 1924-12-10
Abstract: 226,205. Page, P. E. Dec. 10, 1923, [Convention date]. Sliding-jaw wrenches.-The sliding jaw 7, Fig. 3, has a toothed part 8 normally pressed by a spring 11 into engagement with a rack 5 on a bar 4 which is movable on the shank 1 of the fixed jaw 3 by means of a handle nut 16 engaging the threaded end 6 of the bar. Wrench-jaw attachments.-The Specification as open to inspection under Sect. 91 (3) (a) describes also a removable attachment 20, Fig. 1 (Cancelled), for the jaw 3, secured in position by a rib 23 engaging a recess in the jaw and by a pivoted yoke 25 engaging a notch in the outer face of the jaw. This subject-matter does not appear in the Specification as accepted.
Patent GB-877071-A (GB)
Title: Semiconductor device
IPC: H01L23/482
Filed: 1959-09-01
Abstract: 877,071. Semi-conductor devices. CLEVITE CORPORATION. Sept. 1, 1959 [Sept. 4, 1958], No. 29783/59. Class 37. A semi-conductor device comprises a body 12, Fig. 3, of semi-conductive material having at least two PN junctions 18, 20; 26, 28, arranged in pairs on each of its major surfaces, terminal connections 36, 38 for one pair of junctions 14, 22, resistances 32, 34 or resistive impedance means such as diodes, preferably semi-conductive junction diodes, Fig. 4 (not shown), interconnecting the junctions on each major surface, and a base electrode 30 making non-rectifying contact with the body 12. The semi-conductor device is symmetrical, i.e. the opposing junctions have the same area and same shape. The operation however is non-symmetrical because the resistance 32, say, causes 16 to be less effective as an emitter than 14 while the whole of 22, 24 are effective as collectors. The junctions may be annular and disc-shaped respectively, as shown, or quadrangular and rectangular respectively, Fig. 5 (not shown). The wafer 12 is of Ge or Si and the regions 14, 16, 22, 24 are formed by alloying. The resistances 32, 34 may be coatings of resistive material applied to wafer 12 between 14, 16; 22, 24 as annuli or segments contacting 14, 16; 22, 24 at several points.
Patent GB-1234993-A (GB)
Title: Process for forming a positive photographic silver halide image
IPC: G03C1/492
Filed: 1968-06-21
Abstract: 1,234,993. Photo-solubilisable silver halide materials and processes. E . I. DU PONT DE NEMOURS & CO. June 21, 1968 [June 23, 1967(3)], No.29787/68. Heading G2C. A positive photographic silver halide image is obtained by treating an imagewise exposed photosolubilizable silver halide layer with a silver halide solvent solution in the presence of a D max  maintaining agent which is an organic compound which preferentially retards the dissolution of silver halide in the unexposed as compared to the exposed areas of the layer, which is devoid of ionizable iodine or oxidizing or reducing groups which are active at the working pH, and which is (a) an aromatic hydroxy compound having at least one benzene nucleus containing a phenolic hydroxyl group, or a hydrolyzable precurser thereof, or (b) a compound of the general formula: - (C n H [2(n-k)-(z+p)+2] Xp) (O h (C m H 2m ) q Y) z  wherein z =0 or 1; q = 0, 1, 2, 3 or 4; n is greater than or equal to k; k = 0, 1 or 2; n = 0 to 18; m = 0 to 3 but is not 0 when n is 0; p is less than or equal to 2(n-k)+1; h = 0 when m = 0; h = 1 when m is greater than 0; X = Cl, Br, NO 2 , CHY<SP>1</SP>OH, C 6 H 9 Y<SP>1</SP>Y<SP>11</SP>, H, COOH or CHO; or NH 2  when n is greater than 4 or OCH 3  only when m = 0; Y = Cl, Br, OH, H, COOH, CHO, C 6 H 3 X<SP>1</SP>X<SP>11</SP>, C 10 H 5 X<SP>1</SP>X<SP>11</SP>; or NH2 when n is greater than 4; X<SP>1</SP> = any value of X except NH 2 ; X<SP>11</SP> = any value of X<SP>1</SP> plus SO 3 H; Y<SP>1</SP> = any value of Y and Y<SP>11</SP> = any value of Y, or in the case of alcohols of formula b), a hydrolyzable ester thereof. The D max  maintaining agent increases the maximum density and gamma of the layer, and agents specified include 2-butoxyethanol, o-phenylphenol, 1:2-dichloroethane and many alcohols, acids, amines, ethers, halogen compounds and hydrocarbons. The silver halide solvent specified is ammonium or sodium thiosulphate. Insolubilising compounds added to the silver halide emulsion to render it photo-solubilisable are 2-mercapto-4- phenylthiazole, 2-mercepto-4-cyclohexylthiazole, benzoxazolethiol, p-bromothiophenol, 2:5- dimercapto-1:3:4-thiadiazole, diodecane thiol, 5-nitrobenzimidazole and 1-phenyl-mercaptotetrazole with or without a merocyanine dye. The silver halide image obtained by the process can be toned or reduced to metallic silver to provide a more intense image. In Example 14 a silver halide image obtained by the above process is treated with a colour developer containing a cyan coupler to give a positive cyan image in the originally more highly exposed areas, no image in the most highly exposed areas and a negative cyan image of density varying with exposure in the less exposed areas. The image is then overall exposed to light and colour developed using a yellow coupler giving a yellow positive image and yielding a final multi-colour image in yellow,green and cyan.
Patent GB-1391355-A (GB)
Title: Wire rope
IPC: D07B1/06
Filed: 1972-06-26
Abstract: 1391355 Wire ropes DRAHTSEILWERK SAAR GmbH 26 June 1972 [16 Nov 1971] 29803/72 Heading D1T A wire rope has at least one strand layer in which at least every second strand has between its outer wires at least one gap through which a plastics or rubber substance has been forced to surround and enclose the strands of said layer, the strands of said layer being in contact with each other and the outer wires of a strand having a common circumscribing circle. Fig 3 shows half of a rope having ten strands in its outer layer, these strands being alternately thicker and thinner strands. The thicker strands are spiral shaped, that is to say designed with uniform gaps in the outer layer. The thinner strands and the strands of the inner layer have no such gaps between the wires of their outer wires, The gaps between the outer wires of the thicker outer strands permit a plastics substance to penetrate to the strands of the inner layer. The smaller strands of the outer layer may be spiral shaped A construction with the smaller strands in spiral shape and the larger strands with a closed surface is, however, contrary to the invention insofar as the gaps between the large outer strands and the inner strands supporting them could not then be filled up. It would be otherwise when the inner strands are spiralshaped and thus provide a passage between the inner and outer layers.  Fig 4 shows a two-layered parallel-stranded wire rope in which not only the strands of the outer layer, but also the strands of the inner layer, are spiral shaped. The inner layer constitutes the layer in which the strands of a layer are in contact with each other so that the plastics or rubber filling substance penetrates as far as the core strand. In Fig 4 the outer strands are spaced so far apart that they may be closed strands, that is to say strands in which the wires of the outer layer have no spacing between adjacent wires.
Patent GB-760473-A (GB)
Title: Perambulator hand protector
IPC: B62B9/20
Filed: 1952-11-26
Abstract: 760,473. Handle-bar muffs. CRAIG, M. C. Nov. 16, 1953 [Nov. 26, 1952], No. 29908/52. Class 136(3). A perambulator hand protector comprises a sheath which consists of a top portion 9 and a bottom portion 10, these portions being closed towards the front of each end and open towards the rear of each to form rear flaps, fastening means 12, 12A being provided for interconnecting the middle portions of the flaps but leaving two front openings for a person's hands, fastening means 13, 13A interconnecting both ends of the flaps arranged to leave two openings for penetration of a handle bar 6 and straps 16 at both ends of the sheath for looping around the handle-bar. A detachable lining 11 is secured to the flaps 9, 10 by press-buttons 9A, 10A.
Patent GB-1114665-A (GB)
Title: Process for the preparation of oxalic acid
Inventor: BROSSARD BERNARD PIERRE
IPC: C07C51/275
Filed: 1966-07-04
Abstract: Oxalic acid is prepared by the oxidation of olefine with a hot mixture of 30 to 80% by weight of nitric acid, 5 to 50% by weight of sulphuric acid, and 10 to 40% by weight of water which is maintained throughout.  In a modification up to 5% by weight of nitrogen peroxide may be present and the proportion of sulphuric acid may then be as low as 2.5%.  A temperature of from 50 to 70 DEG  C. may be used and the reaction mixture heated after the introduction of ethylene to remove the nitrogen oxides.  A suitable apparatus is also described.
Patent GB-292012-A (GB)
Title: Improvements in or relating to reaching in machines
IPC: D03J1/14
Filed: 1927-11-08
Abstract: 292,012. Fleischer, S. S. C. Nov. 8, 1927. Warp threads, uniting.-A reaching-in apparatus applicable to a loom, a warp tying or twisting machine, &c. has its selecting member 16 reciprocated in a direction normal to the plane of the sheet of warps &c. 25 while it is advanced in the plane of the warps &c. at each reciprocation a small distance which is only a fraction of the least thread thickness operated on. As shown, the bar 14 carrying the pivoted selector 16 is reciprocated by an electromagnet &c. 12 and lever 11 which through a pawl 10 operates a ratchet nut 8 to advance the housing 6 along the fixed screw 7. The housing 6 carries a thread strainer 22 preferably having an inclined end 24, and the bar 14 carries an arm 21 for hitting and separating the end threads 25. When the selector 16 engages a thread, 251, it is turned about its pivot by the action of a spring 17 and closes a circuit 26 thus energizing the magnet 12 until the thread 251 is removed. When the lever 11 is operated mechanically, e.g. by a cam, the return of the bar 14 is prevented by a stop 20, Fig. 5, when the selector 16 is deflected.
Patent GB-925171-A (GB)
Title: Method of imparting a colour to glass in sheet form
IPC: C03C17/10
Filed: 1958-09-18
Abstract: 925,171. Colouring glass sheets. TRIPLEX SAFETY GLASS CO. Ltd., and A. C. WAINE, and H. CHEDGZOY. Sept. 4, 1959 [Sept. 18, 1958], No. 29975/58. Class 56. To impart colour to sheet glass, the area to be coloured is coated with a solution of either pyridine tribromo gold or dibenzyl sulphide monobromo gold in an organic solvent and the glass heated sufficiently to develop a transparent colour film. The heating step may be during the heating before chilling in tempering the glass or during bending. The coating may be effected by a spray gun and may be gradated to reduce the light to 30% at the most dense shading to nothing. The sheets may be used for vehicle window glasses and in the implosion guards for television receivers. To modify the colours, small amounts of organo-compounds of metals other than gold may be added, specifically nickel or iron to give green or purple tints. Bismuth compounds may be added to assist adhesion. Solvents suggested are trichlorethylene and terpineol. Two specific examples are given. Specification 729,734 is referred to.
Patent GB-894244-A (GB)
Title: Improvements in or relating to the preparation of 10-hydroxydecanoic acid and 10-acetoxydecanoic acid
Inventor: FRAY GORDON IAN
IPC: C07C51/295
Filed: 1960-09-01
Abstract: A process for isolating as 10-acetoxydecanoic acid the 10-hydroxydecanoic acid produced by heating ricinoleic acid, or a salt or ester, thereof with aqueous alkali metal hydroxide and contained in the oily residue obtained after removing from the reaction mixture first octanol-2 and octanone-2 by distillation and then sebacic acid by hot water extraction after acidification with mineral acid, comprises reacting said oily residue with an acylating agent and thereafter separating 10-acetoxydecanoic acid from the reaction mixture by fractional distillation, either directly or after pouring the reaction mixture on to water or ice and separating the oily layer (e.g. by solvent extraction) and distilling this.  In a modification, the oily residue, prior to acetylation, is first treated with a solvent, e.g. light petroleum, which selectively dissolves at least part of the fatty acids or fatty acids and phenols present therein, and separating a residue containing 10-hydroxydecanoic acid, which is then acylated.  The 10-acetoxydecanoic acid may be hydrolysed to 10-hydroxydecanoic acid. Specification 867,771 is referred to.
Patent GB-174208-A (GB)
Title: Improvements in or relating to draught preventers for doors and the like
IPC: E06B7/20
Filed: 1920-10-25
Abstract: 174,208. Holbeche, H. Oct. 25, 1920. Draught-excluders.-In a hinged and spring- controlled draught-excluder for the bottom of a door, the hinged excluder 1 is a U-shaped metal strip and has felt &c. 2 secured in the channel of the U by pinching the limbs thereon. An actuating-arm 5 adapted to engage with the frame 6 is riveted to the strip.
Patent GB-339042-A (GB)
Title: Improvements in or relating to the heating of absorption refrigerating apparatus
IPC: F25B33/00
Filed: 1929-10-05
Abstract: 339,042. Electrolux, Ltd., (Platen-Munters Refrigerating System Aktiebolag). Oct. 5, 1929. Radiants.-In absorption refrigerating apparatus heated by a, naked flame from a gas or like atmospheric burner 12, Fig. 1, a body 16 adapted to become inincandescent is located within the hot zone of the flame so as to heat a part of the flue walls 15 of the generator A by radiation, and to ensure complete combustion. The body may consist of a gauze screen formed of three layers of medium thickness wire of a mesh about six wires per centimetre. It may be in the form of an inverted cone, or a convex member, and may be retained by stop rings welded to the flue wall, or, as shown in Fig. 8, may be fitted with springs 19 for retention by friction only. A perforated disc of ceramic material, or a tubular member spaced from the flue walls by a few projections, may be used. In a horizontal generator the tubular member should be disposed so as to direct the heat downwards. The member may consist of a twisted strip suspended in the flue, the lower part forming the radiant and the upper part serving to deflect the combustion products along the walls of the flue, or the radiant may be a part 27, Fig. 11, connected only by a narrow member 26 with a twisted baffle 25. A cylindrical member supported by spring legs, or a cylindrical conical member suspended in the flue .may be used.
Patent GB-1143472-A (GB)
Title: Improvements in or relating to luminescence diodes
IPC: H01L21/00
Filed: 1966-07-06
Abstract: 1,143,472. Electroluminescence. SIEMENS A.G. 6 July, 1966 [7 July, 1965], No. 30231/66. Heading C4S. [Also in Division H1] A luminescent A3, B5 monocrystal diode has a flat PN junction formed by alloying a pellet into the 111 surface of the crystal and removing resulting oblique recrystallization boundaries by etching. Fig. 2 shows such an N-type gallium arsenide crystal in which a tin-zinc alloy pellet was used to provide PN junction 3. The crystal has Weierstrass geometry to reduce scatter and is alloyed to a base-plate 6 of molybdenum or vacon; the other electrode is provided by a spring 8 and metal cover 9. The alloying is preferably carried out with the body immersed in graphite powder as described in Specifications 827,762 and 840,241.