baber/WOPTO huggingface dataset:
Patent GB-1382276-A (GB)
Title: Purification of penicillins
IPC: C07D499/00
Filed: 1972-02-01
Abstract: 1382276 Purifying penicillins BRISTOLMYERS CO 1 Feb 1972 [3 Feb 1971] 4743/72 Addition to 1292969 Heading C2C 6-[D-α-(3-Guanyl-1-ureido-phenylacetamido]- penicillanic acid is purified by converting the acid into the crystalline nitrate salt, slurrying the nitrate in aqueous alcohol and then adjusting the pH of the slurry with a base to 4À5 to 6À0 to provide a solution from which the purified crystalline penicillanic acid precipitates. The purified penicillin may then be converted into a non-toxic salt, e.g. of Na or K. The pure crystalline penicillin, and its crystalline salts and hydrates (i.e. the nitrate and its monohydrate, the potassium penicillinate dihydrate, the sodium penicillinate monohydrate and the penicillin hemihydrate) are novel. The penicillin nitrate is prepared by mixing the impure amorphous penicillanic acid with nitric acid in aqueous alcohol (e.g. 90% v/v isopropanol) at pH 1 to 2 to give a solution from which the nitrate crystallizes (as the monohydrate in the case of the specified aqueous alcohol). The slurrying step is preferably carried out in 50% v/v aqueous isopropanol, in which case the crystalline penicillanic acid is obtained as the hemihydrate. The purified penicillin may be converted to its Na or K salt by treatment with sodium or potassium ethylhexanoate in aqueous-acetone or aqueous methyl isobutylketone, the salt being crystallized by addition of more acetone or triethylamine. The salts are obtained in variously hydrated forms, the degree of hydration depending upon the water content of the aqueous-organic medium and the manner of drying the crystals. Pharmaceutical compositions having antibiotic activity against gram-positive and -negative bacteria comprise purified crystalline 6-[D- α - (3 - guanyl - 1 - ureido)phenylacetamido]- penicillanic acid or a salt or hydrate thereof together with a pharmaceutically acceptable diluent or carrier. The diluent or carrier may include sodium carbonate or trisodium phosphate as a water-solubilizer.
Patent GB-608098-A (GB)
Title: Improvements in hand brushes
IPC: A46B3/18
Filed: 1946-02-15
Abstract: 608,098. Stocks; fixing bristles. PROUDLOVE, N. Feb. 15, 1946, No. 4776. [Class 19] A cornice or hearth brush which may also be applicable as a window brush, bath brush, &c., comprises bristles held between twisted wires which extend the length of a stock and are then bent over at one or both ends into substantially circular shape with their extreme ends entering transverse bores in the back of the stock. In Fig. 1, the twisted wires have their extreme ends sprung into the transverse bores 3 in the stock 1 and the wires may be secured by a pin 10 or by adhesive or cement in addition to being a good fit in the bore. A bore 6<SP>1</SP> may be provided in the stock to receive a handle. In Fig. 3, the .brush has a handle 7 integral with the stock 1<SP>1</SP>. One end of the twisted wires enter the bore 3 in the stock while the other extreme ends are secured by a metal ferrule 8 which is pressed round the handle and wires. The ferrule may be held in position by a screw or nail 9 passing therethrough and into the handle or by a depression punched therein to enter the handle. According to the Provisional Specification, two or more twisted wires may be used and their ends may also be bent into substantially semicircular shape.
Patent GB-818525-A (GB)
Title: Improvements in combined smokers' ash-trays and electric lamps
IPC: B60N3/08
Filed: 1956-02-15
Abstract: 818,525. Lamps combined with ash-trays. MARRIOTT, J. H. Feb. 15, 1957 [Feb. 15, 1956], No. 4782/56. Class 75(3) [Also in Group VI] A back plate 1, Fig. 3, mounted on the side panel or rear door of a motor car to receive a slip-in ash-tray 4, Fig. 2, carries an electric lamp bulb 9 controlled by a switch 23 and the light from which is shielded from the car driver by the tray 4. The switch 23 comprises an insulated lever having on its fulcrum end a conducting skin co-acting with a fixed spring-clip contact 26, the members 1, 4 being of insulating material. Modification. A flush mounting in a car arm rest is described in which a flat or curved face plate has both a large upper slot to receive a drawer type ash-tray and a small lower slot behind which the lamp bulb is fitted.
Patent GB-364394-A (GB)
Title: Process for the preparation of organic derivatives of bromine
IPC: C11C3/00
Filed: 1931-02-16
Abstract: Unsaturated fatty acids of high molecular weight and of natural origin are transformed to brominesubstituted saturated acids by addition of bromine without substitution of hydrogen, and part of the bromine is then split off as hydrobromic acid, for example as a bromide, and the bromine-substituted unsaturated fatty acids thus obtained are converted to their alkali or ammonium or alkaline-earth salts.  Instead of the free fatty acids, their triglycerides may be brominated, whereupon saponification and the partial removal of bromine may be effected simultaneously, for example with alcoholic caustic potash.  Natural fatty acid mixtures, such as those obtained by saponification of olive oil, rape oil, ground nut oil, sesame oil, cotton-seed oil, linseed oil, poppy oil or fish oils, may be used, or the bromine may be added to these oils before saponification. Examples are given. Specification 340,011 is referred to.  The Specification refers to the production of brominated or iodinated triglycerides by the treatment of oils with iodine monochloride and bromine monochloride, or, free from chlorine, by additive combination with hydrobromic or hydriodic acid.  The production by addition of hydrobromic or hydriodic acid of halogenated saturated fatty acids is referred to; also, iodinated stearic acids may be obtained by addition of iodine monochloride or monobromide or hydriodic acid to linolenic acid.  The production of salts of 1-bromo3 : 4 oleic acid from 2 : 3 oleic acid, and of a monobromooleic acid from elaidic acid is referred to.  The production of stearolic acid from oleic acid via dibromostearic acid and of behenolic acid from erucic acid in a similar way is also referred to.
Patent GB-144585-A (GB)
Title: Improvements in single-trigger mechanisms for double-barrelled guns
IPC: F41A19/21
Filed: 1920-02-17
Abstract: 144,585. Strickland, D. W. Feb. 17, 1920. Single-trigger mechanism.-Relates to mechanism of the kind in which the trigger is provided with a rocking sear-lifter adapted to be moved laterally to engage the sears alternately, and consists in special selective mechanism, for effecting the lateral displacement of the sear-lifter, comprising a rocking projection mounted on the trigger-plate behind the sear-lifter and adapted to engage one side or the other of a cam projection on the lifter. In the construction shown, the sear-lifter is a post 10 pivoted on the trigger blade 3 and normally maintained central by a spring plunger 15, Fig. 2. At the rear of the post is a projection 20, Fig. 7, adapted when the trigger is pulled to engage one side or the other of a tapered tooth 26, Fig. 8, carried by a ring 21 mounted on a fixed bracket 22 on the triggerplate and capable of a limited rotation about a longitudinal axis to bring the point of the tooth to right or left of the central vertical plane. At the end of the trigger pull, the projection 20 on the lifter engages a notch 27 at the base of the tooth and turns the tooth to the other side. The tooth can be set initially to one side or the other by external push-buttons.
Patent GB-1389511-A (GB)
Title: Compositions comprising vanadium glass
IPC: H01C7/00
Filed: 1973-01-31
Abstract: 1389511 Vanadium glass composition E I DU PONT DE NEMOURS & CO 31 Jan 1973 [27 April 1972] 4885/73 Heading C1M A composition comprises, by weight, 35- 99À34% of component (1), which is either a finely-divided vandium glass containing 5-55% by weight vanadium, or a product obtained by heating such a glass, at or above its softening point but below the softening point of silica, with up to 40%, based on the weight of glass, of silica of average particle diameter not more than 40Á; and 0À66-15% of component (2), which consists of 0-90% by weight of finely-divided boron and 10-100% by weight of one or more compounds B x Si, where x is 4-6. The composition may also include 0-50% by weight of finely-divided noble metal, i.e. Au, Ag, Pt, Pd, Os, Ir, Ru, Rh and mixtures or alloys thereof, and/or 0-20% by weight of a low-melting inorganic binder, i.e. a glass melting at a lower temperature then the vanadium glass. The composition may be mixed with a liquid vehicle (1-20 parts by weight solids to 1 part liquid), to form a paint or paste which may be applied to a substrate by screen printing. The liquid may be water or an organic liquid, many examples of which are given. The coated substrate (which may be alumina), may be air fired at up to 760 C. for at least 30 minutes to produce an electrical element, e.g. a transient suppression resistor. Such a device exhibits a high resistance at low temperature and a low resistance at higher temperatures, due to the presence of VO 2  in the fired composition, which undergoes a phase change at 68 C. from a semi-conducting to a conducting state.
Patent GB-881976-A (GB)
Title: Flexible conduit and method of manufacture
IPC: B29D23/18
Filed: 1960-02-11
Abstract: 881,976. Flexible conduits. DAYCO CORPORATION. Feb. 11, 1960 [March 30, 1959], No. 4911/60. Class 99(2). In a method for manufacturing a flexible reinforced tubular conduit a tubular elastic member 12 having a predetermined diameter has positioned thereover a circumferential reinforcing member 13 having axially spaced coils with an inner diameter greater than the diameter of the member 12 and is expanded within its elastic limits to, and causing its outer surface to engage with, the inner surface of the reinforcing member, the engaging surfaces being bonded to each other. The tube 12 is thereafter relaxed so that it will tend to return to its original diameter whereby the portions bonded to the reinforcement will retain the diameter thereof while the portions between the coils of the reinforcement and unbonded thereto will become depressed thereby forming a corrugated flexible conduit. As shown in Fig. 1, the tube 12 which is formed of thermo plastic materials e.g. polyvinyl chloride, polyethylene, vulcanised natural or synthetic rubber is drawn over the mandrel 10, having an elastic covering member 11. A steel spring 13, covered with a coating 14 of elastomeric material which may be of the same type as the tube, is positioned over the tube 12. Air or other fluid under pressure is provided through bore 15 and radial passages 16 causing member 11 or the "air bag" to expand and stretch carrying with it tube 12. The tube member 12 presses against the reinforcement 13, the two being bonded together by means of an adhesive or heat provided by an electric current through the spring 13 or an induction furnace or using steam or hot air as the pressure fluid. The internal pressure is released and the resultant assembly removed. As shown in Fig. 5, additional reinforcement is provided by a second tubular member 21. The member 21 having its ends cuffed over the edge of chamber 18 is held against the wall of chamber 18 by suction provided by a vacuum pump acting through passageway 20. The above assembly is positioned within the chamber and the vacuum released when the tube 21 tends to return to its original diameter (the outer diameter of tube 12) and frictionally embrace the reinforcement 13 and tube 12. Prior to the application of the outer tube a fabric tape may be applied over the convolutions of the reinforcement. The reinforcement may be of metal or rigid plastic material e.g. nylon, polystyrene. Specifications 761,212, 782,541 and 867,836 are referred to.
Patent GB-230058-A (GB)
Title: Improvements relating to the treatment of old plates of secondary batteries
IPC: H01M10/54
Filed: 1925-02-23
Abstract: 230,058. Luthy, J. O. Feb. 28, 1924, [Convention date]. Electrodes.-The paste or filling of old grids from secondary batteries is removed by subjecting the plates to a percussive action which does not comminute the grids, for example in a ball mill, and is separated by screening. It is then pulverized, and formed into paste with an aqueous solution of a fatty acid such as acetic acid for re-use on new grids. Material from positive and negative plates may be separately removed and used, or may be mixed. Preferred proportions of the two materials, and of the acid solution, are given. The cleaned lead from the old grids may be used to make new grids or for other purposes.
Patent GB-1131123-A (GB)
Title: Improvements relating to refractory bricks
Inventor: DUFFY JOHN GEORGE
Filed: 1966-02-04
Abstract: 1,131,123. Refractory bricks. WEST HUNWICK REFRACTORIES Ltd. 27 Jan., 1967 [4 Feb., 1966], No. 4993/66. Heading F4B. A refractory brick has an oxidizable metal insert of X-shaped cross-section, the limbs of the X extending from the hot to the cold end of the brick. The insert may be of solid, perforated or expanded metal or of metal mesh, and may be welded to a metal casing surrounding the brick, and may be formed of two or more sections welded together, Fig. 6. The limbs of the X may be curved or zig-zag, and two or more inserts of X section may be arranged side by side in a brick.
Patent GB-564492-A (GB)
Title: Improvements in or relating to bimetallic billet and method of making same
IPC: B23K20/227
Filed: 1943-03-29
Abstract: 564,492. Rolling bimetallic billets. SUPERIOR STEEL CORPORATION. March 29, 1943, No. 5051. Convention date, July 31, 1942. Drawings to Specification. [Classes 83 (ii) and 83 (iv)] Bimetallic billets, such as brass-coated steel used to form sheet or strip for the manufacture of bullet jackets, are made from long steel billets so that the strip can be rolled in long coils. The brass coating strips cannot be obtained in such long length sufficiently flat for proper assembly and consequently shorter lengths, say 5 feet, are assembled between flanges of the steel billet. with either spaces between the sections or sheet separators of a contrasting metal so that in the finished strip the breaks on the facing metal are clearly seen. The flanges are deformed to hold the strips during rolling and the non-coated sections are cut out before feeding the stock to the presses.
Patent GB-388205-A (GB)
Title: Improvements in concrete flooring and structures and centering members therefor
IPC: E04B5/19
Filed: 1932-02-20
Abstract: 388,205. Floors, pillars, &c. MACDONALD & CO., Ltd., W., MACDONALD, W., and ROWE, T., 44, Brazennose Street, Manchester. Feb. 20, 1932, No. 5078. [Class 20 (iv).] A reinforced-concrete floor comprises spaced arched centring A made from asbestos pulp or a plastic composition of asbestos and cement. and retained in situ. Concrete C filled in upon the centring is provided with reinforcement R, R<1>. A ceiling. C<1> is secured to the soffits. of the concrete by.nails or pegs. Specifications 10180/08, [Class 20, Buildings &c.], 279,928, [Class 20 (iv), Floors &c.], and 365,671 are referred to. According to the Provisional Specification, the floor may have tubular members of asbestos, and similar members may be used for casing stanchions or other reinforcing members or as sheathing for reinforced concrete pillars, the interior being filled with concrete. They may also be used to form cavities, ducts, or flues around which concrete is set.
Patent GB-122957-A (GB)
Title: Improvements in Tunnel Kilns, Ovens and the like.
Inventor: FRANCART HENRI
IPC: F27B9/30
Filed: 1918-03-22
Abstract: 122,957. Francart, H. March 22, 1918. Generating by heated air and gases in furnaces and kilns.-Steam is generated in boilers a mounted above a tunnel kiln in chambers through which the heated air and gases from the cooling zone are circulated under the control of adjustable valves c. The steam may be superheated by arranging the pipe d<1> conveying it to retorts situated within the cooling zone, and it may be used for other purposes.
Patent GB-1472738-A (GB)
Title: High protein mixture adapted to be used in bakery products
IPC: A21D2/26
Filed: 1976-02-10
Abstract: A protein-containing leavening composition is prepared by mixing the following components:     a) 70 to 80% by weight of flour, b) 8 to 16% by weight of a modified whey product which is the high protein-content first fraction obtained after passing a cheese whey mother liquor, which has been freed of lactose, through a molecular sieve resin bed,   c) 2 to 6% by weight of lactalbumin   d) 3 to 5% by weight of wheat gluten and e) 1 to 5% by weight of a soya bean isolate.
Patent GB-572123-A (GB)
Title: Improved propelling pencil
IPC: B43K21/16
Filed: 1944-03-20
Abstract: 572,123. Propelling pencils. EGERTON & CO., Ltd., J., and MORGAN, H. March 20, 1944, No. 5110. [Class 146 (iii)] A pencil of the kind described in Specification 457,589 is constructed so that the lead c is a push fit in a spring tube b of the conical point section a, and the pencil is advanced by pushing in a knob l against the action of a spring k to actuate the lead carrier tube f which is formed with long slits g, and short slits h equal to a quarter the length of the tube f and formed with inclined ribs i acting as jaws. A sleeve j, which has a limited movement in a recess n in the section a, causes the jaws i to grip the pencil to advance it as the knob l is pressed inwards, and the grip is released when the sleeve reaches the left-hand end of the recess n. On the return of the knob, the pressure of the jaws is put on when the sleeve j reaches the right-hand end of the recesses n, so that in use the lead is held firm by the tube b and the jaws i.
Patent GB-1014508-A (GB)
Title: Improvements relating to electrical switch contacts
Inventor: WATERTON FRANK
IPC: H01H1/02
Filed: 1961-02-10
Abstract: 1,014,508. Casting composite articles. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 9, 1962 [Feb. 10, 1961], No. 5122/61. Heading B3F. In a method of manufacturing an electrical switch contact of the type having a metal body and a tip with a multi-metallic free surface comprises pressing a thin disc of high arcing voltage refractory metal so that it is formed with at least one depression in one surface, casting low arcing voltage filler metal in a vacuum on to said surface, simultaneously casting said body in a vacuum on to the other surface of said disc, and subsequently removing the excess filler metal so that the free surface of the disc is formed partly from said refractory metal and partly from said filler metal. The disc may be of molybdenum, the filler metal a tin-nickel or tin-nickel-copper alloy and the body copper. The disc 22, Fig. 1, is supported between a graphite ring 13 and a two-part graphite mould 6, 7, in a graphite container 1, having a sliding bottom closing plug 2. The spaces above and below the disc are supplied with solid filler metal and body metal respectively and the evacuated assembly placed in a vacuum in a radiation or induction furnace. When the metals are melted, a weight 17 forces filler metal 25 into the recess in the disc and a weight 18 causes the plug 2 to force molten copper 24 into the body mould cavity through gate 9. The assembly is then removed from the furnace and allowed to cool. The different thicknesses of the container wall, together with a polished molybdenum sheet jacket 5 causes the metal in the mould cavity to solidify first so that voids &c. are filled from the still molten copper 23 in the reservoir. The casting is then removed, the mass 23 broken off from the body 24, and the surplus filler metal machined from the top surface of the disc. The disc may have several recesses formed in it. In a modification, Fig. 4, the body metal 47 is contained in a reservoir above the disc 43 and the weight thereof forces the filler metal 45 upwardly into the recess.
Patent GB-581131-A (GB)
Title: Improvements in or relating to electrical switching arrangements and switches, therefore
IPC: F42C19/06
Filed: 1942-04-17
Abstract: 581,131. Inertia switches. BLACKMAN, W., and KING, E. B. April 17, 1942, No. 5125. [Class 38 (v)] A switch combination is arranged to close (or open) a circuit when it is subjected first to an acceleration and thereafter to a deceleration. Such combination can be used for arming a rocket projectile. During acceleration of the rocket, the capillary mercury switch, Fig. 1, closes its contacts A3. After the propellant is burnt the rocket decelerates, and the mercury is retained around the contacts A3 due to the capillary, whereas mercury in a non-capillary switch, Fig. 2, mounted parallel to and at the side of the switch, Fig. 1, closes its contacts B1 connected in series with the contacts A3. The rocket is thereby completely armed. A trap A5 prevents closing of the contacts A3 due to accidental vibration prior to the prolonged acceleration due to burning of propellant.
Patent GB-841737-A (GB)
Title: Improvements in or relating to coin freed apparatus
Inventor: MAXWELL STEWART ALFRED
IPC: G07F11/24
Filed: 1958-02-18
Abstract: 841,737. Coin-freed vending apparatus. FISHER & LUDLOW Ltd. Feb. 18, 1959 [Feb. 18, 1958], No. 5166/58. Class 27 Coin-freed vending apparatus adapted to deliver an article in response to the rotary movement of a handle 28 mounted externally of a casing 10 comprises one or more pairs of article magazines 19, 20 disposed within the casing with the magazines of each pair disposed in backto-back relationship, a delivery mechanism 26, 27 mounted beneath each magazine, and means for causing the delivery mechanisms associated with each pair of magazines to rotate in opposite directions. As shown applied to a vending machine having a single pair of magazines, the delivery mechanisms 26, 27 are in the form of two rectangular-shaped front-and-rear shafts 31 having interengaging pairs of arms 32 forming cradles for supporting the lowermost article. The two shafts 31 are connected by gears 29, 30 and are arranged 90 degrees out-of-phase with each other as shown in Fig. 3. The front shaft 31 of the delivery mechanism 26 is rotated by the handle 28 through a coin-actuated mechanism 18 and a pawl-and-ratchet drive which permits, after the shaft has been rotated through 90 degrees, the handle to return under spring action to its normal inoperative position. In operation, when the handle is rotated after the insertion of the correct coinage, the front shaft is rotated so that an article which has been retained in its cradle by a guide plate 34 after a previous operation, is released and falls under its own weight into a delivery shoot. The rear shaft 31 is simultaneously rotated in the opposite direction so that the article, resting in its cradle, is rotated to a position where it is retained by a guide plate 33 ready to be delivered at the next machine operation; curved surfaces are formed on the arms 32 so as to ride under and support the next lowermost article. If desired, the pair of arms 32 can be arranged to deliver articles after every 180 degrees or other angular rotation and several pairs of magazines may be arranged in side-by-side relationship.