baber/WOPTO huggingface dataset:
Patent GB-733171-A (GB)
Title: Improvements relating to circuit arrangements for operating electric discharge lampsof the low pressure type
Inventor: CLARKE MAURICE GEORGE
IPC: H05B41/232
Filed: 1952-07-07
Abstract: 733,171. Supply systems for space discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. July 7, 1952, No. 17026/52. Class 38 (4). In a starting and operating circuit arrange. ment comprising two or more low pressure electric discharge lamps L1, L2 serially con. nected to an A.C. supply of voltage insufficient to initiate, but sufficient to maintain, the discharge through all the lamps, each but one, L2, of the lamps is shunted by a respective capacitor C serially connected with a non- inductive resistor R, the latter reducing during running the peaking effect of the capacitor on the waveform of the lamp discharge current. The ballast is provided by a choke, or if a stepup transformer T is required this is of the highreactance type. Each thermionic electrode E may be short-circuited, and each lamp may have a starting stripe. Specifications 426,808 and 565,843 are referred to. Reference has been directed by the Comptroller to Specification 681,637.
Patent GB-1263807-A (GB)
Title: Aqueous emulsion polymerization process
IPC: C08F2/22
Filed: 1969-04-01
Abstract: 1,263,807. Coated paper. DOW CHEMICAL CO. 1 April, 1969 [8 April, 1968], No. 17054/ 69. Heading B2E. [Also in Division C3] Paper is coated with a pigment binding latex polymer which is made by introducing a monoethylenically unsaturated dicarboxylic acid, optionally together with a first increment of a mixture of at least one monomer containing an aromatic ring having a group of formula CH 2 =CR- attached, where R is H or C 1-4  alkyl, and at least one acyclic conjugated diene, into a polymerisation zone where polymerisation is initiated and maintained at above 50‹C as the above mixture of monomers or the remaining increments thereof are added, and acrylic acid or an α-substituted acrylic acid is then added, after at least 90 wt. % conversion of the monomers, and the polymerisation is completed, the dicarboxylic acid providing 0.5-2.5% by wt. and the acrylic acid or substituted-acrylic acid 1-5% by wt. of the total monomers. In the examples a latex of a copolymer of acrylic acid, itaconic acid, styrene, butadiene and #-hydroxyethyl acrylate was prepared and compounded with mixtures of kaolin clay and Ca CO 3 , or of china clay, together with starch and tetrasodium pyrophosphate, which may be used for paper coating.
Patent GB-1201643-A (GB)
Title: Improvements in high duty control and stop valves
Inventor: MASHEDER HENRY
IPC: F16K31/44
Filed: 1967-04-14
Abstract: 1,201,643. Valves. MASHEDER DESIGN STUDIES Ltd. 27 Oct., 1967 [14 April, 1967], No. 17214/67. Heading F2V. A closure member 18 is carried in a T-slot 17 in the front face of a crosshead 14 moved by an operating stem 13 and guided in its housing 4 by part-spherical rollers 15. The member 18 seats in the mouth 9 of a Venturi 8 and has limited movement in a direction parallel to the crosahead front face. The rear outer extremity 19 of the crosshead engages an abutment 20 in the closed position of the valve. The closure member may have spherical, conical or flat sealing seating surfaces.
Patent GB-416360-A (GB)
Title: Knife-blade and like sharpeners
IPC: B24D15/08
Filed: 1933-06-17
Abstract: 416,360. Sharpening knives &c. WHITELAW, L. S., 7, Idol Lane, London. June 17, 1933, No. 17282. [Class 60.] A sharpener for the blade of a knife, razor, or other bladed instrument is combined with and disposed upon the end of or within a pen, pencil, or a point protector. In one form, as applied to the end of a pencil, the sharpener is of tempered steel or stone in the form of a screw head or a nut provided with a slot through which a blade may be drawn. The sharpener may be in the nature of a piece of abrasive material 7, Fig. 2, situated in the end of the point protector 6 of a pencil or in the cap of a fountain pen. In the form shown in Fig. 7, disposed on the end of a pencil is a hollow metal tube 15 provided with a cross slot 17, and situated within the tube is a small piece of tempered steel 18 which is also hollow and provided with two specially shaped slots 19, one slot curving to the left and the other to the right as seen in plan, so that a blade placed in the slot 17 and drawn to and fro will be sharpened at each side by contact with the sides of the slots 19.
Patent GB-1396444-A (GB)
Title: Suspension assembly for metal treating vessels
IPC: C21C5/50
Filed: 1973-04-11
Abstract: 1396444 Mounting converters PENNSYLVANIA ENG CORP and AVRR 11 April 1973 [1 May 1972] 17323/73 Heading F4B A metal treating vessel is secured to a pivotable support member by two sets of attachments, one set of attachments being fixed to the support or the vessel at spaced locations, and the second set being releasably attached to the vessel or the support and each of the second set being releasably engageable with one of the first set so as to allow limited movement in the radial direction of the vessel in the engaged position, and to allow relative axial movement of the vessel and support when in the released position. A converter 10 is supported in a trunnion ring 14 by releasable devices 16, adjacent each trunnion and additional support brackets 15 and stabilizing devices 17. Each device 16 comprises a plate 30 secured to a reinforcing ring 25 by webs 31. The plate 30 slides in the upper surface 24 of the trunnion ring 14 and is held in place by gib-plates 32 and strips 35 releasably secured to the trunnion ring, Figs. 3 and 4. The additional supports 15 are similar but have no gibplates. The stabilizers 17 comprise brackets each having a plate 54, Fig. 5, sliding between L-section rails secured to the underside 26 of the trunnion ring, and a plate 53 connected to the slide plate 54 by webs 58. Oblong members 63 secured to the converter shell co-operate with holes in the plates 53, and washers 67 of similar shape are pivoted about bolts so that they may be moved to allow the brackets to be moved clear of the converter body, or tightened to hold the plates 53 firmly against the converter
Patent GB-245672-A (GB)
Title: Improvements relating to electric luminous tubes
IPC: H01R33/945
Filed: 1925-07-06
Abstract: 245,672. General Electric Co., Ltd., (Assignees of Patent Treuhand Ges. f³r Elektrische Gluhlampen). Feb. 9, 1925, [Convention date]. Transformers. - The ends of vacuum tubes used for lighting, advertising, and like purposes are surrounded by transformers for generating the high-voltage current required, and the two are enclosed in a bell-shaped conical or like housing so that no high voltage conductors are exposed. In the arrangement shown in Figs. 3 and 4, the housing d is of conical form and the transformer core f is of corresponding cross-section, the windings f<1>, f<2> being separated by air gaps f<3>. The end c of the tube a containing the electrode b is arranged within the transformer and shoulders h may be provided to keep the transformer in place. In the arrangement shown in Fig. 6 the transformer coils are wound one inside the other and a choke-coil i is arranged above the' transformer and separated therefrom by an insulating washer k. A condenser or resistance may be substituted for the choke-coil. The transformer and casing may be arranged to surround the ends of two or more tubes.
Patent GB-1098981-A (GB)
Title: Improvements in or relating to tube or rod connecting devices
IPC: F16B7/22
Filed: 1964-04-27
Abstract: 1,098,981. Clamps. OLYMPIC GYMNASIUM CO. Ltd. and J. ALLEN. March 17, 1965 [April 27, 1964], No. 17396/64. Heading E2B. A tube or rod connecting device is adapted to be rigidly connected to the end portion of a first, 11, of a pair of rods or tubes which are to be connected, the device comprising a pair of jaws 12 13 to engage and releasably retain the second rod or tube 20 of the pair, one jaw 12 being fixed and the other 13 pivoted to the fixed jaw, one jaw having a peg 16 which extends toothwise from it towards the other jaw and protrudes into a corresponding hole in the second rod or tube when the second rod or tube is engaged by the jaws, means being provided to clamp the jaws in engagement with the second rod or tube when it is engaged thereby. As shown the device is provided with a cap 10 which fits over the rod or tube 11 and is riveted, screw threaded or welded to the end portion of the rod or tube 11; the jaw 12 consists of two like pieces of plate metal welded to the cap 10 in spaced relation, the spacing being maintained by a block 15 and the peg 16. The jaw 13 is pivoted to the jaw 12 between these two pieces by a pin 14 and it has a pad 18 through which it engages the rod or tube 20. The means for securing the jaws in the engaged position is a screw 17 which is threaded through a tapped hole in the block 15 to engage a facing 13c of the jaw 13. The two rods or tubes can constitute part of gymnastic apparatus, the rod or tube 11 being horizontal with a said device at each end and there being two rods or tubes 20 one engaged by each device. In a modification instead of using a screw 17 as the clamping means, a plunger, spring loaded into co-operation with the facing and arrange for manual withdrawal, can be provided.
Patent GB-1330085-A (GB)
Title: Electrostatic copying machines
IPC: G03B27/62
Filed: 1972-04-14
Abstract: 1330085 Electrostatic copying machine DICK CO A B 14 April 1972 [15 April 1971] 17402/72 Heading G2H An electrostatic copying machine, Fig. 1, comprises a housing having an opening in the top over means defining an exposure station, an open frame 32, Fig. 2 disposed in the opening, a transparent platen 42, Fig. 2 coextensive with the open area defined by the frame and hinged thereto and a cover 37 coextensive into the platen and hinged to the frame at 44. Mounting means are provided for supporting the frame in the opening for pivoting movement through at least 180 degrees back and forth between: (1) a copy position in which the frame is horizontally disposed with the cover and the platen so as to permit mounting of material to be copied by swinging the cover away from the platen and placing the material face down on the latter: and (2) a brading position wherein said frame is horizontally disposed with said platen over said cover so as to permit mounting of material to be copied by swinging the platen away from the cover and placing the material face up on the latter.
Patent GB-204134-A (GB)
Title: Improvements in or connected with motion retarding devices for weighing scales and the like
IPC: G01G23/08
Filed: 1922-06-24
Abstract: 204,134. Automatic Scale Co., Ltd., and Blick, E. L. June 24, 1922. Vibration, neutralizing. -A damping device particularly adapted for use in automatic weighing scales or the like consists of a liquid-containing receptacle within which is located an apertured substantially enclosed container having slidably mounted therein a piston which is free of the walls oi the container and is connected to a part of the weighing mechanism. Fig. 1 shows one form of the device in which the container 6 is located in the liquid containing bath 5 and is provded with a piston 12. The end walls 7 are provided with apertures which are regulated by means of apertured movable caps 8 to control the flow of liquid between the container 6 and bath 5. In another form the container 5 is vertical and the piston is adapted to operate in a vertical direction.
Patent GB-676580-A (GB)
Title: Improvements in or relating to polymerization method
IPC: C08F26/06
Filed: 1950-07-12
Abstract: A copolymer of 85-98 per cent by weight of acrylonitrile and from 2 to 15 per cent of a vinyl monomer substituted with a basic amino group is prepared by gradual addition of the monomers to an aqueous medium in the presence of from 0.05 to 0.5 per cent, based on the weight of the monomers, of a water-soluble salt of an aldehyde condensed aromatic sulphonic acid, and in the presence of from 0.5 to 2 per cent by weight of an alkali metal persulphate, preferably potassium persulphate.  The vinyl monomer may be 2-vinyl pyridine, 4-vinyl pyridine, 2 - methyl - 5 - vinyl pyridine, 5 - ethyl - 2 - vinyl pyridine, dimethylaminoethyl methacrylate, or vinyl quinoline. The sulphonic acid compound may be the sodium salt of a formaldehyde condensed mononaphthalene sulphonic acid.  A molecular weight regulator such as t-dodecyl mercaptan or carbon tetrachloride may be present in the reaction mixture and in a preferred process a small quantity of catalyst, dispersing agent and, if desired, the regulator, is present at the beginning of the reaction and additional catalyst, dispersing agent and regulator added throughout the reaction.  The product may be spun into fibres.
Patent GB-600352-A (GB)
Title: Adjustable transmission line
IPC: H01P1/18
Filed: 1943-10-22
Abstract: 600,352. Adjustable transmission lines. STANDARD TELEPHONES & CABLES, Ltd. Oct. 22. 1943, No. 17461. Convention date, May 12, 1942. [Class 40 (viii)] A unit for insertion in a transmission line to permit adjustment of its effective length comprises two pairs of arcuate conductive strips 40, 41 and 42, 43 which are joined to the transmission line by short cables 48, 49 and are engaged by brushes 56, 56<1> and 57, 57<1> on the ends of diametrally arranged bridging conductors 52, 43 which are rotatable by means of a knob 60. The conductive strips are supported on the outer casing or shield 10 by insulators 46 and each strip is grounded thereto at the end remote from the cable 48 or 49 by a metal block 44. The conductors 52, 53 are supported by insulators 50, 51 on a flat shield 30 mounted on stub shafts 20, 21. In order to regulate the effective length of the unused portions of the strips 40, 41 and 42, 43, they are arranged to be short-circuited by brushes 62, 64 carried by the cross-straps 61 of a frame 22, 23. The distance between the brushes 62, 64 and the brushes 56, 56<1>, 57, 57<1> measured along the strips is preferably a quarter-wavelength, and the frame 22, 23 is made adjustable with respect to the shield 30. A modified construction for use with coaxial lines has only one pair of arcuate strips which are joined to the central conductor on either side, the outer casing or shield being connected to the outer conductor.
Patent GB-478053-A (GB)
Title: Improvements in plotting and computing devices
IPC: G01C21/20
Filed: 1937-06-24
Abstract: 478,053. Calculating - apparatus. HUGHES & SON, Ltd., H. June 24, 1937, No. 17587. Convention date, June 30, 1936. [Class 106 (i)] A device for solving navigation problems comprises a rotatable transparent disc 1 operated by a knob 26 and having at its edge a compass scale 8. Beneath this disc is an endless band 4 shown opened out in Fig. 4 and provided with (a) markings 5, 6, 7 forming a section of a scale of polar co-ordinates, and (b) a scale of rectangular co-ordinates. The band passes over rollers 12, 11 and is operated by a knob 19. The band is kept tensioned by mounting the roller 11 in sliding blocks 15 acted upon by springs 17. Adjacent the rotatable scale 8 is a fixed index mark 9 and a fixed scale 10 for use in taking account of magnetic variation. A mark 3 is provided at the centre of the rotatable disc 1.
Patent GB-530643-A (GB)
Title: Improvements in or relating to the tanning of skins
IPC: C14C3/22
Filed: 1939-06-16
Abstract: 530,643. Tanning. DU PONT DE NEMOURS & CO., E. I. June 16, 1939, No. 17677. Convention date, June 16, 1938. [Class 76] [Also in Group IV] Skins are tanned to form white leather by treatment with acidic polymers of α-unsaturated aliphatic carboxylic acids, including inter-polymers of such acids with other polymerizable substances. Tanning is preferably carried out at room temperature by drumming the skins with aqueous solutions of the polymers having a pH of 4.8 to 6.4. After penetration of the solution into the skins, the rate of tanning is accelerated by lowering the pH to 3.4 to 4.2 by the addition of lactic, hydrochloric, sulphuric, acetic, phosphoric, sulphamic, or formic acid. The agents may be used in conjunction with vegetable or chrome tanning agents, aluminium sulphate, or synthetic agents containing sulphonic groups ; white pigments may be added to the tanning bath. Examples describe the tanning of goatskins and calfskins using polyacrylic acid, polymethacrylic acid, and interpolymers of acrylic acid :and methacrylic acid, maleic anhydride and styrene, methacrylic acid and styrene, and methacrylic acid and methyl methacrylate. Other suitable agents are polymerized ethyl acrylic acid and interpolymers of acrylic acid and styrene; maleic anhydride, methacrylic acid and styrene; and methacrylic acid with maleic anhydride, diethyl fumarate, butadiene, vinyl acetate, dichlorethylene, indene, vinyl chloride, vinyl chloracetate, or methacrylamide. The polymers may be prepared from the monomers by heating in the presence of benzoyl peroxide, by heating in toluene solution (which may contain carbon tetrachloride) under reflux or in an autoclave, either with or without benzoyl peroxide, by adding to hot water which may contain methylated starch, or by exposure to ultra-violet light: The acidic polymers may also be prepared by the partial or complete hydrolysis of polymers or interpolymers of derivatives of the acids, e.g., esters, amides, or nitriles; for example the methyl methacrylate polymer prepared according to Specification 427,494, [Group IV], may be dissolved in benzene and hydrolysed with alcoholic potash solution.
Patent GB-1239913-A (GB)
Title: Telephone systems for use with dictating equipment
Inventor: SANDERS KENNETH BERTRAM
IPC: H04M11/10
Filed: 1967-04-18
Abstract: 1,239,913. Substation equipment. INDUSTRIAL COMMUNICATIONS & ELECTRICAL CO. Ltd. 18 July, 1968 [18 April, 1967], No. 17712/67. Heading H4K. An adaptor unit for coupling the output of a playback device such as a dictating machine to a telephone line at a substation comprises a switch which when operated disconnects the telephone instrument from the line and couples input terminals (to which the output of the playback device could be connected) via a matching transformer to the line. As shown the switch is of the non-holding type and has a single pole contact K3 which connects a socket S (comprising the terminals) via an attenuator pad R to the primary winding W1 of the transformer T, and two make-before-break contacts K1 and K2 which normally connect the telephone instrument I directly to the exchange terminals A, B over their break contacts but which when operated connect one secondary winding W2 of the transformer to the exchange terminals and a second secondary winding W3 of the transformer to the telephone instrument so that both subscribers can hear the output of the playback device.
Patent GB-1127889-A (GB)
Title: Feeding and dewatering apparatus
IPC: B30B9/12
Filed: 1967-04-18
Abstract: 1,127,889. Filter. DORR OLIVER Inc. 18 April, 1967 [27 April, 1966], No. 17752/67. Heading B1D. [Also in Division F1] An apparatus for dewatering sewage in which separated liquid is withdrawn through bar screen 21 and retractable hollow shaft 29, comprises a hollow casing 13, and a screw or rotor 18 for conveying and compressing the sewage before discharge into a furnace. Bar screen 21 is mounted on hollow shaft 29 so that the screen can be withdrawn into the cavity in screw or rotor 18 to reduce the effective filtering area of the screen. Bars of the screen 21 may be wedge shaped becoming narrower inwardly. The apparatus may be an axial flow rotary pump such as a screw or progressive cavity type pump.
Patent GB-109178-A (GB)
Title: Improvements relating to the Refining of Iron.
Inventor: ROLLASON ARTHUR
IPC: C21C5/52
Filed: 1916-12-12
Abstract: 109,178. Rollason, A. Dec. 12, 1916. Cast-iron processes. - Phosphoric or common pig iron is refined by a three-stage process in which silicon and carbon are removed in an acidlined converter, phosphorus is eliminated in a basic-lined converter, and deoxidation of the metal is effected in an electric furnace. The converters used are preferably of the side-blown or surface-blown type. After or before the transfer of the metal to the electric furnace, the highly silicious slag from the acid-lined converter, to. gether with any other necessary purifying-. material, is added to the furnace.
Patent GB-1167666-A (GB)
Title: Polymerization Process
Inventor: BRISTOL JOHN EDWIN
IPC: C08F18/04
Filed: 1968-04-16
Abstract: 1,167,666. Polymerizing vinyl esters. E. I. DU PONT DE NEMOURS & CO. 16 April, 1968 [13 April, 1967], No. 17975/68. Heading C3P. In the polymerization or copolymerization of vinyl esters followed by stripping off unreacted monomers, a colourless hydrazine compound having at least one nitrogen bonded hydrogen is added before the stripping step as a polymerization inhibitor. Solution in methanol or emulsion technique can be used. The vinyl ester is the acetate, formate, propionate or butyrate and in examples acrylic acid, methacrylic acid, monomethyl maleate or vinyl pyrrolidone is added as comonomer. Hydrazine monoacetate is used as inhibitor. The product is alcoholysed.
Patent GB-1483421-A (GB)
Title: Dispensing machine
IPC: G07D9/00
Filed: 1975-04-30
Abstract: 1483421 Dispensers G LAFON 30 April 1975 [30 April 1974] 18027/75 Heading B8S A dispensing machine for small articles such as coins comprises a chamber 1 which is rotatable about a vertical axis, a circular plate 2 positioned within the chamber 1 for rotation with an inclined shaft 8 about the axis of the latter, the chamber 1 having a flat arm 7 on to which coins, which are initially poured on to the lower part of the plate 2, are led by rotation of the latter, the rim 7 being bounded by a non- rotatable cylinder member 3 so that the coins travel along with the rim 7 and are held by centrifugal force against the inner surface of the member 3 and pass out of the machine through a shoot (4) located in a sector of the member 3, Figs. 1, 2 (not shown). The inner wall of the chamber 1 is shaped at 5 like the frustum of a cone leading into a cylindrical portion 6. The centre 15 of the upper surface 9 of plate 2 is spaced by a distance d from the axis of revolution of the chamber 1.
Patent GB-1087232-A (GB)
Title: Improvements relating to masts for sailing vessels
Inventor: DYER DAVID EDWARD
IPC: B63B15/00
Filed: 1965-04-29
Abstract: 1,087,232. Attachment of sails to masts. IAN PROCTOR METAL MASTS Ltd. April 18, 1966 [April 29, 1965], No. 18053/65. Heading B7V. A mast 1, or a member for attachment to the aft face of a mast, incorporates a luff rope groove 2 extending from a point at or near the masthead to a point 2a above deck level and some distance above the attachment point for the boom gooseneck 30, and a slideway 7 adjacent the luff rope groove extending from an upper point which is not below the lower extremity of the luff rope groove, to a lower point 7a which is below the lower extremity of the luff rope groove but above the attachment for the boom gooseneck, and being adapted to carry slides 8 attached to the luff rope 5 of the sail 6, the arrangement being such that on lowering the sail, when the luff rope disengages from the luff rope groove, the sail will remain attached to the lower part of the mast due to the retention of the slides in that part of the slideway below the lower extremity of the luff rope groove. The boom 32 has a groove 33 to accommodate the foot rope 34 of the sail.