baber/WOPTO huggingface dataset:
Patent GB-796434-A (GB)
Title: Machine for filling tubes with a powder substance for making electric heaters
Inventor: BAUMELOU MARCEL
IPC: H01B7/16
Filed: 1955-12-29
Abstract: 796,434. Sheathed electric heating resistances. METALLURGIE DU NICKEL. Dec. 29, 1955, No. 37239/55. Addition to 789,633. Class 39(3) In a machine for filling tubes for sheathed heating elements with powder according to the parent Specification, the tamping mandrel reciprocated within the tube to be filled by a cam comprises a rod 5 formed with a plurality of longitudinal apertures 6 equal to the number of resistance wires to be embedded in the powder in the tube. The mandrel comprises a longitudinally bored rod 5 or several tubes fixed to one another and has longitudinal external grooves 7 engaged by clamp jaws 1, 2 having in their faces as many recesses 4 as there are projections on the mandrel between the grooves 7 in order to prevent rotation of the mandrel during tamping. The jaw faces may have terminal shoulders preventing them from slipping in the device which, grips them. The resistance wires may be supported from above by an arm which has at one end a clamp for attachment at a desired height to a vertical arm in the upper part of the filling machine and has at the other end an interchangeable wire carrier or needle with as many holes as there are wires to be embedded, said holes forming wire guides. Thus three resistance wires or two resistance wires and a return conductor may be embedded.
Patent GB-1449717-A (GB)
Title: Method of reducing the tritium content of gas streams
IPC: G21F9/02
Filed: 1974-08-23
Abstract: 1449717 Removing tritium from a gas stream ENGELHARD MINERALS & CHEMICALS CORP 23 Aug 1974 [27 Aug 1973] 37241/74 Heading C1A Tritium is removed from a gas stream comprising molecular tritium and/or a compound of tritium and at least one gas other than molecular protium and oxides thereof, said gas stream containing tritium atoms in above naturally occurring concentration relative to protium atoms, by reacting the gas stream with sufficient air or oxygen to convert any tritiumcontaining species to tritiated water, introducing the resulting gas stream into a first absorption zone containing a dessicant to remove the tritiated water, diluting the remaining T 2 O in the gaseous effluent from the first absorption zone with ordinary water and introducing the thus diluted effluent into a second absorption zone containing a dessicant and absorbing therein the mixture of tritiated water and ordinary water. The tritium content of the initial gas stream may be up to 6% by volume whereas the gas leaving the second absorption zone contains less than one part per billion of T 2 O. In a preferred embodiment a gas stream containing tritium is heated to 200-350‹ F. in heater 12 and catalytically oxidized at 200- 1000‹ F. in a combustor 14. Suitable catalysts are Pt, Pd, Rh and mixtures thereof on a support of alumina, silica or other ceramic. The space velocity in the combustor may be between 3000-60,000 per hour. The gas is then cooled 16 and passed to a dessicator 18 which suitably contains a zeolitic molecular sieve or a silica gel. The gas leaving the absorber 18 typically has a T 2 O content of less than 1 p.p.m. This T 2 O content of the gaseous effluent is diluted with ordinary water by a factor of at least 1000 to 1 and passed to a second dessicator 20. The gas leaving the second dessicator typically has a T 2 O content of less than one part per billion. The gas stream from the second dessicator may be recycled to the heater 10, particularly when the inlet gas contains hydrocarbons. The absorbed oxides of the hydrogen isotopes on the dessicant materials may be regenerated or otherwise processed.
Patent GB-1445575-A (GB)
Title: Method for producing amorphous precipitated siliceous pigments
IPC: C09C1/28
Filed: 1973-08-06
Abstract: 1445575 Preparation of silica pigments J M HUBER CORP 6 Aug 1973 [24 Aug 1972] 37271/73 Heading C1A Silicon dioxide pigment is prepared by adding acid to an alkali metal silicate solution until precipitation just begins (i.e. the solution becomes opalescent) then continuing to add acid and simultaneously adding AM silicate solution so that the pH remains constant until precipitation is complete. The pH may be maintained constant at a value between 8 and 11. The acid is preferably H 2 SO 4  but may be HNO 3 , HCl, acetic, formic or CO 2 . The AM silicate may be Na, K or Li and have an SiO 2  : alkali metal oxide molar ratio of 1 : 1 to 4 : 1. The precipitate may be separated, dried and ground. Water-soluble salts of Mg, Ca, Al and Zn may be added with the acid producing alumino-silicates or silicates. The silicate solution may be 1-2À5 lb. per U.S. gallon and the acid diluted to 10-25%. The solution temperature may be 100-250‹ F. The product may have a surface area of 50-200 m.<SP>2</SP>/g. and may be used as a reinforcing pigment in rubber, paint or paper manufacture.
Patent GB-981669-A (GB)
Title: Improvements in and relating to squirrel cage windings
IPC: H02K21/46
Filed: 1963-09-23
Abstract: 981,669. Squirrel-cage windings. BROWN, BOVERI & CO. Ltd. Sept. 23, 1963 [Sept. 25, 1962], No. 37281/63. Heading H2A. Thermally induced bending stress is reduced in deep squirrel-cage conductors s by removing a part or parts c of the top or (as shown) the bottom of the conductor. The conductors are connected to end-rings r by flexible connectors v. The slot-depth may be varied to produce the desired clearance instead of using shaped conductor-bars.
Patent GB-814279-A (GB)
Title: Synthesis of steroids
IPC: C12P33/00
Filed: 1957-11-29
Abstract: Hydroxylated steroids of the 3-keto- D 1,4-pregnadiene series are prepared by subjecting a hydroxylated steroid of the 3-keto- D 4-pregnene series to the action of enzymes of Bacterium cyclo-oxydans (A.T.C.C. No. 12673).  The steroid reactant may be a mono-, di-, tri- or tetrahydroxylated progesterone such as 11a -hydroxy-progesterone, 9a - and 12a -halo-11b -hydroxy - progesterone, desoxycorticosterone, 21 - fluoro - 17a  - hydroxy - progesterone, corticosterone, 9a - and 12a -halo-corticosterones, D 4 - pregnene - 17a ,21 - dihydroxy - 3,20 - dione, 11b ,17a  - dihydroxy - progesterone, cortisone, 9a - and 12a -halocortisone, 21-fluoro-11b ,17a -dihydroxy-progesterone, 9,21-difluoro-11b ,17a -dihydroxy-progesterone, hydrocortisone, D 4-pregnene - 11a ,17a ,21 - triol - 3,20 - dione, 9a -and 12a -halo-hydrocortisone, and 9a -fluoro-16a  - hydroxy - hydrocortisone, and 21 - esters of those steroid reactants containing a 21-hydroxy group such as D 4-pregnene-17a ,21-dihydroxy-3,20-dione 21-acetate, hydrocortisone 21-acetate, 9a -fluorohydrocortisone 21-acetate and 9a -fluorocortisone 21-acetate.  The preferred 21-esters are those of hydrocarbon carboxylic acids having less than 10 carbon atoms such as acetic and propionic acids, the monocyclic aryl carboxylic acids-particularly benzoic and a -toluic acids, the monocyclic aryl lower alkanoic acids-particularly phenacetic acid and b -phenylpropionic acid, and the cycloalkane and cycloalkene carboxylic acids.  In the examples, D 1,4-pregnadiene-11a -ol-3,20-dione and D 1,4-pregnadiene-11a ,20b -diol-3-one are prepared from 11a -hydroxyprogesterone, D 1,4 - pregnadiene - 11b ,17a ,21 - triol - 3,20 - dione is prepared from hydrocortisone, 9a -fluoro - D 1,4 - pregnadiene - 11b ,17a ,21 - triol - 3,20-dione is prepared from 9a -fluorohydrocortisone, D 1,4 - pregnadiene - 17a ,21 - diol - 3,20 - dione is prepared from D 4 - pregnene - 17a ,21 - diol - 3,20 - dione, D 1,4-pregnadiene-17a ,21-diol-3,11,20-trione is prepared from cortisone, and D 1,4 - pregnadiene - 11b ,17a ,21-triol 21-acetate is prepared from hydrocortisone acetate.
Patent GB-1517070-A (GB)
Title: Thermographic duplicating apparatus
IPC: B41L19/00
Filed: 1976-09-09
Abstract: 1517070 Thermographic duplicators CARL LAMM AB 9 Sept 1976 37370/76 Heading B6C A thermographic duplicator comprises a rotatable drum 2 having a cooled cylinder part 3 and a master-carrying cylindrical segment 4 movable over and spaced from the surface of the cylinder part 3. Radiators 6, 7 heat the master M which contacts a dye-carrying web on holder 5 to pick up dye for printing. Cooling liquid is passed through part 3 and the radiators 6, 7 and is itself cooled in cooler 9. Part 3 and segment 4 may be separated by a heat-insulating layer, e.g. a liquid film.
Patent GB-523075-A (GB)
Title: Improvements relating to the control of television receivers
IPC: H03J9/00
Filed: 1938-12-23
Abstract: 523,075. Television receivers. KOLSTERBRANDES, Ltd., and BRAND, P. M. Dec. 23, 1938, No. 37493. [Classes 40 (iii) and 40 (v)] A television receiver has remote controls for brightness or contrast and preferably for the sound level. The normal brightness control is constituted by a variable resistance R41 forming part of a potentiometer R31, R41, R42 supplying the cathode of the cathode ray tube. The insertion of a plug P into a jack J replaces R41 and R42 by remote resistances R43, R44. Similarly, the variable remote resistance R61 replaces the variable resistance R6 forming part of a potentiometer R5, R6 coupling the grid G of a triode to the load resistance R8 of the diode D7 rectifying the sound modulated intermediate frequency from T. For contrast control, a gain-controlling impedance in the vision channel varies the potential of the grid of the cathode ray tube, and this impedance may be disposed at the remote point and controlled therefrom.
Patent GB-1177157-A (GB)
Title: Improvements relating to Stanchions
Inventor: HILL DAVID FEAR
IPC: E01F9/018
Filed: 1967-08-16
Abstract: 1,177,157. Stanchions. PORT OF LONDON AUTHORITY. 21 Oct., 1968 [16 Aug., 1967], No. 37771/67. Headings E1B and E1G. A cylindrical stanchion for supporting chain link fencing comprises a stump part 5 for securing in the ground and a main part 4 interconnected by a rectangular section collar 6 in which they have an interference fit, the collar having raw cuts at the corners so that if the stanchion is subjected to impact the collar breaks rather than the stanchion. The abutting ends of the stump and main parts are tapered at 10‹.
Patent GB-1030518-A (GB)
Title: Hydraulic control means
Inventor: BEARD JACK HERBERT
IPC: F15B13/04
Filed: 1963-09-25
Abstract: 1,030,518. Hydraulic presses. DAVY & UNITED ENGINEERING CO. Ltd. Sept. 9, 1964 [Sept. 25, 1963], No. 37793/63. Heading B5F. The crosshead 12 (Fig. 1, not shown) of a press is moved at constant speed by an hydraulic ram 15 and cylinder 16 connected to an accumulator 22 through a valve 20 having means 77, Fig. 2 (not shown), biasing it to a closed position, a control ram 13 and cylinder 14 coupled to the crosshead, means for supplying a constant mass flow of liquid to the control cylinder and means for opening the valve against the biasing means in dependence on the pressure in the control cylinder. The constant speed valve 20 is seen in Fig. 2 and comprises an inlet 66 connected to the accumulator 22 and an outlet 70 connected to the press cylinder 16. A plunger 72 having end portions 73, 74 connected by a cut-away portion 75, is biased to the right by a spring 77. In operation, when pressure in a line 60 exceeds the force of the spring 77, plunger 72 moves to the left, thus connecting the inlet 66 to the outlet 70 through passages 67, space 76, and passages 71 so that water can flow from the accumulator 22 to the press cylinder 16. The position of plunger 72 varies in order to maintain the speed of the crosshead constant.
Patent GB-1109464-A (GB)
Title: Improvements in or relating to overheating protection circuits
Inventor: MCCANN MALCOLM RICHDALE
IPC: H02H7/085
Filed: 1964-09-16
Abstract: 1,109,464. Protective arrangements. STANDARD TELEPHONES & CABLES Ltd. 10 Sept., 1965 [16 Sept., 1964], No. 37810/64. Heading H2K. In a protective arrangement for an electrical machine comprising a positive temperature coefficient thermistor PTC in thermal contact with the machine and a semi-conductor device which, on increase of the resistance of the thermistor, changes its state to control means for interrupting the supply to the machine, a latching circuit is connected to the semiconductor device to prevent its automatic return to its original state when the resistance of the thermistor falls, but which after the interruption and on resumption of the supply permits the semi-conductor device to assume the state appropriate to the resistance of thermistor. In Fig. 2 the semi-conductor device is a transistor T 1  which is normally non-conducting, but conducts when the resistance of the thermistor PTC increases and causes a further transistor T 2  to stop conducting. A relay A is de-energized and opens its contacts to interrupt the supply to the protected machine and at contacts A 3  removes a short-circut from a capacitor C 1 . The capacitor C 1  becomes charged and the potential across it is sufficient to latch the transistor T 1  in the conducting state. When the supply is interrupted the capacitor discharges and on resumption of the supply the resistance of the thermistor determines which transistor conducts. In the arrangement of Fig. 3 (not shown) both transistors are normally conducting and control the firing of a silicon controlled rectifier in series with the coil of a contactor. The latching circuit includes a third transistor.
Patent GB-1183169-A (GB)
Title: Sealing Spot-Welded Metal Parts, Prior to Soldering, with Sealer Composition
IPC: B23K1/00
Filed: 1968-08-08
Abstract: 1,183,169. Welding by pressure; soldering; casting composite sheet Joints; mould materials. GENERAL MOTORS CORP. 8 Aug., 1968 [24 Aug., 1967], No. 37816/68. Headings B3F and B3R. [Also in Division C1] A composition to provide a leakproof seal between parts, e.g. of an automobile body, which are spot welded, consists of in parts by weight; 90-99À5 calcium sulphate dihydrate, 0À5-10 suspension agent, and 0-0À05 fungicide. The preferred composition consists of in parts by weight; 98-99 calcium sulphate dihydrate, 1-2 polysaccharide gum, and 0À02-0À04 sodium pentachlorophenol. Animal glue, colloidal silica, clay or montimorillonite instead of polysaccharide gum and sodium hypochlorite, sodium 2-phenylphenate, formalin, sodium o-phenylphenol or sodium 2,4,5-trichlorophenol instead of sodium penta. chlorophenol may be used. 38 parts water to 100 parts composition are used to produce a soft extrudable paste. Overlapping sheet metal portions 16, 18 of members 12, 14 are spot welded at 26 and the paste 19 is inserted by hand or by gun into the gap 20 between the welded overlapped parts to fill a continuous portion of the gap including a major depression 28. The excess paste at the edge of portion 18 is removed by wiping and a tinning layer 30, Fig. 4, consisting of in parts by weight, 30 tin powder, 70 lead powder and zinc chloride in water to form a slurry, is painted over the welded and sealed parts. The water from the paste 19 and from slurry 30 is removed by gently heating by a blow lamp and at the same time the tin and lead are melted. A silicone rubber half mould is placed over the tinned surface and with the mould and joint area heated molten solder, e.g. 91À5% lead, 5% antimony, 3% tin and 0À5% arsenic, at 850‹ F. is poured into the mould to fill the recess formed by the parts and the solder is then ground flat. An example of a composition consists of in parts by weight; 99 calcium sulphate dihydrate, 1 polysaccharide gum, and 0À03 sodium pentachlorophenol, mixed with 50 parts by weight of water.
Patent GB-1103902-A (GB)
Title: Odour eliminator type air filter
IPC: F24F8/158
Filed: 1965-09-03
Abstract: 1,103,902. Air filter gas adsorption. FARR CO. 3 Sept., 1965 [8 Sept., 1964], No. 37841/ 65. Headings B1L and B1T. An air filter for ventilating plant comprises a plurality of filter cells 20 arranged in a zig-zag stacked manner in an open ended housing 11, each cell comprising a bed of activated carbon enclosed between two flat moulded polystyrene panels (Figs. 5 - - 8, not shown), the panels being pierced by holes which are elongated in the longitudinal direction of the housing parallel to the general air flow. The cells are closed on three edges and internally divided by integral walls (48), while a fourth edge may be opened by withdrawing a slidable closure strip (51) exposing each compartment in turn. By this means one compartment may be emptied and the contents sent for testing and the refilled cell replaced in the housing until the test result is known. The cells 20 are seated in grooves 29 formed between alternately oriented triangular protrusions 28 of moulded polystyrene side walls (27) of the housing. At the outlet 16 fixed closures 30 seal between adjacent cells, and at the inlet 15 a removable assembly 32 carries similar closures 34, assembly 32 having lower studs 35 and upper screws 38 and, when removed, permitting cells 20 to be withdrawn from the housing.
Patent GB-863775-A (GB)
Title: Racks for pallets and similar shelf-forming plates or boards
IPC: A47B57/40
Filed: 1959-11-09
Abstract: 863,775. Racks. MARKUSSEN, M. Nov. 9, 1959 [Feb. 25, 1959], No. 37842/59. Class 52(1). A palletrack comprises tubular stanchions 10 connected to form a frame, with slots 11, 12 into which are inserted brackets 13 with L- shaped projection 16. The opening 22 at the end of notch 19 prevents the stanchion being torn when gripped by the notch.
Patent GB-1069959-A (GB)
Title: Treatment of cellulosic textile materials
IPC: D06M13/137
Filed: 1964-09-16
Abstract: Textile materials containing natural and/or regenerated cellulose fibres, e.g. cotton and viscose rayon, are crease-proofed by applying to them up to 45%, based on the weight of the air-dried textile material, of a bath containing a semiacetal of formaldehyde with a monodi-, tri- or tetrahydric low aliphatic alcohol having 1-6 carbon atoms, a strong mineral acid, e.g. hydrochloric or nitric acid, or a strongly acidly reacting salt of a strong mineral acid with a metal having a valency of 3 or 4, e.g. aluminium trichloride or zirconium oxychloride, and not more than 32% by weight of water, and leaving them to stand at room temperatures for 4-36 hours.  The textile materials may then be rinsed, neutralised and dried.  The bath may contain 65-93% by weight of the semiactal, 1.5-6% by weight of the strongly acid catalyst and 5-32% by weight of water and may be applied by means of an applicator roll, spraying or printing. Alternatively the material may be impregnated with the bath and reeled together with 1-4 dry untreated lengths of the same material on to a reel and left to stand until a substantially completely uniform distribution of the bath solution to all lengths is achived. Up to two thirds of the total quantity of the semiacetal may be replaced by methylol compounds of cyclic propylene or hydroxypropylene urea, cyclic ethylene urea, ethylene diurea, dihydroxyethylene urea or urethanes of low aliphatic alcohols. Textile materials pretreated with optical brighteners, and softening and sizing agents may be treated.
Patent GB-1414214-A (GB)
Title: Selective separation of xylenes by crystal size classi fication
IPC: B01D9/02
Filed: 1973-08-10
Abstract: 1414214 Separating xylenes by crystallization STANDARD OIL CO 10 Aug 1973 [11 Aug 1972] 38031/73 Heading C5E Meta-xylene is recovered from a mixture of C 8  aromatic isomers by cooling the mixture so as to form a slurry of liquor and crystals, the crystals comprising discrete m-xylene crystals, p-xylene crystals and less than 10 wt. per cent o-xylene crystals, and separating crystal solids enriched in m-xylene crystals from the slurry by crystal classification. The crystal classification may be carried out by one or more stages of gravity settling, elutriation or screening, or by the action of centrifugal force, e.g. in solid bowl centrifuges or cyclones. The feed may comprise 8-13 wt. per cent p-xylene, 8-20 wt. per cent ethylbenzene, 15-25 wt. per cent o-xylene and the balance being m-xylene but the o-xylene may be removed prior to cooling. The recovered solids may be further enriched in m-xylene by melting and recrystallization. The filtrates may be mixed with the separated oxylene, isomerized and recycled to the feed.
Patent GB-904077-A (GB)
Title: Improvements in or relating to the welt hooks for the welt dial of circular knittingmachines
IPC: D04B15/06
Filed: 1960-11-07
Abstract: 904,077. Knitting-machines &c. CONDOR S.A.S. DI R. SANTAGOSTINO & C. Nov. 7, 1960 [May 4, 1960], No. 38120/60. Class 74 (2). A welt hook for a circular machine is of constant thickness throughout its length and has a semicircular or other recess S in the width of the tail to promote resiliency.
Patent GB-822157-A (GB)
Title: Improvements in rotary fluid compressors
IPC: F04B27/00
Filed: 1956-12-13
Abstract: 822,157. Rotary compressors. MEGATOR PUMPS & COMPRESSORS Ltd., and McCOMBIE, F. W. Dec. 10, 1957 [Dec. 13, 1956], No. 38126/56. Class 110 (2). [Also in Group XXVIII] A rotary compressor similar to that described in Specification 592,432, having three eccentric discs 2 spaced around a common shaft, each disc being associated with a shoe 3 of rubber, synthetic rubber or plastics so that rotation of the shaft 1 causes reciprocation of the shoe 3 in the housing 6, the several displacement chambers operating in sequence, is so arranged that the effective delivery from any one chamber is retarded by the positioning of an adjacent chamber. Each shoe or chamber has a common delivery and suction port 12 brought into register with ports in a plate 7 carried by the cover 8 of the housing 6. The plate 7 has a suction port 9 leading to a passage 10 which is common to the suction ports 9a, 9b for the eccentrics not shown in the Figures. In addition there are three delivery ports 14, 14a, 14b and three outlet ports 15, 15a and 15b in the plate 7, Fig. 2, these ports being so connected that when the port 12 registers with the port 14, the compressed fluid passes through port 14 to delivery passage 16 and thence to outlet port 15a from which it escapes into the housing 6 only when the adjacent shoe uncovers the port 15a, i.e. when the adjacent shoe has its maximum speed. Port 15a closes when the shoe 3 covers the delivery port 14. After fluid has been discharged through port 15a, liquid enters the passage 16 through a passage 13 in the shoe 3 from the casing 6 to prevent the compressed fluid passing back to the displacement chamber. In an alternative construction the displacement chambers are cylinders each containing a piston reciprocated by a shaft as described in Specification 822,155, [Group XXVIII]. As before, the cylinders reciprocate over cover-plates having suction, delivery and outlet ports arranged as in the first embodiment. This embodiment may be mounted within a reservoir or accumulator and its casing is provided with large openings through which liquid can pass to seal and lubricate the moving parts. The cylinders may be metal but preferably are made of a thermoplastic or thermo-hardening synthetic resin or rubber, natural or synthetic. Metal liners may be provided. Specifications 616,618, 617,750, 622,792, 639,017, 732,167 and 822,156 also are referred to.