baber/WOPTO huggingface dataset:
Patent GB-171455-A (GB)
Title: Improvements relating to locks for exit doors
IPC: E05B55/12
Filed: 1920-08-10
Abstract: 171,455. Adams, S. J., and Adams. R. H., (trading as Adams, R.). Aug. 10, 1920. Emergency-exit fastenings; locking sliding latches; locks, controlling operation of; latches, sliding.-In an emergency-exit fastening, the bolt is released by a press-bar, but can be either blocked in its fully-shot position against release by a key-mechanism or by a handle, or held in a half-shot, latching position by means of a handset pawl. In the form shown in Fig. 1, the bolt 1 carries on it a sliding plate, a shoulder 8 on which, when the plate is moved to the right by the pressure on the push-bar, by an arm thereon engaging the slot S in the plate, or by the keymechanism 23, 24, tilts up the arm 4 by engaging its shoulder 9, lifting the blocking-piece 2 out of the path of the bolt. Further movement of the sliding plate pushes the bolt 1 to the right, withdrawing it. The push-bar can withdraw the bolt fully, but the key-mechanism, by the engagement betwen the lug 25 of the plate 23 and the lug 26 on the sliding-plate, can only withdraw the bolt to its half-shot or latch position. If the pawl 28 is now turned by hand to engage the lug 27 on the plate 23, the lock is maintained in its latching position and the bolt cannot be fully shot by the key until the pawl is released. In the form shown in Fig. 4, the key-actuated bar 30 can lift the blocking-piece 2 from behind the bolt 1, which can be withdrawn bv the handle 32 and follower 31. The press-bar can move the sliding plate 7 and lift the piece 2 and withdraw the bolt the same as before. The hand-operated pawl 28 holds the bolt 1 in its half-shot or latching position as in the form shown in Fig. 1, but, in this case, actuation of the bar 30 by the key tilts the end of the pawl 28 and releases it from its engagement with the bolt-lug 29, allowing the bolt to shoot fully forward. If desired the known slambolt release mechanism 12, 13 can be incorporated as shown in Fig. 1.
Patent GB-302257-A (GB)
Title: Improvements in or relating to appliances for removing facial wrinkles
IPC: A61H9/00
Filed: 1927-09-06
Abstract: 302,257. Bushby, R., and Roberts, D. V. Kempe-. Sept. 6, 1927. Pneumatic appliances. - An appliance for removing facial wrinkles comprises in combination a glass tube 1 formed at one end with a narrow elongated nozzle 3, a suction-creating member 6 consisting of a water conduit with a. Venturi bore 8 connected to the tube 1 by flexible tubing 5. The member 6 has a cup portion 9 to fit over a water tap.
Patent GB-985777-A (GB)
Title: A voltage stabilised power supply for a radio receiver or the like
IPC: G05F1/46
Filed: 1961-06-29
Abstract: 985,777. Voltage stabilizers. E. K. COLE Ltd., and C. A. WALTERS. June 21, 1962 [June 29, 1961],No. 23482/61. Heading G3X. A voltage stabilizer, e.g. for use in a radio receiver, comprises a mains transformer having one secondary winding S1 feeding a full wave rectifier MR supplying a D.C. output to load terminals A, B over the collector/emitter circuit of a transistor TR, and another secondary winding S2 feeding a rectifier R producing a direct current in the base circuit of the transistor TR, the arrangement being such that changes in load current produce corresponding changes in current in the base circuit whereby the voltage occurs across terminals A, B tends to remain constant. The required output voltage is selected by adjusting a potentiometer VR1 associated with a capacitor C2 which determines the base voltage of transistor TR.
Patent GB-392898-A (GB)
Title: Improvements in a switching arrangement for vacuum switches
IPC: C10L5/20
Filed: 1931-08-21
Abstract: 392,898. High-tension switches. BIRKA REGULATOR GES., 40, K÷nigstrasse, Wannsee, and ROZUMEK, E., 10, Marschnestrasse, Lichterfelde, both in Berlin. Aug. 21, 1931, No. 23542. Convention date, Aug. 27, 1930. Void [Published under Sect. 91 of the Acts]. [Class 38 (v).] Arc-rupturing devices; cases.-A vacuum or inert-gas switch 1 in circuit with inductance at 5 is shunted by a resistance 4 and gas discharge tube 3, the nature and the pressure of the gas in which is such that the induction voltage on opening circuit causes a glow discharge but discharge cannot occur at normal voltage nor can it change into an arc discharge. The resistance, which may be of silit, and discharge tube are preferably assembled with the switch 1 as a unit. The discharge tube may be sealed in the switch 1 or surround it concentrically or may be placed in the sealed-on base thereof. The tube electrodes may be of metal of high melting-point and the discharge path may be restricted to a. certain crosssection by screening. Where the inductance of the circuit is low, the switch itself may form the gas discharge gap.
Patent GB-601537-A (GB)
Title: Improvements relating to apparatus for the experimental study of stability or other characteristics of electric machines and electrical energy distribution systems including such machines
IPC: G06G7/63
Filed: 1945-09-12
Abstract: 601,537. Cores for dynamo-electric machines. UNION D'ELECTRICITE SOC. ANON. Sept. 12, 1945, No. 23569. Convention date, Dec. 2, 1943. [Class 35] [Also in Group XXXVI] The leakage reactance of the magnetic circuits of rotary machines used in a "microsystem " is increased by the provision, of very broad notches 2, 5, for containing the windings and damping means, communicating with slots 3, 7. The portions 6 between the notches 5 are of small cross-section and easily become saturated.
Patent GB-1481374-A (GB)
Title: Lamp guards
IPC: F21V15/02
Filed: 1975-05-30
Abstract: 1481374 Lamp guards DANIEL WOODHEAD Inc 30 May 1975 [17 Oct 1974] 23636/75 Heading F4R A crush-resistant lamp-guard has two screwthread engaging portions 2, 3 of frusto-conical form, the screw-threads 14, 17 being on the inner wall 13 of an annular groove and on the inner surface of an annular rib 16. As shown, the guard has a collar 5 for connection to a light source and includes a ventilation openings 19, 20. The screw-thread depth exceeds the clearance gap between the parts 2, 3 to prevent separation when radial pressure is applied flexing and tending to crush the guard.
Patent GB-772457-A (GB)
Title: Improvements in or relating to magnetic powder clutches
Inventor: STEADMAN CLIFFORD STUART
IPC: F16D37/02
Filed: 1954-08-13
Abstract: 772,457. Magnetic powder couplings. SMITH & SONS (ENGLAND), Ltd., S. Nov. 9, 1955 [Aug. 13, 1954], No. 23652/54. Class 35. The response of a magnetic powder coupling or brake to changes in excitation voltage is rendered more rapid by providing two working gaps 13, 14 in series. Flux produced by coil 10 passes through magnetic parts 5, 7, 6 in sequence, and the driven member consists of two cupshaped members 21, 22 in the annular gaps. Specification 649,553, [Group XXXIV], is referred to.
Patent GB-1049046-A (GB)
Title: Synthesis of olefins
IPC: C07C4/04
Filed: 1964-06-08
Abstract: A process for cracking at least one paraffin containing at least 2 and not more than 15 carbon atoms, conducted in the presence of at least one homogeneous initiator which is an olefinic hydrocarbon having in the molecule a carbon to carbon single bond in a position beta to the double bond or an alkyl-substituted aromatic hydrocarbon having in the molecule a carbon to carbon single bond in a position beta to the aromatic ring, said beta position being between the alpha and beta carbon atoms away from the double bond or aromatic nucleus, the cracking operation being conducted under conditions such that said single bond is cleaved, to generate a free methyl or ethyl radical serving as initiator for the cracking process, said paraffin cracking process producing lower molecular weight hydrocarbons. The paraffin is preferably ethane, propane, n or iso-butane or n or iso-pentane and homogeneous initiators include 1-butene; 2-pentene; 4-methyl-2-pentene; 2-methyl - 2 - pentene 3 - methyl - 2 pentane ethyl-benzene; cumene; o, m and p-cymene; diisopropyl benzene; diethyl benzene; methyl-ethyl benzene; n-propyl benzene, n-propyl-toluene, sec.-butyl benzene and di-n-propyl benzene; other initiators are also specified.  In a preferred process, propane is cracked to produce ethylene and propylene is presence of an initiator and steam in amounts varying from 5:1 to 2:1 moles of steam per mole of propane, at 600 DEG  to 1000 DEG C. for a time of 0.005 to 0.5 seconds.
Patent GB-238171-A (GB)
Abstract: 238,171. Templer, J. F. H. April 29, 1924. Trawling-gear.-An otter-board is provided with a bifurcation b, Fig. 1, at the stem. A bracket f at the. apex of the bifurcation forms the only point of attachment to the towing warp and net-rope. The board is of the section shown in Fig. 2, the leading face c being convex and the rear face convex at d and concave at the tail e. The board may be weighted at the bottom and formed as a buoy at' the top. According to the Provisional Specification the board may consist of upper and lower parts connected by a yoke, and attachments may be made thereto at two or more points in the same vertical line.
Patent GB-1293877-A (GB)
Title: New or improved ball game apparatus
Inventor: PRESTON WILFRED
IPC: A63B67/00
Filed: 1970-05-16
Abstract: 1293877 Table tennis game W PRESTON 14 May 1971 [16 May 1970] 23852/70 Heading A6H Game apparatus comprises a table tennis ball and bats and a free standing vertical playing board provided with at least one opening in its upper part, the lower part being made soft or resilient so as to inhibit the rebound of a table tennis ball impelled against it. A ball receiving chute may be located behind the opening and extend to the bottom of the board and be provided with a deflector piece to deflect balls to a playing position. Scoring pointers are slidably associated with the side edges of the board, the side edges being marked with a scoring scale or scales.
Patent GB-1516695-A (GB)
Title: Switching transistor drive apparatus
IPC: H03K17/60
Filed: 1975-06-03
Abstract: 1516695 Switching NORTH ELECTRIC CO 3 June 1975 [4 June 1974] 23964/75 Heading H3T [Also in Division H2] In the control of switching transistor 36 {e.g. in a power inverter}, regenerative current feedback between the emitter-base and emitter-collector circuits is provided by means of windings 28, 30, the number of turns in base drive winding 28 exceeding that in feedback winding 30, a control circuit being coupled to the emitter-base circuit via windings 18, 28. The regeneration decreases switching times of transistor 36. Control waveform 40 controls the switching of control transistor 10, the charging current, from source 9, of capacitor 16 when transistor 10 turns off triggering the switching-on of transistor 36, whose switch-off is triggered when capacitor 16 discharges through transistor 10 when saturated. The charging path of the capacitor may simply comprise a resistor (12), Fig. I (not shown) in the control transistor collector circuit, or circuit 50 is provided, transistor 56 providing a path for the charging current wherever transistor 10 is cut off, and itself being cut off during capacitor discharge. The numbers of turns in windings 18, 28, 30 respectively are in decreasing magnitude, base current for transistor 36, when in the on state being mainly provided by the regeneration. Diode 14 enables turn-off of transistor 36 to take place even in the absence of capacitor charge due to the low impedance in the circuit 18, 14, 10. Damping; of ringing which would be caused by the base-emitter capacitance of transistor 36 co-operating with winding 28; is provided by resistor 42, with the possible addition of network 70 also protecting the base-emitter from excess reverse voltage, resistor 72 ensuring that a sudden cut-off of current diverted through network 70 does not occur with decreasing emitter-base voltage. Diode 62 protects the emitter-base circuit of transistor 56 from excess reverse voltage. Two or more power circuits may be simultaneously switched using one control circuit. The duty cycle may be in the range, low, up to in excess of 50%. The transformer may have a ferrite core.
Patent GB-992470-A (GB)
Title: Compositions mainly consisting of olefin polymers and/or copolymers and process for the preparation thereof
IPC: C08K5/098
Filed: 1963-06-17
Abstract: An addition compound of p-toluic acid and the sodium salt thereof is made by adding excess acid to ethanolic sodium hydroxide. An addition compound of barium cinnamate and cinnamic acid is made by mixing aqueous barium cinnamate and cinnamic acid at 90 DEG  C. and cooling. An addition compound of mandelic acid and a zirconium salt thereof is made by mixing zirconium nitrate (Zr(NO3)4) with mandelic acid.  The product has the formula ZrOZ2.2HZ in which Z represents a mandelic acid group.  An addition compound of benzoic acid and a basic aluminium salt thereof is made by mixing aqueous aluminium sulphate with aqueous benzoic acid.  The product, which is polymeric, has the formula <FORM:0992470/C2/1> in which Z represents a benzoic acid group and x is greater than 10.ALSO:A composition comprises an olefin polymer and from 0.01 to 5% by weight of at least one addition compound represented by the formula [MOp(OH)qZr]xY(HZ) wherein M represents a metal, each Z, which may be the same or different, represents a carboxylate group of one equivalent of a carboxylic acid selected from (a) di- and poly-carboxylic acids or (b) monocarboxylic acids containing at least one ring structure and in which p and q are each equal to 0 or an integer or a fractional number, and r and y are each integers or fractional numbers, so that p/2 + q + r equals the valence of M, and x is an integer.  Exemplified compounds are NaZ.HZ (Z=p-methylbenzoic acid group), BaZ2.2HZ (Z=cinnamic acid group), ZrOZ2..2HZ (Z=mandelic acid group) and [Al(OH)Z2]x.xHZ (Z=benzoic acid group and x=710).  The compositions are made by mixing the addition compound with the polymer, heating above the melting point of the polymer and cooling to crystallize.  Preferably the addition compound is made by reacting the metal compound and the acid in aqueous medium in the presence of an aqueous slurry of the polymer.
Patent GB-204195-A (GB)
Title: Improvements in the lids of furnaces for horizontal gas retorts
IPC: C10B25/16
Filed: 1922-09-06
Abstract: 204,195. Toogood, H. J., and Dempster & Sons, Ltd., R. Sept. 6, 1922. Lids for the charging openings of furnaces or gas producers associated with horizontal gas retorts are so constructed that the joint between the lid and its frame can be sealed by sand &c. without letting the lid into its seating on the frame. In the construction shown the body portion of the lid is surrounded by a rim a<1> connected thereto by webs a<3>, which are cut away at their lower parts to form a continuous annular space a<4> adjacent the machined face of the frame B. The sealing material, which is fed into the space between the body of the lid and the rim, drops when the lid is raised, and owing to the inclination of the frame slides from the seating surface thereon. The lid may be hinged to the frame, as shown, or may be loose, and in the latter case it is provided with a handle.
Patent GB-910038-A (GB)
Title: Light-sensitive diazo element and process
Inventor: BENBROOK CHARLES HARPSTER
IPC: G03C1/61
Filed: 1961-07-04
Abstract: 910,038. Diazotype photoprinting material. GENERAL ANILINE & FILM CORPORATION. July 4, 1961 [Sept. 6, 1960], No. 24177/61. Class 98 (2). A base having a fluorescent or phosphorescent surface is provided thereover with a one or two component diazotype layer, or such surface may be first coated with a layer of lightcoloured pigment to avoid " quenching "; and contrast, speed and other properties of the material are thereby improved. In an example, a daylight fluorescent paper formed with a coating of powdered resin treated with one or more fluorescent dyes is first coated with a slurry of sodium caseinate and silica pigment, dried, and then provided with a specified coupler-containing diazo layer. Further bases, pigments and binders therefor, fluorescent dyes and diazo sensitizers for the purpose are listed.
Patent GB-758928-A (GB)
Title: A developing machine
Inventor: JACOBS RIDLEY SAUL
IPC: G03D5/06
Filed: 1953-09-01
Abstract: 758,928. Photographic developing apparatus. NIG MANUFACTURING CO., Ltd. Sept. 1, 1954 [Sept. 1, 1953], No. 24201/53. Class 98 (2). An apparatus for developing exposed photographic material, particularly diazotype papers, comprises driven rollers 1 and 2 dipping into developing solution in troughs 4 and 5, and a third roller 6 in rolling contact with roller 2 but in adjustable spaced relation with'roller 1 so that it receives developer from the latter by capillary action. The exposed sheet 14 is passed, with the aid of guide 16 between rollers 2 and 6, and is thus wetted on both sides. Roller 6 is adjusted by a screwed rod 7 working in fixed nuts 10 and 11, the end 8 of the rod bearing on the extension 9 on the roller 6. Excess liquid is prevented from running down the topside of the sheet 14 by the extended edge 13, which also has an external recess 15 provided with holes at the bottom to return to the trough 4 any liquid running down the outside of edge 13. Specification 698,080 is referred to.
Patent GB-626712-A (GB)
Title: Preparation of crotonic acid derivatives and of phenanthrene derivatives therefrom
IPC: C07C51/353
Filed: 1946-08-14
Abstract: Tetrahydro naphthylidene derivatives of crotonic acid are made by reacting a 1-keto-tetrahydronaphthylene with a g -halogen crotonic ester under the conditions of the Reformatsky reaction, and the ester produced is hydrolysed to the free acid.  The 1-keto-tetrahydronaphthylenes have the general formula <FORM:0626712/IV (b)/1> in which R is alkoxy, aryloxy, hydroxy or hydrogen.  The product may be isomerized by heating with palladium to form a naphthalene acid derivative with a saturated side chain, and the side chain closed by known methods to form a ring. Alternatively, the product may be reduced to form a saturated side chain structure, heated with sulphur to produce a naphthalenic derivative and the side chain then closed to form a ring structure. In an example, g -bromocrotonic ester is added to a mixture of zinc wool, dry benzene, mercuric chloride and 6-methoxy-1-tetralone, the product isolated by acidifying and extracting with ether, and hydrolysed with potassium hydroxide in aqueous methanol.  The product has the formula <FORM:0626712/IV (b)/2> In a second example, this product is heated with palladium black to give the isomeric naphthalene derivative having a saturated side chain, and the side chain is converted to a closed ring in known manner to yield 7-methoxy-1-keto-1,2,3,4-tetrahydrophenanthrene.  In a third example, the acid produced in the first example is reduced with hydrogen in presence of Raney nickel and the product heated with sulphur and the side chain closed to give the same product as in the previous example.
Patent GB-322204-A (GB)
Title: An improved method of and means for calibrating thermostats
IPC: G01K5/62
Filed: 1928-08-23
Abstract: 322,204. Osborn, H. J., and Wright, A. Aug. 23, 1928. Thermostats.-A. bimetallic strip 1 is secured at one end to an arbor 5 which is pivoted on set screws 6, 7 and carries an oscillating arm 8. When it is desired to calibrate the thermostat, a clamping screw 9 is loosened and the free end of the arm held between set-screws 10; the element is then subjected .to the desired temperature and the arm again clamped to the arbor.
Patent GB-296064-A (GB)
Title: Improvements in or relating to processes for the continuous generation of water gas
IPC: C10J3/46
Filed: 1928-08-23
Abstract: 296,064. Gas und Teer Ges. Aug. 24, 1927, [Convention date]. Producers. - In the continuous generation of water gas from powdered fuel, steam and powdered fuel in a current of water gas are supplied at inlets 6, 7 respectively of a heated chamber 1, and the water gas generated and the fuel residue pass through an opening 3 to a dustseparator 5 from which part of the water gas is discharged through an outlet 9. The rest of the water gas passes through an opening 4 and is burnt with air from an inlet 10 in a chamber 2, the combustion products escaping through an outlet 12 and the ashes collecting in receptacles 8 and 11. When the chamber 2 is thus heated the action is reversed, these chambers serving as heat regenerators. To avoid excess temperatures, steam or water gases may be added to the combustion gases. In a modification, the chambers 1, 2 are each divided by a vertical partition which does not reach the top of the chamber so that the steam and fuel are heated separately before being brought into contact.
Patent GB-1152885-A (GB)
Title: Indazole-3-yl-Oxyalkanoic Acids and process for the preparation thereof
IPC: C07D231/56
Filed: 1967-05-25
Abstract: 1,152,885. lndazol-3-yl-oxyalkanoic acids. AZIENDE CHIMICHE RIUNITE ANGELINI FRANCESCO. 25 May, 1967 [29 Aug., 1966; 21 April, 1967], No. 24384/67. Heading C2C. Novel indazol-3-yl-oxyalkanoic acids of the general formula wherein X is hydrogen, chlorine, methoxy, nitro, amino or acetamino, R is hydrogen, phenyl or benzyl; phenyl and benzyl may be substituted with methyl, methoxy, halogen, trifluoromethyl or dimethylsulphamide and n is 1 or 2, and the non-toxic salts thereof with metals or organic bases and, when X=NH 2  the acid addition salts with organic and inorganic acids are prepared by reacting an alkali metal salt of the corresponding 3-oxy-indazole with a halogen compound of the formula Halogen-(CH 2 ) n -CR<SP>1</SP>, wherein R<SP>1</SP> is carboxy, carbethoxy, nitrile or carboxyamide, and where R<SP>1</SP> is other than carboxy, hydrolysing the resulting ester, nitrile or amide. Compounds in which n is 2 may also be prepared by reacting the sodium salt of the appropriate 3-oxy-indazole with propiolactone. In addition, benzyl and substituted benzyl derivatives may be obtained by reacting the corresponding unsubstituted indazole-3-ylalkanoic acids with the appropriate benzyl halide in an aqueous alkaline medium, and the 5 - nitro - 5 - amino- and 5 - acetamino - derivatives by nitrating the corresponding compound, wherein X is hydrogen, followed by reduction and acylation with acetic acid, if desired. Ethyl (1 - m - chlorobenzyl - indazol - 3 - one-2- yl) acetate and (1-p-chlorobenzyl-indazol-3-one- 2-yl) acetic acid are obtained as by-products by reacting an alkali metal salt of the appropriate 3-oxy-indazole with ethyl bromoacetal and bromoacetic acid respectively. (1-m-chlorobenzyl - indazol - 3 - one - 2 - yl) acetic acid is made by hydrolysing the above ester. The amide and nitrile of (1-benzyl-indazol- 3-yl) acetic acid and ethyl (1-m-chlorobenzylindazol-3-yl) acetate are prepared by reacting an alkali metal salt of the corresponding 3-oxyindazole with chloroacetamide, chloroacetonitrile and ethyl bromoacetate respectively. 1 - (2,6 - Dimethyl - 3 - dimethylsulphamoyl) phenyl-3-oxy-indazole is made by treating with zinc dust an acetic acid solution of N-(2,6- dimethyl - 3 - limethylsulphamoyl) phenyl - N- nitroso-anthranilic acid, resulting from the nitrosation of the corresponding substituted anthranilic acid. The sodium salt of 1-m-chlorobenzyl-3-oxyindazole is obtained by reacting 1-m-chlorobenzyl-3-oxy-indazole with sodium methoxide. The following starting materials are stated to be novel: 1-m-chlorophenyl-, 1-trifluoromethylphenyl-, 1-p-fluorophenyl-, and 1-mbromophenyl- 3 -oxy-indazoles. Therapeutic compositions, having anti-inflammatory activity contain the above novel indazole-3-yl-alkenoic acids or non-toxic salts thereof as the active ingredient.