baber/WOPTO huggingface dataset:
Patent GB-313595-A (GB)
Title: An improved self-starting synchronous electric motor
IPC: H02K19/14
Filed: 1929-05-15
Abstract: 313,595. Landis et Gyr Soc. Anon. June 16, 1928, [Convention date]. Alternating-current induction machines. - A synchronous motor, particularly a small motor for electric clocks, variable tariff meters &c., has a bi-polar stator, an asynchronous rotor element for starting, and a synchronous rotor element having a larger number of definite poles than the stator. The rotor elements may be separate, but, as shown in the Figure, a single member carries a synchronous element 10 which in the example shown has four poles, and this supports the asynchronous element comprising an iron or steel ring 12 surrounded by a copper or other ring 11. The ring 12 may be laminated. The stator 1 has a single energizing coil 3, and a part of each pole 4, 5 has thereon a short-circuited ring 6.
Patent GB-1001334-A (GB)
Title: Improvements in or relating to rolling bearings
IPC: F16C23/06
Filed: 1964-04-13
Abstract: 1,001,334. Bearings. SVENSKA KULLAGERFABRIKEN A.B. April 13, 1964 [April 18, 1963], No. 15188/64. Heading F2A. One of the races of a ball or roller bearing is supported by a flexible diaphragm 9 which forms a wall of a chamber 16. The chamber 16 is supplied with pressurized fluid by a pipe 22 and passages 20, 21 in a housing 1, so that the diaphragm is deformed and an axial load is applied to the bearing to take up play. In an embodiment, the outer race 5 is mounted in a sleeve 6 having a shoulder formed thereon by an inwardly-directed flange 7. The inner edge of the diaphragm is clamped between an outwardly directed flange 8 of the sleeve 6 and a ring 10 and the outer edge of the diaphragm is clamped between rings 12, 14 which are mounted in a counter-bore of the housing 1. A sealing- ring 19 is mounted between a shoulder 17 of the bores and a tapered surface 18 of the ring 10, and a cover 15 is provided. The bearing arrangement is suitable for a high-speed grinding wheel.
Patent GB-575159-A (GB)
Title: Improvements in frequency modulation
IPC: H03C3/24
Filed: 1943-09-16
Abstract: 575,159. Frequency modulation; copying telegraphy. DEHN, F. B. (Press Wireless, Inc.). Sept. 16, 1943, No. 15196. [Classes 40 (iii) and 40 (v)] An audio-frequency oscillator, comprising reciprocally-coupled valves with a resistancecapacity phasing-network between them, is frequency modulated by variation of the network resistances, which take the form of variable-resistance electronic valves. As shown, the coupling network between the reciprocallycoupled triode valves 6, 13 comprises a series electronic resistance 2 and capacity 4 connected between the plate of valve 6 and the grid of valve 13, and an electronic resistance 3 shunted by a capacity 5 connected between that grid and earth. The signal, which may arise from a facsimile telegraph transmitter, is used to vary the oscillation frequency by varying one or both of the electronic resistances 2, 3. The electronic resistances 2, 3 may take the form of double-triode valves which have their grids connected to the signal source and their plate circuits transformer-coupled to the circuit of the oscillator. The signal voltages applied to one of the control valves may be less than that applied to the other with a view to avoiding amplitude modulation of the generated oscillations,(Fig. 2, not shown). Specification 537,689 is referred to.
Patent GB-126232-A (GB)
Title: Improvements in Heating and Ventilating Apparatus.
Inventor: ILIFF FRANK
IPC: F24D5/00
Filed: 1918-09-19
Abstract: 126,232. Iliff, F. Sept. 19, 1918. Air-heating and ventilating stoves.-A stove adapted to heat fresh air and deliver it to the apartment, and to withdraw foul air is provided with a gas burner b, or other heating means, beneath a plate d, over which fresh air entering at k is directed by a baffle m. The heated air rises and escapes through openings o beneath a deflecting-shield p. Foul air entering at g is induced to flow upward through a flue h by the gases from the burner which rise through the passage e in front of the dividing plate f. The mixed heated foul air and products of combustion pass through a radiator chamber i and escape at j, or they may pass direct to the outlet, the chamber i being then dispensed with. Fig. 4 shows the apparatus adapted to a cylindrical casing, but an arrangement with a rectangular casing is shown in the Specification.
Patent GB-365941-A (GB)
Title: An improved screw wrench
IPC: B25B13/16
Filed: 1931-05-26
Abstract: 365,941. Wrenches. SEROPOULOS, S., 13, St. Anne Street, Liverpool.-(Pascalides, D. ; 140, Queensferry Street, Carlton, Victoria, Australia.) May 26, 1931, No. 15350. [Class 61 (iii).] A screw wrench comprises a casing 1 with an end jaw 2, and a jaw-ended shank member 3 slidable in said casing having a screw-threaded stem 5 engaged by a nut 8 restrained against axial movement and connected by a screw 15 and squared projection 11 to a hand-grip 12. The part 1a of the casing is slotted to permit assembly of the nut.
Patent GB-1464358-A (GB)
Title: Compensating circuit for electronic switches
IPC: H03K17/06
Filed: 1975-04-15
Abstract: 1464358 Gating circuits INTERNATIONAL STANDARD ELECTRIC CORP 15 April 1975 [22 April 1974 (2)] 15405/75 Heading H3T In an arrangement for compensating for the resistance of an electronic switch RON passing a signal current when closed, a controllable resistance RS and a measuring current source W are connected in series with the switch, the resistance being controlled by a circuit, e.g. differential amplifier KR, which compares the voltage at a point in the series circuit with a reference voltage UR, the arrangement also including an amplifier VT outside the series circuit for amplifying the signal current. If the measuring current is A.C. filters T11, T12 may be provided for by-passing transformers U1, U2 at measuring current frequency, and filter T2 for by-passing the source W at signal current frequencies. If the measuring current source is D.C. Fig. 1 (not shown) it may be by-passed by a capacitor (C). Two arrangements of either type may be used in a balanced system, Figs. 2, 4 (not shown).
Patent GB-794394-A (GB)
Title: Steroid compounds and process for their production
IPC: C07J75/00
Filed: 1956-05-17
Abstract: The invention comprises a compound having the formula: <FORM:0794394/IV (b)/1> and 21-hydrocarbon carboxylic acid esters thereof wherein the ester radical contains from one to twelve carbon atoms, and a process for producing a 2-halo-11b ,17a ,21-trihydroxy-4-pregnene - 3,20 - dione and 21 - esters thereof which comprises protecting the 3-keto group of a 2-halo-3-keto-11-oxygenated 4,17(20)-[cis]-pregnadiene-21-carboxyloxy compound with a 3-keto protecting group, reducing with an alkali metal aluminium hydride, to form a 2-halo - 11b ,21 - dihydroxy - 4,17(20) - [cis] - pregnadiene-3-one having a 3-keto-protecting group, acylating the 21-hydroxy group with a carboxylic acid acylating agent having 1-12 carbon atoms in the acyl radical, removing the 3-keto protecting group by hydrolysis and oxidatively hydroxylating the thus formed 2-halo - 11b  - hydroxy - 21 - acyloxy - 4,17(20)-[cis] - pregnadiene - 3 - one with an oxidizing agent and osmium tetroxide to produce a 2-halo - 11b ,17a  - dihydroxy - 21 - acyloxy - 4-pregnene - 3,20 - dione, and hydrolysing the 21-acyloxy group of the latter, if desired.  Alternatively the 2-halo-11b ,21-dihydroxy-4, 17(20) - [cis] - pregnadiene - 3 - ketal may be acylated and hydrolysed to produce a 2-halo-11b  - hydroxy - 21 - acyloxy - 4,17(20) - [cis]-pregnadiene-3-one. The 2-chloro compounds may be converted to the corresponding 2-iodo compounds by means of sodium iodide in acetone.  The 11b -hydroxy compounds are converted to the corresponding 11-keto compounds by means of N-bromoacetamide. Examples describe the preparation of 2-chloro-11b ,17a , 21 - trihydroxy - 4 - pregnene - 3,20 - dione, 21-esters thereof including the 21-acetate, and the corresponding 2-fluoro compounds. Specification 761,528 is referred to.ALSO:2-Halohydrocortisones, e.g. 2-chlorohydrocortisone, and 21-esters thereof, are useful in pharmaceutical compositions and mixtures, e.g. ointments, lotions, greases, creams, and aqueous suspensions, for topical use.  Ointments may, in addition, incorporate an antibiotic, e.g. neomycin sulphate. Specification 761,528, [Group IV (b)], is referred to.
Patent GB-374613-A (GB)
Title: Automatic belt shifting mechanism for apparatus for grinding or trueing leather covered or other rollers used in the textile or other trades
IPC: F16H61/662
Filed: 1931-05-29
Abstract: 374,613. Variable-speed belt gearing. DRONSFIELD, J., Atlas Works, Oldham. May 29, 1931, No. 15707. [Class 80 (ii).] Relates to an automatic belt or like shifter for use in apparatus for grinding or trueing leather-covered or other rollers used in textile and other trades, for example as described in Specifications 7095/01 and 249,299, [both in Class 60, Grinding or abrading &c.], in which the traverse of a grinder at different speeds in each direction is required. The grinder at each end of its travel moves a rod b axially, the rod carrying stops b<2>, b3 which move one, for example a<4>, of a pair of loose brackets a<4>, a<5>, slidable on the rod b and on a rod a3 moving with a rod a which carries the belt-forks a<1>. The bracket a<5> is temporarily held by a pawl e so that a spring lying between the brackets is compressed. On further movement of the bracket a4 its inclined edge a<4x> engages an incline on the pawl e and the bracket a<5> is released and is thrust forward rapidly by the spring bearing upon stirrups a<2> secured to the rods a, a<3> and thus moving the belt on to the pulley step f<1>. In the opposite direction of motion of the grinder, the bracket a<4> is temporarily held by a second pawl e<1> which is similarly released to allow the spring to thrust the belt on to the pulley step f<2>.
Patent GB-192662-A (GB)
Title: Improvements in axle boxes for side tipping wagons
IPC: B61F17/08
Filed: 1922-06-07
Abstract: 192,662. South Metropolitan Gas Co., Carpenter, C. C., and Gibson, T. S. F. June 7, 1922. Dash-pots. - An axle-box, suitable for sidetipping waggons, has a bottom brass carried by a hydraulic cylinder or dash-pot so that the axle-box may withstand upward shocks. As shown in Figs. 1 and 3, the axle-box b has a lower brass g carried by a piston e which is pressed on the journal a by a spring f. The piston is slidable in a hydraulic cylinder d, the central chamber h of which communicates by passages j with the oil reservoir in the body of the axle-box. Oil is led to the underside of the piston e through a passage k. Any upward shock, tending to separate the journal and the upper brass c is resisted by the oil pressure on the piston e.
Patent GB-129360-A (GB)
Title: Improvements in and relating to Electrodes for Electric Arc Welding.
Inventor: LANGUEPIN EMILE
IPC: B23K35/36
Filed: 1917-10-31
Abstract: 129,360. Languepin, E. Oct. 31, 1917. Heating by electricity.-In order to facilitate arc soldering with either direct or alternating current, the electrode is enclosed in a thin sheath of pure kaolin or other compact material which melts at a high temperature and boils at a slightly higher temperature, so that, in use, it vulatilizes without condensation on the molten metal. The coating is applied by dipping in kaolin paste and slowly drying, these operations being repeated two or three times.
Patent GB-1179293-A (GB)
Title: Cooling Tower.
IPC: F28F25/04
Filed: 1967-04-06
Abstract: 1,179,293. Cooling towers. MASCHINENBAU A.G. BALCKE. 6 April, 1967 [9 April, 1966], No. 15905/67. Heading F4K. In a cooling tower wherein water to be cooled is conveyed above irrigation plates 14 by channels 1, said channels are provided with base apertures 2 and with overflows 3 and 4, water emerging from the apertures 2 being evenly distributed over the plates 14 via distributer devices 16, while surplus water flowing through overflows 3 and 4 reaches the distributer devices 16 via guide means 17. In other embodiments, each individual channel 1 can either have a further outer channel (Figs. 4-6) around it, the latter channel being provided with a discharge which concentrically surrounds the outlet socket of the internal channel, or have said outer channel replaced by a guiding device consisting of a box (Figs. 7-9) enclosing said inner channel. Further embodiments include subdividing the channel 1, by a partition wall (11, Fig. 10) situated longitudinally in the channel, into two parts, the surplus from the water conveyed into the first part flowing into the second part via overflows situated in said intermediate wall, or as in another case, providing in the outlet of the channels, concentric pipes (12, Fig. 13) of small diameter, said pipes terminating at various heights.
Patent GB-354428-A (GB)
Title: Improvements in or relating to apparatus for separating stones from coal
IPC: B03B4/02
Filed: 1930-05-23
Abstract: 354,428. Separating solid materials. REVELART, A. J., 12, Rue d'Arras, Carvin, Pas-de-Calais, France. May 23, 1930, No. 15959. Convention date, June 7, 1929. [Class 117.] In apparatus for separating materials of different density, such as coal and shale, an air-pervious shaking table 10 is supported at one end by links 11 and is actuated by eccentrics 12 at the other so that the movement of the table varies from circular, through elliptical to linear. In the construction described, the pervious support 14 is formed at the bottom of a cavity 13 and is inclined rearwardly towards the feed end to an aperture 20 and adjustable weir 22 by which the slate &c. is discharged. The coal &c. is discharged by the forward shoot 26. In a modification, the cavity 13 is divided into two compartments with oppositely sloping pervious bases and two discharge apertures for separating out a middlings product.
Patent GB-816401-A (GB)
Title: Improvements in and relating to electrical induction relays
Inventor: WARRINGTO ALBERT RUSSELL VAN C
IPC: H01H50/16
Filed: 1955-06-03
Abstract: 816,401. Inductors; induction motors. ENGLISH ELECTRIC CO. Ltd. June 4,1956 [June 3, 1955], No. 15966/55. Classes 35 and 38 (2). [Also in Group XXXVII] A relay intended to respond against a mechanical restraint when the impedance of a line falls below a certain value and having two separate shaded-pole magnet systems acting in opposition upon an electro-conductive armature, one magnet system being energized in accordance with the line current and the other in accordance with the line voltage-this latter system acting in the restraining sense, is provided with a saturable inductance to prevent a lowering of the response value of the line impedance at low values of line voltage. The saturable inductance may be either in effective series connection with the voltage winding or in effective parallel connection with the current winding; alternatively, the relay may have both these inductances. As shown, Fig. 2, an E- shaped voltage core 10 energized by coils 11 has an outer lamination 12 of high permeability and a further lamination 13 of high permeability forming a flux leakage path. At high values of line voltage the laminations 12, 13 are saturated but at low voltages they are not saturated and a greater proportion of the flux passes therethrough and hence the working proportion of the flux is reduced and the magnet 10 offers less restraint. The current core 15, Fig. 4, energized by coils 16, has a lamination 14 of high permeability which saturates at high voltages and thus at low voltages when the lamination 14 is not saturated the working flux, which flows through 14, 15, is proportionally increased. To provide exact adjustment of the relay characteristic a few turns of copper wire may surround the high-permeability laminations to provide an eddy current path, these turns being connected to a variable resistor; alternatively, the turns may be shorted successively by twisting their ends until the adjustment is obtained.
Patent GB-1032876-A (GB)
Title: Hexahydropyrido-benzodiazepine derivatives
IPC: A61K31/55
Filed: 1965-04-14
Abstract: Novel compounds of the general Formula I <FORM:1032876/C2/1> wherein R and R1 independently represent hydrogen, halogen, alkyl or alkoxy, R2 and R3 independently represent hydrogen or alkyl, or R2 and R3 form together with the adjacent nitrogen atom a 1-pyrrolidinyl, piperidino, morpholino, 1-piperazinyl or 4-methyl-1-piperazinyl radical, and n is an integer of from 2 to 5, and acid addition salts thereof, are prepared by reacting a compound of the general Formula II <FORM:1032876/C2/2> wherein X is halogen, with the desired primary or secondary amine of the general Formula III <FORM:1032876/C2/3> or by reacting a compound of the general Formula VI <FORM:1032876/C2/4> wherein p is an integer of from 3 to 5, with an amine of the general Formula III.  Compounds of the general Formula II are prepared by reacting a compound of the general Formula IV <FORM:1032876/C2/5> with an o -halo-alkanoyl halide of the general Formula V <FORM:1032876/C2/6> wherein X represents a chlorine or bromine atom. Compounds of the general Formula IV can be prepared in the following manner: pipecolinic acid alkyl esters are converted, by means of o-nitrobenzyl-halides, to pipecolinic acid o-nitrobenzyl esters, these are converted by reduction of the nitro group into the pipecolinic acid o-aminobenzyl esters, which, in their turn, are converted into 1,2,3,11,12,12a-hexahydro(4H,6H)pyrido[2,1-c][1,4] benzodiazepine-12-ones of the general Formula VII <FORM:1032876/C2/7> by saponification and ring closure.  The reduction of the compounds so obtained with lithium aluminium hydride leads to the desired compounds of the general Formula IV.  In an analogeous reaction series, such as described just above, the 1,2,3,11,12,12a - hexahydro-(4H,6H)pyrido[2,1-c][1,4]benzodiazepine - 6,12-diones of the general Formula VIII <FORM:1032876/C2/8> are obtained starting from pipecolinic acid alkyl esters and o-nitro-benzoylhalides and the reduction of the compounds so obtained with lithium aluminium hydride leads to the starting materials of the general Formula IV.  Compounds of general Formula VI are prepared by reacting the compounds of general Formula IV with a halogenide of an o -alkenoic acid. Pharmaceutical compositions contain as active ingredients a compound of Formula I or a non-toxic acid addition salt thereof with at least one pharmaceutically acceptable carrier.  They have analgesic, hypotensive, local anaesthetic, tranquillizing and anti-inflammatory activity.
Patent GB-612562-A (GB)
Title: Improvements relating to supply equipment for electric arcs
IPC: H05B31/00
Filed: 1946-05-27
Abstract: 612,562. Supply systems for lighting arcs. ELECTRIC CONSTRUCTION CO., Ltd., and MILNE, J. C. May 27, 1946, No. 16057. [Class 38 (iv)] . A pair of projection arcs A1, A2 is supplied through a transformer and a rectifier R, the transformer comprising a single primary winding P and two secondary windings S1, S2 operating in phase opposition and separately feeding the arcs, each through the respective sets of electrodes aa1-ac1 and aa2-ac2 of the rectifier. The secondary windings may be spaced on either side of the primary winding to provide ballast action for steadying the arcs. In the arrangement shown, an alternator A supplies the primary winding, which is delta connected, whilst further secondary windings SW, F1, F2 provide for the energization of the starting circuit of the rectifier and for the operation of a cooling motor. Arc A1 is initiated by bringing the carbons into contact and closing button SB1. Starting contactor SC1 picks up, locks in, energizes anodes aa1- ac1 over resistors ra1-rc1 and energizes the starting coil SC over contacts ec1, erI and the carbons. Closure of button RB1 then energizes the " running contactor RC1 to short out the anode resistors. Relay ER is energized by the arc current and opens its contacts er1  to interrupt the starting circuit. Arc A2 is similarly controlled by starting and "running"  contactors SC2, RC2.
Patent GB-568827-A (GB)
Title: Improvements in and relating to electric temperature control apparatus
IPC: H05B1/02
Filed: 1943-10-01
Abstract: 568,827. Electric blankets. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 1, 1943, No. 16105. Convention date, Oct. 1, 1942. [Class 40 (i)] In a system in which the heating circuit of an electric blanket is periodically opened and closed by a thermal switch which comprises a bimetallic strip 9 exposed to the ambient temperature and co-operating with a contact 10, the strip being heated by a coil 11 while the circuit is closed, an adjustable rheostat 14 is arranged to be connected in parallel with the coil 11 at predetermined times of the day by means of a clock-driven slider 18 so as to decrease the effect of a given blanket current on the bimetallic strip and thus increase the heat input to the blanket. As shown, the rheostat 14 consists of a resistance wire 16 wound on one quadrant of a ring 17 in series with a flat contact 20 occupying an adjacent quadrant. The slider 18 makes a revolution in twenty-four hours, so that in a period of twelve hours the shunt resistance is gradually reduced for the first six hours and is then maintained at its minimum value. The ring 17 is adjustable to determine when the shunt is to be operative. The shunt may also include a threeposition rheostat 23 by which the user may determine whether the additional heat shall be a small, medium or large increase over the normal.
Patent GB-809313-A (GB)
Title: Organosilicon compounds
IPC: C07F7/18
Filed: 1957-05-22
Abstract: The invention comprises organosilicon compounds which are (1) silanes of the formula R3-xXxSi(CH2)mO(CH2)nCN where R is a monovalent hydrocarbon radical free from aliphatic unsaturation, X is chlorine or bromine or an alkoxy radical having 1 to 3 carbon atoms, x is 0, 1, 2 or 3, m is 3 to 18 and n is 2 to 17; and (2) siloxanes having the unit formula <FORM:0809313/IV (a)/1> where z is 0, 1 or 2; and (3) copolymers consisting of the units defined in (2) and units of the formula <FORM:0809313/IV (a)/2> where R1 is a monovalent hydrocarbon or halogenated hydrocarbon radical and r is 0, 1, 2 or 3. The silanes may be prepared by reacting hydrogen silanes R3-x XxSiH with compounds of the formula CH2=CH(CH2)yO(CH2)nCN where y is 1 to 16, in the presence of chloroplatinic acid as catalyst (cf. Specification 804,097).  The siloxanes may be prepared by hydrolysis or cohydrolysis of the silanes; or certain polymers may be prepared by reacting a silane of the formula RSiH3 with the CH2=CH(CH2)yO(CH2)nCN compound in the presence of an organic peroxide such that only one of the silane hydrogens is replaced and then hydrolysing the remaining two hydrogen atoms; or a corresponding polysiloxane containing silicon-bonded hydrogen may be reacted with the unsubstituted cyanoalkoxy reactant using chloroplatinic acid as catalyst; and the copolymers may also be prepared by conventional copolymerization methods.  The monomers and the liquid polymers can be used as lubricants and hydraulic fluids, and when the monomers contain hydrolysable groups they can be used to render materials water-repellent.  The polymers may also be resinous or rubbery, the usual curing agents being used for the rubbers.  All the products may be reacted to convert the nitrile group, e.g. to amide or carboxylic groups.  The examples describe the preparation of: (1) [3-(2-cyanoethoxy)-propyl] methyldichlorosilane and the analogous compounds Me(iso-PrO)2 Si(CH2)3O(CH2)2CN, Br3Si(CH2)3O(CH2)2CN, MePh(EtO)Si(CH2)3O(CH2)2CN and Me3Si (CH2)3O(CH2)2CN; (2) siloxanes of unit formula OSiMe[(CH2)3O(CH2)2CN], and O1.5Si (CH2)3O(CH2)2CN, and the disiloxane [MePh [NC(CH2)2O(CH2)3]Si]2O; (3) EtCl2Si(CH2)18O (CH2)2CN; (4) MeCl2Si(CH2)3O(CH2)17CN; (5) a copolymer containing the units Me2SiO and OSiMe[CH2)3O(CH2)2CN]; (6) a liquid of average formula Me3SiO[MeSi[(CH2)3O(CH2)2 CN]O]10SiMe3; (7) a copolymer containing the units OSiMe[(CH2)3O(CH2)2CN], ViSiO1.5, MeSi O1.5, ClC6H4MeSiO and C18H37MeSiO; (8) the silane Me2PhSi(CH2)2O(CH2)2CN.