baber/WOPTO huggingface dataset:
Patent GB-167468-A (GB)
Title: Improvements in electric relays
IPC: H01H71/26
Filed: 1921-07-19
Abstract: 167,468. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Jennings, O. S.). Aug. 6, 1920, [Convention date]. Electromagnetic switches; protective arrangements.-An electromagnetic relay has a number of differentially-wound windings of material having different temperature coefficients of resistance so chosen, that, with normal current through them, they counterbalance but with abnormally high or low current the ampere-turns of the windings become different owing to increase or decrease of resistance and the relay is operated. The relay reproduces substantially the same temperature conditions that obtain in the electrical apparatus to be protected. As shown in Fig. 2, the winding 20 of copper and the winding 21 of phosphor-bronze are wound upon the insulating tube 11 between conducting end-caps 15, 16 which enable the relay to be placed between clip contacts like a plug fuze, the windings being connected in parallel between the caps. Within the tube a hollow split core 8 is fixed and through the core a non-magnetic contact rod 10 passes and is pressed on to a fixed contact 18 by an adjustable spring 13. The rod carries a spool-shaped armature 9. The circuit connections are shown in Fig. 3, the relay contacts 12, 18 being arranged in the holding-on circuit of the main circuit-breaker. When the balance of the windings is upset by an increase or decrease of current from the normal, the armature 9 and rod 10 are lifted and the relay circuit broken, thereby releasing the main circuit-breaker.
Patent GB-420182-A (GB)
Title: Electric circuit breaking apparatus
IPC: H01H9/10
Filed: 1933-07-10
Abstract: 420,182. Arc-rupturing in switches. ELLIS, G. B., 70, Chancery Lane, London.- (Metropolitan Device Corporation ; 1250, Atlantic Avenue, Brooklyn, New York, U.S.A.) July 10, 1933, No. 19502. [Class 38 (v)] Protective arrangements.- Circuit-breaking apparatus comprises a relay-operated switch 7, which is shunted by a light fuse 5 at which circuit is broken, and is in series with a heavy fuse 6 for instantly disconnecting short-circuits. The switch 7 may have three series or parallel breaks, and may be responsive to overload or reverse current or energy. The heavy fuse is rated at at least 10 per cent above, but is preferably of ten times, the normal current capacity of the circuit. Fig. 3 shows a construction in which the fuse 6 is in three parallel parts in a block 18, each being connected to appropriate contacts 16 which are separable from fixed contacts 15 by raising the barrier 19 for replacement of the fuses. An insulating, box-like barrier 21 normally has its flanges 23 resting on the leads 17, but, on blowing of the fuses, drops down and covers the holes in block 18. The light fuse 5, Figs. 7 and 9, is in three parts, only one of which is in use at a time. Three barriers 33 carry the fuses and are released one after another as required, by a solenoid and latch 37 to fall into the circuitclosing position shown in Fig. 7 The fixed contacts 30 are connected to leads 28 by connectors 29 and are separated by barriers 36. The relay-, or mechanically-operated switch has a similar latch arrangement 50, 51 (Fig. 10) for tripping closed, and can be opened by the handle 49 separating bridge contact 46 from contacts 45. Spring-urged arcing barriers 53 enter recesses 55 when the contacts separate, and are pressed back by cams 57, 58 automatically when the contacts are being closed. The fuses may be any or all of the character disclosed in Specification 393,951.
Patent GB-596617-A (GB)
Title: Resonant circuits for panoramic radio receivers
IPC: H03J7/32
Filed: 1945-07-30
Abstract: 596,617. Wireless receiving systems ; impedance networks. STANDARD TELEPHONES & CABLES, Ltd. July 30, 1945, No. 19540. Convention date, May 7, 1943. [Classes 40 (iii) and 40 (v)] [Also in Groups XXXV and XXXVI] A timing-circuit for a panoramic receiver comprises the secondary S1, S2 of an aerial transformer whose inductance is varied by a revolving disc 24 with a tapered copper strip 27 and a uniform copper strip 29, the former giving a frequency sweep while the latter gives a steady frequency which can be selected by means of the condenser 26. Alternatively, the strips 27, 29 may be mounted on the surface of a revolving cylinder, Figs. 5, 6 (not shown), or the tapered strip 27 may be replaced by two tapered masses, one of copper and the other of iron dust, the former decreasing the inductance while the latter increases it, Fig. 7 (not shown). In this case the uniform strip 29 is unnecessary. Alternatively, the inductance is constant and the condenser 26 is shunted by a condenser comprising a pair of stator plates 36, Fig. 8, with a shaped rotor plate 42 revolving between them. In synchronism with the changes of frequency, square waves are generated at 20 and are applied to the Y plates of a cathode-ray oscillograph 16 with the signals superimposed, so that the panoramic reception is seen at EF and the reception of selected frequency at GH, saw-toothed waves being generated at 22 and applied to the X plates. Traces EH, FG corresponding to the changes from panoramic to steady reception and vice versa, may be eliminated or shortened by vignetting, reducing the scanning speed at the end of the sweep or suppression of the cathode stream.
Patent GB-460827-A (GB)
Title: Torque responsive device in automatic change speed gear mechanisms
IPC: F16H61/02
Filed: 1935-07-29
Abstract: 460,827. Controlling change speed gearing. SCHOU, C. E. J. July 29, 1935, No. 19566/36. Divided out of 460,770 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 29, 1936. [Class 80 (ii)] Torque-responsive speed-changing mechanism comprises a helical gear wheel 1 the reaction at the teeth of which is a varying axial force causing the wheel 1 to yield axially upon antifriction splines comprising rows of balls 8 with springs 10 at both ends of each row. Axial displacement of the wheel 1 due to changes in torque are communicated through links 19 to a lever 22 acting on a sleeve 23 controlling alternative spring-engaged gear clutches suitably as described in Specification 457,023. A complete change-speed gear suitable for vehicles embodying this control is described in Specification 460,770.
Patent GB-696222-A (GB)
Title: Improvements in or relating to electrical circuits
Inventor: CARPENTER HENRY GEORGE
IPC: H03K19/12
Filed: 1950-08-04
Abstract: 696,222. Digital electric calculating apparatus. ELLIOTT BROS. (LONDON), Ltd. Aug. 3, 1951 [Aug. 4, 1950], No. 19612/50. Class 106 (i). [Also in Group XL (c)] The Figure shows a coincidence and anticoincidence circuit for a digital computer in which an output pulse is produced at the coincidence output " C when pulses from generators A and B are present simultaneously and an output pulse is produced at the " anticoincidence output " A/C when a pulse is present at only one of the generators A or B. The pulse generators A and B have each a low output impedance which may comprise an output transformer and D.C. restoring circuit as described in Specification 693,116, [Group XL (c)]. When the pulse generators A and B produce a pulse simultaneously the positivegoing terminals of the generators move in a positive direction so that diodes V3, V4 conduct but as load resistor R has a low impedance only a small voltage pulse appears at J. The negative-going terminals of generators A and B will also move in a negative direction and a negative output pulse will be produced at the high impedance load at " coincidence output " C. Thus an output pulse appears only at the " coincidence output " terminal C. When only one generator, say A, produces an output pulse, the negative terminal of that generator will be prevented from moving in a negative direction by the low impedance to earth via generator B, the positive-going terminal of which is prevented from moving negative to earth by its associated diode V2. Thus a positive pulse will be produced at the " anti-coincidence output " A/C.
Patent GB-1056913-A (GB)
Title: Improvements in or relating to conveyor systems
IPC: B61B10/04
Filed: 1964-05-12
Abstract: 1,056,913. Conveyers. BRITISH UNITED SHOE MACHINERY CO. Ltd. May 12, 1964 [May 14, 1963; Aug. 12, 1963; Oct. 7, 1963], No. 19633/64. Heading B7L. A conveyer system has two conveyer runs 18, 20, Fig. 1, and a transfer zone 40 with a control device CD ensuring that floor trucks 12 pass one at a time through zone 40. A chain 14 having towing dogs 30 travels along runs 18, 20 in guides 35 which have an upstanding rail 36, Fig. 2; a rail 58 in zone 40 has its upper edge 64 at a higher level than the edge 62 of rails 36. The transfer mechanism comprises a member 66 on a sprocket 46 driven from the chain 14 through sprockets &c. 13, 42, 54, 50, 48, 56 so that sprocket 46 rotates at about <SP>1</SP>/ 5 th of the speed of sprocket 13. Each truck 12, Fig. 4, has a towing plate 26 on an arm 24 pivoted to frame 22 by pin 25; a roller 34 on plate 26 runs on rail 36 to locate the plate in the towing position and on rail 58 to hold the plate in the inoperative position in zone 40, wherein member 66 engages a portion 28 of plate 26 to propel the truck through zone 40. A crash bar 70 is moved rearwardly when, for example, two trucks abut, to raise plate 26 to its inoperative position. A control device CD comprises a plate 98, Fig. 10, similar in shape to plate 68, Fig. 7 (not shown), pivoted at 99 to bed plate 100 and members 102 and 104 pivoted to plate 100 at 106; a torsion spring 116 connected to members 102, 104 urges member 102 clockwise, in Fig. 10, and member 104 anti-clockwise. A spring 107 biases plate 98 to its inoperative position where part 32 of the truck towing plate 26 passes the plate 98. With no truck in zone 40 the control device is as shown in Fig. 12, and the plate 26 of a passing truck 12 engages arm 110 to rotate member 104 which through arm 112 rotates plate 98 clockwise until it engages in slot 108 in member 102, Fig. 10. This is the stop position and the part 32 of towing plate 26 of a following truck rides up the face 97 of plate 98 to disengage drive to the truck and engages step 95 on plate 98 to stop the truck. As one truck 12 leaves zone 40, the part 32 of plate 26 engages an upstanding portion 114 of member 102 to rotate it anticlockwise to free plate 98, whereby spring 107 moves it to its pass position. The conveyer system also includes two stops, Fig. 1, to create pools P1, P2 of trucks, each stop comprises a plate 68, Fig. 7 (not shown), similarly Operated to plate 97 but the member 102 is moved by an electromagnet to allow the plate 68 to be moved by a spring to its pass position, the electromagnets being controlled by manual switches S1 S2, Fig. 1. The control device CD may be controlled by an electromagnet operated by a microswitch or photo-electric cells. Figs. 14-17 (not shown).
Patent GB-721246-A (GB)
Title: Control mechanism and apparatus for an ice-eliminating system having inflatable members and electric heater elements
IPC: B64D15/14
Filed: 1952-08-06
Abstract: 721,246. Electrically-heated de-icing systems; current supply. BENDIX AVIATION CORPORATION. Aug. 6, 1952 [Aug: 10, 1951], No. 19835/52. Class 39 (3) In an ice-eliminating system for aircraft comprising two sets of electric resistance heaters 34 at the aerofoil surfaces and two generators 35, 37, one for each set of heaters, switch means 54, 56 are arranged to transfer the connections of the generators from one to the other set of heaters with a timing device, so that, should one generator fail, each set of heaters is alternately supplied for a predetermined time from the remaining generator. The heaters 34 are continuously energized resistances embedded in distortable members adapted to be inflated and deflated in order to remove ice. A timing arrangement 69 inflates and deflates the members in'sequence. The switch means for the heaters is controlled by a relay 50, the winding of which is connected to the timing arrangement 69 by a manual control switch 65 operated when the failure of a generator is indicated by a lamp 48. The arm 64 of switch 65 normally contacting contact 74 is then moved manually to contact 62, whereby a control winding 52 of a reversing relay 50 is connected to contacts 68A-F of the timer, so that the winding is energized half the time, thereby transferring the other generator through relay switches 54, 56 to each bank in turn. The timer 69 is as in Specification 655,437, [Group XL(c)]. Specifications 621,490, 621,497 and 646,737, [all in Group XXXIII], also are referred to.
Patent GB-1466739-A (GB)
Title: Process for treating gas mixtures
IPC: B01D53/48
Filed: 1974-05-06
Abstract: 1466739 Separating gases with a polyglycol ether ALLIED CHEMICAL CORP 6 May 1974 [10 May 1973] 19872/74 Heading B1L A combustible gas containing an acid gas which is H 2 S and/or CO 2  and a minor amount of a normally liquid contaminant which is an aromatic hydrocarbon, a non-acid sulphur compound and/or HCN is contacted with a di-(C 1 -C 8 ) alkyl ether of a polyethylene glycol having 3-8 ethylene units to absorb at least a major portion of the contaminant and a portion of the acid gas, the contaminant and acid gas being evaporated from the solvent and the resulting vapour cooled to separate the contaminant and acid gas by condensation.
Patent GB-1500380-A (GB)
Title: Threading tap
IPC: B23G5/20
Filed: 1975-05-12
Abstract: 1500380 Taps; cutting tools HITACHI METALS Ltd 12 May 1975 19895/75 Headings B3N and B3C A tap has cutting edges 7 on its leading end for cleaning obstructions in, or enlarging, the hole to be tapped, especially in cast pipe joints. End cutting edges 7 meet chamfer 6, at the end of thread cutting edges 5, at an apex 8 and are inclined to a plane perpendicular to the tap axis at an angle a which is desirably from 1 degree 30 minutes to 5 degrees. Edges 5 and 7 may also lie in a plane inclined to a radial plane at an angle # similar to angle α in amount.
Patent GB-806140-A (GB)
Title: Improvements in and relating to supporting devices for telephones, typewriters or radio receivers
IPC: H04M1/11
Filed: 1957-06-25
Abstract: 806,140. Supporting telephone sets. UNITEDCARR FASTENER CORPORATION. June 25, 1957 [July 3, 1956], No. 20019/57. Class 40 (4). [Also in Group XIV] A support for telephone sets consists of a member 16 attached to the base 12 of the set and having a recess 24 in its upper surface in which lies a resilient body 18 having parts 30 which extend through apertures 26 in the base of the recess and engage the supporting surface. As shown, the member 16 has upward extensions 32 which take into a socket in the base 12 and are spread out by a rod 36 but in a modification the support is held in place by a screw.
Patent GB-810426-A (GB)
Title: Improvements in or relating to floor conveyors
Inventor: BURROWS ARTHUR THOMAS CHARLES
IPC: B61B10/04
Filed: 1956-06-28
Abstract: 810,426. Conveyers. KING Ltd., G. W. June 21, 1957 [June 28, 1956], No. 20064/56. Class 104 (2). In a float conveyer comprising a trolley 11 having wheels 12 running on tracks 10 and driven by dogs 14 on an endless driven chain 13 the trolley has one or more central rollers 16 which run along a ramp 17 eccentrically positioned between the tracks at a bend so that the trolley wheels 12 are raised out of contact with the tracks 10. The rollers 16 may be assisted to reduce frictional drag by rollers on the ramp, by greasing the ramp, by hinged spring tongues or by lightly centring the rollers by springs. The ends of the ramp may be cut away to allow passage of the driving dogs and roller supporting strips 17a provided. Specification 807,802 is referred to.
Patent GB-204310-A (GB)
IPC: F16D65/28
Filed: 1923-08-07
Abstract: 204,310. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Craig, J. F.). Sept. 22, 1922, [Convention date]. Brakes, arrangement and disposition of.-The force-transmitting mechanism of a fluid-pressure brake more particularly adapted for the front wheels of a motor-vehicle comprises a universal joint one element of which is capable of axial displacement relative to the rod on which it is supported. The brake chamber 11 is supported by a bracket 13 hingedly mounted on the frame 10, and the bracket carries a rod 18, which slides in and supports a sleeve 15, connected through a universal joint 16 and a stem 17 with the cam 6 - which expands the brake shoes 5. The sleeve 15 is rocked to apply the brakes by an arm 19, Fig. 3, which has a ball-and-socket connection 20 with the stem 12 of the brake chamber.
Patent GB-587954-A (GB)
Title: Improvements in or relating to cross-connection strips as used in telephone and likesystems
IPC: H04Q1/14
Filed: 1944-10-18
Abstract: 587,954. Distribution boards and panels ; binding-posts. HUMPHRIES, A. J. Oct. 18, 1944, No. 20193. [Class 38 (i)] A cross-connection strip suitable for telephone distribution systems comprises a pair of terminal blocks 11, 12 in the form of insulating housings, having recesses 20 in each of which a pair of terminals 22, 23 is housed opposite each other so that straight bare wire connections can be made between them. Each terminal pair comprises an insulating, shouldered, pressure-block 21, Fig. 12, which is pressed by a screw 15, threaded in a brass-insert 18a, upon the serrated surfaces of two chamfered contact plates constituting the terminal pairs 22, 23, which have soldering tags 16. The brass-inserts lie in holes 18 in the terminal blocks which are spaced apart by blocks 13, 14. The block 13 is rectangular and hollow and has metal inserts 42 for securing a label plate 43. The block 14 has bosses to fit in recesses 34 in the terminal blocks 11, 12 and grooves which align with holes 29, 30 formed in the blocks 11, 12. The whole assembly is secured together by clamping-rods 33a passing through recesses 34. External connections are made by inserting the opposite ends of leads through the holes 29, 30 of the pairs of contacts after the screws 15 have been slackened. The lead-ends raise the pressure-block 21 and are then clamped between it and the serrated edges by tightening the screw. Contact is made from the assembly on one side by inserting the bare conductors in holes 29, 30 and carrying the lead through the grooves in the block 14, into the other assembly. Modifications include milledheaded screws 15, and arranging the brass-insert 18a below the pressure-block, the screw passing through to lift it.
Patent GB-701128-A (GB)
Title: Process for the reduction of aromatic nitrogen compounds
Filed: 1951-08-29
Abstract: Aromatic compounds containing nitrogen at a higher state of oxidation than hydrazo attached directly to the nucleus are reduced by metal alcoholates in the presence of a naphthoquinone or addition product or functional derivative thereof.  Preferably the reducible nitrogen compound is added to a mixture of the other components, e.g. the naphthoquinone is mixed with the alcohol, metal hydroxide added to form the alcoholate in situ and the mixture then reacted with the nitrogen compound.  The naphthoquinone may be present to the extent of 1/36th to 1/300th mol. per mol. of nitrogen compound.  The preferred alcoholate is sodium methylate.  In the examples, (1) nitrobenzene is reduced to azoxybenzene, azobenzene and hydrazobenzene (converted into benzidine); (2) o-nitrotoluene is reduced to o-azoxytoluene, o-azotoluene, o-hydrazotoluene and o-toluidine; (3) o-nitroanisole is reduced to o-azoxyanisole, o-azoanisole, o-hydrazoanisole (converted into o-dianisidine) and o-anisidine; (4) azobenzene is reduced to hydrazobenzene; (5) a mixture of azobenzene and azoxybenzene is reduced to azobenzene and hydrazobenzene (converted into benzidine and diphenylines); (6) a mixture of o-azotoluene and o-azoxytoluene is reduced to o-hydrazotoluene (converted into o-tolidine) and o-toluidine. Other specified products are 2:21-dichlorohydrazobenzene and 2:21-diethoxyhydrazobenzene from o-nitrochlorobenzene and o-nitrophenetole respectively. m-Nitroluene, m-nitrochlorobenzene, onitrobenzoic acid and o-nitrobenzenesulphonic acid may also be reduced.  The naphthoquinone compounds used in the examples are:-1:4-naphthoquinone and its addition products with sodium bisulphite, potassium bisulphite, stannic chloride and antimony pentachloride; the addition products of 2-methyl - 1:4 - naphthoquinone with sodium bisulphite, potassium bisulphite and p antimony pentachloride; 1 : 4 - naphthoquinones, substituted in the 2-position by methylamino, anilino, ethanolamino, diethanolamino, hydroxy and sulphonic acid groups; 2:3-dichloro-1:4-naphthoquinone and its addition product with antimony pentachloride; 1:2-naphthoquinone.  Other suitable naphthoquinone compounds are listed.  An inert solvent may be present in the reaction mixture. Addition products of naphthoquinones with organic and inorganic bisulphites are prepared as in Specification 547,913 and U.S.A. Specification 2,331,808.  Specified bisulphites are those of lithium, sodium, potassium, ammonium, calcium, methylamine, dimethylamine, trimethylamine, ethylamine, propylamine, butylamine, amylamine, hexylamine, benzylamine, ethanolamine and diethyl-e thanolamine.  The reaction may take place in the presence of an alcohol such as methanol.  2-Substituted-1:4-naphthoquinones where the 2-substituent is methylamino, anilino, ethanolamino or diethanolamino are prepared by reacting 1:4-naphthoquinone with methylamine, aniline, or mono- or di-ethanolamine.
Patent GB-1466839-A (GB)
Title: Substituted phenylguanidines a process for their preparation and their use as medicaments
IPC: C07C277/08
Filed: 1975-05-14
Abstract: 1466839 Phenylguanidine derivatives BAYER AG 14 May 1975 [15 May 1974 18 Dec 1974] 20362/75 Heading C2C Novel compounds I (R and R<SP>1</SP> are different and one is -COR<SP>4</SP>, the other -C(NHCOR<SP>6</SP>)=NCOOR<SP>5</SP>; R<SP>4</SP> is H or an optionally substituted alkyl, cycloalkyl, aryl, amino, alkoxy or aralkyl group; R<SP>5</SP> is an optionally substituted alkyl, alkenyl or alkynyl group; R<SP>6</SP> is H or an optionally substituted alkyl, cycloalkyl, alkoxy, alkenyloxy, alkynyloxy, aryl, aralkyl, alkenyl or alkynyl group; R<SP>2</SP> and R<SP>3</SP> are H, halo, CN, haloalkyl, or an optionally substituted alkyl, alkoxy, amino, alkylthio, acyl or carbalkoxy group; and X is O, S, SO or SO 2 ) are prepared by reaction of a substituted aniline derivative II with an isothiourea III (R<SP>7</SP> is 1-4C alkyl) in the presence of a diluent or by oxidation of a compound I in which X is S to give one in which X is SO or SO 2 . Pharmaceutical compositions, useful as anthelmintics, for oral or parenteral administration comprise a compound I together with a suitable carrier.
Patent GB-819490-A (GB)
Title: Improvements in or relating to carrier communication systems
IPC: H04B3/18
Filed: 1956-07-02
Abstract: 819,490. Semi-conductor impedance converter circuits. GENERAL ELECTRIC CO. Ltd., FEY, L. J., and THOMAS, E. R. Oct. 2, 1957 [July 2, 1956], No. 20424/56. Class 40 (6). [Also in Group XXXIX] A negative impedance converter comprises two transistors 9, 10, back-coupled from their collector to their base via transformer 7 a network 4 being connected between their collectors. The impedance looking into the transformer 12 whose secondary winding 13 is connected between the emitters is a negative version of the impedance of network 4 with a numerical factor determined by the turns ratio of the transformer 12. Resistance 29 and inductance 28 compensate for winding resistance and leakage inductance of the transformer 12, the instability introduced by these elements being reduced by the addition of the condenser 30. In a further converter, Fig. 3 (not shown), a network such as 4 is placed on the primary side of transformer 12 and the negative impedance is obtained across terminals such as 21. The two converters are used in series and in shunt to form a repeater for a two-wire line carrying a carrier telephone system (see Group XXXIX).