baber/WOPTO huggingface dataset:
Patent GB-592328-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03K11/00
Filed: 1945-05-17
Abstract: 592,328. Multiplex pulse signalling. McDERMOTT, T. J. May 17, 1945, No. 12503. [Class 40 (v)] [Also in Group XXXV] Relates to circuits for converting timemodulated pulses into duration-modulated pulses which may be used for demodulating the channel pulses in a multiplex system. Applied to such a system valve V1 is common to all the channels and a separate valve V2 is provided for each channel, their anodes and suppressor grids being all connected in parallel to the points XX. In the one channel circuit shown, a gating pulse of such a waveform as to unblock V2 for the period during which a channel pulse may arrive is applied through condenser C4 to its control grid, which is normally biassed to cut-off. For the first portion of the gate-pulse period current flows to the screen grid, the suppressor grid being biassed to cut-off by the charge on condenser C1. All the negative channel pulses are applied to the control grid of V1 and when a pulse of the channel in question cuts off the normally conducting V1, a positive pulse from its anode is fed through C1 to the suppressor grid of V2, diverting some of the screen grid current to the anode. The drop in anode voltage is fed through condenser C2 to the suppressor grid of V1 to maintain anode-current cut-off in V1. The resulting rectangular pulses at the anode of V2, or stepped pulses at the screen grid, are duration modulated, being terminated by the cessation of the gate pulse on the control grid and the reversion of the circuit to its quiescent condition. As shown, the screen grid pulses are fed through condenser C3 to a low-pass filter cutting off the pulse recurrence frequency and yielding the modulating signal. Specifications 588,416 and 588,417 are referred to.
Patent GB-814750-A (GB)
Title: Improvements in or relating to rotary electric components
Inventor: HERRICK PETER ROBERT
IPC: H01H21/24
Filed: 1956-04-24
Abstract: 814,750. Retractive switches. A.B. METAL PRODUCTS Ltd. March 20, 1957 [April 24, 1956], No, 12550/56. Class 38 (5). The housing 4 of a retractive spring 3 of a rotary switch has lugs 5 which may be arranged in any opposite pair of a number of holes in an end-plate 7, so as to adjust the initial tension of the spring. The spring is attached at one end to the shaft 1 and at the other to the housing 4.
Patent GB-1273144-A (GB)
Title: Improvements relating to methods for producing electrical resistors and resistors so produced
Inventor: SIVYER RAYMOND FRANK
IPC: H01C17/23
Filed: 1968-03-15
Abstract: 1,273,144. Resistors. E.M.I. Ltd. 13 June, 1969 [15 March, 1968], No. 12589/68. Heading H1S. A strip of resistive material 2 is formed on an insulating support and a conductive terminal 3, of copper for example, is formed at one end. The resistance is measured between the terminal 3 and a probe moved along the strip until a desired value is found at a position marked at 5. Conductive material is then applied between the mark and the other end of the strip. Thus the strip may be masked up to the mark and copper applied electrolytically. The strips 2 may be of stainless steel or " Eureka " (Registered Trade Mark) on a support of glass fibre reinforced epoxy resin.
Patent GB-905148-A (GB)
Title: Improvements in or relating to electric motors especially for hand applied drilling and like rotary tool devices
IPC: H02K7/08
Filed: 1961-04-07
Abstract: 905,148. Insulation for dynamo electric machines. BOSCH G.m.b.H., ROBERT. April 7, 1961 [April 9, 1960], No. 12605/61. Class 35. An electric motor in which at least one end of the stator winding 14a, 14b is covered by a strip of insulating material 15 wound in the circumferential direction of the stator, the edge of the strip extending beyond the end of the winding in an axial direction and being folded inwardly against the pole bore and held there by an insulating tube 20 fitted into the space formed by the end of the stator winding so that it is coaxial with the pole bore. The motor, which is for a portable tool, has a shorted armature and is fed from a three-phase high-frequency supply.
Patent GB-969904-A (GB)
Title: 11ª‰-and 14ª‡-hydroxylated 16ª‡-methyl steroids and process for their manufacture
IPC: C12P33/08
Filed: 1961-04-07
Abstract: The invention comprises 16a -methyl-corticosterone, 16a -methyl-11b , 17a -hydroxyprogesterone, 16a -methyl-4-pregnene-14a , 17a , 21-triol-3, 20-dione and 16a -methyl-4-pregnene-14a -17a , 21-triol-3, 20-dione-21-acetate and the corresponding 1, 4-pregnadienes, 16a -methyl-4-pregnene-14a , 21-diol-3, 20-dione and the 21-acetate thereof, a process for the manufacture of 11b -hydroxylated 16a -methyl-steroids, wherein a compound of the pregnane series containing a methyl group in 16a -position is subjected to the action of Curuularialunata, or an enzyme produced therefrom, and a process of subjecting a compound of the general formula: <FORM:0969904/C1/1> in which R is hydrogen, a hydroxyl group or an acyloxy group and the bond in 1,2-position may be saturated or unsaturated, to the action of a microorganism, or an enzyme produced therefrom of the genus Curvularia or Helicostylum to obtain a compound of the general formula <FORM:0969904/C1/2> in which R is hydrogen or a hydroxyl group, and the carbon-carbon bond in 1,2-position may be saturated or unsaturated.  The compounds in which the bond in 1,2-position is saturated may be dehydrogenated microbiologically by means of Bacillus lentus.  The 14-hydroxylated compounds obtained may be separated from compound hydroxylated in other positions by crystallizing the latter from a solution of all of them and subjecting the mother liquor to chromatography.
Patent GB-933457-A (GB)
Title: A process for the production of cyclopropane hydrocarbons
IPC: C07F5/02
Filed: 1961-04-07
Abstract: Cyclopropane hydrocarbons are obtained from a 3-halogenoalkyl boron in the presence of an alkali or alkaline earth metal hydride or alkyl or complex thereof with a compound of a Group III element (Me) of the formula Me Y3 in which Y is hydrogen, hydrocarbon, alkoxy or aryloxy, the reaction being effected in the absence of air or oxygen, the reaction forms as by-products, boron hydride, boron hydrocarbons or diboranes or, in the presence of tertiary amines, N-trisubstituted borazanes.  The boron compound contains the functional group -CR2-CR2-CR2X attached to boron, the other two boron valencies being satisfied by like or unlike groups including hydrogen and cyclic groups, where X is chlorine, bromine or iodine and each R is like or unlike being hydrogen or hydrocarbon which may be interconnected, and is formed by the reaction of the corresponding allyl halide or substituted allyl halide on boron hydride or the diborane obtained in the cyclopropane-forming reaction.  Suitable solvents are paraffinic and aromatic hydrocarbons, dimethyl ethers of di- and triethylene glycol, tetrahydrofuran and, when a boron compound is used as the complexing agent MeY3, excess of this complexing agent.  The examples describe the preparations of (1) methyl cyclopropane, (3) n-propylcyclopropane, (4) cis- and trans-1-methyl-2-ethyl-cyclopropane (1:1 molar ratio), (5) cyclopropane.
Patent GB-1130697-A (GB)
Title: Improvements relating to support structures for electrical transmission lines
IPC: H02G7/20
Filed: 1967-03-17
Abstract: 1,130,697. Post attachments. AUTOMATED BUILDING COMPONENTS Inc. 17 March, 1967 [29 June, 1966], No. 12762/67. Heading E1B. [Also in Division H2] In a bonding arrangement for a wooden post 62 and cross-arms 64, 66, carrying insulators 68, 70 which support electrical transmission lines (not shown), conductive metal plates such as 84, 88, 90 are shunted across regions of relatively high resistance on the post and cross-arms, being attached thereto by integral nail-like teeth, in order to reduce the risk of fire and burn damage by leakage currents in such regions. Each plate 84, &c., Fig. 8, is of the kind described in Specification 1,072,472 (Division F2), being made of mild steel, galvanized or uncoated, and having teeth 104 struck to protrude perpendicularly from the plate, the ends of the teeth in alternate rows 100, 102 being diagonally cut in opposite directions. The cross-arms 64, 66 are held on post 62 by a conductive bolt 16 which passes through vertical plates 84, and by braces such as 72, 74, 76. An angle brace 96 between the cross arms is preferably in electrical contact with plates 88, 90, the bonding between which is further improved by braided copper conductors 92, 94 which are clamped between the cross arms and the plates. In a modification (Figs. 10, 11, not shown) in which the pole and cross arms are provided with conventional bonding bands connected together and to the through bolt by jumper wires, two toothed plates are secured over each band on the post and four plates are equidistantly spaced around and secured over the bands on the cross arms.
Patent GB-184253-A (GB)
Title: Improvements in or relating to cranes
IPC: B66C23/10
Filed: 1921-05-05
Abstract: 184,253. Thornton, H. May 5, 1921. Jib cranes.-To ensure horizontal travel of the load, the load-rope G passes over a pulley I which moves towards or away from the mast C during luffing, and to balance the jib a counterweight P is mounted on a lever N pivoted on the mast and connected by links with the luffing-gear. The coffin-plate J of the luffing-gear is connected by a link L with the jib and by a link Q with a weighted slide S on the mast, the gear being actuated by a screwed rod R engaging with the slide. As shown, the pulley I for the load-rope is carried by a lever 0 pivoted on the mast and slides in guides J<1> in the coffin-plate J, and the lever N carrying the counterweight is connected by links M with the coffin-plate. In modifications, the pulley I and the counterweight are carried on a lever pivoted on the mast and connected by linkwork with the coffin-plate. The jib and mast together with a platform E and operating cabin F are supported by a latticed structure B erected near a wall.
Patent GB-1217777-A (GB)
Title: High-gloss paper
IPC: D21H19/46
Filed: 1968-03-15
Abstract: 1,217,777. High gloss coated paper. SHIZUKA KOGYO CO. Ltd. 15 March, 1968 [15 March, 1967], No. 12842/68. Heading B2E. A high gloss coated paper is prepared by either (I) coating a paper with a coating composition containing a sulphonamido carboxylic acid having the general formula: in which A is an alkyl group containing at least 5 carbon atoms or an alkyl substituted phenyl group containing at least 5 carbon atoms in the alkyl substituent and R is an alkylene group containing from 1 to 3 carbon atoms, or with a salt or ester of such acid, or (II) coating a paper previously coated with a conventional coating composition, with an aqueous composition containing the sulphonamido carboxylic acid or a salt or ester thereof. A may be an alkyl group having from 8-16 carbon atoms or an alkyl substituted phenyl group having from 8-12 carbon atoms in the alkyl substituent. The coating composition may contain a butadiene-methacrylic acid copolymer as the principle binder constituent thereof. The paper may be made of cellulosic fibres and synthetic fibres e.g. of polyvinyl alcohol, nylon, polyester, polypropylene and polyurethane fibres or mixtures thereof. The coating composition may contain known binders such as synthetic rubber latices or synthetic resin emulsions e.g. a butadienemethacrylic acid or butadiene-styrene copolymer, polyvinyl alcohol.
Patent GB-337405-A (GB)
Title: Improvements in or relating to the production of peroxydases from vegetable substances
IPC: C12N9/08
Filed: 1929-04-25
Abstract: 337,405. Sailer, W. April 25, 1929. Peroxydase, or peroxydase extracts, is obtained by treating vegetable substances containing peroxydase, such as embryos of rye, wheat, rice, maize, barley, &c., or parts of plants such as potatoes or beans, with water and allowing fermentation to take place in the presence of substances which in the solution form " buffer " substances, such as oxides, hydroxide, or carbonates of alkali, alkaline earth or other metals, e.g., zinc oxide, or metals not having a catalytic action. The solids are removed by filtration and the filtrate treated with a preserving agent such as alcohol, benzoic acid, or benzoic acid esters. Examples are given of the treatment of seed embryos of wheat, adding sodium bicarbonate, and of rye bran adding zinc oxide. Specification 250,907 is referred to.
Patent GB-572381-A (GB)
Title: Improvements in or connected with rangefinders, heightfinders and like optical measuring instruments operating on the coincidence principle
IPC: G03B13/06
Filed: 1940-08-14
Abstract: 572,381. Range-finders &c. BARR & STROUD, Ltd., and STRANG, J.M. Aug. 14, 1940, No. 12976. [Class 97 (i)] A second. eye-piece is provided in a coincidence range-finder &c. forming two overlapping images in the field of view, and rays normally lost at the transmitting and reflecting surface are directed thereto ; the instrument may be of short home base or distant base type and may be combined with a periscope. Fig. 2 shows the central prism system of a short home base instrument comprising prisms D<1>, D<2> receiving the beams from the ends of the base, and having roof faces 6, 7 and a semialuminised surface 4 partly reflecting and partly transmitting each beam. Reflecting prisms D<3>, D<4> transmit each part of each beam to one or other of two eye-pieces E. A modification is described in which the plane of the eye-piece axes is inclined to the range plane. Fig. 6 shows an instrument for measuring the parallax angle subtended by a distant base and having a semi-reflecting surface 19 in a prism system D<8>, the parts of the incoming beams 17, 18 being received by objectives 20 and transmitted to side-by-side eye-pieces E3 by prisms 21 ; a step prism 22 displaces laterally the beams received by it, and prisms 23 are rotatable for measurement. In a binocular periscope adapted for range finding, Fig. 8, prisms 27 direct beams to objectives 28 and prisms D<9>, D<10> having a semi-reflecting surface 24 and lenses 29. Range estimation may be effected by use of rotating prisms 30, by a movable deviating prism 31, or by differential rotation of the prisms 27.
Patent GB-495377-A (GB)
Title: Improvements in and relating to brakes for hoists and the like
IPC: B66C9/18
Filed: 1937-05-06
Abstract: 495,377. Brakes for overhead travellers. AABACAS ENGINEERING CO., Ltd., and COOPER, W. J. F. May 6, 1937, No. 12987. [Class 78 (iv)] [Also in Group XXXIV] A brake for a hoist, overhead traveller, travelling crane or other like track apparatus comprises a shoe e pivoted at f<1> to a lever b rocking about a fulcrum b<1>. The outer end of the lever b is engaged by the extension stem a4 of an armature a<1> moving toward an electromagnet or in a solenoid a which has the lower portion of its bore filled with a fixed magnetic core a<2>. The shoe e has a curvature the axis of which is located beyond the pivot f<1> so that after application of the brake any further movement of the traveller, which carries the solenoid a, will result in increased pressure of the tilted shoe e against the track or like member g. Springs f<3> bearing against arms b<1> fixed on the lever b position the shoe normally in its medial position. A spring d cushions the downward pull of the core a', and when the latter contacts with the stationary core a<2>, a strong electromagnetic holding effect is produced. Springs &c. may be provided to facilitate release of the brake. A modification is shown in which two shoes are provided, each carried by an adjustable arm furnished with a screw forming a tilt-limiting stop. One or the other of these shoes increases its grip with motion of the traveller after application of the brake by reducing the air gap between the stationary and movable cores of the single solenoid which operates both shoes. The solenoid is energized either from the load hoisting controller or from the travelling controller. In further forms the track rail is gripped between two shoes, and the power means may operate to hold the brakes out of contact with the track against the action of springs. Specification 478,320 is referred to.
Patent GB-853607-A (GB)
Title: Improvements in or relating to relay assemblies employing magnetic spring contacts in sealed protective tubes
IPC: H01H51/28
Filed: 1959-04-16
Abstract: 853,607. Electromagnetic relays. SIEMENS & HALSKE A.G. April 16, 1959 [May 6, 1958], No. 12995/59. Class 38 (5). A relay with contact devices comprising magnetic contact-springs in sealed tubes has two layers of such devices surrounded by an operating coil and a flux return member for each layer. As shown, the coil 2 is wound on a spool formed of two parts 3 held together by the coil 2. The ends of the contact-springs engage in carriers 5 which fit on projections 6 on extensions 4 of the parts 3. Flux return members 7 have their ends between the extensions 4 and insulated from the contact-springs by plates 8. Clamping-springs 9 pass round and hold together the members 5, 7, 8 and the contact-spring ends (Fig. 6), the extensions 4 being grooved at 16 for insertion of the springs 9. Conducting strips pass inside the spool so that all connections to the contacts can be made at one end of the relay. A polarizing permanent magnet 12 may be mounted between the layers of contact devices and may be slotted and sprung to fit in grooves 13 in the spool parts 3. The flux return members may be common to two or more relays (Fig. 7, not shown) and the contacts may be " normally open " or " change-over " contacts.
Patent GB-372093-A (GB)
Title: Improvements in or relating to electrically operated smokers' ignition devices
IPC: F23Q7/00
Filed: 1931-05-02
Abstract: 372,093. Electric igniters and couplings. RUSSELL, V. J. S. and SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., Cricklewood Works, Cricklewood, London. May 2, 1931, No. 13007. [Class 75 (iii).] In an igniter comprising a socket provided with a removable plug carrying on the inner side an electrical heater element with contact members for engaging terminal contacts within the socket, the plug is composed partially or wholly of transparent or translucent material so that the heater element i s visible when heated. As shown, the plug comprises a metal sleeve 30, screwed to receive an ornamental collar 31 and a glass knob 32. The heater element 34, comprising a resistance 40 mounted in a perforated plate 41, is held by the knob and a distancepiece 35 against a ridge formed by an annular groove 33 in the sleeve. The piece 35 is formed with recesses 37 held in register with apertures in the sleeve by the piece being split to engage a projection on the sleeve. The socket comprises a flanged cup 10 having apertures 11 to receive spring tongues 12 on a disc 13, the cup and disc with a casing 14 and an insulating shield 21 being secured on an insulating sleeve 19 on a threaded terminal 15 having a nut 20 for attaching a conductor. The socket is clamped in a hole in a panel by means of the flange on the cup and a yoke 22. The tongues 12 normally engage in 'a groove 33, the circuit being closed by depressing the plug against a spring 43 to bring a central contact of the heater into contact with the head 16 of the terminal 15. An additional plug connected to an inspection lamp &c. may be provided for alternative use in the socket. The Provisional Specification describes also a construction comprising spring tongues fixed to the inner wall of the socket and a wooden knob provided with a window.
Patent GB-731827-A (GB)
Title: Improvements in or relating to chucks
IPC: B23B31/177
Filed: 1952-05-22
Abstract: 731,827. Chucks. BRENNER, H. G. May 22, 1952 [June 7, 1951], No. 13056/52. Class 83 (3). A chuck body a has slots b for jaws s which are moved radially by an axially-movable ring c through the engagement of inclined teeth h on one or both sides of grooves v in the ring with inclined teeth g on the sides of the jaws. The ring is moved axially either by a power-operated push-pull rod connected to it by a detachable spider coupling or, when the coupling is detached, by a worm wheel d in screwed engagement with it and rotated by a worm e driven by a hand key.
Patent GB-216881-A (GB)
Title: Improvements in or relating to devices for interrupting the light of an electric lamp
IPC: H01H61/06
Filed: 1924-05-28
Abstract: 216,881. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. May 28, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermal interrupters for electric " flasher " lamps have resistances arranged in series or parallel so as to prevent the occurrence at "make" of the abnormally high current which usually occurs through the tungsten filament of the lamp having a comparatively small resistance when cold, According to one arrangement a carbon lamp which has a high resistance at low temperatures is placed in series with the interrupter and the latter may then be conveniently mounted in the cap of the carbon lamp. According to another arrangement, Fig. 2, a resistance 16, which may be mounted in the same lamp with the " flasher " filament 15, is connected in parallel with the interrupter 18 so as to keep the filament 15 hot but not glowing while the interrupter contacts are broken. When contact is made the resistance 16 is short-circuited. The interrupter used comprises, Fig. 1, a bimetallic strip 6 surrounded by a heating coil 5 which ends at a contact 9 engaging a contact 10 on' a spring 7. The strip 6 is heated and bends upwards and the strip 7 follows it till further movement is prevented by a hook 11 and the circuit is broken.
Patent GB-455991-A (GB)
Title: Process for the manufacture of a chrysene monosulphonic acid
IPC: H02K23/16
Filed: 1935-05-02
Abstract: Chrysene is treated with chlorsulphonic acid at a temperature not higher than about 10 DEG  C., in presence of a solvent or diluent to give a monosulphonic acid.  According to the examples the reaction is performed in presence of acetylene tetrachloride, and nitrobenzene respectively at 2--5 DEG  C. and the products are isolated as sodium salt.
Patent GB-1029928-A (GB)
Title: Methods and apparatus for threading wires
IPC: G11C5/12
Filed: 1965-03-29
Abstract: 1,029,928. Making magnetic cores; breaking. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 29, 1965 [April 29, 1964], No. 13159/65. Headings B3A and B3. [Also in Division H3] A partially wired magnetic core plane, containing X wires 34 and Y wires 36 is placed on a core supporting unit 10, with toroidal cores C (Fig. 7, not shown), strung at the inter-section of the wires. A movable matrix 20 is moved to the position shown to skew portions of the wires 34. Wires 22 are clamped between a unit 14 and a roller 62 and a wire feeding unit 12 is retracted to form hardened ends to the wires 22 by stretching and breaking them (Fig. 2, not shown). The wires are retracted so that all the fractured ends lie within a guide housing 70 and the unit 12 is advanced up to the core array after withdrawing the unit 14. The wires 22 are then threaded through the cores C, passing through the core plane into the receiving unit 16. The wires are then trimmed to length and bonded to contact pieces on the core plane frame 38.
Patent GB-852974-A (GB)
Title: Ethers and means for producing the same
IPC: C07D295/096
Filed: 1959-04-17
Abstract: The invention comprises compounds of the general formula : <FORM:0852974/IV(b)/1> in which n is 2, 3 or 4, R is an aliphatic hydrocarbon group containing 2 or 3 carbon atoms and R1 and R2 are alkoxy groups each having up to 3 carbon atoms and either R1 or R2, but not both, may be hydrogen ; and acid addition salts thereof ; and the preparation thereof by N-acylating a 1-o-(substituted thio)-phenylpiperazine with an appropriately substituted phenyl-alkanoic acid or reactive derivative thereof and reducing the product with a complex metal hydride, or by reacting a compound of the formula :  <FORM:0852974/IV(b)/2> with a compound of the formula :  <FORM:0852974/IV(b)/3> where X is halide, hydrogen sulphate or sulphonate ; and, if desired, converting the products into their acid-addition salts. The products have central nervous system depressant and hypotensive properties.