baber/WOPTO huggingface dataset:
Patent GB-712215-A (GB)
Title: Improvements in or relating to electronic selecting arrangements
IPC: H04Q3/52
Filed: 1949-01-18
Abstract: 712,215. Automatic exchange systems. ERICSSON TELEPHONES, Ltd., and ACTON, J. R. Jan. 13, 1950 [Jan. 18, 1949], No. 8056/52. Divided out of 712,171 [Group XL (a)]. Class 40 (4). [Also in Group XL(a)] A selecting arrangement capable of selecting any one of eleven lines comprises a cold cathode gas-filled discharge tube ST (see Group XL (a)) having an anode A, twelve signal/transit electrodes (Z and Y1 to Y11 connected separately to relays RY1 to RY11 shunted by capacitors C1 to C11 to counteract the inductance of the relays) and first and second guide electrodes each with twelve sections (W1 to W12 and XI to X12 respectively). Anode A is connected to a 460 v. supply B + so that the glow normally rests on signal/transit cathode Z which is connected to earth at E, and may be regarded as a "home" electrode. When lines LA and LB are looped by a station connected thereto, relay L operates and l1 closes a 'circuit for slow-operate relay B while l2 opens the pulse lead connected to a -120 v. supply at A-. Relay B operates and at b1 connects signal/ transit cathodes Y1 to Y11 to earth, while b2 extends the pulse lead and b3 extends a 60 V. supply A+ to the first and second guide sections. Relay B is also slow to release, and holds during the subsequent impulsing. When the calling station dials, relay L impulses and at l2 connects the negative potential from A- to a network consisting of capacitor C12 and resistors R1, R2 and R3. Pulses of negative potential are thus applied to the first guide sections by way of R1 and to the second guide sections by way of R2 and the glow steps along the cathodes until it rests on the signal/transit cathode Y1 to Y11 corresponding to the dialled number. Relays RY1 to RY11 have an operate lag so that a relay will not operate within the inter-pulse, period when the glow invests a signal/transit cathode transiently, but will operate when the cathode Y1 to Yll is the selected electrode and the glow halts thereon. The contacts of relays RY1 to RY11 (not shown) may be used to connect the calling line to the called station or to control electrical or electro-mechanieal devices of known type, or to extend a signal to means adapted to register the number of the called station and in association with known arrangements connect the calling and called lines.
Patent GB-773502-A (GB)
Title: Improvements in and relating to the alkylation of aromatic compounds
Inventor: COATS ROBERT REID
IPC: C07C2/70
Filed: 1954-03-19
Abstract: Alkylated aromatic hydrocarbons are obtained by reacting an aromatic hydrocarbon or hydrocarbons in a first stage in the liquid phase at 5-100 DEG  C. with an olefine or an alkyl halide in the presence of a liquid catalyst complex comprising a strongly active Friedel-Crafts catalyst, a hydrogen halide and an alkylated aromatic hydrocarbon, the catalyst being immiscible with the starting hydrocarbon and the products, to produce a mixture containing at least mono- and di-alkylated hydrocarbons, separating this mixture from the liquid catalyst complex and subjecting the mixture in a second stage in the liquid phase to a temperature of 5-100 DEG  C. in the presence of a further quantity of a similar catalyst complex whereby isomerization and interalkylation occur, separating the mixed product from the catalyst complex, and recovering the alkylated hydrocarbons from the mixed product by a fractional separation.  The catalyst complex which may be prepared from aluminium chloride or boron fluoride is preferably separated at the initial stage by decantation and at the second stage by distillation, extraction or adsorption.  The olefines preferably have 2-8 carbon atoms, and the aromatic hydrocarbons used as starting materials may have up to 8 carbon atoms in alkyl side chains.  Benzene, toluene and cumene are the preferred starting materials.  Pressures up to 20 atmospheres may be utilized.  In a typical example (No. 1) benzene, propylene and hydrogen chloride are fed into a reactor containing a catalyst, consisting of a liquid complex formed from aluminium chloride, benzene, propylene and hydrogen chloride and comprising isopropyl benzenes, at 50 DEG  C. The product was then fed to a second reactor at 96 DEG  C. and treated with a similar catalyst to produce a mixture containing 60 per cent of di-isopropyl benzenes.  Specification 732,170 is referred to.
Patent GB-714423-A (GB)
Title: A process for the production of patterns on plane-surfaced textiles, paper, leather and the like
Inventor: BABINSKI ADAM
IPC: D06Q1/08
Filed: 1951-04-07
Abstract: Fixatives for applying to selected areas of textiles in the production of relief patterns (see Group VIII) comprise: (a) melamine formaldehyde condensate, a 5 per cent. cellulose methyl ether solution, and ammonium thiocyanate, together with a 10 per cent. casein solution and/or tricresyl phosphate and/or water; scarlet pigment or aluminium bronze powder may be added; (b) polystyrene emulsion and a 5 per cent. cellulose methyl ether solution.  In a modification a fixative of melamine formaldehyde condensate, ammonium thiocyanate, 10 per cent. casein solution, a sulphonated oil of high molecular weight, and water is applied to the whole textile surface, and subsequently neutralized in selected areas by an aqueous solution of soda and starch.
Patent GB-348768-A (GB)
Title: Improvements in or relating to telephone and like systems with amplifiers
IPC: H04B3/00
Filed: 1930-03-13
Abstract: 348,768. Multi-way repeating systems. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and CRIBB, E. H., of General Electric Co., Stoke, Coventry. March 13, 1930, No. 8147. [Class 40 (iv).] Two-way amplifiers 10, 20, belonging to each line have the same impedance (looking towards the individual lines) to which the impedance of the whole system viewed from any one of them is made equal by commoning one of each pair of output terminals (from the individual line point of view) and connecting the others to resistances 12, in star formation or where there are only 3 lines to resistances 21 in delta.
Patent GB-1107955-A (GB)
Title: Improvements in or relating to devices for punching materials by means of compression waves
IPC: B21D26/12
Filed: 1966-02-24
Abstract: 1,107,955. Perforating by burning. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 24 Feb., 1966 [27 Feb., 1965], No. 8171/66. Heading B4B. [Also in Divisions B3 and H1] A device for punching material by means of a spark discharged in a space one of the boundary walls of which is formed by the material to be punched is characterized in that another of the boundary walls of the space consists of a liquid surface. The device shown, which is for punching holes in a paper tape or sheet 8, has three spark gaps and comprises main electrodes 1 and ignition electrodes 2 arranged in the bottom of an insulating container 3 filled with liquid 5. The surface of the liquid, apart from the space between the electrodes, is covered by an insulating plate 6. The electrodes 1 are surrounded by insulating tubes 9. The punch matrix 11 is forced against the sheet 8 by springs 13 so that the spark discharge forms in a gasfilled space 12. In a modification, the spark discharge space consists of a rotatable disc (23), Figs. 3 and 4 (both not shown), coated with liquid in a container (25). The spark discharge occurs between the two main electrodes (21) which are arranged on both sides of the disc (23). An ignition electrode (22) may be provided. A plate (27) supports the material (28) to be punched which is forced against the plate by springs (29) acting on a punch matrix (30). Two electric circuits for operating sliding spark discharges are described.
Patent GB-700707-A (GB)
Title: An improved girder lifter for use in mines
IPC: E21D11/40
Filed: 1951-04-07
Abstract: 700,707. Load handling machines; rope grips ; catch gear. CLARKE, CHAPMAN & CO., Ltd., and MATHER, J. J. V. March 4, 1952 [April 7, 1951], No. 8342/51. Classes 78 (2) and 78 (3). A hoist for raising roof supporting girders 23 in mines comprises a pair of telescoping tubes 3, 5, a platform P which is guided on the tubes by a pair of eye plates 10, and a cable 14 which is anchored to the platform at 13 and passes over pulleys 15, 16 to a winch (not shown). A ring 12 which is slidable on tube 5, rests on top of tube 3 when the platform is lowered, but, when the platform is raised to the level of the tube 5, it seats on an annular recess 10a in the upper plate 10 and reduces the effective diameter of the hole therein. Rotary movement of the platform is prevented by a rib 6 on the tube 5, and a pair of ribs 4 on the tube 3. 'The base of the hoist has a pair of T-bars 2 for attachment to the packing machine described in Specification 691,872, [Group XXI], which may also carry the winch mechanism. Rope grips. As shown in Fig. 2, the cable 14 is equipped with a manually-operable rope grip G to sustain the platform at a predetermined height ; this grip consists of a casing 18 having a box 19 slidable therein in such a manner that when it is lowered it jams the rope against the bottom 18a of the casing. A cam 21 which is pivoted about an axis 20.engages the bottom of the box and has spigots 22 engaging segmental slots 19a in the sides of the box ; thus, when this cam is rotated by movement of lever 70 it causes the box to grip or release the cable. Catch year. In the event of the cable breaking the pair of eye plates 10 tilt and bite into the tubes so preventing the loaded platform from dropping.
Patent GB-1196882-A (GB)
Title: Transmission Shifting Mechanism Including Locking Means for Preventing Over-Shifting.
IPC: F16H61/24
Filed: 1969-02-17
Abstract: 1,196,882. Change-speed control. DR.-ING. h.c.F. PORSCHE K.G. 17 Feb., 1969 [28 March, 1968], No. 8385/69. Heading F2D. In a motor-vehicle change-speed gear shift mechanism in which a manual shift lever (not shown) is moved in a three channel H-type gate (not shown) to slide and turn a rod 2 for gear selection and establishment respectively, for five forward speeds and reverse, the slide-andturn rod 2 carries a spring-centralized sleeved stop lug 9, 10, slidably keyed at 16 thereon, which selectively engages a stepped locking segment 11 fast on the transmission housing 7 to limit gear selection, i.e. axial movement of the rod 2, to single stages between the three channels (R/I; II/III ; IV/V) of the gate, i.e. one channel to the next, whereby over-shifting through the channels is prevented. The sleeved stop lug 9, 10 engages one or other steps 14, 15 of the locking segment 11 and is centralized on the rod 2 between opposing springs 17, 17<SP>1</SP> seated at their outer ends on a plate 18 and selector arm 3 such that axial movement of the rod 2 overcomes the bias of one or other spring 17 to engage. the spring seat 18 or arm 3 with the stationed stop lug sleeve 9 whereby the shift rod 2 is singly moved between channels for gear selection, rotation of the rod 2 for gear establishment in the selected channel releasing the spring loaded stop lug 10 from the locking segment 11 whereby the stop lug 10 is centrally re-established on the rod 2, i.e. moves to the next lock stop for similar operation for the next channel shift.
Patent GB-1168554-A (GB)
Title: Semiconductor Device
IPC: H01L23/48
Filed: 1967-02-22
Abstract: 1,168,554. Semi-conductor devices &c. ALLMANNA SVENSKA ELEKTRISKA A.B. 22 Feb., 1967 [23 Feb., 1966], No. 8432/67. Heading H1K. A semi-conductor device comprises a unit consisting of a semi-conductor body with or without associated electrode assemblies, mounted between terminal bodies at least one of which is in pressure contact with the unit. At least one of these bodies is connected to or forms part of a cooling body comprising a stack of spaced apart resilient plates. The plates extend laterally beyond the unit and clamping means for providing the pressure contact are disposed on the laterally extending parts. In a typical example the device is a silicon controlled rectifier consisting of a PNP disc soldered between molybdenum plates with aluminium and goldantimony alloy respectively. The disc is mounted between dished plates silver soldered at their periphery to ceramic rings, which are likewise soldered, to metal rings which are subsequently joined by cold welding or solder to form a sealed housing, from which the control electrode extends between the rings. The housing 13 (Fig. 1) is held between bosses formed on members 14, 15, which are bolted and riveted to resilient cooling plates held apart by spacers 24, the outermost plates being bent over to channel cooling air between the other plates. Members 14, 15 may be formed integral with the innermost cooling plates. The assembly is clamped together by a pair of bolts extending through each set of cooling plates and engaging nuts built into insulating bodies disposed between the sets of plates. In an alternative form in which the lower set of plates is omitted member 14 is extended laterally to accommodate the clamping bolts. In a simplified arrangement in which the housing contains a diode (Fig. 5, not shown) the bosses form the terminal parts of centrally disposed rivets holding the cooling plates together. In this case the plates in each set extend alternately mainly to left and right of the rivets with the overlapping sections acting to space the plates apart. Suitable materials for the spacers, plates and boss members are copper, aluminium and silumin. It is stated that the sealed devices may alternatively comprise germanium or silicon bodies with deposited electrodes of gold, silver, copper, aluminium, nickel, chromium, molybdenum, lead or alloys thereof, or disposed between electrode plates of fernico, tungsten or molybdenum.
Patent GB-1392801-A (GB)
Title: Electrowinning of chromium metal
IPC: C25C1/10
Filed: 1971-04-02
Abstract: 1392801 Production of chromium & tanning composition ALBRIGHT & WILSON Ltd 23 March 1972 [2 April 1971] 8522/71 Headings C7B and C6C A method of producing chromium metal and a tanning composition comprises acidifying an aqueous solution of alkali metal chromate to form the dichromate, reducing the dichromate to an aqueous tanning solution of a chromic salt and an alkali metal salt, feeding part of the tanning solution diluted to 40-180 gm/lite chromium to a diaphragm cell, producing in the cell chromium metal, an acidic anolyte and a chromium lean catholyte, recycling the catholyte and combining it with the tanning solution, recycling the anolyte and adding it to the alkali metal chromate to effect part of the acidification thereof, and recovering the chromium metal and part of the tanning solution as products. The chromate maybe acidified with sulphuric acid and the tanning solution may be chromium sulphate. The dichromate may be reduced with sulphur dioxide and the alkali metal may be sodium. The pH of the cell is 1-2.8, the temperature 27-80 C and the current density 30-300 amp/ft<SP>2</SP>.
Patent GB-1268282-A (GB)
Title: Bell-crank lever
Inventor: PROVI MIKE ANTHONY
IPC: G01G21/23
Filed: 1969-06-09
Abstract: 1,268,282. Bell-crank levers. BREARLEY CO. 9 June, 1969, No. 8539/71. Divided out of 1,268,281. Heading F2K. [Also in Division G1] A bell crank lever forming part of a weighing device described and claimed in Specification 1,268,281 comprises, as shown in exploded view in Fig. 6, a sheet metal bracket 69 connected by way of a hook 84 and a lug 86 to a generally T-shaped sheet metal member 70 having a notch 85 for receiving the hook 84 and a hole 89 for receiving the lug 86, the T-shaped member 70 defining trunnions 64 for support on a further bracket. In use, the bell crank lever is rockably supported by the trunnions 64 on the further bracket and receives a downwardly directed load on a platform by way of a member pivoted in a notch 78 of the bracket 69, the bell crank lever consequently tilting on the trunnions so that the foot 71 of the T-shaped member 70 causes a bar 22 to move horizontally, the bar 22 being linked to a weight indicator. The bracket 69 and member 70 have complementary shaped abutting portions and are maintained in connection by crimping over the ends of the hook 84 and lug 86 once these members have been correctly located in the notch 85 and hole 89 respectively.
Patent GB-876597-A (GB)
Title: Calcination of alumina
IPC: C01F7/445
Filed: 1958-03-18
Abstract: <PICT:0876597/III/1> In the fluidised calcination of alumina hydrate, the finely divided solid is fed successively into at least one preheating bed (19, 23) a calcining bed (26 maintained at about 1800 DEG F.) and a cooling bed (29) whilst fluidising gas passes in counter-flow, and entrained fines are separated from the final effluent gas (e.g. in a cyclone 61) and returned in part to the cooling bed (via conduit 64) and the remainder to the calcining bed (via conduit 66), the amount of fines returned to the cooling bed being such that the temperature is not depressed below 800 DEG F. The numerals relate to the Figure in which the operation is generally similar to that described in Specification 781,994 and in which the amount of fines returned to beds 26 and 29 is automatically controlled respectively by means of controllers 69 and 68, motors 80 and 79, and slide valves 67 and 65.  The aperture of valve 65 is thus increased in accordance with the extent to which a thermocouple 78 indicates a temperature above 800 DEG F. in bed 20 and with the pressure differential between pressure taps 76 and 77; should the latter fall to below that which is sufficient to provide a gas seal between the fluidised bed 29 and the cyclone 61, the valve is shut off.  Valve 67 is similarly dependent upon the pressure differential between pressure taps 75 and 76.
Patent GB-485129-A (GB)
Title: Improvements in or relating to sealing bottles and like containers of paper, wood-pulp and like sheet material
IPC: B65D5/06
Filed: 1937-03-24
Abstract: 485,129. Paper &c. bottles &c. WARE & CO., Ltd., H. M., and WARE, H. M. March 24, 1937, No. 8634. [Classes 66 and 94 (ii)] A paper &c. bottle &c. provided on at least one side of its mouth with an integral tab &c. d which extends beyond the mouth portion and is adapted to be bent downwardly over the lips of the bottle &c. when they have been brought together, is characterized in that the outer surface of the tab &c. has provided thereon, e.g. by prongs, tangs &c. ready for use in sealing, a metal strip e which, or a portion of which, may be turned downwardly with the tab &c. and held in position by indenting, crimping &c. or by heat or pressure. The metal strip e may extend laterally beyond the container to provide ears which may be bent around the ends of the sealed mouth. When the metal strip e extends downwardly below the mouth proper, the lower portion may be left free to form a downwardly extended skirt. In a further modification, Fig. 5, a projecting tab or tabs &c. d with sealing strips e attached, may be provided on each lip of the mouth portion portion and arranged in staggered fashion.
Patent GB-613540-A (GB)
Title: Improvements in or relating to vibratory synchronously operating electric convertingdevices
IPC: H02M7/40
Filed: 1946-03-20
Abstract: 613,540. Converting. KESSELRING, F. March 20, 1946, Nos. 8649, 8650 and 8651. Convention dates, March 27, 1945, May 11, 1945, and May 18, 1945. [Class 38 (ii)] In converting apparatus for rectifying, inverting or frequency conversion, and comprising contacts operated electromagnetically in dependence on the current in a valve circuit bridging the contacts, the valve current passes through a main contact-actuating means in series with the contacts, so that. the voltage drop in the valve circuit when the contacts are opening is less than the minimum voltage required to cause arcing. In Fig. 1, the A.C. source 1 supplies rectified current through the load 7, the battery 8, and the rectifier contacts 3 synchronously operated by the series coil 5. The contacts 3 are shunted by the valve 6. When, on a half-cycle of the supply and with contacts 3 initially open, the supply voltage exceeds the voltage of battery 8 sufficiently to pass operating current through coil 5, the contacts 3 will close. When the voltage has decreased again to the value of the battery voltage, the contacts re-open. The valve 6 tends to eliminate sparking at the contacts. One coil 5 may operate three valve-shunted switches in a three-phase arrangement and there may be a choke coil in series with each switch. In a modification, the switch has two breaks in series, each break being shunted by three parallel paths made up respectively of resistance, capacity and rectifying valves in series. In Fig. 4, the contacts 3 are shunted by the valve 6 and battery 20 in series; the contacts are closed by coil 5 when the supply voltage exceeds the battery voltage and are closed by spring 19 when the supply voltage decreases again. The series choke coil 14 may be on a core pre-magnetized by coil 16 (in series with choke coil 17) and. having a secondary winding 15 supplying a coil 18 assisting the opening of the switch. The contacts may also be shunted by resistance-capacity combination 21.
Patent GB-1161377-A (GB)
Title: Relay Strips with Reed Contacts, Preferably for Through-Connecting Networks arranged in Co-ordinates
IPC: H01H67/24
Filed: 1968-02-22
Abstract: 1,161,377. Reed armature relays. INTERNATIONAL STANDARD ELECTRIC CORP. 22 Feb., 1968 [1 March, 1967], No. 8750/68. Heading H1N. A strip of relays on a common thermoplastic body 1 has the coil 3 of each relay carried on guiding ribs 2 of the body 1 and the ribs 2 divide the space inside the coil into chambers 4 in which reed contact units 5 are mounted. Flux return path and screening sheets 11 are provided with holes 12, 13 which fit over studs 14, 15 on the body 1 which has funnel-shaped slots for the insertion of contact terminal lugs 20 and chambers 10 for diodes 9 and wire bridges. Connections are made on a printed circuit-board 7, and the coils are retained by plastics wafers pressed into strops of the body 1.
Patent GB-829707-A (GB)
Title: Improvements in or relating to overspeed protective arrangements for electric motors
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: B66B5/10
Filed: 1957-03-18
Abstract: 829,707. Control of motors; controllers. GENERAL ELECTRIC CO. Ltd. March 11, 1958 [March 18, 1957], No. 8826/57. Class 38 (3). An overspeed protective arrangement for an electric winder motor comprises a highfrequency tachometer generator 1 which is driven by the motor, and has an output frequency at the lowest operative speed which is sufficient to prevent vibration of a relay 2. This relay is biased to the open position by spring 6, and has an opening coil 7 and a closing coil 8. A constant-current circuit comprises the coil 8 and two halves of the coil 7, whereby a fault in this circuit will cause the constant current in the coil 7 to be unbalanced, so opening contact 15 and stopping the winder motor. The ratio between the voltage applied to coil 7 and the terminal voltage of the generator 1 is varied by a divided potentiometer 13 which is camadjusted in accordance with the position of the winder cage, whereby the maximum permissible speed is reduced as the cage approaches a stopping-position. In addition, the maximum permissible speed is varied as a function of the load, contact brushes 19, 20, on the potentiometer being moved by motors 21, 22, which are controlled by a load-measuring arrangement. The relay 2 is opened to stop the motor if the load-measuring means disagree by more than a predetermined amount. A voltmeter, 23, indicates whether the tripping-limit is being approached. The potentiometer 13 may be replaced by a transformer. Specifications 782,378 and 800,407 are referred to.