baber/WOPTO huggingface dataset:
Patent GB-591651-A (GB)
Title: Improvements in or relating to electric control systems
IPC: G05D3/12
Filed: 1945-05-16
Abstract: 591,651. Correspondence control systems. ERICSSON TELEPHONES, Ltd., and DISTIN, L. S. May 16, 1945, No. 12248. [Class 40 (i)] In a system in which the receiver is driven into correspondence with the transmitter by a local motor, the transmitter T and receiver R are transformers, the primaries of which are fed from a common source 5 and the secondaries of which are connected in opposition through a relay SR and which are provided with asymmetrical rotatable cores 2 and 4. No current flows through SR if the two rotors are in similar positions. If 2 is displaced with respect to 4, however, current flows in the secondary circuit and relay SR is operated to open one of contacts 15 and 16, thus unshorting one of relays 17 or 21, so that contact 22 or 18 is closed and series motor 20 runs to bring motor 4 into correspondence with 2. The angular displacement which can be signalled is limited to 45 degrees, a greater range may be transmitted by using gearing. The system may be used to control a number of members, by means of one controlled member, or to control a final member, through intermediate members.
Patent GB-178728-A (GB)
Title: Improvements in machines for threading bolts & pipes
IPC: B23G7/00
Filed: 1921-04-28
Abstract: 178,728. Clay, S. B. April 28, 1921. Screwing.-A bolt or -pipe threading machine comprises a threading-mechanism B and a sliding work carriage C operated from a pneumatic cylinder D controlled by valves E, F. In operation the valve E is moved to admit fluid to the cylinder D to bring the work up to the dies whereupon the valve is shut and the cylinder exhausted by means of a lug 6 on the carriage coacting with a stop on the rod 5. During the threading operation the carriage is drawn forward until a stop 12 coacts with a rod 8 to open the valve F to return the carriage to its starting- point, where it is stopped by the engagement of a stop 13 with the valve-operating rod 8.
Patent GB-678280-A (GB)
Title: Improvements in or relating to regulating systems for prime movers
IPC: H02J3/46
Filed: 1949-05-09
Abstract: 678,280. Automatic speed control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 9, 1949 [May 19, 1948], No. 12322/49. Class :38 (iv). In a circuit comprising two parallel connected alternators, each driven by a prime mover which is governed by a speed regulator as described in Specification 678,281, loadsharing is effected by an electronic wattmetric circuit the output of which modifies the response of one of the speed regulators. A current transformer 36a measuring the output of one alternator 12a is opposed by a current transformer 36b associated with the second alternator 12b. The resultant voltage appears across resistors 41a, 42a, and is applied to the grids of a pair of triodes. The line voltage is also injected into the grid cathode circuits by a transformer 43a so that when the current and voltage components are in phase, a voltage proportional to the difference in the power outputs of the two alternators appear across the anode load resistors. A similar circuit 50b is associated with alternator 12b, and the outputs of the two circuits are added to produce the error signal e which is added to the frequency error signal in the amplifying circuit, Fig. 4 (not shown), of the regulator associated with the alternator 12b. In a modified measuring circuit, Fig. 6 (not shown), the voltage and current components are similarly applied to the anode cathode circuits of two diodes which conduct when the components are in phase so as to produce the error voltage across resistors in the cathode circuits.
Patent GB-108224-A (GB)
Title: A Device or Apparatus for Heating or Vapourising Paraffin or other Heavy Hydrocarbons for use in Internal-combustion Engines.
Inventor: LONGFORD HERBERT GEORGE
IPC: F02M31/18
Filed: 1916-09-04
Abstract: 108,224. Longford, H. G., Longford, W. W., and clark, W. A. (trading as Sphinx Manufacturing Co.). Sept. 4, 1916. Vaporizers, external. - Liquid fuel is vaporized or heated in a coil of pipe d which projects into the combustion chamber. It is mounted in a plug b and fitted into any of the usual apertures in the cylinder head.
Patent GB-611200-A (GB)
Title: Apparatus for emptying, washing-out and re-filling the boilers of steam cranes and other steam operated appliances
IPC: F28G9/00
Filed: 1946-04-25
Abstract: 611,200. Emptying, washing-out, and refilling steam boilers. ECONOMICAL BOILER WASHING CO., Ltd., and SOUTH, E. J. H.April 25, 1946, No. 12490. [Classes 123(ii) and 123(iii)] Mobile apparatus for emptying, washing-out and refilling the boilers of steam cranes, etc., comprises a chassis 1 equipped with rail or road wheels 2 and upon which is mounted separate washing-out and refilling water tanks 5. 6, partly filled with hot water, and a power-driven pump 7, the tank 5 being provided with an inlet 15 for blown-out steam and water from the boiler which inlet has an associated steam separator 30, 31 with a valve-controlled sludge outlet 13 and a steam discharge pipe 17 leading into the tank 6. The two plates 30, 31 of the steam separator depend from the top of the tank at an angle of say 45 degrees, the lower edge of the upper plate 30 being spaced from the adjacent end wall of the tank and the 'corresponding edge of the lower plate forming with said end wall a sludge pocket at the location of the outlet 13; the upper portion 32 of the plate 31 is perforated to permit 'overflow of water into the tank 5 and both plates are fitted with baffles 33 extending from the opposed surfaces thereof. The intake of the pump 7 has valved branches 22, 23 for selectively connecting it to the tanks 5, 6 and an outlet 26 to which may be fitted a washing- out or filling hose, and said pump may be driven by an electric motor 8 or by the propelling engine of the chassis, when such an engine is fitted, the heat in the exhaust from this engine preferably being recovered in the tank 6. Both tanks are provided with filling openings 9, 10, manholes 11, 12, and overflow and drainage pipes 18, 19, and are lagged with asbestos or like insulating material. The chassis is fitted with a bracket 27 for carrying the blow-out, washing-out and re-filling hoses, when not in use, also a housing 28 for the motor-starting switch and fuses and a tool box or locker 29.
Patent GB-645094-A (GB)
Title: Improvements relating to circuit breaker arrangements adapted for rapid reclosure
IPC: H01H33/16
Filed: 1948-05-06
Abstract: 645,094. Sparking-preventing in switches. FLURSCHEIM. C. H.. and METROPOLITAN-VICKERS ELECTRICAL CO.. Ltd. May 6. 1948, No. 12504. [Class 38(v)] In order to prevent breakdown due to oscillations set up by line impedance and capacitance on reclosure of a circuitbreaker after clearing an air flash-over fault, the main contacts of the circuitbreaker are shunted by an impedance, such as a linear or non-linear resistance, which is progressively reduced in value during the reclosing operation, the resistance being finally cut-out entirely. The impedance may comprise a number of seriesconnected impedances which are either sequentially shorted-out during reclosure, or are rearranged to be in series-parallel, then in parallel, and finally shorted-out. The circuit-breaker is preferably of the series multi-break type wherein the breaks close in sequence to cut out the impedances, and preferably has an isolating gap which recloses before the main contacts to connect the impedances in circuit. The initial value of the impedances is chosen so as to approximate to the charging current of the line, the final value being greater than this value. The Provisional Specification refers also to an arrangement wherein on a transient fault the main contacts open and reclose while the isolating contacts remain closed, the impedance maintaining the continuity of supply. Specification 579,839 is referred to.
Patent GB-104302-A (GB)
Title: Improvements in and relating to Ferrules for use on Walking Sticks or Umbrellas.
Inventor: WYNNE EDWARD WILLIAM
IPC: A45B9/04
Filed: 1916-09-05
Abstract: 104,302. Wynne, E. W. Sept. 5, 1916. Ferrules or tips.-In order to distribute the wear evenly, the metal tip 4 of a ferrule for an umbrella or walking-stick 2 is revclubly secured to the socket 1 by a rivet 6, or by a flange on the socket engaging an annular groove on the tip. The tip may either be rotated by hand, or secured loosely so that, when in use, rotation takes place automatically.
Patent GB-1004271-A (GB)
Title: Flexible absorbent sheet
IPC: A61F13/15
Filed: 1963-03-29
Abstract: 1,004,271. Laminates. JOHNSON & JOHNSON. March 29, 1963 [March 29, 1962], No. 12560/63. Addition to 983,576. Heading B5N. [Also in Division A5] The laminate of the parent Specification is modified by the addition of a sheet of absorbent material 16 interposed between the fibrous layer 12 and the cellular sponge layer 11. The absorbent layer may be that of short fibres, e.g. cellulosic fibres such as cotton linters or wood pulp or may be a paper made from short fibres. The absorbent layer may be sandwiched between two layers of sponge material and in this case may be diatomaceous earth, gelatin, charcoal, attapulgus clay or kaolin. The laminate may be used as a surgical dressing.
Patent GB-1523883-A (GB)
Title: Data carrying waveform correction
IPC: H03K5/153
Filed: 1975-03-26
Abstract: 1523883 Pulse shaping and modifying MICRO CONSULTANTS Ltd 22 March 1976 [26 March 1975] 12606/75 Heading H3T In order to recover an original signal (a) Fig. 3, from a signal (b), e.g. from a tape head, in which transitions of the original signal are represented by peaks, signal (b) is applied directly to the non- inverting input of amplifier Al, Fig. 1, and through diodes D1, D2 to the inverting input. The signal at the inverting input is therefore a limited and delayed version of that at the non-inverting input with the result that the output of amplifier Al changes between positive and negative saturation at each peak in the input signal (b). Amplifier A1 may come out of saturation at points of inflexion in the signal (b) and to prevent this falsely operating an output bi-stable G6, G7 the input signal is connected to comparator CA1 having hysteresis which controls the gate circuit G2 to G5 to inhibit the signals from amplifier Al except when the input signal is outside the limits shown in (b) Fig. 3. In a modification, Fig. 5 (not shown), inverter G 1 is replaced by a comparator with hysteresis. Amplifier A 1 may comprise a dual FET differential input stage (TR8), Fig. 4 (not shown), a common emitter second stage (TR6) and an emitter follower output stage.
Patent GB-976941-A (GB)
Title: Improvements in or relating to catalytic isomerization processes
IPC: B01J27/13
Filed: 1962-04-03
Abstract: Hydrocarbons are isomerized at 200-400 DEG  F. by contact with hydrogen in the presence of a catalyst comprising Pt and Al2O3 activated by contacting a composite of Pt and Al2O3 with an organic acid chloride having an atomic ratio of Cl: C of at least 2: 1 at an activation temperature of 300-650 DEG  F.  Suitable conditions include a space velocity of 0.5-2 vol/vol/hour and a hydrogen to hydrocarbon mol. ratio of 0.2-5: 1 using liquid or vapour phase at 300-500 p.s.i.g. Comparative examples refer to the isomerization of a hexane feedstock to yield 2-methyl pentane, 3-methyl pentane, 2: 2 dimethylbutane, 2: 3 dimethylbutane cyclic hydrocarbons and pentanes.ALSO:An isomerization catalyst comprises Al2O3 preferably eta alumina, 0,01-1,0% of Pt and 1,0-10% of chlorine, in which at least part of the chlorine is introduced at 300-650  DEG F. into the catalyst by use of an organic acid chloride having an atomic ratio of chlorine to carbon of at least 2 : 1. The catalyst may be used as a granular or pelleted solid in fixed or moving beds.  Deposition of Pt on Al2O3 may be achieved by use of H2PtCl6 or precipitation of platinum sulphide from an alumina impregnated with a soluble Pt salt. A specified chlorinator is CCl3COCl.  Examples are given.
Patent GB-1388171-A (GB)
Title: Support arrangement for shelves
IPC: A47B57/42
Filed: 1972-03-17
Abstract: 1388171 Shelving E SPIIK 17 March 1972 [17 March 1971] 12716/72 Heading A4B A shelf 5 is supported by a pair of brackets 4 with ends selectively engaged in slots 3 formed in a rotatable post 1, each bracket 4 having oppositely directed inner and outer flaps or tongues 6 which engage in corresponding recesses 7 formed in, or in parts attached to, the underside of the shelf, each bracket being fitted by first engaging the slots 3 in the post 1, then engaging the inner flap 6 in its associated recess 7, and finally resiliently flexing the bracket 4 to engage the outer flap 6 on its corresponding recess 7. The brackets 4 are interconnected by a rail 9 with ends 8 pivotally and displaceably engaged in respective apertures in the bracket ends.
Patent GB-1515260-A (GB)
Title: Reverse conduction thyristor
IPC: H01L29/861
Filed: 1977-03-25
Abstract: 1515260 Thyristors ALSTHOM-ATLANTIQUE SA 25 March 1977 [8 April 1976] 12726/77 Heading H1K A reverse conduction thyristor structure comprises a thyristor zone 2, 4 and a diode zone 6 connected in anti-parallel, and is characterized by a blocking layer of one conductivity type having a conductive sub-layer 14, 140 in contact with a thyristor injection layer 10 and with a diode contact layer 12, and a resistive sub-layer 16, 160 in contact with a thyristor control layer 18 and with a diode injection layer 180. The conductive sub-layer, which is thicker in the diode zone 8 than in the thyristor zone, has the thickness in the latter zone less than one-third the thickness of the resistive sub-layer, and has the impurity concentration at least equal to ten times that of the resistive sub-layer. A trigger thyristor with its emitter 20 initiates the firing of the main thyristor (zone 4). When cathode 34 is negatively biased with respect to anode 30, and when the bias voltage is reversed, the thyristor stops conducting, and the diode becomes conductive. A process of manufacturing the structure includes known diffusion and masking methods. In addition to the diffusion of conductivity-type determining impurities, gold is diffused to provide trapping sites.
Patent GB-1432747-A (GB)
Title: Earthworking vehicles
IPC: E02F3/38
Filed: 1974-03-22
Abstract: 1432747 Bucket excavators; dozers INTERNATIONAL HARVESTER CO 22 March 1974 [29 March 1973] 12844/74 Heading E1F An earth working assembly comprises a vehicle 1, a vertically swingable boom 2 pivoted at one end on the vehicle and having at the other end means for permitting of the adjustable and removable mounting of an implement, e.g. a scoop or grader blade 12, thereon, a rocker arm 4 mounted on the boom for controlling the adjustment of the implement relative to the boom when it is mounted on the boom, and a backhoe 18 mountable on the rocker arm. Preferably the rocker arm is provided with locking pins 13, 14 and the backhoe includes a swing mechanism 17 provided with locking recesses 15, 16, which cooperate with the pins 13, 14 to mount the backhoe on the rocker arm. At least one of the locking recesses is associated with an arresting shackle 22 to retain a locking pin in the recess. The implement is provided with one or more support plates 12 which can be positioned to face downwardly to engage the ground and give additional stability to the vehicle when required.
Patent GB-687292-A (GB)
Title: Improvements in or relating to the production of hollow articles from organic thermoplastic sheet material
Inventor: GATES WILLIAM ELLIOTT FREW
IPC: B29C69/00
Filed: 1950-05-23
Abstract: A sheet (or sheets) of organic thermoplastic material which can be heated by high frequency electric current is preheated and placed between the two halves of a hollow mould, the two halves being separated by two thicknesses of the material.  The sheet is then blown to the shape of the mould by fluid pressure introduced between the two thicknesses.  A high frequency electric current is applied to the mould whilst a follow-up pressure is maintained on the two halves of the mould, and the hollow article is removed from the mould and its outer flash is trimmed off.  The hollow article may be a bottle or a doll's head.  The H.F. heating, which may be applied after the sheet has been blown, softens the material and the follow-up pressure seals the edges of the moulding.  Two sheets may be used, or one sheet folded over on itself.  The preheating of the sheet may be by infra-red heaters, e.g., to 120 DEG C. for polyvinyl chloride.  Other materials which may be used are vinyl resins in general, polyamides, polyethylene terephthalate, chlorinated polyethylenes and cellulose acetate. The mould may be cold.
Patent GB-377977-A (GB)
Title: Improved light valves for use in sound recording and picture transmission or like systems
IPC: G11B7/00
Filed: 1931-05-01
Abstract: 377,977. Light valves for sound recording, picture transmission &c. ELECTRICAL RESEARCH PRODUCTS Inc., 195, Broadway, New York, U.S.A.- (Assignees of Gent, E. W. ; 251, Speedwell. Avenue, Morristown, New Jersey, U.S.A.) May 1, 1931, No. 12878. Convention date, May 14, 1930. [Class 40 (ii).] In alight valve, for use in soundrecording or picture transmission and like apparatus, comprising a vibratory filament or pair of filaments, a substantially triangular light passage adjacent to an aperture is formed by crossing the filament or filaments. The apparatus shown, which is adapted to produce on a photographic film a track which varies both in density and area, comprises a ribbon 30 to which sound-modulated current is supplied, the ribbon being connected at its ends to terminals 20, 21 and looped round an adjustably mounted tension pulley 28, the two strands of the ribbon crossing each other at a position over a lighttransmitting slot 25. The two portions of the ribbon touch each other where they are in contact with a bridge 22, but are electrically separated where they pass over a bridge 23 by an insulating pin 24. The bridge 23 is stepped, so that the two strands are at slightly different levels, and cannot clash as they vibrate. A portion of the slot 25 is covered by the strands of the ribbon, leaving a triangular space uncovered, which varies in area and position relatively to the slot 25 as the ribbon vibrates in a magnetic field, under the influence of the varying current. The magnetic system, as shown in Fig. 2, comprises a field winding 6 in a casing 1, a polepiece 7 screwed to the casing, and a polepiece 10 screwed to a cover 2. The vibratory ribbon is mounted in the air gap between the polepieces, the size of the gap being determined by spacing studs 13, 14. Light is transmitted through an opening 17 and passes through aligned slots in the polepieces.
Patent GB-960148-A (GB)
Title: Pyrophoric gas lighter with pressure lever
IPC: F23Q2/52
Filed: 1963-04-02
Abstract: 960,148. Pyrophoric lighters. WIEDEN & CO. G.m.b.H. April 2, 1963 [May 11, 1962], No. 12960/63. Heading F4F. In a pyrophoric lighter comprising a flexible plastic casing formed by a top 2 welded or connected by an adhesive to a base 1, an operating lever 14 is formed in one piece with the base 1, and a U-shaped holder 13 for a horizontal flint tube 9 is formed in one piece with the top 2. The top 2 and the base 1 form a liquefied gas reservoir 3. The bottom of the operating lever 14 is connected by a small neck to the bottom of the base 1. An elastic arm 15 is connected by a screw 16 to the top of the operating lever 14 and abuts a latch arm 17, secured at one end to the top 2 and adapted to lift a gas escape valve 5. The legs of the U- shaped holder 13 extend outwardly to facilitate insertion of the flint tube 9, and the latter has square ends which enclose the holder 13. The flint is pressed against the spark wheel 7 by a spring 11 adjusted by a screw 12. A cap is fitted over the top 2 flush with the sides of the base 1, and has a flame aperture and a spark wheel aperture.
Patent GB-632236-A (GB)
Title: Apparatus for compressing and packing textile slivers into containers
IPC: B65H54/84
Filed: 1947-05-15
Abstract: 632,236. Packing textile slivers in cans. SCARANI, R. May 15, 1947, No. 13111. [Class 120 (iii)] In apparatus for compressing textile slivers into containers, of the kind in which a rammer is vertically reciprocated into engagement with the slivers as they are layered into the container, the connection between the reciprocating mechanism and the rammer comprises a lever carried by the said mechanism and apertured near one end to embrace the shaft of the rammer, said lever occupying an inclined position such that the shaft is gripped between opposed edges of the lever aperture during a lifting movement of said mechanism but the shaft is capable of free upward sliding movement through said aperture. As shown, a rammer 1 having a shaft 2 slides in the bearings 4 of a casing 3 which is supported on rods 9 through which, by means of crank wheels and connecting rods, a vertical reciprocating motion is imparted to the casing 3. A lever 5, having an aperture 6 at one end through which the shaft 2 passes is supported between two protruding lugs 51 such that when the casing 3 is rising the shaft 2 is gripped in the aperture 6 but when it is falling and the rammer contacts the sliver the aperture can readily slide over the shaft 2 for the remainder of the downward travel. A strike pin 7 is provided for manually raising the lever 5 and disengaging the shaft 2.
Patent GB-400306-A (GB)
Title: Improvements in means for converting reciprocating motion into rotary motion or viceversa in engines and compressors
IPC: F16H25/12
Filed: 1932-05-07
Abstract: 400,306. Actuating compressors. HARPHAM, W., 3, Clarence Road, West Bars, and REDFERN, A. L., 177, Broomhill Road, Old Whittington, both in Chesterfield. May 7, 1932, No. 13186. [Class 8 (i).] In steam, internal-combustion, compressedair, hydraulic engines and compressors wherein the reciprocating motion of a piston is transmitted into rotary motion by a cam slot D engaging a stationary peg, roller, or stop E, the rotary motion is conveyed to a shaft B by toothed or friction gearing. A toothed or friction rim F parallel with the cam slot rotates the shaft B through a gear wheel G.
Patent GB-399435-A (GB)
Title: Improvements in or relating to radiators for heating buildings
IPC: F28F3/04
Filed: 1933-05-06
Abstract: 399,435. Radiators for heating buildings. HELLEN, J. L., Kl÷fta, Norway. May 6, 1933, Nos. 13256 and 13257. Convention dates, May 7, 1932, and April 19, 1933. [Class 64 (ii).] In a radiator for heating buildings comprising back and front plates 1, 3 connected along their edges, the back plate is provided with undulating hollow ribs 2 communicating with each other through narrow channels. The front plate may be plain or provided with horizontal and vertical depressions 5 forming channels communicating with the hollow ribs. Shorter ribs 2a, 2b are disposed between the inlet and outlet sockets 6, 7. The radiator may be strengthened with transverse iron bars welded to the tops of the ribs.