baber/WOPTO huggingface dataset:
Patent GB-395070-A (GB)
Title: Improvements in electric starting mechanism for internal combustion engines
Filed: 1932-02-18
Abstract: 395,070. Starting prime movers. ECLIPSE MACHINE CO., Elmira, New York, U.S.A. Feb. 18, 1932, No. 4864. Convention date, Feb. 24, 1931. [Class 38 (iv).] The circuit of a motor SM for starting an internal-combustion engine is opened, in case of overload, by means of a bimetallic' strip 30 mounted in the control circuit of the starting switch 16. The control circuit includes a solenoid 27 and a pair of contacts 36, 37, the latter or which is carried by a spring strip 38. On closure of a switch 28, which may also close the ignition circuit, the solenoid 27 attracts its plunger 24 and closes the starting circuit. A single turn winding 17 in the latter circuit maintains a plunger 48 in its upper position during the starting operation. The lower end of the plunger is surrounded by a voltage coil 50 and a generator coil 51 which, when energized, attract the plunger downward. When the engine starts up the effect of the coil 17 is weakened by the reduction in the starting current, and that of the coil 50 is strengthened, until the plunger 48 is drawn downwards, thereby causing a roller 42 carried by a lever 40 pivoted at 41 to engage a wedge-shaped weighted member 43 on the spring 38 and separate the contacts 36, 37. The solenoid 27 is thereby de-energized and a spring 26 opens the starting switch 16 ; the voltage coil 50, however, is still energized by the current generated by the starting motor spinning in its residual field and retains the plunger 48 in its lower position until the generator G, driven by the engine, has picked up sufficiently to energize the winding 51. The starting motor circuit includes a conductor 19 in parallel with which is a heating coil 57 surrounding the bimetallic strip 30. II the engine fails to start within a predetermined time, the bending of the strip opens the circuit of the solenoid 27 at contacts 31, 32, and releases the plunger 24 to open the starting switch 16. A latch 60 controlled by a solenoid 64 prevents the return of the bimetallic strip until the latch is released by the opening of the switch 28.
Patent GB-1080265-A (GB)
Title: Improvements in or relating to electric arc furnaces
Inventor: MCGEE LAWRENCE
IPC: F27D11/08
Filed: 1965-02-04
Abstract: 1,080,265. Electric arc furnaces. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Dec. 23, 1965 [Feb. 4, 1965], No. 4869/65. Heading H5H. A top charged electric arc melting furnace in which the minimum lengths of the electrode leads are determined only by the vertical movement of the electrodes comprises a furnace vessel 11 and a transformer housing 14, movable in a horizontal plane with respect to the vessel, supporting electrodes 12 and the furnace roof 17. The electrodes, held by clamps, are moved by hoists 15 and connected to the transformer by symmetrical closely coupled flexible leads 13. Supply leads to the transformer are also flexible and located in a protective duct 18. During charging the roof is moved over a thermal shield 19 by lifting gear 16 attached to the housing. The vessel may be tilted forwards or backwards for tapping, pouring or slagging. To permit this movement either the electrodes swivel on their clamps, the housing tilts with the furnace or the electrode parts are sufficiently large. The transformer roof and electrode clamps are water cooled. The vessel may be elliptic or oval with multi-phase multiple electrodes as described in Specification 974,444. Supplementary reactors may be connected in series with the furnace transformer when using a tap change auto-transformer.
Patent GB-924298-A (GB)
Title: A method of removing oxygen dissolved in water by means of anion exchange resins
IPC: B01J41/04
Filed: 1960-02-11
Abstract: An anion exchange resin containing both weakly and strong basic functional groups has the strong-base groups charged with dithionite by treatment with either a solution of a dithionite or the reaction product of a dithionite and an aldehyde, e.g. sodium formaldehyde sulphoxylate.  Exemplified resins are condensation products of aldehydes and polyalkylene polyamines, aminotriazine, guanido aminotriazines, amines of biguanide, urea or melamine, condensation products of polyepoxy compounds and polyamines, furfural/guanido-carbonyl, glycerol dichlorhydrin/alkylene polyamines, bifunctional triazines/polyalkylene polyamines, phenol/formaldehyde and tetraethylene pentamine epichlorhydrin condensation products. Also aminated chloromethylated polystyrene p and vinyl polymers and copolymers.  Specifications 654,706, 740,840, 799,620, 806,583, 867,769, 885,719, French Specification 855,849, German Specification 848,257 and U.S.A. Specification 2,591,573 are referred to.ALSO:Dissolved oxygen from electrolyte-free water is removed by passing the water through an anion-exchange resin which contains both weakly basic and strongly basic functional groups, the strongly basic functional groups having been charged with a dithionite or with a reaction product of a dithionite and an aldehyde.  The exhausted anion exchange resins are regenerated with an aqueous alkali or ammoniacal solution of a dithionite or a reaction product of a dithionite and an aldehyde, which solution contains a quantity of alkali or ammonia sufficient to convert the weakly basic exchanger groups into the base form.  Specifications 654,706, 740,840, 799,620, 816,583, 867,769, 885,719, French Specification 855,849, German Specification 848,257 and U.S.A. Specification 2,591,573 are referred to.
Patent GB-280760-A (GB)
Title: Safety lock for railway carriage doors
IPC: E05B65/14
Filed: 1927-02-22
Abstract: 280,760. Evans, C. R., and Watts, F. C. A. Feb. 22, 1927. Pneumatically controlled fastenings.-Railwaycarriage, doors D carry a rubber P engaging on closing the door, a rubber nozle F carried by a spring-pressed tube. E sliding air-tight within a. tube C branching from the main vacuum pipe B. The tube E has apertures H which are open to the pipe! B when the door is closed so that the main vacuum pressure keeps the door closed.
Patent GB-329367-A (GB)
Title: Improvements in or relating to supporting arrangements for electric conductors
IPC: H04Q1/06
Filed: 1929-02-15
Abstract: 329,367. Automatic Telephone Manufacturing Co., Ltd., Wickerson, S. A., and Kessler, F. Feb. 15, 1929. Drawings to Specification. Automatic exchange systems. - According to the Provisional Specification, in an automatic telephone exchange, the cables on a single switch rack are carried in pressed steel troughing. Power distribution to a rack of automatic switches is effected by flat copper bus-bars, which may be in parallel and are preferably supported on porcelain insulators, the bus-bars being protected by sheet-iron covers, and the various bars of a set being preferably supported apart a distance equal to the width of a bar so that the simple lap joints may be made beween adjacent lengths. Distribuion to individual racks is preferably made through circuit-breakers supported by current-carrying rod or strip directly from the bus-bars. Means mav be provided to give an alarm when a circuitbreaker trips.
Patent GB-128157-A (GB)
Title: An Improved Adjustable Set Square.
IPC: B43L7/12
Filed: 1919-03-03
Abstract: 128,157. Westwood, J., and Mathops, Ltd. March 3, 1919. Squares.-The movable arm 2 of an adjustable set-square is connected to the body 1 by means of toggle-links 7, 5 pivoted at 8, 6 respectively. The link 7 is connected to the link 5 near the outer end of the latter, and the link 5 acts as a pointer to indicate, in conjunction with the scale 4, the angle at which the square is set. The link 5 may be in the form of a flat plate and may have additional pointers to indicate gradients &c. In a modification, the link 5 is replaced by a pivoted graduated semicircle indicating, in conjunction with a fixed mark on the body 1, the angle between the sides of the square.
Patent GB-693349-A (GB)
Title: Improvements relating to grease-lubricated bearings and sealing devices therefor
Inventor: HYBBINETTE NILS PER HENRIK
IPC: F16C33/78
Filed: 1952-02-27
Abstract: 693,349. Stuffing-box substitutes. AKTIEBOLAGET SVENSKA KULLAGERFABRIKEN. Feb. 27, 1952, No. 5178/52. Class 122(v) In a grease lubricated bearing unit comprising a housing 4 accommodating a roller bearing 5 and a sealing device at each side of the bearing, to ensure that when the unit is charged with grease under pressure excess grease escapes from one side only of the bearing, one of the sealing devices 15 has a small running clearance 17 with the bearing shaft 2 and is provided with an annular flexible lip 16 that is pressed into contact with the shafts by the grease pressure to prevent escape of grease past that device whilst the other sealing device has a small running clearance that permits escape of excess grease. When charging ceases and the grease pressure is relieved the flexible lip 16 returns to its original position clear of the shaft 2. The sealing device 15 is a U shaped ring axially spaced from the bearing 5 to provide an annular space in the housing 4 to which pressure grease is supplied when charging through passages 19, 20 in the shaft 2; the other sealing device is a labyrinth formed by intermeshing discs 10, 11. The sealing ring 15 as a whole, or only the flexible lip 16, may be made of flexible material.
Patent GB-915443-A (GB)
Title: Neutron-absorbant shield
Inventor: JENSON BROR BORGE SKYTTE
IPC: G21F1/10
Filed: 1961-02-13
Abstract: A neutron-absorbent shield consists of or contains one or more boric acid esters of aliphatic alcohols containing 9 carbon atoms or more. The metaboric acid esters of cetylic, myristic, stearic and oleic acids are preferred.  In examples, these esters are made by melting the appropriate alcohol in a vessel equipped with a stirring apparatus scraping the bottom, adding finely pulverized boric acid and heating to 150 DEG -160 DEG C.  A metaboric acid ester of stearyl alcohols, when cast in the beam catchers of a neutron spectrograph, showed satisfactory shielding properties.  The boric esters may be mixed with an organic plastic material which is able to form a solution with the ester.  Paraffin wax or other waxes and polyethylene are suitable plastic materials.  For example the metaboric acid ester of stearic alcohol and polyethylene are mixed by melting together with stirring and the melt is cast into blocks which are easy to machine by saw and lathe.  From these blocks, smaller blocks are sawn out which are suitable for stacking into neutron shielding walls in nuclear reactor partitions.
Patent GB-1119324-A (GB)
Title: A process for the production of fibres and filaments
Inventor: PETERS WERNER
IPC: D01F6/20
Filed: 1967-02-03
Abstract: Polyacrylonitrile, an acrylonitrile copolymer, polyvinyl chloride or chlorinated polyvinyl chloride is dissolved in dimethyl formamide, dimethyl acetamide or dimethyl sulphoxide together with 1-10% by weight of the total amount of all of the polymers and copolymers in the solution of a sulphonate group containing copolymer of styrene or a styrene derivative, said copolymer having a 1-15% by weight sulphur content and the solution is spun to form filaments or fibres.  In the examples, polyacrylonitrile, or polyvinyl chloride, and a sulphonated styrene-acrylonitrile copolymer are dissolved in dimethyl formamide. The solution is wet-spun to form fibres which are dyed.
Patent GB-721089-A (GB)
Title: An optical projector for stereoscopic transparencies in disc-type holders
IPC: G03B23/10
Filed: 1953-02-26
Abstract: 721,089. Optical projection apparatus. SAWYER'S, Inc. Feb. 26, 1953 [Jan. 12, 1953], No. 5462/53. Class 97 (1). A projector for stereoscopic pairs of images in a disc-type holder comprises means for locating the holder with one pair in projection position, feed means to rotate the holder to bring other pairs into position and means to adjust that position to produce relative vertical adjustment of the two projected images. The disc-type holder to be projected is as shown in Fig. 4, where companion images of each pair AR, AL, &c. are diametrically opposed. Holes 92 are engaged by the locating and feed means. The form of mechanism shown is mounted between a rear plate 25 and a plate, not shown, spaced from it and carried on pillars 34, 35, 36. Projecting from this latter plate is a pivot 57 which does not extend as far rearward as the plate 25. The disc holder is inserted from the top into the space between the plate 25 and a pressure-plate 74 being guided by three flanges, such as at 76, projecting from the sides and bottom of the plate 74 into holes 78 in the plate 25. The plate 74 is carried on the pivot 57 and has stiffening ribs 82 and fingers 89, 90 with embossed projections 91 to engage the holes 92 in the disc to locate it. Relative vertical adjustment of the two transparencies is produced by a lever 23 which rotates an eccentric cam engaging a projecting portion 97 of the plate 74. Thus a small rotation of the plate 74 about the pivot 57, together with the holder, is produced. Rotation of the holder for feed purposes is produced by a lever 20 secured to a plate 50 also carried on the pivot 57. The plate 50 is formed with two spring-fingers 60, 61 having bent end portions 62 which, in the position shown, bear on bosses 88 on the plate 74 to press it towards the plate 25 to locate the transparency holder. Initial rotation of the plate 50 by the lever 20 moves the end portions 62 off the bosses 88 to release the pressure. Thereafter a resilient feed claw 73, also secured to the plate, drops through an arcuate slot 95 in the plate 94 to engage one of the holes 92 in the holder and to rotate it. During the feed movement any adjustment previously applied by the lever 23 is removed by engagement of a projection 108 thereon with a notch 111 in the lever 20, whereby the lever 23 is centralized. The various mechanism plates have registering projection apertures 84. During a feed movement a pivoted shutter, not shown, is moved to cover these apertures by the cam portion 64 at the end of the lever 20. Differently orientated polarizing filters are mounted, in the light beams behind the plate 25.
Patent GB-1490656-A (GB)
Title: Colour television system
IPC: H04N9/86
Filed: 1975-02-10
Abstract: 1490656 Television systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 Feb 1975 [13 Feb 1974] 5487/75 Heading H4F A colour television signal comprises a first carrier fy, which is frequency modulated with the luminance signal, and a second carrier fc which is modulated with the chrominance signal. Frequency fc is related to the instantaneous frequency fy such that fy=n.fc, where n is integral, e.g. 2 or 3. Frequency fc lies between zero and the first order lower sideband of fy when modulated at the highest modulation frequency. The signal may be recorded on a magnetic carrier or an optically readable disc. Its mixing products are less disturbing than are those of a conventional signal in which fc and fy are not integrally related. In one arrangement, Fig. 4, a standard PAL signal Vs is applied to filter 1 to extract the luminance Y and chrominance Es signals. The luminance signal frequency modulates a carrier fy at 2 to provide a signal Ey which is applied to combining unit 8 and to frequency divider 5. The divider output is mixed at 4 with the chrominance signal Es which is on the standard chrominance carrier, 4À43 MHz. Mixer 4 feeds a second mixer 6 which also receives the standard 4À43 MHz carrier, mixer 6 providing the quadrature modulated chrominance signal Ec which is combined with the luminance signal at 8 to give the required signal V R . In the case of magnetic recording Ec and Ey are merely added at 8, but in the case of optical recording Ec is added to Ey by pulse width modulation. To regain the standard signal from the recorded signal (Fig. 5, not shown) Ec and Ey are extracted from V R  by filtering, the 4À43 MHz carrier is mixed with EC, and the result mixed with a carrier obtained by division of Ey to provide the chrominance signal Es which is then added to the luminance signal Y demodulated from Ey. In another arrangement (Fig. 6, not shown), employing a line sequential chrominance signal C, signal C is added to the frequency modulated luminance signal Y as pulse width modulation. The resulting signal passes to a pulse shaper which generates a square pulse of fixed duration at each transition in the signal, the sequence of pulses being the desired signal V R . The original signals Y and C may be reconstituted (Fig. 8, not shown) by applying V R  to a frequency demodulator via a high pass filter to give Y and to an amplitude demodulator via a band-pass filter to give C. A signal C<SP>1</SP> which can be processed by a standard PAL receiver can be obtained from C by the arrangement shown in Fig. 9. Signal C is applied to modulators 30, 33 alternately by switch 28 switched at half line frequency F H . Colour burst signals from unit 29 are added to the (R-Y) and (B-Y) signals to provide the necessary alternating colour burst signals. The modulators are also fed with the 4À43 MHz chrominance carrier and the modulator outputs summed to give C<SP>1</SP>.
Patent GB-1506591-A (GB)
Title: Communication system
IPC: H04N7/173
Filed: 1975-02-10
Abstract: 1506591 Selective signalling G E HULZ 10 Feb 1975 [11 March 1974] 5600/75 Heading G4H In a communication system (e.g. pay TV), a central station transmits signals (e.g. TV programmes) to a plurality of remote stations (e.g. over a cable), each remote station including means to transmit information signals to the central station at generally regular but random intervals to avoid interference between stations. The information signals are serial digital signals specifying the remote address and which TV channel a TV receiver at the remote station is tuned to. In each remote station, power is supplied to the transmitter to cause transmission when a capacitor, charged from the power supply and a noise generator, reaches a threshold. In a modification, horizontal sync. signals are sensed from the TV receiver and pulses produced from them are summed with ramp and noise signals to control connection of power to the transmitter when a threshold is reached, and time coincidence of information received from the remote stations and (delayed) horizontal sync. signals as produced at the central station is checked at the latter, and differently timed horizontal sync. signals are used for different TV channels. Billing of the customer is conditional upon the same information being received at the central station a predetermined number of times.
Patent GB-1209542-A (GB)
Title: Improvements in and relating to a magazine for automatic firearms
Inventor: NOVOTNY BOHUSLAV
IPC: F41A9/81
Filed: 1968-02-05
Abstract: 1,209,542. Magazine for automatic firearms. VYZKUMNY A VYVOJOVY USTAV ZAVODU VSEOBECNEHO STROJIBENSTVI. 5 Feb., 1968 [6 Feb., 1967], No. 5625/68. Heading F3C. A cartridge belt magazine for automatic firearms is provided with means for feeding a cartridge belt to the firearm and has its interior divided by a fixed partition 28 and a spring- loaded movable vane 37 into two variable volume compartments 39, 40, one 39 of the compartments being adapted to house a full cartridge belt and the other 40 adjusted to house the cartridge belt after it has been emptied. In the construction shown the vane 37 is mounted on a rotatable shaft 29 which also carries an arm to indicate the amount of ammunition remaining in the magazine (Fig. 4, not shown). The means for feeding the cartridge belt to a firearm comprises a feeder 7 arranged in the mouthpiece 1 of the magazine. The feeder is actuated by a lever arrangement driven by the breechblock and a ratchet arrangement (Fig. 1, not shown). Two lids 2, 2<SP>1</SP> are detachably secured to the magazine casing 3.
Patent GB-925520-A (GB)
Title: Semi-conductor circuit and method of making same
IPC: H05K1/18
Filed: 1961-02-15
Abstract: 925,520. Monogrammic signs. BURROUGHS CORPORATION. Feb. 15, 1961 [Feb. 25, 1960], No. 5658/61. Class 118. [Also in Group XXXVI] A semi-conductor diode matrix for use, e.g., with a visual display device, comprises a number of strips of semi-conductor material, each strip having one or more integral protrusions forming separate unidirectional current conducting devices. As shown, Fig. 1, a wafer 11 of N-type silicon has a layer of acceptor impurity such as boron vapourdeposited on one surface and diffused into the wafer at c. 1300 C. to form a P-N junction below the said surface. Alternatively, the wafer may be P-type and have a layer of N- type impurity such as phosphorus diffused in; also germanium may be used. The wafer may then be coated with silver or other conductive material. It is next machined ultrasonically to remove portions of P-type material and the adjacent N-type material to a depth below the P-N junction, leaving upstanding mesas 13 each comprising a P-N junction. The matrix thus formed is placed on a base 25 of porcelain &c., Figs. 4 and 5, so that each mesa 13 contacts a predetermined one of a plurality of conductive paths 21 printed in silver, palladium, &c. and fired on to the base. -The assembly is fired or cured to bond the mesas 13 to the conductive paths 21 and the end portions 16 of the wafer to connectors 23. The wafer is ultrasonically sliced between rows of mesas in a direction perpendicular to conductive paths 21 to form strips of semi-conductor material such as 15a, each being connected via a connector 23 to a terminal 31 representing a digit. A signal applied to a terminal 31 energizes, through the mesas of its associated strip and the relevant conductive paths 21, elements of a display device 19 to provide a visual display of the appropriate digit. The elements may be cathodes of a neon tube device having a common anode. Preferably, the strips and adjacent printed circuits are potted in glass, epoxy resin &c. Fig. 6 (not shown), depicts an alternative printed circuit arrangement.
Patent GB-355766-A (GB)
Title: Process for the extraction of phosphorus in the form po
IPC: C01B25/12
Filed: 1930-02-21
Abstract: Phosphorus-containing substances such as iron ore, coke, furnace dross, blast-furnace dust and other residues, or natural phosphates are smelted in a reducing atmosphere in the presence of iron ore, and the meltings obtained treated, for example in a converter, on a neutral lining to obtain phosphoric anhydride, which can be condensed or converted into monocalcium phosphate. It is stated that the ferro-phosphorus or phosphorus meltings obtained may be added to other meltings to give the phosphorous content necessary for treating by the Thomas process, or in a converter, reverberatory, or Martin furnace.