baber/WOPTO huggingface dataset:
Patent GB-1379167-A (GB)
Title: Dc static switching circuits
IPC: H02M3/156
Filed: 1972-02-09
Abstract: 1379167 Protective arrangements WESTINGHOUSE ELECTRIC CORP 9 Feb 1972 [15 March 1971] 6165/72 Heading H2H Apparatus wherein the control of power from a D.C. source to a load is controlled by means of a series connected semiconductor switching device is modified by the provision of means whereby the maximum current flow is limited to a predetermined value. The current flowing in a load 40 supplied from a D.C. source 30 is controlled by a series connected transistor Q1. Control signals for the base of the transistor are provided by a core-timed oscillator 36 which includes a saturable autotransformer T1. The signals produced by the oscillator are in the form of square waves having transient spikes and are applied to the base of the transistor Q1 by way of diodes CR1, CR2 and a transistor amplifier 47. Under overload conditions the load current is sensed so as to control a current limit controller 46 which by way of the transistor amplifier 47 modifies the signal applied to the base of transistor Q1 in such a manner as to limit the current flowing in the load 40. The current sensing may be effected by use of a resistive shunt connected on the supply side of the transistor Q1. As described the circuit is claimed to produce a load current I L  which is free from transient spikes.
Patent GB-836484-A (GB)
Title: Improvements in or relating to circuit arrangements for polarized relays
IPC: H01H47/20
Filed: 1958-02-26
Abstract: 836,484. Code telegraphy. TELEFONAKTIEBOLAGET L.M. ERICSSON. Feb. 26, 1958 [March 20, 1957], No. 6232/58. Class 40 (3). In a circuit arrangement, whereby the effects of noise voltages on a polarized relay are suppressed, and for use in audio frequency receivers, the relay has its operating winding L1, Fig. 2, in series with a variable value resistive means, e.g. a transistor, which is controlled by signal pulses, and has its holding winding L2 in series with a fixed resistor W. A voltage source is connected between the junction of the variable means and the resistor W and the junction of the two windings. A further resistor R, which has a value greater than the D.C. resistance of the windings but less than their A.C. impedance, connects the junction of L2 and W and the junction of L1 and R.
Patent GB-457550-A (GB)
Title: Improvements in the pneumatic transmission of power
IPC: F16D31/02
Filed: 1935-02-27
Abstract: 457,550. Pneumatic power transmission. ARNOUIL, M. P., Avenue de la Gare, Libos, Lot et Garonne, France. Feb. 27, 1935, No. 6289. Application for addition to 417,426. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 28, 1935]. [Class 8 (ii)] A plate 2 on a driving shaft carries cylinders 42 counterbalanced by weights 43, while the pistons are connected to separate bends of the driven crankshaft 8. The transmission is varied by levers 32 acting to hold the outlet valves 46 of the cylinders closed. These levers are actuated through a sleeve 14 on the shaft 8 which may be moved at starting by a clutch pedal 20, while at high speeds of the driven shaft a governor 25 holds the valve closed; the ball of this governor is integral with one of the links. A pedal 20<1> permits declutching.
Patent GB-419913-A (GB)
Title: Improvements in and relating to heating and cooling systems for circulating liquids in engines and compressors
IPC: F01P11/02
Filed: 1934-02-27
Abstract: 419,913. Keeping cooling-water hot. MATHER, C., 353, The Cliff, Higher Broughton, Salford, Lancashire. Feb. 27, 1934, No. 6291. [Class 7 (ii).] In a system having a heat-insulated tank 7 for storing the cooling liquid in a warm condition while the engine is idle, as described in Specification 387,418,the radiator 1 is provided with headers 2, 3 of the same capacity as similar lengths of the inlet and outlet pipes 4, 5, and filling and venting means are provided elsewhere than on the radiator. The tank is connected to the pipe 4 by a pipe 11 fitted with valves 16, 17, 18, and the pipe 11 is connected to the pump 9 by a pipe 8 with a valve 19. A vent and filling pipe 13 with a valve 20 is connected between the valves 17 18, and the pump is connected to the bottom header of the radiator by a pipe 10 with a drain valve 22. A drain pipe 14 with valve 21 is provided on the pipe 8. When the engine is started the valves 16, 17 and 18 are opened and the valves 19, 20, 21 and 22 closed, the liquid being delivered from the tank to the radiator, &c., in a warm condition. While the engine is running the vent valve 20 is preferably opened. When the engine is stopped the valves are set so that the pump may fill the tank, after which the valve 16 is closed and the drain valves 21, 22 opened.
Patent GB-608796-A (GB)
Title: Improvements in and relating to the suspension of curtains
IPC: A47H1/122
Filed: 1946-02-28
Abstract: 608.796. Curtain suspensions. STOLLERY, C. A. S. Feb. 28, 1946, No. 6325. [Class 52(v)] A curtain suspension device comprises spring controlled and horizontally disposed hinged links suspended from overhead rollers 15 which run on the fixed curtain rail 12 and are provided with curtain suspension hooks, which also form the link hinges, so that the curtain, when opened, does so in a neatly formed condition. The hinges forming part of the suspension hooks 24, 26 are each provided with helical springs 28 the ends 29, 30 of which cooperate with adjacent links to tend to open and extend the links. A cord 31 threaded through the runners provides the operating means for the curtains. The rails are supported by inverted L-shaped brackets. the vertical limb 39 of which is slotted at 44 and milled on its outer face to co-operate with the milled nuts of screws which adjustably secure the rails in position.
Patent GB-415339-A (GB)
Title: Improvements in or relating to devices for supporting bicycles and the like
IPC: B62H3/00
Filed: 1934-02-27
Abstract: 415,339. Cycle stands. BUCHARDT, A. V. S., 106, Hulgaardsvej, Copenhagen. Feb. 27, 1934, No. 6383. Convention date, Feb. 27, 1933. [Class 136 (i).] A portable stand for bicycles &c. comprises a block or like member (e.g. of cast iron) of pyramidal or conical, or part pyramidal or conical, form, the sides of which slope downwards, so as to lessen the obstruction to pedestrians &c., the block having in its upper surface one or more slots to receive a cycle wheel. In the form shown, the block 1 has a longitudinal slot 9 in its flat upper surface 2, and is provided with an approximately vertical side 3 adapted to abut against a kerbstone &c. or against another block. The block rests on supporting-ribs 7 so that rain water can flow beneath it, and a fluting or channel 8 allows water to flow along the gutter. The slot 9 may be formed along a part of its length with a narrower portion to receive a child's cycle &c., this being effected for example by securing a bar along one side of the slot. A single block may be provided with a number of parallel slots arranged obliquely, and if desired in staggered relation. In another form, the block is sector-shaped, with radial slots, and a number of such blocks may be set together around a tree &c.
Patent GB-525773-A (GB)
Title: Improvements in pneumatic hammers
IPC: B25D9/08
Filed: 1939-02-28
Abstract: 525,773. Pneumatic hammers. MAIRE, C. A., and BOURSET, R.A. Feb. 28, 1939, No. 6597. Convention date, March 1, 1938. [Class 124] In a portable or other pneumatic hammer in which a striking piston 7 is returned by a spring 8, the piston performs only a single operative stroke for each actuation of a manual control valve 13. The head 9 of the hammer is slidably mounted between stops 20, 21 on the cylinder 1, and compressed air or other fluid is continuously supplied by a conduit 12 which may be fitted with a flow-controlling cock. A partition 14 divides the head 9 into two chambers 10,11 and is formed with a sleeve 15 to accommodate the tubular slide valve 13, a spring 19 being mounted between the closed end 16 of the valve and the head 9. The opposite open end 18 of the valve is tapered as at 30 to engage an orifice 6 in the end wall 5 of the cylinder when in operation. Tapering ports 17 in the valve are then uncovered, and compressed air passes into the cylinder. During the return stroke the expanded air escapes through one or more orifices 23 ; leakage apertures 24 also are provided in the valve. The power of each stroke is regulated by adjusting the quantity of compressed air admitted at each stroke. For this purpose the forward stop 21 for the head 9 is adjustable by means of a ring nut 25 carrying a stud 27 which engages in a notch 28 in the cylinder 1. For the same purpose the escape of air from the cylinder through orifices 22 may be controlled by means of a sliding ring 31. The admission orifices may also be controlled by means of a nut adjustably mounted on the valve. In one modification the end of the piston 7 has an extension which engages with play in the orifice 6, additional ports being provided i n the end wall 5 for engagement by the tapered end 30 of the valve. In a second modification a valve closed at both ends is mounted in a fixed head at right angles to the cylinder 1, and is operated by a pivoted handle. In a third modification the valve 13 is arranged parallel to the cylinder 1 and the head has a third chamber continuously connected to the second chamber.
Patent GB-1192346-A (GB)
Title: Improvements in Vehicle Headlamps
IPC: H01K9/08
Filed: 1969-02-07
Abstract: 1,192,346. Vehicle headlamps. ROBERT BOSCH G.m.b.H. 7 Feb., 1969 [8 Feb., 1968], No. 6630/69. Heading F4R. A vehicle headlmap comprises a cylindrical quartz halogen double filament bulb 1, wherein a main beam filament 2 lies substantially in the focal plane 7 of a parabolic reflector 4 and a dipped beam filament 3 lies in front of the focal plane of the reflector, and both filaments lie outside the axis of symmetry 5 of the cylindrical bulb and approximately on the optical axis A of the headlamp, there being a dipping cap 6 associated with the bulb to produce an assymetrical dipped beam, and a partial mask adjacent the apex 12 of the parabolic reflector 4. The dipping cap and mask, which are provided to prevent glare, are so placed as to prevent light rays reaching the reflector which after reflection would leave the lamp in an upward direction 22. The mask may comprise an unmetallized or blackened area on the reflector or a non-reflecting piece of sheet metal fixed to the reflector, Fig. 3, not shown. Alternatively an additional auxiliary reflector may be fitted to reflect the dipped beam in the required direction. In additional screen may be provided, Fig. 5, not shown, to prevent part of the main beam from being scattered by the headlamp glass in unwanted directions.
Patent GB-1466995-A (GB)
Title: Electrical information recognition and retrieval
IPC: G06K7/08
Filed: 1974-02-13
Abstract: 1466995 Character recognition systems ADDRESSOGRAPH MULTIGRAPH CORP 13 Feb 1974 [14 Feb 1973] 6632/74 Heading G4R Legible characters in the form of differences of surface level, e.g. embossed or raised portions, of a record, e.g. a credit card, are machine read by apparatus which establishes an electric potential on the side of the record carrying the level differences and then scans the record with a probe spaced from the record. A current pulse appears in the probe when it passes over a change in level, and the probe output feeds recognition circuitry. The record, e.g. a credit card, is formed of insulating material, e.g. plastics. The card is placed on a conductive plate. In one arrangement the upper face is charged by exposing it to a corona discharge electrode 22, Fig. 3, or charged by a conductive brush connected to a high potential and moved over the face. A row of spaced probes 36 is moved over the card. The length of the row corresponds to the height of the characters to be read. Whenever a probe passes over a change in surface level, as at the leading edge of the card or at the edges of a character, a current pulse appears in the probe, the polarity of the pulse corresponding to the direction of the change in level. The probes feed circuitry (Fig. 8, not shown) which for each probe develops a binary signal representative of the surface level variations across a corresponding horizontal slice of the character being read. These signals feed recognition circuitry, not described.
Patent GB-1502274-A (GB)
Title: Microscope and magnification changer
IPC: G02B17/08
Filed: 1974-02-14
Abstract: 1502274 Stereo microscope H H HOPKINS 10 Feb 1975 [14 Feb 1974] 6762/74 Heading G2J Stereoscopic microscope has a concave mirror 21 and a convex mirror 43 arranged to produce two spacially separated images from an object and to deliver parallel beams up the tubes to separate eyepieces. An image changer is incorporated in the tubes.
Patent GB-635568-A (GB)
Title: Process for the manufacture of antiseptic eye lotions
IPC: A61K9/00
Filed: 1947-03-11
Abstract: 5-Aminoacridine salts are prepared by dissolving 5-aminoacridine in an organic solvent, e.g. alcohol or acetone, and the resulting solution is reacted with one or more acids. Suitable acids specified are aliphatic carboxylic acids, mono or polysubstituted aliphatic acids, the substituents may be chlorine, bromine, iodine or hydroxy, aromatic carboxylic acids, the neuclus being derived for example from benzene, naphthalene or anthracene, substituted or polysubstituted aromatic acids, the substituents being for example chlorine, bromine, iodine, methoxy, methyl, hydroxyl, methyl or carboxyl, an aromatic mono- or polysulphonic acid, which may contain any of the above substituents, and an inorganic acid containing phosphorus or boron. In examples, 5-aminoacridine salts are prepared from salicylic, acetic, tartaric, sulphuric and oxalic acids. ALSO:An antiseptic eye lotion is obtained by dissolving one or more salts of 5-aminoacridine in water and adding an aqueous solution of boric acid and borax to bring the pH of the solution to between 5 and 8.5.  Further ingredients that may be added are zinc sulphate, chlorbutol, sodium chloride, distilled witch hazel extract and sambuci water.  A number of suitable types of acids from which the 5-aminoacridine salt may be derived are given.  In the examples, the 5-aminoacridine salts are derived from salicylic, acetic, tartaric, oxalic and sulphuric acids.
Patent GB-1467528-A (GB)
Title: Piperazinium 1-p-chlorobenzoyl-2-methyl-5-methoxy-3-indolyl acetate
IPC: C07D209/28
Filed: 1975-02-18
Abstract: 1467528 Piperazine bis-indomethacin salt LABORATORIOS ROGER SA 18 Feb 1975 [2 March 1974] 6827/75 Heading C2C The invention comprises the title compound and a process for preparing it by stirring indomethacin with anhydrous piperazine in stoichiometric proportions, in presence of acetone, and cooling and filtering the mixture. Therapeutic compositions having antiinflammatory and analgesic activity comprise the above salt, and may be administered orally or rectally.
Patent GB-567842-A (GB)
Title: Reinforced plastic material and the production thereof
IPC: C04B14/48
Filed: 1943-04-30
Abstract: A reinforced material, e.g. in sheet, board, block, tube or rod form, comprises a plastic material and an embedded fleece composed of long, unentangled, approximately parallel straightened metallic shavings. Several fleeces may be superimposed with the filaments in adjacent layers crossing.  Groups of filaments are taken from different cutters of a metal wool making machine, and led into close parallelism, to form a band or web, which may be wound on a roller, with interleaved paper, for storage, and later used as required.  The filaments may be straightened by combing, and resinous threads or soft metal clamps may be affixed at intervals to preserve parallelism.  The plastic material, which may be applied in solution, molten, mixed with water, or in a dry powdered form and fused in situ, may comprise viscose, cellulose, or cellulose derivatives, latex, natural or artificial rubber, synthetic resins, gums, dextrin agar agar, gum tragacanth, glue, bone dust, casein, yeast, stearin, paraffin wax, potato powder or paste, thickened sulphite lye, colophony, cement, lime, gypsum, waterglass, glass powder, asphalt, bitumin tar, or pitch singly or in admixture.  The filaments may be cleaned, degreased, and coated with waterglass, oil paint, chlorinated rubber, galvanised, or plated with nickel or chromium. Vegetable, animal, and mineral fibrous and powdered fillers, pigments or colours, may be added to and applied between layers.  The plastic material may comprise a mixture of calcium sulphate, magnesite, glass powder, casein, kieselguhr and lead oxide mixed with a pulp of sawdust which has been wetted with a solution containing magnesium chloride, sulphuric acid, and gum tragacanth, or may comprise sawdust mixed with a solution of casein in dilute aqueous ammonia.  The fleece of metal filaments may be impregnated by the method described in Specification 559,683, [Group VIII].
Patent GB-491923-A (GB)
Title: Improvements in or relating to alternating or direct current electric motors
IPC: H02K9/16
Filed: 1937-03-09
Abstract: 491,923. Motors. SIEMENS-SCHUCKERTWERKE AKT.-GES. March 9, 1937, Nos. 6915 and 6916. Convention dates, March 9, 1936 and Oct. 14, 1936. [Class 35] Cores ; cooling.-In a motor to be run for considerable periods at a substantially constant load the ratio of the output coefficient to the rotor diameter is given by curves according to Figs. 1 and 2 (not shown), the effective rotor length is between 1À3D and 2À7D, where D is the rotor diameter, and preferably between 1À6D and 2À3D: furthermore other dimensions are as follows; for a four-pole machine the stator outer diameter is between 1À5D and 1À8D, preferably between 1À65D and 1À75D and the slot depth is between À17D and À22D; for a six-pole machine the stator outer diameter is between 1À4D and 1À7D, preferably between 1À52D and 1À6D, and the stator slot depth is between À15D and À2D; for an eight-pole machine the stator outer diameter is between 1À3D and 1À5D, preferably between 1À4D and 1À45D, and the stator slot depth is between À12D and À16D; in all cases the product of the number of stator slots and the slot width is between 2D and 2À3D. The diameter of the rotor shaft, is between À56D and À43D for four-pole machines, between À5D and À4D for six-pole machines, and between À45D and À36D for eight-pole machines. The product of the rotor slot width and the number of rotor slots is between 1À45D and 1À55D for four-pole machines, between 1À48D and 1À58D for six-pole machines, and between 1À5D and 1À6D for eight-pole machines, the rotor slot depth being between À125D and À132D. The theoretical basis of these ratios is discussed in the Specification. The Figure shows an enclosed motor constructed according to the invention, and more particularly the cooling- . arrangements therefor. External air is forced by a fan 9 between cooling-channels 8 through which the internal air is forced by a fan 10 returning through the rotor slots and behind the stator. At the back of the stator are arranged guide plates 14 so that the velocity of the air increases gradually to a maximum at the middle of the stator and eddy currents are diminished.
Patent GB-589955-A (GB)
Title: Improvements in sealed electric cable
IPC: H01B13/32
Filed: 1945-03-20
Abstract: A sealing and impregnating composition for electric cables comprises a suspension of 100 parts of polymerized vinyl chloride in 60 to 150 parts of plasticiser, the plasticiser being a mixture of a major amount of di-(2-ethyl-hexyl) phthalate and a second plasticiser of less compatibility.  The vinyl chloride resin is of high molecular weight and may be a copolymer of vinyl chloride with vinyl acetate, vinyl propionate, methyl acrylate, butyl acrylate, acrylonitrile, or vinylidine chloride and maleate esters.  The resin may also be mixed with another compatible plasticiser such as dicapryl phthalate, tri-(2-ethyl-hexyl) maleate or tricresyl phosphate, and also with one of limited compatibility such as methyl cyclohexyl stearate, methoxyethyl oleate, acetylated castor oil, acetylated polymerized castor oil, or the methyl ester of polymerized ricinoleic acids.  The resin may be stabilized by litharge, basic lead carbonate, lead stearate, lead oleate or basic lead sulphate, and the flame resistance may be increased by adding antimony oxide.
Patent GB-1060036-A (GB)
Title: Improvements in or relating to the alkylation of phenols
Inventor: SHARP JOHN ALAN
IPC: C07C37/16
Filed: 1965-02-17
Abstract: Alkylphenols are made by treating a phenol having a free o -position with an aliphatic alcohol in the presence of an aluminium phenoxide catalyst.  The catalyst may be prepared in situ by heating the phenol and the alcohol with aluminium or it may be preformed by heating the phenol and aluminium only.  The alkylation may be effected at 220-350 DEG  C. under autogenous or higher pressure.  Examples are given in which (1) phenol and methanol yield o -cresol, minor proportions of anisole, xylenols and m-and p-cresol being also obtained and (2) o -cresol and methanol yield 2,6-xylenol, minor proportions of other xylenols and of 2,4,6- and 2,3,6-trimethylphenols and o -methylanisole being also obtained.  Ethanol and isopropanol are other specified alcohols which may be used.
Patent GB-381085-A (GB)
Title: Means for extinguishing a fire at the carburetter of an internal combustion engine
IPC: A62C3/07
Filed: 1932-03-08
Abstract: 381,085. Engine stop-gear. McMILLAN, P. S., 13, Dundas Street, Glasgow. March 8, 1932, No. 6987. [Class 122 (iv).] An extinguishing device a for carburetter fires is set in operation by a cable and a handcontrol m arranged at the driver's or passengers' seat. The cable moves an actuating lever g which is also connected to the movable contact o<1> of a cut-out switch o provided in the ignition circuit of the engine.
Patent GB-609139-A (GB)
Title: Improvements in or relating to lighters
IPC: F23Q2/08
Filed: 1946-03-06
Abstract: 609,139. Frictional igniters. HUTCHINSON, L., BRISTOW, F. C., and BINKS, F. W. March 6, 1946, No. 7018. [Class 75(iii)] In a lighter a channel-sectioned lever 9 pivoted at 10 to the fuel reservoir 1 is slotted at 22 to engage a pin 20 on a bifurcated lever 15 which carries a wick cap 16 and is pivoted on a spindle 12 carrying the friction wheel 11. The sides of the lever 9 are slotted at 17 to pass over the spindle 12. Pressure on the end 30 of the lever 9 raises the wick cap against the resistance of a spring 26 and a leaf spring, carried by the lever 15 rotates the wheel 11 to produce sparks at a flint 7 for igniting the wick 5. The fuel reservoir may be provided with a perforated extension 35 to act as a windshield. The levers 9, 15 and wheel 11 form a complete unit detachably mounted on the lighter body by screws secured to the ends of the pivots 10, 12.
Patent GB-799340-A (GB)
Title: Improvements in or relating to a process for the manufacture of bladed wheels for hydraulic couplings and converters
IPC: F16D33/20
Filed: 1956-03-06
Abstract: 799,340. Making blade wheels for hydraulic couplings and the like. REGIE NATIONALE DES USINES RENAULT. March 6, 1956 [May 14, 1955], No. 7027/56. Class 83 (2). A bladed wheel for an hydraulic coupling or converter has its external wall 2 and blades 5 formed as a single casting, and its internal wall 7 formed as another casting, the two parts being bonded together by a synthetic resin which is subsequently polymerized. The parts are cast in light alloy and machined on the surfaces 3, 4, 6, 8, 9. The internal part forms on its surface 9 a labyrinth joint which in service co-operates with a complementary surface on an adjacent bladed wheel 10, Fig. 2 (not shown). The synthetic resin is applied under heat to the surfaces 6, 8 which are then pressed together and the resin is polymerized.