baber/WOPTO huggingface dataset:
Patent GB-643963-A (GB)
Title: Improvements in or relating to fast and slow speed driving means for electric lifts and the like
IPC: B66B1/46
Filed: 1945-02-06
Abstract: 643,963. Control of two motors FOULDS, Ltd., E. A.. and FOULDS, W. G. Feb. 6, 1945, No. 2980. [Class 38(iii)] Driving means for lifts and the like comprises in combination a high speed alternating-current motor, a direct-current levelling motor which is adapted to be rheostatically braked, and switch means for alternative motor operation. An alternating-current motor 14 is supplied from mains 10 and is coupled to a direct-current motor 17. A transformer 15 affords a high voltage supply through a rectifier 16 and a low voltage supply is obtained from a transformer 19 and rectifier 20. The armature of the direct-current motor is shunted by a braking resistance 22 and the coil of a vibratory relay 21, the contacts of which control the high voltage supply to the field 17b which is connected in series with the coil 23a of a relay 23 controlling the supply to the armature 17a. The field 17b is connected in shunt with a discharge rectifier 24. When the lift approaches a selected floor a selector switch cuts off the supply to the alternating-current motor and a levelling switch energizes the field 17b to send a heavy current through the resistance 22 which energizes the relay 21 to break the direct-current field supply Thereafter the relay 21 will make and break until the braking voltage reaches a predetermined low value and the relay 21 is permanently closed whereupon the relay 23 is energized to close the circuit of the armature 17a and the lift is driven at a low speed until it is levelled at the desired floor. In a modification, the relay 21 is an ordinary relay and a low resistance is shunted across the contacts of this relay and the coil 23a.
Patent GB-982835-A (GB)
Title: Improvements in or relating to the tuning of resonant lengths of waveguide
Inventor: ASH ERIC ALBERT
IPC: H01P7/06
Filed: 1961-01-25
Abstract: 982,835. Klystrons; tuning resonant waveguides. STANDARD TELEPHONES & CABLES Ltd. Jan. 19, 1962 [Jan. 25, 1961], No. 2995/61. Addition to 982,836. Headings H1D and H1W. [Also in Division H3] In the apparatus described and claimed in the parent Specification, the dielectric tuning rod lies wholly within the resonant length and the feeder sections of the waveguide. As shown, Fig. 1, the rod 10 of rectangular cross-section slides along the feeder waveguides 9 and projects through a diaphragm 8 into a resonant length of waveguide 7, two lugs 11 projecting through a slot 12 cut in the waveguide 9 serving to support the rod in the waveguide. In a suitable adjusting mechanism, Fig. 4, the lugs are connected to a rider mechanism 16 which has two spring-loaded ball-bearings adapted to clamp the rider to the waveguide 9 whilst permitting a smooth longitudinal movement of the rider. A mounting arrangement 19 supports the waveguide 9 and the barrel 18 of a micrometer screw, the head 20 of the micrometer screw controlling the position of the rider 16. Specification 905,839 also is referred to.
Patent GB-1244932-A (GB)
Title: A typewriter case and a typewriter for use therewith
Inventor: WINKENS JOHAN JOSEPH
IPC: B41J29/13
Filed: 1969-01-20
Abstract: 1,244,932. Typewriters &c. J. J. WINKENS. 20 Jan., 1969 [22 Jan., 1968], No. 3123/69. Heading B6F. [Also in Division A4] A typewriter 13 is mounted on a wheeled carriage 4, 5 connected, as at 8, to one end of an extensible connector 6 secured at its opposite end 7 to a side wall of a case 1 in which the typewriter is housed when not in use. A connector 6 may be provided at each side. The wheels 5 may be lockable or retractable. In an alternative arrangement the wheels 5 are provided on the base of the typewriter.
Patent GB-233416-A (GB)
Title: Improvements in aerial receiving systems for wireless signalling
IPC: H01Q1/14
Filed: 1924-02-06
Abstract: 233,416. Threlkeld, T. G., and Butterfield, A. W. W. Feb. 6,1924. Aerials.-Interference by local electric disturbances, such as those produced by trams &c., is prevented by one or more shielding wires c, supported parallel and close to the receiving aerial a, and earthed at the end opposite to that of the aerial down-lead b. Several wires such as c may form a prism surrounding the aerial. Tuning and damping devices d, e may be connected in the earth leads of the shielding wires c.
Patent GB-978262-A (GB)
Title: Water-insoluble allergenically active substances
IPC: A61K39/36
Filed: 1961-01-26
Abstract: An allergenically active water-insoluble complex is prepared by treating the whole of an allergen material with an extracting liquid comprising a heterocyclic tertiary amine and an aqueous medium, filtering the aqueous extract so formed and adding alum to precipitate a water - insoluble complex.  The heterocyclic amine may be pyridine, lutidine or quinoline.  The aqueous medium may be a solution of sodium bicarbonate, sodium chloride and sodium hydroxide in water at pH 7.0.  The alum solution is preferably in acidic solution.  The precipitated complex is suspended in isotonic saline solution for administration by injection especially for the treatment of asthma and hay-fever.  The allergen may be (a) an inhalant allergen, e.g. dust, animal skin, hair, fur or feathers, seeds and particles from the breakdown of the bodies of insects and the pollen of weeds, grasses or trees, or (b) contact allergen, e.g. rabbit fur and cat fur, which by contact with sensitive individuals produces an allergen reaction, or a stinging insect.
Patent GB-1146554-A (GB)
Title: Nuclear reactors
Inventor: DOWNS TERRY
IPC: H01J47/02
Filed: 1967-01-20
Abstract: 1,146,554. Reactor radiation detection systems. ENGLISH ELECTRIC CO. Ltd. 17 Jan., 1968 [20 Jan., 1967], No. 3187/67. Heading G6C. A pulse-type ionization chamber 10 for measuring radiation in a reactor and comprising a collector electrode 12, negative polarizing electrode 13, positive polarizing electrode 14 and earthed casing 11, is connected to measuring instrument 18, polarizing supply 21 and monitoring unit 22 through three triaxial cables 17, 19, 20. Collector electrode 12 is connected to the instrument 18 through the core of cable 17; negative polarizing electrode 13 is connected to the negative pole of supply 21 and to the unit 22 through the cores of cables 19, 20; positive polarizing electrode 14 and guard-ring electrode 16 are connected to the positive pole of supply 21 through the intermediate conductors of cables 17, 19, 20. The outer cable sheaths are earthed. The unit 21 includes a filter circuit (not shown) for removal of noise pulses due to a pulse breakdown in the cable 19.
Patent GB-612524-A (GB)
Title: Temperature controlled crystal holder
IPC: H03H9/08
Filed: 1946-02-01
Abstract: 612,524. Constant temperature enclosures. STANDARD TELEPHONES & CABLES, Ltd. Feb. 1, 1946, No. 3266. Convention date, Feb. 9, 1945. [Class 64(ii)] [Also in Group XXXVII] A temperature - controlled enclosed holder for piezo-electric crystals comprising a thermally insulated chamber, a crystal mounting in the chamber, an electric heater for the chamber, automatic control means for the heater, including a thermostat in the chamber, and means for reducing overheating in the chamber is characterized in that a supplementary heating element connected to said heater for simultaneous operation is located close to the thermostat in position for direct heat transfer thereto. The crystals 9 are mounted by supports 8 on the base 7 of insulating material, formed with a step to receive the inner chamber 10 of heat - insulating material. A heat conductive chamber member 11 is slightly spaced from the walls of chamber 10 and is extended to provide an upper chamber for the thermostat 13 which is of usual construction with terminals 16, contact arm 19 with contact 20, and a co-operating bimetallic strip 21 with adjusting -screw 23<1>. A resistance wire 28 threaded through supports 29 of the thermostat is connected in series with the heater winding 25 on the conductive chamber 11. The device is enclosed by a casing 3 of insulating material, connections being brought out to pins 5 for insertion in terminal sockets. The opening of the thermostat contacts is accelerated by the supplementary heating provided by wire 28, compensating for the time lag required for the transmission of the heat by conduction alone.
Patent GB-784872-A (GB)
Title: Improvements in transducers for magnetic reproducing and/or recording apparatus
IPC: G11B23/50
Filed: 1955-02-04
Abstract: 784,872. Magnetic recording and/or reproducing transducers. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 4, 1955 [Feb. 9, 1954], No. 3341/55. Class 40 (2). A magnetic recording and/or reproducing apparatus transducer comprises a mounting 10 in which is secured a winding 20 and to which is so pivotally attached a magnetic core 14, 15 that it is movable to a limited extent through the winding 20, resilient means arranged to urge the core in one direction relative to the mounting, and means for adjusting the position of the core relative to that of its mounting by moving in the opposite direction against the urging of the resilient means or permitting movement by the resilient means in the one direction. As shown, the resilient means comprises a compression spring 19 and the adjusting means comprises a screw-threaded cam-rod 18 whose tip 18a coacts with a stud 17 carried by the core to rock the core about its pivot pin 13. The mounting is of plastic material, carries leads 21 from winding terminals 22, has slotted ears 11 by which it may be adjustably secured in position, and has its centre line offset from the air gap 16 of the core so that by shifting the entire assembly by 180 degrees about its vertical centre line there is obtained a recording and/or reproducing time shift. The core pole tips may be honed on a magnetic drum with which the core is to operate, to provide a concave surface which corresponds with that of the drum, and proceedures for setting the gap between the transducr and the drum are described.
Patent GB-1028268-A (GB)
Title: Improvements in or relating to composite guide tubes for nuclear reactors
Inventor: ALFILLE LUCIEN
IPC: F16L13/04
Filed: 1963-01-28
Abstract: 1,028,268. Tube Joints; composite tubes. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 28, 1963 [Jan. 31, 1962], No. 3420/63. Headings F2G and F2P. [Also in Division G6] A composite guide tube for a nuclear reactor (Fig. 1, not shown) is made by causing powder 2 to adhere to the external surface of an inner tube 1, of sintered Mg or Al, for example, and then compressing the powder to a predetermined value and holding it in position by means of an envelope tube 3, of Mg containing 0.6% by weight Zr, for example. The annular space between the inner tube and the envelope tube may be filled with the powder by vibration, following which the envelope tube is narrowed by means of a drawing operation to compress the powder to the desired value. Alternatively, the powder may be mixed with a binding agent such as camphor dissolved in acetone and projected on to the inner tube by means of a spray gun. The inner tube is then placed in a drying oven and the camphor sublimated, after which the tube bearing the powder is fitted inside the envelope tube and the narrowing operation effected as before. The composite guide tube which is thus obtained is subjected to at least one cycle of both internal heating at a temperture higher than the operating temperature of the nuclear reactor and external cooling so as to produce diametral and axial deformations which introduce a clearance between the powder and the inner tube. This clearance permits relative sliding between the inner and envelope tubes without any drawing of one tube by the other. Two such composite tubes may be joined together (Fig. 2, not shown) by providing the inner tube 1a of one guide tube with an inner screw-thread 6a which screws on to an outer screw-thread 6b on the inner tube 1b of the other guide tube. When the screw-threads 6a, 6b are screwed home, the respective envelope tubes 3a, 3b are brought flush to within a few tenths of a millimetre at 7. The tubes 3a, 3b have portions 8a, 8b of slightly reduced thickness around which a band 9 of Zr or stainless steel is wound, this being tightly applied against the tubes and either spot-welded or crimped on to itself so as to form a sleeve which prevents the powder from escaping through the annular opening 7.
Patent GB-113676-A (GB)
Title: An Apparatus for Increasing the Efficiency of Open Fires.
Inventor: EVENDEN THOMAS WILLIAM JOHN
IPC: F24B1/188
Filed: 1917-03-09
Abstract: 113,676. Evenden, T. W. J. March 9, 1917. Air-heating fittings. - For increasing the efficiency of open fire-places a tapering " tube " A, with air inlets in the bottom as indicated by dotted lines, is placed horizontally in front of the fire. Air entering by the inlets is heated by the tube and passes into the room.
Patent GB-493421-A (GB)
Title: Fuel supply means for internal combustion engines using alternatively a carburetter or gas from a generator
IPC: F02M13/08
Filed: 1938-02-04
Abstract: 493,421. Engines using alternative fuels. DAIMLER-BENZ AKT.-GES. Feb. 4, 1938, No. 3571. Convention date, Feb. 4, 1937. [Class 7 (ii)] In an engine using alternatively a carburetter for liquid fuel or gas from a generator, the carburetter 5 is arranged in a byepass 4 of the suction pipe 1 leading from the generator to the engine, and the outlet side of the byepass opens near the inlet openings of the cylinders. The byepass is of small dimensions so that only an idling speed of the engine can be obtained during operation with liquid fuel. The change-over from carburetter to gas operation is controlled by a valve 3, and during starting the carburetter draws its air supply from the gas generator and kindles it. Air is admitted to the pipe 1, past a valve 10, through a tangentially inclined passage 9 opposite the byepass. Valves 6, 8 control the quantity of mixture fed through the pipes 4, 1 and a filter 11 disposed on the generator side of the valve 8 prevents damage due to back-firing.
Patent GB-816129-A (GB)
Title: A fluid-operated chuck for machine tools incorporating a compressed air cylinder
IPC: B23B31/30
Filed: 1957-02-01
Abstract: 816,129. Chucks. BERTHOLD, L. Feb, 1, 1957 [April 6, 1956], No. 3601/57. Class 83 (3). In a fluid-operated chuck having a cylinder 1 with a piston 2, non- return valves 8, 13 are arranged adjacent the cylinder and are alternatively opened by a plunger 15 to release the pressure from the appropriate side of the piston. To actuate the piston 2, fluid, admitted at a connection 3 in a non-rotary sleeve 5, passes through a channel 7 in a rotatable member 9, attached to the cylinder 1, and displaces the plunger 15, which opens the valve 13 to release pressure from side B of the piston. It also opens the valve 8 and passes through channel 10 to submit side A of the piston to pressure. The piston is moved in the opposite direction by fluid, admitted at connection 4, which passes through annulus 11, passage 12, valve 13 and channel 14, the plunger 15 having been displaced to open the valve 8 and release the pressure from side A of the piston.
Patent GB-576355-A (GB)
Title: An improved locking device for cycles
IPC: E05B71/00
Filed: 1944-02-28
Abstract: 576,355. Cycle - locks. HIRST, A. Feb. 28, 1944, No. 3620. [Class 79 (iii)] A locking device for cycles comprises a double clip in the form of a spring or casehardened steel wire or rod of double-U shape, one of the U-shaped parts being adapted to embrace a pedal crank 11 and the seat tube 12, while the other part passes between the spokes of the rear wheel and embraces the wheel rim 13. The open mouths of the clip are enclosable by a bar 6 which is hinged to one extremity 3 of the clip, engages by means of a hook 5 and loop 8 with the middle leg 2 of the clip, and is secured to the other extremity of the clip by a padlock 10 which passes through eyes 4, 9 formed for the purpose in the clip and bar.
Patent GB-638903-A (GB)
Title: Improvements in and relating to excess voltage protective systems for electric windings
IPC: H02H9/06
Filed: 1946-02-05
Abstract: 638,903. Protective arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 5, 1946, No. 3636. Convention date, Feb. 12, 1945. [Class 38 (iv)] The.change in stress distribution in an electric device, such as a winding of a transformer or dynamo-electric machine, under impulse conditions is utilized to trigger an excess voltage protection means shunting the device. As shown in Fig. 1, a transformer winding 3 connected between a line 5 and earth is protected by a space discharge tube 7 in series with a non-linear resistor 10, the tube having an auxiliary electrode 11 which triggers the main discharge between electrodes 8, 9 upon the occurrence of an excessive voltage gradient over the portion 4 of the winding between the line 5 and a tapping 12 to which the auxiliary electrode is connected through a limiting resistor 13. The portion 4 may comprise about 10 per cent of the winding, the tap 12 being so chosen as to include between itself and the line 5 a substantial portion of a quarter of the wavelength corresponding to the resonant frequency of the winding. Fig. 2 shows one phase winding 3 of a mesh-connected transformer protected by a shunt tube 7 having external auxiliary electrodes 14, 15 capacitively connected to balanced tappings on the winding. Specification 406,166 is referred to.
Patent GB-1415983-A (GB)
Title: Water thinnable coating compositions
IPC: C09D125/14
Filed: 1973-01-24
Abstract: 1415983 Coating compositions; modified acrylic polymers DOW CHEMICAL CO 24 Jan 1973 3692/73 Headings C3B and C3P Water-thinnable coating compositions comprise (1) a water-miscible solvent, (2) a watersoluble polymer prepared by neutralizing with an acid the pendant amino groups in an aminoethylated polymer containing units of the formula wherein R 1  and R 2  are each H or C 1-4  alkyl and the average value of n ranges from 1À0 to 2À5, the polymer before aminoethylation containing at least 3 wt. per cent of pendant carboxyl groups, and (3) an epoxy resin. Numerous solvents, polymers and epoxy resins are specified. The compositions may be formed as two-component packs, one component containing polymer and solvent and the other containing epoxy resin. In examples, copolymers of methyl methacrylate, butyl acrylate, methacrylic acid (which may be replaced by acrylic acid) and styrene are aminoethylated by reaction of pendant carboxyl groups with ethylene imine or N-(2-aminoethyl)aziridine, and the products are then neutralized with formic acid or acetic acid. The water-soluble products are then formed into paints by admixture with one or more of the following ingredients: titanium dioxide, silica, chrome oxide green, an aromatic solvent (antifoaming agent), water, n-propanol, iso-propanol, propylene glycol, ethylene or propylene glycol mono-ethyl ether, dipropylene glycol monomethyl ether, the mono-isobutyl ether of mixed mono-/di-propylene glycols, and, as epoxy resin, the diglydicyl ether of Bisphenol A. The latter forms part 2 of the composition, either alone or with one or more solvents, the remaining components forming part 1, and the two parts being mixed immediately prior to use.
Patent GB-347329-A (GB)
Title: Improvements in or relating to clutch mechanism
IPC: F16D25/04
Filed: 1930-02-04
Abstract: 347,329. Variable-speed gearing; ; friction clutches. FIPPARD, A. J., Hankow, Woodcote Avenue, Wallington, Surrey, and BARNES, E. L., Mount House, Mile End, Colchester, Essex. Feb. 4, 1930, No. 3779. [Class 80 (ii).] In variable-speed transmissions of the kind employing a continuously-rotating driving-member carrying a flywheel 1 and intermittently clutched to and declutched from a driven member, the clutch comprises a cylindrical rubber or other elastic bag 6 adapted to be inflated and deflated to effect engagement and disengagement by an automatic two-way valve 5 controlling pressure-fluid. The bag 6, when distended, presses friction-faced segments 8, radially slidable on a drum 9 fixed to the driving- shaft 2, into contact with a drum 10 on the driven shaft 4. An air-compressor x, supplying a reservoir z, may be driven from the shaft 2 or otherwise, and the valve 5 automatically operated electrically, mechanically from the shaft 2, or otherwise. The valve may additionally be operable manually and by a centrifugal or other governor to limit the speed of the shaft 4. A flexible coupling, for example of the resilient-block universal type, may be interposed between the flywheel 1 and clutch-member 9.
Patent GB-841987-A (GB)
Title: Improvements in a rotor brake arrangement for a railway car truck
IPC: B61H5/00
Filed: 1956-09-07
Abstract: 841,987. Disc brakes. AMERICAN STEEL FOUNDRIES. Sept. 7, 1956 [Sept. 8, 1955], No. 3783/57. Divided out of 841,986. Class 103(1). In a disc brake arrangement for railway vehicles in which the radially-extending surfaces 20 of the disc rotatable with the wheel assembly are engaged by brake heads 78, pivotally mounted as disclosed in Specification 841,986, and actuated into the engaged position by a fluid-pressure piston and cylinder arrangement 66 mounted between opposed levers 30 fulcnuned to the vehicle frame at 32, the release mechanism for the brake comprises a rod 106 pivotally connected at 102 to one brake lever and projecting through and beyond an abutment 108 fixed to the other brake lever; the rod 106 being operatively engaged by a spring 110 which engages the latter brake lever to urge the rod and the brake lever connected thereto in one direction and simultaneously to urge the other brake lever in the opposite direction.