baber/WOPTO huggingface dataset:
Patent GB-1026256-A (GB)
Title: Improvements in percussion tool incorporating a combustion cylinder for driving a reciprocable hammer piston
IPC: E21B6/08
Filed: 1965-03-01
Abstract: 1,026,256. Percussive tools. ATLAS COPCO A.B. March 1, 1965 [March 6, 1964], No. 8617/65. Heading B4C. A percussive tool comprises a hammer piston 33, 34, 35 driven on a working stroke by combustion gases in a chamber 29 and returned by a pressurized air in a pressure chamber 28, a manually-operable valve 58 being movable between a position in which pressure is built up in the chamber 28 to produce the full impact power of the piston and a further idle position in which the chamber is vented so that the piston does not effect its impact stroke. The compressed air is fed to the pressure chamber 28 by means of a piston 19 movable in a chamber 25 and connected to a piston 17 of an internal combustion engine. The tool bit 43 is mounted in a chuck 41 which can be rotated via a ratchet-and-pawl device 50, 51, the ratchet 51 being actuated by means of a shaft 53 which is oscillated via a crank pin 55 formed on the engine crank-shaft 7. The pawl may be disengaged from the ratchet and the latter locked against rotation by means of a member 64, 65 secured to the valve 58. In operation, the valve may be turned to a first position in which the pawl is disengaged and the air in the chamber 28 is directed, via flushing chamber 40, through a bore 44 in the tool bit. In a second position, the pawl is engaged with the ratchet to rotate the drill and the air is fed to the chamber 28 to actuate the hammer piston 33 on its return stroke. In a third position, the hammer piston is permitted to operate but the pawl is disengaged and in a fourth position the air in the chamber is allowed to build up and instead of operating the hammer piston, it may be arranged to feed any external device.
Patent GB-653500-A (GB)
Title: Improvements in or relating to gauging apparatus
IPC: G01B13/08
Filed: 1947-03-31
Abstract: 653,500. Actuation of switches. SHEFFIELD CORPORATION. March 31, 1947, No. 8622. Convention date, April 10, 1946. [Class 38(v)] [Also in Group XIX] In a gauging and select ing apparatus for sorting workpieces according to size, (see Group XIX) fluid pressure responsive elements such as Bourdor tubes 59 control adjustable electric switches in gaug ing circuits, (not shown) Each tube 59 is housed ir a gauge head 52 and carries at its free end a rigid fin ger 61 having switch-actuating lugs 62, 63: each of which registers with a slot in a rigid contact strip 73, 66 normally engaged by an associated spring blade. If the pressure acting on the tube lies outside a certain range one of the lugs engages the corresponding spring blade to open one of the switches. This range is predetermined by adjustment of the position of the switches. by knobs 72, 77 which operate spring-engaging stops 70, 76 the whole of each spring being mounted on a spring strip so as to be normally biassed to the left.
Patent GB-1147131-A (GB)
Title: Improvements relating to electro-chemical marking apparatus
Inventor: GARNETT CLIFFORD
IPC: B23H9/06
Filed: 1967-02-23
Abstract: 1,147,131. Electrolytic marking apparatus. METALETCH Ltd. Feb.23, 1968 [Feb.23, 1967], No.8742/67. Heading C7B. In an electro-chemical marking apparatus comprising a marking head having a conductive backing electrode which is adapted to be connected to one pole of an electrical supply and to pass current through an electrolyte to selected areas of a workpiece which is connected to the other pole of the supply so as to produce a mark electrolytically, e.g. by etching or plating, in the selected areas, the backing electrode is divided into a plurality of sections electrically isolated from one another, or there is provided a plurality of backing electrodes electrically isolated from one another and there is provided an electrical current supply equipment having a plurality of output leads connected respectively to each electrode section or to each electrode and means for supplying current to each of said leads sequentially, e.g. an electronic means incorporation a ring counter, the ring counter being arranged to pull in a plurality of relays sequentially, each relay completing a circuit from the current source to one of the output leads. The ring counter may be driven by a pulse generator and the circuit may include a current monitoring device to modify the dwell of the ring counter in inverse proportion to the current passing. In the form shown electrode sections 31 are each connected to a current lead 14 and are separated from the stencil 38 by a single absorbent pad 37. Adjacent the electrode faces removed from the stencil is a perforated insulating sheet 32 and a felt block 33 to which electrolyte is supplied via inlet pipe 40, and which provides an electrolyte reservoir.
Patent GB-116288-A (GB)
Title: Process of Producing Soda Cellulose, particularly Wood Cellulose.
IPC: D21C3/22
Filed: 1918-05-27
Abstract: 116,288. Aktiebolaget Cellulosa. June 1, 1917, [Convention date]. Pulp, preparation of.-In obtaining cellulose by boiling raw material such as wood with caustic soda lye, the lye is subjected during the boiling to a " contact substance " having a reducing action, such as mercury, zinc, tin, and aluminium. The boiler is given a thin coating of mercury, once every fourteen days, by filling it with 0.0001 normal HgCl2 solution. The lye used, which must be free from sulphur, contains about 60 grammes of Na2O per litre, and its strength is maintained by adding lye during the boiling operation. The temperature is from 140-170‹ C., and additional pressure may be obtained by means of compressed air. The lye may be obtained by dissolving soda from the dry distillation of waste liquor in the waste lye from a previous boiling, after it has been freed from lignin by carbonic acid. Air may be removed from the material to be treated by drenching it with water or by exhausting the boiler before admitting the lye. The used lye may be regenerated by the process described in Specification 6652/12, [Class 1 (ii), Inorganic compounds other than &c.].
Patent GB-189710-A (GB)
Title: Improvements in and relating to lids or closures for milk churns or cans
IPC: B65D55/10
Filed: 1922-03-27
Abstract: 189,710. Edwards, J. F. March 27, 1922. Fastenings for milk-can lids.-The lid d of a milk churn has a fixed projection e adapted to fit into a perforation in the mouth-ring b, and, situated diametrically opposite to it, a spring- pressed stud f sliding in a casing e<1> and adapted to enter a second perforation in the mouth-ring. The stud f has a rounded end and can be pressed back by the finger to free the lid. Further perforations to take the studs may be arranged equally spaced around the mouth of the churn.
Patent GB-363249-A (GB)
Title: A device for damping the recoil of the barrel in guns of all calibres
IPC: F41A25/02
Filed: 1931-03-23
Abstract: 363,249. Ordnance. SCHNIEDER ET CIE, 42, Rue d'Anjou, Paris. March 23, 1931, No. 8898. Convention date, June 16, 1930. [Class 92 (i).] Recoil apparatus.-A run-out control rod d of the kind having a valve e to provide strong throttting at low angles of elevation is provided with an additional valve f controlled by a spring h, which opens this valve to provide further passages d3, d<4> for liquid when the speed of run-out is reduced at high angles of elevation.
Patent GB-470286-A (GB)
Title: Improvements in and relating to wire broadcasting systems
IPC: H04B3/56
Filed: 1936-03-25
Abstract: 470,286. Distributing music. CARPENTER, R. E. H., and ECKERSLEY, P. P. March 25, 1936, No. 8944. [Class 40 (iv)] In a multi-programme carrier distribution system, the transformers coupling the main feeder to the subsidiary feeders near the transmitting end are so designed that the impedance presented by their primary windings is several times the characteristic impedance of the main feeder. The degree of mismatching is preferably progressively less for more remote subsidiary feeders and the last one may be matched to the main feeder in the ordinary way. Preferably, the condensers over which the programme currents are fed to the main feeders are smaller in the case of long feeders to reduce the difference in attenuation at the far end between the highest and lowest carrier frequencies. The invention is applicable to the distribution of carrier currents over telephone lines and over power networks and in the latter case the carrier frequency transformers T byepass the power transformers PT as shown in Fig. 2. High-frequency chokes (not shown) may be provided to keep the carrier currents out of the power transformers. When the power circuit involves a disconnecting box, a strip W, Fig. 7, of copper connected to the cable sheaths at both sides may be run in proximity to the busbars to avoid radiation and transmission trouble caused by the inductance of the partial loop formed by the bus-bars. Alternatively, or in addition, the bus-bars may be byepassed by a high-frequency circuit C7, 19, isolated from the bus-bars by chokes. A high-frequency choke LS is designed to act as a short-circuit to power currents finding their way, e.g. because of condenser breakdown into the byepath, and to act with the condensers C7 as a high-pass filter. Specification 443,366 is referred to.
Patent GB-966405-A (GB)
Title: Improvements in or relating to pressure wave transmission arrangements
Inventor: ROUND HENRY JOSEPH
IPC: G10K11/00
Filed: 1962-03-08
Abstract: 966,405. Wavecouplings; subaqueous signalling apparatus. MARCONI SOUNDING DEVICE CO. Ltd. Feb. 11, 1963 [March 8, 1962], No. 8953/62. Heading H4J. An echo-sounder or other ship-borne pressurewave transmission arrangement comprises a portion of the ship's hull 1, a plate 4 of similar thickness spaced therefrom except at its periphery where it is firmly attached to the hull, and a filling 5 of elastic material (solid or liquid) between the hull and the plate, the whole forming a dipole which is resonant at the intended pressure-wave frequency. The plate 4 may be welded or bolted at its periphery to the hull 1, with the filling 5 under a pressure of about 3-5 atmospheres in the static condition. The magnetostrictive or other transducer 3 is preferably mounted in a water-filled tank 2 inside the hull 1. Impedance matching may be improved by the addition of metal plates inside and/or outside the hull as described in Specification 958,139.
Patent GB-526891-A (GB)
Title: Improvement in variable inductance mechanisms
IPC: H03J1/10
Filed: 1939-03-21
Abstract: 526,891. Adjusting electric coupling coils. JOHNSON LABORATORIES, Inc. March 21, 1939, No. 8960. Convention date, March 21, 1938. [Class 37] [Also in Group XXXV] In a variable-inductance tuning mechanism of the kind having an iron core adjustable within an inductance coil, the movement of the core is effected by attaching both ends thereof to the ends of a tensioned cable which passes over and around a drum operated by a rotary member so that movements of the member in either direction are transmitted positively to the core. The core 17 slides in an inclined guide 13 of insulating material round which the coil 14 is wound and is connected by means of staples 18, 19 with cables 20, 21 passing over roller 23, 25 and joined together by a tensioning spring 26. Several of such cored coil units may be mounted one behind the other with the rollers 25 mounted on a common operative shaft 24 fcr joint operation. Each coil is connected to a capacitance 27 providing a resonant circuit tunable through a desired range of frequencies and the several circuits may be aligned for joint tuning by adjustment of the drums 25 on the shaft 24 and by adjustment of a coil relative to its core by means of a screw 28 abutting on the end of the coil former and pressing it against the action of a spring 29. The cores 17 are earthed by connection to a conductive strip 30 wound in spiral form round a metal rod 31 itself connected to the earthed casing, 35. The method of connecting the cables 52 carrying cores 17a so as to move the cores in opposite directions is shown in Fig. 8. A number of coils 14b, c, d may be arranged in series and traversed in turn by one core as shown in Fig. 10 so as to tune over an extended range of frequencies, the coil in use for a particular wave-band being automatically switched into the circuit by means of spring contacts 64 engaged by a cam 67 which is moved in step with the core 58 by bars 68, 78 attached to the cable 73.
Patent GB-292711-A (GB)
Title: Improvements in and relating to kinematograph picture sheets
IPC: G03D15/00
Filed: 1927-04-01
Abstract: 292,711. Sempill, W. F. Forbes- April 1, 1927. Kinematograph picture films.-Picture sheets for episcopic projection having perforations 2 by which lengths can be easily removed and joined up, are also provided with feed perforations 10 which may be arranged irregularly, or may be of any size, the roller guide means being provided with correspondingly disposed and shaped projections.
Patent GB-232943-A (GB)
Title: Improvements in the manufacture of ceramical products
Filed: 1925-04-04
Abstract: 232,943. Goldschmidt, V. M., and Krogh, J. C. W. von. April 25, 1924, [Convention date]. Making bricks; pottery materials.-Relates to the manufacture of clay products by burning or sintering at normal temperature without fusion, and consists of introducing a quantity of iron oxides into the clay so that the final product contains a percentage of oxide between the limits of 3 per cent and 20 per cent. About 1 per cent of Borax also may be added to the mixture. It is stated that the product obtained from this mixture can be varied by controlling the rate of heating in the firing process, a rapid burning producing a porous stone of the nature of pumice, while a slower burning produces a product of great solidity.
Patent GB-1032689-A (GB)
Title: Improvements in radio controlled nuclear energy propelled marine towing craft
IPC: F41G7/00
Filed: 1965-03-03
Abstract: 1,032,689. Cleaning pipes. A. P. PEDRICK. March 3, 1965, No. 9012/65. Heading F2N. [Also in Divisions B7 and G3] In a marine towing-craft comprising a pair of tubular thrust-units 10, 11 (Fig. 3, not shown), the exterior of a cylinder 42, or 43, in each unit is cleansed of salt deposits by scrapers or bars 78 (Figs. 7, 8, not shown) attached to circular bands 76 which are rotated by turbine blades 46 lodged in an annular passage 40, or 41, wherein sea water receives heat from hot fluid within the cylinder whilst flowing in an axial direction. Alternatively, the cylinder is rotated by the blades 46 whilst the bars are stationary. Hot fluid flows into and out of the cylinder through pipes 32, 34.
Patent GB-308797-A (GB)
Title: Improvements in or relating to insulators for the primary conductor of a current transformer
IPC: H01F38/30
Filed: 1929-03-20
Abstract: 308,797. Siemens - Schuckertwerke Akt.-Ges. March 28, 1928, [Convention date]. Transformers. - Relates to ring-type current transformers in which the primary winding is in the form of a straight conductor 3 passing through the ring core 1 carrying the secondary winding 2, and through an insulator both ends of which are located in air, e.g. an insulating bushing for a wall or partition, and consists in making the insulator in two parts, one having an enlargement 5 dimensioned to prevent glow discharge and an extension 6 small enough to be passed through the transformer aperture, the other part 7 also being dimensioned to prevent glow discharge and adapted to be slipped over the extension 6 and cemented thereto with the wound core of the transformer in position.
Patent GB-773313-A (GB)
Title: Improvements relating to processes for making reproductions, especially printing plates, with the application of diazo compounds
Inventor: SUS OSKAR
IPC: G03F7/022
Filed: 1952-04-09
Abstract: 2 - Diazo - naphthol - (1) sulphonic esters are made by reaction, normally in aqueous alkaline dioxane, of the sulphochlorides thereof and (Example 1) 2-piperidylmethyl-3-hydroxy-diphenylene oxide (with 4-sulphochloride); (Example 2) 4-piperidylmethyl-1-hydroxycarbazole and 1 - piperidylmethyl - 2 - hydroxycarbazole (with the 5-sulphochloride); (Example 3) 1-piperidylmethyl - 2 - hydroxyfluorene (with 4- and 5-sulphochlorides); (Example 4) 4-piperidylmethyl - 1 - hydroxynaphthalene (with the 5-sulphochloride); (Example 5) 4-dimethylaminomethyl - 1 - hydroxycarbazole and 1 - dimethylaminomethyl - 2 - hydroxycarbazole (with the 5-sulphochloride); and (Example 6) 6 - piperidylmethyl - 5 - hydroxy - 7:8 - benzoquinoline (with the 5-sulphochloride).
Patent GB-610112-A (GB)
Title: Improvements in or relating to pulse modulator circuit arrangements
IPC: H03K3/543
Filed: 1946-03-25
Abstract: 610,112. Pulse generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and COLCHESTER, C. D. March 25, 1946, No. 9175. [Class 40 (vi)] In a pulse generating circuit a capacitor C is charged during negative half-cycles of the supply through diode V3, a delay line DL being charged through an isolating diode VI during positive half-cycles. The delay line is discharged by a grid-controlled valve V2 feeding a load R during each negative half-cycle.
Patent GB-1489762-A (GB)
Title: Mechanical lipid removal from tobacco leaves
IPC: A24B3/18
Filed: 1975-03-06
Abstract: 1489762 Treating tobacco AMF INC 6 March 1975 [8 March 1974] 9281/75 Heading A2C Surface liquids are removed from tobacco leaves by non-abrasive contact with an absorbent foam or fibre surface. The process is preferably carried out on fresh leaves. In any case the moisture content must be greater than 35% by weight. In one embodiment leaves are conveyed past freely rotatable rollers having absorbent surfaces. The surfaces are cleaned by contact with chloroform.
Patent GB-622783-A (GB)
Title: Improvements in electromagnetic relays
IPC: H01H51/32
Filed: 1947-04-08
Abstract: 622,783. Electromagnetic switches. GENERAL ELECTRIC CO., Ltd., COLLYER, J. E., and ROSE, W. R. April 8, 1947, No. 9285. [Class 38(v)] In a frequency relay wherein a switch member such as a cam 24, is rotated successively through N steps by subjecting N tuned reeds such as 4, 5 to successive alternating currents of frequencies corresponding to that of the reeds, the reeds are mounted parallel to the axis of a permanent magnet 1 one pole of which is in contact with a U-shaped laminated yoke 2 provided with an operating coil 6. In the form shown N equals two and the two reeds 4, 5 act on spring pawls 13 engaging ratchet wheels 11, 12 fixed on a spindle 10 which through pinions 20, 21 drives a shaft 14 which in turn through pinions 18, 17 drives an assembly of cams 22, 23 loosely mounted on the spindle 10 and also through pinions 25, 26 drives the contactoperating cam 24. The cams 22, .23, 24 each consist of a wide portion extending over 180 degrees and a narrow portion of the same extent and the cams 22, 23 are oppositely arranged, and adapted in turn to push a pawl out of engagement with its ratchet wheel. In operation, superimposed current, of suitable frequency operates one of the reeds 4, 5 which rotates its ratchet wheel, say 11 till the cam 23 has moved through 180 degrees and pushes the pawl out of engagement. During this movement the cam 24 closes the switch contacts. Later, current of another frequency operates the other reed which is now able to drive its ratchet wheel till the cam 22 pushes its pawl away. During this movement the cam 24 opens the switch contacts. Specification 521,052 is referred to.
Patent GB-1536882-A (GB)
Title: Control of plasma arc cutting
IPC: B23K9/073
Filed: 1976-03-09
Abstract: 1536882 Plasma arc cutting INST ELEKTROSVARKI IM EO PATONA AKAD NAUK UKRAINSKOI SSR 9 March 1976 [12 March 1975 30 Oct 1975] 09287/76 Heading B3V Plasma arc cutting is controlled by supplying the plasma-forming gas to the torch at a predetermined constant flow rate, instantaneously closing the outlet nozzle of the torch, measuring the resultant pressure change in the plasma-forming gas supplied to the torch to produce a curve describing the pressure change characteristics as a function of time and subsequently controlling electrical energization of the cutting torch during initiation of cutting by supplying the electric current for the arc in two steps, the first taking the current in one jump to a value approximately equal to half the cutting value and the second gradually increasing the current in accordance with the measured pressure change characteristic up to the value of the desired cutting current. As shown, gas is supplied to a torch 1 via an adjustable throttle 3. The arc is supplied from a thyristor converter 6 with an input current regulator 7. Means 8 controlling the regulator 7, including a memory unit and a matching device, stores output signals from a pressure sensor 9. The sensor includes a sensitive element, either at the inlet to the torch gas space or at the jet orifice, and a resistance transducer. A plug is provided for blocking the jet orifice. In operation, before the arc is struck the sensor 9 and the memory unit 8 are switched on. The memory unit comprises recording and reproducing heads and a tape drive. Plasmaforming gas is fed to the torch and the orifice is shut-off abruptly and completely by the plug manually or by an electric gas valve. The subsequent rate of increase in the gas pressure is recorded on the tape which is driven to the reproducing head. The electric current is then supplied, in a first step to almost half the cutting value and the tape then controls the rate of increase in current supply up to the cutting value.
Patent GB-235528-A (GB)
Title: Improvement in door locks
IPC: E05B65/22
Filed: 1925-04-09
Abstract: 235,528. Ternstedt Manufacturing Co., (Assignees of Archer, T. P., and Heintz, E. E.). June 16, 1924, [Convention date]. Latches, sliding ; latches, preventing operation of.-The follower is locked against operation by a shoulder o engaged by an arm p on a yoke-shaped dog i which is put in and out of action by a manually-operated control device, Fig. 3, which is forced automatically to " on " or " off " position by a spring having its maximum power at a point equidistant from its end positions. The dog is actuated by a lever v pivoted on an escutcheon plate t mounted on the lock casing f by studs 10 and distance-pieces 11. A coil spring w is inserted between the escutcheon plate and the dog i so as to be compressed during the first part of the movement and to ensure completion of the movement by expansion of the spring. Specification 206,304 is referred to.
Patent GB-434280-A (GB)
Title: Improvements in or relating to carburettors for internal combustion engines
IPC: F02M1/04
Filed: 1934-03-27
Abstract: 434,280. Spray carburetters. ROGERS, W. R., and ROGERS, H. J., 20, Noble Street, Wem, Shropshire. March 27, 1934, No. 9491. [Class 7 (iii)] In a carburetter in which an auxiliary petrol inlet 3 and air inlet 5a are controlled by a single auxiliary valve 1, movement of which uncovers a mixture conduit 6, an additional valve 9 is mounted on the valve 1 and closes the air inlet 5a on further movement of the valve 1 for starting the engine. The valve 9 is mounted on a pin 8 passed through the auxiliary valve 1 and clamped therein by the engagement of a screwed nipple 12, to which a control wire 11 is attached, with the head 13 of the pin.
Patent GB-155499-A (GB)
Title: Improved carrier or means for supporting electric lamp or other shades, reflectors and the like
IPC: F21V17/06
Filed: 1920-04-06
Abstract: 155,499. Rutherford, A. P. April 6, 1920. Shade-holders.-A washer A is provided with spring members G having enlarged ends H for supporting the shade J, and has inwardly projecting parts B, C to engage with the bayonet slots E in the lamp-holder. The parts B, C are dished or concavely shaped to form a bearing for the lamp-pins F<1>.