baber/WOPTO huggingface dataset:
Patent GB-1101544-A (GB)
Title: Method of detecting leaks
Inventor: GRUNDY DEREK GEORGE RITCHIE
IPC: G01M3/00
Filed: 1966-06-15
Abstract: 1,101,544. Detecting leaks. AIR REDUCTION CO. Inc. June 15, 1966, No. 26703/66. Heading G1S. A method for determining the existence and location of a leak between an enclosed path 3 and an adjacent enclosed volume 2, for use with a stream moving in the enclosed path, the temperature along the path decreasing in the direction of flow of the stream; which method comprises the steps of:- introducing into the stream condensible, traceable materials having different known freezing points; providing a stream in the enclosed volume 2; and analyzing the stream in the enclosed volume 2 for traces of the tracer materials. The tracer materials may comprise hydrocarbons containing fluorine, other hydrocarbons, nitrous oxide or sulphur dioxide. The position of the leak is determined as a function of the temperature gradient i.e. the position of the leak is determined by the particular condensate which is found in the enclosed volume. Two or more tracer materials may be introduced at intervals or simultaneously. The invention is applicable to the location of leaks in a heat exchanger.
Patent GB-1470655-A (GB)
Title: Ink formulation
IPC: C09D11/02
Filed: 1973-06-05
Abstract: 1470655 Intaglio plate printing ink BRADBURY WILKINSON & CO Ltd 17 May 1974 [5 June 1973] 26709/73 Heading C4A [Also in Division C3] An ink formulation suitable for intaglio plate printing of security papers and becoming permanently infusible after printing, comprising from 25 to 82% by weight, based on the ink formulation, of pigment and extender, and from 18 to 75% by weight, based on the ink formulation, of an oxidizable varnish containing a wax component, if necessary a wax viscosity modifier, and an oxidizable component which is an oil and/or a resin, the wax component, together with the wax viscosity modifier if present, forming a solid solution with the oxidizable component at ambient temperature and a homogeneous composition at the melting point of the varnish as well as at a temperature at least as high as the melting point of the ink formulation. The oxidizable component may be an alkyd resin, linseed oil or tung oil. Suitable alkyd resins are derived from soya oil and pentaerythritol or linseed oil and phthalic anhydride. The wax visicosity modifier may be a solid fusible resin compatible with the wax component, e.g. a hydrocarbon resin derived from petrochemicals. Driers may also be present, e.g. cobalt naphthenate and cobalt octoate. Suitable waxes are earnauba wax, paraffin wax, a polyvinyl ether of octa-decyl alcohol and hydrogenated castor oil.
Patent GB-810353-A (GB)
Title: Improvements in and relating to radar monitors
Inventor: WHITFIELD HAROLD RAYMOND
IPC: G01S7/40
Filed: 1957-08-31
Abstract: 810,353. Radar. KELVIN & HUGHES Ltd. Aug. 28, 1957 [Aug. 31, 1956], No. 26748/56. Drawings to Specification. Class 40 (7). A radar monitor comprises a gas-filled discharge device arranged to receive part of the electromagnetic radiation from the transmitter aerial and means to indicate changes in current through the device. The radiation may be focused on the space between the electrodes of the discharge device by means of a parabolic reflector and changes in current passing through the device, caused by changes in the degree of ionization due to changes in the intensity of the radiation, may be passed to a video amplifier and a p.p.i. display or to a video amplifier, integrator and meter.
Patent GB-154057-A (GB)
Title: A new or improved fertilizer and insecticide
IPC: C05D11/00
Filed: 1919-10-31
Abstract: 154,057. Baker, W. B., and Shepherd, M. C. Oct. 31, 1919. Manures.-A fertilizer and insecticide is obtained by mixing thoroughly 56 parts of finely ground North Somersetshire granite dust with 21 parts of charcoal or soot, and 25 parts of freshlyslaked lime containing a minimum amount of moisture.
Patent GB-1433147-A (GB)
Title: Multistage combustion process for internal combustion engines
IPC: F02B19/12
Filed: 1973-06-05
Abstract: 1433147 I C engines systems of working DAIMLER-BENZ AG 5 June 1973 [6 June 1972] 26801/73 Heading F1B Multi-stage combustion process for an I.C. engine having an air-cell and a pre-combustion chamber opening into a variable volume principal combustion chamber, the fuel being first burnt with a deficiency of air in the pre-combustion chamber, combustion then being completed only in the principal combustion chamber, combustion of part of the fuel being delayed by keeping the volume of the air-cell free from fuel. A reciprocating piston engine 1 has an exhaust valve 4 and inlet valve, (not shown) and may include an exhaust gas driven turbo-charger 17, 18. A pre-combustion chamber 8 has a fuel injector 14 and an ignition plug 15. Air-cell 9 is connected by duct 11 to principal combustion chamber 7. The relative positions of chamber 8 and cell 9 are such that gases leaving chamber 8 are directed away from the mouth of duct 11. During the compression stroke, fresh gas is forced into both chamber 8 and cell 9 and towards the end of this stroke the fuel/ air mixture in chamber 8 is ignited and partially burnt fuel is ejected to the principal combustion chamber. As the pressure in the cylinder falls, during the expansion stroke, air from cell 9 enters the principal combustion chamber 7 to prolong combustion. The maximum temperature in chamber 7 is low so that formation of nitrogen oxides is minimized. In a first modification chamber 8 is inside chamber 9 and piston-controlled ports in the cylinder wall regulate flow to and from the cylinder. In a second modification, air-flow is through piston-controlled ports and chamber 9 is spherical and has a tangential outlet. In a third modification the cell 9 is formed in the piston crown. When the air-cell is mounted outside the cylinder a valve may be provided in the duct 11. Fig 8 shows a valve having an opening 430 leading to chamber 7 and an opening 431 leading to the air-cell. A ball 427 of magnetizable material is spring-loaded away from a seat 433 in a magnet 434. The ball closes against the spring after an initial increase in pressure due to combustion in chamber 7 and is held closed by the magnet until the pressure in chamber 7 is appreciably below that in cell 9, so that the completion of combustion is delayed.
Patent GB-1056408-A (GB)
Title: Process for the manufacture of sodium tripoly-phosphate hexahydrate
IPC: C01B25/41
Filed: 1965-06-24
Abstract: Sodium tripolyphosphate hexahydrate is prepared by spraying water in a fine mist on to Form I and/or Form II anhydrous sodium tripolyphosphate which is preferably in powdered form and is kept in motion, the water having a temperature of 0 DEG  to 60 DEG  C. (preferably 5 DEG  to 15 DEG  C.) and being used in an excess proportion related to the quantity theoretically necessary for hexahydrate formation, evaporating the excess water by causing a stream of gas, e.g. air to flow over the water sprayed sodium tripolyphosphate while the water is being sprayed which is maintained at a temperature of 50-80 DEG  C. (preferably 60-70 DEG  C.). The excess proportion of water and the gas stream are adapted so that the latent heat of evaporation of the water maintains the temperature of the tripolyphosphate at the desired temperature the excess of water being up to 30% (preferably 10 to 25%).  The reaction velocity may be varied by varying the ratio of Form I and Form II tripolyphosphates in the starting material the reaction velocity being increased by increasing the proportion of Form I. The sodium tripolyphosphate may be agitated in a rotary tube or a fluidized bed and a product of a determined apparent density may be produced by using sodium tripolyphosphate as a starting material which has an apparent density approaching that required for the final product. The starting material may be in the form of hollow beads and the water sprayed sodium tripolyphosphate is agitated for a period sufficient to ensure complete hydration and subsequently sacked and stored.
Patent GB-170014-A (GB)
Title: Improvements in and relating to manometers
IPC: A61B5/023
Filed: 1921-10-10
Abstract: 170,014. Baum Co., Inc., W. A., (Assignees of Baum, W. A.). Oct. 8, 1920, [Convention date]. Sphygmometers.- A manometer comprises a pressure chamber and connected measuring tube, the latter being provided with damping means for permitting flow of air in and out of the tube above the measuring liquid, thus giving a steady reading. The form de. scribed is adapted for use as a sphygmomanometer. The chamber 2 and connected tube 1 are made of glass and contain mercury. The chamber is fitted with a porous plug 3 made of silica which is fused to the glass while the end of the tube 1 is covered with a piece of barometer kid 7 secured by a perforated screw cap 8. The kid allows air to pass through slowly. The apparatus is mounted on a plate attached inside the cover of a box adapted to receive also the pneumatic bandage pump, and connecting tubes. The plate also carries a calibrated scale for the tube 1. Stops are arranged so that when the box is - opened the cover is held perpendicularly to the base. In use, the bandage is placed around the upper arm and connected to the chamber 2 and to an air pump. The admission of air to the bandage tends to shut off the flow of blood in the brachial artery, a stethoscope adjusted over the brachial artery at the elbow serving as means for determining when the systolic or diastolic blood pressure is balanced.
Patent GB-277188-A (GB)
Title: Improvements in devices for marking lines upon road surfaces
IPC: E01F9/06
Filed: 1926-10-27
Abstract: 277,188. Dawson, E. Oct. 27, 1926. Surface markings.-A spiked plate for insertion in a road surface to mark lines or signs for traffic guidance, comprises a rectangular head 4 of lightcoloured metal with one or more integral spikes 3, 10, the wearing surface being roughened by corrugations or by projections 5 and intermediate recesses 6. The spikes are preferably grooved or jagged to anchor with the road material.
Patent GB-393822-A (GB)
Title: Radio-electric musical instrument with keyboard and thermionic valves
IPC: G10H1/32
Filed: 1932-09-29
Abstract: 393,822. Electromagnetic switches. COUPLEUX, E. E., 24, Rue Esquermoise, Lille, Nord, and GIVELET, J. A. M. V. de P., 24, Rue Bois-de-Vent, Paris, both in France. Sept. 29, 1932, No. 27085. Convention date, Oct. 27, 1931. Addition to 359,967. [Class 38 (v).] The musical instrument of the parent Specification comprising oscillating thermionic valve circuits with means for suppressing interference beats, is modified by the provision of a gravityreturn switch (which switch is a modification of the switch described in Specification 393,821), consisting of wires 1, as shown in the Figure, Fig. 1, normally resting on conducting bridge 3 to short-circuit a coil, e.g. in the grid circuit of a valve, the wires being lifted by an insulating wedge 3<1> on the pivoted armature 2 when the electromagnet 4 is energized by a key. Specification 378,070, [Group XXXVIII], is also referred to.
Patent GB-665953-A (GB)
Title: Arrangement for regulating the speed of asynchronous three-phase motors
IPC: H02P25/18
Filed: 1949-10-21
Abstract: 665,953. Automatic speed control systems. HUWYLER, A. Oct. 21, 1949 [May 5, 1949], No. 27111/49. Class 38 (iv). The speed of a threephase asynchronous motor 1 is controlled by interrupting the supply circuit by relays 3, 4, controlled by a contact 7, the opening of which is dependent on motor speed.
Patent GB-695976-A (GB)
Title: Weighing machines
IPC: G01G1/00
Filed: 1950-11-07
Abstract: 695,976. Spring balances. HARPER & CO.; Ltd., J., and CROWLEY, C. Nov. 1, 1951 [Nov. 7, 1950], No. 27135/50. Class 143 In Fig. 1 the scale pan 22 of a domestic weighing machine is supported by a stem 20 located by knife-edge 25x at one end of a cantilever spring 13. Stem 20, which is maintained upright by pivoted link 17 and by a keeper 27 attached to spring 13, moves in a vertical direction upon application of load to operate, through a link 42 and a slotted cam 47, a pointer 28 over a scale 36 which is visible through a window 41. Pointer 28 is pivoted at 30 on a bracket 31 and provided with a counterweight 29. Cam 47. is so shaped that the scale is linear. The positions of link 42, bracket 31 and scale 36 are adjustable by screws 43, 32 and 40 respectively. In a modification for heavier loads an additional pivoted link 48 is provided, knife-edge 25<SP>x</SP> and keeper 27 being dispensed with.
Patent GB-1285428-A (GB)
Title: Ship construction
IPC: B63B35/08
Filed: 1971-04-19
Abstract: 1285428 Ships AKERS MEK VERKSTED AS 19 April 1971 [20 March 1970] 27220/71 Headings B7A, B7M A ship constructed to carry bulk cargoes through ice fields has a main hull portion 1 adapted to remain submerged, and a pair of longitudinally spaced superstructure members 2 (2<SP>1</SP>) which remain above the surface and which are connected to portion 1 by waisted portions 8. The main hull has a double skin 9i, 9y housing ballast tanks 9 which are used to adjust draft, trim and list.
Patent GB-1527387-A (GB)
Title: Microfilm camera with device for spraying the exposed fil
IPC: G03B17/50
Filed: 1976-06-30
Abstract: 1527387 Self-processing cameras MICROBOX DR WELP GmbH & CO 30 June 1976 [4 July 1975 15 April 1976] 27271/76 Headings G2A and G2X [Also in Division F1] A self-processing microfilm camera has a device for spraying processing liquid under pressure on to exposed film; at least one pump sucks the processing liquid e.g. developer, fixer or water, from an unpressurized container and delivers the liquid under the desired pressure to a spray assembly. The pumps used are differential pressure membrane pumps and can include heaters for warming the processing liquids. One pump may be provided for each of the liquids. The camera is particularly useful for making aperture cards.
Patent GB-254936-A (GB)
Title: Improvements in counter-balancing apparatus for shutters, blinds, doors and the like
IPC: E06B9/60
Filed: 1925-10-30
Abstract: 254,936. Gibson & Co., Ltd., A. L., (Kinnear Manufacturing Co.). Oct. 30, 1925. Roller-blinds.-Counterbalancing apparatus for blinds &c. is situated outside the winding-drum in a fixed casing such as 5. The helical counterbalancing springs 9 are mounted on spindles 8 and are fixed at their free ends to pinions 16 engaging pinions fixed on the axle 6 which is keyed to the drum. The springs are adjustably secured at their other ends by means of collars keyed to the spindles 8 and plates 12 on the spindles secured by one of several eyes to a projection 14 on the fixed casing. In a modification reduction gearing may be employed outside the fixed casing between the springs and the winding drum. The power for winding the drum is applied through the shaft 20 and gearing 19, 18. The supports 7 and 7b have guiding flanges for the blind &c.
Patent GB-1073356-A (GB)
Title: Cold pilger rolling mill
IPC: B21B21/02
Filed: 1964-07-02
Abstract: 1,073,356. Rolling. MANNESMANNMEER A.G. July 2, 1964 [July 2, 1963], No. 27391/64. Heading B3M. A cold pilger rolling mill for tube rolling comprises a reciprocating stand with power and inertia force balancing, and an exchangeable ring pass whose working length extends over more than 220 degrees. The ring pass is divided radially into two halves which are detachably held together.
Patent GB-280030-A (GB)
Title: Improved machine for use in cutting the pile of weft pile fabrics
IPC: D06C13/08
Filed: 1926-11-02
Abstract: 280,030. Roger. A., Fletcher, J., and Fletcher, W. Nov. 2, 1926. Pile, cutting.-In a machine in which the fabric g passes from one drum to another a during the cutting of one row of pile and is returned ready for the cutting of another row, the cloth tension is controlled by a rope or other flexible member n which winds on and off pulleys m fixed on the drum shafts and supports a weighted jockey pulley s. The pulleys m may be of the fusee type. The ends of the fabric g may be secured to bars. t connected by bands u to the drums a. Normally a bar t depresses a lever v to close an electric circuit 1, 2, but frees the lever to stop the machine, when all the fabric has been wound off either drum a. As shown the drums, a are driven by gearing e, but according to the Provisional Specification the member n drives the drums a.
Patent GB-844646-A (GB)
Title: Electrical switch of the snap action type
Inventor: BELOPAVLOVICH PETER
IPC: H01H13/36
Filed: 1957-08-30
Abstract: 844,646. Press-button retractive switches. ELECTRO-SNAP SWITCH & MFG. CO. Aug. 30, 1957, No. 27423/57. Class 38 (5). A retractive switch having snap action comprises an insulating casing with a cavity 15 across which a terminal member 25 extends to carry a trifurcated blade spring having side members 32 and bowed tongues 34 and 35 located in relatively displaced notches in the member 25. A contact 33 on one end of the spring is thus held into engagement with the upper of a pair of fixed contacts 23 mounted on terminal stops 20 which have extensions 21 projecting into recesses in the casing and its cover 16. Depression of plunger 26 overcentres the side members 32 with respect to tongue 34, snapping contact 33 into engagement with the lower fixed contact 23, and compresses reset tongue 35 such that on removal of pressure on plunger 26 the switch reverts to the condition shown in Fig. 1.
Patent GB-732567-A (GB)
Title: Improvements in or relating to thermionic valve amplifying circuits
Inventor: DODD GEORGE ALEXANDER
IPC: H03F1/54
Filed: 1952-10-31
Abstract: 732,567. Valve amplifying circuits. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Oct. 5, 1953 [Oct. 31, 1952], No. 27478/52. Class 40 (6). In a wide-band amplifier comprising a pair of valves V1, V2 with inputs and outputs connected in parallel, the outputs being connected together at the succeeding stage; non- linear, e.g. rectifier elements W1, W2 respectively are connected in the grid leads and the biasing arrangements are such that in the event of a short circuit between grid and cathode of one of the valves, the associated non- linear element becomes of high impedance, so that the input to the other valve is still effective. The valves are provided with individual bias resistors R5, R6 respectively and also with two resistors R1, R4 common to both cathode circuits, grid leaks R2, R3 being of high value and returned to the negative line, while the secondary of the input transformer T1 is returned to the common point of resistors R1, R4. In normal operation the elements W1, W2 are biased to be conductive by the potential drop across resistor R1 ; a grid-tocathode short in either valve, however, produces a bias of reverse sign across the corresponding element W1 or W2, since the bias in question is then obtained from resistor R4.
Patent GB-1018855-A (GB)
Title: Mounting and dismounting means for agricultural machines
IPC: A01D41/16
Filed: 1964-07-03
Abstract: 1,018,855. Combine harvesters. DEERE & CO. July 3, 1964 [July 15, 1963], No. 27536/64. Heading A1F. A combine harvester has a detachable header part 42 arranged to be secured to the elevator housing 26 by means of projections 92 on a cross-beam 78 of the housing engaging recesses in a cross-beam 60 of the head. A lower beam 84 on the housing is fixed to a lower beam 68 on the header by bolts. The drive for the cutter bar, reel and feed auger of the header is taken from a driver shaft 102 through a connection 100 and driving shaft 98. The elevator and header assembly is mounted to be pivotable by means of rams.
Patent GB-924283-A (GB)
Title: Improvements in or relating to clutches for automobile vehicles
IPC: B60K23/02
Filed: 1961-07-28
Abstract: 924,283. Clutch control. E. UHER. July 28, 1961 [July 29, 1960], No. 27565/61. Class 80 (2). A vehicle clutch 1 of which the elements are normally held engaged by a spring 2 is actuated by a lever 4 connected to a pedal 8 by a servocylinder 9, whose piston 10 is loaded by an overriding spring 12 and can be operated by fluid supplied at a pressure dependent upon speed, the lower end of the pedal having a lug 13 engageable with a notch 16 at the end of a spring-loaded lever 15 operable by a pushbutton 19 to lock the servo-cylinder 9 in the clutch-disengaging position and allow automatic operation in accordance with the pressure of the fluid supplied to the cylinder 9. Pedal operation may be restored by slightly depressing the pedal to release lever 15 and allow retraction of button 19. The latter is arranged to operate a valve or electric contact 22 allowing the supply of fluid to the servo-cylinder only when it is in the locked position, thereby preventing simultaneous servo and pedal operation of the clutch.
Patent GB-1175822-A (GB)
Title: Self-Propelled Monorail Vehicle
Inventor: PAGE RONALD CECIL
IPC: B61C13/04
Filed: 1966-06-21
Abstract: 1,175,822. Self-propelled monorail vehicles. COAL INDUSTRY (PATENTS) Ltd. 13 June, 1967 [21 June, 1966], No. 27719/66. Heading B7L. . A self-propelled overhead monorail vehicle is suspended from a rail 1 by two spaced carriages (one shown) each having an integral pair of arms 5 at each end and comprising a suspension roller 3 journalled on each arm (but only one roller 3 shown) and a pair of drive roller assemblies 9 pivoted at 8 to the arms 5 and including drive rollers 10 and geared hydraulic motors 12, an hydraulic ram 15 being supplied with fluid from the variable-displacement pump supplying the motors 12, so as to force the assemblies apart and urge the drive rollers 10 against the rail web 4 with force dependent on the driving torque applied to the rollers 10. The fluid supplied to the ram 15 is tapped off the manifolds supplying the motors 12, via a double non-return valve.
Patent GB-318935-A (GB)
Title: Improvements relating to the working of chamber ovens for the production of gas and coke
IPC: C10B21/10
Filed: 1929-09-12
Abstract: 318,935. Otto & Co., Ges., Dr. C. Sept. 12, 1928, [Convention date]. Drawings to Specification. Coke ovens.-In a chamber oven plant for the manufacture of gas and coke, wide variations in the demand for gas are allowed for by varying the coking time of some or all of the ovens by means of group control devices in the air, gas, and waste gas flues. With a fall in the demand for gas these controls are set to double the coking time of one or more of the groups, the controls being operated in succession, starting with those farthest from the chimney. The gas and air are supplied under pressure.