baber/WOPTO huggingface dataset:
Patent GB-704275-A (GB)
Title: Improvements in or relating to carrier-wave multiplex telephone systems
IPC: H04J1/14
Filed: 1951-09-25
Abstract: 704,275. Multiplex systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 25, 1951 [Sept. 28, 1950], No. 22396/51. Class 40 (4) The invention relates to single-sideband carrier multiplex telephone systems of the kind in which the channels are arranged in one or more groups in such a way that the intervals between the carrier frequencies of adjacent channels are approximately twice the width of a speech sideband, a signalling frequency for each channel being provided outside the corresponding speech sideband. Fig. 1 shows a group of channels in an arrangement of this type. According to the invention, a receiver for such a system first separates the signalling potentials in each group from the speech potentials in that group, and then rectifies the signalling potential in each channel and applies it as a grid-biasing potential to the control grid of a discharge tube whose anode circuit includes a winding of a relay whereby a signalling device is operated when the direct component of the anode current attains a predetermined value, the said tube serving also for amplifying the speech potential in the associated channel. As shown in Fig. 2, an incoming group of channels forming part of a super-group passes through a group bandpass filter 17, group demodulator 18, amplifier 19, and hybrid circuit 20. The individual speech sidebands are separated by channel band-pass filters 22 in parallel, and each speech sideband passes through a channel demodulator 23 to an amplifying tube 26. At frequencies within the speech sidebands the hybrid circuit 20 is arranged to be substantially balanced so that only a small potential appears across the points 37, 38. However at signalling frequencies, which are rejected by the filters 22, this balance does not hold, and the signalling potentials therefore appear across the points 37, 38 and pass to a common signal amplifier 40. A number of channel signalling filters 42 in parallel separate the signals of the different channels, and each channel signalling potential is rectified and applied to the control grid 25 of its channel amplifier 26 which is thereby cut off so that a signalling relay 29 is deenergized. In a modification, not shown, the relay 29 is normally de-energized and the rectifier 43 is reversed so that the reception of signals increases the anode current to energize the relay 29.
Patent GB-225338-A (GB)
Abstract: 225,338. Abbott, R., and Abbott, J. Oct. 23, 1923. Spouts; strainers and filters.-A device to facilitate pouring out the contents of oil drums &c. consists of a tapered spigot-shaped part 1 adapted to fit within the bung-hole and provided with a pouring lip 5, the annular bottom rim 2 having an integral tongue 4 which is bent outwardly. as shown, to check the outflow of oil &c. through the gauze filter bottom 3 of the device. The device may be left in place in the bung-hole, the bung of the drum being fitted within the spigot 1 to effect a closure.
Patent GB-359564-A (GB)
Title: Improvements in or relating to submarine electric signalling cables
IPC: H01B7/14
Filed: 1930-07-26
Abstract: 359,564. Annealing. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Buckley, O. E. ; 36, Clinton Avenue, Maplewood, New Jersey, U.S.A.) July 26, 1930, No. 22584. Convention date, Sept. 13, 1929. [Class 72.] A magnetic sheath 42 on an electric cable is annealed at a temperature of 600- 900 C. by an electric current which is impressed by rollers 41, 41<1> upon the sheath as the cable is fed forward. The annealing temperature may be controlled by an adjustable resistance 43.
Patent GB-462155-A (GB)
Title: Improvements in or relating to grips for handles of golf clubs, cricket bats, tennis rackets or other shaft-like bodies
IPC: A63B53/14
Filed: 1936-08-17
Abstract: 462,155. Hand-grips for ballstriking implements. FLETCHER, H. L. Aug. 17, 1936, No. 22626. [Class 132 (ii)] A strip 1 of rubber or other suitable material beneath which there is located a length of cord or wire 6 is wound helically around the handle so that a helical ridge 2 is presented for the hands to grip. In one form the cord or wire 6 runs along the centre of and is embedded in the surface of the strip 1. In a second form the edge of the strip is turned over into a loop which encloses the cord or wire. A length of textile or other non- extensible material may be fixed to or incorporated in the strip.
Patent GB-1375655-A (GB)
IPC: G03G17/04
Filed: 1972-05-15
Abstract: 1375655 Colour electro-photography INTERNATIONAL BUSINESS MACHINES CORP 15 May 1972 [28 June 1971] 22659/72 Heading G2H In a colour electro-photography process of the kind in which a dielectric liquid suspension of photo-conductive pigment particles of more than one colour is irradiated with a light image, and migrate selectively in an electric field in dependence on the colours of the light image, the particle sizes of the differently coloured pigment particles are chosen to minimize distortion of the colour balance. Magenta particles may be used with cyan and yellow particles of smaller grain size, so that a magenta bias present when the particles are all of one size can be eliminated. Preferably the pigments are ball-milled separately for different periods of time, and their grain sizes are adjusted empirically by varying the periods of ball milling.
Patent GB-660652-A (GB)
Title: An improved manufacture of ethyl alcohol
IPC: C07C29/06
Filed: 1946-07-30
Abstract: Ethyl alcohol is prepared by contacting a low-grade hydrocarbon mixture containing 30-40 per cent by volume of ethylene, and propylene impurity, with sulphuric acid of a concentration of 95-100 per cent by weight on a hydrocarbon-free basis at 60-100 DEG  C. and a pressure of 300-500 pounds per square inch gauge to produce an acid extract containing 1.0-1.3 mols. of ethylene per mol. of H2SO4, then further contacting said extract with a higher grade substantially propylene-free hydrocarbon gas containing 60-100 per cent by volume of ethylene for 1 to 3 hours at a temperature of 80-110 DEG  C. and a pressure of 300-500 pounds per square inch gauge to produce an extract containing at least 1.4 mols. of ethylene per mol. H2SO4, and hydrolysing said extract with water to produce ethyl alcohol.  The contacting time of 1-3 hours in the second stage converts the propylene present in the extract into compounds not convertible into alcohols in the final hydrolysis, thus yielding a purer ethyl alcohol, and in addition, increases the amount of ethylene absorbed and so provides a higher yield of ethyl alcohol.  The process is adapted to the use of low-grade ethylene-containing hydrocarbon gas mixture containing from 0.1 to 5 per cent propylene.  A suitable method comprises feeding a gas mixture containing 30-40 per cent ethylene and the remainder hydrogen, methane, ethane and propylene impurity up an absorber countercurrently to a stream of 95-100 per cent sulphuric acid, a portion of the resulting extract from about midway of the absorber being circulated to the top of the absorber to counteract the corrosiveness of the fresh acid; the temperature and pressure are maintained within the respective ranges defined above. An extract containing about 1.3 mols. ethylene is led from the bottom of the absorber and conducted to a tank maintained at a pressure of 300-500 lbs./square inch gauge and, preferably, a temperature of 85-95 DEG  C.; a hydrocarbon gas containing 65-80 per cent ethylene and substantially free from propylene is continuously fed into the bottom of the tank and the subsequently enriched extract is then removed to a hydrolyzer for conversion into ethyl alcohol. In an example, an initial extract prepared as above and containing 1.3 mols ethylene per mol. H2SO4 is treated in the tank with the higher grade gas (76 per cent ethylene) for 1 hour at 80 DEG  C. and 500 lbs/square inch pressure, so yielding an extract containing 1.53 mols. ethylene per mol. H2SO4.
Patent GB-621754-A (GB)
Title: Improvements in insecticides
Filed: 1946-07-31
Abstract: An insecticidal composition comprises an alkyl 2-naphthyl ether in which the alkyl radical contains at least four carbon atoms, in admixture with a carrier therefor other than a solvent.  Solid admixture with inert materials such as clay or talc and aqueous emulsions containing a dispersing agent, e.g. polyethylene glycol condensate may be used alone or in admixture with other insecticides, fungicides or bactericides.  N-butyl, isobutyl, sec-butyl, n-amyl, isoamyl, 2-methyl-butyl, sec-amyl, hexyl, heptyl, octyl, and dodecyl 2-naphthyl ethers are specified. Specification 610,279 is referred to.
Patent GB-1128544-A (GB)
Title: A method and device for detecting the limiting pressure ratio values for stable operation in a compressor
IPC: F04D27/02
Filed: 1966-05-23
Abstract: 1,128,544. Axial-flow compressors. BATTELLE MEMORIAL INSTITUTE, May 23, 1966 [May 28, 1965] No. 22801/66, Heading F1C. The limiting operating conditions at which an axial-flow compressor stalls or surges are ascertained by running it at constant speed while small pulsations are imposed periodically on the pressure ratio, and progressively throttling the flow until transient instability occurs during a pulsation. The test is repeated at other speeds. The pulsations can be produced by discharging a small portion of the compressed gas to atmosphere through an auxiliary duct 8 of sectorial crosssection. A valve at the outlet of the duct 8 comprises a rotating disc 10 arranged to cover half the outlet cross-section during a major part of the rotation. During a small part of the rotation a projection 11 covers the remaining half of the cross-section, and during a subsequent small part of the rotation a notch 12 uncovers the cross-section completely. The projection 11 and notch 12 thereby produces positive and negative pulsations respectively in the discharge pressure. The duration of the positive pulsations is much shorter than the time taken for the compressor to stall completely or surge and is preferably not greater than 10 milliseconds. The compressor is progressively throttled until the onset of instability is indicated by a sudden deviation in the pressure pulsations. The pressure pulsations may alternatively be produced by cyclically connecting the discharge duct or the inlet duct of the compressor to a source of gas at high pressure and a source of gas at low pressure.
Patent GB-185321-A (GB)
Title: Improvements in clocks
IPC: G04B19/08
Filed: 1921-08-29
Abstract: 185,321. Windsor, F. E. Aug. 29, 1921. Dials and hands. - A clock 1 is provided with one hand 12 only to indicate the minutes, quarters, and hours, which are marked on two concentric circles on the dial 6 as shown in Fig. 1. The hand is balanced by means of a small ball 16 engaged in a slot 15 over which a guard 17 is mounted. The clock may be mounted as shown in Fig. 2 so as to be rotatable horizontally about a vertical pivot 3.
Patent GB-517783-A (GB)
Title: Improvements in or relating to the working cycle of internal-combustion engines
IPC: F02B1/00
Filed: 1938-08-04
Abstract: 517,783. Auxiliary exhaust valves. LANE, T. L., and CYSTER, J. Aug. 4, 1938, Nos. 23028/38 and 1551/39. [Class 7 (ii)] During the expansion stroke an exhaust valve 18 is opened for a short period, but is closed before the main exhaust valve 15 opens. Specification 28457/04, [Class 7] is referred to.
Patent GB-170690-A (GB)
Title: Improvements in screw-drivers
IPC: B25B23/00
Filed: 1920-08-05
Abstract: 170,690. Bolliger, E. Aug. 5, 1920. Fixing by self-grip sockets and tangs.-A screwdriver handle adapted to receive driving bits of different sizes is provided with a bolt mounted in an axial boring in the handle and movable against spring action to eject the bit from the handle. As shown in Fig. 2, the handle comprises a casing a provided with a tapered socket to receive the driving-bit g, and containing a bolt b provided with abutment collars c, d and a rotary head e. A spring k r.ormally presses the bolt to the back end of the casing, but by pressing forward the bolt, the bit g is ejected. The bit is prevented from rotating by a cross-pin h. In another construction, the casing a is mounted in a wooden handle and is prevented from rotating therein by two side projections on the casing engaging grooves in the handle. In this construction also, the head may be insulated from the bolt.
Patent GB-1454469-A (GB)
Title: Substituted phenylmercapto-benzimidazoles
IPC: C07D235/12
Filed: 1975-05-27
Abstract: 1454469 Substituted 5-(6)-phenylmercaptobenzimidazoles HOECHST AG 27 May 1975 [28 May 1974] 23147/75 Heading C2C Novel substituted 5-(6-) phenylmercaptobenzimidazoles of the general formula in which R 1  is an alkyl group having from 1 to 4 carbon atoms, and R is a radical of the general formula  in which R 2  is an alkyl or alkoxy group having from 1 to 4 carbon atoms, or an alkoxyalkyl or alkoxyalkoxy group having from 2 to 4 carbon atoms, in which the alkyl groups may be substituted by 1, 2, 3 or 4 halogen atoms; or R 2  is a phenyl, phenoxy, phenoxyalkyl, cyclohexyl, cyclohexyloxy or cyclohexyloxyalkyl group in which the alkyl groups have from 1 to 4 carbon atoms and in which the phenyl and cyclohexyl rings may carry one or more substituents selected from alkyl, haloalkyl, alkoxy, and haloalkoxy groups having 1 or 2 carbon atoms, and halogen atoms, or R 2  is a radical of the formula in which each of R 3  and R 4  is an alkyl group having from 1 to 4 carbon atoms or R 3  and R 4  together with the carbon atom carrying them from a cyclopentane or cyclohexane ring, or in which R is a radical of the general formula in which R 5  is a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, a cycloalkyl group having 5 or 6 carbon atoms or a phenyl group which may carry one or more substituents selected from alkyl, haloalkyl, alkoxy, and haloalkoxy groups having 1 or 2 carbon atoms and halogen atoms, are prepared by reacting a 5-(6-)phenylmercaptobenzimidazole of the formula with a halide of the formula R 2 CO.Hal or of the formula wherein Hal is chlorine or bromine. The compounds of the invention possess pharmaceutical properties.
Patent GB-598761-A (GB)
Title: Improvements in electric junction boxes
IPC: H02G3/08
Filed: 1945-09-08
Abstract: 598,761. Junction boxes. BRITISH INSULATED CALLENDER'S CABLES, Ltd., and BLADES, R. W. Sept. 8, 1945, No. 23196. [Class 38 (i)] A junction box for connecting the supply to a heating element in the form of an electric cable comprises a body 1 divided into two compartments 9, 10 by an insulating partition 8 made of heat-resistant material of low thermal conductivity. The partition 8 is formed in two sections 13, 14 fitted together to hold connectors 29 for the leads 30, 32 of the heating element 11 and a supply cable 12, respectively, and is located by strips 15 which have screwed lugs 16 for the compartment covers 2, 3. Lugs 16 are also formed on strips 19, 21 fixed to the end walls of the box. When the covers are fixed in position they overlap the partition to prevent it moving. The compartment 9 is filled with moisture-proof compound having a high melting-point and a low thermal resistivity, the arrangement being such that heat from the element 11 is dissipated by the walls of the compartment 9 to prevent damage to the insulation of the supply cable. Removable portions 37 of the box may be provided as alternative cable entries. An earthing screw 39 may also be provided.
Patent GB-1376862-A (GB)
Title: Two position pull tab container
IPC: B65D17/50
Filed: 1973-05-16
Abstract: 1376862 Easy-open cans; stoppers &c. AMERICAN CAN CO 16 May 1973 [10 July 1972] 23226/73 Headings B8D and B8T A membrane 31, which'is bonded to the underside of a can body or end panel to seal a pouring aperture 40 therein, is cut along the edge of the aperture rim 42 on removal of a replaceable resilient plastics pull tab 20 comprising a plug portion 22, which has a base wall 26 bonded to the membrane, a flange 52 spaced above the aperture rim, and a tapered side wall 24 adapted to sealingly engage the aperture rim on replacement of the plug portion into the aperture with the underside of the plug base wall located below the plane of the panel undersurface. The aperture rim is raised, Figs. 3 and 4 (not shown), and preferably shaped to present an inwardly and downwardly directed edge 44, the bottom corner of which presents a membrane-cutting edge and the top comer of which engages the plug portion as replacement thereof. The pull tab is provided with a second similarlyshaped replaceable plug portion 32 secured to a membrane 36 sealing a smaller vent opening 46. The can end may be of metal, plastics or laminates thereof. The pull tab is injection-moulded of polyethylene, polypropylene, polyurethane, phenoxy, vinyl-modified polyurethane, or a copolymer of ethylene and acrylic acid, and provided with projections 29, 29<SP>1</SP>, Fig. 1 (not shown), to prevent bonding of the tub to the can end when the former is heat-sealed to the membranes. The membranes may be of aluminium or thermoplastics foil or laminates thereof, and bonded to the panel by thermoplastics, thermosetting, or pressure sensitive adhesives.
Patent GB-918888-A (GB)
Title: Improvements in or relating to remote control-systems
IPC: B61L7/08
Filed: 1961-06-27
Abstract: 918,888. Radio-frequency railway signalling.. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 27, 1961 [June 30, 1960], No. 23242/61. Class 40 (1). [Also in Group XXX] In a railway signalling control system control signals are transmitted from a main station to a substation by means of a first radio carrier frequency, and in the reverse direction by a second carrier frequency. In the basic system, closure of switch BC at the main station CP causes oscillator GC to change frequency from (f+d) to (f-d). This acts as a command to change the semaphore arm at the substation BP from red to green, and is transmitted on the first carrier frequency. At BP the signal is detected at DF and operates relay BR which controls the semaphore. The signal is also mixed at M with a signal from an oscillator GB which produces frequency (f b +d) when the arm is at red-TC open-and (f t  - d) when the arm is at green-TC closed. As the response of the arm is not instantaneous M sends back to CP (f+fb) on a second carrier, indicating that the command has been received but not executed. When the arm goes to green the signal sent back is (f+f b  - 2d). A frequency detector FD and indicator JD analyze the signal from the sub-station and thereby show whether or not the command has been executed. If switch BC is now opened, frequency (f+fb) is received by CP, followed by (f+fb+2d) to indicate that the arm is now at red. A multiplexing system is described, Figs. 2 and 3 (neither shown), whereby a number of sub-stations are controlled by a set of switches at the main station. If different frequency channels are used transmission to the several stations can take place simultaneously.
Patent GB-1222954-A (GB)
Title: Improvements in and relating to ball joints
Inventor: DICKINSON RONALD SIDNEY
IPC: F16C11/06
Filed: 1967-05-19
Abstract: 1,222,954. Ball joint. ARMSTRONG PATENTS CO. Ltd. 5 April, 1968 [19 May, 1967], No. 23277/67. Heading E2F. A ball joint comprises a pair of complementary housing parts 10, 12 each provided with a recess for receiving a bearing cup 18, 20 of a plastics material, said cup each having a partspherical interior surface 19, 21 co-operating to define a socket for a ball 22 of the joint, wherein interposed between one surface of one of the bearing cups (20) and the adjoining part of the housing 23 is a yielding and deformable annular seat member 24, said surface of one of the bearing cups being chamfered 29 to cooperate with said adjoining part of the housing to define an annular space tapering in a radially inward direction of the joint, said annular space serving to accommodate the seat member. The annular seat member may be of rubber or plastics material.
Patent GB-373019-A (GB)
Title: Improvements in or relating to rotary electric switches
IPC: H01H21/18
Filed: 1931-08-19
Abstract: 373,019. Mechanical switches without quick action. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. Aug. 19, 1931, No. 23322. Convention date, Sept. 1, 1930. [Class 38 (v).] The handle g and contact-carrying spindle h of a rotary switch are moulded integrally of synthetic resin, and a bridging-contact o having contact surfaces p is incorporated during the moulding process. The lower end of the spindle h has a bearing in an insulating base c which carries the fixed contactsprings f, while the upper end of the spindle is carried by the lid k and is held in position by a washer m and spring ring n. The lid is held in position by a spring r having outwardly bent parts which engage coincident slots in the lid and the casing a, which has an insulating lining b.
Patent GB-1502926-A (GB)
Title: Method of and apparatus for heating a gas
IPC: B01J8/18
Filed: 1975-05-28
Abstract: 1502926 Thermal regenerators COAL INDUSTRY (PATENTS) Ltd 14 April 1976 [28 May 1975] 23356/75 Heading F4K A gas heating method comprises burning a fuel in a first fluidized bed 8 to heat said bed, circulating heat-conducting material (e.g. the particulate bed material) between the bed 8 and another fluidized bed 46 through which said gas is passed and thereby heated. Apparatus shown for carrying out the method comprises a casing 2 subdivided internally by walls 22, 42 into zones 4, 20, 40 each containing a fluidized bed. In use, bed material is recirculated through all the beds via ports 32, 34, 52 and 54 in the walls 22, 42. 26 is an additional bed for burning any residual fuel carried over from bed 8. Combustion gases from zones 4 and 20 are exhausted at 60. 6 is a gas-permeable grid separating the beds from plenum chambers 16, 28 and 48. Fluidizing gas, e.g. air for the beds 8 and 26 enters the respective plenum chambers 16 and 28 at 18 and 30, and fluidizing gas for the bed 46 (comprising the gas to be heated in said bed) enters the plenum chamber 48 at 50. Heated gas is withdrawn from zone 40 at 62. Recirculation of the bed material may be induced and varied by using different fluidizing velocities in the zones 4, 20, 40 or by using gas jets to direct the flow of bed material. The combustion gases from zones 4 and 20 may after filtering be mixed with the heated gas from zone 40. Heat pipes may be provided in the walls 22 and 42.
Patent GB-1427447-A (GB)
Title: Brake actuating mechanism
IPC: B60T7/04
Filed: 1974-05-24
Abstract: 1427447 Brake pedals and hand-controls; transmitting mechanism; locking CATERPILLAR TRACTOR CO 24 May 1974 [29 May 1973] 23389/74 Heading F2E A brake-actuating mechanism comprises a stationary support, a pedal-actuated lever pivotally mounted on the support, a bellcrank pivotally mounted on the support, a link pivotally connected at its respective ends to the lever and to a first arm of the bellcrank, and brake-actuating means connected to a second arm of the bellcrank, and adapted to be connected to a parking brake. As shown, pedal lever 14 is pivoted at 15 to a fixed bracket 12 to which is also pivoted at 17 a bellcrank 16. A pair of links 18 (only one shown) are pivoted at one pair of ends to lever 14 at 19, 24 and at the other pair of ends to the bellcrank 16 at 20. A brake-actuating cable assembly 21 is pivoted to the bellcrank at 22 for braking, lever 14 is moved counterclockwise to the Fig. 2 position, pivot 22 and assembly 21 being thereby raised. The pivotal connection 19, 24, is adjustable. During counterclockwise movement, a second lever 29, forming a bellcrank with lever 14, pushes a slide bar 30 approximately leftwards in opposition to the pull of a tension spring 35, and one of three notches 42 on the bar engages a tooth 41 on a pawl 37 to lock the mechanism in the brake-applied position. Unlocking may be effected by pushing on a handle 36 pivoted to the pawl to rotate the pawl counterclockwise in opposition to the pull of a second spring 39. The locking aspect is claimed in Specification 1,427,448.