baber/WOPTO huggingface dataset:
Patent GB-260046-A (GB)
Title: Improvements in or relating to rock drills and like tools
IPC: B25D17/08
Filed: 1925-07-22
Abstract: 260,046. Holman, J. L., and Holman, A. T. July 22, 1925. Percussive drills.-The tool chuck 15 of a rock drill or like percussive tool, such as a riveting or caulking tool, is formed with inspection openings 21, so situated as to permit examination of the end of the piston. Registering openings 23 are formed in the front cover 19 or other part of the drill.
Patent GB-187265-A (GB)
Abstract: 187,265. Jones, F., and Jones, E. May 17, 1921. Cases, watch; watches combined w i t h expanding bracelets. - In the combination of a watch and expanding bracelet, the expanding chain is contracted by a spring device housed within the watch case and operating through an inextensible flexible chain or cord which passes through some or all of the links of the expanding chain. The watch case comprises a body a<1> containing the movement and a hinged backplate c formed with a shallow recess c<2> to receive a pulley e which fits over a central post c<6>, Fig. 7, and contains a spring f one end of which is attached to the post and the other to the pulley. The top of the pulley is closed by a removable cover-plate e<1> and the whole of the recess c<2> by a removable partition plate d which is sprung into position and prevents dust from reaching the watch movement. The ends of an inextensible chain g passing through the bracelet are attached to the pulley which, under the influence of the spring, automatically winds up the chain to contract the bracelet onto the wrist. Two pairs of lugs c<4>, c<5> are provided on the watch case to which the ends of the bracelet are connected.
Patent GB-187430-A (GB)
Abstract: 187,430. Romeyn, J. Sept. 26, 1921. Starting. - Into a cylindrical part f of the exhaust pipe is driven a pistcn k, after the working cylinder a has been fully scavenged; the gases trapped by the piston are compressed so as to raise the compression pressure in the cylinder, but the rate of compression is arranged so that none of the gases is returned to the cylinder. The crank for driving the piston is adjusted for reversing, and at starting the setting may be altered to increase the compression pressure.
Patent GB-223640-A (GB)
Title: Improvements in apparatus for playing games of skill
IPC: A63F9/02
Filed: 1923-07-21
Abstract: 223,640. Padgett, G. C. July 21, 1923. Table games.-One or more dolls or other objects are arranged at one end of a board 3 carrying terminal strips 5, electrically connected to electromagnets 12, so that by completion of the circuits by means of discs or coins thrown on to the board the electromagnets are operated to cause the dolls 2 to tilt or vibrate. As shown in Fig. 4, the doll 2 is mounted on a block hinged at 6 and connected to the armature 10 of the electromagnet. A series of boards 3 may be arranged round a table, the dolls being situated at the centre of the table. The positive and negative terminal strips may be arranged in parallel or concentrically.
Patent GB-372406-A (GB)
Title: Improvements in coupling devices for the transmission of torque
IPC: F16D3/76
Filed: 1931-01-05
Abstract: 372,406. Universal joints. ROADLESS TRACTION, Ltd., Gunnersbury House, Hounslow, Middlesex, and PENN, O. S., Malew, Lower Hampton Road, Sunbury-on- Thames. Jan. 5, 1931, No. 18797. [Class 80 (ii).] A universal shaft coupling, particularly for the cardan shaft of a motor vehicle, comprises a cylindrical housing 50, which may be free, or as shown, is attached to the gear-box shaft 49, and, within the housing, one or more blocks 55 which engage the end of the other shaft and are maintained in compression by flanges 53, adjusted by bolts 54. In the floating housing form, not shown, the block engages the ends of both shafts. The surfaces with which the rubber contacts may be grooved or irregular.
Patent GB-631498-A (GB)
Title: Improvements relating to firearms
IPC: F41A9/49
Filed: 1947-07-15
Abstract: 631,498. Firearms. DANSK INDUSTRI SYNDIKAT COMPAGNIE MADSEN AKTIESELSKABET. July 15, 1947, No. 18823. Convention date, June 1, 1945. [Classes 92 (ii) and 119] A firearm has a magazine accommodating a row of projectiles and a combustion chamber for a single charge, the chamber communicating with the projectile chamber of the firearm and with the end of the magazine remote from the projectile chamber, in order to distribute the gases of the single charge to feed successively the projectiles towards the projectile chamber and to eject them through the barrel. In Fig. 1 a combustible charge in a chamber 3 is ignited by trigger-actuated mechanism, not shown, the resulting pressure serving to eject the projectiles 5 in succession from the barrel 1 and also, via conduit 6, to urge the projectiles in the magazine 4 towards the barrel chamber 2. In a modification the conduit is dispensed with, the pressure gases reaching the outer end of the magazine by passing through the rear end of the barrel and thence around the projectiles. In Figs. 3 and 5 a feeding device 13 is slidably mounted in a housing 11 fitted with a magazine 16. This device has a recess 18 adapted to convey the rounds from the magazine to a position in alignment with the barrel 1. When the feeding-device is in its extreme left-hand position, a space 14 is left in connection with the chamber 3, and it is stated that with the help of this space the device 13 will reciprocate upon the ignition of a charge in the chamber 3. In another modification, Fig. 7, the projectiles 26 and the charge 27 are located in the magazine 25. The Specification as open to inspection under Sect. 91 describes also a construction, Fig. 3 (Cancelled), in which the projectiles are fed to the firing position by a rotary magazine 8. This subject-matter does not appear in the Specification as accepted.
Patent GB-707354-A (GB)
Title: Method of forming continuous pipe
Inventor: REYNOLDS JULIAN LOUIS
IPC: B21C37/12
Filed: 1952-07-25
Abstract: 707,354. Composite pipes; wrapping pipes; laying pipes. REYNOLDS METAL CO. July 25, 1952, No. 18832/52. Class 99 (2). [Also in Group XXII] An armoured tube is made by a machine which travels along a trench where the tube is to be laid. A carriage 1 on wheels 2 carries a fixed mandrel 5 about which is wrapped by means not shown a metal &c. strip 8 from a roll 7. The edges of the web are trimmed by blades 10 and the longitudinal butt or lap is welded by means 11. A web of metal or other material 16<SP>x</SP> is wrapped helically about the tube by a rotary head 15, and shoes 19 on a rotary head 18 apply heat and pressure to smooth the wrapping or to set adhesive, melt solder, or to weld the helical joint. Impregnated paper or fabric 22x is wound helically on the tube by a rotary head 22 and a tensioned wire 23 is applied by a rotary head 24, Paint, resin or asphalt is extruded on to the pipe by a head 27 and a stiff mix of cement may be applied by an extrusion head 29. The heads are rotated in synchronism with the movement of the carriage which extracts the mandrel as the tube is formed without axial or rotary movement. The blade 10 may be replaced by flanging and crimping rolls to form a seamed joint. Square, elliptical, or other shaped tubes may be formed by passing the tube through rolls of appropriate shape or by winding on a non-circular mandrel. A coupling for a length of tube, Fig. 2, not shown, may be formed by withdrawing the mandrel and completing the winding on a short length of tubing. The tube may be formed with a helical instead of a longitudinal joint.
Patent GB-267388-A (GB)
Title: Improvements in train control systems
IPC: B61L3/02
Filed: 1925-12-09
Abstract: 267,388. Automatic Telephone Manufacturing Co., Ltd., and Hudd, A. E. Dec. 9, 1925. Drawings to Specification. Electrical systems, non-automatic; track apparatus for stopping trains.-Spaced track ramps and a timing device on the train co-operate to stop the train if it maintains an excessive speed after receiving a warning signal. Each track ramp opens the engine brake pipe line, but the line is closed at a second point whenever the ramp is positively electrified and on the first occasion when it is negatively electrified. The latter initiates the action of a timing device and if a second ramp negatively electrified is passed within a prede-bermined time interval the pipe line is not closed at the second point and the brake is consequently applied. The levers operating the semaphore signals also operate electric switches by which the polarity of the connections to the ramps are determined. The apparatus described is identical with that described in Specification 266,485. Specifications 266,605 and 266,611 also are referred to.
Patent GB-817468-A (GB)
Title: Improvements in or relating to non-contact target apparatus
Inventor: BOWLES DONALD CLIVE
IPC: F42C13/02
Filed: 1955-06-30
Abstract: 817,468. Non-contact target apparatus. RANK CINTEL Ltd. July 2, 1956 [June 30, 1955], No. 18921/65. Class 40 (3). Non-contact target apparatus generates a signal which is started and stopped by the entry and exit of a projectile from a define space around the target, which space is of triangular cross-section in the radial direction so that the duration of the signal depends on the distance from the target. (Distance measurement assumes that the projectile velocity is known.) As shown, light from around the target is reflected from a convex mirror 2 through a lens 3 on to a photo-cell 6 masked by a diaphragm 4 provided with an annular slit 5. In alternative arrangements, to obtain a greater percentage occultation of light by the projectile, the apparatus may detect two narrow zones around the projectile. This may be achieved by two annular slits in the mask (Fig. 2, not shown) or two identical systems arranged along the axis of the target. Specification 817,466 is referred
Patent GB-1025944-A (GB)
Title: Improvements in or relating to vacuum type circuit interrupter
IPC: H01H1/02
Filed: 1963-01-22
Abstract: 1,025,944. Vacuum switches. GENERAL ELECTRIC CO. Jan. 22, 1963 [Jan. 24, 1962; May 18, 1962], No. 18935/65. Divided out of 1,025,943. Heading H2B. A vacuum switch comprises an evacuated envelope constructed in part of insulating material, a pair of electrode supporting rods, a pair of electrodes having radially projecting portions to prevent arcs wandering on to the rods, and metal vapour condensing shielding surrounding the electrodes and interposed in all straight line paths leading from the arcing regions of the electrodes to the insulating material. The arcing regions of the electrodes consist substantially of a metal selected from the group consisting of aluminium, beryllium, magnesium or combinations thereof, the metal being free of gases and gas-forming contaminants to an extent specified. The arcing regions may include small amounts of other metals which act as weld inhibitors, reference being made to the use of up to 20% by weight of copper or silver.
Patent GB-146998-A (GB)
Title: Improvements in gloves and method of making same
IPC: A41D19/02
Filed: 1920-07-06
Abstract: 146,998. Hemphill Co., (Assignees of Bosworth, G. P.). Nov. 15, 1918, [Convention date]. Knitting gloves. A glove blank consists of a single longitudinal strip with the digit strips fashioned at the tips, and is shown diagrammatically in Fig. 2. The blank is preferably formed on a circular knitting-machine, and the knitting commencing at the line 1, 2 is carried along the front of the wrist portion, needles being thrown into or out of operation where necessary to fashion the wrist. A flat selvedgad strip is formed until the line 3, 4 is reached, whereupon all the needles are elevated out of action, and the needles for the thumb strip lowered to position. After the thumb strip is knitted the palm portion is knitted, followed by the tinger strips in saccession. The digit strips are fashioned by throwing- intb or out of operation the requaite number of needles, and the fashioning may be symmetrical or as shown in Fig. 9, with one side 45 longer than the other 44. The front and back of the digit strips may be knitted together at the tapered portions, and at points 47, 47<1>, Fig. 10. Uniting the mating part of the strip at 47, 47<1> aids the subsequent seaming operation. Fashioning may also take place at the base 50 of the strips, and gussets may be made with additional needles from the adjacent finger strip. Specification 161,267 is referred to.
Patent GB-868880-A (GB)
Title: ª--amino acetophenone derivatives
Filed: 1959-06-03
Abstract: The invention comprises amino-acetophenones of the formula: <FORM:0868880/IV (b)/1> and acid addition salts thereof, wherein R3 is hydrogen or an alkyl group of 1-6 carbon atoms, such as a tertiary butyl group, and their preparation by reducing a nitro compound of the formula:  <FORM:0868880/IV (b)/2> wherein R4 is hydrogen or a benzyl group and when R4 is benzyl, subsequently splitting off the group or groups by catalytic hydrogenation.  The products are used pharmaceutically, suitably as acid addition salts such as hydrohalides, sulphates, citrates, acetates or phosphates. Nitro-acetophenones used as starting materials in the above process are made by condensing 2-hydroxy (or benzyloxy)-5-nitro-O -haloacetophenone with an amine NHR3R4. Specification 809,791 is referred to.ALSO:Pharmaceutical preparations suitable for oral or parenteral administration having antivirus activity comprise an amino-acetophenone of the formula <FORM:0868880/VI/1> or an organic or inorganic acid addition salt thereof (see Group IV (b)), wherein R3 is hydrogen or an alkyl group of 1 to 6 carbon atoms, and a solid or liquid inert diluent or solvent.  The preparations suitably may contain 0.5 to 5% by weight of active compound.  Specification 809,791 is referred to.
Patent GB-662819-A (GB)
Title: Method of reducing the volume of small pieces of scrap iron
IPC: C22B1/248
Filed: 1949-07-19
Abstract: 662,819. Consolidating scrap. SAUBERLI, E. HANHART-. July 19, 1949, No. 19007/49. Class 83 (iv). Turnings, clippings and filings of iron are compacted by being heated on a hearth built of wooden laths and filled with inflammable waste; and stirred when softened to form compact masses which can be forked off.
Patent GB-958364-A (GB)
Title: Improvements in or relating to screw rotor machines
IPC: F04C28/00
Filed: 1960-05-30
Abstract: 958,364. Rotary compressors or motors. SVENSKA ROTOR MASKINER A.B. May 30, 1960 [June 4, 1959], No. 19010/60. Heading F1F. A meshing screw compressor or motor comprises a valve port in the high pressure end wall of the machine, the port permitting communication between a low pressure zone and a (chevron-shaped) working chamber which is out of communication with both the high pressure and low pressure ports, and a valve member which controls the valve port. Fig. 4 is a section through a machine at the high pressure end wall, and shows a plurality of radially slidable valves 48 which can connect the rotor bores to a low pressure chamber. When, for example, the machine acts as a compressor, selective withdrawal of the slide valves determines the point at which the working chambers are finally cut-off from the low pressure supply, thus varying the mass flow and compression ratio. The valves may be poppet valves. In Fig. 6, elongated valve ports extend tangentially of the rotor bores, and are progressively adjustable by sliders 52, 54.
Patent GB-1454524-A (GB)
Title: Method of making heat-processable photosensitive material
IPC: G03C1/498
Filed: 1973-04-19
Abstract: 1454524 Photographic heat-processable silver halide materials KODAK Ltd 19 April 1974 [19 April 1973] 19028/73 Heading G2C Heat-processable photographic materials are made by forming a photo-sensitive silver halide emulsion by precipitating silver halide grains in an aqueous dispersion medium containing two peptizing agents (i) a polyoxyethylene surfactant having a hydrocarbon hydrophobic portion and at least one polyoxyethylene group bonded thereto through a hetero atom e.g. N or O and (ii) an anionic surfactant e.g. sodium lauryl sulphate, or a polymeric peptizing agent e.g. gelatin; and mixing the dispersion so obtained, if necessary after replacing the aqueous medium with an organic solvent, with a binder solution, e.g. of polyvinyl butyral; and then mixing the emulsion with an oxidation/reduction image-forming system comprising a light-insensitive reducible metal compound e.g. silver stearate or silver behenate and a reducing agent therefor e.g. a phenol or naphthol, and coating the mixture on a support, or coating the emulsion and the oxidation/reduction image-forming system in separate layers on the same side of the support.
Patent GB-768675-A (GB)
Title: Improvements in or relating to production of hydrogen peroxide
IPC: C01B15/023
Filed: 1953-07-09
Abstract: <PICT:0768675/III/1> In the production of hydrogen peroxide from an alkyl anthraquinone by successive reduction and oxidation, a solution of an alkyl anthraquinone is partially reduced with hydrogen in a reduction zone in the presence of a particle form hydrogenation catalyst, and the partially reduced solution is passed to an oxidation tower packed with an inert solid contact mass, and is contacted with a free oxygen-bearing gas at 30-80 DEG C. and 15-300 p.s.i.a. to produce hydrogen peroxide.  Recycle 2-ethyl anthraquinone solution (8-15 per cent) in a mixture of tetralin and methyl cyclohexanol enters reduction tower 11 from pipe 10 and contacts a co-current of hydrogen entering at 13 from compressor 12.  Tower 11 contains a fixed bed of particles of palladium or platinum on alumina of size 4-100 mesh.  Reduction is effected at 30-80 DEG C. and 15-300 p.s.i.a. until 50-75 per cent conversion has occurred.  The reduced solution passes through pipe 16, cooler 17, and pressure release 18 to oxidation tower 20, which is filled with pellets or granules of silica, alumina, asbestos, or porcelain of size 10-100 mesh, and contacts a countercurrent of air, oxygen, or oxygen-enriched air entering from compressor 22 through diffuser 23.  The oxidized solution passes to recovery tower 25, and is stripped with steam entering at 26 to yield a hydrogen peroxide/water vapour mixture from 27, which is concentrated.  Alternatively, water or dilute aqueous hydrogen peroxide may be used to extract hydrogen peroxide from the oxidized solution, and extraction may be continuous in several countercurrent stages.  The stripped oxidized solution is recycled through pipe 28 and heat exchanger 29 to 10.  The gas-liquid contact in the reduction tower may alternatively be countercurrent, while in the oxidation tower, which should be liquid-flooded, and in which an aqueous hydrogen peroxide phase should be maintained, liquid/gas contact may be concurrent.  Other anthraquinones may be isopropyl, tert-butyl, tetramethylene, or 2-methyl anthraquinones, or mixtures, and other solvents may be mixtures of benzene and cyclohexanol, or of tetralin and cyclohexyl cyclohexanol.  The hydrogenation catalyst may be prepared by treating activated alumina or alumina gel of 4-100 mesh size with hot concentrated nitric acid, and igniting at 1000 DEG C.  The alumina is cooled, exposed to hydrazine vapour, and contacted with a platinum or palladium salt solution, which is reduced by the absorbed hydrazine, to deposit 0.05-5 per cent platinum or palladium on the alumina.  The alumina is then washed by decantation, ignited in air at 500-700 DEG C., and reduced in hydrogen at 30-40 DEG C. The catalyst may be regenerated by ignition in air.
Patent GB-681495-A (GB)
Title: Improvements in or relating to new tetrahydroindene derivatives and method of preparing same
Inventor: HERZFELD SIMON H
IPC: C07D303/10
Filed: 1950-08-01
Abstract: The invention comprises 1 : 2- epoxy-4 : 5 : 6 : 7 : 8 : 8 hexahalo-4 : 7-methano-3a : 4 : 7 : 7a-tetrahydroindanes of the formula <FORM:0681495/IV (b)/1> where X is bromine, chlorine or a mixture thereof and their preparation of oxidizing the cyclopentene ring of a 4 : 5 : 6 : 7 : 8 : 8-hexahalo - 4 : 7 - methano - 3a : 4 : 7 : 7a-tetrahydroindene (the Diels Alder adduct of hexahalocyclopentadiene and cyclopentadiene) with an organic per acid, such as perbenzoic, peracetic or mono-perphthalic acid, to form the epoxide.  In an example the Diels Alder adduct of hexachlorocyclopentadiene and cyclopentadiene is treated with peracetic acid in acetic acid to give the epoxide of the above structural formula in which X is a chlorine atom.  Specification 614,931 is referred to.
Patent GB-646757-A (GB)
Title: Improvements in or relating to electrical insulation and leakage-testing apparatus
Inventor: SIMMONDS JOHN CHARLES
IPC: G01R31/12
Filed: 1948-07-16
Abstract: 646,757. Testing insulation. AIRMEC LABORATORIES, Ltd. July 16, 1948, No. 19192. [Class 37] Insulation is tested by applying a D.C. voltage and observing any audio or super-audio frequency voltage variations. As shown in Fig. 1, the D.C. voltage is preferably obtained from a high impedance source consisting of a thermionic valve oscillator V1 and a rectifier 3 feeding terminals 10, 11 for application across the specimen to be tested; variation of the screen grid potential at P1 allows the magnitude of the oscillations, and thus of the D.C. potential, to be varied, a meter M indicating its value. Immediately prior to breakdown of the specimen, leakage currents due to ionization and occurring at audio- or super-audio frequency, develop, and are indicated either on a magic eye tube V4 or in a loudspeaker LS fed over amplifiers V7, V6, V5 from terminal 11. The magic eye tube V4 may be replaced by a meter between resistance R4 and earth, Fig. 3, not shown; this meter may be in the cathode circuit of a valve whose grid is connected to a tap on a resistance between terminal 11 and earth, Fig. 4, not shown. In a modification, one of the test terminals 12, Fig. 2, is earthed, and the other test terminal 11 is connected over amplifiers V5, V6, V7 to feed a cathode-ray oscillograph CRT and a loudspeaker LS; the voltage applied at 10 is measured by meter M2 in the cathode circuit of valve V8. Screening may be utilized as shown by broken lines. The current passing between terminals 10, 11 may be limited by any known means, e.g. by applying a control voltage from resistance R4 to a valve controlling the potential of the screen grid of valve V1.
Patent GB-861210-A (GB)
Title: Improvements in or relating to herbicides
Inventor: BUGGE ERASMUS THOMAS
IPC: A01N25/02
Filed: 1958-06-16
Abstract: A herbicidal composition comprises a major proportion of a substituted carbamate and a minor proportion of a substituted urea as active ingredients, and an emulsifying agent forming an unstable emulsion of the active ingredients in water.  The preferred active ingredients are N-phenyl-N1,N1-dimethyl urea, and isopropyl N-(3-chlorophenyl) carbamate. preferably dissolved in a coal tar naphtha They may be used in weight ratios of urea to carbamate of 1 : 12 to 1 : 2, preferably 1 : 4.  Specified emulsifying agents include a mixture of sodium dinonyl sulphosuccinate and a polyoxyethylene-castor oil condensate, a mixture of sodium resinate, tar acids and lauric diethanolamide, and a mixture of casein and borax.