baber/WOPTO huggingface dataset:
Patent GB-172926-A (GB)
Title: A process for the extraction of copper from its ores
IPC: C22B15/00
Filed: 1921-07-20
Abstract: 172,926. Nevill, P. W., and Soanes, H. Dec. 13, 1920, [Convention date]. Precipitating.-Copper is extracted from its oxidized ores or other oxidized products by converting the oxidized copper contents into cement copper by the action of a reducing- agent on a pulp comprising a mixture of crushed ore or product, water, and an acid or salt. Finely crushed ore may be mixed with water, finely-divided iron, and a small proportion of ferrous sulphate, sulphuric acid, or a mixture of ferrous sulphate and common salt, and steam blown through the mixture; or such a mixture containing sulphuric acid may be allowed to stand for some days. The separation of the resulting .copper from the gangue and slime may be effected by settling, flotation, or other means. Aluminium or zinc may be used as a reducing-agent instead of iron. In some cases a medium such as an acid which has been used for one precipitation may be utilized as a salt solution for subsequent precipitations.
Patent GB-571953-A (GB)
Title: Improvements in or relating to brakes for perambulators and like baby carriages
IPC: B62B5/04
Filed: 1943-11-23
Abstract: 571,953. Brakes for perambulators and the like. GRIFFITHS, W. Nov. 23, 1943, No. 19543. [Class 103 (i)] In a brake for perambulators and other baby carriages that is released by rotating the propelling handle and is applied by a spring when the handle is released, the brake shoes 1 are carried by levers 2 pivoted at 3 to the frame 4 and connected at 5, 6 to a quadrilateral linkage, the other pivots 7, 8 of which are connected to a spring 10 which tends to apply the brake and by a cable 9 to' the release mechanism. This comprises a sleeve 15 slidable upon a crosstube 18 fixed between the side arms 14 within the tubular handle 13 rotatably supported between knurled heads 19<x>, 20<x> of screws 19, 20 engaging the tube 18. The heads 19<x>, 20<x> carry other screws for nuts 19a, 20a. The cable 9 extends through one arm 14 and screw 20 to a pin 16 carried by the sleeve 15 and extending through a slot in the tube 18 to guide the sleeve. The handle and the sleeve have co-operating screw-threads so that by turning the handle the brake is released. In a modification, the handle carries a pin which engages a cam slot in the sleeve 15. The upper ends of the arms 14 may be bent into alignment with the handle and the parts be secured together by a right-and-left-handed screw engaging adjacent ends of the tube 18 and of the arm, each screw being secured to a head upon which seats the end of the handle 13.
Patent GB-1192324-A (GB)
Title: Method of Improving Physical Properties of Electric Resistance Welded Steel Pipe
IPC: C21D9/50
Filed: 1968-04-25
Abstract: 1,192,324. Making pipes. AMERICAN CAST IRON PIPE CO. 25 April, 1968 [26 May, 1967], No. 19601/68. Heading B3A. [Also in Division F2] A method of maxing electric resistance welded steel pipe includes rapidly heating the sized pipe to a temperature below the transformation temperature of the steel, removing the pipe from exposure to the heat source as soon as it is up to temperature, and cooling the pipe to ambient temperature. The pipe is formed by conventional uncoiling, trimming, forming, welding, seam annealing, sizing and cutting and is then subjected to the stress relieving operation. The latter comprises passing individual pipe sections through a gas-fired barrel-type furnace 18, the temperature therein being such as to heat the pipe to the required temperature within a minute. The pipe then leaves the furnace substantially as soon as it is up to temperature and it is then cooled, preferably by allowing it to air cool naturally. The pipe is heated within the range 300‹ F.-1000‹ F. and at temperatures of 600‹ F. or less the pipe may be water cooled. Prior to stress relieving the pipe may be subjected to cold expansion by the application of internal hydrostatic pressure. Alternatively mechanical expansion may be used and a pipe straightening step may also be included if required. Stress relief applied according to the invention increases the yield strength of the pipes and a further increase is obtained by the additional step of cold expansion, Figs. 3, 5, 6 (not shown).
Patent GB-860140-A (GB)
Title: Improvements in or relating to lighting fittings
Inventor: COLEMAN ARTHUR SIDNEY
IPC: F21V3/00
Filed: 1958-06-19
Abstract: 860,140. Electric light fittings. GENERAL ELECTRIC CO. Ltd. Sept. 14, 1959 [June 19, 1958], No. 19632/58. Class 75 (2). In a lighting fitting incorporating a non- planar shade mounted so as to screen the lamps carried by the fitting, the shade is formed by the interlocking of elements each consisting of a strip of light transmissive material formed with a bead along one longitudinal edge and a re-entrant channel along the other longitudinal edge, the interlocking beads and channels being so shaped as to allow a limited angular rotation about the joined edges. The elements may be of synthetic resin formed by an extrusion process. In the fitting shown, the elements 4 may be mounted in channels 3 in end plates 2 secured to an opaque cover 1 supporting the lighting device. The outer surfaces of the elements may be plane and the inner surfaces fluted and sand blasted to provide a matt finish. The channels may be longer than the sum of the widths of the elements used so that the elements can be slid to one side leaving a space for access to the interior of the fitting One end of the channels may alternatively be open to permit insertion of the elements, a removable plate being provided in the top of the fitting for closing the open ends.
Patent GB-172678-A (GB)
Title: Improved process for cooling internal combustion engines
IPC: F02F1/00
Filed: 1920-07-08
Abstract: 172,678. Wade, H., (Semmler-Motoren- Ges.). July 8, 1920. Cylinders, construction of and cooling.-Vertical cylinders having cooling ribs 4 on the head and longitudinal ribs on the barrel which are surrounded by a casing are cooled by current of air forced downwards through the casing. The admission and exhaust pipes 1 may be lenticular in cross-section, and pockets 2 may be formed in the casing to direct the air between the ribs on the barrel. To facilitate casting, the ribs may be arranged in groups as shown in Fig. 3, in which all those in a group are parallel; the ribs on the barrel may be undulating to alow of free expansion. The joint between the barrel and the cover is made at a place where the flow of heat is least and the flanges 11, Fig. 6, are situated outside of the casing to prevent the obstruction of the air current therethrough. In oil engines, the admission pipe may be dispensed with and the cooling air used for scavenging.
Patent GB-756623-A (GB)
Title: Improvements in or relating to method and apparatus for particle-mass analysis
IPC: H01J49/00
Filed: 1954-07-06
Abstract: 756,623. Mass spectrometers. BECKMAN INSTRUMENTS, Inc. July 6, 1954 [Sept. 8, 1963], No. 19741/54. Class 39 (1). In a mass spectrometer, the particle beam is passed through an array of electrodes carrying alternating or oppositely pulsed potentials in alternate sequence and so spaced that the particles of one particular mass are decelerated to a maximum extent and pass to deflecting means whereby those particles of minimum velocity are alone deflected into the collector. In Fig. 1 the electrodes are apertured plates and in Fig. 2 (not shown) they are of tubular form and decreasing in length and diameter downstream. They may also be in the form of grids. The ion source 11 comprises a cathode 21 and anode 24, with gas admitted to chamber through a leak 25. The ions are accelerated through an accelerating and focusing section 13 comprising electrodes 27, 28 and an ion lens 29 each carrying D.C. and/or A.C. potentials, and into a decelerations analyser section 14 comprising a linear array of apertured discs 30. Alternate electrodes 30 are electrically interconnected one set to a suitable A.C. oscillator 33, the other to earth giving alternatingly opposite polarities to the electrodes. The oscillator 33 may be amplitude or frequency modulated. The A.C. potential to scan the mass spectrum of the particles may be sine or square waves or pulses, and in accordance with the potentials applied and the distances apart of the electrodes ions of a particular mass are more effectively decelerated than the other ions which are out of phase at the decelerating points. This ion stream comprising particles of differing velocities passes into the region between two deflecting plates 40, 41 at an angle to the stream, and those of least velocity have maximum deflection and with appropriate potentials on plates 40, 41 pass just under plate 45 into a collector 49 to produce a signal in indicating, recording or control means 35. Theoretical conditions and safeguards are discussed in the Specification.
Patent GB-855302-A (GB)
Title: Improvements relating to light buoys
IPC: B63B51/04
Filed: 1957-06-24
Abstract: 855,302. Buoys. McCOSH, A. K. May 12, 1958 [June 24, 1957], No. 19754/57. Classes 75(3) and 75(4). [Also in Group XXXIII] The lens (or other light deviating device) of an illuminating floating apparatus for light buoys and ships which is disposed around the light source and within a lantern fixed to the floating body, is capable of universal movement around its focus and relative to the lantern in order to maintain a level attitude of the light beam despite tilting of the apparatus. The lens 7 of a bouy moves universally with respect to the lamp housing 4 and a source of light located at the centre of the lens, 6 (not shown), both of which are rigidly attached to the buoy float, by mounting the lens on a carriage 15 having guide wheels 16, Fig. 21, running on upper guide rails 14 arcuate in a plane parallel to the normally vertical axis of the buoy and centred on the light source. The rails 14 being mounted on the lower carriage 10, Fig. 3, having guide wheels 11 running on arcuate guide rails 9 carried by the lamp housing and mutually perpendicular to the rails 14 and also centred on the light source. The carriages 10, 15 have depending extensions 19, Fig. 3, 20, Fig. 2 to act against respective rail stops 13, 18 to limit the arcuate movement of the carriages, e.g. to 20 degrees. Buffers 23, 24 if necessary, on the extensions 19, 20 limit the movement to, e.g. 15 degrees. Keepers 21, Fig. 3, 22, Fig. 2 prevent tipping of the carriages. The light source may move with the lens and the carriages may be weighted.
Patent GB-478514-A (GB)
Title: Process for the manufacture of azodyestuffs
IPC: C09B29/08
Filed: 1936-07-17
Abstract: Azo dyes are made by coupling a diazotized aromatic amine in acid medium with a p-coupling monamine of the benzene series, in which one hydrogen atom of the amino group is substituted by an alkylene oxide group and the other hydrogen atom of the amino group may be substituted by a hydrocarbon radical, e.g. alkyl, alkenyl, hydroxyalkyl, alkoxyalkyl or aralkyl, the components being selected in such a manner that the molecule contains at most one salt-forming group.  They colour cellulose esters, e.g. acetate artificial silk and mixed fabrics containing the same.  In examples, the following dyes are described: (1) and (2) p-nitroaniline or o-chloro-p-nitroaniline --> methylphenylamino-1 : 2-propylene oxide (yellowish scarlet and bluish red); (3) p-nitroaniline --> ethyl-m-tolylamino-1 : 2-propylene oxide (bluish red); (4) 6-bromo-2 : 4-dinitroaniline or 2 : 4-dinitroaniline --> (3-methyl - 6 - methoxy) - n - butylamino - 1 : 2-propylene oxide (reddish blue and bluish violet); (5) 4-nitroaniline-2-sulphonic acid --> methylphenylamino - 1 : 2 - propyleneoxide (deep bordeaux when printed on tissue as sodium salt in a paste containing dithiodiglycol and gum solution); (6) aniline-3-sulphonic acid --> methylphenylamino - 1 : 2 - propyleneoxide (yellow from a bath containing ammonium chloride).  The following additional components are also specified in a table: 2 : 6-dichloro-4-nitraniline, 6 - ethoxy - 2 - aminobenzothiazole, 5 - nitro - 2 - aminophenylmethyl - sulphone, 4 - methylsulphonyl - 2 - aminophenylmethylsulphone, p-aminobenzoic acid ethyl ester; ethylphenylamino- and n-butyl-m-tolylamino-1 : 2-propylene oxide.  Specification 275,622, [Class 2 (iii)], is referred to.
Patent GB-278138-A (GB)
Title: Improvements in, or relating to, means for locking lift doors
IPC: B66B13/20
Filed: 1926-08-12
Abstract: 278,138. Coates, A. F. Aug. 12, 1926. Lift doors, locking and unlocking. -Safety-bar door controlling means of the kind described in Specification 261,828 is combined with means, such as a rocking lever and latch operable by the lift cage, for positively locking the safety-bar in its operative position until such means are released by the arrival of the cage opposite the opening of the well door. The safetybar 3 is mounted on pivots 6 on the well door lintel so as to normally keep the door 1 in its closed position and has an inwardly projecting latch 8 adapted to be held in the locking position by a lug 7<a> on a locking lever 7 mounted on a spindle 9 which also carries operating arms 13, 14. The safety-bar is connected as by linkage 19 to a switch in a sealed casing 20, the switch being in the power circuit, in the case of an electrically operated lift, or to an auxiliary stop valve in the case of a hydraulically operated lift. As the cage 11 approaches a landing opening an unlocking ramp 10 on the cage engages a roller on the end of the arm 13 and swings the locking lever 7 out of engagement with the latch 8 and so frees the safety-bar 3. The lift is stopped in the usual way and the door is pushed open so turning the safety-bar upwards through the engagement therewith of the toothed piece 4, Fig. 5, on the door. This movement of the safety-bar through its associated linkage opens the switch or closes the stop valve in the power circuit. When the door is closed the consequential turning of the safety-bar closes the switch or opens the stop valve so that the cage can be started and its initial movement carries the unlocking ramp 10 out of engagement with the arm 13 so that the locking lever 7 turns by gravity and engages the latch 8. To ensure a complete closing and locking of the door, a locking ramp 16 acts upon the arm 14 of the locking lever, if the said lever has not made its complete movement owing to the door not having been completely closed and forces the lever beneath a cam-shaped part of the latch, so completing the movement of the latch and safetybar and consequently of the door.
Patent GB-381940-A (GB)
Title: Means for utilising the form factor of alternating currents for signalling or other systems
IPC: H04Q1/446
Filed: 1931-07-11
Abstract: 381,940. Pressure meters. BEER, C. A., 35, Browning Avenue, Sutton, Surrey. July 11, 1931, Neo. 19978. [Class 37.] A device for discriminating between currents of different wave form, e.g. (sinusoidal) noise or signal currents and (peaky) speech comprises means responsive separately to the peak voltage and the average or r.m.s. voltage. The invention has application in telephone repeater systems with echo suppressors which must not be operated by noise and in telephone systems using voice frequency signalling. In the arrangement shown, incoming currents are divided and passed via circuits 3, 4 to preferably full-wave rectifiers 5, 8. The rectifier 5 is shunted by a condenser 7, which becomes charged to the peak voltage, and a resistance 6. No such condenser is provided across the rectifier 8 and the voltage at the terminals of resistance 9 thus follows the fluctuations of the input. The peak voltage and the r.m.s. or mean voltage produce a joint effect in a measuring instrument connected to terminals 10, or may jointly affect condition of an amplifying valve. In a modification the resistances 6, 9 are replaced by the windings of a differential relay. Undesired frequencies may be barred by filters.
Patent GB-1010277-A (GB)
Title: Improvements in and relating to optical interforometers
Inventor: MARTIN ALBERT EDWARD
IPC: G01J3/453
Filed: 1963-05-20
Abstract: 1,010,277. Interferometers, spectrometers. SIR HOWARD GRUBB PARSONS & CO Ltd. May 12, 1964 [May 20, 1963], No. 20020/63. Heading G2J. An optical interferometer includes means for producing a difference in path length of a beam of radiation, said means comprising three plane mirror surfaces M 8 , M 9 , M 10 , the mirror surfaces M 8 , M 9  being rigidly connected together and mounted for rotation about an axis parallel to but not coincident with the intersection of the planes containing the mirrors M 8 , M 9 , the third mirror M 10  being fixed in a position such that its surface is perpendicular to a collimated beam of radiation which has been reflected by the mirrors M 8 ; M 9  in turn. As shown in Fig. 3, the mirrors M 8 , M 9  are rotated about a line contained in the plane of the mirror M 8 . The means of rotation comprises a screw 9 having a flat surface over which one end H of the lever L is arranged to move, the lever L lying in the plane of the mirror M 8 . The interferometer further comprises a semi-transparent plate B which splits a collumated beam into a transmitted beam and a reflected beam, the latter being directed on to the mirror M 8  by which it is reflected on to the mirrors M 9 , M 10  and thence returned to the plate B. The transmitted beam is also returned to the plate B where it is reflected on to condensing mirrors M 5 , M 4  and M 7 , M 6 . The returned reflected beam is transmitted by the plate B and passes to the mirrors M 4 -M 7 . This condensing system focusses the two beams at a point F and subsequently on a detector D. The two beams are brought into phase by rotation of the mirrors M 8 , M 9 , until the paths traversed by the initially reflected and transmitted beams are of equal length, when a strong signal will be produced by the detector. The apparatus may be used to deduce the wavelength distribution of radiation from the source, or the absorption characteristics of a sample may be determined by placing it at the focal point F.
Patent GB-610044-A (GB)
Title: Improvements in universal joints
IPC: F16D3/205
Filed: 1945-08-07
Abstract: 610,044. Universal joints. SOC. DE CONSTRUCTIONS MECANIQUES CHENARD & WALCKER. Aug. 7, 1945, No. 20181. Convention date, Oct. 19, 1943. [Class 80 (ii)] The intermediate member of a double universal joint is built up of five parts comprising an outer sleeve 41, inside each end of which' are attached by welding or screws 60 opposed pairs of members 56, 57, 58, 59 forming outer parallel cylindrical guides 54, 55, for spherical rollers 52 carried in pairs on transverse trunnions 48 on spherical members 44, 45, secured to the shafts, and a central cylindrical guide 61 for the shaft spherical members themselves. An elastic axial loading device (not shown) for maintaining engagement of a ball-and-socket centring device 62 directly connecting the shaftends, is provided at the outer end of the driven shaft. Specification 596,945 is referred to.
Patent GB-775189-A (GB)
Title: Improvements in scaffolding
Inventor: WATERWORTH JAMES
IPC: E04G1/15
Filed: 1954-07-10
Abstract: 775,189. Scaffold planks. TOWNSON & SONS, Ltd., W. July 11, 1955 [July 10, 1954], No. 20245/54. Class 20(2) A scaffolding plank is formed from mild steel sheet rolled into a plurality of rectangular longitudinal corrugations B with vertical outer side portions b inturned at their lower edge b<SP>1</SP> to form flanges, timber or other non-slip inserts C being inserted into the slots between adjacent corrugations on the face of the plank to provide a non-slip tread. The portions b<SP>2</SP> and the inserts C may be treated with bitumastic solution a<SP>3</SP> mixed with carborundum to provide a non-slip surface.
Patent GB-601394-A (GB)
Title: Improvements in illuminating devices more particularly for photographic purposes
IPC: G03B27/54
Filed: 1945-08-08
Abstract: 6 0 1,3 9 4. Lamps for photographic printing &c. BLOCK & ANDERSON, Ltd., and SHAND, S. G. Aug. 8, 1945, No. 20322. [Class 75(iv)] [Also in Group XX] A lamp suitable for use in a photographic printing-machine such as described in Specification 595,749 [Group XX], comprises a number of light sources such as tubular electric lamps arranged in a housing 10 and each provided with a cylindrical reflector 3 having a flanged aperture 4. The reflectors are rotatable through 180 degrees from one position in which the flanges 12 of adjacent reflectors overlap so as to give the maximum reflection to a position in which the flanges again overlap and completely mask the lamp 1. The housing 10 is enclosed in an apertured housing 11 allowing the entrance of cool air through the tubular ends of the reflectors 3, either by convection or a motor driven fan. The reflectors may be operated through belt or chain and sprocket gearing either by hand or by an electric motor which may be fitted with an automatic timing device.
Patent GB-848978-A (GB)
Title: Improvements in hydraulic accumulators
Inventor: MOULTON ALEXANDER ERIC
IPC: F16F13/00
Filed: 1957-06-28
Abstract: 848,978. Hydraulic accumulators. MOULTON DEVELOPMENTS Ltd. June 12, 1958 [Jan. 28, 1957], No. 20458/57. Class 69 (2). [Also in Group XXXII] An hydraulic accumulator comprises thickwalled rubber tubing 1 having ribs 2 and mounted in a sleeve 5 which limits the radial and longitudinal distension of the tubing under internal hydraulic pressure. The ribs, which act as compression springs, are of approximately square section, and are so spaced apart that when the accumulator is fully loaded the gaps between them are almost closed. Terminal fittings 3, 4 enables the accumulator to serve as an interconnecting duct, alternatively the accumulator may be closed at one end. The sleeve 5 may be ordinary steel tubing, or braided, reinforced spiral, or interlocked spiral tubing. Specification 813,259 is referred to and Specification 810,191 is referred to in the Provisional Specification.
Patent GB-1425406-A (GB)
Title: Apparatus for cleaning flue gas
IPC: B01D53/50
Filed: 1973-04-30
Abstract: 1425406 Gas cleaning apparatus BABCOCK & WILCOX CO 30 April 1973 [13 Sept 1972] 20469/73 Heading B1R A gas cleaning apparatus for dust laden flue gases containing sulphur oxides comprises an upright scrubber 7, preferably of venturi form, an upright sulphur oxides absorber 9 separated from 7 but joined thereto by a separting chamber 8, a scrubber nozzle for spraying a first scrubbing liquid into the gas passing through 7, an upright deflector 17 in 8 deflecting the gas stream downwardly, a demister 21 in the lower portion of 9, nozzles 23 in the afterpart of 9 for discharging a second liquid into the gas passing upwardly therethrough, collector troughs 25, 32 for collecting this liquid and feeding it to sump 28 from where it is recirculated to nozzles 23, wherein the first liquid collects in sump 18, remains separate from the second liquid and is pumped back to feed the nozzles in 7. Chamber 8 has a sloping bottom to feed the first liquid into 18. The demister 21, preferably of chevion type is washed by liquid from nozzle system 19. Troughs 25, 32 are of open top, U and trapezoid cross section and in addition a further set of troughs 26, 31 with an associated recirculatory nozzle system 27 may be provided higher up the tower. Perforated plates 35 provided with upright partitions 36 (Fig. 3 not shown) are included in 9 between nozzles 23 and troughs 25, 32.