baber/WOPTO huggingface dataset:
Patent GB-149707-A (GB)
Title: Improvements in or relating to the removal of calcium and magnesium from rock salt brine, or solutions of rock salt in water
IPC: C01D3/16
Filed: 1919-02-15
Abstract: In the process for the removal of the calcium and magnesium salts from brine by the addition of sodium carbonate and calcium or sodium hydroxide. the brine is maintained at a temperature of about 25 DEG C. and is gently stirred.  Under these conditions, the precipitate of calcium carbonate and magnesium hydroxide, which is ordinarily of a colloidal form, assumes such a physical character that it settles rapidly.  Specifications 4175/74 and 3599/78 are referred to.
Patent GB-1091871-A (GB)
Title: Improvements in and relating to propelling pencils and the like
Inventor: HARE RONALD WILLIAM
IPC: B43K21/08
Filed: 1965-01-28
Abstract: 1,091,871. Propelling pencils. R. W. HARE Ltd. April 15, 1966 [Jan. 28, 1965], No. 3780/65. Heading B6P. A screw-type propelling pencil has the slotted slider tube 3 and the tapering front portion 1 made as a unitary structure of moulded synthetic plastics material, such as polythene. Similarly made is the helix 5 with an extension 6 thereof, adapted to be frictionally engaged or coupled to the interior of the pencil barrel 7.
Patent GB-828603-A (GB)
Title: Processes for the production of cyclopentanophenanthrene derivatives
IPC: C07J75/00
Filed: 1956-04-11
Abstract: 2a ,4b  - Dibromo - 17a  - hydroxy - pregnane-3,11,20-trione is prepared by dibrominating 17a -hydroxy-pregnane-3,11,20-trione in the 2a ,4b  positions in a dioxane medium or by monobrominating 4b -bromo-17a -hydroxy-pregnane-3,11,20-trione in the 2a -position in a dioxane medium.  Two detailed examples are given. Specification 760,362 also is referred to.
Patent GB-970884-A (GB)
Title: Preparation of high purity titanium dioxide
IPC: C01G23/00
Filed: 1962-02-02
Abstract: A process for preparing pigment grade titanium dioxide comprises treating a titaniferous material with hydrochloric acid at 40 DEG  to 80 DEG  C., treating the aqueous leach liquor with either (a) a mono- or dialkyl-substituted orthophosphoric acid to remove titanium values, or (b) an alkyl phosphate or alkyl amine to remove contaminants, recovering the titanium values as the precipitated hydrated oxide, and calcining into anhydrous titanium dioxide. The titaniferous material may be roasted with an inorganic base prior to acidulation.  The organic extractant may be employed directly or in a water-immiscible carrier, and the titanium extract may be scrubbed with hydrochloric acid to remove any remaining iron contaminant. Hydrated titanium oxide may be precipitated directly using an inorganic base; alternatively, the titanium-containing extract may be treated with hydrogen fluoride or an acidic ammonium or alkali metal fluoride or bifluoride, and the precipitate converted to the hydrated oxide by treatment with a base. Calcination is preferably effected at temperatures above 800 DEG  C.
Patent GB-285431-A (GB)
Title: Improvements in the production of coloured films, sheets and the like
IPC: C08J3/21
Filed: 1928-02-09
Abstract: 285,431. British Celanese, Ltd., (Assignees of Dreyfus, C.), and Ellis, G. H. Feb. 16, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Dye preparations. - Coloured films, sheets or the like of cellulose esters or ethers, e.g. of cellulose acetate, nitrate, or methyl or ethyl cellulose, are. made by preparing a mixed organic solution of the cellulose derivative or derivatives and one or more water-insoluble colouring matters or compounds and thereafter forming the film, sheet or the like therefrom. The colouring matter may be dissolved in an organic solution of the cellulose ester or ether, or the colouring matter and cellulose derivative may be dissolved separately in solvents miscible with each other, the solutions being then mixed together. The colouring matters may be pretreated with one or more of the solubilizing agents of Specifications 219,349, 224 925, 242,393, 242,711, and 273,819. The following solvents are specified :-acetone, acetonebenzene, tetrachlorethane-alcohol, and chloroformalcohol. The colouring matters referred to in Specifications 219,349, 224,681, 227,183, and 237,943; 239,470, [Class 15 (ii), Dyeing, Processes. &c. for] ; 253,978, and 263.260 may be employed in carrying out the invention the following bodies being specified :-hexamethyl violet base, 4- toluene-azo-naphthalene-4-azo-phenol, 4-methoxy- 3 - nitrobenzene - 1 - azo - dimethylaniline, 1 : 4- diaminoanthraquinone, 1 : 4-di (monomethylamino-anthraquinone, 2 : 4-diniho-4<1>-dimethylaminodiphenylamine, and 4-chlor-2-nitrophenyl- 4'-tolylamine.
Patent GB-977744-A (GB)
Title: Disconnectable coupling with fluid conducting passage therein
Inventor: COLLEY RUSSELL SIDNEY
IPC: F16L37/252
Filed: 1962-02-02
Abstract: 977,744. Pipe joints. B. F. GOODRICH CO. Feb. 2, 1962, No. 4094/62. Heading F2G. A disconnectible coupling comprises a socket member 19 having an opening therein for receiving a coaxial socket-engaging member 20 at least one of the members having a fluid-conducting passage therein, which members, on engagement, are relatively rotatable to a sealed interlocking position and are releasably locked in said position by a latch carried by the socket-engaging member having a retractable locking portion engageable with an edge area of the opening in the socket member only when the members are in the interlocked position, a part of the locking portion having a greater rotational radius about the axial centre of the coupling members than the minimum distance of the engaged area to the axial centre whereby the said locking portion operates when engaged with the edge area positively to prevent relative rotation of the coupling members. As shown, the joint member 19, of aluminium alloy, stainless steel or a rigid thermoplastic material, is of circular configuration and includes an integral tubular portion 21 screwed into a flat annular ring 23, the planar faces 22, 24 of the portion 21 and the ring 23 between which the wall of an airman's pressure suit is clamped having annular grooves 25, 26 to accommodate sealing material. The member 19 also includes a seating surface 27 having an annular recess in which is received an 0-ring 29 of elastomeric material, the ring being compressed axially upon connection of the two members 19, 20; also the member 19 is provided with a continuous, annular sidewall 31 terminating in a number of overhanging segmental projections 32 defining a generally polygonal opening. The member 20 constitutes a hollow, integral nozzle 34 and has an end wall portion 40 which includes a number of planar, circumferentially spaced, flange portions 41 whereby the end wall portion has an outer peripheral configuration corresponding to that of the opening in the member 19. The member 20 is juxtaposed and rotated relative to the member 19 and into interlocked relation therewith whereby the flange portions 41 pass beneath the projections 32 as shown in Fig. 2. For preventing relative rotation from the interlocked position, Fig. 2, of the members a retractable spring latch 42 is mounted on the member 20 and operated by a lifting arm 45; the spaced tabs 44 of the latch, when the members are in the unlocked position, Fig. 3, engage on the projections 32. Several modifications are described, one of the members in one case being devised as a plug to close the passage of the other member.
Patent GB-104052-A (GB)
Title: Improvements in or relating to Railway Signalling.
Inventor: O'DONNELL JOHN PATRICK
IPC: B61L23/22
Filed: 1916-03-21
Abstract: 104,052. O'Donnell, J. P., and Glenn, S. L. March 21, 1916. Combined electrical and mechanical systems, non-automatic.-In a system in which the operation of the starting-signal at the sending-end of a block section to pass a train to the receiving-end of the section is controlled by a track circuit and by a contact device operable by the signalman at the receiving-end so as to open normally-closed contacts and to close normally-open contacts in a circuit which includes a normally de-energized relay at each end of the section controlling a local circuit including a magnet controlling a lock on the starting-signal lever, there is provided a control lever 5 in the cabin at each end of the section for operating contact-makers 6, 6<a> to make and break the normally closed contacts 10, 10<a> and normally open contacts 11, 11<a>, and an electric lock so arranged that, when the lock circuit through its magnet 24 is broken down by the line circuit being broken down or short-circuited, the lock engages a locking-bar 21 connected with the starting-signal lever 20 and thus locks it in the danger position. The circuit between the cabins may be through the track rails, as shown in Fig. 2, or through a line-wire controlled by track relays connected to the main section, and others connected to the rails at switch points and passing loops. Fig. 2 shows such circuits at passing loops controlling a circuit through the track rails of a long section. in the normal position, the contacts 6, 6a connect the line circuit through the rails 1 to relays 12, which are de-energized. To release the lock on the lever 20 at the sending- station, say A, the lever 5 at the receiving-station, say B, is reversed, thereby connecting the battery 27 at B to the relay 12 at A through the track rails 1, provided that the switch point tracks are lear, so that the relays 35 are energized, and that the main section 1 is clear. The relay 12 being energized closes the circuit to the lock-magnet 24, the indicator 19, and the signal-replacer 37. In a modified system, the circuit between the cabins passes along a line-wire controlled by track relays, and sending and receiving indicators are provided. The signals may be operated by power.
Patent GB-710180-A (GB)
Title: Improvements in and relating to vehicle brake actuation
IPC: B60T11/10
Filed: 1951-02-22
Abstract: 710,180. Controlling vehicles. VLVIAN, J. A. Jan. 16. 1952 [Feb. 22, 1951], No. 4293/51. Class 79(5) [Also in Group XXXIV] Vehicle brake actuation is effected by interconnecting the brakes and the throttle control so that throttle closing movements apply the brakes, the braking pressure being varied according to the speed of the throttle closing movements. As shown the brakes are operatively connected to the piston 6 of a cylinder 5 which is connected by a valve 1 to a pipe 2 leading to a vacuum reservoir; so that upward movement of a valve spindle 3 causes air to be drawn out of the cylinder 5 into the vacuum reservoir to apply the brakes. The valve 1 includes a regulatable opening 9 so that on releasing the brakes the partial vacuum in the cylinder 5 is filled with air through the opening 9. The spindle 3 is connected by a link 3a to the cylinder 10 of a dashpot within which is a loosely fitting piston 11 whose piston rod 13a is connected to an arm 13 of a lever pivoted at 15. The other arm 14 of the lever is connected by rods 16, 18 to the throttle pedal 23 pivoted at 21 and having a return spring 22. Slidably on the rod 16 is a boss 17a of a lever 17 connected to the butterfly valve 20 of the throttle. The boss 17a is arranged between stops 19a on the rod 16, a spring 19 being arranged between one stop and the boss.
Patent GB-121872-A (GB)
Title: Improvements in Appliances for Connecting Life Belts to Windows, and for like purposes.
Inventor: WEBSTER ERNEST
IPC: A47L3/04
Filed: 1918-03-12
Abstract: 121,872. Webster, E., and Farrell, E. March 12, 1918. Cleats.-A safety apparatus for window cleaner &c is provided with a rope f, which passes around the body and which can be held in adjustable length without slipping by means of two parallel tubes g', g<2>, either secured together or formed as one. Into one of these, g<1>, the rope is first passed through a central hole g<4> and out through the end thereof, and then completely through the second tube g<2> in the same direction. the end being finished off by a knot.
Patent GB-625894-A (GB)
Title: Improvements relating to thread controlling apparatus in textile machines
IPC: D03D49/06
Filed: 1946-02-12
Abstract: 625,894. Knitting-machines; lace machines. F.N.F., Ltd., MORRISON, J. L. M., WOODWARD, R. T. C., PEEL, R., and GREAVES, E. Feb. 12, 1946, No. 4381. [Classes 74 (i) and 74 (ii)] [Also in Groups IX, XXIV and XXXV] The speeds of rotation of the beams of a warp knitting-machine or of a lace machine are adjusted during operation of the machine to counteract the decrease in the effective diameter of the mass of the warps on the beams, in order to maintain the feeding of the warps at a constant rate. As described, two warp beams 4, 7 for a warp knitting-machine are driven through shafts 8, 9, connected to gearing housed in a gear-box 11. A bobbin 13 or 14 is provided for each beam to supply a thread which passes round its respective beamed warp and then to the needles to be taken in the normal manner, the bobbin thread being delivered at the same speed as the warp. Between each beam and its bobbin, the yarn engages a pulley 18 or 19, which is freely rotated as the yarn is withdrawn. A bracket 42 is mounted on each of the shafts 23 supporting the pulleys and carries electrical contact brushes 40 which are held in contact with discs 30, 31, provided with electrical contact segments. The discs 30, 31 are driven from the main shaft at a constant speed equivalent to the desired rate of delivery of the warp threads and rotate synchronously with the pulleys. As the warps are fed from the beams, the effective diameter of the warps on the beams decreases and the rate of delivery of the warps becomes less. Consequently, the pulley tends to lag behind the disc and relative movement takes place causing the brushes to make contact with the segments, thereby completing an electrical circuit to operate a clutch and effect an increase in the speed of rotation of the beam. Relative movement in either direction is counteracted by the brushes engaging segments on the discs and effecting a decrease or increase in the rotation of the beams. The varying of the rotation of the beams is achieved through cone and ring contact, the ring being moved along the cone to alter the speed. Indexing means, associated with the control moving the ring, indicates the ratio of the drives. Alternatively, photo-electric cells co-operating with apertures formed in the pulleys and discs may effect the variation of the speeds of the beams or the disc and pulley may constitute part of a differential gearing, a third gear meshing with both and effecting the variation. Specification 548,496 is referred to.
Patent GB-959692-A (GB)
Title: Separation of mixtures of alkyl metal compounds
IPC: C07F7/22
Filed: 1961-02-06
Abstract: Mixtures of trialkyl aluminium with other metal compounds are separated by addition of an alkali metal tetraalkyl boron compound to convert the trialkyl aluminium into an alkali metal tetraalkyl aluminium compound thus making it separable from the other alkyl metal compounds.  It is preferred that the reaction mixture should contain stoichiometric quantities of alkali metal tetra-alkyl boron and trialkyl aluminium. Elevated temperatures may be used, as also may be solvents such as aliphatic or cycloaliphatic hydrocarbon compounds. The alkali metal tetra-alkyl aluminium compounds formed are precipitated as a heavy oily bottom layer when working at temperatures above their melting point:  otherwise they are precipitated in crystalline form.  The trialkyl boron formed may be distilled off after separation of the phases, or it may be entrained in a gas or vapour, or, when the alkyl metal compound is insensitive to water, washed out by aqueous alkaline solutions. Alkyl metal compounds which may be separated include alkyls of beryllium, zinc, cadmium, mercury, gallium, indium, thallium, germanium, tin, antimony, and bismuth.  The process is particularly suitable to the separation of the mixture obtained by electrolysis of alkali metal tetra-alkyl aluminium compounds using anodes of the metals specified. Specifications 814,609, 848,364, 923,651 and 946,686 are referred to.
Patent GB-806203-A (GB)
Title: Improvements in or relating to fibre feeders for textile machinery
Inventor: OWEN THOMAS WILLIAM
IPC: D01G23/08
Filed: 1955-02-15
Abstract: 806,203. Automatic control systems. BRITISH COTTON INDUSTRY RESEARCH ASSOCIATION. Feb. 14, 1956 [Feb. 15, 1955], No. 4405/55. Class 38 (4). [Also in Group IX] Fibre is fed at a constant rate to textile machinery by feeding it pneumatically to a constant-rate take-off mechanism initially at a rate of input in excess of the rate of take-off, accumulating surplus input of the fibre not accepted by the take-off mechanism, continuously removing fibre from the accumulating surplus and actuating input-reducing means for the pneumatic feeder to limit the surplus accumulation. As shown, Fig. 3, material from a preceding machine is delivered in an air suspension through a duct 18 to a suction cage 11 which deposits it in a feed-box 20b. Flaps 11a on cage 11 seal the cage against the casing 14 and also wipe surplus material from the top of the feed box which is thus kept full above delivery rollers 21, 22. Surplus material wiped by flaps 11a falls into a compartment 20a from which it is continuously returned by drum 19 to the part 18a of the main inlet duct 18. When an excessive amount of surplus material has accumulated in compartment 20a a weighted flap 27 is pressed back to actuate an electric switch to slow down or stop the preceding machine. The partition 20 is adjustable along a notched support bracket 26 and rollers 21, 22 are adjustable as indicated by arrows. In a modification, Fig. 4, the switch is actuated by the weight of material in compartment 20a depressing a hinged bottom plate 30.
Patent GB-1120762-A (GB)
Title: Acrylic polymer composition
IPC: C08F220/14
Filed: 1966-02-01
Abstract: An acrylic polymer composition comprises (I) a copolymer of methyl methacrylate and isobornyl acrylate and/or isobornyl methacrylate and (II) a flame-resistant polymeric phosphorus compound, the amount of phosphorus compound being 5 to 25% by weight of the total composition and the amount and nature of the copolymer being such that the methyl methacrylate units therein constitute at least 50%, and the isobornyl acrylate and/or methacrylate units therein constitute 5 to 30%, by weight of the total composition, with the proviso that some of the methyl methacrylate units may optionally be replaced by units of an acrylic modifier as long as no more than 5% by weight, based on the total weight of the composition, of units of acrylic modifier are present.  The compositions may be obtained by polymerizing the monomers in the presence of the phosphorus compound.  Suitable acrylic modifiers are, e.g., ethyl acrylate, methacrylic acid and glycidyl methacrylate.  In the examples are used: a commercially available phosphonate containing chlorine, methacrylic acid, a chlorine and bromine containing phosphonate, phosphonate polymers prepared from (1) ethylene chlorophosphonite, methylene dichloride and acetone, (2) ethylene chlorophosphite, methyl hexyl ketone and ethyl alcohol, (3) ethylene chlorophosphite and diethyl ketone, (4) 1,2-propylene chlorophosphite, methylene dichloride, acetone and water, (5) acetone, 1,3-butylene chlorophosphite, and methylene dichloride, (6) ethyl acetoacetate, ethanol and ethylene chlorophosphite, (7) cyclohexanone, ethylene chlorophosphite and methylene dichloride. The addition polymerization catalyst used was acetyl peroxide in dimethyl phthalate and the compositions were polymerized between glass plates.  In a comparative example t-butyl methacrylate is used.
Patent GB-101661-A (GB)
Title: Improvements in Internal Combustion Engines.
Inventor: SOUTHALL JOSEPH
IPC: F02B25/00
Filed: 1916-03-25
Abstract: 101,661. Southall, J. March 25, 1916. Two - stroke c y c l e engines. - A valveless engine with one end of its cylinder forming a pump has a pump inlet port at E and cylinder admission and exhaust ports at C, B respectively. Reference has been directed by the Comptroller to Specifications 1914/10, 11629/11, 21984/13, and 24076/14.
Patent GB-607899-A (GB)
Title: Improvements in or relating to machines for handling strip material
IPC: B21D43/09
Filed: 1946-02-13
Abstract: 607,899. Shearing. FAIREST, Ltd., M., and FAIREST, D. H. Feb. 13, 1946, No. 4437. [Class 83 (iv)] [Also in Group XVI] In a machine for feeding a strip for safetyrazor blades to a press, an idle roll normally supported by the web operates a stop mechanism on failure of the strip. The strip is fed through a guide 73, friction pads 49, bridge 68 under an idler roll 44 by continuously driven feed rolls 25, 28 and passes through a friction wiper 50 to a punch and die and intermittent feed mechanism. The upper feed roll 28 and the idler roll 44 are carried on a weighted lever 33 which may be turned clockwise, Fig. 1, for setting the machine. The roll 44 is guided in slots 46 in the lever 33 and normally is supported by the strip. Should failure of the strip occur, the roll 44 drops in the slots 46 to operate a switch 81 in motor, clutch or brake circuits.
Patent GB-364385-A (GB)
Title: A combined frictional pocket ignitor and watch
IPC: F23Q2/32
Filed: 1931-02-12
Abstract: 364,385. Watches combined with igniters. SOMMER, H., DelÚmont, Switzerland. Feb. 12, 1931, No. 4445. Convention date, Feb. 15, 1930. [Class 139.] In a pocket igniter in which a circular watch is mounted in a case 11 in the casing 1, the member 4 carrying the friction-wheel and flint is mounted removably in a conical aperture in the top plate 2 and extends only through a portion of the casing so as not to interfere with the case 11, which is made as large as the width of the casing will permit. The watch movement 13 is held by a bezel 16 in a case 12 fitting in the case 11, the winding stem extending through a slot 11<1> with the winding button in a recess 14. The case 12 may be removed by inserting a pin through an aperture 15. A cover 9 for the wick and wheel is carried by a pivoted arm 8 adapted to be held in the open or closed position by a spring-pressed plunger 18. A filling aperture with a screw-plug 6 may be provided.
Patent GB-665922-A (GB)
Title: Improvements in hydraulic control units for road and snow plough equipment
IPC: E01H5/06
Filed: 1949-02-18
Abstract: 665,922. Bulldozers. EASTERN STEEL PRODUCTS, Ltd. Feb. 18, 1949. [March 10, 1948]. No. 4515/49. Class 68 (i). [Also in Group X] In order that various types of hydraulically-operated equipment such as snow ploughs 30 ... 36 and grader blades 33 can be easily fitted to and removed from a vehicle, the control valves for the various hydraulic motors of the said equipment are mounted in a housing and are connected to the hydraulic pressure system by conduits 12 and couplings 11 secured in the sides 10 of the housing. These parts of the hydraulic system are all permanently mounted on the vehicle chassis and can be adapted to serve, as required, all the hydraulic motors of the detachable equipment, the motors being connected by flexible hoses such as 13 and 48 to the couplings 11 that are of the type in which the male and female parts screw, snap on or plug together. The housing and reservoir tank of the permanent hydraulic system serve as supporting means, if desired, for the hydraulically-operated equipment.