baber/WOPTO huggingface dataset:
Patent GB-1509525-A (GB)
Title: Separation of metals
IPC: C22B3/08
Filed: 1974-03-21
Abstract: 1509525 Precious metal recovery MATTHEY RUSTENBURG REFINERS (PTY) Ltd 19 March 1975 [21 March 1974] 12599/74 Heading C1A Precious metal (Au + Pt group metal) is partially separated from concentrates containing Ag and base metals by (1) treatment with H 2 SO 4  (containing not more than 10 wt. per cent H 2 O) at#100 C., and (2) extraction of the base metal + Ag sulphates transformed with water, optionally containing other solutes.
Patent GB-848522-A (GB)
Title: Improvements in and relating to electric circuit breakers
IPC: H01H73/30
Filed: 1957-04-17
Abstract: 848,522. Automatic circuit-breakers. MECHANICAL PRODUCTS Inc. April 17, 1957 [May 29, 1956], No. 12619/57. Class 38 (5). The overload protection arrangement of a circuit-breaker, Fig. 1, includes a " hot " wire 63 which is electricallyconnected to the moving contact 47 via a pivotally-mounted element 51 forming part of a latch device normally keeping the contacts 19, 47 closed. Expansion of the wire 63 on passage of overload allows the element 51 to pivot and release the latch so that the spring 49 can move the arm 43 anticlockwise and thus open the contacts. The plunger 21 simultaneously rises under the influence of a spring 33 and the circuit-breaker can be reset by pulling a knob 27 on the plunger downwards. The circuitbreaker may also be opened manually by pulling the knob 27 down until the flanges 37 on the plunger engage detents 41 on a spring 39 attached to the casing. Indication of whether the breaker is closed or has been opened manually or by overload is given by the position of the knob 27 and differently-coloured rings 31, 32 above the knob. Fig. 5 shows a modification which is not equipped for manual operation. When the " hot " wire 147 extends on overload the spring 143 pulls a lever 131 to the right and releases a pawl 135 from the end of the pivoted arm 123 carrying the moving contact 127. A spring 129 opens the contacts and the plunger 119 is raised by a spring 121. The breaker is reset by pushing down the plunger. The tension in the wire 147 may be adjusted by a screw 155. Fig. 8 shows a further form having a fixed contact 221 mounted on one main terminal 219 and one end of the " hot " wire 251 connected to the other main terminal 215. The other end of the wire is attached to one arm of a bell-crank lever 237 pivoted at 239 and the other arm of the lever carries a pawl 241 which engages one end of a pivoted arm carrying the moving contact 223 at its other end. Extension of the wire 251 on overload causes the lever 237 to be moved clockwise by a spring 253, thus unlatching the arm 225 and allowing the contacts to be opened by the spring 235. Simultaneously the plunger 229, on which the arm 225 is pivoted, is moved downwards by a spring 231. In the open position, the pawl 241 completes a circuit from the main contact 215 to an auxiliary terminal 255 which is in a warning circuit. The " hot " wire may, in all forms, be shunted across the load current.
Patent GB-495033-A (GB)
Title: Improvements relating to the reproduction of sound films
IPC: G03B31/02
Filed: 1937-05-04
Abstract: 495,033. Reproducing sound from combined picture and sound films. I. G. FARBENINDUSTRIE AKT.-GES. May 4, 1937, No. 12689. Convention date, May 23, 1936. [Class 40 (ii)] A sound-reproducing apparatus for picture- and-sound films is adapted for reproducing sound irrespective of the side of the film on which the sound record is positioned, without adjustment of the sound reading station and light source 12, optical system 6, or photoelectric cell 7, by providing a guide roller 4 in advance of the sound drum 5 and two spaced guide rollers 8, 10 immediately beyond the drum. A film 2 is led over a roller 1 and then round the guide roller 4 and lower portion of the sound drum, past the sound-reading station and thence round the roller 8 to the sprocket 9, the drum rotating as indicated by the full line arrow. The emulsion side of the film does not contact with the drum. If a film 3 with oppositely positioned sound record is to be employed, it is led over the roller 1, then round the lower part of the guide roller 4 and over the upper portion of the sound drum, past the soundreading station and thence round the roller 10 to the sprocket 9. The guide roller 4 is so positioned that the length of the film between the roller 1 and the sound-reading station is the same in both cases.
Patent GB-141937-A (GB)
Title: An improved safety device for fowling pieces, rifles and the like
IPC: F41A17/20
Filed: 1919-05-21
Abstract: 141,937. Barnard, A. W. A. May 21. 1919. Breech actions, sliding breech-block; breech actions, drop-down barrel; safety appliances. - Relates to safety devices adapted to be operated, when the gun is brought to the shoulder, partly from a spring-controlled heel-plate and partly from a spring-controlled grip-lever in the neck of the stock, and consists in so adapting the two controlling-members that, while each may be operated independently of the other, both must be actuated to unlock the firing-mechanism. In the form shown in Fig. 1 as applied to a Winchester pearifle, the bolt 15 is normally obstructed by a spring-pressed bell-crank lever 14. When the rifle is raised to the shoulder, the lever 14 is displaced out of the path of the bolt by a rod 4 adapted simultaneously to be lifted by a grip-lever 8 acting through a rod 7, and to be urged forwards by the shoulder-plate 1. The trigger is also held normally at safe by an extension 11 of the grip-lever 8. A modification is described in which the hammer of a Winchester repeater is held and released in similar fashion. In the form shown in Fig. 3 as applied to a double-barrel hammer gun, the triggers are normally held partly by the engagement with the projections 23 of a pivoted member 21 displaceable by the rod 4, and independently by the engagement with the triggers 13 of a plate 24, slidable by the grip-lever 8. The pivoted member 21 may be replaced by a slidable member. In the form shown in Fig. 8, the rod 4 is adapted to be raised by the grip-lever 8, and moved rearwardly by the plate 1 to bring about engagement of the claws 32, 33 and consequential retraction of the spring-pressed bar 34 out of engagement with the triggers 13.
Patent GB-843483-A (GB)
Title: Method of working thermoplastic expanded plastic and articles made by the method
IPC: B26F3/08
Filed: 1956-12-03
Abstract: 843,483. Shaping plastic porous materials. AGRICOLA REG TRUST. Dec. 3, 1956 [Sept. 3, 1955], No. 12817/55. Class 87(2). [Also in Group VIII] A strip 1 of expanded, or porous, thermoplastic material is drawn by rollers 8, 9 along a table 2 past an electrically heated wire 3 and is thus divided into pieces 4, 5 which are separated by being drawn over a wedge-shaped member 6, through which coolant may be circulated at 7. The wire may be straight and disposed to divide the strip from side to side or corner to corner, or of any regular or irregular shape desired, e.g. Figs. 6 and 7. The wire may be arranged to shape the surface, as of a picture rail. The heated wire may be applied to material rotating on a turntable. A shaped strip or ring may be used instead of wire. The shape of the cutter may be changed during the process, or, with the turntable, the axis may be altered to result in more complex shapes. A heated wire, blade or other tool may be embodied in a hand tool. The temperature may be adjusted to seal off the pores of the material or to leave them open. Pillows, mattresses, seat squabs and upholstery may be shaped from expanded plastic material by the invention.
Patent GB-938601-A (GB)
Title: Improvements in impact wrenches and the like
IPC: B25B23/145
Filed: 1961-04-10
Abstract: 938,601. Screwing-up and unscrewing bolts &c. INGERSOLL-RAND CO. April 10, 1961 [May 6, 1960], No. 12889/61. Class 83 (3). A power operated impact wrench comprises an air motor 10, the spindle 18 of which intermittently drives a spindle 12 having a nut engaging socket 14. Air is supplied through a throttle valve 30 controlled by a trigger 32, to a passage 36, into a chamber 42, and thence to motor 10 via a valve 40, chamber 44, passage 46, and ports 132, 134. Valve 40 is biased into its open position by a spring 64, is exposed to atmosphere at 70, and is controlled by a spring-urged latch 72, axially and rotatably movable in bearings 74, 82. An arm 76, and a toothed dog 88, are non-rotatably mounted on latch 72, dog 88 being slidable on the latter, and a toothed wheel 84, engageable with dog 88, is rotatably mounted on a rod 78 keyed to spindle 12 at 80. Wheel 84 has a pin 110 which is urged into engagement with a stop 116, non-rotatably mounted on rod 78 by a torsion spring 118, and is rotated when a second pin 112 carried by a disc 114 fixed to rod 78, engages pin 110, as spindle 12 rotates. Motor 10 may be reversible, in which case a reversing valve 130 is provided, and valve 40, and therefore latch 72 can be rendered inoperative by a hand-operated spring-urged plunger 150 which engages a notch 148 in the valve, through an aperture 146 in a  bush 144. In operation the angular position of pin 112 is chosen by placing disc 114 on the hexagonal end of rod 78, and valve 30 is closed, thus allowing spring 64 to open valve 40. Spring 94 pushes latch 72 to the right to engage valve 40, and the pressure of any air in chambers 42, 44, will be equalized by a bleed hole 166. Lever 32 is depressed to open valve 30, thus moving valve 40 inwardly to push against arm 76, and rotate the latter, bringing tooth 92 on dog 88, into engagement with teeth 86 on member 84, which has been rotated by spring 118 until pin 110 abuts stop 116. Motor 10 rotates spindle 12 and rod 78 until pin 112 contacts pin 110, whereupon the torque in rod 78 overcomes spring 94, and latch 72 moves axially to release valve 40, which then shuts off the air supply to motor 10, and the latter stops. A spring-urged plunger 98 presses against arm 76 on latch 72, and rotates the arm to disengage dog 88 from member 84, whereupon spring 118 rotates member 84 until pin 119 hits stop 116, ready for commencement of another cycle. It is stated that the wrench may be driven by an electric motor.
Patent GB-1219328-A (GB)
Title: Improved hydrocracking process utilizing mixed nonnoble metal catalyst
Inventor: BUCHMANN FRED J
IPC: C10G47/20
Filed: 1968-03-18
Abstract: 1,219,328. Zeolites. ESSO RESEARCH & ENG. CO. 18 March, 1968 [3 April, 1967; 24 May, 1967], No. 12917/68. Heading C1A. [Also in Divisions B1 and C5] A catalyst for hydrocracking petroleum products consists of the hydrogen or hydrogenprecursor form of a crystalline aluminosilicate zeolite having uniform pore diameters, the crystal structure of a faujasite and a silica to alumina mol. ratio exceeding 3 plus 1 to 8% by weight of nickel and 3 to 18% of tungsten (calculated as metal) which may be sulphided. The nickel may be introduced by base exchange or by impregnation, the catalyst then being treated with ammonium tungstate to introduce the tungsten. The catalyst may be baseexchanged with rare earths.
Patent GB-386508-A (GB)
Title: Improvements in lamps
IPC: F21V1/00
Filed: 1932-07-04
Abstract: 386,508. Signs. GREENFIELD, F. W., 9, George Street, Manchester Square, London. July 4, 1932, No. 12970. [Class 3 (ii).] In a lamp for use as a display sign, one or more light sources are surrounded for a portion or the whole of their circumference by a plurality of radiating vanes which are mounted in and between independent upper and lower supports and have their outer edges exposed and unenclosed by a lantern casing or any other surrounding framework. The vanes may be made of glass, porcelain, parchment, or other transparent or translucent material, in which case part of the light is transmitted through the body of the vanes, or they may be made of reflecting metal or other opaque material ; they may be of uniform or non-uniform shape and size, and they may be so shaped as to simulate a basket of flowers. The light source may be supported from above or below, may be enclosed in a tubular glass casing, and preferably comprises an electric incandescent filament bulb or a neon or other high tension discharge tube. Any part of the light source not surrounded by vanes may be fitted with a reflector. In the form shown, the vanes 1 are provided with painted or other decorations 1a, lettering, or the like, and are supported at the top in the inverted channelled arms 4 of a cap 3 mounted on an elongated filament bulb 2, and at the bottom in the slotted arms 6 of an end-piece 5 fitted around the bulb. Other forms of upper and lower supports are described and illustrated in the Specification.
Patent GB-365448-A (GB)
Title: Improvements relating to couplings for colliery tubs or like wagons
IPC: B61G1/36
Filed: 1931-05-04
Abstract: 365,448. Non-automatic couplings for railway vehicles. LAWSON, J., Comely Bank, Main Street, Kelty, Fifeshire. May 4, 1931, No. 13065. [Class 103 (v).] In a chain and hook coupling for colliery tubs and like wagons the end links B of the chain are almost closed together at the centre and held against opening out by means of a surrounding welded ring C, while the draw-hooks A are formed with flattened ends so that the links cannot be engaged with or disengaged from the hooks without first being swung through an angle of about 90‹ to a position transverse to the track.
Patent GB-1535926-A (GB)
Title: Method for the stability of seeds
IPC: A01C1/00
Filed: 1976-03-30
Abstract: 1535926 Treating seeds W J SMITH 30 March 1976 [1 April 1975] 13137/75 Headings A2D and A2Q A method of improving the stability of seeds comprises the step of drying the seeds at a first temperature of 50 to 60‹C and under a vacuum of at least 100 microns Hg for a time sufficient to render the seeds stable to exposure to a second temperature 10‹C higher than the first temperature without substantially loss of viability. The drying step may be repeated at the second temperature to render the seeds stable to exposure to a third temperature 10‹C higher than the second temperature. The method is applicable to the treatment of radish, cucumber, lettuce, clover or cabbage seeds.
Patent GB-627136-A (GB)
Title: Improved manufacture of organo-siloxane polymers
IPC: C08G77/06
Filed: 1947-05-15
Abstract: A mixture of approximately one molecular proportion of an ester of orthosilicic acid and four molecular proportions of a hydrolysable triorgano-silane is hydrolysed to give an organo-siloxane polymer having less than 41 carbon atoms and of the general formula: <FORM:0627136/IV (a)/1> where R, R1 and R11 are hydrocarbon radicals and n is a whole number.  An acid or alkaline catalyst may be used. The products are liquid or solid and are soluble in organic solvents such as hydrocarbons, chlorinated hydrocarbons, aromatic solvents; the liquid may be used as hydraulic fluids or heat transfer media. In examples: (1) ethyl orthosilicate and trimethyl ethoxysilane were hydrolysed and distilled to give liquid [(CH3)3SiO]4Si-as well as (CH3)6Si2O-, and a residue in which n of the above formula was greater than 1; (2) dimethylphenyl ethoxysilane and tetraethyl orthosilicate, and (3) ethyl dimethyl chlorosilane and tetraethyl orthosilicate, were hydrolysed and distilled to give corresponding polymers.ALSO:A mixture of approximately one molecular proportion of an ester of orthosilicic acid and four molecular proportions of a hydrolyzable triorgano-silane is hydrolysed to give an organo-siloxane polymer having less than 41 carbon atoms and of the general formula <FORM:0627136/IV (b)/1> where R, R1 and R11 are hydrocarbon radicals and n is a whole number.  An acid or alkaline catalyst may be used.  In examples: (1) ethyl orthosilicate and trimethyl ethoxysilane were hydrolysed and distilled to give liquid [(CH3)3SiO]4Sias well as (CH3)6Si2O-, and a residue in which n of the above formula was greater than 1; (2) dimethylphenyl ethoxysilane and tetraethyl orthosilicate, and (3) ethyl dimethyl chlorosilane and tetraethyl orthosilicate, were hydrolysed and distilled to give corresponding polymers.
Patent GB-132571-A (GB)
IPC: C01B21/26
Abstract: 132,571. Maxted, E. B., and Smith, T. A. Aug. 2, 1918. Catalytic apparatus; nitrogen oxides, catalytic production of, by combustion of ammonia. -Ammonia is oxidized in an annular reaction space between two iron or other base metal concentric tubes, pre. ferably with a spiral baffle E. The outer tube may be heatinsulated by a wrapping C, for instance of asbestos. The gases are admitted at A and issue at B, heat being applied from the inside of the inner tube D or from the outside of the outer tube. The surfaces of the reaction space may carry a promoter.
Patent GB-618518-A (GB)
Title: Apparatus for mixing and extruding plastic materials
IPC: B29C48/425
Filed: 1946-05-02
Abstract: 618,518. Meshing-screw pumps. SOC. P.A. LAVORAZIONE MATERIE PLASTICHE. May 2, 1946, No. 13326. Convention date, Sept. 18, 1942. [Class 110 (ii)] [Also in Groups II and V] Apparatus for mixing and extruding plastic materials comprises a chamber 1 in which the materials are mixed and fed to an extrusion die by a central rotating screw 3 meshing with four circularly disposed rotating screws 4 adapted to rotate in the same direction as the screw 3. The screws may decrease in pitch from the feed towards the extrusion end and may be conical with their smaller diameters arranged at the outlet end. Alternatively, the screws may be divided into sections, the pitch of each section being lower than that of the preceding section and the number of threads increasing from one section to the next. The screws 4 may be mounted in cylindrical or conical recesses formed in the wall of the chamber 1.
Patent GB-1000782-A (GB)
Title: Pharmaceutical compositions containing alkyl derivatives of phlorophenone
Inventor: LAFON LOUIS
IPC: C07C43/205
Filed: 1961-04-13
Abstract: Trimethoxyisobutyrophenone is prepared by reacting trimethoxybenzene and isobutyronitrile and hydrolysing the imine. Similarly are prepared trimethoxy-aceto- and propiophenones.ALSO:Pharmaceutical compositions comprise compounds of the formula <FORM:1000782/A5-A6/1> (where R and R1 represent the same or different alkyl radicals) and a solid pharmaceutical carrier.  Examples are given of tablets, capsules, pills and suppositories containing trimethoxy-aceto-propio-and -isobutyro-phenones, which have antispasmodic activity.  Trimethoxypropiophenone also shows some antiserotonin action and potentiates the hypnotic effect of hexobarbital.
Patent GB-804487-A (GB)
Title: Electron tube grid winding machine
IPC: H01J19/00
Filed: 1957-04-26
Abstract: 804,487. Winding grid electrodes; welding; jointing by forging. STANDARD TELEPHONES & CABLES, Ltd. April 26, 1957 [May 2, 1956], No. 13366/57. Classes 83 (2) and 83 (4). A machine for winding grid electrodes of electron discharge tubes includes a rotatable shaft, a mandrel mounted to slide along said shaft, means for supporting lateral grid supports around said mandrel, and means for traversing said mandrel along said shaft simultaneously as said shaft is rotated to wind grid wire over said grid supports. A shaft 1 centred in and rotated by a lathe has keyed thereto a copper disc mandrel 4 which is moved longitudinally of the shaft, as the latter rotates, by a yoke 12 secured to the lathe compound slide. Grid support wires 18, around which grid wire is to be wound in a helix, are clamped at one end in grooves in a disc 17 secured to the shaft 1, are supported in grooves in a main portion 5, Fig. 4, and in slots 9, Fig. 3, not shown, of a peripheral flange 6 of the mandrel 4, and pass at their other ends through holes in a disc 22 on the shaft 1. The mandrel 4 fits into, and is free to rotate within, a grooved copper electrode ring 11. A spool of grid wire is mounted to move, with the mandrel 4, longitudinally of the support-wires 18 so that wire is wound therefrom on to the support wires 18 where they are supported by the mandrel 4. A welding electrode 16 is also mounted so as to move longitudinally of the wires 18 with the mandrel 4 and is operated to weld the helix grid wire at each point it crosses a support wire 18 and while it is supported by the mandrel 4, the electrode ring 11 having a terminal 15 connected in the welding circuit and grounded. Alternatively the electrode ring 11 may be dispensed with and the electrode 16 replaced by a swaging-tool 24, Fig. 7, which lays over the edges of notches 23, cut in the support wires 18, on to the grid wire helix. The mandrel 4 in this case is of hardened steel.
Patent GB-310814-A (GB)
Title: Method of and apparatus for filling bags
IPC: B65B1/18
Filed: 1928-01-31
Abstract: 310,814. Bates Valve Bag Corporation, (Assignees of Cornell, J. E., and Verwys, J.). Aug. 5, 1927, [Convention date]. Divided on 295,000. Filling materials into bags.-In an apparatus for filling valve bags, the bag 15 is placed with its valve opening 14 on the filling tube 13 of a hopper 11, and with its lower end not quite reaching to cross-bars 39, 46 mounted on a jigger frame 35. A clutch handle 83 is operated to place the main driving shaft 79 in gear with a counter shaft 26, from which a propeller worm 21 is rotated, by gearing 28, 29, 23, to deliver a charge into the bag. At the same time, the frame 35 is raised to support the bag, the effective length of which is shortened by bulging due to the charge. The frame 35 is pivoted at 30, and is raised by the action of a cam 56 on a roller 54 in the forked head of a link 53 adjustably pivoted at 57. During the filling operation, the bag is held on the nozzle by a clamp 16, pivoted at 17, and held down in position by a spring 20. When the bag is full, the cam 56 has completed a revolution, and a lug 64 thereon depresses an arm 63 and operates links 78, 73 to lift the clamp from the bag, and links 72, 69, 66 to cause an ejector 67 to remove the bag from the machine. The jigging frame is lowered by the cam 56, and an extension thereon operates a rod 93 to withdraw a catch 90 and allow the clutch handle to return to neutral under the influence of leaf springs, thus stopping the rotation of shaft 26, and consequently that of the worm 21. The charge delivery device is actuated by the engagement of the clutch handle with a rod 93. Two. filling nozzles may be arranged) side by side to be actuated alternately, a gate in the charge delivery device being turned to one side or the other by the clutch 83. In a modified form, a number of filling devices are mounted on a rotary spider, and are adapted to arrive in turn beneath one ormore charge delivery devices. The valve aperture of the filled bag may be closed by paste.
Patent GB-134563-A (GB)
IPC: C08G8/28
Abstract: 134,563. Bindley, W. T. Robinson-, Weller, A. W., and Dulcken, E. Feb. 27, 1918. Phenol-formaldchyde condensation products. - Resinous products are obtained by the condensation of formaldehyde, or substances yielding it, with m - or p-cresol, in the presence of mineral acid, e.g. hydrochloric acid. The process may be carried out by adding a mixture of formaldehyde and hydrochloric acid to the cresol, heating to about 80‹ C., separating the viscous product, blowing steam through it to remove free cresol and acid, and finally heating in vacuo; the product may be toughened by heating it under pressure. The product from m-cresol is soluble in spirit, while that from p-cresol is soluble in oil