baber/WOPTO huggingface dataset:
Patent GB-1042735-A (GB)
Title: Improvements in hitch mechanisms for tractors
IPC: A01B59/06
Filed: 1963-05-20
Abstract: 1,042,735. Tractor power lift mechanisms. MASSEY-FERGUSON Inc. May 20, 1963 [May 21, 1962], No. 19940/63. Heading A1P. A quick-hitch mechanism for use on the three-opint linkage of a tractor power lift mechanism comprises an A-frame 35 to space the links to correspond with pins 26, 29 on an implement 25, hook assemblies 40 on the ends of the draft links each hook assembly consisting of a hook on the link and a movable keeper 45, and a member 75 pivoted on the upper link and being connected by links 80 with the keepers 45. In operation the linkage is aligned with the implement so that the pins 26 engage in the keepers 45. The linkage is then moved upwardly whereby the keepers 45 rotate to guide the pins 26 into the hooks and simultaneously the upper member 75 is drawn down by links 80 into engagement with the upper pin 29. The keepers 45 are held in position by a spring biased latch pin which can be disengaged by the operator pulling on a cord 98. The links 80 incorporate springs which allow for elongation of the links to provide for different spacings between the pins 26, 29.
Patent GB-820078-A (GB)
Title: Improvements in and relating to photo-electric cells
Inventor: JENKINS JAMES ARCHIBALD
IPC: H01L31/08
Filed: 1952-08-07
Abstract: Lead sulphide, lead telluride or lead selenide forming the photo-sensitive layer of photoelectric cells is produced by chemical reaction on heating finely divided substances (e.g. lead and sulphur) in an inert atmosphere.  Other mixtures which may be heated are lead monoxide and sulphur, lead carbonate and sulphur, lead and selenium, and lead and tellurium.  Nitrogen containing less than 10 volumes of oxygen per million provides a suitable atmosphere.  Specifications 820,077, [Group XXXVI], 820,079 and 820,080, [Group XXXVI], are referred to.
Patent GB-1435507-A (GB)
Title: Snow sleds
IPC: B62B13/08
Filed: 1972-04-29
Abstract: 1435507 Sledges B J S WATTS 26 July 1973 [29 April 1972] 20026/72 Heading B7B A sledge has a main frame 1 of tubular steel bar 2 bent to form a bight 2a at the front end and curved at the rear end to form bowed portions 5 extending into runners 6 which independently support the sledge. A pivoted bogie having a pivot pin 10 has similarly bowed portions 12 extending into runners 13. The sledge has transverse struts 3, 16, 17 and is steered by a prone rider gripping points A or by a sitting rider operating removable pedals, not shown. Alternatively, handles, a tiller or joystick may be provided. Brakes which dig into the surface of the snow may also be provided. The frame and runners may be circular, oval, square or other polygonal section tubing. The tubing may be sheathed in aluminium, stainless steel or plastics tubing.
Patent GB-586777-A (GB)
Title: Concentrator and method of concentration
IPC: B03B5/62
Filed: 1944-10-17
Abstract: 586,777. Washing ores. HUMPHREYS, I. B. Oct. 17, 1944, No. 20061. [Class 82 (ii)] A method of concentrating ores comprises flowing a liquid suspension of the ore down a helical channel and separately collecting at points in the stream particles which have like specific gravity and have assumed like positions in the stream, any uncollected particles being discharged at the end of the channel. As shown, the apparatus comprises a framework A supporting a helical channel B which is made up from sections 15 each having one aperture 20 from which concentrate is drawn off by pipes 32, 33. The cross section of the channel is as shown in Fig. 2, the liquid assuming the shape shown by the dotted line 52. The heaviest particles collect at the shallow inner edge 54 and are urged towards the draw off aperture 20, which has an adjustable plug 57 arranged to collect any desired portion of the shallow edge, by wash water supplied by a pipe C and obtained from the deep edge of the stream or a separate wash water trough above, Fig. 15 (not shown), or below, Fig. 3 (not shown), the main channel. In a modification, Fig. 6 (not shown), wash water is supplied by an L-section blade. In a further modification, Figs. 11, 12, 13 and 15 (not shown), the inner edge of the channel is modified by flattening from a point immediately before one aperture to a point before the next aperture. By careful selection of the apertures used for drawing off, a classification of each constituent removed may be obtained.
Patent GB-1360121-A (GB)
Title: Flame retardant glass reinforced polyester resins
IPC: C08L67/02
Filed: 1972-05-01
Abstract: 1360121 Flame retardant polyester composition GENERAL ELECTRIC CO 1 May 1972 [5 May 1971] 20062/72 Heading C3R A flame retardant, glass reinforced thermoplastic composition comprises (a) a high molecular weight linear polyester resin, (b) glass fibre, in an amount of from 5 to 90% by weight based on the weight of resin and fibre, (c) a flameretardant additive in a minor proportion based on the composition but in an amount at least sufficient to render the polyester non-burning or self-extinguishing, and (d) polytetrafluoroethylene in a minor proportion based on the composition but in an amount at least sufficient to render the polyester non-dripping. The composition preferably comprises 0À5 to 50% by weight of the flame-retardant additive and 0À5 to 2À5% by weight of polytetrafluoroethylene, both percentages based on the resin. The glass fibre is preferably free of sizing and of a length between 0À000005 inches and 0À125 inches and the polytetrafluoroethylene is preferably of average particle size of from 0À3 to 0À7 mm. The polyester resin is preferably polyethylene terephthalate or poly-(1,4-butylene terephthalate). Many flame-retardant additives are given, the following being used either singly or in admixture in the examples: antimony trioxide, hexabromobenzene: triphenyl phosphate, triphenyl antimony, triphenylphosphine oxide, a brominated hydrocarbon, a highly chlorinated diphenyl, red phosphorus, and cresyldiphenyl phosphate.
Patent GB-302304-A (GB)
Title: Reamer for rotary well drilling tools
IPC: E21B10/00
Filed: 1927-09-14
Abstract: 302,304. Kennedye, C. B. Sept. 14, 1927. Divided on 301,142. Borehole apparatus. - A rotary well-drilling tool is provided with reamers 9 with one longitudinal edge provided with relatively thin spaced edges 10. The reamer is of greater length than width, and greater width than thickness, and has a depending cutting blade 2<1> which may be reduced in width and thickness. Specification 301,142 is referred to.
Patent GB-425519-A (GB)
Title: Improvements in and relating to driving mechanism for sound film reproducing apparatus and the like
IPC: G03B31/02
Filed: 1934-07-09
Abstract: 425,519. Sound-film feeding-devices. ZEISS IKON AKT.-GES., 72, Schandauer Strasse, Dresden, Germany. July 9, 1934, No. 20133. Convention date, July 19, 1933. [Class 40 (ii)] Uniformity of movement of a sound-film past the point 11 of sound reproduction or recording is effected by providing in the feed-mechanism two flywheels or the like, one of which, 13, is mounted on the shaft 12 of a gear wheel in the train between a motor-driven shaft 2 and a feed-sprocket 10, whilst the other flywheel &c. 15 is on the shaft of a roller 14 over which the film passes, and which is driven thereby. The flywheel 13 is designed to eliminate vibrations caused by the gear-wheels of the driving mechanism, and the -flywheel 15 damps out vibrations due to irregularities in the feeding action of the sprocket 10.
Patent GB-743526-A (GB)
Title: Improvements relating to a method and means of securing pipes together
IPC: F16L13/08
Filed: 1952-08-11
Abstract: 743,526. Soldering; tube expanders. FAITHFULL, A. E., and FAITHFULL, R. J. Aug. 11, 1953 [Aug. 11, 1952], No. 20167/52. Class 83 (4). In a method of joining pipes 1, 2, Fig. 1, of the same diameter, the end of the pipe 1 is expanded by the use of the stepped punch shown in Fig. 3 to form a socket 3 having a tapered shoulder 6 and providing an annular capillary recess 4 when the pipe 2 is fitted into that socket to abut the shoulder. The interfitted portions of the pipes are cleaned and treated with soldering flux and heated by blow lamp, and, while hot tinman's solder is applied to the mouth of the recess until the solder runs along the recess. The joint is then allowed to cool. There may be a protuberant shoulder 7 of solder. The punch comprises four portions of decreasing diameter, namely a driving portion 8 having a diameter greater than that of the socket, a socket-forming portion 9, a conical base-forming portion 10, and a pipe-aligning portion 11 having a diameter equal to that of the internal diameter of the pipe and terminating in a rounded or chamfered leading edge 12.
Patent GB-476067-A (GB)
Title: Improvements in or relating to valve amplifiers
IPC: H03F3/28
Filed: 1936-07-22
Abstract: 476,067. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and ESPLEY, D. C. July 22, 1936, Nos. 20306/36 and 15891/37. [Class 40 (v)] In a television amplifier designed to amplify the D.C. component and to provide two outputs of opposite phase to give negative and positive pictures respectively, a pair of valves V1, V2 is connected up as shown in Fig. 1 (15891/37), and in order that the sum of the anode currents I1, I2 may remain constant to avoid " flutter " the following relationship is satisfied g2.R2.R3=(R1+R2) (1+g2r2), g2 being the mutual conductance of V2 and the remaining terms being the values of the correspondingly lettered elements in the drawing. In a modification shown by Fig. 1 (20306/36), in which a common resistance 8 replaces the resistances r1, r2, the necessary relationship is g2.R2.R3 =R1 +R2. Condensers 10 .. 12 and resistances 14, 15 are for decoupling. The input capacity C2 of the valve V2 may in both cases be compensated by shunting R1 by a capacity C1 such that R1.C1=R2.C2 or by providing an inductance. L in series with R2 such that L=.45 C2R2<2>. In a further modification, R4=O and accordingly only one output is provided. Specification 464,553 is referred to.
Patent GB-757568-A (GB)
Title: Continuous casting of light metal ingots
Inventor: ZEIGLER PAUL PHILIP
IPC: B22D11/14
Filed: 1954-07-12
Abstract: Ingots are continuously cast from aluminium alloys of the following groups, compositions, constituents expressed as percentages: (a) 3,9-5,0 Cu, 1,0 Fe max., 0,5-1,2 Si, 0,4-1,2 Mn, 0,2-0,8 Mg, 0,25 Zn max., 0,1 Cr max., 0,15 Ti max., balance Al.  (b) 3,5-4,5 Cu, 1,0 Fe max., 0,8 Si max., 0,4-1,0 Mn, 0,2-0,8 Mg, 0,1 Zn max., 0,1 Cr max., balance Al.  (c) 3,8-4,9 Cu, 0,5 Fe max., 0,5 Si max, 0,3-0,9 Mn, 1,2-1,8 Mg, 0,1 Zn max., 0,1 Cr max, balance Al.  (d) 1,2-2,0 Cu, 0,7 Fe max., 0,5 Si max., 0,3 Mn max., 2,1-2,9 Mg, 5,1-6,1 Zn, 0,18-0,4 Cr, 0,2 Ti max., balance Al.  Specific examples of alloys in group (d) above contain (1) 1,6 Cu, 0,1 Si, 2,5 Mg, 0,4 Fe, 5,8 Zn, 0,05 Ti, (2) 1,75 Cu, 0,15 Si, 2,35 Mg, 0,18 Fe, 5,8 Zn, 0,21 Cr, 0,06 Ti, and (3) 1,6 Cu, 0,1 Si, 2,5 Mg, 0,25 Fe, 5,6 Zn and 0,05 Ti.
Patent GB-331391-A (GB)
Title: Coin-freed vending machine
IPC: G07F11/58
Filed: 1929-07-03
Abstract: 331,391. Wistoft, S. July 3, 1929. Delivery of articles stored in endless bands.-- An endless band consisting of V-shaped receptacles 9 connected by hinge pins 7 engaging notched wheels 4, 5 delivers articles to an opening 10 in the casing 1 on the shaft 2 of the wheel 4 being turned after the insertion of a coin in a slot 23. Coin action, mechanical-connection.-The shaft 2 is positioned by the head of a spring-pressed lever 16 engaging a star wheel 15, rotation in one direction being normally prevented by a pawl 12 engaging a ratchet wheel 11 and in the other direction by a pawl 14 engaging a ratchet wheel 13. A coin inserted in the machine passes through a testing device 24 into one of a number of recesses 20 in a wheel 19 secured to the shaft 2 adjacent the wheel 4. The shaft 2 can now be turned one division, the coin preventing the pawl 12 from engaging one gap 26 in the ratchet wheel 11. As the wheel 19 turns a coin from a previous operation drops in the collecting box 28.
Patent GB-1398831-A (GB)
Title: Activated red mud and its preparing method
IPC: C02F1/52
Filed: 1973-04-30
Abstract: 1398831 Activated red mud SHING-JEN SHIAO 30 April 1973 [12 May 1972] 20490/73 Heading C1A Activated red mud suitable for use as an adsorbent, catalyst, clarification agent, desulphurization agent and ion-exchange agent is made from red mud of the Bayr process by a method comprising digesting red mud and dispersing metallic hydroxide compound particles in the compound of metallic hydroxides and silica gel, the method comprising: (a) digesting the red mud with acid, (b) adjusting the pH of the acid digested mixture comprising the sludge product with alkali to a pH value at which a gelled product is formed, (c) separating and washing the gelled product, and (d) heat-treating the resulting active compound, the method being further characterized in that the product of step (a) is treated by separating a part of its solution and/or the product of step (c) is treated by a process of shape making, prior to treatment in accordance with the next succeeding step. In step (a) the acid may be HCl, H 2 SO 4 , HNO 3 , HF, H 3 PO 4 , H 2 SO 3 , H 2 CO 3 , CH 3 COOH or C 2 H 2 (COOH) 2  and the mole ratio of acid to sodium contained in red mud is suitably greater than one. In step (b) the pH can be adjusted with NH 3 , NH 4 OH, (NH 4 ) 2 CO 3  and (NH 2 ) 2 CO, and Fe(OH) 3  and Al(OH) 3  are precipitated. The product from step (c) can be treated, prior to step (d) by adding gelatin, partially drying, granulating, further drying, and crushing some of the product. Crushed and uncrushed material are then mixed with stearic acid, magnesium or aluminium stearate, iron oxide and/or alumina and moulded.
Patent GB-1473916-A (GB)
Title: Catalysts and their use for the production of polyurethanes
IPC: C08G18/18
Filed: 1974-05-09
Abstract: 1473916 Aliphatic amides and urethanes containing tertiary amino and ether groups BAYER AG 9 May 1974 [12 May 1973] 20508/74 Heading C2C [Also in Division C3] Novel compounds, useful in the manufacture of polyurethanes have the formula where R is an alkyl group. The compounds of Formulae A, B and C are made by the Michael addition of an aminoalcohol to an N-substituted acrylamide followed by the addition of paraformaldehyde and a dialkylamine and further reaction. The compounds of Formula D may be made by reacting a compound of formula with formaldehyde and a dialkylamine. The compounds of Formula E may be made by reacting a compound of formula with paraformaldehyde and a dialkylamine.
Patent GB-1509674-A (GB)
Title: Loose leaf binders
IPC: B42F13/02
Filed: 1976-05-18
Abstract: 1509674 Loose-leaf binders G JAHN 18 May 1976 [25 Nov 1975] 20541/76 Heading B6E A loose-leaf binder made from a single sheet of plastics material has the prongs 36, which are passed through the loose-leaves, cut from one of the covers and passed through apertures 35 in the spine to form rings, the prongs 36 being provided with locking tongues which are inserted in the slots from which the prongs were cut.
Patent GB-381626-A (GB)
Title: Improvements in or relating to the steering of vehicles
IPC: B62D7/16
Filed: 1931-07-18
Abstract: 381,626. Motor vehicles. HAGENBURG, O. H. G., 34, Elisabethenstrasse, and HOFFMANN, G., 42, Viktoriastrasse, both in Darmstadt, Germany. July 18, 1931, No. 20613. Addition to 381,624. [Classes 79 (iv) and 79 (v).] The radius-rod framework described in the parent Specification is so arranged that the pivot of the radius rod on the chassis frame and the virtual pivot on the frame about which the drag-link oscillates are not closely adjacent but lie in a horizontal line perpendicular to the drag-link when the steering wheels are in the straight-ahead position. In the construction shown the drag-link f is parallel to the axle a, the virtual pivot of the link being at g, and the radius rod d is pivoted to the frame at h, the line joining the pivots g, h being perpendicular to the drag-link. The radius rod is so shaped as to clear the engine sump n, and one arm is provided near its neutral axis with holes p through which the drag-link f and track rod m can pass freely. The suspension springs bare connected by slides or shackles c at both ends to the frame. Modifications are described in which (1) the drag-link is arranged longitudinally of the vehicle and the radius rod is symmetrical in plan and pivoted on the central longitudinal axis of the vehicle, the line joining the pivots g, h being parallel to the axle, and (2) the drag-link is arranged diagonally of the vehicle, the line joining the pivots g, h being still perpendicular to the drag-link.
Patent GB-204178-A (GB)
Title: Improvements in means for securing door knobs and the like in relation to their spindles
IPC: E05B3/00
Filed: 1922-07-28
Abstract: 204,178. Hulse, T. July 28, 1922. Knobs, attaching.- A radial projection e on a washer E screwing on the spindle D enters a bayonet slot d' on a flange b of the knob B which fits and slides without rotating on the spindle, and the parts are retained in engagement by a screw screwing into the hole e' in the washer and lying in the longitudinal part of the bayonet slot. In a modification, the bayonet slot is on the washer and the projection e on the knob flange. If a rose is used covering the bayonet slot, a hole is provided in the rose for inserting the screw, and can be brought opposite to the screw after release and rotation of the rose.
Patent GB-1010175-A (GB)
Title: Process for preparing esters
IPC: C07F9/94
Filed: 1962-05-29
Abstract: Polyesterification reactions are carried out in the presence, as a catalyst, of an arsenic or bismuth salt of an organic acid. The catalyst may be an arsenic or bismuth salt of 2-ethylhexoic, acetic, tallic, pelargonic, oleic, lauric, phthalic, oxalic, tetrachlorobenzoic, stearic, propionic, sebacic or azelaic acid, and is preferably used in an amount of 0.01 to 1% by weight of the reactants.  The invention is illustrated by the polyesterification reaction of neopentyl glycol with adipic acid in the presence of bismuth trioleate.ALSO:Esterification reactions comprising reacting an organic hydroxy compound with an organic acid, an organic anhydride or a half ester of a dibasic organic acid, and transesterification reactions comprising reacting an ester of an organic acid and a highly volatile alcohol with a less volatile alcohol, are carried out in the presence, as a catalyst, of an arsenic or bismuth salt of an organic acid.  The catalyst may be an arsenic or bismuth salt of 2-ethylhexoic, acetic, tallic, pelargonic, oleic, lauric, phthalic, oxalic, stearic, tetrachlorobenzoic, propionic, sebacic or azelaic acid, and is preferably used in an amount of 0.01 to 1% by weight of the reactants. Organic hydroxy compounds are, for example, butyl alcohols, amyl alcohols, isooctyl alcohols, ethylene glycol, propylene glycols, butylene glycols, neopentyl glycol trimethylol propane, sorbitol and mannitol. Organic acids are, for example, adipic, butyric, sebacic, maleic, tetrachlorophthalic, phthalic, cyclohexane carboxylic, 1,4-cyclohexane dicarboxylic, terephthalic, benzoic and paramethyl benzoic acids.
Patent GB-1146409-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H19/00
Filed: 1967-05-04
Abstract: 1,146,409. Electric battery lamps. SANKO KINZOKU KOGYO K.K. 4 May, 1967 [13 Dec., 1966], No. 20668/67. Heading F4R. [Also in Division H1] A switch for a portable electric appliance such as a torch comprises a wheel-shaped hand operable insulating switch member 6 rotatably supported and having alternate first and second notches 7, 8, an elastic contact-piece 10, an insulating supporting block 11 for securing contact-piece 10, and a fixed contact 13. The contacts 10, 13 are closed when the projection 12 on contact-piece 10 engages deeper notches 7 and held open when projection 12 engages shallower notches 8. Moving contact 10 is of a material such as phosphor bronze.
Patent GB-472350-A (GB)
Title: Improvements in mechanical lead pencil
IPC: B43K21/08
Filed: 1936-07-27
Abstract: 472,350. Pencil holders; erasers. EAGLE PENCIL CO. July 27, 1936, No. 20779. Convention date, Aug. 13, 1935. [Class 146 (iii)] In a mechanical lead pencil of the type in which a lead tube and propeller wire have lateral extensions adapted to engage a helical groove in the pencil casing, so as to produce unison movement and finally to expel the lead from the tube, both propelling and ejecting movements are actuated from a ferrule rotatably mounted on the rear end of the pencil, and which slidably carries an eraser, which is adapted to be expelled therefrom by rearward movement of the lead propeller wire, which first abuts against the eraser or its casing and then, the movement continuing, expels it from the ferrule. The pencil is moulded, preferably from a phenol-formaldehyde condensation product, with an internal helix 11 with which engage a loop-shaped lug 19, Figs. 2, 3, on a propeller 18 and a roller 21 on a lead-holding tube 20. The lug 19 and roller 21 project through a slot 14 in a tube 13. The tube 13 is split to form two straps 17 which are bowed outwards to grip the track 11 frictionally, and at the rear end is split into two strips 24 which are outwardly and reversely bent and lie in a reduced portion 26 of the case. An eraserholding ferrule 15 is provided with longitudinal flutings 29, Fig. 4, in two of which lie the strips 24. The ferrule is indented at 30 and the strips 24 at 28 so as to engage an annular depression 27 on the pencil case. The movement of the ferrule and tube 13 longitudinally of the pencil is thus prevented, but the tube 13 and ferrule 15 are firmly keyed together for rotation of the one by the other. The eraser is gripped between tongues 35 of a sheet-metal cup and may be retained in several positions by the engagement of ridges 36 on the tongues 35 with beads 31, 32, 33 in the ferrule. When the pusher 18 is fully retracted it engages and ejects the cup 34 and eraser. The metal tip 12 is formed with a spindle-shaped shank 42 around which is moulded the material 43 of the case so that the tip is firmly gripped and there is no substantial reduction in the cross-section of the case. A collar 29 on the rear end of the tube 13 has a tongue projecting into the slot 14 to prevent the feeding of the propeller out of the helix.
Patent GB-1058573-A (GB)
Title: A method and means for prestressing a concrete structure
IPC: E04G21/12
Filed: 1964-05-20
Abstract: 1,058,573. Post-tensioning concrete. H. O. S. HANSSEN. May 20, 1964, No. 20904/64. Heading E1W.  A concrete article 14 is post-tensioned by means of a system comprising an annular anchor plate 18, a perforated thrust plate 13, inner and outer spacing cylinders 8 and 11, a female cone 3, a conical iron shell 5, a male cone 7, and a bolt 1 for connecting the system to a jack (not shown). The cone 3 is pulled out by the jack, pulling cylinder 8 and hence cylinder 11 with it, and cylinder 11 is then screwed back into contact with the thrust plate 13, which is pressed against the anchor plate, deforming a perforated rubber packing 20. The pre-formed duct 15 is grouted up via a tube 16, and the cable comprising twelve rods 6, is burnt off.
Patent GB-966810-A (GB)
Title: Improvements in or relating to flowmeters
IPC: G01F1/12
Filed: 1962-05-31
Abstract: 966,810. Rotary meters. SUN OIL CO. May 31, 1962 [June 30, 1961], No. 21100/62. Heading F1F. A fluid flowmeter of the turbine type comprises vanes 30 mounted upstream of the rotor 18 (Fig. 1) and means for twisting the vanes to alter the calibration of the meter. The vanes are mounted at their downstream end in axial slots in a ring 29 and in slots 34 in the upstream rotor bearing member 33. The upstream ends of the vanes are similarly fixed in a ring 43, held by screws 46 to the meter housing 11, and in a cap member 38. The vanes are twisted by rotating the ring 29, this being done by rotating a screw 51 (Fig. 3) mounted transversely to the direction of flow. At one end of the screw is a flange 53 which engages a slot 47 in the ring, so that rotation of the screw causes the flange 53 to move tangentially of the ring 29, and to rotate the ring, twisting the blades.