baber/WOPTO huggingface dataset:
Patent GB-607113-A (GB)
Title: Improvements relating to the manufacture of halogenated carboxylic acids
IPC: C07C59/68
Filed: 1946-03-13
Abstract: Mono-, di- or tri-nuclear chlorinated phenoxyalkyl carboxylic acids are prepared by chlorinating the corresponding carboxylic acid in a solvent at an elevated temperature.  Specified solvents are glacial acetic acid and tetrachlorethylene.  The degree of substitution is controlled by using substantially the theoretical amount of chlorine to produce the required compound.  The progress of the chlorination is preferably followed by determination of the amount of evolved hydrochloric acid.  In examples: (1) chlorine is passed into a solution of phenoxyacetic acid in glacial acetic acid giving 4-chlorophenoxyacetic acid; (2) 2 : 4-dichlorophenoxyacetic acid is similarly prepared; (3) 2 : 4 : 6-trichlorophenoxyacetic acid is similarly prepared; (4) 2 : 4-dichloro-g -phenoxybutyric acid is prepared from g -phenoxybutyric acid by chlorination as in (1) in the presence of a trace of iodine, and (5) 2 : 4-dichloro-a -phenoxypropionic acid is prepared by passing chlorine into a solution of a -phenoxypropionic acid in glacial acetic acid in the presence of a reduced iron powder catalyst.
Patent GB-1443084-A (GB)
Title: Method of jointing optical fibres
IPC: G02B6/24
Filed: 1974-02-21
Abstract: 1443084 Jointing fibres and yarns BICC Ltd 20 Feb 1975 [21 Feb 1974] 7964/74 Heading D1W A joint between two (or two or more pairs of) optical i.e. light transmitting, fibres is effected by laying on a flat surface of a body or plate of metal e.g. copper, aluminium or silver or metal alloy (that has been so treated e.g. annealed, that it is soft and non-resilient) an elongate gauge having a cross-sectional shape and size corresponding to that of the fibres to the jointed; pressing the gauge into the surface to form in, and 'between two edges thereof, a groove of complementary crosssectional size; removing the gauge and aligning the two fibres in the groove so that neighbouring ends abut; applying to the grooved surface a flat surface of a second body or plate e.g. of glass or transparent acrylic resin, such that these surfaces are in interfacial contact; detachably securing, as by clamping, the two bodies together. The second body may be of a material so deformable as to flow into paints of the groove not occupied by the fibres. An index matching liquid or resin may be applied to the groove at least in the region where the fibre ends subsequently abut. The fibres may be of similar or different cross-sectional shape and/ or size and the gauge may be of uniform shape e.g. a similar fibre, or stepped accordingly. Composite fibres e.g. having a core and a sheath of different refractive indices may be jointed.
Patent GB-145167-A (GB)
Title: Improvements in locking-latches for doors
IPC: E05B55/00
Filed: 1919-03-31
Abstract: 145,167. Bond, V. C. March 31, 1919. Latches, sliding; locking sliding latches.-Consists in a latch comprising a spring bolt a having a hooked end g engaging with a hollow spindle i bv the rotation of which the bolt may be withdrawn, means within the spindle co-operating with a fixed guide-tube j for locking the spindle against rotation, and means for operating the locking- means either by a key from the outside of the door or by a knob from the inside. The locking- means comprise a short cylindrical block or tube m having pins n projecting through slots o in the spindle. The piece m can therefore move along the spindle, but cannot rotate independently. The pins n are normally adjacent to but clear of the end of the fixed sleeve j, which is slotted at h<2>. By moving the part m longitudinally, the pins n can be caused to engage in the. slots h<2>, thereby locking the spindle. This movement of the part m is effected by connected cams m<1>. The outer cam may be rotated by means of a key inserted through the handle i', suitable wards p' being provided; the inner cam is rotatable by a knob q<1> on the inside, operating through a spindle rand connecting-members t, u.
Patent GB-263007-A (GB)
Title: Improvements in or relating to the driving of net knotting machines
IPC: D04G1/00
Filed: 1926-03-25
Abstract: 263,007. Jackson, L. Mellersh-, (Siemens-Schuckertwerke Ges., and Dresdener Netzwerke). March 2,5, 1926. Drawings to Specification. Net-making machines are driven electrically at a variable speed, the speed of the driving motor being increased at certain stages of the cycle of operations by well known means.
Patent GB-268372-A (GB)
Title: Improved manufacture of coal products
IPC: C10G1/00
Filed: 1927-03-25
Abstract: 268,372. Koppers Co., (Assignees of Rose, H. J., and Hill, W. H.). March 25, 1926, [Convention date]. Mineral oils, extracting; liquid fuel.-A solution of coal in oil is obtained by dissolving coal in water-gas tar, coal tar- or other cyclic hydrocarbon oil heated to 200-400‹ C. The coal dissolves without decomposition mineral impurities remaining undissolved and being separated by decantation. The coal can be reprecipitated by the addition of light oils e.g. benzol in which it is insoluble. The product may be used as a liquid fuel or may be allowed to solidify and formed into briquettes &c, Mixtures of various kinds of coal can be obtained by dissolving the different coals in oil and reprecipitating the mixture. The process may be used for reducing the sulphur and ash contents of coals e.g. a coal containing about 9 per cent of ash and 3 per cent sulphur was heated with water gas tar distillate in a jacketed vessel heated to 270-320‹ C. The solution was extracted with benzene to remove undissolved material and then with ligroin to reprecipitate the coal, which on analysis was found to contain 46 per cent ash and 1.39 per cent sulphur. Further sulphur can be removed by treating the solution with copper turnings or black copper oxide. Reference has been directed by the Comptroller to Specification 131,588.
Patent GB-1048675-A (GB)
Title: Improvements in cartons
IPC: B65D5/66
Filed: 1964-02-27
Abstract: 1,048,675. Boxes. D. WAINBERG. Feb. 27, 1964, No. 8204/64. Heading B8P. A carton 15 formed from a pre-cut blank 16 comprising a base wall 17, side walls 18, 19 end walls 20, 21 and a cover 22 has locking flaps 23, 24 extending from the side walls formed with protruding portions 25 from which project locking lips 26 and transverse bendable flaps 29 extending from the end walls suitably slit at 30 and 31. The carton is erected by folding the walls and base into right angled relationship with each other and inserting the portions 25 into the slits 32 when the locking lips 26 are folded into face-to-face relation with the protruding portions 25. After insertion the lips 26 are unfolded to extend inwardly and downwardly within the end walls to prevent regression through the slits. In a second embodiment the portions 25 are joined to the end walls and have an integral gore which forms a web at the corners to prevent leakage. In a further embodiment each side wall is provided with a pair of angular shaped locking flaps, one pair of which have angular slits, the other pair having protruding portions with locking lips which are insertedinto the locking flaps so that the interlocked flaps form outer walls and the end walls form inner walls. The angle and disposition of the locking lips may differ. The container may be made from cardboard, plastics or aluminium.
Patent GB-389987-A (GB)
Title: Improvements in carburettors for internal-combustion engines
IPC: F02M7/12
Filed: 1932-03-19
Abstract: 389,987. Spray carburetters. PALLAS APPARATEGES., 17, Waitzstrasse, Charlottenburg, Berlin. March 19, 1932, No. 8275. Convention date, March 20, 1931. [Class 7(iii).] In order to obtain accurate adjustment of the fuel supply, the fuel is delivered through an aperture 14 into an auxiliary mixing chamber 12<1>, 12 which delivers into the main mixing chamber, the depression in the auxiliary chamber being controlled by an axially movable member 8 connected to the throttle valve 2 for the main air supply. The member 8 is screw-threaded on a rod 5, a spring 7 preventing accidental rotation. The member has two oppositely coned parts which co-operate with the edges 15, 16 of a sleeve 13 to decrease the inlet of air to, and increase the outflow of mixture from the auxiliary chamber as the throttle valve 2 is opened. Air enters through holes 28 in a plate 11, and the member 8 can be adjusted on rod 5 by turning the head 10. In a modified construction, Fig. 3, the air throttle 2<1> is actuated by a piston 22 loaded by a spring 23 and subjected to suction through a duct 29. The parts 5<1>, 8<1> correspond to parts 5, 8 in Fig. 2. A valve 24 is provided whereby the carburetter may be shut off completely. In a still further modification, the air throttle valve is actuated by a piston subjected to suction and sliding in a cylinder forming an extension of the auxiliary mixing chamber which is located on the top of the float chamber. The casing is provided with a number of threaded holes 25, 25<1> to receive bolts through the flange 35, 35<1> of the float chamber. In this manner the mixing chamber may be secured to the float chamber at any angular position. Further, in the construction shown in Fig. 2, by removing the plate 11 and attaching it to the other end of the auxiliary mixing chamber, the float chamber 21 may be attached at the opposite hand to that shown.
Patent GB-110322-A (GB)
Title: Improved Pocket Receptacle for Cigarettes or Cigars.
Inventor: JENKINS DANIEL
IPC: A24F15/14
Filed: 1917-06-11
Abstract: 110,322. Jenkins, D. June 11, 1917. Drawer-and-shell boxes ; contents, delivering &c. -A pocket container for cigarettes or cigars comprises a drawer B slidable in a case A and provided with a partition b<1>. The drawer may be pulled cut, as far as permitted by straps C, by a flexible flap b secured to it and adapted, when the drawer is pushed in, to form an end closure to the drawer and case secured by a fastening D<1>, D<2>. Extensions b<3> of the flap pass through apertures b<2>, and, when pressed up by the finger, lift the cigarettes into position for removal. Two of the drawers may be fitted, bottom to bottom, in a single case. A match-container may be mounted within the drawer, a rod fixed to the case serving, when the drawer is pushed in, to eject a match from the lowermost part of the container, and this part being contracted in width and a fresh match falling into it when the drawer is pulled out; the container may be filled through an aperture in its top.
Patent GB-220683-A (GB)
Title: Improvements in or relating to means for operating hinged bridges
IPC: E01D15/06
Filed: 1923-03-24
Abstract: 220,683. Berliner Akt.-Ges. f³r Eisengiesserei und Maschinenfabrikation and Zimmermann, H. March 24, 1923. Linkwork; toggles.-In a toggle linkage 1, 2, Figs. 2, 3 and 5, for lifting bridges by means of driving gear 7 and rack driving rod 3 connected to the middle joint 6 of the toggle, a spring or elastic link may be connected between the joint 6 and the rod 2.
Patent GB-907535-A (GB)
Title: Improvements relating to fuel elements for nuclear reactors
Inventor: COATES GRAHAM
IPC: G21C3/33
Filed: 1959-03-11
Abstract: 907,535. Nuclear fuel elements; handling nuclear fuel elements. A.E.I.-J. THOMPSON NUCLEAR ENERGY CO. Ltd. Feb. 9, 1960 [March 11, 1959], No. 8462/59. Class 39 (4). A fuel element assembly comprises fuel rods 1, 2 hanging from supports 4, 8, each support having horizontal arms engaging corresponding arms on adjacent supports, and banding 13 encircling the supports and clamping them together. The supports shown are cruciform, the arms having either projections or recesses; in an alternative embodiment, the supports have three arms coupled by coupling pieces, Figs. 12, 13 (not shown). Cruciform spacers are provided at the lower ends of the rods. Lugs 14 support the assembly in slots 21 in the wall of a fuel channel and are used for handling by a bayonet-type lifting tool 24; the lugs and the outermost supports have grooves to receive the banding cable 13.
Patent GB-128695-A (GB)
Title: Improvements in or relating to Hydraulic Engines.
IPC: F01B5/00
Filed: 1918-05-21
Abstract: 128,695. Lamplough, F., and Hydro- Dynamics, Ltd. May 21, 1918. Liquid-pressure engines.-An hydraulic motor comprises a casing rotatablv mounted on a fixed shaft A and having chambers B', B<2>, B<3> into each of which a pair of cylinders C', C<2> projects, the pistons of these cylinders being connected to crank-shafts F. The shaft A is cut away to form a valve co-operating with ports B<4> leading into the chambers, and each crank-shaft is provided with a pinion meshing with a stationary gearwheel on the shaft A. Each pair of cylinders may be replaced by a single cylinder with two pistons.
Patent GB-1407123-A (GB)
Title: Process for the manufacture of offset printing plates
IPC: G03F7/20
Filed: 1973-02-21
Abstract: 1407123 Printing plates HOECHST AG 21 Feb 1973 [24 Feb 1972] 8532/73 Heading G2M and G2X An offset printing plate for multi-colour printing and a corresponding proof-printing plate are each made from an identical pre-sensitized offset printing plate having a layer which includes a light-sensitive o-quinonediazide compound by (a) exposing to the same original in an identical manner, using the same or an identical light source which radiates light of which the part in the actinic (330-460 nm) range lies mainly within the 350-440 nm range, at least one intensity maximum being in this range and not more than 10% of the actinic light being above 440 nm, and (b) developing under identical conditions, the exposure time used in the preparation of the proof plate being measured by a light-integrating counter and the exposure time used to prepare the other plate being at least three times that used to prepare the proof plate.
Patent GB-515995-A (GB)
Title: An improved process for the manufacture of lead chromate and a mixture of lead chromate and sulphate
IPC: C01G21/00
Filed: 1938-03-19
Abstract: 515,995. Electrolytic production of lead hydroxide. PRIESTMAN COLLIERIES, Ltd., and FRENCH, T. G. March 19, 1938, No. 8548. [Class 41] [Also in Group III] Lead hydroxide is produced in an electrolyte comprising a sodium or potassium salt of an acid which forms a soluble lead salt, a lead anode being used. Suitable salts are nitrate, acetate, and chromate. The electrolyte is continuously circulated, and before it is returned to the electrolysis vessel its temperature and alkalinity are restored to the values of 15‹ C. and pH8 respectively.
Patent GB-250919-A (GB)
Title: Improvements in or relating to valve gear for internal combustion engines of the compression ignition type
IPC: F01L13/00
Filed: 1926-03-29
Abstract: 250,919. Groff, J. C. April 20, 1925, [Convention date]. Reversing.-In Diesel and other engines igniting by compression, the fuel valve gear is adjustable for varying the time of valve opening and valve closure independently of each other, and also for reversing the engine. Fig. 1 indicates diagrammatically the kind of valve-gear adjustments employed. The fuel valve 40 is connected to a slide 19 pivoted to the upper end 26 of a toggle linkage 21, the lower end 34 of which is adjustably fixed, while the centre pivot 25 is moved into the position shown in dotted lines to open the valve, which is then locked open. by the toggle, until the point 25 is again moved back to the full-line position. The toggle is actuated by a rod 9 connected to a lever 8 rocked about a pivot 52 by a cam 57 engaging rollers 1 and 2, and these rollers are adjustable in slots 45 so as to vary the moment and duration of valve opening. In practice separate cams 15, 16, Fig. 11. arranged in different lateral planes, are used for co-operating with the rollers 1 and 2 respectively for opening and closing the valve and the rocking lever 7, 8 connected to the toggle joint 25 is pivoted at 39 below the ams so as to be capable of working in a bath of lubricant. The rollers 1 and 2 are mounted on forked tappets 54 and 55. which are free to move radially so as to rock the lever 7. The rollers are further carried by members 14 and 13. which are adjustable in a groove 32 for varying the times of opening and closing. In order to keep the amplitude of the oscillations of the lever 7 constant for various positions of the rollers, the surfaces 62. 63 with which the tappets engage are made eccentric to the cam axis. For reversing, the opening and closing functions of the cams and rollers are interchanged, and to allow of this, the parts 62 of the lever 7 used for opening the valve are, raised above the parts 63 used for closing. Fig. 11 shows the parts arranged for ahead working, the cam 16 and roller 1 co-operating with the righthand portion 62 for opening, and the cam 15 and roller 2 acting on the left-hand portion 63 for closing. For astern working, the rollers are moved towards the right so that the roller 2 comes into contact with the left-hand part 62 for opening, and the roller 1 with the right-hand part 63 for closing. The rollers and cams may be interchanged, the former being mounted on the rotating shaft and engaging profiles on the tappets. Specification 238,204. [Class 7 (iii), Internal-combustion engines, Carburetting-apparatus &c. for], is referred to.
Patent GB-1502446-A (GB)
Title: Fermentative process for the production of l-tryptophan and its derivatives
IPC: C12P13/04
Filed: 1975-02-28
Abstract: 1502446 Tryptophan and its derivatives BOFORS AB 28 Feb 1975 [5 March 1974] 8570/75 Heading C2C L-Tryptophan and its derivatives of formula where R is hydrogen, hydroxyl, alkyl or alkoxy are made by a fermentation process using indole or indole derivatives of formula the fermentation being effected in a substrate having methanol as the main carbon source. The substrate also contains the usual inorganic salts and, possibly, glycine. Specified microorganisms are Pseudomonas AMI and Methylmonas methanolica.
Patent GB-922599-A (GB)
Title: Methods of manufacturing electrodes
Inventor: COTTON JOSEPH BERNARD
IPC: B22F7/00
Filed: 1960-03-11
Abstract: A method of making an electrode comprises rolling into sheet form an intimate mixture of metal powders consisting of titanium or an alloy of titanium having similar anodic polarization properties to titanium, and a noble metal from the group consisting of ruthenium, rhodium, palladium, osmium iridium, platinum, silver and gold, the porosity of the compacted powder mixture being not greater than 20%. An alloy formed between two or more of the above mentioned noble metals may be used instead of the pure metal.  The rolled sheet may be sintered to increase its strength.  Alloys of titanium which have similar anodic polarization properties may consist of titanium with niobium and/or tantalum.  In a modification the electrode consists of a titanium or titanium alloy core faced on one or both sides with a compacted mixture of titanium and noble metal.  Specification 887,941 is referred to.
Patent GB-231328-A (GB)
Title: Improvements in silos
IPC: B65D90/08
Filed: 1924-04-07
Abstract: 231,328. Hoard, C. April 7, 1924. Joints, carpenters, &c.-A silo is formed of superposed horizontal courses of intersecting timbers having complementary tongues and grooves 8, 9. The timbers in each course are arranged in pairs, each timber having vertical grooves 10, 11 on its inner face one near each end thereof, one series having also notches 12 on its upper edge and the other series having corresponding notches in its lower edge, whereby interfitting tenons 14, 20 are formed. In a modification. notches are cut in both the top and bottom edges of each series to form intermediate tenons 26. The building is erected on a concrete circular foundation 1 and hinged door portions 3 are provided at one face.
Patent GB-550867-A (GB)
Title: Improvements in or relating to lathes
IPC: B23B3/26
Filed: 1941-07-14
Abstract: 550,867. Lathes. BAIGENT, G. M. July 14, 1941, No. 8915. [Class 83 (iii)] A lathe has a number of tools arranged around the headstock fed by a rotatable cam-ring coaxial with the work and carrying a cam which feeds the tools sequentially to the work, a second coaxial cam effecting the positive withdrawal of the tools. Bar-stock 20 is fed through the usual collet 21 mounted in a headstock which has four shafts 11 mounted thereon, each shaft carrying a tool-arm provided wtih a holder 14 for a tool 15 and with a follower pin 17 which, for adjustment purposes, is eccentrically mounted on a rotatable member 16. The followers engage a cam-ring 22 provided with a cam 23 which has a steeply rising portion a for moving the tools up to the work, a part b giving the required depth of cut, a dwell portion c for smoothing the cut and a tool-withdrawing portion d. The cam-ring is rotated step-wise in an anticlockwise direction by a handle 24 on a ring member 26 connected to the cam-ring by a pawl 25. At each anticlockwise movement of the handle between stops the cam-ring is rotated through 45 degrees, thus moving one of the tools, Fig. 5, up to the work. The handle is then returned and on its next anticlockwise movement the cam-ring is further rotated to the position shown in Fig. 7 to complete the operative feed. The next return movement moves the tool positively to itsoutermost position, leaving the cam, Fig. 7, in position to actuate the next successive tool. The means for positively returning the tools comprises a cam 28 which is frictionally carried forward by the ring 23 during the first cyclic movement of handle 24 to a position, Fig. 5, abutting the follower 17. A detent lever 30 pivoted at 31 to the cam 28 has a spring projecting into the path of the follower 17 when the latter is in its inner position. The ring member 26 carries a ring 33 having holes which may accommodate the ends of levers 30 coacting with springs 37 on a fixed member 42, the springs normally being effective to hold the levers away from. the ring. When the tool has completed its feed and the parts are in the position shown in Fig. 7 the follower 17 has engaged a lever 30 with the ring 33 so that on the next return movement of the handle the cam 28 is rotated clockwise and the tool is positively returned by the cam slope 29. In a modification, Fig. 10, the tool slides may be mounted on radial guides 40 secured at 41 to the headstock. In a further modification a grooved cam-ring may move the tools positively in both directions. In another modification, one oscillation of the lever 24 may actuate the chuck instead of operating a tool. Specifications 261,360, [Class 83 (iii)], and 358,727 are referred to.
Patent GB-526610-A (GB)
Title: Improvements relating to ambulance stretchers
IPC: A61G1/013
Filed: 1939-03-22
Abstract: 526,610. Ambulance stretchers. DALRYMPLE, J. L. March 22, 1939, No. 9063. [Class 108 (i)] A stretcher comprises an all-metal frame having tubular metal poles 1 to which transverse stays 2 are pivotally attached, in combination with a tubular canvas or like bottom provided at its ends with straps 10 threaded through both layers. On tightening the straps the layers are held together. The lower ends of the bottom are formed as flaps 8 to allow the legs 5 to protrude and to allow both layers to be above the stays, if desired. The tubular bottom may be of strong paper or of synthetic cellulose or resinous composition sheet. The legs and stays are secured by bolts 4 engaging thimbles, to seal the interior of the frame against the entrance of poisonous or infectious fluids.