baber/WOPTO huggingface dataset:
Patent GB-636836-A (GB)
Title: Improvements in or relating to apparatus for making paper and like bags
IPC: B31B29/00
Filed: 1948-05-12
Abstract: 636,836. Making paper and like bags. ROBINSON, Ltd., E. S. & A., DAVIES, K. W. and WILLS, S. C. F. May 12, 1948, No. 13058. [Class 94(ii)] In apparatus for making block bottom bags of the kind comprising a nose piece 11 adapted to enter the leading open end of a bag tube 26 to restrain forward movement of the upper wall of the tube while the lower wall continues its progress under the nose piece, the bottom or floor of the latter is constituted by an endless travelling belt 25 or the like adapted to make contact with the lower wall of the tube and assist in drawing it under the nose piece. The belt is mounted on a driving pulley 13 and a driven pulley 15 carried by a channel-shaped casing 12 formed with an inclined face 17 and connected to the frame of the machine by a pivotal connection 34 and a pin and slot connection 35. Springs 37 urge the casing downwardly. The nose piece is disposed above a table 19 formed with a slot in which is disposed the upper run of an endless belt 23 which is driven by friction from the belt 25. The leading end of the bag tube, which is pushed forward by rolls 38, is given an initial opening by a spring tongue 40 on the end of a bar extending inside the tube, whereby the nose piece may enter the tube. The bar is then retracted to a position with the spring tongue at 40A, where a rotary knife 42 cuts off a length of bag. When retracted, the spring tongue presses upwards a cut-out tongue 44 on the tube, whereby the tongue 44 may be turned over by a fixed bar 45. Subsequently the spring tongue is again advanced to the position 40. A cross member 46 descends from a position 46A to press on the bag tube and advances, together with the tube, between the belts 23, 25 until the diamondshape of the bottom is completed. Subsequently the cross member is retracted to the position 46A. In a modification the belt 23 is omitted and the tube is frictionally engaged by the belt 25 and drawn along the table. Specification 620,945 is referred to.
Patent GB-241827-A (GB)
Title: Improvements in or relating to the manufacture of knurled rollers or the like for use more particularly in paper or like sheet feeding and folding machines
IPC: B23B5/00
Filed: 1925-05-19
Abstract: 241,827. Canadian-American Machinery Co., Ltd., (Toronto Type Foundry Co., Ltd.). May 19, 1925. Knurling.-Printing &c. rollers are knurled with pairs of longitudinal ribs of equal height by superposing on the initial knurling operation a second knurling operation. A roller B is knurled in one direction from left to right by the roller A forming unequal ribs B<1>, B<2> and is then knurled from right to left which equalizes these ribs by superposing on them pieces B<3> and B<4> so that when the rag at the edge is ground off the teeth are of equal height. The apparatus shown in plan in Fig. 11 comprises a slide rest carrying two knurling wheels A one on each side of the work and, if desired, second knurling wheels A<4> slightly larger than the wheels A but of the same configuration are mounted just behind the first wheel A. If the second knurling wheels A' are not used, the wheels A are traversed from right to left and back again if the lathe reverses, or if non-reversing the work is released and replaced with the ends exchanged for the superposed cut. The lead screw of the lathe is vertically below the work.
Patent GB-788152-A (GB)
Title: Solid siliceous materials of high surface area and method of making same
Inventor: ILER RALPH KINGSLEY
IPC: B01J21/08
Filed: 1953-10-19
Abstract: A friable dehydrated silica gel, which can be rewetted with the menstruum from which it was dehydrated during formation and redried without shrinkage or collapse of its structure, consists essentially of dense amorphous silica spheroids having an average diameter of 5-150 mm  which are joined together by accretions of dense amorphous silica to form aggregates of porous reticulated structure having a specific surface area of at least 1 sq. m/gm. and at least one dimension of at least 150 mm .  Preferably the specific surface area is 200-400 sq. m/gm. the pore diameter is greater than 4 mm  and the spheroids have an average diameter of 15-100 mm .  The gel may be prepared from a mol. initially of particle size less than 5 mm , e.g. by passing an alkali metal silicate solution through an ion exchange resin.  The silica concentration is preferably 3-30 gm/100 cc. and the specific surface area 20-75 sq. m/cc.  The particle size may be increased to the range of 5-150 mm  (a) by adjusting the pH to 7-10.5 and heating to a temperature of 80-95 DEG  C.; or (b) by partially neutralizing sodium or potassium silicate with sulphuric, hydrochloric or carbonic acid at a pH of 8-11 in the presence of already formed silica sol.  Gelling may be effected at a pH of 5-8, or at a pH of up to 10.7 in the presence of sodium sulphate, potassium chloride, ammoniate nitrate or lauryl pyridinium chloride. Gelling is accelerated by heat at pH values down to 3. Accretion of freshly formed active silica on the individual spheroids of the gel may be effected by (a) precipitation of silica on silica gel in aqueous suspension at a temperature of 60-125 DEG  C. and a pH of 8-11 with an alkali metal ion concentration of 0.1-1.0 N, preferably 0.1-0.5 N, the amount of silica so accreted being less than 4 times, preferably 0.5-1.0 times, the silica in the original gel; or (b) heating an aqueous suspension of the gel at 80-250 DEG  C. at a pH of 5-10.7, preferably 5-8, to decrease the specific surface area by 10-75 per cent, preferably 50 per cent.
Patent GB-1255146-A (GB)
Title: Improvements relating to air bricks in buildings
Inventor: DUFFIELD LEWIS
IPC: E04B1/70
Filed: 1968-03-19
Abstract: 1,255,146. Ventilators. RED BANK MFG. CO. Ltd. 18 March, 1969 [19 March, 1968], No. 13127/68. Heading F4V. [Also in Division El]  A rectangular section concrete tube having baffles 8 and 9 projecting thereacross is grouted into a wall 1 behind an air brick 2 to prevent snow and rain penetrating to the interior.
Patent GB-345540-A (GB)
Title: Improvements in machines for closing collapsible tubes or containers
IPC: B65B7/14
Filed: 1930-04-29
Abstract: 345,540. Collapsable tubes or containers. SCHILLING, H. O. G., 14, Alardusstrasse, and PœHL, A. G., 40, Dorotheenstrasse, both in Hamburg, Germany. April 29, 1930, No. 13132. Convention date, April 29, 1929. [Class 11.] In a machine for closing collapsable tubes or containers of the kind in which ratchet-mechanism is employed for feeding the tubes and operating the closing mechanism, the closing mechanism is operated during the return or idle stroke of the actuating pawl. The feed mechanism, shown in plan in Fig. 2, is operated by a rod a connected to a rocking arm b, which carries a pawl c engaging with a ratchet wheel d. The ratchet wheel is secured to a disc h, which supports the tube holders i, and the arm b is secured to an actuating disc j, which operates the closing devices by means of cam slots, The tube-holders are in the form of pincers, one leg of each of which is pivotally mounted, and has an extension o bearing against a fixed disc q. The disc q is formed with portions of different radius, one of which allows the pincers to open slightly for insertion of the tubes, whilst the other causes the tubes to be gripped tightly during the closing operation. A gap q<3> in the disc allows the pincers to be widely opened to permit the closed tube to fall out, after which the pincers are partly'closed again by a spring-controlled lever operated by the arm b. The closing of the tubes is affected in four operations. The end of a tube is first flattened by jaws w<1>, W<SP>2>, Fig. 6, carried by slides w<3>, w<4>, which are operated by cam-slots j<1>, j<2>, Fig. 2, in the disc j. The cam-slots are partly concentric with the axis of the disc, so that the jaws w<1>, w<2> are closed during the latter part of the idle stroke of the feed pawl, and are opened during the earlier part of the feedstroke. The tube is then acted on by a pair of inclined slides x<1>, x<2>, Fig. 7, which bend the end of the tube over obliquely. The bent part is then flattened by a pair of rollers carried by slides j<5>, f<6>, Fig. 2, and another oblique bend is formed by a second pair of inclined slides y. The two pairs of inclined slides are connected by rods j<3>, j<4> with the slides j<5>, j<6>, so that all three are operated by a single pair of cam-slots. The end of the tube is finally flattened by a pair of jaws similar to the jaws W<1>, W<2>.
Patent GB-549183-A (GB)
Title: Improvements in or relating to flexible pipe joints
IPC: F16L27/113
Filed: 1941-10-13
Abstract: 549,183. Pipe joints. KODAK, Ltd., and NOBLET, H. Oct. 13, 1941, No. 13176. [Class 99 (i)] A flexible pipe joint for water, gas, or other mains comprises beaded or corrugated ends 2 to the pipes 1 forming spigots around which is placed a flexible packing 3 of moulded or spun lead, vulcanized rubber, impregnated fabric, plastic compounds &c. a two-part internallycorrugated member 5 being clamped around the packing by bolting flanges 6 together. The corrugations 2 may be formed on a separate ring attached to cylindrical pipe ends ; or they may be formed on the packing 3, the inner surface of which is then cylindrical to fit over plain pipe ends except that grooves may be provided around the inner surface of the packing and be filled with red lead &c. The contiguous ends of the pipe may be cut at an oblique angle so that by relative rotation between the pipes one section may be coupled to an adjacent section with their axes at a slight inclination to one another.
Patent GB-931282-A (GB)
Title: Improvements in and relating to oscillation generators
IPC: H03B5/34
Filed: 1959-04-17
Abstract: 931,282. Valve frequency changing circuits. R. A. WILSON. July 18, 1960 [April 17, 1959], No. 13250/59. Class 40 (6). Two oscillators, one crystal controlled and one continuously variable are coupled to one another and the beat frequency output is taken from a tunable circuit in the anode circuit of one oscillator. The triode 10 has a variable tuned circuit 14, 15, 16, 17 between grid and earth. A tetrode 11 has a tuned circuit 20, 22 connected to screen and via a crystal 21 to its grid. The grid is connected to the output of a low-pass filter 28 which is fed from cathode of triode 10, the anode current of valve 11 being modulated by the frequencies of both oscillators. The desired frequency is selected by the tuned circuit 29 which may be gauged to capacitor 15. The output can be taken direct from the anode of the tetrode via capacitor 37 or from terminals 34, 35 which are inductively coupled to the tunable circuit 29 gauged if desired, with the oscillator tuned circuit.
Patent GB-581224-A (GB)
Title: Improvements in or relating to the bonding of rubber to synthetic resins
IPC: B29C37/00
Filed: 1944-07-11
Abstract: 581,224. Compound sheet materials. HALL & HALL, Ltd., and SAMPSON, H. E. July 11, 1944, No. 13264. [Class 140] Natural or synthetic rubber 3 is bonded to a core or base 1 of synthetic resin by first bonding a metal gauze 2 to the core and then moulding the rubber to the gauze. The core may be formed of fabric impregnated with a thermosetting resin such as phenol formaldehyde, and a brass gauze placed around it or placed as a lining in the mould is united to the core in the moulding operation used to cure the resin. Resin expressed through the mesh of the gauze forms a coating over it as shown at 7, Fig. 2 and this coating is cleaned off by means such as a revolving wire brush to expose the gauze 2. The core, so prepared, is united by vulcanisation to the natural or synthetic rubber covering 3. The object illustrated is a pump impeller but the method may be used to produce other articles such as wheels. Thermoplastic resins may be used for the core and may be united to the gauze during or after moulding. Expanded or perforated metal may be used in place of gauze. Copper or other metal may replace brass.
Patent GB-133613-A (GB)
IPC: B26D1/16
Abstract: 133,613. Svensson, E. April 2, 1919. Cutting slices in succession. - In a machine for slicing meat &c. of the type in which a rotating knife is mounted so as to move in a complete circular path about a fixed centre, a driven shaft at the centre drives the knife by chain or spur gearing. As shown, a knife 7 is mounted on an arm 10 on a fixed bearing 2. A driven shaft 3 rotates the knife by a chain 5 and chain-wheels. A spur or friction wheel 12 on the same shaft as the knife engages a stationary spur or friction wheel 13 and causes the arm 10 and knife to travel in a complete circle round the shaft 3.
Patent GB-578069-A (GB)
Title: Improvements in or relating to the electrodeposition of tin
IPC: C25D3/30
Filed: 1944-07-13
Abstract: 578,069. Electrolytic deposition of tin. DU PONT DE NEMOURS & CO., E. I., and BLACKBURN, N. F. July 13, 1944, No. 13401. [Class 41] [Also in Group II] A process for the electrodeposition of tin comprises the electrolysis of an aqueous metal stannate electroplating bath using an anode formed of an alloy of tin and between 0.1 per cent. and 10 per cent. by weight of at least one alkali metal such as : sodium, potassium, lithium, caesium. The anodes are prepared by heating tin to about 270‹C., introducing a slight excess of the alkali metal under an inverted crucible held in place under the surface of the molten tin, agitating the mixture and skimming the surface and then pouring the mixture into moulds. The alkali metal is stated to greatly increase the efficiency of anode operation at current densities above 50 amps. per square foot, this statement being substantiated by tables of efficiencies using pure tin anodes and the alloy anodes.
Patent GB-1032261-A (GB)
Title: Process for producing ª‡,ª‰-unsaturated carboxylic acids
IPC: C07C57/055
Filed: 1964-04-01
Abstract: a ,b -Unsaturated monocarboxylic acids are prepared by the vapour phase oxidation of a ,b -unsaturated aldehydes at temperatures not exceeding 500 DEG  C. in the presence of oxygen or an oxygen-containing gas and a catalyst comprising oxides of vanadium and molybdenum in a ratio of 100: 1-500 by weight.  The catalyst may be supported on a carrier, preferably aluminium sponge, and may include, as additional components, P2O5, As2O3, B2O3, TiO2, WO3 or NiO, preferably 1-20% by wt. P2O5.  The oxidizing agent may be air, oxygen enriched air, or oxygen diluted with nitrogen, carbon dioxide or steam.  Reaction temperatures are generally in the range 200-500 DEG  C. Examples describe the preparation of acrylic and methacrylic acids.ALSO:Oxidation catalysts comprise MoO3 and V2O5 in the weight ratio 100: 1-500 respectively.  The catalyst may also contain P2O5, As2O3, B2O3, TiO2, WO3 or NiO, preferably P2O5 in an amount 1-20% based on total weight of MoO3 and V2O5.  The catalyst may be supported on a carrier, preferably aluminium sponge of surface area 0.2 to 1 sq. m/gm with which the catalyst components exhibit a synergistic effect.  Other carriers are Al2O3 pumice, SiC, SiO2.
Patent GB-697198-A (GB)
Title: Improvements in electrodes for galvanic cells
Inventor: BRANDT ERIC GUSTAV
IPC: H01M4/76
Filed: 1951-06-07
Abstract: 697,198. Batteries. AKTIEBOLAGET TUDOR. June 7, 1951, No. 13579/51. Drawings to Specification. Class 53. The active material of an accumulator electrode of the pencil type is covered with a layer of woven or knitted material which is enclosed in a perforated thermoplastic tube. The woven material may be glass fabric and the tube may be made of polyvinyl chloride.
Patent GB-528439-A (GB)
Title: Improvements in or relating to fluid propelling and suction means by means of blades which automatically adjust themselves during working
IPC: F04D29/38
Filed: 1939-05-08
Abstract: 528,439. Propellers. GHIRARDI, L. May 8, 1939, No. 13669. Convention date, May 13, 1938. [Class 114] [Also in Group XXVI] Vanes 8 of a fan impeller or a propeller are hinged freely on axes 6 which are substantially inclined to both the radial and axial directions and to radial planes through the hinges. The body 3 may have the form of a zone of a spherical or paraboloidal surface as described in Specification 310,101, [Class 114 (i)]. The vanes may be helicoidal or plane and the body may have spiral ribs. The Specification as open to inspection under Sect. 91 comprises also a discoidal body with radial hinges for the vanes. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1173789-A (GB)
Title: Hollow Charge Devices for Use in Land Mines
Inventor: DIEHL KARL
IPC: F42B1/02
Filed: 1967-03-28
Abstract: 1,173,789. Hollow charges. K. DEIHL. 28 March, 1967 [28 April, 1966], No. 13907/67. Heading F3A. Hollow charge for use in land mines comprising a housing 1; an explosive filling 3, e.g., of hexatole; and a conical insert 2, e.g., of zinc alloy or copper, whose wall thickness increases toward the apex, the ratio of the thickness of the wall of the explosive filling to the wall thickness of the insert being approximately constant over the major part of the conical area of the insert. The tip of the insert may be cut off and replaced with a polyethylene core 4. A nut 9, formed with means 10 for focusing the flash from an electric detonator 11 on to a nitropentane priming charge 8, is screwed on to the housing 1. An aluminium ring 5 secures the insert. 'The wall thickness ratio may be approximately 3.C 2 /C 1 , where C 1  is the density of the explosive, and C 2  is the density of the insert material, and can have a value 1 : 9.
Patent GB-1503489-A (GB)
Title: Tyre interiors
IPC: B60C5/24
Filed: 1974-03-28
Abstract: 1503489 Valves MOLEHURST Ltd 17 March 1975 [28 March 1974 20 Aug 1974] 13907/74 and 36491/74 Heading F2V [Also in Divisions B5 and B7] In a pneumatic tyre (see Division B7) having a plurality of air compartments arranged in succession around the circumference of the tyre, inflation of the tyre is effected through a passage 26 connected to each compartment by a respective one-way valve 30, Fig. 5, and deflation is effected through respective one-way valves 32 connecting each compartment to a passage 28, the passages 26, 28 being connected to a main valve 50, Fig. 4, including a valve member 71 movable against the action of a spring 72 into the position illustrated in which ports 62, 66 opening into the passages 26, 28 are in communication with an open main air inlet/ outlet port 59. When the member 71 ceases to be depressed the spring 72 moves the member 71 into a position such that the ports 62, 66 are not in communication with each other and the port 59 is closed. A modified valve 50 (Fig. 3, not shown) employs two valve members biased to block respectively the port 59 and a passage connecting the ports 62 and 66.
Patent GB-831226-A (GB)
Title: Improvements in or relating to electromagnetic flowmeters
Inventor: SHERCLIFF JOHN ARTHUR
IPC: G01F1/58
Filed: 1957-05-01
Abstract: 831,226. Interaction generators; magnetic couplings. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. April 29, 1958 [May 1, 1957], No. 13957/57. Class 35. [Also in Group XXIX] A liquid flow meter comprises a pair of discs 6 on a common spindle 7 and carrying inwardly directed magnets 8 between which the liquid carrying duct 1 passes, movement of the rotor being caused by the interaction of currents induced in the liquid and the magnetic flux between the magnets. The tube may be of conducting or insulating material, and it may be curved to follow the path of the magnets.
Patent GB-168142-A (GB)
Title: Improvements in the method of mounting one member upon another, such as a boss on a shaft or an outer hub upon an inner hub, for the purpose of providing a centering connection and preventing relative rotation
IPC: B60B27/00
Filed: 1920-05-21
Abstract: 168,142. Rudge-Whitworth, Ltd., and Pugh, J. V. May 21, 1920. Detaching from, and attaching to, permanent hubs. - Relates to means for transmitting the drive between pairs of rotating members, such as shafts and wheels, of the kind in which the two members . have engaging tapered polygonal surfaces, and consists in the formation of such surfaces of an odd number of equal sides in excess of four similarly arranged round the axis of rotation with the object of ensuring contact between at least three pairs of sides simultaneously and avoiding looseness between the members due to inaccurate fiting. The invention is described in its application to the mounting of detachable wheels on permanent hubs. In Fig. 3, the permanent hub a and detachable wheel hub b are shown in section, and of the form of a regular heptagon. As no two pairs of faces are parallel, and the hub members are tapered longitudinally, the act of forcing one member over the other will draw at least three pairs of faces into contact at r, r<1>, r<2> and connect the members rigidly together even if clearances exist between the other pairs of faces as at r<3>, r<4>, r<5>, r<6>. Figs. 9 and 10 show the application to driving connections of the kind described in Specification 165,490 in which two sets of driving surfaces l, k are spaced axially of the members and communicate the drive in opposite directions. The driving surfaces are regular polygons with an odd number of sides, and, while the polygonal formations are symmetrical on one surface, those on the other surface are slightly displaced angularly as shown in Fig 9. With this arrangement, as the two members are moved axially relatively to one another, they are also moved angularly, and contact occurs at, at least, three points as t, t<1>, t<2> of the surfaces k, and at least three points as v, v<1>, v<2> of the surfaces l, the clearances at other points as t<3>, t<4>, t<5>, t<6>, v<3>, v<4>, v<5>, v<6> having no effect on the rigidity of the driving connection in either direction.
Patent GB-403868-A (GB)
Title: A process for the manufacture of tea free from theine or caffeine
IPC: A23F3/36
Filed: 1933-05-15
Abstract: A process for manufacturing tea free from theine consists in breaking up moist fermented or unfermented leaf by treatment with organic or inorganic solution of alkalis, extracting the treated leaf, and separating the theine from the aromatic ingredients in the extract. The aromatic ingredients are then returned to the leaf. Alternatively, after the treatment with alkali, the leaf may be subjected to a low pressure dry distillation to remove the theine and aromatic ingredients, these being condensed and separated as before.
Patent GB-286931-A (GB)
Title: Appliance for cutting up fruits, vegetables or other articles into uniform slices particularly tomatoes and onions
IPC: B26B29/06
Filed: 1927-05-26
Abstract: 286,931. Lanzkron, (nÚe Askenazy-Farbstein), A. May 26, 1927. Holders for hand cutting.-Fruits, vegetables, or other articles to be cut up are held between two curved slotted jaws c, d, that can be adjusted relatively to each other along a base h. The jaws may be pivoted and pressed towards each other by a spring. At one end the jaws are provided with walls o and n respectively the substance being held at the other end by a slide p that can be pushed into a suitable slot. The substance is cut by a knife a the edge of which is serrated at its middle, the knife moving down the slots until it engages rollers l, m forming stops.