baber/WOPTO huggingface dataset:
Patent GB-794694-A (GB)
Title: Photographic process and apparatus
IPC: G03B17/52
Filed: 1956-08-24
Abstract: 794,694. Photographic process and apparatus. INTERNATIONAL POLAROID CORPORATION. Aug. 24, 1956 [Sept. 29, 1955], No. 25932/56. Classes 98(1) and 98(2) Processing of a succession of exposed frames of a photosensitive strip is effected by superposing the strip with a second strip, which may be provided for reception of a positive print by image transfer with processing composition released from a container therebetween, advancing the strips into storage means, and withdrawing and separating the strips commencing with the frame last superposed, the whole operation taking place between maximum and minimum processing time limits. The whole strip may thus be processed in one operation independently of the frequency of exposure of the frames. In apparatus for the purpose the exposed strip 12 and second' strip 14 originally coiled in spools 16, 18 respectively are wound together through rolls 28, 30 which cause release of processing fluid from containers 20 on strip 14 on to storage drum 32, and the strips are separated after the processing interval by winding back on to spools 16, 18. If the frames have not already been exposed, then exposure may be effected through lens assembly 22 while each frame is at rest on plate 24, and in this case the manner of operation is first winding and superposing the strips on to drum 32 while rolls 28, 30 are in an open position, winding back again and effecting the exposures then winding forward on to drum 32 with the rolls this time closed to release fluid from the containers, and subsequently again again winding back to spools 16, 18. Fig. 2 shows a larger cassette or container 44 two of which may replace spools 16, 18 and drum 32, these containers having feed rollers 52 inside walls 46 with slot 48 for feeding and withdrawing the strip or strips and guide members 54 preferably marginal so as not to press the fluid containers 20. Fig. 3 (not shown) is for a camera in which the superposed strips are folded instead of coiled as on drum 32 of Fig. 1. Specification 684,592 is referred to
Patent GB-602502-A (GB)
Title: New or improved safety air tube for wheel tyres
IPC: B60C7/12
Filed: 1945-10-05
Abstract: 602,502. Pneumatic tyres. SEEUWEN, A. M. C. Oct. 5, 1945, No. 25949. Convention date, March 5, 1940. [Class 144 (ii)] An auxiliary load-supporting tube c nested within the main (inflated) tube b is packed with hollow rubber or like elastic balls d. The balls may be of different sizes, and may be fixed in the tube by adhesive.
Patent GB-644912-A (GB)
Title: Knitting machines
IPC: D04B9/10
Filed: 1946-08-29
Abstract: 644,912. Knitting-machines. JACQUARD KNITTING MACHINE CO., Inc. Aug. 29, 1946, No. 25957. Convention date, Sept. 12, 1945. [Class 74 (ii)] Separate sinker loop drawing elements or " forecuts " 10, formed by bending up sheetmetal blanks, are carried in slots 11 formed in the edge of the needle bed (or an extension 19 thereof), Figs. 8 and 15; or in the needle face of the bed, Fig. 17; or in the opposite face thereof, Fig. 19. The forecuts may be slid along the slots, as by the aid of a tool 40, until projections 26 take into an undercut part 24 and projections 27 spring apart into an under cut part 25; or they may be rotated into position, Fig. 15. The upper edges of the forecuts may project slightly from the slot, Figs. 8 and 15. The undercut parts may be constituted by grooves in the needle bed. The two sides of the forecut may be left apart somewhat in forming, so that the forecut is initially a little wider than its slot.
Patent GB-1090074-A (GB)
Title: Improvements in or relating to fluid dispensing apparatus
Inventor: BOWEN TREVOR
IPC: B67D1/10
Filed: 1963-07-01
Abstract: 1,090,074. Valves. BOWSER INTERNATIONAL Ltd. May 7, 1964 [July 1, 1963], No. 26063/63. Heading F2V. A valve in a petrol dispensing apparatus comprises a body 11 defining a sector-shaped chamber 16 connecting with aligned inlet and outlet ports 14 and 15 respectively. A carbon closure disc 25 is supported on an arm 12 so that it can be moved by rotation of a shaft 17 from a position closing the outlet to to a position clear of the outlet. The disc 25 is loaded by a spring 26 towards the outlet 15 so that, in the closed position of the valve, excess pressure in the outlet can be relieved to the chamber 16 and inlet 14 through holes 28.
Patent GB-653741-A (GB)
Title: Improvements in and relating to a method and apparatus for precipitation of solids from solutions and the like
IPC: C01F7/144
Filed: 1947-09-25
Abstract: Crystallization is effected in a series of connected tanks each containing solution in which crystals are grown; the larger crystals are allowed to settle and are collected as a pulp at the bottom of the tank, and crystal-growth is controlled by withdrawing the pulp from each tank, returning some of the withdrawn pulp to the same tank, and (except in the case of the last tank) delivering the rest of the pulp to the succeeding tank which also receives the overflow of supernatant solution from the preceding tank.  The pulp not returned to the last tank, is filtered to give the crystals of product.  The method may be used to obtain well-developed crystals of alumina in the Bayer process, or to obtain magnesia from sea-water. Bauxite is digested under pressure in vessel 10, Fig. 1, with hot spent liquor (see below), lime and soda-ash.  The solution is passed to multi-tray thickener 14 from which red mud slurry is removed at the base, while the overflow solution is filtered and cooled, and then introduced together with seed crystals of alumina hydrate, into the feed-well 20 of the first of a series of crystallization tanks 21-24.  The crystals develop, and the larger ones settle down in the lower part of the tank.  The settled-crystals are raked by revolving blades 66 (see Fig. 4) to air-lift 63 which raises the pulp through shaft 60 from whence, by means of conduits 64 and 65, it is in part returned to the suspension in tank 21, and in part discharged into trough 67 and conduit 68.  The supernatant solution in tank 21 flows over weir 55 into launder 54 which also communicates with conduit 68. By these means the pulp and supernatant solution flow together through conduit 68 into the feed-well of the next tank 22.  Tanks 22, 23 and 24 are operated in the same way as tank 21 except that in the case of the last tank 24, the pulp is passed to classifiers 29, 30, 31, while the supernatant solution is passed to settling-tank 13. The overflow from tank 13 is heated in zone 45 and then used in the digestion of more bauxite in vessel 10; while the fine crystals deposited in tank 13 are used as seeds in the crystallizing tanks. The developed crystals of alumina hydrate in the pulp from tank 24 are washed with water and simultaneously raked in the classifiers, and then pass to rotary vacuum filter 39.  The wash-water is <PICT:0653741/III/1> pumped through line 34 to settling-tank 13.  A mechanical impeller disposed in the upper portion of the hollow shaft, which is enlarged to receive it, may be used instead of the air-lift to raise the pulp from the bottom of each crystallization tank.  In a modified crystallizing tank (Fig. 9), the settled-pulp in sump 100 is raised by pump 101 through external pipes 102, 104 to rotating nozzle 106 which discharges into one or other of the two sections 111, 112 of well 117.  The pulp in section 112 is returned to the crystallizing tank through pipe 116, while that in section 111 is delivered to a succeeding tank or to a classifier.
Patent GB-297037-A (GB)
Title: Improvements in the manufacture of roentgen ray fluorescent screens
IPC: G21K4/00
Filed: 1928-09-11
Abstract: 297,037. Haider, C. Sept. 12. 1927, [Convention date]. Fluorescent screens.-A substance such as zinc sulphide, calc-spar, siliceous calamine, magnesite, or dolomite, which fluoresces under the influence of R÷ntgen rays, is distributed in a flat layer in a hollow rarefied space enclosed, for example. between two glass plates which are fused together. at their edges, or between two celluloid &c. plates which are pressed together with great force and then cemented at their edges. It is stated that a screen so produced has no afterglow. Reference is made to screens made from barium platino-- cyanide and artificial willemite.
Patent GB-1375895-A (GB)
IPC: C07F7/22
Filed: 1972-06-05
Abstract: 1375895 Preparing dialkyltin oxides KUREHA KAGAKU KOGYO KK 5 June 1972 26177/72 Heading C2J A di-(C 8-24 )alkyltin oxide is prepared by firstly reacting an alkyl iodide with metallic tin to give a dialkyltin diiodide and secondly reacting this diiodide with an alkali metal hydroxide to give an alkaline reaction mixture containing dialkyltin oxide, excess alkyl iodide, and alkali metal iodide, separating the crude dialkyltin oxide and excess alkyl iodide from the mixture which is subsequently neutralized and dehydrated, the excess alkyl iodide being returned to the first step for further reaction with metallic tin, recovering alkali metal iodide from the dehydrated product and reacting it with an alkyl chloride in the presence of a water-soluble organic solvent to give an alkyl iodide which is recycled to the first step. The water-soluble solvent used in the latter reaction may be acetone and/or methylethylketone with reaction effected at 100- 200‹ C. or such solvent together with dimethyl acetamide or dimethyl formamide in which case the reaction temperature need only be 50- 150‹ C. The dialkyltin oxide may be extracted from the reaction mixture above by means of an organic solvent such as dimethylacetamide, methoxy-, ethoxy-, or butoxy-ethanol, n- or ipropanol or methylethylketone. The excess alkyl iodide from the intial reaction may be extracted from the thus-recovered solvent with dimethylformamide and returned to the first step. The initial reaction between the alkyl iodide and the metallic tin may be effected in the presence of triethylamine as catalyst.
Patent GB-815530-A (GB)
Title: Tube furnace for carrying out gas reactions in ceramic tubes
IPC: B01J8/06
Filed: 1955-09-13
Abstract: A tube furnace for carrying out gas reactions, preferably continuously, and more especially at temperatures higher than 900 DEG C., in ceramic reaction tubes freely suspended within a heating chamber in the furnace, comprises a plurality of such reaction tubes connected to a common gas supply means and a common gas discharge means, each tube being adapted during the running of the furnace to be shut off individually and to be separately replaced, wherein the reaction tubes are suspended in the form of a bundle from a head which may be equipped with cooling elements and which contain ducts leading one from each tube to a common gas chamber, and wherein a closable tube union which terminates at its upper end above the head is positioned above each duct and is adapted to be lowered so that a plate-shaped lower end engages the upper opening of the duct and thereby shuts off the latter and the associated reaction tube from the common gas chamber.  In the embodiment shown in Fig. 1, the reaction tubes 23 are suspended from a head 24 in a heating chamber 22 divided into two sections 221 and 222 by a restriction 26 which leaves a passage around the tubes of approximately the same total cross-section as that of the tubes.  The latter, which preferably have a wall thickness of 1-3 mm., pass through <PICT:0815530/III/1> <PICT:0815530/III/2> <PICT:0815530/III/3> upwardly flaring conical openings in a plate 25.  The heating chamber sections have respectively burner blocks 27 and 28 arranged in or discharging into said sections, and also have independent offtakes 231 and 232 leading to a recuperator and provided with separate draught regulators.  The tubes may alternatively be arranged around a central heating chamber or around a central flue.  Fig. 2 shows a head 31 with cooling chambers 33 receiving the tubes 32, and being closed by a cover 34 having a common gas chamber 35.  A further cooling device, having ducts 36 forming extensions of the reaction tubes, is disposed between the head and the cover, and is secured thereto by latches 328.  The tubes are secured by metal holders 38 having asbestos packing-rings 39 and a screw 322.  The ducts 36 are closed by screwed valve-closed tubes 324 having a sealing element seating in recesses 326.  A closing device, Fig. 3, may be disposed at the bottom of the tubes.  A common gas chamber 41 is connected to the tubes 48 by a flexible union 46 and carries a control head 42 for each tube, said head containing a conduit 43 with a control sleeve 44 and a closure cover 45.  The walls of the conduit 43 are formed with ducts 411 connecting the internal bore thereof with the chamber 41 and adapted to be closed by flexible packing 412 on the sleeve 44, when it is desired to close off a tube.  Packing material may be introduced into a tube by this device.  The furnace has been applied to the production of hydrocyanic acid from methane and ammonia using catalysts of the platinum group. Specification 815,531 is referred to.
Patent GB-606439-A (GB)
Title: Improvements in the manufacture of fluted rollers, more particularly of fluted rollers used in preparation and spinning machines
IPC: B21H5/02
Filed: 1945-10-09
Abstract: Fluted rollers for spinning &c. machines are made by rolling a cylindrical blank between fluted platens made of carbon steel of composition tungsten 17 per cent, vanadium 1 per cent and molybdenum .07 per cent.  They may be hardened at a temperature of 950-1000 DEG C. and annealed at 250 DEG C.
Patent GB-914085-A (GB)
Title: Improvements in strap securing and adjusting devices
IPC: B60P7/08
Filed: 1961-07-20
Abstract: 914,085. Strap fastenings. EASTERN ROTORCRAFT CORPORATION. July 20, 1961 [July 22, 1960], No. 26288/61. Addition to 816,968. Class 44. A strap fastening device comprises a pivot pin 19 extending between frame plates 16 and carrying a cylindrical snubber beam 18 and handle 20 to which is attached a second beam 23, the handle being attached to the pin 19 by slots 22 which permit limited movement of the handle to move the beam 23 toward or away from the beam 18. A cam member 29 pivoted between the plates and engaging in a slot 32 in the free end 13a of the strap, coacts with a surface 33 carried by the plates. With the cam member in released position (shown dotted, Fig. 4) release of the handle from the Fig. 2 position to Fig. 4 position relieves the clamping action of the beams 18, 23 on the strap which may then be pulled freely through the device to take up slack. The handle is then moved to the position 20b and the cam member 29 moved to the clamping position by pulling at an angle on the end 13a of the strap. Repeated movement of the handle between positions 20b and Fig. 4, and manipulation of the end 13a to apply and release clamping action of the member 29 allow the strap to be secured at varying tensions. The handle is held in the Fig. 2 position by a spring-loaded latch 26 engaging in notches 27 in the frame plates.
Patent GB-1299558-A (GB)
Title: Flow meter prover
IPC: G01F25/00
Filed: 1971-04-19
Abstract: 1299558 Measuring fluid-flow HELMERICH & PAYNE Inc 19 April 1971 [19 Oct 1970] 26305/71 Heading G1R The interchange 46 in a flowmeter prover loop 10 which comprises tube sections 15, 16, 18, (20), (22), 24, (26), (28), (30), 34, 36 through which a resilient sphere 42, 44 is propelled by fluid-flow and which has a main flow inlet connection 12 and an outlet (18) branched from section 34, has a reciprocating valve member 60 and a co-operating seat ring 62. The head of valvemember 60 is tapered and is movable by hydraulic cylinder 52 into sealing engagement with the seat ring thereby forcing a resilient sphere through the constriction defined by ring 62, past pivoted semicircular valve-members 74, which substantially prevent backflow, and into the inlet of the loop. Leakage between the ring 62 and valvemember 60 into groove 68 is detected by a fluidpressure operated switch 81. The sphere is turned in the loop between signalling devices 38, 40 and is then deflected into conduit 36 and held by a semicircular restraining member 82. When another run is to be started the valve-member 60 is raised and pivotally releases member 82 to allow the sphere to fall on to the seat ring 62, the ring preferably having a smallest diameter between 2% and 5% less than the diameter of the sphere. Spheres may be removed and inserted through a closure 57, temporarily insertable track rails (106) bridging the gap between the conduit 36 and opening 55.
Patent GB-897405-A (GB)
Title: Improvements in or relating to means for handling, transferring and transporting goods on vehicles
Inventor: PARK IAN EDWARD STEWART
IPC: B60P7/08
Filed: 1957-08-21
Abstract: A steel for hot rolling to form sheets has the following composition: .Carbon.0,12% maximum .Manganese.0,20% to 0,50% .Phosphorus.0,07% to 0,15% .Sulphur.0,05% maximum .Silicon.0,25% to 0,75% .Copper.0,25% to 0,55% .Chromium.0,30% to 1,25% .Nickel.0,65% maximum Specification 703,581 is referred to
Patent GB-738240-A (GB)
Title: Improvements in or relating to resistors
IPC: H01C1/148
Filed: 1953-09-24
Abstract: 738,240. Wire-wound resistors; electric couplings. WELWYN ELECTRICAL LABORATORIES, Ltd., and WHITFIELD, E. H. Sept. 3, 1954 [Sept. 24, 1953], No. 26359/53. Classes 37 and 38 (1). An electrical resistor comprises resistance wire wound round an insulating former and the resistance wire is electrically connected at its ends and at one or more points intermediate its ends to electrically - conductive members attached to metallized portions of the surface of the former. In the example wire-wound sections 15 on insulating former 11 are separated by flanged grooves 12 and connected to turnedup ends 20 of wires 19 soldered on to silvered or otherwise metallized grooves 12. Terminal collars 21 coincident with grooves 12 are provided, Fig. 2; also if desired intermediate or tapping collars. The resistance wire 17 is led from one section 15 to the next through a channel 16 along the former. 11 and a close tolerance may be attained by (a) winding up to the last but one groove 12, (b) applying resistor finishing processes, (c) adding last section 15 to take account of changes in resistance due to these finishing processes. Several resistors may be combined in series on a common former.
Patent GB-171007-A (GB)
Title: An improved spring suspension apparatus for motorcars and other vehicles
IPC: B60G11/04
Filed: 1920-09-15
Abstract: 171,007. Pazos, M. Sept. 15, 1920. No Patent granted (Sealing fee not paid). Laminar springs.-The axle end of a cantilever suspension spring 2 for a motor or other vehicle is strengthened by means of a series of auxiliary leaves 9 interposed between the leaves of the main spring and secured with the main spring to the axle 7, the use of torque members connecting the axle and chassis being rendered unnecessary. Spaces 13 are provided between the auxiliary leaves and the corresponding main leaves. The combined spring is secured to the axle seat 12 by a plate 11 and straps 10.
Patent GB-157043-A (GB)
Title: Improvements relating to tobacco pipe cleaners
IPC: A24F9/06
Filed: 1920-09-16
Abstract: 157,043. Sharp, T. D. Sept. 16, 1920. Cleaners for tobacco pipes.-To enable a flexible cleaner to be inserted in the bore from the bowl end, a tubular guide 3 is curved at the lower end to enter the bore and may be provided with a handle 4 which indicates the position of the tube.
Patent GB-1477841-A (GB)
Title: Method and a device for measuring a movement
IPC: G01D5/24
Filed: 1974-06-14
Abstract: 1477841 Measuring displacement electrically SOC DES PROCEDES MODERNES D'INJECTION SOPROMI 14 June 1974 [15 June 1973] 26550/74 Heading GIN [Also in Division H3] To linearize the relation between frequency and displacement for an oscillator circuit of which the frequency is varied in accordance with displacements monitored by a moving plate capacitor 2.4, an additional pulse of charging current is introduced, by operation of a monostable circuit 2.9, resistor 2.11 and switching transistor 2.10, at the commencement of the charging period of the capacitor. The non-linearity to be compensated is said to be due to parasitic capacitances. In an alternative embodiment, Fig. 3 (not shown) the additional pulse of current is produced by a circuit modifying the time constant (3.5. 3.4) of the capacitor (3.4). In the latter embodiment the transistor (3.10) is blocked when the output of the monostable circuit (3.9) is high and the capacitor charging current is then drawn through resistor (3.5) alone.
Patent GB-162994-A (GB)
Title: Improved means for recarburising molten steel in an open hearth furnace
IPC: C21C7/00
Filed: 1920-09-20
Abstract: 162,994. Kilby, J. N., and Bacon, N. H. Sept. 20, 1920. Charging.-A means for re-carburizing molten steel in an open-hearth furnace consists of a box a which is carried on a ram c and fitted with hopper-like plates a<4>, a', to contain the carbonaceous material, and provided with an extension a<6> to pass through the slag. The extension is temporarily closed by a cover, such as a wooden plug d, adapted to be melted or consumed in the molten steel. The openings a' between the plates and the extension are temporarily closed with paper stoppers, and a vent a<8> is provided to allow the escape of gas generated during the operation.
Patent GB-1181272-A (GB)
Title: Process for the Preparation of Alkyd Resins
Inventor: CHARLES JEAN PAUL
IPC: C09D167/08
Filed: 1967-06-12
Abstract: 1,181,272. Alkyd resins. PRODUITS CHIMIQUES PECHINEY-SAINT-GOBAIN. 12 June, 1967 [13 June, 1966], No. 26943/67. Heading C3R. Oil-modified alkyd resins are made by reacting (1) a mono-ester of 1,2,3,4-butane-tetracarboxylic acid and a monohydric alcohol having a b.p. above 130‹ C., (2) a polyhydric alcohol (e.g. glycerine, trimethylol propane or pentaerythritol and (3) a fatty acid (e.g. pelargonic acid or copra fatty acid) or a product obtained by alcoholysis of a fatty oil and a polyhydric alcohol. Coating compositions may be made by (a) neutralizing those products having an acid number of 50 to 100 with a base (e.g. trimethylamine) and dissolving the product in water or (b) dissolving those products of acid number below 10 in an organic solvent (e.g. xylene, butanol, 2-ethoxyethyl acetate, 2-methoxyethanol or a ketone). Either coating composition may include a urea-formaldehyde or a melamine-formaldehyde resin.
Patent GB-532996-A (GB)
Title: Cathode ray tubes and the like
IPC: H01J25/78
Filed: 1939-09-30
Abstract: 532,996. Cathode-ray tubes. STANDARD TELEPHONES & CABLES, Ltd. Sept. 30, 1939, No. 26946. Convention date, Sept. 30, 1938. [Class 39 (i)] In a cathode-ray tube where high-frequency voltages are applied to the deflecting plates the applied voltage is caused to travel along the plates at approximately the longitudinal velocity of the ray, so as to compensate for disturbances due to alteration of the voltage during the transit of the electrons. For this purpose one of the plates is divided into portions dl ... d6, connected by inductances L. The last impedance is connected to the other plate and the other pole of the voltage source through a resistance RT. The relations between the dimensions of the portions d1, d6, the inductances L and the resistance RT are discussed, as is the coupling of the inductances to increase the range of frequency to which the invention is applicable.