baber/WOPTO huggingface dataset:
Patent GB-315316-A (GB)
Title: Improvements in fire extinguishing apparatus
IPC: A62C11/00
Filed: 1929-07-09
Abstract: 315,316. Pyrene Manufacturing Co., (Assignees of MacGregor, P. G.). July 11, 1928, [Convention date]. Direct air-pressure apparatus, non-automatic. -In a fire-extinguisher of the kind in which . liquid is ejected from a container by gas kept under pressure in a pressure chamber, the outlets from the latter to the container and from the container to the delivery nozzle being normally maintained closed, two valve heads controlling the two outlets are arranged within a single housing and are moved simultaneously by a rotatable cam. As shown, the extinguisher comprises a liquid container 10 and a pressure chamber 14 with an air pump 16 operated by a handle 22. The pump cylinder communicates with the chamber 14 by a pipe 24 provided with a check-valve. Carried by the head 12 of the extinguisher is a valve housing 34, Fig. 7, provided with two adjustable tubular valve seats 41, 43. The seat 41 communicates with the pressure chamber by a pipe 51 and with the air space of the liquid container by an orifice 48, and the seat 43 communicates with the lower end of the liquid container by a pipe 52 and with a discharge hose by a pipe 49. Co-operating with the valve seats are two valve heads 39, 40 carried by a yoke 62. The latter is moved, to open or close the valves simultaneously, by a pin 66 and a cam-slot 60 in a disc 59 arranged in the housing 34 and operated by a hand-wheel 58. A second cam 61 carried by the disc further acts to move the yoke to closing position and lock it on passing a dead centre. A filling plug and a pressure gauge are carried by the head of the extin. guisher.
Patent GB-1501357-A (GB)
Title: Process for the manufacture of n-alkylamino-and n,n-dialkylaminoanthraquinones
IPC: C09B1/30
Filed: 1976-05-21
Abstract: 1501357 Preparing N-alkyl and N,N-dialkylaminoanthraquinones CIBA-GEIGY AG 21 May 1976 [23 May 1975] 21120/76 Heading C4P N - Alkylamino- and/or N,N-dialkylaminoanthraquinones are prepared by reacting an optionally further substituted mononitro- or dinitroanthraquinone with at least twice the molar amount, based on the nitro groups to be reacted, of an alkyl substituted acid amide at 100 C. to the boiling point of the alkyl substituted acid amide. The preferred acid amides have the general formulae and SO 2 (NRR<SP>1</SP>) 2  wherein R and R<SP>1</SP> are independently, alkyl, aralkyl, cycloalkyl or hydroxyalkyl radicals having up to 8 C atoms. The nitroanthraquinone may be substituted by halogen or by OH, amino, carboxyl or sulpho groups, and the weight ratio acid amide:nitroanthraquinone is preferably 4:1 to 10:1.
Patent GB-224317-A (GB)
Title: Improvements in or relating to the coating with metal of dentures or other bodies formed of vulcanite or the like
IPC: A61C13/07
Filed: 1923-08-22
Abstract: 224,317. Daly, J. A., and Gold Sealed Denture Process Co., Inc. Aug. 22, 1923. Drawings to Specification. Gilding, silvering, and platinizing. - Dental plates or other bodies formed of vulcanite, celluloid, or the like are coated with gold, platinum, silver, or other metal metal by immersion first in a solvent or other softening agent and then in a solution of a salt of the metal from which the metal is deposited upon and slightly below the surface of the vulcanite &c. A vulcanite denture is immersed in or treated locally with chloroform, alcohol, acetic acid, or a mixture thereof until the surface is sufficiently softened. The denture is then washed to remove the solvent and immersed in a 20 per cent solution of gold chloride to which 10 per cent of potassium sulphide or other soluble sulphide, and 10 per cent of a reducing agent such as oxalic acid or tannic acid have previously been added. The deposit of metal produced may be thickened by further immersion in the gold chloride solution, or by electroplating, or by both processes. The gold chloride may be replaced by other metal salts such as silver nitrate, or platinum tetrachloride.
Patent GB-1515411-A (GB)
Title: Mixers
IPC: B05B12/00
Filed: 1975-05-19
Abstract: 1515411 Mixing apparatus SOGEMARIC 19 May 1975 [31 May 1974] 21212/75 Heading B1C In apparatus for suspending a constant proportion of a solid in a liquid flow, the solid in the form of a cartridge 2 consisting of the active material and a disintegrating agent has a surface 3 forming part of the boundary of a mixing chamber, the liquid being directed substantially in the plane of the surface. The block rests on a support (17, Figs. 4-6 not shown) towards which it is urged by a spring 9, or by fluid pressure through a by-pass (11, Fig. 2 not shown), acting through a piston 10 or a membrane. In the embodiment of Fig. 3 the mixing chamber is an inverted frusto-cone and the liquid enters through a plurality of peripheral inlets 16. The mixing chamber may be cylindrical, hemispherical or double conical.
Patent GB-1107937-A (GB)
Title: Current-limiting fuse
Inventor: JACQUES HENNEBERT
IPC: H01H85/30
Filed: 1966-05-13
Abstract: 1,107,937. Fusible cut-outs. ETABLISSEMENTS MERLIN & GERIN S.A. 13 May, 1966 [5 June, 1965], No. 21280/6. Addition to 987,386. Heading H2G. In a fuse having a striking pin 21 actuated by detonation of an explosive charge 16 when a spark jumps between the pin 21 and an electrode 25 as a result of the restriking voltage appearing across these electrodes when the fuse elements (not shown) have melted, premature detonation is prevented by providing a second spark-gap in series with the first and which requires a greater spark-over voltage than the first. As shown, the second sparkgap is an airgap defined by an insulating washer 26 located between the electrode 25 and the end 17 of a wire 23, the wire and spark-gaps being effectively in series and being connected in parallel with the main fuse elements. The fuse may be of the cartridge type with the fuse elements embedded in sand and connected between end caps, one of which is mechanically and electrically connected to the can 20 while the other is connected to the other end of wire 23. The pin 12 is located in the can 20 by indentations 22.
Patent GB-1103570-A (GB)
Title: Improvements in coupling means for hydraulic braking systems
Inventor: FINEMAN HAROLD
IPC: B60T13/12
Filed: 1964-05-23
Abstract: 1,103,570. Hydraulic brakes. GIRLING Ltd. 21 May, 1965 [23 May, 1964], No. 21387/64. Heading F2F. In order to operate hydraulic brakes on a trailer vehicle from an hydraulic braking system on a tractor vehicle, an auxiliary cylinder 24 is adapted to be connected to the hydraulic braking system of the tractor, a master cylinder 10 is adapted to be carried by the trailer and to be connected to the slave cylinders of the trailer brakes via an outlet connection 19, and means is provided independent of any towing coupling between the vehicles for detachably connecting the two cylinders together by means of the screwed connection 26, 12, the connection of the two cylinders bringing the pistons 13 and 28 working in the two cylinders 10, 24, respectively, into direct mechanical engagement whereby axial movement of the piston 28 in the auxiliary cylinder 24 by fluid from the braking system of the tractor via a connection 27 effects axial movement of the piston 13 in the master cylinder 10 to displace fluid from that cylinder to the slave cylinders of the trailer brakes. A flexible pipe connection is provided between the auxiliary cylinder and the braking system of the tractor. The bores of the auxiliary and master cylinders may be of different diameters to provide a difference in the ratio of braking applied to the two vehicles.
Patent GB-849888-A (GB)
Title: Method and equipment for measuring the proportion of combustible constituents in a stream of gas
IPC: G01N21/72
Filed: 1959-06-23
Abstract: 849,888. Photo-electric flame detection. HUTTENWERK OBERHAUSEN A. G. June 23, 1959 [July 8, 1958], No. 21427/59 Class 40(3). [Also in Group XI] The proportion of combustible gas in a stream of waste gas in a pipe 2 is measured by means of a photo-cell 6 responsive to the flame at the end of a tube 1 injecting oxygen into the gas stream. The photo-cell may alternatively respond to the radiation of a body placed in the flame.
Patent GB-391754-A (GB)
Title: Improvements in or relating to spindles for textile machines such as spinning, twisting and doubling machines
IPC: D01H7/04
Filed: 1931-07-28
Abstract: 391,754. Spinning &c. machine spindles. MEURS, J. VAN, 7 bis, Rue du Plateau, Clamart, Seine, France. July 28, 1931, No. 21494. Convention date, July 30, 1930. Void [Published under Sect. 91 of the Acts]. [Class 120 (ii).] Spindles of mules, twiners, spinning, twisting, and doubling machines have cast thereon a wharl 2 composed of a material of low density and high resistance, such as vulcanized rubber, synthetic resin, or a material having a cellulose ether base. The spindle is preferably roughened where the wharl is cast, to assist adhesion.
Patent GB-1335744-A (GB)
Title: Tape 'rive mechanisms
IPC: G11B15/58
Filed: 1971-05-19
Abstract: 1335744 Automatic tape loop control HONEYWELL INFORMATION SYSTEMS INC 19 April 1971 [20 April 1970] 21573/71 Heading G3R A signal produced by a detector responsive to the length of a tape loop is combined with a signal dependent on the speed of a tape reel so as to control driving means for the tape so as to control the length of the tape. In Fig.1, magnetic tape 16 containing digital information passes from one reel 12 driven by a series or D.C. compound motor 14 past a record/read head 18 between two capstan drives 20 to another motor driven reel 12. Buffer loops of tape are formed in chambers 22, 24 the pressure in which is reduced by a vacuum pump 32. The pressure in a manifold 36 which communicates with the reduced pressure below the tape and the atmospheric pressure above the tape corresponds to the loop length and determines the position of a diaphragm 42 which deflects a leaf spring 50 of magnetic material relative to opposed semi-conductors mounted on a permanent magnet 54. The relative resistances of the semi-conductors, which may be in a bridge circuit, is thus varied by the magnetic effect and corresponds to loop length. Variation of this relative resistance from one corresponding to a desired length of loop influences a transistor relay circuit (not shown), producing pulses, to vary the firing angle of a SCR controlling the supply to the reel motor which runs in the appropriate direction to correct the loop length. A tachometer generator 70 associated with the reel feeds back a signal dependent on speed to oppose the signal dependent on loop length so that speed is suited to the length of loop. Loop length in chamber 24 may be controlled in a similar manner. Arrangements for fast re-wind, threading and positioning the tape are described.
Patent GB-276338-A (GB)
Title: Improved process for washing textile fabrics
IPC: C11D9/40
Filed: 1927-08-16
Abstract: 276,338. Henkel et Cie Ges. Aug. 17, 1926, [Convention date]. Cleansing-compositions; soaps &c.-In a "lowtemperature " process for washing textiles, urea is enzymatically decomposed in the washing liquid, for instance by urease. Decomposition takes place best between 30 and 70 C., enabling wool, silk and artificial silk to be treated. Dry urea and urease may be added to a detergent consisting of soap, mild alkali (for example a mixture of sodium di-hydrogen phosphate and di-sodium hydrogen phosphate) or the like. Specifications 276,337 and 276,339 are referred to.
Patent GB-149327-A (GB)
Title: Fraud proof bottle
IPC: B65D49/12
Filed: 1920-07-19
Abstract: 149,327. Alampi & Co. June 12, 1919, [Convention date]. Bottles, non-refillable.-The emptying orifice c of a bottle is fitted, during manufacture, with a stopper d of glass, cork, metal, &c. which is retained in position by one or two glass or metallic threads or wires e the ends of which are secured in the sides of the orifice c by a glass " solder." The bottle is filled through an opening b which is afterwards closed by a plug which, when inserted, is flush with the lower surface of the bottle. The charging and discharging openings may be in the side or upper part of the bottle.
Patent GB-446259-A (GB)
Title: Improvements in the production of acetic anhydride
IPC: C07C51/235
Filed: 1934-07-25
Abstract: Acetic anhydride is made by oxidation of acetaldehyde by air or oxygen in presence of an oxidation catalyst and, if desired, a dehydrating agent while maintaining a temperature below that at which the anhydride is hydrolyzed as quickly as formed, then preferably cooling the mixture quickly and separating the water from the anhydride.  The best yields are obtained by effecting the oxidation quickly at relatively low temperatures.  This may be effected by operating under pressure with cooling and supplying the oxygen at the maximum rate at which it can be absorbed. Suitable temperatures are 40--70 DEG  C. and suitable pressures 50--100 lb. above atmospheric or more.  The catalysts may be those known for the production of acetic acid from acetaldehyde but preferably a mixed catalyst is employed such as manganese acetate and an acetate of copper, nickel or cobalt with or without an acetate of nickel, cobalt, tin, lead, cerium, vanadium or uranium. Other salts such as propionates or butyrates may be used instead of the acetates.  A manganese acetate, preferably manganous acetate may be used alone, but with less advantage.  Copper and nickel acetates without manganese acetate will effect the reaction but may produce dangerous quantities of peracetic acid; silver acetate is unsuitable when the acetaldehyde is made from acetylene owing to the danger of producing silver acetylide.  To reduce the danger of hydrolysis the catalyst and the air supplied should be anhydrous, and a dehydrating agent such as calcium sulphate may be present in the reaction mixture.  The best yield is obtained when 70 per cent of the acetaldehyde is oxidized, and 90 per cent of the anhydride may be recovered from the mixture if it is rapidly cooled to 20 DEG  C. or lower and the water quickly separated.  The whole mixture may be distilled under vacuum or the water may be removed by a suitable agent such as calcium sulphate.  The process may be continuous.  In the examples: (1) acetaldehyde is oxidized by air in presence of manganese and copper acetates at 50 DEG  C. and 65 lb. pressure until 70 per cent is oxidized, the mixture being then cooled rapidly to 20 DEG  C. and the water and aldehyde removed by vacuum distillation; (4) the catalyst is manganese and cobalt acetates; (5) the catalyst is manganese and nickel acetates.
Patent GB-154991-A (GB)
Title: Improvements in and relating to incandescent lamps and similar articles
IPC: H01K3/20
Filed: 1919-09-04
Abstract: 154,991. British Thomson - Houston Co., (General Electric Co.). Sept. 4, 1919. Forming electric-lamp bulbs and the like.-In making miniature lamps or other electrical apparatus, the leading-in wires are allowed to rest on the bulb neck, to which an exhaust tube is then sealed; a cool refractory rod is then introduced to maintain or form a passage through the tube and the joint is compressed. Fig. 1 is an elevation and Fig. 2 a side elevation of a machine for carrying out the operation. The bulb 7 is held by suction in an exhausted cup 6 on the tube 5 passing through a pulley 4. The exhaust tube 19 is supported in a spring clamp 18 secured to a standard 17 on the pulley. The refractory rod 31 is supported by a spring 33 resting on an arm 30 secured to a cap 24 which slides on the standard 17 and is supported by a spring 23. The cap 24 is connected by links 25, 26 with pressure jaws 27, 28. After fusion, the cap 24 is depressed until the screw 34 engages the top of the standard 17, thereby effecting introduction of the rod 31 and partial closure of the jaws 27, 28. The .tube 5 may be adjusted in height by a link 8 and rack 10 operated by a hand-wheel 13. The rod 31 is preferably of tungsten, but may be of other metal or of carbon or other non-metal. The bulb may be sealed just above the compressed portion of the neck, no special contraction in the exhaust tube being necessary.
Patent GB-1467996-A (GB)
Title: Copying machines
IPC: G03B27/62
Filed: 1974-05-16
Abstract: 1467996 Projection printing RANK XEROX Ltd 16 May 1974 [18 May 1973] 21807/74 Heading G2A Variable information in the form of a set of plates 11 together with standard information on a sheet 15 is photo-copied at the horizontal copying window 16 of a projection printer with the aid of an attachment comprising an upper horizontal groove 32 along which plates are fed in succession from a plate-supply magazine 12 to an exposure aperture 39, a lower horizontal groove 33 along which plates are fed in succession from aperture 39 to a receiving magazine 14, each plate dropping in turn into the copying position as the previously copied plate is removed, and a reciprocatory transport device which is spring-biased to the advance position, shown, and is retracted by means of a solenoid and which comprises an upper plateadvancing member 34 and a lower plate-retracting member 35 having a resilient claw 36. The supply and receiving magazines are identical and interchangeable and each has a supply/receiving gap 24 between ledges 23 at the top and bottom and a side wall 22, the opposite side being open. Receiving magazine 14 has a concertina spring to allow orderly filling. Each plate 11 has a bevelled trailing edge to allow claw 36 to ride over the plate at the copying position during the advance stroke. Window 16 may be flat or curved, the plates being similarly shaped. A cover (not shown) is placed over window 16 and the portion of the attachment thereabove.
Patent GB-583594-A (GB)
Title: Side register for sheet feeders
IPC: B65H9/10
Filed: 1944-11-07
Abstract: 583,594. Feeding sheets. DEHN, F. B. (Christensen Machine Co.). Nov. 7, 1944, No. 21858. [Class 100 (i)] A side-registering device for sheet feeders of the kind in which the sheets are registered against side guides 11 by feed rollers which grip the sheet intermittently while in contact with the front lays is constructed with two sets of gripping rollers 12<1>, 12<11> : 13<1>, 13<11>, mounted in oscillating arms 20, and so constructed that when the sheet is gripped by the rollers 13, 131 close to the side guide the arms 20 are raised so as to free the sheet of the grip of the rollers 121, 12". This ensures that any marring of the sheet, due to slippage of the rollers while in contact with the side guide, is outside the printing area, and so does not spoil the prints. The sligbt rise given to roller 12<11> when roller 13<11> engages the sheet is shown in Fig. 6. The lower rollers 12<1>, 13<1>, are positively driven, and roller 13<1> is preferably driven more slowly than roller 12<1>. The rollers act through slots in a feed table 6, and crinkling of the sheets is prevented by a shoe 27 carried by the arms 20, and formed with slots through which the rollers 12<11>, 13<11> project. In a modification, Fig. 9, the shoe 27 is replaced by a shoe 30 which has a lost motion connection (rod 34 and aperture 35) with the arms 20, and when the rollers 12<1>, 12<11> are in engagement the shoe is maintained by gravity in a position which is controlled by engagement of a screw 32, Fig. 10, not shown, with a fixed part of the frame.
Patent GB-659029-A (GB)
Title: Improvements in or relating to oil well drilling apparatus
IPC: E21B15/00
Filed: 1949-08-23
Abstract: 659,029. Oil well drilling apparatus. STEVENS, A. H. (Moore Corporation, L. C.). Aug. 23, 1949, No. 21870. [Class 78 (iv)] The apparatus is an improvement of the apparatus described in Specification 598,048, in which a mast 4 is mounted on a steel substructure 1 resting on the ground and straddling a well. To transport the mast a sling 16 is looped round the hook of the travelling block, the sling extending under sheaves 18 to the top of the gin pole 19. The line 6 is tightened and the front legs are disconnected from the shoes 15 and the mast is disconnected from the gin pole. The mast is supported by the shoes 11 and sling 16 while the mast is swung down to the ground. The gin pole 19 has legs 22, 24 hinged together at the top. The legs 22 are hinged to shoes 11 on the substructure 1 and the legs 24 are pivotally mounted between plates 31 disposed between vertical brackets 33 on the substructure. The triangular plates 31 are pivotally connected by pins 34 to the brackets so they can be swung up and down, the gin pole being then vertical or inclined to the vertical. The plates are secured in position by a pin 39 passing through corresponding holes in the plates and brackets. In raising the mast from the prone to the upright position, the mast is swung beyond the balance point and is allowed to rest against the gin pole to which it is then secured by eyebolts 28 engaging brackets 23. Jacks engaging the plates 31 are then operated to swing the plates upward, the locking pins 39 being removed to cause the gin pole to assume the vertical position and to bring the mast into operating position. The holes in the rear corner of the plates register with the holes 38 in the brackets and the locking pins are inserted. The lower front legs 12 of the mast are swung forward and connected to the shoes 15 to support the front of the mast.
Patent GB-718157-A (GB)
Title: Pressure release valves and apparatus incorporating the same
IPC: F16K29/02
Filed: 1952-09-01
Abstract: In the production of melamine, hot reaction gases and liquids formed by continuously supplying molten urea or a mixture of molten urea and ammonia to a reactor tube in which it or the mixture is heated to a temperature between 375 DEG  and 600 DEG  C. and at a pressure between 2500 and 5000 p.s.i., are continuously released through a small diameter orifice (0.0006 to 0.0015 inches) controlled by a continuously rotating needle valve (see Group XXIX).  The hot released gases expand and cool and pass into and through a container in which the melamine solidifies and is collected.
Patent GB-1417354-A (GB)
Title: Process for the pulping of wood chips
IPC: D21C3/22
Filed: 1973-10-09
Abstract: 1417354 Pulping wood chips G A F CORP 9 Oct 1973 [1 Nov 1972 20 July 1973] 22014/75 Divided out of 1417353 Heading D2W Pulp is prepared by cooking wood chips at elevated temperature and pressure with a cooking liquor containing an N-alkyl or N-cycloalkyl lactam in an amount within the range of from- 0.01 % to 10% by wt. based on the total wt. of the cooking liquor. The latter may be alkaline e.g. a Kraft, or soda cooking liquor, or acidic. Preferred lactams are N-cyclohexyl pyrrolidone N-t-octyl pyrrolidone and N-t-butyl pyrrolidone. The invention also comprises an aqueous, alkaline cooking liquor containing sodium hydroxide and an N-alkyl or N-cycloalkyl lactam in an amount within the range specified above. The liquor may also contain sodium sulphide.
Patent GB-1384120-A (GB)
Title: Arc lamp
IPC: H01J61/98
Filed: 1972-05-11
Abstract: 1384120 Lamp caps and holders VARIAN ASSOCIATES 11 May 1972 [13 May 1971] 22062/72 Heading H2E [Also in Division H1] The cap of a gas discharge lamp (see Division H1), comprises a metallic sleeve 28 and a central pin 24 connected to respective electrodes of the lamp and separated by a ceramic cylinder 40. The holder includes a socket 37 to receive pin 24 and prongs 32 which bear against sleeve 28. Ceramic insulation 42 has projections 41 which with cylinder 40 define a labyrinthine passage between the metallic parts at different voltages. A sealing ring 36 is provided on the lamp base. The space 45 can be filled with porcelain.