baber/WOPTO huggingface dataset:
Patent GB-335966-A (GB)
Title: Improvements in the treatment of balata, gutta percha and the like
IPC: C08C3/02
Filed: 1929-06-06
Abstract: 335,966. Smith, W. S., Garnett, H. J., and Dean, J. N. June 6, 1929. Purifying processes.-Modified guttapercha, balata, and like gums for use as electrical insulating material is prepared by selectively extracting crude gutta percha etc. with a solvent capable of acting selectively on the resins at a temperature depending on the nature of the solvent to remove the fluavil and like resins and leave behind resins of the Albane type. Example. Finely shredded gutta percha is extracted with ethyl alcohol at 21‹ C. or with acetone at 3‹ C. until the resins causing a high leakance at audio frequencies at low temperatures have been removed. Specification 307,390 is referred to.
Patent GB-1221263-A (GB)
Title: Improvements in or relating to conveyor systems
IPC: B65G47/49
Filed: 1969-04-03
Abstract: 1221,263. Pneumatic despatch system. SIEMENS A.G. 3 April, 1969 [8 April, 1968], No. 17502/69. Heading B8A. In the pneumatic distribution of shuttles between input stations S31, S32, S33 and S34, and output stations E31, E32, E33 and E34 the shuttle is inserted at say input station S32, the operator operating selector device W32 to register the destination of the shuttle at central station ZS. Additionally the shuttle is permanently marked with a fixed code to identify itself. When the shuttle arrives at position A3 it is sensed and the input is fed into central station ZS which thereupon operates the distributer ZM so that the shuttle is fed into the correct output line and arrives at output station E32 where it is discharged.
Patent GB-797502-A (GB)
Title: An electrolytic process for purifying a solution of alkali aluminate with simultaneous recovery of metallic gallium and vanadium compounds
IPC: C01F7/02
Filed: 1956-06-06
Abstract: Sodium aluminate lye, for example from the Bayer process, are purified from iron, chromium, vanadium and gallium by electrolysis using a stirred mercury cathode.  Iron, chromium and vanadium compounds are precipitated and metallic gallium is deposited in the mercury from which it is extracted with a solution of caustic soda yielding a solution of sodium gallate.  Specifications 671,356 and 797,501, [Group XXXVI], are referred to.
Patent GB-298516-A (GB)
Title: Improvements in tubular locks
Filed: 1927-07-01
Abstract: 298,516. Bowl, W. E. July 1, 1927. Night-latches and like spring locks.-In tubular locks, a spring-pressed latch-bolt 16 is carried by a lazy-tongs 14 actuated either by a radial projection 8 on the revolving- barrel lock 7 or by a lever 19 engaged by a pin 21 which is operated by a hand-lever 24. The bolt 16 has a cylindrical body 15 which slides on guides 18 carrying the springs 17 and has a recess 29 engaged by the cranked end of a pin 26 used to hold the bolt in open position, the pin engaging behind the body 15 to hold the bolt closed. The bolt-mechanism has a projection 5 for removal from the tubular casing.
Patent GB-480777-A (GB)
Title: Preparation of synthetic resins
IPC: C08G75/22
Filed: 1936-06-24
Abstract: The content of tertiary olefines (i.e. olefines having two monovalent alkyl radicles attached to a double-bonded carbon atom) in olefinic mixtures is reduced to 20 per cent or less, and the mixture reacted with sulphur dioxide to form resins suitable for use as film-forming substances or as lacquers, e.g. dissolved in nitromethane.  Olefinic mixtures may be obtained by pyrolysis of hydrocarbon gases, petroleum, or coal, and by dehydrogenation of hydrocarbons; paraffins present may be removed; and tertiary olefines, e.g. 2-methylpropene, 1 : 1-methylethylethylene, trimethylethylene, may be removed by absorption in cold dilute sulphuric acid or by selective polymerization, e.g. by hot diluted sulphuric acid, by the material known under the Registered Trade Mark "Floridin," by aromatic sulphonic acids (e.g. benzene-, toluene-, and xylene-sulphonic acids), by strong solutions of phosphoric acid, or by strong solutions of zinc bromide in methyl, ethyl, or any propyl, butyl, or amyl alcohol. A mixture of all the butanes and butenes may be treated at 100 DEG  C. with p-toluenesulphonic acid, 85 per cent phosphoric acid, or zinc bromide in alcohol, the unpolymerized olefines being then obtained by distillation or decantation; olefines of four or more carbon atoms may be dissolved from a hydrocarbon mixture by strong sulphuric acid and the acid layer separated, diluted, and heated, in order to remove tertiary olefines by polymerization. Specification 11635/14, [Class 2 (iii)], is referred to.
Patent GB-544900-A (GB)
Title: Improvements in tension control devices for electrically driven reels
IPC: B65H59/38
Filed: 1940-12-16
Abstract: 544,900. Automatic control systems for electric motors. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 16, 1940, No. 17709. Convention date, Dec. 16, 1939. [Class 38 (iv)] [Also in Group XXXVIII] Tension. To maintain constant tension, e.g. in winding wire, an induction voltage regulator 15 is adjusted by a loop of the wire and varies the grid potential of valves 18, 19 in series with the armature 17 of the reel motor. To prevent hunting, a condenser 26 applies an opposed voltage in the biasing circuit. The condenser is charged through a resistance 27 by the potential across a resistance 23 in the motor circuit.
Patent GB-768097-A (GB)
Title: Improvements in or relating to wrought articles made of aluminium base alloys
IPC: C22C21/08
Filed: 1954-06-21
Abstract: A wrought article is composed of an aluminium base alloy having the composition .Cu.0.6 - less than 2.per cent .My.0.7 - 2.per cent .Si.0.6 - 2.per cent .Al the balance...  The alloy may also include one or more of the following grain refining elements .Cr.0.10 - 0.4.per cent .Mn.0.40 - 1.2.per cent .Ti.0.02 - 0.3.per cent .Be.0.001 - 0.01.per cent and also one or more of Mo, W, Co, Zr, B and V in the proportion normally used for grain refining.  The alloy may be solution treated at above 940 DEG C. but below the temperature of incipient fusion, quenched rapidly and aged at 300-400 DEG F. for about 24 hours.
Patent GB-1422907-A (GB)
Title: Hardening of polyepoxides
IPC: C08G59/42
Filed: 1974-04-25
Abstract: 1422907 Curing epoxy resins BAYER AG 25 April 1974 [26 April 1973] 18138/74 Heading C3B A curable composition comprises: (I) a polyepoxide, (II) one or more cyclic polycarboxylic acid anhydrides and as catalyst a mixture of (III) a Zn compound and (IV) an amine which contains at least one stearyl group attached to nitrogen. I may be a polyglycidyl ether of bisphenol A, bis-(N-epoxypropyl)aniline, N,N<SP>1</SP> - dimethyl - N,N<SP>1</SP> - diepoxypropyl - 4,4<SP>1 </SP>- diaminodiphenylimethane, N - diepoxypropyl - 4 - aminophenyl glycidyl ether or hexahydrophthalic acid glycidyl ester. II may be tetra- or hexa-hydrophthalic anhydride or methyl substituted derivatives thereof or methyl-endomethylene-tetrahydrophthalic anhydride. III may be a zinc salt or ZnO, e.g. the liquid forms of zinc octoate or naphthenate commercially available. IV may be stearylamine, methylstearylamine or methyldistearylamine; stearylamines containing aromatic groups are also referred to. The compositions remain workable for over 48 hours at 22‹ C. but cure rapidly on heating, e.g. at 60-250‹ C.
Patent GB-570091-A (GB)
Title: Improvements in flow testing apparatus
IPC: F01P11/00
Filed: 1943-11-03
Abstract: 570,091. Liquid-flow meters. WADE, E. E. S., and JONES, S. A. Nov. 3, 1943, No. 18202. [Class 69 (i)] Means for testing the flow through tubular assemblies such as radiators for internalcombustion engines, comprises a hollow column fed with water to maintain a constant head therein, a launder or tank at the top of the column to take the overflow therefrom, a funnelshaped conduit connecting the foot of the column with a stop-cock or teat valve, and a union through which the water flows from the valve through the article to be tested and thence discharges into a measuring tank. As shown, a rectangular column 1 is fed with water through a pipe 27 with valve 26 so as to maintain a constant head which may be adjusted by a movable weir 21, overflow passing through tank 2 and pipes 22, 23. A funnel-shaped conduit 3, shaped to give constant acceleration of flow, connects the column, through valve 4 and union 5, to the article to be tested, the article being supported on a stand 8 and discharging into a tank 6. A clock 9 and gauges may be mounted on the column, and a differential manometer may be connected to the outlet side of the valve 4 and the centre of the inlet to the conduit 3, or a direct reading may be obtained by a manometer tube 14 and an internally illuminated scale 18, both of which are inclined and carried by an internallyblacked box 19. The valves 4, 26 may be operated by the clock mechanism. The measuring tank 6 also has an inclined scale and sight-glass 30.
Patent GB-694650-A (GB)
Title: Improvements in or relating to variable ratio power transmission devices
IPC: F16H15/50
Filed: 1950-07-24
Abstract: 694,650. Variable-speed friction gear. HODGKINS, H. W. HASTINGS-. Oct. 15, 1951 [July 24, 1950], No. 18477/50. Class 80 (ii). A continuously-variable gear, Fig. 1, comprises planetary balls 12, mounted on trunnions 16 in a driving casing 10, engaging a frustroconical disc 14 on an output shaft 22 and a similar disc 15 which is clutchable at 25 to a stationary frame 20. The velocity ratio is varied from a positive to a negative value, through zero, by inclining the trunnions 16 to the shaft 22, by means of bell cranks 17, a sleeve 18 and linkwork 19. An idle outer race 26 maintains the balls 12 against the discs 14, 15. A further gear, Fig. 2, comprises planetary balls 12 engaging a driving disc 14 with a conical surface, a driven disc 15 with a spherical surface and a split outer race 26a, 26b carried by a flywheel 11 and urged together by adjustable springs 27. Springs 35, 36 urge the discs 14, 15 together. It is stated that flywheel inertia provides the reaction torque until at a certain speed the balls 12, moving outwardly under centrifugal force, allow the spring 36 to move an annular gear 33 on the driven shaft 22 into mesh with stationary idle gears 32, which mesh a pinion 34 on the flywheel 11, thereby giving a fixed ratio reduction.
Patent GB-1285385-A (GB)
Title: Process for the manufacture of methyl or ethyl chloride from methyl or ethyl acetate
IPC: C07C17/093
Filed: 1970-04-17
Abstract: 1285385 Methyl and ethyl chloride FARBWERKE HOECHST AG 17 April 1970 [18 April 1969] 18519/70 Heading C2C Methyl and ethyl chloride are prepared by reaction of methyl or ethyl acetate with hydrogen chloride in the vapour phase at 120-360 C. and at a pressure of 0 to 20 atmg. using as catalyst silicic acid having a surface area of 20 to 800 m.<SP>2</SP>/g. and an average pore diameter of 5 to 2000 Angstroms, and containing 5 to 15% wt. of zinc chloride. The catalyst may be fixed or fluidized and may be in the form of granules, balls or rods. The starting material may contain the corresponding alcohol and water, which may be removed by pre-treatment with acetyl chloride. Unreacted ester and hydrogen chloride may be recycled. Acetic acid is also obtained. Comparative examples disclose the use as catalyst of (a) carbon and zinc chloride and (b) aluminium oxide with aluminium chloride and cupric chloride.
Patent GB-252570-A (GB)
Title: Process for isolating alcohols or phenols from mixtures
IPC: C07C37/86
Filed: 1925-07-21
Abstract: 252,570. Deppe S÷hne, A., and Zeitschel, F. O. July 21, 1925. Alcohols; phenols; esters. - Alcohols and phenols are separated from mixtures in which they occur by treating the mixtures with boric acid, arsenious acid, antimonious acid, or phosphorous acid, or with the anhydride of one of these acids, or with the double anhydride of one of these acids with the anhydride of an organic acid, e.g. acetic, propionic, butyric, valeric, benzoic, or phthalic acid. An ester of one of the first-named acids is thereby obtained, which yields the alcohol or phenol on treatment with dilute alkalies. By regulating the amount of boric acid &c. employed, alcohols may be separated into various classes (primary, secondary, and tertiary). In examples, (1) menthol is obtained from saponified Japanese peppermint oil, (2) geraniol from citronella oil, (3) linalool from Shiu oil, and (4) benzyl alcohol from a mixture with benzyl acetate, by treating with the double anhydride of boric and acetic acid. (5) terpineol and borneol are obtained from a camphor oil fraction by treating with boric acid, (6) mixtures of geraniol and terpineol, and (7) borneol and terpineol are separated by treating with boric acid, (8) terpineol is separated from a mixture with geraniol and borneol, by treating with boric acid, and (9) menthol is obtained from Japanese peppermint oil by treating with arsenious anhydride.
Patent GB-109369-A (GB)
Title: Appliance for Clearing and Restoring Damaged Threads of Fitted Studs and the like.
IPC: B23G5/04
Filed: 1916-12-29
Abstract: 109,369. Cammell, Laird, & Co., and Carter, G. J. Dec. 29, 1916. Stocks and dies.-Consists in a device for restoring the damaged screw-threads on studs &c. As shown, a pair of dies D, D<1> are held in a non- circular opening in a stock or casing C and are adjusted on to the lower portion of the screwed part of the stud &c. by a set-screw E or by a scrollcam. The disks are arranged to cut while being screwed off the stud. The casing has a square or other head to receive a spanner, or may have pivoted to it a lever which rotates it by means of ratchet-gear.
Patent GB-311973-A (GB)
Title: Improvements in or relating to methods of and means for securing the soles to the uppers of boots, shoes and similar footwear
IPC: A43B13/32
Filed: 1928-06-27
Abstract: 311,973. Radburne, J. W., (Fresko- Kemisk-Teknisk Fabrik). June 27, 1928. Drawings to Specification. Connecting uppers to soles.-The waist part or shank of the sole is attached to the corresponding portion of the upper by adhesive, and the sole proper, from the ball to the toe is fastened in position by sewing or nailing. Preferably, the waist portion of the sole is narrower than usual and is chamfered or bevelled off to fit closely and flush with the upper. Before attachment, the upper surface of the side margins of the waist portion of the sole is grooved or scored as described in Specificatin 262,308. The inner sole may be gemmed with canvas or similar material between the ball and the toe of the upper.
Patent GB-1240755-A (GB)
Title: Improvements in or relating to cutting machines
Inventor: BENTFORS KARL WALDEMAR
IPC: D06H7/02
Filed: 1969-04-11
Abstract: 1,240,755. Cutting moving sheet. K. W. BENTFORS. 11 April, 1969, No. 18669/69. Heading B4B. A machine for cutting moving sheet or web material transversely comprises a first carriage 12, movable over a range of the web path in synchronism with the web and having runways 13, 14 mounting a second carriage 26 movable transversely over a range of the first, the carriage 26 having runner wheels 23, 24 and a rotary cutter 29 driven by an electric motor 27, a switch being operated by the second carriage 26 on reaching either end of its movement to stop the motor 27. V-belts 6 or chains (not shown), are driven at the same speed as the web feed, and the carriage 12 is movable along runways (2), 3 by engagement of the belts 6 against carriage members 16 by electromagnetic clamps 19 under photo-cell control. The web is fed over a plate 20, the transversing cutter 29 co-operating with a rule 21; a weight 22, or spring means, &c. (not shown) returns the carriage 12 to its initial position after the stroke, the transversely movable carriage 26 operating from alternate ends of its path during successive strokes.
Patent GB-1188711-A (GB)
Title: Improvements in or relating to Pipe Coupling Systems
Inventor: GACHOT JEAN
IPC: F16L55/00
Filed: 1967-04-24
Abstract: 1,188,711. Pipe joints; stopping pipes; valves. J. GACHOT. 24 April, 1967 [28 April, 1966; 9 Sept., 1966], No. 18673/67. Headings F2G, F2P and F2V. [Also in Division G1] In a pipe coupling arrangement, wherein each of a set of coupling members 6 is clampable between the end flanges of pipe elements 1 by tie bolts 4a, 4b which extend between the flanges and around the respective interposed coupling member without passing therethrough, each coupling member is provided with projecting annular sealing rings at its ends, is adapted to seat or bear longitudinally on two adjacent tiebolts 4a, and is laterally removable from between the flanges on slackening of the bolts without removal thereof. As shown, the tie-bolts 4b are widely-spaced so that each coupling member may be removed therebetween on mere slackening of the bolts. Each coupling member has a different internal construction. In the embodiment of Fig. 2, the coupling member is provided with a transverse diaphragm forming separate chambers 10a, 10b, chamber 10b having a threaded part 15 for reception of a branch-pipe, plug or measuring instrument, such as a manometer or thermometer. The coupling member 6A of Fig. 3 (not shown) provides a straightthrough connection and a wall-tapping for a measuring instrument. The coupling member of Fig. 5 (not shown) contains a filter element 42. The coupling member of Fig. 4 (not shown) contains an orifice plate and suitable manometer tappings whilst the coupling members of Figs. 7 and 8 (not shown) are made. of transparent plastics or heat-resistant glass and contain balls of plastics material, e.g. polytetrafluorethylene, to give a visual flow indication. The coupling member of Fig. 9 contains a disc valve 81 mounted on a stem 71 slidably guided in a threelegged spider 73, the disc being resiliently urged against a valve seat 82 by a spring 83. In the coupling member of Fig. 11 (not shown), a non-return ball valve comprises a ball positioned between a valve seat and stops formed by curved strips bent inwardly from the walls of a sleeve positioned in the bore of the coupling member. In Fig. 12, two coupling members 7a, 7b are rigidly interconnected, member 7a permitting flow between the coupling elements when disposed therebetween and member 7b preventing flow between the elements when replacing member 7c. The tie bolts may be provided with shoulders intermediate their ends to limit compression of the sealing rings, Fig. 14 (not shown), and may be provided with quick-connect or release cam-ended levers 95 pivoted to the bolts at one end.
Patent GB-631282-A (GB)
Title: Improvements in and relating to radio frequency power measuring apparatus
IPC: G01R21/00
Filed: 1947-07-16
Abstract: 631,282. Power measurements. BRITISH THOMSON-HOUSTON CO., Ltd. July 16, 1947. No. 18987. Convention date, Jan. 1, 1943. [Class 37] [Also in Groups XL (b) and XL (c)] An H.F. source 12 is coupled over adjustable attenuators 14, 15 to a high-level power-meter and a low-level power absorbing device 18, so that the low-level power delivered to device 18 can be determined from the meter and attenuator readings. The power-meter is shown as comprising an element 40 heated by the H.F. power so that its resistance changes and is measured at 41 to indicate power. The attenuators 14, 15 are preferably identical and each may consist of an pipe 20 whose length is adjustable by an adjustable closure 22 consisting of an annular slide 22 containing a coaxial line 23 ; a coaxial line 16 having probes 27, 28 may couple the source 12 to the attenuator. The invention is applied to the measurement of noise level in a wirelsss receiver 11 ; with no input, the reading of a power-meter in the output of the receiver is taken, and then the input is adjusted until the meter reading is doubled, the level of the input then being equal to the noise level ; preferably, however, the meter is a null device and the amplifier 46 adjusted to give a null reading ; a 3 decibel loss is introduced by a switch 48, thus reducing the power output by one half, and the attenuator 15 is adjusted to make the meter read null again, when the noise level is equal to the power delivered by the attenuator 15.
Patent GB-498412-A (GB)
Title: Improvements in and relating to processes and apparatus for the production of ice and for cooling liquids
IPC: F25C1/08
Filed: 1937-07-08
Abstract: 498,412. Ice - making; cooling chambers. WUSSOW, R. E. W., and FECHNER, F. W. July 8, 1937, No. 19005. [Class 29] In apparatus for the production of ice or cooling down a liquid comprising evaporator cells 3 open at both ends round which refrigerant flows and which are immersed in a bath 22 of the liquid to be cooled or frozen, air or part of the liquid being injected into the cells through nozzles 26 to promote circulation, the evaporator cells are made of separate pressure-tight double tubes, the refrigerant flowing through the annular spaces thus formed. The compressor 1 discharges refrigerant through condenser 2, a refrigerant cooler 7, a jacket 8, and a reducing valve 4 to a container 5. From thence the refrigerant passes to the evaporators 3 and then through connection 12 to compressor 1. In order to thaw out the ice blocks the compressor 1 is reversed so that evaporators 3 act as condensers. This effect is supplemented by pipes 18 for heating medium. The blocks rise to the surface of the liquid and are removed by a conveyor 24. In an alternative construction the refrigerant is led through a coil within container 5 prior to being admitted thereto instead of through a jacket 8. The evaporators 3 also may have the liquid sprayed into them instead of being immersed in a bath. Alternatively the liquid in the bath is not frozen and articles to be cooled are moved through the bath by a chain conveyer.
Patent GB-614952-A (GB)
Title: Electric thermometer circuit
IPC: G01K7/20
Filed: 1946-06-26
Abstract: 614,952. Measuring temperature electrically. LE MAY, C. A. G., and HALSTEAD, P. E. June 26, 1946, No. 19044. [Class 40 (i)] [Also in Group XXXVI] In an electric thermometer a low resistance element 12 is connected to the secondary winding of a step-down transformer 5 and current fed through the primary 7 from a power transformer 1 is rectified and fed to one arm of a differential meter 11. The second arm of this meter is supplied through a further rectifier 10 and a compensating resistance 9 from the same transformer 1. The variation of the resistance 12 with temperature is reflected in the current change in the winding 7 and is indicated in the reading of the meter 11. The resistance 9 is preferably made to have the same variation with temperature as the transformer 5.
Patent GB-945723-A (GB)
Title: Improvements in or relating to refrigerators and heat pumps
IPC: F25B9/14
Filed: 1961-05-26
Abstract: 945,723. Refrigerating. PHILIPS GLOEILAMPENFABRIEKEN N.V. May 26, 1961 [May 30, 1960], No. 19095/61. Heading F4H. A non-condensing system comprises two units, the first consisting of a compressor 10 with exhaust and inlet valves 11, 12 and the second having a cylinder 14 in which works a doubleacting piston 15, the space 23 beneath which receives gas through inlet valve 28 from the first unit and compresses it and the space 22 above which receives gas from the space 23 and acts as an expansion space. Gas flows from space 23 to space 22 via a non-return valve 29, a cooler 32, a controlled valve 26, a regenerator 24 and a finned assembly 25 dissipating useful cold. The inlet of compressor 10 receives gas from space 22 through controlled valve 27 and pipe 33. Exhaust pipe 30 of compressor 10 includes a cooler 31.