baber/WOPTO huggingface dataset:
Patent GB-520442-A (GB)
Title: Mechanical calculator
IPC: G06G1/12
Filed: 1938-10-20
Abstract: 520,442. Calculating-apparatus. ENGLISH ELECTRIC CO., Ltd., and RICHES, A. J. Oct. 20, 1938, No. 30421. [Class 106 (i)] Comprises a slide rule particularly for use in electrical calculations involving finding such values as tan # - tan #1 . An evenly divided scale is marked off along the bottom edge of the slide 1 at C, while a special scale is marked off on the upper edge of the slide at B, such that any reading on the lower scale is the tangent of an angle of which the cosine is given immediately above the reading on the upper scale. For example, given that the existing power factor is 0.7 and it is required to improve it to 0.85, the value 0.7 on scale B, is set to coincide with index 2a. A cursor 3 is then set at 0.85 on scale B 1  and the zero on scale C, set to agree with the cursor line. The value 0.4 or 40 per cent is now read off on scale C, at index 2a. It will thus be clear how to calculate the resulting new power factor given that the added reactive kilo-volt-amperes is a certain percentage of the kilowatt load. The scales B, C, may be placed on the back of the slide of the usual logarithmic type or on a circular slide rule or watch calculator. The scale B, may be on the slide and C 1  on the stock or vice versa. Another form comprises a graduated rule without a slide, two cursors being provided and means for locking them together to move as one unit on the rule. In a further form for finding the sum or difference of the two tangents, the evenly divided scale represents tangents and the other scale angles.
Patent GB-533752-A (GB)
Title: Improvements in and relating to pipe cutters
IPC: E21B29/00
Filed: 1939-11-21
Abstract: 533,752. Internal pipe cutters. CUTHILL, J., and OIL WELL ENGINEERING CO., Ltd. Nov. 21, 1939, No. 30517. [Class 83 (iv)] A pipe cutter for severing well pipe comprises a body 2, 5 suspended in the well pipe 1 and fitted with pivoted cutters 22 having inwardly directed cam surfaces 28 engaged by means on a hydraulic piston 8 movable to cause outward movement of cutters to sever the pipe. The parts 2-5 of the body are screwed together at 6 and the part 5 forms the cylinder of the twopart piston 8, 10, which is fitted with a ball valve 15. A spring 11 normally maintains the piston in raised position. The body is longitudinally slotted to accommodate the cutters 22 which are hinged on a common pin 23. A spring 25 of U-shape normally maintains the cutters in collapsed position and a cross pin 26 prevents excessive outward movement of the cutters. In operation the cutter is lowered into the well and water pumped in to move the piston downwards. This causes a roller 27b on the piston to slide down the cam surfaces 28 while the tool is rotated until the pipe is severed. If desired the pump pressure may be further increased after the pipe is severed so as to rupture a closure disc 34 and allow liquid to escape from the interior of the pipe. If, after severing, the cutters fail to return a movement of the tool in either direction will cause the inclined surfaces 29 at the cutting edge to assist in collapsing the cutters.
Patent GB-933081-A (GB)
Title: Production of olefin polymers
IPC: C08F10/00
Filed: 1961-08-24
Abstract: Polymers of mono-olefinically unsaturated hydrocarbon monomers are made by contacting one or more of the monomers with a catalyst comprising an organo-metallic compound, or a hydride, or a metal of Group I, II, or III of the Mendel<\>eeff's Periodic Table, a compound of a metal of Group IV, V, VI, and VIII, and an acetylenic alcohol or an acetylenic ether in an amount of 0.01 to 0.5 mol. per mol. of the total catalyst composition.  Optionally the catalyst system may include an organic halide or a metal halide.  The polymerization is generally effected in the presence of a conventional hydrocarbon diluent.  Monomers mentioned are propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 3-methyl-1-pentene, 4-methyl-1-pentene, 3,3-dimethyl-1-butene, styrene, and 2-methylstyrene.  The Specification contains long lists of suitable catalyst components. Exemplified catalyst systems are triethylaluminium, titanium trichloride, and 2-propyn-1-ol, or 2-t-butylethynyl dimethyl carbinol, or 2-butyn-1,4-diol.  The polymers have a high isotactic content.
Patent GB-820101-A (GB)
Title: Improvements relating to relief valves
IPC: F16K17/10
Filed: 1957-09-30
Abstract: 820,101. Fluid-pressure servomotor-control systems. ALLAM, P. S. (Merit Engineering Inc.). Sept. 30, 1957, No. 30529/57. Class 135. A relief valve assembly has a spring closed main valve member 11, slidable in a sleeve 19 secured in a valve body by a screwed cap 39, which is normally seated on an end 33 of the sleeve to obturate fluid flow from a relief port 17 through radial ports 24 in the sleeve, through an annular passage 35 around the valve stem, past the valve seating 33 and then through radial ports 44 in the plug to a return port 18. A spring-loaded pilot valve member 12 is coaxially slidable within the valve member and normally closes a port 30 in the bottom of the sleeve to prevent fluid flow from the inlet via grooves 27<SP>1</SP>, 32 in the outer side of the sleeve to a cylinder 29<SP>1</SP> formed below a piston-like end of the main valve member. When the valve is closed inlet pressure acting on annular faces 36, 37 of the main valve member balances this member, but when the inlet pressure exceeds a predetermined amount it causes the pilot valve to lift and admit pressure fluid to the cylinder 29<SP>1</SP> to open the main valve. The cylinder 29<SP>1</SP> exhausts via the passage formed between the pilot valve portion 50 and a sleeve 34 mounted in the main valve member and grooves 49 formed along the guided portion of the pilot valve member to join the other flow path through ports 44 to the return port 18.
Patent GB-189080-A (GB)
Title: Improvements in automatic compass controlled indicators
IPC: G01C17/36
Filed: 1921-08-11
Abstract: 189,080. Elmslie, A. N. W. Aug. 11, 1921. Draivings to Specification. Steering automatically.-According to the Provisional Specification, in order to correct any deviation of a ship from a set course, a brush contact, mounted on the end or ends of a magnetic needle moving over a divided contact ring, controls circuits containing electromagnets acting directly or through multiplying gear upon fhe valves of pneumatic cylinders which act upon the rudder. The contact ring is adjustable to set the course.
Patent GB-794059-A (GB)
Title: Metallisable monoazo dyestuffs of the benzene-azo-8-hydroxyquinoline series
Inventor: LEGG NORMAN
IPC: C09B45/18
Filed: 1955-10-26
Abstract: The invention comprises metallizable dyestuffs of formula: <FORM:0794059/IV (b)/1> where X is H or an alkyl or alkoxy group, R is H or an alkyl or hydroxyalkyl group and R1 is an alkyl, hydroxyalkyl or substituted or unsubstituted phenyl group.  They are made by diazotizing appropriate diamines and coupling with 8-hydroxyquinoline, preferably in a neutral or faintly alkaline medium.  Specified diamines are N,N-dimethyl-, diethyl- and di-(b -hydroxyethyl) - 4 - phenylenediamines, 4 - amino - and 3 - and 41 - methoxy - 4 - amino - diphenylamines, 2 - ethoxy - 4 - diethylamino - aniline and 5 - dimethyl - and diethyl - and (N - ethyl - N - b  - hydroxyethyl) - amino - 2 - toluidines. The dyestuffs are applied, preferably in dispersed form, to synthetic textile materials, e.g. cellulose esters, polyamides and polyacrylonitriles, in conjunction with a metallization process. Cobalt, nickel, chromium and copper yielding compounds are mentioned the latter being preferred.  Red shades are obtained. Examples are provided illustrating the preparation of dyestuffs from the above listed components and their use in dyeing processes.  Specification 761,776 is referred to.  The Provisional Specification refers to Specification 780,509 and additionally states that R and R1 may be any aryl radicle.
Patent GB-443010-A (GB)
Title: Improvements in the treatment of glauconite
IPC: C01B33/46
Filed: 1935-11-05
Abstract: In a process for increasing the base-exchange value of glauconite, the preferably washed and cleaned initial material is treated with acid to effect drastic chemical change of the surface of the granules without removing non-siliceous matter from the interior, and then washed and, preferably after drying, treated with a solution to impregnate it with sodium alumino-silicate. Sulphuric acid of 10--35 per cent strength may be used for the acid treatment, which may last 1--2 hours at 100 DEG  C., and the impregnating solution may be one containing caustic soda and sodium aluminate, or impregnation be effected by successive treatments with solutions of aluminium sulphate and caustic soda. When washing of the acid-treated glauconite is effected with liquids containing calcium or magnesium such as hard water, sodium chloride is added during the impregnation step.  The treated glauconite may be stabilized by successive washings with weak solutions of sodium silicate and aluminium sulphate with intermediate washings with water.
Patent GB-231562-A (GB)
Title: Improvements in carburettors for use in connection with internalcombustion engines
IPC: F02M9/08
Filed: 1923-12-06
Abstract: 231,562. Cox, A. Dec. 6, 1923. Spray carburettors.- In a carburettor of the kind described in Specification 124,061, the nozzle b, which discharges into the branch air passage c opening laterally into the main air passage i, is utilized as a main nozzle, and a pilot nozzle d is provided for delivering mixture into the main passage on the engine side of the throttle valve. The main and pilot nozzles b, d are removably mounted in chambers in a body a attached to a seat a<1> on the outer end of a fixed ported sleeve a<2>; the sleeve a<2> surrounds the primary air passage c and contains a. ported air valve carried by the barrel throttle valve f. The pilot nozzle d receives fuel from a conduit d<3> branched from the main supply conduit e<2>, and comprises a calibrated nipple at the bottom of a plug d<2> which is provided with a central air inlet passage, and with mixture outlet ports d<6> opening into an annular space d<7> surrounding the base of the nozzle; this space communicates through an external conduit e with an annular or sector-shaped passage g formed in the throttle valve or throttle valve casing, from which the mixture is supplied to a passage h in the throttle valve, the delivery port h<1> of this passage opening into the main passage when the throttle is closed. Additional pilot delivery ports h<1> may be provided in the throttle valve, which ports come into action on the initial opening of the valve.
Patent GB-367742-A (GB)
Title: Improvements in or relating to quilters for sewing machines
IPC: D05B29/00
Filed: 1931-11-05
Abstract: 367,742. Sewing-machines. HECK, V., 3A, Monchhofstrasse, Heidelberg, Germany. Nov. 5, 1931, No. 30674. [Class 112.] Presser-feet; work guides.- A presser foot 1 has two limbs 2, 3 which are horizontally and independently displaceable from the centre foot 1 and are rockable about the horizontal axes. The limb 3 is secured to a rod 8 which fits in a tube 5 to which is secured the other limb 2. The limbs are held in adjusted position by a thumb screw 9. The device is intended for use in quilting, one of the limbs being arranged to run along the edge of the cloth or along a seam.
Patent GB-468494-A (GB)
Title: Improvements in thermal electrical cut-outs and appliances embodying such cut-outs
IPC: H05B1/02
Filed: 1936-11-10
Abstract: 468,494. Thermal switches. PIDDOCK, F. W., and LORCH, W. Nov. 10, 1936, No. 30686. [Class 38 (v)] A thermal cut-out for an electric kettle &c. comprises a member g pivoted at h and carrying a contact rod g<1> adapted to bridge two spring contacts f<2>, f<3>, the member g being held in this position against the action of a spring by a U-shaped bimetal detent j<1>. On overheating, the detent j<1> releases the contact arm which flies to the open position. The device may be mounted in a plug casing b attached to the kettle, the contacts f<2>, f<3> being in the circuit between a pin c and a socket d connected to the resistance wiring m. The other pin c and socket d are connected by the pin h which forms the pivot of the member g.
Patent GB-261200-A (GB)
Title: Improvements in or relating to chairs
IPC: A47C4/30
Filed: 1925-12-05
Abstract: 261,200. Schneider, J. J. H. Dec. 5, 1925. Seat frames; spring supports; bottoms. - A chair is provided with a front bar 4 which comprises a resilient member. The rear bar 6 may be of the same construction, and each bar may be formed of a spiral spring, a number of connected spiral springs, or rubber. The side bars 1, 3 may be connected by a rigid U-shaped member 18 which may be pivoted directly to the bars 1, 3 as shown in Fig. 4, or may pivot upon pins 24 which also support the bar 4. The bars 4, 6 may pass through hems in the ends of the seating 13, and may be detachably connected to the side members by pins 17.
Patent GB-603024-A (GB)
Title: Improvements in internal combustion engines using liquid fuel or gas alternatively
IPC: F02B11/02
Filed: 1945-11-16
Abstract: 603,024. Fuel-injection pumps. HENDERSON, A., McNAUGHT, J. A., and REBBECK, SIR F. E. Nov. 16, 1945, No. 30767. [Class 102 (i)] [Also in Group XXVII] In an engine which operates alternatively with liquid fuel or gas and has mechanism for injecting liquid fuel into the cylinder, additional or auxiliary mechanism is provided including an auxiliary liquid fuel pump for supplying the minimum quantity of liquid fuel to start combustion when working with gas. When operating on gas a small quantity of fuel is inj ected into the combustion chamber by a pump 16 and injector 12. The pump 16 is brought into operation by opening a ball valve 4 and cock. The cock 3 is operated by a lever 5 which at the same time moves the control mechanism 7 of the pump 2 to reduce the delivery of the pump to the quantity required for operation of the pump 16. The pump 2 then supplies fuel through a pipe 20 into a chamber 17 and past a non-return valve 11 to. a chamber 19. The pressure in the chamber 17 pushes down a piston 10 and rod 18, closes the inlet for fuel into the chamber 19 and forces fuel from this chamber through the injector 12. The fuel to the pump 16 passes through the main injector 1 and cools it.
Patent GB-681336-A (GB)
Title: Label and foil applying apparatus
IPC: B65C9/36
Filed: 1950-12-18
Abstract: 681,336. Labelling machines. ERMOLD, CO., E. Dec. 18, 1950. [Dec. 20, 1949] No. 30804/50. Class 73. Wiring means for a labelling machine comprises brushes, one of which is positively rotated during the wiping operation. A brush 12 is mounted on a post 20 attached to an arm 21 pivoted at 22 to a cantilever arm 23 supported on a fixed post 25. A roll 20<SP>1</SP> on the top of the post 20 is engaged by a yoke 26 attached to a slide bar carrier 18 and a radius arm 27 secured to the post 20 is connected by a link 28 to a fixed lug 29. A bottle 10 with a label L held in position by a gripper 14 is advanced in the direction 13 and the slide bar 18 is moved to the left by a crank lever 16 so that the brush 12 moves transversely of the path of the bottle and also has a component of movement with the bottle thus engaging it over a period with constant pressure. At the same time the lever 27 and link 28 causes the brush to be positively rotated anticlockwise. A brush 11 rotatably mounted on a post fixed to a slide 17 is previously advanced transversely to wipe the other side of the label L.
Patent GB-1304956-A (GB)
IPC: A01D23/00
Filed: 1970-06-25
Abstract: 1304956 2,2 - Dimethyl - 1,3 - propanediol monohydroxy pivalic ester BADISCHE ANILIN- & SODA-FABRIK AG 25 June 1970 [26 June 1939] 30826/70 Heading C2C 2,2 - Dimethyl - 1,3 - propanediol monohydroxypivalic ester is purified by distilling the crude at a temperature of above 100 C., with sulphuric or sulphonic acid. The distillation may be continuous with from 0À05 to 5% molar proportion of the acid.
Patent GB-1092808-A (GB)
Title: Process for purifying 1-aminoadamantane
IPC: C07C5/29
Filed: 1964-12-16
Abstract: The invention comprises 1-aminoadamantane hydrate, its preparation by reacting the amine and at least 0.5 mole of water per mole of amine at a temperature above 70 DEG  C., and a process for purifying crude 1-aminoadamantane by steam-distilling 1-aminoadamantane using at least half the equimolar amount of water and maintaining the condensing surfaces at a temperature sufficient to prevent blockage of the condenser by solid 1-aminoadamantane hydrate, and recovering 1-aminoadamantane from the distillate obtained, e.g. by extraction with methylene chloride.  1 - Amino - adamantane is prepared by subjecting 1-bromo-adamantane to the Ritter reaction with acetonitrile and sulphuric acid, reacting the product with an excess of water and subjecting the 1-acetamide-adamantane so obtained to alkaline hydrolysis.
Patent GB-702599-A (GB)
Title: Improvements in or relating to photographic printing
Inventor: HARRISON GEOFFREY BOND
IPC: G03C5/02
Filed: 1950-12-19
Abstract: 702,599. Photographic printing process. ILFORD, Ltd. Nov. 19, 1951 [Dec. 19, 1950], No. 30891/50. Class 98(2) A method of producing a series of prints from a series of negatives of varying density level and density range which comprises printing each negative on printing material inherently adapted to afford developed images of high contrast, the total exposure time being a constant for the series and the exposure being made up of a printing exposure and a fogging exposure each of pre-set duration, the intensity of the fogging light and the intensity of the printing light being separately controlled, one of them in stepwise fashion, and the other being adjusted so that, in the total exposure time, the total exposure of the print in the area corresponding to the most dense area of the negative is just sufficient to cause (on development) a perceptible veil (that is, a density of 0.1 above the fog density of the paper being used) in the print in such area. According to one way of carrying out the method, the operator by visual examination of the negative decides on its approximate contrast and adjusts the intensity of the fogging light to the appropriate step. He then adjusts the printing light intensity to a value such that the total exposure in a pre-set time is sufficient to give the perceptible veil in the area mentioned. To aid the operator in judging what exposure is necessary he may be provided with a cross-line grid photometer. In this case, the image of the negative is projected on to the reflecting surface of the grid together with the fogging light, and a standard light source is placed behind a diffuser on the other side of the grid. The fogging on printing light intensity is then adjusted until the grid pattern disappears in the area of the projected image corresponding to the densest area of the negative. By an initial adjustment of the standard light intensity it is arranged that the aggregate intensity of the light falling on the grid is just sufficient to produce the veil mentioned.
Patent GB-953887-A (GB)
Title: New monoazo dyestuffs of the benzthiazole-azo-benzene series
Inventor: FISHWICK BRIAN RIBBONS
IPC: C09B29/033
Filed: 1960-09-07
Abstract: 2-Amino -6- (b  - hydroxyethylsulphonyl) benzthiazole is prepared by adding a solution of Bromine in acetic acid to a solution of p-aminophenyl-b -hydroxyethylsulphone and potassium thiocyanate in acetic acid, the mixture stirred for 16 hours at room temperature, filtered, the precipitate boiled with 2N. hydrochloric acid, the hot solution basified with sodium carbonate and the product filtered off.ALSO:The invention comprises water-insoluble monoazo dyes devoid of sulphonic and carboxylic acid groups and of formula <FORM:0953887/C3/1> wherein n is 1 or 2, m is 2 or 3 and E is the residue of an amine of the benzene series coupling in the para position to the amino group.  The dyes are prepared by the usual coupling procedure using suitably substituted components.  The dyes are used to dye textile materials comprising artificial fibres such as cellulose ester and aromatic polyester in orange to violet shades. In examples 2-amino-6-b -hydroxyethylsulphonyl) - benzthiazole (see Division C2) is diazotized and coupled with N : N - bis (b  - acetoxyethyl) - m - toluidine, N : N - bis (b  - cyanoethyl) - aniline, N - b -cyanoethyl - N - b  - methoxyethyl - m - toluidine, N,N - bis (b  - acetoxyethyl) aniline, N-b  - cyanoethyl - N - b  - ethoxyethyl - or - carbethoxyethyl - m - toluidine and N : N - bis (b -carbethoxyethyl) - m - toluidine. Many other starting materials are specified.  Specification 440,113 is referred to.
Patent GB-1174433-A (GB)
Title: Assemblies Resistant to High Temperature
IPC: H01B3/48
Filed: 1967-07-05
Abstract: 1,174,433. Coated sheet materials. RHONEPOULENC, S.A. 5 July, ,1967 [5 July, 1966], No. 30997/67. Heading B2E. [Also in Division B5] Paper made of aromatic palyamide fibres has a bonding layer of one or: more organosilicon compounds comprising groupings capable of bonding to the polyamide paper and groupings capable of bonding to organosilicon resins or organosilicon elastomers, the layer being applied to the paper using a swelling agent for the polyamide. A layer of an organic polysiloxane resin of elastomer containing a cross-linking agent may be applied to this organosilicon layer. The swelling agent present may be an amide of a lower alkanoic acid or 2-N-methylpyrrolidone. The organosilicon copolymer composition may be diluted with a diluent inert to the polyamide and compatible with the silicon compound. The diluent may be a lower alkenyl having 1-4 carbon atoms. The paper may first be treated with the swelling agent and then the organosilicon bonding composition of the swelling agent and organosilicon bonding compound applied directly to the paper. The top coating of organosilicon resin or organopolysiloxane convertible into an elastomer may be heated until the surface is non-sticky in the cold, but still is completely cross-linked and adhesive at elevated temperatures. The aromatic polyamide may be poly(m-phenylene isophthalamide). The organosilicon compound may be an (aminoalkyl)-trialkoxy silane or an [(aminoalkyloxy) alkyl]trialkoxy silane alone or mixed with a vinyl-trialkoxysilane.
Patent GB-618333-A (GB)
Title: Improvements in and relating to electromagnetic switches
IPC: H01H50/30
Filed: 1946-10-18
Abstract: 618,333. Electromagnetic switches. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 18, 1946, No. 31064. Convention date, Oct. 22, 1945. [Class 38 (v)] In a shock-proof contactor, the verticallymoving core 10 carries a rack 11 engaging a pinion 13, a crank on which operates the contact member 5 through a link 21 and a second rack 23, having a weight counterbalancing the weight of the rack 11 and the core 10, engages the other side of the pinion. A spring 27 fixed to the rack 23 biasses the contactor tc the open position. The contact member 5 is pivoted at 6 and the contact 4 may be adjusted by a screw 35: The crank moves through approximately 180 degrees in operation.
Patent GB-226841-A (GB)
Title: Improvements in or relating to ball bearings
IPC: F16C19/16
Filed: 1924-12-29
Abstract: 226,841. Gribojedoff, N. von. Dec. 28, 1923, [Convention date]. Ball bearings.-The race rings 10, 13, Fig. 2, have grooves 11, 12, 15, 17, on the peripheral and end surfaces which do not contact with the balls and are preferably made of Siemens - Martin or other soft steel. The grooves facilitate both a deeper penetration of the case hardening and the deformabilitv of the race rings under load and heating in operation and permit each ring to be gripped by the holding segments 23, Fig. 3, of a grinding machine chuck so that all the operative surfaces of the ring may be ground.