baber/WOPTO huggingface dataset:
Patent GB-918614-A (GB)
Title: Improvements in or relating to fluid pressure unloader valves
Inventor: BALLARD DONALD HENRY
IPC: F16K17/04
Filed: 1960-05-10
Abstract: 918,614. Fluid-pressure servomotor control systems. CLAYTON DEWANDRE CO. Ltd. May 10, 1961 [May 10, 1960], No. 16473/60. Class 135. A fluid pressure unloader valve, particularly for compressors, comprises a housing 1 having an inlet 2 and an outlet 3 connected by a main passageway 4 housing a non-return valve 5. A valve 9, connected to a fluid-pressure responsive member, such as a piston 11, normally closes a passageway 6 leading from the passageway 4, upstream of the non-return valve, to an exhaust port 7. A governor valve 17 controls flow of fluid from downstream of the non-return valve through passages 15, 18 to a chamber 12 such that when the downstream pressure reaches a predetermined value, the valve 17 opens and the fluid pressure then acting on piston 11 opens the valve 9 to allow flow to the exhaust. The valve 17 is a ball valve normally closing on a seat 16 and being a close fit in a bore 27, thus when the ball opens it seats on a member 26 and fluid pressure acts on the full diameter of the ball to prevent chattering. When the outlet pressure drops, the ball 17 closes on seat 16 and the pressure in chamber 12 is exhausted through passages 18, 15, member 26 and an outlet 25.
Patent GB-464967-A (GB)
Title: Soluble silicate binders and products made therewith
Inventor: PERCY PITT NORMAN
IPC: C04B22/16
Filed: 1936-06-15
Abstract: The strength of alkali silicate binders is improved by the addition of 1 per cent of an alkali metal phosphate, calculated on the weight of the material to be bonded; or 10 per cent of phosphate (based on the dry weight of the silicate) may be added thereto.  The alkali phosphate may be monodi- or tri-sodium phosphate, potassium phosphates, sodium hexa meta phosphate, pyrophosphate or glycerophosphate, and may be either ground up with dry silicate, or with a solution.  The binder may be used for abrasives, refractory cements and mortars, asbestos paper, wood joints, plywood, corrugated paper, fibreboard and laminated board.
Patent GB-561407-A (GB)
Title: Improvements in or relating to alloys particularly used for the production of alloy steels
IPC: C22C35/00
Filed: 1941-09-20
Abstract: 561,407. Alloys. STEVENS, A. H. (Vanadium Corporation of America). Sept. 20, 1941, No. 16637/42. Divided out of 556,770. [Class 82 (i)] An alloy, particularly used for the production of alloy steels, described in Specification 556,770, comprises 6-50 per cent of one or more of titanium, beryllium, boron and thorium, with aluminium in an amount not less than 1 per cent, the two latter elements together being not more than three times the content of the titanium &c., silicon less than 20 per cent and the remainder iron or another carrier metal such as manganese, nickel, copper, cobalt or chromium which may also replace part of the iron. The alloy may also contain molybdenum, tungsten, alkaline earth metals such as calcium, and lead, and the carbon content should be low preferably under 0.25 per cent.
Patent GB-554379-A (GB)
Title: Improvements in or relating to engine or compresser valves
IPC: F01L5/06
Filed: 1941-12-29
Abstract: 554,379. Valves for air compressors. RILEY, G. Dec. 29, 1941, No. 16738. [Class 8 (i)] [Also in Group XXVII] A sleeve valve for engines, compressors &c., is formed with a longitudinal slit 32 extending from one end to near the other end so as to allow expansion and contraction, and is also formed with a number of small radial holes 42 to reduce the pressure of the valve against the cylinder wall. The slit may be zigzagged at 39. Longitudinal distortion of the sleeve is prevented by a lock ring 34 fitted in a groove 33. An expanding ring 38 may be fitted in the upper end of the sleeve, which may control the exhaust ports, while sleeve ports 17, 18 control the inlet. Grooves 41 may be provided in the outer face of the sleeve to retain oil. Small grooves or depressions may also connect some of the holes 42. In a modification, instead of a single slit, there may be several slits formed along the sleeve out of line with one another.
Patent GB-1102835-A (GB)
Title: The antibiotic lincomycin d
IPC: C12P19/64
Filed: 1965-04-21
Abstract: <FORM:1102835/C2/1> Lincomycin D, an antibiotic, is produced by growing Streptomyces lincolnensis var. lincolnensis in a fermentation broth as in Specification 976,765, but further characterized by the addition of 0.75 to 8 gm/litre of methyl thiolincosaminide (Specification 1,008,647).  A mixture of lincomycin and lincomycin D is obtained by treating the clarified broth with (a) surface active adsorbents e.g. activated C; or (b) cation exchange resins.  The mixture of lincomycin and lincomycin D is dissolved in water at pH 10 and is extracted with a solvent for lincomycin e.g. methylene chloride. The residual aqueous solution is extracted with a solvent for lincomycin D.  The solid extract is dissolved in methanol and the hydrochloride precipitated by means of ether.  Further purification of the hydrochloride is obtained by counter current distribution using n-butyl alcohol and water.  Lincomycin D forms salts with inorganic and organic acids e.g. succinic, citric, maleic, fumaric, pamoic, cholic, palmitic, mucic, camphoric, glutaric, glycolic, phthalic, lauric, stearic, undecylenic and many other acids. Lincomycin D hydrochloride is soluble in water and methanol; relatively insoluble in acetone, ethyl acetate, methylene chloride, chloroform and ether; has elemental analysis C = 45.62%, H = 7.78%, N = 6.23%, S = 7.31%, Cl = 7.82%, O = 25.24 (by diff.); [a ]25D = + 149 DEG  (C = 0.923 in water); mol. weight 450 \sB 20; no absorption maxima in U.V.; I.R. as in Fig. 2.  Exhibits a characteristic papergram (Fig. 1, not shown).  Lincomycin D may be incorporated in an animal feed as a growth promoter, with or without other antibiotics.ALSO:A bacteriostatic rinse for washing hands, cleaning objects and treating laundered clothes comprises as active ingredient thereof the antibiotic lincomycin D.
Patent GB-398306-A (GB)
Title: Improvements connected with the mechanical masticating, working, mixing or manipulating of rubber or similar mixes
IPC: B29B7/86
Filed: 1932-06-15
Abstract: Rubber is masticated or worked in an atmosphere of nitrogen, flue gas, carbon dioxide or other inert gas.  In enclosed mixers, the gas may be drawn or forced in: in open mixers, a hood may be provided. This reduces softening and loss of nerve, and is specially applicable to heavily loaded mixes.
Patent GB-185868-A (GB)
Title: Improvements in pumps for supplying air to internal combustion engines
IPC: F02B33/00
Filed: 1921-06-20
Abstract: 185,868. Reed, F. J. June 20, 1921. Pistons; guiding means within cylinder.-The piston w of a double-acting air pump for Diesel or other internal-combustion engines is reciprocated by means of two spring-pressed, rectangular studs 5 engaging pairs of right- and left-handed grooves t and u in the pump shaft, and is guided by spring-pressed keys x working in slots y in the cylinder wall. Studs 10 engaging the grooves seal the piston, which is started at the beginning of each stroke by the pressure of a cushioning spring 6 causing the studs 5 to pass from one of the pairs of grooves to the other.
Patent GB-439466-A (GB)
Title: Improvements in lifting jacks for motor vehicles and the like
IPC: B66F3/08
Filed: 1935-06-12
Abstract: 439,466. Lifting-jacks. KUNATH, P., 9, Papierm³hlengasse, Dresden, Germany. June 12, 1935, No. 16936. [Class 78 (iii)] Lifting-jacks of the kind which are fitted with hinged struts to prevent toppling over, are provided with one or more struts 8 connected by a hinged or ball joint to a ring 7 which can be rotated either on the spindle 3 or on the top of the standard to the most suitable position for propping up the jack. The struts may be telescopic and have forked ground-engaging ends. Fig. 5 shows a spring- pressed sliding plate 11 which can be manipulated to hold the strut clear of the ground while the jack is placed under the vehicle. As the ring 7 rises with the crutch in lifting the vehicle, the plate 11 only follows it upwards for a limited distance until the pressure of the spring 13 is relieved. The weight of the strut then pushes the plate rearwardly to the extent allowed by the slot 12, the strut being released during the process and falling by gravity.
Patent GB-178758-A (GB)
Title: Improvements in metal railway sleepers and chairs
IPC: E01B3/16
Filed: 1921-06-21
Abstract: 178,758. Fisher, G. J. June 21, 1921. Sleepers, securing rails to. - Sheet-metal railway sleepers a with bent-up chair jaws f have longitudinal flanges b which are notched at g between the jaws f to permit bending the sleeper to open and close the jaws for the reception and securing of the rails e. The notches are preferably in alignment with the outer jaws. The chair jaws are formed by bending-up portions embraced by channel-shaped slits.
Patent GB-743436-A (GB)
Title: Improvements relating to power assisted steering mechanism for vehicles
IPC: B62D5/06
Filed: 1953-06-19
Abstract: 743,436. Fluid-pressure servomotor control systems. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and TREGONING, G. R. June 3, 1954 [June 19, 1953], No. 16980/53. Class 135. In a servo-assisted steering mechanism for vehicles, the steering shaft is formed in two axially-aligned parts with coacting abutments at their adjacent ends, there being some lostmotion before the rotary movement of the one part is transmitted to the other, and a member associated with one of the parts moves longitudinally during the lost-motion movement to actuate a valve controlling the servoassisting apparatus. In an embodiment, a bush 4 screwed on the lower end of the steering shaft 1 is formed with a diametral slot 8 into which project lugs 9 formed on the end of a bush 5 splined to a separate shaft, not shown, which is aligned with the shaft 1 and is connected to the usual steering gear of the vehicle. A nut 13 threaded on to the bush 5 is provided with lugs 14 which fit closely in slot 8. When shaft 1 is rotated, the aligned shaft connected to the steering gear will also be rotated to give a direct manual steering effort as soon as the lost-motion between slot 8 and lugs 9 has been taken up. While the lost-motion is being taken up, nut 13 will be rotated relatively to bush 5 and it will advance longitudinally on the bush. A lever with a bifurcated end engaged in a groove 15 around nut 13 will be tilted by this movement and will actuate the valve controlling the servomotor to give a powerassisted steering movement. The bushes 4, 5 are positioned by ball races 10, 11. The slot 8 and lugs 9 may be arranged as a splined, instead of a longitudinal, connection.
Patent GB-1174299-A (GB)
Title: Production of Diesters Suitable for use as Plasticisers.
Inventor: HABESHAW JOHN
IPC: C08K5/12
Filed: 1967-04-13
Abstract: 1,174,299. Diesters of oxo-synthesis products. BRITISH HYDROCARBON CHEMICALS Ltd. 19 Feb., 1968 [13 April, 1967], No. 17045/67. Heading C2C. [Also in Division C3] Products useful as vinyl-polymer plasticizers are obtained by (1) treating a feedstock consisting wholly or mainly of 3,4-dimethylhexenes with carbon monoxide and hydrogen in an oxo-synthesis reaction; (2) reducing the aldehydes so obtained to alcohols; and (3) reacting the alcohols with a plasticizer acid, as later defined. The preparation of a suitable initial feedstock is described in Specification 1,164,474. The initial oxo-synthesis reaction may be effected under conventional conditions in the presence of a cobalt catalyst, e.g. dicobalt octacarbonyl, cobalt carbonyl hydride or a hydrocarbon-soluble organic acid salt of cobalt. The reduction of the aldehydes to alcohols may be effected in known manner without initial fractionation. The esterification of the alcohols with a plasticizer acid may be effected in known manner also, a " plasticizer acid " being defined as any dicarboxylic acid the diesters of which with C 8  or C 9  alcohols have been proposed as plasticizers for vinyl polymers. Specified plasticizer acids are phthalic, isophthalic, sebacic, adipic and azelaic acids. An example is given.
Patent GB-1144863-A (GB)
Title: Method of producing webs of material of uniform longitudinal thickness
IPC: B29C48/08
Filed: 1967-04-13
Abstract: 1,144,863. Extrusion/rolling plastic sheets. HERMAN BERSTORFF MASCHINENBAUANSTALT G.m.b.H. 13 April, 1967 [12 Jan., 1967], No. 17057/67. Heading B5A. In the production of plastics or rubber sheets, material is screw extruded from a long slot die 4 into the nip between calendering rolls 5, 6, the pressure of material adjacent the slot orifice being measured and correlated with the speed of rolls 5, 6 to maintain this pressure and hence maintain the thickness of the sheet at a predetermined value. As shown, a pressure gauge 7 is placed immediately upstream of the slot orifice and is connected to roll drive 9 via a regulator 8. Alternatively, the gauge may be placed between the slot orifice and the roll nip. The slot orifice is fed via a diverging passageway (4a), Fig. 2 (not shown).
Patent GB-1038346-A (GB)
Title: Processes for preparing 2-alkyl-cyclopentane derivatives, and the derivatives thus prepared
IPC: C07C45/45
Filed: 1964-04-24
Abstract: 2 - alkylcyclopentane - 1,3 - diones are prepared by cyclization of the corresponding alkyl 5-alkylleyulinates by reaction with alkali metal alcoholate.  The starting materials are made by (1) reacting an aliphatic aldehyde with an alkyl maleate to form an acylsuccinate; (2) hydrolysing and decarboxylating the latter to give the corresponding levulaic acid; and (3) esterifying the latter with the appropriate alcohol.  Examples are given of all stages.
Patent GB-122610-A (GB)
Title: Improvements relating to Stopper Devices for Bottles, Tubes and the like.
Inventor: HENNING ALBERT
IPC: B65D45/02
Filed: 1918-10-19
Abstract: 122,610. Henning, A. Oct. 19, 1918 Mounts. - In closures or stoppers for bottles, flasks, tubes, &c. and of the kind such as described in Specification 102,131 in which the detachable stopper is sprung over projections on the neck of the bottle, &c., the sleeve portion which carries the stopper is further secured in position on the neck of the container by means of a bayonet joint. As shown, the lower part of the neck of the flask a is enclosed by a spherical cap c, which fits over ribs d on the neck and carries pins c to engage in recesses or side openings f in the sleeve portion b<1> of the stopper b. The sleeve b<1> has openings g, h to fit over opposite sides of the ball c, and is slotted at i to fit over the rib d. The sleeve is pushed over the ball c and turned thereon to engage the pins e in the slots f.
Patent GB-1217295-A (GB)
Title: Container closure adapted to be removed by tearing
IPC: B65D41/00
Filed: 1969-04-01
Abstract: 1,217,295. Container opened by tearing. ALUMINUM CO. OF AMERICA. 1 April, 1969 [10 April, 1968], No. 17113/69. Heading B8D. An aluminium alloy container closure 5 bears a peripheral shoulder 4, and on a tear-out region defined by a score line 6 is rotatably mounted a sheet metal tab 10 formed with a cam portion 18 and a ring handle 20, the former bearing against said shoulder and causing a rupture at the score line, on rotation of the tab in the direction of arrow " A ". The tab is pivoted by a rivet 9 formed integrally with the closure 5. The tear-out region may further be completely removed by pulling outwardly on the ring handle, which may be upturned slightly from the plane of the closure, or bear a raised lug to facilitate rotation. The tear-out portion may comprise the complete closure or a portion thereof.
Patent GB-1166218-A (GB)
Title: Improvements in or relating to Articulated Vehicles.
IPC: B62D53/02
Filed: 1968-04-10
Abstract: 1,166,218. Articulated vehicles. FARMING A.B. 10 April, 1968 [14 April, 1967], No. 17119/68. Heading B7H. In an articulated vehicle of the type having two sections which each comprise a frame 1, 2 and a ground wheel axle 4, 5 and are rotatably connected by a shaft 3 extending longitudinally of the vehicle, locking means 7 on the frames 1, 2 are operable to lock the frames 1, 2 in different angular positions about the axis of the shaft 3. The locking means 7 comprises an hydraulically-actuated clamping device 9 which is mounted on the frame 2 and includes a pair of knurled or serrated jaws for gripping a disc segment 8 on the frame 1. The clamping device may be controlled manually or may be applied automatically when the frames 1, 2 reach a predetermined angular limit position. Such limit position may be automatically reduced depending on the altitude of the frames 1, 2 with respect to a vertical pivot 6 about which the parts 1, 2 are rotated for steering purposes. The wheels on both axles 4, 5 may be driven, and the centre of gravity of each vehicle section lies on a vertical line through the intersection of the axis of the shaft 3 with the axis of the respective axle 4, 5.
Patent GB-442993-A (GB)
Title: An arrangement for facilitating the bundling of rolled rods
IPC: B65B27/10
Filed: 1935-06-14
Abstract: 442,993. Rolling. SCHLOEMANN AKT.-GES., 13, Steinstrasse, Diisseldorf, Germany. June 14, 1935, No. 17155. Convention date, June 14, 1934. [Class 83 (iv)] [See also Group XVII] Rolled bars received in heaps from a shears on a roller table 2 are transferred to oscillated shaking rods 9 which spread them out in a single layer, to facilitate counting and hand bundling them, and pass them to receiving troughs 13 as loose rods or in bundles. They are then transferred from 13 by foot levers 14 to adjustable slides 15, 16 which direct them into the channels 17, 18 or 19, as selected, of the delivery conveyer 6. From 6 the bars are transferred to bundling stations on either side by lifters 7 and are arrested by stops 22, coupled with the lifters 7 so that small groups can be received and bundled on the stop 23 of the lever 24, while large groups are received on the lever 25 and bundled and dropped into receiving pockets 26 whence cranes deal with them. The various stops and levers at the bundling places are controlled by pedals 27.
Patent GB-1489037-A (GB)
Title: Process for the preparation of organic solutions of percarboxylic acids
IPC: C07C409/26
Filed: 1976-04-28
Abstract: 1489037 Continuous production of percarboxylic acids BAYER AG and DEUTSCHE GOLD - UND SILBER - SCHEIDEANSTALT 28 April 1976 [30 April 1975] 17178/76 Heading C2C Organic solutions of percarboxylic acids are prepared in a continuous manner by reaction of an aqueous solution of hydrogen peroxide with the corresponding carboxylic acid in the presence of a water-soluble acid catalyst which boils above 160 C., extraction of the percarboxylic acid from the resulting reaction mixture using an organic solvent which is immiscible with water, reconcentration of the raffinate, which essentially contains hydrogen peroxide and the acid catalyst, by distilling off water in a distillation column and recycle of the raffinate, reconcentrated in this way, into the reaction with the carboxylic acid, characterized in that (a) the raffinate is divided into two partial streams in a ratio of 1 to 25 : 100 and (b) fed to a distillation column which is operated under reduced pressure and which has at least two take-off weirs as tray inserts, the first take-off weir being at least two theoretical plates above the sump phase, the second take-off weir being arranged at least two theoretical plates above the first take-off weir and the section of column between the second take-off weir and the top of the column having at least two theoretical plates (c) the larger partial stream of the raffinate is passed into the column below the first take-off weir and the smaller partial stream is passed into the column below the second take-off weir, (d) water is removed at the top of the distillation column, (e) a first sidestream, which essentially contains the raffinate from the extraction, is withdrawn from the second take-off weir and is a 2 to 40% strength by weight aqueous solution of hydrogen peroxide, which is optionally fed, together with the larger partial stream of the raffinate from the extraction, into the column below the first take-off weir, (f) a second sidestream is withdrawn from the first take-off weir and is an aqueous solution of the acid catalyst which optionally can be further worked up and re-used, and (g) the reconcentrated aqueous solution of hydrogen peroxide and acid catalyst, withdrawn as the sump product from the distillation, is recycled into the reaction with the carboxylic acid. In the examples perpropionic acid is prepared.
Patent GB-448847-A (GB)
Title: Medium for detecting chemically reactive gases or vapours in air or other neutral gases
IPC: E05D15/08
Filed: 1934-09-11
Abstract: A reagent for testing gases comprises a coloured inorganic oxidizing agent such as potassium permanganate absorbed in a colourless inorganic gel such as silica gel.  A buffer solution may be added to maintain a definite acidity.
Patent GB-276784-A (GB)
Title: New or improved combination plug and valve device for liquid containers
IPC: B65D51/16
Filed: 1926-07-09
Abstract: 276,784. Mitchell, W. A. July 9, 1926, Stoppers w i t h valves.-A screw or like closure plug for a container for heavy oil or other liquid is adapted for the introduction of compressed air to facilitate delivery of the contents. The plug has a central cavity e containing a valve f having notches g at the sides and formed with a groove h underneath to facilitate grinding into place on its seating at the top of the chamber, against which it is normally pressed by a spring j supported by a screwed plug k. Air is introduced by attaching the nozzle of a pump to the nipple d.
Patent GB-530790-A (GB)
Title: Improvements in or relating to the manufacture of plastic materials
IPC: C08L89/00
Filed: 1939-06-14
Abstract: 530,790. Plastic compositions. AGRICULTURAL & CHEMICAL PRODUCTS, Ltd., and GUTTMAN, J. June 14, 1939, No. 17414. [Class 70] [Also in Group IV] A plastic material, which may be bordered e.g. by treatment with formaldehyde, to give a horn-like product, comprises a mixture of casein and yeast, either or both components having been subjected, prior to mixing or in admixture, to an acid treatment e.g. with lactic acid. An example is given.
Patent GB-238677-A (GB)
Title: Improvements in or relating to spool carriers for braiding machines
IPC: D04C3/14
Filed: 1924-07-22
Abstract: 238,677. Chace, J. E. July 22, 1924. Braiding-machines.-A spool carrier having let. off mechanism arranged below the spool comprises a base 1 supporting a standard 3 on which the the spool 6 and a ratchet wheel 7 are rotatably mounted, a pawl 16, pivoted on a pin 11 between lugs 12 on the standard 3, being normally retained in engagement with the ratchet wheel 7 by a spring-pressed plunger 17 and withdrawn to allow rotation of the spool by one arm 14 of a bell-crank lever pivoted on the pin 11, the other arm 10 being connected to a slide 23, on a thread guiding arm 8, engaged by the threads 27 so as to be raised thereby. The arm 10 extends through slots 13 and 9 in the standard 3 and arm 8 respectively and the arm 14 is provided with a guiding fork 15 embracing the standard. The pawl 16 is formed of a length of strip metal bent upon itself to form a tail 18 and a double bearing on the pin 11. The slide 23 comprises a length of wire bent round the arm with one end extended upwardly to form a thread hook 24 and a second length of wire secured to the first wire and having its upper part formed with a thread hook 25 whilst its lower end 26 extends downwardly and is connected to the arm 10. The operative end of the pawl 16 is guided in a slot provided in the spool-supporting plate 4 carried by the standard 3. Specification 238,068 is referred to.
Patent GB-515844-A (GB)
Title: An improved cigarette paper
IPC: A24D1/02
Filed: 1938-06-13
Abstract: 515,844. Cigarettes. ROGERS, S. June 13, 1938, No. 17520. [Class 130] To prevent overlap at the edges of a cork or other tip for a cigarette paper after folding, the tip is cut to a length shorter than the width of the paper As shown in Fig. 1, a tip 2 extends from the gummed edge 4 of a cigarette paper 1 sufficiently far to leave a blank such as 6.