baber/WOPTO huggingface dataset:
Patent GB-695751-A (GB)
Title: Improved filtering plant capable of being back flushed with a mixture of gas and liquid
IPC: B01D24/38
Filed: 1951-05-30
Abstract: 695,751. Gravity sand filters. BAMAGMEGUIN AKT.-GES. ZWEIGNIEDERLASSUNG BUTZBACH. May 30, 1951 [July 27, 1949], No. 12667/51. Class 46 In a filtering plant capable of being backflushed with a mixture of gas and liquid, elements for carrying the filter bottom are arranged loosely side by side with slots between them and chambers for distributing the gaseous medium which are slotted or apertured and open at the bottom are provided underneath the carrying elements so as not to be loaded by the weight of filter material. The carrier elements may comprise T-sectioned members 1, Fig. 1, leaving slots between them for downward passage of filtered liquid as shown on the left and for upward passage of a mixture of gas and liquid for back-flushing. Between the webs of the members 1 and suspended from them, e.g. by straps are arranged open-bottomed gas-distributing chambers 2 having slots 7 extending up sides at an inclination to the vertical as shown in Fig. 3, or vertically as in Fig. 2 (not shown). During back-flushing gas is supplied to the chambers 2 by apertured pipes 5 the level of flushing liquid introduced at arbitrary places beneath the bottom 3 being depressed thereby for example to 8, Fig. 3. Specially-shaped chambers 11, Fig. 1, are used for the edge zones 10 of the filter. In Fig. 4 (not shown), the webs of the members 1 are directed upwards the flanges 3 thus presenting a smooth surface downwards. The walls of the chambers 2 are vertical and the slots 7 replaced by triangular apertures wholly within the chamber walls. Moreover the chambers are arranged underneath the flanges 3 rather than under the slots between them 'but in either case they may be arranged arbitrarily. In place of the T-shaped members 1 reinforced concrete members 13, Figs. 5 and 7, may be used, with gas-distributing chambers 2, suspended by clips 15 and having triangular apertures. The latter are fed with gas by apertured pipes 21. Alternative forms of the members 13 are shown in Fig. 6; they may incorporate gas-feeding channels 16, rendering the use of apertured pipes underneath the chambers 2 unnecessary, and be fitted with projections 18 or 19 or perforations 20 for ease of handling. The undersides may also serve as the upper parts of the chamber 2a. The gas-distributing chambers and clips may consist of inert metal or plastic material.
Patent GB-1147920-A (GB)
Title: Frame assembly for chain conveyors used in mineral mining
IPC: B65G21/10
Filed: 1968-03-18
Abstract: 1,147,920. Conveyers for mines. GEWERKSCHAFT EISENHUTTE WESTFALIA. 18 March, 1968 [6 Oct., 1967], No. 12683/68. Heading B8A. A frame assembly 3 is attachable to a channel 2 of a two-chain scraper conveyer in either of two positions, wherein in one position, Fig. 1, the upper runs of chains 6 pass rectilinearly between the conveyer and a main drive drum 5 and in the second position, at the other end of the conveyer, Fig. 2, the lower runs of the chains pass rectilinearly between the conveyer and an auxiliary drive drum 5. Thus, in each case the chain runs which are subjected to tension by the drive run rectilinearly. To provide for the alternative attachment, the frame has abutment faces 9, 10, extending at an obtuse angle to each other. In the Fig. 1 position, a wedge-shaped gap 15 formed between the frame face 9 and the end face 13 of the channel 2 is filled by one or more pieces 17, the frame and the channel being connected by bolts 16. In Fig. 2, a gap 19, corresponding to the gap 15 is filled by one or more pieces 20.
Patent GB-595855-A (GB)
Title: Smokeless powder
IPC: C06B45/02
Filed: 1945-05-22
Abstract: 595,855. Explosives. DU PONT DE NEMOURS & CO., E. I. May 22, 1945, No. 12777. Convention date, May 20, 1944. [Class 9 (ii)] A propellent powder comprises lamellar fragments or flakes of nitrated regenerated - cellulose sheet, said fragments having a diameter not exceeding 0.021 inch. The flowing property of the fragments, preferably of size between 0.009 and 0.021 inch, may be improved by adding thereto a small proportion of a waterinsoluble metal salt of a higher aliphatic acid, e.g. calcium stearate, which is preferably added to the nitrated and dried product with or without the addition of graphite. The sizing of the flakes may be accomplished either before or after nitration by comminuting and sieving in the wet or dry state. The comminuted and nitrated flakes may be mixed with nitroglycerin to form a double-base propellent powder or with surface deterrents such as dinitrotoluene or centralite and thereafter glazed with the water insoluble metal soap. The Specification as open to inspection under Sect. 91 comprises also the treatment of flakes having (a) a diameter greater than 0.021 inch ; (b) an average cross-sectional dimension not greater than 0.021 inch ; and (c) a thickness between 0.0005 and 0.01 inch. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1443381-A (GB)
Title: Unitarily cast hammer
IPC: B25D1/00
Filed: 1974-03-22
Abstract: 1443381 Moulding hammers CES Inc 22 March 1974 [7 May 1973] 12973/74 Headings B4C and B5A A hammer comprises a skeletal indent member having a head portion 14 and a handle 18 the handle having mechanical locking means to prevent twisting relative to the head, the whole being encased in an elastomeric casing such as urethane. The head comprises a cylinder with concave end caps and containing silicon coated lead shot. The skeletal handle may be formed of two spaced flat strips wrapped around the skeletal head with locating members 28, 30 of urethane to locate the handle in the mould. Alternatively the handle may be a round section rod with a flat strip secured thereto by welding to provide the locking means the round rod having holes therein to take removable locating pins 62, 64 during moulding. Reference has been directed by the Comptroller to Specification 1,364,295.
Patent GB-543895-A (GB)
Title: Improvements in hide strainers
IPC: C14B1/26
Filed: 1940-08-16
Abstract: 543,895. Fastenings &c. WACHTEL, K. Aug. 16, 1940, No. 13111. [Class 44] A clamp for holding hides &c. during straining comprises a pair of integral converging arms a, a' and a roller f elastically connected to the arm a' and adapted to coact with the arm a to grip the hide. The surfaces of the arms may be grooved or roughened as at i. The arm a has a peg e to fix the clamp on a board.
Patent GB-1274636-A (GB)
Title: Muconic acid derivatives
IPC: C07C235/00
Filed: 1970-03-18
Abstract: 1,274,636. Muconic and adipic acid derivatives. YEDA RESEARCH & DEVELOPMENT CO. Ltd. 18 March, 1970 [21 March, 1969], No. 13118/70. Heading C2C. Muconic acid derivatives of the formula wherein R is a cyano or -CO-R<SP>1</SP> group, R<SP>1</SP> being a C 1-8 -alkoxy, aryloxy or an optionally substituted amino group; e.g. the novel compounds N,N<SP>1</SP> - dimethyl - trans,trans - mucono diamide and trans,trans - dibenzyl muconate; are obtained by dehydrohalogenating solid crystalline compounds of the formula wherein R<SP>1</SP> is a halogen atom; by reaction with ammonia or organic amines in the gas or vapour phase. The adipic acid derivatives of the formula may be obtained by reacting the corresponding unsaturated compounds with elementary halogen. Muconic acid may be obtained by hydrolysing muconodinitrile obtained by the above process. Dibenzyl - 3,4 - dibromoadipate, which may be used as a starting material in the above process, may be obtained by esterifying 3,4- dibromoadipic acid with benzyl alcohol.
Patent GB-452170-A (GB)
Title: Improvements relating to weighing apparatus
IPC: G01G1/36
Filed: 1935-05-03
Abstract: 452,170. Weighing-apparatus. ASHWORTH, SON, & CO., Ltd., ASHWORTH, W. S., and ASHWORTH, E. F., Midland Iron Works, Dewsbury, Yorkshire. May 3, 1935, No. 13168. [Class 143] In a weighing-apparatus of the kind employing an automatic weight-indicating mechanism and having a steelyard and poise weight for counterbalancing the major order of the load, the poise weight is traversed by a rack-andpinion mechanism under the control of an externally disposed actuating member, the initial operation of which results in a force being applied directly below the fulcrum of the steelyard so as to move the teeth of the rack into driving engagement with the pinion. The load transmitted through levers 3, 4 to the steelyard 8 operates the weight-indicating mechanism, within a housing 6, by means of a rod 5. The poise weight 9 carries a rack 10 having at one end a nib 10<a> co-operating with notches in a bar 11 secured to the steelyard. Movement of the poise weight is effected by rotating a handle lever 22 connected by gearing to a spur wheel 12 which may be engaged by the rack 10. The rack 10 is normally out of engagement but is raised into engagement and at the same time is lifted out of the notches in the bar 11, by means of a bell-crank lever 26 and rod 24 operated by rocking the hand lever 22 to the left in order to remove it from its retaining notch prior to rotating it to displace the poise weight. A cable 31 moving in unison with the spur wheel 12 displaces the chart bearing the major weight numerals 33 visible through apertures in the dial. A second cable 34 carrying a weight 36 exerts a pull on the gearing tending to rotate the hand lever 22 and prevent it occupying an intermediate position between two notches. The steelyard may be locked against a stop 38 by means of a hand lever 40 actuating a crank 41 and lever 37. The lever 37 is pivoted coaxially with the steelyard and engages the underside thereof when raised. Specifications 452,168 and 452,169 are referred to.
Patent GB-958776-A (GB)
Title: Improvements in and relating to a process for producing hydrazine
Inventor: HARDING ANTHONY JOHN
IPC: C02F1/46
Filed: 1960-04-13
Abstract: In a process for producing hydrazine from ammonia, a gaseous phase is subjected to an electric discharge in the presence of a finelydivided liquid phase, at least one of the liquid and gaseous phases containing ammonia.  The liquid may be anhydrous liquid ammonia at - 70 DEG  C. or aqueous ammonia at - 50 DEG  to 0 DEG  C. or higher if it has ammonium nitrate dissolved therein.  The liquid may be forced through nozzles, or against a surface, spun from the edge of a rotating disc, contacted with an/ultrasonically vibrating surface, or atomized by a stream of gas, to produce droplets having a diameter between 0.2 and 2 mm., and may be passed through the discharge several times to increase its hydrazine content.  The gas may consist predominantly of argon, or only of vapour in equilibrium with the liquid but is preferably a mixture containing gas passed as such into the discharge region where its temperature is below 300 DEG  C.  The pressure is preferably between 5 and 100 mm. of Hg and the field strength between 25 and 1500 volts per cm., with a current density below 0.5 amps. per cm.2. The discharge may be between a wire and a cylinder but is preferably in a uniform electric field.  Cooling may be effected by the circulation of gas or liquid moving as a film over the electrodes or vessel walls.  The electrodes may be of platinum, tungsten, nickel, stainless steel, or chromium- or nickel-plated copper or copper alloys and may be hollow for circulation of cooling fluid, and may have a nozzle through which the liquid phase is sprayed along the axis of the discharge.  A catalyst to promote the recombination of hydrogen atoms may be present in the reaction system.  A specific example is given.  According to the Provisional Specification, a similar process may be used for producing hydrogen peroxide from water. Specification 958,778 is referred to.
Patent GB-736726-A (GB)
Title: Improvements appertaining to the creasing of carton blanks
IPC: B23P15/40
Filed: 1953-05-12
Abstract: 736,726. Creasing-apparatus. BROTHERTON, C. N. July 20, 1954 [May 12, 1953], No. 13226/53. Class 100 (2). In a carton-blank making press creasing blades 8, Fig. 6, for forming fold lines co-operate with backing strips 12 which are channelled to receive the deflected portions 14a of the blank 14 and, according to the invention, parts of the backing strips are cut out to provide the channel C by an element 2 adapted to fit over the blade to convert it into a cutting-tool. By this means accurate positioning of the channel with respect to the blade is ensured. As shown in Fig. 2 the element 2 comprises side members 3 forming between them a lower slot 7 fitting over the blade 8 and upper slot 4 separating the cutting edges 5 which are formed by bevelling the marginal portions of the side members 3. The backing strip 12 is stuck to the impression member 11 of the press and all the creasing blades are provided with conversion elements 2. The height of the cutting edges 5 is such that when the press is then operated the backing strips are cut as shown in Fig. 4 but cutting blades 10, mounted on the same base 9 as the creasing blades, do not contact the impression member 11. After this operation the conversion elements are removed and the press is ready for use, the creased part of the blank 14, Fig. 6, being deflected into the channel C formed between the remaining parts of the backing strip 12 as shown. The invention may be applied to flat-bed or cylinder presses.
Patent GB-641041-A (GB)
Title: Improvements in recovery of chlorobenzene
IPC: C07C17/00
Filed: 1948-05-14
Abstract: Chlorobenzene is recovered by continuously hydrolysing p-chlorobenzenesulphonic acid by boiling a mixture comprising p-chloro-benzene-sulphonic acid, sulphuric acid and water at a temperature below 240 DEG  C., continuously removing vapours of water and chlorobenzene distilling from the boiling mixture, condensing the vapours, adding to the boiling mixture p chlorobenzenesulphonic acid, an alkali metal compound capable of combining with sulphuric acid to form alkali metal acid sulphate, the amount of alkali metal compound added being insufficient to neutralize all the sulphuric acid in the boiling mixture and water in amount sufficient to maintain the boiling point of the mixture below 240 DEG  C., the amount of alkali metal compound being such that an aqueous inorganic layer forms below the mixture, the said inorganic layer comprising alkali metal acid sulphate, sulphuric acid and water, and withdrawing said layer at a rate substantially equal to that at which it is formed.  The p-chlorobenzene-sulphonic acid may be the crude product formed as a by-product during the manufacture of 2,2-bis-(p-chlorophenyl)-1,1,1-trichloroethane.  The alkali metal compound is preferably a sodium compound, e.g. sodium hydroxide, and is added in such amount that the inorganic layer formed contains from 68-72 per cent of sodium sulphate, 23-27 per cent of sulphuric acid and from 4-6 per cent of water.  Other alkali metal compounds specified are sodium chloride and sodium sulphate.
Patent GB-257024-A (GB)
Title: Improvements in the manufacture of prepared tar for road-making and the like
IPC: C10C3/04
Filed: 1925-05-21
Abstract: 257,024. Sensicle, L. H May 21, 1925. Tar.-Tar for road-making &c. purposes is dehydrated by treatment in a centrifugal separator followed by forcing air through the resulting mass at a temperature sufficiently high to reduce the moisture content to about one-half per cent without distillation. The tar or mixture of tars is heated by a steam coil 6 to about 40‹ C. in a container 1 and forced by compressed air from a pipe 8 to a centrifugal separator 2 the tar on entry being heated by a steam pipe 4 to 55‹ to 60‹ C. The partially dehydrated tar is then passed to a vessel 5 in which it is maintained at 60‹ and treated with compressed air from a pipe 9. During agitation, bitumen is added when necessary and the free carbon content adjusted by adding the material removed from the bowl of the separator 2 in the cleaning operation. The viscosity may be adjusted and the content of naphthalene and light oil reduced by similar treatment, and creosote or anthracene oil fractions, or pitch, may be added before or after dehydration.
Patent GB-1075882-A (GB)
Title: Improvements in or relating to nozzles for injection moulding machines
Inventor: LEWIS RICHARD THOMAS
IPC: B29C45/20
Filed: 1965-03-29
Abstract: 1,075,882. Injection moulding machines. T. H. & J. DANIELS Ltd., and R. T. LEWIS. Dec. 31, 1965 [March 29. 1965], No. 13307/65. Heading B5A. An injection nozzle has a discharge passage defined by a curved surface 15 of convex form, the surface 15 forming an arc of a circle whose centre lies in a transverse plane spaced forwardly of the nozzle orifice.
Patent GB-939480-A (GB)
Title: Improved solid lubricating mixtures
Filed: 1962-04-06
Abstract: A lubricating mixture comprises molybdenum disulphide and 25-70% of zinc sulphide.  Lubricating oils or greases of mineral and/or synthetic origin may be included.
Patent GB-167322-A (GB)
Title: An improved construction of scooter
IPC: B62K3/00
Filed: 1920-05-17
Abstract: 167,322. Webster, A. C. May 17, 1920. Foot-cycles.-Relates to scooters of the type in which the steering-head, forks, and front wheel are adapted to be folded down on to the upper surface of the footboard. The footboard 1 is provided with a slot in its front end, in which is pivoted one end 3 of a metal strip, which is bent to form the steering-head 4 and a downwardlybent portion 5 having an aperture adapted to be engaged by a spring locking-pin 7 mounted on the footboard 1. By disengaging the pin 7, the member 3, 4, 5, carrying the forks 8, wheel 9, and steering-column 10 can be folded about a pivot pin 13, the portion 5 passing downwards through the slot in the front end of the footboard 1. The pivot pin 13 passes through the sides of a U-shaped metal strap 12 embracing the forward slotted end of the footboard. The spring locking-pin 7 is slidably mounted in a casing 15, Fig. 6, and is held in the disengaged position by rotating it to cause a projection 19 in the casing to engage a circumferential groove 21 in the pin; this projection engages a longitudinal keyway 20 in the pin when the latter is in the operative position shown.
Patent GB-528436-A (GB)
Title: Improvements relating to gloves
IPC: A41D19/00
Filed: 1939-05-08
Abstract: 528,436. Gloves. WOLSEY, Ltd., and WILLIAMS, R. C. May 8,1939, No. 13661. [Class 141] The palms and fingers of gloves made of knitted or woven wool, cotton, or other textile fibres, have applied to them by spraying, painting &c. a thin adhesive layer of rubber or other substance which will afford a good grip.
Patent GB-1347202-A (GB)
Title: Salts of dihydrochalcone derivatives and their use as sweeteners
IPC: A23L27/30
Filed: 1972-03-23
Abstract: 1347202 Salts of dihydrochalcone derivatives NUTRILITE PRODUCTS Inc 23 March 1972 [14 May 1971] 13666/72 Heading C2C [Also in Division A2] Monobasic salts of dihydrochalcone derivatives of the formula wherein R is hydrogen or hydroxy, R<SP>1</SP> is hydroxy or C 1-3  alkoxy, R<SP>11</SP> is neohesperidosyl, #-rutinosyl or (#-D-glycosyl, M is ammonium or a mono- or divalent alkali or alkaline earth metal and n is 1 or 2, corresponding to the valence of M, may be obtained by reacting a hydroxide, oxide or salt of ammonia or of one of the said metals with the dihydrochalcone in an aqueous medium in a molar ratio of approximately 1 : 1. The compounds may be used as sweetening agents; certain of the compounds may be used for medicinal applications or as X-ray contrast media.
Patent GB-552580-A (GB)
Title: Improvements in or relating to dish washing machines
IPC: A47L15/22
Filed: 1941-10-24
Abstract: 552,580. Dish-washing machines. ELECTROLUX, Ltd. (Aktiebolaget Elektrolux). Oct. 24, 1941, No. 13693. Drawings to Specification. [Class 138 (i)] Relates to dish-washing machines of the kind wherein a spraying member adapted to project jets of cleansing liquid on to the articles being treated is located in a container having its walls provided with surfaces facing the spraying member and the articles and so disposed as to change the direction of jets of liquid impinging thereon, and consists in providing the walls with a large number of concave depressions, each bounded at its edge by a closed line and including a smooth spherical or part spherical surface adapted to divert or deflect impinging jets of liquid.
Patent GB-372097-A (GB)
Title: Process for introducing and maintaining high tension currents in gas testing apparatus
IPC: H02M7/06
Filed: 1931-05-03
Abstract: 372,097. Automatic regulation. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. May 8, 1931, No. 13701. Convention date, May 12, 1930. Addition to 371,859. [Class 38 (iv).] In a process as described in the parent Specification for the regulation and maintenance of high voltage in apparatus e.g. dust separators, a piston moving in a cylinder is used for the slow regulation up and rapid reduction of tension periodically. A medium, such as oil, is supplied to the cylinder from a continuously running pump so that the piston moves to effect slow regulation up, and, when sparking occurs, the relay that responds opens a valve and allows oil to flow from under the piston which then moves rapidly down under the action of a spring or weight to effect rapid reduction of tension. The valve then closes and the cycle begins again.
Patent GB-998246-A (GB)
Title: Adjustable density sunglasses
Inventor: BARATELLI CHARLES ANTHONY
IPC: G02C7/12
Filed: 1964-04-03
Abstract: 998,246. Sunglasses. PENNSYLVANIA OPTICAL CO. April 3, 1964, No. 13782/64. Heading G2J. A pair of adjustable density polarized sunglasses comprises an outer frame member 12 carrying a pair of fixed polarized lenses 24 and an inner frame member 14 carrying a pair of rotatable polarized lenses 30 which are connected by a flexible strip 34 disposed in and slidable longitudinally of a channel 32 formed in the inner frame member 14, whereby simultaneous adjustment of the polarizing positions of the rotatable lenses relative to the fixed lenses is effected. Sliding movement of the strip 34 is controlled by a finger 40 projecting from the strip through an aperture 42 in the nose bridge portion of the frame member 14. The lenses 24 and 30 are separated by gaskets 31.
Patent GB-1127398-A (GB)
Title: Process for producing precast concrete bodies
IPC: B28B3/02
Filed: 1967-03-23
Abstract: 1,127,398. Moulding concrete bodies. J. POETSCH. 23 March, 1967 [25 March, 1966], No. 13889/67. Heading B5A. A preset concrete body is formed in a mould, the top of which is closed by a section (2) mounted on a pneumatic or hydraulic ram. The mould is vibrated and pressed and the ram is relieved of its load until cessation of stress in the concrete, during or after which (depending on the consistency of the concrete) the sides of the mould are removed. The ends of the moulding are then preferably supported by a plate of the same cross-section as the casting, the section (2) is slid along axis of the concrete body and then lifted off by the ram along an arc to which the axis of the concrete body is a tangent. The ram is retracted slightly, the section (2) swung back to a position above the block and the ram is then further retracted in preparation for the next cycle. This method of removal of the shaping surface allows the preparation of chamfered edges with a smooth surface. The sequence may be automatically controlled.