baber/WOPTO huggingface dataset:
Patent GB-244074-A (GB)
Title: Spanner
IPC: B25B13/56
Filed: 1925-11-19
Abstract: 244,074. Reboul, L. Dec. 4, 1924, [Convention date]. Rigid-jaw wrenches; shanks.-A spanner of the type comprising two discs with nut-engaging apertures mounted adjacent the opposite faces ot one end of a lever has perforations in the discs which can be brought into alignment with a perforation or perforations in the lever to accommodate a locking bolt or bolts, the other end of the lever being provided with another pair of discs or formed as a spanner, tyre remover, screwdriver, &c. As shown in Fig. 1, two discs c, d, provided respectively with nut apertures f - - i, and j - - m, are mounted one on either side of the end of the Lever a on a pivot band secured in any position by a bolt e passing through holes in the discs. The other end of the lever n has other nut openings. The modification shown in Fig. 5 comprises pairs of discs c<3>, d' and c<4>, d' rigidly secured by rivets p to the ends of the lever a. Modified means of securing the discs to the lever are shown in Figs. 6, 7, the lever a having a notch q to engage the spindle r connecting the discs s, t and being secured by a screw u passing through a hole r in the lever and screwing into a threaded hole in the disc t.
Patent GB-715143-A (GB)
Title: Improvements in and relating to the non-destructive testing of solid bodies using mechanical vibrations
Inventor: HALLIDAY WILLIAM
IPC: G01N29/24
Filed: 1951-12-13
Abstract: 715,143. Ultrasonic inspection devices. KELVIN & HUGHES, Ltd. March 13, 1953 [Dec. 13, 1951], No. 29271/51. Class 118 (2). In an ultrasonic pulse-echo flaw detector with separate transmitting and receiving piezoelectric crystals 10 and 11 coupled respectively to a shock-exciting triggered thyratron 14 and a receiver 18, the crystal 10 is cemented on top of crystal 11 with an intermediate earthed metal screen 12 so that the transmitted pulse on passing through the receiving crystal 11 generates therein only a comparatively weak " direct " pulse which may be balanced out by coupling the thyratron to a similar pair of crystals 20, 21 coupled to an artificial plastic load 22, the crystals 11 and 21 being coupled to the receiver 18 in anti-phase. Alternatively the relative positions of crystals 10 and 11 may be interchanged and crystal 20 may be excited by a separate thyratron.
Patent GB-1180743-A (GB)
Title: Novel Flourinated Heterocyclic Compounds
Inventor: CHAMBERS RICHARD DICKINSON
IPC: C07D307/91
Filed: 1966-06-29
Abstract: 1,180,743. Perfluorinated heterocyclic compounds; diphenyl and diphenyl sulphide derivatives. NATIONAL RESEARCH DEVELOPMENT CORP. 29 June, 1967 [29 June. 1966], No. 29271/66. Heading C2C. Novel tricyclic compounds of the Formula (I) wherein R and R<SP>1</SP> each represents an oxygen or sulphur atom or an -SO 2 - radical or R represents a direct bond between the benzene nuclei and R<SP>11</SP> is a fluorine atom or an amino, alkoxy or hydroxy group are prepared (1) by cyclizing compounds of the formula (II), wherein each X is a fluorine atom or a bromine atom ortho to the thioether bond, (e.g. when X is a bromine atom, by reaction with copper to give compounds in which R is a direct bond, or when X is a fluorine or bromine atom, by reaction with n-butyl lithium, followed by reaction with sulphur dichloride to give compounds in which R is a sulphur atom), or (2) by interconversion from other compounds of Formula (I), e.g. by reacting compounds in which R<SP>11</SP> is a fluorine atom with ammonia or an aikoxide to give the corresponding compounds in which R<SP>11</SP> is an amino or alkoxy group or by reacting compounds in which R or R<SP>1</SP> is a sulphur atom with trifluoroacetic anhydride and hydrogen peroxide to obtain the corresponding S-dioxides and, if desired, subliming those at low pressure to obtain the corresponding compounds in which R or R<SP>1</SP> is an oxygen atom. The fluorinated diphenyl derivatives 2,2<SP>1</SP>- dihydro - octafluorodiphenyl and 2,2<SP>1</SP>- dihydro- 5-methoxy-heptafluorodiphenyl are obtained by hydrogenating octafluorodibenzothiophene and 2-methoxyheptafluorodibenzothiophene respectively. Thioethers of the Formula (II) are obtained by reacting bromopentafluorobenzene or 1,2- dibromotetrafluorobenzene with n-butyl lithium and treating the product with sulphur dichloride.
Patent GB-1373294-A (GB)
Title: Mould for the production of foamed housings or for the filling of hollow preformed housings with foam
IPC: B29C44/12
Filed: 1972-06-22
Abstract: 1373294 Collapsible moulds MASCHINENFABRIK HENNECKE GmbH 22 June 1972 [22 June 1971] 29323/72 Heading B5A A collapsible mould comprises a lower baseplate 2 mounted on a frame 1, side walls 14, 16 pivotably mounted by parallelogram guides 17 on arms 13, 15 of a vertically movable supporting frame 5, and a bottom mould panel 20 supported by vertical guides 21 in the frame 5. The frames 1 and 5 may be locked together by interengaging elements 3 and 4. Stops 19 mounted on the walls 16 serve to close the mould cavity in use and act as stops for walls 14. The mould may be used to form a refrigerator housing by placing a preformed plastics shell 29 on the table 2, lowering the frame 5 until the mould walls assume their operative position, locking the mould, and injecting foamable material into the shell through a feed opening 30. Alternatively the article may be formed by foaming in the mould without the use of a shell.
Patent GB-298645-A (GB)
Title: Arrangement for preventing the corona on the slot sleeves of high tension electric machines
IPC: H02K3/40
Filed: 1928-10-12
Abstract: 298,645. Siemens -- Schuckertwerke Akt.-Ges. Oct. 13, 1927, [Convention date]. Coils; insulation.-To prevent the occurrence of " corona " in a high-voltage machine, there are embedded in the insulation at the point where the conductors issue from the slots a number of layers of conducting material forming a condenser. In the arrangement shown, the outermost layer 15, which is connected to the armature body 11, is the longest, and the inner layers progressively decrease in length.
Patent GB-970096-A (GB)
Title: Improvements in bogies
Inventor: KERRIDGE NORMAN EDWARD
IPC: B61F5/22
Filed: 1962-07-31
Abstract: 970,096. Railway vehicle undercarriages; changing gauges. STOTHEKT & PITT Ltd. July 30, 1963, No. 29470/62. Heading B7L. A railway vehicle bogie mountable at the corner of a tower crane comprises a bogie frame, in the form of two channel members 8 connected by a plate 10, for supporting at least two rail-engaging wheels W, the frame being pivotally connected by a bolt 6 about a vertical axis, to a horizontal shaft 4 slidable axially and rotable in bearings C, a bracket 2 securable to the crane body 1, whereby the gauge between the wheels of a transversely disposed pair of bogies automatically varies in accordance with the track curvature at sharp bends. A seating 12 is disposed between the frame plate 10 and a rectangularly surfaced control section 5 of the shaft 4. Two bogies as described are preferred to run on the same rail.
Patent GB-396036-A (GB)
Title: Improvements in a process and apparatus for stamping or impressing thin sheets or plates
IPC: B30B5/02
Filed: 1931-10-24
Abstract: 396,036. Moulding plastic sheets. ROUX, B., 142, Rue du Chemin Vert, Paris. Oct. 24, 1931, No. 29577. Convention date, Oct. 24, 1930. Void [Published under Sect. 91 of the Acts]. [Class 87 (ii).] In stamping thin sheets of celluloid, synthetic resin, &c. such as for gramophone records, the stamping pressure is applied directly to the matrix E by a fluid. The matrix E is resilient and is formed as one wall of a closed pressure chamber F and is adapted to be held abutting against a thin sheet G between the plates A, D of an hydraulic or other press. The chamber is then filled with fluid under pressure so that the sheet is impressed. The sheet may be placed between two chambers, or a second matrix C may be placed on the other side between the sheet and the plate A as shown. The pressure is increased to 100 kg. per sq. cm. at a temperature of 100‹ C. The apparatus is then cooled by circulating water, and the press finally released. Auxiliary heating coils may be provided in the chambers. Water, air, steam or other fluid may be used. French Specification 544,942 is referred to.
Patent GB-943407-A (GB)
Title: Improvements in and relating to presses
Inventor: SALTER FRANK SIDNEY
IPC: B30B15/04
Filed: 1959-08-31
Abstract: 943,407. Forging presses. LOEWY ENGINEERING CO. Ltd. Aug. 23, 1960 [Aug. 31, 1959], No. 29620/59. Heading B3H. In a press, particularly a forging press, having a member such as a crosshead 12 slidable over a column 11, a guide shoe 14 located between the column and member is supported on the latter by a flexible pad 16. Each press column 11 has four flat surfaces 11a engaged by four shoes 14 fitting into recesses 13b of a segmental sleeve 13 secured in the crosshead 12. The pads 16 which are supported against flat steel backing plates 15 are composed of natural or synthetic rubber or may each comprise a flexible sac filled with a plastic, semi-fluid or fluid substance. Shims 22 may be fitted between the backing plates 15 and the bottoms of the recesses 13b.
Patent GB-296490-A (GB)
Abstract: 296,490. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). June 9, 1927. Benzanthrone derivatives. - By the action of acid condensing agents (oleum, chlorsulphonic acid, aluminium chloride) on B21-nitro-2-methylbenzanthrone (Specification 8295/11), a mixture of a black vat dye and the lactum of B21-aminobenzanthrone-2-carboxylic acid is obtained, from which the latter may be extracted by an organic solvent such as glacial acetic acid, or by treatment with hot dilute caustic alkali, which hydrolyses the lactam to the free amino acid, which is then precipitated by acid. The pure lactam, extracted by organic solvents, may be similarly hydrolyzed.
Patent GB-484110-A (GB)
Title: Improvements in and relating to skip winding in upcast shafts of mines
IPC: B66B17/26
Filed: 1936-10-31
Abstract: 484,110. Guided skip hoists; delivering material from hoppers. BIRTLEY CO., Ltd., and MUIR, W. I. Oct. 31, 1936, No. 29670. [Classes 78 (i) and 78 (iii)] A pair of air-seal doors 4, 5 at the inlet and outlet of the discharge hopper 3 of an upcast mine shaft are operated mechanically and positively by the skip 2, each by way of a separate system of links and levers. The door 5 is connected by links 12, 15 and levers 14, 16 with a pair of pivoted arms 13 and 11a projecting into the shaft, and the door 4 similarly with another pair of arms 18a and 7a. As the loaded skip arrives at the top of the shaft a ramp 6 thereon actuates the arms 11a and 7a. in turn to close the door 5 and open the door 4 for the reception of the coal. As the empty skip descends the ramp (i actuates the arms 18a and 13 in turn to reclose the door 4 and open the door 5 so that the contents of the hopper are discharged. The hopper remains closed against the passage of air throughout by one or other of the doors. A weighted arm 32 biasses the door 5 to its end positions. A self-locking catch holds the door 5 closed and is released before opening of the door by a lost-motion connection between the door and its operating link 15. In order to equalize the pressure between the shaft 1 and hopper 3 prior to opening the door 4, openings along the upper edge of the door are first uncovered by pilot doors 19 fast on the supporting shaft of the door, the door itself having a lost-motion driving connection with the shaft.
Patent GB-896627-A (GB)
Title: Improvements in or relating to phase-shifting devices
Inventor: WILLIAMS FREDERIC CALLAND
IPC: H01F29/12
Filed: 1958-09-17
Abstract: 896,627. Induction motors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 15, 1959 [Sept. 17, 1958], No. 29693/58. Class 35. Speed variation is effected in a three-phase induction motor by the use of two separate windings in the same slots but fed with current in adjustable phase relationship with each other in such a way as to alter the effective pole-spacing. This involves the use of a discontinuous stator 22 carrying two sets of windings in each slot, one of which is energized directly from the mains or with a small phaseshift from a phase-shifter, while the other is fed with current having a greater proportionate phase-shift from the phase-shifter. The principle of the motor operation is illustrated for a 12-slot stator in Figs. 4 and 5. The vectors OA<SP>1</SP>, OA<SP>2</SP> ... &c. represent the M.M.F. due to the mains-fed windings, while the vectors A<SP>1</SP>, B<SP>1</SP>; A<SP>2</SP>, B<SP>2</SP> . . . &c. represent the M.M.F. due to the phase-shifting windings. In Fig. 4 the angle of phase-shift is zero, while in Fig. 5 it is 90 degrees producing an effective stretching out of the resultant M.M.F.'s OB<SP>1</SP>, OB<SP>2</SP> ... &c. (and therefore the poles) by 25%. Phase shifting in the reverse direction produces pole shrinking. The speed range may be increased by using two equal and opposite phase-shifters feeding opposite ends of the motor winding, and phase-shifters of twice the rate may also be employed with suitable motor windings. The motor may be of linear type. According to the Provisional Specification the motor may be fed from a phase-changer which is now the subject of Divisional Specification 896,628. Specifications 760,250 and 788,234 also are referred to.
Patent GB-428816-A (GB)
Title: Improvements in and relating to a device for the accurate measurement of fluids delivered to the point of consumption in a continuous flow but in a variable manner
IPC: G01F3/20
Filed: 1934-10-17
Abstract: 428,816. Flexible - chamber pumps. PELICH, E., 23, Na Hiebenkach, Brno, Czecho- Slovakia. Oct. 17, 1934, No. 29715. Convention date, Oct. 18, 1933. [Class 102 (i)] [See also Groups XIX and XXIX] Apparatus for measuring liquids comprises a constant-stroke pump operated by liquid supplied by a pump of variable stroke. Two pistons 28, 29, Fig. 2, packed by flexible sleeves 20, 21 are connected by a rod 32 which passes through a partition 24. The outer chambers III, IV form pumping chambers for the liquid measured and are provided with a suction valve 31 and a discharge valve 30, while actuating liquid is supplied to the inner chambers I, II by a sleeve valve 23 controlling an admission passage 27 and a discharge passage 33. The valve 23 is operated by projections 34 on the pistons 28, 29. Alternatively the valve may be held in its extreme positions by spring-pressed pawls 36, Fig. 3, engaging notches in the valve. The pawls are disengaged by fingers 37 on the rod 32, and the valve is then thrown over by a spring 35, which is flexed by the movements of the rod 32. A counter 42, Fig. 5, may be operated by the rod 41 of a piston having a flexible packing sleeve 40, the piston being exposed to the pressure in the chamber I, Fig. 2, through a passage 38. The operating fluid for the apparatus shown in Fig. 2 is supplied by a diaphragm pump 12, Fig. 1, the rod 13 of which is operated by a blade spring 14 connected to a lever 15 operated by a cam shaft 16. Alternatively the apparatus shown in Fig. 2 may be operated by the liquid to be measured, the valves 31, 30 being dispensed with and the chambers I, II being connected by passages to the chambers IV and III respectively.
Patent GB-1150810-A (GB)
Title: Method and apparatus for lining pipe
Inventor: MATHENY FRANCIS MILTON
IPC: B28B19/00
Filed: 1967-06-28
Abstract: 1,150,810. Coating apparatus. PIPE LININGS, Inc. 28 June, 1967, No. 29827/67. Heading B2L. A pipe is lined by conveying at least two ingredients, adapted to harden rapidly when mixed, in separate conduits to the position within the pipe where the material is to be applied, mixing the ingredients at said position, and immediately thereafter applying the resulting material to the interior of the pipe. Coating apparatus comprises a body 13 which is attached by an eyelet 12 to a winch-driven cable and centered by spring fingers 17 in a pipe 11, and is rigid with a motor 14 driving a shaft 20 via a reduction gear unit 15. Shaft 20 is keyed to an extension shaft 23 journalled in a bearing 25 carried by a housing 18 having a screwed connection 19 with unit 15. Coating ingredients are conveyed to housing 18 by pipes 35, 36, and are mixed in housing 18 and an extension 30 thereof by a helical valve 31 rigid with shaft 23 and formed with slots 32. The mixed material passes through apertures 39 in extension 30 into the space between a flared ring 40 rigid with extension 30 and a flared member 44 connected by a ball and socket joint 46 to extension 30. Ring 40 is rigid with a resilient annular member 41 engaging the inner surface of pipe 11. Trailing from member 44 are a plurality of overlapping sheet metal leaves 48 which define a frustro-conical section 49 adapted to spread the lining material to the desired coating thickness. Leaves 48 are flexibly connected to member 44 by bolts 50 and springs 51, and are biased outwardly by a circular spiral spring 53, outward movement being limited by rings 56 connected to eyes 57 on adjacent leaves. In a modification, mixed maerial passes into a heated housing rigid with shaft 23, and is discharged therefrom by centrifugal force through apertures formed radially in said housing.
Patent GB-919884-A (GB)
Title: Sintered silicon carbide compositions and method for their preparation
IPC: H01B1/04
Filed: 1959-09-02
Abstract: A sintered refractory composition consists of silicon carbide and not more than 50% by weight of a metal monosilicide complex comprising chromium and at least one of the metals tungsten and molybdenum and sufficient silicon to form a monosilicide of each metal.  Iron may also be present in a quantity at most equal to the chromium content. The preferred composition contains 50%-98% silicon carbide and 2%-50% of the metal monosilicide complex which comprises 40%-80% of tungsten and/or molybdenum, 5%-35% of chromium and sufficient silicon to form the monosilicide. Alternatively the complex may also contain 2,5%-17,5% of iron in which case the chromium content is also 2,5%-17,5%.  The metal silicide may be formed separately prior to mixing with the silicon carbide or they may be formed in situ during the sintering.  According to one method a powder mixture of silicon carbide, tungsten, chromic oxide, carbon and aqueous sodium silicate is pressed and sintered at 2200 DEG C. to 2450 DEG C. in a carbonaceous atmossphere.  Sufficient carbon is added either as carbon or a carbonaceous resin in ketone to reduce the chromic oxide and also to carburise any free silicon and silicon dioxide present. Specifications 574,170, 597,528 and U.S.A. Specifications 2,412,373 and 2,412,374 are referred to.
Patent GB-383043-A (GB)
Title: Improvements in the manufacture of cellulose acetate
IPC: B41B7/16
Filed: 1931-10-29
Abstract: Cellulose is acetylated in the presence of a aldehyde, e.g acetaldehyde, paraldehyde, propionic aldehyde, or butyric aldehyde, in amount not less than 20 per cent calculated on the weight of the cellulose, until the cellulose acetate produced is soluble in acetone.  In an example, cotton linters, pretreated by means of glacial acetic acid in the presence of a sulphuric acid--phosphoric acid catalyst, are acetylated by means of a mixture comprising acetic anhydride and acetaldehyde, until the product is soluble in acetone. The amount of aldehyde used is between 25 and 100 c.c. per 100 gms. of cellulose.  Specification 15754/14, [Class 2 (ii), Cellulose &c.], is referred to.
Patent GB-362076-A (GB)
Title: Improvements in fluid pressure actuating mechanism for valves and the like
IPC: F16K47/00
Filed: 1930-10-07
Abstract: 362,076. Fluid-actuated valves. ZIMMERMANN & JANSEN GES., Duren, Rhineland, Germany. Oct. 7, 1930, No. 30024. Convention date, Jan. 7. [Class 135.] Valves controlled by pilot or relay valves.-A closure device actuated by a power cylinder has the actuating fluid supplied to each end of the cylinder through a branched pipe, one branch g, leading into the cylinder adjacent the end. cover, the other f opening into the cylinder wall where it is closed by the piston as it approaches the end of its stroke. The pipe f is fitted with an adjustable throttling screw and the pipe g with a leaky non-return valve opening towards the cylinder. The non-return valve may be formed with a bleed passage or a screwed stop may be fitted to prevent it entirely closing.
Patent GB-1049036-A (GB)
Title: Dental cements
Inventor: BAXENDALE LILY
IPC: A61K6/884
Filed: 1964-07-28
Abstract: A dental cement comprises zinc oxide, a hydrogenated resin and/or an ester thereof, and o-ethoxy-benzoic acid.  Powdered fused quartz may also be included, the hydrogenated resin may be partly replaced by natural rosin, and the o-ethoxy-benzoic acid may be added in the form of a eutectic with eugenol isoeugenol, guaiacol, acetyl-acetone, or ethoxy-acetic acid. Other possible additions are aluminium oxide or hydroxide up to 50% by weight of the zinc oxide, mercurous oxide, lead monoxide, calcium phosphate, a polymeric material soluble in o-ethoxy-benzoic acid, short fibres such as nylon flock or glass fibres, glass spheres, antiinflammatory agents such as glycyrrhetinic acid or its derivatives, and a bacteriostatic or bactericidal compound such as neomycin.
Patent GB-305704-A (GB)
Title: Improvements in rotary valves for internal combustion engines
IPC: F01L7/02
Filed: 1927-11-09
Abstract: 305,704. Oxley, F. W. Nov. 9, 1927. Pumps.-A rotary valve 3 is formed with a longitudinal passage 8 through which air is forced by a fan (not shown) enclosed in a cone fixed to the fore end of the valve housing, this air being afterwards injected into the exhaust pipe or silencer, so as to assist in expelling the exhaust and to create a vacuum in the cylinders causing a great inrush of the induction gases.
Patent GB-720301-A (GB)
Title: Liquid mixing valves
Inventor: GRETTON-LOWE REGINALD
IPC: G05D11/03
Filed: 1952-12-16
Abstract: 720,301. Utilizing waste beer. GASKELL & CHAMBERS, Ltd. Dec. 16, 1952. [Dec. 24, 1951] No. 30148/51. Class 102 (1). A liquid mixing valve comprises a pair of intercommunicating chambers having a common outlet and separate inlets connected to a main and another source of supply each chamber containing a piston actuated closure member for controlling the inlet and a float controlled closure member for affording additional control of the second entrance. The mixing valve comprises a body a with two chambers band c connected by an aperture d. The chamber b is connected to a main supply of beer at f and the chamber c to a spillage receptacle p the chambers have a common outlet u. The chamber b has a piston g resting on a spring j; the piston has a member h adapted to close the inlet. The chamber c has a similar piston k with a member m. When the beer is withdrawn, the pistons g, k are depressed and beer from the main source together with spillage flow to the outlet. The spillage is supplied from the receptacle p through a strainer t to a chamber qhaving a float operated valve r with a closure member s resting over an aperture n in an interchangeable boss o which is fitted into the inlet of the chamber c where there is spillage the float r rises to open the inlet, when there is no spillage the float sinks closing the inlet, the beer from the main source only being supplied.
Patent GB-243183-A (GB)
Title: Method of producing pure alumina
IPC: C01F7/26
Filed: 1924-12-16
Abstract: In the production of alumina by the process described in the parent Specification, the aluminous raw material is treated with a weaker sulphuric acid, for instance an acid of density 1.3, and the solution of aluminium sulphate is then evaporated until on cooling, all the water is bound as water of crystallization.  The purification from iron of the alumina obtained by calcination of the sulphate is effected by reducing the iron oxide and treating with gaseous hydrochloric acid free from water and oxygen in presence of aluminium chloride or with chlorine or hydrochloric acid free from water and oxygen in presence of carbon chromium or tin or of carbon tetrachloride or chromium or tin chloride or like substance.