baber/WOPTO huggingface dataset:
Patent GB-649498-A (GB)
Title: Improvements in pressure vessels and closures therefor
IPC: F16D65/16
Filed: 1948-12-14
Abstract: 649,498. Covers for resisting fluid pressure. BAKER PERKINS, Ltd. Dec. 14, 1948, No. 32335. Convention date, May 29. [Class 123(i)] An opening 3 in a pressure vessel 1 is sealed by a cover 5 which cannot be removed until pressure equalization on both sides thereof has been effected. In the construction shown, the cover is mounted between a pair of arms 11 having elongated holes to receive opposed trunnions 7 on said cover, the rear ends of the arms being downwardly-curved at 29 and provided with hinge-pins or trunnions 39 for engagement with cam slots 37 in bifurcated brackets 35 mounted on the frame 2 of the pressure vessel, and the forward ends being formed with surfaces 13 adapted to be engaged by notches 15 in locking pins 17 on the pressure vessel and also provided with rounded under-surfaces 18. The arms 11 are jointed near their rear ends by a rigid transverse cross bar 19 to which is hingedly connected the rod 47 of the piston 45 of a hydraulic cylinder 41, or handwheel and screw mechanism, pivoted to the frame 2 at 43, and upon which is mounted a rod 21 adapted to engage, preferably resiliently, a recess 23 in the cover to prevent substantial tilting or swinging of the latter. The arrangement is such that movement of the piston 45 in the upward direction will first cause the arms 11 to pivot on their rounded ends 18 and so withdraw slightly the rear side of the cover 5 from its opening 3, the pins 39 meanwhile traversing portions 37a of the cam slots 37 to continutions 37b thereof, the latter then imparting a rearward movement to said arms, relatively to the cover, to withdraw the surfaces 13 from the notches 15 and so unlock the cover, which latter is finally swung clear of the opening 3 by continued movement of said piston. The cover is applied to the opening in the reverse manner, and may be addtionally locked in the sealing position by further latches at the rear ends of the arms 11.
Patent GB-630481-A (GB)
Title: An improved anaesthetic apparatus for use in the technique of closed circuit anaesthesia and the like
IPC: A61M16/10
Filed: 1947-12-09
Abstract: 630,481. Anaesthetic apparatus. MORISON, J. P. Dec. 9, 1947, No. 32399. [Class 81(ii)] In a closed circuit anaesthesia apparatus the soda-lime canister is mounted directly on the plug of a rotatable cock, by rotation of which the canister may be put into or out of circuit. The canister comprises a container C, Fig. 1, mounted on a tubul'ar fitting on the rotatable plug B and enclosed within a removable airtight cover D held in position by a stirrup E. When the soda-lime is in the circuit air returned from the mask enters through non-return valve A', passes up through the container C, downwards between it and the cover D and out through conduit A<SP>2</SP>. When the canister and plug B are rotated a quarter turn the conduits into the canister are closed and air passes straight through from A<SP>1</SP> to A<SP>2</SP>. Air from the mounting A passes through a changeover cock A<SP>3</SP> by means of which a breathing bag, attached to A', may be connected to the system, and through a non-return valve A<SP>6</SP> to a point at which a supply of anaesthetic gas may be introduced at A<SP>7</SP>. Thence it passes to an ether bottle G which also may be optionally connected to the system by a rotatable plug cock G<SP>1</SP> and so to an outlet connection G<SP>9</SP> leading to the face mask. When the ether bottle is in use the air is directed downwards through an apertured tube G<SP>3</SP>, the holes in which may be closed by a slide G<SP>4</SP> actuated by an external rod G<SP>5</SP>, so that the proportion of air or gas allowed to pass over the surface of the liquid, without bubbling through it, may be varied. The apparatus may be used as a closed circuit, in which case the inlet to and outlet from the face mask are connected to G<SP>9</SP> and A<SP>1</SP> respectively or semi-open circuit with the inlet A<SP>1</SP> open to atmosphere but with gases supplied through A<SP>7</SP>. In the latter case an expiratory valve is fitted to the mask. It is also possible to remove the soda-lime canister and connect this with a breathing bag to one branch of a circuit while the other branch is connected to G<SP>9</SP>, the mask being fitted with an expiratory valve.
Patent GB-1140520-A (GB)
Title: Novel cationic ester compounds, novel polymers and copolymers thereof, their preparation and use
Inventor: BENEDICTIS ALDO DE
IPC: D06M15/267
Filed: 1966-07-19
Abstract: 1,140,520. Cationic ester compounds containing a quaternary nitrogen atom. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 19 July, 1966, No. 32402/66. Heading C2C. [Also in Divisions B2, C3, C6 and D2] The invention comprises cationic ester compounds of the general formula wherein R is C 1 -C 20  alkyl, R<SP>1</SP> is an aliphatic hydrocarbon group having from 2 to 7 carbon atoms and 1 or 2 ethylenic linkages, X is Cl or Br and n is 1 or 2 with the proviso that if n is 2 R<SP>1</SP> has not more than 4 carbon atoms. They may be obtained by reacting the corresponding glycidyl trialkyl ammonium halide with the corresponding unsaturated mono- or di-carboxylic acid in the liquid phase. The liquid phase may be water which may contain other solvents, e.g. C 1 -C 4  alcohols. The reaction is preferably effected at between 45‹ C. and 140‹ C. The R groups are preferably C 1 -C 4  alkyl groups. In an alternative procedure the compounds are obtained by directly reacting the corresponding trialkylamine and the corresponding 2,3-epoxy-1-halo-propane with the corresponding unsaturated mono- or di-carboxylic acid in an inert polar solvent, e.g. a sulphone, N,N-disubstituted alkyl amide, a sulphoxide or a secondary or tertiary alcohol. The reaction, in either type of process, should preferably be carried out in the presence of a polymerization inhibitor and suitable reaction temperatures are from 30‹ to 110‹ C. The products may be polymerized, or co-polymerized with an ethylenically unsaturated monomer, to form polymeric esters which are useful as agents for treating fibrous materials and for the separation of clays and ores from aqueous suspensions. They may also be esterified or etherified on the hydroxyl group, or the ethylenio linkage in the group R<SP>1</SP> may be epoxidized to form epoxy resin precursors.
Patent GB-1247754-A (GB)
Title: Colour photographic silver halide light-sensitive material
IPC: G03C7/20
Filed: 1969-06-26
Abstract: 1,247,754. Colour photographic silver halide light-sensitive material. FUJI PHOTO FILM CO. Ltd. June 26, 1969 [June 27, 1968], No. 32441/69. Heading G2C. A colour photographic silver halide lightsensitive material has incorporated in at least one of the photographic light-sensitive emulsion layers and photographic auxiliary layers a homopolymer or copolymer having ultraviolet absorbing and fluorescent brightening properties and having the recurring unit represented by the formula: wherein R o  represents a hydrogen atom, an alkyl group having from 1 to 8 carbon atoms, an aryl group having from 6 to 12 carbon atoms, a hydroxyalkyl group having from 2 to 4 carbon atoms, an alkoxyalkyl group having from 2 to 6 carbon atoms, a sulphoalkyl group having from 1 to 4 carbon atoms or an alkali metal salt or ammonium salt thereof, R 1 , and R 2  and the same or different, and represent a halogen atom, the group -OR, -SR or -NRR<SP>1</SP> wherein R and R<SP>1</SP> taken separately are the same or different, and represent a hydrogen atom, an alkyl group having from 1 to 12 carbon atoms, a hydroxyalkyl group having from 1 to 4 carbon atoms, a.sulphoalkyl group having from 1 to 4 carbon atoms, an alkali metal salt or an ammonium salt thereof, a carboxyalkyl group having from 1 to 4 carbon atoms, an alkali metal salt or ammonium salt thereof, an aralkyl group having from 7 to 14 carbon atoms, an aryl group having from 6 to 18 carbon atoms, or a cycloalkyl group having from 6 to 10 carbon atoms, R and R<SP>1</SP> taken together represent -(CH 2 ) 4 -, -(CH 2 ) 5 -, -(CH 2 ) 2 -O-(CH 2 ) 2 - or -(CH 2 ) 2 -S-(CH 2 ) 2 -, and m represents and alkali metal atom or the ammonium radical. The copolymer defined above also has at least one recurring unit of the formula: -CH 2 -CH(X)- wherein X represents the group -OH, -OCH 3 , -O CH 2 CH 3 , - OCH 2 CH 2 OH, -OCOCH 3 , -OCOCH 2 CH 3 , -OCONH 2 , -OCONHCH 2 OH, -CONH 2 , -CONHCH 3 , -CON(CH 3 ) 2  or -CONZY wherein Z and Y taken together represent -CH 2 CH 2 OCH 2 CH 2 - or -NBD wherein B and D taken together represent -CH 2 CH 2 CH 2 CO-, -CH 2 CH 2 CH 2 CH 2 CH 2 CO or -COCH 2 CH 2 CO-. The polymer preferably has a molecular weight from 20,000 to 1,000,000. Due to their high molecular weight these compounds do not wash out of the material during processing.
Patent GB-245441-A (GB)
Title: Improvements in or relating to ropes
IPC: D07B1/02
Filed: 1925-12-23
Abstract: 245,441. Whitlock Cordage Co., (Assignees of Whitlock, H. V.). Dec. 30, 1924, [Convention date]. Ropes made by special methods of twisting. - The strands 1 of a rope are each formed of a core 5, comprising fibres twisted about a single axis, enclosed in a covering of yarns 6 helically wound around the core. The pitch of the helices of the core is preferably substantially that of the cover yarns, and the twist is in the same direction. Immediately before being covered the core 5 may be coated or impregnated with lubricant or damp-resisting material or other preservative by passing it through a trough &c. containing the lubricant &c. Specification 198,327 is referred to.
Patent GB-657341-A (GB)
Title: Improvements in or relating to the manufacture of ceramic compositions and of electrical apparatus containing the same
Inventor: PLANER GEORGE VICTOR
IPC: C04B35/468
Filed: 1948-12-15
Abstract: A refractory composition comprises barium titanate containing a minor proportion of barium thorate or its chemical equivalent. The preferred proportion of the thorium component is between 2 to 10 parts by weight of barium titanate.  To aid in moulding the compositions, binders may be included, e.g. bentonite, starch or flour paste, and firing of the mixture may be before or after such moulding.
Patent GB-730415-A (GB)
Title: Improvements in or relating to pipe clips
Inventor: TAYLOR FRANK
IPC: F16L33/04
Filed: 1952-12-23
Abstract: 730,415. Band clips. LATHOM ENGINEERING CO., Ltd. Dec. 22, 1953 [Dec. 23, 1952], No. 32533/52. Class 44. A pipe clip has separately formed lug members B, Bl attached to a metal strap A, each lug member having a free end portion which is drilled to receive a bolt or screw connecting it to the other lug member and a peripheral flange E around the side thereof facing the other lug member where the clip is applied to a pipe or the equivalent. The lugs B, B<SP>1</SP>, are attached to each end of the strap A either permanently by spot welding, rivetting or the like or as shown one of them B may be permanently fixed and the other B<SP>1</SP> provided with a hook L which can engage one of a plurality of slots K in the strap so that the effective length of the strap can be adjusted. The excess length overlaps the other end in use.
Patent GB-923268-A (GB)
Title: Device for accurately transforming a rotary movement into a translational movement
IPC: F16H19/00
Filed: 1961-09-12
Abstract: 923,268. Linkwork. SOC. D'OPTIQUE ET DE MECANIQUE DE HANTE PRECISION. Sept. 12, 1961 [Sept. 12, 1960], No. 32680/61. Class 80 (3). In flexible link mechanism converting rotation of a drum 1 into linear movement of an indicating or other member 7, two similar metal tapes 3, 10, one of which carries the member 7, are wrapped in opposite directions around the drum and are secured at one end to the drum and at the other end to respective loose pulleys 5, 9 on a shaft 8, the pulleys being rotatably biased relative to each other by a spring 13 which thus tensions the tapes. The drum 1 and pulleys 5, 9 have equal diameters and parallel axes. In a modification, the pulleys 5, 9 are arranged side-by-side with the spring housed in a recess.
Patent GB-1029149-A (GB)
Title: Epicyclic dieface cutter for pelletizing thermoplastics
Inventor: CHISHOLM DOUGLAS STEWART
IPC: B29B9/06
Filed: 1964-08-12
Abstract: 1,029,149. Pelletizing. DOW CHEMICAL CO. Aug. 12, 1964, No. 32807/64. Heading B5A. Extruded plastic material, e.g. polyethylene, polypropylene or polystyrene, is pelletized by a cutter having rotating blades mounted upon a head which rotates relative to the blades. In the embodiment illustrated in Fig. 1 (not shown) material extruded from die 24 is cut by circular blades 22, mounted upon shafts 20, which are carried by a rotating cutter head 12, the blades being rotated relative to the cutter head by air motors 18. Each shaft 20 is at an angle to the front face of head 12, the cutting edges of the blades being so disposed as to cut in a path parallel and just removed from the front face of the die 24 (see Fig. 3, not shown). In an alternative embodiment illustrated in Fig. 4 (not shown) the cutter head 32, carrying knives 40 on shafts 38, is rotatably mounted, by balls 34, on a shaft 36, on which a mixer 46 and the die plate 44 are journalled. The shaft carries a ring gear 50 which engages gears 48 carried by shafts 38, so that, upon rotation of the head 32 by, e.g. belt 52, the knives are rotated relative to the head and the shaft 36 is rotated in the opposite direction of the head, material issuing from apertures 42 thus being pelletized. In further embodiments, the extrusion apertures may be carried upon the curved face of a cylindrical die or frusto-conical die, the knives being suitably mounted upon rotating head members (see Figs. 5-8, not shown).
Patent GB-328556-A (GB)
Abstract: 328,556. Exton, W. G. Jan. 24, 1929. Photometric apparatus; colorimeters.-For the determination of the turbidity, colour and other characteristics of fluids by optical methods apparatus, is provided which enables several optical methods to be employed and the results correlated to obtain both quantitative and qualitative analyses of the fluid under examination. The apparatus comprisesa casing 11, preferably of cylindrical form closed at one end by a cap 12 supporting an electric lamp 15, and fitted at the other end with an eyepiece 20. The casing 11 is normally mounted on a standard adjustable in regard to its height. A transverse plate 23 having a central opening 24 is provided with a bracket 27 for the support of a test-tube 29 containing the fluid to be examined, and the opening 24 is fitted with a glass body 26 treated to provide an opaque surface having a transparent line 63 and two transparent comparison panels 64. A second transverse plate 30 carries a lens 32 and guides 33 for sliding test wedges which pass through openings 35 in the casing 11. A third transverse plate 36 carries on one side a movable series of colour screens and a sliding prism on the other side to facilitate simultaneous observation of the fluid under examination and a comparison object. The three transverse plates 23, 30, 36 are of smaller diameter than the interior of the casing, which is light reflective together with the ends of the casing. The margin of the aperture 37 in the plate 36 is also made reflective to furnish an adaptation field A in juxtaposition with the field of examination. Rods 38 fitted with spacing sleeves 39 carry the plates 23, 30, 36. The sliding wedge, Fig. 2, is provided with two wedge-panels A<1>, B arranged with their tapers in opposite directions. In use light from the lamp 15, passing through the panels 64 and the fluid in the test. tube is observed through the wedges A<1> for turbidity tests, or the wedge B for absorption tests, and the wedge adjusted until a wedge density is reached which obscures the panels 64. The value is read off on the sides of the wedge carrier. Accuracy of vision is assured by the light reflected from the internal walls of the casing 11 and the adaptation field A round the aperture 37 entering the observer's eye so that the vanishing point does not take place in darkness, and optical aberrations are avoided. Colour comparisons may be effected by the insertion of the colour screens at one side of the plate 36. For photometric exam. inations a comparison field is obtained by sliding the Fresnel prism 55 so that direct light from the lamp enters the prism from the tube 56 and is received by the eye from the other face of the prism to form a comparison field. The colour of the comparison field may be modified by a slid. ing colour screen 61, Fig. 5, mounted on the screen 30.
Patent GB-1184579-A (GB)
Title: Xerographic Reproduction Apparatus and signal Storage Device for Time Delay Actuation of Electric Switches.
IPC: G03G15/00
Filed: 1967-07-18
Abstract: 1,184,579. Time switches; momentary contact switches. RANK XEROX Ltd. 18 July, 1967 [19 July, 1966], No. 32864/67. Heading H1N. In a signal storage device for delaying the operation of a switch 110, Fig. 3, for a predetermined interval of time following an input signal, magnets 66 carrying switch actuating projections 67 are slip coupled to a magnetic disc 56 rotating at a predetermined speed and are successively released by latches 82, 83 in response to the input signals. The latches are arranged to release magnets 66 alternately on opposite sides of the disc 56 to reduce the minimum permitted interval between pulses. The input signals actuate solenoid 74 having pawls 79, 80 arranged to step round a star-wheel 104 on a cam-shaft 92 operating to reciprocate the latch plungers 82, 83 against return springs 84. The device is particularly adapted for use in controlling the cutting of continuous copy from a xerographic reproduction apparatus. Pulses received from devices sensing the leading and trailing edges of orginals being copied, thereby controlling operation of the cutters after the time required for processing through the apparatus.
Patent GB-988123-A (GB)
Title: Improvements in and relating to ethers of polyhydric alcohols
IPC: C08G63/676
Filed: 1963-08-20
Abstract: An ether of a polyhydric alcohol is prepared by reacting the alcohol with a hydrocarbon monohalide and an amount of alkali metal hydroxide which is at least equivalent to the hydrocarbon halide in dimethyl sulphoxide solution at a temperature not above the boiling point of dimethyl sulphoxide.  Polyhydric alcohols specified are: glycerol, trimethylol ethane, trimethylol propane, butane-1,2,4-triol, hexane-1,2,5- or 1,2,6-triol, pentaerythritol, dipentaerythritol, mannitol, sorbitol, 2,2,4-trimethylolpentanol, 2,5 - dimethylolhexane-1,6 - diol, hexane - 1,3,4,6 - tetrol, 3,3,3 - trimethylolpropane - 2 - ol, 1,1 - dimethylol-butane - 3 - ol, 3,3 - dimethylolbutane - 2 - ol, 2,2,2 - trimethylol - 1 - phenylethanol, 2,2,6,6-tetramethylolcyclopentane - 1 - ol, 2,2,6,6-tetramethylolcyclohexane - 1 - one or mixtures thereof. The hydrocarbon halide may be added at such a rate that reflux occurs. Halides specified are: ethyl, propyl, n-butyl, iso-butyl, tert-butyl, pentyl, hexyl, cyclopentyl, cyclohexyl, cyclopentenyl, cyclohexenyl, benzyl, a -phenylethyl, b -phenylethyl, allyl, a -methallyl, b -methallyl, crotyl and diphenylmethyl chlorides, bromides and iodides.  The quantity of dimethyl sulphoxide may be 0.5-2 moles per mole of alcohol.  The reaction temperature may be 50-180 DEG  C. and the pressure may optionally be superatmospheric.  The alkali metal halide formed may be filtered off and the water also formed may be distilled off under reduced pressure.  Alternatively, an entrainer may be added to the mixture.  Specified entrainers are: benzene, toluene, xylene, n-hexane, heptane, n-octane, or nonane, cyclohexane, chlorobenzene or mixtures thereof. The hydrocarbon halide may be added whilst the water azeotrope is being driven off from the alcohol/alkali/solvent/entrainer mixture. The dimethyl sulphoxide may be distilled under reduced pressure and the remaining ether mixture may be fractionally distilled.  The recovered solvent may be re-used. The ether may contain free hydroxyl groups.
Patent GB-789542-A (GB)
Title: Improvements in or relating to frames and associated cover plates or gratings for use in roads or paved surfaces
IPC: E02D29/14
Filed: 1954-11-15
Abstract: 789,542. Road surfaces boxes. GILBERT, R. L., and HOBSON, L. J. Feb. 15. 1956 [Nov. 15, 1954], No. 33039/54. Class 107 A road surface box comprises inner and outer frames 10, 11 adjustable for height by packing means 13 which is enclosed by the interfitting parts. The inner frame may be omitted and the cover 19 perform the same function. Screws 21 engage in the inner frame 10 and push against the outer frame to prevent the combination from rocking. In a modified construction (not shown) a rectangular cover with radiused corners is provided, the packing and packing enclosing means being at these radiused corners only. The cover is split diagonally in known manner, The Figure shows the box with packing inserted to the left of the centre line, without packing on the right.
Patent GB-471176-A (GB)
Title: Improvements in electric condensers
IPC: H01G4/08
Filed: 1935-11-28
Abstract: 471,176. Condensers. FODOR, G. Nov. 28, 1935, No. 33068. Convention date, Sept. 11, 1935. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 8, 1936.] [Class 37] A dielectric consists of an adhering film of magnesium hydroxide, produced on magnesium foil or sheet by subjecting the foil to hydroxidation by the action of steam or water at high pressure and temperature, the hydroxidation being stopped before the whole of the metal is converted. The hydroxide layer may be thereafter impregnated with wax or other compound. Wound or plate condensers may be made with magnesium foil strips hydroxidized on one or both sides in association with similar strips or strips of other metal. A strip of magnesium hydroxidized on both sides may form the dielectric between two strips of other metal. British Specifications 173,742 and 259,552, [both in Class 36], U.S.A. Re-issue Specification 16340, and U.S.A. Specification 1,650,972 are referred to. The Specification as open to inspection under Sect. 91 comprises also the conversion of magnesium hydroxide into magnesium oxide by heat for use as a dielectric, and the use of sheets of copper or aluminium covered superficially with magnesium or magnesium alloy subsequently hydroxidized. This subjectmatter does not appear in the Specification as accepted.
Patent GB-520602-A (GB)
Title: Improvements in or relating to the production of styrene
IPC: C07C15/46
Filed: 1938-11-14
Abstract: 520,602. Styrene. FRISCH, H. Nov. 14, 1938, No. 33097. [Class 2 (iii)] Styrene is produced from commercial xylene containing ethylbenzene by chlorinating, separating the chlorinated constituents, treating the separated chlorine constituents with pyridine, a crude pyridine base, aniline or an equivalent organic base, such as a toluidine, xylidine, quinoline or isoquinoline, and then heating the organic base compounds of the chlorinated constituents to produce styrene from the chlorethylbenzene compound. In a modified process the separated chlorinated constituents are passed through a heated tube at a temperature of about 700‹C., which decomposes the chlorethylbenzene to styrene and hydrogen chloride, while leaving the chlorinated xylenes unaffected. In an example, commercial xylene is steam distilled to separate a fraction richer in ethylbenzene ; this fraction is chlorinated in sunshine and the chlorinated products are separated, treated with pyridine or crude pyridine and styrene is then distilled off.