baber/WOPTO huggingface dataset:
Patent GB-166607-A (GB)
Abstract: 166,607. Parry, C. P. Feb. 4, 1920. Cleaning, fluid-pressure processes for.-In apparatus of the kind described in Specification 131,712, the nozzle 5 for blowing steam into the smoke-tubes is constructed with the several guidevanes at the end of the movable guide-vane carrier so that two main reversely-disposed jets are formed making the same angle with the axis of the guide-vane carrier and arranged on opposite sides of it. The pressures tending to make the nozzle move outward are balanced by making the area of the openings 18, 20 at the smoke box end greater than that of the opening in the ferrule 8. To operate the device, steam is admitted by turning the hand-wheel 24 thus causing the nose 23<1> of the operating-spindle to force forward the extension 18 and lift the valve 15 from its seating. Steam passes along the smoke tube through the perforations 9<1> in the de Laval type pressure reducing nozzle 6 to the deflecting nozzle 5. The nozzle 5 is moved into successive longitudinal positions and rotated through 180 degrees in each position by means of the operating-rod 25 which is provided with marks 25<a> corresponding to different areas of smoke tubes. Want of alignment is taken up by the joint 12 between the connecting-rod 11 and the valve-rod 10. Waste steam passing between the valve-rod 10 and the end 20 of the sleeve 14 (this end as well as the end 18 being a close fit on the rod 10) leaks away through the holes 19. When the cleaning is complete, the handwheel 24 is turned back and the steam-valve closes through the action of the overbalancing piston 17. The nozzle is retracted so as to be housed in the ferrule 8 and a pin is passed through a slot in the sleeve 23a which now registers with the hole 10<b> in the valve-rod 10. The operating-rod 25 is then unscrewed. Fig. 4 shows the deflecting-nozzle. The pipe 7 is slotted at opposite sides to form two jaws 5b. The guide-vanes 27, 28 are secured by the pins 27<b> and the screws 28a respectively. The edges 27<c> of the guide-vanes and 5<c> of the carrier are backed off as shown.
Patent GB-1157416-A (GB)
Title: Purification of Caprolactam
Inventor: JACOBS GUNTER
IPC: C07D201/16
Filed: 1968-04-08
Abstract: 1,157,416. Purification of caprolactam. FARBENFABRIKEN BAYER A.G. 8 April, 1968 [27 April, 1967], No. 16693/68. Heading C2C. Caprolactam is purified by extracting it with water from a solution in an organic solvent that is immiscible with water, e.g. benzene, comprising adding 0À1 to 1À6% by weight, based on the amount of water used, of an alkali metal hydroxide to the water used for extracting said caprolactam from said organic solvent and recovering said caprolactam by removal of said water used for extracting by distillation and distilling said caprolactam.
Patent GB-660944-A (GB)
Title: Improvements in or relating to gas blast electric circuit breakers
IPC: H01H33/16
Filed: 1949-06-23
Abstract: 660,944. Gas-blast switches. AKT.-GES., BROWN, BOVERI, & CIE. June 23, ] 949. [July 23, 1948]. No. 16735/49. Class 38 (v). In a gas-blast circuit-breaker, a resistance h is connected by a normally open auxiliary switch i across the interrupting contacts a, b, the movable auxiliary contact being connected to a piston n slidable in a cylinder o and subjected to the circuit-breaker pressure gas through a pipe m. On opening the blast valve f, the contacts a, b separate, the piston n rises closing the auxiliary switch i, and a port p in the cylinder is exposed to the pressure gas which flows round the outside of the cylinder and through an opening in the top thereof, thus equalising the pressure on both sides of the piston n and permitting a spring r to re-open the switch i and disconnect the resistance h. The time for which the switch i is closed is variable by adjusting the size and arrangement of the port p. In breakers where the gas pressure is maintained in the switch chamber 'for voltage isolation, a non-return valve q controlling an opening in the cylinder o beneath the piston is opened, when the blast valve f, having a pressure-discharge opening in the closed position, is operated to close the breaker. The switch i and resistance h, instead of being housed in a common insulator k as shown, may be housed in separate insulators, or they may be separated by a partition in the insulator k (Fig. 2, not shown). Further, the insulators c, k, may lie at an angle to each other. The invention may be applied to a multiple break circuit breaker.
Patent GB-933523-A (GB)
Title: Nuclear reactor
Inventor: COSTES DIDIER
IPC: G21C1/20
Filed: 1962-05-01
Abstract: 933,523. Reactor shields. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 1, 1962 [May 17, 1961], No. 16739/62. Drawings to Specification. Class 39 (4). In a heterogeneous reactor having a liquid moderator the tank holding the liquid is lined with a removable reflector formed of solid moderator elements, each of which is sheathed. The elements may be prismatic graphite rods clad in zirconium or magnesium. For a cylindrical tank with a horizontal axis the elements are inserted along the inner surface of the tank wall and then moved, either upwards or downwards along the wall in engagement with a locating slideway. Where the elements are moved upwards, an external jack penetrates into the tank to provide the upward thrust while for downward movements the elements are lowered by cables.
Patent GB-1355531-A (GB)
Title: Filters
IPC: B01D46/02
Filed: 1971-05-25
Abstract: 1355531 Air filter SVENSKA FLAKTFABRIKEN AB 25 May 1971 [29 May 1970] 16996/71 Heading BIT A support frame within which a wedgeshaped filter bag is fitted (Fig. 2, not shown) to form a cassette type filter comrises separate side walls 3 and end walls 5 each in the form of a wire grid and which are held together by bars 4 which have notches to accept the wires and flaps which fold over the end wires of the side walls to hold the structure rigid. The completed wire frame is fitted onto a base frame 2 which forms the mouth of the filter, the frames being held together by folding flaps 2a over the wires. A number of wire frames may be mounted side by side on a single base frame (Fig. 3, not shown).
Patent GB-1356350-A (GB)
Title: Pumps and motors
IPC: F01B3/00
Filed: 1972-04-13
Abstract: 1356350 Hydraulic reciprocating pumps and motors SPERRY RAND CORP 13 April 1972 [28 June 1971] 17003/72 Heading F1A In a swash-plate pump or motor comprising a rotary cylinder block 32 supported by splines 34 on a drive-shaft 14 so as to be free to seat on a valve plate 12, the casing 10 surrounding the cylinder block is disposed eccentrically with respect to the block so that the clearance for liquid flow between the block and casing is smaller in the region where the pistons are extended and larger in the region where they are retracted, a baffle 38 dividing the casing interior such that hydraulic forces produced by the liquid on either side of baffle 38 during rotation of the block, and acting to tilt the block, are balanced.
Patent GB-545608-A (GB)
Title: Improvements in tubular heat exchange apparatus for fluids
IPC: F28F1/24
Filed: 1940-11-29
Abstract: 545,608. Tubular heat-exchangers. TILLOTSON, A. B. Nov. 29, 1940, No. 17069. [Class 64 (iii)] The tubes 1 of a heatexchanger are externally of oval section and have hexagonal transverse ribs 2. The tubes are arranged with the edges of the ribs touching one another.
Patent GB-320602-A (GB)
Title: Improvements in or relating to tools more particularly hand tools for operating on metal or other materials
IPC: B25G3/18
Filed: 1928-06-13
Abstract: 320,602. Muir, G. S. June 13, 1928. Fixing by grooved members.- In hand tools such as drills, chisels, brush heads, &c. of the kind having a detachable head, tool proper or bit 10 provided with an extension 13 housed in a transverse key-hole shaped slot 12 in the holder 11 and held against transverse movement in the slot by a spring pressed element 14 engaging a. recess 18 in the extension 13 of the tool bit the element 14 is withdrawn for releasing the tool bit by means of a sliding sleeve 23 with cross pin 19 passing through the element 14 and through a slot 20 in the holder. The sleeve 23 abuts against a collar 22 on the holder.
Patent GB-355393-A (GB)
Title: Improvements in or relating to searchlights
IPC: F21S8/00
Filed: 1930-06-04
Abstract: 355,393. Searchlights. WHITE, A. E., 5, Quality Court, Chancery Lane, London.- (Sperry Gyroscope Co., Inc.; Manhattan Bridge Plaza, Brooklyn, New York, U.S.A.) June 4, 1930, No. 17170. [Classes 75 (ii) and 75 (iv).] Mounting reflectors on lamp casings.-The drum and rear wall of a large diameter searchlight are cast as one piece in aluminium or aluminium alloy so as to prevent distortion when tilted about horizontal trunnions, shockabsorbing supporting means preferably being g provided between the rear wall and the reflector. In the form shown, the drum 10 is formed with an internal flange 17 to which a reflector 15 is secured by means of clamps 16 and shock-absorbing pads 41. The rear wall 40 is given less curvature than the reflector 15 so as to form a contracted opening 42 between the centre of the reflector and the rear wall, and the flange 17 is formed eccentrically so as to provide between the flange and the reflector a crescent-shaped opening 32 which is larger at the bottom than at the top. The searchlight is provided with a large bottom air inlet 26 covered by a baffle plate 30, side inlets 27, 28, an outlet 21 closely adjacent the front glass, an outlet 22 substantially over the arc, and an outlet 23 over the reflector. The outlets lead into a ventilation passage 20 which terminates. in a suction pump or fan 25 driven by a motor 24, so that air streams are drawn through the searchlight along the paths indicated bv the arrows. The control box is mounted on the side of the drum. In another form, the driving motor and pump are mounted in a hood on the upper surface of the ' drum, and the control box is mounted directly over the bottom air inlet so as to be cooled by the incoming air.
Patent GB-178761-A (GB)
Title: Improvements in and relating to expansible bracelets or the like
IPC: A44C5/08
Filed: 1921-06-24
Abstract: 178,761. Lord, W. H., and Dean, W. H. June 24, 1921. Bracelets.-In an expanding bracelet, the pairs of outer links a are connected together by cranked cross-bars b, c soldered or otherwise rigidly secured thereto, the cross-bar b at the end of one pair being adapted to rest closely into the crossbar c at the end of the adjacent pair when the bracelet is contracted. The bars b, c pass through the usual middle links f each containing a spring g bearing against the bar b. The sides d of the bar b work in the slotted sides of the links f and retain the springs when the bracelet is expanded. The sides h of the bars c are accommodated in the links a to allow the links f to pivot about the middle portions c.
Patent GB-787922-A (GB)
Title: Process for the manufacture of epoxy compounds containing hydroxyl groups
Filed: 1955-06-15
Abstract: Epoxy compounds containing hydroxyl groups are obtained by reacting a trihydric alcohol in which the hydroxyl groups are attached to adjacent carbon atoms, such as glycerol or one of its homologues, with a chlorine derivative of carbonic acid to produce a carbonic acid ester of the trihydric alcohol, hydrogen chloride being split off during the reaction, and subsequently heating the ester to split off carbon dioxide, thus producing an epoxy ring. Trihydric alcohols which are suitable are, for example, glycerol, a -methylglycerol, a -ethylglycerol and b -methylglycerol. Suitable chlorine derivatives of carbonic acid are phosgene or a chlorocarbonic acid ester.  When phosgene is used as starting material, hydrogen chloride is split off in the first step and is removed as quickly as possible, for example, by boiling out, by passing air through the reaction mixture or by combining the hydrogen chloride with, for example, pyridine and subliming off the pyridine below about 120 DEG  C.  When the polyalcohol is reacted with a chlorocarbonic ester at least stoichiometric amounts of a tertiary amine should be present to bind the hydrogen chloride formed.  It is desirable to use a solvent, for example, dioxane, tetrahydrofurane or tertiary amines.  Suitable chlorocarbonic acid esters for use as starting materials are, for example, the methyl, ethyl, propyl, 2-ethylhexyl, cyclohexyl, phenyl and tetrahydrofurfuryl esters.  In the examples: (a) glycerol is dissolved in dioxane and phosgene is added; the mixture is subsequently heated and glycidol is obtained; (b) chlorocarbonic acid ethyl ester is added to a mixture of glycerol and pyridine and the mixture is subsequently heated to give glycidol; (c) the process of (b) is carried out using (instead of chlorocarbonic acid ethyl ester) the (i) 2-ethylhexyl ester, (ii) cyclohexyl ester, (iii) phenyl ester and (iv) the tetrahydrofurfuryl ester, to give glycidol in each case; and (d) chlorocarbonic acid ethyl ester is added to a mixture of glycerol and N,N-dimethylaniline and the product is heated to give glycidol.
Patent GB-458369-A (GB)
Title: Improvements in heat accumulating stoves
IPC: F24B1/24
Filed: 1935-06-17
Abstract: 458,369. Cooking &c. stoves. SANDBERG, J. T., 10, Fredsgatan, Stockholm. June 17, 1935, No. 17371. Convention date, June 15, 1934. [Class 126] In a heat accumulator stove as shown, (a cooker), the fuel chamber and heating portion comprises a fixed outer casing 9, having a solidfuel grate 10 and a flue opening 36, a heat absorbing and conducting body 18 extending from the cooking top face 1 into the chamber spaced from the casing 9 and from the grate, and provided with fuel ducts 32 discharging at the lower end into the space between the body 18 and a surrounding inner casing 15 and thence onto the grate 10. As shown, the entry to the fuel ducts 32 is at the centre of the cooking plate 1. The casing 15 is supported by rods 33, which may be adjusted as to height so as to vary the position of the casing 15, which, in addition, may be provided in a number of different lengths. At its lower end body 18 is solid or tubular and may be of circular or ribbed cross-section. Gas circulation holes 16, 17 may be formed in the casing 15 and there may be subsidiary flue openings 34, 35 leading to oven flues.
Patent GB-1383350-A (GB)
Title: Preparation of elastomers using co-ordination catalysts
IPC: C08F210/18
Filed: 1972-04-14
Abstract: 1383350 EODM terpolymers and tetrapolymers E I DU PONT DE NEMOURS & CO 14 April 1972 [15 April 1971] 17404/72 Heading C3P Copolymers of ethylene, a C 3-12  alphamono olefin and a C 6-22  non-conjugated diene are obtained by polymerizing in the presence of a co-ordination catalyst comprising (a) a hydrocarbon soluble vanadium compound, (b) an organoaluminium halide, and (c) an anhydride of the formula where R and R<SP>1</SP> and H, halogen, haloalkyl, alkoxycarbonyl, acyl or aryl or R and R<SP>1</SP> together with the C = C bond' form a benzene ring which may be halosubstituted the atomic Al : V ratio being 5:1 1 to 200 : 1 and the molar ratio of the dihalide in (b) to the anhydride (c) being 1 : 0À1 to 0À95 1. When component (c) is maleic anhydride, i.e. R and R<SP>1</SP> are both hydrogen, the component (c) acts both as a catalyst promoter and as a comonomer, the resulting tetrapolymers being claimed per se. The catalyst component (c) may be added when the polymerization has already been under way for some time, the resulting product being a blend of the usual EPDM terpolymer and the maleic anhydride modified EPDM tetrapolymer. In examples, ethylenepropylene - 1,4 - hexadiene terpolymer / ethylenepropylene - 1,4 - hexadiene - maleic anhydride tetrapolymer blends are obtained using VOCl 3 / (C 2 H 5 ) 3 Al 2 Cl 3 /maleic anhydride catalysts and the terpolymer alone is obtained when the maleic anhydride is replaced by dichloromaleic anhydride or tetrachlorophthalic anhydride.
Patent GB-619966-A (GB)
Title: Improvements in or relating to clutch and brake mechanism
IPC: F16D67/02
Filed: 1946-06-11
Abstract: 619,966. Clutch and brake mechanism. NORRIS & SON, Ltd., C., and NORRIS, C. June 11, 1946, No. 17435. [Class 80 (ii)] [Also in Group XXXIV] In a combined clutch and brake mechanism in which the driven element of the clutch is movable in one direction to engage the driving element of the clutch and in the other to engage a fixed braking member, the displaceable member is controlled by a lever fulcrummed at one end such that the fulcrum is displaceable along an axis parallel to the axis of rotation of the clutch against the action of two springs, one of which determines the clutch engaging pressure and the other the brake engaging pressure. The driving shaft 1 carries the driving member 2 of a cone clutch and has journalled upon it the driven member 3 which has a conical periphery engageable with a correspondingly formed braking member 8, adjustably mounted on the studs 9 by the nuts 11. A rod 26 formed with a crank-pin 23 is rotated to apply either the clutch or the brake through movement imparted by the link 24 to two bars 16 pivoted at their remote ends to a fulcrum block 19 and engaging the thrust ring 13 at substantially mid-length. The fulcrum block 19 is secured to a rod 20 spring loaded in either direction of movement by the unequal strength springs 21, 22 which allow the engaging pressure for the clutch to be greater than that for the brake.
Patent GB-768455-A (GB)
Title: Improvements in the manufacture of spheroidal graphite cast iron
IPC: C21C1/10
Filed: 1954-06-14
Abstract: A method for producing spheroidal graphite cast iron comprises subjecting a white iron, containing sulphur and not more than 0.15 per cent Mn, the S/Mn ratio being greater than 1, to a thermal treatment to obtain a spheroidal graphite structure.  The thermal treatment comprises hardening to produce a martensitic structure, followed by a graphitizing anneal at temperature higher than the hardening temperature, e.g. 900-950 DEG C. for 5 to 12 hours.  The thermal treatment may be preceded by a normalizing treatment and may be followed by a hardening and tempering, or the iron may be quenched from the graphitizing anneal and tempered.
Patent GB-207497-A (GB)
Title: Process of manufacture of artificial marble and like substances
IPC: C04B32/00
Filed: 1923-07-05
Abstract: Artificial marble is obtained by melting in the water of crystallization either a double salt such as alum, the constituents of a double salt such as potassium and aluminium sulphates, or a mixture of isomorphous double salts such as chrome alum and common alum, and adding powdered calcium sulphate to the solution, which is then allowed to crystallize in a mould.  The soluble salts may combine to form triple salts with the calcium sulphate.  The process is so conducted that all the water of crystallization is retained; for example, a reflux condenser may be used and the temperature maintained during the mixing at 92-94 DEG  C.  Small quantities of oxides of iron, manganese, &c. may be added to assist the reaction.
Patent GB-1180215-A (GB)
Title: Production of Substituted Phenols
Inventor: SHOOTER DOUGLAS
IPC: C07C333/16
Filed: 1966-04-21
Abstract: 1,180,215. Alkylated phenols. IMPERIAL CHEMICAL INDUSTRIES Ltd. 17 April, 1967 [21 April, 1966], No. 17495/66. Heading C2C. A process in which phenol or a mono-alkyl phenol is alkylated by contacting it at an elevated temperature with a mono- or polyalkyl benzene of which the alkyl groups if straight have at most 10 carbon atoms and if branched have at most 4 carbon atoms is carried out in the presence of a phenol alkylation catalyst which comprises an alumino-silicate and/or a halide of a metal or boron, which halide has an acidic reaction in water. In the examples phenol in admixture with toluene, p-xylene or 1,2,4-trimethyl benzene is preheated and passed through a catalyst bed consisting of crystalline aluminosilicate with a channel size of about 13  containing 0.7% lanthium and 1% cerium. Among the products are cresols and xylenols. Other catalysts specified include aluminium chloride, tin chloride, zinc chloride and borontrifluoride.
Patent GB-643447-A (GB)
Title: Process and device for obtaining stereoscopic drawings
IPC: B43L13/18
Filed: 1946-06-12
Abstract: 643,447. Stereoscopic drawings. PARETO, E. J. June 12, 1946, No. 17577. Convention date, Nov. 17, 1945. [Class 11 ] A process for making stereoscopic drawings comprises mounting a sheet a containing a master drawing and a similar sheet b upon which a complementary drawing is to be produced in an apparatus so that the first sheet is capable of lateral movement with respect to the second sheet, and associating with mechanism for moving the first sheet a pointer moving over a scale calibrated to indicate stereoscopic displacements corresponding to varying distances of points on the master drawing from the eye of the viewer, and including in the apparatus means whereby the position of points on the master drawing can be indicated on the second sheet, each such point being marked on the second sheet after movement of the master sheet in accordance with the scale, to make up the complementary drawing. As shown, the master sheet a is mounted on matt glass in a laterally-movable frame 2 and the sheet b is mounted above it on a glass plate in a fixed frame 1. The sheets are transparent and a source of light beneath the frame 2 projects the master drawing on to the sheet b, Operation of a knob simultaneously moves the frame 2 and the pointer. For any given point on the drawing the pointer is set corresponding to the assumed distance of the point from the eye of the viewer, and the point is then marked on the sheet b immediately above its position on the displaced sheet a. The operation is repeated for all points on the master drawing and the complementary drawing is thus obtained. The two drawings may be reproduced photographically and to a suitable size for viewing in a stereoscope. According to the Specification as open to inspection under Sect. 91, a pantograph can be used for the transfer of point positions from the sheet a to the sheet b. This subject-matter does not appear in the Specification as accepted.
Patent GB-388639-A (GB)
Title: Methods of removing metal from metal articles
IPC: F23D14/54
Filed: 1932-06-22
Abstract: 388,639. Dividing by fusion. LINDE AIR PRODUCTS CO., 30, East 42nd Street, New York, U.S.A.-(Assignees of Oldham, S. R. ; 4753, Lake Park Avenue, Chicago, U.S.A.) June 22, 1932, No. 17608. Convention date, July 10, 1931. [Class 83 (iv).] Grooves are cut in metal surfaces, or irregular surfaces, surface cracks; and otherdefects are removed from steal billets prior to rolling, by heating the metal to be removed to the temperature of ignition and directing thereupon at an acute angle to the surface an oxidizing gas stream, preferably of oxygen, having a velocity only sufficient to oxidize the metal and blow it away from the surface. The metal is thus oxidized at a rate more rapid than that at which it is fused and it is thus blown away in a crumbling and non- adherent condition. The discharge velocity of the oxidizing gas computed on the assumption that the gas is at atmospheric pressure and at 70‹ F. is between 200 and 1000 ft. per second. The head of an oxyacetylene cutting blowpipe with a central oxygen jet is provided with an adapter 20 having a seri s of holes 21 communicating with the gas mixture for heating, and a hole 22 communicates with the cutting oxygen supply. The holes 21 communicate by an annular groove 23, 26 with a series of holes 27 in a nozzle 24 secured to the adapter by a nut 25, and the hole 22 communicates with an eccentric hole 29 of large diameter in the nozzle, provided with a screen 30 to reduce the turbulence of the oxygen. The holes 27 are arranged in a curve so as to produce a curviplanar heating flame or they may extend right round the central jet so as to envelop it. The hole 29 may be 0À377 inch in diameter and the holes 21, 0À0465 inch in diameter. The blowpipe is preferably arranged at an angle of 30‹ to the surface and is traversed along the work to effect the cut.