baber/WOPTO huggingface dataset:
Patent GB-637134-A (GB)
Title: Improvements in or relating to the manufacture of cellulose ethers
IPC: C08B11/00
Filed: 1947-10-17
Abstract: Cellulose ethers are made by reacting cellulose with an etherifying agent in the presence of a caustic alkali in aqueous solution and a liquid ether-alcohol.  Ether alcohols specified are the lower mono-alkyl ethers of glycols such as the mono-methyl, mono-ethyl, mono-propyl, iso-propyl and mono-butyl ethers of ethylene glycol, diethylene glycol and other polyethylene glycols, the mono- and di-lower alkyl ethers of glycerol, and cyclic compounds such as quinitol mono-alkyl ethers.  The ether-alcohol may be used in the proportion of 10-30 per cent based on the weight of the cellulose. It may be added either simultaneously with or after the etherifying agent, or at an earlier stage in the process.  The alkali cellulose may be made by impregnating the cellulose with a caustic alkali solution, particularly of 70 per cent strength.  The etherification temperature may range from 40-140 DEG  C., depending on the etherification agent used.  Alkyl and substituted alkyl ethers of cellulose, for example propyl and butyl ethers, benzyl ethers and mixed ethers such as methyl-hydroxy-ethyl cellulose may be produced. In an example, wood pulp in sheet form is soaked in caustic soda solution containing mono-methyl glycol, pressed, and then introduced into an autoclave to which methyl chloride is added.  In another example, portions of chloracetic acid are added at intervals to shredded wood pulp, caustic soda solution and mono-methyl glycol and the mixture is kneaded.  Carboxymethyl cellulose is precipitated with alcohol, washed and dried.  Specification 637,133 is referred to. The Provisional Specifications also refer to the use of an organic liquid containing one or more hydroxyl groups and to cyclohexanol and its alkyl substitution products, ketones such as acetone and methyl ethyl ketone which may be regarded as enols, and, in the first Provisional Specification, to simple monohydric alcohols such as butanol.
Patent GB-853506-A (GB)
Title: Fluid circulation controls for rotary reservoir fluid couplings
Inventor: BECKER JOHN EDWARD
IPC: F16D33/14
Filed: 1959-08-14
Abstract: 853,506. Hydraulic couplings. ROBSON, C. Aug. 14, 1959, No. 27913/59. Class 69 (2). An hydraulic coupling comprises an impeller element 4, a runner element 13, a fluid-containing coupling chamber 6 and a fluid reservoir 8. rotatable with the impeller element, and a scoop element 23, 24 in each chamber having an orifice 37, 38 movable towards and away from the peripheral wall of its chamber such that as one orifice moves towards the other orifice moves away from the wall of its chamber, the reservoir chamber and fluid coupling chamber being proportioned in volumetric relation to each other to provide a predetermined range of synchronous centrifugal fluid-ring volumes whereby the inside diameters of any two synchronous rings in the two chambers are always substantially coincident with the orifices of the scoop elements. The wall of the reservoir is shaped with convex and concave portions 30 ... 34 so that the maximum width C of the reservoir is at the same radius as the maximum width E of the coupling ; the fluid in the coupling is connected to the chamber 6 by orifices 17. During operation, the scoop elements 23, 24, which are secured to a rod 26 rotatable in a stationary bearing part 28 by a lever 27, are moved so that fluid is transferred from the chamber to the reservoir or vice versa according to the degree of drive to be transmitted between the driving and driven shafts 2, 9, the surface of the annular rings of fluid in the chamber and reservoir always being substantially coincident with the orifices 37, 38 of the scoop elements.
Patent GB-693304-A (GB)
Title: Means for starting and stopping internal combustion engines
Inventor: SILK THOMAS HAMPSON
IPC: F02N11/08
Filed: 1950-11-16
Abstract: 693,304. Starting prime movers. HAMPSON INDUSTRIES, Ltd. Sept. 27, 1951 [Nov. 16, 1950], No. 28030/00. Class 38 (iv). [Also in Group XXVII] In means for starting and stopping an engine a comprising two manually-operable switches d, d<SP>1</SP> each provided with a time lag device, one of the switches d serves to open and close the engine starting circuit whilst the other switch d' serves to open and close an engine stopping circuit. The engine a which drives the generator g is started by an electric motor b having an axially movable pinion p. The starter motor b is energized from a battery c upon actuation of the switch d, the latter automatically opening the circuit after a given lapse of time; the engine is stopped by operation of switch d<SP>1</SP>, which through an electromagnet f stops the supply of fuel or cuts out the ignition, the stopping switch d<SP>1</SP> remaining closed for a given period. The A.C. or D.C. generator supplies a load circuit h as well as charging the battery. Instead of being directly in circuits connected to the battery c the switches may operate electromagnetic switches which are connected in the battery circuits. The engine may be started by compressed air in which case the switch d serves to control an electromagnetic valve through which air is passed to the engine.
Patent GB-1167022-A (GB)
Title: Improvements in Electro-Magnetic Relays.
Inventor: SMITH RAYMOND HAROLD BEVAN
IPC: H01H50/58
Filed: 1966-06-23
Abstract: 1,167,022. Post Office relays. ENGLISH ELECTRIC CO. Ltd. 20 June, 1967 [23 June, 1966], No. 28065/66. Heading H1N. An electromagnetic relay has a stack of contact spring arms 6A, 6B extending from a supporting block 1 of insulators 5, the "fixed" contact springs 6B being engaged by the ends of respective stops 7 each mounted between cooperating fixed and movable contacts and secured to its respective fixed contact 6B at a point 13 spaced from the side of the supporting block. The stop 7 and contact spring 6B may be secured together by welding or riveting. The fixed contacts may be adjusted by bending the members 7 and 6B to the left of the point 13 without affecting the spring bias of arms 6B against stop 7. A standard operating card 10 may, during manufacture, have appropriate side arms "cropped off" to suit the contact sets being provided on the relay.
Patent GB-1045308-A (GB)
Title: Helicopters
IPC: B64C27/04
Filed: 1963-07-16
Abstract: 1,045,308. Helicopters. M. L. MIL, and A. S BRAVERMAN. July 16, 1963, No. 28070/63. Heading B7W. A helicopter which flies in steady level flight with its fuselage vertical axis II-II tilted under the influence of the forces generated by the lifting rotor 9 and anti-torque rotor 10, has the cockpit inclined to the remainder of the fuselage so that its vertical axis I-I remains upright. The undercarriage is such that when grounded, axis I-I is upright. A formula is given for the angle between the axes in terms of the rotor thrusts and geometry.
Patent GB-647164-A (GB)
Title: Improvements in and relating to an automatic lathe
IPC: B23B13/00
Filed: 1947-10-21
Abstract: 647,164. Lathes. MATTHEY, A. MURBACH-. Oct. 21, 1947, No. 28103. Convention date, Dec. 15, 1944. [Class 83 (iii)] An automatic lathe has a rotary tool-head 9, means for controlling the feed of tools 5 into the bar stock, and means for feeding and guiding the bar stock, the bar feed means comprising two peripherally-grooved wheels 3 geared together and one of the wheels being driven by a oneway ball clutch 23. A belt 11 drives the toolhead 9, which is journalled on ball-bearings in the frame 1, and a holder 2 carrying two tools 5 is pivoted on a pin 6 on the tool-head. The holder is displaced round its pivot, against the action of a spring 8, by a spring-pressed sleeve 13 which is moved axially by a cam 18 and lever 17 and has a tapered lug 7 acting on a tapered slot 12b in a sleeve 12a fitted in the tool-head and engaging a shoulder 7b on the tool-holder. The bar stock is guided by a die 12 fixed in the sleeve 12a and is fed by two wheels 3, one of which may be fitted with a brake. One of the wheels is driven intermittently by a cam 19 and a lever 20 acting on a pin 24 on the clutch 23, against the action of a spring 22 which returns the lever to a position adjusted by a screw 21. In operation, a reduced diameter is formed on the bar by one of the tools and, after a pause during which the bar feed continues, the sleeve 13 pivots the tool-holder around its pivot 6 so that the other tool parts off the work-piece. The finished work-pieces 25 pass along a tube 14 and fall into a gutter 16, clear of the shavings. In a modification, suitable for operating on bars of non-circular section, the die 12 is non- revolving and is fixed in a block attached to the machine frame; the sleeve 13 slides partly on the block and partly in the tool-head, the latter being mounted on ball-bearings on the block. The Specification as open to inspection under Sect. 91 comprises also a non-rotary workholder 240, Fig. 8 (Cancelled), additionally supporting the work on the other side of the tools from the die 12 and comprising a bevel-closing clamp 204 mounted on a slide 207 adjustable along an arm 208 which is pivoted on a shaft 209 so that the clamp can be swung out of the way to give access to the tool-head. A spring- pressed sleeve 224 closes the clamp and is moved axially to open it, during feed of the bar stock, by a lever 211 pivoted on the arm 208 and engaging by a pin-and-slot connection 216 with a sleeve 214 which is moved axially by a cam 223 through a lever 220 and a T-shaped pin 218. An adjustable contact screw is provided on the lever 220 and a milled nut locks the lever 208 either with the clamp in position or swung out of the way. It further comprises the subjectmatter of Specification 647,165. This subjectmatter does not appear in the Specification as accepted.
Patent GB-680615-A (GB)
Title: Machine for harvesting potatoes or other root crops
IPC: A01D17/18
Filed: 1948-10-29
Abstract: 680,615. Harvesting root-crops. PERET, H. A. Oct. 29, 1948 [Oct. 29, 1947], No. 28115/48. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 30, 1949.] Class 6(iii) A potato-harvester comprises a wheeled chassis 6 carrying a rotatable openwork sifting basket 12 which has internal channels 16 arranged spirally to lead the potatoes, dug by a share 7, to the rear end of the basket which is constituted by a fixed ring 20 having an outlet aperture 21, the basket being supported by internal arms 14 for rotation with a shaft 11. The shaft 11 is rotated by gearing from the axle 2 of the landwheels 3. The rear part of the frame, including the basket 12 and share 7, is lifted by lever 25. The channels 16 are perforated. The Specification as open to inspection under Sect. 91 also describes a modification wherein the ring 20 and outlet 21 are replaced by a part-circular perforated screen forming a rearward extension of the basket.. This subject-matter does not appear in the Specification as accepted.
Patent GB-680134-A (GB)
Title: A machine for grading fruit according to size
IPC: B07B13/05
Filed: 1949-11-04
Abstract: 680,134. Fruit-grading machines. BERRY, F. Oct. 31, 1950 [Nov. 4, 1949], No. 28236/49. Class 117 In a fruit grading machine, the fruit are carried in holes in a laterally inclined endless moving belt a which runs beneath a series of broad stationary rubber bands c arranged transversely of, and edge-on to, the belt at different heights thereabove to displace fruit of corresponding size from its seating hole and allow it to roll from the belt into collecting receptacles. The grading bands c are independently adjustable in height.
Patent GB-485831-A (GB)
Title: Improvements in independent wheel suspensions for vehicles
IPC: B60G11/14
Filed: 1937-10-18
Abstract: 485,831. Independent wheel suspensions. GOLDSCHMIDT, M. (Leighton, J. W.) Oct. 18, 1937, No. 28256. [Class 108 (ii)] In an independent wheel suspension a spring pad 50 is mounted on trunnion supports formed as threaded bearings in link members 16, 18 of the lower triangulated link carrying the king- pin. As shown, the king-pin 22 is connected by an upper arm 14 and a pair of pivoted links 16, 18 to a transverse member 11 and carries a sleeve 26 on which is a stub axle 24. The lower pair of links 16, 18, Fig. 2, is pivoted at one end to a bar 34 which is attached by bolts 37 to the member 11 and at the other end is pivotally connected to a bar 36 which is bored to receive the end of the king-pin 22. The pivot joints at each end of the links are of the threaded type, the external threads on the bushings 40, 42 cutting a thread in their corresponding holes in the link 16. The supporting spring 20 is carried in a pad 50 pivoted by threaded joints to the links 16, 18 and bears at its upper end on an extension of the member 11. The pan 50 is also provided with lugs 56 for the attachment of a shock-absorber 58. A buffer plate 62 is formed on the end of the member 11 for contact with a buffer 64 attached to a bar 66 keyed at one end to the link 18 and loosely mounted in the link 16. The pan 50 may be somewhat rectangular in shape with a depression to receive the spring, or it may be a plate fixed to the links and domed at the centre to take a correspondingly shaped spring-plate which rocks on the dome and provides the pivotal movement for the spring. The buffer 64 may also be attached to a flat plate which is fixed to one link and rests on the other.
Patent GB-522516-A (GB)
Title: Improved shelters and apparatus for the individual protection of persons, animals orbirds against poison gas
IPC: E04H9/04
Filed: 1939-09-29
Abstract: 522,516. Ventilating gas protection chambers. HEATON, F., and WINDRIDGE, A. H. Sept. 29, 1939, No. 28271/38. [Class 137] Babies, dogs, birds and adults are protected from poisonous gases by being housed in a receptacle A permanently closed at one end a<SP>1</SP>, and provided with a removable cover B and window. b at the other end, air being supplied through a filter G and exhausted through a non-return valve H. The cover B is secured by wing nuts d and a metal ring C with arms c. Air is supplied under pressure through a valve g' when required. The breath of the occupant contains carbon dioxide and water, the former being absorbed chemically, and the latter condensed, thus causing a diminution of pressure which draws in air through the filter. This air is heated by the individual, and causes an outflow through the valve H, a breathing effect being established which is stated to keep the air in the container fresh. The cover may be replaced by a wire grid f when it is desired merely to confine an individual in the receptacle.
Patent GB-1065561-A (GB)
Title: Separator for removing foreing matter from a gas stream
IPC: F02C7/052
Filed: 1964-07-09
Abstract: 1,065,561. Separating particles from gases. BOEING CO. July 9, 1964 [July 30, 1963], No. 28342/64. Heading BIT. [Also in Division F1] Air containing dust and liquid particles entering at 19 is induced by lip 18 to converge towards a streamlined member 31, but beyond 18 the air flows along duct 21 and intake passage 12, whilst the dust etc. continues towards member 31 and through an opening 30 leading to a collector 26, 27. Part 27 is connected to a receptacle (not shown) and a further duct from the latter leads back at 42 to a manifold 43 having a series of perforations 44 effecting communication with duct 21. Suction created at 44 by air passing along duct 21 and passage 12 is effective to draw dust, &c., from part 26, where it first collects, through a narrow gap 29 into part 27 and thence into the receptacle. 11 is the compressor of a gas turbine engine and 10' a starter motor. Preferably the whole inlet 16 incorporates electric heating coils.
Patent GB-1318932-A (GB)
Title: 20-acyl-oxy-delta16-pregnene compounds process for their production and compositions containing same
IPC: C07J43/00
Filed: 1970-06-12
Abstract: 1318932 Cardiotonic compositions containing steroid 20-pyrrole carboxylates CIBAGEIGY AG 12 June 1970 [13 June 1969] 28448/70 Heading A5B [Also in Division C2] Cardiotonic compositions for oral, parenteral and topical administration comprise a carrier and a steroid of formula wherein R is a radical of formula  wherein X, Y and Z are each H or C 1-3  alkyl, and R' is H or Me, and there may be further substituents and/or double bonds in the steroid skeleton. Among several specific compounds I given are the known compounds batrachotoxin and homobatrachotoxin.
Patent GB-1018181-A (GB)
Title: Fluorescent tube
IPC: H01J9/395
Filed: 1962-07-24
Abstract: 1,018,181. Fluorescent discharge lamps. U. W. DOERING. July 24, 1962 [July 24, 1961], No. 28458/62. Heading H1D. The mercury vapour pressure in a high-power fluorescent tube also containing a rare gas is kept low (about 0À01 mm. Hg) by using one or two small spots 4 of mercury amalgam, <SP>1</SP>/ 5 -1 mm. thick and about 1 cm.<SP>2</SP> area, which may be deposited 8-12 cm. from the tube end(s). The amalgam may be deposited in a liquid state or as a solid film or foil using the following methods, or combinations of them:-(a) the area in question is first treated with a repellant (polyvinyls, nitrated organic compounds or organic silicon compounds) against the solvent for the fluorescent coating materials prior to their deposition so as to leave, after the deposition, a small clear area. The repellant vaporizes on " firing " of the tube and the amalgam is then applied; (b) easily melting inorganic substances such as boric acid, fluorides or lead oxide (or mixtures of these) are applied to the areas in question together with a binder and, advantageously, coarse or grainy material such as powdered glass, prior to deposition of the fluorescent material. After the latter has been deposited, the tube is fired and the treated areas become roughened thus facilitating application of the amalgam; (c) method (b) is employed, in essence, except for the fact that the fluorescent coating is deposited first of all.
Patent GB-669443-A (GB)
Title: Air humidifier for carburettors of internal combustion engines
IPC: F02M7/20
Filed: 1949-11-07
Abstract: 669,443. Moistening charge. SAMBUELLI, M. Nov. 7, 1949 [Nov. 6, 1948], No. 28504/49. Class 7(ii) In a moistening device attached to a carburetter air inlet and comprising a vessel 1 in which a constant water level is maintained by a float chamber 10, the air enters through a filter 2, sweeps across the water surface and escapes through a bell-shaped member 6 and outlet pipe 5. A gauze or perforated metal screen 7 situated at the water surface prevents splashing, and a similar screen 18 filters water drops from the air stream. The .pipe 5 is clamped to the carburetter inlet by a collar 8.tightened by a winged screw 9. In a modification, the pipe 5 is arranged at the side of the vessel 1 and. connected to the bell 6 by a further pipe. Alcohol or other anti-freeze substance may be added to the water.
Patent GB-1242508-A (GB)
Title: Improvements in cutters for rotary-scythe mowers
Inventor: BURFORD LEONARD ARTHUR
IPC: A01D34/73
Filed: 1970-06-12
Abstract: 1,242,508. Rotary-scythe mowers. FLYMO S.A. 12 June, 1970, No. 28683/70. Heading A1F. An elongated blade cutter of a rotaryscythe mower has cutting portions 7, inclined at angles of between 10 to 45 degrees to the horizontal, equipped with cutting edges or tips 9 which describe a circle in a horizontal plane and do most of the cutting work and which enable the mower to cut grass with horizontallyextending networks of leaves and the like. A blower 3 sucks in air through holes 4 for supporting the mower on a cushion of air and the blade 6, 7 and the blower 3 are carried by shaft 2 connected to the mower engine. Removable distance washers 8 are provided for adjusting the height of the cutter 6, 7 relative to the housing 1.
Patent GB-504895-A (GB)
Title: Improvements in and relating to piles
IPC: E02D5/54
Filed: 1938-10-04
Abstract: 504,895. Piles. NAAMLOOZE VENNOOTSCHAP HOLLANDSCHE BASALTINE TEGELFABRIEK. Oct. 4, 1938, No. 28774. Convention date, Sept. 20. [Class 68 (ii)] To increase the bearing area at the end of a pile, hinged plates are turned out, so as to project radially, by means of a fluid or gaseous medium such as explosives. A number of plates 4 are hinged at 5 to a polygonal member 3 secured to the pile 1, the plates having external tapered ribs 6 which abut against the member 3 when they are extended horizontally so that they may take the weight on the pile. The plates are secured to the pile during driving by means such as bolts 11, 13, which are fractured, when the pile is nearly driven home, by means such as pressure fluid or by explosive containers 15 secured to the plates. The ends of the plate may be retained by a concrete edge which in broken by the force of the explosion. When the plates have been released, further driving force spreads them out.
Patent GB-704870-A (GB)
Title: Improvements in and relating to building boards
IPC: E04B1/94
Filed: 1950-11-24
Abstract: 704,870. Fibre board; coated fibreboard. HJELTE, S. M. Nov. 24, 1950 [Nov. 25, 1949], No, 28823/50. Classes 96 and 140 A building and roofing board comprises a hard pressed fibre board completely impregnated with bituminous material and heated until carbonization has commenced. The bituminous material may be asphalt, tar (wood or coal) heavy distillation products of tar, pitch, talloil pitch or stearine pitch, and it may be stabilized, e.g., by an alkaline material. If impregnating at room temperatures, emulsions, dispersions or solutions are used, but preferably heating and/or vacuum and pressure are used, and the boards themselves may also be heated. An inorganic filler, e.g. mesaa waste calcium carbonate-may be added to the fibres before making the board, or the board may be impregnated with a mixture of bituminous material and mesa. Heating and impregnation may be effected in an inert atmosphere. For roofing one or both sides of the board may have a bituminous coating containing an inorganic filler or an artificial resin or mixtures of these, and water repellant stone chips may be embedded in the coating. To improve the fireproof qualities the coating may have a covering of a waterproof binder with or without stone chips. The binder may be protein plastics, cellulose plastics, e.g. ethyl cellulose, synthetic resins, e.g. vinyl-, alkyd-,or urea compounds, e.g. polyvinyl acetate animal or casein glue hardened by formaldehyde. A binder softener, e.g. a polyhydric alcohol, glycerine, e.g. or an aliphatic ester may also be present, and if the binder is sprayed diluents, e.g. acetone are added. The binder may contain a pigment, and it may also be applied to chips embedded in the coating. Cement mixed with waterglass may be sprayed over the covering. One or both surfaces of the board may be metallized, by spraying with metal, by applying a metal plate, or by admixing dispersed metal with the covering.
Patent GB-242461-A (GB)
Title: Improvements in or relating to cigarette holders and the like
IPC: A24F13/10
Filed: 1924-12-02
Abstract: 242,461. Young, P. Dec. 2, 1924. Cigar and cigarette holders.-A lateral opening b is formed in the wall of a cigarette or like holder a into which a pin or knife blade may be inserted to serve as a stub-end ejector. Referenee has been directed by the Comptroller to Specification 223,291.
Patent GB-1147772-A (GB)
Title: Space decks
Inventor: CAPE RICHARD ALLAN GORDON
IPC: E04B5/14
Filed: 1966-06-28
Abstract: 1,147,772. Lattice space deck. DOMINION BRIDGE CO. Ltd. 28 June, 1966. 28962/66. Heading E1K. A space deck lattice comprises mutually perpendicular main and cross joists, the main joists consisting of lower and upper portions each comprising a single chord 16, 18 respectively and a continuous undulating web bar, 15, 17 the portions being positioned so that the cross joists 11 can be received between the lower portions of the web bars 15 and the upper portions of the web bars 17. The main joist portions and the crossjoists portions are welded together at the points of contact, or by bolting. The cross joist 11 may have a single undulating web bar 20 or may be formed from upper and lower portions in a similar manner to the main joist. The lattice may be assembled in situ, or may be assembled on the ground and jacked into its operative position. Three different sequence of positioning the various components for assembly are described.