baber/WOPTO huggingface dataset:
Patent GB-882453-A (GB)
Title: Improvements in loading platforms
IPC: B66F7/18
Filed: 1959-07-22
Abstract: 882,453. Counter-balancing apparatus. SWAN HUNTER & WIGHAM RICHARDSON Ltd., and WILSON, G. July 28, 1960 [July 22, 1959], No. 25204/59. Class 78 (2). [Also in Group XVII] A platform 2 for receiving a pallet on which are to be stacked bricks or other goods and for maintaining the upper layer of bricks of the stack at a predetermined level, is mounted on an air spring comprising an air - filled cylinder 7 slidable in a liquid-filled cylinder 30 and provided with a disc valve 22 which allows unrestricted passage of liquid therethrough as the platform descends under loading but restricts the return of the liquid, and thereby controls the rate of upward movement of the platform, when the pallet is removed by a fork-lift truck. The cylinder 30 is sunk in the ground so that the platform 2 is a suitable distance from the ground when unloaded and just above the ground when fully loaded. When not in use the air cylinder 7 and platform 2 can be removed and the liquid cylinder 30 covered by a plate (not shown). The Specification sets out optimum dimensions for the apparatus.
Patent GB-252152-A (GB)
Abstract: 252,152. Fischer, F., and Tropsch, H. May 15, 1925, [Convention date]. Carbon.-In the production of carbon by the decomposition of carbon monoxide in the presence of iron or iron oxide as a catalyst, the latter and also the gas containing carbon monoxide are freed from sulphur before use. In an example commercial carbon monoxide produced by passing carbon dioxide over flowing coke is freed from hydrogen sulphide, carbon bisulphide, and carbon oxysulphide &c. and passed over finely divided iron oxide free from sulphur. When the carbon collected contains only 5 per cent of iron the gases are passed over fresh catalyst. The process may be conducted continuously by feeding the catalyst into one end of the apparatus either in countercurrent to, or in the same. direction as, the carbon monoxide and removing the carbon contaminated with iron from the opposite end. Water gas may be used as the source of carbon monoxide. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also the use of nickel and cobalt and oxides thereof as catalysts. This subject-matter does not appear in the Specification as accepted.
Patent GB-430320-A (GB)
Title: Improvements in or connected with ladders or steps
IPC: E06C1/32
Filed: 1933-09-12
Abstract: 430,320. Ladders. KOLHOSSER, A., 1, Zedernstrasse, Bremen, Germany. Sept. 12, 1933, No. 25226. Void [Abridged as open to inspection under Sect. 91 of the Acts, March 13, 1934]. [Class 20 (ii)] Convertible long and step ladders have the hinge elements c on one member provided with extensions c<1> and the hinge elements d on the other member with laterally cranked portions g forming shoulders which contact with the extensions on the other member when the members are in extended position. A pivoted clip h retains the members in extended position.
Patent GB-1170497-A (GB)
Title: Polymerisation Catalyst
Inventor: GREBBELL JOHN
IPC: B01J23/04
Filed: 1967-06-01
Abstract: 1,170,497. Polymerisation catalysts. BRITISH PETROLEUM CO. Ltd. 13 May, 1968 [1 June, 1967], No. 25242/67. Heading BIE. [Also in Division C5] Polymerisation catalysts comprise Li or Na dispersed on an anhydrous potassium compound having a porosity of 5-60% v/v. Preferably the compound is K 2 SiO 3 , K 2 SO 4  or K 2 CO 3 , in the form of # inch pellets. The alkali metal may be dispersed thereon by vapour deposition, from a solution in liquid ammonia. The alkali metal may be converted to its hydride by treatment with gaseous hydrogen.
Patent GB-754509-A (GB)
Title: An improved mechanical jacking device
IPC: B66F1/06
Filed: 1954-09-01
Abstract: 754,509. Lever jacks. ELLERY, H. A. Sept. 1, 1954 [Sept. 8, 1953], No. 25405/54. Class 78 (3). A jack comprises a toothed standard 1 slidable in a lifting plate 15 and a lever 3 which is provided with members 28 adapted to engage each tooth in turn, and is loosely connected to plate 15 by a link 26. In operation a pin 4 is inserted through the appropriate hole 13 after each stroke of the lever. The plate 15 is secured to the draw-bar 20 of a trailer and the standard 1 is connected with the trailer by links 30. A dish-shaped foot 9 is pivoted to the standard at 6 and further holes 14 are provided in the standard at 6 and further holes 14 are provided in the standard to allow it to be locked in its stowed position by pin 4. In a modification (Fig. 7, not shown), the standard is mounted on a flat foot and the plate 15 carries a loadengaging crutch.
Patent GB-190269-A (GB)
Title: Improvements in or relating to the treatment of cellulose acetates
IPC: C08K5/053
Filed: 1921-09-27
Abstract: Plastic compositions consisting of cellulose acetate impregnated with a small proportion of glycerine are prepared by heating the acetate with excess of glycerine, washing the mass with water until the desired small proportion of glycerine remains, and finally removing the water by evaporation. Alternatively, the mass may be washed as free as possible from glycerine, mixed with an aqueous glycerine solution containing the desired small proportion of glycerine, and freed from water by evaporation.  A proportion of 8 per cent of glycerine is stated to yield the best results.  Plastic compositions so obtained may be moulded by heating in a mould for about fifteen minutes at a temperature of 400 DEG  F., and then applying pressure to the material in the mould.
Patent GB-805635-A (GB)
Title: Improvements relating to gas washing apparatus
IPC: B01D3/32
Filed: 1955-09-06
Abstract: 805,635. Contacting gases with liquids. DIDIER-WERKE A.G. Sept. 6, 1955 [Sept. 7, 1954], No. 25570/55. (Class 55 (2). Gas-liquid contact apparatus comprises a series of spaced bubble-trays each having a trough 17 (Fig. 1) containing a coil 21 through which heating or cooling fluid may be circulated, all the liquid from a tray above being discharged by downcomers 18 into the trough to flow along the trough and having been heated or cooled over weirs 20 on to the tray, finally passing from the tray over weirs 27 into downcomers 29 leading to the trough of the tray below. A modified form of trough 17A with heat-exchange coils 21A is shown in Fig. 4.
Patent GB-756923-A (GB)
Title: Improvements relating to circular sawing machines
Inventor: MATTY FRANK LESLIE
IPC: B23D47/08
Filed: 1952-10-14
Abstract: 756,923. Sawing. MANSILL, BOOTH & CO., Ltd. Jan. 14, 1954 [Oct. 14, 1952], No. 25662/52. Class 145 In a fluid-operated sawing machine for cutting off sections from bar or like stock 6. the engagement of the end of the stock with an end stop 16 operates a hydraulic valve H to initiate an automatic cycle of operations of work-gripping jaws 8, a saw 3 on a movable head 2 and a work-feeding plate 18, the cycles continuing until the stock is used up. A single manual control 50 switches on the sawing driving motor and supplies pneumatic pressure to the system. With the saw head in the raised position, an automatic valve C directs pressure to a cylinder A through a restrictor valve A<SP>1</SP> and to a valve H through a port H<SP>2</SP> so that it acts on a piston 31 on a stem 11 protruding from the end stop 16 and holds a valve 12 on its seat 13. After a delay, an extension 33 of the rod 32 in the cylinder A trips a valve D so that pressure is supplied to automatic valves E and J, the valve E directing pressure through a restrictor valve E<SP>3</SP> to a stock-feed cylinder F and the valve J being set for subsequent supply of pressure to a saw-feed cylinder G through a restrictor valve G'. The stock 6 is fed by the cylinder F until, by engagment with the valve stem 11, it opens the valve 12, 13, thus directing pressure from a pipe 10 through the valve J to the sawfeed cylinder G. A crosshead 23 operated by the cylinder G then lowers the saw head 2 against the action of a dash-pot K and the jaws 8 automatically grip the stock before the cut begins. As the saw head lowers, an abutment 26 moves away from an arm 27 on a valve B and then allows a spring 29 to reverse the valve and at the end of the downward stroke an abutment 26a reverses a valve I. The valve B re-sets the automatic valve C to supply air so that the rod 32 of the cylinder A is quickly retracted, thus operating the valve D and, through the re-set automatic valve E, returning the piston in the stock feed cylinder to its original position. Valve C also directs pressure to the port H<SP>3</SP> of valve H and holds the valve 12, 13 open so that pressure is supplied through the valve J (which has been re-set by the valve I) to the cylinder G to raise the saw head. When the jaws 8 open, the cut-section falls into a collector and, when the saw head is fully raised, the fingers 26 and 26a re-set the valves B and I in position to begin a new cycle. Supply of high-pressure air to the valves B, C, D, E and I is made at S. The piston rod of the feed cylinder F is provided with a carrier plate 18 having a pair of toothed semi-circular gripping members 21 between which the stock is gripped; the upper member 21 is eccentrically pivoted so that, on forward movement of the plate 18, it rotates to grip the stock.
Patent GB-257217-A (GB)
Abstract: .257,217. Taylor, R. Nov. 9, 1925. Ovens; doors; draught, regulating. - An oven or like heated chamber having a pair of horizontally sliding doors is provided with a false or ornamental front 10, between which and the front proper 9 the doors 12 slide; guides 11 for the doors being formed between the two fronts, and the doors protruding when open beyond the sides of the oven. The doors may have panels of glass, mica, or other transparent or translucent material, or of sheet metal. The oven shown is provided with a front portion 24 upwardly inclined towards a ventilator 25 arranged in the oven front, above the doors, and with a checkdraught damper 18 admitting air to the bottom flue 5.
Patent GB-407680-A (GB)
Title: Improvements in or relating to clutches or brakes
IPC: F16D53/00
Filed: 1932-09-16
Abstract: 407,680. Friction clutches. DOUGLAS MOTORS (1932), Ltd., and PULLIN, C. G., Kingswood, Bristol. Sept. 16, 1932, No. 25821. [Class 80 (ii).] A brake or clutch comprises an external band 15 and an internal band 14 expanded against flanges 11, 12 of a drum by rollers 18 operated on by abutment pieces 17 and a cam 16. Two diametricallyopposite cams and abutments may be used. Segments of rollers, taper rollers or balls running in grooves in the hands may be used. Only one band may be used. The rollers and bands may be grooved and ribbed to maintain alignment of the rollers. The faces of the cams may be arranged to give preliminary slow operation. When applied to a clutch the operating cam is of wedge form.
Patent GB-747577-A (GB)
Title: A new or improved hydraulic constant speed drive
IPC: F04C14/02
Filed: 1953-09-18
Abstract: 747,577. Controlling hydraulic apparatus. HOBSON, Ltd., H. M., STOKES, P. H., and WESTBURY, R. Sept. 10, 1954 [Sept. 18, 1953], No. 25822/53. Class 69 (2). An infinitely variable speed ratio is obtained between a driving and driven member and an automatic control of the ratio is provided. The speed of an electric generator or alternator, driven by a hydraulic motor, is maintained constant by a hydraulic system comprising a pump having first and second stages, a flow control device between the two stages, and an excess pressure valve returning to the suction side of the pump part of the liquid delivered by the first stage. The first stage supplies low pressure liquid; the second stage supplies high pressure liquid. In one embodiment, first and second pump stages 11, 13 respectively supply liquid to a hydraulic motor 17 driving an alternator 10. An excess pressure valve 20 is provided and the flow control device comprises a centrifugal impeller 36 driven by the motor. The pressure difference created between the eye and the tip of the impeller is applied across a diaphragm 29 and controls the position of a spring-loaded valve 31. In a modification, the impeller 36 may, instead, control an orifice which bleeds the supply between the first and second pump stages. The impeller 36 may be replaced by a mechanical governor driven by the alternator or by an electrical signal taken from the alternator and operating a solenoid controlled valve. In another embodiment, an orifice 19 between the pump stages is controlled by a valve member 22 mounted on a bi-metallic strip 21 which moves according to temperature. In this embodiment, the flow control device comprises a spring-loaded valve member 24 (Fig. 3), subject to a pressure difference across the orifice 19. Specification 586,260, [Group XXVII], is referred to.
Patent GB-1083727-A (GB)
Title: Method of manufacturing an expanding cement binder
Inventor: LEIRIHK VALENTIN EMILIEVICH
IPC: C04B7/00
Filed: 1965-06-21
Abstract: An expanding cement composition comprises 40-85% by weight Portland cement, 3-30% high alumina cement, 3-15% calcium sulphate, 0-20% granulated blast furnace slag, and 0.5-8% lime.
Patent GB-903846-A (GB)
Title: Improvements in or relating to magnetic separation methods
Inventor: MILLER VICTOR HUBERT
IPC: B01J8/42
Filed: 1959-07-29
Abstract: 903,846. Magnetic separation. ENGLISH CLAYS LOVERING POCHIN & CO. Ltd. July 25, 1960 [July 29, 1959], No. 26102/59. Class 117. In ,the magnetic separation of a mass of particles, a stream of fluid is passed through the mass to produce a fluidized bed, and the more magnetically susceptible particles are collected on a magnetic collector member. In Fig. 2, granular material to be treated is fed through an inlet 22 and air is passed upwardly through the material by way of a pipe 31 and a perforated plate 25. The particles are supported by the air stream in a state of turbulence and are subjected to the field of an electromagnet having poles 34, 35 which project into the separation chamber 20. Particles which are not attracted to the magnet poles pass through a conduit 26, and a valve 27 in the conduit is controlled by a device 40, in accordance with the difference between the pressures above and below the fluidized bed, as detected by a device 37, e.g. a manometer. To remove the particles attracted to the polepieces, the magnet is de-energized, the height of the fluidized bed is allowed to fall to zero and a swivel plate 28 adjusted such that the particles are discharged down a shoot 30 into a bin separate from the one which received the previously discharged particles. Alternatively, the particles collected on the polepieces may be discharged through an exhaust pipe 33. In a modification, Fig. 4, each member of a stack of magnetic collector grids consists of strips 41 of soft iron bent zig-zag and held in a non-magnetic frame 42. With this construction, the polepieces of the electromagnet may be disposed outside the separation chamber. Instead of using air as the fluidising medium, inert gases or liquids, e.g. water, may be used. The method is suitable for treating ground, calcined, refractory aluminium silicate to remove magnetic impurities emanating from crushing rolls. According to the Provisional Specification, the magnetic grids may be in staggered relation to one another. Instead of grids, spaced sets of parallel bars, the bars of one set being horizontal and those of the next vertical, may be employed.
Patent GB-281441-A (GB)
Title: Improvements in and relating to lights and illuminated signals for the rear of motor vehicles and the like
IPC: B60Q1/44
Filed: 1926-10-21
Abstract: 281,441. Powell & Hanmer, Ltd., and Daniel, W. J. Oct. 21, 1926. Retractive switches.-A brake pedal rod has secured to it by means of a clip r a switch comprising a casing q and a spring- pressed plunger t, which in the normal inoperative position of the brake is pressed by the floorhoards so as to break contact with the terminal members u.
Patent GB-973522-A (GB)
Title: Improvements in and relating to plaster of paris bandages and to methods for making such bandages
Inventor: WINTERBOTTOM TERENCE FRANK
IPC: A61F13/04
Filed: 1962-07-09
Abstract: 973,522. Plaster of Paris bandages. T. J. SMITH & NEPHEW Ltd. June 24, 1963 [July 9, 1962], No. 26277/62. Heading A5R. A method of making a plaster of Paris bandage for use for making surgical casts comprises (Fig. 1) continuously passing an open-mesh fabric 11 through a box of plaster of Paris slurry 8, spreading the coating with doctor blade 9 and then passing the fabric 11 over bar 14 and in forced contact therewith to cause the coating to break up into blobs or droplets which occupy and project from some of the interstices of the fabric 11 whilst other interstices remain as apertures through the fabric and then drawing the coated fabric away for drying and subsequent reeling. The coating is greater than 390 grams per sq. m. The fabric may be passed under the bar or passed over one bar and then under a second bar. The bar may be fixed or rotating. The fabric may be of woven glass fibres.
Patent GB-345921-A (GB)
Title: Improvements in apparatus for distributing sand, gravel and the like material on roads and footpaths
IPC: B62D1/22
Filed: 1930-01-03
Abstract: 345,921. Distributers for sand &c. JOHNSON, A. F., Medway Chemical Works, Mill Hall, Aylesford, near Maidstone, Kent. Jan. 3, 1930, No. 26392. Divided on 345,691, and addition to 317,954, [Class 6 (i), Cultivating implements &c.]. [Class 6 (i).] In apparatus for distributing sand, grit, &c. on roads and paths as described in the parent Specification the lower part of the hopper comprises castiron shoes which support gear cases carrying the rotary distributer and adjustable about the axis of the rotary agitator for the purpose of moving the distributer relatively to the outlet of the hopper. The hopper e is shown attached to the motor-driven lorry described in Specification 345,691. The outlet orifice h is adjusted by moving a slide g by means of a hand-lever i, crank arm 22, and link 23. The agitator spindle f<1> is mounted in the castiron shoes 21 at the bottom of the hopper and is driven from a roadwheel b by a chain 25 and a clutch 38, operated by a lever 39 controlled by a spring 42 and a cord 41. The distributer p is carried by the gear cases 27, 27a mounted on the shoes 21 and is driven from the spindle f<1> by a chain 35. The gear cases are linked to an arm 26 pivoted on the axis of the hand-lever i and are adjustably secured in position by a perforated bar 29.
Patent GB-260289-A (GB)
IPC: D06P5/13
Filed: 1926-10-22
Abstract: 260,289. British Celanese, Ltd.,. (Assignees of Whitehead, W.). Oct. 24, 1925, [Convention date]. Bleaching, processes and materials for.-Dyestuffs are stripped from yarns, threads, fabrics, films or other cellulosic materials, particularly those containing cellulose esters or ethers but including regenerated cellulose, by treatment with a liquid acting as or containing both a swelling agent or agents for the material and a solvent or solvents for the dye-stuff. The materials may be obtained undamaged by the stripping, and the dyes ,extracted may be employed again. The following groups of substances are suitable as solvents or swelling agents :-(1) aromatic hydrocarbons, such. as benzene, toluene, xylenes, trimethyl benzene, ethyl benzene; (2) acetone; (3) chlorderivatives of saturated and unsaturated hydrocarbons, such as tetrachlorethane, dichlorethylene, trichlorethylene, perchlorethylene; (4) alcohols, such as methyl and ethyl alcohol; (5) aqueous ammonium thiocyanate; (6) water. A mixture of water with diacetone alcohol, may be used. Successive treatments may be given with fresh liquid, and the temperature may be raised to,e.g. from 54‹ to 72‹ C. The method is particularly applicable to materials dyed. by S.R.A. methods, for example as described in Specifications 219,349. 224,925, 242,393, and 242,711, [all in Class 15 (ii), Dyeing, Processes &c. for], and to materials dyed with amino-azobenzene, p-nitrobenzene-azo-dimethylaniline, methylamino anthraquinone, 1.4- amino-oxyanthraquinone, benzene-azo-benzeneazo-monomethylaniline &c.
Patent GB-424353-A (GB)
Title: Devices for aiding propulsion in swimming
IPC: A63B31/11
Filed: 1933-09-26
Abstract: 424,353. Swimming- appliances. CORLIEU, L. M. DE, 2, Avenue Victor Hugo, St. MandÚ, Seine, France. Sept. 26, 1933, No. 26463. Convention date, April 6. [Class 77] Each of a pair of paddles adapted to be mounted on the feet has a substantially flat, flexible, resilient, non-pivoted portion extending beyond the toes substantially in alignment with the leg when the foot is in the position for performing the crawl stroke. The resilient portion is formed of a framework 1 of steel wire or flexible blades or plate of spring steel, rustless steel or celluloid, with a casing 2 of thin crepe rubber, vulcanized rubber, waterproof fabric, or cellular water-tight rubber. The covering material may be thicker on one side than on the other, to give greater resistance to flexion. Alternatively, the resilient portion may be of resilient material, the thickness of which decreases from the root towards the tip. Attached to the resilient member is a pocket 3 which fits the foot. A wedge 9 is provided to locate the resilient portion. Hand paddles for use with these foot paddles are formed of a plate 14 with a wrist-band 15 and a band 16 for the fingers. The plate 14 may be constructed on a frame of steel, rustless steel, aluminium, " Duralumin", (Registered Trade Mark), wood, cork, cellular watertight ebonite, &c.
Patent GB-390154-A (GB)
Title: Threshing machine with suction dressing
IPC: A01F12/44
Filed: 1931-09-22
Abstract: 390,154. Thrashing-machines. SCHWEDHELM, C., 239, Schwachhauser- Heerstrasse, Bremen, Germany. Sept. 22, 1931, No. 26490. [Class 58.] Grain and chaff pass from a thrashing drum a to a reciprocating dressing box e that is provided with a sieve i through which the grain passes, leaving the short straw, and a second sieve k that permits the passage of sand or dust. Any grain thrown with straw from the drum on to straw shakers c falls on to a return plate d which directs it into the box e. The grain passes without the necessity for a conveyer from the box e through a passage m into a second dressing box g rigidly connected to the first box. The passage m is diminished in effective size at or adjacent the place where it is entered by a suction nozzle h through which the remaining short straw and chaff is drawn. The degree of suction may be altered by adjusting the height of the suction nozzle above the floor of the passage. In the second dressing box the grain is subjected to the action of a blast from a blower u provided with nozzles v, the clean grain entering collecting boxes p. In a modification the second dressing box is provided with a collecting chamber from which outlet connections provided with closing flaps are fed. The inclinations of the bottom of the collecting chamber and of the outlet connections are small as the grain is shaken down by the reciprocating movement of the boxes and their associated parts. Sack supporting devices are arranged on the main frame below the outlet ftaps.