baber/WOPTO huggingface dataset:
Patent GB-1429850-A (GB)
Title: Data processing systems
IPC: G06F12/10
Filed: 1973-06-15
Abstract: 1429850 Virtual addressing INTERNATIONAL BUSINESS MACHINES CORP 15 June 1973 [21 July 1972] 28630/73 Heading G4A  Virtual addresses provided by a processor 1 (Fig. 1) for accessing a main store 6 are compared in comparator 2 with data representing the boundary in main store defining an area dedicated to storing selected programme information, e.g. the supervisor, within which virtual to real translation is not necessary, the virtual address being used to address the store when it falls within that area. As described, virtual addresses from register 4 are fed if comparison occurs via AND gate 13 to register 14 to address the store. Each virtual address is also fed to associative store 3 to cause read out of the corresponding real address, if it is stored therein, via gate 15 (inhibited when comparator 2 gives an output on lead 10) to the address register 14. If neither the comparator 2 nor the associative store 3 gives a match signal, gate 16 signals processor 1 to feed the virtual address to access segment and page tables stored in the main store and if found the real and virtual addresses are then placed in the associative store under the control of a least recently used logic circuit 20. If the page is not in the main store it is brought from, for example, disc storage and written in the main store in place of a selected page.
Patent GB-1336834-A (GB)
Title: Method of and apparatus for segregating batches of sheets from a stack thereof
IPC: B65H3/32
Filed: 1972-06-20
Abstract: 1336834 Feeding sheets SOUTHWORTH MACHINE CO 20 June 1972 [21 June 1971] 28720/72 Heading B8R Means for separating batches of sheets from the bottom of a pile 21, Figs. 5 and 8, of limp or intermixed limp and self-supporting sheets comprises a needle 45, Figs. 3, 4, 5 and 8, carried on a block 47 reciprocable by means of a cam 57 operated by an air piston 58 to move the needle into the front of the pile, whereafter a place 64 is pivoted by a further cam so as to move the needle and the front end of the lowest batch of sheets downwards to the position of Fig. 8 to form a gap 69 and allow the insertion of grippers 62, 63 to clamp the batch. After withdrawal of the needle and further downward movement of the plate 64, the grippers withdraw the batch, while the next batch 85 is retained by a surface 84 of a lever 81 and fingers 95, 96 of levers 92, 93. Leaf springs 112 on elements 108, 109 define a gap 110 for the removal of the batch, and air is emitted through slots 124, 125 into the gap 69. A part 103 on the block 47 raises the central part of the lowest sheets to compensate for any bowing.
Patent GB-632276-A (GB)
Title: Improved speed control device for electric motors
IPC: H02P7/06
Filed: 1947-10-28
Abstract: 632,276. Automatic speed control systems. GENERAL MOTORS, Ltd., BLAZEY, S. H., and HOPKINS, R. T. Oct. 28, 1947, No. 28742. [Class 38 (iv)] In an electric motor speed control device, a relay contact is in series with the motor feed and is controlled by two opposed windings, one of which is energized from the armature voltage while the other is adapted to be connected in series with the motor. As shown, the motor A is run at low speeds with switch B open and is speed regulated by the vibration of the contact arm L under the influence of coils E, I, J. Coils E, J, which-tend to open the contacts at L, oppose coil I. With L shut, the speed and therefore the voltage across A, will rise, thereby increasing the excitation of E which together with that of J counterbalances I and opens L. The armature current then passes through resistor H and coil I, E, the speed of A falls thus lowering the excitation of E and raising that of I and effecting closure of L. The motor speed rises and the cycle is repeated.
Patent GB-621400-A (GB)
Title: Improvements relating to spraying devices
IPC: E04F21/12
Filed: 1946-09-26
Abstract: 621,400. Cement guns &c. ROBERTS, Ltd., J. W., and NICHOLS, C. A. Sept. 26, 1946, No. 28828. [Class 20(ii) [Also in Group XXIX] A tubular nozzle for spraying suspensions of solids in gases has an inlet 1 of circular cross section and a straight length 4 of rectangular section at the outlet end. The inlet section merges with the rectangular section over a transforming length 2, part of which, 3, is curved to cause the solids in suspension to spread out laterally. Water and compressed air are supplied by pipes 6, 7, to a nozzle 8 to moisten the issuing suspended solids. In a modification, Fig. 5 (not shown), the tube is bent twice so that the inlet is parallel to, but offset from the outlet.
Patent GB-965605-A (GB)
Title: Device for clearing pipes,tubes,conduits and the like
IPC: B08B9/04
Filed: 1962-07-27
Abstract: 965,605. Pipe &c. clearing devices. E. L. WARD. July 25, 1963 [July 27, 1962], No. 28856/62. Heading F2N. A device for clearing the interior of pipes, tubes, conduits and the like comprises a hollow cylinder 1 having at least one end serrated and being connected by a plurality of legs 4 to an axially-positioned coupling member 5 adapted to be fitted to an operating rod 6 whereby the device can be simultaneously rotated and fed forward in an axial direction so that the serrations 2 will engage and cut through obstructions in a pipe. As shown, the cylinder has a series of triangular teeth at each end thereof and is formed with dome-shaped protuberances 12 to provide radial clearance for the operation of the serrations.
Patent GB-781830-A (GB)
Title: Improvements in or relating to separators for liquids having different specific gravities
IPC: C10G33/06
Filed: 1955-10-11
Abstract: 781,830. Purifying liquids; gravity-separation apparatus. COASTGUARD SEPARATORS, Ltd., and THOMPSON, H. A. Oct. 11, 1955 No. 28899/55. Class 46. [Also in Groups XXII and XXIX]  A mixture of two liquids of different densities, e.g. oil and water, is admitted at 21, Fig. 1, beneath a corrugated baffle plate 3A, Fig. 3, and thereafter swirls inside baffles 3 before passing upwards through an expanded-metal grid 4. Most of the oil rises past a baffle 5 into an oilcollecting dome 2 while the water and oilsurrounded water droplets pass along a dividing plate 19, some of the mixture passing between baffle plates 20 which have bars (not shown) or angles E, Fig. 1, welded to them to provide Venturi outlets which break up the oil-water droplets. The water passes beneath the plate 19 and past further baffle plates 20A to an outlet pipe 22 extending above the tank 1. Heating coils or immersion heaters 30, 31 are provided in the dome 22 and below the plate 19, Fig. 1, respectively. When a prescribed quantity of oil has collected in the dome a lever 12, Fig. 8, tilts, and in so tilting rotates through a small angle a spindle 17a connected to its axle and thus through arm 17 and pin 18 shifts a pilot-valve piston (not shown) in a fluidpressure servomotor unit B (see Groups XXII and XXIX). The relay valve controlled by the pilot valve thereupon admits steam, air or hydraulic fluid to the underside and exhausts it from the upper side of a double-acting piston 26, Fig. 1, connected to a lift valve 28 controlling an oil outlet 23A. When sufficient oil has been discharged to restore the lever 12 the valve 28 is closed by the servomotor unit B. The closing pressure above the piston 26 may alternatively be provided by a spring or by water supplied through a connection from the water outlet pipe 22. To provide a sufficient length of oil-discharge pipe 23 to ensure an oil seal, the pipe may be inclined where space is limited. Alternatively the pipe may be constructed as a number of spirals arranged in parallel which as a further alternative may be constructed as a casting, Fig. 15. Alternatively a cylinder may be provided internally with welded steel plates providing parallel spiral paths. Where steam, air or hydraulic power cannot be provided the oil and water discharge valves may be opened and closed by electric motors or solenoids. The motors may be operated by control switches, actuated by the displacement cylinder assembly, instead of the piston control valve.
Patent GB-487937-A (GB)
Title: Improvements in or relating to screw propellers
IPC: B64C11/04
Filed: 1936-10-24
Abstract: 487,937. Screw propellers. COATS, J. S., and TROTMAN, E. W. Oct. 24, 1936, Nos. 28967 and 30073. [Class 114] A variable-pitch propeller has hollow blades each connected with the boss by a link which at its ends has pivoting axes oblique to the propeller axis, and each blade is extended beyond the axis into the opposite blade to provide a balance. A pivot 12 at the root of the hollow blade 11 is set obliquely and a link 13 connects it with an oblique pin 14 on the shaft 15, whilst another link 18 with a universal joint 20 connects the pivot 12 with a slide block 16 on an extension 17 of the shaft. As rotational speeds increase the blades tend to move out and at the same time alter in pitch due to the oblique setting of the pivots. The blades may be positively set by controlling the slider 16. Each blade is provided with an extension 21 which straddles the shaft and within the opposite blade has a fitting 24 connected by a chain 22 with a point 23 on that blade. The chain is fully extended when the blades are in their innermost position and the centrifugal force thereon is taken by the blade to which it is attached directly. As speed increases the blades move out and links of the chain pile up step-by-step in the part 24 adding their effect to the one blade and deducting from the other. Specification 469,124 is referred to.
Patent GB-385383-A (GB)
Title: Improvements in apparatus for washing and grading gravel and other substances
IPC: B03B5/56
Filed: 1931-10-19
Abstract: 385,383. Washing granular materials. BROAD BANK, W. A. J., Newtown Garage, Ringwood Road, Parkstone, Dorset. Oct. 19, 1931, No. 29043. [Class 82 (ii).] Apparatus for washing and grading gravel or other granular material comprises an inclined rotary tube 1 carried by a solid shaft 3 and having a conveying spiral 5, the wall of the tube at the upper end being replaced by a series of screens of increasing mesh. In the form shown three screens 6 are shown, discharging into separate hoppers formed by partitions 7. Gravel is fed to the lower end of the tube and water through a pipe 8 entering at the upper end. The outside of the screens 6 is washed by water from a perforated pipe 9.
Patent GB-1514044-A (GB)
Title: Tapped plug
IPC: F16B13/06
Filed: 1976-07-13
Abstract: 1514044 Screw sockets R BRENDLE 13 July 1976 [16 July 1975] 29138/76 Heading F2H An expansible screw socket 1 formed from a single piece of sheet metal comprises a screwthreaded nut portion 3 connected by several bowed legs 2 to a sleeve having radially outwardly extending end flanges 4, the sleeve and flanges forming a head portion, each leg 2 having at least two weakened zones 5 disposed at regular intervals therealong to form points at which the legs can be bent readily. The legs are stiffened between the weakened zones 5 by embossed portions 7. The series of weakened zones 5 is said to facilitate the blind fastening of the socket in panels of different thicknesses.
Patent GB-162704-A (GB)
Title: Improvements in the construction of two-stroke internal combustion engines
IPC: F02B25/00
Filed: 1919-11-24
Abstract: 162,704. Marks, E. C. R., (Illinois Motor Co.). Nov. 24, 1919. Two-stroke -cycle engines; cylinders, pipes for. -The working end 16 and the compression end 17 of the cylinder intercommunicate through a check valve 19 and a removable manifold 31 which contains the intake valve 34. The piston has two rows of elongated ports 42, 43 adapted to register with ports 21, 23 connected by a passage 25 opening into the manifold. The arrangement is such that, substantially throughout the power stroke, the manifold and compression chamber are in free communication and at the end of the stroke when the exhaust ports 20 are uncovered by the piston any charge remaining in the manifold and chamber can pass into the cylinder through the ports 21. The manifold has a central enlargement 32 with vertical branches 36, 38 and carries the valve 19.
Patent GB-814442-A (GB)
Title: Improvements in or relating to apparatus for operating an electric arc lamp
IPC: H05B31/00
Filed: 1957-09-19
Abstract: 814,442. Automatic electric arc control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Sept. 19, 1957 [Jan. 10, 1957], No. 29487/57. Class 38 (4). In arc lamp control apparatus wherein a polarized relay controls a reversible motor driving the electrodes, the relay is operated by the voltage difference between the arc voltage and a reference voltage. The arc between electrodes 24, 30 is connected to the rectified supply at terminals 14, 16 through a regulating resistor 28. Also connected across these terminals is potentiometer 72, 74, 76, the variable tapping on 72 determining the reference voltage for optimum arc length. This reference voltage point is connected through polarized relay 50 coil 66 to fixed electrode 30 and the P.D. across this coil, representing the arc voltage error, energizes the armature 48 to switch on electrode feed motor 38 to run in a corrective direction.
Patent GB-318212-A (GB)
Title: Flexible casing for chains
IPC: F16G13/02
Filed: 1928-10-12
Abstract: 318,212. Soc. Commerciale des. Produits Brampton (formerly Soc. Brampton). Aug. 31, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Guards.-The driving chains of cycles, motor vehicles, machinery, &c. are protected from dust &c. by readily removable guards which are made of flexible material, such as water-proofed fabric, rubber &c., and are adapted to be fixed to the chain by their own elasticity, or by spring fastening-members. As shown in Figs. 1 and 2, a flexible cover C of channel section is provided with U-shaped elastic fastening-members A, A<1> having their lower ends turned inwards as at i, so as to grip the side plates of the chain links. Lubricant may be retained by horizontal flanges on the lower part of the cover.
Patent GB-823935-A (GB)
Title: Improvements in and relating to lever devices for use in raising and transporting rocks and the like
IPC: E02F3/40
Filed: 1955-10-17
Abstract: 823,935. Earth-moving apparatus. WALLS, P. J. Oct. 17, 1955 [Dec. 16, 1954; Oct. 14, 1955], No. 29508/55. Class 68(1) [Also in Group XXX] A device for removing tree stumps and rocks comprises a lever 8, Fig. 1, which is pivoted at 6 on a hydraulically luffed boom 1 mounted on a tractor 3 and carries a fulcrum pad 10 about which the lever may be tilted by a winch 14. In removing a rock 20, the lever 8 is tilted by means of rams 4 and cable 13 so that the toe 9 digs into the ground and the fulcrum pad 10 rests on the ground, and on tensioning cable 13, the lever 8 is tilted about pad 10 into position A. For transport purposes, the lever 8 is tilted to position B in which it rests on a spring controlled bar 15. In a modification. Fig. 6 (not shown) the free end of the boom is supported by a pair of wheels, and the lever 8 is connected to the boom through pivoted links. In a further modification, Figs. 8, 9 (not shown), lever 8 is raised to a position above the boom for stacking purposes. Lever 8 may. be provided with a scoop (Figs. 3 and 4, not shown).
Patent GB-1426084-A (GB)
Title: Removal of liquid from a travelling fibrous web
IPC: D21F3/02
Filed: 1973-06-21
Abstract: 1426084 Drying webs BELOIT CORP 21 June 1973 [7 Aug 1972] 29516/73 Heading F4G A press mechanism for removing liquid from a travelling fibrous web W comprises an extended press nip through which the web W passes and a means for absorbing moisture squeezed from the web and for retarding the flow of moisture back to the web on the web passing from the nip. The means comprises a thin porous sheet S contiguous with the web W in the nip and backed by a porous felt F. The sheet S may be of a porous stainless steel or of a plastics material. Alternatively the means may comprise a felt having a "flowresistance" property. As shown the nip is formed between a pair of belts 10, 11 and extends from a first pair of rolls 12, 14 to a second pair of rolls 13, 15. Intermediate the pairs of rolls a pressure chamber 18, 19 is formed between a pair of bearings 16, 17, the web inlet to and outlet from the chamber being sealed as by sliding members made of Teflon (Registered Trade Mark). The extended nip may formed by pressing the web against an arc of a roll by a belt or by the felt itself (Figs. 3, to 6, not shown). Values of felt permeability and porosity of the sheet S are given in the Specification.
Patent GB-835086-A (GB)
Title: Improvements in or relating to electric cells
IPC: G04C10/00
Filed: 1957-09-19
Abstract: Silver peroxide is made by first precipitating silver oxide from a solution of a silver salt by means of caustic alkali, and then subjecting the oxide to the action of an oxidizing agent, e.g. sodium hypochlorite or sodium persulphate.  In an example, a solution of silver nitrate is added to a solution containing sodium hydroxide and sodium hypochlorite.  The precipitate is removed and treated a second time with the hypochlorite.  The black powder so obtained is collected in a vacuum filter and dried.
Patent GB-649640-A (GB)
Title: An oil pressure operated electric switch for motor vehicles and internal combustion engines
IPC: H01H35/34
Filed: 1949-11-18
Abstract: 649,640. Devices for indicating abnormal working conditions. WAYMAN, S. C. Nov. 18, 1949. No. 29599. [Class 7 (ii] [Also in Group XXXVII] A device embodying an electric switch and intended to be inserted between an internal combustion engine and a pump supplying lubricating oil thereto, comprises a chamber 4 connected to the pump at 1 and having an outlet 6 for completing the oil circulating system, the outlet normally being closed by a ball 8 which is displaceable by oil pressure within the chamber 4, and a switch 14 operated by a diaphragm 15 at a pressure lower than that necessary to lift the ball 8, so that the switch-closing pressure may be created by turning the engine by hand. The lift of the ball is limited by an adjustable stop 11. Specification 515,461, [Group XXXVII], is referred to.
Patent GB-536493-A (GB)
Title: Improvements in or relating to urea-formaldehyde adhesives
IPC: C09J161/24
Filed: 1939-11-09
Abstract: 536,493. Urea-formaldehyde adhesives. AERO RESEARCH, Ltd., and RAYNER, C. A. A. Nov. 9, 1939, No. 29772. [Class 2 (iii)] An adhesive composition comprises a condensation product of formaldehyde with urea, thio-urea or a mixture thereof, and formic acid in excess of 2 per cent. by weight. Filling material may be incorporated, and specified fillers are starch, calcium sulphate, Tripoli silica powder, and cellulosic materials such as wood flour and paper pulp. The condensation product may be obtained bv boiling 1 mol. of urea with 2-2¢ mols. of formaldehyde, in aqueous solution, and the formic acid should be incorporated immediately before applying the adhesive mixture. A retarding agent, such as hexamine or ammonia, may be added to the formic acid. According to the Provisional Specification, a small proportion of ammonium chloride may be incorporated with the formic acid.
Patent GB-222001-A (GB)
Title: Improvements in the dyeing of cellulose acetate products
IPC: C09B51/00
Filed: 1923-11-27
Abstract: Dinitrodiphenylamine compounds containing no sulpho groups are prepared by condensing 2 : 4-dinitrochlorbenzene with aromatic amines; the following products are specified:-2 : 4-dinitrodiphenylamine and its 21- or 41-hydroxy, 21- or 41-carboxy, 41-amino, 41-acetylamino, and N-methyl derivatives; an example is given of the preparation of 2 : 4-dinitrodiphenylamine; the products are employed for dyeing cellulose acetate goods.ALSO:Cellulose acetate goods are dyed by means of 2 : 4-dinitrodiphenylamine compounds containing no sulpho group.  The following compounds are specified as suitable:-2 : 4-dinitrodiphenylamine and its 21- or 41-hydroxy, 21 - or 41-carboxy, 41-amino, 41-acetylamino, and N-methyl derivatives.  These are prepared by condensing 2 : 4-dinitrochlorbenzene with the corresponding amines; an example is given of the preparation of 2 : 4-dinitrodiphenylamine.  The goods are dyed in an aqueous solution or suspension of the diphenylamine compound at about p  75 DEG  C.; Turkey-red oil, soap, ammonia, &c. may be added to the dye-bath.
Patent GB-896897-A (GB)
Title: Improvements in machines for cutting the edges of lawns or grass verges
Inventor: LITCHFIELD HAROLD EDWARD
IPC: F27B5/04
Filed: 1959-09-02
Abstract: 896,897. Edge-trimmers. BROADBENT & CO. (ROCHDALE) Ltd. Oct. 24, 1960 [Sept. 2, 1959], No. 29877/59. Class 6(2). An edge-trimmer comprises a hand-propelled roller A, driving through bevel gearing B, B<SP>1</SP> a rotary cylindrical cutter C, the spindle b of which is mounted at its upper end in a bearing in the frame A<SP>1</SP> supporting the roller, and at its lower end in a bearing carried by a bracket B<SP>2</SP> fixed to the frame A<SP>1</SP>. The bracket B<SP>2</SP> also serves to support an adjustable stationary blade D with which the cutter C co-operates. The device may further comprise a guide plate D<SP>1</SP> and a grass box for collecting the clippings.
Patent GB-643010-A (GB)
Title: Ladder control device
IPC: E06C5/34
Filed: 1946-10-07
Abstract: 643,010. Fire-escapes. COMMANDITAIRE VENNOOTSCHAP FABRIEK VOOR AUTO-EN MACHINEBOUW REINIGINGS-EN BRANDWEER-MATERIEEL, VOORHEEN J. GEESINK & ZONEN., and SCHIERECK, W. Oct. 7, 1946, No. 29879. [Class 47 (i)] In a hydraulically-operated fire ladder, means are provided to prevent excessive extension of the ladder at any elevation and excessive lowering thereof at any extension. In one form, a valve 17 operated by a hand lever 33 and provided with supply and exhaust ducts 21, 22 co-operates with a rotatable sleeve 18 coupled to the ladder whereby elevation and lowering are effected by the provision of passages 25, 26 and 29, 30 communicating with the ladder operating gear. A similar valve 19 operated by a hand lever 36 effects the extension and collapsing of the ladder. Movement of the levers 33, 36 is limited by abutment members 41, 44 movable therewith and co-operating with abutment members 43, 42 movable with the sleeves 20, 18 respectively. Pointers 34, 37 show the setting of the hand levers, and pointers 39, 40 the actual condition of the ladder. An axially movable rod 54 having arms 52, 53 engaging sleeves 46, 47 carrying the abutments 41, 42 is controlled manually or by a pendulum to provide for an adjustment of the zero elevation position. In a modification, the abutments 41, 43 are secured to the hand levers 33, 36 to limit their relative movement, and the abutments 42, 44 are replaced by an electric arrangement which cuts off the hydraulic pressure when the limits of movement are reached. The indicating pointers are replaced by electric lamps.
Patent GB-173124-A (GB)
Title: Improvements in and relating to artificial legs
IPC: A61F2/64
Filed: 1920-10-22
Abstract: 173,124. Kenney, N. J. H., and Kenney Limb Co., Ltd. Oct. 22, 1920. Limbs, artificial. -A locking-device for kneejoints, for retaining the upper and lower leg members in alignment when the feet are taking the weight of the body and which is automatically rendered operative when the wearer rises from the sitting position, comprises a spring-urged stop 5 mounted in a bracket 7 in the upper leg member 8, which coacts with a vertical member 3 mounted on the pivot 4 and attached to the lower leg member by brackets 2. To enable the wearer to sit down, the stop is raised by a wire 10 attached to a lever 11 pivoted inside the upper leg member and manually adjustable from the exterior thereof, the lever being placed in a notch 16 for this purpose. When the wearer sits down, a cam 17 on the member 3 raises the stop 5 and lever 11 sufficiently to enable the lever 11 to clear the notch 16, whereupon the lever is pressed sideways by a spring (not shown) to the top of the slot 14, as shown in Fig. 4, so that when the wearer resumes the standing position the stop 5 is enabled automatically to move into engagement with the member 3 without any further adjustment of the lever 11.