baber/WOPTO huggingface dataset:
Patent GB-921086-A (GB)
Title: Improvements in or relating to extrusion lubricants and the extrusion of metals
IPC: B21C23/32
Filed: 1960-03-07
Abstract: A lubricant for use in the extrusion of metal tubes comprises a suspension of powdered glass in a volatile medium which boils below the extrusion temperature and which is inept to the metal to be extruded and to the metal of the extrusion press.  The lubricant may consist of powdered window glass suspended in water, alcohol or mixtures containing alcohol or other volatile liquids. Crushed clay or gum tragacanth and/or sodium silicate may be added.  Specific examples are given of lubricant compositions. Specification 607,285 is referred to.
Patent GB-180461-A (GB)
Title: Improvements in liquid fuel supply systems for steam boilers or the like
IPC: F23D11/12
Filed: 1921-03-14
Abstract: 180,461. Clayton &. Shuttleworth, Ltd., Robson, P. W., Wimbush, H. L., and Jones, E. W. March 14, 1921. Liquid-fuel furnaces.-In a liquidfuel supply system for steam-boiler furnaces of the kind in which the fuel supply is regulated in accordance with the rate of steam generation, comprising a substantially vertical fuel-supply pipe 3 below the upper open end of which the liquid fuel is automatically maintained at a constant level and a jet 5 disposed to direct steam above the fuel-supply pipe to atomize the fuel and mix it with air entering the tube 1, the steam jet is connected directly to the valve chest of an engine so that steam supplied to the jet is varied in accordance with the demand for steam from the boiler. The steam supply to the jet may be controlled by a separate valve which is operated in synchronism with the main valve of the engine or cut-off valve of the boiler. A by-pass pipe may convey steam from the boiler, or from some other source of steam supply for starting-up the boiler, to the jet 5, when steam is not being supplied to the engine, and such by-pass may be utilized for the supply of air to the jet when steam is not available.
Patent GB-1442273-A (GB)
Title: Method and device for reading characters preferably digits
IPC: G06V30/12
Filed: 1974-02-21
Abstract: 1442273 Character recognition systems DE STAAT DER NEDERLANDEN TE DEZEN VERTEGENWOORDIGD DOOR DE DIRECTEUR - GENERAAL DER POSTERIJEN TELEGRAFIE EN TELEFONIE 21 Feb 1974 [21 Feb 1973] 8028/74 Heading G4R Data representing a character handwritten in a frame on a document is separated from data representing any parts of a character, written in an adjoining frame, which overlap into the frame. The character parts in a region adjoining or encompassing the boundary between the frames is examined and these parts are retained or erased as appropriate. As indicated in Fig. 2 a 48 x16 bit region is examined. Serial data representing this region is passed to a matrix store. The stored data is then read-out non-destructively to a recirculating shift register which develops a signal representing the horizontal or vertical projection, as appropriate, of the character parts in the region. In the case of the left hand region shown in Fig. 2 the left horizontal projection results in vertical shadows 01, 02. For each portion of the region causing a shadow a logic circuit determines whether or not a character part lies in columns 0, 8 and 15 of the region, and develops a corresponding 3-bit signal. Fig. 4 shows examples of character portions which result in the eight signals 000 to 111. Dependent upon the signal the signals representing the character parts in the shadow portion are erased or retained. For example, character parts such as at a (000) or g (110) are erased from the store, and parts such as at b (001) are retained, whereas a part such as at h (111) indicates that the characters are not separable. In addition the number of shadows is counted. If this number exceeds 3, for example, the characters are considered inseparable. The data now remaining in the store is added to a further store containing data representing the character in the frame. The process is repeated from a region on each side of the frame and the data in the further store then passed to a recognition unit.
Patent GB-906518-A (GB)
Title: Process for the low-distortion hardening of components
IPC: C23C8/80
Filed: 1960-03-07
Abstract: Parts of a component, e.g. the teeth of a gear-wheel, are hardened by soft nitriding followed by induction hardening.  The teeth may be preliminarily case hardened with carbon.  The nitriding may be carried out in a bath for 1-3 hours or in ammonia gas for up to 10 hours at 500-600 DEG  C.  It is stated that the components so treated are resistant to distortion when in use.
Patent GB-564945-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J13/32
Filed: 1943-05-21
Abstract: 564,945. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. May 21, 1943, No. 8115. Convention date, May 22, 1942. [Class 39 (i)] A metal enclosed liquid electrode discharge apparatus includes a rotationally symetrical metal condensation chamber 11, and a second metallic annular chamber 18 of larger diameter secured thereto, the latter being divided by partitions into a number of chambers each containing an anode 25. The anodes are thus offset from the straight line path between the cathode 10 and the condensation chamber 11. The cathode is contained in a cup-like structure welded to plate 19 and the remainder of the apparatus is formed by welding flanged plates into cylindrical metal portions of the appropriate size. The chamber 11 may be a frustrum of a circular cone instead of the cylinder shown. Metal baffles 46 may be welded between plates 15 and 19 to screen the outlets from the anode chambers and prevent discharges between anodes. An immersion starting electrode 50 is provided and also auxiliary anodes 53 and 54. Mercury, cadmium, or bismuth are proposed as the cathode material.
Patent GB-1175485-A (GB)
Title: Insert for Assembly in a Bore or Recess in a Workpiece
IPC: F16B37/04
Filed: 1968-02-20
Abstract: 1,175,485. Screw sockets. UNITED-CARR Inc. 20 Feb., 1968 [15 March, 1967], No. 8193/68. Heading F2H. An insert adapted to be fixedly inserted into a bore 16 in a wooden workpiece comprises a hollow tubular shank 2 with a radially extending flange 3 and a plurality of fins 5, each of the fins having a sharp leading edge 8 facing away from the flange and a trailing edge which merges with the trailing edge of an adjacent fin at the apex 12 of a V-shaped flute 13, the extended diameter of the flute portion being less than the shank diameter between the apices of the flute and the flange. The insert is made in metal or plastics material. In the embodiments described the shank is internally screw-threaded and, to provide increased resistance to rotation, the flange may be formed with a plurality of prongs spaced from the shank and extending towards the fins, Fig. 6 (not shown), or longitudinal lugs may be formed on opposite sides of the shank adjacent the flange, Figs. 7-10 (not shown). Narrow gaps between portions of leading edges (which intersect in a sharp point 8) provide for displaced material to be clamped between opposed surfaces of co-operating pairs of fins, e.g. 6, 7; while more is jammed in shallow pockets 14 at the apex of each flute 13. Wedge shaped recesses between pairs of fins have a similar function in the embodiment of Figs. 8, 10.
Patent GB-176258-A (GB)
Title: Improved furnace grate
IPC: F23H13/00
Filed: 1921-03-16
Abstract: 176,258. Zach, G. March 16, 1921. Grates.-In a grate having fire-bars of V, W, U, semicircular, or other cross-section and composed of two or more sections, the sections 1, 1<1> are supported on U-shaped end bearers 3, the inner flanges 5 of which are notched to receive the bar sections, and intermediate U-shaped bearers, such as 4, both flanges 7, 7<1> of which are also notched to receive the fire-bars. The bearers 4 are provided with supplementary flanges 8, 8<1> which engage slots 9 in the bar sections. The fire-bars may be galvanized to prevent oxidation and filled with ashes to prevent clinkers from adhering to the bars.
Patent GB-657880-A (GB)
Title: Improvements in or relating to clothes pegs
IPC: D06F55/00
Filed: 1949-03-26
Abstract: 657,880. Spring clips. OLSEN, J. M. March 26, 1949, No. 8270. [Class 44] A clothes peg comprising two parts 1, 2, which are provided with line - receiving grooves 3, 4, is held together by a U-shaped leaf spring 8, the two legs 11, 12 of which are substantially the same length as, and bear against, two extensions 9, 10 of the parts 1, 2. The extensions 9, 10, are separated from the main portions of the parts 1, 2, by slits 6, 7, the spring legs 11, 12, being so shaped that each presses against the outer wall of the respective slit 6, 7, only at the top and bottom thereof and against the inner wall only at one intermediate point. The spring portion 10 connecting the legs 11, 12, is slightly curved with its convex side towards and bearing against the extensions 9, 10. The ends of legs 11, 12, may bite into the outer walls of the slots 6, 7. The spring 8 is the same width as the parts 1, 2.
Patent GB-592987-A (GB)
Title: Improvements in or relating to the surface treatment of laminations of ferrous magnetic material
IPC: C23C22/74
Filed: 1945-04-04
Abstract: In the treatment of ferrous magnetic sheet in order to produce thereon a surface film which is insulating and at the same time heat resistant to subsequent strain annealing, the sheet is treated with an aqueous solution containing from 5-60 per cent phosphoric acid and from 2-5 per cent magnesia dissolved therein, and heat-treated to a temperature of 700-900 DEG C. to cause a reaction of the phosphoric acid with the ferrous metal to give an insulating film of phosphate embodying refractory particles of p  the precipitated magnesia.  The amount of magnesia employed is greatest for high temperature of subsequent strain annealing, and a typically suitable solution contains 30 per cent phosphoric acid and 5 per cent MgO.  The heat treatment of the surface film takes place in a neutral or slightly reducing atmosphere of, e.g. 10-20 per cent hydrogen and the balance nitrogen.  The Specification as open to inspection under Sect. 91 also describes the application of phosphoric acid and at least one finely divided refractory material of the group magnesia, silica, mica, talc and alumina, the refractory material being applied as a suspension in an aqueous phosphoric acid solution, or being applied after treatment of the surface with the phosphoric acid solution, separating, and either with or without a subsequent heat-treatment. This subject-matter does not appear in the Specification as accepted.
Patent GB-1378358-A (GB)
Title: Drilling buttons
IPC: B23P11/00
Filed: 1973-02-20
Abstract: 1378358 Percussive drills SMITH-WILLISTON Inc 20 Feb 1973 [8 March 1972] 8377/73 Heading B4C [Also in Division E1] A tapered button 42 is fixed in a bore in a drilling head by forcing a sleeve 44 on to a die 80 to produce an internal sleeve profile corresponding generally to that of the button 42, engaging the sleeve 44 over the button 42 and inserting them into the bore, and forcing the sleeve 44 downwardly on the button 42 so that the sleeve 44 expands to hold the button 42 and bore in engagement. The sleeve 44 may be initially engaged over the button at a force of about 10,000 pounds, and subsequently expanded by a force of about 24,000 pounds. The button is preferably of sintered carbide and the sleeve 44 of heat treated low alloy steel. Worn buttons may be extracted by cutting away, Fig. 2G (not shown), or by spark erosion of the sleeve 44, and the button may taper inwardly from its working end, Fig. 4 (not shown).
Patent GB-128530-A (GB)
Title: Improvements in Sewing Machine Needles.
Inventor: KENDIG WITMER JOHN
IPC: D05B85/00
Filed: 1919-04-03
Abstract: 128,530. Kendig, W. J. April 3, 1919. Sewing-machine needles. -A hollow needle is formed by rolling into approximately cylindrical form a sheet-metal blank. The thread channel passes frcm a tongue 2, between the overlapping edges 7, 8 of the metal to an eye formed by a recess cut in one of the edges of the blank.
Patent GB-1195457-A (GB)
Title: Method of, and Apparatus for, Treating the Surface of Hot Rolled Stock in a Rolling Mill
Inventor: PROPERZI ILARIO
IPC: B21B1/18
Filed: 1968-02-21
Abstract: 1,195,457. Cleaning rods. I. PROPERZI. 21 Feb., 1968 [5 June, 1967], No. 8475/68. Heading F2N. [Also in Division B3] During hot rolling of rod material in a continuous mill, the surface layer of the material is removed by scrapers located between adjacent mill stands. Each scraper includes flexible radial blades 25 which are carried in stacked rings 24. Lubricating and cooling fluid is able to pass through gaps 31 located between each blade and its supporting ring. The fluid can be cleaned of scraped debris and recycled. The rod material, after being scraped on cell of its surfaces, is rolled in a final stand to circular cross-section and is cooled in an axially extending tube to a temperature below which active reoxydation of the material in air takes place.
Patent GB-928812-A (GB)
Title: Process for the production of cyclododecatri-1,5,9-enes
IPC: C07C2/46
Filed: 1960-03-10
Abstract: Cyclododecatri-1,5,9,-enes and other cycloolefins are obtained by the treatment of butadiene, isoprene or piperylene with a titanium halide and an alkyl aluminium halide at up to 150 DEG C. in the presence of a sulphoxide, amine oxide, or N-ether of a ketoxime, or in the presence of a small quantity of water, viz. not more than 3 mols. per mol. of aluminium.  Specified are dimethyl and dibenzyl sulphoxides, triethylamine oxide, dimethylaniline oxide and the N-cyclohexyl ether of dipropylketoxime in amounts of 0,1-20 mol. per cent. Specification 849,236 also is referred to.
Patent GB-1181718-A (GB)
Title: Transistorized Switching Apparatus
IPC: H03K17/10
Filed: 1967-02-22
Abstract: 1,181,718. Transistor switching circuits. RANK XEROX Ltd. 22 Feb., 1967 [28 Feb., 1966], No. 8587/67. Heading H3T. A switching circuit comprising a switching transistor Q1 and two switched transistors Q2, Q3 with their emitter-collector paths connected in series, is provided with protective means R 1 , R 2 , R 3 , R 4  for ensuring equal steady state operating voltages, and further protective means C1, C2, C3 for ensuring safe transient voltage levels across the transistors. The necessary relationships between the time constants of the protective circuits and the load circuit time constant R L C L  are derived.
Patent GB-250243-A (GB)
Title: Improvements in or relating to current motors
IPC: F03B17/06
Filed: 1926-03-31
Abstract: 250,243. Bandelj, V. March 31, 1925, [Convention date]. Current motors. - A current motor driven by water or air comprises a series of hinged vanes 6<a> - - 6f carried by curved arms 4 supported by discs 2 which are secured to a vertical or horizontal shaft 1. A deflecting screen 7 may be provided. The vanes are curved at their tips, and are held in the operative position by brackets 8 engaging the arms 4. Used as a windmotor, the device may drive a ship's propeller. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification with fixed vanes secured to the arms at an inclination of 120 degrees. This subject-matter does not appear in the Specification as accepted.
Patent GB-671758-A (GB)
Title: Improvements in or relating to broaching machines
IPC: B23Q15/00
Filed: 1950-04-06
Abstract: 671,758. Electrically-released switches. LAPOINTE MACHINE TOOL CO., Ltd. (Lapointe Machine Tool Co.) April 6, 1950. No. 8745/50. Class 38 (v). [Also in Group XXII] A switch is closed by depressing a spring-influenced knob 61 which also projects a plunger 63 into a solenoid C1 which is energized to retain the switch, closed. after the knob is released. The solenoid is de-energized, to open the switch, when another switch in the circuit is opened.
Patent GB-1519155-A (GB)
Title: Apparatus for constructing tunnels
IPC: E21D9/08
Filed: 1975-07-02
Abstract: 1519155 Tunnelling apparatus GEWERKSCHAFT EISENHUTTE WESTFALIA and HOCHTIEF AG FUR HOCH UND TIEFBAUTEN 2 July 1975 [23 Dec 1974] 08787/78 Divided out of 1519154 Heading E1F In tunnelling apparatus having a drive shield composed of elongate members 10 mounted for longitudinal displacement on a frame 13, a drifting floor cutter 18 is longitudinally displaceable relative to the frame 13 and is pivotable about a vertical axis to steer the drive shield.
Patent GB-675619-A (GB)
Title: Improved means for discharging loads from motor trucks and the like
Inventor: TOPP HEREWARD JOSEPH BETHERIDG
IPC: B60P1/38
Filed: 1950-04-11
Abstract: 675,619. Unloading vehicles. MUSGROVE, F. E. April 11, 1950. No. 8841/50. Class 78 (iv). Loads such as lime and manure are discharged from a motor truck bv a flexible false bottom or mat which is drawn along the bottom of the truck by a winding drum at the tail end and is formed with openings through which the material passes either directly, or through a distributor, to the ground. The mat 3, preferably of wire mesh, passes over the top of a hopper 2 and is wound on a drum 4 mounted beyond the end of the truck bottom and driven either manually or from the running wheel 8. In the latter case the drum is connected by chain- and-sprocket mechanism 12, 13, 14 to a shaft carrying a ratchet wheel 11 which is engaged by pawls 10. These pawls are pivoted to a swinging lever 9 on each side of its fulcrum 9a. The lever 9 is rocked by a connecting rod 7 attached to a crank pin 7a on the wheel. The rate of winding can be varied by moving the pivots of the pawls in the lever 9. The pawls are disengaged to permit unwinding of the mat by turning a member 42 below the lower pawl to raise it. This movement brings a projection 43 on the lower pawl into contact with the upper pawl to raise it. The position of the pin 7a in a slot 15a in a bracket 15 on the wheel is adjusted to coincide with the axis of the wheel when it is desired to render the gearing inoperative during the travel of the truck. A known form of distributer such as a ribbed roller or sliding plate is located in the outlet of the hopper. When a sliding plate 13 is used, it is actuated through connecting rods 19 by swinging levers 26 linked to the levers 9. When too much material is being delivered by the mat, the hinged tail-board 20 swings outwards through the link 21, lever 22 and lifting rod 23 disengages the pawls 10. This device can be set to come into operation at any desired inclination of the tail-board. The tailboard may be replaced by a series of vertical cutters carried by a pivoted frame which is given also a reciprocatory movement across the truck. The cutters can be replaced by chains. In a modification, a rotary brush is mounted at the tail end of the truck above the mat. The free end of the mat is connected to a crosswall 5 provided with a projection 40 which, when the mat reaches a predetermined position, engages a lever and lifts the rod 23 to disconnect the drive.
Patent GB-1217351-A (GB)
Title: Process for dyeing synthetic copolymer materials
IPC: D06P3/00
Filed: 1968-02-23
Abstract: 1,217,351. Process for dyeing copolymers. FARBWERKE HOECHST A.G. 23 Feb., 1968 [28 Feb., 1967], No. 8847/68. Heading C3P. [Also in Division D1] A process for dyeing synthetic copolymer materials in fast shades comprises treating the material at 90-120 C. and at a pH of 5 to 10 with an aqueous solution or dispersion of a dyestuff which contains an acidic hydrogen atom, which is capable of being split off, linked to a N or O atom, said copolymer comprising (a) units of one or more vinyl or vinylidene monomers or maleic acid C 1 -C 4 -alkyl ester monomers, which monomers are free from groups capable of reacting with said dyestuff, and (b) 0À1-5À0 mol. per cent, with reference to units (a), of units of a monomer of the formula wherein R 1  and R 2  each represents H or C 1 -C 4 - alkyl and R 3  represents H or -CO-OC n H 2n+1  (where n is 1-4) or wherein R 1  and R 3  may together represent a -CO- bridge member to form a maleimide ring, Ph represents a phenylene group optionally substituted by alkoxy or halogen, A represents -NR 1 -SO 2 -CH 2 CH 2 - or -SO 2 -CH 2 CH 2 - in m- or p-position to the indicated amide linkage (R 1  being as defined above and the two R 1  groups being the same or different), and X represents -O-SO 3 Me<SP>1</SP>, -O-CO-CH 3  or -[N(CH 3 ) 3 ]<SP>+</SP>ywhere Me<SP>1</SP> is ammonium or an alkali metal and yis an anion. Units (a) specified are those of acrylonitrile, vinylidene cyanide, styrene, C 1 -C 4 -alkyl esters of acrylic or methacrylic acid, vinyl acetate, butyrate or pivalate, vinyl or vinylidene chloride, and C 1 -C 4 -alkyl maleates. In examples the copolymers are dyed while in the form of powders or threads.
Patent GB-980946-A (GB)
Title: Improvements in and relating to direct current vacuum switches
Inventor: WATSON ALAN
IPC: H01H33/66
Filed: 1961-03-10
Abstract: 980,946. Vacuum switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 30, 1962 [March 10, 1961], No. 8854/61. Heading H2B. A plurality of blind radial holes 3 (Fig. 1) or an annular channel 6 (Fig. 2) provided at the base of a recess 2 in the negative electrode 1 of a D.C. vacuum switch assists the extinction of arcing which occurs when a projection 5 on the positive electrode 4 is withdrawn from the recess 2 on separation of the electrodes. In Fig. 1 the arc roots are impelled into the holes 3 by mutual repulsion. In Fig. 2 this effect is augmented by a magnetic field between permanent or electromagnetic pole pieces 7 and 8 embedded in non-ferromagnetic end portions of the electrodes 1 and 4.
Patent GB-287851-A (GB)
Title: An improved appliance for bending rails and like purposes
IPC: B21D7/08
Filed: 1928-03-23
Abstract: 287,851. Waskonig, W., and Bochumer Eisenh³tte Keintzmann & Co. Ges., (Assignees of Bochumer Eisenh³tte-Fahrendeller H³tte Heintzmann & Dreyer). March 26, 1927, [Convention date]. Angular bending. - Rails are bent laterally between three rolls b, c, f, the axles of the rolls being extended to hold other rolls b , c<1>, f<1> between which bending pressure is applied on the flanges. Tubes may also be bent. The rolls b, c are each partly housed within a shell d fixed to the base to give lateral support relieving the axles c. The roll axles have toothed wheels k on their lower ends and are rotated by the hand-rotated pinion n.