baber/WOPTO huggingface dataset:
Patent GB-430831-A (GB)
Title: Improvements relating to landing gear for aircraft
IPC: G05D1/06
Filed: 1934-01-11
Abstract: 430,831. Controlling aircraft automatically. NORTON, J. B., Marston Hall, near Grantham, Lincolnshire. Jan. 11, 1934, No. 1100. [Class 4] In landing-gear for aircraft in which an angularly movable feeler or ski is extended below the aircraft and on contact with the landing surface automatically causes the controls to be set into the correct position to flatten out the machine, the rate at which the controls are set is varied in accordance with the air speed of the aircraft on landing. When the machine is approaching the ground the manual operation of a lever 8 connected to a rod 25 removes a pivoted catch 27 from a loop 5 on the ski 4 which moves angularly towards the ground under the action of its weight and of a cable 30 attached to the lever 8 until laterally movable spring catches 23, 24 (Fig. 8) engage associated recesses in the undercarriage 3. A lever 9, Fig. 3, is moved forward and actuates a rod 46 to the right, putting tension on a spring 50 attached to a piston 49 in a hydraulic cylinder 51 until a catch 47 is latched by a pivoted nose 75 on a vertically movable latch member 72 so that the spring load on the control column 7 is not affected by the tension of the spring 50. When the aeroplane reaches the landing surface the toe 4A of the ski 4 pivots about its axis 4B and operates a cable 15, Fig. 7, which withdraws the spring catches 23, 24 from their recesses. The ski 4 moves upwards under the action of a spring 37 and actuates to the left the cable 30 and the rod 25. A projection 71 on the rod 25 engages a pivoted lever 81 of which the end 79 moves downwardly to release the projection 47 from the catch 75, allowing the rods 48, 46 controlling the column 7 to move to the left. The rate at which the control column is moved depends upon the flow of liquid from the cylinder 51 through a valve 54 controlled by the speed of the aircraft on approaching the ground. An auxiliary airscrew 68 is connected through a flywheel 69 and governor mechanism 67 to a piston 65 which through a further piston 60 rotates an arm connected to a quick-threaded spindle. 56 on which the valve 54 is mounted. The landing gear can be put out of action if the pilot decides to delay landing, by moving the levers 8, 9 in succession to release the catches 23, 24 and to move the stop 47 into the off position releasing the tension in the spring 50.
Patent GB-1318683-A (GB)
Title: Support member for a printed circuit board
IPC: H05K7/12
Filed: 1971-01-08
Abstract: 1318683 Mounting electrical equipment TELEFONAKTIEBOLAGET L M ERICSSON 8 Jan 1971 [9 Jan 1970] 1115/71 Heading H1R A holding device for a printed circuit board comprises two arms with a connecting crosspiece provided with openings into which lugs provided on the board are fitted by resilient deformation of the device. In the described embodiment a printed circuit board 1 is fastened to a relay 11. Lugs 5, 6, 7 fit into corresponding openings in the holding device and a hook on arm 4 engages a notch in the board, which board extends beyond the arm 4 for electrical connection via soldering tags 15. The tags 15 correspond in position and shape to soldering tags of a relay spring assembly which the relay comprises. The holding device is attached to the relay by means of spring or screw means (not shown).
Patent GB-1033061-A (GB)
Title: Process and apparatus for the generation of gases
IPC: C01B32/50
Filed: 1963-01-10
Abstract: In the production of hydrogen in a gas generator (see Division B1), pellets of sodium borohydride and boric oxide in a molar ratio of 2: 1 which may contain also talcum (to facilitate shaping) or tributyl phosphate (as antifoaming agent) are brought into contact with water.
Patent GB-594354-A (GB)
Title: Improvements in or relating to scholars' desks
IPC: A47B7/02
Filed: 1945-01-15
Abstract: 594,354. Nesting desks. MYERS, B., and JOHNSON, S. P. Jan. 15, 1945, No. 1210. [Class 52(ii)] A stackable scholar's desk comprises back legs 3 disposed at the sides 7 of a locker 1 a distance apart greater than the width of the locker, front legs lying completely under the locker and a spacing element or elements 11 of height not less than the difference in height between the front and back of the locker.
Patent GB-1086233-A (GB)
Title: Improvements in or relating to methods of manufacturing pole-piece units for magnetic heads
IPC: G11B5/133
Filed: 1966-01-11
Abstract: 1,086,233. Magnetic heads. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 11, 1966 [Jan. 14, 1965], No. 1228/66. Heading G5R. A magnetic head polepiece for single or multiple track tape is formed from two blocks 1 and 2 of sintered oxidic ferromagnetic material each having a machine face 3, 4 by:- (a) Cutting away part of surface 3 to form a recess 5 having an edge 7 parallel to the future tape running surface x of the head. (b) Assembling the blocks, spaced apart by spacer 8, forming the grooves 9 and inserting magnetically insulating material 10 in the grooves. (c) Bonding the blocks and the insulating material together by heating with a vitreous substance such as glass or enamel. (d) Machining the upper surface of the block to form the running surface x, separating the upper part of the assembly from the lower portion at plane B and then forming grooves 13 in the surface B to meet the insulating material 10. Alternatively the upper part of the assembly may be separated from the lower at the plane γ.
Patent GB-1195002-A (GB)
Title: Cold-rolled Steel Sheets having High Yield Points
IPC: C21D8/02
Filed: 1969-01-09
Abstract: 1,195,002. Steel sheet and strip. SOC. METALLURGIQUE D'ESPERANCE LONGDOZ SOC. ANON. Jan. 9, 1969 [June 14, 1968], No.1313/69. Heading C7A. A process-annealed, cold-rolled sheet or strip has a yield point greater than 35kg/mm<SP>2</SP> and is formed of carbon steel containing Nb 0À015-0À05% in addition to conventional hardening elements and impurities. The sheet or strip may be made by hot-rolling, cold-rolling, process-annealing (e.g. at 680‹ C.) and skin-passing. The exemplified steel contains: P 0À04% max. Mn 0À5-1À5% C 0À05-0À2% S <0À03% Si 0À25-0À4% Al 0À04-0À1% Nb 0À015-0À05% Cu 0-0À4%.
Patent GB-986521-A (GB)
Title: Improvements in or relating to the manufacture of polymeric materials
Inventor: IBBOTSON ARTHUR
IPC: C08G18/10
Filed: 1962-01-15
Abstract: A rigid polyurethane is prepared by reacting a hydroxypolyether with excess of a polyisocyanate to form a prepolymer and reacting the prepolymer with further hydroxypolyether and a liquid of boiling point below 75 DEG  C., the hydroxypolyether having a molecular weight of 500-2000 and being a reaction product of sucrose and a cyclic oxide.  Specified cyclic oxides are ethylene oxide, propylene oxide, butylene oxide and epichlorohydrin. Alkali used to catalyse the formation of the hydroxypolyether may be removed prior to prepolymer formation with fluorosilicic or acetic acid.  In the latter case 0.1-1.0% benzoyl chloride should be added to the polyisocyanate.  Specified polyisocyanates are: hexamethylene diisocyanate, tolylene 2:4 and 2:6 diisocyanate, m- and p-phenylene diisocyanate, chlorophenylene 2:4 diisocyanate, diphenylmethane 4:41 diisocyanate, 3-methyl-diphenylmethane 4:41 diisocyanate, 2:4:6 triisocyanato-toluene, and 2:4:41 triisocyanato-di-phenyl ether and mixture of polyisocyanates, e.g. that formed by phosgenation of the mixed amine product of interacting formaldehyde with an aromatic amine, e.g. aniline or O-toluidine. Prepolymer formation takes place at 15-100 DEG  C. and 10-50% of the polyether is used.  The foaming step may be a batch or continuous process and the hydroxypolyether used may be different from that used for prepolymer formation.  The low boiling liquid is added to extent of 1-150% of polyether. Specified compounds are:-CCl3F, CCl2F2, CHCl2F, CHClF2, C2Cl2F4, CH2Cl2 and (CH3)2CO.  Other additives may be:-catalysts, e.g. dibutyl tin dilaurate, stannous octoate, iron or manganese acetylacetonate, 46dimethylamino pyridine, triethylene diamine, N:N-dimethylbenzylamine, N:Ndimethylcyclohexylamine or N:N:N1:N1-tetramethylbutanediamine, surface active agents, e.g. siloxane/oxyalkene block copolymers, oxyethylated phenols, oxyethylated fatty alcohols or block copolymers of ethylene or propylene oxides which may contain tertiary nitrogen atoms, monomeric polyhydroxy compounds, foam stabilizers, e.g. ethyl cellulose, colouring, plasticizers, fire proofing agents, e.g. tri-b chloroethyl phosphate or antimony compounds and antioxidants, e.g. tert.-butyl cathechol. In examples 1 and 4 a sucrose-propylene oxide condensate prepared with pressure and heating by a KOH catalysed reaction is reacted with benzoyl chloride excess and 2:4/2:6 tolylene diisocyanate to give a prepolymer.  This was foamed by adding CCl3F, a siloxane/oxyalkylene block copolymer, dibutyl tin dilaurate, tri-b -chloroethyl phosphate and further sucrose-propylene oxide condensate.  In examples 2, 3, 5, 6, 7, 8 and 9 the sucrose-propylene oxide condensate used in the foaming step differed from that used for prepolymer formation. In examples 10 and 11 acetic acid was added to the condensate to neutralize the KOH catalyst.  Specifications 891,776 and 892,557 are referred to.
Patent GB-703461-A (GB)
Title: Improvements relating to methods of and machines for making tubes
IPC: B23K9/032
Filed: 1952-01-17
Abstract: 703,461. Making tubes; uniting by fusion; coiling helices. MOND NICKEL CO., Ltd. Jan. 17, 1952 [Feb. 2, 1951], No. 1398/52. Classes 83 (2) and 83 (4) A process of making a tube by helically winding metal strip and welding the abutting edges of adjacent turns is characterized in that the welding is effected partly externally and partly internally, the depth of the penetration of the weld from the surface of the tube in each case being such that the two welds melt without any substantial interdiffusion between them, and one or both of the welds is or are autogenous to make one or both of the tube surfaces smooth. In tubes requiring a smooth internal surface the outside weld may be reinforced by a filler wire or electrode metal. Alternatively a filler wire or the like may be used on the inner weld to leave a smooth outer surface. The tube may be made from composite metal strip such as steel clad with nickel or nickel alloy, and the welding conditions are controlled so that the two welds meet at the junction of the base and cladding metals. Strip, graphite lubricated if desired, is fed by rollers 32 into a forming cylinder 11 through a slot 13 at an angle to the cylinder axis determined by the strip width and the outside diameter of the tube to be made. The abutting edges are welded internally by a welding head 15 mounted on a tube 27 and comprising a water cooled block 35 and rolls 19 geared together by wheels 22 and rotatable by a handle on a shaft 24. The tube 27 may be adjusted in position vertically and horizontally. The rolls 19 are pressed together by a screw 21 to grip a tungsten or like electrode 16, an inert gas, e.g. argon or helium, being fed to the electrode tip through a pipe 38 and passages 23, 34. On leaving the cylinder 11 the abutting edges of the strip are welded externally by a head similar to the head 15. In making tubes of small inside diameter, e.g. # inch, the electrode is introduced through the open end of the forming cylinder and is supported and controlled from outside. Examples of the application of the invention are given.
Patent GB-413641-A (GB)
Title: Improvements relating to the control of direct current electric motors
IPC: B60L15/04
Filed: 1933-01-16
Abstract: 413,641. Master control of motors; drum controllers. FERGUSON, A. D., Ardriac, Ashton Lane, Ashton-on-Mersey, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Jan. 16, 1933, No. 1420. [Class 38 (iii).] A remote control system for a number of motors includes a drum switch having pairs of operative positions corresponding to the inclusion of all motors or groups of motors in circuit, or the exclusion of a selected motor or group of motors, the drum switch being operated under the control of a master controller from one operative position to another operative position, for each pair to change the motor connections other from forward to reverse, or from power to brake operation. Motors 1, 2, Fig. 1, are under the control of a power-brake switch having positions P, B, and a combined reversing and cut-out drum switch RC. With the power-brake switch in power position P, and the switch RC in position R or F corresponding to " Both in," both motors are connected to run in a forward or reverse direction, subject to resistance control r, and series-parallel control S, M, G. When the switch RC is in position R or F corresponding to either " No. 1 Out" or " No. 2 Out," one of the motors only is connected for forward or reverse operation. Movement of the power-brake switch to position B connects the motor or motors for rheostatic braking. The reversing switch may have merely forward and reverse positions, the power-brake switch being provided with three sets each of two operative positions corresponding to driving or braking operation with both motors or a selected one in circuit. The combined cut-out and reversing switch or cut-out and power-brake switch consists of a contact carrying drum 20, Fig. 3, mounted on a shaft 21 which carries a loose pinion 29 gearing with a rack reciprocated by pneumatic means. A hand-wheel 30, having a boss 32, is arranged to slide but not rotate on the shaft 21, and is biassed by a spring 31 to a position in which projections 33 on the face of the pinion 29 engage recesses in the face of the bars 32. Thus the drum may be moved to any of three pairs of positions, the particular pair being selected by withdrawing the hand-wheel 30, rotating the shaft according to a pointer 35 co-operating with a scale 34, and releasing the handle to re-engage the pinion 29. Alternatively the drum 20 may be mounted on a sleeve rotatable on the operating shaft which is provided with a spring-controlled bolt engaging any one of several holes in the sleeve. Specification 413,642 is referred to.
Patent GB-103358-A (GB)
Title: Improvements in the Regulation of the Supply of Fuel to Motor Cycle and like Engines.
Inventor: BRECHIN MALCOLM
IPC: F02M3/09
Filed: 1916-02-01
Abstract: 103,358. Brechin, M. Feb. 1, 1916. Spray carburettors. - A pilot tube b conveys mixture from a pilot-jet chamber to the induction pipe a on the engine side of the throttle valve. The flow through the tube b is controlled by a valve comprising a globular head 5 on a stem 4, which passes through the induction pipe without appreciably obstructing it. The valve stem is screwed at 6, passes through a stuffing- box 10, and is actuated by the disk 7. To permit of a small flow when the valve is in its closed position, slots may be formed in the globular head 5.
Patent GB-631334-A (GB)
Title: Process for the manufacture of chromium salts and pure chromium
IPC: C25C1/10
Filed: 1947-01-16
Abstract: 631,334. Electrolytic production of chromium and chromium salts. GUARESCHI, P. Jan. 16, 1947, No. 1505. Convention date, Jan. 16, 1946. [Class 41] In a process for the manufacture of chromium salts, the starting material, for example, a chromium ore, impure metallic chromium, or a chromium alloy, is treated anodically, and the solution obtained at the anode, which contains chromates, or bichromates, is treated with an alkali to precipitate iron or other metals, which are then separated from the solution. In the diagram shown, 1 is an electrolytic cell to which ferro-chromium or chromate is supplied, together with sulphuric acid. Chromic acid, chromates and bichromates are formed at the anode 2, and chromium sulphate or chrome alum is formed at the cathode 3. The products at the anode are mixed with ammonia solution at 4, resulting in the precipitation of hydroxides of iron, aluminium, &c. at 5 and leaving at 6 a solution of chromates, bichromates, ammonium sulphate and sulphuric acid. These are transferred to the cathode compartment 3 when chromium sulphate, ammonium sulphate and sulphuric acid are obtained, which may be passed to a crystallization apparatus 7 to separate chrome alum, or may be treated at 8 with sodium hydroxide or potassium hydroxide, giving rise to sodium or potassium sulphate at 9 and chromium hydroxide 10. The latter is treated at 11 with sulphuric acid to form pure chromium sulphate. This is treated in an electrolytic cell 12 whereby pure chromium is deposited at the cathode 13. Chromic acid and sulphuric acid of the anode 14 are returned to the cell 1. The chromates and bichromates at 6 may also be treated in the cell 12 for the purpose of isolating chromium.
Patent GB-561446-A (GB)
Title: Improved bearings and the like and methods of making the same
IPC: F16C33/12
Filed: 1943-01-29
Abstract: 561,446. Bearings; electrolysis. CONSTANTINE, W. W. (General Motors Corporation). Jan. 29, 1943, No. 1521. [Class 12 (i)] [Also in Groups II and XXXVI] Bearings have a lining.of soft metal of substantially uniform thickness, a layer of tin being diffused into the surface to resist corrosion. The backing 10, e.g. steel, has a layer 12 of copper, copper-lead or silver bonded, cast or plated on. A soft lining 14, e.g. lead, is next applied, preferably by electrodeposition and plated with a coating 16 of tin. The bearing is then heat-treated to alloy the tin and lead. The thicknesses of the layers 12, 14, 16 lie within the limits of .002 to .025 inch for the layer 12, .00075 to .0015 inch for the lining 14, and .0001 to .0003 for the coating 16. The lead coating 14 is carried out in a bath comprising basic lead carbonate, hydrofluoric acid and boric acid. The heating is carried out in oil or in a non-oxidizing atmosphere at a temperature between 365‹ F. and 370‹ F., i.e. below the melting points of tin and lead but high enough to diffuse the tin into the lead.
Patent GB-727663-A (GB)
Title: Improvements in or relating to the production of creped material
IPC: B31F1/12
Filed: 1952-01-18
Abstract: 727,663. Creping paper &c. AMBRUS, T. April 20, 1953 [Jan. 18, 1952], No. 1557/52. Classes 42 (1) and 96. Paper or textile material from a roll 11 is moistened at a press 13, 14 and creped transversely by a doctor blade 17 and a creping roll 16, it passes between travelling bands 19, 20 of fine sponge-rubber, compressed together by rollers 30 and skid-plates 31 acting against belts 27, 28, e.g. of woven duck, the bands 19, 20 being compressed edgewise to crepe longitudinally the paper held between them. The doubly creped paper then passes over guides 44 to a conveyer 45 and drying cylinders 46, 47, and is wound into a roll 48. The edgewise compression of the sponge-rubber bands is effected by two endless narrow bands which are made to converge towards each other whilst they travel in contact with the edges of the sponge rubber bands 19, 20. The central part of the belts 27, 28 may be ribbed transversely. The rollers 30 are idlers and are eccentric or have flats machined on them to vibrate the belts 27, 28 and facilitate their displacement.
Patent GB-392658-A (GB)
Title: Alloy for permanent magnets
Filed: 1932-01-19
Abstract: Alloys for permanent magnets contain iron, 8,1-29,5 per cent of nickel, and 5,-20 per cent of aluminium with or without less than 1,5 per cent of carbon.  The Specification as open to inspection under Sect. 91 comprises alloys containing iron, 5-40 per cent of nickel, and 1-20 per cent of aluminium, with or without less than 1,5 per cent of carbon. This subject-matter does not appear in the Specification as accepted.
Patent GB-729595-A (GB)
Title: Manufacture of compounds of the steroid series
IPC: C07J9/00
Filed: 1953-01-20
Abstract: a  : b -Unsaturated ketones of the steroid series corresponding to the following partial formula (showing rings B and C) <FORM:0729595/IV (b)/1> are obtained by reacting a 7-keto-8 : 9-oxido steroid with zinc and a lower molecular aliphatic carboxylic acid with at most 5 carbon atoms, e.g. with zinc and glacial acetic acid. As starting steroid there may be used derivatives of cholestane, coprostane, sitostane, stigmastane, cholane, allocholane, spirostane, pregnane, androstane and aetiochloane.  In an example D 22,23 - 3b  - acetoxy - 7 - keto - 8 : 9-oxido-ergostene is utilized.  D 22,23 - 3b - acetoxy - 7 - keto - 8,9 - oxidoergostene is obtained by treating D 7,8 : 22, 23-3b -acetoxy-ergostadiene with chromium trioxide in glacial acetic acid.
Patent GB-1446414-A (GB)
Title: Rotor and stator assemblies
IPC: B24B31/108
Filed: 1973-01-12
Abstract: 1446414 Applying chemicals to seeds IMPERIAL CHEMICAL INDUSTRIES Ltd 29 Oct 1973 [30 Oct 1972 12 Jan 1973] 49839/72 Heading A2Q [Also in Division B3] A rotor and stator assembly useful for applying chemicals to seeds, comprises a rotor 1 which is dished and has a face 5 at its edge in parallel alignment with a corresponding face provided by the stator 2 and separated therefrom by a diametral clearance within the range 0.0005 to 0.05 inches. The rotor is rotated about a vertical axis by a gear box and motor assembly 4 and its surface 5 is preferably 0.001 to 0.025 inches from the surface of the stator. A groove or grooves containing grease may be provided in the face 5 or in the stator. In an other embodiment, a triangular ridge 7, Fig. 3 is provided on the stator, one face of the ridge being in parallel alignment with the face of the rotor.
Patent GB-395747-A (GB)
Title: Improvements in or relating to mercury vapour rectifiers
IPC: H02M7/15
Filed: 1932-01-20
Abstract: 395,747. Rectifying alternating current. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and GALLIZIA, E., c/o General Electric Co., Witton, Birmingham. Jan. 20, 1932, No. 1750. [Class 38 (ii).] To prevent back ignition in a mercury - vapour rectifier having control grids each grid is connected through an impedance with another anode having a leading voltage, the connection being such that during the first part of the cut-off period of each anode its grid has a negative potential relative thereto. In the six-phase rectifier shown in the Figure each grid 18 is connected through a high resistance 19 with the next leading anode. With this connection the grid potential leads the anode potential by 60‹. In a modification the rectifier is supplied from a transformer having two three-phase secondary windings with star-points interconnected through an interphase transformer. With this arrangement each grid may be connected to the next but one leading anode. The Specification describes a construction of control grid consisting of a metal ring supporting a number of parallel metal vanes. In a modification of this the vanes are replaced by a circular sheet of fine mesh wire gauze. Specification 386,429, [Group XL], is referred to.