baber/WOPTO huggingface dataset:
Patent GB-785983-A (GB)
Title: Improvements in and relating to the production of polymeric and copolymeric products
Inventor: BAMFORD CLEMENT HENRY
IPC: C08G81/02
Filed: 1955-02-22
Abstract: Block polymers or copolymers are obtained by polymerizing a monomeric polymerizable ethylenically unsaturated compound, e.g. styrene, methyl methacrylate, acrylic esters, acrylonitrile, vinyl acetate, vinyl chloride and vinyl pyridines, in the presence of an initiator containing an azo group and also a functional group capable of entering into coupling reactions, e.g. gamma, gamma1 - bis - gamma-cyanovaleric acid, whereby a polymer is formed having a functional group at one or both ends of the polymer chain, and thereafter coupling the polymer with a compound having at least two groups capable of reacting with the functional group in the polymer, e.g. 1,6-hexane - diol, 1,10 - decane - diol and hexamethylene diisocyanate.  Prior to the coupling reaction carboxyl groups on the polymer produced by polymerization in the presence of the above-mentioned initiator may be converted into acid chloride groups by reaction with thionyl chloride.  The products consist of blocks of polymeric units of the same or different type united by residues of the coupling compound; by suitable variations in the operating technique copolymers may be obtained containing blocks of different polymeric units in regular sequence.  Specifications 626,155 and 715,194 are referred to.
Patent GB-290383-A (GB)
Title: Improvements in devices for teaching gunnery
IPC: F41G3/26
Filed: 1927-02-24
Abstract: 290,383. Jepson, W. Feb. 24, 1927. Teaching gunnery.-The turret 10 of an instructional gun 11<a> is mounted on a platform 6, which can be rocked in imitation of the movements of vehicles or ships. The platform is guided between vertical corner posts 9 and is partly supported by universally-jointed pillars 7 at one end of beams 3 pivoted at 2 on the foundation frame 1 and counterbalanced by weights 4 at the other end of the beams. Chains 13 are attached to the front corners of the platform and a chain 16 is attached to the middle of the rear end of the platform, forming a three-point suspension completing the support of the platform and serving to impart the rocking movements thereto. Each chain passes over a pulley 14, then under a jockey pulley 60 and over a pulley 30, and is finally attached to a pillar 19, which is hinged on a pivot 20 and can be angularly adjusted thereon by means of a hand screw device 24 in conjunction with a. shoe 21, to regulate the tension of the chain. The pulley 60 is eccentrically carried by a rotatable disc 61, and can be set to various positions or continuously moved by the rotation of this disc. The pulley 30 is carried by a slotted arm 31 mounted on a crank 32 on a shaft 36; and the slot in this arm is engaged by a sliding block 33 on a crank 35 on a shaft 50. The pulley 30 is thus given a compound movement depending on the relative speed of the shafts 36, 50 and the phase relation of the cranks 32, 35. All these movements are derived from a shaft 40 driven by a motor 42, a clutch 71 being interposed in the driving mechanism of the pulley 60, so that this pulley can be set to different positions when required or can be kept continually in motion. The clutch 71 is controlled from the gun platform by a handle 72. A frame 11 is attached to the muzzle of the gun, and a miniature target 12 is slidably mounted in the frame and attached to a cord 95, which passes over a pulley 96 on the frame and is wound on a roller 94 fast with another roller 92. Another cord 93 is wound on this la.tter roller and is attached to the muzzle of the gun. The rollers 92, 94 are wound up by a spring and are mounted at the front end of a balanced beam 91 rotated about a pillar 90 by the training movements of the gun. With this arrangement, an elevation or depression of the gun barrel causes a corresponding reverse movement of the target 12. A dotter 97 operated by the gunner indicates on the miniture target whether he has succeeded in correctly manipulating the gun to compensate for the movements of the gun platform. Specification 137,443 is referred to.
Patent GB-251946-A (GB)
Title: Improvements in radiating antenna systems
IPC: H01Q1/14
Filed: 1926-02-25
Abstract: 251,946. British Thomson-Houston Co., Ltd., (Assignees of Alexanderson, E. F. W.). May 9, 1925, [Convention date]. Aerials; directive signalling.-An aerial system in which the rotated energy is projected as a space wave inclined to the horizontal, and is characterized by a predominant horizontal polarization, comprises two or more horizontal radiators 11, 12, Fig. 1, mounted above the earth a distance equal to at least one-eighth the effective wave-length. The distributed inductance of the aerial may be neutralized by series condensers in known manner. High-frequency current is supplied from a suitable source 3 to each radiator through non-radiating vertical leads 15, 16 and 17, 18 comprising phase-adjusting means 19, 20. When the currents in the two radiators flow simultaneously in the same direction, the wave-emission is a maximum vertically upwards and at right-angles to the length of the aerial; when the currents are in phase-opposition, maximum radiation takes plate at 45‹ inclination and in the length direction of the aerials. Fig. 6 shows a linear radiator 36 with series condensers 38 in combination with a similar reflector 37 to increase the directional effect. Two or more horizontal radiators may be fed in parallel, the spacing of the radiators, and the phase relation of the current supplied to them being adjusted so as to control the angle of direction and the concentration of the radiated beam. The radiators may also take the form of one or more closed loops suspended vertically, and the currents in the vertical limbs may be adjusted so that the effective radiation is confined to the horizontal sides. Fig. 9 shows a vertical closed loop 51 with series condensers 54 fed centrally from a source 3, and adapted to be swung into various inclined positions as indicated by the dotted lines 52, 53. Series condensers may also be distributed along the supply lines from the high-frequency supply to prevent the radiation of vertically polarized waves. Specification 243,706 is referred to.
Patent GB-693464-A (GB)
Title: Improvements relating to direct current electric transmission systems employing valve converters
Inventor: BUSEMANN FELIX
IPC: H02M5/447
Filed: 1951-03-06
Abstract: 693,464. Converting. BRITISH ELECTRICAL & ALLIED INDUSTRIES RESEARCH ASSOCIATION. Feb. 29, 1952 [March 6, 1951], No. 5423/51. Class 38 (ii). In a transmission system in which a D.C. line including smoothing chokes 40, 41, 43, 44 is fed by valve rectifiers connected in two double three-phase bridge arrangements each indicated by numerals 1-6, and feeds two arrangements of valve inverters similarly arranged and each indicated by numerals 101-106, resistors 30, 31 are connected during starting between the neutral points of the secondary windings of transformers 12, 13 supplying the rectifiers, and each of the D.C. terminals 16, 18 and 17, 18 of the rectifying arrangements. Thus, when the rectifiers are operated with grid pulses of less than 60 degrees duration, when the first valve fires, a resistor allows current to flow until a second valve fires to complete the rectifying path. Similarly, resistors 131 are connected to the inverter transformers, but one for each of the bridge arrangements must be of higher value or absent, to allow the voltage across the valve which first fires to reach the higher voltage needed for starting. Suitable switching arrangements for connecting and disconnecting one of the resistors associated with each converter bridge may be interlocked with a device for changing the grid control setting from rectifier to inverter operation. The resistors may be semi -conducting glaze on the converter insulators, or arranged as voltage dividers or other damping networks.
Patent GB-823127-A (GB)
Title: Improvements in and relating to mine roof support systems
Inventor: POTTS MICHAEL CHARLES
IPC: E21D23/08
Filed: 1955-02-23
Abstract: 823,127. Mine roof supports. DOWTY MINING EQUIPMENT Ltd. Feb. 16, 1956 [Feb. 23, 1955], No. 5450/55. Class 20 (2) [Also in Group XXX] Mine roof supports connected by feed jacks to a coal conveyer 13, Fig. 1, are of two kinds 14, 17 the supports 14 each having a roof bar with a longer cantilever extension 21 than the extension 22 of each support 17 so that the supports 14 can be advanced to support the newly exposed roof in the wake of a coal cutter 12 before the coal conveyer can be advanced. The supports 14 have two hydraulic props between floor and roof bars and the supports 17 have three hydraulic props and both supports are advanced by the feed jacks after the pressure in the hydraulic props has been released and the conveyer is advanced by the feed jack connections to the supports 14. Each prop has a convex base and head to allow rocking movement relative to the floor and roof bars, located by a spigot 29, Fig. 3, and a bolt 41 respectively, a rubber collar 32 restores the prop to the vertical. The feed jacks 44 are mounted in the hollow floor bars 23 by means of a gimbals 47 and the jack piston rod 51 is connected to the conveyer 13 by a universal joint 54 and a long vertical pin 55 to allow for relative movement of the floor bar and the conveyer 13. A shield 57 for the piston rod 51 is drawn out therewith by forks 58. The feed jack 44 is double acting, the chambers 99, 102, Fig. 4, of which are connected to supply and lease mains by a handoperated selector valve having spring plunger valves. The props are supplied and released through the selector valve and the jack 44, the supply being through the chamber 102, i.e. when the jack is fully contracted and a check valve 104 to a hand-operated spring plunger supply valve and check valves to each prop and the release takes place through check valves, a hand-operated release valve 127 and check valves 134, 135 to either the chamber 99 or 102 which ever is at low pressure. The release valve contains an excess pressure release valve 131. The roof supports 14 have an adjustable stop in the shield 57 to limit the distance the support advances.
Patent GB-657613-A (GB)
Title: Improvements in or relating to mosaic screens
Inventor: CASSMAN HARRY
IPC: H01J31/36
Filed: 1946-02-21
Abstract: 657,613. Ornamenting. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 21, 1946, No. 5469. [Class 93] [Also in Group XL (a)] In the manufacture of a cathode-ray tube mosaic screen, a mesh comprising bars 7 of triangular cross-section is arranged with the ridges 2 in contact with an insulating surface 3, and metal is evaporated on to the surface through the insterstices of the mesh to form metal elements 8 insulated by a shadow area 9 from the bars 7. The mesh which may or may not be subsequently removed may be of nickel or aluminium and may be insulated, e.g. by anodising the aluminium. The base plate may be of glass or mica and the deposited metal, antimony, a stibide or silver. The mesh may be mounted on the insulating surface by the use of a cement comprising lead borate or lithium borate powder suspended in acetone or water. Specifications 657,634 and 657,666, [both in Group XL (a)], are referred to.
Patent GB-1003104-A (GB)
Title: Improvements in and relating to sponge mops
IPC: A47L13/257
Filed: 1964-02-10
Abstract: 1,003,104. "Sponge mop". DRACKETT CO. Feb. 10, 1964 [Feb. 20, 1963], No. 5547/64. Heading A4F. A mop comprises an absorbent pad 10 having adapter plates 11, positioned near either end, extending less than the entire length of the pad which is attached to a substantially rigid backing plate 21, by fastening of the adapter plates 11 and metal backing plates 21 exclusively by slot and tab means 13, 24 to permit freedom of lateral movement of the pad. The metal adapter plates 11 are connected to the block 10 and a fabric 12 anchored to the block 10 over them. The slots 13 are defined by raised portions 14 formed integrally with the plates 11. A stop 25 (Fig. 3 not shown) may be provided to limit movement of the pad 10. In modifications the tabs may be on the adapter plates 11 and the slots in the backing plate 21. The plates may contain punched recesses for engagement with screws to allow the pad to be attached to other mop frames by conventional methods.
Patent GB-682919-A (GB)
Title: A new or improved process for the production of metallic titanium
IPC: C25C3/28
Filed: 1951-03-07
Abstract: 682,919. Electrolytic production of titanium TITAN CO., Inc. March 7, 1951 [March 20 1950], No. 5566/51. Class 41. A process for the production of titanium comprises electrolysing a chloride salt of titanium in which the titanium has a valence of less than 4, in a cell which is divided by a porous diaphragm into cathode and anode compartments and which contains a molten salt electrolyte at an elevated temperature, the titanium chloride being in solution in the portion of the electrolyte within the cathode compartment. The chloride may be titanium dichloride, titanium trichloride, or a mixture thereof. The electrolyte consists of a halide of one of the alkali-metal and alkaline earth metals, including magnesium, and mixtures thereof. It may comprise a mixture of about 27 per cent sodium chloride and the remainder strontium chloride. The apparatus shown comprises a furnace 10 with gas burners 11 for heating a cell 12 made from fused impervious silica and preferably protected by a stainless steel sheath 13. The cell is divided by a porous diaphragm 17 into two compartments one containing anodes 16 of graphite, and the other containing a cathode made from an elongated plate 15 of a noble metal such as tantalum. An inert gas such as argon or helium may be supplied to the cathode compartment through a pipe 19 to protect the surface of the electrolyte. The anode compartment may be provided with pipes 21 to carry off chlorine released at the anodes. The diaphragm 17 may be of fused alumina. The titanium dichloride and/or trichloride may be mixed with the electrolyte in the cathode compartment. On electrolysis titanium is deposited on the cathode 15. Alternatively the tantalum cathode plate 15 may be replaced by a tube lined with silica and titanium tetrachloride gas supplied downwardly through the tube, the tetrachloride being reduced by electrolysis, preferably to the dichloride. Afterwards the tubular cathode is replaced by the cathode plate 15 and the metal is deposited electrolytically on the plate. The titanium is cooled out of contact with the atmosphere and is then leached, preferably in a weak solution of hydrochloric acid, which can also be used to strip the metal from the cathode.
Patent GB-229497-A (GB)
Title: Combined fan and turbine
IPC: F04D25/04
Filed: 1924-03-04
Abstract: 229,497. Keith & Blackman Co., Ltd., J., and Bain, D. B. March 4, 1924. Pumping-machines and fan apparatus. - A centrifugal fan is combined with its driving tur. bine; it has an impeller wheel with a back plate 2 with fan blades 3 on one side and turbine blades 1 on the other. A nozzle directs pressure fluid against the blades 1 and the fluid passes from them to fixed deflector blades 9; it leaves the blades 9 and mixes with the fan blast. The nozzle may supply compressed air or steam. The impeller and turbine wheel are mounted to rotate on a fixed spindle 6.
Patent GB-1518735-A (GB)
Title: Control apparatus for a pump
IPC: F04B49/08
Filed: 1976-02-12
Abstract: 1518735 Fluid-pressure servomotors ROBERT BOSCH GmbH 12 Feb 1976 [12 Feb1975] 5616/76 Heading G3P The output of a pump 11 driven by an I.C. engine 10 is adjusted by a piston 18 controlled by a spring-loaded valve 27 to which actuating pressure proportional to the square of the speed of the engine is applied by a pilot pump 30. The piston 18 controls the output of two pumps 11, 12 simultaneously and operates against a piston 17 subjected to output pressure from the pumps. The spring-loading for the valve 27 is also adjusted by the piston 18 to provide proportional control. Alternatively, a throttle 33 may be adjusted by the pumps. In a still further embodiment, each pump (39, 40), Fig. 2 (not shown) is controlled by a separate valve (41, 42). Constructions of spring-loaded valves for use in the embodiments of Figs. 1 and 2 are shown in Figs. 4 and 5, respectively.
Patent GB-888213-A (GB)
Title: Improvements relating to electrical connecting devices
Inventor: COOK SIDNEY ARTHUR
IPC: H01R4/24
Filed: 1959-02-18
Abstract: 888,213. Cable and wire couplings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 8, 1960 [Feb. 18, 1959], No. 5660/59. Class 38 (1). A device for making an electrical connection to an insulated conductor 4 at an intermediate point in its length comprises a metal body 1 having slots 3 to accommodate the conductor 4 and an insulating body 7 carrying a terminal 9 with an electro-tinned spike 10 which pierces the insulation and contacts the conductor core 4 when the body 7 is screwed into the body 1. A screw 14 partly in a hole 15 in the body 7 attaches a wire 12 to the terminal 9 and prevents relative rotation of the body 7 and terminal 9. An insulating pellet 11 prevents the spike 10 contacting the metal body 1.
Patent GB-539985-A (GB)
Title: Improvements in or relating to the manufacture of wet spun protein fibres
IPC: D01F4/00
Filed: 1940-03-30
Abstract: 539,985. Artificial wool. PERRETTI, A. March 30, 1940, No. 5776. Convention date, March 30, 1939. [Class 2 (ii)] In the wet spinning of protein fibres, the fibre is removed from the coagulating bath and treated by immersion in one or more baths to arrest its tendency to swell on contact with aqueous solutions and also to harden and ultimately completely insolubilize it, the insolubilization being effected or assisted by the action of a chromium salt which is dissolved in the bath or in one or more of the baths in which the fibre is immersed on removal from the coagulating bath. Formaldehyde may be dissolved in the bath or baths containing the chromium salt. The chromium salt may be chromium sulphate, chrome alum or chromium chloride or a tanning agent containing the salt. An aqueous alkaline solution of the protein may be squirted into an acid coagulating bath and then immersed in a deacidifying bath, which may be an aqueous solution of sodium chloride, and hardening and insolubilizing bath or baths of aqueous solutions of aluminium sulphate and sodium chloride may be used to one or more of which, preferably the last, the chromium salt may be added with formaldehyde. The temperature of the washing, hardening, and insolubilizing baths used is above 25‹ C. and after treatment the fibre is neutralized, preferably before drying, by treatment, e.g. with sodium borate, sodium bicarbonate or ammonium hydrate. The process is particularly applicable to fibres, obtained from milk casein, soya casein or a mixture of these. Specifications 6700/98, [Class 2], 483,731, 510,131, 510,616, 510,656 and 511,160 are referred to.
Patent GB-1031624-A (GB)
Title: Apparatus for unwinding material from a spool
IPC: B65H59/40
Filed: 1965-02-10
Abstract: 1,031,624. Unwinding filamentary material. B. F. GOODRICH CO. Feb. 10,1965 [Feb. 11, 1964], No. 5783/65. Heading D1J. Filamentary material-for example mono- or multi-filaments, strands, cords or cables, of metal, glass, or natural or synthetic fibres-is unwound at constant tension from spool 19 by passing the material around sheave 30 mounted on lever 21 which is pivoted at 22 and which has a brake shoe 27 which, if the tension in the material being unwound tends to change causing lever 21 to pivot, moves into or out of engagement with brake drum 16 mounted on spool spindle. The tension in the material being unwound is set by the position of link 37 by which arm 24 attached to lever 21 carries lever 34 pivoted at 35. Dashpot 49 has a piston 51 with one or more ball valves so that lever 21 can pivot more rapidly to apply the braking force than to release it.
Patent GB-548835-A (GB)
Title: Wheeled skate
IPC: A63C17/08
Filed: 1941-05-05
Abstract: 548,835. Wheeled skates. HOCKIN, F. W. May 5, 1941, No. 5848. [Class 132 (i)] A wheeled skate device comprises a leg bar adapted to be secured to the leg below the knee, a foot rest on the lower end of said leg bar, and a single road wheel mounted in a fork member adapted to occupy either an operative, lowered position, or an inoperative raised position on the leg bar. The bar 9, adapted to be strapped to the leg, has at its lower end a foot rest 13, and carries on the other side a fork 6 fixable in upper or lower positions by means of spring trigger 25 and carrying the solid-tyred wheel 1, which, because of a ratchet and pinion, can only rotate in the forward direction. A rearwardly-extending spur 20 serves as a brake. With the fork and wheel in upper position, the user can walk while still wearing the skate.
Patent GB-398736-A (GB)
Title: Apparatus for fumigation by means of aldehydes
IPC: A61L2/20
Filed: 1933-02-27
Abstract: <PICT:0398736/III/1> <PICT:0398736/III/2> <PICT:0398736/III/3> In fumigating-apparatus for vaporizing and catalytically oxidizing alcohols, the evaporation is produced independently of the oxidation by an electric heating resistance, the catalyst being of such a nature and so placed that the heat evolved by the reaction is insufficient to evaporate the alcohol unless the resistance is fed with current.  Distant control of any number of apparatus is therefore possible.  Preferably, the catalyst is heated by the same resistance.  A wick 4 is a tight fit in a metal tube 3, Fig. 1, secured to a plate 5 apertured at 6 and resting on the alcohol container 1.  The tube 3 is surrounded by a sleeve 7 of mica or other insulating material on which is wound the resistance 8, covered in turn by an asbestos sleeve 10 and varnish 11.  The upper part 3<1> of the tube 3 may be of copper or other catalytic metal, alloy, or composition, as may be grids 12, or gauze 13 surrounding the upper part of the wick.  Grooves 16 inside the tube 3, and ports 14, 15 in the tubes 3, 10 respectively may be provided for circulation of air. A porcelain or other cap may be provided comprising an inner cap 20<1> and an outer rotary cap 20<2>, Fig. 3.  By rotation of the latter, the apertures 21<1>, 21<2> may be brought into or out of register, and the heating circuit simultaneously closed or opened through contacts 23, 24 carried by the caps.  In a modification, Fig. 4, the wick 32 is held by metal wires 33 which carry a catalyser 35. The resistance 36 is wound on a former 37 having a diameter increasing from bottom to top so that the heat transmitted to the wick is proportional to the speed with which the evaporated liquid is replaced.  The inner surface is preferably parabolic.  A cover 39 is carried by a pivoted lever 41 which is attracted by an electromagnet 44, either in series or in parallel with the resistance 36, as soon as the apparatus is put into operation.  The electromagnetic means might be used for closing the ports admitting air into, or vapour out of, the apparatus.  In Fig. 5, the resistance 52 is shown wound on a core 51 having a recess 53 which houses the wick 54 held in a tube 55 which communicates with the recess through openings 58.  Ducts 59 connect the recess with the space between the core 51 and the catalysing bell 61.  Openings 62 admit air, while aldehyde vapours leave by apertures 63.  The bell 61 may be of metal, for example copper, but is preferably made of an inert porous material such as baked china clay or compressed, pulverized magnesia, asbestos, or the like, which has been impregnated with a 5 per cent silver nitrate solution, dried, and treated with boiling dilute formic acid solution to effect reduction to metallic silver.  A reinforcing metal gauze may be imbedded, or the catalyst may be held between two perforated reinforcing members.