baber/WOPTO huggingface dataset:
Patent GB-887061-A (GB)
Title: Apparatus for determining the relative positions of two members
Inventor: KING DEREK LA WINDELL WATTS
IPC: G01D5/245
Filed: 1959-03-06
Abstract: 887,061. Electric selective signalling systems. ROLLS-ROYCE Ltd. Feb. 26, 1960 [March 6, 1959], No. 7949/59. Class 40 (1). Apparatus for determining the relative position of two members comprises a plurality of sensing heads, each forming at least a portion of an electrical inductor, carried by one member, the second member being adapted to alter the values of successive inductors upon relative movement taking place, and the inductors controlling means for indicating the relative positions of the members. A number of sensing heads 10, spaced at equal angular intervals and supported on a fixed member (not shown), co-operate with a ferro-magnetic movable member 18 formed with a projection 19 which, as it moves, varies the reluctance of successive sensing heads, and operates, e.g. lamps connected to their windings 14, thus indicating the angular position of the member 18. In a second embodiment a gap is provided in the member 18 instead of the projection 19. A plurality of movable members may be geared together in 10: 1 ratios to give greater accuracy of indication.
Patent GB-550449-A (GB)
Title: Improvements in endless track members
IPC: B64C25/38
Filed: 1941-06-25
Abstract: 550,449. Endless tracks for vehicles. DOWTY EQUIPMENT, Ltd., and SMITH, H. H. June 25, 1941, No. 8000. [Class 79 (i)] An endless-track unit comprises a body member or frame 3 formed in two lateral halves connected together and provided with a recess, track-bearing rollers 22 running in and confined against both lateral and outward displacement by the recess, and a continuous track member 20 directly bearing on the rollers. In the construction shown applied to aircraft landing-gear the halves of the body are secured together by means of dowels 4, 5 into the ends of which caps or plugs 10, 14 are screwed, locking means 13, 16 being provided for the caps. The track bearing rollers 22 are spaced apart by spindles 26 having end flanges 27 of the same diameter as the rollers 22. The ends of the rollers 22 and the end flanges 27 run in grooves in the body 3 and are prevented from moving outwardly by inwardly-projecting parts 21 of the body. The track is of rubber or synthetic rubber composition reinforced by wires 28 and is provided with a rib 24 engaging central recesses 25 in the rollers 22 to prevent lateral movement of the track. Each part of the body is provided with a lug 29 pivoted to the aircraft at 30, pitching movement being controlled by a shock-absorber (not shown) connected to an arm 31 on the lugs.
Patent GB-944266-A (GB)
Title: Process for the production of acrylonitrile copolymers
IPC: C08F220/46
Filed: 1962-03-01
Abstract: Copolymers containing at least 70% by weight of combined acrylonitrile are made by polymerizing acrylonitrile with 0.1 to 10% (calculated on the weight of monomers to be polymerized) of a compound of the general formula: <FORM:0944266/C3/1> or a water-soluble salt thereof in which R1 is a hydrogen atom, a methyl group or a chlorine atom, R11 is a C1-C8 alkyl group, an aryl radical or an aralkyl radical, A is (CH2),n a phenylene radical or a radical of the formula: <FORM:0944266/C3/2> n being an integer of from 1 to 4 and m is an integer of from 1 to 3.  Components of the said type specified are N-methyl and N-butyl.  N-beta-ethylsulphonic acid acrylamide and methacrylamide, N-phenyl-N-methylsulphonic acid acrylamide and chloroacrylamide, N-phenyl-N-ethylsulphonic acid methacrylamide, N-ethyl - acrylamido - benzene - disulphonic acid, N-butyl - methacrylamido - benzene - disulphonic acid, sulphanilic acid - N - butyl acrylamide and methacrylamide, and N-butyl - acrylamido, N-phenyl-acrylamido and N-propylmethacrylamido - p - toluodisulphonic acids. Other monomers which may be present during copolymerization are methyl and butyl acrylates, methacrylic esters, vinyl acetate, vinyl and vinylidene chlorides and styrene.  The polymerization is preferably carried out in aqueous solution in the absence of emulsifiers, although these may be used if desired. Catalysts which may be employed are hydrogen peroxides, organic peroxides and hydroperoxides, azo compounds and, especially, redox systems, e.g. combinations of persulphates or perphosphates with sulphites, bisulphites, pyrosulphites and thiosulphates, which may be activated by heavy metal ions, e.g. those of iron or copper.  The pH of the aqueous polymerization is generally below 7, e.g. 1 to 3.  The monomer mixture may be added gradually as the reaction proceeds, and further quantities of catalyst may be added at intervals.  The resulting copolymers are used to form filaments which are dyeable with basic dyestuffs.  Specifications 807,241, 819,049, 834,523 and 834,524 are referred to.
Patent GB-281736-A (GB)
Title: Improvements in helicopters
IPC: B64C27/04
Filed: 1919-03-31
Abstract: 281,736. Brennan, L. March 31, 1919. Clutches, friction. - A gyroscope driving- spindle 73 is driven from a rotary engine casing 28 by a spigot coupling 77, 78 and a centrifugal friction clutch, so that if the engine fails the gyroscope continues running under its own momentum. Clutch members 76 pivoted on the casing 28 at 82 engage the drum 80 centrifugally when the engine is running but otherwise are withdrawn by springs 84.
Patent GB-511928-A (GB)
Title: Improvements in or relating to propellor fans
IPC: F04D29/54
Filed: 1939-03-13
Abstract: 511,928. Screw fans. BARKER, D. R. and BARKER, W. H. March 13, 1939, No. 8069. [Class 110 (i)] The air entering the blades of a fan 3 is guided by a ring 1, attached to a surrounding wall or the like 2, which is rounded at its inner circumference 4. The ring may be sunk into the wall 2.
Patent GB-949271-A (GB)
Title: Improvements in or relating to the purification of hydrofluoric acid
IPC: C01B7/19
Filed: 1962-03-01
Abstract: 949,271. Purifying hydrofluoric acid by distillation. SIEMENS-SCHUCKERTWERKE A.G. March 1, 1962 [March 10, 1961], No.8078/62. Heading B1B. Hydrofluoric acid is purified by submitting it to distillation in apparatus wherein at least the evaporation vessel is made of, or lined with, pure silicon, i.e. silicon having the purity necessary in the semi-conductor art. The acid is preferably distilled, under reduced pressure, at a temperature in the range 60- 100 ‹C. In the apparatus shown, the evaporation vessel 2 is made if iron and lined with silicon. It is partly immersed in water-bath 3 and heated by electric element 4. Delivery-tube 7, which is also made of iron and lined with silicon, passes through condenser 8 to a polyethylene bottle 9a, which is mounted in a receiver 9 connected to a vacuum pump. If desired, the delivery-tube and the receiver may be made from, or lined with, polypropylene, polytetrafluoroethylene, or polytrifluoroethylene.
Patent GB-1164262-A (GB)
Title: Centrifugal Liquid Pumps.
Inventor: LEWIS GEOFFREY ARTHUR
IPC: F04D29/22
Filed: 1966-02-24
Abstract: 1,164,262. Centrifugal pumps. JOSEPH LUCAS (INDUSTRIES) Ltd. Feb. 17, 1967 [Feb. 24, 1966], No.8132/66. Heading F1C. In a centrifugal pump for supplying fuel to a gas turbine engine driving the pump, having an inlet 12 at or near the rotational axis and an outlet 13, a valve member 18 at the discharge orifice 16 of a substantially radial passage 15 in the rotor 11 controls the flow through the passage in accordance with speed. The valve member 18 is connected to the rotor at a position diametrically opposite to the discharge orifice 16 by an inclined arm 19. Thus, centrifugal force urges the valve member towards its closed position, the stiffness of the arm 19 being such that flow is progressively restricted only after a predetermined speed has been reached. Movement of the valve member is adjustable via screw 21 and spring 20.
Patent GB-398812-A (GB)
Title: Improvements in or relating to telephone systems or the like
IPC: H04M3/64
Filed: 1932-03-19
Abstract: 398,812. Automatic exchange systems. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, McCLEW, J. W., 27, Arlescourt Road. West Derby, both in Liverpool, and BAKER, G. T., Blackbrook, Caerphilly, Glamorgan. March 19, 1932, No. 8259. [Class 40 (iv).] Selective signalling, e.g. between a keyboard and registers in a system such as that described in Specification 393,583, is effected by transmitting combinations of + and - impulses over two or more line wires, the impulses being separated at the receiving end by rectifiers. As shown, a keyboard transmits strong or weak - impulses or weak + impulses over wires A, B, each of which is branched at the receiving end through metal rectifiers MRA .. MRD. The relays X, Z are sensitive to + impulses and marginal to - impulses. Slave relays WA .. ZA control lamps 1 .. 0, STA, STB, C. The signal sent by S is variable by connecting terminal c to either of the terminals a, b. The number of selections may be increased by arranging that a single operation of a key produces two or more impulses in the same wire.
Patent GB-585830-A (GB)
Title: Improvements in or relating to screws
IPC: F16B35/00
Filed: 1944-05-04
Abstract: 585,830. Set-screws. LORD, G., and BURGESS, G. May 4, 1944, No. 8435. [Class 89 (i)] Set-screws for locking parts such as screwthreaded members are provided with renewable pads of soft metal such as lead, babbitt, or copper to engage the thread of the member without damage. The head C of the pad may be shaped to engage the thread and the stem is hollowed out at C<1> so that after insertion in an undercut recess B in the screw a blow on the head will cause the end of the stem to spread and prevent unintentional separation of the parts.
Patent GB-840507-A (GB)
Title: Improvements in and relating to fuel injection pumps for internal combustion engines
IPC: F02M59/46
Filed: 1957-03-14
Abstract: 840,507. Fuel injection pumps. KYLE, D. W. E. June 16, 1958 [March 14, 1957], No. 8475/57. Class 102(1). A fuel injection pump comprises a plunger 13 actuated by an air piston 11, loaded by the pressure from the engine cylinder, the plunger delivering fuel through a conduit 19 and past a spring loaded delivery valve 17. A spill valve 14 is provided in the conduit 19 which is held open at the commencement of the discharge stroke by a lever 15 pivoted about an adjustable cam 16, the lever being actuated directly by the air piston 11 to allow the spill valve to close. The delivery valve 17 is opened by the fuel pressure in the conduit 19 against a spring 18 which abuts an adjustable member 21. A lever 22 pivoted at 23 is connected at one end to the cam 16 and carries a screw 25 at the other end which engages the member 21. When the cam 26 is adjusted to allow the spill valve 14 to close earlier, relative to the discharge stroke of the piston, the cam also acts through the lever 22 to increase the loading of the spring 18 thus requiring a greater pressure in the conduit 19 before the delivery valve 17 will open.
Patent GB-878022-A (GB)
Title: Improvements in or relating to convertible chair beds
Inventor: RAMM THEODORE HERTZL
IPC: A47C1/035
Filed: 1959-03-12
Abstract: 878,022. Seats, bed settees. RAMM & SONS Ltd., L. March 11, 1960 [March 12, 1959], No. 8587/59. Class 52(2). In a reclining chair in which foot 16, leg 15 seat 14 and back 13 sections are pivotally connected together, the cross arms of T-shaped links 26, extending in fixed relation to the foot section 16, are pivoted respectively to the leg section 15 and to operating links 27 so that the foot section 16 can be inverted into a position of use on lowering the back section 13 about its pivots 22 to the frame 10. Actuating arms 28 move the sections 15 and 16 in turn into the plane of the seat section 14 and the final motion of the section 16 is assisted by tension springs 32. Springs 30 control legs 29 having abutments 31 which ensure that the legs are maintained in the upright position. Devices to lock the chair in any intermediate position of adjustment are referred to.
Patent GB-645723-A (GB)
Title: Improvements in and relating to low pressure mercury vapour lamps employing fluorescent material
IPC: C09K11/76
Filed: 1948-03-24
Abstract: 645,723. Luminescent materials. EKCOENSIGN ELECTRIC, Ltd., and EVANS, J. N. I. March 24, 1948, Nos. 8589 and 18450. [Class 39 (i)] A luminescent material for discharge lamps comprises calcium, magnesium, aluminium, antimony, fluoro- or chlorofluoro-phosphate, the molecular proportions in relation to 10 mols., phosphorus pentoxide (P 2 O 5 ) being 0.03-4.5 mols., manganous oxide (MnO), 0.3-2.0 mols. aluminium oxide (Al 2 O 3 ), and 3.0-4.0 mols. calcium fluoride of which up to 70 molecular per cent may be replaced by calcium chloride, that proportion of P 2 O 5  not combined with manganese, aluminium or antimony oxides being combined with calcium oxide in the ratio of 3 mols. CaO to 1 mol. P 2 O 5 . Examples in this range give cream-white, pink-white, blue and pink-orange fluorescence. Calcium carbonate, aluminium hydroxide and antimony oxide are mixed with orthophosphorio acid, manganese phosphate, calcium or aluminium fluoride or both added, ground, dried and heated at 1000-1050‹ C. When the chloride is included as calcium chloride, it is heated with other ingredients at 1050‹ C. before adding the fluoride. In one method, calcium phosphate, aluminium phosphate and calcium chloride are heated together under neutral conditions, and manganese chloride, antimony oxide and sufficient phosphoric acid added afterwards with a second heating at 1100‹ C. A third heating may be necessary. In another method, aluminium hydrate, phosphoric acid and calcium chloride are baked, heated before being mixed with calcium fluoride, antimony trioxide, manganese chloride and phosphoric acid, followed by further grinding, baking and firing.
Patent GB-555903-A (GB)
Title: Treatment of finely divided solid materials
IPC: C01B31/08
Filed: 1941-07-08
Abstract: 555,903. Catalytic apparatus; treating solids with gases. CLEVELAND, F. J. (Socony- Vacuum Oil Co., Inc.). July 8, 1941, No. 8605. [Class 1 (i)] [Also in Group XII] The regeneration of finely divided absorbent or catalytic materials by burning off carbonaceous deposits is effected by passing the solid concurrently with an oxygen-containing gas through a treatment zone in close indirect heat exchange with a fluid medium, preferably a molten salt. The treatment zone may comprise a series of tubes 42-47 surrounding an openended tube 48 and enclosed in a chamber 41, which contains the heat-exchange medium, circulated by an impeller 49. The solid is fed from chamber 57 into the gas line 53, and after treatment it is separated from the gas in chamber 61.
Patent GB-1217614-A (GB)
Title: Glazing
IPC: E04D3/08
Filed: 1968-02-22
Abstract: 1,217,614. Glazing bar assemblies. L'ALUMINIUM FRANCAIS. 22 Feb., 1968 [23 Feb., l967], No. 8714/68. Heading E1R. A glazing bar assembly comprises an extruded inverted-T sectioned bar 10 having a web 11 and cross-bar at its lower end provided with an undercut groove 17 for accommodating bolt heads for mounting on a support frame or for accommodating elements of inverted V-section 33, 34, 35 as shown or with hooked ends (Figs. 4 and 5) for supporting lighting fittings or cables &c. or reinforcing strips at intervals along the bar, the other end of the web on top of the bar having a central undercut groove 16 for receiving the mounting screw &c. of an end stop (Figs. 7 and 8) and two lateral recesses 12, 13, which may also open downwardly (Fig. 9) and resilient clips 21, 22 having end portions 211 held in the undercut recesses 12, 13 and circular loops 212, 222 which clamp down on glass panes 50 or overlapping portions of panes 51, 52 which rest on the glazing supports 14, 15 upstanding from the cross bar.
Patent GB-488228-A (GB)
Title: An improved step ladder, trestle and the like
IPC: E06C1/20
Filed: 1937-03-25
Abstract: 488,228. Step - ladders. CHEW, W. March 25, 1937, Nos. 8773 and 8774. Conven. tion dates, March 31, 1936 and Aug. 31, 1936. [Class 20 (ii)] A step-ladder has the supporting struts universally hinged to its upper end and arranged to cross each other, a suitable clamp being utilized at the crossing to secure them in adjusted position. The struts 4 which are arranged crosswise are pivoted at 6 to hinges or pivot-members 5, which are secured to the upper end of the ladder 2, a slidable clamp comprising flanged plates 14 pivotally mounted in a saddle member 15 and a clamping screw 37, being used at the crossing to clamp the struts together. An alternative form of clamp comprising flanged plates and a centre through bolt may be used in which case the struts 4 are slotted at 20 to receive the bolt. Flexible members 24 are used to limit the backward and relative lateral movements of the struts, and, in addition, pivoted links 23 and a slotted bar 21 clamped between the struts at their crossing, and a cross-frame 27 connected by hinged members 26 to the sides of the ladder, may be used to limit the relative lateral spread and the backward movement of the struts respectively. Adjustable metal sleeves 7, Fig. 5, may be provided for the ends of the ladder sides and adjustable side feet 3 may also be used to support the ladder evenly on rough ground. Adjustable feet portions 30 may be clamped to the feet of the struts and when the ladder is used on soft soil these struts are turned into a horizontal supporting position.
Patent GB-182090-A (GB)
Title: Improvements in high vacuum pumps of the aspirator type
IPC: F04F9/00
Filed: 1922-03-27
Abstract: 182,090. Western Electric Co., Ltd., (Assignees of Houskeeper, W. G.). June 20, 1921, [Convention date]. Aspirating-apparatus, ejector.-In order to overcome the objection to mercury-vapour-jet air and gas ejectors, that by reason of the considerable vapour pressure of mercury at room temperatures, a liquid air-cooled trap between the ejector and the vessel to be exhausted is necessary, substitution is made of the vapour of substances having a vapour-pressure at ordinary temperatures of less than 10<-6> m.m. of mercury, which is the usual pressure within a vacuum tube of the pure electron discharge type, and at higher temperatures a vapour-pressure above 10<-3> m.m. of mercury, which is that usually obtained with rough pumps. When lead, bismuth, or tin are used, the rough pump 10 is operated to reduce the pressure to that value, the metal in a chamber 14 is vaporized by an electric heater 18, and the vapour rising in the pipe 12 exhausts air from the bulb 11 by ejector action, being at the same time maintained at slightly above melting temperature by an electric heater 20, the condensed particles returning by gravity to the vaporizing- chamber. If zinc or cadmium is employed, sublimation temperatures below the melting point are chosen, the pipe 12 is not heated during exhausting, but subsequently the heater 20 is used to melt the solid zinc &c. that has condensed on the walls thereof, so that it may return to the vaporizer. Passages 12 and 13 are of pyrex glass and are connected to lead-glass tubing 16 by sleeves of platinum.
Patent GB-103940-A (GB)
Title: Improvements in Lunch Chairs or Combined Chairs and Trays.
Inventor: RUGGLES HORATIO BROWN
IPC: A47C7/00
Filed: 1916-06-22
Abstract: 103,940. Ruggles, H. B. June 22, 1916. Seats combined with tables. - A combined tray or table and seat, for use in dairies hotels, schools, &c as a luncheon or writing-table and seat, comprises a saddle-shaped seal 4 with an extension 15, to which are connected uprights 16 supporting the tray or table top 10 in front of the seat. The uprights 16 are curved and spread at their upper ends and so form supports for a hat or other article, and are secured in position by nuts 17. The tray has an upwardly projecting rim. Fixing furniture to floors.-The cylindrical seat support 5 is secured to the floor by screws, or by a block 13 expanded by a key on a rod 9, which also tightens a conical wedge 11.
Patent GB-684541-A (GB)
Title: Process of inhibiting the degradation of color photographs
Inventor: MACKEY E SCUDDER
IPC: G03C7/30
Filed: 1951-04-16
Abstract: 684,541. Colour photography. GENERAL ANILINE & FILM CORPORATION. April 16, 1951, No. 8823/51. Class 98 (ii). Colour degradation and staining on storage of multi-colour photographic images are inhibited by rinsing, after the final washing operation, in an aqueous solution of an addition product of formaldehyde and a urea of formula wherein R, R 1  and R 2  each represent hydrogen or lower alkyl, and wherein R 2  is always hydrogen when both R 1  and R 2  are lower alkyl. The materials so treated may be multilayer negative, positive or reversible film or white printing material as on a paper base and may contain azo, azine, azomethine, indophenol or quinon- imine dyes produced as from colour formers in the emulsions or in developing solutions. Formaldehyde may be reacted with urea, N-methylurea, N-ethylurea, N-propylurea, N-butylurea, N,N-dimethylurea or N,N<SP>1</SP>-dimethylurea; and reaction products N-methylolurea, N,N<SP>1</SP>-dimethylolurea, N - methylolmethylenebismonoethylurea, N<SP>1</SP> - methylol - N,N - dimethylurea, N - methylol - N,N<SP>1</SP> - dimethylurea or N,N<SP>1</SP> - dimethyluron may be used as in 0.5 to 20 per cent solution for 1 to 10 minutes for rinsing these materials. Four examples are directed to the process as applied to multilayer positives on white opaque film and paper bases and give comparisons after heat, humidity and storage tests with similar but untreated specimens.
Patent GB-215329-A (GB)
Title: An improved method and apparatus for use in electric resistance welding, sheet metal articles and the like
IPC: B23K11/08
Filed: 1924-04-08
Abstract: 215,329. Schaer, C. April 30, 1923, [Convention date]. Welding.-In electric resistance welding relative motion is produced between the work and the electrodes in addition to and during the advance or feeding movement in order to heat electrically an increased area of work adjacent to the welding point and thus avoid the formation of holes in the work or injurious changes of structure, the passage of the current being continuous throughout the operation. This additional motion between the work and electrodes may be communicated either to the electrodes or to the work or to both, and' may consist of a reciprocating or reciprocating progressive movement in the direction of the seam or a rotary or oscillating movement across the seam; the feed movement may be communicated either to the work or to the electrodes. The electrodes 3, 4 may be carried by arms 8, 9 pivoted to a frame 7 and pressed together by a spring 12 to follow uneven places in the work 1. The feed movement is given either to the work or the electrodes by rollers 13, 14. The electrodes may be fixed on their arms 8, 9 or may be ball jointed so that they may rock thereon, or the arms mav be secured together and rocked laterally on a pivot. In another form the electrodes may be mounted in the manner of a chair castor so that they may be rotated across the seam. The work mav be rotated by rollers to weld a circular or oblique seam. Two or more pairs of electrodes may be used. Various ways of carrying out the process are described.
Patent GB-741839-A (GB)
Title: Improvements in or relating to ball point pens
IPC: B43K7/00
Filed: 1953-03-31
Abstract: 741.839. Reservoir pens. FERBER CORPORATION. March 31, 1953, No. 8938/53. Class 146(3) A ball-point pen has a barrel 14a of transparent or translucent material, a tapered portion at each end of the barrel, a writing tip 12 at one end. a closure member 16a at the other end, both tip and closure member being tapered to suit the barrel, and a roughened surface 11 resembling screw-threads formed around the barrel near the end containing the tip 12. As shown, the ink 14b is contained in the bore of the barrel, but it may be contained in a removable metal &c. reservoir contrasting in colour with that of the barrel. The tip 12 and member 16a may be of metal, and coloured. A coloured metal cap with attached clip is provided. Reference has been directed by the Comptroller to Specification 573,747.