baber/WOPTO huggingface dataset:
Patent GB-1379365-A (GB)
Title: Liquid crystal compositions
IPC: C11D7/26
Filed: 1973-02-20
Abstract: 1379365 Liquid crystal compositions HUGHES AIRCRAFT CO 20 Feb 1973 [22 Feb 1972] 8294/73 Heading C4X [Also in Divisions H3-H5] A liquid crystal composition comprises a nematic liquid crystal material doped with one or more compounds selected from tetracyano-pbenzoquinone; (2,4,7 - trinitro - 9 - fluoroenylidene) - malonitrile; 2,2,6,6 - tetramethyl- 4 - piperidone - 1 - oxyl; 2,2,5,5 - tetramethylpyrrolidene - 3 - carboxamide - 1 - oxyl; 1,1 - diphenyl - 2 - picryl hydrazyl; butylphenol; tolualdehyde - 2,4 - dinitrophenyl hydrazone; salicylic acid; p - cyanophenol; p-nitrophenylacetic acid; 4-nitro-2-hydroxybenzylidene-p-n-butylaniline ; p-nitroaniline; Squarylium dye III and galvinoxyl  The nematic material may be a single compound, or a mixture of such compounds, examples of both types being given. When used in an electro-optic cell exhibiting dynamic scattering, the doped materials have improved rise and decay times. The composition may also include a cholesteric material, e.g. cholesteryl non- anoate, whereby the scattering state remains for some time after removal of the applied voltage. The dopant gives an extended lifetime to this scattering state which may be produced by D.C. or low frequency A.C. voltages and erased by high frequency A.C. The cell may include a photo-conductive layer, e.g. ZnS, CdS.
Patent GB-1499305-A (GB)
Title: Tubular assembly which is at least in part of metal construction
IPC: H02G9/06
Filed: 1976-03-02
Abstract: 1499305 Underwater pipelines KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE AG 2 March 1976 [17 March 1975] 08296/76 Heading F2P A tubular assembly for, e.g. sub-aqueous electric cables, pipes, formed at least in part of metal and comprising a tubular helically corrugated sheath 2 is characterized by the provision of an elongate member 5 carried in the corrugation troughs and having a cross-sectional area which is constant, and specific gravity chosen such that the weight of the assembly with the profile exceeds the buoyancy of the sheath alone in water. Preferably two concentric helically corrugated metal tube members 1, 2 sandwich an insulating layer 3 of polyurethane foam the outer tube 2 carrying an elongate member 4 comprising a winding of lead wire 5 in a sheath of synthetic resin 6 and surrounded by a further sheath 7 of synthetic resin, e.g. polyethylene. A reinforcing layer may be included at the radially inner side of sheath 7.
Patent GB-430451-A (GB)
Title: Improvements in ceiling roses for electric wiring installations
IPC: H02G3/20
Filed: 1934-03-17
Abstract: 430,451. Binding - posts. BROADBENT, D. L. J., 14, Duke Street, Southport, Lancashire. March 17, 1934, No. 8424. [Class 38 (i)] The terminal posts 6 of a ceiling - rose are provided with metal fins or extensions 7 provided with means such as a V-shaped slot 8 in which the ends of the wire flex 10 are held in wedging engagement. The fins 7 may be mounted with one side abutting against a central insulating partition 5 and with their free ends opposite holes 12 in angled extensions 5<a> through which the flex passes. In modifications, the fin is doubled back upon itself with the free end of the doubled-back portion bent up or is provided with a stampedup tongue and the end of the flex may be looped.
Patent GB-609625-A (GB)
Title: Treating pelts
IPC: C14C11/00
Filed: 1946-03-19
Abstract: 609,625. Treating woolled skins. HUNNAM, R. E., JACKSON, C. M. and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 19, 1946, No. 8470. [Class 76] Woolled lambskins or sheepskins are moistened, e.g. by immersion, brushing, or spraying, with an aqueous solution of not more than 40 per cent strength of a watersoluble urea-formaldehyde condensation product, and then forthwith the moistened skins are ironed. The wool is permanently altered so that for instance durable imitations of the furs of rare animals are obtained. The aqueous solution may contain additional formaldehyde, an acid substance such as ammonium dihydrogen phosphate as a catalyst, and a wetting agent. A preliminary treatment with formic or acetic acid followed by ironing may be given to promote elongation and straightening of the fibres.
Patent GB-1499941-A (GB)
Title: Flow control valve with internal rate of flow feedback
IPC: F15B13/044
Filed: 1976-03-03
Abstract: 1499941 Fluid-pressure servomotor systems SANDERS ASSOCIATES Inc 3 March 1976 [17 March 1975] 08529/76 Heading G3P Pilot valves 58, 58' having a supply Pp and a return line P R  provide fluid-pressure signals to chambers 28, 29 at opposite ends of a valve 13 centred by springs 31, 32 and controlling communication between load ports 16, 17 and further supply and return lines P, R; the connections 33, 34 to the line R each contain a non-return valve 38, 39 downstream of a passage 73, 74 through which negative feedback is applied to the pilot valves. When the signals applied by a torque motor 55 to the pilot valves are small the springs 31, 32 prevent movement of the valve 13 while the valves 38, 39 are also loaded to remain closed until a threshold feedback pressure is reached. Once the load ports have been opened, however, larger changes in feedback pressure occur for lower flow-rates than for higher flow-rates to achieve more accurate control at low input signal levels. In a modification, the valve 13 is of the open-centre type and provides a by-pass for the non-return valves when it is in its central position, each by-pass including an axial  bore (88) Fig. 4 (not shown) inside the valve 13, a passage (73), a groove (86) in the valve and a passage (15 ).
Patent GB-551876-A (GB)
Title: Improvements in rotary hooks for well drilling
IPC: E21B47/00
Filed: 1942-06-22
Abstract: 551,876. Hooks. NATIONAL SUPPLY CORPORATION, and OIL WELL ENGINEERING CO., Ltd. June 22, 1942, No. 8539. Convention date, Aug. 1, 1941. [Class 89 (ii)] [Also in Group XVIII] In a rotary hook for well drilling having incorporated therein an hydraulic weight indicator, signalling means are provided for warning the operator if depletion of the hydraulic fluid causes a portion of the load to be supported by a metal to metal contact. The loadcarrying shank 11 of the hook 12 extends through a housing 30 and is supported by means of a nut 19 and collar 26 resting upon a spring 27. The housing 30 has a flange 49 forming an annular hydraulic cylinder 47 the piston 50 of which is fixed to a crosshead 55 pivoted in a bail 57. Relative rotation between the crosshead 55 and housing 30 is prevented by T-bars 59 which also overhang the housing and limit its upward movement. Ball bearings 28, 31 facilitate the rotation of the hook and its attached parts. The shank 11 may be locked against rotation, or liberated, by hand levers 45, 46 as described in U.S.A. Specification 2,158,372. When it is desired to replace the piston packing rings 53, a cap 39 and split ring 32 are removed, thus allowing a locking ring 33 to fall from toothed engagement with the nut 10 after which the locking ring may be rotated to permit the nut to descend therethrough. A closure cap 29 is then detached, and the shank 11, spring 27 and nut 19 may be withdrawn in a downward direction as a unit. After removal of the T-bars 59 the housing 30 may be raised to give access to the piston packings. The weight in suspension on the hook is indicated on a gauge connected by a flexible tube to the cylinder 47. To warn the driller of a deficiency of fluid in the cylinder, the consequent descent of the housing 30 pushes up a venting valve and the pressure gauge suddenly registers zero. The cylinder is replenished by a hand pump after first temporarily closing the venting outlet by a manually operated cock. In a modification, the use of the manually operated cock is avoided by providing automatic means for closing the vent. Excessive pumping of fluid into the cylinder is avoided by the opening of a relief valve 9,3 operated by contact with one of the T-bars 59. The hook is closed by a latch 13 locked by a pivoted trigger 15 urged towards the locking position by a spring-loaded plunger 16. U.S.A. Specification 2,158,373 also is referred to.
Patent GB-790207-A (GB)
Title: Improvements in or relating to fairleads
IPC: B66D3/06
Filed: 1954-03-24
Abstract: 790,207. Fairleads. MUNSTER SIMMS & CO., Ltd., and EVES, F. S. Feb. 21, 1955 [March 24, 1954], No. 8556/54. Class 78 (5). In or for a fairlead, a drum-like member comprising inner and outer shells, the inner shell 2 forming a rotatable housing for the bearings 4, and the outer shell 3 being removably secured (as by screws 12) to the inner shell and forming the rope-engaging portion of the fairlead.
Patent GB-1138274-A (GB)
Title: Therapeutic respirator
IPC: A61M16/00
Filed: 1967-02-22
Abstract: 1,138,274. Respiratory appliances. LISTONFLETCHER, Inc. 22 Feb., 1967 [4 March, 1966], No. 8565/67. Heading AST. [Also in Division B2] A respirator comprises a body part 15 having a mouthpiece 19 sized for insertion into mouth of a user, and an ejector 17 and conduit 63 whereby fluid under pressure may be supplied to the respirator, the fluid passing through the ejector and inducing atmospheric air into the body part and through the mouthpiece to the user. As shown, the fluid (air) under pressure from a source 73 is dispensed in pulses from a control device 13 to a nozzle 57 in the ejector 17, atmospheric air being induced into the respirator through an inlet 49 and passages (65) extending around the nozzle. The inlet 49 also allows the user to exhale through the respirator to atmosphere. The respirator includes a conduit 59 supplying air to a nozzle 31 which sprays a medicament liquid 35 into the airstream. The control device 13 supplies the air from the source 73 to the respirator in a series of pulses, air passing from the source 73 into the conduits 77 and 63 also bleeding through a passage 89 to a space 87 where it moves a diaphragm 83 to close a valve 75 to terminate the pulse. The next pulse is initiated by the user attempting to inspire, the decrease in pressure being communicated through a conduit 109 to a space 99 where a diaphragm 95 causes a valve 105 to relieve the space 87 and allow the valve 75 to open. A valve 91 allows the amount of air supplied in each pulse to be adjusted. In a similar embodiment, Figure 3 (not shown), not provided with a control device 13, the user regulates his air supply by opening or closing an air vent (119) with his thumb. When the vent is open the air under pressure from the conduit 63 passes to atmosphere without inducing air into the respirator or operating the spray device. The respirator may be of rubber or moulded plastics material and is designed so that it may be held in the hand of the user.
Patent GB-199786-A (GB)
Title: Improvements relating to tennis racket handles
IPC: A63B49/08
Filed: 1922-03-24
Abstract: 199,786. Ford, S. G. March 24, 1922. Handles.-The handle of a tennis racket is provided with an india-rubber cap shaped to fit the handle. The sides of the cap are inclined inwards and diminish in thickness from the base upwards as shown.
Patent GB-526543-A (GB)
Title: Method of and means for attaching sockets to airscrew blades
IPC: B64C11/04
Filed: 1939-03-17
Abstract: 526,543. Airscrews. HILLS & SONS, Ltd., F., and SYKES, N. March 17,1939, No. 8573. [Class 114] A method of attaching airscrews to sockets in which the aerofoil section of the blade is in two or more parts so that a onepiece socket is introduced over the tip of one or more parts and the remaining parts are fixed subsequently to complete the aerofoil section. An airscrew blade 1, Fig. 1, manufactured from boards 2 composed of laminated veneers has a leading edge component 3 with root 4 over which tapered socket 5 fits, and also a, trailing edge component 6 which is then fixed to component 3. A cylindrical root 4, Fig. 4, may have a shoulder 8 engaged by a correspondingly shaped socket 7 and may have a key 9 to prevent rotation. The blade may be assembled from boards in block form, the ends of which are cut to form a root after which additional boards are applied and then machined to aerofoil section. Some of the boards may be cut so that a hollow blade is formed when they are assembled. Specification 526,600 is referred to.
Patent GB-1102404-A (GB)
Title: Improvements in or relating to screw driving tools
Inventor: FLETCHER ALAN THOMAS
IPC: B25B15/00
Filed: 1964-02-29
Abstract: 1,102,404. Screwdrivers. G. K. N. SCREWS & FASTENERS Ltd. 15 Feb., 1965 [29 Feb., 1964], No. 8586/64. Addition to 1,006,509. Heading B4W. A driving tool 48 adapted for use with the recessed head screw fastener of the parent Specification (see Division F2), comprises a central core 50 having wings 51 radiating therefrom, the side faces 54, 55 of the wings being substantially parallel with the central longitudinal axis of the tool but slightly asymmetrical in relation to associated vertical planes M1-M1 and M2-M2 passing through the wings and lying medially between the two side faces thereof. Flutes 53 having corner angles of approximately 90 degrees are formed between adjacent wings 51. The tool when inserted in the fastener recess of the parent Specification provides a clearance of between 0À0010 inches and 0À0005 inches. The driving face 54 of each wing is inclined at an angle of about 20<SP>1</SP> of a degree towards the associated vertical medial plane M1-M1 or M2-M2, the fastener removing face 55 being inclined at an angle of about 2 degrees to said plane.
Patent GB-1211945-A (GB)
Title: Electric furnaces
Inventor: VOLOKHONSKY LEV AVROMOVICH
IPC: F27B5/04
Filed: 1968-02-22
Abstract: 1,211,945. Casting machines. L. A. VOLOKHONSKY, B. B. PELTS, J. V. ZABOLOTNY, V. I. ARTAMONOV, L. M. IVANOV, G. S. NOVITSKY, M. D. SELTSER, and S. P. BELKOV. 22 Feb., 1968, No. 8587/68. Heading B3F. [Also in Divisions F4 and H5] A vacuum or inert gas filled furnace comprises a tiltable metal melting crucible 1, hermetically closed by a cover 2 supporting a consumable electrode 9 or other electric heating means, and one or more pouring chambers 15 hermetically connected to the melting crucible 1. Chambers 15 accommodate rotary tables 16 with moulds into which molten metal is poured from the pouring spout 3 of crucible 1 via a pouring trough 17. Around the crucible 1 is a water-cooled jacket 11 and a solenoid 12 for stirring the molten metal. The crucible 1 is connected to an exhausting device 7 or to a source of protective gas. The crucible 1 is mounted on trunnions 4 for turning by means of a drive mechanism 5 and a gear train 6. Instead of a consumable electrode 9, the heating may be by an electron-beam gun or a plasma torch, and a charge for melting can be loaded into the crucible.
Patent GB-323428-A (GB)
Title: Improved motor vehicle hoods and the like
IPC: B60J7/12
Filed: 1929-03-18
Abstract: 323,428. Douglas, E. J. March 18, 1929. Hoods; weather screens. - A hood for road vehicles comprises a casing fixed behind one of the seats to which are hinged members forming part of the hood. These members d are raised from the casing by springs g and crossed arms f as soon as the lid of the casing is released. The members d have hinged thereto members t adapted to be clipped to the windscreen and the back and top are covered with fabric side screens w are connected to the members d by flexible strips to allow them to be folded on to the back part of the hood while the weather screens when in position are fastened by fasteners z to the body sides.
Patent GB-301260-A (GB)
Title: Improvements relating to light reflecting devices for cycles and the like
IPC: B62J6/20
Filed: 1928-03-22
Abstract: 301,260. Macnab, J., and Osbaldiston, E. March 22, 1928. Addition to 263,414. Reflex lights.-A light - reflecting glass element A consists of a number of united frustroconical reflectors, as in the parent Specification, each having a convex refracting surface a and a concave reflecting surface b, the latter being situated at or near the focus of the refracting surface and of larger diameter than the surface a. The two surfaces have a common centre of curvature. The reflector is used for cycles, signs, &c.
Patent GB-463220-A (GB)
Title: Manufacture of water-soluble heterocyclic mercury compounds
IPC: C07F3/14
Filed: 1936-03-24
Abstract: Water-soluble heterocyclic mercury compounds are prepared by treating a pyridine o-dicarboxylic acid allyl-imide with mercuric oxide or a mercuric salt and converting the product into a water-soluble salt. Examples are given of the mercuration of pyridine-2 : 3 and 3 : 4-dicarboxylic acid allyl-imides and the solution of the products in caustic alkali.  Pyridine-2 : 3 and 3 : 4-dicarboxylic acid allylimides are obtained by heating the carboxylic acid anhydrides with allylamine in benzene solution.
Patent GB-710679-A (GB)
Title: Die casting and injection moulding machines
Inventor: SMITH STANLEY
IPC: B29C45/53
Filed: 1952-04-07
Abstract: 710,679. Dashpots. E.M.B. CO., Ltd. March 19, 1953 [April 7, 1952], No. 8805/52. Class 108(3) Hydraulic control means for a die-casting or injection - moulding machine, comprises a cylinder h having ports x and k at each end and an intermediate port m, a piston g adapted to slide in the cylinder and control the port m, a liquid reservoir c in communication with the cylinder through one of the end ports x, a bypass j between the other two ports (k, m), an adjustable valve p in the bypass j, a non-return valve n between the by-pass j and the port m, and a second non-return valve <q> between the by-pass j and the reservoir i. A non- return valve v is disposed between the reservoir i and the cylinder h adjacent the port x. In operation, compressed air is applied to the L.H. side of a piston b rigid with the plunger, Fig. 1 (not shown), of the die of the machine, and rigid with the rod f of the piston g. Initial movement of the pistons g, b is restricted by flow through port k and orifice t to the reservoir i. When the piston has passed to the right of the port m, an increased flow can occur via the port n at a rate determined by the adjustment of the valve p. On the return stroke, liquid forced through the port x returns to the other side of the piston g via the non- return valve q and port k.
Patent GB-474571-A (GB)
Title: Improvements in welding machines
IPC: B23K11/31
Filed: 1937-03-25
Abstract: 474,571. Electric welding; electric switches. GENERAL MOTORS CORPORATION. March 25, 1937, No. 8824. Convention date, March 30, 1936. [Class 83 (iv)] [Also in Group XXXVII] In an electric welding-machine having means for closing the electrodes in timed relation with the current control switch, the control lever which initiates the operation of the electrodes and switch is held in operative position by a fluid-operated device until the switch is opened. The trigger 4 is pressed down by the operator to open the valve 5 so as to allow air to pass through slide valve 20 and past valve 5 into the cylinder 9 to operate the movable electrode 1 and into the cylinder 10 to operate the switch 14. At the same time pressure enters the cylinder 8 to hold down the trigger. When the cam 15 on the piston rod 13<1> engages contact 14 the welding- switch is closed for a period. When the cam passes behind the roller 16, the switch is opened by a spring 17. Further movement of the piston causes the collar 27 to engage nuts 18 to reverse the slide valve 20, whereupon the rear of the piston 13, cylinder 8 and rear of piston 3 are connected to the atmosphere and fluid supplied to front of cylinder 9 to return the electrode 1. The spring 24 then returns the piston 13, the cam snapping past the switch and the collar 27 engages the nuts 28 to return the valve 20 and so cause the valve 5 to be closed. A complete cycle of operations may thus be effected even if the operator releases his finger from the trigger. If the operator maintains pressure on the trigger a series of cycles are performed until the trigger is released, when the machine will stop at the end of a given cycle of operations.
Patent GB-125803-A (GB)
Title: Improvements in Sparking Plugs for use with Internal Combustion Engines.
Inventor: BARROWS JOSEPH ERNEST
IPC: H01T13/38
Filed: 1918-05-29
Abstract: 125,803. Barrows, J. E. May 29, 1918. Sparking-plugs. - A tubular spigot 3 is interposed between inner and outer sets 7, 9 of mica washers, the outer end 11 of the casing being closed over the flange 5 of the spigot, which may be made from a length of tubing flanged over, or pressed from a disk of sheet metal, or turned from a solid bar.
Patent GB-212137-A (GB)
Title: Improvements in or relating to talking machines and the like
IPC: G11B3/46
Filed: 1923-03-28
Abstract: 212,137. Columbia Graphophone Co., Ltd., and Forse, W. T. March 28, 1923. Sound-boxes, mounting; sound-box cases.- The tube for connecting a. sound-box to the tone-arm is flexibly mounted on the casing bv means of a metal spring or springs. As shown, a spring washer g is connected to the casing a by screws f and distance pieces h and to a flange i on the connecting-tube by screws f<1> and distance pieces h<1>, the fastening devices f and f<1> being suitably spaced. A rubber ring l is placed within the central hole of the washer and is lightly clamped between the connector flange i and the casing to make an air-tight joint. In place of the spring washer, helical or spiral springs, or flat springs may be employed.
Patent GB-1465423-A (GB)
Title: Tyre press and mould leakage control-
IPC: B29C35/02
Filed: 1975-03-04
Abstract: 1465423 Moulding tyres GOODYEAR TIRE & RUBBER CO 4 March 1975 [1 April 1974] 8879/75 Heading B5A In a process for curing a tyre in a mould a fluid medium is admitted to the tyre cavity at a first pressure during a curing cycle and leakage of said medium from the cavity is tested by continuously monitoring the pressure in the cavity to detect a predetermined second pressure therein lower than the first pressure, and a signal is generated in response to the second pressure, which signal is applied to prevent loading of another tyre into the mould. The tyre cavity may first be supplied with steam at a pressure lower than the first pressure, and then an inert gas is admitted at the first pressure. A tyre cavity 12 is supplied with an inert gas via valve 22 and line 20; the cavity has a drain line 14 and valves. The valve 22 includes a valve positioner 23 operated in response to a controlled pressure air supply in line 24 governed by a timer. A further air supply line 26 is connected to solenoid operated valves SVG1, SVG2 controlling a valve SVG and communication between an air pressure line 28 and the position 29 of a test valve 30 located between the valve 22 and the inert gas source. Pressure responsive switches PS50, PS51 and PS52 are arranged as shown and the system is controlled by a gas leak monitoring circuit, not shown. Where there is complete pressure loss in the tyre cavity the normally open switch PS52 closes to latch a relay causing closure of valve 30 and to effect cut-off of all gas flow to the mould, and also prevents loading of a fresh tyre. In a second mode of operation, when testing for gas leakage, a leak test timer is operated to cause valve SVG to close valve 30 to isolate the cavity and the lines connected thereto. If pressure decreases to a preset value during the timing period the switch PS51 is closed and a relay latched to prevent the entry of a fresh tyre. If switch PS51 is not closed during this period the valve SVG2 is energized and valve 30 re-opened. When the appropriate relay is latched by gas leakage a further timer is operated to extend the cure time. Unlatching of the relays is effected manually by a key whereby the valve 30 is opened.