baber/WOPTO huggingface dataset:
Patent GB-692584-A (GB)
Title: Reinforcements for prestressing concrete
IPC: B28B23/04
Filed: 1950-10-23
Abstract: 692,584. Reinforced concrete. BAKKER, J. Oct. 23, 1950 [Oct. 25, 1949; Jan. 4, 1950; Sept. 8, 1950], No. 25787/50. Class 20(iv) A reinforcement 1, which is stressed before insertion in a mould for making: prestressed concrete articles, e.g. beams, comprises a series of metal, e.g. steel strips 2 and 3 which are connected together at their ends by releasable clamps 4, the strips 2 being provided with anchors (not shown), and placed under a tensile.stress while the strips 3 have no anchors and are placed under a compressive stress. The clamps 4 comprise upper and lower plates- 4b and 4a connected together by bolts 5. In use the reinforcement is placed in a mould such that the heads 6 of the bolts 5 are accessible from the outside and when the concrete in the mould has set the lower plate 4a is removed allowing the strips under compression to expand in Spaces left free at least at one end and the strips under tension to impart their tension to the concrete. A secondary reinforcement 7 may be clamped to the primary reinforcement 1, a wrapping of metal tape 9 keeps the strips together and a wrapping of oiled paper prevents corrosion and adhesion with the concrete. The strips 3 may be withdrawn or left in theconcrete in which case they may be reclamped to the tensile stress elements while the concrete is still in the mould or in a "no load" position. In a modification the strips 2 may be made wider than the strips 3 and grooves or recesses be provided in their edges for bonding with the concrete. A modified clamping and releasing device is shown in Fig. 3 and comprises plates 12 and 13 bolted together and co-operating with a wedge 15; a fusible lining, e.g. of sulphur is attached to the lower plate 13 and contains an electrical heating element connected to a current supply through the wires 17 which enables the strips to be released by fusing the lining.
Patent GB-153890-A (GB)
Title: Improved manufacture of vulcanized caoutchouc
IPC: C08K5/00
Filed: 1920-09-07
Abstract: 153,890. Goodyear Tire & Rubber Co., (Assignees of Scott, W.). Nov. 10, 1919, [Convention date], Vulcanizing materials and compositions. - An aryl substituted thio urea containing one or more alkyl groups, one of which is in ortho position to the nitrogen of the thio urea is used as an accelerator in the vulcanization of rubber. The accelerator is the product of the reaction of carbon bisulphide on an ortho alkyl substituted aromatic amine e.g. ortho toluidine. In an example, a mixture of 50 parts of rubber, 45.5 parts of zinc oxide, 3.5 parts of sulphur, and 1 part of di-ortho-toluyl-thio-urea is vulcanized by steam at a pressure of 40 lb. in 10 minutes.
Patent GB-700858-A (GB)
Title: Improved hand tool for use in applying paint, distemper or the like on surfaces
Inventor: MOSTYN EDWARD
IPC: B05C17/02
Filed: 1950-10-24
Abstract: <PICT:0700858/III/1> <PICT:0700858/III/2> A hand tool for applying paint, distemper and the like to walls and other sufaces comprises a roller having an absorbent tread which consists of a fleecy wool skin cut on the cross (at 5a in Fig. 3) and made into a sleeve which engages over an open-ended cylinder rotating about an axle, the sleeve having a push-fit so that it can be removed from the cylinder for cleansing.  The fleecy wool skin (Fig. 1) fits on to a cylinder 6 mounted for rotation about a rod 2 by means of axially bored end cups 7 and 8 which are flanged at 9.  The rod 2 is bent outside the cylinder to form a handle 3, and is upset at 10 to form, with a washer 11, an abutment for the end cup 7.  Cup 8 is tightened in position by a nut 12 screwing on the threaded end of rod 2.
Patent GB-903964-A (GB)
Title: Offset-litho printing
Inventor: WHITEHEAD JOHN LINDSAY
IPC: B41N1/00
Filed: 1959-07-29
Abstract: 903,964. Printing-surfaces. IMPERIAL CHEMICAL INDUSTRIES Ltd. June 8, 1960 [July 29, 1959], No. 25995/59. Class 100 (2). [Also in Group VIII] An offset-litho printing paper mat is coated or impregnated with an organopolysiloxane resin over the whole of its surface or over only part thereof. The resin may be applied by dipping the mat in an aqueous emulsion or in a solution in an organic solvent and excess liquid then removed by passing the mat between a pair of rolls. The organo groups in the resin, which may all be alike or not, may be alkyl groups such as methyl or ethyl groups, aryl groups such as phenyl or tolyl groups, or unsaturated groups such as vinyl or allyl groups. A suitable organopolysiloxane may be prepared by co-hydrolysis and condensation of a mixture of methyltrichlorsilane and dimethyldichlorsilane.
Patent GB-1355256-A (GB)
Title: Photopolymerisable compositions
IPC: H05K3/10
Filed: 1971-04-19
Abstract: 1355256 Photopolymerizable compositions E I DU PONT DE NEMOURS & CO 19 April 1971 [2 April 1970] 26045/71 Heading C3P [Also in Division G2] A photopolymerizable composition comprises an organic solvent having the following other constituents dissolved therein: (a) 5- 85% by weight of a solid organic noble metal (i.e. ruthenium, osmium, rhodium, iridium, palladium, platinum, silver or gold) compound; (b) 5-30% by weight of at least one photopolymerizable compound, this compound, or if more than one such compound is present at least 50% of these compounds, being provided by one or more polyfunctional (i.e. having at least two unsaturated groups) acrylates derived from polyols in which the hydroxyl groups are separated by at least three atoms; and (c) a solid organic sensitizer. The composition may also contain (d) up to 60% by weight of one or more solid organosulphur compounds; and/or (e) up to 50% by weight of a solid flux; and/or (f) up to 15% by weight of a solid polymeric ester, (a) may comprise one or more of the pinene mercaptides of platinum, palladium, gold, silver, ruthenium, rhodium, osmium or iridium. The polyfunctional acrylate (b) may be a di-, tri- or tetra-acrylate or a mixture of two or all thereof, (c) may be tertiary butyl anthraquinone, benzoin methyl ether or a mixture thereof, (d) may be a sulphurized damar resin, (e) may be rhodium, bismuth or vanadium resinate or a mixture thereof. Reference has been directed by the Comptroller to Specification 1,260,440.
Patent GB-641267-A (GB)
Title: Improvements in electric safety switches or cut-outs for motor vehicles
IPC: H01H29/22
Filed: 1947-09-26
Abstract: 641,267. Gravity switches. SIMS, T. W. Sept. 26, 1947, No. 26100. [Class 38(v)] A safety switch for a vehicle renders the ignition circuit inoperative should the vehicle overturn or tilt unduly. It comprises a block constructed mainly from layers of insulating material. The layer C has a conical hole which forms a chamber for mercury E, the top of the chamber being covered by a baffle plate 3 having perforations F. Above the baffle plate is a plate G with a hole H and from this hole passages J extend through an insulating plate 4, the head K of a contact screw L and an insulating plate M to an earthed metal fixing plate 5. The contact screw L may be connected to the ignition circuit so that the tilting or overturning of the vehicle causes the earthing of the circuit when the mercury runs out of the chamber and fills a passage or passages J, so interconnecting screw L and plate 5. One of the passages J extends through the plate 5 and is used for filling purposes; it is closed by a plate N which is secured by a nut P. In a modification, Figs. 7-13 (not shown) the baffle plate is omitted and vertical and diagonal cross passages enable the mercury to interconnect metal plates when the vehicle is tilted. Specification 297,769, [Class 38(v)], is referred to.
Patent GB-1535818-A (GB)
Title: Gas discharge display panel fabrication
IPC: H01J17/16
Filed: 1976-06-23
Abstract: 1535818 Gas discharge display panels INTERNATIONAL BUSINESS MACHINES CORP 23 June 1976 [7 July 1975] 26114/76 Heading C1M [Also in Division H1] A gas discharge display panel is made by:-(a) placing two glass plates separated by a frame of sealing glass in a hermetic oven; (b) evacuating the oven and then introducing a gas which is dry CO 2 - free air, N 2 , an inert gas or inert gas mixture; (c) heating to above the transition temperature but below the sealing temperature of the sealing glass (e.g. 420-460 C.); (d) evacuating the oven and then maintaining therethrough a flow of gas as in (b); (e) heating to a temperature sufficient to seal the plates (e.g. 480-520 C.); and (f) maintaining said temperature until the seal is completed (e.g. for 1 hour). Step (b) may comprise successive evacuation and gas introduction cycles at increasing pressure, until the pressure reaches 20 torr. Steps (b) and (c) may be simultaneous. Preferably the pressure is raised to 1 atmosphere in step (d). The panel-making procedure may be completed by:- (g) cooling the sealed panel (e.g. to 300 C.); (h) evacuating the oven and introducing the gas with which the panel is to be filled (e.g. a Ne-Ar mixture); and (i) cooling until outgassing is completed, adjusting the gas pressure to that required in the panel, and sealing the filling tube of the panel. The gas with which the panel is filled may also be employed in steps (b) and (d).
Patent GB-463067-A (GB)
Title: Improvements in refractory bodies and materials and process for making same
IPC: C04B35/18
Filed: 1935-09-21
Abstract: Refractory bodies consisting substantially of crystals of mullite in a glassy matrix are made by firing an alumina-silica mixture, with an alumina-silica ratio of at least 2 and containing at least 4 per cent of titanium dioxide, at below 1770 DEG  C., preferably above 1500 DEG C.  As the percentage of titanium dioxide is increased the mullite crystals become larger, and as the alumina-silica ratio is increased the proportion of mullite crystals increases.  The body may be made froma prefired grog and an unfired binder, both composed according to the invention, or from a grog of natural or artificial mullite or sillimanite and a binder composed according to the invention.
Patent GB-689887-A (GB)
Title: Improved hardness tester
IPC: G01N3/42
Filed: 1951-11-09
Abstract: 689,887. Hardness testers. LEITZ GES., E. Nov. 9, 1951 [Nov. 16, 1950], No. 26259/61. Class 106 (ii). In a hardness tester of the type shown in Fig. 1 and comprising a support 1 carrying a movable arm 2 with a hardness tool holder 6 and a weight table 4 supporting a weight 5, the holder 6 is supported by yieldable means in the form of springs 7. Fig. 2 shows a crosssection of the holder 6 in which the hardness tool 11 is held in a member 10 resiliently mounted within the holder 6 by springs 7. The top ends 9, of the springs are fastened to the member 10 and the bottom ends 8, of the springs are fastened to the holder 6. In a modification shown in Figs. 4 and 5 two sets of springs 12, 14 support the member 10 via an intermediate piece 13. The two sets of springs 12 and 14 are disposed in planes at right angles to one another. It is stated that by means of the resilient mounting described above, small deflections of the supporting arm 2 caused by the weight 5 do not cause errors when the tool enters the test-piece and the arm 2 is relieved of the load of the weight 5.
Patent GB-1470153-A (GB)
Title: Suction-irrigator
IPC: A61M27/00
Filed: 1975-06-20
Abstract: 1470153 Suction-irrigator STEWART RESEARCH Inc 20 June 1975 [25 June 1974] 26273/75 Heading A5R A suction-irrigator comprises a liquid delivering tube 12 connected by a resilient connector 32 to a liquid supply tube 24, and a vacuum applying tube 14 connected by connector 32 to a vacuum supply tube 26, the delivery and applying tubes 12 and 14 having adjacent work ends 16 and 24 respectively, there being a resilient valve 36 in the liquid supply path of the connector operable by external finger pressure which opens a slit 46 in the valve, and there being vacuum relief holes 41 in the vacuum supply path of the connector so that the vacuum at the work end may be controlled externally by a finger. External lugs (50) are provided on the connector which are engageable by fingers, Fig. 3 (not shown). The suction-irrigator may be made from injection moulded plastics, e.g. polyethylene, polypropylene, or from metal, with the connector being formed from moulded rubber or silicone material.
Patent GB-471959-A (GB)
Title: Improvements in or relating to valves and similar reciprocating parts and to a cooling medium therefor
IPC: F16K49/00
Filed: 1936-09-28
Abstract: An amalgam of sodium and mercury, or of lithium, potassium or other alkali metal, and mercury, in substantially eutectic proportions, is used as a liquid cooling medium for the hollow valves of internal-combustion engines and hollow metal parts generally operating at high temperatures.  Preferably, an amalgam of 40-45 per cent by weight of sodium is used.  The amalgam may be prepared by charging the correct proportions into a vessel flooded with nitrogen gas and heating it to about 200 DEG  F., the amalgam being drawn off by tubing into a storage vessel. Specification 224,288, [Class 7 (vi)], is referred to.
Patent GB-694974-A (GB)
Title: Means for counter-balancing printing screens, trays and other objects and for transporting them along work-tables and the like
IPC: F16F15/28
Filed: 1950-10-28
Abstract: 694,974. Stencilling-apparatus. STEAD, McALPIN & CO., Ltd., and PERRIGO, A. E. B. Sept. 7, 1951 [Oct. 28, 1950], No. 26336/50. Class 100(ii) [Also in Group XXX] A means for facilitating moving a printing screen or the like over a table 2 comprises a screen 1 on a frame 3 on a support 4 having rollers 8 running on a rail along one side, and a pair of sleeves-10 movable over legs 11 having ground wheels 12 on the other side which also has counterweights 15 suspended from the screen. When moving the screen one side is raised by cams or any other suitable means between the rollers and the other side is raised by the counterweights enabling the operation to be effected by one operator. The counterweights may be replaced by springs extending from the bottom of the sleeve 10 to the. top of the leg 11. The counterbalancing device may be on both sides. Any other suitable means may be used for counterbalancing such as hydraulic means or compressed air or electric motor.
Patent GB-1523012-A (GB)
Title: Bipolar transistor with high-low emitter
IPC: H01L21/225
Filed: 1976-06-24
Abstract: 1523012 Bipolar transistors RCA CORPORATION 24 June 1976 [30 July 1975] 26344/76 Heading H1K The emitter region of a bipolar junction transistor includes a relatively highly doped zone and between it and the base a graded lower doped zone less than a minority carrier diffusion length thick the lowest doped part of which abuts the base region, the barrier between the zones being effective to reflect minority carriers injected from the base region. The embodiment is a planar transistor 16, Fig. 9, formed in one junction-isolated section of an epitaxial layer in another isolated section of which a conventional bipolar transistor 86 can be simultaneously formed. Firstly dopant sources for the isolating zones 28 and base of transistor 16 are provided in the epitaxial layer surface by masked pre-diffusion and boron implantation respectively and driven in by heating. Then dopant sources are similarly provided for the graded emitter zone 32 and base contact zone 34 and base region 90 and driven in simultaneously. Next dopant sources are simultaneously provided for high doped emitter zone 30, emitter region 92 and collector contact zones 44, 100 and driven in by heating. In each of the above steps and the subsequent conventional provision of the electrodes shown a fresh oxide masking layer 36 is provided. If the transistor 16 is required to exhibit a low emitterbase breakdown voltage the highly-doped base contact zone 34 may be extended inwards to contact zone 30.
Patent GB-1430713-A (GB)
Title: Method of cleaning photographic processing devices
IPC: G03C11/00
Filed: 1974-06-13
Abstract: 1430713 Cleaning photographic processing apparatus FUJI PHOTO FILM CO Ltd 13 June 1974 [28 June 1973] 26348/74 Heading G2X [Also in Division C7] Photographic processing apparatus is cleaned with an aqueous solution containing a ceric compound at pH not more than 1. The acidity may be produced by adding hydrochloric, sulphuric, nitric or phosphoric acid, or by the presence of ammonium nitrate (which also prevents corrosion of metal vessels) and ammonium sulphate (which also prevents precipitation of ceric hydroxide). The ceric compound may be added as the sulphate, nitrate, oxide or hydroxide.
Patent GB-412542-A (GB)
Title: Improvements in or relating to apparatus for the automatic supply of measured quantities of liquids
IPC: G01F15/00
Filed: 1932-09-22
Abstract: 412,542. Liquid meters. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. Sept. 22, 1932, No. 26400. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 26, 1932]. [Classes 69 (i) and 135.] Liquid meters are provided with setting means for the delivery of a predetermined quantity of liquid. In the form shown in Fig. 1, a disc 6 is set with a projection 11 engaged with one of a series of holes in a disc 1 driven by the meter, and carries a projection 15 for closing the meter valve. Another form has a disc 6 with a projection 11 adapted to pass through a notch 5 in a member 16, Fig. 3, and a clutch 17 between the disc and meter. The disc 6 may have a pin 21, Fig. 4, adapted to act on a forked member 20.
Patent GB-1186897-A (GB)
Title: New Depilation Process
Inventor: GRALL FRANCOIS BERNARD MARIE
IPC: C14C1/06
Filed: 1967-06-08
Abstract: 1,186,897. Depilating and tanning. UGINE KUHLMANN. June 8, 1967 [June 8, 1966], No. 26413/67. Heading C6C. In depilating a skin, it is treated with an aqueous acidic liquor containing at least 10 g. per litre of an alkali metal dichromate, e.g. sodium or potassium dichromate, and at least one strong mineral acid, e. g. hydrochloric, nitric, sulphuric or perchloric acid. The acidic liquor may contain more than 6 g. acid per litre. Depilation may be effected by dissolving the dichromate in water, adding the acid or acids and then the skin. After acting on the skin, the acidic liquor may be drained off i. e. recovered, filtered and mixed with suitable known reducing agents and used for chrome-tanning the depilated skin, as mentioned below. The treated skin may be subjected to further depilation treatment with an aqueous caustic alkali, e.g. an aqueous caustic soda solution, to effect complete dissolution of the hairs. Before said further depilation treatment, the skin may be rinsed with brine, or treated with an aqueous solution of an organic tanning agent, such as quinone or formaldehyde, to protect the hair side of the skin. After the further depilation treatment with aqueous caustic alkali, the skin may be treated with aqueous ammonium sulphate and chrome-tanned with the above-mentioned recovered and reduced liquor. The skin, immediately after having been treated with the acidic depilating liquor, may be treated with aqueous sodium hyposulphite to effect tanning. Leather produced according to the invention may be conventionally matured, neutralized, dyed and nourished.
Patent GB-244883-A (GB)
Title: Improvements in or relating to telescopic masts or posts
IPC: H01Q1/10
Filed: 1924-11-06
Abstract: 244,883. Hildick, H. Nov. 6, 1924. Telescopic posts. - In telescopic posts in which the inner sections are raised by a cable passing over a pulley at the top of the outer section, which cable also operates a; pivoted catch holding the inner section in its raised position, the pulley 10 is mounted on the catch 8, which also carries two pins 14 serving as guides for the cable 7, so that by drawing the cable towards or away from the post the catch can be pulled into the engaging or disengaging position as required. The catch consists of two plates connected by the pins 14 and the pivot pin 13 and is mounted on a collar 12 which also carries eyes 12<b> for guy-ropes. Specification 233,035 is referred to.
Patent GB-1348748-A (GB)
Title: Aircraft having cabin outflow valves
IPC: B64D13/02
Filed: 1972-06-07
Abstract: 1348748 Valves UNITED AIRCRAFT CORP 7 June 1972 [29 July 1971] 26464/72 Heading F4V [Also in Divisions F1 and F2] An outflow valve controlling the flow of pressurized air from an aircraft cabin into ambient air has a pair of oppositely pivotable valve members 12, 14 on the aircraft skin 16. The outer face of the valve member 12 is recessed and has a plate 34 attached thereto by U-shaped supports 32 to form a tapered duct 30 through which the outflowing air can flow and controllably expand to reduce the noise and tone levels of the expanding air. The reduced pressure of the expanding air in duct 30 acts on the outer face of the valve member 12 and the plate 34 so that the pressure differential across the valve member 12 is reduced. Actuator 36 operates the valve members via the link 38.
Patent GB-534984-A (GB)
Title: Improvements in or relating to shock absorber struts or oleo legs for aircraft
IPC: B64C25/50
Filed: 1939-09-22
Abstract: 534,984. Aircraft alighting gear; vibration dampers. COWEY, L. E. Sept. 22, 1939, No. 26472. [Class 4] [Also in Group XXXII] A shock-absorber strut or oleo leg for aircraft comprises a cylinder 5 to which is attached a bracket 33 carrying a pivot for a wheel fork 30 which is connected by a piston rod 12 to a piston 7 movable in the cylinder 5. The cylinder is divided by a stationary piston-like member 21 having apertures 29, Fig. 5, between its upper and lower surfaces, and a spring-pressed valve 25 normally closing the passage between apertures 26, 28. For small movements of the piston, fluid passes from one side to the other through the apertures 29, but for larger movements, the valve 25 is lifted, and the fluid, passes through the apertures 26, 28. Compressed air and oil are passed into the cylinder through a valve closure member 48 in a passage leading to a dipping tube 50. The cylinder 5 is rotatably mounted in a casing 1 and its closure member 22 carries rollers urged towards cam surfaces by a coil spring 46 and tending to hold the wheel fork in a central position when the aircraft is in flight. During taxiing, the force between the rollers and the cam surfaces due to the weight of the aircraft tends to return the wheel to its central position.