baber/WOPTO huggingface dataset:
Patent GB-802189-A (GB)
Title: Process for the production of rubber-like polyurethane plastics of high molecular weight
IPC: C08G18/79
Filed: 1956-07-26
Abstract: A process for the production of rubber-like polyurethanes comprises reacting a linear condensation or polymerization product containing free terminal hydroxyl groups and having a molecular weight above 1000 with a dimeric diisocyanate and a cross-linking agent having a molecular weight below 1000 at a temperature lower than that required to split the dimeric dissocyanate into the corresponding monomeric diisocyanate.  The process can be carried out in one embodiment by reacting the linear condensation or polymerization product with an amount of the dimeric diisocyanate sufficient to provide an excess of free NCO groups over the hydroxyl groups in the condensation or polymerization product, and the product obtained is reacted with the cross-linking agent in an amount of 1 to 10 per cent by weight based on the weight of the condensation or polymerization product. In another embodiment the linear condensation or polymerization product is reacted with an amount of the dimeric diisocyanate insufficient to react with all the hydroxyl groups and the product obtained is reacted with the cross-linking agent and with a further amount of the dimeric diisocyanate.  Suitable compounds with terminal hydroxyl groups are hydroxypolyesters obtained by esterifying, for example, adipic and phthalic acids with, for example, glycol, diethylene glycol, propylene glycol and butylene glycol-1,3 or -1,4.  Also suitable are polymerization products of alkylene oxides and condensation products of glycols with themselves or thiodiglycols. Specified cross-linking agents are diamines, such as o-dichloro-benzidine and 2,5-dichloro-p-phenylene diamine, diand trihydric alcohols such as butanediol-1,3 or -1,4, trimethylol propane, quimtol, tetra- and pentabutylene glycols, hydroxypolyesters and hydroxypolyethers.  Suitable dimeric diisocyanates are dimerization products of 2,4-toluylene diisocyanate, chloro-p-phenylene diisocyanate and 1-ethylbenzene-2,4-diisocyanate. In examples: (1) a glycol/adipic acid hydroxypolyester is reacted at 130-140 DEG  C. with excess dimeric 2,4-toluylene diisocyanate, butane-1,4-diol is mixed in and the melt poured into moulds. Reaction is completed by heating the mouldings at 100 DEG  C.; (2) a similar process is employed, using a mixture of tetra- and pentabutylene glycols as cross-linking agent; (3) in a similar process water is used as the cross-linking agent.  Specifications 700,608 and 700,609 are referred to.
Patent GB-761621-A (GB)
Title: Improvements in or relating to drainage channels
Inventor: CARPENTER GUY VICTOR
IPC: F16L49/00
Filed: 1954-08-11
Abstract: 761,621. Conduits. BROAD & CO., Ltd. June 15, 1955 [Aug. 11, 1954], No. 23337/54. Class 33. A channel bend suitable for connecting a drain pipe to a main drainage channel has its socket 12 for the drain pipe subtending more than 180 degrees at its axis to enable a good joint to be made, the outlet end also subtending more than 180 degrees at its axis, thus preventing overflow, by provision of a curved-over top 13 to the outside wall, and at 14 this outside wall is made vertical to allow a stopper to be inserted into the pipe end for testing purposes.
Patent GB-918795-A (GB)
Title: Improvements in or relating to co-axial cables
IPC: H01P3/02
Filed: 1960-07-04
Abstract: 918,795. Cables. MILDNER, R. C. June 27, 1961 [July 4, 1960], No. 23344/60. Class 36. A high-frequency air space coaxial cable comprises inner and outer tubular corrugated conductors of aluminium, lead or copper, at least one of which is helically corrugated, separated by insulation including air spaces. Such insulation which may be corrugated may be in the form of cylinders or of cartwheel cross-section, but preferably it consists of trough-shaped members as are described in Specification 918,794. To decrease the random variation of cable dimensions in order that transmission characteristics of the cable at working range of frequencies is substantially uniform, the smaller pitch of the two conductor corrugations should not exceed one inch and to decrease the periodic fluctuation of local capacitance between the conductors the ratio of the pitch of the other conductor to the number of longitudinal air spaces should be less than one inch. Specification 918,793 also is referred to.
Patent GB-1462876-A (GB)
Title: Knee arthroplasty
IPC: A61F2/38
Filed: 1973-05-17
Abstract: 1462876 Knee joints CHAS F THACKRAY Ltd 29 April 1974 [17 May 1973] 23493/ 73 Heading A5R An endoprosthetic knee joint comprises a femoral portion, 22, 23 Figure 7, and a tibial portion, 25, 26, the femoral portion comprising two femoral implants, Figure 1, each being designed for implantation into one of the femoral condyles 20, 21 and having a bearing surface 1 shaped as a segment of a right circular cylinder, and the tibial portion, being designed for implantation into the upper end of the tibia and presenting, for each femoral implant, a planar upper surface 10, Figure 3, on which the bearing surface of the femoral implant will bear. The femoral implant is formed from a plastics material such as high density polyethylene, and has a substantially frusto-conical cross-section with converging side surfaces 3 (4), Figure 2 (not shown), each formed with an arcuate groove 5 (6). These grooves and a transverse hole 7 are for keying to the fixing cement, which may be an acrylic. The ends of the implant 8, 9 are convex. The chord joining the extremities of the arc 1 is of length 1"-2". The tibial portion comprises two tibial plateaux, Figure 3, which may be linked by a bridging bar, which may be integrally formed with the two plateaux, or may subsequently be welded thereto. Each plateau comprises a cap for keying to the upper end of the tibia. The plateaux may be made of stainless steel, or alternatively of chrome/cobalt or other metallic alloy, or some other material not degradable within the body. Each tibial plateau has a planar semi-circular upper surface 10 with a flange 11 containing a slot 12 extending from the straight edge, and a lip 13, which may be chamfered (14), Figure 6 (not shown), around the arcuate edge. Flange 11 and lip 13 act to retain cement, and slot 12 assists keying to the cement. The lip 13 may extend as far as the flange on each side, or may be cut away (15, 16) for ease of manufacture, thus allowing for the escape of cement during fixing. The materials used respectively for the femoral and tibial portions may be interchanged; a portion made of polyethylene may be formed by machining, forging, sintering or moulding. A tibial portion comprises right-handed (31) and left-handed (30) plateaux, Figure 8 (not shown), which are mirror images of each other, but lack symmetry as regards the shapes of the ends of the lip (32) and of the flange (36).
Patent GB-276514-A (GB)
Title: Improvements in carburetters
IPC: F02M1/00
Filed: 1926-09-23
Abstract: 276,514. Lioud, F. Sept. 23, 1926, Addition to 223,899 and 258.866. Spray carburettors.-The carburettor claimed in the parent Specification as modified according to Specification 258,866 is further modified by (a) placing the throat of the air conduit 14 adja.- cent the atomizer, (b) causing all the air through the tube 12 to pass through and atomize the petrol or other fuel by inserting between the tubes 11, 12 a perforated bell with closed upper end, (c) replacing the calibrated orifice for the water or heavy fuel by a needle-controlled aperture, and (d) providing a needle valve to cut, off the water or heavy fuel when the throttle is at or near its closed position, thus dispensing with the necessity of a float chamber. The throat of the air conduit 14, Fig. 1, is adjacent the atomizer in which a bell 33 with apertures 34 in its wall is inserted between the tubes 11, 12, petrol being supplied to the space 5 and water or heavy fuel to space 10. With increasing suction the petrol level falls and more air enters thus reducing the petrol flow. The float chambers 1, 2, Fig. 2, for water or heavy fuel, and petrol respectively, communicate with the atomizer by conduits 3, 7, the conduit 7 having a calibrated orifice 8 whilst the water conduit has an aperture 44 controlled by a spring-loaded needle valve 38 which may be actuated manually or by barometric or thermostatic means. In the modification, Fig. 7, the water or heavy-fuel float chamber is dispensed with, the fluid being admitted directly to the conduit 46 with which a valve 51. normally kept open by a spring 50, co-operates. The upper part of the valve slides in a bush 54 which presses against a collar on the needle valve through a spring 55. When the throttle is at or near its closed position an arm 52 on the spindle thereof depresses the bush and valve and cuts off the liquid. With the elastic linkage described, movement of the throttle may be continued after the valve 51 is closed. In a further modification, the arm 52 is elastically connected to the throttle spindle through a coiled spring and bears directly on the needle valve. The arm 52 may be adjusted to vary the moment of closing.
Patent GB-295937-A (GB)
Title: Tooth-brush
IPC: A46B9/04
Filed: 1928-08-20
Abstract: 295,937. Rohleder, W. Aug. 19, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Holders with clamping- devices for mops.-A holder 2, Figs. 1 and 2, for toothcleaning material such as loofah is bifurcated and the ends thereof are held within a recess 4 in a handle 1. The holder shown in Fig. 3 comprises two arms 5, 6 hinged at 7 and provided with grooved portions 8, 9 to receive the loofah. A loop 10 on the arm 5 is adapted to engage over the end of the arm 6 to retain the loofah in place.
Patent GB-1468086-A (GB)
Title: Sights for firearms
IPC: F41G1/00
Filed: 1974-05-29
Abstract: 1468086 Sights FRANCE ARMED FORCESMINISTER OF 29 May 1974 [1 June 1973] 23867/74 Heading F3C A sight for a firearm comprises support means securable in fixed position to the firearm, a sight element, a resilient elongate member connected at one end to the support means and at the other end to the sight element which forms an extension of the elongate member, the elongate member being deformable resiliently in a direction generally transversely of its lengthwise axis in order to adjust the position of the sight element relative to the support means, and adjustable control means connected to a portion of the elongate member and to said support means for the transverse deformation of the elongate member to vary the distance between said portion and said support means thereby to adjust the position of the sight element relative to the support means. In an embodiment a backsight 1, Figs. 2 and 3, has a support 4 having a wall 5 with a slot 6 therein for guiding a rib 7<SP>1</SP> of a slide 7, a sight element comprising a hole la in the slide 7, a resilient elongate member comprising a metal rod with parts 11, 12 each having limbs 13, 14, each limb 13 being attached to the slide 7 and each limb 14 being secured to the wall 5 at 18, and a screw 20, having a knurled head 21. The screw 20 passes through a hole 19 in the wall 5 and in between the parts 11, 12 of the rod, and has a nut 22 thereon, the latter being prevented from rotating. Rotation of the screw 20 causes or allows movement of the slide 7 and the screw is set in the required position by a projection 25 of the wall 5 being received in one of the notches 26 formed in the head 21 of the screw. In another embodiment a foresight 2, Figs. 4, 5 and 6, has a resilient elongate member comprising a blade 34 having a sight element 32 and being attached to a wall 33 by a screw 38, a screw 41 having a head 42 with castellations 45 therein, the screw passing through a hole 40 in the blade 34 and into a boss 39 of the wall 33, a button 47 which is mounted on the blade 34, and has a projection 46 which is engageable in the castellations 45 of the head 42. When adjustment of the sight element 32 is required, the blade 34 is forced in the opposite direction to that of the arrow shown in Fig. 5 in order to release the projection 46 from a castellation 45 and allow the screw 41 to be rotated.
Patent GB-664316-A (GB)
Title: Improvements in the construction and arrangement of drivers' cabs for dumper trucks and other road vehicles
IPC: B60N2/01
Filed: 1949-09-16
Abstract: 664,316. Vehicle bodies. AVELING- BARFORD, Ltd., and WILCOCK C, M. Aug. 18, 1950 [Sept. 16, 1949]. No. 23935/49. Class 108(i) A vehicle is of the type having steering mechanism capable of operation by the driver when he is facing in either a vehicle forward or vehicle in reverse direction to enable the vehicle to be driven with the load behind or in front of the driver, and having a seat which is adjustable to face in either of such directions of travel, and is characterized by having a revolvable cab enclosing the driver's seat. Built up from the chassis 9 is a horizontal platform 10 supported on a central hollow pillar 12 through which the steering column extends. The platform is revolvably mounted on the column and supports a set of pedal brake &c. controls, (see Specification 515,911, Group XXXI), which are movable about horizontal axes and are connected below the platform to their respective tansmissions in a control box (not shown). The upper end of the steering column is provided with dual hand wheels 13 and a seat 14 is supported partly by a bracket 15 carried by the pillar 12 and partly from the platform 10. Both seat and platform may be swivelled about the column 1, and the platform supports or constitutes the floor of the cab. The cab comprises a floor 16, walls 17-20, and a roof 21, the front 20 includes a windscreen 22, and the rear wall 19 is provided with windows 26. The steering column may also carry body tipping controls. In the Provisional Specification two sets of pedal controls may be provided for the two seat positions. or a seat for each driving direction may be provided
Patent GB-690613-A (GB)
Title: Improvements in or relating to a portable storage device for perishable products
IPC: F25D25/00
Filed: 1948-09-13
Abstract: 690,613. Food &c. containers; drawers. INDUSTRIAL PATENTS CORPORATION. Sept. 13, 1948 [Oct. 4, 1947], No. 24000/48. Class 52(i) [Also in Groups XIII and XXXII] A portable container for perishable' goods comprises a frame 10 mounted on wheels 11 and carrying air filtering screens 15, 16 covering shelves 12 with sliding trays 13, the whole being wheeled into and out of a refrigerating chamber. Each side of the frame 10 adjacent the top carries a roller 15 for a flexible fabric screen which may be raised or lowered over the side of the rack. Another screen 16 can be drawn horizontally across the top of the frame. The screen material, e.g. nylon, textile or metal mesh acts as a wick for water dripping from the cooling coils or sprayed on the screens, so that air passing through the screens is humidified. A basket 14 with screening material may be mounted in the frame. The screens may act as colour filters to prevent harmful light rays reaching the goods. Several racks may be accommodated in the refrigerator, two being shown in the Figure. Hooks 17 are provided for securing the screens when unrolled.
Patent GB-905141-A (GB)
Title: Improvements in or relating to electrolytic cells
Inventor: COTTAM RONALD GEOFFREY
IPC: C25B9/19
Filed: 1960-07-11
Abstract: 905,141. Electrolytic cells for chlorine and caustic alkali production. IMPERIAL CHEMICAL INDUSTRIES Ltd. June 23, 1961 [July 11, 1960], No. 24082/60. Class 41. An electrolytic cell, or multi-cell assembly connected in parallel or series, for the production of chlorine and caustic alkali, is provided with a non-conducting porous diaphragm held between a foraminate sheet-metal cathode and a foraminate titanium anode coated with platinum or an alloy thereof; whereby the anode-cathode gap can be eliminated except for the thickness of the porous diaphragm itself and a thin anode-supporting sheet and also the electrical resistance of the electrolyte between anode and cathode is substantially reduced. The cell can be operated at 4 kA/m.<SP>2</SP>. The cell consists of a non-conducting porous diaphragm 1 held between and in contact with a perforate or reticulate sheet-metal cathode 3, e.g. of steel, iron or titanium and a like sheet titanium anode support 2, coated with a platinum metal as the working anode surface 4. Platinum alloys, comprising metals of the same group, may be used. The asbestos diaphragm 1 is supported on the anode side, so that turbulence in the electrolyte owing to evolution of chlorine from the anode surface causes a minimum of mechanical damage to the diaphragm; and it is stated that there is not much mixing of anode and cathode products through the diaphragm.
Patent GB-1260001-A (GB)
Title: Improvements in or relating to the manufacturing of materials such as light aggregates, capable of being incorporated into concrete
IPC: C04B20/06
Filed: 1969-05-13
Abstract: 1,260,001. Expanded aggregates. HOUILLERES DU BASSIN DU NORD ET DU PASDE-CALAIS. 13 May, 1969 [17 May, 1968], No. 24233/69. Headings C1H and C1J. In a method of making expanded nodules from a paste formed of water and carbonaceous materials, e.g. shale coals, part of the shale coal is crushed and roasted before being mixed with the remainder of the crushed coal to adjust the carbon content of the mixture, which is then made into a paste and formed into nodules which are roasted, expanded and cooled. The preliminary roasting step is preferably in a fluidized bed. In an illustrated embodiment, shales containing 10% b.w. carbon are treated, 60% being completely decarbonized before being mixed with the remainder. This mixture containing 4% b.w. carbon is suitable for subsequent treatment in a revolving furnace.
Patent GB-339976-A (GB)
Title: Improved optical means for operating light-sensitive apparatus
IPC: H01J40/00
Filed: 1929-08-08
Abstract: 339,976. Prince, R. C., and Radio- Visor Parent, Ltd. Aug. 8, 1929. Gauge glasses.-A device adapted to indicate liquid level in a gauge tube F comprises an electric lamp A having a single extended filament parallel to the tube, which, when the tube is empty, casts a shadow of an opaque strip C on a concave cylindrical mirror D which projects it on to a light-sensitive cell E. When the tube F contains liquid, light is refracted on to the mirror D in proportion to the height of liquid, and the cell E is correspondingly illuminated. In a modification, Fig. 3, a narrow beam of light from a projector H is refracted along the line J L and then through a slit O in a screen M to a light sensitive cell E. If the tube F is empty, the beam of light misses the slit O. An interrupter may be placed between the lamp and cell, and the current from the latter may be amplified. If the liquid in the tube F is replaced by another liquid having a different refractive index, the light will be deflected away from the slit O. If the liquid is partly opaque, the narrow beam becomes scattered and the illumination of the cell is reduced. The device may be employed in soap-making when it is desired to stop the passage of a flowing solution if it should become cloudy. The first Provisional Specification refers also to the use of a bubble level indicator, the light-sensitive relay operating a pump, signal, alarm bell, or firing a gun when the bubble reaches a predetermined spot.
Patent GB-405916-A (GB)
Title: Improved device for the adjustable damping of synchronized clock escapements
IPC: G04C11/08
Filed: 1933-09-01
Abstract: 405,916. Electric clocks. LEGAGNEUR, P. SALMON-, BERTRAND, A., and SOC. DES ETABLISSEMENTS HENRYLEPAUTE, 17, Rue Desnouettes, Paris. Sept. 1, 1933, No. 24303. Convention date, Sept. 10, 1932. [Class 139.] A clock in which an alternating current supply, used for other purposes such as lighting or power, is also used to synchronise the clock continuously with the oscillations of the current and to energize a motor 1 which winds up the mainspring, has a device for adjustably damping the escapement which consists in tapping the field magnet flux of the motor on to pole-pieces 8, 10 with adjustable gap, which pieces act upon a soft iron member 11 on the balance wheel 6, the soft-iron being also energized by a permanent magnet 12 (e.g. of cobalt steel). Laminated members 3, 4 are attached to the two poles of the magnetic portion 2 of the motor 1 to give a magnetic leakage intended for synchronization. A soft iron piece 7 on member 3 carries the screw pole-piece 8 and a soft iron piece 9 on member 4 carries the screw pole piece 10. These adjustable poles 8, 10 are in line and are opposite the soft iron member 11 on the balance when the latter is at rest. The magnet 12 is adjustably mounted on the movement relatively to piece 7, by a cap 13. The member 11 is a U-shaped piece of soft sheet iron, the legs of the U gripping the sides of the balance rim.
Patent GB-1441990-A (GB)
Title: Process for preparing omega-formyloxy-alkanals
IPC: C07C45/53
Filed: 1974-06-03
Abstract: 1441990 Omega - formyloxy - alkanols RHONE-POULENC SA 3 June 1974 [4 June 1973] 24476/74 Addition to 1217970 Heading C2C #-Formyloxy-alkanols of formula where n is 5 to 11 are prepared by reacting formic acid with a cycloalkyl hydroperoxide of formula in the presence of a small amount of a strong acid with a pka of less than 2. Exemplified as strong acids are hydrochloric, nitric, sulphuric, benzene-sulphonic, methane sulphonic and para-toluene-sulphonic acids.
Patent GB-187106-A (GB)
Title: Improved moulding machine
IPC: B30B11/02
Filed: 1921-09-15
Abstract: 187,106. York, W. Sept. 15, 1921. Stationary-mould-table machines; feeding.-In a moulding-machine in which plastic material is fed automatically from a reciprocating hopper 2 between upper and lower plungers 9, 22, the upper plunger 9 is provided with a punch 10 attached thereto by an adjustable spindle 11 and collar 12, and is reciprocated in grooves in the top bracket 17 by means of rods attached to the axle 16 and driven from eccentrics 13 on the main shaft 14. The moulded material is stripped from the punch by means of a plate 18 normally held down by springs 40 and raised by the plunger on its upward path contacting with a plate 20 attached to rods 21. The lower plunger 22 has a similar punch 23, and is operated first to compress and then to eject the material by means of a cam 26. Two cams 3, 32 are mounted on an auxiliary shaft 28, the cam 3 actuating a lever 5 against the action of a spring-controlled bolt 7 so as to reciprocate the hopper 2 by means of interengaging teeth formed on the lever and the hopper base, while the cam 32 operates rods 29 for piercing holes in the article through links and levers 30, 31.
Patent GB-137791-A (GB)
Title: An improved deodoriser
IPC: C11D1/00
Filed: 1919-10-08
Abstract: 137,791. Newth, W. H. D. Oct. 8, 1919. Deodorants.-A deodorant for carpets &c., or for use in kennels and stables, consists of sodium chloride, a weak acid such as acetic acid, and copper sulphate, or an equivalent antiseptic salt having a permanent colour. Alum or permanganate of potash or both may be added.
Patent GB-693414-A (GB)
Title: Improvements relating to electrical plug and socket connectors and locking devices therefor
Inventor: DETAR DONALD REID
IPC: H01R13/62
Filed: 1951-10-22
Abstract: 693,414. Two-part couplings. WINCHESTER ELECTRONICS, Inc. Oct. 22, 1951, No. 24591/51. Class 38 (i). In a plug-and-socket connector, the socket part comprises an insulating member 10 having a polygonal head portion 11 and a threaded portion 12, said member being adapted to be secured in a panel 14 by a nut 13 with a locking- ring 23 secured between the head portion and the panel. Said locking-ring has diametricallyspaced and outwardly-bent projections 24 adapted to co-operate with inwardly-bent projections 27 on a second locking-ring 28 on the plug part held captive between a head portion on an insulating member 29 and a cover 32. After engaging the plug and socket parts, ring 28 is rotated to engage the projections 24, 27, whereupon the cover 32 is tightened to prevent further rotation of ring 28. Plug-and-socket contacts 38, 16 respectively are retained in the insulating members 29, 11 by U-shaped spring clips 33.