baber/WOPTO huggingface dataset:
Patent GB-744846-A (GB)
Title: A multi-point lubrication system
Inventor: BARKER BERTRAM MEAD DENTON
IPC: F16N13/16
Filed: 1953-05-01
Abstract: 744,846. Lubricating. BENTON & STONE, Ltd. April 27, 1954 [May 1, 1953], No. 12078/53. Class 12 (3). [Also in Group XXVIII] A multi-point lubrication system comprises a plurality of small fluidoperable pumps corresponding in number to the positions to be supplied, each pump being of the diaphragm type and being provided with teat-like valves, a lubricant feed pipe and a motive-fluid pipe common to all the pumps, and motive-fluid controlling means adapted to effect simultaneous single actions of all the pumps at the desired time intervals. In the arrangement shown in Fig. 1, a plurality of pumps a are connected by pipes f, g to a reservoir h for lubricant and by pipes n, o through a valve p to a pipe q leading to a source of compressed air. A by-pass pipe w leads from the pipe q to the top of the reservoir h, for use in priming the pumps. The valve p may be operated intermittently by a solenoid in a housing r, the solenoid being energized under the control of a timing device s. The control of the valve may alternatively be effected by means of a rotary cam acting on a lever. Each pump a, Fig. 2, comprises a chamber b provided on one side with a rubberlike inlet valve c and on the opposite side with a similar discharge valve d. One side of the chamber is bounded by a diaphragm i loaded by a spring and supported by an adjustable abutment k which is mounted in a chamber m adapted to receive compressed air. With each actuation of the control valve an impulse of compressed air acts on the diaphragm of each pump to cause discharge of lubricant through each outlet e. Instead of compressed air, a liquid such as oil may be used, this being supplied by a reciprocating pump.
Patent GB-441970-A (GB)
Title: High frequency signalling system
IPC: H03G11/00
Filed: 1935-04-23
Abstract: 441,970. Valve circuits for wireless reception. HAZELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.-(Assignees of Wheeler, H. A. ; 18, Melbourne Road, Great Neck, New York, U.S.A.) April 23, 1935, No. 12165. Convention date, May 31, 1934. [Class 40 (v)] To eliminate interference from stations closely adjacent in frequency to the desired signal, the high-frequency couplings T1, T2 and the intermediate frequency stages T4, T5 of a superheterodyne receiver are broadly tuned to almost uniform response over a band 14 kc. wide, the interference being removed by a wave-trap between the rectifier and loud-speaker and tuned to the frequency difference between adjacent carriers, e.g. 10 kc. The trap W1, connected in the cathode return of the low frequency pentode V6, comprises a parallel combination C1, L<1>1, the reactances of C1, L<1>1 at 10 kc. being of the same order as the mutual resistance of V6. The trap W2 is a series combination L<1>2, C2 across the primary of T7, each of the impedances L<1>2, C2 at 10 kc. being of the same order as the apparent primary impedance of T7, which is largely affected by the secondary shunt resistance R7. The trap W is connected across the speech coil L2 of the reproducer and comprises a series combination LC, resonant at 10 kc. The relation between L1, L and L2 at or near 10 kc. is L =L2=2L, L being the apparent secondary inductance of T8 with the primary shortcircuited. If L1 and L2 are unequal the preferred relation is L =L1,L2/L1 + L2, or the trap may be modified by the addition of inductances between L and L1, or L and L2, or both (Figs. 3, 4 and 5, not shown). Suitable equations for the relation between the various inductances in these cases are given. Usually only one trap of the three shown is necessary, the speech - coil trap W being preferred. Specifications 378,149, 387,912, and 414,651 are referred to.
Patent GB-394118-A (GB)
Title: Improvements in reducing telescopic view finders for photographic cameras
IPC: G02B23/14
Filed: 1932-04-28
Abstract: 394,118. View-finders. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. -(Assignees of Albada, L. E. W. van; 31, Dr. D. Bakkerlaan, Bloemendaal, near Haarlem, Holland.) April 28, 1932, No. 12192. Convention date, May 1, 1931. [Classes 97 (i) and 98 (i).] In a reducing telescopic view-finder for cameras, the objective consists of two single thin lenses 1, 2, separated from each other and having an image plane behind the second member, and the principal rays traverse these lenses practically symmetrically so as to produce an image free from distortion. This objective is used in conjunction with an ocular 3 consisting of a single converging lens. The vertex distance between the two objective lenses is at least À82 of the focal length of the objective. Preferably the objective is arranged to produce slight barrel distortion which is neutralized by the ocular. In the form shown the lens 1 is a plano-convex lens with its plane surface towards the object and the lens 2 is bi-convex, and the two lenses project an image of the ocular at a distance in front of the lens 1 equal to the radius of its curved surface. In another form the lens 2 is similar to the lens 1 and the convex surfaces of the two lenses face each other. Numerical data are given for both forms. The lens system is used in conjunction with means for reversing the image which may consist of reflectors, of which a number of arrangements are illustrated, or of a system of lenses for which data are given. When a reversing reflector is used it may be rotatable, together with the optical parts behind it, about the axis of the objective. To avoid parallax, the view finder may be arranged, as shown in Fig. 6, with a plane parallel glass plate 4 disposed at an angle of 45‹ in front of the camera objective 5, the finder being so adjusted that the centre of the diaphragm of the objective 5 is the image reflected in the plate 4 of the centre of the entrance pupil of the finder.
Patent GB-364976-A (GB)
Title: Improvements in lighting fittings
IPC: F21S8/00
Filed: 1931-04-24
Abstract: 364,976. Flood-lights. BENJAMIN ELECTRIC, Ltd., Tariff Road, Tottenham, London. April 24, 1931, No. 12235. Convention date, May 14, 1930. [Classes 75 (ii), 75 (iii), and 75 (iv).] Mounting electric lamps and reflectors in lamp casings; supporting.-A lamp for illuminating streets, petrol-filling stations and like outdoor places comprises a concave main diffusing reflector producing a diffused flood of light, and an inner reflector behind the light source to produce a highly concentrated beam of light, the light source being pivotally mounted to vary the relative distribution from the two reflectors. The main reflector may be of vitreous enamel and the inner reflector of polished and/or chromium plated metal. In the form shown, the main reflector is scoopshaped with a substantially flat rectangular top, and the inner reflector is substantially parabolic with shallow flutes 8 and is provided with a positioning flange 2a, both reflectors being provided with upper flanges for securing them to the bottom of a hood 3 housing an electric lamp holder 22. The hood 3 is extended upwardly on two opposite sides to form a fulcrum 17, Fig. 2, on which a cap 16 carrying the lamp holder 22 is pivotally mounted by means of projections 18 and is fixed in any desired position by thumb-screws 19. Alternatively the top of the hood could be flat and the fulcrum formed on the cap. The hood is formed with an arm 33 pivotally bolted to a bracket 25 and with an arcuate slotted arm 34 whereby the lamp may be adjusted vertically. The bracket 25 is formed with a tubular portion 26 which rests on the top of a vertical supporting pipe 27, the lamp being adjustable horizontally and locked in position by set screws 29. The bracket 25 is also formed with a channel 30 which receives the electric supply leads and is fitted with a cover 31.
Patent GB-1520099-A (GB)
Title: Photochromic lenses and lens blanks
IPC: C03C17/28
Filed: 1977-03-23
Abstract: 1520099 Photochromic lenses AMERICAN OPTICAL CORP 23 March 1977 [20 April 1976] 12305/77 Heading G2J  A photochromic opthalmic lens or lens blank has a coating containing an ultraviolet absorber, in an amount which progressively increases between opposed edges of a zone of the lens. The coating reduces the photochromic properties of the coated areas. The coating is preferably applied so that distant-vision areas of the lens react photochromically and near-vision areas of the lens are free of photochromic behaviour, Fig. B.
Patent GB-435746-A (GB)
Title: Improvements in ladders for fire escapes, water towers and the like
IPC: E06C7/08
Filed: 1935-04-24
Abstract: 435,746. Making ladders. MERRYWEATHER & SONS, Ltd., and OSBORNE, J. H., Greenwich Road, and MILLER, L. C., 8, St. Austell Road, Lewisham, both in London. April 24, 1935, No. 12315. [Class 83 (ii)] [See also Group X] A modification of the hollow metal ladder sides described in Specification 403,757 consists in providing each bent sheet-metal member A, from which the sides of the ladder are formed, with flared ends E, and electrically welding to opposite ends of the members, further bent sheet-metal strips B adapted to receive the other ends of the opposed members. The joints are electrically welded, as shown in Fig. 4.
Patent GB-1402782-A (GB)
Title: Magazine for photographic slides
IPC: G03B23/06
Filed: 1973-03-14
Abstract: 1402782 Optical projection apparatus FRANKE & HEIDECKE GmbH [trading as ROLLEI-WERKE FRANKE & HEIDECKE] 14 March 1973 [30 March 1972] 12334/73 Heading G2J A circular slide magazine for use in a projector having a slide lifting ramp has inner and outer annular walls 2, 9 respectively a recess 4 for the slide ramp of a projector to enter between the walls 2, 9 and partition walls 3, the magazine being characterized by the walls 3 tapering downwardly (as viewed) over the recess 4 and tapering upwardly over their remaining length.
Patent GB-1425548-A (GB)
Title: Polyurethane elastomers and diisocyanates suitable for use in their preparation
IPC: C08G18/80
Filed: 1974-03-20
Abstract: 1425548 Polyurethane elastomers and dispersions thereof BAYER AG 20 March 1974 [23 March 1973] 12342/74 Heading C3R Polyurethane elastomers are prepared by reacting (a) a compound of M.W. 500 to 6000 which contains two reactive hydrogen atoms, (b) a diisocyanate component which comprises an allophanate or biuret diisocyanate of the formula wherein R is the residue obtained by removing the NCO groups from an organic diisocyanate having a M.W. of 112 to 1000, R<SP>1</SP> is a C 1-12  monovalent hydrocarbon group, X is -O- or -NR<SP>2</SP>-, Y is -O- or -NR<SP>3</SP>-, R<SP>2</SP> and R<SP>3</SP> are each C 1-12  monovalent hydrocarbon groups and n is an integer from 9 to 89 and optionally (c) a chain lengthening agent of M.W. below 500 and containing two hydrogen atoms. The elastomers may be prepared by the one-shot or prepolymer process. Preferred components (a) are polyesters, polylactones and polycarbonates. Component (b) preferably contains 10 to 50 mol per cent of the allophonate or biuret diisocyanate, the remainder being a conventional diisocyanate used in the polyurethane art. The allophanate diisocyanate may be prepared by reacting 1 mole of the monofunctional alcohol with 2 moles of a diisocyanate R(NCO) 2  the first stage yielding a urethane which then reacts with a second mol of diisocyanate at a higher temperature. To prepare the bivret diisocyanate the said monofunctional alcohol is converted into a secondary amine by reaction with an N-substituted ethylene imine or a primary amine and this secondary amine is reacted with a diisocyanate in the molar ratio of 1 : 2. Component (c) may be a diol or diamine. The elastomers are suitably formed into non- ionic, emulsifier-free dispersions, most conveniently by employing the prepolymer process and using component (c) in the form of an aqueous solution. The elastomers may be used, in particular in the formation of coatings.
Patent GB-628055-A (GB)
Title: Improvements in and relating to surgical trusses
IPC: A61F5/30
Filed: 1947-05-07
Abstract: 628,055. Surgical trusses. ROSE, W. D. May 7, 1947, No. 12343. [Class 81(ii)] A surgical truss or belt is so shaped that it rises from the frontal portion, carrying the pressure pads, to the hips and thence rises further to engage the wearer's back. In the form described a substantially rigid frontal portion, of steel or plastic and carrying an adjustable pad 6, rises over the hips, at 2, and continues upward to resilient arms 3 which engage the back. The arms 3 are preferably of steel or tempered plastic and are covered with leather, fabric or plastic material. If desired the arms 3 may be connected by a strap or catch or the back portion and arms may be formed in one piece detachably connected to the frontal portion.
Patent GB-1421557-A (GB)
Title: Flame resistant synthetic fibres
IPC: C08L1/00
Filed: 1973-03-15
Abstract: 1421557 Flame resistant fibres KURARAY CO Ltd 15 March 1973 [16 March 1972] 12419/73 Heading B5B [Also in Division C3] Fibres comprising PVA of average polymerization 500-3000 and a degree of saponification of 99À5%, PVC, stannic oxide or stannic acid of particle size not exceeding 10 Á and boric acid, the weight ratio of PVA ; PVC being 90 : 10 to 55 : 45, the content of stannic oxide or acid being 0À1-5À0% (as SnO 2 ) based on the total weight of polymer and of boric acid being 0À02-0À5% based on the weight of PVA and having a tenacity above 3À5 g./d. and of hot water resistance above 110‹ C. are prepared by mixing partly saponified PVA having a degree of saponification of 88À5- 99À5% with the stannic oxide or acid and with 0À5-4À0% boric acid (based on PVA) in an aqueous solution mixing the solution with an emulsion of PVC having an average particle size of not greater than 1000Š to form a spinning solution. Spinning the solution into an alkaline bath, roller drawing, neutralizing wet heat drawing and washing the filament to adjust the boric acid content thereof to 0À02- 0À5% based on PVA, drying and dry heat drawing to a total draw ratio of at least 10 times and then shrinking the filament.
Patent GB-433080-A (GB)
Title: Suspensions for deflectional instruments
IPC: G01R1/12
Filed: 1934-04-25
Abstract: 433,080. Indicating - apparatus. BUTTERWORTH, S., and COOK, L. O., Admiralty Research Laboratory, Teddington, Middlesex. April 25, 1934, No. 12464. [Class 106 (iv)] [See also Groups XXXVI and XXXVII] The rotatable element of a deflectional instrument is suspended by means of a length of wire or strip B having a locating disc or plate A at each end, the discs or plates being respectively attached to the rotatable element with their planes perpendicular to the axis of the element and to the supports E therefor. In the construction shown, as applied to an electrical deflectional instrument such as a galvanometer or relay with a movable coil D, the wire B is threaded through holes in the discs A and soldered to the backs of the discs. The coil D is mounted on a central spindle between the ends of which and the fixed spindles E are placed the suspensions, the ends of the spindles being recessed to receive the discs A which are secured to the spindles by removable clips F. Freedom from sag or like displacement due to tilting of the instrument may be secured by applying spring tension along the axis of the spindles.
Patent GB-212782-A (GB)
Title: Improvements in and relating to filling tubes for tanks and the like
IPC: A62C4/00
Filed: 1923-05-09
Abstract: 212,782. Kessler, L. May 9, 1923. Vacuum relief valves.-The closure member 14 of a filling tube for a receptacle is provided with a spring-controlled venting valve 18 comprising a loose ball supported by a cup having a perforated stem and acted on by a spring bearing against a removable perforated cap.
Patent GB-201643-A (GB)
Title: Improved means for screening air for carburation in internal combustion engines
IPC: F02M35/04
Filed: 1922-05-03
Abstract: 201,643. Stratton, F. F. May 3, 1922. Density separators.-The air supply of a carburettor for aircraft and other engines is freed from dust by drawing the air through a helical channel of gradually increasing cross-section, and intercepting the dust by providing a port or ports at or near the point of maximum cross-section. Water may be supplied to the channels, and two channels, each provided with a separating port, may be provided in sequence. The air enters through a scoop B facing the air current and is drawn by engine suction through a helical channel A<1> of gradually increasing cross-section and provided with an interceptor plate C, the dust passing into a receptacle D, and the air passing round a second channel A<2>, provided with an interceptor plate C<1> and receptacle D<1>, to an outlet pipe F leading to the carburettor. The interceptor plates C, C<1> may be adjustable, and the receptacles D, D<1> are closed by caps or by spring or weighted plates E, E'. In a modification, the receptacles D, D<1> open into a common chamber having a contracted outlet open to the atmosphere in which is situated a dust-ejecting nozzle connected to a scoop facing the air current. Water may be fed to inlets G<3> opening into the channels A<1>, A<2> from a chamber G provided with siphon wick feeds G<1>, G<2>. In modifications, the inlets G<3> are fed by a common supply pipe provided with a needle or other valve, which mav be interconnected with the carburettor throttle. The water may be supplied from the radiator, carburettor jacket, or a separate tank, and may pass through a sight drip feed device mounted on the dashboard.
Patent GB-1179644-A (GB)
Title: Improvement in or relating to Strobing Arrangements for Computers
Inventor: EILLEY EDWARD STRETTON
IPC: H03K3/286
Filed: 1966-03-22
Abstract: 1,179,644. Strobing data store outputs. MULLARD Ltd. 22 March, 1967 [22 March, 1966], No. 12561/66. Heading G4C. [Also in Division H3] The output (e.g. amplified) of a computer store (e.g. ferrite core or thin film) is applied to a bi-stable device consisting of a cross-coupled pair of transistors, the supply of the bi-stable being pulsed (e.g. using a transistor switch) in a predetermined time relationship with the expected arrival time of the store output so that the loop gain of the bi-stable rises with the rise in supply voltage and reaches a state at which the loop gain is unity within the time that the output of the store appears at the bi-stable which is thus set according to the binary value of the output.
Patent GB-544738-A (GB)
Title: Improvements in or relating to trailer vehicles
IPC: B60S9/04
Filed: 1940-08-06
Abstract: 544,738. Tipping-vehicles; rest-bars. GRAY, E. T. Y. Aug. 6, 1940, No. 12647. [Classes 108 (i) and 108 (ii)] Two-wheeled trailers that are adapted to be tipped for discharging the contents, with respect to the draw-bar as described in Specification 530,153, are provided with means for supporting the body to take the load off the draw-bar to facilitate hitching the trailer to the tractor. The support may serve also for holding the trailer in the tipping position. As shown, a support 4 of angle section is pivoted at 2 to the front end 1 of the vehicle and is provided with a curved foot 5 whereby upon moving the vehicle forward a short distance after placing the support in the chain-line position, the load is taken thereby. The support may also serve to hold the body in a number of tipped 'positions by inserting a pin 13 through one of a number of holes 12 in the support and an aperture in the draw-bar 7. When not required for use the support may be detached and be carried by the draw-bar by means of the pin 13 and a hook 14. A prop 9 for holding the draw-bar in the coupling position may be provided and be normally carried by the draw-bar in the chain-line position. The support as shown is positioned near one side of the draw-bar but supports may instead or in addition be provided at the front corners of the vehicle. Reference has been directed by the Comptroller to Specifications 239,774 and 247,770, [both in Class 79 (iii)].
Patent GB-541475-A (GB)
Title: Improved crane suitable for erecting and launching bridges and similar girder constructions
IPC: B66C19/00
Filed: 1941-04-11
Abstract: 541,475. Cranes. INGLIS, C. E., and KRYN & LAHY (1928), Ltd. April 11, 1941, No. 12647. Divided out of 540,945, [Group X] [Class 78 (iv)] A crane for use in the erection of bridges &c. is constructed with a frame built up from metal tubes 53 of equal diameter and length connected by junction boxes 54 to form two laterally spaced triangular frameworks connected by transverse tubes 55 joining the laterally opposite junction boxes. Some of the base junction boxes are provided with depending pedestals 63 fitted with wheels 56 running upon rails 57. A lifting gear 62 is supported at one end upon tubes 53a stayed by wire ropes 59 led over pulleys 58. The tubes may be so mounted in the junction boxes 54 as to project upwardly at an angle of 60 degrees. The tube extension at the opposite end of the framework serves to balance the lifting gear.
Patent GB-436897-A (GB)
Title: Improvements relating to vehicle brake linings
IPC: F16D69/04
Filed: 1934-04-27
Abstract: 436,897. Brake shoes. PANTON, C. A., 12, Herdston Place, Cumnock, Ayrshire. April 27, 1934, No. 12715. [Class 103 (i)] Brake shoes of the kind adapted to be applied to the interior of a brake drum are provided with removable friction linings comprising two or more blocks 8 adapted to be received in a groove in the shoe 6 and each having at each end a tapering extension 8<a>, 9<a>, one of which engages in a corresponding recess in the groove while adjacent extensions are clamped by a wedge member 12 which tends to force the blocks apart and into the end recesses. The members 12 may be secured by a nut 10 on a fixed pin 11 or by a bolt passing completely through the shoe and having a nut on the underside of the shoe. Each shoe may have a series of blocks arranged in series or side by side. Cooling holes 13 may be provided in the blocks. The blocks may be of cast iron or of matted or woven strands. As shown in Fig. 3, the lining material 14 may be riveted to a pressed steel base 15 of inverted channel section provided with the tapered ends 18.
Patent GB-183942-A (GB)
Title: Improvements in the outer covers of pneumatic tyres
IPC: B60B21/12
Filed: 1921-05-04
Abstract: 183,942. Carpmael, W., (Michelin et Cie). May 4, 1921. Jackets and covers.-To prevent nipping of the air-tube between the edges of the cover and the rim, strips 3 of rubber or other elastic material, shaped at shown, are secured to the inner faces of the cover edges 1.
Patent GB-624084-A (GB)
Title: Packing of plastic material for pharmaceutical tubes or the like and similar objects
IPC: B65D5/50
Filed: 1946-04-29
Abstract: 624,084. Packing for fragile objects. NICOLLE, C. April 29, 1946, No. 12828. Convention date, Feb. 19, 1945. [Classes 18 and 94(i)] A packing of plastic material for fragile tapered objects comprises a recessed sheet having at the tapering end of the recess a clearance or cut to facilitate the removal of the contents. The sheet may have a depression 4 at the end of each recess 2, or the depressions may be joined to form a continuous channel. The sheet may be cut away to clear the ends of the objects 1. The contents may be protected by ribbing or protuberances on the recesses 2, and a further sheet similarly recessed may be secured to the first sheet to enclose the contents. This second sheet may wholly or partially cover the contents and may have notches to facilitate its tearing as the contents are removed. The second sheet may be applied when the contents are in position or may be slotted or discontinuous to enable the contents to be fitted in after the sheets have been secured together. The packing may be double ended and may have a cut out portion 18 in the lower sheet permitting the portion corresponding to the tapered end of the objects contained therein to be hinged back to enable them to be entered between the two sheets. The entry of the objects may also be facilitated by slots in the lower sheet. Alternatively, a double-ended packing may be made in two halves forming an upper and a lower sheath encasing the contents. The top sheet may be transparent.