baber/WOPTO huggingface dataset:
Patent GB-146467-A (GB)
Title: Improvements in adjustable or self regulating propellers
IPC: B64C11/06
Filed: 1920-07-05
Abstract: 146,467. Wesnigk, E. April 20, 1918, [Convention date]. Screw and like propellers. -A supplementary small propeller on the main propeller boss is used for feathering the blades of the main propeller and a centrifugal governor is fitted to effect the operation automatically. The main blades 10 are secured in metal sockets 9 by wedges 12, and flanges on the socket form ball bearing surfaces coacting with flanges 7. These flanges are secured together by bolts 4 passing through tubes 6 secured to a flat plate. On an extension 2 of the main hub a small propeller is mounted comprising boss 20 and blades 22 having nuts 23 which screw on to studs 21. External sleeves 24 have teeth which mesh with toothed rods 25 on a sliding plate 26 which is supported endways by a ball bearing 27, the bearing plate 28 being adjustable in position by a centrifugal regulater comprising two flat springs 29 carrying blocks 30. For rotating the main blades, bevel wheels 18 on the sleeves 9 mesh with a bevel 19 on a sleeve passing to the hub 20. When the main propeller runs too fast, the weights 30 fly out and draw back the plate 28 which in turn . increases the pitch of the supplementary propeller, with result that the latter revolves slower and by its relative movement actuates the bevels 18, 19 and alters the main blade pitch until the normal speed conditions are attained. In a modification, worm and worm wheels replace the bevels used for altering the pitch of the main blades and chain, and spur pinion, or friction disk gearing drive the worms. The supplementary propeller blades are fixed with no pitch and are moved longitudinally by centrifugal gear to bring the gears on the small propeller into engagement with the pitch changing gears of the main propeller. A spiral spring controls the centrifugal governor, and may itself be adjusted by the aircraft pilot to change the normal number of propeller revolutions.
Patent GB-1112418-A (GB)
Title: Magnetic transducer head and method of making the same
IPC: G11B5/17
Filed: 1965-05-03
Abstract: An amalgam alloy is formed by kneading a composition containing 69% silver, 26% tin, 4% copper and 1% zinc in a mortar with mercury by weight ratio of 1:1.6 at a rotating speed of 120-160 r.p.m. for 40-60 secs.  The resulting product is squeezed in a gauze to remove the excess of mercury.  The amalgam alloy obtained is electrically conductive and hardens in 1-2 hours.
Patent GB-659086-A (GB)
Title: New or improved apparatus for the preparation of perspective drawings
Inventor: RODWAY CECIL GEORGE REEDON
IPC: B43L13/14
Filed: 1948-07-12
Abstract: 659,086. Drawing-appliances. HOLMES BROS. (LONDON) Ltd. July 12, 1948, No. 18646. [Class 97 (iii)] [Also in Group XV] As shown, apparatus for the preparation of perspective drawings comprises two bars 20, preferably slidably mounted on a board or table 14, and guide means 21, representing the vanishing points on the eye-level, which are movable along each bar 20 and from which extend two flexible metal rules 32, 33 pivoted at their inner ends to a point 31 on an extension 30 of the vertical arm of a set-square 10. This latter is preferably connected to a linkage mechanism 11 which is pivoted at its other end to a fixed bracket 12, so that the set-square may be moved about while maintaining a predetermined angular relationship with the edges of the table 14, the setting of the set-square being adjustable by a knob 39. Each guide means 21 comprises a drum 22, and the ends of the rules 32, 33 are secured to spring-loaded bobbins arranged in the drums 22. Movement of the set-square 10 to the right oi left results in the automatic change of length of the two rules 32, 33, and the latter, when the point 31 is superimposed over the ends of a vertical line, represent the apparent inclination of horizontal lines. The bars 20 are slidable along a rod 15, whereby the perspective of the drawing may be altered from the acute to obtuse; movement of the guide means 21 along the bars 20 varies the effective view point. According to the Provisional Specification, instead of two vertical bars 20, one horizontallydisposed bar is provided which is clamped by extensions to the ends of the table, and guide means 21 are slidably mounted in these extensions for adjustment towards each other. The rules 32, 33 may be replaced by thin cords or wires passing over guide pulleys pivotally mounted on the bar, small plumb weights being attached to the ends of the cords.
Patent GB-809483-A (GB)
Title: Facsimile optical scanning system
IPC: H04N1/06
Filed: 1956-06-15
Abstract: 809,483. Copying-telegraph transmitters. CREED & CO. Ltd. June 15, 1956 [June 20, 1955], No. 18663/56. Class 40 (3). In a facsimile transmitting apparatus in which the matter to be transmitted is on the inside surface of a blank wrapped in cylindrical shape and is scanned by a rotating mirror mounted within a casing forming a light shield for the mirror, the shield is provided with an opening through which the scanning beam passes to the inner surface of the blank and through which the diffusely reflected light from the blank passes to the mirror and along a path including that of the incoming or incident scanning beam to a short focus collector lens which concentrates on to the light-sensitive element of a photo-electric device, the diffusely reflected light impinging on and reflected by the rotating mirror. The beam b from a tungsten light source 40 passes via lens 48, stop 49, aperture 50 and a further lens 52 to a mirror 60 from which it is reflected to a mirror 28 mounted in a shielding housing 24 which is formed with a flange 25 and the scanning aperture 30, and is carried by a shaft 26 rotated at scanning speed. The blank t is mounted on a transparent cylinder 10, preferably of Lucite, with a wrapper 18 which may pass around a tensioning roller 20. Each end of the cylinder 10 has a groove 10a associated with supporting rollers 12 which, together with the roller 20 are mounted in end arms 141 of a frame 14 which slides on a shaft 17 and which, during the scanning operation, is traversed to the right against a spring 16 operating to return the carriage 14 to its normal left-hand position at the end of the message. The mirror 28 is set at an angle less than 45 degrees, e.g. 34 degrees, to the direction of the incident beam, and the aperture 30 is sufficiently large to pass the cone b<SP>1</SP> of reflected light delimited by the opening at the end of the shield 24. The reflected cone b<SP>1</SP>, which embraces the incident beam b, is focused by the double Fresnel lens 62 on to the photo-sensitive cathode 64 of a multipler cell 66. The mirror reflection from the surface of the blank is diverted to the left of the opening 30, and the reflections from the inner surface of the transparent drum 10 are deflected by the mirror shield together with its flange 25 towards the left, i.e. in the direction opposite to that of the diffusely reflected cone b<SP>1</SP>.
Patent GB-613350-A (GB)
Title: Improvements in or relating to pipe expansion joints
IPC: F16L51/03
Filed: 1946-06-21
Abstract: 613,350. Pipe joints. METALLSCHLAUCHFABRIK AKT.-GES. June 21, 1946, No. 18722. Convention date, Oct. 8, 1945. [Class 99 (i)] An expansion joint comprises three aligned bellows, of which the central one, 52, is of larger diameter than the outer ones, 50, 51, the central bellows being adapted to contract when the outer ones expand, and vice versa. The end walls of the bellows comprise outer flanges 59, 60 which are fast on tubes 64, 65, and intermediate loose flanges 61, 62, the alternate flanges 59 and 62 being connected by bolts 67, and the alternate flanges 61 and 60 being connected by bolts 72. Bolts 67 and 72 enclose the bellows, are arranged alternately around the circumference of the joint, and are equally spaced. Securing rings 53 ... 58 connect the bellows members to the flanges with interposed packing 63. A sleeve 66 bridges the ends of the tubes 64, 65, the length of the tubes and sleeve being such that they act as limit stops.
Patent GB-721021-A (GB)
Title: Improvements in means for venting the crankcase of an internal combustion engine
IPC: F02B75/00
Filed: 1953-07-06
Abstract: 721,021. Venting crankcases. DAIMLERBENZ AKT.-GES. July 6, 1953 [July 5, 1952], No. 18740/53. Class 7 (2). The crankcase 10 of an engine, particularly a single cylinder horizontal engine, communicates by a duct 20 with a chamber 21 at the cylinder head 12, and a non-return valve 22 disposed on the chamber opens to the atmosphere when the internal pressure in the crankcase exceeds atmospheric pressure. The duct may enclose push rods 17 operating the engine valves 19 and controlled by a camshaft 16 geared to the crankshaft 15. The valve 22 may comprise a housing 23 screwed into a hood 13 defining the chamber 21 and closed by a plate 25 fixed in position by a ring 26, a valve plate 29 being closed onto a seat 28 either under its own weight or a spring, and the bore 24 of the housing being in communication with the atmosphere by radial ports 27. The plate 29 may be of sound-absorbing material such as " Novotext " (Registered Trade Mark), or may comprise fabric inserts.
Patent GB-187929-A (GB)
Abstract: 187,929. Webb, C. June 24, 1921. Drawings to Specification. Valves.-In an engine of the kind described in Specification 186,669, the cylinders are offset relatively to the crank shaft, and the admission of the charges to the pump space and the transfer of the compressed charges to the combustion spaces are controlled by rotary cylindrical valves. The transfer valves delay the delivery of the charges until after the opening of the exhaust ports.
Patent GB-791663-A (GB)
Title: Improvements in or relating to fibrous glass-reinforced polymeric styrene molding compositions
IPC: C08L25/06
Filed: 1955-06-29
Abstract: Compositions containing fibrous glass and polystyrene or copolymers of styrene with butadiene, acrylonitrile, a  - methyl styrene, nuclear substituted styrene and vinyl naphthalene or mixtures thereof with natural and synthetic rubbers, are obtained by coating the glass with a polymer emulsion, a suspension of 40 mesh to 30 micron particle size or an emulsion containing added polystyrene particles of this size, to give a dried composition containing at least 65 per cent polystyrene and not more than 35 per cent fibrous glass.  After coating the fibres may be cut into lengths and, if desired, mixed with further polymer pellets to form a composition which may be injection moulded.  The emulsions may contain wetting agents or thickeners such as morpholine oleate, sodium alkyl benzene sulphonate, alkali metal, ammonium and morpholine salts of polyacrylic and polymethacrylic acids, bentonite and clays, pigments and dyes.  In examples, glass roving, mat, yarn or cloth, which may be chrome sized, is coated by running it continuously through the polymer bath.
Patent GB-464728-A (GB)
Title: Improvements in and relating to supports for lamp shades or lamp globes or the like
IPC: F21V17/10
Filed: 1936-07-07
Abstract: 464,728. Mounting lamp shades &c. GENERAL ELECTRIC CO., Ltd., and BUSSEY, S. R. July 7, 1936, No. 18832. [Class 75 (ii)] A support for a lamp shade or globe with a central hole has two members 1, 6 each provided with one or more projecting arms 2, 7, 8 passing through the central hole, the members being relatively rotatable so that in one position the arms support the shade or globe and, in co-operation with a skirt 4 on the member 1, prevent its removal, and in another position permit the globe to be slipped from or mounted on the support. The member 6 carrying the arms 7, 8 is composed of two plates embracing the member 1. The arms 2, 7, 8 are phosphor bronze springs. A stop 12 is provided on the member 6 to limit rotation by abutting against the arm 2. A locking screw 14 in the member 1 is engageable with the arm 7 to lock the inner and outer members in position.
Patent GB-653467-A (GB)
Title: Improvements in or relating to sighting apparatus for the levelling of railway tracks
IPC: G01C5/00
Filed: 1948-07-13
Abstract: 653,467. Surveying-apparatus. LEMAIRE, M. H. July 13, 1948, No. 18839. Convention date, April 12. [Class 97 (ii)] Apparatus for surveying the level of railway tracks comprises a telescope 1, Fig. 2, and a levelling board 14, Fig. 6, the board being constituted by an apertured screen having a plurality of vertical scales 22 separated by the apertures 23, the portions of the screen above and below the zero line of the scales being differently coloured. The telescope and the board are carried on supports provided with resilient jaws 3, 19 secured to the rail and are adjustable in a vertical direction by means of racks and pinions located in their extensible supports and operated by knobs 9, 17. The amount of vertical adjustment is indicated on scales 7, 16. The telescope is adjustable about a horizontal axis 4 by means of a double-threaded screwed rod 26, 27 and co-operating nut 25. The ends of the screwed rod may be attached to the telescope body and to the supporting foot respectively by means of flexible steel strips for smoother adjustment. The optical axis of the telescope may be deflected through a right-angle so that the eyepiece projects vertically from the end of the telescope body. Specification 300,891, [Class 97 (ii)], and French Specification 913,100 are referred to.
Patent GB-883218-A (GB)
Title: Improvements in or relating to the antistatic treatment of flexible tubular films
Inventor: HOOD JOHN LAURENCE LINSLEY
IPC: H05F3/04
Filed: 1959-06-02
Abstract: 883,218. Discharging static electricity. BRITISH CELLOPHANE Ltd. May 20, 1960 [June 2, 1959], No. 18859/59. Class 35. [Also in Groups V, XVII and XL (a)] Static electricity on the inner surfaces of thermoplastic tubular film used for making bags (see Group XXII) is eliminated by ionising a captive gas bubble in a film either during the manufacturing process or afterwards. In a preferred embodiment, Fig. 6, the newly made film 10 is fed between a pair of nip rollers 25, 26 round a non-driven roller 27 between a pair of electrodes 31, 32 through nip rollers 28, 30 to a driven drum 29. A bubble of air is introduced between rollers 28, 30 and roller 27, which is ionised by applying an alternating voltage of about 12 kilovolts to electrodes 31, 32 which are 1 / 1  6 inch apart. The electrodes (Fig. 8) consist of thin-walled " Pyrex " (Registered Trade Mark) glass tubing coated on the inner surface with a conductive layer 33 of colloidal graphite. The electrodes 31, 32 are secured by clips 36 to arcuate channel members 34, 35 respectively, the latter member being pivoted to end plates 37, 38 whereby should any foreign matter on the film catch on channel member 35 it would release ball catches 43, 44 and member 35 would fall back to the position indicated in dotted lines in Fig. 8. Static electricity on the outer surfaces of the film is dissipated by conventional static eliminators 49, 50. In an alternative embodiment the electrodes consisted of brass tubing wrapped in a film of polyester and connected to a 50 c/s. 9-kilovolt source. Any known means of ionisation may be used.
Patent GB-1217194-A (GB)
Title: Colour processing
Inventor: ALCOCK DAVID GERALD
IPC: G03C7/42
Filed: 1968-07-24
Abstract: 1,217,194. Photographic bleach-fixing. ILFORD Ltd. July 16, 1969 [July 24, 1968; April 14, 1969], Nos.35340/68 and 18934/69. Heading G2C.  Exposed and colour-developed photographic silver halide colour materials are bleach-fixed with a bleach-fix bath containing as oxidizing agent a ferric chelate or a diaquo-tetramiminecobalt (III) complex and as silver halide solvent a thiosulphate or thiocyanate, the bleach-fix bath or a stop, wash or stop-fix bath with which the material is treated between development and bleachfixing containing a water-soluble selenocyanate e.g. potassium selenocyanate, a selenourea of the formula:- where R 1 , R 2  and R, are H or alkyl, at least one being H, e.g. selenourea or the N-methyl or N:N-dimethyl derivatives, or a selenouracil of the formula:- where R 5  and R 6  are H or one is H and the other is alkyl of 1-6 C e.g. 2-selenouracil. The selenium compounds improve the bleaching efficiency of the bleach-fix baths.
Patent GB-637500-A (GB)
Title: Process of and apparatus for metering a liquefied gas
IPC: G01F15/18
Filed: 1948-07-14
Abstract: 637,500. Liquid meters. LINDE AIR PRODUCTS CO. July 14, 1948, No. 18957. Convention date, Aug. 28, 1947. [Class 69 (i)] [Also in Group XXVI] A process for metering liquified gases of very low boiling points, such as nitrogen and oxygen, comprises the cooling of the meter 17 by the liquified gas or its vapour before commencing metering the liquid, and maintaining the pressure in the meter higher than its vapour pressure at the temperature of the source 11. The meter 17, which may be of the meshing-screw type described in Specification 584,460, may be mounted in the vapour of a receiver 14, in the liquid of a separate well, Fig. 2 (not shown), or in the vapour above the liquid 10 in the container 11. The pressure increase at the meter is either secured by using a pump 23, or pressurizing the supply in the container 11 by evaporating a portion in an external coil 30 and passing the vapour through a pipe 31 back to the container. The registering mechanism 18, of the meter is placed in a warm position outside the heat-insulating material 16. To transfer liquid from the container 11 to the receiver 14, valves 261, 21<SP>1</SP> and 29<SP>1</SP> are kept closed and valves 22<SP>1</SP>, 25<SP>1</SP> kept open so that when the pump 23 is started, liquid is circulated around and back to the container 10. Valve 26<SP>1</SP> is then opened, valve 251 closed and valves 271, 28<SP>1</SP> adjusted to proportion the discharge of liquid either into the gas space or into the liquid space of the receiver according to whether the pressure in 14 is to be increased, kept constant or decreased. Instead of using the pump 23, valve 22<SP>1</SP> may be closed, and, after pressurizing the container 11 by opening valve 29<SP>1</SP> and allowing liquid to flow through coil 30, valve 21<SP>1</SP> is opened to byepass the pump 23.
Patent GB-896582-A (GB)
Title: Improvements in mixing devices
IPC: B29B7/74
Filed: 1959-06-03
Abstract: 896,582. Mixing liquids in flow. HOOD, R. S. June 3, 1959 [Dec. 17, 1958], No. 18993/59. Class 86. [Also in Group XXX] In an apparatus for mixing liquids in definite proportions, the liquids are supplied under air pressure from reservoirs 10 (see Fig. 3, not shown) and 12 to adjustable-stroke metering cylinders 16, 18 respectively having piston rods 86, 88 pivotably connected to a rocking lever arm 22 oscillatable about a fulcrum 94 by a double-acting compressed-air cylinder 80. Electric limit switches 104, 106 actuated by lever 22 control a compressed air valve 52 which in turn controls the admission of air to the cylinder 80 and to cylinders operating the fluid flow control valves 64 (see Fig. 1, not shown), 56 and 70. The quantity of fluid supplied on each stroke of the arm 22 may be adjusted by altering the position of the switches 104, 106 and hence the travel of the arm and of the pistons in the cylinders 16, 18; while the ratio of the liquids may be altered by moving the cylinder 18 along the arm 22, with which its rod 88 has a slidable connection 92. The liquids are supplied to a mixing chamber 20, Figs. 8, 9 through outlet conduits 66, 74; they may be premixed in the passage 146 as shown in Fig. 10, or supplied separately to the mixing chamber 20, Fig. 9, which contains a stirrer 123 comprising a frusto-conical body 126 having helical ridges 128 and rotated by a shaft 124. The mixing chamber has a jacket having inlet and outlet nozzles 156, 158 and a helical baffle 154 for the circulation of cooling water. The mixing chamber may deliver into receptacles standing on an intermittently moving conveyer belt actuated by a switch 108 tripped by the lever arm 22 in its downward motion.
Patent GB-830164-A (GB)
Title: A bat game
Inventor: HOYLE FREDERICK WILLIAM
IPC: A63B59/02
Filed: 1957-06-17
Abstract: 830,164. Game - playing appliances. BOURNEMOUTH NOVELTY WORKS. Ltd. June 16, 1958 [June 17, 1957], No. 19033/57. Class 132(2) Competing players catch and throw a synthetic plastic hollow ball 18 having apertures 19 by a racquet of hollow form and endeavour to throw it through a ring 6 mounted on a stand. The racquet (Fig. 5), consists of a canvas part 11 having a back wall 12 and mounted on two canes 15 diverging from a handle 17. The stand (Fig. 1), consists of a boss 2 detachably mounted on tripod legs 1 and carrying a two-part column 3, 4. Ring 6 is a springy strip the ends of which are received in a sleeve 7 on the top of the column part 3. To lower the ring height, part 4 is removed.
Patent GB-151421-A (GB)
Title: Improvements in snap hooks and links
IPC: F16B45/04
Filed: 1919-08-01
Abstract: 151,421. Freeman, D. W. Aug. 1, 1919. Chain couplings.-A coupling- link has an opening C in one side, closed by a sliding-box F formed with a corresponding opening. The bar is retained by indentations I or by a pin and slot.
Patent GB-784445-A (GB)
Title: Improvements in or relating to the treatment of magnesium base alloys
Inventor: FISHER PHILIP ANDREW
IPC: C22C1/02
Filed: 1955-07-01
Abstract: Alloys containing at least 2.0 per cent Al and at least 85.0 per cent Mg are subjected to a grain refining treatment by introducing into the molten metal a mixture of fluorspar and paraffin wax in the proportions of 4.5 to 7.0 parts by weight of fluorspar to 1 part by weight of wax.  Preferably the quantity of wax used is 0.005-0.59 per cent by weight of the metal treated. The mixture may also contain fluxing materials, carbon and/or alloying substances.  Specifications 359,425, 606,072, 606,948, 608,941 and 608,942 are referred to.
Patent GB-1186045-A (GB)
Title: Metal Sheathed Resistance Heater Elements with Single-End Connections
IPC: H05B3/48
Filed: 1967-04-25
Abstract: 1,186,045. Sheathed electric heating elements. ELTRA K.G. LEICHT & TRAMBAUER. 25 April 1967 [28 April, 1966], No. 19076/67. Heading H5H. The ends of a heating winding 2 are directly connected, e.g. by soldering, brazing, sweating or clamping by means of a metal sleeve, to the cores 5a, 5b of a cable, the cover 4 of which is secured in the metal sheath 1 of the winding by compression. A three core cable may be used instead of the two core, the third core being connected to the metal sheath 1 to form an earth connection. The sheath 1 is filled with pulverized insulation 3 and its diameter reduced by hammers or rollers to compact the insulation and compress the sheath around cable cover 4. The heating coil may have insulating spacers threaded on it. The ends, e.g. 2c of the heating winding are preferably straight or of increased pitch to prevent undue heating of the plastics insulation of cable cover 4.
Patent GB-279568-A (GB)
Title: Improvements in road vehicle signals
IPC: B60Q1/34
Filed: 1926-08-03
Abstract: 279,568. Nix, A. Aug. 3, 1926. Road-traffic signals on vehicles.-Signal devices 15, 16 at the ends of a longitudinal shaft 11 extending from front to rear of a vehicle are operated through gearing 10 on a shaft 7 in geared connection with the steering column 2. A gear 8 on the shaft 7 may be declutched from the shaft by a handle 18, enabling the signals to be given by actuation of the handle. The members 15, 16 are preferably in the form of arrows having green and white, and red and white glazed surfaces. In addition, the rear arrow may have a section with green glazing adapted to be lit on release of the accelerator pedal 38 and a switch 39 enables the section to be separately actuated, while the other sections are lit automatically on operation of the signals.