baber/WOPTO huggingface dataset:
Patent GB-443720-A (GB)
Title: Device to facilitate the speedy changing of hutches at "landings" of balance inclines used in mines
IPC: E21F13/02
Filed: 1934-08-25
Abstract: 443,720. Handling trucks in mines &c. LAFFERTY, P., Bellfield, Upper Bridge Street, Stirling. Aug. 25, 1934, No. 24510. [Class 78 (iv)] In the hauling of empty trucks up and lowering of loaded trucks down an inclined path or vice versa on a system which serves several loading - stations or platforms, special means are provided for transferring trucks between the inclined path and the platforms. The haulage-rope R, Fig. 1, which raises the empty truck E by means of a balance weight BB or of winding-gear, has two points of attachment for the trucks ; a short chain V<1>, Fig. 6, for attachment of the empty truck and a longer chain V<2> for attachment of the loaded truck. In operation, the unloaded truck is raised past the landing until the way is clear for the full truck F to be run from the landing on to the turntable P and then turned into alignment with the inclined track. It is then hooked on to the longer chain and the full truck is lowered while the empty one is temporarily supported by blocks, so that the downward movement unhooks the empty truck either automatically or semi-automatically so that it can be diverted on to the landing in passing same. The reverse procedure takes place at the bottom of the inclined way. Several modified constructions of chain are described which all provide the two spaced attachments for the trucks. In one case a chain of the usual type provides one attachment point and a clip on the haulage rope itself provides the other.
Patent GB-1171215-A (GB)
Title: Gas Connector for Gas Pipes
Inventor: SURTEES HAROLD KEITH
IPC: F16K11/083
Filed: 1967-05-26
Abstract: 1,171,215. Valves junction pieces. NORTH THAMES GAS BOARD. 22 May, 1968 [26 May, 1967], No. 24644/67. Headings F2G and F2V] A multi-way connecting piece for gas supply lines has a rotary conical or cylindrical valve member 15 which, in the position shown, connects inlet 3 with a combined pressure governor and filter unit 20 via annular port 6. Return flow from unit 20 enters port 7 and passes through passage 27 in the valve member to annular port 9 feeding meter 21. Return flow from the meter enters port 10 and passes through passage 28 in the valve member to outlet 13. Rotation of the valve member shuts off inlet 3 and passages 26, 28 bridge ports 6, 7 and 9, 10; the latter all being concentric. A pressure gauge can be fitted at 30. In a modification, an axially slidable cylindrical valve member is used.
Patent GB-598340-A (GB)
Title: Lamps for cinematograph studios
IPC: G03B15/02
Filed: 1945-09-24
Abstract: 598,340. Studio lamps. HEWITT, N. E. Sept. 24, 1945, No. 24693. [Classes 75 (ii) and 75 (iv)] In a studio lamp comprising a casing in two parts, the front part 12 is provided with guides 17 to receive a frame 18 for a reflector 20 and light source 19, the frame being adjustable by means passing through the rear part 16 which carries the reflector and light source. The rear part 16 may have transverse bars 24 carrying a part 25 of the frame 18, the part 25 having an internal thread adapted to be engaged by a screw 30 having a knurled head 33 so that the frame 18 may be axially adjusted in the guides 17. The rear part may be shaped to complete the front part, which may be a truncated ellipsoid, and the parts may be connected by swing bolts 23 provided with butterfly nuts or. with spring-controlled heads, or, alternatively, spring clips or lever clips with camshaped barrels may be used. A manually removable stop may be provided to prevent separation of the parts, and a flexible plastic strip 34 bearing letters or numerals may be arranged to slide past a window in the casing to give a visual indication of the adjustment of the light source and reflector, or the adjusting means 30 may be connected with a numbered disc for the same purpose. The frame 18 may have a yoke 22 integral with a bulb holder 26 or passing through it so that the bulb may be adjustable transversely on the yoke, the holder also being provided with a vertical screwed sleeve carrying the bulb to allow it vertical adjustment. The main casing may be made from hollow, ribbed, perforated channel members to provide convection and circulation of the air, and the light source, which may be an incandescent filament lamp, an electric arc, a mercury vapour lamp, a Nernst light, a limelight or other source, may be surrounded by an annular screen forming the inner wall of a vacuum chamber as described in Specification 598,308. According to the Provisional Specification, the front part of the casing may be detachable and may carry the reflector and light source.
Patent GB-948807-A (GB)
Title: A hydro-pneumatic vehicle suspension unit
IPC: C08F8/00
Filed: 1961-07-08
Abstract: 948,807. Vehicle suspensions. D. A. AVNER. July 8, 1961, No. 24808/61. Heading B7D. [Also in Division F2] The hydro-pneumatic suspension of Specification 869,132 is modified by the provision of a diaphragm or other flexible or resilient member separating the liquid and gas in the pressure chamber and by the provision of a flexible bag containing air or other gas in the reservoir. The device comprises a pressure chamber 10 in which the gas and liquid portions are separated by a diaphragm 14 and into which air under pressure may be introduced initially through a oneway valve 13, the liquid chamber communicating with the interior of a cylinder 17 through passages 22 damped by discs 23 and 24. The fluid reservoir 19 comprises the annular space between cylinder 17 and the shell 18 of the device and contains a bag or bags 41 containing air. A piston 25 connected to a piston-rod 26 operates within the cylinder, there being passages 35, 39 controlled by a spring-loaded one-way valve 36 connecting the annular space 31 between the piston-rod 26 and cylinder 17 with the space above the piston. The space 31 is also connected with the reservoir 19 by passages 32 controlled by one-way valves 33 and the reservoir and the space at the top of the cylinder 17 are connected by a hole or holes 42 determining the level of constant height. The body portion of the device is connected to the vehicle body and the connecting rod 26 is connected at 43 to the vehicle axle. The diaphragm 14 may be replaced by a flexible or elastic bag. In operation, the reservoir, cylinder and lower part of the pressure chamber are filled with liquid. Load applied to the vehicle compresses the air in the pressure chamber. As the vehicle vibrates due to shocks in transit, liquid is forced from the reservoir to the space above the piston and into the pressure chamber, increasing the length of the device, until the piston uncovers the holes 42 at which point liquid is restored to the reservoir and a constant riding height is maintained.
Patent GB-909453-A (GB)
Title: Explosion-proof enclosure for centrifuges and the like
IPC: B04B5/04
Filed: 1961-07-10
Abstract: 909,453. Centrifugal separators. SORVALL, Inc., IVAN. July 10, 1961 [July 1] 1960], No. 24907/61. Class 23. Protection against accidental fracture of a centrifuge rotor 14 when rotated at high speed is provided by an enclosure consisting of a vertical cylindrical wall 12 mounted on a horizontal base-plate 21 and secured internally at its bottom, e.g. by welding, to an anchor ring 26 which extends partially between the base-plate 21 and a horizontal circular plate 28 mounted on the base-plate 21 with its outer peripheral portion spaced apart from the base-plate and from the wall 12. The ring 26 is attached to the base-plate 21 by a number of shear pins or bolts 25. The plate 28 is annular and is secured by bolts 29 to an annular boss 27 formed on the base-plate 21. The rotor 14 is driven through a shaft 16 by a motor supported in a ring 18 mounted on an annular lip 22 in an aperture in the base-plate 21. A lip seal 33 secured to the plate 28 bears on the shaft housing 17. A resilient ring 38 is placed between the plate 28 and the wall 12 to act as a seal and as a sound-absorbing medium. The open end of the wall 12 is enclosed by a cover 43 pivoted on the wall at 49 and locked in position by means of a hook 50 and a latch 52, 53. The cover is provided with an inwardlyextending annular lip 46 which rests on the bottom of an annular recess in the wall 12 and is spaced from the vertical wall 41 of the recess. The wall 12 is made of steel which is sufficiently ductile to allow bulging out of the wall under moderate impacts of rotor fragments should the rotor fracture accidentally during highspeed rotation. In case of severe impacts the pins or bolts 25 are sheared and outward movement of the wall 12 provides a shock-absorbing action. This outward movement is stopped as the wall 41 of the recess engages the lip 46 of the cover. Pivotal movement of the wall is prevented by the ring 26 engaging with the plate 28.
Patent GB-498250-A (GB)
Title: Separation of gas from liquid in thermal elements and other apparatus
IPC: B01D19/00
Filed: 1937-09-13
Abstract: 498,250. Centrifugal separators. RAMSEY, A. R. J. (Automatic Control Corporation) Sept. 13, 1937, No. 24923. [Class 23] Light and heavy substances in tubes are separated by centrifuging, the tubes being arranged radially with respect to the main axis of rotation, while each tube makes a subsidiary rotation about its own axis. The arrangement is applicable to thermostat units and similar apparatus. The driving motor has a vertical spindle 13 and is enclosed in a casing 11 with bearings 17 on its upper face on which rotates a disc 15 attached to the spindle 13. The disc carries split brackets 18 containing bearings 19 in which are supported tubes 20 carrying bevel gear-wheels 27 meshing with the gear 25 secured to the top of the casing 11. The outer end of each tube 20 carries a cup element 21 which can be closed by a screw plug 22. The thermostat unit has a bulb 30 connected by a capillary tube 31 to the space between cup-shaped diaphragms 32, 33, at least one of which is flexible ; radial corrugations may be provided in the diaphragms. The unit is charged with liquid and placed in the tube 20 with the open end of the bulb inwards, so that the diaphragms rest in the cup 21. The plug 22 is then screwed in to rest firmly against the diaphragm 33, and the motor is started. The gearing causes a rotation of the tubes about the motor axis so that centrifugal force acts longitudinally outwards through the units, and also a rotation of each tube about its own axis so that centrifugal force acts radially outwards in the diaphragm chamber. The liquid is thus forced outwards, and gas is forced inwards to escape from the bulb which can then be sealed.
Patent GB-498613-A (GB)
Title: Improvements in the construction of and disposition of parts on motor road vehicles
IPC: B62D31/02
Filed: 1937-09-14
Abstract: 498,613. Motor vehicle bodies. LEYLAND MOTORS, Ltd., and PILKINGTON, V. W. Sept. 14, 1937, No. 24972. [Class 108 (i)] [Also in Group XXXI] To enable large passenger and other vehicles to be built so as to afford the driver a near view of the road ahead and on each side, the engine is placed behind the front wheels, under the floor, with its cylinders and crankshaft substantially horizontal, and the radiator is set back alongside and lower than the driver's seat, which is located in a cab glazed to or nearly to its floor level and extending only to the centre line of the vehicle, the coachwork 24 in front of the radiator thus being reduced substantially to the outline of the front wings. The engine 1 is placed beneath the chassis longitudinals 2, 3, in rear of the front wheel springs, the crankshaft axis 6 being preferably to the off side of and parallel to the centre line of the chassis, with the cylinders 9 projecting outwardly and the crank chamber 8 extending upwards. A sump 7 and oil pump 10 are shown. A pin on the front end of the cylinder block, mounted in a rubber bushed support 13 on a cross frame member 11, and a tubular trunnion of large diameter surrounding the rear universal joint, mounted in a bonded rubber bushing in a bracket 14 secured to a second cross frame member 12, provide pivots for the engine, allowing rocking about air axis passing through its centre of gravity, excessive oscillation being prevented by a limiting stop on the rear trunnion projecting between rubber abutments on the frame cross member. The gearbox or torque converter 15 may be arranged to the rear of the trunnion mounting 14 as shown or may form a unit with the engine block in front of the mounting. The radiator 16 is set back, either in front of or behind the axle 17, or if of reduced height, it may be placed above the axle or, with independently sprung-front wheels, it may be anchored upon a cross frame member. The driver's cab, glazed on three sides nearly to floor level, extends from the off side to the centre line of the vehicle, the floor being level with the upper part of the radiator and normal access being provided by a sliding door from the interior of the vehicle. The near side window 25 is arranged to swing outwards serving as an emergency exit.
Patent GB-1045299-A (GB)
Title: Wire drawing and like processes
Inventor: BRYAN HARRY NORMAL COLIN
Filed: 1964-06-16
Abstract: 1,045,299. Drawing; rolling. BRITISH OXYGEN CO. Ltd. June 11, 1965 [June 16, 1964], No. 24977/64. Headings B3M and B3P. In a wire drawing or like operation in which metal is passed through a die or through forming rolls, sodium hydroxide is used as a drawing lubricant. A conventional drawing lubricant, such as an oil, a soap or tallow, is preferably used during the initial drawing stage and sodium hydroxide during the following drawing stages. The process is suitable for the drawing of wire having a core of welding flux for use in electric arc-welding.
Patent GB-841142-A (GB)
Title: Improvements in or relating to separable fasteners constituted by two flexible strips for the closure of bags or for like purposes
IPC: B65D33/25
Filed: 1956-08-15
Abstract: 841,142. Flexible strip fasteners. SOC. DES PRODUITS INDUSTRIELS NOUVEAUX. Aug. 15, 1956 [Aug. 18, 1955; Jan. 20, 1956; Jan. 25, 1956; March 28, 1956], No. 24984/56. Class 44. A fastener comprises two similar strips each having a middle portion with at least two grooves 1 and at least two ridges 2, and flat extensions 3, 3a constituting the marginal portions on either side of the middle portion, the ridges and grooves being complementarily formed for interengagement and the extension 3a being level with the tops of the ridges and the extensions 3 level with the bottom of the grooves, the extensions 3, 3a being of approximately the same width between the middle portions and the free edges. In Figs. 2, 3 and 9, not shown, the fastener is used to close a bag, and in Figs. 4-6, not shown, the edge of extension 3a is cut, to distinguish it from extension 3, by a tool, Fig. 8, not shown.
Patent GB-813803-A (GB)
Title: Improvements relating to etch-resistant materials and etching methods
Inventor: FRANKLAND ALBERT ERNEST
IPC: C23F1/02
Filed: 1955-08-31
Abstract: 813,803. Etching. SAUNDERS-ROE Ltd. Aug. 31, 1956 [Aug. 31, 1955], No. 25054/55. Class 100(2) An etching resist consists of a solution of bitumen and oil-reactive resin. The solvent may be xylene. The bitumen may be that known under the Registered Trade Mark "Gilsonite", and may be present in the proportions 7¢-20 per cent, preferably 10 per cent, of the resin. The resin may be a phenolic resole, an alkyl resin, or a maleic resin, e.g. the reactive resin based on para tertiary butyl phenol, or a glycerol esterified resin modified maleic resin. An example is 10 parts pure phenolic resole, 100 parts Gilsonite bitumen. For etching a metal surface, the design area is masked, the resist coated over the unmasked surface, and the mask removed, e.g. the outline of the design is printed, the surface is covered with a transparent material, such as Saro-film, and the material is removed from the non-design areas. Alternatively, the resist may be applied by hand. Example. In a method of reducing the thickness of part of the area of a sheet of aluminium, the sheet is given a hot alkaline wash, a dilute nitric acid wash, a cold water rinse, and dried. The design is litho-printed on the sheet, which is then sprayed with Saro-film, and dried for 30 minutes at ambient temperature. The film is cut by hand round the printed area and that part covering the area not to be etched is peeled off, leaving a mask. The sheet is. sprayed with a primer and airdried at 70‹F., and is then covered with the resist in a series of thin coats, being dried between each coat at 70‹F. for 30 minutes. The mask is removed and the sheet dried in air for 12 hours, and then etched at 70‹C. with a 10 per cent solution of caustic soda to which may be added wetting and oxidizing agents as desired. The sheet is then rinsed in cold water, then in 5 per cent aqueous solution of nitric acid at room temperature to remove black oxides and neutralize caustic soda action, then in hot water, then in an agitated bath of xylene at 20-50‹C to remove the resist. The bitumen is recovered by distillation for re-use. The solvent can be used continuously. The primer may be removed or not from the sheet. Alternatively, the mask may be applied by fitting a suitably-shaped piece of masking tape to the sheet before applying the resist.
Patent GB-1476118-A (GB)
Title: Semiconductor laser device and method of manufacture
IPC: H01S5/227
Filed: 1975-06-11
Abstract: 1476118 Semiconductor lasers NIPPON ELECTRIC CO Ltd 11 June 1975 [11 June 1974] 25081/75 Headings H1C and H1K A stripe geometry double heterostructure laser is formed from an initial semiconductor structure, Fig. 3a, comprising an n-GaAs substrate on which a first layer 32 of n- Al x Ga 1-x As and a laser active second layer 33 of p-Al y Ga 1-y As (0#y<x) are successively grown by liquid phase epitaxy, the second layer being partially masked by a strip 34 of heat and acid resistant material which defines the striped geometry, and the unscreened portions of the second layer being then removed as shown in Fig. 3b by melting back into contacting semiconductor material, the remaining stripe portion 330 of the laser active layer and its screening strip being subsequently surrounded by liquid phase epitaxial growth of a further layer 35, Fig. 3c, of n-Al z Ga 1-z As (y<z, x=z). As described the further layer is formed by cooling the same semiconductor material in which the unscreened portions of the second layer are melted back. Suitable masking materials are silicon oxide, silicon nitride, silicon carbide, tantalum oxide and AlGaAs oxide.
Patent GB-894629-A (GB)
Title: Improvements relating to grids for electronic valves
Inventor: WHITAKER ALFRED
IPC: H01J19/00
Filed: 1958-08-05
Abstract: 894,629. Thermionic valves. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 23, 1959 [Aug. 5, 1958], No. 25083/58. Class 39 (1). In an electronic valve grid frame comprising a rectangular structure constituted by side and cross members 2, 3, the side members 2, which support grid wire 1 under tension, are supported against inward bowing by providing a plurality of spot welds 4, 5 at each intersection between the side and cross members.
Patent GB-241018-A (GB)
Title: Improvements relating to the manufacture of vitreous enamel signs, tiles and the like
IPC: C04B41/50
Filed: 1924-10-22
Abstract: 241,018. Scott, G. M. Oct. 22, 1924. Vitreous enamelling; enamels.-An enamel for squeezing through a stencil of silk used in the. process of manufacturing signs and the like described in Specification 198,837, is made by mixing the frit or quartz-like material and the colouring matter to a damp powder with both mineral and vegetable oils and then working up the powder to a pasty consistency with the aid of a mineral grease or jelly. As an example the mixture may comprise 30 parts by weight of paraffin oil, 3 parts of tallow, and 1 part of oxidized linseed oil with sufficient petroleum jelly to form the pasty mass. If a thickened substitute such as litho-varnish be used instead of ordinary linseed oil the tallow may be omitted. The addition of the petroleum jelly may be made in two stages at intervals of a few days. The first addition of jelly causes some of the paraffin oil to separate out to the top of the mass. This is drained away before the additional jelly is added.
Patent GB-1037266-A (GB)
Title: Method of and system for electrical impulse counting for use in digital voltmeters, counters and the like
IPC: H03K21/08
Filed: 1963-06-25
Abstract: 1,037,266. Semi-conductor pulse circuits. UNITED STATES SCIENTIFIC INSTRUMENTS Inc. June 25, 1963 [June 27, 1962], No. 25227/63. Heading H3T. [Also in Division G4] A decade counter comprises a bi-stable flipflop 302 and a staircase wave-generator 311 comprising five tunnel diodes 304a-304e in series. The tunnel diodes have different peak currents so that they fire to successive impulses from the flip-flop, the last turning on transistor T through delay line D, so extinguishing them all. An input-signal at 1 (Fig. 1A, not shown) is compared with a reference signal obtained from a ramp generator 19 on the occurrence of pulses from an oscillator 9 to produce output pulses depending in polarity upon which signal is the greater. The circuit comprises two symmetrical transistors I, I<SP>1</SP> connected in series across the input signal source with the reference signal applied to the common point of the transistors and the pulses to the bases. The output pulses are fed to a differential amplifier through a transformer having adjustable primary circuit balancing resistors. A frequency divider (Fig. 1A, not shown) comprises an input transistor 2 fed with pulses from the differential amplifier 7 and coupled through a diode pump circuit to a unijunction transistor 29 which " fires " when the main capacitor 12 of the pump circuit reaches a predetermined voltage. A series diode D1 appropriately biases the emitter of transistor 2.
Patent GB-647590-A (GB)
Title: Improvements in or relating to a process for treating fish press liquor and the product resulting therefrom
IPC: A61K31/16
Filed: 1947-09-16
Abstract: A vitamin concentrate is obtained by treating fish press liquor, after removing the free oil, with a chemical coagulant known to be capable of coagulating readily coagulable proteins, e.g. aluminium sulphate, ferric chloride, tannic acid or preferably sulphuric acid, treating the liquor to remove oil freed by the coagulant and concentrating the resulting liquor.  The coagulated protein material may be separated and the resulting serum treated with an adsorptive agent, e.g. fuller's earth, to adsorb the water-soluble vitamins. Prior to the removal of the coagulated protein the process is carried out at a temperature in excess of 150 DEG  F.  Preferably an acid coagulant is used which will produce a pH between 4 and 5.  A suitable apparatus is described with corresponding drawing.
Patent GB-893578-A (GB)
Title: Method and apparatus for removing the won material from galleries
IPC: E21F13/02
Filed: 1958-08-07
Abstract: 893,578. Endless-chain conveyers. GEWERKSCHAFT EISENHUTTE WESTFALIA. Aug. 7, 1958 [Aug. 7, 1957], No. 25409/58. Class 78 (1). A double-chain scraper conveyer 2 has plates 10 hinged at 4 to the sides of it and respective piston-cylinder apparatus 11 for tilting them towards the conveyer. The conveyer is advanced to the head of the mine gallery before a blasting operation with the plates in horizontal position. After blasting the conveyer is started and the plates tilted so that the won material slides gradually into the conveyer. The hollow pivots 4 serve as conduits for supplying the pressure medium to the respective pistoncylinder apparatus 11.