baber/WOPTO huggingface dataset:
Patent GB-806385-A (GB)
Title: Improvements in or relating to the abatement of noise in gaseous currents
IPC: F16L55/033
Filed: 1956-02-07
Abstract: 806,385. Silencing gaseous currents. HIRSCHORN, M. Feb. 7, 1956 April 13, 1955], No. 3826/56. Class 7(2) A method of abating the noise level of gaseous currents comprises the steps of introducing a gaseous stream into a conduit along the central longitudinal axis thereof, alternately inducing portions of the stream to flow in opposite directions substantially perpendicularly away from the axis of the conduit and inducing those portions to flow in opposite directions substantially perpendicularly toward the axis of the conduit, and concurrently expanding the volume of the gaseous stream at selected points along the direction of stream flow. As shown in Fig. 2, the sound attenuation apparatus comprises a casing 24 circular or rectangular in crosssection and inlet and exhaust tubes 26, 27, the casing defining a chamber 28 centrally and axially of which is suspended by members 30 a divider 29 of circular crosssection and provided with a partition 36 of sine-wave form, the latter forming chambers 37, 38; the walls of the divider are perforated with holes 39 which cover about one fourth of the surface area of the divider. Annular chambers 33, 34, subdivided by radial partitions, are located adjacent the tubes 26, 27, the walls 31, 32 of those chambers having openings 41, 42. The apparatus is mounted on wheels 16, Fig. 1, for manouverability at airports and has an intake portion 18 removably connected to the exhaust 19 of a jet aircraft 21, and a vertical exhaust portion 23; diffusers and watercooling are provided for afterburner operation of the aircraft engine. Two or more of the silencing devices may be disposed in series. In a modification, (a) the silencer has three stages 54, 55 and 56, Fig. 6, arranged in series, the chambers 68, 69 and 72, 73 extending across the casing 53 and being subdivided by partitions, and the intake tube 91 being conical in form, the gas exit comprises two openings 96, 97, and (b) a group of silencers are assembled in series and in parallel, Fig. 8, the gaseous stream being apportioned between the silencers 101 in parallel and each part of the stream flowing upwardly through a series of superposed silencers.
Patent GB-633261-A (GB)
Title: Improvements in and relating to the withering of tea
IPC: F26B1/00
Filed: 1948-02-10
Abstract: 633,261. Withering of tea. KERR, W. A. Feb. 10, 1948, No. 3867. [Class 129] Tea is artificially withered by mechanically milling the leaf with sufficient force to bruise it without crushing it, and then treating it under vacuum in a closed vessel internally heated to a temperature approaching but not exceeding 100‹F. Tea leaf is spread by a paddle-type device 12 over a belt conveyor 10 which feeds the leaf between a pair of oppositely rotating fluted rollers 1 pressed together by spring means 2. The milled leaf is discharged into a vessel 3 provided with detachable covers 4 and 5, an internal heating coil 6 and a vacuum pump 19. The vessel, when full, is sealed and subjected for a period of 2 to 4 hours to a minimum vacuum of 16 inches of Hg., the maximum inlet temperature of the heating medium being 100‹F.
Patent GB-566296-A (GB)
Title: Improvements in or relating to gear-cutting machines, and gear-cutting attachments therefor
IPC: B23F5/22
Filed: 1943-03-10
Abstract: 566,296. Gear-cutting. GUDGEON, S. J. March 10, 1943, No. 3923. [Class 83 (iii)] A gear-cutting machine of the rotarycutter continuous indexing type has a driving shaft, which is preferably the cutter shaft, driving change - speed transmission gears from which the drive is split into two branches, whereof one drives the work through dividing gears and the other drives a lead screw for the work-table feed through change gears, the change - speed transmission gears comprising three sets of change gears in series for (a) varying the machine constant, (b) varying the speed of the work rotation, and (c) for varying the drive from the first set to the third set. The machine comprises a standard 11 supporting the shaft 24 which is driven by a belt 46 from a motor 42 and rotates the hob 40 carried by an arbor 25 mounted in bearings 36, 38 on an overarm 34. The work A is carried by a spindle 18 supported by a headstock 20 and tailstock 21 on a table 22 which is angularly adjustable about a vertical axis on a slide 14 transversely movable on a support 12 by means of a lead screw 16. The support 12 is vertically adjustable on the standard 11 by a screw 15 and a hand-operated shaft 19. A pinion 110 on the cutter shaft 24 drives the work spindle through change gearing 114, Fig. 7, a universally jointed shaft 26, transverse shaft 60, vertical shaft 64, bevel gears 67, shafts 68, 72, 76 and worm gearing 79 on the work spindle 18. The gearing 79 is the dividing gear, gearing 114 the change speed transmission gearing, and the change gears 110, 112 and 120 are for producing respectively the variations a, band c referred to above. The lead screw 16 is driven from the shaft 26 by spiral gearing 104 (whereby the drive is split), shafts 102, 98, change gearing 96, a universally jointed shaft 28, shaft 86, bevel gears 82, vertical hollow shaft 80 and bevel gears 85 connected to the screw, the shafts 64, 80 being coaxial with the rotatable work-table 22 so that the latter may be adjusted angularly for cutting helical wheels &c. The support 12 is adjusted vertically to suit the diameter of the work and to set the required depth of cut, the change gears 96, 114 are adjusted to give respectively the required rate of axial feed and speed of rotation, in relation to the cutter rotation, to the work, and the machine may then be started to operate automatically on the work until it is completed. The system of gearing and articulated shafts may form an attachment to an existing standard or universal milling machine having a work-table rotatable through 90 degrees or 180 degrees, and the machine is stated to be suitable for screw milling, or cutting spur gears, internal spur gears, helical gears, circular racks, clutches, face gears, bevel or mitre gears, spiral gears and worm-wheels. The method of selecting the change gears to suit the' number of teeth in the work and the desired rate of axial feed is described in Specifications 24609/07, [Class 83], and 112,779, [Class 83 (iii)].
Patent GB-1430567-A (GB)
Title: Diapers
Inventor: DAVISON W
IPC: A61F13/58
Filed: 1975-01-29
Abstract: 1430567 Diaper fastener COLGATE-PALMOLIVE CO 29 Jan 1975 [4 Feb 1974] 3937/75 Heading A3V A diaper fastener comprises adhesive regions 28, 30 spaced by an adhesive-free region 32. Region 28 is secured to the diaper outer surface, while region 30 is releasably secured to a release strip 38 of the inner surface 16. Region 32, which may be completely free of adhesive or have its adhesive covered by tape &c, is disposed adjacent the diaper margin 18; in use it prevents adhesive contact with the infant. Region 32 may have a line of perforations 34 to facilitate removal of the diaper.
Patent GB-410444-A (GB)
Title: A device for driving the upstanding spindle of a centrifugal machine, in particular a centrifugal spinning machine
IPC: B04B9/08
Filed: 1934-02-07
Abstract: 410,444. Universal joints. NAAMLOOZE VENNOOTSCHAP INTERNATIONALE SPINPOT EXPLOITATIE MAATSCHAPPIJ I.S.E.M., Doetinchem, Holland. Feb. 7,1934, No. 3988. Convention date, Feb. 10, 1933. [Class 80 (ii).] The spindle 3 of a centrifugal machine is supported on an elastic rod 4 in a freely rotatable manner inside the hollow shaft 2 which carries the driving rotor 1. The shaft 2 carries a cup 5 containing radial springs 6 bearing against the cup wall and flat surfaces on the spindle 3. The rotor 1 drives the spindle through the springs which are maintained in position by a cage 7 secured to the spindle 3 and having feet 8 which pass between the springs. Instead of using the elastic rod 4 the spindle 3 may rest loosely in a recess in the bottom of the hollow shaft 1.
Patent GB-905615-A (GB)
Title: Improvements in or relating to treatment of toxic copper-containing solutions
IPC: C01G3/02
Filed: 1961-02-02
Abstract: Copper oxide and ammonia are obtained by adding an excess of sodium hydroxide to an ammonium persulphate solution containing copper salts and heating, preferably to boiling.  Ammonia is evolved and cupric hydroxide which is formed is decomposed to cupric oxide which is removed by filtration or centrifuging.  The solution may be a spent ammonium persulphate copper etching solution containing cuprammonium sulphate, copper sulphate, ammonium sulphate, sulphuric acid, ammonium persulphate.  The heating may be at temperatures from 25-100 DEG C.  Sodium hydroxide solution may be added during the heating to maintain an excess and a minimum pH of 12 or sufficient may be added originally.  The supernatent solution remaining may be neutralized, e.g. with sulphuric acid, and discarded as non-toxic waste.
Patent GB-807611-A (GB)
Title: Improvements in or relating to thermo-plastic bituminous moulding materials
Inventor: SHAW HARRY
IPC: C08L95/00
Filed: 1954-02-11
Abstract: A moulding composition comprises a homopolymer or copolymer of one or more monomers containing a CH2=C< group, or a chlorinated homopolymer thereof, or a mixture of such homopolymers and/or copolymers, a filler material, and a bituminous substance of pyrogenous coal tar origin having a ring and ball softening point of not less than 160 DEG  C. which is compatible with the polymer and forms with it a single phase binder for the filler material.  The composition may also contain a plasticiser and/or a stabilizer for the polymer. Specified polymers are polyvinyl chloride, chlorinated polyvinyl chloride, and polyvinyl acetate. The plasticiser may be tricresol phthalate, dimethyl glycol phthalate, di-2-ethylhexyl sebacate, butyl acetylphosphate, tri 3 ethylhexyl phthalate, tetrafurfuryloleate, butylacetylricinoleate, or anthracene oil.  Suitable stabilizers are dibutyl tin laurate, basic lead carbonate, lead silicate, calcium carbonate, calcium stearate, cadmium stearate, basic lead sulphate, lead salicylate, dibutyl tin maleate, or dibutyl tin oxide.  The filler may be finely powdered cork, fine stone, slate dust, fine silica, precipitated calcium carbonate, cotton linters, dried paper pulp, asbestos fibres, sisal, ramie, coconut fibres, or chopped or diced cloth.  The bituminous material may be horizontal retort pitch. The polymer, plasticiser, and stabilizer may be premixed and gelled before adding to the bitumen and filler.  The composition may be used as a mastic for jointing or roof-covering, or the composition may be sheeted in lining boards, roof tiles, flooring, or wall sheets, or moulded into battery boxes, electrical fittings, pipes or tanks.ALSO:A bituminous composition comprises a homopolymer or copolymer of one or more monomers containing a CH2 = C< group, or a chlorinated homopolymer thereof, or a mixture of such homopolymers and/or copolymers, a filler material, and a bituminous substance of pyrogenous coal tar origin having a ring and ball softening point of not less than 160 DEG C. which is compatible with the polymer and forms with it a single phase binder for the filler material. The bituminous material may be horizontal retort pitch.  The polymer may be plasticized and stabilized (see Group IV(a)). Specified polymers are polyvinyl chloride, chlorinated polyvinyl chloride and polyvinyl acetate.  Fillers mentioned are finely powdered cork, fine stone, slate dust, fine silica, precipitated calcium carbonate, cotton linters, dried paper pulp, asbestos fibres, sisal ramie, coconut fibres, and chopped and diced cloth. The composition may be used as a mastic for jointing, or roof-covering, or the composition may be sheeted in lining boards, roof tiles, flooring, or wall sheets, or moulded into battery boxes, electrical fittings, pipes, or tanks.
Patent GB-876769-A (GB)
Title: Improvements in or relating to circuit breakers
IPC: H01H11/00
Filed: 1959-02-05
Abstract: 876,769. Binding-posts; two-part couplings. WOLFF, H. W. Feb. 4, 1960 [Feb. 5, 1959], No. 4056/59. Addition to 779,625. Class 38 (1). In a circuit-breaker having a terminal or terminals according to the parent Specification, an adaptor is employed with the or each terminal whereby the circuit-breaker may be connected directly to a bus-bar or provided with back-stud or plug-in connections. As shown in Fig. 1, the adaptor may comprise a Z-shaped strip A, the part a of which is riveted or otherwise secured to the bus-bar B and the part a<1> of which is received in the terminal c of the circuit-breaker where it is clamped by the screw D. To provide a back-stud connection the adaptor comprises a threaded post A<1>, Fig. 3, with a flat head a<2> which is clamped by the screw D whilst to provide a plug-in connection, the adaptor comprises a flat strip a<3>, Fig. 4, having a bent-over tongue a<4> which is clamped in the terminal.
Patent GB-487044-A (GB)
Title: Improvements in frequency-changing arrangements and electric discharge tubes for use therein
IPC: H01J43/02
Filed: 1938-02-09
Abstract: 487,044. Electron oscillators. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb.9, 1938, No. 4067. Convention date, Feb. 12, 1937. [Class 39 (i)] In a frequency-changing device comprising a pentagrid tube, one or more secondary electron emitting surfaces are arranged in the neighbourhood of the anode of the oscillator section and are so disposed as to prevent material which vaporizes from the cathode reaching them, the electrons proceeding from the cathode being caused to impact thereon by means which cause them to travel in curved paths. As shown in Fig. 1, the secondary electron emitting surfaces 5 are preferably carried by the screening electrode 4 which consists entirely of a grid and surrounds the cathode 1, control grid 2 and the rod shaped anodes of the local oscillator. The surfaces 5 are in the shadow of the rods 3 supporting the grid 2, and electrostatic or electromagnetic deflecting means may be provided for causing the electrons from the cathode to take the curved path necessary to reach the surfaces 5. In Fig. 2, the secondary electron emitting surfaces are formed on the parts 6 of a screening grid formed partly of solid material and enclosing the oscillator anodes. The parts 6 are shadowed by the supports 3 of the control grid 2. The other electrodes comprise an input control grid 9, screen grid 10, and anode 11 with or without a suppressor grid 12 between the two last.
Patent GB-1005291-A (GB)
Title: Improvements in or relating to pallet trucks
Inventor: KNIGHTS ROBERT EDGAR
IPC: B62B3/065
Filed: 1963-01-31
Abstract: 1,005,291. Pallet trucks. LANSING BAGNALL Ltd. Jan. 23, 1964 [Jan. 31, 1963], No. 4076/63. Heading B8H. The fork arms of a pallet  truck are each of box-section and provided with a detachable nose cap 45. Each arm comprises side members 28 and a central web 22 welded to top and bottom plates 23, 24 and links 26 extend on each side of the web 22 from the lifting mechanism of the  truck, Fig. 2 (not shown), to a lever 37 which is pivoted on a pin 30 extending between extensions 27 of the side members 28. The outer end of the lever 37 is forked and provided with  a pin 30 on which a bogie 33 having rollers 34, 35 is mounted. The nose caps 45 are detachably secured to the extensions 27 by screws 47.
Patent GB-821572-A (GB)
Title: Improvements in electric batteries
Inventor: LUNN HAROLD BRITNOR
IPC: H01M50/107
Filed: 1957-02-07
Abstract: 821,572. Batteries. CHLORIDE ELECTRICAL STORAGE CO. Ltd. Jan. 15, 1958 [Feb. 7, 1957], No. 4207/57. Class 53. A battery comprises bipolar electrodes formed by positive and negative plates attached to opposite faces of conducting discs 3, and separated from one another by insulating discs. In order to ensure tight joints between the cells they are enclosed in a deformable tube 7 which is forced into an outer rigid container 8 whereby the material of the tube 7 is pressed into grooves formed in the peripheries of the discs 3. Alternatively the container 8 may be shrunk on to the tube 7. The assembly is immersed in electrolyte and the ends of the tube and container turned over against the end discs. With a caustic potash electrolyte the container is made of nickel-plated steel. The battery may also be made up of lead-sulphuric acid cells. The tube 7 may be made of polyvinyl chloride or polymethyl methacrylate.
Patent GB-565187-A (GB)
Title: Improvements relating to felted fabrics and to hat bodies made therefrom
IPC: D04H1/10
Filed: 1943-03-15
Abstract: 565,187. Hats. ABBEY, A. (Hat Corporation of America). March 15, 1943, No. 4228. [Class 63] [Also in Group VIII] A fabric for making hats comprises a mixture of fur and/or wool fibres and prolon fibres suitable for felting derived from proteins of relatively high molecular weight, such as soy prolon fibres, the mixture of fibres being intimately felted together. The fabric may consist of 40 per cent wool fibres, 40 per cent fur fibres and 20 per cent soy prolon fibres, or of 50-85 per cent fur fibres with 50-15 per cent of soy prolon fibres. The soy prolon fibres are approximately “" to 1" long, from 10 to 30 microns in diameter and from 3.5 to 4 in acid pH. In making fabrics or hats by the fur felt process, a mixture of prolon fibres and fur, or fur and wool fibres, is deposited bysuction on a former, the deposited layer being shrunk and felted thereon to form a fabric and, if desired, treated to form a hat body. According to the wool felt process, a carded bat of prolon fibres and wool fibres is wrapped on a former and processed. Specification 564,141 is referred to.
Patent GB-1452278-A (GB)
Title: Manufacture of bricks
IPC: B28B11/06
Filed: 1973-01-27
Abstract: 1452278 Coating extruded brick columns BLOCKLEYS Ltd 25 Jan 1974 [27 Jan 1973] 4260/73 Heading B5A [Also in Division B2] An extruded clay column, for cutting into bricks, is provided on at least one face with a coating of material applied, as it leaves the extrusion die 2, as a slurry from within a stationary enclosure 4 having at least one wall 10 which converges towards a face of the column in its extrusion direction, to urge the material against the face of the extruding column. The coating slurry comprises colouring matter, or sand, and in the embodiment is applied to the upper and side faces of the column, the cross-section of which corresponds to the longitudinal section of the brick. The column is horizontally extruded, and its lower face is supported by the base 4 of the enclosure. At the outlet of the enclosure, a scraper 11 is provided for each coated face of the brick, and may be transversely adjusted to provide a desired thickness coating, e.g. # inch, or to define an aperture of the section of the column so that it presses the slurry into the column. Two or more enclosures may be provided sequentially.
Patent GB-638245-A (GB)
Title: Improvements in or relating to steam supply control means for steamheated heat exchangers
IPC: F22D1/32
Filed: 1948-02-14
Abstract: 638,245. Fluid-pressure servomotor-control systems. COCKBURNS, Ltd., RODGER, J., and GRANT, T. Feb. 14, 1948, No. 4387. [Class 135] Steam supply control means for a steamheated heat exchanger, e.g a boiler feedwater heater, comprises a piston - controlled main valve for controlling the steam supply to the heater and a float-operated valve connected to the cylinder of the control piston of the main valve and which, on the accumulation of water in the steam space of the heater, opens and causes the main valve to close. The main valve has an inlet 23, Fig. 3, and an outlet 24, and steam passes from the inlet to the upper end of the cylinder 17 of the control piston 18 through a passage 25 and check-valve 26 and also to the lower end of the cylinder via a passage 27 having an adjustable needle-valve 28, the main valve being open when a pressure release connection 20 at the lower end of the cylinder 17 is closed. The connection 20 is connected to an inlet 29, Fig. 4, of the floatoperated valve, which comprises a balanced double-beat valve 15 connected to a float arm 34, the valve being normally closed, but opened to connect the inlet 29 with an outlet 35 communicating, e.g., with a condenser, on the accumulation of water in the float chamber which is connected to the steam space of the heater. A testing lever (not shown) is provided by which the valve 15 may be opened manually. The main valve is fitted with screw-down gear. An arrangement is described in which the floatoperated valve is duplicated, one float chamber being located slightly above the other and both valves being connected to the one main valve.
Patent GB-564852-A (GB)
Title: Improvements in automatic record changing devices for gramophones
IPC: G11B17/02
Filed: 1943-03-18
Abstract: 564,852. Magazine gramophones. AGABALTIC AKTIEBOLAG. March 18, 1943, No. 4408. Convention date, Sept. 5, 1942. [Class 40 (ii)] Relates to magazine gramophones of the kind in which a spring blade 18 is frictionally coupled to the spindle 15 of the pick-up arm 16 and co-operates with a cam lug 24 on a cam 13 and with a pin 23 on the turntable spindle 10 to give an initial impulse to the cam 13 when the pick-up enters the quick inner groove of the record, the initial impulse causing the cam 13 to be gripped and driven by a pinion 12 on the turntable spindle to perform the record changing operation, as described in Specification 564,851. According to the invention, the blade 18 is locked by a pin 33 on a spring arm 29 when the pick-up is lifted by hand. This enables the pick-up to be manually lifted and traversed, for example to repeat a record, without affecting the record - changing mechanism.
Patent GB-598654-A (GB)
Title: Improvements in and relating to ship propulsion
IPC: F16H61/44
Filed: 1944-03-09
Abstract: 598,654. Hydraulic power installations. BAXENDALE, B. F., PETTY, M. G. R.. and JONES, C. F. March 9, 1944, No. 4433. [Class 69 (ii)] [Also in Group XXXIII] A high-pressure hydraulic power installation comprises a number of Diesel engines 5 driving high-pressure piston-type pumps 6 connected by one or more mains 12a to one or more preferably reversible high-pressure piston-type motors 3, and means to control the speed, and preferably also the direction, of rotation of the shaft 24 of a ship's propeller driven by the motor, the fall power rating of any pump 6 being only a fractional part of the full power rating of any motor 3. The pumps and motors are preferably of the radial cylinder type, the number of engines 5 may equal, or be a multiple or sub-multiple of, the number of pumps 6, and the speed control means preferably acts on the engines 5. In the form shown, couplings 7 and reduction gears 8 are disposed between the engines 5 and pumps 6, the suction and delivery pipes 9, 12 of the pumps are provided with stop valves 10, 13, the motor 3 may be rotated in bearings 25 by hand gear 26 for inspection purposes as - described in Specification 598,666, and it is controlled by a pistonactuated valve 17. A shaft 21 carries cams 18, 19, 20 to actuate, respectively, a spring-controlled pilot valve 15, a spring-controlled distributing valve 16, and, through push-rods 23, the speed governors of the engines 5. With the control means in the stop condition, the high-pressure oil from the pumps is byepassed by valve 16 to the exhaust pipe 28. On initial turning of the cam-shaft 21, cam 18 moves pilot valve 15 which supplies oil to set the motor control valve 17 for direction of flow. On further turning of the cam-shaft, cam 19 moves distributing valve 16 which then supplies oil to the central inflow passage of the valve 17 and thence to the motor 3. On still further turning of the cam-shaft, cams 20 speed up the engines 5 without disturbing the settings of the valves, as described in Specification 598,668.