baber/WOPTO huggingface dataset:
Patent GB-1529172-A (GB)
Title: Casting assembly and method for stator coils
IPC: H02K15/12
Filed: 1977-05-04
Abstract: 1529172 Winding end-turn insulation WESTINGHOUSE ELECTRIC CORP 4 May 1977 [4 May 1976] 18650/77 Heading H2A The inter-connected ends 32A, 32B, of coils 36 forming a stator winding of a hydrogenerator are encapsulated in cast resin. As shown the ends are interconnected by braked bars 38. A pad of conformable material, e.g. polyethylene foam or spun glass fibre is then clamped around the ends by bars 52, 54, and a sleeve 60 is disposed thereon to form a mould. The sleeve is held down tightly by springs 70, and a butyl rubber sealant 75 may seal the pad to the tube and/or conductors. A release agent may be applied to the pad. The sleeve is then filled with a potting compound comprising silica-filled epoxy resin. This mixture is cured and the pad removed.
Patent GB-759423-A (GB)
Title: New device for the utilisation of india-rubber as spring
IPC: B60G17/04
Filed: 1954-06-25
Abstract: 759,423. Springs; road vehicle spring suspensions. JARRET, J. M. B., and JARRET, J. H. June 25, 1954 [June 25, 1953; June 14, 1954], No. 18700/54. Addition to 737,405. Classes 108 (2) and 108 (3). [Also in Group XXX] The resilient device of the parent Specification is provided with means, independent of the means for producing the linear compression of the mass of rubber, for varying or controlling the internal capacity of the closed casing, or the volume of the rubber mass. As applied to a road vehicle suspension, the resilient device of the parent Specification is disposed between the sprung portion of the vehicle and an intermediate point of a roadwheel carrying arm pivoted to the sprung portion (Fig. 1, not shown). An electrical resistance is embedded in the rubber and is connected to a source of current in series with a switch. The two respective contacts of the switch are carried by the sprung and unsprung portions. The arrangement may be such that, due to the heating effect of the resistance, the vehicle height is maintained constant under varying load, or the height may be varied with constant or varying load. The vehicle height may also be adjusted by the setting of a screw which can be projected into a rigid part of the casing of the resilient device. In Fig. 3, a resilient device 2 according to the parent Specification, is connected at its lower end to a tube 16 of material of high coefficient of expansion. The upper end of the tube 16 is connected to an outer housing 1 of a material of low coefficient of expansion. In another construction (Fig. 2, not shown), the tube 16 is dispensed with, and the upper end of the housing 1 is connected directly to the lower end of the device 2. Embedded within the rubber within the housing 1 is a block of a material of low coefficient of expansion (e.g. glass or quartz). The casing of the resilient device of the parent Specification may be formed by machining a tube (Fig. 4), having initially the dimensions shown in broken lines. The recesses thus produced may be toroidal (as shown) or they may be formed by a continuous helical recess (Fig. 5, not shown). The rubber mass may be polyisobutylene.
Patent GB-146856-A (GB)
Title: Improvements in or relating to cigarette compressing and filling devices
IPC: A24C5/02
Filed: 1920-07-05
Abstract: 146,856. Guttmann, N. June 16, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Cigarette-making machines. -In a tube-filling machine, tobacco is compressed between two recessed slides d, d'. carrying the divided filling tubular mouthpiece e, and is forced into the cigarette tube o by a rod f operated by a crank disk r and a slotted link with the portion t of the slot s enlarged to produce a period of rest. The slide d' is opened by a spring l and closed by a cam h acting on a lever connected to a slide g provided with rollers which bear against the slide d<1>. The slide d is moved forward by a spring m and backward by a cam k and lever i. The space between the slides d, d<1> is closed by a plate p which is raised for the introduction of fresh tobacco.
Patent GB-200694-A (GB)
Title: Improvements relating to sewing machines
IPC: D05B69/30
Filed: 1922-07-08
Abstract: 200,694. Mitchell, W., Faulkner, J. A., and Latimer, A. L. July 8, 1922. Sewing-machines; upper and lower shafts, connecting.-A perforated belt 5 which engages sprocket-wheels on the needle-shaft and the hookshaft of a sewing-machine is tensioned by means of a roller 1 on a spring-pressed supporting arm 2.
Patent GB-613363-A (GB)
Title: Improvements in or relating to centrifugal separators
IPC: B04C7/00
Filed: 1946-06-22
Abstract: 613,363. Centrifugal separators. HOWDEN & CO., Ltd., J., and BAENNINGER, H. June 22, 1946, No. 18815. [Class 23] A multi-stage cyclone separator has an outlet slot 11 from the primary stage 10 forming the inlet duct to the secondary stage 12. Dust-laden gases enter through an inlet 13 and are whirled upwards by vanes 16, clean gas passing out through a port 17, containing straightening vanes 18, to an outlet 19. Dust and dust-laden gas are scooped off through the slot 11 and whirled in the chamber 12, dust falling into a hopper 21 and cleaned gas passing upwards through straightening vanes 23 to the common outlet 19. Fig. 4 shows another arrangement, with a tangential inlet to the chamber 10, and the outlet slot divided into two parts 11a, 11b. Fig. 7 shows. a multicell arrangement in which a number of primary separators 10 surround a secondstage separator 12. Inlets to the separators 10 may be ports leading from a spiralshaped manifold. Two or more multi-stage units may be arranged in parallel. Specification 485,998 is referred to.
Patent GB-829174-A (GB)
Title: A process for the production of filaments fibres and films of regenerated cellulose
IPC: D01F2/10
Filed: 1958-06-12
Abstract: Artificial filaments and films are produced by spinning viscose containing 1-5 gm. per kilogram of viscose of a mixture consisting of 15-50% by weight of one or more polyglycols and 85-50% by weight of one or more alkoxylated amines of the formula <FORM:0829174/IV (a)/1> R1 and R2 representing alkylene oxide chains of the general formula -(CnH2nO)xH in which n is 2, 3 or 4 and in which x and n for R1 can be different from x and n for R2 and the sum of x for R1 and R2 is at least 5, and R3 being a hydrogen atom, an alkylene oxide chain, an alkyl radical, a cyclic or heterocyclic radical or a group of the formula <FORM:0829174/IV (a)/2> in which X is an aliphatic, aromatic or cycloaliphatic radical and R4 and R5 can be hydrogen atoms, alkylene oxide chains or aliphatic, cyclic or heterocyclic radicals. The viscose is spun into a bath containing sulphuric acid, sodium sulphate and at least 30 gm/Kg. of zinc sulphate and the products are stretched in a second, hot bath.
Patent GB-130615-A (GB)
Title: Improvements in Rubber Balls.
IPC: B29D22/04
Filed: 1919-07-30
Abstract: 130,615. Tokasago Gomu Kabushiki Kwaisha. Aug. 1, 1918, [Convention date]. Balls.-In the manufacture of balls, primarily intended for use as tennis balls, pieces of common ball-rubber lined with spongy rubber are joined together and vulcanized in a mould, ammonia gas developed from the spongy rubber 2 pressing the ball into contact with the mould. After removal from the mould a fine hole is made through the walls of the ball so as to allow air to replace the ammonia gas, and so as to leave communication between the centre of the ball and the atmosphere.
Patent GB-661436-A (GB)
Title: Improvements in or relating to circulation water heaters
IPC: A61F7/00
Filed: 1949-07-19
Abstract: 661,436. Electric flow heaters. BROSSARD, A. P. July 19, 1949. No. 18940/49. Class 39(iii). An electric circulation water heater for therapy comprises an internally heated water chamber 1 having an outlet 28 at its top end 1a, surrounded by and spaced from a water jacket 3 communicating at its lower end with the lower end of chamber 1 and having an inlet 27 at its upper end. An air gap 3a separates the jacket 3 and chamber 1 which has a cavity 2 containing a grooved ceramic cylinder 2a carrying heating elements 2b. Chamber 1 and jacket 3 communicate by a number of tubes 5 leading into a compartment 4 at the bottom of the chamber 1. The outlet 28 leads to flexible pipes 13, 13<SP>1</SP> carrying heating pads at their ends, the water flowing back via flexible pipes 14, 14<SP>1</SP> to the inlets 27. The apparatus may be housed in a, steel cabinet supplied with a thermometer 10, signal lamp, switches and a clock.
Patent GB-737145-A (GB)
Title: Improvements in or relating to apparatus for defining the percentage of moisture contained in relatively electrically non-conducting materials
IPC: G01N27/22
Filed: 1953-07-08
Abstract: 737,145. Auto humidity control systems. EICKEN, H. July 8, 1953 [July 8, 1952], No. 18954/53. Class 38 (4). [Also in Group XXXVI] Apparatus for measuring and controlling the moisture content of a material comprises two feeler electrodes across which a voltage is developed predominantly by (a) the dielectric constant effect at high moisture content; (b) the resistive effect at average moisture content; and (c) the residual static charge produced during manufacture at low moisture content, this voltage being used to effect the measured anode current of a valve, and to operate control motors through thyratrons which fire at predetermined upper and lower limits of moisture content. As shown, the fixed grid bias via condenser 14 and resistor 15 of a valve 3 is modified by the voltage developed across electrodes 17 which are located across the test material, the anode current, shown on a meter 24, indicating the moisture content of the material in accordance with the dielectric constant, resistance or static charge as above. The voltage at the meter 24 is fed to the grid of a thyratron 4 which has a predetermined fixed bias on its cathode, whereby thyratron 4 fires when the moisture content of the material is below a predetermined value, lighting an indicator lamp 39. The voltage across a cathode resistor 20 is fed to a further thyratron 6 which produces a series of pulses energizing an auxiliary motor (not shown) which accelerates a machine controlling the treatment of the material, after a predetermined delay produced by condenser 51 and potentiometer 52 which are initially introduced between the cathode and screen grid of thyratron 6, and subsequently short-circuited. The voltage at meter 24 is also fed to the cathode of a thyratron 5 which has a predetermined fixed bias on its grid, whereby thyratron 5 fires when the moisture content of the material is above a predetermined value, lighting an indicator lamp 40, and causing a further thyratron 7 to produce a series of pulses which causes the auxiliary motor to slow down the appropriate machine.
Patent GB-1211894-A (GB)
Title: A method for manufacturing a non-woven web or layer from fibres and products manufactured according to said method
Inventor: TAJIMA EIICHI
IPC: D04H1/72
Filed: 1968-04-23
Abstract: 1,211,894. Non-woven fabrics. CINDU N.V. 23 April, 1968, No. 19040/68. Headings D1N and D1R. Fibre slivers 2 having long, staple, fibres of at least 100 mm. in length are manufactured into a non-woven mat 8 by conveying a plurality of slivers between a pair of rollers 3 and to a toothed roller 4 rotating at a higher peripheral speed than the rollers 3 which causes separation of the fibres which are then carried in an air stream, generated by rotation of the toothed roller, and deposited onto a conveyor screen mat 5 through which air is drawn by suction device 6. The toothed roller has radially extending straight teeth 11 mounted on longitudinally extending ribs 12 which act as blades and produce a strong current of air. The fibres may be formed from vinylon, nylon, polester, polyethylene, polypropylene, polyvinylidene chloride, Manila, sisal, jute or ramie. The mat 8 has been treated with a binder such as rubber latex, a synthetic resin emulsion, a natural or synthetic adhesive or with bitument such as asphalt.
Patent GB-683780-A (GB)
Title: Improvements in and relating to lighting control systems
IPC: H05B39/04
Filed: 1950-07-31
Abstract: 683,780. Control systems for consumption apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. July 31, 1950 [Aug. 12, 1949], No. 19065/50. Class 38 (iv). In a control system for a plurality of series connected lamps supplied with constant current, as used in airport runways and street lighting, and comprising electrically operated switching means for short-circuiting the lamp circuit at a plurality of locations remote from the supply source to separate the lamps into banks, the means derives its energy from the series lamp circuit, thereby reducing cabling costs. As shown, the lamps 10, supplied from an A.C. supply through a switch 12, 13 and a constant current transformer 11, one split into banks 18... 23 by relatively heavy switches 24 ... 28, those other than 24, which latter is adjacent the control point, being operated by transformers 34... 37 in each lamp bank and controlled by relatively light switches 38 ... 41. In operation, closure of a control switch 17 across a control circuit supply 15, 16 closes switch 12, 13 to illuminate lamp bank 18. Closure of a control switch 46 opens switch 24 and momentary current flowing in the whole series circuit energizes transformer 34 which closes switch 25 whereupon lamp bank 19 is additionally illuminated. Progressive illumination of the remaining banks is similarly effected by closure of control switches 47 .... 50. In modifications the switches 24 &c. and transformers 34 &c. are connected directly to the transformer 11 with the lamp banks shunted across the switches to permit selected banks to be illuminated at random without those previously connected as in Fig. 1, and in this last embodiment three contact switches may replace the single contact switches 24 &c. permit lamp bank isolation. The transformers 34 may alternatively be inter-wound or dispensed with, the solenoids 30... 33 of switches 25 ... 28 being connected directly in the main lamp circuit. Alternatively motors may replace the solenoids 30... 33.
Patent GB-613690-A (GB)
Title: Improvements relating to solutions of cellulose ethers and products made therefrom
IPC: C08J3/09
Filed: 1946-06-26
Abstract: A composition suitable for use as a film-casting solution when hot is obtained by dissolving an ethyl cellulose of ethoxy content 44.5 to 46.8 per cent in a hot homogeneous mixture of a lower aliphatic alcohol and a lower aliphatic ketone, this mixture being incapable of dissolving the ethyl cellulose at atmospheric temperatures.  The mixed solvent may contain also a small proportion of a higher aliphatic alcohol or an acetic ester thereof.  The hot solution may in general be cooled to 5 DEG  or even 25 DEG  C. below the boiling point of the lowest boiling constituent without gelation.  Films or foils are obtained by casting the hot solution on to a surface which is sufficiently cool for gelation to occur at an early stage or even before surface may be heated to a temperature above that of gelation, e.g. 50 DEG  C.  The solvent mixture may be acetone or methyl ethyl ketone and methyl, ethyl, propyl, or isopropyl alcohol.  It may contain about 10 per cent of a higher aliphatic alcohol such as a butyl or amyl alcohol or an acetic acid ester thereof.  A binary solvent mixture may contain 50-75 per cent of the lower ketone, the remainder comprising the lower alcohol.  The solution may contain 20-25 per cent of the ethyl cellulose.  Plasticizers such as tricresyl phosphate, dibutylphthalate, butyl stearate, castor oil, or mineral oil, and resins, waxes, colouring matter and stabilizing agents may be present.  In an example, ethyl cellulose of 45 per cent ethoxyl value is mixed at 25 DEG  C. with a mixture of equal parts by weight of methyl ethyl ketone and denatured ethyl alcohol.  The mixture is heated gradually, and at a temperature above 70 DEG  C. the ethyl cellulose rapidly becomes soluble in the mixture, and a clear solution is obtained at 75 DEG  C.  The solution is flowed at this temperature or at a lower temperature on to a film casting surface and the solvent mixture is removed by evaporation.
Patent GB-137251-A (GB)
Title: Improvements in internally heated laundry irons
IPC: D06F75/02
Filed: 1919-08-02
Abstract: 137,251. Lynas, J. H. Aug. 2, 1919. Reversible spirit hand-iron of the type described in Specifications 28397/09 and 20013/10 is provided with a detachable connexion between the handle 5 and the forked member 2 consisting of an eccentric nut 8 on a screwed pin 7. The member 2 terminates in a T head which bears against the handle above two lugs 6 and is engaged by the nut when this is turned into the locking position.
Patent GB-196522-A (GB)
Title: Improvements in mechanically-played stringed instruments
IPC: G10F1/18
Filed: 1922-07-12
Abstract: 196,522. Wade, K., (Mills Novelty Co.). July 12, 1922. Keyboard stringed instruments.-In a keyboard violin or the like having fingering-devices and rotary " bows," in order to prevent the sounding of an open string by lag of the bow after a fingering-device has been withdrawn, a damper normally bears on the string near the nut, being withdrawn when the open string is to be played. To apparatus of the general type described in Specifications 29654/13 and 6712/14, [both in Class 88 (i), Musical instruments, Automatic], is attached a bracket 7, Fig. 2, carrying solenoids 8 the cores of which carry spring-pressed dampers 12 bearing on each string 29 near the nut. Fig. 5 shows the circuits for operation from the keyboard. The fingering-devices 14 on a string are operated, and the corresponding bow 17 simultaneously depressed, by closure of contacts 15<a> by keys 18<a>, the damper 12 remaining in contact with the string, to damp any sounding of the open string by lag of the bow when the fingering-device is released. To play the open string a switch 15 is closed by a key 18, lifting the damper 12 and depressing the bow 17.
Patent GB-498683-A (GB)
Title: Improvements in and relating to internal combustion turbines
IPC: F02C7/18
Filed: 1937-07-10
Abstract: 498,683. Elastic-fluid turbines. OPPENHEIM, H. July 10, 1937, No. 19219. [Class 110 (iii)] An internal-combustion turbine, having the rotor shaft bearings 45, 46, 47 disposed at the end walls of the casing 2, has the members 8, 17 driven from the shaft I controlling the inlet and exhaust ports of the combustion chambers 4 mounted on ball bearings 14, 15. The rotor 3 and the hollow blades 24, 25 are cooled by a stream of air drawn in through the pipe 33 under centrifugal action. A disc 50 which is attached to the shaft 1 and acts as an oil screen, is so constructed that a cooling current of air is drawn through the bearing 47 and across the labyrinthine packing 52. Chambers 37, 38 and 39 are provided to convey cooling fluid to the combustion chambers, exhaust manifold and the casing walls adjacent the rotor bearings respectively. The parts 12, 42 of the casing supporting the bear. ings are made of heat-conducting light metal. The combustible mixture is fired by heated filaments energized by the moving contact 18.
Patent GB-663984-A (GB)
Title: Improvements in lighting regulation systems for theatre lighting and the like
IPC: H05B39/04
Filed: 1949-07-22
Abstract: 663,984. Control systems for lamps. NEWBY, R. L. (Allmanna Svenska Elektriska Aktiebolaget). July 22, 1949, No. 19309/49. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 24, 1950.] Class 38 (iv). A control system for stage or like lamps embodies the following features: (1) a transductor 24 in series with each lamp or lamp group 8; (2) a control circuit, such as I, II or III, for each lamp (or lamp group) including an autotransformer or other dimmer 2<SP>1</SP> and a scene-to-scene folder 3, which may also be in the form of an autotransformer; (3) a pair of " scene-change " circuits A, B associated with each control circuit and so fed from the fader 3 that in one extreme position of the fader only circuit A is energized and in the other extreme position only circuit B is energized, and (4) voltage adjusters 6a, 6b shunting each pair of scene-change circuits (or connectible to different pairs by a switch 19, as in the case of control circuits I, II) and feeding the control winding of the associated transductor-if desired, through an amplifier 23. During one scene when, say, circuit A is energized, the setting of adjuster 6a determines the brilliance of its associated lamp. Adjuster 6b is then inoperative but may be set to the position required by the next scene and will become operative when circuit B is energized by movement of the fader to its other extreme position. Rectifiers 22 may short-circuit the effective portion of that adjuster which is not in use. Resistors 20, 21 correct for non- linearity of control introduced by the rectifiers. The circuits A, B may be energized by D.C. or A.C. and, in the latter case, a rectifier 51 in the output circuit of the voltage adjuster may replace the rectifier bridges 5 shown in circuits I, II. A master dimmer 2 may be common to all control circuits. The dimmers and faders may be manually or motor operated. Reversing switches, such as 16, may be provided for each pair of circuits A, B to allow instantaneous fader-over. To enable the transductor 24 to extinguish a low-power lamp 8 a further transductor may be effectively in shunt with the lamp. In a modified arrangement separate conductors 17, 18 are provided for each row of voltage adjusters 6a, 6b for each scene, instead of utilizing a common conductor 18, in which case each transductor 24 has a number of control windings corresponding to the number of scenes.
Patent GB-868963-A (GB)
Title: Improvements in or relating to exhaust gas stream silencers for use with gas turbineengines
Inventor: BLACKWELL BASIL DAVENPORT
IPC: B64F1/26
Filed: 1956-06-21
Abstract: 868,963. Exhaust silencers. BRISTOL SIDDELEY ENGINES Ltd. June 19, 1957 [June 21, 1956], No. 19312/56. Class 7(2). The exhaust from an aircraft gas turbine engine is silenced on the ground by a unit comprising a frusto-conical convergent member 22 of steel plate having preferably nozzleshaped perforations 33 and surrounded by a diffuser 24 of steel plate mounted on a wheeled carriage (not shown), the inlet area of the member 22 being adjustable as by a restrictor plate 23a which may itself have an adjustable central aperture or may have a fixed central aperture in which case the plate 23a is replaceable by a plate of different aperture and may have a bell-mouth extension on its upstream side. The member 22 and plate 23a may as shown replace the nozzle of an engine jet pipe 12, when the effective discharge area of the member 22 is equal to the nozzle discharge area, or the nozzle may be retained, when the member 23a surrounds it with a clearance for air entrainment and the member 22 has an effective discharge area equal to at least one and a half times the sum of the nozzle discharge area and the clearance area, the member 22 being secured to the member 24 at its upstream end by bolted-up flanges. The effective discharge area of the member 22 may be selected by using a suitably apertured throttle plate 28, or one of variable aperture or an axially displaceable exhaust bullet. A perforated extension 29 and cap 30 of total effective discharge area equal to that of the unrestricted downstream end of the member 22 may be used, or the end may be entirely blanked off. The members 22, 29 and, according to the Provisional Specification, 24 may be made in sections to allow variation of their lengths. Water may be sprayed on to the member 22. The silencer unit may be used in a test house in series between an engine and an air-entraining diffuser of a further silencer. The Provisional Specification describes two embodiments not having a plate 23a, in one of which there is no wheeled carriage and both the members 22, 24 are bolted to the pipe 12, the perforations 33 being plain holes.