baber/WOPTO huggingface dataset:
Patent GB-125238-A (GB)
Title: Improvements in or relating to Air and Gas Pumps.
Filed: 1918-04-23
Abstract: 125,238. Scanes, A. E. L., and British Westinghouse Electric & Manufacturing Co. April 23, 1918. Density separators.-For use with an air or gas pump 7 of the kind, utilizing a liquid jet, spray, &c. as the working medium, a seal tank 6, into which the liquid enters by a pipe 8 and from which it is led by a pipe 9 to the pump, is so arranged that the liquid entering the tank rotates therein and creates a vortex to increase the surface in contact with the air &c., the inlet from the pump and the outlet thereto being tangential to the circumference of the cylindrical wall of the tank. The tank has an inlet 10 for make-up or cooling water and an outlet 11 controlled by a float-valve to maintain the desired liquid level. In a rectangular or other tank, a cylindrical enclosure is provided within which the vortex is created. The tank may be provided with an in. ternal spiral baffle to assist in the formation of the vortex. In the Provisional Specification, Specification 7443/15, [Class 8 (i)2 Air and gases, Compressing &c.], is referred to.
Patent GB-1059923-A (GB)
IPC: G06G7/48
Filed: 1964-02-19
Abstract: 1,059,923. fluid regulation. GENERAL ELECTRIC CO. Feb. 19, 1964 [Feb. 21, 1963], No.6916/64. Heading G3H. A pure fluid amplifier is arranged to function as an integrator or differentiator by the provision of impedance elements in the control nozzle conduit or conduits and in a feedback conduit or conduits. In an embodiment, a three stage amplifier has the power jet from a nozzle 5 in the first stage deflected by a control jet from a nozzle 9 and by positive and negative feedback jets from nozzles 20, 21 connected through capacitances 22, 23 and restrictors 25, 26 with one output passage 17 of the last stage. The input conduit 7 to the control nozzle 9 has two capacitances 24 and two restrictors 27, 28. The Specification illustrates, by electrical analogy, that this arrangement functions as an integrator. The control nozzle would be oppositely disposed for an arrangement with an even number of stages or for control pressures below ambient pressure. The jet from the control nozzle may be opposed by a constant pressure bias jet or by a second control jet fed through capacitances and restrictors, and feedback conduits from the output passage 16 may also be provided. In a modification, shown by electrical analogy to function as a differentiator, the input conduit divides into two branches each with a restrictor and capacitance and each feeding an opposed control nozzle, and a feedback conduit connecting a nozzle with an output passage of the last stage has two capillary restrictors and two capacitances. The values of the capacitances and restrictors are so chosen, in each instance, that the apparatus performs a pure integrating or differentiating function.
Patent GB-475621-A (GB)
Title: Improvements in or relating to thermionic modulator circuit arrangements
IPC: H03C1/16
Filed: 1937-03-09
Abstract: 475,621. Valve modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 9, 1937, No. 6948. Convention date, March 9, 1936. [Class 40 (v)] The efficiency of a loss modulator is improved by maintaining the D.C. anode current of the power valve substantially constant by a lowfrequency choke. A power amplifier valve 1 has its input connected to a carrier frequency source 2 and the anode 4 connected by condenser 8 to the tank circuit 9, 10. Anode current is supplied from a source 7 through an H.F. choke 5 and a modulation frequency choke 6. The loss introducing valve 12 has its anode-cathode space connected across the tank circuit and modulation from source 19 supplied to its grid 16. The effect of the choke 6 in preventing changes of anode current at modulation frequency is to provide an increased degree of modulation for a given variation in loss by absorbing power during the modulation troughs.
Patent GB-481232-A (GB)
Title: Improvements in and relating to the winding of cops of yarn or thread
Inventor: REINERS DR WILHELM
IPC: B65H54/14
Filed: 1937-03-10
Abstract: 481,232. Winding yarns. REINERS, W., (trading as SCHLAFHORST & CO., W.). March 10, 1937, No. 7080. Convention date, April 7, 1936. Addition to 463,148. [Class 120 (ii)] The machine described in the parent Specification is modified by the provision of a feeler having an eye embracing the growing cop for feeding the yarn or thread guide along the spindle, the cop spindle or the guide being reciprocated for traversing the thread or yarn along the spindle. The feeler and guide may be coupled together during the feeding movement and automatically uncoupled at the completion of a cop when the guide is automatically returned to its starting position and the feeler is left at the end of the feeding movement while a fresh cop tube is donned; the feeler and guide may be automatically recoupled by the return of the former to its starting position after the donning of the first tube. The feeler and guide may be mounted on a common carrier in which case a camactuated lever provided with a pin engages the yarn or thread at the completion of the cop and carries it back to the driving collar of the stub spindle prior to the doffing of the completed cop. As shown in the Figure, the stub spindle 4 and counterhead 6 are carried in bearings 5, 8 on a shaft 9 reciprocated from a cam 303 to traverse the yarn on to the cop 12, the thread guide 14 being carried by a member 15 fed along a rod 16a to build the cop by a feeler 330 engaging the end of the cop and slidable along a rod 332 and normally coupled to the thread guide by a latch 342 pivoted in the thread guide member 15 and engaging a pin 343 in the feeler carrier 331. At the completion of a cop, the doffing and donning cams on the shaft 424 are put into operation and the lever 44, actuated by the cam 41, engages the latch 342, disengages it from the pin 343 and pushes the thread guide back to its starting position to wind the thread in wide convolutions over the completed cop back to the driving collar of the spindle 4; the lever 339 also engages the end 340 of the shaft 9 and pushes it back, the counterhead 6 being retained by a pin 341 engaging a stop 342 and so releasing the completed cop which drops down on to a conveyer 105 while the yarn from the cop is severed by the shears 110. The lever 339 then returns, a fresh tube from the magazine A is delivered to position 'between the collar of the spindle 4 and the counterhead 6 and clamped between them with the yarn clamped between the collar of the spindle 4 and the fresh tube 13; the lever 337 then engages the clutch 333 of the feeler and moves the carrier 331 back to its initial position to engage the base of the tube 13 while the latch 342 reengages the pin 343.
Patent GB-457875-A (GB)
Title: An improved means for handling soap paste, grease and other materials of like consistency
IPC: A47K5/12
Filed: 1935-03-07
Abstract: 457,875. Dispensing pastes. HARRIS, F. G., 177, St. Andrew's Road South, Lytham- St.-Annes, Lancashire. March 7, 1935, No. 7117. [Class 102 (i)] [See also Group XVII] A dispensing device for soap paste, grease, &c. comprises a base a fitted with a cover b provided with a window c and housing a collapsable paste &c. container e formed with rigid ends s, r, the last mentioned having a central opening, and a flexible wall portion t. The container is surmounted by a spring follower u and rests on a seating d below which the base inclines downwardly to an aperture f communicating with an opening in a passage g in which slides a plunger h. The plunger, which is spring-controlled, projects through one end of the passage, the other end being closed by a plug p housing the stem of a spring- controlled piston m. With the plunger in the retracted position shown, paste &c. can flow into the passage through the aperture f; on pressing in the plunger, the supply is cut off and the quantity contained in the passage is moved forwardly, forcing back the piston and issuing through the opening n. The container e may be refilled without removing it by means of a refilling gun applied to the nipple q. To prevent leakage between the bottom r of the container e and the seating, a rubber washer v, Fig. 3, may be provided, or a flanged leather washer x, Fig. 4, may surround a tubular nozzle w depending from the base of the container.
Patent GB-936313-A (GB)
Title: Fermentative production of tetracycline or chlortetracycline
IPC: C07C233/00
Filed: 1961-02-27
Abstract: The antibiotics tetracycline or chlortetracycline are produced by fermentation of a culture medium containing assimilable carbohydrates, organic nitrogen and mineral salts with a strain of Streptomyces lusitanus, especially S. Lusitanus CBS 101-A, under submerged aerobic conditions at a temperature of 24-30 DEG  C. A specified culture medium contains starch, lardoil, peanut meal, calcium carbonate, ammonium sulphate, ammonium chloride and corn steep liquor.  Chlortetracycline is produced when the culture medium contains chlorine ions and tetracycline when the culture medium is free of chlorine ions.  The antibiotics may be isolated as their dibenzyl ethylene diamine complexes.  Specifications 713,795 and 936,314 are referred to.
Patent GB-638071-A (GB)
Title: Improvements relating to rubber compounding ingredients
IPC: C08L15/00
Filed: 1947-03-14
Abstract: Polyisobutylene and coumarone resin may be added to the extender in rubber compositions consisting of the product obtained by vulcanizing unvulcanized natural rubber which has been depolymerized by heating to 200-300 DEG  C.  The natural rubber is preferably premasticated with a processing aid such as a peroxide or mercapto-benzthiazole and then vulcanization effected by sulphur or sulphur chloride after adding a mineral oil of relatively high aromaticity, or a tar, pitch, bitumen, wax, animal or mineral oil such as linseed or rape oil.  In examples the mixes are vulcanized in the presence of dicyclohexylamine.ALSO:An extender which may be added to a rubber composition before vulcanization consists of the product obtained by vulcanizing unvulcanized natural rubber which has been depolymerised by heating to 200-300 DEG C.  The natural rubber is preferably premasticated with a processing aid such as a peroxide or mercaptobenzthiazole, and then vulcanization effected by sulphur or sulphur chloride after adding a mineral oil of relatively high aromaticity, or a tar, pitch, bitumen, wax, animal or vegetable oil, such as linseed or rape oil, or coumarone-indene resin or polyisobutylene.  In examples the mixes are vulcanized in the presence of dicyclohexylamine.
Patent GB-988719-A (GB)
Title: Improvements in and relating to yieldable supports for mine arches and other underground supports
IPC: E21D11/18
Filed: 1962-02-23
Abstract: 988,719. Yielding pit props. GUTEHOFFNUNGSHUTTE STERKRADE A.G. Feb. 23, 1962 [Feb. 25, 1961], No. 7261/62. Heading E1E. A yielding pit prop comprises an I-section member 1 supported in a box-casing 2 by wedges 4, 7 engaging abutments 10, 9 respectively. The wedge 4 is made of wood and is clamped or bolted between the flanges of the member 1 whilst the wedge 7 consists of a U-shaped member having a driving or withdrawal nose 14.
Patent GB-711401-A (GB)
Title: Improvements in and connected with the fabrication of interfitting door, window or similar frames
IPC: B23K37/04
Filed: 1952-03-21
Abstract: 711,401. Making window &c. frames. DOWELL & SONS PROPRIETARY, Ltd., C. March 21, 1952 [March 30, 1951], No. 7312/52. Classes 83 (2) and 83 (4) Welding.-In a method of making interfitting frames for doors, windows &c., members of the inner and outer frames are joined together while held in their correct relative interfitting positions so that a satisfactory fit is obtained. In making a window frame 11, Fig. 1, with a pivotally mounted sash 12, corresponding members 15, 19 of the frame and sash are held in their correct relative positions in a clamp 24, Fig. 7, of a welding machine 25 and are flash butt-welded to corresponding members 14, 18 also held in their correct relative relationship on a second clamp 24 of the welding machine arranged to form a mitre joint. Clearance between the frames is determined by distance pieces 22, Fig. 8, between the members which are located longitudinally by pins 28 on the jaws 26, 27 of the clamps engaging holes provided in the members. The distance pieces 22, Fig. 9, comprise a pair of mating recessed portions 23 arranged so that the frames may be subsequently separated by relative movement in a direction perpendicular to the general plane of the frames, while relative movement longitudinally is prevented. On completion of the welding operation the frame members are removed, re-located in the clamps for welding the next pair, the process being repeated until the whole of the frame is welded. The vertical members 14, 18 of the frame and sash respectively comprise longitudinal halves 14<SP>1</SP>, 14", 18<SP>1</SP>, 18<SP>11</SP> and in welding these end to end, the clamps 24 are arranged so that the members are longitudinally aligned.
Patent GB-1283794-A (GB)
Title: Television camera tube
IPC: H01J31/36
Filed: 1970-02-16
Abstract: 1283794 Image pick-up tubes BENDIX CORP 16 Feb 1970 [24 Feb 1969] 7319/70 Heading HID An image pick-up tube of the image orthicon type is provided with a channel electron multiplier between the photo-cathode and the target electrode, the output surface of the multiplier being provided with a conductive coating from which the video output signal is obtained; this coating may be spaced from the target (Fig. 2, not shown), in contact with the target (Fig. 3, not shown), or separated from the target by an insulating coating (Fig. 4, not shown). Spurious output signals may be reduced by coupling the input and output surfaces of the multiplier to potential sources through resistances which are earthed through capacitors and by capacitively coupling the input and output faces (Fig. 5, not shown); this capacitive coupling may comprise a separate capacitor or the capacitance formed between conductive surfaces the two outside surfaces of the multiplier.
Patent GB-789888-A (GB)
Title: Resistance thermometer
IPC: G01K7/18
Filed: 1955-03-14
Abstract: A ceramic coating applied over a platinum resistance thermometer winding on an alumina former (see Group XXXVIII) comprises beryllium, calcium, aluminium and magnesium oxides mixed with oxides of at least two of the following metals: titanium, zirconium, barium, boron and silicon.  The oxides are mixed together and screened, and a suspension in a temporary binder is then brushed or sprayed over the windings and sintered or fused on by heating.
Patent GB-1428821-A (GB)
Title: Vinyl polymerization by bulk method
IPC: B01F7/00
Filed: 1973-02-15
Abstract: 1428821 Mixing apparatus; polymerisation apparatus OWENS-ILLINOIS INC 15 Feb 1973 7415/73 Headings B1C and B1X Bulk polymerisation of a vinyl halide monomer to provide a solid particulate polymer is carried out in a vertical, inverted frusto-conical pressure vessel having an inclined screw agitator rotatable about its own axis and that of the vessel. As shown the vessel has a heat exchange jacket 7, a screw agitator 19 and a scraper blade 16. Monomer is supplied through a line 22. or through a line 23 having a vessel 24 containing catalyst or initiator. In a modified apparatus (see Figs. 2 and 3, not shown) the screw has an epicyclic reaction.
Patent GB-422603-A (GB)
Title: Improvements in means for feeding kinematograph film continuously through a gate
IPC: G03B1/56
Filed: 1934-03-08
Abstract: 422,603. Kinematograph apparatus. JOHN, W. E., National Bank Building, Market Street, Johannesburg, South Africa. March 8, 1934, No. 7424. [Class 97 (i)] To reduce irregularities in the movement of a film passing continuously through a gate, the film is fed at the outgoing side of the gate by a sprocket having a flywheel rigid with it, and a roller rigid with another flywheel is engaged by the film at the ingoing side of the gate ; means for driving the roller otherwise than through the film may also be provided. As shown, a sprocket 5 and flywheel 7 are rigid on a shaft 6, and are driven through spring arms 12 by a tubular shaft 11 geared by helical wheels 10, 9 to a power shaft 8. A roller 18 at the ingoing side of the gate 3 is normally driven by the film, and is fixed to a shaft 20 carrying a flywheel 21. The roller 18 may be smooth and the film 2 may be held to it by a spring-pressed roller 19. The flywheels may be of the same diameter, and, during starting and stopping of the feed movement, the flywheel 21, and roller, may be driven from the flywheel 7 by a friction roller 29. The roller 29 is pressed by a spring 31 into engagement with the flywheels, and may be moved out of engagement by a handle 32 having a notch 33 to engage a tooth 34; or by mechanism responsive to the feed of the film. The gate comprises a frame 24 pressed against the surfaces 23 of the gate block by springs 22 ; film tracks 25 are formed in the block, and rollers 26 with flanges 27 separable under the control of springs 28 are provided to position the film vertically.
Patent GB-374494-A (GB)
Title: Improvements in mining machines
IPC: E21C31/00
Filed: 1931-03-10
Abstract: 374,494. Variable-speed gearing. DEHN, F. B., 103, Kingsway, London.- (Goodman Manufacturing Co. ; 4834, South Halsted Street, Chicago, U.S.A.) March 10, 1931, No. 7429. [Class 80 (ii).] Variable speed planet gearing in a mining machine comprises differential planet gears 63, 67, driven from a pinion 62 and carried by a cage 65, the gears 63, 67, respectively engaging an internal gear 66 controlled by a band brake 72 and an internal gear 68 ; a clutch 73 is engageable with either the cage 65 or the internal gear 68 to vary the speed of the driven shaft 58.
Patent GB-559522-A (GB)
Title: Improvements in production and use of 1,4-diamino-2-methyl naphthalene and salts
Filed: 1942-06-02
Abstract: 559,522. 1 : 4-Diamino-2-methyl naphthalene. LEDERLE LABORATORIES, Inc. June 2, 1942, No. 7490. Convention date, June 19, 1941. [Class 2 (iii)] 1 : 4-Diamino-2-methyl naphthalene is produced by reducing a 4-azo-derivative of 1-amino 2-methyl naphthalene. The preferred azo derivative is that produced by diazotizing sulphanilic acid and coupling with 1-amino-2- methyl naphthalene. Other compounds which may be diazotized, coupled and used in the process of this invention are p-amino-benzoic acid, p-nitro aniline and phenylene diamine. In examples, (1) a sulphuric acid solution of 1-amino-2-methyl naphthalene is treated at 0‹ C. with diazotized sulphanilic acid. The azo compound is filtered and reduced in alkaline medium with sodium hydrosulphite to form the required 1 : 4-diamine. (2) The azo compound prepared as in example (1) is reduced by stannous chloride in hydrochloric acid. (3) A hydrochloric acid solution of sodium nitrite and p-amino-benzoic acid is treated with a sulphuric acid solution of 1-amino-2-methyl-naphthalene and the product catalytically reduced in the presence of active charcoal and palladium chloride catalyst to form 1 : 4-diamino-2-methyl naphthalene which is stated to possess anti-hemorrhagic activity. It may be administered orally or parenternally in solutions of fixed oils such as olive oil, cottonseed oil, almond oil, or in solution in organic esters such as ethyl succinate, butyl succinate, cyclohexyl succinate, butyl pimelate, ethyl pimelate, cyclohexyl pimelate, isopropyl succinate, and amyl succinate.
Patent GB-1027153-A (GB)
Title: Improvements in and relating to the manufacture of regenerated cellulose fibres fromviscose
Inventor: WISE HAROLD FRANKLYN
IPC: D01F2/06
Filed: 1962-02-27
Abstract: 1,027,153. Making viscose rayon staple fibres. COURTAULDS (NORTH AMERICA) Inc. Feb. 26, 1963 [Feb. 27, 1962], No. 7563/62. Heading B5B. Viscose rayon staple fibres are made by extruding a viscose containing 5-9% cellulose and a caustic soda to cellulose ratio of from 0À6: 1 to 1À5: 1, the cellulose having an average D.P. of at least 300 and the viscose having a gamma number of at least 80 and a ball-fall viscosity of at least 100 seconds, into an aqueous coagulating bath containing a percentage by weight of sulphuric acid which is (0À77 C + 0À92) 0À5, where C represents the percentage of caustic soda in the viscose, 6-15% sodium sulphate, 0-1% zinc sulphate and 0À5-1À5% formaldehyde, the temperature of the bath being 10 to 50 C. and the filaments having an immersion period in the bath of <SP>1</SP>/ 3  to 9 seconds, stretching the filaments in contact with a dilute aqueous solution of sulphuric acid at a temperature above 90 C. to increase their length by between 150 and 280 or even up to 350% and cutting and relaxing the stretched filaments only after their gamma number has fallen below 10. The fibres have a high initial wet modulus, tenacities greater than 5 g.p.d., the product of their tenacity expressed in g.p.d. and their extensibility expressed as their percentage elongation is at least 30 which is a measure of the performances to be expected in the carding or drawing operations of the cotton system. A high initial wet modulus is defined as a modulus greater than 15 grams per denier per 100% extension measured at 5% extension. The ball fall viscosity is defined as the time in seconds taken for a # inch diameter steel ball to fall through 20 cms. of the viscose. The gamma number of the filaments is determined by freezing them to inhibit regeneration, dissolving them in an inert liquid, and then proceeding in the manner used for determining the gamma number of viscose.
Patent GB-249553-A (GB)
Title: Improvements relating to the operation of back pressure turbines
IPC: F01K13/02
Filed: 1926-03-19
Abstract: 249,553. Akt.-Ges. Brown, Boveri, et Cie. March 20, 1925, [Convention date]. Idly-running stages, preventing adverse conditions in. - Means are provided for disconnecting a backpressure turbine from the back-pressure pipe and connecting it to a point of lower pressure, when running idly or with only a small quantity of steam. The point of lower pressure may be the atmosphere or a condensing-apparatus. A change-over valve b normally connects the turbine exhaust pipe g with the back-pressure pipe h, but should the pressure in front of the first turbine nozzles drop owing to the closing of the inlet valve, this reduced pressure acting on a piston d on the valve spindle c allows a spring f to lift the valve b so as to connect the pipe g with a pipe i which leads to a point of lower pressure. Where pressure oil is used to control the turbine, the piston d may also be operated by the oil. Alternatively, the steam pressure may actuate a valve controlling pressure oil for the piston d, which may be constructed as a differential piston to effect a rapid change-over. The change-over valve may be actuated by a mechanical connection with the turbine inlet valve.