baber/WOPTO huggingface dataset:
Patent GB-727193-A (GB)
Title: Improvements in and relating to trigger-actuated release valves for compressed-co fire extinguishers
IPC: A62C13/00
Filed: 1953-02-07
Abstract: 727,193. Valves; pressure-relieving devices for fluids. SAFETY AUTOMATIC FIRE ESCAPES, Ltd., and LONGWORTH, R. Feb. 8, 1954 [Feb. 7, 1953], No. 3509/53. Class 135. A trigger-actuated valve for use on fire extinguishers comprises a body made in two parts, one part 11, Fig. 1, screwing into the other part 3 until it abuts against a shoulder 12 and being provided with a depending cylindrical wall 16 constituting the valve seat. The closure member 22 with its washer 23 is urged to the closed position by a spring 24 and is carried on a spindle 18 which passes through the body part 11 and is packed at 26. When the valve is opened by pressure on a lever 20, fluid passes through the valve seat, through radial passages 5a in the body part 11 to an annular groove on the external surface thereof, and then through a radial passage 5 in the body part 3 to the outlet 6. Excess pressure in the extinguisher ruptures a diaphragm 8 and the fluid escapes through the hollow interior of the screw plug 9 holding the diaphragm in place. In a modification, the packing for the valve stem 18, Fig. 2, is held in position by a nut 30 and comprises a member 31 with a protuberance at the lower end surrounded by a depending wall, the latter being compressed towards the protuberance when the nut 30 is screwed down. In another modification, an actuating trigger is connected to the free end of lever 20 by links, one on each side of the lever.
Patent GB-182087-A (GB)
Title: Improvements in and relating to kinematographic apparatus
IPC: G03B1/18
Filed: 1922-02-07
Abstract: 182,087. Kriegerbeck, V., and Bautz, J. June 18, 1921, [Convention date]. Drawings to Specification. Kinematograph picture films.-Non-perforated paper films have pictures on each side, the pictures on one side being printed in the reverse direction to those on the other side so that they can be exhibited without rewinding.
Patent GB-426830-A (GB)
Title: Improvements in variable speed mechanisms
IPC: H02P9/06
Filed: 1934-02-03
Abstract: 426,830. Systems for transmitting mechanical power. LOW, D., 93, Pearson Drive, Asheville, North Carolina, U.S.A. Feb. 3, 1934, No. 3642. [Class 38 (iv)] In a variable-speed mechanism a drive shaft 1 is coupled to a driven shaft 27 through a differential gear 26, 28, the intermediate wheels 24, 25 of which are mounted in a rotatable geared frame 19, which is driven through a worm gear 18 shaft 15 and gears 13, 14, by an electric motor 8 which is supplied with energy from a generator 7 driven from the drive shaft 1. The generator and motorshafts are aligned and may be clutched to gether by an electromagnetic clutch 10, 48 under the control of a hand controller 34 which also controls the speed of the motor 8 when the generator shaft is not coupled to it. The shaft 27 is at a stand-still when, in the middle position, the controller 34 de-energizes the clutch and motor circuits so that the motor shaft is clutched to the generator shaft and the intermediate wheels 24, 25 are rotated at one-half the speed of the shaft 1. Movement of the controller to the left or the right causes opening of the clutch and increase or decrease of the speed of the motor relatively to the generator thus producing varying speeds of forward and reverse rotation of the shaft 27.
Patent GB-1409378-A (GB)
Title: Apparatus for influencing the speed of track-bound vehicles
IPC: H02K49/04
Filed: 1973-01-24
Abstract: 1409378 Electromagnetic and friction trackbrakes A EGLOFF 24 Jan 1973 [3 Feb 1972] 3665/73 Heading F2E An apparatus for reducing the speed of trackbound vehicles includes a track rail comprising a ferromagnetic material and including a body portion having an upwardly-facing surface for supporting the wheels of the vehicles and for channelling magnetic flux radially to or from the wheels, and at least one portion spaced transversely of the body portion and extending upwardly beyond the surface and having a surface arranged to face sidewardly-facing surfaces of the wheels for channelling magnetic flux from or to the sidewardly-facing surfaces, and at least one electrically-conductive coil having an upwardly-extending axis, the or each coil being disposed around the body portion for producing the magnetic flux. As shown in Fig. 1, the coil lies wholly within the rail 1, in the longitudinal sense. Each length of rail may have a single coil or a number arranged in series; in the latter case, energization of the coils may be a function of wheel position. Braking blocks 5 for friction braking are slidable on the tops 4 of the extension legs 12 of the rail 1, and are attracted both to the wheel 2 and the legs 12 when the coils 8 are energized. The friction braking is maintained at a minimum by providing inclined braking surfaces 6. The surfaces of blocks 5 in contact with tops 4 may have grooves filled with lubricant. To improve the braking due to eddy currents induced in the wheels, in the braking blocks 5 and in rail 1, further conductors 9 are coupled with the rail 1, and (singly or in sections) extend along its entire length. Conductors 9 may be connected to form shorter coils. Their depth from the running surface of the rail optional. In Fig. 2 (not shown), an insert (22) of wear-resistant ferromagnetic steel is located in the top of the rail so that the wheel runs on the insert only. A groove for the wheel flange (compare Fig. 1) is provided partly in the insert and partly in the rail, and one side only if the flange contacts the insert. In Fig. 3, mechanical braking is further reduced by eliminating moving parts, and only one upward extension 32 is provided having a wear-resistant flange-guiding surface 30.
Patent GB-524709-A (GB)
Title: Improvements in fuel injection pumps for internal combustion engines
IPC: F02M59/18
Filed: 1939-02-03
Abstract: 524,709. Fuel-injection pumps. KAMMER, G. S. Feb. 3, 1939, No. 3709. [Class 102 (i)] A fuel-injection pump for an internal combustion engine comprises a pump plunger 6 provided with one or more grooves 22 along generatrices of its cylindrical surface, and an accumulator plunger 13 acting against a strong spring 14 and provided with a preferably oblique control edge 16 which, at a predetermined pressure in the accumulator 12, rotates the plunger 6 to bring the grooves 22 into register with suction ports 8. There are preferably an even number of grooves arranged in pairs diametrically opposite each other, and the unloading pressure may be varied by rotating the plunger 13 by means of a worm on a shaft 17. The control edge 16 may engage a bell-crank lever 18 connected by a rod 20 with a pair of ball joints to a collar on the plunger, the latter being returned to its normal position by a spring 19. Alternatively, the lever 18 and the plunger 6 may be connected by a rack and pinion. Specification 524.098 is referred to.
Patent GB-757898-A (GB)
Title: Improvements relating to collars and cuffs for shirts
IPC: A41B3/10
Filed: 1953-02-12
Abstract: 757,898. Collars and cuffs, stiffening. CROWTHER, J. V. May 10, 1954 [Feb. 12, 1953; Feb. 12, 1953], Nos. 3937/53 and 3938/53. Drawings to Specification. Class 141. A one-piece collar or double cuff for a shirt or blouse comprises a stiffening layer of fabric between two layers of the shirting or blouse material, the stiffening layer being in one or more pieces extending substantially throughout the whole area of the collar &c. and providing one or more slots, a series of perforations or a complete gap so as to constitute a line of weakness for a precision fold-line. The three layers may be secured together by bonding, adhesion or by fusion.
Patent GB-947543-A (GB)
Title: Monomer purification
IPC: C08F218/08
Filed: 1962-02-01
Abstract: In a method of controlling the amount of acetaldehyde and acetone in recovered monomers of a terminated copolymerization reaction of monomers having aliphatic carbon to carbon double bonds in the presence of a redox catalyst system in which the activator comprises a water-soluble, oxidizable, sulphoxy compound in which the valence of a sulphur atom does not exceed 4, an aqueous filtrate of the terminated copolymerization reaction is subjected to a first distillation, then to a decantation, then to a second distillation of the aqueous phase, and a decantation of the second distillate. Preferably the method comprises heating the aqueous filtrate in a distillation column, condensing the distillate and passing same overhead to a decanter where the condensate is allowed to separate into a monomer phase and an aqueous phase, returning the monomer phase to the copolymerization reaction system, the aqueous being divided into two parts, one being returned to the distillation column as reflux and the other being fed to a second distillation column, distilled and passed to a decanter where it is allowed to separate into a monomer and an aqueous phase, the former being recycled to the feed of the first distillation column, and the latter being divided into a large part which is returned to the column as reflux and a small part which is purged to waste.  The monomers preferably comprise at least one vinyl carboxylate, e.g. vinyl acetate, butyrate, valerate, pelargonate, stearate or laurate and one or more other monomers such as styrene and substituted styrenes acrylic and substituted acrylic acids, esters, amides and nitriles, maleic and fumaric esters, vinyl heterocyclics, vinyl acetylene, methyl isopropenyl ketone, methyl vinyl ether, vinyl ethinyl carbinols, and vinyl and vinylidene halides.  The catalyst may comprise perborates, perchlorates, persulphates, persulphuric acid and perdisulphates together with sulphur dioxide, sodium bisulphite, sodium metabisulphite, sodium hydrosulphite, sodium thiosulphate, dialkyl sulphites, p-toluene sulphinic acid and formamidine sulphinic acid. The copolymerization may be effected batchwise or continuously in aqueous emulsion or dispersion, if desired in the presence of an emulsifying agent. An example describes the treatment of an aqueous stream resulting from the copolymerization of vinyl acetate and acrylonitrile.
Patent GB-623824-A (GB)
Title: A method of manufacture of rotor blade spars for helicopters or rotating wing aircraft
IPC: B21D53/78
Filed: 1947-02-11
Abstract: 623,824. Making screw propellers. DE HAVILLAND AIRCRAFT CO., Ltd., and BROWN, G. H. F. Feb. 11, 1947, No. 3994. [Classes 83 (ii) and 83 (iv)] Forging; extruding.-A spar for making a blade for a helicopter having a part 1 of uniform cross-section and another 2 which is not, is produced by forcing metal through an extruding die into a pressure die to form the part 2 and then allowing the dies to separate while the part 1 is extruded. A hollow billet 13, Fig. 4, in a matrix 8 is forced through a die 9 by an annular plunger 12, the extruded metal being received in a preferably split die 7. When this is full the mandrel 10 is pushed into the position shown by a plunger 11. The die 7 is then released from the matrix and preferably positively traversed over a roller top table while extrusion is continued to form a uniform section 1, e.g. as shown in Fig. 2. The end of the part 2 may then be upset 6, Fig. 1, and the part 1 may be flattened to taper towards the tip T, Fig. 5, e.g. by passing through suitable dies. The centre line 16 of the part 2 may also be at an angle α to that of the part 2. This may have flanges 18 to receive a separately-formed fairing 5.
Patent GB-319178-A (GB)
Title: Improvements in means for circulating glass in the forehearths of glass melting tanks
IPC: C03B5/18
Filed: 1929-02-06
Abstract: 319,178. Rankin, C. H., and Rankin Automatic Glass Feeder Co., Ltd. Feb. 6, 1929. Gathering molten metal.-Relates to a forehearth or trough from which charges of glass are gathered by the moulds of a suction-gathering machine. The invention consists in using a rotary member, dipping into or immersed in the glass, to circulate the glass through the forehearth in order to ensure that a supply of clean, unchilled glass is constantly maintained at the gathering-point. The glass flows from a tank furnace 1, Figs. 1 and 2, into a channel 3 which communicates with one end of a trough 4. The other end of the trough leads to a return channel 5 which is connected with the interior of the tank 1 by an opening 7 and is fitted with a dam 6. A rotary impelling member 8, driven bv a motor 11<a>, is fitted in the channel 5 close to the dam. The glass adheres to the member 8 and is carried around by it until it is stripped off by the dam 6. The rotation of the member thus causes a constant flow of glass from the furnace along the trough and over the dam into the furnace again. An arch 16, Fig. 1, is built over the forehearth, and a gate 17, Fig. 2, is fitted to the channel 3 to serve as a skimmer block and to regulate the rate of flow of the glass. The floors of the channels 3, 4 mav be arranged to fall slightly from the tank wall to a drain hole 14 which is normally closed by a plug. In a modified arrangement, shown in Fig. 4, the glass is not returned to the tank but is circulated around an island 19 in the forehearth by the rotary member 8. A hollow refractory casing 21 may be supported on the island 19, and gas flames, directed into its interior from an opening in the top, issue through flame apertures 24 above the surface of the glass to maintain its temperature. The rotary member 8 may be cylindrical, spherical, or of other shape, its surface preferably being a figure of revolution.
Patent GB-1041443-A (GB)
Title: Agglomeration process
IPC: E04C2/16
Filed: 1964-01-30
Abstract: Inorganic or organic solids in the form of fine or coarse particles, shavings or fibres which are insoluble or soluble in water up to 5% at 25 DEG  C. are agglomerated by treatment with a water-in-oil type of emulsion of styrene, an acrylate and/or methacrylate and/or vinyl ester, and optionally as comonomer an ethylenically unsaturated compound which is insoluble or soluble in water up to 10% at 25 DEG C., which emulsions contain 25-95% water, and polymerization initiatiors and are polymerized when mixed with the above solids. The monomers may be methyl-methacrylate, glycol dimethacrylate, ethyl or butyl acrylate or vinyl acetate.  The comonomers may be a polyester, e.g. derived from maleic acid, phthalic acid and propanediol-(1: 3) or butanediol-(1: 3), or divinyl benzene.  The initiators may be diisopropyl peroxydicarbonate, benzoyl peroxide or azodiisobutyric acid dinitrile or a mixture of potassium persulphate, sodium pyrosulphite and triethanolamine.  The solids may be gravel, blast furnace slag, pumice stone, basalt, polystyrene shavings, sand, wood shavings or cellulose or polyacrylonitrile fibres.  An emulsifier may be used, e.g. a graft polymer of styrene or polyethylene oxide, magnesium stearate, sodium silicate.
Patent GB-876867-A (GB)
Title: Improvements in gas turbine powerplant
IPC: F02C3/04
Filed: 1960-02-05
Abstract: 876,867. Gas turbine plant. GENERAL ELECTRIC CO. Feb. 5, 1960 [Feb. 9, 1959], No. 4171/60. Class 110 (3). A gas turbine power plant comprising a multistage axial flow compressor and a coaxial centrifugal compressor downstream thereof which discharges through an annular diffuser to a combustion chamber feeding a turbine driving the compressors, has the compressor means, turbine means and combustion chamber arranged in seriatim along an axis and a power take-off shaft transverse to the axis extending between the compressor means and combustion chamber. A compressor 10 consisting of a multistage axial flow compressor 17 followed by a centrifugal compressor 18 discharges through a diffusing collector or scroll 11 and ducting 16 to a combustion chamber 15. The combustion products from the combustion chamber drive a turbine 14 connected to the compressor 10 by a shaft 19. The exhaust gases from the turbine 14 are supplied to a free power turbine 13 connected by gearing to power take-off shaft 22. In a modification the two turbine wheels are arranged on a single shaft driving the compressor and external load. The turbines 13, 14 may be multi-stage turbines.
Patent GB-138910-A (GB)
Title: An improved slice stacker for slicing machines
IPC: B26D7/32
Filed: 1920-02-11
Abstract: 138,910. Berkel, C. F. M. van. June 28, 1917, [Convention date]. Cutting slices in succession.-In a slicing machine the receiving table is moved intermittently so that cut slices are deposited in overlapping relation. As shown, the invention is applied to the stacking mechanism described in Specification 135,508, the slice-receiving platform 40 being intermittingly moved by a pin 61 carried by the cam-shaft which returns the stripping fly described in the said prior Specification. The platform 40 is carried by a rack-bar 45, Fig. 1, running on rollers 46 and having teeth gearing with a pinion rotating with a ratchet wheel driven by a pawl 57 carried by a slotted arm 59 actuated by the pin 61. The teeth of the ratchet wheel may be masked by an arc plate adjusted by a graduated arm 71 for varying the distance of each movement of the platform. The platform is intermittingly fed to the left until an incline 95 carried by the rack bar engages a pin 93 on a lever 81 and causes a disk 80 to engage pins holding out the pawl 57 and the retaining pawl of the ratchet wheel, when a spring 75 returns the platform to the right so that another layer may be deposited. When, on this return movement of the platform, an incline 94 on the rack bar engages a pin 92 on the lever 81, the disk 80 is withdrawn and the pawls allowed to re-engage with the ratchet. In the modification shown in Fig. 6, the rack bar 45 is replaced by a smooth bar 102 intermittingly moved first in one direction and then in the other by a ring member 103 held askew by a spring so that it grips the bar while moving in one direction only. The member 103 is pivoted to a slide 100 reciprocated by the pin 61, and the direction of travel of the bar 102, and therefore the platform 40, is reversed when necessary by stops 118, 119 carried by the bar 102 which contact with the member 103 and reverse its skew to cause it to bind on the bar in the reverse direction.
Patent GB-1005607-A (GB)
Title: Method of and apparatus for monitoring viscosity
IPC: G01N11/04
Filed: 1963-02-01
Abstract: 1,005,607. Electric selective signalling. BRITISH PETROLEUM CO. Ltd. Jan. 23, 1964 [Feb. 1, 1963], No. 4200/63. Heading G4H. [Also in Division G1] The viscosity of a liquid such as oil is measured by determining the rate of formation of drops at the outlet 20 of a capillary tube 19 through which the liquid flows under laminar conditions. The rate is measured either photoelectrically as shown or by an electrical capacitance drop detector, the output pulses being applied to a digital counter used to control blending of the oils. The output pulses may alternatively trigger an electric circuit to charge an electrical capacitor having a discharge rate longer than the time interval between successive pulses. The voltage across the capacitor being proportional to the viscosity may be converted to a D.C. signal used in an electronic control system. The liquid is maintained at a constant temperature by a heater 15 or by total immersion of the apparatus in a water or oil bath. In a modification a needle may control the diameter of the capillary tube 19 and this may be adjusted to maintain a constant drop rate.
Patent GB-1202777-A (GB)
Title: Lacquers
IPC: C08F20/34
Filed: 1968-01-26
Abstract: 1,202,777. Lacquer. FARBENFABRIKEN BAYER A.G. 26 Jan., 1968 [27 Jan., 1967], No. 4204/68. Heading C3P. A one-component stoving lacquer is produced by subjecting a vinyl monomer to a mixed polymerization with a monomer containing one alcoholic hydroxyl group and one ethylenic double bond and a #-isocyanatoethyl methacrylate or acrylate masked with an oxime. Suitable monomers are the amides and nitriles of methacrylic or acrylic acid, substituted styrenes, vinyl acetate, or more preferably esters of methacrylic or acrylic acid and styrene. Suitable alcoholic hydroxyl group containing monomers are allyl alcohol, oxyalkylated p-isopropenylphenol and N-methylol methacrylamide on acrylamide, or more preferably methacrylic or acrylic acid hydroxyl alkyl esters. The oxime adducts may be prepared by reacting #-isocyanato-ethyl acrylate or methacrylate with an oxime of an aldehyde or ketone. In the examples: (1) ethyl acrylate, styrene, 2-hydroxypropyl methacrylate and #-isocyanatoethyl methacrylate masked with acetoxime, are heated in xylene under nitrogen in the presence of azodiisobutyronitrile and tert-dodecyl mercaptan, and the resulting polymer solution is mixed with pigments to form a lacquer; (2) ethyl acrylate, butyl acrylate, styrene, methyl methacrylate, 2-hydroxypropyl methacrylate, and #-isocyanatoethyl acrylate masked with acetoxime are polymerized in the presence of dibenzoyl peroxide; (3) ethyl acrylate, styrene, 2-hydroxypropyl methacrylate, the acetoxime adduct of #-isocyanatoethyl methacrylate, dimethylformamide, sodium pyrosulphite, sodium lauryl sulphate potassium persulphate and water are heated to form a polymer dispersion from which lacquer films may be produced.
Patent GB-1376622-A (GB)
Title: Fluid pump control
IPC: F04B49/20
Filed: 1972-01-31
Abstract: 1376622 Centrifugal pumps S E COPPEN 31 Jan 1972 [9 Feb 1971] 4303/71 Heading F1C [Also in Division G3]  Apparatus for controlling a fluid pump, particulary in fire fighting equipment comprises first fluid pressure responsive means for comparing a first fluid pressure with a first reference value thereof and to provide a first signal when the first fluid pressure falls below the reference values and second fluid pressure responsive means for comparing a second fluid pressure with a second reference value thereof and any deviation thereof forming an output signal fed to a regulating device, the first and second fluid pressure responsive means being so connected that when the first fluid pressure is above the predetermined value the second fluid pressure is maintained at its reference value and when the pressure is below the predetermined value the regulating device tends to restore the first fluid pressure to its reference value. A pump 13 is driven by an I.C. engine 11 controlled by a servomotor 10. Pressure sensitive potentiometric transducers 1, 2 are provided at the inlet 12 and outlet 14 to feed voltage signals for comparators 5, 8. Potentiometers 3, 4 provide signals for the comparators and may be set to minimum allowable inlet pressure and the required delivery pressure. If the inlet pressure is above the minimum set, comparator 5 gives a signal to drive amplifier 6 to apply a voltage across potentiometer 4. Comparator 8 compares signals from transducer 2 and potentiometer 4 and provides a signal for amplifier 9 and so cause the servomotor 10 to increase or decrease the engine speed to achieve the set delivery pressure. If the inlet pressure falls below the minimum preset value, a negative signal from comparator 5 drives the amplifier 6 so that the potential applied to potentiometer 4 is reduced. This, in turn, causes comparator 8 to reduce the engine speed, until the inlet pressure regains the value set on the potentiometer 3. A governor may be provided to shut off the engine if a particular engine speed is exceeded.
Patent GB-119192-A (GB)
Title: Improvements in or relating to Electrically Propelled Road Vehicles.
IPC: B60L11/00
Filed: 1918-03-12
Abstract: 119,192. Edison Accumulators, Ltd., and Monnot, J. F. March 12, 1918. Electrically-propelled road cars and wagons.- The car is driven by motors a arranged in the chassis between the front and rear wheels, the controller m which is of the kind described in Specification 116,747, [Class 38 (iii), Electric motor control systems &c.], being arranged between the motors; the batteries are carried on the front of the vehicle under the bonnet and driver's seat. The motors drive the rear wheels through chain gearing b and bevel gears e, each driving shaft c being fitted with universal joints g. The rear wheels are provided with brakes of the kind described in Specification 118,773, [Class 103 (i), Brakes &c.], additional brakes l being provided on the motor shafts. A reversing switch o is provided.