baber/WOPTO huggingface dataset:
Patent GB-393112-A (GB)
Title: Improvements in or relating to liquid level regulating apparatus
IPC: A43D13/00
Filed: 1932-07-26
Abstract: 393,112. Regulating liquid-levels. CAMPBELL, G., South Terrace, Short Hills, New Jersey, U.S.A. July 26, 1932, No. 21088. Convention date, Aug. 3, 1931. [Class 123 (i).] In apparatus for regulating liquid-level in a vessel 22 containing hot water and steam under pressure with a control means such as a valve pump or trap for adjusting flow to or from the vessel, an ascending outtake pipe 41 is provided with a lower opening normally immersed in the liquid and one or more lateral apertures 42 normally above the liquid level and admitting vapour to the pipe whereby variations in level cause variations of liquid and vapour proportion ascending the pipe to regulate the control means. The control valve 33 is operated through a pressure-responsive diaphragm 35 which is operated through a pipe 37 by the variable pressure in a vaporizing chamber 45 into which the outtake pipe 41 delivers through a nozzle 43 a mixture of water and steam which escapes through a nozzle 44 either directly or through further nozzles to atmosphere. The lateral apertures 42 in the pipe 41 may be of different dimensions and at different heights. The diaphragm 35 moves a rod 34 against a spring 36 into a perforation in a disc 33 which then closes on a seat 32 when the water level rises and opens it to allow of water supply through pipe 29 when the level falls. A gauge 38 and hand valves 30, 39 are fitted. The vessel 22 is connected by pipes one beneath and one above the water level to a vessel 20, which may be a hot well into which condensate is led by a pipe 19. Specification 245,445, [Class 123 (i), Liquid-level regulating &c.], is referred to.
Patent GB-1067217-A (GB)
Title: Gas burner
IPC: F23D14/04
Filed: 1964-05-21
Abstract: 1,067,217. Burners. F. A. VAN DE ROER. May 21, 1964 [May 24, 1963], No. 21116/64. Heading F4T. A gas burner has tubes 12 provided with apertures 13 to accommodate burner heads which may have a single slot such as 9, a symmetrical cruciform slot such as 8, 9 or a combination of such slots 8, 9 and 10 as shown. The upper parts of said heads adjacent the slots have parallel walls and are arranged in overlapping relation with heads in the same and adjacent tubes 12.
Patent GB-575068-A (GB)
Title: Improvements in or relating to piezoelectric devices
IPC: H03H3/02
Filed: 1943-12-16
Abstract: 575,068. Piezo - electric crystals. BRUSH DEVELOPMENT CO. Dec. 16, 1943, No. 21148. Convention date, Dec. 16, 1942. [Class 40 (v)] An electrode is applied to a fusible piezo-electric crystal by applying a layer of conducting material on a surface of the crystal, heating the layer to a temperature sufficient to cause local fusing of the crystal material and discontinuing the heating to allow intimate bonding of the layer to the crystal. Fig. 2 shows an arrangement for autogenously welding the surfaces of crystal plates 13, 15 to a metal electrode plate 11. The crystal is supported on a block 23 of heat-conducting material and pressure is applied by a weight 25. Current leads are attached by clips 7 and either A.C. or D.C. of a magnitude and duration determined by experiment, is applied to heat the electrode 11 just sufficiently to cause local fusion and cause close bonding of the electrode to the crystal plates. The heating of the electrode may be effected by induction from a highfrequency source. The bonding is mechanically stronger if the electrode plate is cut away in parts or liberally provided with holes or is in the form of fine mesh screen. The invention is applicable to crystals of Rochelle salt and isomorphous substances, and also to primary alkali' phosphates and arsenates and isomorphous substances. Specifications 318,934, [Class 40 (v)], 366,252 and 454,595 and U.S.A. Specifications 2,168,943 and reissue 20,213 are referred to.
Patent GB-169845-A (GB)
Title: Improvements in or relating to three-electrode ionic tubes
IPC: H03B5/10
Filed: 1920-07-13
Abstract: 169,845. Ree, J., Radio Communication Co., Ltd., and Turner, L. B. July 13, 1920. Addition to 139,867. Thermionic oscillation generators; heterodyne receiving systems. - In an arrangement of two three-electrode valves for the generation of oscillations, as described in the parent Specification, in which resistances R<1>, R<2> in the anode or grid circuits of one valve V<1> are included in the grid and anode circuits respectively of the other V<2>, an oscillatory circuit L<1>C<1> is connected across two points in the valve system, the potentials of which vary in opposite senses, for example, across the anodes P<1>P<2>. In the arrangement shown, one batterv H is common to the two anode circuits and condensers C<2>, C<4> shunted by resistances R<3>, R<4> are included in the grid circuits. The resistances R<3>, R<4> may be connected directly across the grid and filament. When used as a local oscillator, a point of oscillating potential, such as one of the anodes, is connected to a metal plate placed near the receiving circuits.
Patent GB-1476231-A (GB)
Title: Piezoelectric igniters
IPC: H02N2/00
Filed: 1974-05-14
Abstract: 1476231 Piezoelectric igniters BRAUN AG 14 May 1974 [14 May 1973 (2) 16 Aug 1973 (2)] 21209/74 Heading H2A In a piezoelectric igniter wherein a hammer 9 is releasable from a restraining device to be driven towards a transducer 3 under the action of a compression spring 19 which is located between, and which engages, the hammer 9 and an actuator 14, an open-ended housing 1 of the igniter is formed of plastics material and receives the components of the igniter in axial alignment with the transducer retained adjacent a closed housing end face 2, and with crystal elements 4, 5 of the transducer located adjacent each other and the housing. In the arrangement shown, the hammer 9 is ferromagnetic and is normally held at rest by a pair of pole plates 17 of a permanent magnet 16. A return spring 11 provides a slight axial bias on the crystals 4, 5 to maintain a good contact with an earth electrode 22. The crystals 4, 5 have a slight lateral clearance relative to the housing 1. In the embodiment of Fig. 4 (not shown), the earth electrode is omitted, and in that of Fig. 5 (not shown), the housing (101) has a curved bottom (102). In the arrangement of Fig. 6 (not shown), a threaded plug (122) may be screwed into the housing to adjust the bias force of a spring plate (123) acting on the crystals (104, 105). In the embodiment of Figs. 8, 9, 10 (not shown), a hammer (209) has axial grooves (200) in its periphery to provide passageways for compressed air as the hammer moves along the housing. In the arrangement of Figs. 11-13 (not shown), a hammer (309) is guided by a pin (320) fixed to a striker plate (308), and a pair of projections (315) on an actuating cap (314) are received in a distorted S-shape guide groove (312) in the housing (301).
Patent GB-631586-A (GB)
Title: Improvements in and relating to means for freeing from dust and cleaning filtering or non-filtering walls or the like
IPC: B01D46/04
Filed: 1938-07-18
Abstract: 631,586. Separating dust from gases. DAMOND, E. July 18, 1938, No. 21239. Convention date, July 27, 1937. [Class 8(ii)] Parts of apparatus are freed from dust deposits by means of a vibrator the speed of which is varied from zero to a maximum exceeding the critical speed at which resonance takes place in the parts, and back to zero, the cycle of variations being frequently repeated automatically so as continuously to cause the vibrator to pass through the range of speeds. In Fig. 1, a vibrator a is mounted on bars c, c<SP>1</SP>, fixed to brackets d, d', connected by bolts e to one of the walls of a hopper b. In Fig. 2, a vibrator a is adjustably secured to a plate k connected by an insulating bar h to a high voltage grid g to be freed from dust. In Fig. 3, a vibrator a is mounted on a casing n the lower wall o of which carries rods p to which are fixed radial plates q inside the fabric sleeves u of a filter, the casing being suspended by rigid or resilient rods s from a spring r. In a modification of this form, Figs. 4A-4B (not shown), sleeves outside the tubes u are carried by a casing adjustable vertically on a rod depending from the vibrator. In Fig. 5, a vibrator a is fixed to a tube u inside which is a sieve x.
Patent GB-500204-A (GB)
Title: Process for the extraction of pure cellulose from annual and biennial plants
IPC: D21C3/26
Filed: 1937-08-03
Abstract: 500,204. Obtaining cellulose. CONTARDI, A., and CIOCCA, B. Aug. 3, 1937, Nos. 21419 and 21420. Convention dates, July 31, 1936 and Nov. 3, 1936. [Class 2 (ii)] To obtain cellulose of high a cellulose and low ash content, suitable, e.g. for nitration or for the viscose industry, the stems or leaves of annual or biennial plants such as sorghum, buckwheat, sugar cane, marsh cane, bamboo, alfa, algerian esparto, cotton plant refuse or banana or palm leaves are subjected for 10 hours at 4 atmospheres pressure to treatment with at least 5 times their weight of a 1À5 per cent solution of sodium bisulphite, followed by washing, mechanical disintegration and a further treatment with caustic soda of less than 1 per cent strength. The material is finally washed, bleached and neutralized. In an example, the alkaline treatment is conducted for 5-6 hours at 2-3 atmospheres pressure with a weight of NaOH solution at least 5 times that of the material being treated. For the alkaline treatment, and for preparation of the sodium bisulphite, use may be made of caustic soda recovered in the course of artificial silk manufacture. The Specification as open to inspection under Sect. 91 states that the second treatment with alkali may be performed hot or cold at ordinary pressure but with a more concentrated soda solution. It also includes a claim for treating the material first with dilute soda solution and then with a dilute bisulphite solution. This subject-matter does not appear in the Specification as accepted.
Patent GB-725089-A (GB)
Title: Improvements in driving gear for internal combustion engine power plant
IPC: F02B73/00
Filed: 1953-08-04
Abstract: 725,089. Power plant ; driving gear. MOLLER, E., POUNDER, C. C., and REBBECK, Sir F. E. Aug. 4, 1953, No. 21440/53. Class 7 (2). [Also in Group XXIV] In driving gear for power plant wherein two opposed engines having the same hand of rotation and parallel crankshafts arranged at opposite ends of a gear box, the latter including a pair of input shafts 6, 7 geared together by gears 8, 9 of equal diameter, and wherein each engine shaft is connected through a hydraulic torque-converter to one of the input shafts so that either or both engines can drive these shafts, each input shaft is provided with an input gear wheel 10 or 11, rotatable on its respective shaft and meshing with a first speed gear 15 of a change-speed mechanism interposed between the input shafts and an output shaft 19, the gears 10, 11 being adapted to be coupled to their respective shafts by selective clutches 12, 13 whereby either gear 10, 11 is coupled to its shaft when the other is uncoupled so as to obtain either forward or reverse motion of the gear 15. Fixed on the ends of a countershaft 14 are the gears 15, 16 of different diameters which mesh with gears 17, 18 freely rotatable on the shaft 19 having a clutch 20 splined thereon ; gears 10, 11 and 15 are in constant mesh. Upon engaging clutch 12 both engines drive gears 10, 15, one through shaft 6 and the other through shaft 7, gears 8, 9 and shaft 6. Since gear 15 is larger than gear 16, and gears 17, 18 are correspondingly inversely related, a high forward speed will be obtained by engaging clutch 20 with gear 17, and a low forward speed will result by connecting clutch 20 with gear 18. The engagement of clutch 13 enables a reverse drive to be effected for either coupling position of clutch 20. Either engine may be disconnected from the above gearing, in the event of failure, for example, by emptying its converter. More than two speed changes may be provided for.
Patent GB-705614-A (GB)
Title: Improvements in or relating to insulated electric cables
IPC: H01B13/18
Filed: 1951-09-13
Abstract: 705,614. Air space cables. PLANER, V., and PLANER, G. V. Sept. 13, 1951, No. 21571/51. Class 36 [Also in Group V] A thermoplastic insulating sheath 11, e.g. of polythene, has grooves 11a or indentations 32 which centralize a metallic conductor core 12. The grooves may be in the form of a single or multiple thread. Each groove may be filled with a filament of insulating material that has been used to form the groove ; this filament may be of polystyrene, nylon, polyvinylidene chloride or glass silk, and may be coloured for identification purposes, or the grooves or indentations themselves may be coloured with varnish, paint &c. if they contain no filaments. The sheath 11 may be covered with a metallic outer conductor in the form of a copper wire braiding or a metallized band of insulating material, and then further covered with a protective coating of polyvinylidene chloride or nylon, then cotton, silk or glass silk fabric may be applied and wax-impregnated or varnish-coated. Several such cables may be united to form a composite cable which may then be sheathed with lead or aluminium.
Patent GB-284738-A (GB)
Title: Improvements in and relating to the generation of gas
IPC: F23C99/00
Filed: 1926-09-01
Abstract: 284,738. Suffern, E. S., Gasified Fuel, Ltd., Hazlehurst, H. E., and Margetson, O. Sept. 1, 1926. Producers.-Powdered fuel and a limited supply of air are injected through one side wall of a combustion chamber in a direction away from the outlet and obliquely to the axis so that the stream of burning fuel is caused to return and flow towards the outlet through and around the incoming stream of fuel. The fuel &c. is delivered through a burner C, Fig. 1, towards the inclined bottom 5 of the combustion chamber, and is deflected by the front wall 2a and returns towards the restricted outlet 6. Here it meets additional air heated in the space 3 between the casing 1 and lining 2, and delivered through the space 15 and burnt in a secondary combustion chamber B arranged in a boiler flue. The primary combustion chamber is mounted on wheels 10 to render it portable, and is detachably coupled to the flanged end of the flue at 13. In an alternative construction, the primary combustion chamber is lined with hollow bricks through which air is passed to openings in the lining extension 16 which may be provided with inwardly projecting bricks to ensure mixing of the secondary air with the partly burnt gases. In an application to a waste heat boiler, air and fuel are supplied through the passage 22, Fig. 2, in the lining of the combustion chamber A and delivered through the inlet C upwardly and towards the top and front. Alternatively the passage 22 may be provided in the roof of the combustion chamber A the fuel being delivered towards a sloping bottom and towards the front wall. If no provision be made for admission of secondary air, the gases are led through the boiler tubes and subsequently collected and utilized. A supplementary supply of fuel may be admitted to the primary combustion chamber.
Patent GB-350296-A (GB)
Title: Improvements relating to the union of metal surfaces by welding
IPC: B23K11/20
Filed: 1930-07-16
Abstract: 350,296. Electric incandescent lamps. WESTINGHOUSE LAMP CO., Bloomfield, New Jersey, U.S.A.-(Assignees of Fitzpatrick, J. B. ; 357, Tremont Avenue, East Orange, New Jersey, U.S.A.) July 16, 1930, No. 21594. Convention date, July 17, 1929. [Class 39 (ii).] Refractory metals of the tungsten class including chromium, molyb denum, or alloys thereof, in rod, wire or sheet form are spot or arc weldec to less refractory ductile metals such as nickel, chromium-nickel, or coppernickel alloys, such as that sold under the Registered Trade Mark " Monel " by placing the parts together with a large area of contact such that the welding heat applied at one point is sufficient to cause union at parts beyond the area of grain recrystallization of the higher refractory metal. Thus the joint includes a portion of fibrous ductile unrecrystallized higher refractory metal and is strong and ductile, breakage of the wires beyond the joint during subsequent handling or operation being thus avoided. In welding the lead-in or support wires to the filament of an incandescent electric lamp, or, as shown, to the filament 1 of an electric discharge device, the support wires 2, 3 which are positioned in an insulator 4 and electrically connected to lead wires 5, 6 are bent and have flattened ends in alignment with the ends of the filaments which overlap the flattened ends. Welding is effected at the point 9 and the welded union extends beyond the part of the filament which is subject to recrystallization due to the welding heat. With a tungsten filament of 8 mils diameter, nickel wires 2, 3 of 25 mils diameter and a flattened end 350 mils long and 18 mils thick, welded bv a current of 75 amps at 0À6 volts for ten seconds, a length of 1 mm. in either direction from the welding point along the axes is stated to be subject to recrystallization. The welding heat is applied at a point 2 mm. below the top of the flattened portion so as to include in the weld a portion of unrecrystallized filament. Specification 8641/07 [Class 39, Electric lamps &c.], is referred to.
Patent GB-1500386-A (GB)
Title: Transfer dyes
IPC: C09B1/28
Filed: 1975-05-21
Abstract: 1500386 Transfer printing BASF AG 21 May 1975 [4 July 1974] 21759/75 Heading D1B A transfer printing process uses dyes of the formula: where R' is H, Cl, Br, or C 1-4  alkylamino; R<SP>2</SP> is H, Cl or Br; R<SP>3</SP> is H or OH provided at least one of R<SP>1</SP>-R<SP>3</SP> is other than hydrogen. The dyes are used in printing colour formulations with which an auxiliary carrier is printed. Examples are given in which paper supports, printed with dye formulations containing a dye, solvent and polymeric binder, are used to transfer print polyester and synthetic polyamide cloth.
Patent GB-189187-A (GB)
Title: Improvements in rotary sleeve valve four-stroke cycle internal combustion engines
IPC: F01L7/08
Filed: 1921-08-18
Abstract: 189,187. Yeo, O. E., and Edwards, W. F. M. Aug. 18, 1921. Valves.-A. rotary sleeve valve for a four-stroke engine is provided with a row of ports g at its upper end controlling inlet and exhaust ports q, p in the cylinder, and with a similar row of ports h controlling inlet and exhaust ports q<1>, p<1> at the other end of the stroke. The ports are so arranged that the upper inlet ports are opened on the commencement o f the suction stroke, and are closed, and the lower inlet ports opened, at the bottom of the stroke. Similarly, the exhaust ports at the lower end are opened at the end of the working stroke, and the upper ones are opened slightly later for the exhaust stroke. The upper end of the sleeve valve is made conical and bears at f in a groove in the cylinder head; it may also be formed with a shoulder bearing on a ring n adjustable by means of screws o. Instead of the conical head, the cylindrical walls of the sleeve may extend straight upwards into the groove in the cylinder head. Valve-gear.-The sleeve valve is rotated by bevel gearing i, k, k<2>, k<3> and worm gearing k<5>, k<6>.
Patent GB-122178-A (GB)
Title: Improvements in or relating to Ball Bearings.
Inventor: LARSSON IVAN AUGUST MAURITZ
IPC: F16C19/20
Filed: 1918-12-31
Abstract: 122,178. Larsson, I. A. M. Dec. 31 1918. Ball bearings. - The balls of a ball bearing are spaced by rollers 4 running on tracks 6 on rings 5 fixed to the inner or outer race ring. To avoid sliding friction, the ends of each roller have a different diameter to the central portion contacting with the balls, and these diameters are in proportion to the diameters of the roller track 6 and the ball track on the race ring to which the rings 5 are fixed.
Patent GB-973678-A (GB)
Title: Improvements in or relating to hydraulic pump drive apparatus
IPC: F03C1/08
Filed: 1962-06-06
Abstract: 973,678. Hydraulic reciprocating pumps and motors. H. OTT, [trading as LEWA HERBERT OTT KOMM.-GES.]. June 6, 1962 [June 7, 1961], No. 21957/62]. Heading F1A. In an hydraulic drive for a reciprocating closing pump, the driving motor piston is connected to the housing of a shuttle valve controlling the flow of liquid to the piston, and a control member is connected to the valve shuttle, or vice versa, the arrangement being such that the motor piston follows the movements of the control member, which movements may be varied, e.g. to give accurate simple harmonic motion. In the embodiment of Fig. 1, valve housing 5 is secured to motor piston 9 connected to pump piston 15, and spring-loaded shuttle 6 is connected through a variable-stroke crank 10 to a variable-speed electric motor 13. Shuttle 6 controls flow from an electrically driven screw or gear feed pump 2 to alternate sides of piston 9. A pressure relief valve 4 is provided in the feed pump circuit in case of overloading. In the embodiment of Fig. 2, motor piston 29 is fixed and cylinder 28 is reciprocable and connected to two closing pump pistons 35. Valve housing 25 is secured to cylinder 28 and shuttle 26 is movable by electric motor 33 through a cam 31 and lever 43. A feed pump 22 supplies liquid continuously to the left hand side of piston 29 which is of smaller surface area than the right-hand side, to which shuttle 26 directs liquid for the return stroke. An accumulator 38 and a pressure relief valve 24 are provided in the feed pump circuit.
Patent GB-977065-A (GB)
Title: Treatment of titanium dioxide pigment
IPC: C09C1/36
Filed: 1962-06-07
Abstract: Titanium dioxide pigment containing aggregates of " ultimate " particles is agitated in the form of a fluid slurry with tinctorially inert solid grinding particles between 10 and 40 U.S. mesh in diameter. The starting material may be prepared by combustion of TiCl4 with oxygen or by the sulphate process, and may be hydro-classified to remove particles larger than 4m  in diameter. The pigment may contain other oxides such as those of aluminium and silicon. The slurry may be formed in an inert organic liquid such as benzene, cyclohexane, ethyl acetate, acetone, pyridine, or in water or an aqueous solution, e.g. titanic sulphate and/or aluminium sulphate, or sodium silicate, or sodium stearate.  Brine may be used when sodium chloride particles are used as the grinding medium. Other grinding media specified include silica, alumina, zirconia and rutile titanium dioxide. They may be used in amounts of from 5 to 15 times the weight of the pigment. The agitation may be carried out by conventional means, and after agitation, the pigment may be separated from the suspension liquid by any convenient method.ALSO:Titanium dioxide pigment containing aggregates of "ultimate" particles is agitated in the form of a fluid slurry with tinctorially inert solid grinding particles between 10 and 40 U.S. mesh in diameter.  The starting material may be prepared by combustion of TiCl4 with oxygen or by the sulphate process, and may be hydroclassified to remove particles larger than 4m  in diameter.  The pigment may contain other oxides such as those of aluminium and silicon.  The slurry may be formed in an inert organic liquid such as benzone, cyclohexane, ethyl acetate, acetone, pyridine, or in water or an aqueous solution, e.g. titanic sulphate and/or aluminium sulphate, or sodium silicate, or sodium stearate.  Brine may be used when sodium chloride particles are used as the grinding medium.  Other grinding media specified include silica, alumina, zirconia and rutile titanium dioxide. They may be used in amounts of from 5 to 15 times the weight of the pigment.  The agitation may be carried out by conventional means, and after agitation, the pigment may be separated from the suspension liquid by any convenient method.