baber/WOPTO huggingface dataset:
Patent GB-619777-A (GB)
Title: Improvements in or relating to variable resistance devices and to electrical controlsystems incorporating such devices
IPC: H01C10/14
Filed: 1946-09-03
Abstract: 619,777. Linkwork. NICHOLS, W. T. Sept. 3, 1946, No. 26452. [Class 80 (iii)] .[Also in Groups XXXVI and XXXVII] In the variable resistance device shown, Fig. 1, movement in either direction of control lever 8 produces unidirectional movement of lever arm 1 so that contact 2 carried by arm 1 describes an arcuate path over resistance 15. The bell crank lever 1, 3 and co-operating pivoted lever 4 are connected together by a pin and slot at 5 and carry respectively rollers 6, 7. For clockwise movement of lever 8, cam lever 17 pivots counterclockwise so that roller 7 is freed from cam face 10 by pin 5 acting on lever 4 and roller 6 rotated by cam face 9. For counter-clockwise movement of lever 8 cam lever 17 pivots clockwise, roller 6 disengages and roller 7 is rotated by cam face 10. In the first case roller 6 produces movement of arm 1 and thus contact 2 and in the second case roller 7 produces the movement both in the same direction. Different control mechanisms for producing rectilinear movement of contact 2 may be utilized for example a rack and pinion, Fig. 2 (not shown), a crank and connecting rod, Fig. 4 (not shown), or Fig. 3 (not shown) an arrangement in which either one of a pair of rollers on a single pivoted member produces the required unidirectional movement.
Patent GB-208604-A (GB)
Title: Improvements in and relating to steam condensers and boiler feed water systems
IPC: F22D1/32
Filed: 1922-09-30
Abstract: 208,604. Hick, Hargreaves, & Co., Ltd., and Johnson, J. E. Sept. 30, 1922. Condenser systems.-In a steam condensing and feed-water supply plant, the condensate from the condenser a is delivered into a feed reservoir d, from which it is withdrawn and supplied under pressure to the feed pump j, and from which some of the water is returned to the condenser through a pipe n, the quantity returned being controlled by means actuated by the variations in the level of the condensate coming from the condenser. The condensate may be heated either before or after entering the reservoir in an auxiliary condenser and steam heater. The reservoir may be elevated above the feed pump or the water may be passed into a head tank g. The return of water to the condenser is controlled by a valve o operated by a float in the condensate collecting chamber o<2>. An auxiliary tank l neceives overflow from the head tank, condensate from the auxiliary condenser or heater, and make-up water. The auxiliary tank is connected to the condenser by a pipe m, through which water flows to the condenser when the level in the auxiliary tank rises above a certain point. The valve controlling the supply of make-up water through a pipe l<1> is operated by a float in the feed reservoir. When the make-up water is supplied from an evaporator, the supply of heating steam to the evaporator is controlled by a float device operated by the variations of the level in the feed reservoir. The feed reservoir or the head tank may be closed and the space above the water therein filled with low pressure steam. Specification 205,248. [Class 123 (ii), Steam generators], is referred to in the Provisional Specification.
Patent GB-618951-A (GB)
Title: Method of and apparatus for radio direction finding
IPC: G01S1/02
Filed: 1945-10-10
Abstract: 618,951. Supplying current to moving conductors. DYKES, W. U. (Steinhoff, J. R.). Oct. 10, 1945, No. 26492. [Class 38 (i)] [Also in Group XL (c)] In an indicating instrument for a radio directionfinder (see Group XL (c)), wherein current is supplied to a continuously rotatable rotor coil through the bearings thereof, the shaft of the rotor is pivoted in the jewel O, through a small hole in which a platinum wire attached to the tip of the shaft passes into a well P filled with mercury so that electrical contact is achieved between the adjusting screw N and the coil.
Patent GB-408233-A (GB)
Title: Improvements in and relating to tins and like containers having flanged lids
IPC: B65D43/26
Filed: 1932-09-24
Abstract: 408,233. Tins &c. WAITE, R. T., Porthmeor, Bescott Road, Pleck, Walsall. Sept. 24, 1932, No. 26536. [Classes 18, 66, and 125 (iii).] The flange of the lid of a tin &c. is formed with a wedge-shaped vertical slit and fitted with means for drawing together the edges of the slit to contract the flange. In the construction shown in Fig. 4, a finger plate 11 is pivoted to the flange at one side of the slit (not shown) at 9 and has a slot 12 in which engages a pin 10 mounted on the flange at the opposite side of the slit. In Fig. 5, the edges of the slit are turned outwardly at 14 and engaged by a sliding finger plate 15 which contracts the flange on being moved downwardly. Reference has been directed by the Comptroller to Specification 24534/96, [Class 125].
Patent GB-707318-A (GB)
Title: Improvements in and relating to starting and operating circuits for high pressure gaseous discharge devices
IPC: H05B41/231
Filed: 1951-11-13
Abstract: 707,318. Supply system for space discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 13, 1951 [Nov. 13, 1950], No. 26560/51. Class 38 (4) To 'limit the discharge current on initiation of the arc when the arc volt drop is low, a resistor 7 exhibiting a negative temperature coefficient of resistance at and below a predetermined temperature which is not higher than that of the steady operating condition and a positive coefficient above such predetermined temperature, is provided in the series operating circuit of a high pressure discharge device, particularly a high pressure mercury vapour lamp 1. The resistor may be the ballast resistor, and may be of silicon carbide. The lamp is also connected in series with an inductor 8, and as shown, is supplied with D.C. through a switch 6 ; the supply alternatively may be alternating. The lamp may be started by an interrupter 17 which supplies alternating current to the primary winding 15 of a starting transformer 14. The secondary winding 13 thereof charges a capacitor 10 across which is connected a spark gap 11 and an extension 8a of the inductor 8. The components 8a, 10, 11 form an oscillatory circuit which applies an H.F. potential, amplified by the autotrans'ormer action of the inductor 8 and its extension 8a, across the lamp. A contactor 16 whose actuating winding 24 is connected across the resistor 7, disconnects the starting circuit when the voltage across the resistor has risen to its normal operating value. Specification 612,958 is referred to.
Patent GB-1523537-A (GB)
Title: Process of producing sulphur dioxide from bisulphite
IPC: B01D53/77
Filed: 1976-06-25
Abstract: 1523537 Electrodialytic splitting of sulphite and bisulphite solutions ALLIED CHEMICAL CORP 25 June 1976 [27 June 1975] 26588/76 Heading C7B Sulphites and bisulphites in aqueous solutions are subjected to electrodialytic water splitting to produce a liquor containing sulphur dioxide and a basic solution; the splitting may be achieved in a membrane water splitter consisting of cation exchange and bi-polar membranes. The process is of particular application in the removal of sulphur dioxide from gas streams wherein the sulphur dioxide is absorbed in an aqueous alkaline solution with the formation of soluble sulphites and bisulphites in aqueous solution which can then be subjected to electrodialytic water splitting, as above, to produce a sulphur dioxide containing liquor and an alkaline solution for recycle to the absorption stage of the process. Sulphur dioxide gas may readily be recovered from the liquor e.g. by heating and/or by blowing air through the liquor. The sulphate formed in the absorber by oxidation of the sulphur dioxide may be removed by, for example, further water splitting in a two compartment cell to produce the corresponding bisulphate which is then treated with lime to precipitate calcium sulphate. Alternatively the sulphate containing solution may be split in a three compartment membrane water splitter to form sulphuric acid.
Patent GB-1036968-A (GB)
Title: Improvements in or relating to fluid flow valves
Inventor: HELMAR TROST NIELSEN
IPC: F16K1/48
Filed: 1964-06-26
Abstract: 1,036,968. Valves. DANFOSS A/S. June 26, 1964 [July 6, 1963], No. 26663/64. Heading F2V. The spindle 3 of a valve is formed at its lower end with a conical part 5 which is received in a conical recess 7 formed in a resilient closure member 6, a metal disc 9 being welded or vulcanized in the closure member and co-acting, in the closed position, with a shoulder 12 on the spindle to distribute the closing force over a large area. The disc also ensures that the force required to assemble the closure member on the disc is less than that required to remove it. The shoulder 12 provides a fulcrum about which the closure member may move to accommodate misalignment. In the open position the top surface 14 of the closure member coacts with surface 15 of the body to seal the passage 4 through which the spindle passes, thus allowing glands to be changed. The recess 7 may extend through the closure member and the surface of the spindle may be roughened to increase the friction holding the closure member in place.
Patent GB-177118-A (GB)
Title: A new or improved toy
IPC: A63H33/00
Filed: 1921-10-10
Abstract: 177,118. Wilson, J. Oct. 10, 1921. Spinning-toys held in the hand during operation.-Relates to toys of the kind described in Specification 4749/10 comprising a notched member a of rectangular cross-section and a rotatable member e freely rotatable on a pin on the end of the member a and adapted to be rotated by rubbing the latter. According to the present Specification, in order to facilitate the operation of the toy the notches b are formed in one of the ridges formed by two adjacent inclined sides, and extend into parts of such sides, leaving other parts smooth and plain for the contact of a finger or thumb of the operator.
Patent GB-1103457-A (GB)
Title: Improvements in and relating to signal devices
Inventor: PHILLIPS ROBERT STEPHEN
IPC: G08B13/02
Filed: 1965-06-24
Abstract: 1,103,457. Switch cases. MINERVA DETECTOR CO. Ltd. 15 June, 1966 [24 June, 1965], No. 26800/65. Heading H1N. A fire-alarm switch has a resiliently biased actuating member restrained by a frangible panel 14, Fig. 2, which is retained by a cover 11 engaging only one pair of opposite edges and leaving clearances 15 on the other pair of edges. The panel 14 is engaged on the rear face by a knife edge of an anvil 17.
Patent GB-278758-A (GB)
Title: Improvements in or relating to safety switches for overhead electric cables
IPC: H02G7/18
Filed: 1927-10-10
Abstract: 278,758. T³rck, J. Oct. 8, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Mechanical cut-outs for overhead conductors x, x<1> comprise connecting members h, i by which the conductors are articulated to a rotary support c<2>, the members h, i also contacting with clips k, k<1> attached to levers l, l<1> that rest against contacts on an insulating drum m pivoted in slots in the discs forming the rotary member c<2>. The conductors enter the casing a through insulators y, y<1> mounted in slides z, z<1>, and are attached to the members h, i through a ratchet tensioning roller t, or a tensioning screw u. Ordinary movements of the conductors are permitted by the slots in which the drum m is pivoted, but if one conductor breaks the rotary member c<2> is turned by the tension of the other conductors and contact is broken. In order to isolate a section for repairs the drum m is turned by a spanner applied to the squared end of its pivot, thus breaking connection between the conductors x, xl.
Patent GB-598218-A (GB)
Title: Improvements connected with electric grillers or the like
IPC: A47J37/06
Filed: 1945-10-15
Abstract: 598,218. Cooking-apparatus. WALL'S, Ltd., and BAYLISS, J. Oct. 15, 1945, No. 26856. [Class 28 (i)] Electric grilling elements 6 are located in the upstanding outside of a box 5 to which can be attached a Dutch oven 7 which can also be stored inside the box. The oven 7 is formed with a bottom tray 11, the projecting front of which is designed to fit snugly within a recess 12 in the box. The box 5 can be used for warming plates while a shelf 8 within the box can receive a tray 9 to keep food hot. The box has a hinged side or cover 10 to contain the Dutch oven when the grill elements are then used as an electric fire. Slots formed behind the heating elements allow entry of warm air to the interior.
Patent GB-667227-A (GB)
Title: Improvements in or relating to the internal chromium plating of tubes and apparatus therefor
IPC: C25D7/04
Filed: 1949-10-19
Abstract: 667,227. Electroplating the interior of tubes. ELECTRO METALLHARDENING CO., SOC. ANON. Oct. 19, 1949 [March 18, 1949], No. 26878/49. Class 41. The interior of a tube c is electro-plated with chromium by a process in which the electrolyte enters a hollow anode e through an inlet a at one end, passes out through apertures b at the other end, flows in the reverse direction through the space between the anode and the interior of the tube c and is discharged through an outlet d. The anode consists of a hollow lead tube f surrounded by a copper tube g which is connected at each end to a source of current supply. The tube g has a lead cover h. The apertures bare provided with a protective covering of lead. The electrolyte is continuously recirculated, chromic acid being added continuously or at intervals. The plating of the tube may be freed from hydrogen by subjecting the tube to a high vacuum, followed, if necessary, by slow heating at a temperature below the annealing point of the metal.
Patent GB-268808-A (GB)
Abstract: 268,808. Lignian, G., and Tevels, G., (trading as Lignian, G., [Film. of]). April 1, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Closed solid-fuel stoves; grates; air supply for combustion.-A stove comprises in combination, a grate 3, inclined at an angle of about 45‹, and a fuel-container 4 with a hopper like bottom 6, from which the fuel is fed through an opening 7 which determines the thickness of the laver of fuel on the grate. Air is supplied through openings 21 beneath the grate, and the gases pass up a conduit 11 extending up the front of the stove and around the fuel container, there being adjustable air inlets 24, 26 at the bottom and top of this conduit for regulating the draught. The grate preferably comprises two sets of bars 32, 34, Fig. 3, attached to cross-bars or bearers 33, 35, one or other of which is reciprocated to clear the grate of ashes. At the lower end of the grate are arranged transverse bars 17 supporting the lower end of the bed of fuel, and a, dead-plate 18 which is pivoted in order to dump clinkers. Gases from the fuel in the reservoir, mixed with air from a pipe 29, pass by openings 28 into the conduit 11.
Patent GB-1146790-A (GB)
Title: Improvements relating to cooled turbine rotor blades
IPC: F01D5/18
Filed: 1967-06-12
Abstract: 1,146,790. Welding by fusion. DAIMLER BENZ A.G. 12 June, 1967 [11 June, 1966], No. 27020/67. Heading B3R. [Also in Division F1] A sheet metal covering 13 provided with holes for the passage of coolant from channels 12 in the inner blade body 10 of a turbine-rotor blade is electron-beam welded to the longitudinal ribs 11 defining the channels and the side 15 of the head 14.
Patent GB-920520-A (GB)
Title: Process for the manufacture of epoxy resins
IPC: C08G59/24
Filed: 1960-08-04
Abstract: The invention comprises a thermosetting resin comprising the reaction product of epichlorohydrin or a dihalogen hydrin and a bisphenol of the formula <FORM:0920520/IV(a)/1> in which R is an aromatic nucleus which may contain unreactive substituents and a process for the production of thermosetting synthetic resins which comprises reacting vanillyl alcohol in acid medium with at least an equimolar amount of a phenol and reacting the bisphenol thus obtained with epichlorohydrin at elevated temperature in the presence of alkali. The epoxy resins are hardened with the usual catalysts, e.g. acids, acid anhydrides, primary and secondary aliphatic and aromatic monovalent and polyfunctional amines or polyamides.  In examples vanillyl alcohol is heated with phenol or o-cresol in the presence of hydrochloric acid with removal of water and the bisphenol obtained is heated with epichlorhydrin in the presence of sodium hydroxide.  The products are mixed with phthalic anhydride and allowed to set at elevated temperature.ALSO:Bisphenols for use in the preparation of thermosetting resins (see Group IV(a)) are prepared by reacting vanillyl alcohol in acid medium with at least an equimolar amount of a phenol e.g. phenol or o-cresol.
Patent GB-624417-A (GB)
Title: Improvements in and relating to the scanning of pictures on films
IPC: H04N3/38
Filed: 1945-10-17
Abstract: 624,417. Television transmitters. GENERAL ELECTRIC CO., Ltd., and ESPLEY, D. C. Oct. 17, 1945, No. 27180. [Class 40 (iii)] In order to overcome the " keystone '' distortion which occurs when film is interlacedly scanned by a scanning disc having two sets of apertures arranged in spiral form and which causes the two interlaced frames not to register correctly, two suitable optical devices are provided, one being placed close to the scanning disc and one close to the film-gate. Light from the source 10 is directed through the film gate 12 by means of the lens system 11 and is focused in the plane of the lens 14 which projects an image of the film passing the gate on to the scanning disc 15. The film-gate accommodates two film-frames and, as a frame passes through the gate, it is scanned by the set of apertures lying between d<1> and d<2> while it is between a<1> and a<2>, and then it is scanned by the set of apertures lying between c<1> and e<2> while it is between b<1> and b<2>. However, on account of the space between successive filmframes, there is a region of the film-gate which is not scanned, and the shaded region 25 illustrates that portion of the gate and the region through which light never passes to the scanning apertures. A corresponding region 26 is shown adjacent the scanning disc 15. By using the sectors 25 and 26 to separate the regions covered by the two sets of apertures, optical devices 27 and 28 of zero power are provided to vary the effective ratio of objectdistance to image-distance for each set of apertures and thus to vary the magnification of the system for successive frames so as to render the scanning speeds for each set of apertures the same. Alternatively, optical devices comprising both dispersive and collective portions, as shown in Fig. 2, may be used, one being placed by the film-gate and another by the scanning disc, with the chain-lines lying along the optical axis of the system. The invention is also applicable to systems wherein a source of light is placed behind the scanning disc and light passing therethrough is focused upon the film passing through the gate. A shutter device will be necessary to render the two sets of apertures alternately operative and according to the Provisional Specification each spiral may occupy an arc of greater than 360 degrees. Specification 482,049 is referred to.
Patent GB-282527-A (GB)
Title: An improved method of and apparatus for operating electric arc welding systems
IPC: B23K9/10
Filed: 1926-10-30
Abstract: 282,527. Macfarlane. J. C., and Macfarlane, W. A. Oct. 30, 1926. Drawings to Specification. Supplying consuming devices.-A d.c. arc welding system, particularly for a number of welders, comprises a constant potential supply of a voltage between that required to maintain the arc and that required to strike it and a choking coil in the arc circuit for supplying the additional arc-striking voltage. The choke is preferably aircored and may of copper strip wound on edge. A resistance may be included in an arc circuit. A current limiting device with a time lag adapted to open the welding circuit may be included and this may comprise a contactor switch having an operating coil in shunt to the arc.
Patent GB-662402-A (GB)
Title: Improvements relating to loading mechanism for guns
IPC: F41A9/16
Filed: 1949-10-24
Abstract: 662,402. Loading ordnances. AKTIEBOLAGET BOFORS. Oct. 24, 1949. [March 23, 1949]. No. 27226/49. Class 92 (i). Relates to gun loading devices of the kind having a swinging tray 1 which transfers cartridges successively from a vertical hoist 5 to the ramming position shown. According to the invention a spring 29 is used to impart to the tray a force, which acts on the tray during a small part only of its loading movement but is sufficient to impart an impetus which sends the tray from its vertical position, in line with the hoist, to the ramming position. In the construction shown a pawl 6 in the hoist delivers the uppermost cartridge C' to the vertically disposed tray which is pivoted on on arms 2 about an axis coincident with the elevation axis of the gun. The round is supported in position in the tray by a spring- pressed bolt 9 and the tray is retained in the vertical position by a spring-controlled catch 16. The pawl 6 is pivoted and reciprocates vertically, and when it has reached its uppermost position a lug, not shown, movable with it is instrumental in moving the catch 16 to the unloading position. The tray is thus freed to swing under the impetus of a pivoted arm 15 to the ramming position. The arm 15 is linked to a rod 25 which, by releasable catches 26, is normally locked to a spring-urged piston 28. When the catches 16 release the tray 1 the spring 29 drives the piston downwards, and the rod 25 partakes of this movement until released from the piston by movement of the catches 26. The tray, under the resulting short movement of the arm 15 then swings to the position shown where the rammer, which includes a cylinder 52, spring 51, piston rod 53, and a catch 55 for engaging the base of the cartridge, can drive the round into the breech of the gun. The catches 26, see Fig. 7, are released bv the head of a movable rod 33 which enters a tubular extension 32 of the rod 25 and which is connected by mechanism 35 .... 43 to a segment 45 movable with the gun in elevation, where by release of the rod 25 from the piston can be controlled according to the elevation of the gun. The mechanism which retracts the pawl 6 is suitably geared to the piston 28 to compress the spring 29.
Patent GB-714557-A (GB)
Title: A method of preparing silica- and alumina- containing catalysts
IPC: B01J21/12
Filed: 1952-10-29
Abstract: A hydrocarbon conversion catalyst is prepared by mixing a silica hydrogel with an anhydrous solution of an aluminium alcoholate to hydrolyze the aluminium alcoholate, agitating the mixture and removing water from the mixture to form silica alumina gel in hard, dry form.  The silica hydrogel is prepared from a silica hydrosol made either by contacting an alkali-metal silicate with a cation exchange material or by reacting a mineral acid and sodium silicate. In the preferred form of the invention the alcoholate is prepared using a water immiscible alcohol which may be diluted with a hydrocarbon.  Specification 645,703 is referred to.