baber/WOPTO huggingface dataset:
Patent GB-427152-A (GB)
Title: Improvements in and relating to governing mechanism for elastic fluid turbines
IPC: F01D17/26
Filed: 1934-06-23
Abstract: 427,152. Steam turbines. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. June 23, 1934, No. 18609. Convention date, June 23, 1933. [Class 110 (iii)] The admission valve 3 of a turbine 1, particularly of the back-pressure type, is regulated by apparatus 76 which is responsive to an operating condition of the turbine other than its speed, e.g. the pressure or temperature in the back-pressure conduit. The mechanism comprises a duplex servo-motor system. In the form shown in the Figure, the casing 76 is connected by a pipe 78 to the exhaust conduit 2<a>, a liquid seal 79 and an adjustable orifice 80 being interposed. A bellows 77 in the casing is connected to a stem 75, movement of which is governed by an adjustable spring 83 which has a strength such that appreciable successive increases in pressure are required to compress the bellows successive steps. The stem 75 is connected to a pivoted lever 72 having an adjustable weight 74, which lever actuates, through a floating lever 70, the pilot valve 42 of a servo-motor 32. This servo-motor, acting through levers 27, 24, 21, controls the pilot valve 19 of the servo-motor 14 which regulates the admission valve 3 of the turbine. The follow-up or restoring mechanism for the pilot valve 42 comprises two casings 49, 56, hydraulically connected, and a pivoted lever 59 arranged to be rocked between adjustable springs 91, 92. The casings contain bellows 48, 57, and the spaces above and below the bellows 48 are connected by a passage 53, the restricted area of which may be varied by a screw 54. A pre-emergency speed governor 38 is connected to a pilot valve 35 of the servo-motor 32, and takes control of the governing of the turbine if the back pressure governor ceases to function.
Patent GB-294202-A (GB)
Title: Improvements in furnace wall seals
IPC: F23M5/08
Filed: 1928-06-27
Abstract: 294,202. Fuller-Lehigh Co., (Assignees of Heller, L. W.). July 20, 19'27, [Convention date]. Walls.-In order to seal the space allowed for expansion between adjoining furnace walls, particularly those embodying water tubes, blocks are provided which project across the space and are maintained in sliding contact with the furnace walls; an air-tight seal is also provided extending between the tubes of the adjoining walls. As shown in Fig. 2, the furnace walls comprise blocks 7 secured to water-tubes 6 by holding members 9, a space 16 being allowed for expansion between the two walls. The space 16 is closed by blocks 18 which are pressed against the walls at 19 and 20 by springs 21, 22. A casing 24 bolted to members 13 renders the junction of the walls airtight. Modifications of the arrangement of the springs for holding the blocks 18 against the walls and of the air-sealing plates are described and shown.
Patent GB-495558-A (GB)
Title: Improved draught preventer
IPC: E06B7/20
Filed: 1938-06-23
Abstract: 495,558. Draught-excluders. PETTY, A. G. June 23, 1938, No. 18644. [Class 20 (iii)] A sliding-bar draughtexcluder comprises an inverted -channelsection bar 1, in which is fitted a resilient sealing strip 5, and from the upper portion of which project inclined tubular members 2 slidably supported on the face of the bottom rail 9 of the door by means of screws 3 passing through slots 3a in the tubular members. Each screw 3 carries a cylindrical member 10, slidable within the associated member 2, and against the upper end of which bears a coiled compression spring 11, maintained in position by a grub screw 12 at the upper end of the tubular member 2. In the case of an inwardlyopening door, the jamb 7 is provided with a striking-plate 8, against which the end of the bar 1 bears when the door is closed, thereby lowering the bar against the force of the springs 11 while, in the case of an outwardly-opening door, the bar 1 is lowered upon closing the door by a chain connected to the end of the bar and to the door jamb.
Patent GB-187008-A (GB)
Title: Improvements in machines for photographic printing
IPC: G03B27/22
Filed: 1921-07-11
Abstract: 187,008. Morse, S. H. July 11, 1921. Printing-apparatus with continuous movement of negative and printing surface.-A duplex apparatus for printing tracings, drawings, &c. has an exposure platen formed by two sheets of glass B curved at the ends and flattened in the centre so that when brought together they form a hollow cylinder having a cross section approximating to a flattened ellipse. Printing-lamps D, preferably mercury-vapour lamps, extend between the open end of the cylinder, and are kept cool by an electric fan situated at one end. The tracings &c., together with the sensitized material, are fed in continuously at a on endless travelling bands M kept taut by counterweighted lever devices E.
Patent GB-701061-A (GB)
Title: Improvements in force-transmitting linkages suitable for automatic electric circuit breakers
IPC: H01H71/10
Filed: 1951-08-09
Abstract: 701,061. Automatic circuit-breakers. HEINEMANN ELECTRIC CO. Aug. 9, 1951 [June 26, 1951], No. 18782/51. Class 38(5) In a trip-free circuit-breaker, similar to that of Specification 684,311, and having a toggle linkage between the contact lever 2<SP>1</SP> and the operating handle 12, the latter is moved automatically to the " off " position only after the contacts are open. The toggle comprises links 9, 10 joined together at 13<SP>1</SP>, to the lever 2<SP>1</SP> at 18, and to an extension 11 of the handle at 19. The coils 23 of a spring surround the ends of pivot 19 and a portion 22 lies above the link 10, the free ends of the spring abutting the handle pivot 13. Normally the spring is unstrained, but on release of the toggle, the link 10 is moved to stress the spring, Fig. 6, which when it subsequently expands resets the toggle and moves the handle " off ", Fig. 7. The spring may be assisted or replaced by a blade spring 21a, Fig. 6, secured to link 10. The movement of the handle may operate an indicator, or the handles of several single-pole breakers may be mechanically connected so that movement of one causes opening of the remaining breakers without breaking their toggles. Specifications 642,923,. 684,327 and 684,390 also are referred to.
Patent GB-375556-A (GB)
Title: Improvements in electrical indicating circuits and instruments
IPC: G01R15/12
Filed: 1931-06-30
Abstract: 375,556. Current and pressure meters. ELFORD, E. N., Tudor Lodge, Dorney Reach, Taplow, Buckinghamshire. June 30, 1931, No. 18847. [Class 37.] A single instrument is arranged to indicate the percentage by which the current or voltage in any of a number of circuits is above or below the normal value. In the example shown, a moving coil milliammeter M has a scale with a control mark indicating the normal value, and graduations on each side of this indicating either the percentage variation from the normal or the limits of tolerance allowable. The terminals of the milliammeter are connected to the two insulated blades a, b of a 5-way switch S. In the position shown, in which the switch blades are on the contacts 1, 1<1>, the instrument M is connected across a resistance r<1>, in the anode supply circuit of the master oscillator valve V<1> of a wireless telegraph transmitter. Similarly the anode current to a radio-frequency amplifier valve V<2> is measured with the switch blades on the contacts 2, 2<1>. With the switch on contacts 3, 3<1> the filament voltage of the valve V<1> is measured, a series resistance r<3> being included in the circuit. Similarly with the switch on contacts 4, 41 the filament voltage of the valve V<2> is measured, a rectifier R being included in series with the series resistance r4, as the filament is fed with alternating current. The current in the aerial A is measured with the switch on contacts 5, 51 by means of a thermocouple X and a series resistance r<5>. The resistances r<1> . . r<5> are adjusted so that the milliammeter M gives the normal indication when the voltage or current being measured has the normal value.
Patent GB-758777-A (GB)
Title: Improvements in method of making heat insulated waterproof footware
IPC: A43B3/02
Filed: 1954-06-28
Abstract: 758,777. Top boots. UNITED STATES RUBBER CO. June 28, 1954 [Aug. 4, 1953], No. 18866/54. Class 17 (2). [Also in Group V] Heat-insulated waterproof footwear is made by assembling a heat-insulating layer 14 of pre-blown closed-cell cured cellular rubber on a rigid last 11; applying to the layer 14 a waterproof protective layer 15 of uncured rubber; heating the two layers on the last in a fluid medium to cure the layer 15; and cooling the resulting article of footwear in the said fluid medium, the layer 14 being maintained at a substantially constant volume during the heating and cooling periods (to obviate expansion and resultant displacement or rupture thereof) by balancing the pressure of said medium with the variable pressure within the cells of the layer 14 during the heating and cooling periods. As described, the two layers are assembled on the last and adhered to each other, a partly or wholly cured one-piece sole-and-heel tread 27 is secured thereto, and the whole is placed in an autoclave 28. The layer 15 may be composed of smoked sheet GR-S rubber, SRF black, calcium carbonate, talc, zinc oxide, inhibitor of static atmospheric cracking, antioxidants (diarylamine-ketone-aldehyde reaction product, condensation product of acetone and aniline and a blend of phenyl #- naphthylamine, isopropoxy diphenylamine and diphenyl - p - phenylene - diamine), retarder or antiscorch (phthalic anhydride), accelerators (benzothiazyl disulphide and tetramethylthiuram monosulphide) and sulphur. The lining 12 may be composed of creamed latex, potassium hydroxide, potassium oleate, dispersing agent (soap), antioxidants (dialkyl phenyl sulphide and reaction product of acetone and phenyl - # - naphthylamine), accelerator (mercaptobenzothiazole), zinc oxide and sulphur.
Patent GB-716750-A (GB)
Title: Improvements in and relating to internal combustion engine fuel injection pumps
IPC: F02M59/00
Filed: 1952-07-26
Abstract: 716,750. Compressed air engines; valve gear. HARPER, W. A., POUNDER, C. C., and REBBECK, Sir F. E. July 26, 1952, No. 18959/52. Classes 122(2) and 122(3) [Also in Group XXVIII] In a fuel-injection pump, the pump plunger 7 is actuated on its suction stroke by a spring 26 and on its delivery stroke by fluid pressure acting on a piston 12. At the end of its suction stroke, the plunger 7 is locked by a toggle mechanism comprising levers 15 secured on a pin 16 attached to the piston 12 and levers 18 secured to a pin 40 mounted in the casing; springs 25 load the toggle levers. A lever 39 is secured to the pin 40 and carries a pin that slides in a slot 41 in a rod 38 that actuates a second toggle mechanism 36, 43 to operate the distributing valve 32 that controls the supply of fluid pressure to, and exhaust from, the cylinder 13. To commence the delivery stroke, a rod 22 is actuated by the engine to engage the lever 21 and trip the toggle mechanism. The cylinder 13 has a port controlled by a throttle 28 to control the speed of the delivery stroke of the pump and in addition, when the piston over-runs the port, an air cushion is formed to bring the parts to rest. Specification 716,749, [Group XXVIII], is referred to.
Patent GB-687213-A (GB)
Title: Plate and like racks of the domestic kind
IPC: A47J47/16
Filed: 1950-07-29
Abstract: 687,213. Plate racks. MAJOR, R. G. July 30, 1951 [July 29, 1950], No. 18978/50. Class 28 (ii). A plate rack to accommodate different sizes of plates, saucers &c. is made of different sizes of spaced transverse loops 5 of wire preferably of inverted U-shape and welded to longitudinal side members 1 and 2 which may be united by cross pieces 2 at their ends. The side members may converge as in Fig. 3. Upper side members 3 and 4 may also be provided. The side members 1 and 2 may be formed with lugs or eyes 9 to receive holding down screws to fix the rack on a shelf in a cupboard. Some or all of the loops may reach down beyond the side members to form feet.
Patent GB-147031-A (GB)
Title: Improvements in or relating to respiratory apparatus
IPC: A62B7/06
Filed: 1920-07-06
Abstract: 147,031. Drõger, A. B. Feb. 17, 1919, [Convention date]. Respirators.-Relates to breathing apparatus of the kind in which air or oxygen is supplied by the evaporation of liquefied gas due to the passage of the surrounding atmosphere through a heating- pipe surrounding or passing through the liquidreservoir and usually controlled by an adjustable cock, and consists in causing and regulating the flow of outer air through the heater by means of the movements of inflation and deflation of the usual breathing-bag. In the form shown in Fig. 1, a reservoir a, containing liquid oxygen and an absorbent such as asbestos, is mounted in an external casing b which encloses also the breathing- bag c of the apparatus which comprises the usual breathing-tube f, valve chest e, and purifying- cartridge d. The inflation and deflation of the bag c causes the flow of air through the inlet h and around the reservoir a or through the heating- tube i. The bag c is fitted with a safety-valve p. Gas evaporated from the liquid in the reservoir a according to the depth and frequency of breathing of the user passes by a pipe g to the breathing- passages of the apparatus. In modifications, the casing b may be fitted with valved inlet and outlet openings so that gas passes through in one direction only and after becoming cooled does not remain in contact with the breathing-bag, and the purifier d may be arranged within or on the casing . so as to heat the air which is used to cause the evaporation. Fig. 2 shows a further modification in which the casings b<1>, b<2> for the liquid reservoir and the breathing bag are separate and in which air entering the casing b<2> by the valved inlet m passes through a valved opening k to the casing b<1> and thence through or round the reservoir a to an outlet pipe h.
Patent GB-438905-A (GB)
Title: Improvements in or relating to television, picture telegraphy and the like systems
IPC: H04N3/38
Filed: 1934-06-27
Abstract: 438,905. Copying kinematograph picture films; anamorphotic optical systems. BROWNE, C. O., 29, Monk's Drive, West Acton, London. June 27, 1934, No. 19044. [Classes 97 (i), 98 (i), and 98 (ii)] A kinematograph picture film suitable for use in television transmitting apparatus employing interlaced scanning has the picture detail in the longitudinal direction of the film compressed as compared with that in the transverse direction and comprises groups each consisting of a small plurality of identical frames, which may be interspersed with singly occurrent frames. As shown in the Figure, a normal negative film 11 is illuminated by a source of light 9 and a spherical-cylindrical condenser 10. The film 11 is copied by a projection system comprising cylindrical lenses 16, 18 provided with stops 15, 17 respectively on to the film 20, the films 11 and 20 moving in opposite directions. A rotating shutter 14 is provided. The cylindrical lenses 16, 18 may be replaced by plates having a fine slit. In a modification the film 11 is inclined at an angle of 30‹ to the optical axis and a spherical lens is employed. The sound track may be copied by contact printing or by non- distorting projection printing.
Patent GB-137874-A (GB)
Title: Improvements in roller & ball bearings
IPC: F16C33/46
Filed: 1917-12-24
Abstract: 137,874. Bradshaw, G. E., and A.B.C. Motors, Ltd. Dec. 24, 1917. Ball and roller bearings.-A cage for ball or roller bearings for connecting-rods &c. comprises a number of spacing-members f carried by siderings and formed with plain bearing-surfaces running on the outer or the inner ball or roller track to relieve the balls or rollers of the centrifugal load of the cage. The side rings may be made in sections and are connected together by rivets g passing through the members f. The members f, which are bevelled at j, wipe over the race and remove dirt &c. Specifications 24190/14, 104,483. 105,216, 128,232, 129,248, and 132,472 are referred to.
Patent GB-681170-A (GB)
Title: Improvements in sliding bolts
IPC: E05C1/04
Filed: 1949-07-20
Abstract: 681,170. Making sliding bolts. WALKER & WOODWARD, Ltd., and WOODWARD, D. H. E. July 18, 1950 [July 20, 1949], No. 19062/49. Class 83 (ii). In a method of constructing a sliding bolt assembly, the bolt case is formed from a length of extruded section metal providing two diverging portions 10 integrally united at one pair of edges and having a transverse portion 12 integrally united to the other edge of each, the base of the channel has an opening 13 formed therein, a bolt 15 having an integral handle 18 is inserted between the portions 10, and the said portions are then closed towards each other. The bolt may be cranked or straight and formed from extruded metal section or by hot stamping, and the bolt may carry a spring-ball catch to control its sliding movement.
Patent GB-229203-A (GB)
Title: Improvements in or relating to electrical resistances
IPC: H01C3/20
Filed: 1924-08-11
Abstract: 229,203. Youldon, C. A., and Pearce, W. H. H. Aug. 11, 1924. Wire resistances, cored and embedded. -A set of resistance conductors adapted for use as lead-in flex for modifying the voltage of ordinary domestic supply to suit different electric circuits, such as model railways, gramophone circuits &c., is arranged so that the conductors of the set are readily assembled and interchangeable, and have predetermined and different ohmic values. The conductors may be respectively proportioned, for example, to obtain a reduction of twenty-five. fifty, and one hundred volts. Each conductor preferably comprises a chrome-nickel wire d wound on an asbestos core e and coated with asbestos c. Two such conductors may be wound together like ordinary flex. Each end of each conductor is provided with a socket member A comprising an outer insulating sleeve a, which grips the asbestos covering c, and a conducting sleeve b, which is threaded and takes over the wire d and core. e. A socket may be converted into a plug by screwing in a threaded member B. The set may comprise three or four such conductors. By selecting the appropriate units of a set various voltage .reductions may be obtained. A heating unit may be formed by bridging the wires of the end conductor of a set by means of a plug containing a connecting wire.
Patent GB-154173-A (GB)
Title: Improvements relating to spinning spindles
IPC: D01H7/08
Filed: 1920-07-07
Abstract: 154,173. M³nz, F. Nov. 17. 1919, [Convention date]. Addition to 147,087. No Patent granted (Sealing fee not paid). Baths.-In a spinning-spindle as described in the parent Specification having a row of bearing balls k in the plane of the driving-pulley and the lower bearing f formed in a swinging pillar g supported laterally by springs h, the pillar g is arranged in an adjustable perforated, threaded sleeve o provided with an outer shell r which constitutes an oil reservoir. The step bearing is permanently immersed in the oil, which works up the tapering spindle to the ball bearing k, from which it returns to the reservoir along the walls. An annular cap u catches oil working above the bearing k. In a modification, the swinging support g is suspended by a ball and socket in the upper part of the sleeve o.
Patent GB-1465106-A (GB)
Title: Microwave heating apparatus
IPC: H05B6/76
Filed: 1974-05-01
Abstract: 1465106 Microwave oven AMANA REFRIGERATION Inc 1 May 1974 [2 May 1973] 19130/74 Heading H5H A microwave oven has a microwave seal structure 58 defined between the conductive wall 23 of the access opening and a conducting frame 49 secured to the door assembly 43, a peripherally extending flange 48 carried by the door assembly 43 and positioned between the frame 49 and wall 23 being provided with a plurality of alternating conductive members 69, 70 which extend to different extents in the direction of microwave energy leakage so that the choke cavity 61 will suppress microwaves of more than one frequency. The distance from a short circuiting wall surface 63 of choke cavity 61 to the origin of energy escaping through gap 60 is #/2 at the main operating frequency of the oven so that a short circuit is reflected at gap 60 and a high series reactance is provided at choke opening 62. By castellating flange 48 at 69, 70 as shown, harmonics or spurious sideband frequencies may be suppressed as well as the main frequency. This construction also obviates detuning of the choke as the result of normal wear and tear on the oven and due to slight opening of the oven door. Dielectric material 66, e.g. polystyrene or polythene fills the choke cavity 61 and the transmission path 59. Secondary radiation absorption bodies 67, 68 comprising rubber or plastics loaded with carbon derivatives or ferrites are provided between the door and access opening. The oven door has a perforated metal plate 46, 47 covered by a transparent window 52. The usual mode stirrer, timers and safety interlock switches are provided. In Fig. 6, not shown, the flange 48 has castellations of three different sizes in the direction of energy escape to suppress three frequencies of radiation. In Fig. 6A (not shown) the castellations suppress fundamental and second harmonic frequencies, the width and dimension in the direction of energy escape of the second harmonic castellations being half that of the fundamental frequency castellations. In Figs. 9 and 6B (not shown), different length castellations are separated by slots which inhibit the propagation of higher order peripheral modes, as in U.K. Specification 1,417,156 (Raytheon Co.).
Patent GB-275952-A (GB)
Title: Method of and means for facilitating the removal of a substance solidified or condensed on cooling drums
IPC: B01D1/00
Filed: 1927-07-19
Abstract: 275,952. Appareils et Evaporateurs Kestner. Aug. 10, 1926, [Convention date]. Solidifying films.-A cooling drum T on which a film of liquid or molten material from a trough N is solidified is coated, by a blowing process, with a film of impalpable powder, instead of being wetted or coated with grease, to prevent adhesion of the cooled material to the drum. The powder may be talc, carbonate of lime, sulphate of baryta or other substance chosen according to the nature of the liquid, and is blown on to the drum between the trough and the scraper C through a nozzle P<1> extending over the width of the drum. Surplus powder is withdrawn through an outer nozzle P<2> by a suction fan V<2>, which discharges into a cyclone separator S. The separated powder passes back into the feed hopper D and is delivered again to the nozzle P<1> by the pressure fan V<1>. The suction fan V<2> has a greater output than the fan V' and an air escape valve I is provided on the separator S.