baber/WOPTO huggingface dataset:
Patent GB-549834-A (GB)
Title: Improvements in thermionic amplifier circuit arrangements
IPC: H03F1/36
Filed: 1941-06-30
Abstract: 549,834. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 30, 1941, No. 8229. Convention date, June 29, 1940. [Class 40 (v)] In an amplifier having a frequency selective filter connected in a regenerative path between the input and the output an undesired current component is reduced by being applied degeneratively at a point in the regenerative connection. Fig. 1 shows an amplifier including a stabilizing feedback 25, '27 and a regenerative connection from potentiometer 33 through a phase-shifting network 35. The degenerative connection for suppressing noise in the case of a radio transmitter may include an amplifier 45 and a rectifier 43. Series filter 39, 41 and shunt filter 13 in the feedback paths provide the frequency selection while condenser 47 in the output of the rectifier prevents degenerative feedback at high frequencies. The Specification gives circuit data for removing undesired currents of 120 cycles frequency.
Patent GB-812343-A (GB)
Title: Improvements in ceramic compositions
Filed: 1956-03-16
Abstract: A dielectric ceramic composition comprises a fixed combination of lead oxide, niobium pentoxide and one or more of the group of oxides of magnesium, calcium, strontium and barium of the formula (Pb1-x.Ax)(NbO3)2 wherein x varies from 0,001 to 0,85, and A represents the group.  In preparing the compositions, the raw materials (e.g. lead sulphate, barium exalate, niobium pentoxide, strontium calcium and magnesium carbonate) are mixed in a non-solvent e.g. acetone or amyl acetate, dried, ball milled, pelleted and fired in air.  The product is pulverized and the powder dry pressed or mixed with a temporary binder, e.g. polyvinyl alcohol solution and pressed, dried and fired in air.  Fluxes, e.g. zirconia, or a flux compensator, e.g. tungsten oxide, may also be present. Specifications 724,126 and 812,344 are referred to.
Patent GB-946095-A (GB)
Title: Composition for treating finger nails
IPC: A61K8/41
Filed: 1962-03-05
Abstract: A fingernail base composition comprises stearyl trimethylammonium chloride (3 parts by weight) polyoxyethene ether from 1 mole of nonyl phenol and 10 moles of ethylene oxide (1.5 parts), trihydroxy ethylamine stearate (0.5 parts) and water (95 parts).
Patent GB-1520686-A (GB)
Title: Process for electrolytically colouring aluminum and aluminum alloys
IPC: C25D11/22
Filed: 1976-03-03
Abstract: 1520686 Electrolytically colouring anodized Al YOSHIDA KOGYO K K 3 March 1976 [6 March 1975] 08403/76 Heading C7B Anodized Al or alloy is coloured electrolytically using A.C. which is lowered in voltage at least once during colouration. The preferred bath either contains 0À5-500 g/l of two metallic salts and 0À05 -10 g/l of a reducing agent selected from dithionites, thiosulphates, sulphurous acid and its salts, hydrogen sulphites and thioglycollic acid and its salts or 0À5-500 g/l of at least three metallic salts. Inorganic and organic salts of Ni, Co, Cr, Cu, Mg, Fe, Cd, Ti, Mn, Mo, Ca, V, Sn, Pb and Zn are specified. An inorganic or organic acid or ammonium, amino or imino salt thereof (5-250 g/l) may be added. Other additions listed are toluenesulphonic acid, sulphosalicylic acid, hydrazine sulphate and maleic acid anhydride. A.C. of 6-50V is used, which is dropped by 1-10V within 2 minutes. Usual preanodizing, anodizing, sealing and final resin coatings (dip or electrophoretic) may be used.
Patent GB-127385-A (GB)
Title: Methods of Mounting Lenses.
Inventor: BECK CONRAD
IPC: G02B7/02
Filed: 1918-05-24
Abstract: 127,385. Beck, C., and Beck, H. C. May 24, 1918. Optical apparatus. - Lenses are mounted in optical instruments by means of cells which are inserted into a tube through apertures formed by cutting away the tube. Fig. 1 shows a tube a cut away at b and split co form a tongue c which is provided with an aperture d. An aperture corresponding to the aperture d is formed on the other side of the tube. The cell e containing a, lens f has projections which fit into the apertures, and the apertures and projections may be of different sizes or shapes on the opposite sides, so that the cell can be put into the tube in one position only. An outer tube may be placed over the tube a after the cell is inserted, to prevent displacement of the cell. Fig. 3 shows a tube g having apertures k, k<1> which permit the insertion of lenses l, l<1> carried in cells, and the cleaning of the lenses while they are in place. The cells may be secured by screws, and a cover-tube or separate cover.s may be provided to close the apertures. Reference has been directed by the Comptroller to Specification 105,247.
Patent GB-704985-A (GB)
Title: Improved spring suspension for motor cycle wheels and the like
IPC: B62K25/08
Filed: 1951-04-13
Abstract: 704,985. Spring suspensions for motor-cycles. INNOCENTI SOC. GENERALE PER L'INDUSTRIA METALLURGICA E. MECCANICA. April 13, 1951 [April 14, 1950]. No. 8692/51. Class 136(3) A motor cycle suspension system which is separately mounted above the wheel fork 1 and in front of the steering column 6, comprises an inner bushing 2 connected to the wheel fork and an outer guide member 3 connected to the steering column and mounted on the bushing 2 for axial movement, a spring 7 housed in and interconnected between the members 2, 3 and linkage members 10, 11 pivotally connected to the guide member 3 and wheel fork 1 and interconnected about an axial pin 14 by a frictional shock absorber. The shock absorber comprises two sets of friction discs 15, 15<SP>1</SP>, an elastic washer 16 and a central friction disc 17. Each set of discs 15, 15<SP>1</SP> and washer 16 is connected to a link 10. The friction discs 17 are fixed to the links 11 by a locking member 18. The springs 3 rest on a ball bearing 9 so that the torque action of the spring during compression is not transferred to the links 10, 1].
Patent GB-1058043-A (GB)
Title: Dual circuit control valve
IPC: B60T15/04
Filed: 1965-03-01
Abstract: 1,058,043. Fluid-pressure brakes. BENDIXWESTINGHOUSE AUTOMOTIVE AIR BRAKE CO. March 1, 1965 [March 13, 1964], No. 8710/65. Headings F2F and F2V. A dual-circuit brake valve of the kind in which a manual valve actuating member 64 opens a normally-closed first valve member 28 which connects an inlet port 11, supplied by source 15, to an outlet port 12 and is engageable with a second valve actuating member 48 to open a second valve member 102 to connect a second inlet port 13, supplied by an independent source 16, to a second outlet port 14, and in which a relay piston responsive to pressure rise at the outlet 12 by way of passage 98, is also adapted to operate the member 48 so long as pressure is maintained at the source 15, the relay piston comprises a large diameter floating piston 86 having a bore in which slides a smaller diameter piston 88 which is secured to the member 48 and is urged by a spring 94 gainst a shoulder 96 so long as the supply from source 15 is maintained. In failure of this supply the member 64 can move the member 48 and piston 88 independently of piston 86, so that the pressure built up at outlet 14 acts only on piston 88, thus preventing excessively high pedal pressure being required to operate the secondary circuit in the event of failure of the primary circuit. The valve members are of the lapping type in which each outlet is connectible either with the respective inlet or with an exhaust passage 50 in the member 48 communicating via a passage through valve member 102 with exhaust outlet chamber 112. Piston 86 has two O ring seals 104, 106, a space 108 between the seals being at all times connected to atmosphere via opening 110, or to the exhaust chamber by a connection 116 where maximum dirt occlusion is required. The manual valve actuating member 64 comprises a recessed portion to receive the upper end of member 48, and a reaction piston which is recessed to receive a rubber graduating spring 74 associated with pedal-operated plate 66. A bearing member 34 of T section having seals 38 is provided in the valve casing to guide the assembly of member 48 and a surrounding sleeve 32 carrying the valve member 28.
Patent GB-523394-A (GB)
Title: Improvements relating to position indicators for electric motor starting switchgear
IPC: H01H9/16
Filed: 1938-12-01
Abstract: 523,394. Actuating controllers. BROOKHIRST SWITCHGEAR, Ltd., and LANCELEY, C. Dec. 1, 1938, No. 8739/40. Divided out of 52:2,048. Drawings to Specification. [Class 38 (iii)] With auxiliary switches.-The Specification comprises subject matter described in Specification 522,048, but the claims of the present Specification relate especially to the operation of the indicator of the controller by the auxiliary stop switch. Specifications 363,046 and 523,393 also are referred to.
Patent GB-526601-A (GB)
Title: Improvements in primary cells
IPC: H01M12/06
Filed: 1939-03-20
Abstract: 526,601. Batteries. GORDON, C..T. March 20, 1939, No. 8749. [Class 53] In an air-depolarized cell in which the positive and negative ele ments are separated by fibrous material serving as a carrier for the electrolyte, the positive elements are in the form of perforated plates corrugated or ribbed tc provide ducts by which air can pass through the perforations to permeate the fibrous material. The negative elements are magnesium rods 2 connected in parallel by wire 3. The positive elements are corrugated plates of carbon 4 perforated at 5, adjacent plates being arranged back to back so as to form vertical air ducts open at the top to the air space 7. The fibrous material 8 extends into the air space 7. The carbon plates are connected electrically by a band of copper gauze. Cardboard tubes 16 permit water to be added ; the electrolyte comprising potassium bromide should not cover the lowest perforations 5. The casing 1 may be of compressed paper impregnated with cement, wax, or resinous material.. Specifications 423,301, 423,353, 423,738, 437,821, 441,894 and 443,983 are referred to.
Patent GB-230650-A (GB)
Title: Improvements in bearings for the spindles of flyer spinning, doubling, twisting and like machines
IPC: D01H7/04
Filed: 1924-04-08
Abstract: 230,650. Stell, A., and Stell, J. April 8, 1924. Channels and reservoirs in vertical shaft bearings.-A bearing sleeve 3 for the upper end of the spindle 2 of a spinning, doubling, twisting or like machine, which depends into a hollow wharl 5 fixed on the spindle above the flyer 6, is formed with an upper lubricant recess 3<a> and longitudinal ducts 3b through which lubricant drawn up through the bearing returns to the wharl, and the latter is formed with annular recesses 5<a>, 5<b> of which the upper walls are inclined downwards towards the spindle, so as to retain the lubricant in the wharle. A nut 7 on the upper end of the spindle bears on balls mounted in the recess 3<a>.
Patent GB-414173-A (GB)
Title: Improvements in straight-bar knitting machines
IPC: D04B11/22
Filed: 1933-03-24
Abstract: 414,173. Knitting-machines. BLACKBURN & SONS, Ltd., G., Atlas Works, Kirkewhite Street, HOLLIS, C. W., 371, Blue Bell Hill Road, both in Nottingham, and START, F., 136, Gordon Road, West Bridgford, Nottinghamshire. March 24, 1933. No. 8896. [Class 74 (ii).] For adjusting the loop-transferring points in the " Cotton " type of machine to enable clocks &c., to be more readily produced, the free stepped ends C of a number of displacement arms are raised simultaneously by a lever N which also carries a roller N<5> for acting on a slide A connected to and positioning the points. The arms are pivoted at B to the slide and when out of action rest on a stop E. Studs D<1> on a pattern chain may support the arms in any one of six working positions and an accompanying lever S in one of two positions. The studs act for this purpose on parallelmotion links H, C<1> pivoted at H<1> and connected to the arms and levers. When the lever N moves away, one of the steps C abuts on a plate K, eccentrically mounted at J and stepped to obtain an extended selection. The pivot J is rocked for transfer purposes by links &c., J<1>-J<3>, L, from cams M<1>, M<2>, which thus shog the points. To reverse the movement a cam follower J<7> is moved from one cam to the other under control of the lever S. The pattern chain D is advanced each time the slide A moves to the left. When the cam shaft M is shogged the device is put out of action, and the various cam followers are supported by circular discs V, V<1>, V<2>.
Patent GB-184771-A (GB)
Title: Improved method of making cages for bearings
IPC: B21D53/12
Filed: 1922-03-28
Abstract: 184,771. Timken Roller Bearing Co., (Assignees of Buckwalter, T. V.). Aug. 15, 1921, [Convention date]. Roller bearings.- A cage for the conical rollers 4 of a bearing consists of rings 5, 5<a> connected by integral bridge-pieces 3, each having concave faces 3<a>, a protruding inside edge 3<b>, and an expanded outer face 3<c> formed by flowing the metal. The cage is pressed from a hollow cylinder or from a flat disc of metal. To facilitate assembly the bridge-pieces 3 are bent outwards as shown in Fig. 6, and when the bearing-cone 6, which has ribs 6<a>, 6b engaging the conical ends 4a, 4b of the rollers 4, is in position, the bridge-pieces 3 are bent inwards.
Patent GB-155735-A (GB)
Title: Improvements in and relating to roller bearings
IPC: F16C19/34
Filed: 1920-03-26
Abstract: 155,735. Wingquist, S. G., Palmgren, N. A., and Aktiebolaget Svenska Kullagerfabriken. March 26, 1920. Roller bearings.-In a roller bearing having one or more rows of conical rollers, each roller has a spherical surface engaging a flange on one of the race rings to take end thrust of the roller and to prevent deviation from the normal position. The surface of the flange may be spherical, in which case the contact with the roller is superficial, or it may be conical in which case the contact is linear. The spherical surface 5, Fig. 2, is formed on a collar 9 of the roller and engages a spherical surface 6. Figs. 8 and 9 show forms in which the spherical surfaces are at the larger ends of the rollers. In a modification, the rollers are barrelshaped and run in a spherical outer race. Specification 133,949 is referred to.
Patent GB-577687-A (GB)
Title: Improvements in or relating to output governing means for motor driven vehicles
IPC: H02P9/02
Filed: 1944-05-10
Abstract: 577,687. Speed governors. GANZ, H. May 10, 1944, No. 8945. [Class 135] A speed governor particularly adapted for use on vehicles driven by internal-combustion engines with electrical power transmission and including a fluid-pressure servomotor in which the fluid pressure acting on the power device also acts on an adjusting piston adapted to reset the control valve to neutral, has the conduits connecting the control valve with the adjusting piston fitted with throttles. In the arrangement shown in the Figure, a resistance 19 in the excitation circuit of a generator in the electrical transmission is varied by a switch arm 18 actuated by a double-acting piston 17 under the control of a valve 15. This valve is actuated by a centrifugal governor 3 driven by the engine 1 and coupled by a lever 5, link 6, lever 7, fitted with an indicating pointer 8, lever 10, with a movable fulcrum 11 adjustable by means of a hand lever 28 and floating lever 13, with the valve. The end 14 of the floating lever is coupled to a piston 21 loaded to its central position by a spring 23 arranged between abutment plates 25, 26 and movable in a cylinder connected by pipes fitted with throttles 37, 38 with the pipes connecting the control valve with the power cylinder. To render the action of the piston different in the two directions of movement, the piston may have differential surfaces or may be loaded by two springs with different characteristics. The arm 18 may be arranged to adjust the feed regulator or the throttling valve of a hydrodynamic coupling or the position of the blades of a hydrodynamic transformer.
Patent GB-287852-A (GB)
Title: Improvements in or relating to paravanes for submarines
IPC: B63B21/66
Filed: 1928-03-24
Abstract: 287,852. Ginocchio, M. March 26, 1927, [Convention date]. Mines, marine.-Relates to submarine mines 7 of the kind provided with tail fins 13 and depth-controlling vanes i, and adapted to be towed from a submarine as a weapon against another submarine. According to the invention, the mine is provided with a' sensitive firing- hammer device, in conjunction with a dashpot safety device and an electric firing circuit, and a flooding valve is provided under control of the towing cable. As shown, the release of the mine from a submarine liberates a spring plunger v, which lifts a member x by means of a lever w, and releases a dashpot n by means of a lever u. The member x frees a pendulum z pivoted at 4, so that, on the slightest impact, the pendulum z falls over and a weight 5 mounted on balls 9 strikes and breaks a tube 2 containing a bichromate solution which falls into and energizes a battery 8, thereby firing the mine. This firing, however, cannot occur unless the primer is armed, and this arming is performed by the dashpot n at the end of its stroke, when a shutter 11 swings out and closes a switch 10, and the primer p moves close to the detonator m, in readiness for firing when the battery 8 is energized. Premature energization of the battery is ineffective and spends itself after a short time. The towing cable is attached to a lever a connected to a spring-loaded valve b which floods the mine when the towing tension is suddenly slackened. The vanes i are braced together by a lattice frame, and the lower vane is made larger than the upper one to lower the centre of gravity.
Patent GB-199809-A (GB)
Title: Improvements in machines for scutching flax-stems and analogous fibrous materials
IPC: D01B1/28
Filed: 1922-03-29
Abstract: 199,809. Marshall, H. J., and Marshall, Sons, & Co., Ltd. March 29, 1922. Scutching-apparatus; grip-chain and like arrangements for feeding, holding, and conveying fibrous materials.-In a machine for scutching flax and like fibrous material and of the type having endless conveyers D, E of different lengths, the axes of the pulleys A, B, C are placed in the same horizontal plane as the axis of the scutcher I, and a receptacle K is placed between the pulleys A, B to receive the material which has been acted upon. The raw material is introduced in the space below the receptacle K and is carried past a fixed stock H, the face of which is flush with the disc of the pulley C and is recessed to correspond approximately thereto. The stems are scutched on each side of one end as they enter and leave the stock respectively; they are then removed from the receptacle K, reversed end for end, and re-entered in the conveyer.
Patent GB-582413-A (GB)
Title: Improvements in electrical protective apparatus
IPC: H02H3/40
Filed: 1942-07-01
Abstract: 582,413. Protective cut-out arrangements. GENERAL ELECTRIC CO., Ltd., CROFT, E. H., and RANDALL, H. July 1, 1942, No. 9086. [Class 38 (v)] [Also in Group XXXVI] An electrica warning or protective device for a loading resistor employed in a non- regenerative D. C traction system comprises voltage and current coils 3, 4 having armatures 6, 7 respectively mounted on the ends of a beam 8 centrally pivoted on a post 9. A spring 11 biasses the armature 6 to the normal position shown in which the pull of each coil is substantially the same. If the current falls below a predetermined value due to the resistor attaining too high a temperature, the pull of the voltage coil 3 predominates and attracts the armature 6 to open or close contacts 12 of a warning or protective circuit. In the event of a high surge voltage occurring, the operation of the device may be prevented by incorporating a time delay mechanism in the current coil, Figs. 5 and 6 (not shown). Curves of performance are also given in Figs. 3 and 4 (not shown).
Patent GB-908040-A (GB)
Title: An improved centrifuge
IPC: B04B3/00
Filed: 1960-03-15
Abstract: 908,040. Centrifugal strainer separators. BAJIN, Z. March 15, 1960, No. 9161/60. Class 46. In a continuously operable sugar centrifuge, for separating sugar from massecuite, a frustoconically shaped rotary unit, comprises an inner drum 5 and an outer drum 3 and is supported by two separate double bearings disposed one at each end of the unit, the bottom hollow journal 18 being stationary and being the one about which the two drums, mounted on the double axial and radial bearing 17, rotate, the auxiliary bearing 19 giving additional vertical support to the unit. The inner drum 5 is driven directly by the electric motor 1 through the solid driving journal 20 whereas the outer drum 3 is driven through the main cover 23 by the hollow driving journal 21 driven in turn by the electric motor 1 through the infinitely variable transmission 22. Massecuite introduced at 2 enters the annular space between the drums 3 and 5 and is thrown against the permeable lining 4 of the drum 3 which with the drum 5 has liquid holes and slits distributed over its surface, green syrup being collected in the top compartment. Conveying knives 6 and screw 7 controls the descent of the mixture to the section where it is exposed to atomised hot water from pipe 12, under increased centrifugal force, "white syrup I " passing into the next compartment. The sugar and residue which pass down to the third sections are exposed to dry steam from pipe 13 and under the high radial accelerations the residue passes into the third compartment as "white syrup II", the three syrup fractions being taken off through pipes 8, 9 and 10 respectively. The sugar in the jacket 15 is discharged through holes 11 with outlet cover 24 and the periphery of the outer drum 3 and is discharged, under gravity, through the hopper 16. Pipes 12 and 13 and a drip catcher pipe 14 pass into the interior of the centrifuge by way of the hollow journal 18. A modification is described, wherein the drums 3 and 5 are inverted.
Patent GB-146620-A (GB)
Title: Improvements in hot-air engines
IPC: F02G1/057
Filed: 1919-04-11
Abstract: 146,620. Rees, T. A. April 11, 1919. Hot-air engines. - The displacer piston H is connected to the connecting-rod A of the engine piston E by means of a link B, a lever C fulcrumed on the piston, and rods F. G. During the down-stroke, the air in the space I passes through channels K, L, valve M, and heating pipes N into the space O. During the up-stroke the air passes through ports P, channels Q. and cooling-pipes R into the space I. The engine is started by lowering a roller T on to the shaped edge of the fly-wheel U so as to open a valve V and admit compressed air through a pipe X. It is stopped by releasing the air into a storage tank and atmosphere.
Patent GB-870653-A (GB)
Title: Improvements in or relating to the dispersion of cloud or fog
Inventor: STONE ROGER THAYER
IPC: A01G15/00
Filed: 1959-03-17
Abstract: A method of dispersing atmospheric cloud or fog by causing the formation of water droplets therein, comprises introducing methyl or ethyl alcohol into the cloud or fog as vapour, or in finely divided liquid form.  To effect fog dispersal, the alcohol may be discharged into the fog from an atomizer (see Group XXVIII) containing a solution of methyl or ethyl alcohol in a propellant such as liquid carbon dioxide, and mounted on a moving vehicle. Alternatively, a heater may be used for evaporating the alcohol, the vapour of which then rises through the fog.  In the case of cloud dispersal, the alcohol may be discharged into the cloud from an aircraft, fixed balloon or kite, or by means of a specially adapted bullet (see Group XXI) which is fired into the cloud.