baber/WOPTO huggingface dataset:
Patent GB-434376-A (GB)
Title: Improvements in the photographic recording of sound impulses
IPC: G11B7/00
Filed: 1934-05-11
Abstract: 434,376. Optical sound recording apparatus. RADIO CORPORATION OF AMERICA, 30, Rockfeller Plaza, New York, U.S.A. May 11, 1934, No. 14329. Convention date, June 8, 1933. [Class 40 (ii)] In the photographic recording of sound, a light beam is moved in one direction in accordance with the impulses to be recorded and in a different direction in accordance with the envelope of these impulses. The records may be made by projecting on to a film 19, light emitted from a lamp 10 through a condenser 11, a mask 12 and lens 13, and reflected by an horizontally oscillating mirror 14 through a lens 15, slit 16 and optical system 17, 18. The mask 12 is vertically oscillated in response to the amplitude of the sounds to minimize ground noise, two records such as A, B, Fig. 4, being made. The records are reproduced by the apparatus described in Specification 406,872.
Patent GB-560770-A (GB)
Title: Improvement in catalytic process for making ethylene oxide
IPC: C07D301/10
Filed: 1942-10-14
Abstract: In the production of ethylene oxide from ethylene and oxygen with a silver catalyst, in the absence of an inhibitor, there is incorporated in the silver catalyst a small proportion of calcium peroxide prepared by adding sodium hydroxide to a solution of calcium chloride, suspending the washed precipitate in water and adding hydrogen peroxide.  A carrier material such as sandstone may be mixed with silver or a silver compound such as silver oxide and the calcium peroxide, a liquid which may contain an adhesive agent being added and the liquid is allowed to evaporate so that the carrier is coated with the catalyst.  The gas mixture containing ethylene and oxygen may be passed through active carbon to remove catalyst poison before reaching the catalyst.  An analysis is given of the commercial calcium chloride used in the production of the calcium peroxide.
Patent GB-104474-A (GB)
Title: Improvements in Machinery for use in the Manufacture of Conical Tubes of Paper or the like.
IPC: B31C7/02
Filed: 1916-10-10
Abstract: 104,474. Mono Service Vessels, Ltd., (Taylor, E. Z.). Oct. 10, 1916. Pile supports for sheet feeds.- In a machine for making conical tubes of paper or like material, the cut blanks are delivered to the conical mandrels through a slot in a non-rotating pan by means of rotating pushers which push the blanks round the pan. The rotating pushers 9, Fig. 1, are attached to a spindle 7 driven from the main shaft 1, Fig. 3, through bevel-gearing 3, 5, and push the blanks over the slots 16, Fig. 2, formed in the non- rotating pan 10, which is keyed to a fixed central column 8 and given a vertical reciprocating movement by the engagement of pins 14 on the spindle 7 with a cam 15 on the pan-holder 11. When the pan is at its lowermost position each slot 16 is opposite a mandrel 17, which withdraws the bottom blank by suction, the upper surface of the mandrel moving in the same direction as the blanks. The airsuction to the mandrels is controlled bv a valve 56 mounted on a cam-actuated rod 58. Specification 6502/09 is referred to.
Patent GB-654923-A (GB)
Title: Improved multivibrators
IPC: H04N5/06
Filed: 1946-05-13
Abstract: 654,923. Pulse frequency-dividing circuit. BRITISH THOMSON-HOUSTON CO., Ltd., and OWEN, C. E. May 13, 1946, No. 14409. [Class 40 (vi)] In a frequency divider comprising at least two multivibrator stages connected in series, synchronizing pulses are injected into both cathodes of each dividing circuit thus triggering both change-over points of the multivibrators and enabling them to operate in a substantially symmetrical condition with corresponding improvement in frequency stability. The double triode valves V1 and V3 are connected as normal multivibrator frequency dividers, negative synchronizing pulses at the input being differentiated and applied to the cathodes of V1a and V1b the positive excursions of the pulses being suppressed by diodes V2. When valve V1a is just cut-off the grid voltage of V1a rises, Fig. 2 (not shown), at a rate depending on C and R so that when the multivibrator is dividing by nine the fifth negative pulse occuring on the cathode causes the valve to conduct, the multivibrator changes over and a similar action occurs with valve V1b. If the second multivibrator is dividing by an odd number, synchronizing pulses are taken as shown from each anode of V1a and V1b and applied to the cathode circuits of V3a and V3b respectively, the potentials at the electrodes of valve V3 varying as in Fig. 3 (not shown). If the last multivibrator is to divide by an even number the synchronizing pulses for the two cathode circuits are derived from one of the anode circuits of valve V1.
Patent GB-167344-A (GB)
Title: Hat and like hooks
IPC: A47C7/64
Filed: 1920-05-27
Abstract: 167,344. McShane, A. May 27, 1920. Hooks fixed to flat surfaces. -A hook for hats &c. is fixed to the front portion of the underside of tip-up seats and comprises a slotted pattress in which the hook is pivoted at one end, and swings freely. When the seat is up, the hook swings into the slot as shown at 1, and when down swings out as shown at 8. The pattress is screwed to the underside of the seat. A stop is provided to prevent the hook from swing- ing out of sight.
Patent GB-168379-A (GB)
Title: Edge grinding machine for lenses
IPC: B24B9/14
Filed: 1920-05-27
Abstract: 168,379. Long, E. M., and Standard Optical Co. May 27, 1920. Disc apparatus.-A machine for grinding the edges of elliptical lenses comprises means by which the lens is rotated in contact with a grindstone at such a varying angular velocity that all parts of its periphery shall be completed at practically the same time. A grindstone 10, Fig. 4, supplied with water from a reservoir 5, is mounted on a shaft 11 supported in a frame 1 provided with an inclined guideway 7, on which is bolted a movable section 8. A sliding carriage 16 is reciprocated on guides on the top of the section 8 by means of a piston in a cylinder supplied with fluid from a pendant pump, as described in Specification 151,303. A lens-holder frame 62, pivotally mounted on arms 60 on the carriage 16, is urged towards the grindstone 10 by weighted levers or springs. A shaft 65 journaled in an extension 64 of the frame 62 is driven from a shaft 43 through a flexible shaft 68 and spiral gears 69, 70. The upper end of the shaft 68 is journaled in a yoke 72 pivoted on an eccentric rock-shaft 73 carried by arms 74, Fig. 5, on the extension 64. A handle 75 serves to rotate the eccentric shaft 73 and throw the gears 69, 70 out of mesh. A disc 83, Fig. 6, on the shaft 65 drives at a varying speed a disc 84 on a parallel shaft 82; a link 85 connects the discs 83, 84. Lens-clamping members 77, 78, provided with pads, rotate with spindles 79, 80, which are driven by 2 : 1 reduction gears from the shaft 82. A hand-lever 102, Fig. 8, partially rotates a rock-shaft 97 having cam-surfaces 99, which engage pins 100 on a rock-arm 93 pivoted on a spindle 94. The pins 100 act radially on the shaft 97 and so lock the latter in any position. The end of the arm 93 engages a grooved collar 91, thrust ball bearings 86<1>, and springs 92, a longitudinal movement to the shaft 80 thus clamping a lens between the members 77, 78. A lens pattern 89 on the member 77 bears against an adjustable back-rest 111, Fig. 1, and causes the frame 62 to swing towards and from the grindstone and thus grind a lens, between the members 77, 78, to the required shape. The grindstone is kept true by an adjustable device 114.
Patent GB-985295-A (GB)
Title: Hollow artificial filaments and spinnerets for their production
IPC: D01D5/24
Filed: 1961-04-21
Abstract: 985,295. Spinnerets for hollow artificial filaments. CELANESE CORPORATION OF AMERICA. April 21, 1961 [April 22, 1960], No. 14464/61. Drawings to Specification. Heading B5B. A spinneret for use in making hollow artificial filaments whereof the cross-section is roughly the shape of a hollow square open at one corner or side contains one or more spinning orifices whereof the cross-section in a plane transverse to the orifice axis is generally the shape of a pentagon of which one side is curved or V-shaped so as to project into the pentagon a distance, measured from a line bridging the curve or V to the point of maximum penetration into the pentagon, which is at least 6% of the diameter of the smallest circle which will circumscribe it. The orifice cross-section may be delineated by five sides whereof a convex side faces the angle of intersection of two substantially rectilinear sides, this angle being less than 180 degrees, and the remaining two sides may be concave in form. The angle of intersection may be between 80 and 150 degrees. The junctions of the sides of the orifice cross-section in this case may all fall on the circumference of a circle of which the concave sides form parts and the radius of curvature of the convex side is between 40 and 200% of the radius of this circle. The area of the cross-section of each orifice may be between 0À006 and 0À02 square millimetres. The junctions of the sides of such an orifice crosssection may fall at the points of a regular pentagon and on the circumference of a circle of 0À08 to 0À22 mm. diameter, a chord across the convex or V-shaped side may be about 59% of said diameter and said side may project into the orifice cross-section about 9% of said diameter. The spinneret may be used for dryspinning a solution of secondary cellulose acetate in acetone and the extruded filaments may be taken up at a draw-down ratio between 0À6 and 2À0. Specification 926,717 is referred to.
Patent GB-391986-A (GB)
Title: Improvements in and relating to measuring methods for widths of fabric or the like
IPC: G01N27/60
Filed: 1932-05-23
Abstract: 391,986. Electrostatic meters. DIRKS, R., 141, Garnisonstrasse, Chemnitz, Germany. May 23, 1932, No. 14574. [Class 37.] The moisture - content, and the pressure exerted by rollers, for a given width of material in drying machines, calenders, raising and warping machines wherein an electrostatic charge is imparted to the material by friction during its passage through the machine, are determined by an electroscope or recording electrometer. The duration of a working operation of the machine can also be determined. As shown, electroscopes 1 are located adjacent the fabric 6 leaving a drying drum 5 and also near the fabric before it is led to the drum 5. Earth connections to the casings of the electroscopes are made at 7.
Patent GB-470324-A (GB)
Title: Improvements in and relating to insulated fishplates
IPC: E01B11/02
Filed: 1936-02-11
Abstract: 470,324. Railway rail joints. WILLIAMS, L. WYNN-. Feb. 11, 1836, No. 14585/37. Divided out of 470,262. [Class 104 (ii)] [Also in Group XXII] In an insulated fishplate joint comprising fishplates, formed in separate halves each bolted to one of the rail ends and provided with a laterally extending portion secured by bolts through an insulating layer to a corresponding portion of the other half, each of the halves is formed by fashioning a length of steel angle bar to shape, or by welding the laterally extending portion to the railengaging portion, or by a pressing operation on a piece of angle bar. The angle bar 1, 2 may be shaped by making a cut along a line AB parallel to and slightly displaced from the angle, and then a second cut along CB to meet the first cut, thus removing part of the flange 2. Alternatively, the blank may be fashioned by milling or by the oxyacetylene flame, or by a combination of sawing, milling and the flame.
Patent GB-1496473-A (GB)
Title: Electrophotographic copier
IPC: G03G21/14
Filed: 1976-04-09
Abstract: 1496473 Copying machine INTERNATIONAL BUSINESS MACHINES CORP 9 April 1976 [27 May 1975] 14642/76 Heading G2H In an electro-photographic copier of the two cycle kind in which an image developed on a photo-conductor 12 is transferred to a substrate, a single corona discharge device 18 acts alternately as a transfer and a pre-charge device and a further single corona discharge device 22 acts alternately as a pre-clean and a final charge device, the charge deposited on the photo-conductor 12 by the device 22 being controlled such that, in an imaging operation, it reduces a pre-charge formed on the photoconductor by the device 18 to a level suitable for exposure to form a latent image, and, in a cleaning operation, it reduces charges remaining on the photo-conductor after a transfer operation at the device 18 location to substantially zero. Device 18 comprises a corotron, whereas device 22 comprises a scorotron the control grid 24 of which is switched to one of two controlled voltage sources according to which of its two alternative functions is required in the particular cycle in which it is operating.
Patent GB-219770-A (GB)
Title: Improvements in or relating to gear cutting machines
IPC: B23F5/14
Filed: 1923-06-05
Abstract: 219,770. Jury, F. W. June 5, 1923. Gear-cutting. - In a gear-cutting machine, particularly for cutting double-helical gears without a centre gap, two cutters of rack form are alternately reciprocated to the centre of the peripheral face of the blank which is rotated through half a pitch during the cutting stroke and a further halfpitch during the return stroke of each cutter so as to impart the indexing movement to the blank. The cutters are fed radially into the blank until the required tooth depth is attained, whereupon the cutter and blank are rolled together to finish the generation of the teeth. The bed 1 carries a housing 2 provided with an electric motor 3 which drives a shaft carrying a crank disc whose pin engages a slot in a rack plate 6. The latter operates pinions 9<1> on shafts 10 connected through ratchet devices 11 to loose wheels 10<1> engaging a wheel 12, Fig. 7, the arrangement being such that the reversing rotations of the shafts 10 produce intermittent motion in one direction in the wheel 12, this motion being transmitted through the shafts 13, 15, differential gear 17, spur gearing 18, and worm gearing 19<1> to the blank-spindle 21. The rack cutters 34 are mounted in holders 38 pivoted to blocks secured to cross-heads 40 which reciprocate in angularly-adjustable guides 41 and are provided with pins engaging grooves in the rackplate 6, so that the tools are reciprocated alternately to the centre plane of the blank. The cutters are withdrawn on their idle stroke by means of gate cams, Fig. 9, engaged by pins 45 on the cutter-holders. The blocks 39 are adjustable on the cross-heads 40 so that the cutters may be arranged to swing horizontally away from the work. During the roughing operation the cutters are fed radially into the work by means of a ratchet-bar 35 connected to the housing 2 and operated at each revolution of the blank by a projection 37 on the blank-spindle 21. In a modification the projection 37 may be replaced by an eccentric to give a continuous depth feed. When the desired tooth depth is attained the radial feed pawl is disengaged by a tappet 35<1> and a tappet rod 34<1> on the cutter housing trips a catch on the bed 1 whereupon a cam 33 on the blank-operating shaft 19 operates through the link mechanism shown in Fig. 3 to impart intermittent motion to a wheel 17<1> on a jackshaft 28. This shaft is connected by a shaft 26 and bevel-gearing to a screw 25<1> which is thus actuated to give a tangential generating movement to the cutters to finish the teeth. At the same time the required rotation is superposed on the blank motion to give correct rolling by means of the wheel 17 of the differential gear.
Patent GB-253905-A (GB)
Title: Improvements relating to the feeding of pulverised fuel to a combustion chamber
IPC: F23C99/00
Filed: 1926-06-14
Abstract: 253,905. Wood, W. R. June 16, 1925, [Convention date]. Fuel, feeding.-Pulverized fuel is fed into a furnace by two oppositely-rotating plain cylindrical drums 18, 19 spaced sufficiently apart to permit the passage of fuel. The fuel is fed to the drums by a bunker 13, hopper 14 and rotary feeder 16 and enters the furnace after passing between the drums through a nozzle 17. Independent motors are employed for driving the feeder and drums, such motors being preferably of the variable-speed type. Specification 253,903 is referred to.
Patent GB-699271-A (GB)
Title: Improvements in electric storage batteries
Inventor: HIGNETT HAROLD WILLIAM GEORGE
IPC: H01M10/30
Filed: 1951-06-22
Abstract: 699,271. Batteries. MOND NICKEL CO., Ltd. June 11, 1952 [June 22, 1951], No. 14921/51. Class 53. An accumulator having an alkaline electrolyte 4 and an electrode 6 of finely-divided iron is provided with an auxiliary zinc electrode 16 which is connected through a resistance 22 to the electrode 6. The positive electrode 8 may consist of finelydivided nickel. When the accumulator is charged the zinc electrode prevents the iron electrode from losing its charge while the accumulator is not in use. The electrolyte may consist of a solution of potassium hydroxide. According to the Provisional Specification magnesium, aluminium or tin may be used instead of zinc.
Patent GB-378555-A (GB)
Title: Improvements in or relating to apparatus for the treatment of raw cement sludge
IPC: F27B7/00
Filed: 1931-05-20
Abstract: 378,555. Cement manufacture. KRUPP GRUSONWERK AKT.-GES., F., Buckau, Magdeburg, Germany. May 20, 1931, No. 14941. Convention date, June 25, 1930. [Class 22.] In the manufacture of cement, the raw slurry, before delivery to a rotary kiln 5, is dehydrated in a filter 1, and then passed in succession through a drier 2 and a rotary preheater 4 both heated by the waste gases from the kiln 5 and so arranged that the whole of the waste gases pass first through the preheater and then through the drier. The filter 1 is of the kind comprising a, drum around which pass cords or wire fabric bands 3, the latter extending into the drier 2 which is fitted with a shaking or knocking device to remove the filtered material from the bands.
Patent GB-695958-A (GB)
Title: Improvements in or relating to dehydration of maleic acid to maleic anhydride
IPC: C07C51/56
Filed: 1950-06-15
Abstract: Maleic anhydride is prepared by feeding an aqueous solution or slurry of maleic acid into a pool of maleic anhydride containing not more than 15 per cent by weight of water whether in the free state or combined in the form of maleic acid or fumaric acid, maintaining the pool under conditions of partial reflux, thereby condensing the maleic anhydride in the vapours and removing at least the greater part of the water vapour from the refluxing system so that the water in the pool does not exceed said 15 per cent value.  The refluxing pool of maleic anhydride is preferably maintained at 125-185 DEG  C. and under an appropriately reduced pressure to cause boiling.  The reflux condenser temperature is in general maintained at 65-100 DEG C.  The maleic acid feed preferably contains at least 40 per cent maleic acid.  This feed, which may be preheated to temperatures up to 105 DEG  C., is preferably introduced continuously or intermittently via a pipe terminating below the surface of the boiling pool of anhydride. Generally, conditions are such that the weight of maleic anhydride and acid in the vapour above the boiling pool is at least twice and preferably at least six times the weight of the water vapour.  Substantially all the maleic anhydride vapour is condensed while the water vapour is allowed to escape from the condensing system.  The process may be operated continuously, maleic anhydride being withdrawn either from the boiling pool or from the condensing system.  Examples are given.
Patent GB-117004-A (GB)
Title: An Improved Diving and Trimming Control for Submarines.
IPC: B63G8/22
Filed: 1917-10-18
Abstract: 117,004. Scotts' Shipbuilding & Engineering Co., and Ford, J. M. Oct. 18, 1917. Ballasting. - An automatic diving and trimming control for submarines is actuated by hydrostatic pressure acting on intensifiers arranged at the bow and stern which directly or indirectly control, through liquid means, the diving and trimming apparatus. Fig. 2 shows the apparatus applied to an arrangement of ballast tanks, but it may be emplcyed with other systems such as vertical screws or jet reaction apparatus. The water ballast is moved in or out of the tanks by reversible valveless rotary plunger pumps a, b driven by oil-hydraulic motors a<1>, b<1> of the Compayne or Williams-Janney type supplied with power from an electrically driven variable-stroke pump of the Hele-Shaw type. The pump b pumps water in or out of the diving tank d, while the pump b pumps water from one trimming tank c to the other f. The pumps are regulated by automatic regulators l, m controlled by the intensifiers o, n and by hand regulators B, A adapted to control the pumps independently of the automatic gear. The intensifiers comprise differential pistons n<2>, n<3>, the larger piston being subject to sea water pressure admitted through pipes z<1> and acting on oil contained in annular casings z, while the smaller pistons act on theoil in the pipe system o<5>, n<5>. Oil make-up connexions n<6> and drain connexions n<7> are provided. The regulator shown in Fig. 3 is for controlling the trimming pump and comprises a piston valve r actuated by a pair of oppositely acting pistons s, s<1> acted on by oil pressure from the intensifiers admitted through ports q<4>, q<5>. Pressure-fluid is admitted through port q<2> and exhausted through port q<3>, while ports q, q<1> connect the regulator to the motor. The valve is loaded by springs w resting on flanged thimbles w<2> and adjusted by a single screw u. A similar regulator is used to control the diving pump motor, with the difference that the pistons act in the same direction, against the action of a spring having a wide range of adjustment.
Patent GB-1049616-A (GB)
Title: A method of manufacturing a coreless rotor for an electrical rotating machine
IPC: H02K3/00
Filed: 1965-04-09
Abstract: 1,049,616. Moulding dynamo electric machine part. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. April 9, 1965 [April 10, 1964], No. 15171/65. Heading B5A. [Also in Division H2] To fix the winding of a coreless rotor to a carrier the winding is first located round a flange of the carrier and the outer surface of a coaxial inside mould and secured by an insulating tape. An outer mould is then placed round the winding which is impregnated with thermosetting resin. The assembly is heated to set the resin and, as the inside mould is made of a material having a higher coefficient of thermal expansion than the material of the winding, the tape is subject -to stress. After the resin has set the mould parts are removed leaving the carrier with the winding fixed thereto. A commutator is then secured to the carrier.
Patent GB-553574-A (GB)
Title: Electric lamp-cap
IPC: H01K1/46
Filed: 1941-11-26
Abstract: 553,574. Lamp-caps. WEIHS, H. G., and MAYER, R. F. Nov. 26, 1941, No. 15219. [Class 38 (i)] A bayonet or screw type cap made of moulded plastic material has the solder employed to secure the lead-in wires applied to a metallized surface or in a cavity in the insulating cap. The metallized surface 3 may be applied by electrodeposition or spraying and may be located in a cavity, the lead-in wire 4 passing through a hole 5 in the cap 1. A metallized surface 3A constitutes the screw contact and does not extend up far enough to be exposed above the holder. Attachment of the solder 6 to form a contact may be effected by an undercut recess, Fig. 4, and a small contact surface 6A, Fig. 5, similarly secured may replace the screw contact. Pieces of solder can be applied to the cap and then melted after passing the leadin wires through holes therein.