baber/WOPTO huggingface dataset:
Patent GB-1039151-A (GB)
Title: Improvements in or relating to light filters adapted to selectively trap light passing into the filter
IPC: G02B5/00
Filed: 1963-05-13
Abstract: 1,039,151. Filters. DOUGLAS AIRCRAFT CO.Inc. May 13,1963 [Oct. 15, 1962],No. 18817/63. Heading G2J. A filter for absorbing all stray light falling on a screen e.g. a C.R.T., comprises a stack of thin transparent sheets (. 003-. 01"), each sheet bearing a grid of parallel lines of highly absorbent material on at least one surface, the sheets being assembled and cemented with the lines in perfect registration to provide a plurality of depthwise viewing cells. The axes of the cells may be normal to the plane of the filter, or at a preselected angle, and the axes may be parallel or slightly divergent. As shown, angular rays 48, 50, 52 are reflected in such manner that they are absorbed by the filter elements at different levels. Rays which are parallel to the cells pass straight through. In a modification, Fig. 8, (not shown), the outer-most filter may be rotated to a position such that the light output is greatly reduced and is suitable for use in dark conditions as,for example, for night flying instruments.
Patent GB-459439-A (GB)
Title: Improvements in or relating to electrical musical instruments
IPC: G10H3/10
Filed: 1935-07-02
Abstract: 459,439. Electrical musical instruments. COMPTON ORGAN CO., Ltd., J., Chase Road, North Acton, London, and BOURN, L. E. A., 22, Stanwell Road, Ashford, Middlesex. July 2, 1935, No. 18881. [Class 88 (ii)] In an instrument employing electrostatic induction, a set of wave-form primary elements has a common relatively rotatable secondary element and corresponds to a single order of the partials of a series of scale-notes. The primary elements (one from each of the sets) corresponding to the partials of a single note are connected together and energized through a single key-contact. In the Figure, wave-forms 1a, 1a<1> in different sets yield different partials of the same note, while wave-forms 1b, 1b<1> yield corresponding partials of another note. Depression of key 3a of the first note by closing a single contact 4a connects the rings 1a, 1a<1> ... to a tap on a resistance 5a across battery 6. A condenser 7a between the rings 1a .. and earth with the resistance 5a ensures absence of key-click and produces the desired " attack." A second condenser 8a may be introduced across resistance 5a to produce a long delay factor. The relatively rotatable secondaries 2, each transmitting an order of partials, are connected to separate variable-Á valves 11 whose grids are normally given a negative bias by a battery 12 and fixed leaks 13 and resistances 14 connected to bus-bars 15. Operation of a stop 16 connects selected bus-bars to earth through resistances 17 of preselected value thus raising to varying degrees the grid-potentials of the valves 11 to determine the timbre of the note produced in the loudspeaker means connected at 10. Specifications 403,444 and 433,050 are referred to.
Patent GB-874360-A (GB)
Title: Improvements in and relating to surgical pads
IPC: A61F13/06
Filed: 1960-05-27
Abstract: A surgical pad, primarily for use on the foot, comprises two thin, film-like cover-sheets, a layer of cushioning material between the coversheets, a seam securing all the sheets together adjacent to the boundary edge of the pad, and a flexible attachment loop with its ends held by the said seam.  Preferably the materials used are thermoplastic and the whole pad is completed by a single heat sealing and severing operation, by placing the various layers and the loop in position between suitably shaped dies.
Patent GB-1474153-A (GB)
Title: Switching system scanner
IPC: H04Q3/00
Filed: 1975-05-06
Abstract: 1474153 Automatic exchange systems INTERNATIONAL STANDARD ELECTRIC CORP 6 May 1975 [17 May 1974] 18926/75 Heading H4K In a scanning arrangement wherein the devices to be scanned are arranged in a coordinate matrix means are provided for giving a fault indication if interrogation pulses are applied simultaneously to two or more of the rows of the matrix. Sixty four groups G0-G63 of sixteen devices 0-15, e.g. line circuits, junction circuits, are arranged as shown in a 64 by 16 co-ordinate matrix. To scan a particular group an interrogation pulse is applied to one of the rows of the matrix and a scanner not shown, scans the column wires S0-S15 for devices of the group which respond to the interrogation. To guard against two rows being simultaneously interrogated each row is coupled via a respective constant current device SC0-SC63 to a detector DT which produces an output on wire SDT0 if one row is being interrogated and an output on both outputs SDT0 and SDT1 if more than one row is simultaneously interrogated. Circuits DE0 and DE1 are used for testing the operation of the detector DT.
Patent GB-267389-A (GB)
Title: Outline maps
IPC: G09B29/00
Filed: 1926-07-29
Abstract: 267,389. Thomas, W. July 29, 1926. Printing processes.-Outline maps are copied' by means of a sheet of thick paper or board A having on one side a dotted outline in relief of the map, the sheet B, on which the copy is to be made, being laid thereon and rubbed with a pad C composed of thin flexible fabric impregnated with cobblers' wax. Relief outlines to more than one scale can be formed on the paper or board. According to the Provisional Specification, the rubber consists of blotting-paper impregnated with heel-ball.
Patent GB-189870-A (GB)
Abstract: 189,870. Barr & Stroud, Ltd., Barr, A., and Stroud, W. Sept. 8, 1921. Sights and methods of sighting.-The azimuthal correction # to be imparted continuously to guns on board ship to suit the angle of elevation #, and the varying inclination p of the trunnion axis due to roll, is obtained by the use of a rollindicator of the Mallock type arranged so that its angular motions with reference to the deck may be followed by hand-operated mechanism to give a continuous measure of p which is passed on to apparatus for calculating the formula # = # tan. #. The Mallock roll-indicator shown in Fig. 1 comprises a stabilized drum 1 mounted on frictionless pivots 2 and completely immersed in liquid in a casing 4. When the ship rolls, a mark 7 on the drum is kept in register with a mark on a window 6 by rotating the casing 4 about trunnions coaxial with the pivots 2 through the medium of a handle 10, gearing 11, 12, 14, 15, shaft 18, pinion 19 and rack 20. The restoring movement thus made., which is proportional to p, is communicated to the calculating apparatus through a shaft 33. As the bearing of the target changes, the plane of the drum is kept parallel to the axis of the gun trunnions by rotating the casing 4 about a vertical axis by means of a shaft 26 and gearing 28, 30. During this movement, the pinion 19 is prevented from rotating relatively to the rack 20 by means of a sun-and-planet gear 16, 17, 31. Fig. 4 shows in plan one form of calculating apparatus for rotating a pinion 49 by an amount proportional to # tan #. The apparatus comprises a slotted bar 52 which is rocked about a pivot 53 by the sliding movement of a nut 37 mounted on a screw 36. This screw is rotated by the shaft 33, Fig. 1, by an amount proportion to #. A cross-bar 46, which is moved away from the pivot 53 by rotating screws 43, 44 by an amount proportional to tan #, slidably carries beneath it a rack engaging the pinion 49, a pin 50 on the rack moving in the slot in the bar 52. The calculating apparatus may comprise a multiple-cam device of the type described in Specification 126,798, [Class 106 (i), Calculating &c.], adapted to deal with any desired functions of # and # to give the correction in elevation as well as in azimuth. Specification 133,974 also is referred to.
Patent GB-1108501-A (GB)
Title: Improvements in the continuous casting of elements such as rods or tubes
IPC: B22D11/128
Filed: 1964-05-07
Abstract: 1,108,501. Continuous casting. P. W. COLLINS. 7 May, 1965 [7 May, 1964], No. 19033/64. Heading B3F. A cast bronze or ferrous rod or tube is withdrawn continuously from a mould 12, e.g. of graphite, by rollers R at a constant speed on which continuously varying speed pulsations are imposed. The imposed speed rises from and returns to zero. The rollers R have cog wheels 16 on their axles driven by a chain 16a from a motor 25 and gearing 19. The latter may be controlled to produce cyclic increases in speed. Alternatively, the gearing may drive the chain 16a at constant speed but also drive, via further chains and wheels 21, 22, a wheel 20 which moves a wheel 18, mounted eccentrically of it and bearing on the chain 16a, to vary the effective length of the chain. In another alternative, Figs. 2, 3 (not shown), the gearing 19 rotates an eccentric (28) which translates a wheel (18), bearing on the chain, in a reciprocatory manner. The molten bronze is held in a crucible 10 in a furnace 11. There is a cooling sprayer 15 and a starter bar 24.
Patent GB-353644-A (GB)
Title: Improvements relating to two-stroke-cycle oil engines
IPC: F02B25/00
Filed: 1930-06-23
Abstract: 353,644. Cooling engine pistons. McCULLOUGH, S. J., 7, Alfred Street, Belfast. June 23, 1930, No. 19040. [Class 122 (i).] To cool the pistons 4, 5 of a two-stroke-cycle internal-combustion engine, air is drawn into the cylinders 1, 2 on the upstroke through ports 7a, 9a, Fig. 2, passes through perforations 15, 16 into the pistons and through valves 19, 20 to the spaces 17, 18. On the downstroke the air is forced through non-return valves 21, 22 into a reservoir 6 from which it passes to the combustion chamber 3 common to the cylinders. One of the pistons has a lead over the other.
Patent GB-863511-A (GB)
Title: Process for the manufacture of benzene-1-3-disulphonic acid
Filed: 1958-06-13
Abstract: <FORM:0863511/IV (b)/1> Benzene-1, 3-disulphonic acid is produced by reacting benzene with sulphur trioxide in a single-stage process by carrying out the reaction at a temperature above 100 DEG C. in a mixture containing benzene-1, 3-disulphonic acid and sulphuric acid or sulphur trioxide.  In order to produce as pure a product as possible, it is advantageous to carry out the reaction in the presence of a sodium salt such as sodium sulphate or the sodium salt of benzene-1, 3-disulphonic acid.  In an example, a sulphonation mixture containing 35% by weight of benzene-1, 3-disulphonic acid, 65% by weight of sulphuric acid and a quantity of sodium benzene-1, 3-disulphonate amounting to about 5% by weight p  (calculated on the whole reaction-mixture) is circulated, at 135 DEG -140 DEG C., through the apparatus shown by means of pump 5 at the rate of 17 litres per hour.  Liquid sulphur dioxide is introduced, at the rate of 400 grams per hour, below the surface of the mixture in vessel 1; and benzene is introduced into vessel 2 at the rate of 177 grams per hour.  A final product containing 92% of benzene-1, 3-disulphonic acid is withdrawn through valve 6. Specification 747,659 is referred to.
Patent GB-193610-A (GB)
Abstract: 193,610. Gledhill, A. H. Jan. 12, 1922. Tabular calculators for computing wages, the price of a number of articles at a given price per article, &c. comprises a drum A bearing the predetermined arrangement of numerals and a longitudinally slidable member B made of a transparent material such as celluloid or xylonite and having an index mark or inspection aperture to indicate or expose one of the figures on the drum. The drum A is fixed on a spindle a adapted to be rotated by means of a toothed wheel a<1> thereon and a rack a<2> formed on the underside of a slide A<1> and a second slide B is adapted to move the sliding member B through a rack b<6>, and a toothed wheel b<5> mounted on a sleeve loose on the spindle a and connected by bevel gearing b<4> to a drum b<3>. Over this drum passes a chain b<2> to which is attached a clip b on the member B slidable on guide rods b<1>. The drum may be detachable or fitted with removable charts, and the slides A<1>, B<1> may be formed with perforations for actuation by a stylus. A restoring member C is provided to enable the parts to be returned to initial position. Depression of this member releases pawls c from ratchet wheels c' associated with the wheels a<1>, b<5> and a spring a<3> through an arm a<4> and chain a<5> causes the slides to return to normal position.
Patent GB-727327-A (GB)
Title: Improvements in or relating to the pneumatic conveying of loose material following its treatment in a working machine
IPC: B65G53/42
Filed: 1952-07-31
Abstract: 727,327. Pneumatic conveyers. MIAG MUEHLENBAU UND INDUSTRIE GES. July 31, 1952 [Aug. 1, 1951; July 14, 1952], No. 19361/52. Class 78 (1). Material after treatment in a machine, such as a grinding mill, falls through a funnel 3 and over a pivoted curved member 2 formed with a comb-like edge 22 into the carrier air stream. The area of the outlet from the funnel is adjustable either by swinging the member 2 or the pivoted counter-wall 9. Air enters the conveying pipe 5 from the atmosphere through the passage 13 and from the machine through the passage 14. The areas of the passages relatively to each other can be adjusted by moving the pivoted flap 15. The parts 2, 9 and 15 are mounted in a casing 16 which is detachable from the machine.
Patent GB-250803-A (GB)
Title: Improvements in and relating to double fluid cells
IPC: H01M6/24
Filed: 1925-07-30
Abstract: 250,803. Darimont, L. July 30, 1925. Addition to 241,729. Diaphragms; electrolytes.-The. cement coating of the porous membrane of the two-fiuid cell described in the parent Specification is covered with a layer of an alkaline oleate which reacts with chloride of iron or zinc in the cell to produce a semi-permeable membrane. This enables alkaline salts such as chloride of sodium or potassium or rock salt to be used in the exciting solution. A suitable covering comprises 4 grams of white hard soap dissolved in 2000 c.c. of water. To this any of the following substances may be added, viz. :-Corn flour 12 grams, soda phosphate 20 grams, linseed oil 8 c.c., caustic potash or soda 10 grams, or 50 c.c. of a solution containing 6 per cent of alum in water. The following composition is suggested for the exciting solution, viz. :-Water 1000 c.c. and sodium chloride 250 grams; to this may be added any of the following, viz. :-Double chloride of sodium and zinc 25 grams, dextrine or fish glue 60 grams, zinc or calcium chloride 10 grams. A water absorbing or porous material-e.g. cottonmay also be added to the exciting solution. The depolarizing solution may comprise ferric chloride 450 grams and barium chloride 15 grams, with an optional addition of chromium oxide and hydrochloric acid. Water is added till the osmotic pressure coresponds with that of the exciting solution.
Patent GB-184668-A (GB)
Title: Improvements in and in connection with grabs, excavators and the like
IPC: B66C3/12
Filed: 1921-07-19
Abstract: 184,668. Priestman, S. H., and Prince, S. July 19, 1921. Driving-gear for winding and paying-out apparatus; apparatus with jointly-controllable drums. -Winding-gear for double-chain grabs comprises a loosely-mounted hoisting-barrel c driven by a wheel d, and a second barrel a for the opening rope fixed to the shaft b. The winding-drum drives the shaft b, when rotated in the direction for hoisting, through a friction clutch e and ratchet mechanism f, g, the clutch being applied with sufficient force by a spring h to take up any slack in the opening rope. When the opened grab rests on the dump and the winding-rope is wound in to close it, the barrel c drives the barrel a sufficiently to take up any slack in the opening- rope, but since additional rotation of the barrel a would transfer the weight of the grab from the ground to the opening-rope the clutch slips as soon as the opening-rope becomes taut. When hoisting commences, the weight of the grab is taken by the hoisting-rope, and the clutch remains operative to wind up the opening-rope. To dump the raised load, the barrel a is held by a brake, and the pawl f over runs the ratchet to permit the drum c to pay out without disengagement of the clutch.
Patent GB-745355-A (GB)
Title: Fluidized roasting of finely-divided solids
Inventor: FISCHER FRANCOIS ALBERT
IPC: C22B1/10
Filed: 1952-08-01
Abstract: Finely-divided solids which tend to fuse at the roasting temperature, e.g. sulphide-bearing ores or concentrates are fluidized at above the fusion temperature, by means of a gas having a velocity sufficient to cause pelletization of the solids but insufficient to carry a substantial part of the solids out of the reactor.  The velocity of the gas is necessarily in excess of that required to fluidize the material below the fusion point and is generally about 2-4 times that used for fluidizing particles of similar size and specific gravity. The bed preferably consists predominantly of roasted solids.  Whilst particle sizes of -100 mesh (Tyler) are very suitable, larger particles may be used provided the product pellets do not exceed 1/2 inch.  In examples, galena, speiss (primarily copper and arsenic) and zinc blende were roasted at up to 650, 800 and 925 DEG C. with space rates of 3, 2 and 2 ft./sec. respectively, after other attempts to fluidize at lower space rates and lower temperatures above fusion, having failed due to fusion of the bed.  Pyrites and pyrrbotite are also mentioned.
Patent GB-1309512-A (GB)
Title: Developer sheets for pressure-sensitive recording
IPC: B01J13/02
Filed: 1971-06-08
Abstract: 1309512 Developer sheets for pressure-sensitive materials FUJI PHOTO FILM CO Ltd 8 June 1971 [8 June 1970] 19491/71 Heading D2B A developing sheet for pressure sensitive materials comprises a support having coated on one face thereof a developer layer containing an alkaline substance, e.g. an alkali or alkaline earth metal hydroxide or carbonate, an acid clay and a phenolic compound. Specified phenols are p-cresol, p-nonyl phenol, pphenyl phenol, p-(p-bromophenyl) phenol, (biphenyl) - phenols, 2,4 - xylenol, 2,4 - diphenyl phenol, 2 - chloro - 4 - phenol, 2,3,5 - trimethyl phenol, tetramethyl phenol, 4 - phenyl pyrocatechol, o,o' - bis phenol, 4,4' - bis - o - cresol, α,α - diphenyl - 4,4' - bis - o - cresol, biphenyl tetrols, 2,4' - methylene bisphenol, methylene - bis resorcinols, 2,2'-methylene-bis-p-cresol, methylene bis benzyl phenols, p,p - isopropylidene bisphenol, methylene bis halophenols, and 4,4' - thiobisphenol. The coating solution for the layer may contain a binder, e.g. styrene/ butadiene latex. The developer sheet may have coated together with the developer materials or on the opposite side thereof microcapsules containing coupler.
Patent GB-205559-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D25/16
Filed: 1922-07-17
Abstract: 205,559. Parsons, Sir C. A., and Carnegie, A. Q. July 17, 1922. Adjusting for position. - In elastic-fluid turbines means are provided for automatically varying the relative positions of the rotor and stator. The thrust block and rotor are moved bodily in relation to the stator so as to prevent fouling of parts due to changes in the temperature or load, such parts being correctly positioned for efficient working when the machine is hot. The axial position of the rotor d relative to the casing is varied by a movable thrust-block housing h, the thrust-pads f engaging a collar e on the rotor shaft. The housing h is connected by rods x and a bar w to two hollow rods n which are heated internally by steam tapped by way of a pipe o from a suitable stage of the turbine, a needle valve v controlling the flow of steam. Worm-gear z, 4 actuated by a hand-wheel 3 is provided for the initial adjustment of the housing h. Alternatively, the controlling-rods n may be electrically heated by coils which are so connected to the alternator driven by the turbine that the heating effect is proportional to the load. To provide a time lag for the compensating gear, so as to allow for the time taken by the rotor and stator to attain their working temperature, the controlling rods may each consist of two parallel members 10, 11, Fig. 5, having thin webs connected by an adjustable number of clamping pieces 13, which regulate the flow of heat from the steam-heated member 10 to the second member 11 acting as the main controlling rod. Fig. 7 shows one of a number of modifications of such double members 10, 11. A form of delay action for use with a hollow controlling-rod 19, Fig. 9, comprises a handadjusted piston 20 for varying the length of the hollow rod in contact with the steam. In a further modification, instead of the expansion of a main controlling-rod, the axial expansion of the machine itself is utilized to adjust the thrust-block through a pivoted lever, and in another modification, a relay or servo-motor is used to vary the relative positions of the rotor and stator. Specifications 15060/05, 9690/08, [both in Class 110, Rotary engines &c.], and 2221/09, [Class 110 (iii), Turbines &c.], are referred to.
Patent GB-1512652-A (GB)
Title: Single-element optical lens
IPC: G11B7/1374
Filed: 1975-05-09
Abstract: 1512652 Aspheric singlet lenses PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 9 May 1975 [14 May 1974] 19627/75  Heading G2J A single component lens has both refractive surfaces aspheric and coaxial and is optimized by ensuring that the point defined by coordinates falls between the straight lines given by:- q = 2À58 - 1À29p (line 23), Fig. 2 (not shown) and q = 2À22 - 1À5p (line 22), Fig. 2 (not shown) where e = the axial thickness of the lens n = the refractive index of the lens material f = the focal length C 1  and C2 are the respective osculating curvatures of the refractive surfaces at the intersections with the lens axis. Two examples are given. The lens is of use in optically reading disc recordings.
Patent GB-241332-A (GB)
Title: Improvements in or relating to weighing scales
IPC: G01G23/35
Filed: 1924-08-19
Abstract: 241,332. White, A. E., (Dayton Scale Co.). Aug. 19, 1924. Cameras combined with flashlights and like apparatus.-A weighing-scale having a chart which is displaced in accordance with the load, is provided with a recording-camera, dissociated from t h e weighing- mechanism, for taking and recording a reading from the chart. As shown, a price chart 28 is situated adjacent the usual computing drum 25, both the chart and the drum being formed of transparent material. A recording device 41 is movably mounted on tracks 34<a> adjacent the drum 25, to enable it to register with any desired price column on the drum. The device comprises a roll of light-sensitive paper 42 adapted to be fed through a guide shoot 40 arranged in front of a focusing tube 38, so that when a lamp 30 situated within the drum 25 is illuminated, an image of a part of the chart is formed on the sensitive paper. A transparent screen 66 carries the wording that it is desired should appear on the ticket, the position of the screen being adjustable by a handle 67. The paper is fed into the shoot 40 by depressing a lever 50, which is connected through a ratchet device to a roller 43 over which the paper passes. A projection 53 on the lever 50 engages a second lever 54, which operates a switch 60 in the lamp circuit, and is connected at its lower end to a knife 48 which cuts the paper into the required lengths. A dash-pot 56 connected to the lever 50 maintains the switch 60 in its closed position for sufficient time to print the ticket. The paper is moistened to activate it, by means of a roller 46 dipping into a tank 47. In a modification, the chart 28 and drum 25 are formed of opaque material and are illuminated by lamps carried by the recording device.