baber/WOPTO huggingface dataset:
Patent GB-1203479-A (GB)
Title: Improvements in or relating to optical apparatus
Inventor: KIRCHHOFF KURT
IPC: B41B13/00
Filed: 1968-05-20
Abstract: 1,203,479. Photographic type-composing. K. KIRCHHOFF. 20 May, 1968 [22 May, 1967], No. 23987/68. Heading B6W. [Also in Division G2] In an optical photo-composing apparatus a section of a type plate 2 illuminated by a light beam is imaged on an image plane 4 fixed relative to the type plate by an objective 20 comprising a zoom lens pivotable from a first position with the light beam passing through it in one direction to a second position with the light beam passing through in the other direction. By turning the optical system 20, Fig. 9, by rotating a disc 11 about its axis 12, which is exactly midway between type plate plane 2 and image plane 4 to ensure sharp focusing after a rotation, a reduction of 7À5 times is obtained. In an alternative arrangement, Fig. 11, a mirror 13 is disposed at an angle of 45 degrees to a light beam as is the axis 12 of the disc 11. A scale 14, Fig. 13, indicates the height of the enlarged images. The lenses are spaced so that ray tracing is telecentric and a Dove prism may be inserted. A telescopic anamorphotic system consisting of two cylindrical lenses (22), (23), Fig. 17 (not shown), may be inserted to distort or change the type character. The illuminating system may be adapted for increased size of the aperture of the lens system 20 and increased distance from the type plate to the lens system by swinging a convergent lens out of the light projection system.
Patent GB-297731-A (GB)
Title: Improvements in or relating to electric power plants with asynchronous generators
IPC: H02K17/38
Filed: 1928-08-21
Abstract: 297,731. Siemens - - Schuckertwerke Akt.-Ges. Sept. 26, 1927, [Convention date]. Running generators in parallel; regulation, automatic; boosting by static transformers.- Electrical generating plant comprising asynchronous generators is automatically regulated so that a certain number of machines, adjusted for constant load with varying frequency, carry the basic load and others the plate load, these being adjusted to give an output varying with the frequency. The adjustment of the basic load machines may be varied during the day in a predetermined manner. The plate load machines may be adjusted for constant wattless load the basic load machines taking the plates thereof. The Figure shows a basic load machine g' regulated for constant load by a cascaded commutator machine k<1> excited by a transformer t<1> and exciter e. The excitation is maintained constant by the winding w, which is also fed from the slip rings of the generator g<1> through an ohmic resistance W. The peak load machine g<2> is regulated in accordance with frequency variation, since the rotor of its cascaded machine k<2> is fed with a voltage from a transformer t<2> which is varied by frequency responsive apparatus k. The normal loading of both generators may be varied during the day by a cam disc, clockwork-device, which displaces relatively the row of contacts of each transformer and the co-operating, contact. The regulation of the wattless loads taken by the respective machines is obtained bv transformers with rotatable secondaries adapted to inject into the leads supplying the auxiliary machines an exciting potential displaced by about 90 degrees with respect to the potentials transmitted by the transformers t', t<2>, and the tappings of these auxiliary transformers may also be varied by cam discs in the course of the day. Variation of the wattless load in dependence upon frequency may be obtained by apparatus such as f operating upon the auxiliary transformers.
Patent GB-1406146-A (GB)
Title: Level sensor
IPC: G01F23/24
Filed: 1973-05-21
Abstract: 1406146 Electrical liquid level sensors MULLARD Ltd 21 May 1973 24070/73 Heading G1N In a liquid level sensor, a pair of Piezo-electric strips P 1 , P 2  are arranged in the feedback loop of an oscillator, the strips having a fixed mechanical coupling path which provides one phase of feedback signal for the oscillator and being provided with a second coupling path only when the strips are immersed in liquid which provides a substantially opposite phase of feedback signal for the oscillator, the oscillator assuming an oscillating or non-oscillating state depending upon the phase of the feedback signal, i.e. depending upon whether the liquid covers the strips P 1 , P 2 . In use, the sensor may be used to give an alarm when the level of oil in a vehicle engine falls below a predetermined level. As shown, the strips are of Piezo-electric multimorphic material and are mechanically coupled by an earthed metal plate M on which is mounted a printed circuit board PCB containing the oscillator components. The oscillator has a non-oscillating condition when the liquid contacts the strips P 1 , P 2 , and commences to oscillate as soon as the liquid falls below the level of the strips P 1 , P 2  to energize an audible warning device AWD. The sensor shown in Fig. 2 can be arranged in the engine oil dip stick. The Piezo-electric strips can be arranged so that the oscillator ceases to oscillate when the liquid level falls below the level of the strips. In this case, a relay may be triggered to light a warning lamp.
Patent GB-970289-A (GB)
Title: Camera battery test indicator
IPC: G03B7/085
Filed: 1963-06-18
Abstract: 970, 289. Photographic and cine cameras. EASTMAN KODAK CO. June 18, 1963 [June 29, 1962], No. 24171/63. Headings G2A and G2E. A photographic camera has an exposure control system provided with an electromechanical transducer having a movable output member in a first direction as a function of the intensity of scene light sensed by a photoresponsive element and in an opposite direction when coupled through a switch, to a source of electrical power of the camera. A photoresponsive device 10, e.g., a photoelectric cell, phototransister, photo-voltaic cell or photo-resistive cell is electrically connected with an electrical measuring instrument 11 through a switch 12. A movable member 13 of the instrument 11 is deflected as a function of scene brightness, in known manner, to vary the setting of a diaphragm vane 29 for automatically adjusting exposure value. On moving switch 12 to a second position to engage contacts 16, 17 a battery 18 is placed in circuit with the instrument 11 for measuring the potential difference across the battery. The polarities of the battery 18 and device 10 connections are opposite, thus causing the member 13 to deflect in opposite directions.
Patent GB-872553-A (GB)
Title: Composition and process for bleaching fabrics
IPC: D06L4/664
Filed: 1958-07-28
Abstract: A bleaching composition comprises from 0,001% to 1,0% by weight of a compound of the formula:-  <FORM:0872553/IV(c)/1> where R and R1 are carbocyclic aromatic radicals, Y is H or NaSO3 and at least one of R and R1 contains a sulphonic radical when Y is H, the composition having from 2-10% available chlorine derived from a compound which generates a hypochlorite ion in water.  The latter compound may be provided by a mixture of calcium hypochlorite, trisodium phosphate or soap or detergent and Glauber's salt or similar compositions comprising dichlorodimethyl hydantoin, N-sodium-N-chloroparatoluene sulphonamide or trichloroisocyanuric acid.  In example (1), cotton muslin is bleached with a composition containing a compound of the formula:-  <FORM:0872553/IV(c)/2> calcium hypochlorite and sodium sulphate, which is admixed in aqueous solution with sodium alkylaryl sulphonate, sodium tripolyphosphate, sodium silicate, sodium sulphate and sodium chloride.  In other examples, the radicals R and R1 of the specified compound, which is included in similar compositions, are:- <FORM:0872553/IV(c)/3> and when Y is H, R being:- <FORM:0872553/IV(c)/4> Specifications 684,842 and 696,038 are referred to.ALSO:A bleaching composition comprises from 0.001% to 1.0% by weight of a compound of the formula <FORM:0872553/III/1> where R and R1 are carbocyclic aromatic radicals, Y is H or NaSO3 and at least one of R and R1 contains a sulphonic radical when Y is H, the composition having from 2 to 10% available chlorine derived from a compound which generates a hypochlorite ion in water.  The latter compound may be provided by a mixture of calcium hypochlorite, trisodium phosphate or soap or detergent and Glauber's salt or similar compositions comprising dichlorodimethyl hydantoin, N-sodium-N-chloroparatoluene sulphonamide or trichloro-isocyanuric acid.  In Example (1), cotton muslin is bleached with a composition containing a compound of the formula <FORM:0872553/III/2> calcium hypochlorite and sodium sulphate, which is admixed in aqueous solution with sodium alkylaryl sulphonate, sodium tripolyphosphate, sodium silicate, sodium sulphate and sodium chloride.  In other examples, the radicals R and R1 of the specified compound, which is included in similar compositions, are: <FORM:0872553/III/3> and when Y is H, R being <FORM:0872553/III/4> Specifications 684,842 and 696,038 are referred to.
Patent GB-822824-A (GB)
Title: A steam generating system comprising a supercharged boiler
Inventor: SHIELDS JAMES RODGER
IPC: F22B1/24
Filed: 1956-08-08
Abstract: 822,824. Steam superheaters. ELLIOTT CO. Aug. 8, 1956, No. 24279/56. Class 123(3) [Also in Group XII] A steam power plant comprises a pressure-fired boiler 1 having an evaporator 2 from which steam-water mixture flows to a separator drum 9, steam flowing from the drum through a superheater 3 to a turbine 14. The boiler is fired by a burner 7 fed with oil or gas through a pipe 17 provided with a valve 18 and supplied with combustion air at a rate sufficient to maintain a pressure of from four to eight atmospheres in the furnace from a compressor 21 driven by a gas turbine 22. The gas turbine receives the exhaust gases from the boiler at a temperature which, under steady load conditions, is just high enough to allow the turbine to drive the compressor at the speed required for the delivery of the amount of air required at the particular load. A superheater by-pass 25 controlled by a damper 26 is provided in the boiler. Under steady load conditions the damper 26 is closed. When it is desired to increase the load rapidly, the fuel valve 18 is opened further whereupon the increased flow is sensed by a meter 29, the signal passing via a controller 28 to an operator 27 which opens the damper 26 sufficiently to cause such an increase in the gas turbine speed by virtue of the increase in exhaust gas temperature due to a proportion of the gas by-passing the superheater, that the compressor delivers to the burners the amount of air corresponding to the increased fuel rate. The opening of the damper 26 during periods of increasing load also protects the superheater from overheating by the suddenly increased flow of hot gases.
Patent GB-294792-A (GB)
Title: Improvements in instruments for the measurement of alternating potential differences
IPC: G01R19/00
Filed: 1927-09-17
Abstract: 294,792. Moullin, E. B. Sept. 17, 1927. Pressure meters.-An instrument for measuring alternating voltage comprises a three-electrode valve having asymmetric conductivity between the anode N and filament L and also between the grid M and the filament, the alternating voltage to be measured being applied between the grid M and filament L and the increase of the anode current being measured by means of a galvanometer G connected between the anode N and a point A slightly positive with respect to the positive side of the filament and calibrated directly in terms of the applied alternating voltage. No separate anode battery is employed. The circuit of the filament battery includes a resistance AB of such a value as to make the positive terminal of the filament L about 0.8 volts negative to the positive terminal of the battery. In the same circuit is a fixed resistance CD of such a value as to make the point D about 1 volt negative to the negative terminal of the filament, and an adjustable resistance DE to permit adjustment of the filament current to its standard value. The galvanometer G is provided with alternative shunt resistances 0, P, Q for varying the range and is also shunted by a condenser C<1> of about 1 microfarad capacity. A calibrating switch S enables the filament and grid to be connected. The grid M is connected to the point D through a resistance R of about 1 megohm and to one terminal H of the alternating voltage through a condenser C<2> of about, one microfarad capacity. The other terminal F of the alternating voltage is connected to the point D. Alternatively the resistance R may be connected in place of the condenser C<2>, which is omitted.
Patent GB-734250-A (GB)
Title: Improvement relating to head rest or like cushions
IPC: A47C16/00
Filed: 1953-09-07
Abstract: 734,250. Head-rest cushions. JORGENSEN, N. F. Sept. 7, 1953 [Sept. 15, 1952], No. 24633/53. Classes 52 (2) and 52 (4). A head-rest cushion is moulded in one piece and is of hooked formation to fit over the upper edge of a chair back. The interior may be cavitated and open at the rear face.
Patent GB-277698-A (GB)
Title: Improvements in and relating to the generation of electric power
IPC: H02P9/00
Filed: 1927-09-19
Abstract: 277,698. Fletcher, W. D. Sept. 17, 1926, [Convention date]. Driving-arrangements. - An apparatus for generating electric current for the actuation of equipment auxiliary to the operation of a main engine, e.g. for use on ships, comprises an electric generator driven either by the main engine or by an auxiliary engine, and means controlled automatically in dependence upon the speed are provided to determine which engine takes over the drive. The power for driving the generator is taken from the main engine when it operates at or above a predetermined speed, and from the auxiliary engine when the main engine is stopped or running below a predetermined speed. The generator 1 and the auxiliary engine 3 have a common shaft 4 which can be coupled to the shaft 5 of the main engine 2 through an electrically controlled clutch 6. A governor 8 driven by gearing 7, 7<1> from the main shaft is provided with contacts 11, 13 in the circuit of a relay 19 fed from the generator and controlling the operation of the clutch 6 and the actuating magnet 31 of the steam valve 35 of the auxiliary engine. When the main engine is stopped the clutch 6 is disengaged and the valve 35 is open. As the main engine comes up to speed, the magnet 31 is de-energized and the valve 35 is closed by the spring 36; at the same time the clutch magnets 38 are energized and the main engine takes over the drive. The auxiliary engine may be provided with a by-pass valve 47 for starting. According to the Specification as open to inspection under Sect. 91 (3) (a), the main and auxiliary engines may drive separate generators. This subject-matter does not appear in the Specification as accepted.
Patent GB-443491-A (GB)
Title: Improved process for the recovery of solvents from the fractions obtained on extracting oils and the like liquid raw material with a mixed solvent
IPC: C10G21/28
Filed: 1934-08-27
Abstract: In the recovery of the solvents from the raffinate (refined product) or extract solutions obtained in the refining of oils with a mixture of solvents, the solutions are stripped with one of the constituents of the solvent mixture in the vapour form.  The mixed solvent may comprise liquid sulphur dioxide as used in the Edeleanu process together with benzol, chloroform, ether, carbon bisulphide, &c.  In a process using liquid sulphur dioxide and benzol as the solvent mixture, the refined product solution is treated in a series of evaporators 8, 12, and 13; and the extract solution <PICT:0443491/III/1> in a corresponding series 18--19, 22 and 23, the solvent-free raffinate being removed from the evaporator 13 by a pump 15 and the solvent-free extract from the evaporator 23 by a pump 25. The raffinate solution is preliminarily evaporated in the evaporator 8 which is under condenser pressure and the mixed vapours evolved flow to a condenser 9.  The solution then flows down filling material contained in the stripping evaporator 12, which is under atmospheric pressure, and in counter-current to a stream of sulphur dioxide vapour, and the benzol vapours removed flow to a cooler 30 and the liquid is pumped to a collector 10.  Traces of sulphur dioxide in the solution are removed in the evaporator 13 which is under vacuum. Similarly, the extract solution is preliminary evaporated in evaporators 18--19 to remove the low boiling sulphur dioxide before being treated in the stripping evaporator 22 and the vacuum evaporator 23 as in the case of the raffinate solution.  The evaporator 18 is maintained at low temperature by heating with benzol vapours evolved from the steam heated evaporator 19.  Any water contained in the extract is removed by dephlegmation with liquid sulphur dioxide in a column 28.  The sulphur dioxide vapour evolved from the evaporator 18 is partly used in the stripping columns 12, 22, and partly liquefied in a condenser 26.  The traces of sulphur dioxide removed from the evaporators 13 and 23 are condensed and pumped to the condenser 9. In a modification, the stripping is effected in situ, sufficient benzol being present in the raffinate or extract solution, after the mixed vapours have been driven off in a preliminary evaporator, to strip the solution of sulphur dioxide remaining. The residual benzol in the solution is stripped by means of steam in a succeeding evaporator.  Additional benzol may be added to the evaporator in which the stripping is effected.
Patent GB-963839-A (GB)
Title: Improvements relating to rainwater heads and the like and mountings therefor
Inventor: DAVIDSON ALISTAIR RITCHIE
IPC: E04D13/04
Filed: 1962-06-27
Abstract: 963,839. Rainwater &c. heads. A. B. PLASTICS Ltd. June 26, 1963 [June 27, 1962], No. 24727/62. Heading F2P. In a rainwater or waste-water head 22 and a wall mounting 10 therefor, one or both of which are formed of resilient synthetic plastics material, e.g. polyvinyl chloride, the mounting carries a stop 16 upon which the head rests when in position, and the head and mounting also carry complementary members of a snapaction device for securing the head to the mounting. As shown, the mounting, which is secured to a wall, is of T-section and has a resilient tongue 18 provided with a rearward enlargement 19 that engages the abutment face 20 on the head. The stop 16 of the mounting has an upper edge for engagement with the surface 23 of a T-slot or recess 24 formed in the head and when the latter is slid downwardly on to the mounting. The tongue 18 may be provided on the head.
Patent GB-650044-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/70
Filed: 1947-09-09
Abstract: 650,044. Cathode-ray tubes. PHILCO CORPORATION. Sept. 9, 1947, No. 24735. Convention date, Dec. 3, 1946. [Class 39 (i)] A cathode-ray tube having a screen, a source producing an electron beam directed to impinge on said screen and means for deflecting the electron beam, is characterized by the provision of means for establishing in the path of the beam between the deflecting means and the screen a magnetic field of substantially uniform density, extending transversely to the tube axis and so shaped that the length of the path of said beam through the field varies in accordance with the extent of the deflection of the beam in a direction transverse to the direction of the field, in order that such deflections given to the beam by the deflecting means may be increased proportionately. The cathode-ray tube 11 has a conventional type magnetic deflection system 21, energized from low-power horizontal and vertical deflection generators 22 and 23, producing a horizontal sweep l on the fluorescent screen 13 which forms part of a substantially spherical surface having its centre at the apparent centre of deflection 33. A magnetic lens system 31 produces a substantially vertical field across the tube in the directions indicated by the symbols 43 and 44, thus expanding the horizontal sweep to a magnitude L without extra power consumption. A small compression of the vertical sweep which results if the field is not strictly vertical may be compensated by slightly increasing the output of the vertical deflection generator 23. The magnetic lens comprises two bar magnets 61 and 62, Fig. 4, having triangular polepieces 63 and 64, 65 and 66, which produce a field substantially triangular in shape on either side of the tube axis and increasing in strength linearly with distance from said axis. In a modified arrangement, the triangular polepieces are extended towards the screen to increase the length of field traversed by the beam as its deflection increases. A known type of arrangement is described whereby the horizontal deflection in a cathode-ray tube is amplified by means of a magnetic lens comprising four bar magnets disposed about the neck of the tube as the sides of a rectangle in a plane normal to the tube axis and with like poles adjacent. With this arrangement there is considerable compression of the vertical deflection.
Patent GB-707607-A (GB)
Title: Improvements in or relating to furnaces
IPC: F27B3/26
Filed: 1951-10-23
Abstract: 707,607. Open-hearth furnaces. OESTERREICHISCH - AMERIKANISCHE MAGNESIT AKT.-GES. Oct. 23, 1951 [Dec. 6, 1950], No. 24758/51. Class 51 (2). [Also in Group XIII] In an open-hearth furnace having at each end a regenerator chamber 3 (see Group XIII) dis posed in a concrete trough 7 and a slag chamber 4 sited on a concrete slab 8 a system of air cooling ducts is arranged at the joints between the concrete and the adjacent brickwork. Vertical ducts 10 having their upper openings protected by screens 25 and horizontal ducts 11 are interconnected by a duct 12 encircling the base of the regenerator chamber 3 said duct 12 being connected to an air shaft 16 by downwardly sloping ducts 15, and horizontal ducts 21 below the slag chamber 4 running transversely of the furnace are connected to the vertical ducts 10 in the adjacent wall of the regenerator chamber. The air shaft 16 is covered by a plate 17 with a grate 19 disposed over a dust collector 18 and the bottom of the air shaft serves as a sump for any water seeping into the cooling system. Convection currents set up in the vertical ducts normally ensure sufficient circulation of cooling air from the shaft 16, but forced draught may be used. The air ducts may be formed in either the concrete, the adjacent brickwork or partially in both, and in the case of the vertical ducts they may be bounded laterally by the buckstays provided round the regenerator walls.
Patent GB-1349429-A (GB)
Title: Process for producing welded metal tubing
IPC: B23K13/02
Filed: 1972-05-25
Abstract: 1349429 Welding by pressure OLIN CORP 25 May 1972 [21 June 1971] 24760/72 Heading B3R In welding a copper or copper base alloy strip into tubing, the strip is formed into an open tube with a longitudinally extending gap whose edges are brought together at a weld point in a forged weld and the girth of the unwelded tube is reduced at the weld point, the girth reduction, i.e. the difference between the girth of the unwelded tube and the final circumference of the tube excluding the dimension of any bead formed for any ratio between 0À01 and 0À08 of the tube wall thickness to tube outside diameter being as shown by the curve ABDC in Fig. 3 and being at least 0À080 inch for ratios in excess of 0À08. The strip is formed in a tubing mill to a gapped tube which passes through a high frequency induction coil 10 (or alternatively it may engage current supplying contacts), an impeder I being arranged within the tube and a seam guide 14 being arranged between the strip edges. Rolls 6, 6 bring the edges together at a weld point 7 to produce a weld as shown in Fig. 2 with only the portion 24 being heated to welding temperature the portions 25 being unwelded or containing squeezed out molten metal. The girth reduction is preferably that shown by the curve EFDC in Fig. 3.