baber/WOPTO huggingface dataset:
Patent GB-580548-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: H02P7/00
Filed: 1944-01-24
Abstract: 580,548. Master control of motors. IGRANIC ELECTRIC CO., Ltd. Jan. 24, 1944, No. 1345. Convention date, Jan. 23, 1943. [Class 38 (iii)] Non-regenerative braking. In a system for reversing electric motors by plugging, a resistance maintained in the plugging circuit for a temporary period during plugging, is automatically reduced by means under the control of further means, subjected to a voltage proportional to that of the plugging circuit, the conductivity of which varies with variation of applied voltage. In Fig. 1 operation of a master controller 10 accelerates in either direction a D.C. series motor, supplied from lines L, L2 and having an armature A and a field F, by sequential operation of electromagnetic contactors, contacts 6, 7, 8, 9 of which short circuit resistances R1, R2, R3, R, in the motor circuit. The contactors are of the type in which an operating winding, e.g., 6a and a restraining winding, e.g., 6b act in opposition. The energization of restraining winding 6b of the first contactor, through a neon lamp 33 and preferably an adjustable potentiometer r, from the volt-drop across R1, is insufficient to prevent operation of this contactor when starting the motor from rest and, when the contactor operates, the opening of normally closed contact 6c de-energizes the restraining winding of the next contactor, which operates after a time delay introduced by condenser 30. Normally closed contacts 7c, 8c and condensers 31, 32 similarly ensure correct sequential and delayed operation of the remaining contactors. When controller 10 is reversed to effect plugging, all the contactors operate without delay to re-insert the resistances in the motor circuit but the volt-drop across R, resulting from the increased motor current during plugging causes neon lamp 33 to strike so that restraining winding 6b is energized and contactor operation to accelerate the motor in the reverse direction is prevented until the motor current has fallen and the neon lamp is extinguished. The latter occurs prior to the fall of motor speed to zero. In modifications:- (a) The first contactor operates, after plugging, on reduction of the energization of restraining winding 6b to a value, other than zero, at which the neon lamp is still conductive. (b) Potentiometer r1, is connected across more than one of the resistances R1-R4. (c) The neon lamp is replaced by a resistor having a negative voltage-resistance characteristic, characteristic curves indicating relative performances being shown. Application of the invention to A.C. systems is referred to.
Patent GB-136007-A (GB)
Title: Automatic Plaiting Down Apparatus for Materials which are in Rope Form, and in Long Lengths.
Inventor: MUMFORD JOHN ARTHUR
IPC: D06B23/00
Filed: 1919-01-20
Abstract: 136.007. Mumford, J. A. Jan. 20, 1919. Piling yarns and fabrics in rope form.-Textile or other materials in rope form are plaited down by a funnel which is swung backwards and forwards and also rocked crosswise, the axes of both movements being practically on the same level. The funnel C is tapered and may be of any section and made of wood, enamel, &c. It is hung in a fork or ring BA by bearing-pins BP, the fork being mounted on a rock-shaft R<3> driven from the driving-pulley DP through a worm shaft WS, worm W, wormwheel WW, adjustable connecting-links and arms E<2>, E<1>, A<0>, A<01>, and the shaft R<1>. The funnel is thus given a slow crosswise motion. The two- and-fro motion is given through the crank-disk D<2>, rod E<3>, arms A<2>, A<3> on rock-shaft R<2>, and a universally-mounted rod E<4> connected to a part C<2> of the casing C' of the funnel. The driving- gear may be arranged to work a pair of funnels, one on each side, and further funnels may be rocked from the shaft R<1> and have the backward and forward motion imparted to them by connexion to the first-mentioned funnels.
Patent GB-724396-A (GB)
Title: Improved method for wet-refining non-ferrous metals and alloys
IPC: C22B9/10
Filed: 1953-01-19
Abstract: Lead impurity is removed from a nonferrous metal or alloy by immersing the metal or alloy in divided form in a bath, at room temperature, which comprises water, nitric acid and a substance capable of modifying the surface tension of a liquid, 50-100 Kgs. of bronze, brass or aluminium cuttings from machine tool operations may be treated by immersion in a bath of the following composition: water 10 litres; nitric acid (36 DEG  Baume) 10 litres; alkyl sodium sulphate 0.5 litre.  The bath may be agitated by mechanical means or by air or other neutral gas or the vat p  containing the bath may be put under pressure and the liquid circulated by means of a pump.  The vat is preferably made of, or internally coated with, cement or ceramic material.
Patent GB-488835-A (GB)
Title: Production of photographic colour separation records
IPC: H04N1/60
Filed: 1938-01-17
Abstract: 488,835. Copying by scanning. KODAK, Ltd. Jan. 17, 1938, No. 1477. Convention date, Jan. 16, 1937. [Class 40 (iii)] A coloured original 11, Fig. 1, is scanned by light from a source 10, and the beam is split at 13, the multiple beams passing through colour filters 14R, 14G, 14B to cells 15R, 15G, 15B, which control light valves 17R, 17G, 17B recording colour separation records, i.e., monochromatic pictures 20R, 20G, 20B corresponding to the red, green and blue coloration of the original, In a modification, the beam from the original 11, Fig. 2, is split by prisms 13X, 13Z and passes through filters 14X, 14Z to record directly on the surfaces 20X, 20Z. Colour correction of the colour separation records may be obtained either by applying the currents from one cell to control the degree of amplification of currents from other cells, Figs. 3-6 (not shown), or by controlling a shutter 53, Fig. 2, in one path in accordance with the illumination in the other by means of a sensitive cell 50. Cells 56A, 56 may modify the relationship between the colour correction and the light passing through 14X.
Patent GB-563658-A (GB)
Title: Improved production of articles of glass having reduced transparency and great refractive power
IPC: C03B11/08
Filed: 1943-01-28
Abstract: 563,658. Glass manufacture. AKTIEBOLAGET ORREFORS GLASBRUK. Jan. 28, 1943, No. 1498. Convention date, Feb. 2, 1942. [Class 56] Relates to a method of making a glass article, such as a shade for lighting, in which the surface of the glass is so patterned that objects close to the glass cannot be seen through it. According to the invention, molten glass is placed in a shallow mould having side members surrounding a bottom which is formed with projections or corrugated designs, pressing or rolling the glass to spread it in the mould, and then pressing or otherwise forming a design on the upper surface of the glass. Preferably, this design consists of projections or corrugations having a general direction which is different from those on the lower surface of the sheet or plate thus formed. If desired, the mould bottom or the hot glass may be strewn with powdered glass which melts and forms small beads on the glass article. Finally, the sheet or plate is heated until it is plastic and placed on or in a second mould, having a smooth bottom, onto which the softened glass sinks and takes the required shape.
Patent GB-157811-A (GB)
Title: Multicolour prints secure against photographic imitation, especially for securities
IPC: B44F1/12
Filed: 1921-01-10
Abstract: 157,811. Lacher, C. W. July 22, 1919, [Convention date]. Printing-processes.-Multi-colour prints, particularly banknotes and other securities, which are proof against photographic imitation are made by producing upon the sheets a ground of one colour and then printing on the ground a design in another colour having the same photographic actinity as the ground colour. The ground colour may be produced by printing or by colouring the sheets, and the design may be printed in a discharge colour. Examples of colours employed are given in the Specification. Specifications 16636/09, 21444/11, and 29491/12 are referred to. The Specification, as open to inspection under Sect. 91 (3) (a) also describes prints made by printing in exact register, a negative and a positive of the design in colours having the same photographic actinity. This subject-matter does not appear in the Specification as accepted.
Patent GB-1147745-A (GB)
Title: Shift-in head for automatic assembly lines
IPC: B23P21/00
Filed: 1967-01-11
Abstract: 1,147,745. Automatic assembly for force fits. VUMA, VYSKUMNY USTAV MECHANIZICIE A AUTOMATIZACIE. 11 Jan., 1967 [30 March, 1966], No. 1548/67. Heading F2S. A shift-in head for automatic assembly lines to provide for shifting-in one component part into another, e.g. a bicycle pedal plate structure into rubber blocks, comprises a guide body 1 which is provided with a shoot 12 for feeding a component part, Fig. 1, not shown, by gravity on to tiltable supports 2 mounted within the body 1 and which has pivoted thereto, at 9, at least one pair of two-arm levers 3 each pair of which are connected, at their upper ends, by a tension spring 11 to spread apart centring jams 4 which have guide recesses 5 and are carried at the lower ends of the levers 3 which are bevelled towards their lower ends, the two arm levers 3 being actuated by a yoke 6 which is connected to the piston-rod of a pneumatic, or hydraulic, cylinder 17, carries an axially adjustable punch 7, and has rollers 19 which are adapted to operate the two-arm levers 3. The guide body is attached to a column 16 by means of a pin 14 disposed in a sleeve 15 attached to a column 16. With the yoke 6 at its initial position as shown and with the punch 7 adjusted to lie the required distance above the level of the centres of the rollers 19, a component from the shoot 12 falls on to the tiltable supports 2 and the yoke 6, with the punch 7, starts to move downwards so that the rollers 19 move the two lever-arms 3 towards each other and the jams 4 are tightly clamped together. The punch 7 then pushes the component past the tiltable supports 2 so that its two prongs enter the guide recesses 5, which are bevelled for initial guiding, and are then pressed into the mating rubber blocks, not shown, which are clamped beneath the centring jams 4. When the component has penetrated half-way into the rubber blocks the rollers 19 meet tapered portions 10 of the two armlevers 3 so that the jams 4 can spread apart under the action of the spring 11 and allow the component and punch 7 to pass through the jams 4 as the component is pressed home fully into the two blocks. The yoke 6 then rises and the complete series of operations is repeated.
Patent GB-1490112-A (GB)
Title: Loading device for a large-bore firearm
IPC: F41A9/22
Filed: 1975-01-14
Abstract: 1490112 A device for supplying ammunition to a firearm BOFORS AB 14 Jan 1975 [15 Jan 1974] 1597/75 Heading F3C  A device for supplying ammunition to a firearm 1 comprises magazines 3, 4, Fig. 1, to be arranged one on each side of the firearm along with automatic loading means for transferring rounds from the magazines to the breech of the barrel, each magazine comprising a number of tubular containers 14, each having one or more rounds therein, in at least one revolver assembly 9, 10, 11 or 12 and extending substantially parallel to the axis of the bore of the barrel. Each revolver assembly is rotatably arranged so that each container 14 therein can be brought into a pre-determined feed-out position common for all the rounds in the containers. The automatic loading means comprises at least one loading car located rearwardly of the magazines and barrel and arranged to move in a direction normal to the axis by the bore of the barrel from a position behind a feed out position of one of the magazines to a ramming position in line with the axis of the bore. In an embodiment loading cars 20, 21 are provided. In operation the loading cars 20, 21 are aligned with the respective feed-out position 16, 17, 18 or 19 and the breech block 2 is open and empty. The operator then chooses the kind of ammunition desired and starts the loading cycle by actuating the control members (not shown), in which hydraulic motors 24, 40, Fig. 1 and 58, Fig. 2 and valves for the oil pressure for the longitudinal feed mechanisms are included. A container 14, Fig.1, is actuated to the feed-out position and a rammer head 43 of a ramming car 42 which is carried by the loading car 20, is then actuated so that it can grasp the flange of an outer positioned round and transfer it out of the container 14 and into the loading tube 31 of the loading car 20. An inner positioned round in the container 14 is moved to the outer position and the revolver 9 or 10 rotates so that another round is in the feed-out position. The round in the loading tube 31 is then aligned with the axis 15 and is moved longitudinally towards the breech 2. The rammer head 43 transfers the round into the breech and then returns, along with the loading tube 31. The loading car 20 then moves transversely to the feed-out position. Simultaneously a round is transferred to the loading car 21. The latter is moved to the ramming position when the round previously loaded into the firearm has been fired and its cartridge has been removed from the barrel 1. The loading continues thus, alternating until sufficient rounds have been fired, from the weapon. In a modification the containers are formed as shown in Fig. 7a so as to save space.
Patent GB-239769-A (GB)
Title: Improvements in supports for photographic copying apparatus
IPC: G03B27/56
Filed: 1925-01-19
Abstract: 239,769. Rogers, F. H., (Hoh & Hahne). Jan. 19, 1925. Enlarging, copying, and reducing.-The camera a and copyholder b are supported on a single beam girder d, preferably of reinforced lattice type, having a triangular cross-section, which is supported by springs f acting upon it in the vertical plane containing its axis. In the form shown, the springs rest on supports g having widely-spaced feet, and the girder carries vertical guide rods h working between rollers on these supports. The carriages k, m supporting the camera and copyholder have rollers n running upon the edges or the girder d. In a modification, the rollers which guide the rods h are replaced by two springs, connected one on each side of a rod depending from the apex edge of the girder, and anchored respectively to opposite sides of the support g. In a further modification, the single spring f is replaced by two springs, one on each side of the axis of the girder, their bases resting upon the support g, and their upper ends bearing against a transverse lever pivoted at its middle to the rod depending vertically from the apex edge of the girder.
Patent GB-1430731-A (GB)
Title: Hot gas engines
IPC: F01P3/22
Filed: 1974-01-14
Abstract: 1430731 Hot gas engines; compressing gases UNITED STATES GOVERNMENT OF 14 Jan 1974 [30 Jan 1973] 01736/74 Headings F1S and F1N [Also in Division A5] A hot gas engine comprises a temperature control heat pipe 18 located on the outer surface of the cylinder 12, the heat pipe containing a working fluid and an inert gas and being conductive over its entire length to conduct heat away from the hot end of the engine when an overtemperature condition is reached and non-conductive at acceptable operating temperatures. As shown a thermal storage container 33 is positioned around the heat source 43 and a temperature distribution heat pipe 19 is located radially outward from the heat source and inward from the thermal storage container and extends around the hot chamber to maintain a uniform temperature distribution around the hot chamber. The displacer 11 is supported and guided by a support in the form of a leaf-spring which is attached to the cylinder at its centre and to the displaces at its outer end portions. The engine working medium which may be helium, is compressed by a piston attached to the displacer piston 11. In a modification (not shown) a bellows seal is provided to seal off the crank-case from the engine cylinder Divisional Specifications 1430732, 1430733 and 1430734 are referred to.
Patent GB-572493-A (GB)
Title: Improvements in or relating to the lagging or insulation of surfaces
IPC: F16L59/12
Filed: 1944-01-31
Abstract: 572,493. Heat insulation. VERSIL, Ltd., and BINNS, C. E. Jan. 31, 1944, No. 1755. [Class 64 (ii)] [Also in Groups XXVIII and XXIX] A duct, conduit, tank or the like of rectangular cross section has its side walls 1 extended beyond the corners at 3 to form flanges which are drilled to receive the ends of rods 4 for retaining heat insulation 5 in position. On the other two sides, the insulation is retained by wire netting 9 which is pressed over the ends of rods 4 and held by nuts 8. Netting may also cover the top and bottom insulation, and the whole may be covered by cement 12. In place of the retaining rods, lacing wires may be used. In a modification, all the walls may have intermittent extensions to provide alternate flanges at right angles to each another, or the wall extension may be bent at an angle of 45‹ so that rods on two adjacent sides can be accommodated. In another modification, instead of extending the rods 4 to support netting 9, channels may be secured to the wall extensions, and their outer flanges may support metal or other sheets enclosing the heat insulation.
Patent GB-1514411-A (GB)
Title: Colour television signal demodulator circuit
IPC: H04N11/16
Filed: 1976-01-16
Abstract: 1514411 Colour television INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA SpA 16 Jan 1976 [17 Jan 1975] 01836/76 Heading H4F PAL chrominance signal demodulator comprises a PAL one-line-period-delay decoder 1, 2,3, 5, the R-Y chroma signal being fed to a pair of synchronous demodulators 6 and 7, Fig. 1, and the B-Y chroma signal to synchronous demodulators 8 and 9. With no phase error in the two phase quadrature subcarrier signals from subcarrier generator 11 (supplied by burst gate 4) which are fed to each pair of demodulators, the outputs of the demodulators of each pair are equal. If there is a phase error then the differences between the ouputs of the demodulators of each pair are used to control a phase displacement device 14 in the feedback loop of generator 11. The colour difference signals R-Y and B-Y are derived by adding 18 and 22 the outputs of each pair of demodulators. The phase error controlling signal is derived using peak detectors 20, 21, 24 and 25, adders 26 and 27 and differential amplifier 28. The circuit includes -45 degrees phase shifter 13, -90 degrees phase shifter 17, + 90 degrees phase shifter 15 and PAL switch 16. In a second embodiment, Fig. 2, two subcarrier generators 11 and 11<SP>1</SP> are used, the lower part of the circuit being substantially the same as the lower part of Fig. 1, and the operation of the upper part being the same as the lower part once the switched phase inverter (PAL switch) 16 has neutralized the periodic phase reversal of the signal R-Y.
Patent GB-343278-A (GB)
Title: Machine for sharpening saws
IPC: B23D63/12
Filed: 1930-01-20
Abstract: 343,278. Sharpening saws. LAURENT, L., Chemin du Goth, St. Junien, Haute Vienne, France. Jan. 20, 1930, No. 1927. [Class 60.] In a machine for sharpening saws in which the grinding-wheel is lifted and lowered, as the saw s is fed forward, by a cam n carried by a plate j reciprocated by a lever k, which also, through an adjustable push rod m, feeds the saw forward, the stroke of the lever k is adjustable in order to produce teeth of various spacings as shown in Fig. 3. The lever k is oscillated about a pivot l by a link k<3> pivoted thereto at k<4> and at its other end to a member k<6> adjustable in an arc-shaped member k<2> oscillatable, at adjustable speed, about a pivot k<7>. The forward position of the lever k is invariable, changes in its amplitude of oscillation taking place on the rearward movement; this is obtained by making the pivot k<4> in the forward position of the lever, the centre of the arc k<2>. The saw is held by a blade spring s<2>, whose tension is adjusted by a slider s<3>. Specification 305,535, [Class 60, Grinding or abrading &c.], is referred to.
Patent GB-966868-A (GB)
Title: Section joint
IPC: G09F13/04
Filed: 1961-01-17
Abstract: 966,868. Jointing; making electrical components. K. STEINER. Jan. 17, 1961 [Dec. 9, 1960], No. 1964/61. Headings B3A and B3V. A joint for drawn or rolled sections abutting end to end e.g. a joint between sections of a screen for fluorescent lamps, is characterized by at least one groove 2 extending longitudinally of the sections 1a, 1b and formed by two parallel ridges 3, and by a rod 4 placed in the groove and extending over the two abutting component sections, said rod having at least two nicks 5 engaged by corrugations 7 which are forced into the ridges 3 of both component sections. The nicks in the rod have one slope 6 which faces towards the centre of the rod approximately normal to the rod axis. A corrugation formed in the groove 2 bears against this slope and prevents the sections from pulling apart.
Patent GB-826692-A (GB)
Title: Liquid or gaseous fuel combustion chambers
Inventor: DAVIES FRANK
IPC: F23D14/00
Filed: 1957-01-18
Abstract: 826,692. Liquid fuel combustion chambers. CRADLEY BOILER CO. Ltd., and RUDLING (LIQUID FUEL) BURNERS Ltd. Jan. 9, 1958 [Jan. 18, 1957], No. 2020/57. Class 51 (1). A combustion chamber for liquid or gaseous fuel comprises a disc 13 with a refractory lining 14 and secured to the end wall 6 of a boiler smoke-box, which disc has a central aperture for a burner nozzle 15 surrounded by a primary air inlet 16, and a refractory lining 11, 19, 20 which defines a mixing zone 12 and a restricted throat 21 opening to a divergent outlet. Preheated secondary air is delivered into the zone 12 from a tapering annular chamber 8 formed by a conical member 7 secured to the end wall 6 and a cylindrical sleeve 5 concentrically mounted within the smoke box through spaced plates 9 which define tangential inlets 10. A sight hole 23 and ducts for ignition means extend through an air chest 17 on the exterior of the disc 13 which chest is connected to the chamber 8. A balanced flap valve 24 is associated with a tangential air inlet 25 formed in the wall of the sleeve 5 to control air admission to the chamber 8. The valve 24 and inlet 25 may be omitted and the sleeve 5 may be mounted within a sleeve 26 which defines an outer chamber 27 having a tangential inlet 28 and valve 29. Specification 815,909 is referred to.
Patent GB-1091821-A (GB)
Title: Underwater light assembly
IPC: F21S8/00
Filed: 1966-01-17
Abstract: 1,091,821. Underwater lamps. JACUZZI BROS. Inc. Jan. 17, 1966 [Feb. 5, 1965], No. 2047/66. Heading F4R. In an arrangement for providing underwater illumination in a swimming pool, a hollow tube is installed in the wall of the pool and extends from a location below the normal water level to a location on the deck surrounding the pool, the lower end of the tube being sealed by a lens and the upper end being fitted with a housing containing a sealed beam or other lamp. The tube may be straight and extend diagonally through the upper corner of the wall, or may be in two sections set at right angles with a plane mirror at the junction. The lamp housing projects above the surface of the deck and has a waterproof convex outer cover of poor heatconductive material and a spaced convex inner cover of rust-resistant metal provided with a porous plug. A hollow stem (Fig. 7, not shown) may extend upwardly from the centre of the cover and carry a downwardly facing concave reflector, so that a portion of the light originating from the lamp will pass up the stem and be dispersed by the reflector on to the surrounding surface of the deck.