baber/WOPTO huggingface dataset:
Patent GB-309965-A (GB)
Title: Improvements in or relating to television apparatus
IPC: H04N3/04
Filed: 1927-10-19
Abstract: 309,965. Baird, J. L., and Television, Ltd. Oct. 19, 1927. Television.-In a duplex television system a transmitter and a receiver at each station ure mechanically of a unitary character and are driven by a single motor 20. The motor rotates a disc 2 having two spiral sets 4, 6 of holes, lenses or mirrors which explore respectively an object 8 and a receiving-screen 14. According to modifications : the two spirals are in separate discs on the same shaft (Fig. 2, not shown); one portion of a single spiral explores the object whilst another portion explores the receiving-screen (Figs. 3 and 4, not shown). Specifications 265,640, 286,262 and 297,152 are referred to.
Patent GB-362042-A (GB)
Title: Improvements in or relating to lamps for vehicles
IPC: B60Q1/14
Filed: 1930-09-18
Abstract: 362,042. Headlamps. HUGHES, W., 8, Tweedale Street, Oldham. Sept. 18, 1930, No. 27862. [Class 75 (iv).] Lantern screens.-An antiglare screen is composed of a number of radially arranged, members each consisting of slats of celluloid, glass, or other translucent material hinged together in the manner of a folding screen and housed, when folded, in the rim of the lamp, as shown in upper half of Fig. 2. Coiled hinge springs urge the screens to extended position along radial rods 6 (lower half of Fig. 2) and they are drawn into folded position by cables or chains 10 running over peripheral pulleys 11 to a control member. The latter may consist of two grooved pulleys 15, 19, Fig. 9, each controlling half the screens and one being clutchable to the other by means of a quick pitch nut and screw 23, 22, a ratchet being provided to hold the pulleys in desired position. The cables 10 are arranged in two groups and each group either runs to a common drum, or is united in a common cable.
Patent GB-278623-A (GB)
Abstract: 278,623. White, A. E., (Hatfield-Crabbe Co.). May 19, 1927. Switches, mechanical, without quick action, controlling the motors actuating the pumps in systems of fluid-pressure jacks for motor vehicles are mounted on the valves a governing the passages to the various jacks. The bridge element 95 is shown in neutral position. Oil is forced into a jack or withdrawn therefrom according as the element 95 bridges one pair of contacts 96-97 or the other. The contacts have V-shaped recesses 100 adapted to receive similar contacts 101. Lugs 102 limit the movements of the element 95 and of the valve.
Patent GB-428452-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: F23D11/10
Filed: 1933-10-10
Abstract: 428,452. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Oct. 10, 1933, No. 27926. Convention date, Oct. 15, 1932. [Class 39 (i)] In a valve having a " regulating cathode " according to Specification 418,132, the source of electrons K is of the indirectheated type and the construction and arrangement of the grid electrodes are such that the effect of the field of the control grid G acting through the velocity regulating grid B on the density regulating grid D is 5 per cent or less, i.e. the grids acting as a triode have an amplification of at least 20. The field of the velocity regulating grid B acting through the density regulating grid D on the source of electrons K is not less than 10, i.e. those electrodes regarded as a triode have an amplification factor less than 10. The valve shown has also a screen grid SG, a suppressor grid TG, and a screening grid T arranged between the grids B, D so as to ensure independence of the functions of those grids. A filling of unspecified gas at a pressure of 10<-2> to 10<-4> mm. may be provided. Dimensions and voltages are given. The velocity regulating grid B may be arranged eccentrically with respect to the control grid G so that any reversal of electron movement about the " virtual cathode " surface is caused to occur asymmetrically and the formation of oscillations is prevented. The Specification as open to inspection under Sect. 91 comprises also (a) a valve in which the screening grid T is directly connected with the cathode ; and (b) a valve for use with magnetic fields in which the anode has annular slots. This subject-matter does not appear in the Specification as accepted.
Patent GB-773042-A (GB)
Title: Improvements in belt buckles
Inventor: WOOD HERBERT HOWARD
IPC: A44B11/24
Filed: 1954-09-29
Abstract: 773,042. Buckles. WALKER, Ltd., T. July 27, 1955 [Sept. 29, 1954], No. 28052/54. Class 43. A belt buckle is provided with a guide plate or part adapted to guide the free end of a belt, after the latter has been fastened, behind the opposite or fixed end of the belt. In one example a prong 1, Figs. 1 and 4, is hinged on an end bar 2 of an arched rectangular buckle frame 3, and a plate 5 with integral sleeve parts 4 hinged upon the buckle bar 2 at opposite sides of the prong hinge is formed with a slot 7 parallel with the bar 2 and has forwardly bent side lugs 6 at the ends of the slot. The outer portion 9 of the plate 5 is shaped to form a longitudinal edge 8 for the slot 7 and provide an outer forwardly directed toothed flange 10 with an outwardly directed trunnion 11 on each end. A clamping-plate 12 with an apertured lug 15 at each end is pivoted on the trunnions 11 so that it can be 'swung into the position shown in Fig. 4, whereby the fixed end of the belt is clamped against the toothed flange 10 in the usual manner. The free end 8 of the belt is brought beneath the sleeve hinges 4 and up through the slot 7, the portion of the plate 5 between the slot and the hinge portions 4 being shaped to provide a guide 17 with an edge 16. Fig. 6 shows a modification wherein a guide plate 20 formed with sleeve portions which are hinged upon the prong-carrying bar 2 of a buckle frame 3 is provided also with forwardly bent apertured lugs 24 within which the interned extremities of a U-shaped wire frame 26 are hinged. The non-adjustable end 13 of a belt 14 is secured to the middle bar 27 of the U-frame and the free end 8 of the belt, after fastening by the prong 1, is passed between the guide plate 20 and the secured non-adjustable end 13 on the bar 27.
Patent GB-1310194-A (GB)
Title: Hydraulic fluid actuated percussion tool
IPC: B25D9/12
Filed: 1971-06-16
Abstract: 1310194 Hydraulically actuated percussive tools ATLAS COPCO AB 16 June 1971 [16 June 1970] 28128/71 Heading B4C [Also in Division B3] An hydraulic fluid e.g. oil actuated percussive tool comprises a cylinder a hammer piston reciprocable in the cylinder and defining therewith two variable volume for receiving hydraulic fluid means for alternately connecting one or the one and the other of the chambers to a source of pressurized hydraulic fluid and to draw an accumulator converted to the one of the chambers and loaded by a spring and means for automatically loading the spring in proportion to the pressure of the hydraulic fluid supplied to the tool. In operation of the tool illustrated fluid supplied via conduit 43 (with the valve in the illustrated position) passes to the chamber 25 to urge the hammer piston 12 on its working stroke to apply an impact via an anvil 24 to a drill rod 19 which can be rotated by hydraulic motor 20 and which can receive flushing fluid via connection 23, and valve 42 is held in its illustrated position by fluid passing through conduit 59 and acting on surface 58. When the piston portion 14 passes the port of conduit 57 fluid passes from the chamber 25 to act on surface 55 of the valve 42 and force the valve 42 to the left thus connecting the supply conduit 43 to the chamber 34 to effect braking stopping and the return stroke of the piston and connecting the chamber 25 to drain via conduit 48. The valve is held in its leftmost position by fluid passing through conduit 61 and action on surface 60. During the braking of the piston on its working stroke excess fluid passes to the accumulator 38 and this fluid is returned to the chamber 37 during the return stroke. When the chamber 34 is connected to conduit 56 via a selected one of conduits 56a (the appropriate conduit 56a is selected by varying the position of a pin 63 thus the piston stroke can be varied), the valve 42 will be returned to its illustrated position and the chamber 25 will be connected to the supply conduit 43 to effect braking stopping and the working stroke of the piston. The accumulator 30 will store fluid during this reversal of the piston's movement. If the piston on its return stroke passes groove 25 its motion will be reversed by fluid trapped in chamber 25 and by an accumulator 32. On the working stroke over travel of the piston, due to a "no-load" condition or absence of the drill rod, will be cushioned by fluid trapped in the chamber 34 and slight leakage past piston portion 13. In an alternative embodiment (Fig. 5 not shown) fluid is constantly fed to one chamber (34) and a second chamber (25) is alternately connected by means of slide valve (79) to a supply conduit (43) and to exhaust. An accumulator (30) operable in the manner of accumulator 30 of the embodiment of Fig. 4 is connected to the second chamber.
Patent GB-1201462-A (GB)
Title: Port plates for hydraulic reciprocating pumps and motors
Inventor: BOTTOMS HARRY SIMISTER
IPC: B62D61/00
Filed: 1966-06-23
Abstract: 1,201,462. Reciprocating pumps and motors. JOSEPH LUCAS (INDUSTRIES) Ltd. Sept. 13, 1967 [June 23, 1966], No.28146/66. Heading F1A. The face of a valve plate 18 engaged by a rotating cylinder block is provided with straight grooves 23 in which are inserted bearing and sealing strips 22 to form a closed regular figure surrounding the ports and symmetrical with respect to the axis. A ring inset 21 and substantially radial inserts 25 are also provided. The inserts may be of vitreous carbon.
Patent GB-1134219-A (GB)
Title: Multi-unit printing machine drive control
IPC: B41F13/00
Filed: 1966-06-23
Abstract: 1,134,219. Automatic synchronizing control systems. O. M. C. S. A. OFFICINE MECCANICHE CIGARDI S.p.A. June 23, 1966 [June 24, 1965], No.28172/66. Heading G3R. In a multi-unit printing machine as described in Specification 905, 637, having an electric motor 15 geared to each cylinder 13 and a phasecontrol system including photo-cells 28 to ensure the precise phase relationship between the several cylinders, each motor is now coupled to a disc 30 having four position-indicating apertures 31 through which light passes from source 27 to cell 28. This increases the number of signals from the photo-cell per revolution of the motor, which is also coupled to flywheel 26 for smoothing speed variations. The signals from the several units are compared in phase and the error is integrated, the motors being controlled thereby to maintain the desired positional relationship between the cylinders. Each motor is coupled to a tachometer generator 22 and synchronizing machine 23 for control operation as described in the prior Specification.
Patent GB-731927-A (GB)
Title: Yielding pit-prop
IPC: E21D15/38
Filed: 1951-11-30
Abstract: 731,927. Pit props. RITCHIE, C. March 2, 1953 [Nov. 30, 1951], No. 28175/51. Addition to 711,603. Class 20 (2). In a telescopic pit prop providing mechanical and fluid-pressure mine roof support adapted to operate separately or together as described in the parent Specification, the mechanical means comprises laminae 13 of nearly the same length as the prop and spaced from one another by friction parts 19 adapted to be compressed together to adjust the yieldability of the prop by a lock comprising an eccentric 24 operated by a lever 24a on one side and an adjusting screw 22 on the other. The laminae 13 are contained between the flanges of 'the I-section upper prop part 11, pass round a bolt 14 at the lower end of the upper prop part 11 and their ends are contained in a cavity of the prop head 12. Intermediate pieces 15 and a bolt 16 maintain the laminae in spaced position round the bolt 14. Fluid-pressure operation comprises piston 26 on the upper prop member fitting the interior of the lower prop member and controlled by inlet and outlet valves 29 and release valve 30.
Patent GB-759116-A (GB)
Title: Improvements in rotary harrows
IPC: A01B33/10
Filed: 1954-09-30
Abstract: 759,116. Rotary harrows. MASCHINENFABRIK FAHR AKT.-GES. Sept. 30, 1954 [Oct. 5, 1953; March 19, 1954], No. 28192/54. Class 6 (1). A rotary harrow which is driven from the power take-off of a tractor comprises rhomboidal blades mounted on a transverse shaft so as to be angularly offset with respect to eath other, the ends of the blades being bent to form inclined surfaces projecting on opposite sides of the blades. The device may be attached to the tractor by means of a three-point linkage consisting of links 2 and a member 3, the links 2 being connected to the lifting arm 28 of a lifting mechanism on the tractor. The drive of the bladed shaft is effected from the power take-off 13 of the tractor through a universallyjointed shaft 14 and a further shaft journalled in the supporting arm 7. The blades are covered by a sheet metal guard 18 carrying a row of teeth 19 at its edge, and their depth of operation may be regulated by means of the applied weights 20. The appliance carries track erasers 17. The device may be attached to the draw-bar of the tractor by means of an articulated connection such as a Hooke's joint.
Patent GB-538184-A (GB)
Title: Improvements in filtration, dialysis and electrolysis
IPC: C25B13/08
Filed: 1939-10-19
Abstract: 538,184. Vinyl polymerization products; filtration, dialysis, and electrolysis. CARBIDE AND CARBON CHEMICALS CORPORATION Oct. 19, 1939, No. 28196. Convention date, Nov. 2, 1938. [Class 2 (iii)] [Also in Groups I, III and XXXVI] In a process of filtration, dialysis or electrolysis, a fluid is caused to pass through a filtering or dialysing medium, or an anode bag, composed essentially of yarns or threads comprising filaments or staple fibres of a vinyl resin obtained by the conjoint polymerization of a vinyl halide with a vinyl ester of an aliphatic acid, which contains predominantly vinyl halide in the polymer and has an average macromolecular weight of at least 10,000, the yarns or threads being stretched prior to incorporation in the medium or bag. The resin may contain from 80 to 95 per cent. by weight of vinyl halide, and may consist of a copolymer of vinyl chloride and 'vinyl acetate containing 85 to 90 per cent. of vinyl chloride. The resin is dispersed in a volatile solvent and spun into filaments which may then be doubled or 'twisted to form the yarn or thread. The stretch imparted to the yarn may be up to about 200 per cent. and may be imparted in stages, the yarn being surface-wetted during the process. The tendency of the stretched yarn to contract may be controlled by submitting the yarn under tension to ageing or to a moderate heat. The medium may be composed of fabric woven or knitted from the yarn, or the medium may consist of matted filaments, yarns or threads or staple fibres formed therefrom, which fibres may be admixed with other known natural or artificial fibres. When the woven material is to be used as a dialysing medium or to form an anode bag, it is shrunk, to reduce the porosity, by controlled exposure to increased temperature. The matted medium may be stiffened by heating until a partial fusion of the staple fibres takes place, and may be supported on one or both sides, or formed into a laminated material, with layers of a fabric woven from the yarns or threads. Specifications 491,218, [Group I], 518,555 and 518,710 are referred to. According to the Specification as open to inspection under Sect. 91, the medium or bag may be formed from any vinyl resin having an average macromolecular weight of at least 10,000, and Specification 406,338 is referred to. This subject-matter does not appear in the Specification as accepted.
Patent GB-533231-A (GB)
Title: Means for regulating the flow of a viscous material from a receptable over a surfacepassing thereunder
IPC: B41F31/20
Filed: 1939-10-19
Abstract: 533,231. Inking apparatus; coating apparatus. SAMPSON, J. J. Oct. 19, 1939, No. 28233. [Class 100 (ii)] [Also in Group III] In apparatus for spreading viscous material 1 such as printers' ink, paint or varnish over a surface, in which the material passes from a trough such as 6 through a slit between the wall of the trough and a thin adjustable plate 7, the adjustment of the plate is effected by adjusting the air pressure in a flexible tube 12 mounted in a casing 2 and bearing against a series of side by side keys having portions, e.g. shanks 11 engaging the plate. In modifications the keys are pivoted instead of being slidable, the pivots in one construction being cylindrical pins and in another construction being in the form of ball and socket joints.
Patent GB-863165-A (GB)
Title: Microwave frequency discriminators
Inventor: MARSH STANLEY BRUCE
IPC: H03D9/04
Filed: 1957-09-06
Abstract: 863,165. Frequency discriminators. JAMES SCOTT & CO. (ELECTRICAL ENGINEERS) Ltd. Aug. 15, 1958 [Sept. 6, 1957], No. 28284/57. Class 40(5) [Also in Group XXXVI] A microwave frequency discriminator bridge comprises an input arm 7, an arm terminating in a cavity resonator 2, and an arm having an impedance adjustable by an attenuator 5 and movable short circuit 4, so that an output is obtained from an arm 6 only when the input frequency differs from that of the resonator 2 and is of a magnitude and phase sense depending on the magnitude and sense of the frequency error. This output is then detected in a phase sensitive detector 11 with reference to a reference signal derived from the input wave and phase shifted at 14 through 90 degrees, as shown, the input arm 7 may be coupled to the output and balance arms and to the reference channel 13 by directional couplers X. Further, both waves, prior to the phase sensitive detector 11, may be frequency changed in balanced mixers 9A, 15A by an oscillation fed through directional couplers X from a local oscillator 17, buffer amplifiers 10A, 16A enabling low impedance coupling into the phase sensitive detector 11. The output is insensitive to amplitude variations of the generator 8, and may be used for automatic frequency control of it. Detectors 10B, 16B coupled to the outputs of I.F. amplifiers 10, 16 measure respectively the magnitude of noise produced fluctuations of frequency, and amplitude modulation of the generator 8. In a modification the output of I.F. amplifier 16 may be shifted through 90 degrees and compared in a second phase sensitive detector with the output of I.F. amplifier 10 to give a more sensitive measurement of amplitude modulation of the original wave input to the microwave bridge.
Patent GB-485462-A (GB)
Title: Improvements in and relating to means for fastening tubes, electrical conductors and the like to surfaces of various thicknesses
IPC: F16L3/127
Filed: 1936-10-19
Abstract: 485,462. Supporting cables, pipes, and the like. DEHNE, O., and VORBRUGGEN, X. Oct. 19, 1936, No. 28453. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 19, 1937.] [Class 36] [Also in Group XXV] In a clip for fastening pipes, electric conductors, and the like to a supporting-surface, of the kind comprising a band of resilient material which encloses or partly encloses the pipe or conductor and has its two ends bent to form extending arms which are adapted to be inserted in a hole in the supporting-surface and tend to spring apart therein, the ends of the arms f, f<1>, Fig. 1, are provided with small outwardly extending projections which engage behind the rear edge of the hole and are so shaped, and situated at such distance apart, that the clip e can be attached and detached respectively by a simple pushing and pulling action. The outward extensions may have inwardly directed prolongations which facilitate the introduction of the clip into the hole. The yoke of the clip may be extended to embrace two or more conductors or, as shown in Fig. 23, the clip K may be bent into a double loop L, L<1>, to fasten two adjacent conductors. Fig. 20 shows a clip wherein the band portion E is made extensible by means of angular cut-out portions C. The resiliency of the arms may be increased by inserting between their open ends a helical spring, leaf-spring, or a piece of rubber. To enable the clips to be fastened within blind holes, the bottom of the hole may be widened by means of a special tool in order to engage the outwardly extending ends of the clip, or a bush may be either driven or screwed into the hole so that its bottom edge can engage the ends of the clip. For the attachment of a clip to a stone or brick wall a hollow plug T, Fig. 30, with an inturned edge at its open end is driven into the wall. A clip may be adapted to receive pipes or cables of different sizes by the provision of removable insulating liners or bushes which are in the form of two half-rings disposed between the conductor and the band of the clip.
Patent GB-856172-A (GB)
Title: Improvements in or relating to filters
Inventor: SEATON GEORGE BENJAMIN
IPC: B01D46/24
Filed: 1958-09-04
Abstract: 856,172. Filters. AUTOMOTIVE PRODUCTS CO. Ltd. Aug. 5, 1959 [Sept. 4, 1958], No. 28471/58. Class 46. [Also in Group XXVIII] A strip of e.g. porous paper-like material of predetermined length is folded longitudinally about its centre line and is then pleated transversely to form pleats which taper from the two longitudinal edges to the fold 12, Fig. 2, so that the strip is caused to assume a curved shape with the longitudinal edges 11 at the inner side of the curve. It is then secured, with the inner edges spaced apart, around holes 17 in a tube 14, and the ends of the strip are joined together so that the strip forms an annulus about the tube. Several such annuli may surround the tube, in parallel. In Fig. 6 the strip is of greater length and is wound helically around a helical series of holes, the ends of the resulting helical space being closed.
Patent GB-1463224-A (GB)
Title: Process for preparing pure phosphoric acid
IPC: C01B25/234
Filed: 1975-07-07
Abstract: 1463224 Preparation of pure phosphoric acid TOYO SODA MFG CO Ltd 7 July 1975 [9 July 1974] 28518/75 Heading C1A Substantially pure phosphoric acid is obtained by subjecting crude aqueous phosphoric acid solutions formed by H 2 SO 4  or HCl treatment of phosphate rock to organic solvent extraction, adding a fluorine compound to the extracted aqueous phosphoric acid solution so formed in an amount sufficient to produce a Fi : Si atomic ratio of 4 or more, concentrating the mixture under reduced pressure and contacting the concentrated phosphoric acid solution with steam and/or hot air. The extracted acid solution preferably contains 15-40 wt. per cent of phosphoric acid(as P 2 O 5 ), which may be concentrated at a reduced pressure of 110 mm. Hg or less to yield a solution preferably containing 54-69 wt. per cent acid calculated as P 2 O 5 . Contacting the acid with steam and/or hot air may conveniently be conducted in a bubble cap tower, a sieve tray tower or a packed tower. Suitable fluorine compounds, small portions of which may be added to the concentrated acid solution issuing from the evaporator and prior to the steam/hot air treatment, are HF and salts thereof: NH 4 F and NaF are exemplified.