baber/WOPTO huggingface dataset:
Patent GB-675439-A (GB)
Title: Improvements in or relating to phase modulators for electric carrier waves
Inventor: HEATON-ARMSTRONG LOUIS JOHN
IPC: H03C3/08
Filed: 1950-07-12
Abstract: 675,439. Phase modulation. STANDARD TELEPHONES & CABLES, Ltd. July 12, 1950, No. 17455/50. Class 40 (v). A phase modulator, of the kind in which phase-shifted versions of the carrier wave are amplitude-modulated in opposed senses by the signal and then re-combined, employs a pair of principal modulator valves 1, 2 and a pair of auxiliary modulator valves 22, 23 with the object of securing linear relation between carrier phase-shift and signal voltage. The carrier is applied at terminal 6 to the grids of both pairs of valves, the lead to valve 1 including a phaseretarding coil 7 and the lead to valve 2 a phaseadvancing condenser 8. The leads to valves 22, 23 include coupling capacities 28, 29 large enough to avoid substantial phase shift. The modulating signal is applied through a transformer 15 in push-pull to the grids of both valve pairs. The valves 1, 2 are so biased that they operate as linear amplitude modulators and their combined anode output is fed to one section of a tapped primary coil 3, the secondary of which is connected to output terminals 16, 17. The other section of the coil 3 is connected to the anodes of both auxiliary valves 22, 23, the grids of which are biased to near cut-off so that the valves are non-effective except when substantial positive signal voltages are applied from the transformer 15. Thus for signal peaks of one polarity, the phase-shifted wave at the output terminals 16, 17 resulting from the combined output from the valves 1, 2 is given a supplementary phase shift by the output from valve 22, and the valve 23 is ineffective. For peaks of the other polarity, the supplementary phase shift is provided by the valve 23. Bias adjustments by the cathode resistors 20, 21, 25, 27 enable modulation distortion to be substantially eliminated. The triode valves shown are preferably replaced by pentodes.
Patent GB-698985-A (GB)
Title: Improvements relating to aerial systems
Inventor: CROWLEY-MILLING MICHAEL CROWLE
IPC: H01P5/04
Filed: 1951-07-24
Abstract: 698,985. Aerial coupling arrangements. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 30, 1952 [July 24, 1951], No. 17527/51. Classes 40 (v) and 40 (vii). In a radio aerial comprising a primary element fed from a transmission line and associated with a reflector or a lens for producing a desired directivity pattern, the production of standing waves in the transmission line by reflection of energy from the reflector or lens back into the transmission line is reduced by the provision of a further length of transmission line producing reflections which are in anti-phase with those from the lens or reflector. The aerial comprises a " cheese " reflector 1 associated with a wave-guide horn 3 coupled to the transmitter by means of a wave-guide 4. A length of auxiliary wave-guide 5, terminated by an adjustable reflecting plunger 7 is coupled by means of a directional coupler 6, incorporating a matched termination 8 to the waveguide 4, the length of the guide 5 and the coupling between the guides 4 and 3 being so chosen that the energy reflected from the plunger 7 cancels that reflected from the reflector 1 back into the wave-guide 4. Where it is difficult to achieve exactly the desired coupling factor between the guides 4 and 5, excessive coupling may be provided and this compensated for by the insertion of an attenuator into the wave-guide 5.
Patent GB-607293-A (GB)
Title: Improved device for coupling together tractors and trailers
IPC: B62D13/00
Filed: 1945-07-10
Abstract: 607,293. Articulated vehicles; couplings. BLANCHARD, P. F. E. July 10, 1945, No. 17571. [Classes 79 (iii) and 79 (v)] A coupling device for a tractor and trailer comprises a system of two crossed bars pivotally secured to the frames of the tractor and trailer by cardan joints so that when turning, the fixed front axle of the towed vehicle automatically follows the turn and the extension of its axis meets the extension of the rear axle at the turning centre, the trailer rear wheels being steered positively by the connecting cross-bars. Fig. 1 shows a tractor 1 with a front axle 2 steered in a known manner and a fixed rear axle 7. Coupled to the tractor is a trailer 3 with a fixed front axle 6 and steerable rear wheels. Coupling is effected by means of two crossed bars 4 and 5, Fig. 2, the extremities a, b, c and d of which have cardan joints. In rounding a bend the front axle 6 of the trailer steers automatically by virtue of the relative movement of the two vehicles, whereas the steerable rear wheels mounted on king pins 9 and 10 and joined by track rod 11 are steered positively by a rod 12 whose one end is coupled to a steering arm 13 for the rear wheels and whose other end is coupled to another steering arm 14 rigid with the bar 4 at d. The rod 12 may be duplicated on the other side. The ends a, b, c and d are secured in cardon joints 22, 23 Fig. 3, secured respectively to gussets 18 and 19 which are in turn fixed on a horizontal bar 17 attached to the tractor or trailer.
Patent GB-684985-A (GB)
Title: Improvements in or relating to wall ties and a method of manufacture thereof
Inventor: PARTRIDGE GILBERT RAYMOND
IPC: E04B1/41
Filed: 1950-07-14
Abstract: 684,985. Wall ties. PARTRIDGE & CO. (OLD HILL), Ltd., E. Oct. 15, 1951 [July 14, 1950], No. 17635/50. Class 20(iv) [Also in Group XXII] A wall tie, for tying together the two walls of a cavity wall comprises a metal strip 1, pressed out end parts 2, 4 providing keying with the mortar between courses of bricks, and one or more, intermediate pressed up parts 3 providing an aperture, or apertures, to drain away condensation water from the top face of the tie. A central depression may be found round the intermediate aperture or apertures, to assist in drainage. Alternative constructions are shown in Figs. 4 and 5. The ties are formed by passing metal strip between rotary shears and punches, all the metal displacements in each tie being effected in a single pass.
Patent GB-129987-A (GB)
Title: Improvements in Vise.
Inventor: SEYMOUR HAROLD FREEMAN
IPC: B25B1/10
Filed: 1919-07-14
Abstract: 129,987. Seymour, H. F. Oct. 11, 1917, [Convention date]. Vices.-The jaws and the guide-shank are cast or formed hollow of cast iron, and the inner and outer surfaces are malleablized. The jaws A, B and the shank G of the parallel vice shown are cast hollow as at A<1>, B<1>, the screw C and nut E being made from steel in the usual manner. The dotted lines are intended to show the skin of malleable iron, produced on the inner and outer surfaces, by ordinary malleablizing processes after casting.
Patent GB-367275-A (GB)
Title: A till for changing treasury notes
IPC: G07D1/08
Filed: 1931-06-18
Abstract: 367,275. Money-delivering apparatus ; tills. JENNINGS, A. E., 158, Bath Road, Hounslow, London. June 18, 1931, No. 17660. [Class 116.] In note &c. changing apparatus of the kind in which a rotary member 9, Figs. 1, 2 and 3, carrying compartments 14, 12, is rotated upon operation of a lever 17, to discharge money from a compartment 14 and to render inaccessible the corresponding compartment 12 into which the note &c. to be changed has been previously inserted, the compartments 14 are brought in succession above an open shoot 5, passing behind the carrier to a receptacle 7. The carrier member 9 is mounted within a casing 1 having a glass window 13 permitting inspection of the note &c. compartments 12, which are formed by axial vanes 10 disposed on one side of the carrier, on the other side of which shorter vanes 11, form, in conjunction with a stationary member 2, the compartments 14. Slots 15, 16 permit charging of the chambers 14 and 12 respectively, whilst the device is rotated by a ratchet-and-pawl device 18, 21, the lever 17 being returned by a spring 20. A locking device may be provided to prevent rotation of the apparatus when all the chambers 14 have been emptied. The device may be employed as a ticket-delivering apparatus, tickets and change being delivered from the compartments 14 in exchange for a note.
Patent GB-439814-A (GB)
Title: Improvements in centrifugal apparatus for separating dust or other solid particles from air and gases
IPC: B04C1/00
Filed: 1934-06-15
Abstract: 439,814. Centrifugal dust &c. separators. CHELTNAM, C. H. W., 188, Adelaide Road, Brockley, London. June 15, 1934, No. 17730. [Class 23] In a centrifugal separator of the kind comprising a separating chamber 1 of circular or scroll-shaped cross section into which the dust-laden air is forced tangentially, and from which the cleaner portion of the air passes tangentially through a port in a central pipe 3, while the remaining air containing the dust is shunted to a small cyclonic separator and precipitator, baffles 15 are arranged in the chamber to interrupt the formation of vortex rings in the air. The baffles may be in the form of one or more rings adjacent the end walls of the chamber, and the outlet port 5 in the pipe 3 may be controlled by adjustable shutters 6. Curved blades may be arranged in the pipe 3 to impart axial motion to the air. The dust passes through a port 7 into a chamber 8, from which it passes to a pipe 9 to a separator 10, 11. The clean air returns from the latter by a pipe 12 to the outlet end of the pipe 3 which is connected to a fan 4. Specifications 406,036 and 433,647 are referred to.
Patent GB-884111-A (GB)
Title: Improvements in or relating to bobbin holders
IPC: D01H1/18
Filed: 1960-05-19
Abstract: 884,111. Bobbin-holders: creels. MASCHINENFABRIK BENNINGER A. G. May 19, 1960 [May 21, 1959], No. 17741/60. Class 120(2) In a bobbin-holder adapted to receive pirns of any type or wall thickness, the peg in which the pirn is hung is spring-pressed against an abutment, or the abutment is spring-pressed against the peg, to provide a nip whereby the rear end of the pirn is releasably clamped between the peg and the abutment. In Fig. 3, peg 7 is secured to a member 6 encircled by a spring 8 acting between a pin 9 on member 6 and a support 5, so that a cylindrical or conical pirn is gripped between the peg and support. In Fig. 4, the peg is carried by a spring-member 20 bolted to a U-shaped support, and the pirn is gripped between the lower edge of the support and the peg. In Fig. 5, the peg is constituted as a spring-member 26 in a support 27. The pegs may be arranged on a creel as at 4 in Fig. 1, yarn-guides 3 being provided.
Patent GB-456014-A (GB)
Title: An improved fire extinguisher
IPC: A62C13/00
Filed: 1935-06-20
Abstract: 456,014. Fire-extinguishers; pressurerelieving devices. BERNHEIM, C., 127, Faubourg Poissonniere, Paris. June 20, 1935, No. 17781. Convention date, June 20, 1934. [Class 47 (ii)] [See also Group XXIX] A fire-extinguisher of the pressure type comprises a seamless body 1 with end pieces 3, 4 secured in recesses 5 preferably by welding. A bushing 6 is provided with a conical thread to receive a valve body 7, which is fitted with a nozzle 13 and a dip tube 14 the lower endof which is cut away at an angle. A screw threaded valve spindle 8 has a recess 21, Fig. 3, at its lower end into which is sprung the flanged shank 22 of a needle 10 of hard metal, such as German silver, so that the needle is freely rotatable with respect to the spindle. The upper end piece 4 is fitted with a pressure gauge 15, a filling plug, and a pressure-relieving device, Fig. 4, comprising a foil or lead disc 24 adapted to be ruptured by a point 25 and a leather flap valve 27 normally seated against a flat seating by a spring 28. A split protective cap 18 is pressed on to the upper end of the extinguisher, and a handle 17 is fitted at the lower end. The Specification as open to inspection under Sect. 91 states that the extinguisher may be charged with a mixture of methyl bromide with carbon-dioxide, air, or other compressed gas, and may be supported in a bracket comprising a vertical strip, a support for the lower end of the extinguisher, and spring clips. This subject-matter does not appear in the Specification as accepted.
Patent GB-517066-A (GB)
Title: Means for playing an indoor table game of skill
IPC: A63F7/06
Filed: 1938-06-15
Abstract: 517,066. Table games. LOBB, J. B. June 15, 1938, No. 17783. [Class 132 (ii)] Apparatus for playing a game of skill comprises a rotatable disc having pairs of radially arranged apertures, the inner ones 33b being elliptical in shape and holding targets 42 for missiles 45 released from a stationary magazine 15. The outer apertures 33a have spring-pressed projectors 34 which are held by the bent ends of the spring-controlled targets and which when released by a missile are adapted to project a ball 44 from its position of rest on the aperture. The missiles, e.g., glass balls, are released from the magazine by spring-pressed sliding stops 17, which are connected by guided cables 18 and hooks 20 to slides 22. The slides are actuated by a trigger 28 having a projection 30, Fig. 4, adapted to engage a flap 26 on the slide. The slide moves in inclined guides and slips past, the projection 30 when depressed and then returns to allow the wire 'stop 17 to reclose the magazine. The balls falling on'the platform are returned to the players through openings 11, Fig 1, in the sides of the case. Semi-circular sloping platforms 46 return the balls beneath the table through openings 45.
Patent GB-571081-A (GB)
Title: Improvements in and relating to electric current limiting fuses
IPC: H01H85/18
Filed: 1943-10-28
Abstract: 571,081. Fusible cut-outs. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 28, 1943, No. 17784. Convention date, Oct. 31, 1942. [Class 38 (i)] The fusible element of a high-voltage fuse surrounded by an inert granular material, passes through zones in which the granular material is of different grain size in order that the sudden reduction of current due to the action of the fuse is modified and consequential voltage surges controlled. The fuse element 16 may be wound on a ribbed core 13 and the surrounding space'within the casing 10 is divided by radial partitions 20 so that coarse sand or quartz granules 21 and powder 22 are in contact with successive lengths of the element 16. Portions of the fuse are enclosed in ceramic beads 17 to prevent heat radiation and localize the initial fusing. When the whole fuse melts, the coarse material 21 forms a continuous fused tube, while the fine material 22 fuses into globules, the alternate zones producing a stepped voltage gradient along the discharge path and preventing the sudden increase of resistance that would produce a voltage surge. In alternative constructions, the two grades of filling material are separated by transverse partitions by passing the fuse through several separate tubes as described in Specification 499,254. Specification 528,629 also is referred to.
Patent GB-458311-A (GB)
Title: Improvements in or relating to shock absorbers or vibration dampers
IPC: F16F9/46
Filed: 1935-06-21
Abstract: 458,311. Shock - absorbers. TECALEMIT, Ltd., and CHALMERS, R. A., Great West Road, Brentford, Middlesex. June 21, 1935, No. 17835. [Class 108 (iii)] During both expansior and contraction of a shock absorber, particularly for vehicles, fluid is displaced by reciprocatory means from an inner chamber into an outer chamber and always passes in the same direc, tion through one or more restricting passages dis posed at that end of the inner chamber towards which the reciprocatory means moves when the shock absorber is expanding the fluid flowing in a closed circuit. As shown the shock. absorber comprises concen. tric cylinders 1, 5, an apertured piston 13 carrying non-return valves 23, 24 adapted to reciprocate in the inner cylinder 5, and a member 25 fixed in the upper end of the cylinder 5 and containing fluid-restrict. ing passages 32, 33 commu. nicating through an annular groove 34 with ports 35, 36 in the cylinder 5. In operation, on movement of the piston and piston-rod 15 in either direction liquid is forced through the passages 32, 33, groove 34, and ports 35, 36 to the annular space 12, and on upward movement of the piston liquid is also sucked in from the space 12 through a non-return valve 10 in a cap 2 closing the lower ends of the cylinders. Leakage of liquid from the upper end of the cylinder 5 is prevented by a gland 50 held in position between a scraper ring 30 and a washer 29 against which bears the upper end of a spring 28. The spring may also act on a washer 42 in contact with a valve-pin 38 which normally closes a port 40 but which opens against the action of the spring to prevent excess pressure in the shock-absorber. To prevent aeration of the liquid leaving the cylinder 5 a tube 43 fixed to the cylinder above the ports 35, 36 directs the liquid to the bottom of the space 12. Alternatively the tube may be replaced by two open-ended pipes. As shown, the cross-sectional area of the piston-rod 15 is equal to half that of the bore of the cylinder 5, so that equal quantities of liquid flow through the passages 32, 33 on equal up and down strokes of the piston. By varying the crosssectional area of the rod, the quantities of liquid may be varied. To vary the resistance interchangeable members 25 having passages 32, 33 of different diameters may be used or the valves 23, 24 may be loaded by adjustable springs or by springs of varying strengths. In another construction the fluid-restricting passages are replaced by ports controlled by spring-pressed valves. Specification 436,845 is referred to.
Patent GB-1217589-A (GB)
Title: Nut drivers
Inventor: JAULMES ERIC
IPC: B60B31/02
Filed: 1968-04-16
Abstract: 1,217,589. Nut-runners. ATELIERS DE LA MOTOBECANE. 16 April, 1968 [17 April, 1967], No. 17903/68. Heading B3N. A spoke nut tightener, which may form one head of a multi-head machine, comprises an electric or fluid-pressure motor 16 which drives the output spindle 11, and a helically grooved piston 31 which provides a limited rotation of the complete tightener, so as to produce an additional torque to the nut. The vane type air motor 16 drives spindle 11 through an epicyclic reduction train 17, and is located in a piston 10 which is fed axially against a spring 13. Piston 31 is spring urged upwardly on rods 32, and is moved against the springs by fluid pressure which is supplied at 43. The nut is tightened by rotating motor 16. Air is supplied at 43, whilst air is still being applied to the motor, and the complete assembly rotates a limited amount due to the engagement of ball 39 with groove 37.
Patent GB-827825-A (GB)
Title: Iron recovery process
Filed: 1958-06-04
Abstract: A process for the production of high grade iron concentrate for direct melting comprises reducing iron ores in the presence of carbonaceous material at temperatures below the fusion point of iron, grinding and separating the product into fractions, the ground product being subjected to a gravity separation process while in the magnetized condition.  A separation of the ground material may be made by magnetic separation and the product, while still magnetized treated on a concentrating table, a jig, or a hydraulic classifier. A further magnetic separation may be performed after the gravity separation step.  The final material may contain over 90% iron with a silica content of not more than 3% and may be added directly to a steel melting furnace.  A lower grade concentrate may also be obtained suitable as a raw material for a blast furnace process.
Patent GB-1379152-A (GB)
Title: Rotary cutter for excavation especially for use with raise boring  and tunnel boring machines  and tunnel boring machines
IPC: E21B10/52
Filed: 1972-04-18
Abstract: 1379152 Roller cutters KENNAMETAL Inc 18 April 1972 17905/72 Heading E1F A rolling cutter for the cutting means of a tunnelling machine has a 10 provided with spaced bearing 16 confined between end members 12 that are fixed to the shaft and a rotary cutting member 22 surrounding the shaft and disposed between the end members and supported on the bearings. The cutting member 22 is generally cylindrical and has an outwardly projecting annular 24 in the axially central region of the member. Secured in the rib are two groups of hard metal inserts. The inserts 26 of the first group are located in the axially central region of the rib and the inserts 28 of the second group, which inserts are smaller than those of the first group, are located in the sides of the rib being grouped about the first inserts. The outer ends of the inserts 28 conform with the surrounding surfaces of the rib. Preferably the inserts are rod like, are cemented in correspondingly sectioned bores in the rib, and are formed of sintered tungsten carbide. The rib is V-shaped in section. The axes of the bores are in planes perpendicular to the shaft. The inserts 28 may have rounded outer ends.
Patent GB-792729-A (GB)
Title: Improvements in and relating to computer storage systems
Inventor: JACOBS ERIC WILLIAM
IPC: G11B5/58
Filed: 1955-06-22
Abstract: 792,729. Electric digital-data-storage apparatus. ENGLISH ELECTRIC CO., Ltd. June 22, 1956 [June 22, 1955], No. 18026/55. Class 106 (1). [Also in Group XXXVIII] A data storage system comprising a rotating magnetic storage drum and a reading and/or recording head unit has an adjustment device to determine the relative position of the head unit and the drum and means therein to compensate for thermal expansion and so maintain the reading and/or recording heads at a constant distance from the drum surface. The arrangement is applicable to the head unit described in Specification 790,230, [Group XXXVIII]. A magretic drum 10, Fig. 1, having a vertical axis O, has a reading and/or recording head unit 11 of which N represents a nose, in association therewith. A member 12 of part-cylindrical form rotatable about a vertical axis R carries a part-cylindrical mounting 13 for the head unit 11, the mounting 13 being rotatable about a vertical axis Q in the member 12. Coarse adjustment of the head unit 11 is obtained by rotation of the member 12 about the axis R and, by means of the vernier screw arrangement 14, of the mounting 13 about the axis Q. A fine adjustment of the position of the nose N may then be made by rotation of the head unit 11 about its vertical axis P. To compensate for the reduction in the distance between the nose N and the drum surface due to temperature increase, a spacer 20, Fig. 2, of a material having a high coefficient of expansion is inserted between the threaded sleeve 21 and the casing 22 of the screw arrangement 14. The dimensions are so arranged that when the temperature rises the spacer 20 expands to such an extent as to rotate the mounting 13 about the axis Q by an amount sufficient to maintain the distance between the nose N and the drum surface effectively constant. A modification for a drum having a horizontal axis is described (Fig. 3, not shown).
Patent GB-255864-A (GB)
Title: Improvements in the manufacture and production of active silica
IPC: C01B33/193
Filed: 1926-07-19
Abstract: 255,864. I. G. Farbenindustrie Akt.- Ges. July 23, 1925, [Convention date]. Oils, purifying.-Gels which may be used for removing sulphur from oils are made by treating a silicon compound to form a precipitate instead of a sol, and pressing the precipitate at 100 atmospheres or more but without heating. The silica may contain other oxides such as those of aluminium, iron, chronium, or nickel.