baber/WOPTO huggingface dataset:
Patent GB-647425-A (GB)
Title: Improvements in or relating to aerial systems
Inventor: JOHNSON WILLIAM ARTHUR
IPC: H01Q1/28
Filed: 1948-02-24
Abstract: 647,425. Aerials. MINISTER OF SUPPLY. Feb. 24, 1948, No. 5435. [Class 40 (vii)] A slot-aerial system for aircraft use comprises a conductive structure having two opposite, substantially parallel, surfaces meeting at an edge with a slot radiator cut in each surface, the slot radiators being so positioned and/or coupled to the radio equipment that the electrical path lengths through the two radiators between the radio equipment and the edge of the conductive structure in the plane of polarization of the radiators differ by,a distance other than an integral multiple of the operating wavelength. Consequently the currents flowing at the edges of each surface do not cancel out whereby an approximately omnidirectional radiation/reception pattern is obtained. Halfwave slot radiators are normally employed; however, folded-slot radiators may be used. The slots may be covered or filled with dielectric material. In Figs. 1 and la, the latter showing a horizontal cross-section through the tail-fin, slots I and 1a are cuts, in alignment, on opposite sides of the skin of the aircraft. Resonant cavities 4 and 5 are provided behind the slots, and are coupled by probes 10 and 11 and a cable 6 to the radio equipment 3. A delay line 7 is arranged between the cable 6 and probe 11 so that the probes are phased approximately 90 degrees apart at the mid-frequency. In an alternative arrangement the cavities are fed through separate cables differing in length by a quarter-wavelength. In the arrangement of Fig. 2 the slots on the opposite surfaces of the fin are spaced apart approximately a quarterwavelength in the direction of the longitudinal axis of the aircraft, slots being coupled either to a single cavity fed by a single probe or to separate cavities. In the latter arrangement the probes are coupled to the radio equipment through a common cable or through individual cables of equal length. A further difference in the electrical path lengths between the radio equipment and the edge of the tail fin may be introduced by the use of cables of different lengths connecting the probes to the radio equipment. In such an arrangement the combined phase-difference and consequently the polar diagram may be made independent of frequency. In Fig. 3a the slots 31 and 32 are aligned in a direction perpendicular to the tailfin and are coupled to the radio equipment by cables of equal length. Slot 31 is associated with slots 35 and 36 which are so cut as to act as a reflector and director respectively, while slot 32 is associated with a reflector slot 33 and a director slot 34. The slots 33, 34, 35, 36 introduce phase changes whereby the effective electrical paths between the radio equipment and the common edge to the surfaces in which slots 31, 32 are cut are made to differ in length.
Patent GB-631609-A (GB)
Title: Improvements in or relating to ultra-high frequency apparatus
IPC: H01P7/06
Filed: 1947-02-25
Abstract: 631,609. Electric resonators. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Feb. 25, 1947, No. 5436. Convention date, Nov. 28, 1945. [Class 40 (viii)] A cavity resonator comprises a hollow metallic body 15, a flexible diaphragm 19 mounted across its interior and intermediate of its ends, and temperature compensating means for deforming the diaphragm in response to ambient temperature changes to maintain the resonator tuned to substantially the same frequency throughout the temperature changes. In the arrangement shown diaphragm 19 is connected by a rod 23 to a plate 21 also mounted in the body 15. Rod 23 has a thermal coefficient of expansion differing from that of body 15 to provide the temperature compensating effect. Plate 21 is made of material capable of plastic, permanent, distortion so that after the apparatus is sealed the resonator can be tuned by distorting plate 21. A protecting cap 37 is secured over plate 21 to prevent accidental alteration of tuning. The resonator is mounted on resilient gaskets in a block 43 having apertures 55 and 57 corresponding to windows 29 and 31 of the resonator for input and output of energy. To simplify mounting the resonator in a wave-guide 85, the resonator 81 in Fig. 6 is shown with a dielectric path passing round it. The width of this path can readily be made sufficiently small to cut off H waves and all except the lowest mode of E waves. If the paths on each side of the resonator are symmetrical, this lowest mode does not leak seriously round the resonator.
Patent GB-717435-A (GB)
Title: Improvements in surgical shears
IPC: A61F15/02
Filed: 1952-03-01
Abstract: 717,435. Surgical shears. DENHOLM, J. S. Feb. 27, 1953 [March 1, 1952], No. 5437/52. Class 81(2) [Also in Group VIII] Surgical shears for removing plaster or the like from patients comprises a pair of lever arms pivoted together adjacent one end, a circular cutter disc mounted between the arms on the pivot therefor and adapted to be rotated by one arm through a ratchet or similar device, the cutter disc co-operating with the second arm to sever the material. In the shears shown (Figs. 3 and 4) a pair of lever arms A, A<SP>1</SP>, of which the latter is bent over to form a cutting edged foot a<SP>1</SP>, are pivoted together on a spindle a together with a cutter disc B formed with S-blade arms b. The foot a<SP>1</SP> may be recessed to shroud the cutter blade arms b as they rotate. The disc is driven in its cutting direction by movement of the arm A such that a spring-loaded pin C which is mounted on the arm to slide therethrough engages a shoulder b<SP>1</SP> in the recess between adjacent blade arms b. Movement of the arm A in the opposite direction allows an incline at the end of the pin to ride up the cutter disc and travel to a successive recess for further operational rotation, by the arm A, of the disc. For withdrawing the disc from the plaster the pin C is revolved through 180 degrees by a peg c<SP>3</SP> thereon to allow the blades to be driven in the reverse direction. Rotation of the pin in a clockwise direction through 90 degrees frees the pin from a spring c so that it may be. withdrawn for cleaning purposes. Fig. 2 shows a modification in which the relative disposition of the arm A<SP>1</SP> and the foot a<SP>1</SP> is changed.
Patent GB-681664-A (GB)
Title: Improvements in and relating to teleprinters
IPC: H04L13/18
Filed: 1951-03-07
Abstract: 681,664. Type-printing telegraphy. POINTEAU, P. March 7, 1951 [March 9, 1950], No. 5495/51. Class 40 (iii). For a tape-teleprinter, a device for counting the number of characters printed under the conjoint operation of the home and distant operators to provide an indication to the tapeteleprinter operator when the carriage-return signal should be sent, comprises a ratchet-wheel associated with a spring drum, a pawl for advancing the ratchet and a retaining pawl, a tape-advancing ratchet-wheel and an associated actuating pawl, and is provided with a member which, on disabling the tape-advancing pawl when characters not requiring letter-spacing are received, also disables the.actuating pawl of the ratchet of the counter. In addition the spring drum is formed with a member which removes the tape-advancing pawl from its ratchet when a number of characters corresponding to a line has been recorded. At each selecting operation, a link 16 rocks a lever 20 actuating a member 24 carrying a pawl 25 with a projection engaging teeth on a ratchet-wheel 1 integral with a spring drum 2. A retaining pawl 31 carried on a pivoted bracket 32 is provided with two teeth since the ratchet-wheel is formed with a space equivalent to two teeth at a position related to the position of the wheel when a full line of characters, normally sixty-nine, has been transmitted or registered. A further lever 21, similar to the member 20, oscillates a rod 22 which steps the ratchet-wheel 36 producing the feed of the tape. For signals which do not require printing or spacing, e.g. figureshift and letter-shift, a cam member 35 rotated by the operation of the corresponding lever, moves the rod 22 downwardly to disable the tape-feed arrangement, and subsequent engagement with a screw 37 disengages the pawl 25 from the ratchet-wheel 1. When the number of characters counted approaches that assigned to a line a plate 38 engaged by a cam 39 closes contacts 6, 7 to illuminate a lamp (not shown). When a full line has been recorded the end 58 of the pawl 25 is associated with the double space on the ratchet-wheel which cannot partake of further rotation. If the carriage-return signal is not transmitted when a full line of characters has been printed on the tape, a projection 42 on the drum engages a roller 40 on an arm 41 of the rod 22 to disengage the drive of the ratchet 36 so that the subsequent characters are overprinted on the tape. When the carriagereturn signal is transmitted a bell-crank 43 operated by the appropriate code lever rotates the bracket 32 so that retaining-pawl 31 is rocked out of engagement with the ratchetwheel 1 and engages the end of the lever 24 carrying the pawl 25. The ratchet-wheel rotates to its normal position and the terminal part of its travel is cushioned by the engagement of a projection 47 with a stop 48 on a slidable rod having one end 50 associated with an airbrake damping member. U.S.A. Specifications 2,014,938, 2,018,368 and German Specification 617,112 are referred to.
Patent GB-236608-A (GB)
Title: Improvements in or relating to the recovery of detergents and solvents used in the cleaning of fabrics
IPC: D06F43/08
Filed: 1924-03-04
Abstract: 236,608. Hinchley, J. W., and Stream- Line Filter Co., Ltd. March 4, 1924. Filtering-plant.-Liquid is forced into a filter from a supply vessel by gas pressure, and the increased pressure of the gas in the supply vessel due to the clogging of the filter is used to operate a valve which admits gas from the supply vessel to the filter so that it passes in the reverse direction through the medium therein and drives out the separated solid matter through another valve simultaneously opened by the gas pressure. Filters as described in Specifications 210,101 and 210,376 are preferably used. The arrangement is applicable in the filtration of water, wine, beer, oils and other liquids but its application to the treatment of solvent liquids which have been used in dry-cleaning is specially described. For such application the apparatus comprises an air or gas compressor 2, montejus 3, filter 10, still 4 and condenser 5. The liquid is supplied to the vessel 3 through a valve E and pipe 25. Gas supplied from the compressor through a valve F forces the liquid from the vessel through a pipe 21 and valve A, into and through the filter 10, the filtered liquid being discharged through a valve B. On rise of pressure in the vessel 3 gas is passed therefrom through pipe 23 and valve C to the filtrate side of the filtering-medium and drives the separated solid matter with a small amount of unfiltered liquid out through a valve D and pipe 12 to the still 4. The inlet to the still is provided with a gas separator 32. In this way the greater part of the solvent liquid is recovered in a. purified condition by filtration and the remainder by distillation. The valves A - - F are operated simultaneously by cams on a shaft which is turned sharply in one direction to close the valves E, C, D and open the valves F, A, B by the rising of a float in the vessel 3, and in the other direction to close the valves F, A, B and open the valves E, C, D by a piston in a cylinder connected to the vessel 3.
Patent GB-222383-A (GB)
Title: Improvements in and relating to disintegrators for grinding materials such as coal &the like
IPC: B02C13/282
Filed: 1924-03-05
Abstract: 222,383. Twort, F. March 5, 1924. Impact pulverizers.-Relates to disintegrators for grinding coal &c. and to machines of the twoscreen type with block-pieces H at the middle joints of the body casing. The upper outer casing A is of rectangular shape and provided with a door D<1> at the top, and the bottom section B of the casing is splayed out on one or both sides, the two screens F in the bottom section and. the two ratchets E in the upper section being of similar shape and size, independent of each other, and secured in the casing by means of stays P, Fig. III, and set-screws Q. The disintegrator may be provided with a door D<1> at the top of the casing A and two doors D<2>, D<3>, one on each end of the bottom casing B; or there may be four doors D<2> - - D<5> only on the ends of the casing. The doors are of square or rectangular shape, interchangeable, and flat seated. The beater-arms L are adjustable in recesses N in a disc M on the driving-shaft T.
Patent GB-697993-A (GB)
Title: Improvements in or relating to the purification and production of articles of magnesium and magnesium alloys
Inventor: EMLEY EDWARD FREDERICK
IPC: C22B9/02
Filed: 1951-03-08
Abstract: A process for treating Mg and Mg-base alloys comprises introducing the molten metal into a container which is rotated at a speed high enough to produce a comparatively sharp separation of undesirable suspended particles, rotating the container until the metal solidifies, the solid metal being stripped from the container and the outer skin containing the particles removed. The container may be of such shape that the solidified metal has projections containing the particles to facilitate machining off unwanted material.  The machined casting may then be melted and recast and/or forged, extruded or rolled.  The alloy to be treated may contain Zr with or without elements which in molten Mg do not combine with Zr to form compounds insoluble in the Mg.  To maintain the Zr content of the Mg the container may also contain an alloying composition capable of introducing Zr into Mg.  The treatment may be applied to a Mg base hardener alloy containing Mn or Zr which is then melted with a further quantity of Mg or Mg alloy.  The Specification refers specifically to treatment of an alloy of 8 per cent Al, 0.5 per cent Zn, 0.25 per cent Mn, remainder Mg.  Specifications 511,137, 649,594 and 652,227 are referred to.
Patent GB-343747-A (GB)
Title: Metal cutting machine tools
IPC: B23G1/22
Filed: 1930-02-20
Abstract: 343,747. Screwing die-heads. HERBERT, SIR A., Dunley Manor, near Whitchurch, Hampshire, DRANE, H. A., 77, Northfield Road, Stoke, and HARMER, F. S., Colintraive, Stoneleigh Avenue, both in Coventry. Feb. 20, 1930, No. 5674. [Class 83 (iii).] In a device for automatically cutting tapered screw-threads the die-head 2, whose chasers are operated by a rotary cam-plate, is secured by its shank and an adapter 3 to the rotary machine spindle 4. A sleeve 5 mounted on and rotatable with the die-head is provided with a pair of oppositely located slots 6 engaging radial pins 8 on the cam-plate and a pair of similar slots 7 engaging pins 9 on the shank, the slots 6, 7 being relatively inclined so as to cause rotation between the camplate and shank on relative axial movement between the die-head and sleeve. An annular groove 10 in the sleeve is engaged by a yoke 11 slidable on a stationary guide 13 and on a screwed rod 14 carrying adjustable stops 15, 16. In operation, the sleeve 5 advances with the die-head towards the work until the yoke-meets the stop 16 just as the chasers engage the work, whereupon the die-head travels forwards on the work whilst the sleeve remains stationary to rotate the cam-plate relatively to the shank and thereby cause the head to be opened progressively. The slots 6, 7 may be straight or curved according to the shape of the cam-plate, and the sleeve and chasers are readily replaceable to suit different tapers. For the return movement the rotation of the spindle is reversed and the sleeve and die-head are withdrawn together until the yoke meets the stop 15, after which the die-head alone recedes to effect closing.
Patent GB-1102401-A (GB)
Title: Pneumatically operated bottle gripper
Inventor: GATWARD JOHN KINGSLEY
IPC: B65B21/12
Filed: 1964-02-11
Abstract: 1,102,401. Pneumatically-operated bottle grippers. GRAHAM-ENOCK MANUFACTURING CO. Ltd. 11 Feb., 1965 [11 Feb., 1964], No. 5723/64. Heading B8H. A bottle gripper 1 has a tubular ring 3 which is expanded into engagement with the side of a bottle by compressed-air admitted through a conduit 10 and a connection 11. The conduit 10 may lead through a supporting rod 5. The ring 3 is open round its outer periphery and has flanges 7a, 7b which are clamped between spacing washers 8a, 8b by portions 4, 6 of the gripper. A resilient pad 12 prevents damage to the bottle. An annular supporting ring of hard rubber may be incorporated inside the ring 3.
Patent GB-927604-A (GB)
Title: Method of regulating the molecular weigh of olefin copolymers
IPC: C08F210/00
Filed: 1960-02-18
Abstract: An improvement, in the method of preparing copolymers of alpha-olefins with each other and/or with ethylene by operating at 30 DEG  to -100 DEG C. with at least one of the monomers liquid, in the complete absence of solvents, and in the presence of a catalyst formed by contacting an alkyl derivative of a metal of Group I, II or III and at least one liquid compound of a transition metal of Group IVa, Va or VIa, comprises carrying out the copolymerization in the presence of hydrogen.  Specified copolymers are those of ethylene-propylene, ethylene-butene and ethylene-propylene-butene, while specified catalysts are an alkyl aluminium, e.g. triisobutyl aluminium, and a vanadium compound, e.g. vanadium tri- or tetra-chloride, with or without a titanium compound.
Patent GB-310131-A (GB)
Title: Improvements in, or relating to, floors, roads, pavements and the like
IPC: E04B5/04
Filed: 1928-02-23
Abstract: 310,131. Granwood Flooring Co., Ltd., and Evans, L. P. Feb. 23, 1928. Block paving.-A hollow floor, road, or pavement is formed of slabs a having side feet c, e which rest on bearers d laid on piers, girders, or a concrete or brick surface. The slabs may be provided with cross ribs b and end grooves f for connecting tongues, and are removable for the inspection of pipes and cables. Both the slabs and bearers may be made of fibrous cement and may be reinforced.
Patent GB-752115-A (GB)
Title: Improvements in automatic flushing cisterns
IPC: E03D1/16
Filed: 1954-03-01
Abstract: 752,115. Automatic flushing cisterns. DELVOYE, M. N. J. March 1, 1954 [March 3, 1953], No. 5899/54. Class 26. An automatic flushing cistern 1 comprises a syphon 5 pivoted at 81 to a connecting pipe 4 with a float body 14 carrying a float 151 pivoted at 13 to the syphon, a water inlet 3, and a stop 15, the arrangement being such that as the water level rises the body 14 and float 151 raise the syphon until arrested by stop 15 when the body 14, which is open-topped, fills with water and sinks, carrying with it the syphon which primes itself (its open end is made funnelshaped to assist priming) and so discharges the cistern. A counterweight 12 ensures proper balancing of the syphon, and a catch may be provided to retain the syphon in its uppermost position when it is desired to interrupt the automatic working, the syphon then acting as an overflow. The syphon 5 and pipe 4 are connected at their join by a flexible membrane.
Patent GB-791654-A (GB)
Title: Improvements in or relating to mechanism for operating electric detectors associatedwith railway track points
IPC: B61L11/04
Filed: 1955-02-28
Abstract: 791,654. Railway points detectors. BRITISH TRANSPORT COMMISSION. Feb. 28, 1956 [Feb. 28, 1955], No. 5900/56. Class 105. In a track points installation of the hooklock type having an electric detecting apparatus comprising a detector operating device biased to urge the detector to one position and two obstructing members moving respectively with the switch rail and with the hook member so as to allow movement of the detector operating device to the position towards which it is biased only when the switch rail is engaged and locked to the stock rail, inter-engaging elements are provided, one of which moves with the hook member and is adapted to come into engagement with the other element on the other obstructing member for movement by the hook member only when the switch rail approaches the stock rail. As shown, the movable contact carrier 51, Fig. 5, is urged to a mid-position in which all the contacts are open, by the springs 53, Fig. 5, acting on an auxiliary arm, and is connected to the detector operating lever 23 pivoted on a fixed support associated with the stock rail and urged towards one operative position by the spring of a ground track lock 24, Fig. 1. Two cams 28, 29, Fig. 1, with stepped arcuate edges 34, 35, 36 and 44, 45 respectively, are pivotally mounted at offset pivots 31, 32 on a fixed support. Cam 28 is mechanically coupled to the switch rail via levers 42, 39 (pivoted at 41) and a slot and sliding block 37, 38. Cam 29 carries a pin 46 engaging in a notch 4 formed in the hook 18 formed on one arm of a bell-crank lever 16 pivotally mounted on the switch rail. The roller 43 on lever 23 is thus urged against the arcuate faces of the cams 28, 29 which are so arranged that the lowest steps 36, and 45 thereon are opposite the roller 43 only when the switch rail is against the stock rail and the hook lock is engaged, i.e. when the hook 18 is engaged by a locking face 19.
Patent GB-397040-A (GB)
Title: Improvements in and relating to electric power distribution systems
IPC: H02M7/06
Filed: 1933-02-27
Abstract: 397,040. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Sabbah, C. A., 1, Washington Avenue, Schenectady, New York, U.S.A.) Feb. 27, 1933, No. 5916. Convention date, Feb. 27, 1932. [Class 38 (ii).] In means for interchanging power between an A.C. circuit 10 and a D.C. circuit 11 comprising a mercury arc or similar discharge apparatus 12 fed through two sets of 6-phase secondaries on a supply transformer 13 associated with interphase transformer systems for effecting regulation, unequal load distribution between the two 6-phaes systems is prevented or reduced by the introduction of reactances into those phases of the main transformer system corresponding to the 6-phase system that tends to overload. The interphase . transformer systems comprise windings 19, 20, 21 associated with condensers 24, 26 and saturable transformers 27, 28 and are adapted to impart a flat compound characteristic to the converter as described in Specification 343,348. The load equalizing reactances according to the invention may be placed in the anode leads on the 'secondary side of the main transformer as indicated at 45, Fig. 1, or where separate primary windings 47, 48, Fig. 2, are used'for the two 6-phase systems, the reactances may be introduced into the primary side of the main transformers as indicated at 49.