baber/WOPTO huggingface dataset:
Patent GB-1097704-A (GB)
Title: Cooling means for power tubes
IPC: H01J1/46
Filed: 1965-06-30
Abstract: 1,097,704. Thermionic valves. RADIO CORPORATION OF AMERICA. June 30, 1965 [July 21. 1964], No. 27808/65. Heading H1D. In a tetrode valve, a beryllia insulating ring 62 is hermetically sealed between the upper end plates 48, 58 of the control and screen grids to form a chamber 60 through which coolant is circulated. The duets 64, 66 for circulating coolant may extend through the upper end of anode 10 and plate 58 instead of through the valve base 21 and plate 48, and may be of metal or alumina. To compensate for differing thermal expansions the ducts 64, 66 may be sealed to members 10, 58 or 21, 48 through expansion compensating means, Figs. 2, 3 and 7 (not shown). The end plates 48, 58 may be strengthened by metal plates brazed to their lower and upper surfaces, respectively, or metal eyelets may be provided around the ducts adjacent the end plate. The facing surfaces of plates 48, 58 may be roughened or may have fins or baffles fixed thereto.
Patent GB-1125441-A (GB)
Title: Trays
Inventor: WESTLE GORDON AYRE
IPC: A47G23/06
Filed: 1964-07-06
Abstract: 1,125,441. Carrying trays. L. M. J. BALFOUR. 5 Oct., 1965 [6 July, 1964], No. 27819/64. Heading A4A. [Also in Division E2] Plates 3, 4 riveted to opposite sides of a tray 1 have projections 5 engaged in keyhole apertures 16 in end plates 10, 11 of a bail-like support 9 to which a handle 14 is pivoted by a link 15. Each projection has a portion 19, converging opposite sides of which are engaged by converging walls 17, 18 of the aperture in a rigid carrying position of the support, and the projection is rotatable in the larger part of the aperture for folding of the support against the tray for storage. Discs 7, 8 retain the plates 10, 11. The support is locked in storage position, folded to either side of the tray, by sliding engagement of the walls 17, 18 with converging walls provided on the other opposite sides of the portion 19. In modifications, the projections are U-shaped or the portion 19 is square, the support is lockable in only one, or in neither, folded position, or the support extends from only one side of the tray to a point above the centre of curvature of the tray. The tray is preferably made of fibre glass and the support and plates 10, 11 have a flexible coating, e.g. of nylon.
Patent GB-1468686-A (GB)
Title: Signal devices
IPC: B60Q1/44
Filed: 1974-06-24
Abstract: 1468686 Road-vehicle signals C W MARTIN 24 June 1974 [28 Nov 1973] 27878/74 Heading G4Q A road-vehicle signal comprises a first vane having a first face with warning indicia thereon for indicating, to the driver of a following vehicle, that the vehicle is travelling below a predetermined speed range or is stationary, means pivotally mounting the vane for swinging between a closed position in which it is aligned with the direction of travel and in which the face is invisible to the following driver and an open position transverse to the travel direction and in which the face is fully visible to the following driver, resilient means urging the vane to the open position when the vehicle is travelling below the predetermined speed range and the vane is moved to the closed position by aerodynamic forces when the vehicle is travelling at a higher speed. A second like vane pivotally mounted adjacent to the first vane and arranged to swing in an opposite direction may be added, the two vanes being held in one plane when open. A frame protects the vanes against engagement with obstructions. The device may be secured to the top of a vehicle by a suction cup. It may be arranged that the extent of viewed area indicates vehicle speed. Further cautionary indicia may be added.
Patent GB-322271-A (GB)
Title: Improvements in or relating to radio valve circuits
IPC: H04B1/16
Filed: 1928-09-28
Abstract: 322,271. Igranic Electric Co., Ltd., and Hodgson, A. D'A. Sept. 28, 1928. Thermionic amplifiers employing valves with two or more grids have the input circuit connected between the inner grid and the filament, and the output circuit backcoupled to the outer grid. As shown in Fig. 2, the plate circuit includes a coil 2 with a resistance 6 connected across an extension, a slider or tapping on the resistance being connected to the outer grid of the valve. The slider may make direct contact with the coil extension (Fig. 1, not shown), or the resistance 6 may be connected across a coil coupled to the plate coil (Fig. 3, not shown). The next valve 4 may be coupled by a capacity 3 or by magnetic coupling to the coil 2. In another form shown in Fig. 4, reaction to the outer grid is taken from a resistance 6 connected across a coil 7 which is coupled to the grid coil 9 of the next valve 4, voltage for the outer grid being supplied by a lead X. A further modification, Fig. 6, employs an autotransformer 11 as the intervalve coupling, the outer grid being associated with a coil 7 coupled to the coil 11. The reaction may be employed to strengthen the received signal, to neutralize a tendency to self-oscillation, or to correct the frequency characteristic of the coupling system.
Patent GB-225234-A (GB)
Title: Improvements in thermionic valves and the like
IPC: H01J7/18
Filed: 1924-11-21
Abstract: 225,234. Compagnie GÚnÚrale de TÚlÚgraphie Sans Fils. Nov. 21, 1923, [Convention date]. Vacuum tubes.-A piece of magnesium, calcium, or zinc is attached to an electrode, such as the anode, and the bulb is exhausted and sealed, and the electrode heated by electron bombardment so as to flash the magnesium &c., which is deposited on the bulb and produces a high vacuum. The bombardment process may be short. A resistance may be connected in the high-tension circuit so as to protect the cathode during the flashing process, or several valves may be connected in series. It is suggested that magnesium &c. vapour may affect the surface of the cathode. The cathode may consist of tungsten, platinum, osmium, or tantalum, with or without thorium, uranium, cerium, zirconium, or yttrium, or their compounds ; or thorium alone may be used. Reference has been directed by the Comptroller to Specification 225,926.
Patent GB-699952-A (GB)
Title: Improvements in and relating to optical projection apparatus of the episcope type
Inventor: BRISCOE HUGH VILLIERS
IPC: G03B21/06
Filed: 1949-11-04
Abstract: 699,952. Optical projection apparatus; photogrammetry. GRANT PRODUCTION CO., Ltd. Feb. 2, 1951 [Nov. 4, 1949], No. 28264/49. Classes 97 (i) and 97 (ii). Episcopic apparatus, particularly for projecting aerial photographs, comprises a support for the object to be projected adapted to be oriented about a predetermined point so that all points in the object can be relatively adjusted without altering the distance between the predetermined point and the screen. In the form shown, an annular base member 10 is axially adjustable in the optical projection apparatus. A disc 11 is held in place above the centre aperture by a bolt 12 passing through a strip 13 below the base and carrying a wing nut 14. The bolt 12 is integral with square post 12a on one face of which parallel levers 15, 16 are carried on pivots 13. The levers are pivoted at their outer ends to links 17 with upwardly extending portions 17a. An exactly similar system of levers is pivoted at 151, 161 on an adjacent face of the post 12a. The tops of the links 17a are pivoted to members 25 each having a pin 27 extending into a hole midway along one side of a square frame 18. This frame is flanged at 18a to support an inner frame 19, the flanges 19a of which carry felt strips 20 on which an iron plate 21 is placed carrying a felt layer 22. The felt layer has mutually perpendicular lines of stitching intersecting at the centre of the frame to assist in positioning a photograph held in place by a glass plate 23. The levers 15, 15<SP>1</SP> are pivoted to links 30, 30<SP>1</SP> screw-threaded at their lower ends and engaged by screw-threaded sockets rotatable by knobs 28 through flexible shafts to tilt the photograph frame. Grooves 33 in the members 17 co-operate with indices 34 to indicate the level position of the frame. Specification 664,831 is referred to.
Patent GB-1391785-A (GB)
Title: Apparatus for casting lead and like metals
IPC: B22D39/00
Filed: 1971-06-17
Abstract: 1391785 Casting apparatus B R LEWIS 14 June 1972 [17 June 1971] 28356/71 Heading B3F [Also in Division F1] Apparatus for use in casting lead comprises a container 1 for the molten metal, a centrifugal pump 6 located within the container, a discharge duct leading from the pump to a delivery point, and a slide valve 7 movable between positions in which the duct is closed and open respectively. When the duct is closed a passageway 27 in the valve 7 allows the pump to recirculate the molten metal freely. Alternatively, the pump may be arranged to stall when the valve is in the closed position. The pump 6 is driven by a motor 14 via pulleys (15), (16), a belt (17) and an inclined shaft 13, at a speed between 250 and 750 r.p.m. The valve 7 is operated by a pneumatic actuator 25 which may be controlled automatically by the operation of a casting machine and an adjustable timer. The molten lead may be maintained at a temperature of 350‹ C. in the container 1 and may be heated to 450‹ C. as it nears the end of the discharge duct 10 by a burner 12.
Patent GB-504277-A (GB)
Title: Improvements in or relating to hydraulically operated machine tools
IPC: B23Q5/033
Filed: 1937-10-19
Abstract: 504,277. Hydraulically - actuated machine tools. VICKERS, Inc. Oct. 19, 1937, No. 28412. Convention date, Oct. 21, 1936. [Class 69 (ii)] In a machine tool having a part A reciprocated by a motor 9, the hydraulic system comprises a pump 1, a direction determining valve 3, hydraulically actuated under the control of a pilot valve 5, and a relief or byepass valve 18 under the control of the pilot valve 5 and of a stop valve 24. The parts are shown occupying their positions for the rapid advance portion of the forward half of a cycle. Pressure liquid passes via lines 2a, 2, around the valve 3, through line 4, and through the valve 5 to line 7 whereby the valve 3 is moved upwardly to the forward position as shown, the line 21 communicating through the valve 5, around the valve 3, through passage 14a to an exhaust space 14. Pressure liquid passes through valve 3 and line 8 to the motor, and liquid exhausts from the latter through line 10, through the valve 3, and passages 11, 12 to the exhaust space 14. When the part A arrives at a predetermined point of its stroke, a cam 15 thereon depresses a valve 13 whereby passage 12 is cut off from the exhaust space 14, and the exhaust from the motor has to pass through a valve arrangement 16, 17 whereby the speed of travel is reduced. At the end of the forward stroke, a cam 20 on part A depresses the pilot valve 5 to reverse .the position of the main valve 3 and cause the return stroke of part A. At the,end of the return. stroke, the valve 24 is depressed by a cam 25 ; the space 26 above the piston 28 of the relief valve 18 is now connected to line 7a, which is at this time connected through the pilot valve 5 with exhaust; the relief valve thus opens, and the machine part comes to rest. To initiate a fresh cycle, the pilot valve 5 is moved upwardly to ,"forward" position; the line 7a is thereby put to pressure, and space 26 is refilled, causing the valve 18 to close, and the forward stroke 'to be indicated. Remotecontrol means may be included, and a time-lag device may be used. Specification 399,609 is referred to.
Patent GB-445042-A (GB)
Title: Improvements in or relating to the manufacture of concrete, reinforced concrete, or like floor or roof beams
IPC: B28B7/24
Filed: 1934-10-04
Abstract: 445,042. Moulding concrete &c. beams. SIEGWART FIREPROOF FLOOR CO., Ltd., and McDOWELL, C. T. J., 231, Strand, London. Oct. 4, 1934, No. 28416. [Class 87 (ii)] Concrete, reinforced concrete, clay, or other similar beams for use in floor or roof construction, are cast side by side with separators of tapered cross-section placed therebetween so as to be removable when the mass has consolidated, the separators being formed with ribs or depressions to form corresponding depressions or ribs on the sides of the beams. The separators a may be made of wood, but as shown are composed of pressed metal plates welded or soldered together, and are hollow. The ribs b are pressed out from the metal and taper downwardly. The outer sides of the two outside beams are formed by suit-. ably shaped boards or metal pressings.
Patent GB-469093-A (GB)
Title: Improvements in or relating to magnetic systems, particularly for electro-acoustic apparatus
IPC: H04R11/00
Filed: 1935-10-15
Abstract: 469,093. Sound recorders or reproducers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 15, 1935, No. 28454. Void. Convention date, Oct. 19, 1934. [Class 40 (iv)] An electromagnetic device for a loud-speaker or a phonographic recorder or reproducer comprises a moving permanent magnet 1 of tubular form of which the ends are surrounded by coils 2, 3, to which the speech currents are fed, and a soft-iron ring 4 for increasing the field intensity in the coils and for deflecting the lines of force, so that they lie approximately in planes parallel to the coil turns. The magnet 1, which is attached by a rod 5 to the apex of a conical diaphragm 6, may be a solid of revolution with recessed ends, Fig. 2 (not shown), and is made of a magnetic alloy having a B-H maximum value greater than 10<6>, c.g.s. units, e.g. a nickel, cobalt, aluminium or titanium alloy.
Patent GB-871510-A (GB)
Title: Improvements in or relating to selective timing devices
IPC: H01H43/12
Filed: 1957-09-10
Abstract: 871,510. Switching systems. BETTER PACKAGES Inc. Sept. 10, 1957 [Sept. 11, 1956], No. 28573/57. Class 38 (4). [Also in Groups XVII and XXXVII] A machine for dispensing measured lengths of gummed tape comprises a timing device having a main shaft 24 which is driven through gearing 26 by means of a pilot motor. A switch 34, for ensuring that the pilot motor completes one revolution after it has been started, is actuated by cam 36 which is notched to co-operate with a blade and a push-pin. A number of push-buttons 50 each actuate a switch 52 having an actuating-pin 54 which is pushed down when the switch is to be closed and which will stay in the position to which it is moved. A number of cams 56 on the shaft 24 are each engaged by a blade 57, so that a depressed pin 54 is engageable by a cam to reset the switch associated with the cam. The cams 56 are mounted at various angles so that a depressed push-button may be re-set at the proper time during the revolution of the camshaft. The angular positions of the cams may be made adjustable by providing the shaft with longitudinally extending teeth co-operating with set-screws in the cam. The pilot motor is started by closure of one of the switches 52, whereupon the switch 34 is actuated to continue operation of the pilot motor, independently of the push-button switches, until the shaft has completed one revolution. A solenoid 130 operates to start and stop the feed of tape when a switch 52 is closed and opened, the duration of the feed being determined by the angular setting of the cam corresponding with the push-button which has been actuated. The coil of the solenoid is connected in series with the bank of push-button switches, which are connected in parallel with each other. As shown, the machine incorporates a roll of tape 100 from which a strip passes between feed-rollers 104, 106. A feed motor 116 drives the roller 106, the roller 104 being mounted in a cradle 118 which is normally swung upwardly by means of spring 122. The cradle 118 is drawn down by the solenoid 130 to cause the roller 104 to grip the tape and start the feeding operation. A cutter 124 is operated by solenoid 134, the time of cutting being determined by a cam 56a having a pin 142 for engaging the operating arm 144 of switch 146 and energizing the cutter solenoid. The cutting-operation preferably takes place as soon as possible after the time required to feed the longest strip of tape. The cam 56a may also operate one of the push-button switches. In a modification, the pilot motor is dispensed with and the cam-shaft is driven from the motor 116 through a solenoid-operated clutch, Fig. 13 (not shown). Specification 827,188 is referred to.
Patent GB-665803-A (GB)
Title: Improved spray nozzle
IPC: B05B1/26
Filed: 1949-11-09
Abstract: 665,803. Spray-producers. FARBENFABRIKEN BAYER. Nov. 9, 1949 [Nov. 11, 1948], No. 28755/49. Class 69 (iii). A flat-jet liquid spray nozzle includes a body member 6 with one or more bores 8 partly overlapped by the circular shoulder 5 of a centrally screwed bolt 7, the underside of the head of which forms a deflecting surface.
Patent GB-1141025-A (GB)
Title: Floor coverings
Inventor: BIRKETT GORDON
IPC: C08J9/06
Filed: 1965-07-07
Abstract: 1,141,025. Differentially foamed plastics. FISONS INDUSTRIAL CHEMICALS Ltd. 16 May, 1966 [7 July, 1965], No. 28777/65. Headings C3C, C3P and C3R. Cellular plastic material, suitable for use as a floor covering, is obtained by a process which comprises forming a sheet containing a plastic material, consisting of a polymer or copolymer derived from vinyl chloride, vinyl acetate, vinyl alcohol, vinylidene chloride or a polyamide, and a blowing agent, heating one face of the sheet to a temperature at which the blowing agent is decomposed and heating the other face so that the blowing agent is not decomposed and in any event heating the sheet to a temperature at which it is cured. P.V.C. is the preferred plastic material. The amount of blowing agent is suitably 1% to 10% by weight of the weight of plastic material and the example describes the use of a mixture of azodicarbonamide and benzene sulphonhydrazide. Other typical blowing agents may also be used. Plasticizers such as esters of acids, e.g. phosphoric, adipic, lauric, oleic, sebacic and stearic acids and phthalic anhydride may be used and dioctyl phthalate, dialphanyl phthalate and butyl benzyl phthalate are specified. Solvents such as an ester, an alcohol, an alcohol-ester and petroleum and coal tar spirits may also be included in the plastic material. Fillers such as asbestos, mica, slate dust, fuller's earth, clay, calcium carbonate and cellulose and textile materials may also be used and other ingredients include hardeners, accelerators and dyes. The example specifies titanium dioxide, whiting and stearic acid as additives and a cadmium-zinc stabilizer.
Patent GB-1335157-A (GB)
Title: Selvage needle motion in a narrow ware loom
IPC: D03D35/00
Filed: 1972-06-20
Abstract: 1335157 Selvedge knitting needles CROMPTON & KNOWLES CORP 20 June 1972 [21 June 1971] 28897/72 Heading D1E A selvedge knitting needle 22 is simultaneously oscillated about an axis 27 coincident with the fell and reciprocated transverse to the axis to intercept the axis. In one embodiment, Figs. 2 and 3, a holder 30 carries two needles 22 acting on adjacent edges of two fabrics on a double fabric loom, and holder 30 has a cylindrical member 32 slidable in a guide block 24 which is pivotable about an axis 27 coincident with the fell. A crank 34 reciprocates and oscillates the member 32. In alternative embodiments, a crank (50) Fig. 5 (not shown) oscillates a lever 44 pivotally attached to the end of member 32, or a lever (54) Fig. 6 (not shown) which acts on a link (58) pivoted to a needle holder (24") to reciprocate the same, while a cam (66) oscillates it about axis 27.
Patent GB-1501632-A (GB)
Title: Aromatic ketones having cardiovascular activity
IPC: C07C217/36
Filed: 1974-06-28
Abstract: 1501632 3 - Tert - butyl - 2 - hydroxy - 1- phenoxypropanes CM INDUSTRIES 25 June 1975 [28 June 1974] 28925/74 Heading C2C Novel compounds I in which R<SP>2</SP> is C 1-4  alkyl, R<SP>3</SP> is H or C 1-4  alkyl and R<SP>4</SP> is halogen, in racemic or optically active form, and acid addition salts thereof, are prepared by (a) reacting a compound II with a 1-halo-2,3-epoxypropane in the presence of an acid acceptor and a solvent, and treating the resulting compound III with tertiary butylamine in the presence of a solvent, or (b) for compounds I in which R<SP>3</SP> is H and the acyl and ether groups are ortho to each other, by hydrolysing a compound (IV) to give an aldehyde (V) treating this with a Grignard reagent R<SP>2</SP>MgBr to give a corresponding benzyl alcohol, and oxidizing this with chromic acid to give the desired compound I. Pharmaceutical compositions having cardiovascular activity comprise one of the above novel compounds together with a pharmaceutical carrier.
Patent GB-920770-A (GB)
Title: Manufacture of composite conductors
IPC: H01B13/26
Filed: 1959-08-25
Abstract: 920,770. Making electrical conductors; drawing; skelping. WESTERN ELECTRIC CO. Inc., and SIMPLEX WIRE & CABLE CO. Aug. 25, 1959 [Aug. 29, 1958], No. 29044/59. Classes 83 (2) and 83 (4). A method of forming a composite electrical conductor in one continuous operation comprises the steps of stranding together a plurality of bare wires to form a core of substantially uniform diameter, at the conclusion of the stranding operation folding longitudinally over said core a tape of material of high electrical conductivity to form a sheath, securing the abutting edges of the tape together to form a hermetic seal and then forcing the sealed sheath into intimate contact with the core, the sheathing step being carried out sufficiently closely to the stranding step to substantially prevent basketing of the stranded core. A stranded core SC of steel wires about a central core wire of slightly heavier gauge than the others formed in a stranding machine ST passes through a forming die D into roller skelping means, comprising six sets of forming rolls, Figs. 5-9A (not shown) which fold a copper tape CT up around the core SC to form a longitudinally seamed sheath. The seam is then welded, preferably at a distance of about one metre from the stranding machine. The sheath is then reduced in diameter to fit closely on to the core SC by passage through a succession of sets of reducing rollers, Figs. 10, 11 (not shown) and the finished conductor passes through a sizing die D2 and is stored on a reel RL. Endless belt means TM may pull the conductor assembly through the various forming machines. U.S.A. Specifications 2,690,642 and 2,270,093 are referred to.
Patent GB-986781-A (GB)
Title: Dry shavers
IPC: B26B19/04
Filed: 1963-07-23
Abstract: 986,781. Bolts; nuts; washers; bolting; anchor-nuts. BRAUN A.G. July 23, 1963 [July 24, 1962], No. 29078/63. Heading F2H. [Also in Division B4] The ends of a foil 3, Fig. 2, are secured to flanges 2 of a frame of a dry shaver by means of nuts 9 screwed on to bolts 8 and engaging with clearance holes in the ends of the foil. The ends of the foil are pressed against the flanges, through the intermediary of ring projections 10 on the nuts, by means of split rings 14. In a modification, Fig. 4 (not shown), the split rings are replaced by an elastic strip 14<SP>1</SP>. In another modification, Fig. 5, each end of the foil is pressed against a flange 2 by means of a spring member 16 welded to the foil at 17 and having arms 18 provided with openings 19 which are pushed over the ends 12 of the nuts 9 protruding from the clearance holes 13. In a further modification, a strip 20, Fig. 6, is provided with lugs 21, 22 which pass around the edges of the foil and with openings 23 through which the nuts pass.