baber/WOPTO huggingface dataset:
Patent GB-955857-A (GB)
Title: Photographic pivoted blade shutter with flashlight synchronisation device
IPC: G03B9/70
Filed: 1961-09-12
Abstract: 955,857. Photographic shutters with flashlight synchronization. AGFA A.G. Sept. 12, 1961 [Sept. 15, 1960], No. 32708/61. Heading G2A. A pivoted blade shutter having two blade rings 2,5,on which the blades are pivoted, the rings being arranged to run down consecutively in the same direction to open and close the blades includes a flash synchronizing device comprising a switch having a sliding contact arranged for movement by the blade opening ring to close the switch and for movement by the closing ring to open it-again. As shown the shutter is in the run down position. On setting the shutter both rings are moved in the direction of the arrow 6, the pin 1 on the opening ring 2 passing under the spring lug of the switch contact lever 4 which is held against movement by the pin by frictional engagement of the contact edge 7 with the base plate 8. When the ring 2 returns to effect shutter opening, the pin 1 drives the lever 4 clockwise to move the contact edge 7 over the fixed switch contact 13 and when the closing ring 5 runs down a pin 9 on a lateral arm on the ring engages the cam 10 on the lever 4 to return the switch lever to the position shown. In another embodiment (Fig. 3 not shown), the pivotal movement of the lever 4 is controlled by two pins on the opening ring 2, and the switch is opened and held open in the run down position of the shutter by the arm on the closing ring 5 engaging beneath a depending lug on the lever 4 to lift the contact-making portion clear of the fixed contact.
Patent GB-678453-A (GB)
Title: Improvements in or relating to ignition devices for electric discharge tubes
IPC: H05B41/08
Filed: 1949-12-21
Abstract: 678,453. Thermal switches. PHILIPS ELECTRICAL, Ltd. Dec. 21, 1949. [Dec. 24, 1948] No. 32728/49. Class 38 (v). [Also in Group XXXV] A starting device for a discharge lamp comprises an automatic starting switch in series with a thermal lockout switch (see Group XXXV), comprising a resilient part and a retaining part arranged to hold the resilient part when cold and so complete the circuit the heat sensitive element of the thermal switch being made responsive to the temperature of at least one electrode of the automatic switch so as to cause the lock-out switch to function and open after a number of unsuccessful starting attempts by the starting switch in the event of a faulty lamp. When the starting switch is electromagnetically operated (Fig. 2) the resilient member 13 forms the heat sensitive element and is secured at one end to the lower contact 12 of the starting switch whilst the other end is held under a step formed in the retaining member 22. When the lockout switch is used in conjunction with a glow discharge switch the retaining member 13 forms the heat sensitive element and lies axially along the external surface of the glass envelope 31 with one end held in position by a metal band 32 around the glass envelope, a good thermal conductivity being ensured by extending a strip of metal 30 from one switch electrode 12 to the inner wall of the glass envelope so that it lies either parallel to the retaining member as shown, or the band 32 holding the retaining member (Figs. 4 and 5, not shown). The metal strip inside the envelope may be bimetallic to ensure that it presses against the envelope wall when heated. The lock-out switch is reset by depressing the resilient member 14.
Patent GB-282377-A (GB)
Title: Screen for showing projected images in lighted rooms and for short-exposure photography
IPC: G03B21/602
Filed: 1927-12-05
Abstract: 282,377. Jensen, R. O. J. Dec. 15, 1926, [Convention date]. Projection screens. - A screen for use as a projection screen, or for use in contact with a sensitive plate during photographic exposure, comprises a plate of glass or other refractive substance, one surface of which is shaped to form lenticular elements having their foci approximately in the other surface, the latter surface being coated with an opaque layer except at the positions of the foci. The lenticular elements may be ellipsoidal or spherical, or may be cylindrical and of elliptic, cicrular, or other cross section. The plate may be thinner towards the edges than at the centre, having a curved surface towards the spectators, and the exposed surface of the plate at the positions of the foci may be slightly etched. Photographic negatives produced with the aid of the plate have image spots at the positions of the foci, and may be printed from by placing the plate P against the negative D in its original position, and placing the sensitive surface E at a distance from the negative.
Patent GB-449008-A (GB)
Title: Improvements in and relating to apparatus for dispensing liquid fuels, lubricating oils and the like
IPC: B67D7/60
Filed: 1934-11-14
Abstract: 449,008. Dispensing liquids. LOGETTE, A. I., and DAINTON, E. H., Skyhi Works, Standard Road, Park Royal, London. Nov. 14, 1934, No. 32760. [Class 102 (ii)] [See also Groups XVIII and XXIX] In apparatus for dispensing liquids, of the type in which liquid in a container 1, Fig. 2, is discharged through a pipe 12 by compressed air admitted through a pipe 26, outwardly-opening and equally-loaded check-valves 55, 37, Figs. 3 and 4, are arranged at the ends of the discharge system. The liquid is discharged through the pipe 12, a pipe 14, an air-trap 15, meter 17, sight-glass 21 and a hose 24 terminating in a nozzle 40. The latter contains a check-valve 43, which can be opened by means of a hand lever 51, and contains also the drip-preventing valve 55. When the liquid falls to a predetermined level discharge is prevented by means of a valve 29 operated by a cup-float 33. The upwardly-opening checkvalve 35 at the lower end of the pipe 12 contains a lightiy-loaded and downwardly-opening valve 37, the spring 37a of which can be adjusted by means of a hollow screw 39. The container is filled through an opening provided with a strainer 8. In modifications, the lower end of the pipe 12, Fig. 5, is upwardly-turned and the valve 29 is directly carried by the float 33. The valve 29 may be a piston valve, as shown, or a lift valve. In a further modification, the valve 29 is operated by a solenoid controlled by a switch which is operated by a float.
Patent GB-1509717-A (GB)
Title: Inductors for pulsed magnetic field working of tubular metal articles
IPC: H01F7/20
Filed: 1975-08-06
Abstract: 1509717 Electromagnets B A YABLOCHNIKOV 6 Aug 1975 32802/75 Heading H1P [Also in Division B3] An inductor for magnetic pulse shaping or working of tubular metal articles comprises a coil (Fig. 1) composed of flat conductors 1 of e.g. copper each made in the form of a radially slotted annular disc (Fig. 2, not shown) having leads 2 extending from its outward circumferential edge, or inwardly from its inner circumferential edge if the inductor is to be inserted inside an article to be deformed axially outwards. The leads are bent normally to the plane of the conductor to facilitate assembly and connection, e.g. by welding. The flat conductors are helically bent (Fig. 3, not shown) at a pitch such that the ends lie in planes relatively displaced by a distance corresponding to the length of the coil, and flat insulators 3 (Fig. 4, not shown) shaped to conform are punched from, e.g. GRP laminate, while the conductors and insulators are assembled into a multiple helix with the ends of the conductors and the insulators relatively circumferentially spaced at equal angles. The leads are bent at right angles to the plane of each disc. In assembly (Fig. 5) the pack of discs and insulators is encircled by an outer insulator 4 and the ends are protected by insulated washers 4 adjoining which are fitted tapered metal washers 6. An electrdynamic screen 7 surrounds the outer insulator, and the leads 2 are bent over and connected to washers 6 to which tubular or flat current bus-bars are attached and compressed together. Pulsating current is applied to leads 2 so as to produce a pulsed magnetic field which induces eddy currents in the tubular metal article 8 placed within the inductor for working, and in the screen 7. A resultant force is developed between the conductors 1 and the article 8 to deform the latter radially of its axis, while a corresponding force between the conductors 1 and screen 7 reduces the mechanical reaction on conductors 1 and the loading on insulator 4. The heat developed is transferred through leads 2 to, e.g. water cooled current bus-bars.
Patent GB-348011-A (GB)
Title: Improvements in or relating to the decolorization and stabilisation of distillate petroleum products with respect to colour and odour
IPC: C10L1/22
Filed: 1929-10-29
Abstract: Gasolene, kerosene, or other petroleum oil is decolorized and deodorized and maintained so by the addition of up to about 0,02 per cent of the following substances alone or mixed: (1) hydroxy-benzenes or hydroxy-naphthalenes, e.g. hydroquinone, resorcinol, pyrocatechol, orcinol, pyrogallol, phlorglucinol, 1 .2 .4 hydroxy-benzene, and a or b  naphthol; (2) thio-urea or derivatives thereof, e.g. thio-carbonilide; (3) other reducing agents, organic or inorganic, e.g. stannous chloride, sodium or potassium methylate or ethylate or other alkali alcoholate, phenyl hydrazine, and aromatic amines or organic acids or metal soaps which are reducing agents, e.g. o-, m-, or p-phenylenediamine, oxalic acid, and stannous oleate.  The agent may be added as a solution in a solvent miscible with the oil, e.g. in acetone, or ethyl, butyl, isopropyl, or other aliphatic alcohol; or it may be agitated with the oil; or the oil may be percolated through a mass of the solid agents.  In examples, the use of 1 lb. of agent to 50000, 75000, 100,000, 150,000, or 200,000 lbs. of oil is specified.  Reference has been directed by the Comptroller to Specifications 105,490, 196,237, 260,639, 262,107, 267,174, 269,840, 289,347, 289,909, 301,076, 312,774, 319,362 and 319,363, [all in Class 91, Oils &c.].
Patent GB-537613-A (GB)
Title: Improvements in or relating to emergency trip centrifugal engine governors
IPC: F01D21/18
Filed: 1939-12-27
Abstract: 537,613. Fluid-pressure servomotors. COCKBURNS. Ltd., RODGERS, J., and GRANT, T. Dec. 27, 1939, No. 32853. [Class 135] An emergency centrifugal stop device for a marine or other steam turbine is constructed with a speed-responsive device 2, Fig. 2, not shown, which at a pre-determined speed of the turbine rotor operates an arm on a shaft 23 and rotates the shaft counter-clockwise as viewed in Fig. 1 thereby releasing a catch 7 which normally holds a lever 8 serving to control a plunger 9 acted upon by a compression spring 10. This spring normally keeps closed a valve 3 of the kind described in Specification 491,486, and when the catch is released the valve 3 opens under fluid pressure, and pressure fluid is admitted via a pipe 29<SP>1</SP> to a cylinder 4 and a piston 31 is moved to close a stop valve 5 and cut off the steam supply. The catch lever 7 is integral with a lever 26 which permits of hand manipulation, and the movement of lever 7 is restrained by a slot in the lever 8. The levers 7, 8 are fitted with hard metal plates 7a, 22, and the lever 8 is formed with an aperture 27 for receiving a tommy bar adapted to restore the lever 8 to its operating position. A condensate trap 29<SP>2</SP> is formed in the pipe 291.
Patent GB-1181668-A (GB)
Title: Improvements relating to Air Responsive Apparatus
Inventor: CARTER IVOR JOHN
IPC: G05D1/06
Filed: 1966-07-21
Abstract: 1,181,668. Measuring electrically. ELLIOTT BROS. (LONDON) Ltd. July 10, 1967 [July 21, 1966], No.32912/66. Heading G1N. [Also in Division G3] In air-responsive apparatus for an aircraft, e. g. a helicopter, a Pitot tube 10, Fig. 1, movable about two perpendicular axes, is kept pointing into the incident air stream by servo means controlled by devices sensitive to the direction of the incident air stream. As described, the tube 10 is pivotally mounted in bearings 11 on an assembly 1 itself pivotally mounted on fixed axis 3. The assembly is provided with vanes 7 and 8, 9, shaped to automatically align themselves with the incident air stream, pivotable about axes parallel to that of bearings 11 and axis 3. The misalignments between the vanes and tube 10 in the planes containing the axes of pivot are sensed by electrical transducers 12, 19 detecting the outputs of differentials 13, 20, Fig. 3, connected to the tube 10 and vanes 8, 9, and assembly 1 and vane 7, respectively. The outputs of the transducers are fed to separate servoamplifiers, servomotors with tachometer feedback and gearing to reposition the tube 10. Alternatively the servosystems may be hydraulic or pneumatic. The control of the orientation of the tube about one axis may be mechanical. Additionally a vertical gyroscope and temperature sensor are provided on the aircraft from the outputs of which and that of the Pitot tube, indications of altitude, rate of climb or descent temperature, airspeed and side slip are computed, Fig. 3, the angles of pitch and yaw being obtained from the angular orientation of the Pitot tube.
Patent GB-740874-A (GB)
Title: Improvements in or relating to circuits for effecting temperature compensation of thermistors
IPC: H04B3/04
Filed: 1953-11-27
Abstract: 740,874. Telephone transmission systems. WESTERN ELECTRIC CO., Inc. Nov. 27, 1953 [Dec, 17,1952], No. 32994/53. Class 40 (4). [Also in Group XXXVIII] To compensate for changes in ambient temperature a thermistor RT (Fig. 2) is provided with additional heating current which is variable in dependence upon the heating current supplied to a second thermistor CT, subject to the same ambient conditions, which heating current is arranged to keep the temperature of the second thermistor constant. As shown, Fig. 2, the thermistors RT and CT are enclosed in the same envelope 1 through thermally screened from each other, and the thermistor CT forms an arm of a bridge circuit included in the feed-back path of a valve V1. The bridge is arranged to balance at a temperature above any ambient temperature likely to be encotmtered. In operation the bridge is always sufficiently unbalanced to cause the valve to oscillate, the oscillations heating the thermistor CT sufficiently to cause zero transmission. loss round the feed-back loop. In the event of the ambient temperature changing, e.g. falling, the resulting increased unbalance increases the amplitude of the oscillation sufficiently to restore the temperature of the thermistor CT to its original value. The output of the valve is also applied as an indirect heating current to the thermistor RT to effect the desired compensation, the thermistors CT and RT preferably having identical thermal characteristics. The compensating circuit may be used for thermistors CT in the interstage equalizer circuits RN of either of the repeaters shown in Fig. 1. In the first case normal control (i.e. by direct heating) of the thermistor is effected by means of a rectified pilot current and in the second case by a direct current controlled in accordance with the variations of resistance of a thermistor BT buried near the cable.
Patent GB-815147-A (GB)
Title: Improvements in or relating to magnetic recording sheets
IPC: G11B5/004
Filed: 1957-10-22
Abstract: 815,147. Duplicating magnetic records. TOKYO DENKI KAGAKU KOGYO KABUSHIKI KAISHA, and IIOSHINO, Y. Oct. 22, 1957 [Oct. 23, 1956; Dec. 26, 1956], No. 32999/57. Class 40 (2). Apparatus for duplicating magnetic recording sheets from a master sheet, comprising locating means for positioning the master sheet relative to a recording machine, and means for forming a second locating means in the duplicating sheet in accordance with the location of the master sheet. In the embodiment described with reference to Figs. 4 and 5, a master sheet M is located on a base plate 10 with its magnetic coated side uppermost. A duplicating sheet P, having a magnetic coated area somewhat larger than that of the master sheet M is placed face downwards on the master sheet beneath a pressure plate 11. Punching means 12, 12<SP>1</SP> perforate both sheets identically prior, or after, the printing operation which consists of applying a magnetic field through the sheets. The field may be alternating or direct of sufficient density to effect printing and is then decreased to zero. A modification of this apparatus is shown in Fig. 6 in which guide members 13 locate the duplicating sheet. A method is shown in Fig. 8 by which means duplication is carried out on a cylinder 15. During printing the cylinder is rotated by a pressure roller 16, and stationary electromagnets 18, 18<SP>1</SP> within the cylinder 15 and roller 16, respectively, ensure a concentrated field at the point of contact.
Patent GB-1155512-A (GB)
Title: Novel 4-Oxa-Steroids
IPC: C07C59/205
Filed: 1967-04-17
Abstract: 1,155,512. 4-Oxa-steroids. F. HOFFMANNLA ROCHE & CO. A.G. 17 April, 1967 [19 April, 1966]. No. 33010/68. Divided out of 1,155,511. Heading C2C. Novel compounds of formula wherein R<SP>1</SP> and R<SP>2</SP> each represent hydrogen, C 1-6  alkyl, C 1-6  alkoxy or C 1-6  alkylthio; R<SP>6</SP> and R<SP>7</SP> each represent hydrogen, halogen, C 1-6  alkyl, C 1-6  alkylthio or C 1-6  alkanoylthio; R<SP>11</SP> represents hydrogen, hydroxy or C 1-6  alkanoyloxy; R<SP>16</SP> represents hydrogen, hydroxy, C 1-6  alkyl, C 1-6  alkoxy or C 1-6  alkanoyloxy, or, when there is a 17#-(acetyl, haloacetyl or hydroxyacetyl) group, R<SP>16</SP> may also be fluorine; and Z is carbonyl, a 17#-hydroxy-17α-(C 1-6  alkanoic acid) lactone group, or a group of the formula CR<SP>17α</SP>R<SP>17#</SP>, wherein either R<SP>17#</SP> represents hydroxy or C 1-6  alkanoyloxy and R<SP>17α </SP>is hydrogen or C 1-6  aliphatic hydrocarbyl or R<SP>17#</SP> represents acetyl, haloacetyl, hydroxyacetyl or 1,1-ethylenedioxy-ethyl, and R<SP>17α</SP> is hydrogen, halogen, alkyl, hydroxyl, or C 1-6  alkanoyloxy, are prepared by dehydrating compounds of formula the latter being described and claimed in Specification 1,155,511.
Patent GB-486402-A (GB)
Title: Improvements in or relating to valves and cocks
IPC: F16K5/02
Filed: 1937-11-30
Abstract: 486,402. Plug valves. CROSBY, W. E., and ALUMINIUM PLANT & VESSEL CO., Ltd. Nov. 30, 1937, No. 33031. [Class 135] The outlet and /or inlet passages of a rotary plug valve are made to converge towards the passage in the plug member c by flared portions in separate union members e which are adapted to receive the conduit connections. The plug member c is held in position by a holding down element k which accommodates a resilient packing element m for sealing the joint between the plug and the valve body. Specification 276,822, [Class 135], is referred to.
Patent GB-275856-A (GB)
Title: Improvements in and relating to selectors for telephone systems
IPC: H04Q3/00
Filed: 1926-12-31
Abstract: 275,856. Telefon-und Telegraphenbau-Ges., and Heibel, A. Dec. 31, 1926. Automatic exchange systems.-In systems in which co-ordinate selectors are replaced by a single motion tens switch ZW and a number of permanently associated units switches EW1, EW2, the latter have two or more angularly displaced sets of wipers a - - c, a<1> -c1 one of which is selected by the tens switch. In the connector described, line relay I repeats the tens digit to the magnet DZW and the relapse of the series dialling relay II energizes (over an off normal contact w) a relay U which locks up and extends the impulse circuit over wiper d to one of the magnets DEW1, DEW2 &c. of the units switches. At the end of the units digit, relay II falls back to connect up the test and switching relay P which opens the impulsing circuit.
Patent GB-626671-A (GB)
Title: Improvements in and relating to anode structures for cathode ray tubes
IPC: H01J37/09
Filed: 1946-11-07
Abstract: 626,671. Cathode-ray tubes. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 7, 1946, No. 33138. Convention date, Nov. 10, 1945. [Class 39 (i)] An anode structure for a cathode-ray tube, such as an electron microscope or an electron diffraction instrument, comprises a movable portion having a plurality of apertures therein, a fixed portion, means for maintaining an electrical connection between the portions, and means external to the envelope of the tube, whereby the position of the movable portion may be varied to direct the electron beam through a selected one of the apertures on to a viewing screen. Fig. 2 shows a plan of an anode and Fig. 4 shows a section along the line 4-4. The fixed portion 12 has an aperture 15 which is covered by the movable disc 16 containing two holes 17, 18, one approximately four times the diameter of the other. The disc 16 may be moved by two rods 25, 26, which bear on rods 29 operated from outside the tube by a rack and pinion. In this way either of the two apertures 17, 18 can be brought into the path of the electron beam; the larger aperture may be used for focusing and the smaller for electron diffraction experiments.
Patent GB-1488198-A (GB)
Title: Resin-forming solution
IPC: C08L25/00
Filed: 1975-08-08
Abstract: 1488198 Styrene/maleic anhydride copolymer/ monomer solutions; epoxy resins GULF OIL CORP 8 Aug 1975 [29 Aug 1974 26 June 1975] 33264/75 Headings C3P and C3B A curable resin-forming solution comprises monomeric styrene, monomeric maleic anhydride and a styrene/maleic anhydride copolymer, the mole ratio of monomeric styrene to monomeric maleic anhydride being 1 : 1 to 4À5 : 1, the mole ratio of styrene to maleic anhydride in the copolymer being 1 : 1 to 2 :1, and the anhydride equivalent ratio of monomeric maleic anhydride to the copolymer being 1 : 2 to 10 : 1. The solution may also contain a cross-linking agent which is reactive with the anhydride groups, and which is preferably a 1,2-epoxy resin or compound, having an epoxy functionality greater than 1, there being 0À3 to 1À5 anhydride equivalents per epoxy equivalent. In the examples, the diglycidyl ether of bisphenol A, is used, the mixture containing a catalyst for both the cross-linking reaction and the polymerization.
Patent GB-363774-A (GB)
Title: Improvements in electrically heated hot plates
IPC: F24C15/10
Filed: 1930-11-05
Abstract: 363,774. Electric hot-plates. NICHOLSON, L., Hall Lane, Woodford, Stockport, NEEDHAM, W., Cartmel, Broadoaks Road, Sale, Cheshire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Nov. 5, 1930, No. 33286. [Class 39 (iii).] The heating element 1 comprises an insulated resistance supported in a pan 11 to which it is hinged so that it may be tilted to allow the pan to be cleaned. The article to be heated is placed on the element. The latter carries spiders 4 which rest on the pan. The pan is made of aluminium or stainless steel or is chromium plated. The heating element and switch mechanism may be interconnected for automatic operation of the latter. 363,775. Electric incandescent lamps. BRITISH ELECTRICAL & ALLIED INDUSTRIES RESEARCH ASSOCIATION, TAYLOR, H. G., LETHERSICH, W., and WEDMORE, E. B., 36, Kingsway, London. Nov. 6, 1930, No. 33396. [Class 39 (ii).] The cap k of a gas-filled incandescent lamp is separated from the gas-filled bulb a by a heat - insulating member which, in the example shown, comprises a vacuum compartment f separated from the bulb a by an annular or conical glass partition g. The stem b of the lamp has a central exhausting and filling tube c of the usual kind, and the leading-in wires e pass down the stem b and are sealed into the pinch d. The vacuum compartment f may be sealed off in a pip h which is protected by the cap k. A separate vacuum compartment in the form of a bulb provided with its own stem may be interposed between the cap and the gas-filled bulb, the leading-in wires from the cap being taken through the stems of the two bulbs to the filament.