baber/WOPTO huggingface dataset:
Patent GB-741362-A (GB)
Title: Improvements in or relating to processes for producing castings of molybdenum alloys
IPC: C22C27/04
Filed: 1952-03-17
Abstract: In a modification of the process claimed in the parent Specification for casting an alloy of Mo with or without an amount of W not exceeding the Mo content, an amount of C necessary to establish a residual C content of 0.01-0.25 per cent by weight of the alloy is mixed with the metal together with not more than 15 per cent of at least one of the following ingredients: V up to 7.0 per cent, Ti up to 14,0 per cent, Ta up to 9.0 per cent, Zr up to 2.0 per cent, Nb up to 10.0 per cent, Ni up to 0.4 per cent, Fe up to 1.3 per cent, Co up to 0.9 per cent, Co up to 0.9 per cent, Cr up to 2.0 per cent, the amounts of each of these elements and W being reduced below its stated maximum to the extent that each other such element approaches its stated maximum, and the amount of C used being such as to give a final O content in the alloy of less than 0.005 per cent.  The mixture is melted, e.g. under an absolute pressure not exceeding 500 microns of mercury by arc-melting a sintered rod formed of the mixture.  The alloy may also contain 0.01-0.5 per cent Th. Specifications 656,796, [Group XXII], and 741,361 are referred to.
Patent GB-495843-A (GB)
Title: Electron multipliers
IPC: H03C1/16
Filed: 1937-05-21
Abstract: 495,843. Electron multipliers and circuits therefor. STANDARD TELEPHONES & CABLES, Ltd. May 21, 1937, No. 6854/38. Convention date, July 31, 1936. Divided out of 495,839. [Classes 39 (i) and 40 (v)] Modulation is effected in an electron-multiplier tube by applying one set of currents to the cathode and a control grid and the other set to a secondary-emitting electrode part of which is emissive and part non-emissive, so as to vary the number of electrons falling upon the emitting part. In one arrangement, Fig. 1, low-frequency modulating currents are applied between two of the secondary-emitting electrodes SE4, SE5, the latter having a depressed portion 52 which is non-emissive and on to which about half of the electrons fall when no modulating voltages are applied. In a second arrangement, Fig. 2 (not shown), one terminal of the modulating source is connected to a secondary emitter and the other to a point on the biassing potentiometer. The preceding secondary-emitting electrode is made emissive only over a small central strip (similar to SE2, Fig. 2A), to give a sharp, narrow beam. The high and low frequency circuits may be interchanged or both sources may be of high frequency for heterodyning or detecting purposes. Part of a secondary-emitting electrode may be rendered non-emissive by coating with carbon or by covering with parallel wires 55, Fig. 2A. Specification 495,839 is referred to. The Specification as open to inspection under Sect. 91 comprises also another arrangement, Fig. 3 (Cancelled), in which the modulating potentials are applied to two metal electrodes 57, 58 extending across the electron stream. This subject-matter does not appear in the Specification as accepted.
Patent GB-1282705-A (GB)
Title: Graft copolymer compositions
Inventor: HARMER DAVID EDWARD
IPC: H01L21/027
Filed: 1970-02-12
Abstract: 1282705 Graft polymers DOW CHEMICAL CO 12 Feb 1970 6905/70 Heading C3G A composition comprising (a) a polymer containing at least 50% by weight of polymerized vinyl chloride (b) styrene and (c) a copolymer of acrylonitrile, styrene and a butadiene rubber is used for the production of articles. Components (a) and (b) may be blended, for instance, in a ball mill and component (c) incorporated by similar means to form the composition, which is processed into articles and subjected to ionizing radiation to effect grafting of the styrene on to (a) and (c).
Patent GB-800264-A (GB)
Title: Reel supporting spindle
IPC: F16D13/76
Filed: 1956-03-05
Abstract: 800,264. Securing members to shafts. BURROUGHS CORPORATION. March 5, 1956, No. 6918/56. Class 80 (2). A reel 6 is retained on a hub 9 by three L- shaped levers 12 under the action of leaf-springs 22. The levers are moved into a position to allow removal of the reel by pressing a push button 13 on a member 14 slidable on the hub shaft 32. When re-mounting the reel the latter engages the outer curved edges of the levers 12 to move these parts radially inwardly. A ring 38 of resilient material prevents play between the reel and hub and a pin 8 prevents relative rotation of the hub and reel. The invention is applicable to the reels of magnetic tape recording systems.
Patent GB-731675-A (GB)
Title: Improvements relating to differential electrical switching apparatus
Inventor: MARTIN FREDERICK WILLIAM
IPC: H01H35/10
Filed: 1952-03-18
Abstract: 731,675. Differential switches. LANDIS & GYR, Ltd. March 16, 1953 [March 18, 1952], 7008/52. Class 38 (5). A switching apparatus comprises a shaft 3 driven at a constant speed and a shaft 1 driven at a variable speed, the shafts 3, 1 driving respectively the sun-wheels 7, 6 of a differential gear 5, the planet-wheel 8 driving a pair of toothed wheels 9 upon a difference of speed between the wheels 6, 7. A pin 10 on an arm 11 coacts with the teeth of wheels 9, the arm 11 being pivoted to a part 12 pivoted at 12<SP>1</SP>, and the part 12 being connected by a tension spring 16 to a part 13 pivoted at 13<SP>1</SP>, the movement of the parts 12, 13 being limited.by stops 14, 141 and 15, 151. On clockwise rotation of the wheels 9 the arm 11 is moved by the pin 10 to engage one stop 19<SP>1</SP> of a pair of stops 19, 19<SP>1</SP> on the part 12, and just as the parts 12, 13 snap over-centre to open the contacts 18, the pin 10 slides out of mesh with the teeth of wheels 9 and thus permits continued rotation of the latter. If then the wheels 9 reverse their rotation, the pin 10 is moved in the opposite direction and the switching action is reversed to close the contacts 18. There may be three sets of differential gears each controlling an individual contact set and each connected to the shafts 1, 3 through different gear ratios, whereby a respective contact set is operated in accordance with the difference in speed of the shaft 3 and three different speeds of the shaft 1.
Patent GB-312417-A (GB)
Title: Improvements in and relating to electrical transformers
IPC: H01F27/02
Filed: 1928-03-06
Abstract: 312,417. Ferranti, V. Z. de, and Ferranti, Ltd. March 6, 1928. Transformers.-A transformer casing is provided with a door a at one or both ends as distinct from a removable top, the door opening being just sufficiently large to permit removal of the core and winding structure d without substantially reducing the strength of the casing. Robust vertical columns e, f are provided at the corners and along the sides of the casing and are positioned so as to rest on the side frames of a railway wagon when the transformer is to be transported. The casing is of such a shape that when external accessories such as terminals c, b are removed, it conforms substantially to the railway loading gauge.
Patent GB-565931-A (GB)
Title: Improvements in or relating to portable boilers
IPC: E01C19/08
Filed: 1943-05-04
Abstract: 565,931. Portable boilers. WOELLWARTH, W. D. May 4, 1943, No. 7045. [Class 107] [Also in Group XXXII] A portable boiler for maintaining heated plastics sufficiently warm to be run on to roads comprises a base frame 1 on wheels 13, an upwardly inclined frame 2 on which a gas container 17 is supported by a transverse bar 17a, and vertical members 3 supported by straps 4 and provided with castors 16 ; a heating chamber 5, with handle 12, has trunnions 6 received in open slots 8 in the members 3, the chamber 5 receiving a plasticconta.ining bucket 9, the trunnions 6 then being above the centre of the bucket. The inclined frame 2 has rests 20 bv which the device is supported when changing the gas container 17.
Patent GB-1478115-A (GB)
Title: Infra-red lenses
IPC: G02B13/14
Filed: 1974-02-15
Abstract: 1478115 Lenses PILKINGTON PE Ltd 5 Feb 1975 [15 Feb 1974] 7105/74 Heading G2J A lens for use in the infrared comprises a  positive meniscus element I, Fig. 2, convex to the front, a negative meniscus element II convex to the rear, a positive meniscus element III convex to the front, and a positive element IV having its front surface convex. The whole lens may be composed of the elements I-IV or those may be components of a more complex lens, see additional lens element V in Fig. 2. The last element, element IV, may be meniscus, plano convex, or double convex. The lenses are preferably of germanium, silicon or other infrared transparent material, e.g. thallium bromide. Several detailed examples are given. The examples include embodiments having planar windows incorporated in the lens.
Patent GB-1408207-A (GB)
Title: Electrophotographic member
IPC: G03G5/082
Filed: 1973-02-14
Abstract: 1408207 Vapour depositing photo-conductive alloys INTERNATIONAL BUSINESS MACHINES CORP 14 Feb 1973 [31 March 1972] 7133/73 Headings C7A and C7F [Also in Division G2] A photo-conductive alloy consists of vitreous selenium, 5 to 35 wt per cent tellurium and 0.5 to 20 wt per cent arsenic. The preferred ranges are 25 to 30% Te and 2 to 10% As. In the embodiments the alloy-compositions are 68Se 30Te 2As, 70Se 20Te 10As, and 73Se 25Te 2As. Prealloyed granules of Se-Te-As are vacuum flash evaporated on to a vacuum deposited Se film on an anodized Al substrate. Alternatively the Se-Te-As film is deposited on a layer of trinitrofluorenonepolyvinylcarbazole organic photo-conductor on an aluminized MYLAR (TRADE MARK) substrate.
Patent GB-178277-A (GB)
Title: Improvements in the separation of dust and other mechanical impurities from air or gases
IPC: B01D45/08
Filed: 1921-03-05
Abstract: 178,277. Heenan & Froude, Ltd., and Walker, G. H. March 5, 1921. Dust-collectors. - Dust-laden air or gas is passed through narrow nozzles or openings into collecting chambers wherein the dust is deposited, the air or gas escaping at the chamber-mouths, which are larger than the nozzles; baffle-plates in the chambers prevent eddying. In the apparatus shown in Fig. 3, dust-laden air enters a casing B bv a nozzle A and deposits the dust in a conical chamber B' containing a parallel set of vertical baffles b which prevent eddying; the purified air escapes from the casing. The chamber B<1> may be cylindrical, and the baffles may be disposed radially or in two sets of parallel plates at an angle. A hinged bottom b<1> or a sliding door or hopper may be provided for dust removal. Fig. 5 shows a two-stage collector in which the air entering by a nozzle A and depositing a portion of its dust &c. in a partitioned casing B<1> is caused to deliver the remainder to an annular radially-partitioned collector B<2> before passing to the outlet b<2>. The apparatus may be used dry, or flushed out continuously or at intervals by water, oil, &c.
Patent GB-400495-A (GB)
Title: Improvements relating to spectacles
IPC: G02C1/02
Filed: 1933-03-09
Abstract: 400,495. Spectacles. TUVIN, L. A., HILLIER, R. E., EMONS, R. E., and KIMMEL, G. P., (trading as FUL-VUE SALES), 605, 14th Street, Washington, and EMONS, E. E., Legion Building, Kennett Square, Pennsylvania, both in U.S.A. March 9, 1933, No. 7241. [Class 97 (i).] In spectacles of the kind in which the sides or temple pieces are attached at points above the horizontal centre line of the lenses so as to give an unrestricted lateral field of view, each lens has a straight horizontal top edge 15 and a straight vertical side edge 16, and the temples 6 are attached to the edges 16 near the edges 15. The lower and nasal edges of the lenses are convexly curved and the lower part of each side edge 16 is cut away so as to merge into the lower edge 14.
Patent GB-703334-A (GB)
Title: Improvements in brackets for supporting curtain rails
Inventor: THOMPSON CHARLES HENRY
IPC: A47H1/144
Filed: 1949-03-17
Abstract: 703,334. Suspending curtains. HARRISON (BIRMINGHAM). Ltd. March 17, 1950 '[March 17, 1949], No. 7267/49. Class 52(5) A bracket for supporting flanged curtain rails comprises a strip 10 of metal bent to form an attachment member in the form of a box-member 11, the end parts 14, 15 of the strip being located together by a plate 17 passing through slots therein, the part 15 having a channelshaped end 16 to engage the rail. The lower, rear edge of the box-member 11 is cut to form spring tongues 26. A retaining member 20 is formed at one end with prongs 28 which pass into the box-member and at its other end with portions 32 which engage a T-shaped projection 19 on the plate 17. The ends of the portions 32 engage the rail and the retaining member is moved upwardly by hand into a gripping position where the rear portion of the retaining member engages and is held in position by the spring tongues 26. The curtain rail is thus held positively in the bracket prior to the bracket being secured in position, the retaining member being locked in position when face or top fixing is used. Specification 624,063 is referred to.
Patent GB-539719-A (GB)
Title: Improvements in and relating to indicating and adjusting devices
IPC: H03J1/06
Filed: 1940-04-24
Abstract: 539,719. Gauging-devices. REDIFFUSION, Ltd., and BLYTH, T. J. W. April 24, 1940, No. 7390. [Class 83 (iii)] [Also in Group XXXVI] An adjusting and indicating device for machine tools or the like for moving or varying the setting of adjustable elements, comprises a knob 4, provided with a peripheral flange 7 which rotates between a supporting panel 11 and an overlapping part 10 of a ring 9 fixed on the panel. Indications on the part 10 co-operate with an index on the base of the knob 4. A screw 13 mounted on a bracket 12 or an integral boss on the ring 10 serves to clamp the flange 7 in its adjusted position.
Patent GB-639202-A (GB)
Title: A device for use in compiling lists of possible permutations
IPC: G06G1/00
Filed: 1947-03-19
Abstract: 639,202. Indicators for displaying variable information. BURGESS, C. R. March 19, 1947, No. 7589. [Class 118 (i)] A device for indicating possible permutations of numbers or letters, particularly for football pools, comprises a plurality of strips 3 slidable longitudinally in a frame 1, each strip bearing, vertically-arranged, all possible permutations of three variables, and the frame having a window 2 at one edge 4 of which any one of the possible permutations made up by all the strips can be read.
Patent GB-141879-A (GB)
Title: Improvements in and relating to hose couplings
IPC: B60T17/04
Filed: 1919-06-10
Abstract: 141,879. Westinghouse Brake Co., and Stone, L. G. June 10, 1919. Cup-leather joints; ball. and-socket joints.-A cup. leather or annular gasket joint, particularly for brake. pipes, is sealed by pressure of the fluid in the pipe admitted to a groove or recess at the back of the gasket in such manner as not to act on the edges of the gasket In the ball-and-socket joint shown in Fig. 2, the fluid is admitted by ports 12 to the recess 11 at the back of the gasket 7, which is attached to the socket 6 by means of a flange or rib 9 held by the screw ring 10. The edges of the gasket are shielded as shown from the action of the fluid.
Patent GB-471923-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: D01H7/60
Filed: 1936-03-13
Abstract: Azo dyes suitable for cellulose esters are made by coupling the diazo compound of an amine of the general formula <FORM:0471923/IV/1> in which x and y represent hydrogen or halogen with a 3-halogen-1-di-(oxyethyl)-aniline.  In examples, dyes from the following components are described: 3-chloro- or 3-bromo-1-di-(oxyethyl)aniline; p-nitroaniline (scarlet on acetate artificial silk), 2-chloro- or 2-bromo-4-nitroaniline (bluish red), 2 : 6-dichloro- or 2 : 6-dibromo-4-nitroaniline (yellow-brown). Specifications 274,823, [Class 2 (iii)], 353,592, and 450,099 are referred to.
Patent GB-203629-A (GB)
Title: Pin-and-lug connection for shackles, stanchions, stays, hinges and the like
IPC: F16G15/06
Filed: 1923-03-17
Abstract: 203,629. Alexander, W. March 17, 1923. Hinge pins; hinges r e a d i l y separable about hinge pin. - Bolts or pins A for hinges &c. are retained by a radial projection or key C adapted to be passed through keyways D and then turned out of register therewith to lie against the face of the lug F, the pin being prevented from turning by the frictional engagement of cam-shaped surfaces G on the face of the lug E with counterpart surfaces on the head of the pin. The key may be formed on the unreduced end of the pin as shown in Fig. 1, or on a reduced end K, Fig. 3.
Patent GB-289607-A (GB)
Title: Improvements in the production of rubber draining boards for sinks and means for moulding the same
IPC: A47L19/02
Filed: 1927-03-21
Abstract: 289,607. Harkin, J. P. March 21, 1927. Moulding rubber draining-boards.- Draining- boards for sinks are made of moulded rubber in a moulding and vulcanizing press. Fig. 2 shows a pair of discs with interchangeable well-forming elements 22, 23, adapted to register by means of dowel pins 28 to form a draining board having an upstanding flange 37 on one side and end, a downwardly-projecting flange 33 on the other side and end, and a base 50 with grooves leading to a central draining-well. A liquid-retaining ridge 27<a> may be provided on one or both of the upper surfaces not furnished with the flange 37. In a modified construction the upper flanges 37 are attached to the board after manufacture, the base of the board being grooved along three sides during moulding to facilitate the subsequent attachment of one back flange and one selected side flange in accordance with the design of producing either a right-hand or left-hand board. The dies also are recessed to produce flanges 33 on all four sides of the board, those not being required in any particular instance being filled by stoppieces. Fig. 9 illustrates a mould for forming at will, right-hand, left-hand, or central-well boards with integral flanges. By interchanging the member 50 with the members 40 and 42, the upstanding flange of the board can be transferred to the other side, while by replacing the member 50 by another pair of members 40, 42 a larger central-well board is produced.
Patent GB-540621-A (GB)
Title: Improvements relating to thermal responsive electric switches
IPC: H01H37/70
Filed: 1940-04-30
Abstract: 540,621. Thermal switches. BRITISH THOMSONHOUSTON CO., Ltd., SIMS, W. J., and FELLA, J. H. April 30, 1940, No. 7753. [Class 38 (v)] When an electric kettle or like device becomes overheated a bi-metal strip 4 bends and moves a scissorlike member 13 so that shoulders 17 on it come clear of a slot in a stirrup 10 whereupon a spring 11 moves the stirrup rapidly upwards and ejects a plug from its contacts 7 thereby breaking the heating circuit. The scissor member 13 is also acted on by a spring 18 tending to open the "scissors".
Patent GB-795217-A (GB)
Title: Furnace installations
IPC: F23H3/02
Filed: 1956-03-13
Abstract: 795,217. Boiler furnaces. NAAMLOOZE VENNOOTSCHAP BRONSWERK. March 13, 1956 [March 14, 1955], No. 7841/56. Class 51 (1). In order to prevent slag adhering to the wall 4, the solid-fuel furnace installation of Specification 789,717 is provided with vertical walls 9, Fig. 1, projecting from the wall 4 into the chamber 2. In one embodiment, Fig. 2, rectangular-section pipes 9 are employed, these pipes, like the pipes 4a of the wall 4, being connected to the fuel bunker water-jacket 7 and the collector bar 8. In a second embodiment, Fig. 3, vertical pipes 20, communicating with jacket 7 and bar 8, are provided at regular intervals across the wall 4. Each pipe 20 and its associated pipe 40 mounts vertical strips 21 between which is packed insulating material 22. Vertical fuel holding strips 23 replace the fins 6 of the first embodiment. Specifications 698,097, 698,098, 698,099 and 698,100 also are referred to.
Patent GB-666723-A (GB)
Title: Improvements in or relating to field excitation arrangements for electric alternators
IPC: H02P9/34
Filed: 1949-03-23
Abstract: 666,723. Alternators. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. S. March 22, 1950 [March 23, 1949], No. 7953/49. Class 35. An excitation arrangement for an alternator includes an exciting alternator and a rectifier to feed D.C. to the main alternator excitation and a second rectifier to excite through a Boucherot circuit the exciting alternator from current supplied either by the main alternator or by the exciting alternator itself. The Figure shows a main alternator 10 supplied with D.C. excitation current from an exciting alternator 12 via a rectifier 17, both machines being mounted on the same shaft. The D.C. excitation current for the exciting alternator 12 is fed from the output lines 27, 28 of the main alternator 10 via the transformers 26, 30, 23 and rectifier 21. A condenser 25 is inserted in the circuit of the primary winding 24 of the transformer 23. The capacitance of this condenser and the inductance of the winding 24 are so selected as to provide a Boucherot circuit resonating at the frequency of the main alternator current. In a modification the excitation of the exciting alternator 12 is derived through a Boucherot circuit supplied with A.C. from the exciting alternator itself. In another arrangement, the rectifier supplying excitation current to the main alternator 10 is grid controlled and is controlled by a phase shift network regulated according to the voltage, current and optionally power factor of the main alternator 10. In all the above arrangements the Boucherot circuit may include a saturable reactor or transformer provided with further winding(s) for control purposes.
Patent GB-556221-A (GB)
Title: Improvements in carbon pile resistance regulating systems for dynamo electric machines
IPC: H02P9/20
Filed: 1942-06-12
Abstract: 556,221. Automatic control systems for dynamoelectric machines. PARTINGTON, W., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. June 12, 1942, No. 8076. [Class 38 (iv)] Voltage.-To stabilize a carbon pile regulator CP, its operating coil CPC is in circuit with the regulated field winding AF of the machine A the voltage of which is controlled or with a winding AF2 inductively related to the field winding AF1. The invention is applicable to D.C. generators. A ballast resistor BR may be included.
Patent GB-699847-A (GB)
Title: Improvements in and relating to luminescent materials
IPC: C09K11/72
Filed: 1952-03-31
Abstract: Cd3(PO4)2.2CdHPO4.4H2O is prepare by dissolving 300 grs of C.P. cadmium nitrate tetrahydrate or an equivalent quantity of another cadmium salt in 800 c.c. of distilled water, and dissolving 150 grs. of dibasic ammonium phosphate in another 800 c.c. of distilled water. Both solutions are heated to boiling, 10 c.c. of each solution are added to the rest of the other, and the precipitates allowed to stand for about fifteen hours and filtered off to remove impurities.  The solutions are again heated to boiling and the dibasic ammonium phosphate solution added to the cadmium nitrate solution.  The precipitated cadmium phosphate is filtered, washed with hot distilled water, and dried.
Patent GB-362281-A (GB)
Title: An improved method of laying ropes of cable bridges
IPC: E01D11/02
Filed: 1931-03-17
Abstract: 362,281. Bridges. FELTEN & GUILLEAUME CARLSWERK AKT.-GES., Mulheim, Cologne, Germany. March 17, 1931, No. 8151. Convention date, April 1, 1930. [Class 20 (i).] Cables for suspension bridges are run out on temporary cables which are laid from bank to bank and support trollies with gripping devices for the cables, which are then released from the trollies and raised or lowered into correct positions on the supporting pylons. The cables b are supported by trollies c which run on auxiliary cables a stretched from bank to bank and, when in position, are raised by pylon cranes d to their proper positions on the supporting pylons. The temporary cables may be supported on supports f on the tops of the pylons and the trollies h are provided with grippers k lying between the temporary cables from which they are released to correct positions m on the pylons.