baber/WOPTO huggingface dataset:
Patent GB-526613-A (GB)
Title: Improvements in the production of glass vessels
IPC: C03B23/11
Filed: 1939-03-22
Abstract: 526,613. Shaping glass tubes. DICHTER, J. March 22, 1939, Nos. 9076 and 9077. Convention dates, March 23, 1938 and April 14, 1938. [Class 56] Relates to a method of forming vials, ampoules, and like vessels by softening a portion of a glass tube and drawing the ends of the tube apart so as to constrict the softened glass and to form a length of reduced diameter. According to the invention, the zone of heating is moved towards one end of the tube during drawing to enable a constricted portion of uniform diameter to be obtained. The invention may be applied to a machine of the kind described in Specifications 364,211, 423,419, and 477,552 in which a glass tube 9 is held and rotated by chucks 8, 10 carried by a revolving frame. A tube 9 is heated by burners 39, and when the glass has softened, a shaping roller 55 is pressed against the softened part to constrict it. The chuck 10 is then lowered by a stationary cam 42-44 to draw-out the tube. The burners 35 slide on vertical rods and are connected by a rod 49 with a roller running on a stationary cam 48. As the tube is drawn out, the burners are raised by the cam so that more of the upper end of the tube is heated. After the drawing, the gas supply is cut off and a groove is formed in one or both shoulders on the tube by a separate burner 62 and a tool 61. The groove may also be formed by a ridge on the roller 55 and it serves to facilitate the subsequent division of the tube. The burners 35 may also be used to divide the tube and they may be moved to any convenient position for the purpose. A constriction with sections of different diameter may be produced by varying the speed of movement of the chuck 10, by moving the burners 35 along the tube during drawing, or by varying the supply of gas to the burners. The invention may be applied, also, to constructions in which the tubes are arranged horizontally. Specification 505,744 also is referred to.
Patent GB-417260-A (GB)
Title: Improvements in carburetors and vaporizers for internal combustion engines
IPC: F02M21/10
Filed: 1933-03-25
Abstract: 417,260. Carburetters and vaporizers. SHORE CORPORATION, 2, Hancock Street, Quincy, Massachusetts, U.S.A.-(Assignees of Smith, W. S. ; 2, Hancock Street, Quincy, Massachusetts, U.S.A.) March 25, 1933, Nos. 9093, 9094, and 9095. Convention dates, March 28, 1932. [Class 7 (iii).] A combined carburetter and vaporizer for fuel oil comprises an idling nozzle in the air stream, one or more secondary nozzles supplying oil to the air stream, a valve adapted to open or close the secondary nozzles and simultaneously to control the air supply around the nozzles and serve as a throttle, a mixture conduit having a cylindrical portion concentric with the axis of the idling nozzle, and a vaporizer associated with the conduit to promote vaporization of any liquid globules entrained in the mixture. Between a vertical induction pipe or riser 2, Fig. 2, and the throat passage 40 of the carburetter is disposed an electric heating coil 16 used to heat the heavy fuel at starting. At its lower end, the passage 40 narrows to provide an aperture of triangular shape through which air and fuel, from nozzles 32, are drawn. Of the six nozzles, four are disposed in line on a block 30 and two are opposite one another and slightly offset therefrom. They terminate flush with the upper surface of a plate 36 also formed with a triangular opening, the edges of which are cut away to give a Venturi effect. A throttle 38 slides on the plate 36 to cut off fuel and air simultaneously. The right hand nozzle is disposed in the apex of the triangular opening to serve for idling and the axis of the riser 2 coincides with this nozzle to prevent particles of fuel from impinging on the walls of the riser, the fuel continuing upwards until it strikes the top of a tee-piece 4 in the exhaust manifold 10. As the throttle 38 is moved to the left, it uncovers the nozzles successively and simultaneously exposes an increased area for the passage of air. The two offset fuel nozzles provide additional fuel for starting and for use during acceleration and are disposed one at each side of the idling nozzle and inclined thereto. A spring-pressed valve 46, operated from the dashboard through a cam, controls the starting nozzle. Connected to the throttle control lever 54, Fig. 4, is a piston 60 adapted, when the throttle is moved towards the closed position, to draw fuel past a valve 57 into a chamber 58, and to discharge it past a spring- pressed valve 62, the stem of which may be engaged by the piston, through the acceleration nozzle. As applied to a six cylinder engine, three carburetters are used, each supplying two cylinders, and the tee-pieces are joined together as at 78, Fig. 8, restricted orifices 80 being provided therebetween to reduce surging. The exhaust jacket 86 is formed of aluminium alloy and may be surrounded by a water jacket 88 of the same material. Deflectors opposite the exhaust inlets may prevent excessive heating of the tee-pieces.
Patent GB-177796-A (GB)
Title: Improvements in and relating to calculating machines
IPC: G06G1/08
Filed: 1922-03-30
Abstract: 177,796. Odier, A. I. March 31, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Slide-rules of the flat-spiral kind graduated for use in connection with monetary exchange,. wages or costs, comprises discs 1, 2, bearing on the outer faces spirals logarithmically graduated with double scales of, say francs and centimes. and pounds, shillings and pence, and mounted to turn relatively to each other in a clamp 5, having index pointers 6, 7. On the inner face,. the disc 1 has a circular logarithmic scale of rates of exchange, visible through an opening 4 in the disc 2 with markings on the rim, so that the discs may be set according to the current rate. The two spiral scales may be placed on opposite faces of a single disc, two centrally-pivoted pointers being provided to co-operate with them. Microscopes may be mounted on the instrument to increase reading accuracy.
Patent GB-273415-A (GB)
Title: Improvements in and relating to glazed tile fireplaces
IPC: F24B1/198
Filed: 1926-04-08
Abstract: 273,415. Shepherd, T. April 8, 1926. Open fireplaces. - The metallic interior or edging of a tiled fireplace front is made of rolled angle iron, steel, or other metal, cut and bent as shown in Fig. 1 and secured by pins or bolts to the cement or plaster. The corners are filled by square portions, either cast with projecting arms to hold them in position, as shown in Fig. 3, or stamped with inturned edges, as shown in Fig. 2A, to key to the plaster. In a modification, the interior is reversed back to front, one flange being behind the tiling and the edge of the other flange being flush with the face of the tiles.
Patent GB-794511-A (GB)
Title: Improvements in and relating to non-return valves
Inventor: BOLT PHILIP CHARLES
IPC: F16K15/14
Filed: 1955-03-30
Abstract: 794,511. Valves. NORMALAIR, Ltd. March 28, 1956 [March 30, 1955], No. 9277/55. Class 135. A non-return valve comprises a rubber tube a with one end recessed, as shown, and provided at that end with flaps c of rubber, &c. The flaps are secured to the tube at d. The tube a may be covered by a further rubber tube or by a rigid tube formed with holes through which the inner tube may be kneaded in order to free the valve from ice. The apertures in the outer tube may be covered by a further thinwalled rubber tube.
Patent GB-1003190-A (GB)
Title: Improvements in or relating to electronic amplifiers
Inventor: PARKER DENNIS AMERENA
IPC: H03F1/36
Filed: 1963-03-08
Abstract: 1,003,190. Pulse delaying circuits. CAWKELL RESEARCH & ELECTRONICS Ltd. March 9, 1964 [March 8, 1963], No. 9367/63. Heading H3T. A circuit for operating an indicating, recording or actuating device in response to an operating input signal comprises a D.C. amplifier 1 having a feedback loop comprising an impedance, i.e. resistor rf and a switching device S, between the junction of which and a point of steady potential is connected a capacitor C 0 ; the feedback is such as to maintain the sum of the amplifier input signals constant in the absence of an operating input signal when switch S is closed. The potential to which Capacitor C 0  charges is dependent on this sum and also includes errors due to the amplifier, which Inay be of valve or transistor type; by deriving the reference voltage for an output device 2 from this capacitor, the errors may be eliminated. Used as a voltage comparator, an adjustable bias is applied to the input of the amplifier, which may comprise a long-tailed silicon transistor pair from potentiometer Vb via resistor r 3 ; this bias is so adjusted that the amplifier input terminal is at zero potential and little current flows in feedback resistor rf, capacitor C 0  being returned to earth. Two signals to be compared are applied in opposite senses to terminals A, B respectively, and simultaneously switch S is opened so that the amplifier gain is high: it is arranged so that no output occurs until the second signal slightly exceeds the first, whereupon the amplified difference causes output device 2, which comprises a trigger circuit, to operate. Diodes 3, 4, connected between the amplifier input and tapping points on potentiometers between the output terminal and sources of negative and positive potential respectively, act as feedback clamps. By using as a second signal a ramp voltage increasing uniformly at a known rate from a predetermined value the instant of operation provides an indication of the magnitude of the first signal. Switch S is operated at fixed intervals, e.g. once per minute, by a signal from a delay circuit: after the trigger circuit has operated switches external to the comparator restore the input voltages at terminals A, B to zero and reclose switch S.
Patent GB-1358256-A (GB)
Title: Mining machinery
IPC: E21D9/10
Filed: 1972-02-29
Abstract: 1358256 Mineral mining machines ANGLOTRANSVAAL CONSOLIDATED INVESTMENT CO Ltd 29 Feb 1972 [3 March 1971] 9369/72 Heading E1F Stope mining machinery comprises a carriage that can be moved across the face of a stope 4 one or more rotors 1, 2, each rotor being driven by motor means on the carriage about an axis inclined to the stope floor and swing- ably mounting rock-cutting hammers 3, the hammers being balanced to avoid shock loading of the pivots by which the hammers are secured in the rotor. Preferably the hammers are those described in the referred to Specification 1346394. The axis of rotation of a rotor is preferably inclined to the floor at an angle of not less than 45‹, and by choice between 70‹ to 110‹. The machinery may be slidably mounted on a conveyer extending the length of the stope face and may be self propelled or cable or chain hauled across the face. The rotor or rotors may be so arranged on the carriage that cutting can occur in either direction of traversal of the carriage across the face.
Patent GB-1219080-A (GB)
Title: Clutch operating mechanism
Inventor: DAVIDSON JOHN BRUCE
IPC: F16D25/08
Filed: 1967-02-28
Abstract: 1,219,080. Friction clutches; positive clutches. COVENTRY GAUGE & TOOL CO. Ltd. 26 Feb., 1968 [28 Feb., 1967], No. 9423/67. Heading F2C. Friction discs 2a, 2b, or positive dogs (not shown), clutching a driving hub 1 to a driven spider 5, are engaged by admitting pneumatic or hydraulic pressure to a chamber 9 formed between a non-rotatable (i.e. stationary) stepped complementary annular piston 7 and cylinder 8 assembly freely mounted on the hub 1 by needle roller journal and thrust bearings 12, 13 and 14, the cylinder 8 acting on a splined presser plate 4 through the bearing 14, reaction of the cylinder 8 and piston 7 being taken by a backing plate 3 and bearing 13 retained on the hub 1 by circlips 15. Interposed Belleville springs 18 separate the clutch discs 2a, 2b on disengagement.
Patent GB-629583-A (GB)
Title: Improvements in or relating to ventilators for vehicles
IPC: B60H1/26
Filed: 1944-05-18
Abstract: 629,583. Ventilators. ROE, J. J. A. May 18, 1944, No. 9537. Divided out of 587,937. [Class 137] In vehicle ventilators having a louvred cover 20 arranged over an aperture in the body, some 23, of the louvres face forwardly and the rest 24 rearwardly, the interior of the box-like cover and the aperture being divided by a transverse partition 26, the lower vertical end of which is engaged within an N-shaped strip 28 extending across a tube 27. Depending from the other loop of the strip a partition 36 is secured to a disc 33 supported beneath the aperture; separate paths are thus provided for air entering through louvres 23 and the air extracted through louvres 24. A baffle plate 25 overlapping the edges of the aperture is disposed between it and the cover and a watercollecting channel 29 formed by a flanged tube within the aperture permits of discharge of water through holes 30. The baffle plate may be in separately hinged halves enabling either set of louvres to be rendered inoperative, or the louvres themselves may be hinged or have adjacent shutters. The cover may be swung open about a hinge 31.
Patent GB-1086679-A (GB)
Title: Improvements in bulbs for cathode ray tubes, especially television tubes
IPC: H01J29/86
Filed: 1966-03-04
Abstract: 1,086,679. Cathode-ray tubes. SOC. DES VERRERIES INDUSTRIELLES REUNIES DU LOING. March 4, 1966 [March 4, 1965], No. 9615/66. Heading H1D. In a cathode-ray display tube the edge of a flat luminescent screen 2, e.g. of plate glass, is cemented between the face-plate 1 and the cone 3 in order to lend reinforcement to the bulb. Additionally the face-plate may be relatively thin and relatively flat. The face-plate has a flattened peripheral strip 1a of a width less than the wall thickness of the cone. Holes 4 are provided in the screen for purposes of evacuation. In another embodiment, Fig. 3 (not shown), the screen is not provided with holes- and the space above the screen is separately evacuated and may be filled with a transparent polymerized resin of the same refractive index as the glass. The cone may be of glass or metal.
Patent GB-288812-A (GB)
Title: Improvements in pattern surface mechanism for looms
IPC: D03C19/00
Filed: 1927-04-08
Abstract: 288,812. Hodgson, Ltd., G., and Elsworth, J. April 8, 1927. Addition to 229,818. Pattern surfaces.-Pegs a of the kind claimed in the parent Specification are shaped so that the base portions b may rest on the lag f, while hooked portions c press firmly against the edges of rectangular openings d made in the lag. The hooks c retain the peg in position in whichever direction the lag is operated. The pegs are placed in position by pinching them with pliers &c. so that the hooks c approach one another sufficiently to allow them to pass through the aperture d.
Patent GB-431421-A (GB)
Title: Improvements relating to electric switch-plugs
IPC: H01R13/707
Filed: 1934-03-28
Abstract: 431,421. Plug couplings combined with switches. BAKER, H. N., and PARSONS, C. W., c/o Kersons Manufacturing Co., Kingsbury Road, Minworth, Birmingham. March 28, 1934, No. 9667. [Class 38 (i)] A fastening-device for gripping a pin m inserted into one of the sockets n of a combined switch and socket member, comprises a tooth or sharp edge r moved by a spring t on closing of the switch a into a gap in the socket n so as to engage the pin on one side, the frame o, Fig. 1, or 2, Fig. 7, carrying the tooth &c. r also having a pivot p that engages the other side of the pin or socket so that a pull on the pin m causes the grip thereon to be increased. A lever q on the frame o is raised by a sector j on the switch lever a when the switch is opened, thus withdrawing the tooth r from engagement with the pin. In the form shown in Fig. 1, the pivot p of the frame o is mounted in slots in a support s and the tooth r consists of a transverse plate with a sharp edge. A projection x entering the socket n is displaced by the pin m about a pivot w<1>, thus lifting an arm v out of the path of the sector to allow the switch to be closed. In the modification shown in Fig. 7, the tooth r is formed on a plate 2 located in a slot in the socket n against which the pivot p is held by the compression spring t that also moves the tooth into engagement with the pin m when the arm q is allowed to drop on movement of the sector in closing the switch. The switch-locking device comprises a projection 7 displaced by insertion of the pin m against the action of a spring 8, thus sliding a bar 5 in guides 6 and removing a projection 11 from the path of the sector j so that the switch can be closed only after insertion of the plugmember. According to the Provisional Specification, the pivot p may be replaced by a second tooth or sharp edge, and the switchlocking device may consist of a spring-controlled rocking abutment actuated by a lever that is moved by insertion of the pin.
Patent GB-602879-A (GB)
Title: Processes and compositions for the electrodeposition of indium alone or with other metals
IPC: C25D3/54
Filed: 1945-04-18
Abstract: Indium sulphamate for use in dry compositions or baths for electrodeposition of indium with or without other metals (see Group XXXVI) is prepared by adding sodium hydroxide to an aqueous solution of indium trichloride, separating the precipitate of indium hydroxide from the sodium chloride solution, and adding it to a solution of sulphonic acid.  The indium sulphamate solution formed may be used directly or vacuum-evaporated to recover the solid salt.ALSO:Alloys of the following composition are used as anodes in the electrodeposition of alloys of lead and indium (see Group XXXVI): indium 95 per cent, lead 5 per cent; and lead 96 per cent, indium 4 per cent.
Patent GB-212140-A (GB)
Title: Improvements in and relating to brushes
IPC: B25G3/30
Filed: 1923-04-09
Abstract: 212,140. Stevens, H. H. April 9, 1923. Multiple-support and reversible handles; fixing by screwed sockets with locking-devices. - Brushes with transverse heads braced to the handle by inclined struts, have the lower ends of the struts engaged in holes in the head, and the upper ends in sockets on a collar clamped adjustably on the handle. As shown, the handle 5 has a screwed spigot 6 which may be screwed into either of the screwed sockets 4 in the head 1, and locked by lugs 8 on a collar 7 clamped on the handle bv a bolt 9. The lower ends 18 of the struts 17 are bent to engage in two of the holes 11 in the head, and the upper ends 19 to engage sockets 13 on a split collar 12 clamped on the handle by a bolt. The handle may be reversed by changing from one socket 4 to the other, and the struts 17 to the corresponding holes 11.
Patent GB-1259862-A (GB)
Title: Tamper-proof expansion fastener
IPC: F16B13/12
Filed: 1969-02-24
Abstract: 1,259,862. Wall plugs. U.S. EXPANSION BOLT CO. 24 Feb., 1969 [23 Feb., 1968], No. 9786/69. Heading F2H. A tamper-proof expansion fastener comprises an expansion plug 10 having a head 12 and a shank 14; and a nail 50 having a head 52 to encompass the plug head and a shank 54 for entering into and expanding the plug shank 14. The plug 10 which may be provided with a diametral slot or two leg portions (Fig. 8, not shown) may be provided on the exterior surface of the shank 14 with a buttress thread and the head 12 may have two planar surfaces or be provided with a frusto-conical surface (Figs. 4, 5, not shown). An entrance bore (20) (Fig. 2, not shown) provided in the plug 10 for receiving the pointed end of the nail 50 may be arcuately or conically tapered and provided with circumferentially spaced, longitudinally extending buttresses (22) (Figs. 4, 5, not shown) and with an enlarged portion. The nail 50 may have a domed head 52 provided with an annular recess 62 for accommodating the head 12 of the plug 10, buttresses on the shank 54, a smooth portion 58 and a pointed tip 56.
Patent GB-856588-A (GB)
Title: Process of producing titanium-group metals
IPC: C25C3/26
Filed: 1957-03-26
Abstract: 856,588. Obtaining titanium and like metals, electrolytically. INTERNATIONAL METALLURGICAL CORPORATION. March 26,1957 [April 10, 1956; June 20, 1956; Aug. 2, 1956; Aug. 20, 1956; Jan. 15, 1957; Jan. 30, 1957; Feb. 8, 1957], No. 9845/57. Class 41 The process of depositing pure titanium or like metal from scrap material by electrolysis and suspending the scrap material in an electrolyte consisting of molten alkali metal or alkaline earth halide, is improved by the following steps, (1) the molten electrolyte contains also dissolved alkali metal up to 2À5% by wt., (2) a salt of titanium is also present, (3) the scrap titanium is in comminuted form and has a surface at least 1 sq. ft. per lb. wt., (4) Current density at the cathode is in the range 100 to 2000 A.S.F., and at the anode not exceeding 50 A.S.F., and the effective area of the anode is at least 10 times that of the cathode, (5) an inert atmosphere is used. The process may be used to refine Ti, Zr, Cr, V, and Hf. Preferably the alkali metal is pre-mixed with titanium halide in molten state at 500‹C. and the resulting melt containing 10-20% of Na is added to the main body of the molten electrolyte, e.g. NaCl or SrCl 2 , in such proportion that the average valency of the titanium present is in the range 2 to 3À5. The powdered scrap may be formed by treating with oxygen and powdering, or by granulating by pouring the molten scrap in fused NaCl. The powdered scrap is suspended in a basket immersed in molten electrolyte at 850‹ to 900‹C. and the anode and cathode are mounted close together. The titanium scrap dissolves. in the electrolyte and is deposited on a steel rod cathode, first as a thin coating of Ti, then a coating of Ti and salts, and finally as a heavy deposit of Ti crystals. The titanium content of the molten bath is controlled by chemical test to maintain the concentrations in the range 3 to 7 %.
Patent GB-849415-A (GB)
Title: "a method of producing viscose"
IPC: D01F2/08
Filed: 1958-03-27
Abstract: Viscose is produced by mixing air-dry cellulose in fibrous form with an emulsion of carbon disulphide in water and then mixing the mixture thus formed with an aqueous solution of caustic soda of such concentration that the ratio of the amount of caustic soda in the final mixture to the total amount of water in the mixture is sufficiently high to cause the cellulose, carbon disulphide and caustic soda to react together to form sodium cellulose xanthate, the xanthate thus produced being then completely dissolved by the addition to the mixture of either water or a dilute aqueous solution of sodium hydroxide.  Known surface active emulsifiers may be added to the water or to the carbon disulphide used in preparing the emulsion.  The emulsion may be subjected to vibrations of ultra-sonic frequency.  Instead of a carbon disulphide emulsion in water, a solution of carbon disulphide in an organic solvent which is miscible with water or in a mixture of such organic solvents may be used.  In the example, 200 kg. of dry fibrous cellulose is mixed for 15 minutes in a xanthate kneader with an emulsion formed from 596 kg water and 72 kg carbon disulphide in which 2 kg of ammonium oleate have been dissolved. 312 kg of a 54% aqueous caustic soda solution is added, the mass is further mixed for 90 minutes without allowing the temperature to rise above 25 DEG C., 1530 kg of water are incorporated in the mass over a period of 75 minutes and finally the whole mass further mixed for 60 minutes without allowing the temperature to rise above 20 DEG  C.
Patent GB-248203-A (GB)
Title: Improvements in brake operating means
IPC: F16D65/14
Filed: 1925-04-16
Abstract: 248,203. Fornaca, G. April 16, 1925. Blocks and shoes acting on drums.-In a brake of the expanding-shoe type, the shoes 1, 2 bear freely at one end against a fixed pivot 10, and a cam 5, or other operating member, adapted to open the shoes is carried bv one of them. As shown, the cam 5 is carried by the shoe 1 and is secured to one end of a pin journaled in a support integral with the shoe 1 and provided at its other end with an operating lever 7. The brake is equally effective for both directions of rotation of the drum 4.