baber/WOPTO huggingface dataset:
Patent GB-255843-A (GB)
Title: Improvements in steam turbines
IPC: F01D1/24
Filed: 1926-07-06
Abstract: 255,843. Allmõnna Svenska Elektriska Aktiebolaget. July 22, 1925, [Convention date]. Stuffing - boxes substitutes for.- Two sections of dif ferent pressure o the labyrinth pack ing 7 between roto: and stator of a steam turbine are cross-connected by permanently open pipes 10, 11 to twc sections of different pressure of the blade system 5, 6 so that steam heated by passing through the whole or part of the labyrinth packing is led to a section of lower pressure of the blade system, while steam of a higher pressure is led from the blade system to the packing to replace the steam thus withdrawn and at the same time to cool the packing. An additional labyrinth packing 12 is provided in which the rotary ring 13 is thicker than the stator ring 14, while the ribs 16 are of greater thickness than the ribs 15, the latter being formed with packing edges 17. With this construction, any heat production in the packing causes the disc 14 to increase in diameter more than the disc 13, thereby reducing the tendency of the edges 17 to cut into the ribs 16.
Patent GB-529881-A (GB)
Title: Improvements in or relating to multi-grid electron discharge tubes
IPC: H01J19/40
Filed: 1939-06-09
Abstract: 529,881. Thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and YOUNG, A. J. June 9, 1939, No. 17017. [Class 39 (i)] In multi-grid electron discharge tubes, particularly radio-frequency pentodes, the electrode assembly is mounted at the end remote from the seal by means of a slotted insulator S, of steatite &c. and the anode 7 and control grid 3 are screened from one another by a shield 6, Fig. 5, with lugs 6a passing through the slots. A similar insulator may be provided at the end of the mount adjacent the seal.
Patent GB-990830-A (GB)
Title: Rotary tablet press having means to rotate the plungers
IPC: C11D17/00
Filed: 1962-05-03
Abstract: 990,830. Rotary tablet presses. PROCTER & GAMBLE CO. May 3, 1962 [May 5, 1961], No. 17099/62. Heading B5A. In a tablet press in which tablets are formed between upper and lower punches 15, 22 in vertical cavities 18 in a movable die head 16 when the punches 15, 22 are forced together by pressure rolls 29, 30, means are provided to rotate the punches at the point of maximum compression, thereby preventing the tablet material from sticking to the punches. The punches 15, 22 are rotated in opposite senses by rollers 31, 33 (Fig. 5) contacting cam surfaces on the punches 15, 22. The upper punch 15 is rotated back for the next stroke, as it is elevated after compression by a cam surface 28 fixed to the frame, by a pin 38 engaging a slanting edge 37 of a slot 35 in the punch 15. The lower punch 22 is rotated back just before the next compression by a roller 39 contacting a cam surface 40 on the punch 22. A pin 42 engaging a slot 41 in the lower punch 22 limits rotation. Fig. 7 shows an alternative rotation and return mechanism, in whicha projecting member 43 on each punch strikes a fixed cam surface 44 to return it (dotted line position), then strikes a roller 46 (full line position) during compression to rotate it. Specification 957,868 is referred to.
Patent GB-263085-A (GB)
Title: Improvements in or relating to boat lifts
IPC: E02C1/04
Filed: 1926-07-08
Abstract: 263,085. Soc. Technique d'Etudes et d'Enterprises pour l'Industrie, and Huguenin, A. Dec. 21, 1925, [Convention date]. Canals and rivers.-Boat elevating apparatus comprises a floating chamber a similar to a floating dock which rises or falls in a lock chamber and makes close contact at its ends with the end walls of the lock. The chamber a is immersed in a mass of water d, Fig. 3, which fills the space between the side walls e of the lock and the walls of the floating chamber. Conduits f connect the lock with the downstream part of the canal, and each conduit contains a rotary pump g driven by an electric motor h which can be driven at any speed in either direction. Upper and lower gates k, l, which may be of any type, are provided. The gates are operated in the usual manner when taking a boat through, and the level of the water d in which the chamber a floats is regulated by operating the pumps g in the required direction, so as to bring the boat floating in the structure a level with the reach it is about to enter.
Patent GB-241285-A (GB)
Title: Improvements in internal combustion engines
IPC: F01K1/02
Filed: 1924-07-17
Abstract: 241,285. Martinka, M. July 17, 1924. Generating combustion products under pressure.-In a generator of products of combustion under pressure a displacer u, Fig. 3, works in a cylinder a, the lower and upper sides of which form hot and cold chambers, connected by a pipe i with cooler e<1>, the main body of gases passing through a regenerator R. The system works on a closed cycle at a super-atmospheric pressure. Gases at 35 atmospheres pressure pass to a receiver d<2>, thence to a motor such as a turbine a<2>, and to a low pressure receiver d<1> wherein the gases are at 10 atmospheres; the gases re-enter the cylinder from the receiver d<1> and pass back to the hot chamber through the regenerator R. The iresh charges of air and gas are supplied by pumps q, b, through reservoirs v, z measuring pumps z<2>, z<1> and auxiliary regenerators r<2>, r<1>. The surplus products pass to the motor k through the regenerators measuring pumps y<3>, y<4> and reservoir w; the motor is used to drive the pumps and the displacer u. The pressures on the measuring pumps are balanced by connecting the rear chambers of the pumps to some part of the working system responsive to the pressures, for example the cold chamber in the cylinder a<1>. Instead of the cooler e<1> in the pipe i, a cooler e<2> may be used in the low-pressure reservoir.
Patent GB-936688-A (GB)
Title: Improved apparatus for delivering controlled quantities of material to a receiving station
IPC: B65G69/00
Filed: 1961-05-11
Abstract: 936,688. Discharge of foundry sand from hoppers. E. BUHRER. May 11, 1961 [May 13, 1960], No. 17234/61. Class 78 (1). Sand is delivered by endless belt 52 into hopper 23 which discharges it through grating 74 on to a strewing surface in a foundry. The discharge is regulated to a predetermined depth by the operation of two arcuate gates 26 and 27. Gates 26 and 27 are pivoted at 28 and driven independently by gears 39 and 41 from respective motors 40 and 42. As shown, motor 42 is operated to turn gate 27 in a counter-clockwise manner and, after the operation of a time relay, motor 40 is operated to cause gate 26 to also rotate in a counterclockwise manner. As a result, the two gates move counter-clockwise with a gap between. The movement of the gap across the outlet 74 permits a uniform deposit of sand on the receiving surface. The gates are stopped respectively when cams 34 and 33 engage contacts 37 and 36. At the next discharge the two gates then move clockwise across the outlet to allow sand to flow through the gap. The gap between the two gates and through which the discharge is made can be varied to suit circumstance.
Patent GB-717419-A (GB)
Title: Improvements in reservoir pens
IPC: B43K7/02
Filed: 1951-07-20
Abstract: 717,419. reservoir pens. WELCH, S. P. July 25, 1952 [July 20, 1951; Aug. 27, 1951], Nos. 17239/51 and 20113/51. Class 146(3) In a ball-point or other reservoir pen having an ink reservoir in the form of a collapsible sac, the sac 11 is compressed progressively to force ink at all times to the writing point by means of a ball 19 which can be moved progressively along the casing 10 by means of a slider 17, 18 to press a resilient strip 14 against the sac. The strip 14 is free at its forward end, and gripped at its rear end between an end plug 15 and the casing 10. The slider comprises a shoe 17 having a button 18 which projects through a longitudinal slot 16 in the casing: the ball 19 is loose and rests on the strip 14 in front of the shoe.. The cap 20 is also slotted at 21 to accommodate the button 18 when the latter is at the rear end of the casing. As shown, the writing point is a ball carried in a unit 12 which fits into the front end of the sac 11, and is retained by a screw-threaded conical member 13. A felt pad (not shown) is provided within the ink duct in the unit 12 to prevent ink leaking past the ball when the pen is not in use.
Patent GB-1458734-A (GB)
Title: Manufacture of hollow turbomachinery blades
IPC: B23P15/04
Filed: 1974-04-19
Abstract: 1458734 Making turbine blades GENERAL ELECTRIC CO 19 April 1974 [27 April 1973] 17291/74 Heading B3A A method of making a hollow turbo-machine blade comprises providing a hollow aerofoil blade with a flared open tip 46, placing a tip cap 60 within the flared open end and crimping the open end inwardly to secure the tip cap to provide a blade having a smooth aerofoil outer contour over its length. The interior walls of the blade are formed with seats 52, 54 and a plurality of rabbets 56, 58 for locating and securing the tip cap 60. The cap is formed with holes 68 around its perimeter to direct cooling fluid against the blade walls in the region of the rabbets. The tip cap may be brazed when in position for improved sealing.
Patent GB-742361-A (GB)
Title: Improved process for making moulds for "cire-perdue" precision casting
IPC: B22C7/02
Filed: 1952-07-09
Abstract: 742,361. Moulding processes. REGIE NATIONALE DES USINES RENAULT. July 9, 1952 [Aug. 30, 1951], No. 17347/52. Class 83 (1). A wax pattern precoated with a refractory powder in a solution of alkaline silicate is rendered insoluble, before investing with a mixture of sand, binder and water, by treating with a solution of a volatilizable acid, or a salt of ammonium, or of a weak organic base which is easily hydrolysable, in a solvent which does not dissolve the alkaline silicate. The substance should leave no residue on heating and may comprise a salt of a weak base, e.g. hydrochloric acid in equal parts of ethyl alcohol and water, or ammonium nitrate in methyl alcohol. Acetic, oxalic and nitric acids are also mentioned. The solution is applied to the dried precoated pattern by spraying or dipping.
Patent GB-459698-A (GB)
Title: Improvements in and relating to laminated brushes for dynamo-electric machines
IPC: H01R43/12
Filed: 1936-06-22
Abstract: 459,698. Brushes for dynamo-electric machines. SIEMENS - PLANIAWERKE AKT.-GES. FUR KOHLEFABRIKATE, 129, Herzberstrasse, Lichtenberg, Berlin.. June 22, 1936, No. 17360. Convention date, July 23, 1935. [Class 35] [See also Group XXXVI] The individual laminations 1-3 of a laminated brush are cemented together at 8, 9 by an adhesive consisting of a mixture of arti ficial resin solution and an acceler ating substance which causes the mixture to harden without supple mentary pressure and heat treat ment. An inorganic acid sucl as hydrochloric or sulphuric acid may be employed as the accelerator. The pores of the lamina tions may be freed from air by evacuation before the cementing which may be done while the laminations are assembled in a j ig. In order to avoid too rapid setting with consequent loss of the excess material, the impregnation may be carried out at low temperatures. After the hardening treatment, the brush may be raised to the average temperature expected to occur in normal use, to avoid subsequent variations in dimensions. The end laminations 1, 3 are connected to flexible leads 7 by hollow rivets 4 insulated at 5 from the others. The conductor of the centre lamination 2 is inserted in the bore of the appropriate rivet which is insulated from the end laminations.
Patent GB-350717-A (GB)
Title: Photographic objectives
IPC: G02B9/04
Filed: 1930-06-05
Abstract: 350,717. Lenses. SHORE, A. F., 50, West 86th Street, New York, U.S.A. June 5, 1930, No. 17409. [Class 97 (i).] A photographic objective comprises two cemented doublets of approximately equal positive power, the front doublet being a meniscus having external radii of approximately 20 per cent of the focal length of the complete lens and the back doublet a meniscus having radii approximately 30 per cent of the complete focal length. The refractive indices of the corresponding components of the doublets are the same, and the radius of the cemented surface of the front lens is about 3À7 times that of the outer surfaces of this lens. Numerical data for a lens having an aperture of F/8À5 are given in the Specification.
Patent GB-562186-A (GB)
Title: Improvements in outer covers for pneumatic tyres
IPC: B60C7/04
Filed: 1942-12-08
Abstract: 562,186. Wheel tyres. LEVY, B. Dec. 8, 1942, No. 17446. [Class 144 (ii)] In an outer cover for a pneumatic tyre wherein one or more endless canvas bands have circumferential side flaps which are turned back over bead wires, the side flaps encase or are superimposed on an outer tread layer. As shown in the Figure, twin bands 1, 10 are used. The two bands are stretched, on a former, over bead wires 3 and the longitudinal edges of the outer band 1, after folding over the bead wires, are glued down in a superimposed position 6. The edges of the inner band 10 are carried outwards in the form of wings 11 to enclose a number of laminated strips 12 of leather. Rings or segments 13 of leather may be added and the assemblage secured by rivets 14, 15. The canvas bands may be perforated adjacent each edge in order to prevent rucking when they are stretched over the former.
Patent GB-660434-A (GB)
Title: Compositions for and method of impregnating fibrous materials to render the materials resistant to attack by micro-organisms
IPC: D06M13/188
Filed: 1949-07-01
Abstract: 660,434. Proofing against bacteria &c. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. July 1, 1949 [July 23, 1948], No. 17500/49. Class 140. A composition for impregnating fibrous material to render it resistant to attack by micro-organisms comprises a heavy metal salt of an organic acid, a hydrocarbon solvent, an organic solvent soluble in both water and oil and an oil-soluble capillary active substance. The heavy metal salt may be copper or zinc naphthenate or heavy metal salts of oleic acid, the hydrocarbon solvent one boiling below 200‹ C., e.g. white spirit, the organic solvent may be diacetone alcohol or the mono-butyl ether of di-ethylene glycol and the capillary active substance an alkali metal salt of an oilsoluble petroleum sulphonic acid, e.g. sodium naphtha-sulphonate. Other substances, e.g. blown fish oil, blown rape seed oil, petrolatum, paraffin wax and biocides such as D.D.T., benzene hexachloride, and arsenic compounds may be added. The fibrous materials may be articles made from cotton, linen, hemp, jute, sisal, manila, wool, hair, artificial silk, casein and keratin fibres.
Patent GB-129694-A (GB)
Title: Improvements in the Mounting of Reflectors.
Inventor: PARSONS CHARLES ALGERNON
IPC: G02B7/182
Filed: 1917-11-27
Abstract: 129,694. Parsons, Sir C. A., Bennett, E., and Rowe, H. Nov. 27, 1917. Reflector-holders. - A reflector for search-lights &c. is mounted upon three (or a multiple of three) pivoted members symmetrically placed round the mirror, each member carrying clips embracing the edge of the mirror at equal intervals round its circumference. The pivot pins of the members may be provided with spring washers, or may be replaced by ball-andsocket joints or other means of flexure. In one form, clips c, Fig. 1, for engaging the metal band f surrounding the edge of .the mirror, are carried by the ends of the sector levers b pivoted at their centres to the ends of three sector levers a, which are pivoted at their centres to the projector ring. In modifications, the clips are carried by the ends of the levers a, or by the ends of levers pivoted td the ends of the levers b. In a second form, Fig. 7, the sector levers a are carried by the outer ends of levers 3 pivoted on supporting-brackets 1 on a ring 2. The back of the mirror is supported by pads 7 on the arms of star-shaped or other supports 6 pivoted to the inner ends of the levers 3. In a third form, the sector levers a are provided at their centres with rounded projections to allow movements in planes passing through the pivots, and are provided at their ends with long clips. A stay is fixed across the reflector ring at the back of the mirror.
Patent GB-282603-A (GB)
Title: Improvements in ironing machines
IPC: D06F65/04
Filed: 1927-07-01
Abstract: 282,603. Sumbling, W. H. July 1, 1927. Ironing-machines with rollers rotating against concave surfaces; ironing-machines, feeding- arrangements for.-The spindle 16 of the roller 19 of a Decoudun is secured to the roller at one end only by a hub 24, the other end of the roller being supported by anti-friction annular members 27 which rotate on a sleeve 20 enclosing the spindle 16. The sleeve is secured to a head 18 carried on an arm 17 pivoted to the main frame 3 about the point 31, a slot 19 being provided in the frame to permit movement of the head 18 to engage and disengage the gears 15, 14. The gear 15 is secured on the spindle 16 and, when the roller is in operative position, meshes with gear 14 carried by a stationary stub-shaft 13 and driven by chain and worm-gearing from an electric motor or by other power means. At the lower end of the arm 17 there is provided a tubular member 30 which extends parallel to and in the same direction as the roller 19 and is secured to a rock-shaft 31 bv a set-screw 32. One end of the rock-shaft is carried bv a block 33 which can swing in a horizontal plane in a slot 34 in the frame about a pivot 35; the other end of the shaft is carried bv a block 36 which can be caused to slide against a spring in a slot in the frame. A handle 45, Fig. 3, is provided for effecting this sliding movement of the rock-shaft bearings, thereby resulting in a limited movement of the roller to and from the shoe 29 in a substantially horizontal plane. The swinging movement of the arm 17 to move the roller into and out of operative contact with the shoe is controlled by an arm 63 pivoted to the frame at 61 and linked to a lever arm 53 projecting from the arm 17, the relative positions of pivots 61, 58 and the adjustment of the spring 65 being such that the arm and roller are locked in operative position. A treadle 49 is linked to lever arms 47 integral with the sleeve 30; depression of the treadle moves the roller slightly out of contact with the shoe, sufficient to permit adjustment of the work but insufficient to disengage gears 15, 14, the spring 65 returning the treadle. The feedboard 67 is pivoted at 68 at one end to the machine frame and is counterweighted at 72 to maintain it in a vertical position to give unobstructed access to the roller. The other end of the board is supported by a pivoted leg 69.
Patent GB-572340-A (GB)
Title: Improvements in or relating to devices for exchangeably mounting tools on lathes or other machine tools
IPC: B23B29/24
Filed: 1943-10-25
Abstract: 572,340. Turning. GFELLER, E. Oct. 25, 1943, No. 17545. [Class 83 (iii)] In a tool-holder for lathes &c. a cylindrical body 2 has radial apertures 1 of prismatic section to receive the shank 15 of a tool or tool-holder 13, a rotatable clamping-bolt 11 of semi-cylindrical form being provided for each aperture to engage a recess 16 in the shank and secure the tool in position. A tool may be secured in any one of the apertures 1 according to the operation to be performed. The bolts 11 are rotated simultaneously by pinions 10 thereon and a central gear 5 so as to assume either the locking positions shown in Fig. 6 or release positions in which their flat sides 12 are flush with the walls of the apertures 1 to permit removal of the tool. The gear 5 is formed on a central member 4 carrying a handle 3 and its rotation is limited by a pin 8 thereon engaging an arcuate slot 9 in the body 2. The tool-holder shown has an arcuate surface 13<1> which is pressed against the exterior of the body 2 by the bolt 11 and it is adjusted for height by a pin 17 whose end engages the upper wall of the aperture 1. A pin 20 is pressed by a spring 22 to cause a wedge surface 19 thereon to lock the pin 17 in adjusted position and the spring is assisted by the action of the bolt 11 on its arcuate surface 21. The apertures 1 which are not in use may be protected by a rotatable cover on the body 2.
Patent GB-508816-A (GB)
Title: Improvements in high frequency carrier signalling transmission systems
IPC: H04B3/44
Filed: 1938-06-14
Abstract: 508,816. Repeaters. STANDARD TELEPHONES & CABLES, Ltd. June 14, 1938, No. 17673. Convention date, June 26, 1937. Addition to 441,825. [Class 40 (iv)] In a multiplex carrier system in which unattended 4-wire repeater stations receive their power supply from a distant attended repeater over the central conductors of the coaxial signal transmission lines, the occurrence of a fault causes the power to be cut off and a signal to be given at the attended repeater. When the door of a housing containing a filter which separates the power currents from the signal currents is opened to obtain access to the line, the latter is automatically grounded and the power is thus cut off at the attended station. As shown, the commercial power source 16 at the attended station Princeton feeds the local amplifiers through a voltage regulator of the saturated core reactance type and a power pack 17 details of which are given in Fig. 2 (not shown), and which has switches to short-circuit and ground the output of the voltage regulator when its housing is removed. The power source 16 feeds unattended repeaters through regulating circuits such as that shown in Fig. 3. When a starting key 79 is operated, relays 81, 73, 46 pull up, the output of a voltage regulator 40 is coupled to a bridge current regulator which is preferably of the type described in U.S.A. Specifications 2,068,316 and 2,069,825 and a short circuit across the output circuit of the bridge is removed. When the current reaches its normal value a relay 88 allows contacts 67 to close and relay 85 then completes a locking circuit for 81. At the same time relays 62, 63 are energized in series with the distant apparatus and open further points in the short circuit across the bridge output so that the relapse of 73 when the key is restored is without effect. Disconnection of or ground on either of the central conductors so modifies the output of the bridge circuit that 88 opens its contacts 67 or its contacts 87, 85 falls after a predetermined interval and unlocks 81 and 46 then disconnects the input of the bridge. 62 and 63 short-circuit its output and discharge the line. The choke 64 prevents an abnormal rise in voltage in the interval before 45 falls. Lamp 99 glows to indicate the condition and an audible alarm may be operated as well. At unattended stations such as D, the power is passed by a transformer 28. The leads 106, 107 at station E do not pass power on to station F which is fed from Philadelphia but provide a means for causing the disconnection of the power supply at Princeton if a fault occurs in the signal transmission line between E and F.