baber/WOPTO huggingface dataset:
Patent GB-587393-A (GB)
Title: Improvements in means for supplying unidirectional current impulses from an alternating current circuit to a welding or other load circuit
IPC: B23K11/24
Filed: 1943-04-12
Abstract: 587,393. Control systems for resistance welding &c. BRITISH THOMSONHOUSTON CO., Ltd. (General Electric Co.). April 12, 1943, No. 5806. [Class 38 (iv)] Thermionic control; transformer arrangements. The shape of the current impulse delivered from a transformer 8 to a welding or other load circuit 1 is determined by electric valve apparatus 3 arranged to excite the primary winding during one half cycle of an A.C. supply and 18 to short circuit the primary winding when the supply potential reverses so that the transformer flux may decay exponentially. Prior to this operation a further valve 11 saturates the transformer core in a direction opposite to the aforesaid excitation so that the flux direction is not reversed during the -impulse, the current supplied to the load circuit is unidirectional and the transformer iron is more fully utilized. The grid of the valve 11 is energized from a transformer 14 so that the valve is normally conducting to pre-magnetize the transformer 8 ; it is rendered non-conducting while the valve 3 is conducting by a transformer 16 which produces a negative bias potential on condenser 15. To ignite the valve 3, shown as an immersion igniter valve, a condenser 22 is discharged through the igniter by a valve 25. The potential of the grid of valve 25 is controlled by a constant negative bias from circuit 31, a phase adjustable. peaky potential from transformer 36, and a negative bias induced by transformer 42 when current flows in the primary of transformer 48. The peaking transformer is ineffective until relay 38 is energized to initiate a welding impulse, due to resistance 37. Contacts, 40 when closed shunt this resistance by a condenser 41 so that the valve 25 fires and valve 3 is rendered conducting, whereupon transformer 42 renders and maintains the valve 25 non-conducting until the relay 38 is de-energized ; the contacts 39 discharge condenser 41. Contacts 4Q<1> close when relay 38 is energized so thata valve 18, shown as an immersion ignition valve, is rendered capable of igniting when the voltage on the primary winding reverses. The ignition of this valve causes exponential decay of the flux in the transformer 8. The relay 38 may be energized by any suitable means to give single or intermittent impulses.
Patent GB-557075-A (GB)
Title: Improvements in or relating to welding and to the manufacture of beaded metal parts
IPC: B23K11/14
Filed: 1942-04-30
Abstract: 557,075. Flanging and welding radio tube parts &c. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 30, 1942, No. 5815. Convention date, Feb. 28, 1941. [Classes 83 (ii) and 83 (iv)] A solid bead is formed on a relatively thin metal sheet by embossing the sheet by drawing metal from the sheet into a hollow bead larger than the solid bead required and then .compressing the hollow bead while preventing flow of metal from the bead into the sheet. The bead may serve as a projection for localizing electric current in welding the header ring 4 to the flange 2 of the metal shell 1 of a radio tube. A sheet metal disc 8 is first drawn into a shallow saucer, Fig. 3, the metal being drawn inwardly from the edge of the disc reducing its diameter. The bottom of the saucer is then drawn in the opposite direction by a smaller flat-faced punch or by an over-size embossing tool to leave an enlarged hollow cored bead 9a, Fig. 4. The disc is placed in a holder with its edge abutting against a flange 11 in the holder to prevent outward flow of metal and the bead is compressed by one or more dies 12 of the coining type with grooves 13a for reducing the height of the bead to form a substantially solid bead. The disc may be centrally blanked out to form a U-shaped ring carrying the glass button head 5 of the radio tube in which the leading-in conductors are mounted. The header is placed with the solid bead in contact with the flange of the shell 1 between a pair of resistance welding electrodes 15, 16 and the parts are welded together.
Patent GB-180419-A (GB)
Title: Improvements in hand operated mechanism for operating electric controllers and other purposes
IPC: H02P1/06
Filed: 1921-02-21
Abstract: 180,419. West & Co., Ltd., A., and West, A. Feb. 21, 1921. Hand driving-mechanism. -A rotary shaft 36 for actuating an electric controller or any other device requiring a substantially constant effort is operated partly by manual power applied to a lever 15 and partly by pneumatic power from a cylinder 2, the force of either agency, separately being insufficient to operate it. When force is initially applied to the handle, one of the springs 30, 31 yields and moves a rod 27 attached to an air-admission valve for the cylinder 2. Manual and pneumatic power are thus brought to bear simultaneously on a quadrant 34 in gear with a pinion on the shaft 36. The pneumatic power may be replaced by any other motive agency.
Patent GB-108656-A (GB)
Title: Improvements in or relating to Internal Combusion Engines.
Inventor: LEADBETTER THOMAS ABNEY NAPIER
IPC: F01L5/06
Filed: 1917-04-27
Abstract: 108,656. Leadbetter, T. A. N., Gilchrist, A. L. K., and Tate, W. H. April 27, 1917. Valves.-In a four-stroke-cycle engine adjacent cylinders 1, 2, with a common combustion space 3 have their inlet and exhaust ports 8, 9 controlled by reciprocating sleeve valves 6, 5 respectively. Pairs of cylinders may he arranged in the form of a V or radially. The valves may rotate.
Patent GB-565518-A (GB)
Title: Improvements relating to crimping or pleating
IPC: D06J1/02
Filed: 1943-04-15
Abstract: 565,518. Crimping or pleating. PILLINER, B. J., and VOKES, Ltd. April 15, 1943, No. 6061. [Class 141] [Also in Group XXII] Material, such as metal gauze or stiff textile material such as buckram for use in filter screens, is deeply pleated by gripping a length necessary to form a pleat of the required depth between front ahd rear grippers and then causing these to move a predetermined distance towards one another. The front gripper engages a partially formed bend made by the rear gripper in the preceding pleating operation and completes the bend. The rear gripper is withdrawn after the pleat has been formed, the front gripper opened to allow the pleat to pass and the material fed forward until the partially formed bend comes into front gripping position. The grippers are then closed and the cycle of operations repeated. The Figure shows in elevation a form of apparatus wherein the front gripper 2 comprises a blade member 3 adapted to be moved vertically between guides 21 to co-operate with a fixed upper part to complete a bend in the material to be pleated. The rear gripper comprises a slide member 4 and a one-way clamping dog 5 or a series of same pivoted thereto, so shaped as to form a partial bending of the material. The feed slide, which carries a one-way gravity or spring-held holding dog 7 for moving the material forwards after each pleating operation, and also the front and rear grippers, are actuated in timed sequence through systems of levers actuated by cams 44, 22, 31 respectively on a cam-shaft 14, adjustment of movement being provided by adjustable lever pivots in the systems. A screw 62 adjusts the feed stroke by limiting back movement of the feed slide. A blade member may be supported on slide member 4 to ensure downward folding of the material to be pleated.
Patent GB-397849-A (GB)
Title: Improvements in or relating to decarbonising devices for internal combustion engines
IPC: F02M25/00
Filed: 1932-02-29
Abstract: 397,849. Cylinders. BULL, E. BAGNALL-, Treetops, Kewferry Road, Northwood, Middlesex. Feb. 29, 1932, No. 6076. [Class 7 (ii).] In a decarbonizing device air is drawn into the induction system, first through a chamber 10 containing water or other liquid-e.g. carbon tetrachloride, or a solution of monochlornaphthaline in water -and then through a second chamber 11 containing a decarbonizing substance. The air enters by a tube 22 and chamber 21 which is closed by a block 25 of porous porcelain and contains crystals 29 of a decarbonizing substance, -e.g. silica gel-, through which the air is distributed by a perforated tube 26. The chamber 10 comprises a glass receptacle 13, clamped to a lid 18 by a trough-like support 14 which is detachably and adjustably mounted on a fixture 38. The moistened air passes to the chamber 11 through a hollow support 30 and a valve controlled by a knob 33 ; the chamber 11 has a detachable cap 36 and contains a decarbonizing cartridge 34 of the kind described in Specification 368,513. An air filter may be fitted to the inlet tube 22 and the cartridge 34 may be supported on an inner tubular member which causes the air current to be reversed in passing to a nipple 12 which is connected by a flexible tube to the induction system of the engine. The Provisional Specification describes making the device of sheet metal or the substance known by the Trade Mark " Bakelite."
Patent GB-525627-A (GB)
Title: Improvements in and relating to brushes for starch sifting machines
IPC: B07B1/52
Filed: 1939-02-24
Abstract: 525,627. Cleaning confectionery after moulding. CO-OPERATIVE WHOLESALE SOCIETY, Ltd., and SAUNDERS, C. W. Feb. 24, 1939, No. 6119. [Class 87 (ii)] In machines for separating starch from confections which have been moulded in starch moulds comprising a jigging conveyer built up of end-to-end segments e carrying brushes, the latter consist of a number of side-by-side units a, each unit having its own wire sieve b secured to it. The backs of the brush units are provided with slots a<SP>1</SP>, Fig. 2, and the units are made bv inserting the tufts of bristles c into the backs through the sieve meshes after the latter is fixed in position. The sieves are spaced at a short distance from the backs. Each unit preferably comprises two groups of three rows of tufts with a group of two rows on each outer edge, the slots being arranged between the groups.
Patent GB-657805-A (GB)
Title: Improvements in sensitive photographic materials
IPC: G03C1/09
Filed: 1949-03-07
Abstract: 657,805. Photographic emulsions. KODAK, Ltd. March 7, 1949, No. 6142. Convention date, March 5, 1948. [Class 98 (ii)] A photographic silver halide emulsion contains as a stabilizing agent an alkali or alkaline earth metal palladothiocyanate, palladonitrite, or palladibromonitrite, or ammonium palladonitrite. The palladium compound may be present in a concentration of from 260 to 3900 mgs. per kilogram of silver nitrate equivalent to the silver halide in the emulsion, and is preferably added after the final digestion, although it may be added before such digestion. In a modification the palladium compound is incorporated in a colloid binder which is coated above or below the emulsion layer. The emulsion may be dye-sensitized, and may have a gelatin, collodion, albumen, cellulose derivative, or synthetic resin binder. Compounds specified are potassium and calcium palladothiocyanate, potassium, barium, and ammonium palladonitrite, and potassium palladibromonitrite. Ammonium and potassium palladocyanides and ammonium palladothiocyanate are unsatisfactory. Tests are described showing the speed, gamma, and fog values for a silver halide emulsion with or without certain of the compounds and before and after storage for various periods at 120 ‹ F. dry heat and under simulated tropical conditions. Specifications 602,158 and 650,655 are referred to.
Patent GB-1236197-A (GB)
Title: Improvement in or relating to sulfation of starch fractions
Inventor: KRUGER LEO HENRY
IPC: C08B33/02
Filed: 1969-02-05
Abstract: 1,236,197. Amylopectin sulphates. NATIONAL STARCH & CHEMICAL CORP. 5 Feb., 1969 [4 March, 1968], No. 6193/69. Heading C3U. A process for the preparation of an amylopectin sulphate comprises (A) dispersing the amylopectin in water; (B) adjusting the pH of the dispersion to within the range from 10À5- 12À0 using aqueous sodium hydroxide solution and slowly adding a trimethylamine-sulphur trioxide reaction product (TST) to the dispersion; the concentration of TST being at least 150% based on the weight of amylopectin; (C) reacting the amylopectin with the TST at a temperature of 115-132 F. for a time sufficient to complete the sulphation, while continually maintaining the pH of the system at a level of from 10À5-12À0 by the addition, when needed, of portions of aqueous sodium hydroxide; (D) subjecting the resulting aqueous dispersion of amylopectin sulphate to a two-phase stripping operation for the removal of residual trimethylamine, the first phase comprising reducing the pressure of the system to no higher than 5 inches Hg and maintaining the temperature at 115-132 F. to distil the bulk of the trimethylamine and, while maintaining the pressure of the system at no higher than 5 inches Hg, and with the temperature in the range from 115-132 F., conducting the second phase of the stripping operation by adding water to the system and subsequently distilling it therefrom so as to remove substantially all of the remaining triethylamine; the pH of the system throughout both phases of the stripping operation being maintained in the range 10À5-12À0 by the addition, when needed, of aqueous sodium hydroxide; (E) dialysing the aqueous residue from the stripping operation so as to reduce its residual salt content to below 5%, based on the weight of the amylopectin sulphate; and (F) completing the process by spray drying the dialysed dispersion so as to obtain the amylopectin sulphate in the form of a dry powder. The aqueous residue may be concentrated before the spray drying process.
Patent GB-1092423-A (GB)
Title: Dough forming apparatus and process
IPC: A21C11/00
Filed: 1965-02-12
Abstract: 1,092,423. Moulding dough. GENERAL MILLS Inc. Feb. 12, 1965 [Feb. 14, 1964 (2)], No. 6243/65. Heading B5A. Hollow cone-shaped bodies of edible dough are formed by cutting a double strip of tubular preform, about a core member if necessary, with blades at least some of which are blunt so that the layers of dough are pressed and sealed together during the cutting. In one embodiment, a double strip 36, 34 of dough is fed over rollers 102 to the bight between contra-rotating cutting-wheels 16, 18 which carry co-operating zig-zag blunt blades 22. Between the " V's " of these blades are located recesses 28 corresponding pairs of which co-operate as the wheels rotate to form cone or pyramid shaped cavities 28-28 which open alternately on one face and then the other of the wheels. In operation, moving fingers 52, carried by a pair of vertically disposed moving chains 46 located on opposite sides of the wheels, are inserted into the cavities so that as the wheels rotate the strips of dough are cut and sealed by the blades 22 and are formed into' hollow cones in recesses 28-28 about fingers 52 (see Fig. 8, not shown), the cones subsequently being removed from the fingers by a rotating brush 56. In a second embodiment (not shown) a tubular preform, made by bending a sheet of dough into a U- shape by suitable rolls and pressing it against a flat sheet by a third roll, is fed through guide neons to a cutting-wheel and a co-operating backing roller. The tube is cut diagonally by blunt blade portions 120b (see Fig. 10) and transversely at right-angles to its longitudinal axis by sharp blade portions 120a.
Patent GB-260149-A (GB)
Title: Improvements in equalising springs for automobiles, and the like
IPC: B60G11/02
Filed: 1926-03-08
Abstract: 260,149. Wilson, A. A. March 8, 1926. Springs, arrangement of; guiding vertical play. -In a front suspension for motor and other vehicles of the type comprising an equalizing transverse spring 15 centrally pivoted at the front of the vehicle and connected by double shackles 13, 14 to the front ends of the side springs 9, adjustable radius rods 22 are attached at one. end to the side springs and at the other end to the front of the vehicle. The front ends of the rods 22 are formed with eyes and are carried by a rod 20 which passes through the usual bearings 12 at the front ends of the dumb irons 8 and through :a tubular member 19 arranged between the dumbirons, the parts being held in position by nuts 21. The rear ends of the rods 22 are each threaded to engage a nut 15 mounted on trunnions 26 in a bracket 27 preferably integral with the clamping plate 28 of the spring 9. The clip-member 16 of the transverse spring 15 is pivoted at 18a to a clip 18 on the tubular member 19.
Patent GB-653311-A (GB)
Title: Improvements in and relating to nickel chromium steels
Inventor: OLIVER DONALD ARTHUR
IPC: C22C38/52
Filed: 1945-03-14
Abstract: Nickel-chromium steels have the following composition:-C 0.08-1.0 per cent; Si 0.1-2.0 per cent; Mn 0.1-5.0 per cent; Ni 5.0-30.0 per cent; Cr 5.0-30.0 per cent; W 0.05-10.0 per cent; Mo 0-15.0 per cent; Ti above 1.5-15.0 per cent; Co above 6.0-30.0 per cent; N 0-0.3 per cent; Fe above 30 per cent and constituting, with unavoidable impurities, the balance.  The alloys may contain Al 0.03-30.0 per cent and/or Cu 0.05-15.0 per cent.  Ti is preferably introduced into the alloy in a vacuum furnace or in a condition in which a substantially neutral, i.e. non-oxidizing atmosphere, is employed. The alloy may be used for machine parts or other articles to be subjected to high temperature particularly valves of high duty internal combustion engines and rotors or vanes or blades for gas turbines and the like. Specification 647,701 is referred to.
Patent GB-644006-A (GB)
Title: Improvements in or relating to locks
IPC: E05B67/00
Filed: 1947-03-07
Abstract: 644,006. Locks. INDECO INVENTIONS DEVELOPMENT CO., Ltd. March 7, 1947, No. 6443. Convention date, March 26, 1946. [Class 44] A lock comprises two locking members which engage, for instance, the two limbs of a shackle, two toothed pinions which are turned simultaneously through equal angles by the insertion of a rack-like key which engages both pinions tangentially, and means connecting the pinions to the locking members so that rotary movement of the former causes sliding movement of the latter. Preferably the axles of the pinions are so interlocked that neither pinion can be moved alone. In the padlock shown in Figs. 2 and 3, a sliding shackle 2 has indentations 4 which are engaged in the locked position by corresponding teeth on bars 5, 6 attached to plates 8, 7 which can slide laterally of the shackle. Each plate has two cut-out parts to accommodate cams 13, 15 and 14, 16, mounted in pairs on shafts 17, 19 respectively. Also mounted on the shafts. but not in the same plane, are pinions 31, 32, preferably formed with teeth of irregular pitch. The key, Fig. 4, has two rows of perforations, 35, 36, which correspond to the teeth of the respective pinions. Since one cam on each shaft engages each plate, both pinions must be turned at once to operate the lock. The pinion shafts are spring biassed to locking position. In the form shown in Figs. 9 and 10, a U-shaped shackle 55 has notches 57, 57<1> in the legs, in which engage, in the locked position, the edges of discs 63, 63<1> respectively which are keyed to two parallel shafts which also carry pinions 58, 60 adapted to be turned simultaneously by a key 62 to bring cut-out parts of the periphery of each disc into line with the shackle legs. In order to prevent one shaft being turned by itself, each shaft has right- and left-hand threads at opposite ends which work in corresponding nuts 64, 65, secured in displaceable plates 64<1>, ,65<1>, mounted in the casing.
Patent GB-549520-A (GB)
Title: Improvements in and relating to building or constructional units
IPC: E04C2/04
Filed: 1941-05-21
Abstract: 549,520. Building blocks &c. MANN, G. S., FRANKLIN, G., and SQUIRRELL, J. C. May 21, 1941, No. 6488. [Class 87 (i)] A building slab, block, board, batten &c. comprises a body portion 9 of breeze or other agglomerated materials with or without cement, and with or without sand as the binding and filling materials, faced on one or both sides 10 with a composition consisting of pulped or shredded and liquid-saturated paper with a binder. The facing composition may include gypsum, a hydraulic or other cement, asbestos, lime. sand, or stone powder, and material of an absorbent nature such as cane or fibre in finely sub-divided form. The facing layer may comprise the material described in Specification 529,753, [Group V]. The materials to form the body portion and the facing layer or layers are built-up in a mould and compressed, with or without heat. The blocks &c. may be provided with grooves and tongues 4, 5 to interlock with adjacent blocks.
Patent GB-979837-A (GB)
Title: Improvements in and relating to x-ray diffraction cameras
IPC: G01N23/205
Filed: 1961-02-22
Abstract: 979,837. X-ray diffraction cameras. E. NETZSCH, [trading as GEBR. NETZSCH [Firm of]]. Feb. 22, 1961, No. 6523/61. Heading H5R. In an X-ray diffraction camera the X-ray beam passes through a collimating slit of adjustable width before striking the specimen, the beam then passing through a further collimating slit before falling on a film supported in a circular arc. In the form shown, the film 12 rests in a holder 11, and has an outside cover 13. The primary X-ray beam enters between movable diaphragm jaws 1, 1a, which have both coarse and fine adjustment. These exercise a preliminary collimating effect on the beam, which then passes through a further limiting diaphragm 3 before imping- ing on the specimen 7. This is carried on a small glass tube 8, and pressed by a spring-loaded clamping jaw 9 against an opposing jaw 4. Jaw 4 can turn about a pivot 5, and has a scale and pointer 6 for accurate adjustment of diaphragm 3. The construction of jaw 9 allows different specimens to be readily inserted without any further adjustment of the apparatus, provided that they are all mounted on glass tubes 8 of the same diameter. A slit 10 is mounted (also pivotally adjustable) beyond the specimen, and so collimates the beam that only the direct beam and the diffracted rays immediately surrounding it impinge on the film 12.
Patent GB-512430-A (GB)
Title: Improvements in or relating to annealing apparatus
IPC: C21D9/00
Filed: 1938-03-02
Abstract: 512,430. Annealing boxes. EICKWORTH, R. March 2, 1938, No. 6552. Convention date, March 2, 1937. [Class 72] In apparatus for annealing bars, strips, bands or sheets, the bars 18 &c. are placed in one or more pockets of a frame 1 arranged between circular disks or wheels 2, of such a diameter that when the pockets are filled with the bars &c. which are held in position by bolts, wedges &c. the walls of the pockets lie within the diameter of the wheels 2. When one pocket is filled with bars &c. the frame 1 is rolled over to bring another pocket upwards for filling. The frame 1 is provided with a hollow hub 3 provided with supporting hooks 4 for suspending the frame 1 from a crane chain. The filled frame is now lowered into an annealing pot 8 provided with horizontal corrugations 10 and a detachable cover 14 which slides on the hub 3 is detachably bolted to the pot 8 and sealed with a gland. The hub 3 is closed by a fitting comprising a cock 6 for the introduction of protective gas into the pot 8 and a cock 7 communicating with a tube 9 for the removal of the air displaced by the protective gas. A central pocket between the pockets of the frame 1 may be provided with electrical heating elements for equalising the temperature difference between the bottom and top of the furnace chamber 15 heated by tangentially-arranged burners. A vertically-adjustable support 13 for the pot 8 may be provided in the chamber 15. Reference has been directed by the Comptroller to Specifications 7399/13 and 306,541, [both in Class 72].