baber/WOPTO huggingface dataset:
Patent GB-849513-A (GB)
Title: Improvements in or relating to metal castings
IPC: C21D8/10
Filed: 1958-08-20
Abstract: 849,513. Making seamless tubes; altering molecular structure. UNITED STATES PIPE & FOUNDRY CO. Aug. 20, 1958 [Aug. 26, 1957], No. 26779/58. Classes 83 (2) and 83 (4). A method for improving the physical properties of a cylindrical casting formed of a ductile metal, e.g. stainless steel, nickel alloys, copper and copper alloys of a kind which does not undergo recrystallization with heat treatment alone comprises subjecting the entire inner wall of the casting to an outwardly-directed radial force sufficient to expand the casting to such a degree as to render it capable of complete recrystallization upon subsequent heat treatment, and heat-treating the expanded casting to effect said complete recrystallization, the casting being free from external restraint whilst being expanded at a temperature below the recrystallization temperature. In an embodiment, the casting is placed over a core-piece 2 provided with a waisted portion 8 and sealing means 5 at each end. Heavy hold-down rings 9 surround the ends of the casting and fluid-pressure is supplied to the annular space formed by the casting and the waisted portion of the core-piece to expand the casting to the desired diameter, namely an increase of at least 16%. For applications requiring high precision, a cylindrical die 10 (Fig. 3) is placed around the casting. The casting may be expanded to an intermediate degree, annealed and then subjected to additional expansion and annealing steps until the desired grain refinement is achieved. The expansion does not elongate or shorten the casting, the coarse crystals adjust themselves to accommodate the increased diameter by block movements in an outward direction which results in a coarsely-crinkled outer and inner surface being given to the treated casing. In an example, a cast stainless steel cylinder is. expanded so that the outside diameter is increased 17.6%. The expanded casting is annealed at 1950‹ F. and water-quenched. Specification 251,480 is referred to.
Patent GB-245243-A (GB)
Title: Improvement in apparatus for separating dust from air and filtering solid particles from fluids or the like
IPC: B01D45/08
Filed: 1924-11-10
Abstract: 245,243. Taylor, J. B. Nov. 10, 1924. Separating by gravity. - Solid particles are separated from a gas or liquid in which they are suspended by causing the fluid to flow substantially at right angles to collecting surfaces forming walls across a casing, the surfaces being perforated and having pockets behind them in which the dust &c. settles. The dust separator comprises a chamber divided by a perforated floor and disposed above a hopper 11 from which it is separated by doors 12, 13 forming a floor and opened momentarily to allow the dust in the chamber to fall into the hopper. Each separating unit is formed of a transversely placed row of boxes separated by narrow vertical wedge-shaped passages 16. Each box comprises front and back dead air spaces 17, 18 separated by a partition 19 and enclosed by perforated walls 20, 21 concave outwards; each air passage 16 is directly opposite the middle of a wall 20. Dusty air enters the separator by openings 25; part of the dust falls through the perforated floor; another part adheres to the surfaces 20, 19. Part of the air escapes directly through the passages 16, while the remainder is reflected back to the partition 24, where it deposits some dust, and afterwards joins the current entering by the passages 25. In the subsequent separating compartment the process is repeated.
Patent GB-738809-A (GB)
Title: Improvements in and relating to rotary kilns
Inventor: KAESS FRANZ
IPC: C01C3/00
Filed: 1953-09-30
Abstract: <PICT:0738809/III/1> A rotary kiln for the production of calcium cyanamide from calcium carbide and nitrogen, comprises a refractory lined metal drum 1 rotated by an annular gear 9 in races 7 and 8, and formed with a cylindrical enlargement 4 at the feed end having its axis inclined to the axis of the drum 1.  Charge material is introduced through a screwfeed 5 surrounded by a tube 6 through which nitrogen is admitted.  To prevent caking, powdered calcium cyanamide, carbon or other inert material is first charged into the enlargement 4 which is initially heated by a gas burner.  Approximately 80 per cent of the calcium carbide is converted in the enlargement, the remainder reacting in the chamber 3.  In a modified kiln, Fig. 2 (not shown), the enlargement is formed as a truncated cone with the larger diameter facing the chamber 3.
Patent GB-738626-A (GB)
Title: Improvements in or relating to esters
IPC: C07C69/63
Filed: 1953-09-30
Abstract: The invention comprises esters of trichloracetic acid having the formula C.Cl3.COO-(R-O)nY in which (R-O)nY is a mono- or poly-glycol ester group, R having 2-4 carbon atoms, n being 1-7, and Y being hydrogen or a trichloracetyl group, herbicidal compositions containing one or more such esters dispersed in a liquid carrier, and a method of making the esters by esterifying trichloroacetic acid with a glycol of molecular weight of 62-400.  For glycols of higher mol. weight than 150, it is best to esterify with the trichloracetyl halide.  In examples, trichlor-acetic acid or -acetyl chloride is esterified with ethylene glycol, polyethylene glycol of about 300 mol. weight, or polyethylene glycol of mol. weight about 400 to give mono- and di-esters.  The products are made up into herbicidal compositions, and a table is given of tests on various such compositions.  The results of numerous other tests on various plants are also given.ALSO:The invention comprises herbicidal compositions containing mono and polyalkylene glycol esters of trichloracetic acid (see Group IV (b)), of the formula CCl3CO.O(R-O)n-Y where R is a 2-4 aliphatic carbon chain, n is 1-7 and Y is hydrogen or a trichloracetyl radical.  The esters are applied to plants as dispersions or solutions in hydrocarbons such as naphtha with, if necessary, emulsifying agents, preferably non-ionic, such as soaps, rosin soaps, algin soaps, long chain alcohols, sulphated fatty amides, esters of sulphated fatty acids, and alkyl and aryl sulphonates, and such solutions or dispersions may contain adhesives such as polymeric organic polysulphides, e.g. polymeric ethylene polysulphide.  The compositions may also be made up in the form of pastes or dusts with the aid of talc, flour, fuller's earth, clay and other non-alkaline powders soluble or insoluble in water.
Patent GB-417155-A (GB)
Title: Improvements in method and apparatus for investing dental casting patterns
IPC: A61C13/20
Filed: 1933-09-29
Abstract: 417,155. Moulding machines and processes. PHILLIPS, D. W., 2376, East 71st Street, Chicago, U.S.A. Sept. 29, 1933, No. 26856. [Class 83 (i).] A dental casting pattern is vibrated while it is being invested. A dental pattern 35, Fig. 9, is carried by a sprue 36 which is mounted on a crucible-forming holder 38 preferably of plaster of Paris, absorbent paper or other material which will absorb water from the investment material 33 in the container 22. The container is secured by spring clips 51 to a plate 49 at the end of an arm 42, an electrically controlled vibrator 53 being mounted above the container. The arm 42 with the pattern is lowered and raised twice before it is finally lowered, the vibrator 53 operating throughout. A second vibrator 28, Fig. 9, actuates an armature 26 forming part of a member 25 engaging the elastic closure 34 of the container. Downward pressure is exerted later in the operation on the container to cause a plug 41 to compress the investment and expel water therefrom. The movements of the arm 42 are derived from a cam 57, Fig. 4, through a follower 64, lever 62, and rod 55. The cam is rotated through substantially one revolution by a clockwork motor timed by an oscillating lever, with a weight wheel and spring, the driving spring being wound up to the correct degree through a rack and pinion actuated by a manual control 74, Fig. 1. The circuit of the vibrator 53, and in some cases that of the vibrator 28, are controlled by the movement of the winding- up rack. Manual control switches 124, 125 are also provided. Pressure is exerted on the container 22 by a member 95 which is pulled downwardly by a spring 98 and which may be swung over the rod 42.
Patent GB-746512-A (GB)
Title: Improvements in or relating to a double front feed device in typewriting and like business machines
IPC: B41J11/54
Filed: 1953-09-30
Abstract: 746,512. Typewriters. TORPEDO-WERKE AKT.-GES. FAHRRADER UND SCHREIB MASCHINEN. Sept. 30, 1953 [Sept. 30, 1952], No. 26856/53. Class 100 (4). In a double front feed device for a typewriting or like machine wherein feeding rollers for each sheet are driven individually, driving wheels 1, 2 for the feeding rollers are freely rotatable on a control shaft 4 rotated by a hand lever 3, but may be alternatively - coupled to the shaft 4 by slide keys 5. The slide keys 5 are spring mounted in bushes 17 and 19 and engage a control rod 6 axially movable in a bore in the shaft 4. The rod 6 is axially moved by pivotal movement of the handlever and has two slide actuating recesses 15 arranged so that only one of the slides 5 is moved outwardly at a time. The outward slide 5 engages a coupling lever 32 of a particular driving wheel 1 or 2 and so effects rotation when the hand lever is turned. A spring 28 returns the hand lever to normal and the driving wheels 1 and 2 are returned upon the release of a spring motor which is tensioned during advance of a sheet. The amount of rotation of the driving wheels is determined by an adjustable eccentric stop engaged by an abutment on the levers 32 in the inoperative position and by counterabutments adjustably secured to each driving wheel.
Patent GB-422869-A (GB)
Title: Improvements in electric discharge devices
IPC: H03L1/02
Filed: 1933-09-30
Abstract: 422,869. Thermionic valves. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN, 30, Croeselaan, Utrecht, Holland. Sept. 30, 1933, No. 26982. Convention date, Nov. 12, 1932. [Class 39 (i)] In a short wave oscillation generator in which the system producing the natural wave is contained in the valve envelope, the system is so arranged mechanically as to prevent variations in the natural frequency with temperature. The system may be made of metals having different coefficients of expansion, or of a metal having a small coefficient of expansion, for example the material known by the Registered Trade Mark "Invar."
Patent GB-705467-A (GB)
Title: An improved manual boat propelling mechanism
Inventor: AYLMER ERNEST WILLIAM
IPC: B63H16/20
Filed: 1952-10-28
Abstract: 705,467. Manually propelled boats. VIKING MARINE CO., Ltd. Oct. 28, 1952. No. 27094/52. Class 114 The fore and aft hand cranks 1 are mounted on the thwarts of a boat by bearings 11, 21, being connected to the bearing shafts 13, 36 by flexible discs 5. The tension on the driving belts 28 can be adjusted by a hand controlled lever which moves the pulley 23 in a rocking frame. Specification 696,186 is referred to.
Patent GB-616621-A (GB)
Title: Improvements in or relating to electrical screening harnesses for internal combustion engine ignition systems
IPC: H04B15/02
Filed: 1946-09-11
Abstract: 616,621. Electric cables. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and STEVENS, J. W. SANGER-. Sept. 11, 1946, No. 27339. [Class 36] A cable harness for an ignition system includes a flexible tubular portion 1 of rubber or the like covered with one or more layers 2 of metal braiding, this flexible portion being electrically joined in a fluid-tight manner to another part 4 of the harness by drawing the end of the rubber tube 1 over the end of the part 4 and extending the braiding 2 over a rigid sleeve 5 carried on the part 4. A tubular sleeve 6 encloses the joint thus formed and is shaped as at 6a, 6b to press down on to the metal covering 2.
Patent GB-885908-A (GB)
Title: Improvements in intakes for compressible fluids
Inventor: SARGENT RAYMOND FREDERICK
IPC: F02K7/10
Filed: 1957-08-30
Abstract: 885,908. Generating combustion products under pressure. BRISTOL SIDDELEY ENGINES Ltd. Sept. 1, 1958 [Aug. 30, 1957; Dec. 3, 1957], Nos. 27470/57 and 37701/57. Class 51(1). [Also in Group XXVI] Combustion equipment for a ram jet comprises a flame tube 26 forming a pilot combustion zone 27 at its upstream end into which fuel is discharged through a sprayer 28 mixed with air entering through swirl vanes 29 Further fuel is sprayed into the main duct through sprayers 30, the fuel, mixed with air, passing through holes in the flame tube and being maintained in combustion by the pilot combustion zone. An additional intake may be provided in the ram jet to convey air to the pilot combustion zone so that conditions therein are independent of those in the main duct. Specification 762,179 is referred to.
Patent GB-1079490-A (GB)
Title: Aminotriazine resins
IPC: C08G12/34
Filed: 1966-06-20
Abstract: Modified aminotriazine resins are prepared by first condensing, in a substantially anhydrous medium, paraformaldehyde with an alkanolamine and then reacting the resultant precondensate with an aminotriazine (especially melamine) optionally in the presence of additional formaldehyde.  The first stage may be carried out at 70-100 DEG  C. and the molar ratio of HCHO (in paraformaldehyde) to alkanolamine may be from 1 to 3.5.  Examples of alkanolamines are triethanolamine and tributanolamine. Benzoguanamine and acetoguanamine are also suitable aminotriazines.  The modified resins may be used in conjunction with conventional aminotriazines in aqueous solution in the preparation of laminates.
Patent GB-344900-A (GB)
Title: Improvements in and relating to photographic printing
IPC: G01J1/42
Filed: 1929-09-10
Abstract: 344,900. Photographic printing. CAMBRIDGE INSTRUMENT CO., Ltd. and MOSS, E. B., Chesterton Road, Cambridge. Sept. 10, 1929, No. 27540. [Class 98 (i).] The automatic control of exposure in photographic printing is effected by regulating the quantity of light incident upon a print from the negative by causing some or all of it to fall upon a photo-electric cell, and using the activation of the cell to control the charging of a condenser of known capacity, the voltage of which is transferred to the grid of a three-electrode valve, the current being utilized to operate delay apparatus to close a shutter or cut off the light. The apparatus may be used in connection with the automatic production of uniformly exposed photographic prints from negatives of varying density. The anode 1 of a photo-electric cell 2 is connected to the positive end of a high tension supply 3 together with the anode 4 of a three-electrode valve 5. The negative terminal 6 of the cell 2 is connected to the grid 7 of the valve and to one side of the condenser 8 of known capacity. The other terminal of the condenser is in the negative lead of the low tension supply, from which the grid 7 of the valve is insulated except when contact is made by a key 9. The anode current is used to operate the relay 11 and is adjusted to zero with key 9 depressed. If the key 9 be lifted when light is incident on the cell 2 the condenser 8 will gradually be positively charged and the anode current will increase. A portion of the light from a light source 13 after passing through a negative 15 on its way to the print 18 is deflected by a semi-transparent mirror 17 on to the photo-electric cell 2, Fig. 3.
Patent GB-1304338-A (GB)
IPC: G03B9/58
Filed: 1971-06-11
Abstract: 1304338 Photographic shutters and diaphragms FRANKE & HEIDECKE GmbH [trading as ROLLEIWERKE FRANKE & HEIDECKE] 11 June 1971 [26 June 1970 22 April 1971] 27556/71 Heading G2A Shutter or diaphragm blades are connected to an electromagnet blade drive mechanism which includes a magnetic assembly comprising a hollow cylindrical member 1 closed at one end and a cylindrical core member 2 located within the cylindrical member to define a gap 5 therebetween and a cylindrical coil 4 which is movable coaxially with the core 2 in the gap 5, the cylindrical member having at least a part of its internal diameter substantially identical to the external diameter of the coil and the over-all axial length of the coil corresponding to the depth of the cylindrical member and to the length of movement of the coil. The core 2 consists of a permanent magnet. Preferably the drive has two coils 4, 7 and two pot-shaped magnets 1, 6, the first system drives in direction A whilst the second drives in direction B. The coils are interconnected by a ring 8 which is coupled to a blade ring 11 via a pin and slot coupling 9, 10. The blades may be directly coupled to the pin 10, Fig. 3, (not shown). The blades may move in a rectilinear direction, Fig. 4 (not shown). In a further embodiment, Fig. 5, (not shown), the axis of the coil and the pot-shaped magnet follows a circular path about the axis of a blade which is rigidly coupledto the coil. At the end of the opening stroke, the coil structure may engage resilient members which store the kinetic energy of the mechanism and assist in obtaining short exposure times. The drive mechanism may be mechanically prestressed to the open position and by regulating the current through the coil a pre-selected aperture may be obtained via an exposure regulating device or a manual device.
Patent GB-1580652-A (GB)
Title: Process for the manufacture of methyl tertiary butyl ehter
IPC: C07B61/00
Filed: 1977-07-01
Abstract: Process for the preparation of pure methyl tert.-butyl ether. Isobutene or isobutene-containing hydrocarbon mixtures are reacted with methanol in a molar ratio of 1:1 to 1:2 in the liquid phase at temperatures of between 30 DEG  and 100 DEG  C. on sulfonated, strongly acidic, macroporous organic ion exchange resins. After separation of the unreacted hydrocarbons, the reaction mixture is distilled under pressure; the methanol-containing distillate formed during the distillation is recycled into the zone of the reaction between methanol and isobutene; and pure methyl tert.-butyl ether is withdrawn from the sump of the distillation column.
Patent GB-602901-A (GB)
Title: Improvements in or relating to sectionally constructed buildings
IPC: A01G9/14
Filed: 1945-10-22
Abstract: 602,901. Greenhouses; sectional build ings. TILLS, J. W. Oct. 22, 1945, No. 27661. [Class 20(i)] A sectional greenhouse or other building has stiffening consisting of metal flange-like members inserted between separate longitudinal sections of the building. The sections have end, roof and wall members 10 and 11 which support (in a greenhouse) longitudinal and transverse glazing bars of T-section. The stiffening members 23, which may each be made of flat strips welded together to the shape of the transverse section of the building, are bolted between the flanges of adjacent members 10, 11 of different sections, holes being drilled near the outer edge of the member 23 for this purpose. Holes 25 are drilled near the inner edge for the reception of supporting wires &c. for plants. The roof of the building may be hinged to the sides.
Patent GB-889620-A (GB)
Title: Improvements in electrical switching devices
IPC: H04Q3/00
Filed: 1958-08-28
Abstract: 889,620. Automatic-exchange systems. COMPAGNIE INDUSTRIELLE DES TELEPHONES. Aug. 28, 1958 [Aug. 28, 1957 ; Sept. 26, 1957], No. 27668/58. Classes 40 (4) and 40 (9). Line identifier, Fig. 1, when a subscriber closes his loop winding e3 saturates the core of a magnetostatic relay of the type described in Specification 871,623. When connection has been made to the register winding e4 desaturates the core so that winding e1 produces a pulse. The subscriber's magnetostatic relays are arranged in a matrix (Fig. 2, not shown) of the type described in Specification 23580/58, after amplification by transistor TA, energizes magnetostatic relays D, U corresponding to the tens and units digits of the calling number. The register then energizes winding e2 to restore the relay A. Testing of called line, Fig. 4. As before, initiation of a call energizes A through winding e3. Connection to the register releases A by applying current through e4, this current being maintained until the subscriber hangs up. If the called subscriber's line is found to be free the register energizes the called line relay A through winding e2. If the line is busy the called line relay A remains unenergized. Energization of called line relay A operates test relay Ta or Tb according to the register in use. Privileged subscribers. Privileged subscribers have their relays A connected also to PP and PD relays through reversed rectifiers Rd1, Rd2. If therefore the called line is found to be busy, release of relay A energizes PP and PD to give an indication of priority and initiate connection to the telephone network.
Patent GB-956557-A (GB)
Title: Improvements in or relating to float actuated liquid flow control valves
Inventor: THURSTON BRYAN OLIVER
IPC: F16K31/34
Filed: 1959-08-13
Abstract: 956,557. Valves. SANGAMO WESTON Ltd. Aug. 15, 1960 [Aug. 13, 1959], No. 27735/59. Heading F2V. [Also in Division F4] A valve controlling the flow of fluid, such as a fuel level control valve in an oil burner, comprises an inlet 13, outlets 16 and two valve closure members 14, 18 actuated by a common valve control means to close in sequence. The valve member 18 is part of a plunger 17 which is bored to receive a piston member 24 forming part of the valve member 14. A spring 27 urges the piston towards a stop 29 such that when the plunger is moved downwards the valve member 14 first engages its seat and further downward movement of the plunger causes the valve member 18 to engage its seat. The plunger 17 is actuated through a lever 21 by a float and a hammer 30 may also be provided which is actuated in known manner through a release mechanism if the liquid level rises above a predetermined excess value due to failure of the first valve member to close, to apply additional pressure to the plunger 17. A needle valve 14 may be replaced by a loose ball or lift valve which contacts a piston member similar to 24.
Patent GB-351340-A (GB)
Title: Improvements in or relating to sparking plugs for internal combustion engines
IPC: H01T13/46
Filed: 1930-09-17
Abstract: 351,340. Sparking plug housings. KEGRESSE, A., 156, Rue Armand Silvestre, Courbevoie, France. Sept. 17, 1930, No. 27757. Convention date, Sept. 19, 1929. [Classes 7 (ii) and 7 (iv).] The insulation 1 is housed directly in the wall 2, Fig. 1, of the water-jacket 5, or in a steel member 2, Fig. 2, in direct contact with the cooling water. The spark passes between the insulated electrode and an annular projection 8 of the wall 2. In the second construction the member 2 is formed with a seating 9. Spacing ribs 12 are provided in the water-jacket.
Patent GB-980648-A (GB)
Title: Improvements in or relating to machine feeding arrangements
Inventor: JACKSON THOMAS MEIRION
IPC: B23H7/28
Filed: 1962-07-19
Abstract: 980,648. Screw-and-nut gearing. STANDARD TELEPHONES & CABLES Ltd. July 19, 1962, No. 27781/62. Heading F2Q. [Division B3] Rotation of a nut 31 in one direction results in downward feed of a screw 30, which is prevented from rotating by a pin 43 engaging a wall 49 of a vertical slot 42 in a fixed guide 29, and on reversal of rotation, the scrwe 30 performs limited angular movement, allowed by the pin 43 moving across the slot 42 and engaging the other side wall, whereupon a sleeve 28 moves upwardly due to the engagement of pins 46 with grooves 45 in a member 44 secured to the screw 30. Rotational movement of the sleeve 28 is prevented by the engagement of a pin 47 in a vertical groove 48 in the fixed guide 29. The mechanism is used to control the feed rate of an electrode attached to a spindle 19 in a spark erosion machine. The spindle 19 is attached to the end of a pivoted lever 25 having, intermediate its ends, an arm 27 which rests on the sleeve 28. In a modification, shown in Fig. 4, sleeve 28 is mounted directly in guide 29 and has an upper cam surface 50.