baber/WOPTO huggingface dataset:
Patent GB-724267-A (GB)
Title: Process of producing a closed-cell cellular thermoplastic resin article
IPC: B01D19/02
Filed: 1952-11-10
Abstract: A closed-cell cellular thermoplastic resin article having wrinkled cell walls is prepared by causing the gas pressure in the closed cells of a previously formed gas expanded cellular thermoplastic resin body to be reduced to below atmospheric pressure and allowing atmospheric pressure to act partially to collapse the closed cells and cause the cell walls to be wrinkled. Specified resins are polyvinyl chloride, copolymers of vinyl chloride, particularly with vinylidene chloride, polyvinyl butyrate, acetate, alcohol, formal or butyral, polyvinylidene chloride, polystyrene, polydichlorostyrene, polyalphamethylstyrene, polymethyl or ethylacrylate and polymethyl methacrylate.  Plasticizers such as dimethyl, dibutyl and dioctyl phthalates and tricresyl phosphate may be present, while the original cellular article may be made by using as solvent acetone, methyl ethyl ketone and ethyl acetate, and as blowing agent azoisobutyric dinitrile, alpha, alpha-azobisisobutyronitrile, diazoaminobenzene, 1,3-bis-(p-xenyl)-triazene, sodium bicarbonate and oleic acid, ammonium carbonate and mixtures of ammonium chloride and sodium nitrite.  A quick or a slow diffusing gas may be used, or a mixture of one of each, e.g. hydrogen and carbon dioxide.  The gas pressure may be reduced in the cells by causing at least a portion of the gas to escape therefrom, e.g. by applying a vacuum, preferably with heating.  The outer crust is preferably removed from the cellular body which is then sliced into thin sheets having a thickness of 10-40 mm. before it is treated to reduce the gas pressure in the closed cells.  The original closed-cell article may be subjected at a raised temperature and at least atmospheric pressure to an atmosphere consisting at least partly of a vapour which is a liquid at room temperature, so as to cause the vapour at least partially to replace the gas in the closed cells, and then cooled so causing the vapour to condense, the pressure inside the cells to be reduced and the cells to collapse partially so wrinkling the cell walls.
Patent GB-733654-A (GB)
Title: Machine for collating biscuits and like thin articles for wrapping purposes
Inventor: FORSTER LESLIE GORDON
IPC: B65B23/14
Filed: 1952-11-10
Abstract: 733,654. Feeding biscuits to endless conveyers. FORSTERS MACHINE CO., Ltd. Nov. 10, 1953 [Nov. 10, 1952], No. 28324/52. Class 78 (1). A biscuit collating machine comprises hoppers A-J in which the biscuits are first stacked, the lowermost biscuits in the respective stacks being at different stepped levels, means 40 for moving the lowermost biscuit in. each stack transversely so that it enters on or between a set of horizontal guide plates whereby a group of biscuits supported by the guides is formed, and conveyer means 74 for moving the group of biscuits as a group longitudinally of the machine and between said guide for, delivery to a wrapping machine. As shown, a typical hopper A (Fig. 4) has its two front anglemembers 6a, 6b carried respectively by bars 13, 14 separately or collectively adjustable, and its back rods 7, 7a carried by bar 23, also adjustable. These bars are carried so that the hopper system pivots about 30 so as to give access to the conveyer 74. The hoppers A-J have their lowermost biscuits on guides 56 positioned at different levels, the biscuits resting on removable blocks on said guides, the blocks being of different thicknesses to suit different biscuits. The biscuits are discharged from the hoppers to the conveyer 74 by plungers 41, which plungers are on different levels and of which two may be coupled to work together, the plungers being oscillated by cams 50 operated synchronously by conveyer 74. The biscuits are then pushed forward by a finger of the endless conveyer 74 so that one by one they enter a guide 56 (Fig. 7) and, since the guides are short, one by one drop on to each other to form a group which is pushed around a curved guide till it falls on to the bed of a wrapping machine. With each plunger is associated a brush under which the plunger pushes the biscuit towards the conveyer. The fingers of conveyer 74 may be rounded to engage round biscuits, and may be adjustable in position. Specification 712,829 is referred to.
Patent GB-152032-A (GB)
Title: Improvements in electric heating devices
IPC: H05B3/00
Filed: 1920-10-07
Abstract: 152,032. Maag, F., (Assignee of Bergamin, G.). Oct.. 8, 1919, [Convention date]. Resistances.-A heating-unit for a flat-iron, cooking or heating apparatus, &c. comprises a resistance wire wound about a core a of asbestos or other insulating-material and secured to a refractory plate c by a fireproof mass d containing water-glass.
Patent GB-1182733-A (GB)
Title: Reflection-Coefficient Measuring Apparatus
IPC: G01R21/00
Filed: 1968-06-14
Abstract: 1,182,733. Measuring reflection coefficient. GENERAL RADIO CO. June 14, 1968 [June 14, 1967], No. 28412/68. Heading G1U An apparatus for measuring reflection coefficient of an impedance or circuit Zx incorporates a constant alternating voltage source 6 which provides balanced out of phase voltages at output terminals at a predetermined characteristic impedance and a polygonal resistance chain network 8 with ports P1-P5 at the junctions of the resistors. The balanced voltage is applied at the ports P1, P2. A reference impedance Zs is connected between P3 and ground, a matched detector V D  to P4 and the unknown Zx to P5. The resistors of the chain are such that the detector indicates zero when Zx=Zs, zero reflection occurs at P5 when all other ports are terminated in the characteristic impedance, and a relatively low insertion less exists between the source and detector when P5 is open circuited. The detector measures directly the complex reflection coefficient of Zx. The arrangement for providing constant balanced alternating voltage incorporates a balun for making the measurement relatively frequency independent. Two short circuited transmission line sections 1 and 3 are disposed in a cavity structure 6, and the inner conductors are fed via characteristic impedances R1, R2 from the inner and outer of a coaxial line 4 to which the unbalanced source 2 is connected. A diode D connected across the coaxial line acts as a control to keep the output independent of frequency. The inner conductors of the line sections are connected to P1, P2 to provide the balanced signal. Lossy dielectric or magnetic loading LD may be included in the cavity 6 to minimize loading on the source. The resistors of the polygon, if of five sides as shown in Fig. 1, each have value #(#13-1 / 2)#Zs. However the polygon may be 8 sided (Fig. 2) in which case the resistors are approx. 4/3 Zs and the three additional junctions are granded through resistors of value Zs, or R3 may be omitted, P1 and P2 then being grounded through resistors of value 2Zs. The resistor network is formed as a unitary structure on an insulating beryllia wafer.
Patent GB-771952-A (GB)
Title: Titanium alloy
Inventor: FREDRICKSON JAY WARREN
IPC: C22C14/00
Filed: 1955-10-05
Abstract: A titanium-base alloy combining hightemperature oxidation resistance, high strength and ductility has a composition with the following range .Al.2.0 - 7.0.per cent .Zr.0.5 - 5.0.per cent .Ti and impurities the remainder...  The impurities should not exceed 0.5 per cent by weight of the Ti used.  Examples are given of alloy made from Ti containing Al 0.05 per cent, Cu 0.0058 per cent, Fe 0.019 per cent, Mg 0.015 per cent, Mu 0.065 per cent, Si 0.026 per cent, V<0.005 per cent, Zr 0.05 per cent, W<0.1 per cent and C<0.064 per cent.  The alloys may be made by mixing the constituents together in particulate form and melting, using an electric arc in an inert atmosphere.
Patent GB-254947-A (GB)
Title: Improvements in the manufacture of printers inking rollers
IPC: B41N7/06
Filed: 1925-11-11
Abstract: 254,947. Burkill, C. Nov. 11, 1925. Inking-apparatus. - In the manufacture of printers' inking-rollers from a mixture of starch and magnesium chloride solution, the latter is used in highly concentrated (about 38‹ BÚ) solution, made by exposing magnesium chloride to the atmosphere until the moisture absorbed produces a solution, then pouring this solution over undissolved magnesium chloride until the desired concentration is reached.
Patent GB-517496-A (GB)
Title: Improvements in or relating to photographic cameras provided with range finders
IPC: F02F1/06
Filed: 1938-09-30
Abstract: 517,496. Photographic range and view finders. KODAK, Ltd. Sept. 30, 1938, No. 28443. Convention date, Sept. 30, 1937. [Class 98 (i)] A camera for use with interchangeable objectives, comprises a range finder coupled with the objective focusing means, an adjustable view finder and means for simultaneously adjusting the movable element of the view finder and varying the coupling between the focusing means and the light-deviating means of the range finder in predetermined relation. The camera, Figs. 1, 2, comprises a detachable objective 2 mounted in a focusing sleeve 3 having a pin 18 mounted thereon, a view finder comprising a field lens 8, eyepiece 9 and adjustable dispersive element 10, and a range finder comprising a beam-combining element 26, a -beam-accepting element 27 provided with a lens 28 and a beam-accepting element 29 provided with light-deviating means 25. Axial movement of the sleeve 3 is transmitted through the pin '18 to a lever 19 pivoted at 20 and a lever comprising parts 21, 22, the former of which is in contact with the lever 19 at 24, to adjust the means 25 carried by the part 22' which is pivoted at 23. The parts 21, 22 are coupled by means of turned-down edges of the part 21 near the end 30; the pivot 23 also passes through a slot in the part 21. A resilient member 31 urges the end 24 into contact with the lever 19 and another resilient member, in the slot, urges the part 21 to overlap the part 22 as much as possible. A control knob 11 moving over an index 12 is mounted on a spindle 13 carrying cams 14, 32, the former of which coacts with a pin 15 on a lever 16 pivoted at 17 and carrying at its other end the view-finder -element 10 and the latter of which coacts with a cam surface 30 on the end of the part 21 of the transmitting lever. In another form, Fig. 3, the ,pin 18 operates a lever 33 sliding axially over pins in a slot 35 to which lever is pivoted a transmitting lever 22 having a. slot 37; this slot lies vertically above a corresponding slot in the camera casing and a pivot 36 moves in these slots. Mounted on the pivot 36 is a bell-crank lever having slots 40, 42 moving over fixed pivots 39, 41 and comprising a cam surface 43 coacting with a pin 44 on the lever 16 which is mounted and actuated as in Fig. 2. The light-deviating means 25 is as described in Specification 499,782.
Patent GB-758076-A (GB)
Title: An improvement in or relating to the manufacture of a pyridine homologue
Inventor: BAMFORD WILLIAM RANDAL
Filed: 1954-10-04
Abstract: 5-Ethyl-2-methylpyridine is prepared by heating under pressure to a temperature of at least 160 DEG  C. paraldehyde and an aqueous solution of at least one of the ammonium salts ammonium acetate, ammonium propionate and triammonium phosphate, the molar concentration of the ammonium salt being preferably equivalent to at least 3 moles. ammonia to every 4 moles. of paraldehyde.  The reaction product is normally treated with ammonia to neutralize the acid formed and 5-ethyl-2-methylpyridine isolated by extraction with a volatile organic solvent, particularly chlorinated hydrocarbons, or aromatic hydrocarbons (e.g. benzene or toluene).  The remaining aqueous layer is then concentrated by evaporation and recycled with more paraldehyde.  Alternatively, the pyridine derivative is separated by steam-distillation, preferably after neutralization as above.  In examples: (1) paraldehyde and claved at 200 DEG  C., mixture cooled, neutralized with ammonia, and 5-ethyl-2-methylpyridine isolated by extraction with chloroform or trichlorethylene and fractionation of the organic layer; (2) and (3) as in (1), using ammonium propionate and triammonium phosphate respectively.
Patent GB-658484-A (GB)
Title: Improvements in and relating to eccentric presses
IPC: F16D11/02
Filed: 1949-11-07
Abstract: 658,484. Operating clutches. NAAMLOO ZE VENNOOTSCHAP NEGUM, and HAMMERSCHLAG, G. Nov. 7; 1949, No. 28509. [Class 80(ii)] In a mechanical press in which the stroke of the tool is adjustable by means of an adjustable eccentric 18, the point at which a rotary key clutch 8 disengages the. drive from a flywheel 9 to the eccentric shaft 3 is also adjustable. An abutment 7 for engaging the key is radially slidable in a cover 2 which can be angularly adjusted in relation to the machine frame 6 by means of bolts 4 sliding in a circular groove 5. The abutment 7 is adapted to be actuated by a pin 10 on a lever 11 which is pivoted at 12 to the cover 2 and is adapted to be locked by, a bolt 13 in a circular groove of a ring 14 which is operated by the clutch control rod 16 of the machine through an arm 15 and guided for concentric movement by three rollers 20. Thus by unlocking bolts 4 and 13 and moving the cover 2  to a fresh position and relocking these bolts the position at-which the key clutch is disengaged is altered without upsetting the control mechanism.
Patent GB-705564-A (GB)
Title: Improvements in or relating to electromagnetically vibrated measuring spoons
IPC: H02K33/10
Filed: 1952-11-14
Abstract: 705,564. Measuring spoons. METTLER, E., [trading as METTLER FABRIK FUR ANALYSENWAAGEN. E]. Nov. 14, 1952 [Oct. 16, 1952], No. 28826/52. Class 128 [Also in Group XXXV] An electromagnetically vibrated spoon 1 has a stem 3 arranged to be attached to a tube 7 which is vibrated by a permanent magnet 24 which, together with the exciting'coil 14, is fitted inside the spoon handle 6. The movement of the magnet 24 in the right-hand direction is limited by a rubber cushion 27, while the movement in the opposite direction is limited by a flangeshaped extension 26 in the tube 7. By unscrewing an end piece 20, it is possible to draw all the vibrator parts out of the handle to the right. The coil 14 can be fed either with A.C. or with D.C. in combination with an interrupter.
Patent GB-1087897-A (GB)
Title: Improvements in or relating to heating apparatus for automotive vehicles
IPC: F24H3/06
Filed: 1965-07-07
Abstract: 1,087,897. Spray carburetters. SOC. ANON. ANDRE CITROEN. July 7, 1965 [July 7, 1964; Jan. 15, 1965], No.28857/65. Heading F1B. [Also in Division F4] A diaphragm carburetter 35 supplies a fuelair mixture to the combustion chamber of a vehicle air heater (see Division F4) under the influence of an induction fan which withdraws the combustion gases from the combustion chamber. Air enters the mixing chamber 62 of the carburetter through a filter 63. Fuel (e.g. petrol) passes to chamber 62 via a chamber 52, a jet 53 closable by a valve 54, chamber 59 and manually adjustable needle valve 61. Valve 54 is opened by movement of a diaphragm 65 forming one wall of chamber 59, the diaphragm moving inwards under the influence of the vacuum caused by the induction fan, and a pin 57 then co-operating with a lever 55 to open valve 54. On ignition of the fuel-air mixture, the pressure increases, thus relaxing diaphragm 65 and closing jet 53, until the pressure is again reduced by the fan. If the heater exceeds a preset temperature a thermostat on the heater causes a current to flow through a solenoid 64 which then attracts the diaphragm to prevent the opening of jet 53 and the flow of fuel.
Patent GB-1027908-A (GB)
Title: Spray gun for two component paints, with separate concentrical nozzles
IPC: B05B7/06
Filed: 1964-07-14
Abstract: 1,027,908. Spray guns. U. CASSANMAGNAGO and C. CASSANMAGNAGO, [trading as FRATELLI CASSANMAGNAGO] and A.PALMEGIANO and U. MILANESI [trading as ATTREZZATURE "WALLY"]. July 14, 1964 [July 17, 1963], No. 28939/64. Heading B2F. A spray gun comprises three concentric nozzles wherein in the operative condition the two inner nozzles deliver material to be sprayed, the outer nozzle delivers compressed gas such as air, whilst in the inoperative condition compressed gas is delivered to the innermost nozzle which is thereby scavenged. In the operative condition button 5 causes high pressure gas to be delivered to tubes 21, 8, the former causing the piston 20 to move upwards drawing with it the tube 19 and hence seat 26 of the valve 27. Catalyst fed under pressure to tube 18 opens the valve, against the spring 29, and thus emerges from the nozzle 35. At the same time the upward motion of tube 19 pulls the nozzle 35 inwards so opening nozzle 37 to permit passage of paint fed in at 11. Furthermore the high pressure gas entering the space 15 passes down tubes 24,12 to the outermost nozzle 40. Release of the button 5 allows only low pressure gas to be applied to tubes 8, 21, so that spring 21 pushes piston 20 downwards to shut off the gas fed to the nozzle 40 via tube 24. The piston also moves tube 19 and the valve 26, 27 downwards, contact of the valve 27 with the nozzle portion 34 causing the valve to close and shut off the flow of catalyst. Moreover the spring 27<SP>1</SP> pushes the inner nozzle 35 into the nozzle 37 to cut off the point supply. Finally with the tube 19 in the downward position low pressure gas passes from the tube 8 down longitudinal grooves 30 through a now open valve 33<SP>1</SP> and down further grooves to a diametral slot in the lower face of valve 27 and thence to orifice 35 for the scavenging thereof.
Patent GB-631558-A (GB)
Title: Improvements in and relating to reciprocating cleaning mechanisms for the felts and wires of a fourdrinier machine and for like purposes
IPC: D21F1/32
Filed: 1947-10-30
Abstract: 631,558. Drive mechanism in paper-making machines. SCHOFIELD, G. J. Oct. 30, 1947, No. 28940. Convention date, June 22, 1945. [Class 96] The lead-screw for reciprocating the nozzle of a wire- or felt-cleaning appliance across a papermaking machine is driven through automatic reversing gear (not shown), a shaft 24, a clutch 28, a pinion 26 and a spur gear 56 or spur gears 81 and 56, on stub shafts 54, 80 which are interchangeable and are driven by a pulley 84 &c., the arrangement providing for rotation of the shaft 24 in the right direction from any convenient point on the machine. Each of the shafts 24, 54, 80 has an axial lubricating .passage connected by a radial bore with a circumferential groove registering with a port in the bearing. The lead-screw is in a sleeve lubricated via a ported block bearing against its rim.
Patent GB-382057-A (GB)
Title: Improvements in superheterodyne wireless receivers
IPC: H03D7/08
Filed: 1931-10-16
Abstract: 382,057. Valve circuits for wireless reception. WULLENWEBER, O., 6, Voldgade, Sonderburg, Denmark. Oct. 16, 1931, No. 29016. [Class 40 (v).] In a superheterodyne receiver, the received frequency is supplied directly to the grid of an oscillator-detector g, and is prevented from neutralizing itself across the grid circuit f, or leaking away from the grid to the cathode, by inserting one or more elements e of high alternating-current resistance or an oscillatory circuit tuned to the received frequency. The alternating-current resistance is varied stepwise or continuously to vary the coupling of the grid of the oscillator to its oscillatory circuit. When an ohmic resistance is used, it also acts as a grid-leak h, Fig. 2 (not shown). The oscillator-detector is a screened-grid valve or pentode.
Patent GB-411738-A (GB)
Title: Improvements in and relating to methods of forming cores for dynamo electric machines
IPC: H02K1/16
Filed: 1933-10-20
Abstract: 411,738. Making dynamo &c. cores. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Wry, T. A. ; 409, Broadway, Lynn, Massachusetts, U.S.A.) Oct. 20, 1933, No. 29080. Convention date, Oct. 26, 1932. [Class 83 (ii).] Cores for dynamoelectric machines are made from a strip S of magnetic material by severing along lines 8, 9, Fig. 2, to form overhanging teeth 5 with coil slots between the teeth, separating the strips and bending edgewise to helical form and annealing. Specifications 406,951 and 412,472 are referred to.
Patent GB-1457364-A (GB)
Title: Travelling wave shedding looms
IPC: D03D47/26
Filed: 1974-07-01
Abstract: 1457364 Travelling wave shedding looms WIRKMASCHINENBAU KARL - MARX - STADT VEB 1 July 1974 [2 July 1973] 29091/74 Heading D1E The shuttles 1 of a travelling wave shedding loom are fed to the helical groove 3 formed by blades 2 on a picking shaft by means of pins 6 resiliently mounted on a conveyor chain 4 whose driving sprocket is adjustably mounted on its shaft to provide adjustment of the position of the pins 6 relative to the groove 3.
Patent GB-859882-A (GB)
Title: Improvements in or relating to the manufacture of cheese
Inventor: BUDD RICHARD THOMAS
IPC: A23C19/072
Filed: 1958-09-11
Abstract: 859,882. Cheese. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 2, 1959, [Sept. 11, 1958], No. 29120/58. Class 84. Curd is fed to the upper part of a column 10 down which it flows under its own weight as it is removed from the bottom at such a rate that cheese of the required texture is produced. The column preferably tapers outwardly and is lagged to prevent loss of heat. Heating means may also be provided. The device for removing the cheese is shown in detail in Fig. 2 and comprises a plate 16, on which the curd rests, shaped helically to form a slot 19 which has a knife 17 at its upper edge and which is divided by vertical knives 20. The severed portions of cheese fall on to a conical plate 27 and are swept by rotating vanes 30 into a shoot 29. The whey drains through slots 33 into a tray 26, Fig. 1, The plate 16 is driven by a motor 25 through a variable speed gearbox 22. In another form the plate 16 is formed with two diametrically opposite slots and cutting edges. Alternatively, the slots may be formed between the adjacent leading and trailing edges of a number of inclined plates arranged in stop form and carried on a continuous band or at the periphery of a disc. Such a device may serve a number of columns 10 arranged side-byside. Various methods of charging and discharging the column 10 at the beginning and end of a run are described.