baber/WOPTO huggingface dataset:
Patent GB-805389-A (GB)
Title: Improvements relating to multi-ply sheet materials containing polyethylenes
IPC: D06M15/227
Filed: 1957-03-27
Abstract: Evacuated and heat-sealed bags, made of polyethylene film laminated to polyethylene or polypropylene fabric containing stretched and oriented fibres, are used to enclose foodstuffs such as dressed poultry, and are uniformly shrunk around their contents by immersion in liquid at about 100 DEG  C.  Such bags maintain their strength at refrigeration temperatures.
Patent GB-375867-A (GB)
Title: Improvements in the manufacture and installation of electric cables
IPC: H01B9/06
Filed: 1931-04-02
Abstract: 375,867. C a b l e s. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd. and HUNTER, P. V., Hamilton House, Victoria Embankment, London. April 2, 1931, No. 10071. [Class 36.] A method of manufacturing and installing cables of the kind insulated with a solid material, such as paper, formed with interstices adapted to be filled by a compressed gas, such as nitrogen or carbon dioxide, consists in evacuating, filling with the dielectric gas under a pressure slightly above atmospheric pressure, and sealing each sheathed cable length, the lengths thus prepared then being installed and jointed to form a single or plurality of gas tight enclosures each of which is finally charged with additional dielectric gas at the required pressure. To remove any air which may have gained access into the cable during the jointing of the cable lengths, the joints may be evacuated prior to the forcing in of the additional dielectric gas. The interstices may be formed in the paper dielectric by applying the paper strip to the conductor helically in such a manner that spaces are left between adjacent turns, or radial interstices may be provided by employing paper having embossed projections, as described in Specification 344,172.
Patent GB-558964-A (GB)
Title: Improvements in high frequency power valves
IPC: H01J21/06
Filed: 1942-07-20
Abstract: 558,964. Thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 20, 1942, No. 10100. Convention date, June 2, 1941. [Class 39 (i)] The remaining electrodes of a high frequency power valve are supported within the cup-shaped air-cooled anode 1, solely by a round dish-shaped metal header 9 concave to the outside and hermetically sealed at its rim to the envelope 10. The helical cathode 4 is supported by a lead 5 clamped to an insulating bar 6 mounted between the cathode leads 7. The grid 3 comprises parallel wires supported at the top by a carbon disc 24. Some of the wires are riveted to the disc, the others pass freely through it. Cathode leads 7 and a double grid lead pass through insulating seals 8 in the centre of the header. The outer rim 11 of the header is U-shaped. The intermediate portion 12 is conical or hemispherical. The screen grid 2 is supported from the header by a conical shielding conductor 14. A shield 19 screens the seals from the cathode and forms one of the cathode leads, the other passing through insulation 20. A conductive plate 25 is connected by spring fingers 26 to the head and, by its high capacity to the chassis 27, earths the screen grid for high frequency.
Patent GB-1431361-A (GB)
Title: Bag filling machine having door-type inlet valve
IPC: B65B1/18
Filed: 1974-03-06
Abstract: 1431361 Bag filling devices BLACK PRODUCTS CO 6 March 1974 [21 May 1973] 10119/74 Heading B8C A bag filling device includes a chamber 11 having a horizontally extending spout 12 mounted upon a spout supporting frame 13, itself connected to a weighing device 14. The spout is connected to the chamber by a rubber tube 15, controlled by a pinch valve 19, and material from the chamber is urged through the spout into a bag 16 by air from a fluidizing pad 17 located in the sloping base of the chamber 11 and from an inlet 64 located above the chamber. The air inlet 64 is carried by the lower front wall 26 of a valve structure 20 mounted between the chamber and a supply hopper 47. The valve structure includes an upper sloping front wall 25 carrying a baffle 59 which projects into the interior of the structure, a pair of side walls 24 an upper wall with an opening 55 covered by a porous fabric 56 and an opening to the supply hopper, an upper rear wall 27, a lower rear wall 28 and a shoulder 29 connecting the parts of the rear wall. Pivotally mounted in a block 50 located below shoulder 29 is a door 34 of a door type valve, which door is pivotable, by means of a cylinder 45 acting through a lever 43 connected to one end of the shaft 33 carrying the door, from a vertical position (see Fig. 4) to a sloping position (see Fig. 8) in which it engages the lower edge (60) of the baffle 59 to prevent passage of material into the chamber. As the door nears its closed position, air from the chamber passes at increasing velocity upward through the gap between the end of the door and the edge of the baffle, thus preventing material from lodging in the gap, which material in turn would prevent full closure of the door. A switch is provided which is tripped by the weighing device when a bag has been filled, which switch initiates the return of the various elements of the device to their initial positions in readiness for the next filling operation.
Patent GB-422378-A (GB)
Title: Improved grilling pan
IPC: A47J37/10
Filed: 1934-04-03
Abstract: 422,378. Grilling-pans. MONETA, G., and MONETA, A., (trading as MONETA, G.), 20, Via S. Vincenza, Milan, Italy. April 3, 1934, No. 10130. Convention date, March 31, 1933. [Class 66] [See also Group VI] A grilling-pan comprises a corrugated plate A dished at its periphery to form an upstanding wall 4 which projects above the corrugations for a substantial distance to take a lid 2, the dished plate being secured within an annular ring B of considerable depth adapted to form a heat-accumulating chamber C.
Patent GB-469264-A (GB)
Title: Combined electric coupling and fusible cut-out-devices
IPC: H01H85/20
Filed: 1936-04-07
Abstract: 469,264. Two-part couplings. BELLING & LEE, Ltd., and HASLAM, A. G. April 7, 1936, No. 10200. [Class 38 (i)] An insulating member 1, carrying plugs 7 connected to fuse clips 3, 4 is provided with lugs 12 around which the leads are passed and connected to terminals 10, 11 on the fuse clips 8, 9. The leads are gripped between serrated areas 13 and a rib on the cover, conductor entries being provided in the cover on the axis of the rib. The cover is retained on the base by a screw passing through the hole 19.
Patent GB-308486-A (GB)
Title: Improvements in or relating to appliances or devices for cracking or breaking nuts
IPC: A47J43/26
Filed: 1928-04-05
Abstract: 308,486. Richards, H. Temple-. April. 5, 1928. Nutcrackers.-A device for cracking nuts or for breaking the shells of lobster claws comprises a pair of arms or levers A, B pivoted together at one end a and with handles or hand grips A<1>, B<1> at the other end, and a supplementary lever C pivoted at one end to one of the levers A intermediate its ends and adapted to be acted upon at its free end by the other lever B. Seats a, c and a<2>, c<2> for large and small nuts may be provided. The free end' of the lever C may be connected to the lever B by a spring or a link which will permit the necessary relative movement between the levers..
Patent GB-558968-A (GB)
Title: Improvements in or relating to sewing
IPC: D05B15/04
Filed: 1942-07-24
Abstract: 558,968. Sewing-machines. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). July 24, 1942, No. 10345. [Class 112] A rotary take-up 18 operates between two thread locks 48, 66 which are controlled so that the take-up draws the needle thread loop to a predetermined position and then pulls off thread for the next stitch. The stitch is afterwards set by a bodily movement of the lock 48 between the take-up and the work. The latter lock takes the place of the frictional tension device of the machine described in Specification 532,026 and, during the threading of the needle, is used in the same manner as a frictional tension device under the control of the needle-thread finger 14. The lock 48 comprises a U-shaped arm 48 and an arm 60, both pivoted upon a pin 38 carried by a bell-crank lever 40. When the lock is closed, the lever 40 is rocked by a camlever 83 through connections 82, 80, 79, 77 to set the stitch. The lock is resiliently closed by a cam-lever 56 acting through a spring 102 and a rod 50 pivoted to the arm 48. The arm 48, being rocked counterclockwise carries the other arm 60 with it until the tail of the arm 60 is stopped by a cam 62 and thereupon the lock is closed. The cam 62 is mounted on a pin 64 and through a lever arm 70 is connected to the presser so that the position of the cam 62 is determined by the thickness of the work. The moment in the stitch cycle when the lock is closed is thereby determined by the thickness of the work and, consequently, also, the amount of thread pulled off by the take up for the next stitch. Thereafter the downward movement of the lock, which is invariable, draws the stitch to a predetermined distance within the upper surface of the work. The lock 66 between the supply and the take-up is closed by the opening movement of the lock 48. The upper end of a rod 100 lies over a tail-piece of the lever 48 and, as the latter rotates clockwise, the rod is lifted and, through a lever 96, a spring 106 and a strut 93, the lock lever 92 is actuated. This lever is pivoted upon an eccentric portion of the boss of the cam 62 so that the single adjustment by the presser through the arm 70 controls the timing of both locks. Specification 357,596 also is referred to.
Patent GB-687390-A (GB)
Title: Improvements in or relating to the dehydrohalogenation of polyhalogenated hydrocarbons
Inventor: HAWORTH JOHN WYNNE
IPC: C07C17/25
Filed: 1951-05-03
Abstract: Unsaturated halides are made by the monodehydrohalogenation of normally liquid saturated aliphatic polyhalogenated hydrocarbons containing unreplaced hydrogen and is effected by passing a stream of the vapour of the polyhalogenated hydrocarbon over a metal heated to above 600 DEG  C., the vapour itself being at a temperature substantially lower than that of the metal, and separating the unsaturated halogenated hydrocarbon from the mixture of vapours obtained, the surface area of the metal in contact with the vapour stream being such that the temperature of the vapour is not substantially increased during its passage thereover.  The metal is preferably in the form of an electrically heated filament. Preferably the polyhalogenated hydrocarbon is vaporized, the vapour passed over the filament and unchanged material separated from product, e.g. by condensation, before recycling.  The filament may be suspended in the vaporizing vessel so that the vapours pass over it on leaving the vessel or the vapours may be passed to a separate vessel containing the filament and unreacted material passed back to the boiler via the filament.  Suitable arrangements of apparatus are shown in connection with both modifications.  The temperature is preferably 800-1000 DEG C.  Vinyl chloride, vinyl bromide, propenyl chloride, 1,2-dichloroethylene and trichloroethylene may be made from ethylene dichloride, ethylene dibromide, propylene dichloride, 1,1,2-trichloroethane and 1,1,2,2-tetrachloroethane respectively.  In examples, the products specified above are made by passing the appropriate halide over a metal filament at about 900 DEG  C.
Patent GB-789994-A (GB)
Title: Weft replenishing loom
IPC: D03D45/20
Filed: 1955-04-12
Abstract: 789,994. Automatic bobbin changing in change-box looms. CROMPTON & KNOWLES LOOM WORKS. April 12, 1955 [April 23, 1954], No. 10436/55. Drawings to Specification. Class 142(2) In a loom weaving two body colours pick-and-pick for a period, followed by double picks of the same two wefts for another period (with occasional double picks of decorative wefts), the changebox and picking motions are controlled by the pattern chain to provide an opportunity of replenishing each body weft once in every period. Bobbin changing occurs when a depleted shuttle is in the upper cell of a two-cell box, and the box is in its upper position with the lower cell empty to permit the ejected bobbin to fall through it, which condition is maintained for the necessary time by operating the picking stick in the empty lower cell, whereby no shuttle is picked on one revolution when weaving IXI or on two consecutive revolutions when weaving 2X2. A side-slipping weft feeler operating in the upper cell at the magazine end has its electrical circuit controlled by the pattern chain so as to function only when replenishment is possible; the bobbins have reserve bunch long enough to last through the non-automatic part of a period. The weft fork is prevented from stopping the loom during the revolutions when no shuttle is picked by a shield moved by the pattern chain so as to hold the weft fork dagger clear of the knockoff lever; the same connection from the pattern chain lifts the take-up pawl from its ratchet wheel. U.S.A. Specifications 2,333,904 and 2,360,852 are referred to.
Patent GB-880183-A (GB)
Title: Improvements in dehydration
IPC: F26B17/24
Filed: 1957-04-01
Abstract: 880,183. Drying apparatus. GLASER, W., and SCOTT & SON (LONDON) Ltd., GEORGE. March 17,1958 [April 1,1957; Oct. 18, 1957], Nos. 10503/57 and 32532/57. Class 34(2) A method of dehydration of solids carried out in a manner simulating a fluidized bed of the said solids is characterized in that a ring-shaped bed of the said solids is driven around the side walls of a containing vessel through an up and down zig-zag movement of the particles of the said solids, created within the vessels by beaters, which beaters are rapidly revolving at the bottom of the vessel and define by their lower boundary the lower boundary of the bed which is heated at least in part by the mutual friction of the bed particles. In the apparatus shown material is dried "in vacuo" in chambers a1, a2, a3, the necessary heat being derived from frictional contact of the particles as they are whirled around by rotating beater arms b1, b2, b3. The vacuum is maintained in the chambers through connections h, g<SP>1</SP>, g<SP>2</SP> and the material being dried passes from chamber to chamber through valve controlled conduits i1, i2 under the action of the beaters to eventually emerge in a dehydrated state through a valve j3. Fruit, vegetables and meat as well as liquid or semi-liquid milk, coffee extract, fruit pulp, pharmaceuticals and oil shale may be dehydrated in the apparatus. A simulated fluidized bed of solids must exist in the or each vessel before the dehydration according to the invention is commenced. Additional heat may be supplied if necessary through the walls of the or each vessel via a steam heated jacket. The walls of the vessel may alternatively be heated by combustion gases.
Patent GB-798731-A (GB)
Title: Improvements in or relating to electronic amplifiers
IPC: H04B1/16
Filed: 1956-04-06
Abstract: 798,731. Valve amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 6, 1956 [April 9, 1955], No. 10582/56. Class 40 (6). A power amplifier comprises a screened valve 1, a resistor 3 and a triode 2 all connected in series across a supply voltage of which nearly the whole is fed to the screen of valve 1. The input is applied to the grid of valve 1 which provides an anti-phased voltage across resistor 3 as input to valve 2. The output is taken from valve 2 cathode to an 800-ohm loud-speaker 4. The resistors 7, 8, which also decouple the supply to earlier stages, are proportioned so that the hum due to the supply ripple is minimized by action of the screen. It is stated that both valves may be contained in the same envelope and that non- linear distortion in the valves tends to cancel.
Patent GB-107056-A (GB)
IPC: F02M21/00
Abstract: 107,056. Pugh, G. E. June 14, 1916. Carburetting.-The carburettor described in the parent Specification is provided with a throttle valve s and an automatic secondary-air valve r in the induction passage m and with means for controlling the shutter o both synchronously with and independently of the throttle valve s. The shutter o may comprise two parallel plates, one connected by links to the throttle valve and the other controlled by separate means; or, as shown in Fig. 3, the shutter o is connected by links v, t, w<1>, w<2>, to the throttle valve s, a link and crank-pins k, j on disk y being provided to enable the shutter o to be raised or lowered independently of the throttle valve. The lower end of the link w<2> is slotted and a spring p tends to keep the upper end of the slot and the pin s<2> in contact.
Patent GB-718209-A (GB)
Title: Improvements in or relating to removing organic fluorides from hydrocarbons
Inventor: JANOSKI EDWARD JOHN
IPC: C07C7/171
Filed: 1952-04-30
Abstract: Organic fluorides, i.e. monofluorhydrocarbons, are removed from substantially saturated hydrocarbons by contacting with concentrated sulphuric acid having a salt or oxide of a rare earth metal incorporated therein.  The acid is of 90-100, preferably 93-98, per cent concentration and the rare earth salt is preferably the sulphate, acid sulphate, carbonate, bicarbonate, nitrate, phosphate or acid phosphate.  Rare earth metals specified are cerium, yttrium, scandium, lanthanum, praseodymium, and neodymium.  Preferably a saturated solution containing an excess of the salt or oxide is used, and a siliceous material such as silica gel, diatomaceous earth or clay is present, e.g. 0.5-10 parts silica gel per 100 of absorbing solution.  The hydrocarbon may be paraffinic or cycloparaffinic, gaseous or liquid, and operation may be in the liquid or gaseous phase.  Alkyl fluorides may be removed from products of alkylation using hydrogen fluoride as catalyst.  Unsaturated fluorides such as 1-fluorbutene-2 may be removed but the fluorine is preferably attached to a saturated carbon atom.  Aromatic and olefinic hydrocarbons may be present up to, say, 1 per cent.  Temperature may be about 15-200 DEG  C., and pressure atmospheric or above or below. Any hydrogen fluoride or silicon fluoride in the effluent hydrocarbons may be removed by known means.  The precipitate forming in the absorbing solution is removed, heated to form the rare earth oxide, and re-used. Alternatively, it is dissolved in water, whereby any silica is removed, precipitated with caustic soda, treated with air or chlorine, filtered, dried, and added to sulphuric acid, preferably in the presence of platinum.  Examples illustrate the absorbing action of sulphuric acid solutions having an excess of ceric bisulphate on ethyl fluoride at different temperatures and on organic fluorides in a propane stream in gaseous or liquid phase, either with or without addition of silica gel.  The use of a lanthanum sulphate solution is also illustrated.
Patent GB-866367-A (GB)
Title: Improvements in or relating to the manufacture of electric cables
Inventor: DAVEY EDWARD LESLIE
IPC: H01B13/30
Filed: 1958-04-03
Abstract: 866,367. Coated paper tape. BRITISH INSULATED CALLENDERS (SUBMARINE CABLES) Ltd. April 2, 1959 [April 3, 1958], No. 10854/58. Drawings to Specification. Class 140. [Also in Groups XI and XXXVI] Paper tape for the insulation of electric cables is made by impregnating sheets of paper with a setting compound; removing surplus impregnant; cooling, slicing the sheets into strips and winding them rather loosely into flat rolls, the tension being controlled so that there is just sufficient spacing between turns of a roll to permit a thin coating of compound to penetrate therebetween when the coiled tape is subsequently immersed in molten setting compound under vacuum. The impregnated and coated tape is applied to the cable core by passing it over a heated pin to re-melt the compound coating (see Group XXXVI).
Patent GB-1358612-A (GB)
Title: Monolithic semiconductor device
IPC: H01L21/74
Filed: 1972-03-09
Abstract: 1358612 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 9 March 1972 [28 April 1971] 10900/72 Heading H1K A monolithic semi-conductor device is made by introducing two donor (acceptor) impurities with different diffusion rates into one or more areas of a surface of a P(N)-type wafer then epitaxially depositing P(N)-type material over the surface and heating to form regions of N(P)- type extending to new surface by out-diffusion of the faster diffusing impurity, and finally introducing impurities from the surface to form a bipolar transistor within the or one of the thus formed regions and a field effect transistor outside the regions or in another of them. There are FETs in both positions in the Fig. 6 embodiment which is made on a 100 orientated 10-20 ohm cm. P-type silicon wafer into which the donors phosphorus and arsenic are introduced by capsule diffusion before deposition of a 2 ohm cm. P-type silicon layer. After out-diffusion is completed boron is diffused in through oxide masking to form the base and the source and drain regions of the bipolar transistor 16 and P channel FET 19 respectively, and then after remasking arsenic is diffused in to form the bipolar transistor emitter and the source and drain of the N channel FET. Finally the oxide is removed from the gate sites and replaced by a thinner layer covered with phosphosilicate glass to form a charge stabilized gate insulation and electrodes provided in conventional matter. Details are given of the diffusion and masking steps. Specification 1,306,817 is referred to.
Patent GB-866813-A (GB)
Title: Improvements relating to the production of dense bodies of silicon carbide
Inventor: POPPER PAUL
IPC: C01B31/36
Filed: 1958-04-08
Abstract: Dense, self-bonded, silicon carbide bodies are prepared by compacting a mixture of granular SiC, powdered C, and a temporary binder to form a shaped body, and heating the body in the presence of a vapour including silicon to effect reaction between the Si and C.  The carbon may be colloidal, or graphite and the mixture with SiC and the temporary binder, e.g. polyvinyl alcohol solution, is shaped by pressing, extrusion, or casting.  The Si may be introduced as vapour from evaporation of elemental Si, or as a compound, e.g. silanes or SiCl4, and reaction may be at subatmospheric pressure.  The body may be siliconized by heating to 1800-2300 DEG C., or to 1500 DEG C. in vacuo, held at this temperature, and rapidly cooled.  As a modification, graphite bodies may be coated, e.g. by spraying or dipping, with a slip of SiC, C, and temporary binder mixture, which is thereafter siliconized.
Patent GB-1416416-A (GB)
Title: Process for the production of discontinuous fibrils
Inventor: PLESKA JEAN-PIERRE
IPC: D21H17/55
Filed: 1974-03-12
Abstract: 1416416 Producing discontinuous fibrils SOLVAY & CIE 12 March 1974 [12 March 1973 26 Nov 1973] 10976/74 Heading B5B Discontinuous fibrils are produced by suddenly releasing the pressure on a two-phase liquid (as defined) comprising a molten polymer and a latent solvent (as defined). The liquid mixture is at a temperature and pressure high enough, and has a concentration of polymer such that, the mixture is both liquid and two-phase. The reduction of pressure is so performed that the mixture is rapidly ejected through an orifice in the form of an ejection cone, the latent solvent evaporating and the polymer solidifying instantaneously. The ejection cone is atomized, a preferred atomizer arrangement being illustrated in Fig. 4 where the cone issuing from spinneret 1 is atomized by rotating toothed wheel 2. In examples fibrils are made from high density polyethylene, with n-hexane being used as the latent solvent.