baber/WOPTO huggingface dataset:
Patent GB-1415744-A (GB)
Title: Method and a machine for sawing a workpiece such as wood and or  synthetic material
IPC: B27G19/10
Filed: 1973-06-15
Abstract: 1415744 Reciprocating saws LKLOOSTER 15 June 1973 [19 June 1972] 28655/73 Heading B5L A method of sawing wood and/or synthetic material with the aid of a saw having a straight or substantially straight edge comprises moving the ends of the saw blade in opposite directions of rotation about circles struck from axes lying in a plane at right angles to the direction of feed movement of the workpiece, at least one of said ends being rotated at a variable speed during each revolution so that the angle of the cutting edge relative to the direction of feed movement of the workpiece continually changes so that in each stroke only part of the thickness of the wood or material is cut. In a machine for performing the method a workpiece 35 is fed to a saw blade 32 by upper and lower sets of driven rollers. The ends of the blade 32 are supported eccentrically on discs 30 31 driven in opposite directions by the shafts 28, 29 of asynchronous electric motors 26, 27. The shafts also carry eccentrically mounted gears 37, 38 connected by a toothed belt 39, the gears being so arranged that they vary the rotational speeds of the shafts 28, 29 to maintain the distance between the supports 33, 34 of the saw blade constant. A number of saw blades may be carried by the supports 33, 34 as indicated in Fig. 3. Jets of air may be applied to the saw blade 32 intermittently from nozzles 40, 41, to clear and cool it. The saw blade teeth are arranged in two groups the teeth of one group being orientated toward or away from those of the other group depending on the directions of rotation of the discs 30, 31.
Patent GB-1028594-A (GB)
Title: A method of transporting in pipelines solid particles in dispersion within a carrier liquid
IPC: B65G53/30
Filed: 1964-07-13
Abstract: 1,028,594. Conveying solids in liquids. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. July 13, 1964 [July 15, 1963], No. 28784/64. Heading F1R. Particulate solid material is conveyed in a pipeline in a liquid in which the solid particles are essentially insoluble in the form of agglomerates which are produced by means of a film of an agglomerating liquid on the surfaces of the solid particles, the agglomerating liquid being substantially insoluble in the conveying liquid. Examples are given in which water soluble solids are conveyed in oil, water being the agglomerating liquid. With water as the conveying liquid agglomerates of coal and naptha, sulphur and air and sulphur and benzene are described. Surface active agents, e.g. detergent, may be added together with the agglomerating liquid to control the strength of the bonds between the agglomerated particles.
Patent GB-801644-A (GB)
Title: Improvements in or relating to relay devices employing transistors
IPC: H03F3/04
Filed: 1956-09-20
Abstract: 801,644. Transistor relay circuits. TELEFONAKTIEBOLAGET L. M. ERICSSON. Sept. 20, 1956 [Sept. 20, 1955], No. 28849/56. Class 40 (6). In a circuit in which one winding 8 of a relay is arranged in the output circuit of a transistor 6, a second winding 9 is connected in a feedback circuit between the input terminals 4, 5 and the input of the transistor 6. A rectifying circuit including the diode 13 is arranged in series with the second winding so as to be non-conducting for input signals but conducting for currents supplied by the second winding to the baseemitter path of the transistor 6. The winding 8 is preferably arranged near the armature of the relay, Fig. 3 (not shown) with the coil 9 at the remote end. With this arrangement due to the virtual short-circuit across coil 9 the flux from winding 8 does not pass through coil 9 but is established slowly so that feedback continues to exist even after the maximum current and flux have been built up in winding 8. By this means the time for operation of the relay contacts is increased. In a modification, Fig. 2 (not shown) the connection from the signal source 14 is disconnected from terminal 5 and applied to the base of the transistor. A holding contact may be arranged between the collector of the transistor and the positive terminal of the battery 12.
Patent GB-1391364-A (GB)
Title: Repeater fault localisation system
IPC: H04B17/40
Filed: 1972-06-21
Abstract: 1391364 Testing unattended repeaters TELECOMMUNICATIONS RADIOELECTRIQUES ET TELEPHONIQUES 21 June 1972 [24 June 1971] 29033/72 Heading H4R In an arrangement for testing the repeaters of a transmission system by looping back between the go and return paths successively at each repeater station along the system, the looping back is effected in response to a supply polarity reversal and each repeater station contains a memory circuit which allows the repeater station to respond to the first polarity reversal and effect looping back, but to ignore subsequent reversals to allow successive stations along the line to respond. As described in respect to Fig. 1, which is for a system where repeater power is derived, via a bridge rectifier circuit 28, from across the phantom formed by the go and return circuits, a polarity reversal by operation of switch 25 at terminal station 1 causes, via diode 32, the conduction of transistor 31 and operation of relay 22 in repeater 5. Operation of relay 22 causes looping back of the go and return paths at contacts 23, breaking of the incoming return path at contacts 39, 40, and charging of capacitor 36 at contacts 38. Subsequent restoration of normal supply polarity releases relay 22 causing capacitor 36 to fire thyristor 35. A subsequent reversal of polarity has no effect on transistor 31, since thyristor 35 remains conductive until there is a substantial supply interruption, and so the polarity reversal is allowed to pass to the next repeater, to effect looping back there. After all the repeaters have been tested by looping back in turn, further polarity reversals may be used to effect testing of subscribers lines connected from the terminal station 2. An alternative arrangement, Fig. 2 (not shown), is described for a system where repeater power is derived from across oppositely poled Zener diodes in series in the supply lines.
Patent GB-908631-A (GB)
Title: Improvements in or relating to the polymerisation of openchain conjugated diolefines
IPC: C08F36/04
Filed: 1961-08-11
Abstract: Polymers of open-chain conjugated diolefines which contain not more than 10 carbon atoms are made by polymerizing the diolefine in an inert medium at a temperature of from -5 DEG C. to +90 DEG C. in the presence of a catalyst obtained by reacting (1) an alloy of lithium and an alkaline earth metal and/or a metal of Group III of the Mendel<\>aeef Periodic System with (2) a compound of an element which belongs to Group IVa, Va, VIa, and VIII of the Periodic System.  The catalyst is used in such an amount that from 0,001 to 1,0 parts by weight of lithium are present per 100 parts by weight of the conjugated diolefine.  The reaction of (1) and (2) may be effected in the presence of a halohydrocarbon, or an olefinically unsaturated monomer, e.g. vinyl cyclohexene, employed in an amount of from 0,5 to 50 parts by weight per part by weight of lithium alloy.  Component (1) of the catalyst may be an alloy of Li/Ca, Li/Mg, Li/Be, Li/Al, Li/Mg/Ca, or Li/Ca/Al, in which Li is present in an amount of 20 to 70% by weight. Component (2) may be TiCl3, ZrOCl2, TiCl4, TiI4, CrO2Cl2, VOCl3, ZrCl4, CrCl3, a halide of molybdenum or tungsten, MnCl3, FeCl3, CoCl2, Co(NO)2Cl, CoBr2, NiCl2, Ni-dicyclopentadienyl, and mixtures such as TiCl4/TiI4.  Component (2) may be used as complexes with nitrogen, phosphorus, or arsenic compounds, or beta-diketones.  The halohydrocarbon may be ethyl or propyl bromide, butyl chloride, amyl bromide or iodide, stearylchloride, vinyl chloride, allylchloride, 1,4-dibromobutane, cyclohexylchloride, benzal bromide, benzal chloride, bromobenzene, chlorobenzene, 1,4-dibromobenzene, or 1-bromonaphthalene.  The inert medium is preferably a hydrocarbon.  Dienes mentioned are butadiene, 2-methylbutadiene, 2,3-dimethylbutadiene, 2-ethyl butadiene, 2-phenylbutadiene, and 2-chlorobutadiene.  The dienes may be copolymerized with each other, or mono-olefinic compounds such as styrene, acrylic acid, methacrylic acid, allyl esters, acrylonitrile, ethylene, propylene, butylene, or with multi-olefinic compounds such as divinyl benzene, trivinyl benzene, or triallylcyanurate.  The polymers may be recovered by conventional techniques preferably in the presence of a stabilizer or antioxidant.  The monomers may be purified just prior to polymerizing.
Patent GB-144555-A (GB)
Title: Improvements in connection with automatic syphonic flushing apparatus
IPC: E03F5/04
Filed: 1919-11-22
Abstract: 144,555. Lawson, F. H. Nov. 22, 1919. Siphon-discharge water-waste preventers, automatic.-A tank B pivoted at N on the side of the main tank T is fed by overflow from the main tank. When it tips it starts a flushing-siphon S either by raising a part of the siphon such as the sleeve H at the top of the long leg or a bell.
Patent GB-626496-A (GB)
Title: Improvements in and relating to electric warp stop motions for looms
IPC: D03D51/28
Filed: 1946-10-01
Abstract: 626,496. Electrical warp stop-motion for looms. TRIGGS, W. W. (Crompton & Knowles Loom Works). Oct. 1, 1946, No. 29201. Drawings to Specification. [Class 142 (i)] Drop wires form part of a low voltage circuit which minimises the risk of fire if there is an accumulation of lint on the contact bar. When a warp thread breaks a drop wire falls and causes the discharge of a condenser which normally is charged.' A current then flows through an electronic tube, operating a relay. The relay lights a warning lamp and lifts a pivoted link thereby completing a knock-off mechanism operated by a cam on the bottom shaft. This mechanism moves the shipper handle to stop the loom and also operates a switch which breaks the circuit operating the pivoted link.
Patent GB-1532842-A (GB)
Title: Yarn tensioning devices
IPC: B65H59/22
Filed: 1977-10-14
Abstract: 1532842 Yarn tensioners ALAN SHELTON Ltd 14 Oct 1977 [14 July 1976] 29218/76 Headings D1E and D1M A yarn tensioner comprises a fixed plate 2 with a guide aperture 14 cooperating with a disc 10 which is raised by the yarn upon excessive tension.
Patent GB-325191-A (GB)
Title: Improvements in electric battery charging systems
IPC: H02J7/22
Filed: 1928-10-11
Abstract: 325,191. Midgley, A. H. Oct. 11, 1928. Charging batteries; regulation, automatic.-In a system employing a constant current variable speed dynamo c with a constant voltage regulator e and an electromagnetic switch which renders the regulator operative at a given dynamo voltage the switch is arranged to operate also when the load is imposed. In addition to the voltage coil n the switch may, for example, have a. coil m in series with the load and capable alone of operating the switch k, or the load switch may short-circuit a resistance in circuit with the shunt coil of the switch. The battery may thus be prevented from taking charging current, or allowed to take but a small current, whilst the load is on.
Patent GB-1078234-A (GB)
Title: Polyarylene polyethers
IPC: C08G75/23
Filed: 1964-07-15
Abstract: The invention comprises polyarylene polyethers containing recurring units of formula -(-O-E-O-E1-)-where E is the dehydroxylated residuum of a dihydric phenol and E1 is the residuum of a benzenoid compound having an inert electron withdrawing group in at least one of the positions ortho or para to the valence bonds, and where both of the residua are valently bonded to the ether oxygen atoms through aromatic carbon atoms. The polymers are prepared by reacting an alkali metal double salt of a dihydric phenol with a dihalobenzenoid compound having an inert electron withdrawing group in at least one of the positions ortho or para to the halogen atoms, under anhydrous conditions and in an inert, highly polar organic solvent.  In examples polymers are prepared by reacting salts of 2,2-bis(4-hydroxy-phenyl)propane, 1,1-bis(4 - hydroxyphenyl) - 1 - phenyl ethane, 4,41-dihydroxydiphenyl - methane, hydroquinone, 1,3 - bis(p - hydroxyphenyl) - 1 - ethylcyclo-hexane, 1,1 - bis(4 - hydroxyphenyl) - 2,2 - dimethylethane, 4,41 - dihydroxybenzophenone, 4,41 - (dihydroxyphenyl)diphenylmethane, a  - pinene bisphenol, 4,41-dihydroxy-diphenyl-sulphone, 4,41-dihydroxydiphenyl ether, and 2,21-bis(hydroxyphenyl) - 1,1,1,3,3,3 - hexafluoropropane, with 4,41 - dichlorodiphenylsulphone, 4,41 - difluorobenzophenone, 2,4 - dichloronitrobenzene, and 4,41-difluorodiphenylsulphone.
Patent GB-780987-A (GB)
Title: Improvements in or relating to a load carrying assembly for attachment to a tractor
Inventor: CHAMBERS JOHN MALET
IPC: B66F9/065
Filed: 1954-10-13
Abstract: 780,987. Load handling attachments for tractors. MASSEY - HARRIS - FERGUSON (MANUFACTURING), Ltd. Oct. 5, 1955 [Oct. 13, 1954], No. 29436/54. Class 78 (3). A load handling attachment for a tractor comprises a frame pivoted to the hitch links 1 at 7 and to the hitch link 2 at 5, a load carrier extending sidewise beyond the wheels T and pivoted to the frame at 21, and a manually releasable catch 22 which normally retains the carrier in the full line position but which, when released, allows the carrier to tip about pivot 21 to the discharge position shown in dotted line. The frame consists of a tube 3, of a length less than the distance between links 1, welded to pairs of arms 4, 6, 6a which carry pivots 5, 7, 21. The carrier is constructed as an L-shaped platform provided with detachable sides which, when in place, convert it into a box. In a modification (not shown) the carrier comprises a buck rake or other tipping load carrying device.
Patent GB-710019-A (GB)
Title: Electrical heating and mounting of axial flow compressor blades
Inventor: RAINBOW HORACE SINCLAIR
IPC: F02C7/047
Filed: 1951-12-17
Abstract: 710,019. Compressor blades. ARMSTRONG SIDDELEY MOTORS, Ltd. Oct. 23. 1952 [Dec. 17, 1951] No. 29446/51. Class 110(3). [Also in Group XI]  An inlet guide blade 11 for an axial flow compressor is hollow and has an internal electric resistance heater insulated therefrom, said body being filled with an insulating fluid, e.g., transformer oil, with good heat transmitting properties, so as to prevent formation of ice on the body. The heater is a wire or a metal foil of tortuous shape and is supported from the interior of the body by insulators. In Fig. 1 the ends of a straight resistance wire 21 extend into tubular connectors 20 separated by insulators 22 with flanges 26 supported on tubular extensions 14, 15 of end plates 12, 13 closing the ends of the guide blade. The extension 14 is of square cross section co-acting with a square recess in a supporting ring to locate the blade in correct angular position and to allow movement of the blade on expansion. The extension 15 is of circular cross section and has flanges 17 locating the blade radially in a ring which is of two adjacent parts with a line of division extending axially through all the holes. The insulators and connectors seal the fluid within the blade. In Fig. 2 the heater 21 a is of tortuous shape with its ends attached to connectors 20a extending through insulators 42 in a rectangular extension 14a of the blade end plate 12a and secured to terminals 28. The extension 14a is a sliding fit in a rectangular hole in the ring 39 and. a clearance 41 allows for radial expansion. Insulating resin 44 closes the extension 14a of the blade. The heater 21a is supported by an insulator 47 with legs 48 resting on an adjacent end plate 13a of the blade, which, is apertured at 35 for filling with oil and is subsequently sealed by a soft plug 36 held by a hard plug 37 secured by peening over it metal 38 of the extension 15a of the end plate. The extension 15a has flanges 17a, 18a providing radial location in a supporting ring comprising two parts 30, 31 secured together by studs and nuts 32. Rectangular insulating strips 51 with raised portions at intervals engaging the inner walls of the blade and with side slit supports 54 engaging the strip heater 21a  are placed in the blade.
Patent GB-507285-A (GB)
Title: Improvements in and relating to service hatches, wall cupboards, and other built-in furniture
IPC: A47B81/06
Filed: 1938-10-11
Abstract: 507,285. Built-in furniture. CAMPLING, G., and RADIO FURNITURE & FITTINGS, Ltd. Oct. 11, 1938, No. 29449. [Class 20 (iii)] [Also in Group XIV] Service hatches, wireless 'receivers, refrigerators, sets of drawers, and other domestic appliances are in the form of rectangular units which are removably mounted within one or more rectangular compartments of a frame 2, Fig. 1, which is built into a wall 1 and which projects into the rooms on both sides of the wall. The frame shown is divided into three compartments by partitions 3, and each compartment is adapted to receive a unit 9 which may be fitted with drawers' 10a, or other equipment. Each unit may be divided by partitions into a number of rectangular compartments employed for different purposes. Sockets 8 may be fitted to the frame 2 for power supply and for the aerial when the frame is fitted with a wireless or television receiver. As shown in Fig. 6, a wireless set 30 is mounted within a unit 9 in such manner that it can be used in either room, by arranging it to pivot about a pin 31 carried by a slidable. platform 22. The platform is fitted with side plates which slide between rollers of slides 16 which are mounted to slide within guides 45 fitted to the inner walls of the unit 9.
Patent GB-892634-A (GB)
Title: Improvements in or relating to phosphor materials
IPC: C09K11/76
Filed: 1958-09-15
Abstract: 892,634. Luminescent materials; discharge lamps. WESTINGHOUSE ELECTRIC CORPORATION. Sept. 15, 1958 [Sept. 18, 1957], No. 29454/58. Drawings to Specification. Class 39(1) Method of preparing a halophosphate phosphor material for use in fluorescent lamps comprises removing from a finely divided halophosphate phosphor material, containing particles having particle diameters ranging from less than 4 microns to more than 11 microns, substantially all particles having a particle diameter of less than 4 microns and more than 11 microns. A specific example is characterized by suspending a finely divided halophosphate phosphor material having an average particle diameter of about 7 microns in a liquid vehicle, e.g. water, which includes a phosphor particle dispersing medium, e.g. ammonium, sodium or potassium hydroxide, methyl, dimethyl or trimethyl amine, allowing substantially all the suspended phosphor particles having a particle diameter of 4 microns and greater to settle in the liquid vehicle, separating the settled phosphor particles from the liquid vehicle and the unsettled phosphor particles remaining therein and resuspending the settled phosphor particles in a liquid vehicle which includes a phosphor particle dispersing medium, allowing substantially all of the resuspended phosphor particles having a particle diameter of greater than 11 microns to settle in the liquid vehicle, and separating the settled phosphor particles from the liquid vehicle and the unsettled phosphor particles remaining therein. In another example butyl acetate can be used as the liquid vehicle and nitrocellulose as the phosphor dispersing medium. The first settling step can be repeated before proceeding to the second settling step. The separate phosphor particles having particle diameters of from 4 to 11 microns are mixed with butyl acetate containing 2% by weight of nitrocellulose and flushed over the inside of a lamp envelope which is then heated to about 650‹C. to volatilize the binder. Methods of preparing manganese and antimony activated calcium strontium fluorochloro-phosphate, and antimony activated calcium fluoro-phosphate, are described. These can be mixed together with manganese and lead activated calcium silicate before application to the lamp envelope. Halophosphate phosphors as described in Specification 578,192 can also be used. Results of brightness tests on discharge lamps using halophosphate phosphors of different particle sizes are stated. The discharge lamp can have an envelope of sodalime-silica glass and coiled-coil or triple-coil tungsten electrodes filled with alkaline-earth oxides mixed with zirconia, e.g. a mixture of 60% by weight barium oxide, 30% calcium oxide and 10 % strontium oxide, together with 0.9% of zirconia. The filling can be argon or other inert gas at a pressure of about 4 mms and mercury.
Patent GB-923899-A (GB)
Title: Tear tapes and method therefor
IPC: B65D75/68
Filed: 1959-08-28
Abstract: 923,899. Tear tapes; laminates and laminating. UNION CARBIDE CORPORATION. Aug. 28, 1959 [April 13, 1958], No. 29507/59. Class 140. A tear tape, for a polyethylene film-wrapping material having a density of from 0.91 to 0.96, comprises a backing material having an extensibility of at least 10% lower than the polyethylene film, and a synthetic thermoplastic resinous coating having a softening point below that of the backing material, the coating being heat-bondable at temperatures within the range 330 to 450 F. (166 to 232 C.) and serving to bond the backing material to the external surface of the polyethylene film. Suitable backing materials are " Cellophane " (Registered Trade Mark), polyethylene terephthalate and polycarbonate films. Coatings specified are of copolymers and homopolymers of olefins, especially of ethylene. A method of applying a tear tape to a polyethylene film 26 comprises drawing from a supply roll (3 rolls 10a, 10b and 10c shown) a tear tape 12 fabricated from a backing material possessing lower extensibility than the polythylene film having a synthetic thermoplastic resinous coating heat bondable to the polyethylene film and having a softening point below that of the backing material, passing the tape to a heating zone, softening the coating, and contacting the softened coating with the polyethylene film to form a laminate 30. The coating may be heated, e.g. over a heated bed 18, to a temperature between 330 and 450 F. immediately prior to contact with the polyethylene film.