baber/WOPTO huggingface dataset:
Patent GB-1136718-A (GB)
Title: Polymerizing organosilicon compounds
IPC: C08G77/50
Filed: 1966-05-12
Abstract: 1,136,718. Organosilicon polymers. DOW CORNING CORP. 12 May, 1966 [12 May, 1965], No. 21183/66. Heading C3T. Organosilicon polymers are made by contacting (a) at least one organosilicon compound having an average of at least 1 Si-bonded OH group per molecule, each Si atom present being bonded to an average of 1 to 3 radicals which are phenyl, methyl, alkylene of 1 to 3 C atoms or phenylene radicals, any remaining valencies of the Si atoms being satisfied by oxygen in the form of siloxane linkages, and at least 1% by wt. of (a) of (b) liquid dimethyl sulphoxide, the contacting being effected in the presence of (c) an alkali polymerization catalyst having a pH of at least 12 when measured in an aqueous solution of a concentration not greater than 0À1 N. Catalysts (c) specified are quaternary ammonium and alkali metal silanolates, siloxanolates, hydrocarbonoxides and hydroxides, and alkali metal hydrides, phosphates and silicates. In typical Examples (1) a hydroxylated dimethyl polysiloxane, and (8) 1,4-bis-(dimethylhydroxysilyl)-benzene, were polymerized by contacting them with dimethyl sulphoxide and potassium phenoxide.
Patent GB-1425466-A (GB)
Title: Web cutting apparatus
IPC: B26F3/00
Filed: 1972-05-05
Abstract: 1425466 Cutting apparatus MASSON SCOTT THRISSELL ENG Ltd 7 May 1973 [5 May 1972] 21185/72 Heading B4B Apparatus for making repeated cuts transversely of a moving web of material such as paper, comprises an air nozzle 6 arranged to direct a blast of air across the path of a moving web and substantially normal to a surface of the web and including means 5 for supplying air intermittently at regular intervals in synchronism with the movement of the web so as to make transverse cuts in the web at regularly spaced positions therealong. As shown in Fig. 1, the air nozzle 6 is formed in a valve housing 4 having a rotatable member 5 provided with a slot 7. A knife member 3 is located below the web and is formed of two parts 9, 10 each having cutting edges 12, 13. In operation, pressurized air is fed to the interior of the member 5 and when the slots 6, 7 are in alignment a jet of air acts on the web to press the latter against the cutting edge 12 to sever the web; if the direction of travel D of the web is reversed, the cutting edge 13 severs the web. In a modification, the edge 13 may be rounded off Fig. 2 (not shown). In the modification shown in Fig. 3, the knife member is in the form of a single blade 19 having a sharpened edge for co-operation with the air jets; the blade may be secured by quickrelease fastenings. A hood 23 surrounds the air jet housing 15 and is connected to a source of vacuum for removing paper dust. In a further modification, the nozzle (30) Fig. 4 (not shown) may be opened and closed by a valve member (25) actuated by an eccentric (32) which is rotated by a drive means (33).
Patent GB-1009514-A (GB)
Title: Valve means for use with a liquid container
Inventor: DOWNIE GEORGE
IPC: B67D1/08
Filed: 1963-05-28
Abstract: 1,009,514. Pipe connections for containers. GASKELL & CHAMBERS Ltd. May 26, 1964 [May 28, 1963], No. 21220/63. Heading F2G. Valve means for use in a liquid container comprises a liquid inlet/outlet tube, 10 supported within a tube 11, which is mounted in the mouth of the container, and a closure member 14 mounted for sliding movement between the tubes and resiliently biased by a spring 17 to a closed position in which the outer periphery thereof engages a seat 11a formed by the tube 11 and in which the member closes at least one port 19 in the tube 10. The member 14 is movable to an open position wherein the outer periphery is disengaged from the seat 11a and the inner periphery thereof sealingly engages the tube 10 at a position spaced from the port 19. As shown, the tube 10 has an annular projection 15 for a sealing member 16 carried by the member 14; the latter may be moved to the open position thereof by a coupler as described in Specification 930,015, or the coupler may be retained by a captive nut which coacts with a quick-pitch screw-thread, or U-shaped handles pivotally connected to the container may be employed. The tubes 10, 11 may be of synthetic resin material, and the tube 11 is provided with holes 12, or slots.
Patent GB-714149-A (GB)
Title: Improvements in or relating to moulds for forming soles and heels of rubber footwear
IPC: B29D35/12
Filed: 1950-08-28
Abstract: 714,149. Moulding rubber soles and heels HARVEY. A. P. Nov. 22, 1951 [Aug. 28, 1950], No. 21255/50. Class 87 (2) [Also in Group VII] A reinforcement 14 of tough material, such as steel sheet, is embedded in a rubber sole 16 to overlap the junction of sole and heel. The reinforcement 14 may be in the form of a flanged plate, Fig. 2, with or without the edges of the flanges 17 inturned, or with perforations, 18, which may have pronged projections at the' edges 19 through 'which the rubber may flow, or it may take the form of chain mail. The reinforcements 14 need not extend to the edges of the soles and heels and, in the case of repair they may be laid in position one on each of the soles of a pair of shoes held in a mould and prepared by removing the old soles and part of the heel over which a layer of rubber solution followed by a layer of unvulcanised rubber mixture may be applied. One end of the reinforcing plate 14 may be inserted in a slot cut in the heel parallel to the sole preparatory to repair. The main mass of unvulcanised rubber is then placed in position on the sole and heel and the footwear is placed in a mould in which the finished shape is imparted and the rubber is vulcanised. Figs. 4, 5 show a mould for forming soles and heels of various sizes, within limits. It comprises a base plate 20 shaped to the undersurface of the sole and heel, Fig. 5, with a number of flexible strips 45, 46 which may be shaped to the desired contour, at least of the sole, by adjustable abutments 24 between upstanding portions 20, 22, 41 of the base plate 20 and the flexible strips. The ends of these strips may engage parts of removable heel blocks 39 the side walls of a cavity in each of which define the shape of the heels. The strips in toe blocks 31 overlap the ends of the strips 45, 46 and are adjustable for size of shoe. Ridges and/or recesses 35 may be provided on the base plate 20, and 40 in the heel block, to provide a pattern on the tread surface of the footwear. A member 47 clamped by a bolt 48 to an extension 37 of the base plate 14 resists rearward displacement of the boots under pressure of moulding. The sole may be vulcanised by placing the mould on a heated plate.
Patent GB-893027-A (GB)
Title: A loop taker drive for chain-stitch sewing machines
IPC: D05B57/02
Filed: 1959-06-22
Abstract: 893,027. Sewing-machines. DURKOPPWERKE A.G. June 22, 1959 [July 2, 1958], No. 21259/59. Class 112 The looper drive of a chain stitch sewing machine comprises a sleeve 14 mounted on roller bearings on an oblique crank 12, the sleeve having trunnions 17, 18 which enter respectively into bores in a gimbal frame 19 surrounding the sleeve. The gimbal frame 19 has a short journal 20 at one side engaging a bush 23 in the casing 1 and a long journal 22 projecting through a bearing 25 in the casing, a looper carrier 21 being mounted at the end of the journal 22. As the drive shaft 3 rotates the crank 12 the journals 20, 22 oscillate and slide to give an elliptical motion to the looper 39 mounted on the carrier 21. To permit adjustment to the looper position and path the bush 2 through which the shaft 3 extends is adjustably clamped in both an extension 7 of the bedplate and in the casing 1. In another embodiment, (see Fig. 8), the sleeve is in the form of a cylindrical sleeve 42 slidably mounted and axially guided in a cylindrical member 44, the looper carrier 21 being mounted on a long journal 46 on the link. Lubricating reservoirs &c. The casing 1 is rendered oil tight by packing 26, 29, 31 and 38 and an oil level inspection glass 35 is provided. A filling screw 36 and a drain screw 37 are also provided.
Patent GB-812145-A (GB)
Title: Coated metal ligatures for tying packages and the like, and methods of manufacturing them
IPC: C23G5/00
Filed: 1955-07-22
Abstract: Compositions for application molten to metal ligatures, e.g steel strapping and iron or steel wire, comprise a mixture of nylon and a softening agent selected from the abietic acid derivatives, long chain aliphatic amines having 12-16 carbon atoms, and the alkyl aryl sulphonamides.  Preferably the nylon has a melting point range of 160-250 DEG  C. and is prepared from a diamine having 4-8 carbon atoms and a dicarboxylic acid having 5-10 carbon atoms.  The softening agent may be rosin, e.g. a high melting point residual rosin, a methyl ester of abietic or dehydroabietic acid, a glycerol ester of rosin or hydrogenated rosin, dehydroabietylamine or its acetate or other lower fatty acid salt, myristyl amine, or n-ethyl-para-toluene sulphonamide. More than one softener may be used, e.g. an ester gum derived from high melting residual rosin and dehydroabietylamine-, or the glycerol ester of hydrogenated rosin, n-ethyl-para-toluene sulphonamide, and residual, high-melting rosin. The proportion of nylon to softening agent used is between the limits 99:1 and 67:33.  The mixtures may be prepared by co-melting or compounding the ingredients.
Patent GB-261843-A (GB)
Title: Improvements in or relating to extruding machines
IPC: B29C48/06
Filed: 1925-08-26
Abstract: 261,843. Johnson, E. H. Aug. 26, 1925. Extrusion machines. - In an extruding- machine, plastic material is fed under pressure by a screw 12, Fig. 1, rotating in a cylinder 11 of substantially the same diameter, to a positively acting feeding means which comprises rotating elements 17, 18, Fig. 3, having intermeshing tooth-like projections and a driving connection with the screw, the plastic material being received from the screw longitudinally of the teeth. The members 17, 18 increase the pressure on the material thus forcing it into the extruding die, and rotate in a close fitting chamber 16 having inlets 21, enlargements 22, and outlets 23. The spindles 27 of the members 18 carry driving gears meshing with an intermediate gear 28 the spindle of which has a squared end 31 engaging a squared socket 30 on the end of the screw. The invention is shown as applied to a wire covering machine. A strainer, comprising a perforated cylinder 50 which forms a support for a screen 52 of wire mesh or perforated sheet metal, is placed between the positively acting feeding means and the die 41.
Patent GB-266658-A (GB)
Title: Improvements in or relating to the manufacture of metals and alloys in the electric furnace
IPC: C22B4/08
Filed: 1925-08-27
Abstract: 266,658. Croese, D. Aug. 27, 1925. Electrode and resistance furnaces.-A process for the production of metals or alloys from finely divided ores comprises treating the ore for the removal of impurities, and then causing the treated material to fall by gravity through a furnace divided into a number of chambers in which the material is first preheated and then passes freely through a plurality of arcs under non- oxidizing conditions for the purpose of melting and reduction, further heat treatment being finally applied to separate the metal from the slag. In the case of ironsand the preliminary operation may be effected by passage through a magnetic separator. The ore is fed to the furnace from a hopper 2 by a conveyer 3 through an air tight casing 5. The furnace 1 is lined with firebrick 11 and comprises a preheating chamber 7 and arc chambers 12 fitted with electrodes 12. The furnace 1 is stationary and is seated in a lifting crucible 16. Gates 24, 25 permit isolation of the crucible when tilting. The chamber 7 is heated by waste gases which escape by a pipe 37, but it may be electrically heated. The crucible may be heated by electrodes or resistances or by mixing the waste gases with air and burning the mixture around the crucible. An electromagnet may be arranged on a framework under the crucible to deflect the arcs therein. The waste gases may be led to a cooling and scrubbing apparatus and from thence passed into a storage for subsequent use in the prime mover of an electric generating plant. The chambers in the furnace 1 are separated by graphite members 9 having a conical throat and co-operating with double conical graphite baffles 6 mounted on graphite arms 8 to break up the falling material. An inert gas may be introduced into the furnace through the lowest arc chamber. When metallic oxides are to be treated they are mixed with coke, anthracite, or other reducing agent before introduction to the hopper 2. Alternatively the reducing agent is supplied to the crucible. When treating ironsand the percentage of titanium present in the steel is dependent on the time that the metal is heated in the crucible. Data of a particular furnace applied to the reduction of ironsand are given in the Specification.
Patent GB-1096973-A (GB)
Title: The manufacture of styrene polymers, and the resulting polymers
Inventor: STREET BRIAN FREDERICK
IPC: C08F6/28
Filed: 1966-05-16
Abstract: The residual monomer content and the residual hydrocarbon diluent content (if any) of a styrene polymer is reduced of by a devolatization of the polymer in a heat plastified or molten condition, in the presence of not more than 0.5% of water which is wholly removed together with the monomer (and diluent if any) in the devolatilization.  The polymer may be polystyrene or a high impact polystyrene e.g. produced by the bulk polymerization of styrene monomer or styrene monomer containing dissolve rubber respectively. The diluent may be toluene.  The water, e.g. 0.05-0.2%, may be fed as such or as steam into the last stage of a multi-stage polymerization or into the devolatilizing extruder.
Patent GB-592006-A (GB)
Title: Improvements in and relating to electrical temperature regulating apparatus
IPC: G05D23/275
Filed: 1944-11-03
Abstract: 592,006. Temperature-responsive actuating- elements. DAVIS, N. R., and SUN-VIC CONTROLS, Ltd. Nov. 3,1944. No. 21590. [Class 64 (ii)] [Also in Groups XXXV and XXXVII] In a system (see Group XXXV) for automatically controlling the temperature of an electrically or otherwise heated electrolytic bath or other enclosure the temperature responsive element is an adjustable toluenemercury thermal switch, Fig. 1. A tube 1 containing mercury m and toluene (not shown), and mounted in the enclosure, carries a contact rod 2 secured at its upper end to the centre of a bimetallic strip 3 which is located between supports 5 in a casing attached to the upper end of a tube 10. Tube 10 is a sliding fit in an externally threaded sleeve 11 registered within the top of tube 1 by a rubber brush 12, and is provided with radial pins 13 projecting through slots 13a in sleeve 11. Tube 10 is normally biassed upwardly relative to sleeve 11 by a spring 14 but a nut 17 on the threaded surface of sleeve 11 engages pins 13 and permits adjustment of the position of tube 10 and, hence, the relative position of rod 2 and mercury m for temperature setting. Contact between the rod and mercury, besides controlling the heating of the enclosure, also controls the energisation of a heater 7 for bimetallic strip 3 in such a manner as to cause reciprocation of rod 2. Electrostatic shields between winding 7 and strip 3 are referred to. In Fig. 3, a rectangular bimetallic strip 3a supported at 50, and supporting rod 2 at 2, is employed to avoid the effect of ambient temperature changes.
Patent GB-666529-A (GB)
Title: Improvements in and relating to the production of catalysts
IPC: C07C21/06
Filed: 1949-08-19
Abstract: <PICT:0666529/III/1> In the production of catalysts for, e.g. the synthesis of vinyl chloride, by impregnating a solid material with a liquid containing a substance which is or is readily convertible into a catalytically active material, the impregnation is effected while the solid is maintained as a fluidized "boiling bed."  By varying the temperature and duration of impregnation and the concentration of the catalytically active material within the liquid, the liquid content and degree of impregnation of the product may be controlled.  As shown, a steam-jacketed tube 2 contains a bed of mildly activated charcoal 1 maintained in the fluidized state by an upwardly directed nitrogen stream which is preheated to 150 DEG C and introduced at 3. Aqueous mercuric chloride at or above 60 DEG C is sprayed through distributor 6 into the bed.  Water and nitrogen are withdrawn at 7, charcoal introduced at 8 and finished catalyst withdrawn at 9.  The method is also applicable to the production of the following catalysts; cobalt cyanide on alumina, potassium acetate on silica gel, and nickel or cobalt on charcoal, alumina, silica gel or broken firebrick, and in the latter case the support is impregnated with a soluble salt of the metal followed by ignition to oxide and reduction to metal.
Patent GB-1012557-A (GB)
Title: Electrical connector
IPC: H01R4/22
Filed: 1964-05-26
Abstract: 1,012,557. Sleeve couplings. AMP INC. May 26, 1964 [June 10, 1963], No. 21645/64. Heading H2E. An electrical connector comprises an insulating housing 10, in which is secured a tapered coil spring having interturn spaces, and locking means extending longitudinally of the spring for a short length, so that when the bared ends of a plurality of wires 18 and 20 are threaded into the spring, the looking means prevents relative rotation between the spring and the insulating member on rotation of the wires in one direction until, after a predetermined number of turns, the spring compresses sufficiently to clear the locking means and allow relative rotation of the spring and the housing. This prevents any shearing damage to the conductors or insulating housing. In the first embodiment, Fig. 6, the locking is performed by the end cap 22 which has an inclined camming surface 26 leading from an edge face 31 to an edge 32. The spring has a radial extension 42 which initially rests in a slot 30 formed between edges 31 and 32, and is held in the housing by engagement of the last turn of the coil with an internal shoulder. When the bared ends of the wires 18 and 20 are inserted and the housing 16 is rotated, the wires are drawn together with the spring acting as a screw thread. When the ends of the wires bear against central boss 34, further rotation forces the spring in the opposite direction and the spacing in the coil permits axial compression movement of the spring drawing the extension 42 out of the slot 30. During further rotation of the housing, the spring remains fixed on the wires. At each revolution, the extension 42 snaps into the slot 30 with an audible click indicating to the operator that the connection is complete. In the second embodiment, Fig. 7, the housing rotates the spring through an abutment 68 and the clicks are produced by an inner cam surface 80 of a member 72 which is secured in the end of the housing 50. In a third embodiment, Fig. 8a (not shown), the member 72 carries two cam surfaces so that two audible clicks per revolution of the housing are produced.
Patent GB-1215602-A (GB)
Title: Improvements in and relating to tensile testing
Inventor: BAKER BERNARD STUART
IPC: G01N3/08
Filed: 1967-05-10
Abstract: 1,215,602. Tensile testing machines. COURTAULDS Ltd. May 9, 1968 [May 10, 1967], No. 21688/67. Headings G1N and G1S. A method of carrying out a tensile test on a sample of filamentary material comprises the steps of:- (a) attacking the sample of filamentary material at two positions spaced along its length to the relatively movable upper and lower arms of a tensile testing machine, (b) causing relative movement of the arms towards each other to remove any tension in the sample thus enabling the initial load on the upper arm due to its mass and the mass of the sample to be measured, (c) causing relative movement of the arms away from each other to a position at which the sample is subjected to a predetermined tensile force measured by the load on the upper arm, to enable the initial length of the sample to be measured in terms of the separation of the arms, and (d) causing further relative movement of the arms away from each other to extend the sample until it breaks, at which position the separation of the arms is measured to determine the extension of the sample at breakage and the load on the upper arm is measured to determine the breaking load by subtraction of the initial load. The sample filament is mounted on a tape as described in Specification 1, 215, 601 and clamped between the arms as described in Specification 1, 215, 603. The initial load on a load cell to which the upper arm is attached is measured in terms of the voltage of an electrical signal generated by the load cell. The lower arm is then moved downwards to the point where a predetermined pretensioning load is applied to the sample and this point is determined electrically as described in Specification 1,189,125. Movement of the lower arm prior to pretensioning is accomplished at a progressively increasing speed controlled electrically as described in Specification 1, 199, 149. After pretension, the extension of the sample is continued until breakage occurs, the breakage point being determined electrically as described in Specification 1, 191, 286. Movement of the lower arm is then immediately stopped and the breaking load determined electrically as described in Specification 1, 189, 126. The percentage extension is also determined electrically as described in Specification 1, 189, 127 by means of a potentiometer connected to the lower arm. Apparatus as described in Specification 1, 200, 056 is used to test a number of samples to obtain an average result.
Patent GB-956448-A (GB)
Title: Improvements in or relating to electrodynamic microphones
IPC: H04R1/38
Filed: 1958-07-07
Abstract: 956,448. Microphones. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 21, 1960 [June 24, 1959], No. 21730/60. Heading H4J. In an electrodynamic microphone having a cardioid directional characteristic, a diaphragm is accessible to sound waves at the front and rear, rear access being by way of an acoustic resistance terminated duct which opens directly into the air, and an air chamber having one or more apertures in the microphone housing, all such apertures and a further aperture leading from the air chamber to a further air chamber behind the diaphragm being covered by acoustic resistances, while the ratio between the duct resistance and the total resistance of the housing apertures is such that a desired frequency characteristic and directional characteristic in the low frequency range may be obtained. In the moving coil microphone described, the diaphragm 1 is suspended from the pole plate 7. A duct 2 passes through the centre of the magnet system and terminates in an acoustic resistance 2<SP>1</SP> made for example of gauze. An air chamber 3 is in communication with the air chamber behind the diaphragm via holes 3<SP>1</SP> covered by gauges, and with the outside air via a hole or holes 4 covered by gauzes 4<SP>1</SP>. Various mathematical expressions are derived with the aid of electrical equivalent diagrams, for the conditions governing the directional and frequency characteristics. In general if a lower response is required, e.g. for speech purposes, the resistance terminating the duct is increased and in order to preserve the directional characteristic, the now excessive compliance of air chamber 3 is corrected for, by a decrease in the resistance 4<SP>1</SP> governing the aperture 4. Figs. 5a and 5b show one method of adjusting the response for different purposes with the microphone shown in the " speech position." Switch, 10, deforms U-spring 12 so that the ends of the limbs of the spring, which carry foamed rubber pads 13, are disengaged from gauges 4<SP>1</SP> while a strip of gauze 14 is stretched so as to cover the gauze 2<SP>1</SP> terminating the duct. Further apertures 4 may be provided which are also covered by gauzes, e.g. 4<SP>11</SP>, and which are unaffected by the switch. Various embodiments are described whereby the apertures and ducts may be covered or uncovered by suitable switching means.