baber/WOPTO huggingface dataset:
Patent GB-995797-A (GB)
Title: Process for the polymerization and copolymerization of alpha-mono-olefins
IPC: C08F10/00
Filed: 1962-05-02
Abstract: An alpha-mono-olefine or mixture thereof is polymerized in the presence of a catalyst comprising (1) a salt of a transition metal of Group IVb, Vb, VIb or VIII of Deming's Periodic System or of manganese, wherein the metal has an even valency or a valency lower than its maximum possible, and (2) an aluminium hydride, viz. AlHXY, where X and Y are H, a halogen, or <FORM:0995797/C3/1> where R1 and R11 are alkyl, aryl, alkaryl or cyclo-alkyl, or R1 and R11 form together with the N a heterocyclic ring.  The aluminium hydride may be complexed with an ether, a tert. amine, a dialkyl sulphide or trialkyl phosphine to form a Lewis base. The metal salt may be a halide of titanium or vanadium.  The olefine may be ethylene, propylene and/or n-butene. Polymerization may be carried out at -20 DEG  to +125 DEG  C. at up to 50 atm. pressure in an aromatic hydrocarbon as solvent. The molar ratio of aluminium compound (e.g. AlH3.N (CH3)3, a complexed aluminium mono- or dihalo-hydride a non-complexed dialkyl amino aluminium hydride, a complexed di-aryl amino aluminium hydride, a halo-amino-aluminium hydride or a substituted aluminium hydride wherein the aluminium atom is directly bonded to the nitrogen atom of a piperidine ring) to the salt of the transition metal (e.g. an oxy-halide of vanadium, an ester salt of vanadic or mono- or di-chloro-vanadic acids, or the acetyl acetonate of trivalent vanadium or of vanadyl) may be 0.25-10. The catalyst components may be introduced separately, in solution or in the solid state, into the reactants or may be reacted with one another at -20 DEG  to +125 DEG  C. prior to being introduced into the polymerization system. Highly crystalline polymers or amorphous copolymers may be produced.
Patent GB-110640-A (GB)
Title: Improvements in or relating to Telephone Instruments.
IPC: H04M1/03
Filed: 1916-11-24
Abstract: 110,640. International Electric Co., and Roose, H. E. R. Nov. 24, 1916. Telephones, mounting and supporting.- A transmitter B is permanently attached to a flattened tube C which may contain a push switch C<6>, C<7>; while the receiver A is adapted to be removably attached to the tube C by means of a spring member A<1> provided with projections A<2> which engage holes in the tube C. The transmitter B may be removably attached to the tube C. Specification 14233/15 is referred to.
Patent GB-658832-A (GB)
Title: Method and apparatus for the production of resin treated filter materials
Inventor: STOKES EDWARD ARTHUR
IPC: B01D39/14
Filed: 1948-06-23
Abstract: 658,832. Gas filters. VOKES, Ltd. June 23, 1948, No. 16933. [Class 8(ii)] [Also in Group I] In the manufacture of filter material for use in electrically non-conducting fluids, e.g. air, and comprising webs of laps, felts or woven materials impregnated with electrified particles, the particles are introduced into the interstices of the web of finished material by a particle saturated stream of gas passing through the web; the particles held thereby being activated to hold an electrical charge by mechanical action of the impregnated web. A suitable filter material impregnating and activating apparatus comprises mangle and extension rollers 3, 4, for passing a web 1 between perforated screens 7, 7 and hoods 8, 8 of an air duct 9, into which is, fed, powdered resin of high specific volume resistivity, e.g. rosin modified tertiary butylphenolformaldehyde from a hopper 11. The impreghated web is beaten by a mechanical vibrator 18 and any resin removed thereby is drawn away through a suction hood 19. Specifications 573,951 and 637,798 are referred to.
Patent GB-1020360-A (GB)
Title: Method for manufacturing coils
IPC: H01L39/00
Filed: 1964-04-23
Abstract: A coil of superconducting material e.g. NbZr or Nb3Sn is formed on a cylindrical ceramic frame 1 with intermediate insulating strips of e.g. silicon by feeding a mixture of niobium and tin chlorides in a vapour state through a nozzle 2 and silicon tetrachloride through a <PICT:1020360/C6-C7/1> nozzle 3, whilst rotating the frame and moving it longitudinally. Alternatively the nozzles may be moved longitudinally.
Patent GB-186159-A (GB)
Title: Improvements in apparatus for indicating the rate of turn of aircraft
IPC: G01C19/28
Filed: 1921-06-21
Abstract: 186,159. Vickers, Ltd., and Gray, P. W. June 21, 1921. Gyroscopic apparatus. -In a gyroscopic instrument for indicating the rate of turn of aircraft, the gyroscope controls a number of illuminating - devices which show lights, preferably of different colours, according to the direction and rate of turn, the devices being lit by one or more lamps which remain continuously alight and are independent of the gyroscope. In the form shown, the gyroscope A is mounted so as to process in response to turning motion of the aircraft and the precession axis carries an arm a having a pin a<1> entering a slot in an arm b<2> forming part of a shutter B which can turn about the axis x-x. The shutter has an aperture comprising two parts b, Fig. 3, of different radii and a wide central portion b<1>, and rotates within a cylindrical casing C provided with windows c, c<1>, Fig. 2, adapted to be illuminated from the lamp D by way of the apertures b, apertures f in a fixed screen F, and the reflectors E. The reflectors shown in full lines in Fig. 1 illuminate the windows c and those shown in dotted lines illuminate the windows c<1>. When the arm a is in its central position the wide aperture b<1> allows light to pass to the two central windows, while when the gyroscope precesses the shutter is rotated so as to allow light to pass through one part of the aperture b to one or more of the windows c or c<1>, the number of windows illuminated depending on the magnitude of the precession and therefore on the rate of turn of the aircraft. The, two sets of windows are preferably of different colours. The pin-and-slot connection provides a transmission, the ratio of which diminishes as the movement of the arm a increase. The pointer G of an airspeed indicator may be mounted on the casing C. In a modification the shutter B is secured directly to the precession axis of the gyroscope and the screen F has a number of narrow slots arranged in two staggered rows adjacent the reflectors, the distance apart of the slits increasing outwards from the centre so as to increase the scale of the indication for small precessional movements.. Specification 164,396 is referred to.
Patent GB-313002-A (GB)
Title: Improvements in screwing machines
IPC: B23G7/00
Filed: 1928-02-06
Abstract: 313,002. Landis Machine Co., (Assignees of Mathias, S. W ). Nov. 28, 1927, [Convention date]. Divided on 301,371. Screwing.-Spring means are provided to facilitate starting the thread on a. screwing- machine. The invention is described with particular reference to the machine for pointing and threading articles such as bolts and screws described in Specification 301,371. A self-opening die-head is carried by a spindle 14, mounted in a slide 28 adjustably counterbalanced to vary the pressure on the threading-dies, the ways of the slide being vertical or substantially so. Feed is controlled by a cam 38 on the shaft 58, and a roller 37<1> carried by the slide. The starting- spring 47 is confined between the end of a. tube 46<1>, housing the spring 46 and slidable on the slide 28, and lock nuts 48<1>, on a rod 48, acting in conjunction with lock nuts 48<3> engaging an adjustably screwed bush 46<3> carried by the frame and acting also as abutments for the spring 46. On the return stroke of the slide the rod 48 engages an abutment 49 to compress the springs. When the feed stroke commences the cam tends. to leave the roller and the spring 46 feeds the slide forward until a flange 46<2> engages an abut. ment 28<3>, the parts being so set that at this time the die is about to engage the work. The spring 47 then becomes operative and this spring. is so designed that the feeding pressure rapidly falls off as the die comes into action allowing. the dies themselves to take up control.
Patent GB-1023770-A (GB)
Title: Cup-shaped objects of fibrous mass and method of and mould for their production
IPC: D21J7/00
Filed: 1964-04-24
Abstract: 1,023,770. Boxes. SKANDINAVISK EMBALLAGE A.S. April 24, 1964 [April 26, 1963], No. 17123/64. Heading B8P. [Also in Division B5] A number of interconnected boxes, Figs. 1 and 2 (not shown), are produced by accreting on to a perforated or reticulated mould a fibrous mass by suction, the thickness of the layer so formed being reduced along the interconnecting portions 12 of the articles, to allow separation thereof, by providing the mould with imperforate projections 24, Fig. 3 (not shown).
Patent GB-1025112-A (GB)
Title: Improvements in or relating to bodies of vitreous silica and to the treatment thereof
Inventor: BURNS JAMES ALEXANDER
IPC: C03C17/27
Filed: 1962-05-04
Abstract: An article of vitreous silica, e.g. an alkali vapour discharge lamp envelope, has a protective, transparent coating of a metallic oxide which has at least partially diffused into the surface layer of the silica, and has the effect of decreasing the rate at which the silica is discoloured under attack by alkali metal vapour. The coating may be formed by heating the surface of the silica to 500 to 600 DEG C. and exposing it to a metal vapour such as Mg, Ca, Ba, Sr or an alkali metal, for a time sufficient to produce a marked discolouration of the surface, after which the surface is heated to 800 to 1000 DEG C. in an oxidising atmosphere e.g. moist air, to remove the discolouration, and produce an oxide coating which is stable in the presence of alkali metal vapours at elevated temperatures.  In particular, a magnesium ribbon supported by a tungsten rod may be inserted in a fused silica tube which is evacuated to a pressure of about 10-4 mm of Hg and heated, magnesium then being evaporated for 15 to 30 minutes to discolour the silica.  After cooling, the tube is reheated to 900 DEG C. and moist air is blown therethrough for 30 minutes. The tube may be used as a sodium vapour discharge lamp envelope, electrodes being mounted in its ends either before or after, the coating process.ALSO:An article of vitreous silica, e.g. an alkali vapour discharge lamp envelope, has a protective, transparent coating of a metallic oxide which has at least partially diffused into the surface layer of the silica, and has the effect of decreasing the rate at which the silica is discoloured under attack by alkali metal vapour. The coating may be formed by heating the surface of the silica to 500 DEG  to 600 DEG  C. and aexposing it to a metal vapour such as Mg, Ca, Ba, Sr or an alkali metal, for a time sufficient to produce a marked discoloration of the surface, after which the surface is heated to 800 DEG  to 1000 DEG  C. in an oxidizing atmosphere, e.g. moist air, to remove the discoloration, and produce an oxide coating which is stable in the presence of alkali metal vapours at elevated temperatures. In particular, a magnesium ribbon supported by a tungsten rod may be inserted in a fused silica tube which is evacuated to a pressure of about 10-4 mm. of Hg and heated, magnesium then being evaporated for 15 to 30 minutes to discolour the silica.  After cooling, the tube is reheated to 900 DEG  C. and moist air is blown therethrough for 30 minutes. The tube may be used as a sodium vapour discharge lamp envelope, electrodes being mounted in its ends either before or after, the coating process.
Patent GB-492998-A (GB)
Title: Improvements in the manufacture and production of vulcanisable mixtures of organic film-forming substances
IPC: C08L21/00
Filed: 1937-06-21
Abstract: Natural or synthetic rubber or other vulcanizable organic film forming substances are admixed with the viscous to solid polymerization products of butadiene or its homologues or halogen butadienes obtained by heating them under pressure in the presence of oxygen.  In examples: (1) the product obtained by heating butadiene in the presence of toluene and butanol to 200 DEG  C. for 2 1/2 hrs. under an air pressure of 80 atmospheres and distilling off volatiles, is mixed with butadiene rubber polymerized in aqueous emulsion, gas carbon, sulphur and an accelerator and vulcanized; (2) a product similar to that of example (1) is mixed with an interpolymerization product of butadiene and acrylic nitrile, stearic acid, gas carbon, zinc oxide, and vulcanizing ingredients and vulcanized; (3) the product obtained by heating butadiene in the presence of iron chloride is mixed with the emulsion polymerization product of a mixture of butadiene and styrene and other ingredients and vulcanized: (4) the product obtained as in example (2) is mixed with natural rubber and other ingredients and vulcanized.ALSO:Natural or synthetic rubber or other vulcanizable organic film - forming substances are admixed with the viscous to solid polymerization products of butadiene or its homologues or halogen butadienes obtained by heating them under pressure in the presence of oxygen. In examples: (1) the product obtained by heating butadiene in the presence of toluene and butanol to 200 DEG  C. for 2 1/2 hrs. under an air pressure of 80 atmospheres and distilling off volatiles, is mixed with butadiene rubber polymerized in aqueous emulsion, gas carbon, sulphur and an accelerator and vulcanized; (2) a product similar to that of example (1) is mixed with an interpolymerization product of butadiene and acrylic nitrile, stearic acid, gas carbon, zinc oxide, and vulcanizing ingredients and vulcanized; (3) the product obtained by heating butadiene in the presence of iron chloride is mixed with the emulsion polymerization product of a mixture of butadiene and styrene and other ingredients and vulcanized; (4) the product obtained as described in example (2) is mixed with natural rubber and other ingredients and vulcanized.
Patent GB-842554-A (GB)
Title: Cutting artificial filaments into short lengths
Inventor: LIDDELL WILLIAM
IPC: D01G1/04
Filed: 1957-05-31
Abstract: 842,554. Stapling fibres. IMPERIAL CHEMICAL INDUSTRIES Ltd. May 9, 1958 [May 31, 1957], No. 17321/57. Class 120(3). In a modification of the apparatus claimed in Specification 682,473, the moving support is a wheel 1, some of the projectors 2 on which are of greater curvature than the wheel 1. The curvatures of some or all of the projections 2 are different in order to produce staple fibres of different lengths.
Patent GB-186412-A (GB)
Title: Improvements in or relating to the method of packing cigarettes or other staff-shaped articles and in means adapted therefor
IPC: A24C5/352
Filed: 1921-06-24
Abstract: 186,412. Ekstr÷m, G. C., Johnson, B. A. E., and Orstr÷m, G. June 24, 1921. Packeting cigarettes &c.-Relates to a method of and means for packing cigarettes &c. bearing printed matter in such a manner that the print is visible, and, in the case of cigarettes of oval cross-section, so that the cigarettes partially cover each other, the print being turned upwards, the cigarettes being positively guided until they have been placed in boxes &c. The cigarettes, cut from a string, arrive at a table 1, Fig. 1, and are fed by an oscillating arm 7 into the pockets 4 of a drum 3. The pockets are formed by strips 5 of sheet metal and extend obliquely. An arm 17 removes the cigarettes into a carrier 8 which is fed downwards by rotating discs 15, 18 with radial pins engaging holes in the edge of the carrier. A piston 20 forces the filled carriers into a box 19. The carrier is formed with oblique pockets 10 for containing a predetermined number of cigarettes, which are in such relative position that they have the proper position when fitted into boxes from the carriers. The cigarettes may be pushed from the carrier directly into boxes &c. In the form shown in Fig. 4, the carrier consists of a steel band 31 with ribs 32, and is unwound from a roller 33 over drums 34, 35 and wound on a. roller 36. An arm 37 feeds cigarettes from the table 1 into the pockets of the carrier, in which they are retained by endless threads 38 passing round rollers 39 - - 43, the last being mounted on a weighted arm. The cigarettes are pushed directly into boxes &c. as the band is being uncoiled. In another form, the delivery end of the tube of a cigarette-making machine is pivoted so that the cigarettes may be fed directly into the drum, the tube following the movement of the drum during introduction.
Patent GB-681935-A (GB)
Title: Grinding apparatus
IPC: B24B27/00
Filed: 1950-07-12
Abstract: 681,935. Grinding-machines. THOMPSON (WOLVERHAMPTON), Ltd., J., and THOMAS, J. R. June 29, 1951 [July 12, 1950], No. 17402/50. Class 60. . A grinding machine, such as is used for dressing welded seams in pressure vessels and other containers 60, comprises a shaft 10, Fig. 1, suspended for universal movement and having a grinding wheel 13 at one end driven by a motor 19 associated with the other end, the motor also producing lateral oscillation of the shaft 10. The shaft 10 is supported in bearings 11 in a tubular housing 12 provided with a platform 21 to which is fixed a shaft 31 connecting the platform to a bracket 29 suspended from a boom 30. Lateral oscillations of the shaft 10 cause the shaft 31, Fig. 4, to rotate about its axis in bearings 35 in a trunnion that can rotate in bearings 34 in the bracket 29 so as to allow movement of the grinding wheel towards the workpiece which may be' fed linearly or be rotated either intermittently or continuously. An air or other pressure-fluid motor 49, Fig. 1, preferably double-acting, connected by a piston rod 53 to a trunnion on the top of the shaft 31, feeds the grinding wheel against the workpiece. As the piston rod 53 moves to pivot the shaft 31 in the bearings 34, the motor 49 is rocked on trunnions 50 supported from the bracket 29. The depth of feed can be gauged and adjusted by the position of one or more stops 61 secured to a beam 63 that is pivoted by arms 65 to the housing 12. Continuations 68 of the upper arms 65 are fixed to a trunnion 69 connected to a screw 70 that can be adjusted in a pivoted nut 74 by a handle 73. In an alternative depth gauge, Fig. 6, the beam 63 has been replaced by a two-part beam 75, 76 carried by the arms 65 and having a recess 78 to receive the housing 12. Work-engaging wheels 81 are carried by a member 79 that pivots at 80 on the part 76 and is adjustable by screws 82. The shaft 10 is driven by belts 17, Fig. 3, from the motor 19 which is supported on a plate 23 pivoted at 25 on lugs 22 carried by the platform 21. The motor may be rocked to tension the belts 17 against Ó jockey pulley 40x by adjusting screws 27 and nuts 28 engaging the lower edge of the plate 23 and secured to one of the brackets 20 connecting the platform 21 to the housing 20. The shaft 10 and motor assembly are oscillated laterally by rotating an eccentric pin 42 carried by a disc 36 in a slot in a stationary arm 44 fixed to, and off-set to one side of, the bracket 29. The arm 44 is fixed to the bracket 29 at points on the axis of the trunnion for the spindle 31 by a yoke 45, and the disc 36 is rotated from a worm and wheel (not shown) driven by a belt 40 from the motor. A guard 14 having a hinged inspection cover 15 is provided for the grinding wheel.
Patent GB-188016-A (GB)
Title: Improvements in the evacuation and sealing of tins and the like metallic containers
IPC: B21D51/26
Filed: 1921-06-25
Abstract: 188,016. Poole, H. J., and Beddington, C. June 25, 1921. Addition to 164,214. Drawings to Specification. Preserving food.-Tins &c. containing food to be preserved are exhausted through a pin hole which is afterwards closed by a thin metallic disc which is secured by soldering or heat. The disc may be soldered in place in the ordinary way, or the solder may be applied before the disc is placed in position and afterwards heated, or the disc itself may be made of solder metal, or be autogenously welded to the tin electrically or otherwise. Apparatus is described for exhausting the tin and applying the disc similar to that described in the parent Specification.
Patent GB-569676-A (GB)
Title: Improvements in or relating to sachets containing chemical heating compositions for permanent waving of the hair
IPC: A45D7/06
Filed: 1943-10-22
Abstract: 569,676. Sachets for permanent waving. NAGELE, H. Oct. 22, 1943, No. 17438. [Class 131] An envelope of textile material to contain chemical heating composition to conistitute a sachet for permanent waving of the hair has secured at one side of its outside a sheet of aluminium foil and outside the aluminium foil, a sheet of waxed paper or like material to retain the generated heat within the sachet. As shown, the doubled textile strip a, a<1> forms an envelope to enclose the heating element, being backed at a<1> by a sheet of aluminium foil c and outside the foil a sheet of waxed paper d. On the inside of the textile a is placed a sheet of aluminium foil or absorbent paper b which may be perforated to facilitate access of the chemical solution in which the sachet is immersed to bring about activation of the heating element. The parts are held in place by stitching e.
Patent GB-595443-A (GB)
Title: Improvements in or relating to low density blasting explosives
IPC: C06B31/50
Filed: 1945-07-09
Abstract: 595,443. Explosives. WHITWORTH, E., HORNEL, J. C., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 9, 1945, No. 17442. [Class 9 (ii)] A low-density blasting explosive comprising solid salts, a proportion of dried organised vegetable tissue of carbohydrate character which is preferably of low density characteristics, and a liquid self-explosive compound includes in admixture therewith nitrouanidine in the form of thin needle-like crystals obtained by rapid crystallization from solution in hot watert The vegetable tissue material includes wood meals from low density woods, e.g. balsa wood, vegetable stalk and pith materials, e.g. bagasse. partly refined low density peat materials and cork. According to the examples, nitroguanidine, preceded by a nitrated mixture of glycerol and ethylene glycol mixed with peat containing resin and diammonium phosphate, is added to ammonium nitrate and sodium chloride contained in a mixer. Specification 399,553 is referred to.
Patent GB-755730-A (GB)
Title: Improvements relating to lever-operated electric switches
IPC: H01H23/16
Filed: 1953-06-24
Abstract: 755,730. Tumbler switches. PARSONS, Ltd., C. H., and HANDLEY, G. B. June 24, 1954 [June 24, 1953], No. 17470/53. Class 38(5) An insulating contact-carrying bar 7 having a guide pin 14 vertically-movable in the lower ends of apertures 13 in side plates 12 is biased by springs 9 against a roller 17 on the dolly 2 so that when the dolly is turned about its pivot 11 on the bridge 1 a bridging contact plate 8 (or roller) carried in an aperture 18 in the bar 7 and extending beyond the sides of the latter moves relatively to a pair of fixed contacts 5 mounted on either side of the bar to make or break the circuit. A further contact 8 may be provided at the other end of the bar 7 to co-operate with a further pair of fixed contacts 5 and form a 2-way switch
Patent GB-1110114-A (GB)
Title: Improvements in, or relating to, panels
Inventor: MARSH GERALD PERCY
IPC: B28B19/00
Filed: 1964-04-28
Abstract: 1,110,114. Wall slabs; brickwork panels. PROCTOR & LAVENDER Ltd. 28 April, 1965 [28 April, 1964], No. 17486/64. Heading E1B. A concrete wall slab (not shown) is faced with abutting courses of thin brick or like "slips" 2 having their front faces rebated at least along the longer side to provide horizontal grooves between courses. One of the shorter sides of each slip may also be rebated as shown to produce a simulated-brickwork panel. The slips adjacent two of the panel edges are unrebated. In manufacture the various stretcher and header slips, Figs. 5-9 (not shown) are abutted together face down in a mould and concrete poured thereover. The rear faces of the slips may be grooved to key the concrete, and sand may be sprinkled to prevent concrete penetrating to the front faces.