baber/WOPTO huggingface dataset:
Patent GB-846707-A (GB)
Title: Method of strengthening pipes made of polyolefins
IPC: B29C71/02
Filed: 1956-10-29
Abstract: A polyolefin tube of e.g. polythene, polypropylene, copolymers of ethylene and propylene, mixtures of polythene and polypropylene or polytrifluorochlorethylene is strengthened by heating to a temperature below "the crystallite melting point", and whilst hot expanding it over a mandrel having a diameter greater than that of the tube, and then cooling the tube.  The "crystallite melting point" is defined as the temperature at which crystallites contained in the substance disappear or if the substance is free from crystallites the temperature at which the softening range begins.  For polythene the temperature may be from 100 to 130 DEG C.  The tube may be heated by the mandrel or by external or internal heating.  The mandrel may be conical the side walls being convexly curved and the apex being spherical.  The side walls may have flutes to allow the tube to be partly expanded by an internal fluid pressure.  The Specification states that the expansion is preferably carried out at a temperature such that necking is just avoided.ALSO:A polyolefine tube of e.g. polythene, polypropylene, copolymers of ethylene and propy-lene, mixture of polythene and polypropylene or polytrifluorochlorethylene is strengthened by heating to a temperature below the "crystallite melting point," and whilst hot expanding it over a mandrel having a diameter greater than that of the tube, and then cooling the tube. The "crystallite melting point" is defined as the temperature at which crystallites contained in the substance disappear or if the substance is free from crystallites the temperature at which the softening range begins.  For polythene the temperature may be from 100 to 130 DEG C.  The tube may be heated by the mandrel or by external or internal heating.  The mandrel may be conical the side walls being convexly curved and the apex being spherical.  The side walls may have flutes to allow the tube to be partly expanded by an internal fluid pressure.  The Specification states that the expansion is preferably carried out at a temperature such that necking is just avoided.
Patent GB-1299374-A (GB)
Title: Improvements in or relating to frictional couplings
Inventor: CLAY BENJAMIN ANDREW
IPC: F16D65/56
Filed: 1969-07-01
Abstract: 1299374 Internal shoe drum brakes GIRLING Ltd 22 June 1970 [1 July 1969] 33182/69 Heading F2E In a servo-type internal-shoe drum-brake the force transmitted from the trailing edge 71 of a shoe 51 to the leading edge 72 of a shoe 52 is reduced by means of unit 3 disposed between the ends 53 of the shoes 51, 52 when the force is applied in one direction but is unreduced when the force is applied in the other direction. Shoes 51, 52 respectively engage slots 41 in plungers 4 of the unit 3 which plungers contact a cam 8, pivoted by means of trunnions 21, the cam profile of which is such that when the trailing edge 71 urges the associated plunger against the cam, the latter pivots and by virtue of its profile transmits the reduced force. The shoes may be manually or automatically adjusted and are provided for this purpose with a pin 11 extending from one trunnion 21 and having attached thereto a tie 138, Fig. 3 (not shown), which pulls on a lever (14) pivotalabout a bearing (141) against the bias of a spring 15. During braking in the reverse direction of rotation, a pawl (16) on return movement of lever (14) engages and turns a ratchet wheel 17 under the bias of spring 15 to extend the length of plungers 4 through screw threads 18, one plunger being oppositely threaded to the other. The motion from one plunger to the other is transmitted through the ratchet wheel 17 to a slave wheel 20 associated with the other plunger.
Patent GB-175943-A (GB)
Title: Improvements in ash-trays for smokers
IPC: A24F19/00
Filed: 1921-12-10
Abstract: 175,943. Hannay, D. Rainsford-. Dec. 10, 1921. Ash-trays; cigar and cigarette rests. - A cigar or cigarette is. positively suspended or supported in a spring clip D over a tray A containing water, sand &c. The clips may be secured to a crosspiece C fixed to a plug fitting in a hollow standard B, or may be carried by arms or supports secured to the rim of the tray.
Patent GB-442250-A (GB)
Title: Improvements in shirt fronts
IPC: A41B1/02
Filed: 1934-11-19
Abstract: 442,250. Shirt fronts. HALL, F. K., and BANKS, C. E., 54, Piccadilly, London. Nov. 19, 1934, No. 33205. [Class 141] A dress or like shirt front is formed with narrow zones arranged within the area of the shirt front, and adapted to take up less starch or other stiffening material than either the central or border section thereof when dressed for wear so that the shirt front can flex along these zones to enable it to fit easily about the person, and yield readily to the movements of the wearer. In the form shown, the shirt front a comprises two overlapping halves b, b<1>, each comprising continuous back and front cloths 1, 2, respectively, between which two superposed linings are inserted, each interlining being subdivided into a central section 3<a>, and a border section 3b, which are arranged so as to leave a narrow zone 5 between the edges thereof. In a modification, the shirt front may be undivided. In a further modification, the interlinings may have openwork zones formed therein in register with each other, and corresponding openwork zones may be formed in the back cloth of the shirt front.
Patent GB-745499-A (GB)
Title: Treatment of paper
IPC: D21H17/54
Filed: 1953-12-01
Abstract: Paper of improved wet strength is made by adding to the pulp or applying to the paper, a high molecular weight basic condensation product containing epoxy groups, obtained by reacting epichlorhydrin or dichlorhydrin with a di- or poly-amine of less than 16 carbon atoms, e.g. tetra- or hexa-methylene diamine, di-propylene triamine, g ,g 1-diaminopropyl methylamine, g ,g 1-diaminodipropyl ether, a ,d -bis - (g 1 - aminopropylamino) - butane, bis-(g  - aminopropyl) - piperazine, or N - (1,6-hexanediamine)-3-pyrrolidone.  An example mentions adding 640 parts of dichlorhydrin to 5640 of 25 per cent ammonia, heating to 90 DEG  C., adding 800 parts of sodium hydroxide 50 per cent solution, evaporating to 1000 parts.  About 92 parts of epichlorhydrin are added to 400 of the solution at 10 DEG  C., thereafter the reaction temperature is kept at 80 DEG  C. until the viscosity reaches 180 c.p.  The solution is stabilized with hydrochloric acid.  The condensation product is insolubilized by drying the paper.
Patent GB-1012456-A (GB)
Title: Collapsible tubular containers
IPC: B65D35/02
Filed: 1962-08-31
Abstract: 1,012,456. Collapsible tubes. D. SPIESS. Aug. 31, 1962 [Sept. 2, 1961], No. 33515/62. Heading B8D. [Also in Division B5] A collapsible tube comprises an extruded body formed of two layers 1 and 2, e.g. of polythene and polyamide respectively, the layers becoming bonded together during the extrusion, and a separately formed shoulder piece 4 having a neck formation adapted to be fitted with a closure member. The shoulder-piece may be welded on to the tubular body or injection moulded thereon.
Patent GB-349628-A (GB)
Title: Means for withdrawing the exhaust from internal combustion engines
IPC: F02B1/00
Filed: 1930-08-05
Abstract: 349,628. Exhaustsilencers. WOOD, J. E., 45, Doncaster Road, Armthorpe, near Doncaster. Aug. 5, 1930, No. 33642/29. [Class 7 (ii).] The exhaust is withdrawn by an enginedriven fan f and passes through gauze baffles d<1> in an expansion chamber d cooled by fins d<3>. The charge may be supplied under pressure.
Patent GB-846811-A (GB)
Title: Variable pitch propeller
IPC: B64C11/38
Filed: 1958-10-22
Abstract: 846,811. Variable pitch propellers. UNITED AIRCRAFT CORPORATION. Oct. 22, 1958 [Nov. 27, 1957], No. 33754/58. Class 114. A propeller comprises means to increase or decrease blade pitch, locking means responsive to propeller overspeed to prevent blade pitch decrease and means to disable the locking means when the blades are increasing in pitch. The pitch change motor 20 comprises a cylinder 22 and a piston 24 having cam rollers 26 engaging stationary and rotary cam slot members 28, 30, the latter having a gear ring 32 Figs. 1 and 2, in mesh with a ring 34 carried by the propeller blades 14 so that movement of the piston 24 causes rotation of the blades 14 about axis 18. The pitch lock unit comprises a stationary member 42 and rotary member 44 having cooperating teeth. During normal engine and propeller operation, pressure fluid used in the pitch change motor 20 is also introduced to chamber 40 to move piston 45 which takes member 44 out of engagement with member 42 and thus disables the locking means. Loss of pressure in chamber 40 allows springs 54 to engage members 44 and 42. During normal operation said pressure fluid also enters cavity 60, line 62 and chamber 64, Fig. 3, surrounding disarming valve 66, thence via port 74, annular chamber 76, port 78 and annular chamber 80 to line 82 leading to overspeed flyball chamber 84, said pressure fluid also being directed through chamber 86 and line 88 into chamber 90 so that sliding value 48 is in hydraulic balance. During overspeed conditions flyballs 46 are flung outwardly to overcome force of spring 94 and move valve 48 to the left to drain fluid in chamber 40 through line 50 and annulus 52 thereby permitting springs 54 to engage the pitch lock members. When propeller blades are moving to a higher pitch, skirt 98 carried by the pitch change motor piston 24 moves to the right with respect to stationary sleeve 100 to increase the volume of cavity 75 and reduce the pressure therein, thereby reducing pressure in line 73 and cavity 71 to cause a pressure differential across the disarming valve 66, the piston 68 of which is moved to the left against its spring 72 so as to intially cause land 108 to block off port 74 thereby preventing flow of pressure fluid from chamber 64 to chamber 84. This initial movement of valve 66 also puts annular chamber 76 into direct communication with cavity 71 thereby placing chamber 84 in communication with cavity 75 and thus reducing the pressure in chamber 84. The resultant pressure differential on sliding value 48, in combination with the force of spring 94, is such that flyballs 46 are no longer able to move value 48 to the left to bleed cavity 40 to permit engaging of the pitch lock members, hence the pitch lock is disabled at all times while the propeller blades are increasng in pitch. Further movement of valve 66 to the left enables it to serve as a pressure regulating valve for the pressure in chamber 84. Specifications 514,725, 526,100, 724,284, 754,095 and 777,572 are referred to.
Patent GB-429602-A (GB)
Title: Improvements in calendars
IPC: G09D3/00
Filed: 1933-12-01
Abstract: 429,602. Calendars. HANDY THINGS, Ltd., and HANROTT, H. C., 91, Petty France, London. Dec. 1, 1933, No. 33795. [Class 106 (iv)] A calendar comprises a casing or other support for the reception of a set of month sheets 4 inscribed with the days of the month arranged in a curvilinear formation, and a particular-date indicator 12 pivoted at 6 and slidably carrying a marking window 13. The month cards may be detachably secured within a pocket 3 by pins 5 and may be of the tear-off variety. A supporting flap may be provided at the rear and if desired a hole or hook for suspending the calendar.
Patent GB-320268-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs
IPC: C09B3/46
Filed: 1928-11-19
Abstract: 320,268. Johnson, J. Y. (I. G. Farbenindustrie Akt.-Ges.). Nov. 19, 1928. Pyranthrone dyes.-Pyranthrone is treated with bromine, or agents evolving bromine, in aqueous suspension, in the presence or absence of catalysts such as iodine or iron chloride; the product consists mainly of a dibrompyranthrone which dyes cotton from the vat in more reddish shades than the dibrompyranthrones hitherto known; it is believed to be the Bz : Bz<1>-dibrompyranthrone, and yields the corresponding dihydroxypyranthrone when heated with freshly-precipitated moist silver oxide. Higher brominated pyranthrones are also formed, but if the hydrogen bromide formed is neutralized as it is produced by the gradual addition agents such as caustic soda or potash, ammonia, or the carbonates of alkali or alkaline earth metals or magnesium, or secondary or tertiary phosphates, or urea, the dibrom derivative is almost exclusively produced. In examples, (1) an aqueous paste of pyranthrone is treated with bromine at 60‹C., cooled, freed from excess of bromine by treating with bisulphite solution, filtered and washed, and (2) an aqueous paste of pyranthrone is similarly treated with bromine with the gradual addition of a caustic soda solution so that the reaction mixture remains practically neutral until nearly the end of the reaction, when it is allowed to become alkaline; the product is a nearly pure dibrompyranthrone, which is converted to the dihydroxypyranthrone by heating with moist freshly-precipitated silver oxide.
Patent GB-866612-A (GB)
Title: Improvements in the purification of silane
IPC: C01B33/04
Filed: 1958-10-23
Abstract: Boron-containing impurities are removed from silane by treating with NH3 or an aliphatic or heterocyclic amine and separating a complex compound of boron-containing impurity and ammonia or the amine from the SiH4.  The impurities are boron hydrides, or halides and there should be at least 2 mols. NH3 or amine per mol B2H6 present. Pressure may be 200-500 p.s.i.g. at about 25 DEG C. SiH4. and NH3 should both be gases and there should be at least 1 part NH3 per 100 parts SiH4.  The apparatus should be flushed with H2 or inert gas before reactants are introduced.  Amines may be mono-, di-, or tri-methylamine, or diethylamine, or pyridine. Excess NH3 or amine may be separated from the SiH4 by condensation, e.g. at -125 to -150 DEG C. for NH3, or by selective adsorbent, e.g. synthetic sodium zeolite A activated by heating at 300-400 DEG C.
Patent GB-914286-A (GB)
Title: Improvements relating to magnetic amplifiers
IPC: H03F9/00
Filed: 1960-10-04
Abstract: 914,286. Magnetic amplifiers. SIEMENS & HALSKE A.G. Oct. 4, 1960 [Oct. 12, 1959], No. 33946/60. Drawings to Specification. Class 40 (9). In order to provide an adjustable permanent bias in a three-limbed core of a magnetic amplifier a permanent magnet is rotatably mounted about an axis perpendicular to its magnetic axis so as to be adjustable between positions perpendicular to and parallel to an adjacent core limb. The magnet is preferably adjacent a constriction in the limb. Two magnets may be ganged together by a loop drive so that adjustment of one also adjusts the other equally, each magnet being mounted adjacent an outer limb of the core. The magnets may be bar magnets or discs magnetized across a diameter and are pivotally mounted on a casing surrounding the amplifier.
Patent GB-1120467-A (GB)
Title: Improvements in inks and other film-forming media
Inventor: BROAD DAVID
IPC: G03C1/76
Filed: 1964-08-19
Abstract: 1,120,467. Printing process. E. N. MASON & SONS Ltd. 19 Aug., 1965 [19 Aug., 1964], No. 33949/64. Heading B6C. A method of printing a polyester or polyolefin film material comprises printing onto the said film a liquid composition containing a curable thermoplastics material and a crosslinking agent therefor and subjecting the printed film to conditions whereby the said composition becomes cured. The preferred polymeric material is a polyvinyl formal and hexamethoxymethylmelamine is used as the curing agent. The composition may also contain a light-scattering material e.g. titanium dioxide and an extender e.g. silica. Printing may be by the intaglio method e.g., by a rotogravure cylinder. After printing the ink is subjected to a temperature, of 220‹ F. e.g., by placing the printed article in a suitable oven whereupon the composition is cured and becomes bonded to the film.
Patent GB-918052-A (GB)
Title: Improvements in or relating to tailstock centres
Inventor: SPEIDEL HERBERT
IPC: B23B23/04
Filed: 1960-10-05
Abstract: 918,052. Lathe and like centres. ROEHMG.m.b.H. Oct. 5, 1960, No. 34076/60. Class 83 (3). A rotatable centre has a, point with a cutaway recess and locking means so that the recess may be positioned to enable a cutting tool to be brought up close to the work axis. The centre 1, Fig. 1, supporting a workpiece 9 is normally rotatable in roller bearings in a housing 10. By rotation of a sleeve 6, 7, a pawl 4 is depressed against the pressure of a spring 11 to bring a tooth on the pawl into position for engagement by a projection 5b, Fig. 2, on the stem of the centre. The latter thus becomes a " dead " centre stopped in a definite angular position. A recess is provided in the centre point so that a tool, such as an end-facing tool, may be brought up close to the centre-axis. The centre may be stopped automatically.
Patent GB-928577-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B7/10
Filed: 1960-10-05
Abstract: 928,577. Knitting-machines. G. E. E. HOYNANT. Oct. 5, 1960 [Oct. 6, 1959], No. 34167/60. Class 74 (2). A needle transfer device comprises a body member 1 with a plurality of seatings 2 having widened entrances to receive needles from a knitting- machine with removable needles and a device for holding the needles in these seatings. The spacing and number of seatings 2 depends on the knitting-machine with which the device is to be used. As shown, Fig. 1, the needles are held by a member 4 slidable in eyes 5, member or body 1 may be resilient. Member 4 may be releasable without sliding or may be replaced by a hinged or like plate or by a felt fitting or a spring. In operation with the machine cam box removed and the needle bar open, the transfer device is placed with seatings 2 opposite machine seatings 10, guiding bosses 11 ensuring alignment. In halving the number of loops on the machine, the loops on the even needles A2, A4, A6, ... are transferred to the odd needles A1, A3, A5, ... and then the transfer device receives odd needle A1, A3, ... in adjacent seatings and then replaces these needles in bed 9 in consecutive seatings. Work may be held on the device while the machine is used for other work. With a double bed machine, either two devices are coupled together or a special double device is provided adaptable also to single bed machines. In a modified transfer device a preferably metallic U-shaped channel 13 receives adjustable units 12, e.g. of plastic, separated by gaps 14. Each unit 12 comprises a plurality of needle seatings chamfered at their entrances and has a notch 18 in which a rubber tube 19 is wedged which holds the needles when they are placed in the seatings. With this embodiment, the needle may be received at an angle, Fig. 11, when used with a rib machine, the transfer devices resting on opposite beds.
Patent GB-343454-A (GB)
Title: Improvements in paper or like containers
IPC: B65D3/26
Filed: 1929-11-08
Abstract: 343,454. Opening means for paper &c. containers. WARE, H. M., 44, Normanton Road, South Croydon. Nov. 8, 1929, No. 34214. [Classes 66 and 94 (i).] A sealed container c, of paper or the like, adapted to be waxed or proofed, and having one large end from which the sides converge to the other end which is approximately V-shaped in cross section in one direction, and approximately rectangular in cross section in a perpendicular direction is provided with a cutting cord or strip T of suitable material preferably formed in a loop t<1>, part of which is inside the container and part outside. The cord passes through the container at the points t, t. If desired, instead of forming a loop the cord may terminate in a button at one or both ends. If desired, a spoon or a straw may be attached to the cord for the purpose of removing the contents from the opened container. The cord may be sealed against the inside of the container to hold it firmly for the opening operation or a knot may be tied in the cord at one of the points t on the outside of the container. Specification 337,364, [Class 66, Hollow-ware], is referred to in the Provisional Specification.
Patent GB-1497063-A (GB)
Title: Liquid spraying apparatus
IPC: B05B13/04
Filed: 1975-08-29
Abstract: 1497063 Spray-producers; mounting of spray-guns BINKS - BULLOWS Ltd 29 Aug 1975 [3 Aug 1974] 34291/74 Headings B2F and B2L  Apparatus suitable for spraying paint comprises nozzles 12 mounted on respective discshaped supports 13, and an electric motor 16 for rotating each said support about an axis which is offset with respect to the axis of said nozzle, said nozzles, supports and motor being mounted on a reciprocable carrier 17 which is itself mounted on a pair of rails 18 and 19. Pairs of wheels 20 to be sprayed are mounted on a moving conveyor 21, the vertical spacing of the wheels corresponding to that of the supports 13. The carrier 17 is driven at the same speed and in the same direction as the conveyor 21 by the engagement of a pivotable latch 29 with an upstanding peg 26 or 27 or a drive belt 25, the pivotable latch is moved between an upper inoperable position and a lower operable position by means of a fluid-pressure actuated piston and cylinder unit 28. The return stroke of the carrier is effected by further fluid-pressure actuated piston and cylinder unit 23, the piston rod of said unit being connected to the carrier and the cylinder to the rail 19. A valve controls the admission of pressurised fluid into and out of units 23 and 28 such that unit 23 is actuated while unit 28 is de-actuated and vice-versa. Each nozzle is connected to hoses carrying a supply of paint and a supply of compressed air and a valve may be provided for cutting off the supply of paint during the return stroke. A similar unit may be provided in the opposite side of the conveyor to spray the opposite ends of each pair of wheels.
Patent GB-1256009-A (GB)
Title: Tape device for tape recording and reproducing machines
Inventor: BOLICK FRED CLINARD JR
IPC: G11B23/12
Filed: 1969-07-08
Abstract: 1,256,009. Feeding record tapes. LANIER ELECTRONIC LABORATORY Inc. 8 July, 1969, No. 34315/69. Heading G5R. Two tape driving units 21, 23 are each able to feed a tape 19 into or out of a magazine 12 within which the tape passes round a plurality of rollers 24, 25, 26, 27 to define a plurality of tape paths P1, P2, P3 surrounding a zone Z, and a switch prevents operation of one of the tape driving units when the tape is in these paths. As shown, tape fed in by unit 21 hangs below the zone Z and tape fed in by unit 23 hangs into the zone Z. The tightening of the tape into paths P1, P2, P3 closes a switch 31 which prevents either unit from trying to pull tape from the magazine. When the unit 23 is withdrawing tape from the magazine and there is no tape left in the zone Z, a switch 32 is closed to disable unit 23.
Patent GB-465717-A (GB)
Title: A closure device for tubes and similar containers
IPC: B65D47/28
Filed: 1936-12-15
Abstract: 465,717. Closures for collapsable tubes and similar containers. RUETZ, K. Dec. 15, 1936, No. 34429. Convention date, Dec. 17, 1935. [Class 125 (iii)] In a sliding closure device for tubes and similar containers, there is arranged between the outlet 4 of the container 2 and the slide 11, a wedge member 7 provided on its lower side with a packing plate 6, and the wedge member participates in the movement of the slide over at least a part of its path, in such manner that, on the initial movement of the slide, the wedge pressure on the edge of the opening is first of all removed, and then the wedge member with the packing plate is displaced by the slide to expose the opening. The packing plate is thus protected against undue wear. The wedge member 7 has lateral downwardly projecting flanges 8 engaging loosely in gaps 9 between the nozzle 3 and the side flanges 10 of the slide 11. Guide bars 12 on these side flanges 10 engage between the surface 1 of the tube and ribs 13 on the sides of nozzle 3. A projection 14 on the wedge 7 engages in a recess 18 in the slide 11, the recess being larger than the projection to permit an initial idle movement of the slide to release pressure on the packing plate before it slides. The front of slide 11 on its underside has a sloping surface 19 corresponding with the surface of wedge 7. A gripping bar 20 facilitates actuation of the slide.