baber/WOPTO huggingface dataset:
Patent GB-1303157-A (GB)
IPC: C08L23/12
Filed: 1970-04-03
Abstract: 1303157 Producing polypropylene film or sheeting BADISCHE ANILIN & SODA FABRIK AG 3 April 1970 [5 April 1969] 15890/70 Addition to 1303151 Heading B5B Polypropylene film or sheeting is produced by extruding at a melt temperature of 180 to 360‹ C. a film or sheeting having a thickness of 0À03 to 8 mm. and a width of 150 to 3000 mm. and drawing the film or sheeting biaxially at a draw ratio of from 2:1 to 15:1 (and especially 4:1 to 10:1) at a temperature of the material above 10‹ C. and blow the crystallite melting point of the polypropylene used, which is a blend of 70 to 80% by weight of a polypropylene of which less than 1% by weight is soluble in toluene boiling at standard pressure, the ratio by weight of polypropylene to toluene being 5:95, and 20 to 30% by weight of a polypropylene of which more than 99% by weight is soluble in toluene boiling at standard pressure, the ratio by weight of polypropylene to toluene being 5:95. These polypropylenes have substantially the same intrinsic viscosity and substantially the same molecular weight distribution (determined by the method of gel permeation chromatography). The absolute values of the intrinsic viscosities [#] (measured in decahydronaphthalene at 130‹ C.) of the polypropylenes are within the range of from 1 to 10, preferably 1À2 to 3À8.
Patent GB-769832-A (GB)
Title: Polyphase air blast electric circuit breaker
IPC: H01H33/867
Filed: 1955-06-03
Abstract: 769,832. Air-blast switches; switchgear structures. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. June 3, 1955 [June 4, 1954], No. 15916/55. Class 38(5) A polyphase air-blast switch has a mainly parallelopipedic compressed air container 5 containing the switch contacts 8, 9 which are supported by insulators 6, 7 extending through the top and bottom of the container. In the arrangement shown only the upper contacts 8 are movable and may be actuated by a contact-operating mechanism 6<SP>1</SP>, but the lower contacts may alternatively or additionally be movable and operated by suitable mechanisms. The. container may be of sheet iron and stiffened by walls 13 arranged between the contacts of the various phases. The container may be secured to a carriage 1 housing the switch control apparatus, the carriage being withdrawable from a cell (not shown) having fixed isolating contacts 4 co-operating with contacts 3 on the insulators 6, 7. Specification 770,100 is referred to. '
Patent GB-328824-A (GB)
Title: Improvements in doffing mechanism of flyer spinning and like frames
IPC: D01H9/04
Filed: 1929-05-23
Abstract: 328,824. Boyd, T. A., Boyd, H. A., and Boyd, Ltd., J. & T. May 23, 1929. Spindle rails; doffing-arrangements.- In flyer spinning and like frames provided with rotatable spindle rails for doffing purposes, the rails are maintained in the operative spinning position by means of rods 13 on a rocking shaft 12 which engage studs 5<1> on the rails, a.nd adjacent rails are connected by a coupling comprising an axle 8 and snugs 8<2> to engage the rails.
Patent GB-1377556-A (GB)
Title: Heat-stable thermoplastic saturated polyesters
IPC: C08G63/672
Filed: 1972-04-06
Abstract: 1377556 4,4<SP>1</SP> - Bis - (# - hydroxyethoxy)- tetraphenylmethane CIBA-GEIGY AG 6 April 1972 [21 April 1971] 15951/72 Heading C2C [Also in Division C3] 4,41 - Bis - (# - hydroxyethoxy) - tetraphenylmethane is prepared by reacting 4,4<SP>1</SP>-dihydroxytetraphenylmethane with ethylene chlorohydrin.
Patent GB-1176457-A (GB)
Title: Improvements in or relating to Sealant Compositions
Inventor: AGGER REGINALD THOMAS
IPC: C08K5/00
Filed: 1966-04-12
Abstract: 1,176,457. Sealant compositions. BOSTIK Ltd. 11 April, 1967 [12 April, 1966], No. 15971/66. Heading C3R. A sealant composition is formed by mixing a first part comprising a curable liquid polymer having terminal mercaptan groups and a second part comprising a curing agent for the polymer, the composition also comprising an aryl sulphone as a plasticizer for the cured polymer. The aryl sulphone may be in either part. Other plasticizers and solvents may be included. In examples liquid polysulphide polymers are mixed with xylyl naphthyl sulphone and tolyl phenyl sulphone, and cured with lead dioxide; the compositions also contain chlorinated biphenyls, dimethylol-p-cresol, toluol, methyl ethyl ketone, calcium carbonate, titanium dioxide, stearic acid, lead stearate and carbon black.
Patent GB-1083922-A (GB)
Title: Electric cells
IPC: H01M4/02
Filed: 1965-04-14
Abstract: 1,083,922. Batteries. MIFALEI YAM HAMELAH B.M. April 14, 1965 [April 14, 1964], No. 16060/65. Heading H1B. An aqueous electrolyte comprising zinc halide e.g. zinc bromide or zinc iodide, and either bromine or iodine is circulated from a reservoir 11 through a carbon-zinc or carbon-cadmium cell and back to the reservoir. The cell illustrated comprises a Buchner funnel 1 containing a porous porcelain plate 2, a zinc grid 3 carrying a bed 4 of granular zinc, a support 5 of asbestos or porous synthetic material, and a graphite grid 6 carrying a bed 7 of granular graphite. Zinc bromide solution 17 is supplied from the reservoir 11 to the cell via a tube 9 and collects in a vessel 13 from whence it is returned to the bottom of the reservoir 11. The reservoir has a layer 17 of zinc bromide floating on a layer 18 of bromine so that the electrolyte supplied to the cell is continuously being replenished with bromine. When the concentration of the electrolyte has increased to a given value the electrolyte has to be replaced or regenerated. Regeneration takes place in an electrolytic cell and the deposited zinc may reconstitute the zinc grid or may be in granular form. Electrolyte circulation may be induced by gravity or a pump 15 as shown. Tetramethylammonium bromide may replace bromine.
Patent GB-995404-A (GB)
Title: Method of making molded article
IPC: B29C41/04
Filed: 1964-04-17
Abstract: 995,404. Rotational casting of hollow articles. UNITED STATES RUBBER CO. April 17, 1964 [June 17, 1963 (2)], No. 16096/64. Heading B5A. A method of making hollow articles, e.g. balls, comprises depositing in a mould a flowable dry charge of particles of a thermoplastic vinyl resin and a plasticizer therefor, the charge being less in volume than the volume of the mould, rotating the mould in a plurality of planes, and heating the charge to fuse it into a layer over the surface of the mould, cooling the layer and removing the article from the mould. The particles may be granules or dice and preferably have a volume not in excess of 0.156 cubic inches. The particles may be of mesh size 10- 250 mesh, preferably distributed throughout this range. The resin and plasticizer may be pre-fluxed to form a plasticized composition which is then divided into particles, or the resin may be internally plasticized. The mould may be heated throughout rotation, or the mould may be coated with a plasticizer or silicone oil prior to the introduction of the charge into the mould, the charge is distributed while the mould is cold, and the mould is subsequently further rotated and heated to fuse the charge. An exact measured charge may be introduced into the mould, or an excess charge may be used, the excess being dumped from the mould after distribution of the particles. The vinyl resins may include P.V.C., copolymers of vinyl chloride and vinyl acetate or polyvinylidene chloride.
Patent GB-298963-A (GB)
Title: Improvements in or relating to vacuum tubes
IPC: H01J5/04
Filed: 1927-06-16
Abstract: 298,963. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). June 16, 1927. Low-pressure metallic-vapour apparatus.-In vacuum tubes having a wall at least partly of quartz, particularly tub e s emitting light by temperature radiation or by gas or vapour discharge. the quartz has sealed to it in succession several glass members containing no alkalimetal oxide and having successively increasing coefficients of expansion. A glass having a coefficient near that of the material of the leading-in wires may thus be used at the seals. The quartz bulb 1 of a tube emitting ultraviolet light has sealed to it successively five annular glass members 10, 11 which contain decreasing quantities of silica and increasing quantities of calcium oxide or aluminium oxide or both and which all contain about 10 per cent of boric oxide. A sixth glass member having a coefficient of expansion of 35.10<-7> is sealed on and is followed by further glass members, such as of Murano and Jena glasses, of increasing coefficients of expansion until lead glass having a coefficient of about 90.10<-7> is sealed on to form the pinch 2 giving raliable seals with platinum leads 3. The leads 3 support two anodes 8, 9 and an incandescent cathode 5 in an atmosphere of rare gas and mercury or other vapour or gas. An oxide cathode giving an arc discharge at a tension lower than the ionization voltage of the gas may be used.
Patent GB-729421-A (GB)
Title: Critical speed indicator
Inventor: YOUNG ALEXANDER JAMES
IPC: G01P1/10
Filed: 1950-06-28
Abstract: 729,421. Alarms. BARCLAY, CURLE & CO., Ltd. Feb. 26, 1952 [June 28, 1950], No. 16119/50. Class 7(2). [Also in Groups XIX and XXXVII] A critical speed indicator for a marine oil engine having a rotary crankshaft S, Fig. 1, subject to torsional vibrations comprises a rotatable mass 1, a spring coupling 6 through which the mass is rotated by the engine, relatively movable components 8, 7 respectively driven by the engine and by the mass, and a signal operable by relative motion of a predetermined magnitude between said components. The mass-and-spring 1, 6 form a vibratory assembly having the same natural frequency of vibration as the natural frequency of the torsional vibration of the shaft S and the arrangement is such that, during critical speed conditions, said assembly is in a state of resonance so that the amplitude of its vibration is magnified sufficiently to impart said predetermined amount of relative movement to said components and the signal is operated. A rotary casing 5 is mounted on the end of the shaft S and is closed by a cover plate 11 of insulating material. A disc 4 of insulating material is secured to the casing 5 and carries a shaft 2 on which the flywheel 1 is mounted by ball-bearings 3. The spiral spring 6 is connected at its ends 6a, 6b to the flywheel 1 and the shaft 2 respectively. Two conducting strips ending in contacts 7 are fixed to the outer face of the flywheel and embrace two arms 8 pivoted on pins 9 journalled in bushes 10 fixed to the cover plate 11. Spring-urged brushes 17 held in a ring 18 engage a metal slip ring 16 on a bush 15 secured to a bracket 14. The arms 8 are normally held bysprings 12, Fig. 2, centrally between the contacts 7. A brush 21, Fig. 1, is spring- pressed into engagement with the shaft 2. The circuit arrangement is shown in Fig. 4 and includes a lamp 25, a supply 23 and a resistance 24. The flywheel 1, Fig. 1, normally rotates with the shaft S and casing 5 but at the critical speed amplitude of vibration of the flywheel and spring assembly 1, 6 is sufficient to cause contacts 7 and 8 to engage and the lamp 25 is operated. The slip ring 16 and the brush may receive current through terminal screws, Fig. 5 (not shown). In an arrangement, Fig. 6 (not shown), in which the shaft S is replaced by a camshaft subject to axial and rotary movements the bush carrying the slip rings 17 is axially movable in its supporting bracket.
Patent GB-638755-A (GB)
Title: Improvements in or relating to a vibration damper and method of damping
IPC: F16F15/173
Filed: 1947-06-19
Abstract: 638,755. Torsional &c. vibration-dampers. HOUDAILLE-HERSHEY CORPORATION. June 19, 1947, No. 16193. Convention date, Feb. 24. [Class 108 (iii)] A vibration damper comprises a housing or casing adapted to be secured fixedly to, and rotate with, a rotary mass to be damped, a flywheel mounted in closely spaced operational co-operation within the housing and a viscous fluid filling the area within the housing unoccupied by the flywheel so as to provide a fluid coupling between the housing and the flywheel on rotation of the former and to support the latter in fully spaced relation to the housing. In the construction described, a hub 33 has welded thereto at 42, a casing 34, so as to define an annular chamber 35 for a flywheel 38. On assembly, after insertion of the flywheel, a flush-fitting cover-plate 37 is welded in position in a peripheral groove 43 of the casing 34. Oil (preferably a silicone) is introduced through plugged-orifices 44. The clearance between the hub and the inner periphery of the flywheel 38 is sufficiently great to enable the flywheel to be supported by the lower part of the outer periphery of the casing, at low speeds and at rest. The flywheel 38 may have axial movement relative to the casing in order to damp longitudinal vibrations. The casing 34 may be a pressing, but alternatively may be cast integral with the hub 33 (as in Figs. 1, 2, not shown). In a further construction (Fig. 3, not shown), the casing is formed by annular pressing of channelled crosssection, the channel opening in the longitudinal direction and being closed by an annular closure plate. To the inner annular surface of the casing is welded an annular plate forming a hub. The construction shown in Fig. 4 embodies a pulley for a drive-belt 47 by means of a bevelled portion 52 of the casing 34 which co-operates with a ring 48 which is welded at 42, to the casing and has radial reinforcing ribs 53.
Patent GB-1002931-A (GB)
Title: Thermo-chemical joining of nylon fabrics
IPC: D06M23/18
Filed: 1964-04-20
Abstract: 1,002,931. Seaming non-metallic sheet material. MONSANTO CO. April 20, 1964 [April 22, 1963], No. 16209/64. Heading B5K. Textile fabrics constructed of at least 50 per cent nylon fibrous material are seamed together by coating overlapping edge portions thereof with a solution of chloral hydrate and then heating to effect thermal-chemical union thereof. Heat may be applied by radiation, convection or conduction. The fabrics may be cooled after seaming by directly applying a coolant thereto. The solvent for the chloral hydrate may be water, an alcohol, e.g. methanol or ethanol, or an ether, e.g. dimethyl ether or diethyl ether. Preferably, an aqueous or methanolic solution containing 25-90% chloral hydrate by weight is used. In one embodiment, Fig. 1 (not shown), the longitudinal edges of nylon fabrics are overlapped. Chloral hydrate solution is sprayed, brushed, wicked, padded or otherwise applied to the superimposed edge portions. Heat 4 pressure is then applied, e.g. by a hot flat iron. In a modification, the edges of the fabrics are separately dipped into chloral hydrate solution before overlapping. In a second embodiment, Fig. 2, nylon fabrics 10, 11 are overlapped and a nylon thread 12 comprising continuous filaments and carrying chloral hydrate solution is positioned along the area of overlap. Heat and pressure is applied, e.g. by an internally heated roller. In a further embodiment, Fig. 4, fabrics 14, 15 are unrolled and fed between rollers 16, 17 so that adjacent edges overlap. Nylon filament yarn 18 from a bobbin 19 is coated with chloral hydrate solution 20 by a wick material 22 extending into the solution. The yarn 18 is fed between the overlapped edges of the fabrics 14, 15, a guide 24 being provided. Rollers 25, 26 provide heat and pressure, the central portions 27 between insulators 28 being heated. Specified types of nylon are nylon-66, nylon- 6, nylon-610, nylon-4, nylon-7, nylon-11 and fibre-forming copolymers thereof. The invention is applicable for closing the toe opening of nylon hose knitted on a conventional circular knitter and seaming tubular nylon lace.
Patent GB-1013928-A (GB)
Title: Apparatus for detecting when a cyclically moving part reaches a predetermined temperature
Inventor: GILBERT THOMAS JOHN
IPC: G01K13/04
Filed: 1962-04-27
Abstract: 1,013,928. Temperature alarms. GLACIER METAL CO. Ltd. April 26, 1963 [April 27, 1962], No. 16225/62. Heading G4N. [Also in Division F1] Means for detecting when a cyclically moving part of apparatus reaches a predetermined temperature comprises a first resonant circuit 8, 8a carried by the moving part; a second resonant circuit 12, tuned to the same frequency, carried by a fixed part, and inductively coupled to the first circuit; and a temperature-sensitive device which opens or closes a connection in the first resonant circuit to change the energy drawn by the first resonant circuit from the second, the change operating a warning device, and/or controlling the operation of the apparatus. Overheating of a bearing 2 causes the bearing metal to melt, shorting leads 5, 6, and a signal at the resonant frequency of the circuits applied to terminals 13 is then transmitted through the amplifier 14 to operate relay 15 and thus actuate an alarm or control the operation of the machine. The device may be mounted on the rotor blades of a turbine, Figs. 2, 3 (not shown), or on a piston of an I.C. engine, Fig. 4 (not shown), and a thermal switch may be employed in place of a fusable element. Instead of completing the tuned circuit the fusable element may be arranged to remove a short from the tuned circuit, Fig. 6 (not shown). A number of individual pairs of resonant circuits each associated with separate moving parts of a machine may be fed to a common relay by a selector switch, Fig. 7 (not shown).
Patent GB-1046775-A (GB)
Title: Teaching aid
Inventor: PAYNE KENNETH
IPC: G09B29/00
Filed: 1962-04-30
Abstract: 1,046,775. Line indicators. TONESCRIPT PRODUCTIONS Ltd. April 29, 1963 [April 30, .1962], No. 16343/62. Heading B6W. [Also in Division G5] An appliance for use in teaching comprises a U-shaped frame 1, 2 on which is mounted a manually rotatable drum 5 upon which a programmed teaching chart 13 can be secured, the lines of the chart being successively visible through a slot 12 in a shield 11 which is slidable into position in slots 10 in the frame. The chart 13 may be secured on the drum by elastic bands 15 or other means. Holes 3 in the frame parts 2 receive the ends 4 of the drum to which are attached cross-pieces 6 serving as handles to rotate the drum. A ring of depressions in an end 4 of the drum may be engaged by a ball catch for locating the drum, or a one-way ratchet device may be provided.
Patent GB-801196-A (GB)
Title: A fastener more particularly for securing a board or the like to a ceiling or other support
IPC: F16B15/00
Filed: 1955-06-07
Abstract: 801,196. Nails, staples &c. WIEDMER H. June 7, 1955 [June 8, 1954, No. 16367/55. Class 89(2). A fastener, e.g. for securing a fibre or like board 9, Fig. 1, to a ceiling or other support 1, comprises teeth 5 each secured to an arm 8 and pivoted to a bridge 2 which is fixed to the ceiling by a nail 4. The tips of the teeth initially engage the board substantially at right angles thereto and the board is then pressed towards the ceiling until the arms are engaged thereby to cause the said tips to move outwardly in curved paths until the board engages the bridge. In a modification the teeth 20, 22, Fig. 4, are integral with a bridge 16 pressed from sheet-metal, the bridge being fixed to the ceiling by nail 26 and being flattened by the board as shown in Fig. 7. Additional teeth may extend from the bridge centrally thereof to engage the board, and towards the ends thereof to engage the ceiling. The fastener may be rectangular in plan view or have divergent ends.
Patent GB-666491-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C29/00
Filed: 1948-06-17
Abstract: 666,491. Convertible aircraft. GIROZ, H. E. June 17, 1948 [June 17, 1947; June 17, 1947], Nos. 16375/48 and 16376/48. Class 4. An aircraft comprises two propellers or sets of propellers arranged at opposite sides of its vertical median longitudinal plane and adapted to rotate about substantially horizontal axes, the radius of each propeller being greater than the distance of its axis from the supporting surface when the aircraft rests on its landing supports, an electric motor for each propeller or set of propellers, each motor being mounted in close proximity to the driven propeller shaft to form a propeller-motor unit, and means for producing a. take-off lift in the aircraft while preventing the blades of the propellers from fouling the supporting surface. In the embodiment shown in Fig. 1a, a fuselage 101 carries a pair of aeroplane wings 113 and accommodates turbo-generators. Propeller-motor units 105-108 comprising high frequency electric motors and a reduction gear drive rotary wings 109-112, are mounted on bearings 115, 116, 119, 120 for orientation from the position of normal flight shown on the right hand side of the figure to the position for landing and take-off shown in the left-hand side. The axes of orientation of the motor units are arranged to pass through the centres of gravity of the units. In a modification shown in Fig. 2c, a pair of wings 207, 208 carry motor units 205, 206 driving rotary wings 209, 210 and are orientable, about axes 215, 216 which coincide with the wing main-spar axes, from the normal flight position shown on the right to the hovering flight position shown on the left. The axes 215, 216 are arranged to pass through both the centre of gravity and the centre of pressure of the wings 207, 208. The wings may be orientated by geared servo motors. The pitch of the rotary wings may be varied to vary the thrust according to their use as propellers or helicopter rotors and also to control the aircraft in place of the normal control surfaces.. A differential electric control may be used for the latter purpose. The speed of the turbines driving the alternators may be kept constant, the fuel consumption being varied according to the rotor torques. The power output of an alternator mounted on the ground may assist or replace the power output of the alternator mounted in the aircraft for take-off, the power being transmitted by means of a long cable wound on a drum.
Patent GB-569844-A (GB)
Title: Improvements in the manufacture of an anti-bacterial agent
Filed: 1943-01-18
Abstract: Purified solutions of penicillin are prepared by passing a solution of crude penicillin in an inert water-immiscible organic solvent through an inert water-insoluble solid water-absorbent material impregnated with an aqueous solution of a base buffered to a pH between 5 and 7.0, and recovering the penicillin.  The preferred water-insoluble material is silica gel, but fine kieselguhr, pumice or china clay may be used.  The preferred buffering media are ammonium or potassium phosphates, sodium phosphate-citric acid, and mixtures of triethanolamine phosphates. It is necessary that substances such as alcohols which tend to deactivate the penicillin should be excluded, and that the temperature should be kept below 0 DEG  C.  Suitable classes of organic solvents mentioned include esters, ethers and chlorinated hydrocarbons.  Specific solvents mentioned include amyl acetate, peroxide-free ether, anisole, chloroform, ethylene dichloride, o-dichlorbenzene and nitrobenzene. In examples: (1) a crude amyl acetate solution of penicillin is passed through a tube packed with silica gel which has been mixed with a small quantity of aqueous potassium phosphates (pH 6.6) such that the gel is still in the form of a dry powder.  The column is developed and then elutriated with amyl acetate and separated into cuts, which vary in activity.  (2) A column is prepared as in example (1) and through this is passed an ether solution obtained by acidifying calcium penicillin with phosphoric acid and extracting with ether. The column is elutriated with ether and eleven fractions of varying activity are obtained.  (3) The less active fractions, from example (2), are collected and again passed through a column such as is used in example (1).