baber/WOPTO huggingface dataset:
Patent GB-739651-A (GB)
Title: Latex foam sponge
IPC: C08L21/00
Filed: 1954-03-01
Abstract: In forming sponge rubber the froth-forming properties of the latex are improved by adding 0.2 to 1 part per 100 parts by weight of latex solids of an alkali salt of an aliphatic perfluoromonocarboxylic acid having 8 to 18 carbon atoms in the molecule.  The latex may be foamed mechanically or by introducing gas by e.g. the decomposition of a peroxide.  The salt may be ammonium perfluorocaprylate or an alkali-metal or ammonium salt of perfluorolauric, perfluorocapric, perfluoro-oleic, perfluoromyristic, perfluoropalmitic or perfluorostearic acid. The latex may be natural or synthetic e.g. an aqueous emulsion polymerizate of various butadiene-1,3 hydrocarbons or mixtures thereof with one or more other polymerizable compounds, e.g. aryl olefine such as styrene and vinyl naphthalene, the alpha methylene carboxylic acids and their esters, nitriles and amides, such as acrylic acid, methyl acrylate, methyl methacrylate, acrylonitrile, methacrylonitrile, methacrylamide, isobutylene, methyl vinyl ether, methyl vinvyl ketone, vinylidene chloride.  From .5 to 5 parts per 100 parts by weight of latex solids of a stabilizer such as a water-soluble soap of a hydrocarbon soap forming monocarboxylic acid may be added.ALSO:In forming sponge rubber the froth-forming properties of the latex are improved by adding .2 to 1 part per 100 parts by weight of latex solids of an alkali salt of an aliphatic perfluoro-mono-carboxylic acid having 8 to 18 carbon atoms in the molecule.  The latex may be foamed mechanically or by introducing gas by e.g. the decomposition of a peroxide.  The salt may be ammonium perfluorocaprylate or an alkali-metal or ammonium salt of perfluorolauric, perfluorocapric, perfluorooleic, perfluoromyristic, perfluoropalmitic or perfluorostearic acid. The latex may be natural or synthetic, e.g. an aqueous emulsion polymerizate of various butadiene-1, 3 hydrocarbons or mixtures thereof with one or more other polymerizable compounds, e.g. aryl olefine such as styrene and vinyl naphthalene, the alpha methylene carboxylic acids and their esters, nitriles and amides, such as acrylic acid, methyl acrylate, methyl methacrylate, acrylonitrile, methacrylonitrile, methacrylamide, isobutylene, methyl vinyl ether, methyl vinyl ketone, vinylidene chloride. From .5 to 5 parts per 100 parts by weight of latex solids of a stabilizer such as a water-soluble soap of a hydrocarbon soap forming monocarboxylic acid may be added.
Patent GB-571619-A (GB)
Title: Improvements in or relating to the manufacture of shaped articles of pliable flexible non-metallic material and articles obtained therefrom
IPC: B26D3/28
Filed: 1944-03-31
Abstract: 571,619. Cutting-machines for rubber &c. BOLLE, L., and NATIONALE SOC. ANON. March 31, 1944, No. 5966. Convention date, May 21, 1943. [Class 31 (i)] [Also in Group V] In the formation of shaped rubber, &c., articles by a cutting process the material being operated upon is subjected to a compressing operation in a direction parallel to the movements of the cutting-tool so as to modify the shape of the article produced. In Fig. 2 a cutting-out die 2, which when forced through a sheet 1 of material would produce a cylindrical disc, is combined with a plunger 3 which compresses the rubber, &c., as at 4, Fig. 2, so as to produce a disc with a flared edge 8, Fig. 3. In a modification, Fig. 5, the cutter 2 coacts with a support 10 having a recess 11 with rounded edges 12, and a plunger 13 inside the die forces the rubber into the recess 11, and the finished article is similar in shape to that shown in Fig. 3, but with a more pronounced flare. The process can be varied by employing two concentric cutters 2 for producing a flared annular article. In a further modification, Fig. 8, a rod 20 is compressed by a surrounding sleeve 18 in a cylindrical cavity 16 by an annular plunger 19, and the compression of the sleeve 18 is transferred to the end of the rod 20 so as to cause the end 22 to be put under compression and to protrude past a stop 17 where by the action of a skiving knife 2 a disc of rubber is cut off which assumes a concave dish shape.
Patent GB-1025174-A (GB)
Title: Improvements in or relating to the manufacture of pneumatic tyres
Inventor: GOUGH VERNON ERIC
IPC: B29D30/22
Filed: 1962-02-16
Abstract: 1,025,174. Making pneumatic tyres. DUNLOP RUBBER CO. Ltd. Jan. 29, 1963 [Feb. 16, 1962], No. 5971/62. Heading B7C. A strip or pocket 6a forming a tread reinforcement and having at least two layers of rubberized parallel cords 7, 8, which cords are to extend, in the crown region of the finished tyre, at a bias angle of 5 to 30 degrees to the mid-circumferential plane, is formed initially with the cords of the layers crossing as shown and running at bias angles substantially equal to the complementary angle to the said finished bias angle, the strip or pocket then being stretched to deflect the cords to the finished bias angle. Figs. 5, 6 (not shown), illustrate the " before " and " after " orientations in the pocket of Fig. 1. A machine as in Fig. 2 (not shown), may be used to partly stretch a pocket 6a prior to fitting it to a tyre carcass, which is then expanded to toroidal shape, or a carcass may be expanded to contact with a fully stretched pocket. In the former case (Fig. 3, not shown), the pocket 6a is secured to the adjoining tyre plies, along the mid-circumferential line only, by " consolidating " locally or by spikes, to enable the cords to deflect during subsequent shaping. More than one such pocket may be used. The initial bias angle may be within 10 degrees either way of the complement of the finished bias angle. The strip or pocket is applied to a carcass on a cylindrical or crown former, but the tyre may then be completed in a diaphragm curing press.
Patent GB-558389-A (GB)
Title: Improvements in coupling devices
IPC: F16H35/10
Filed: 1942-05-04
Abstract: 558,389. Vehicle couplings. GENERAL AIRCRAFT, Ltd., SEVIOUR, L. W., and DRAPER, E. H. May 4, 1942, No. 5989. [Class 103 (v)] A coupling device, particularly for preventing excessive load when towing an aircraft on the ground, comprises two pivoted jaws 12, 13 which form a closed eye when brought together and are carried on the end of a spring plunger 5 in a tube 3, furnished with a coupling eye 4 at its closed end. Under normal load tall portions 14, 15 of the jaws engage the tube 3 to maintain the eye closed. Upon compression of the spring by a load greater than the normal the tail portions 14, 15 disengage the tube so that the eye between the jaws is opened.
Patent GB-794820-A (GB)
Title: Improvements in or relating to automatic telecommunication exchanges
Inventor: BRAY FREDERICK HARRY
IPC: H04Q3/52
Filed: 1954-10-05
Abstract: 794,820. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. Sept. 30, 1955 [Oct. 5, 1954], No. 6050/57. Divided out of 794,812. Drawings to Specification. Class 40 (4). The description is identical with that of Specification 794,812, the claims being directed to the particular arrangement of the three non- numerical switching stages in tandem in combination with the testing for free paths therethrough by test equipment separate from and common to the said stages. Specifications 734,345, [Group XL (c)], 756,322, 759,005, [Group XL (c)], 788,592, 794,040, [Group XIX], 794,813, 794,814, 794,815 and 794,816 are referred to
Patent GB-119823-A (GB)
Title: Improvements in Machines for Polishing Metal Articles.
Inventor: GHIJSEN HUBERT CORNELIS
IPC: B24B31/00
Filed: 1918-04-09
Abstract: 119,823. Ghijsen, H. C., and Naamlooze Vennootschap Vitrite Works. April 9, 1918. Abrading-medium, article moved in or through.-A machine for polishing metal articles, such as the bases of electric lamp bulbs, comprises a drum rotating on a vertical axis and carrying a series of rotary holders, the lower ends of which dip into a trough rotating in the contrary direction and containing dry or moistened polishing-material. The trough 4 is driven by .bevel gearing 5, 7 and rotates upon the lower end of a stationary vertical axle 1. Towards its upper end, the axle 1 carries loosely a drum 8 driven in the opposite direction by a double train of spur gearing, the intermediate shaft 11 being mounted in bearings in a stationary bracket 13. At intervals round the edge of the drum are secured brackets 17 forming bearings for rotary shafts 16 having collars 19 at their upper ends, the articles to be polished being pushed over their lower ends. The shafts 16 are driven by pulleys 20, to which they are connected by feather keys 22, Fig. 3, thereby allowing the shafts 16 to be raised and lowered. The pulleys 20 make driving contact with a moving belt 36, which extends round the rear half of the drum 8 and is guided by rollers 34, 35 as it leaves the pulleys 31, 32. As they approach the front of the machine, the pulleys 20 move away from the belt 36, and the work-holders 16 are lifted by a curved plate 42, Fig. 3, attached to an horizontal arm 41 secured to a shaft 38, which is rocked by the engagement of a vertical arm 39 with a series of cams 40 formed on the upper surface of the drum 8. When the collar 19 reaches the front edge of the plate 42, the shaft 16 falls slightly until it is arrested by a sector-shaped stationary plate 44, which supports the shaft until the lamp base again enters the trough 4 at the opposite side of the machine. The lower end of the shaft 16 carries a spring- controlled sliding pin 24, Fig. 3, which rises with the shaft until a collar 27 strikes the bracket 17, the further upward movement of the shaft causing the pin 24 to push off the lamp base. When the collar 19 falls on to the plate 44, the pin 24 springs back to normal position, which allows another lamp base to be thrust by hand over the lower end of the shaft 16.
Patent GB-837928-A (GB)
Title: Improvements in or relating to film viewers for viewing cinematograph films
Inventor: ORLANDE STANISLAS
IPC: G03B21/32
Filed: 1958-02-26
Abstract: 837,928. Kinematograph apparatus. HAYNOR Ltd. Feb. 26, 1958, No. 6160/58. Class 97(1) A kinematograph film viewer comprises a viewing screen on which an image is projected and at least one means, for changing the direction of the projection beam, which can be moved along and rotated about a predetermined axis to position the projected images on the screen. In one form, shown in plan, the film is drawn from a feed spool, not shown, through the viewer by rotating a take-up. spool, not shown, passing round a guide roller 18, other similar guide rollers, not shown, and a sprocket 19 by which an optical compensator block 26a in a framework 26b is rotated by gearing 25, 27. The film also passes over a projection aperture in a block 17. The film edge may be notched, for editing purposes by a pivoted knife 35 operated by a handle 35a. The film is illuminated by a lamp in a housing 10 with condenser 16. The projection objective 29 is secured in a tubular housing 11e by a screw 30 engaging a spiral slot for initial focusing. The projection beam is reflected by mirrors 31, 33 on to the screen 34. The mirror 31 is mounted on a rod 32, rotatable and axially adjustable in the housing 11e by a knob 32a. The instrument casing comprises a main plate 11 carrying the film guiding parts and having, formed integrally, the housing 11e and the lower part of the lamphouse. Attached to this plate are the lamphouse cover 10 and the cover 12 enclosing the projection light path and supporting the screen.
Patent GB-1294365-A (GB)
Title: Threshold circuits
IPC: H03K5/04
Filed: 1970-02-10
Abstract: 1294365 Pulse circuits INTERNATIONAL BUSINESS MACHINES CORP 10 Feb 1970 [2 June 1969] 6225/70 Heading H3T A circuit producing an output pulse having a width independent of that of an input pulse comprises a differrential amplifier 11 having an inductor 25a connected between its input terminals 12a, 13a. The inductor serves to maintain the difference between the average voltages at the input terminals constant notwithstanding D.C. level shift due to the input capacitor 21a and also to time the output pulse width. A positive pulse causes the amplifier to change state. The voltage at the input 13a during the pulse decays due to the input capacitor 21a and the voltage at the other input terminal 24a rises in accordance with the time constant of the inductive circuit 25a &c. When these voltages cross, the amplifier output returns to its original state and the output pulse thus terminates. It is explained with reference to Fig. 2 (not shown), that the output pulse width is independent of mark-space ratio. The differential amplifier may be one of a pair in an integrated circuit and the outputs may be commoned and fed back to the input 44 of the second to form a bi-stable circuit which is switched by an input signal when a strobe II pulse occurs. Reset occurs at the end of the strobe.
Patent GB-163514-A (GB)
Title: Improvements in artificial hands
IPC: A61F2/58
Filed: 1920-03-02
Abstract: 163,514. Anderson, W. P., Clarke, N. C., Whitelaw, J. F., and Read. R. H. March 2, 1920, Limbs, artificial.-In artificial hands with pivoted fingers of the type in which the first finger is normally held closed against the thumb, which may be either stationary or pivoted, and from which position it cannot be moved by the action of an external force applied thereto, means are provided inside the hand for moving the finger, comprising a spring-controlled spindle 8 with means for rotating the same against spring pressure. The fingers are pivotally mounted on the hand, as described in Specification 136,253, but the first finger-piece is provided with an extension 6 projecting into the body of the hand and which is slotted at 15 to receive a pin 14 which is integral with a quadrant-shaped member 12. This is rigidly attached to the spindle 8, the normal closed position of the finger being such that the line 8-14 is at right-angles to the slot 15, and the member 12 is adapted to be rotated by pulling on a cord or like member which passes outside the hand, and thus to open the finger. The opening movement of the finger is limited by the length of the slot 15. In the construction described, the first and second fingers move simultaneously and, on opening, automatically open the third and fourth fingers, but, as described in Specification 136,253, separate and independent closing mechanism may be provided for the third and fourth fingers if desired.
Patent GB-546519-A (GB)
Title: Improvements in cathode ray tubes of the television transmitting type
IPC: H01J31/36
Filed: 1941-05-15
Abstract: 546,519. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 15, 1941, No. 6289. Convention date, May 15, 1940. [Class 39 (i)] A cathode-ray tube for television transmission comprises a mosaic target 18 on which an electrostatic image of the information to be transmitted is generated and which faces away from the source 9 of the scanning beam ; the target is offset from the normal path of the beam which is guided beyond and back to the target to neutralize the electrostatic image thereon. As shown, the target is positioned at the point where a cylindrical part 4 and a toroidal part 2 of the envelope join. A photo-cathode 5 is placed at the window 3 of the part 2 to receive the optical image of an object 6. The electron gun system 9 is placed at the free end of the cylindrical part 4. A magnetic coil 10 surrounds the envelope and extends over the whole space between the gun 9 and photo-cathode 5, and preferably slightly beyond. A main coating 20, and ring shaped coatings 21, 22 are formed on the inner wall of the toroidal portion of the envelope to form electrodes. Alternatively these may be replaced by fine wire mesh. The electron gun and the deflecting means comprising electrostatic plates 14 and magnetic coils 15 are as described in Specification 542,219. The signal plate 19 and the cathode 9 operate at zero potential, the potential of the photo-cathode 5 is negative and the coating 20 positive relatively to the cathode 9; the potential of the rings 21, 22 are intermediate the potentials of 5 and 20, and 9 and 20 respectively. With this arrangement, the electron image thrown on the mosaic by the photo-cathode is displaced laterally and sheared mto rhomboidal form as shown at 29, Fig. 3. The scanning electron beam after passing the mosaic is reflected and the scanning area is also displaced and sheared to coincide with the electrostatic image. The conditions necessary are that the velocity of the scanning beam when passing the mosaic is about “ the velocity of the electron beam from the photo-cathode. This ratio may be dispensed if the plan of one of the co-ordinate deflections of the scanning beam is made non- perpendicular to the other.
Patent GB-248922-A (GB)
Title: Loaded signalling conductors
IPC: H01B11/14
Filed: 1925-03-09
Abstract: 248,922. Western Electric Co., Ltd., (Western Electric Co., Inc.). March 9, 1925. Loaded cables.-A coating 7 of non-combustible material, e.g. oxide or powdered mica, is formed on the outer surface of the conductor 5, 6 or on the inner surface of the loading tape 8 to prevent welding between the tape and the conductor when the heat treatment necessary to develop high permeability in the tape is applied. Alternatively, the surface of the conductor or tape may be roughened by abrasion or sand blast. The loading tape may be of an alloy 78¢ per cent nickel with 21¢ per cent iron, and a non-combustible oxide coating may be formed on it prior to the heat treatment by heating it to 500-600‹ C. for about ten minutes and then allowing to cool slowly in air. Copper oxide may be similarly formed on the surfaces of the individual parts of the cable 5, 6 prior to the heat treatment. Specification 197,331 is referred to.
Patent GB-549459-A (GB)
Title: Improvements in or relating to variable permeability tuning systems
IPC: H03J1/10
Filed: 1941-05-19
Abstract: 549,459. Inductors. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 19, 1941, No. 6446. Convention date, May 17, 1940. [Class 38 (ii)] [Also in Group XXXVI] In a permeability tuning system, for improving tracking between the serial circuit and the oscillator circuit, the effect of an oscillator coil with a variable pitch winding is produced by winding back a few turns so as to be superimposed on the end turns of the winding, the direction of winding being kept the same. Fig. 2 shows an aerial coil 7 and oscillator coil 9 uni-controlled by identical cores 8, 11 connected to a frame 49; 50 slidable by means of a cord 53 and knob 52. To facilitate tracking, the last few turns 10 of coil 9 are wound back over the other turns, keeping the winding direction the same and thus producing the effect of a variable pitch winding. Coil 9 is of greater diameter than coil 7 since the frequency range is less. In addition core 8 is made to enter coil 7 slightly in advance of the entry of core 11 into coil 9. In a modification (Fig. 3, not shown) the superimposed turns 10 are wound on an insulating sleeve slidable on the inner turns.
Patent GB-583032-A (GB)
Title: An improved process for the control of temperature in catalytic oxidations
IPC: B01J8/18
Filed: 1943-04-22
Abstract: <PICT:0583032/III/1> A substance to be oxidised is mixed in a fluid state with an oxidising gas and a finely-divided solid oxidation catalyst, and the mixture is passed upwardly through a reaction zone 10 at a velocity sufficient to maintain the catalyst in a turbulent state. A suspension of catalyst in reaction products is withdrawn from the upper part of the zone, and after cooling either in a heat-exchanger 32 or by direct admixture of recycled gas carrying suspended catalyst (supplied by pipe 31) is passed to a separator 15. The separated catalyst is collected in a hopper 1 feeding a standpipe 2 from which it is returned to the reaction zone the suspension is cooled in heat-exchanger 8 to a temperature considerably below that of the reaction.  The reaction products leaving the separator 15 pass through another cyclone separator 17 and are collected in condensers 20, 23, the residual gases being recirculated either to pipe 7 or to pipe 31.  Specification 554,227 is referred to.
Patent GB-1451987-A (GB)
Title: Yarn stands for flat-bed knitting machines
IPC: D04B15/40
Filed: 1974-02-13
Abstract: 1451987 Knitting machines WIRKMASCHINENBAU KARL-MARX-STADT VEB 13 Feb 1974 [19 Feb 1973] 06485/74 Heading DIC  A yarn stand for a flat bed knitting machine having cam carriages which circulate in a closed path is provided with a yarn stand directly mounted on the frame I of each carriage, such stand comprising a central tube 9 with bobbin holder plates 6, 7 disposed thereon at different levels and interconnected by further tubes 10, each plate 6, 7 being adapted to carry up to four yarn bobbins 5, and there being provided tensioning means 12 and, at the top of the tube 9, yarn guides 16, a knot signalling device 17 and a broken yarn end detector. The stand may have three or four holder plates, in which case it is driven separately from and in synchronism with the cam carriage and is provided with a guide. The stand is mounted on the frame 1 by means of a yoke 4 and bolts 2, 3 with the interposition of a plate 8 of shock-absorbing material. Yarn feed wheel units may be provided for the individual bobbins.
Patent GB-582210-A (GB)
Title: Improvements in the manufacture of composite products of rubber and rayon and the products obtained thereby
IPC: C08J5/04
Filed: 1944-04-06
Abstract: Artificial silk yarns for reinforcing rubber articles are formed from viscose containing a heat-hardening aldehyde resin, or the components thereof, in an amount not exceeding 5 per cent by weight of the cellulose content of the viscose.  The aldehyde may be formaldehyde, and the other component may be a phenol, e.g. a polyhydric phenol such as resorcinol.  Formalin and resorcinol are dissolved in diluted aqueous caustic soda, and the resulting solution mixed with viscose during or after the stage at which the cellulose xanthate is treated with sodium hydroxide to allow ripening to take place.  The ripened viscose is spun into threads.ALSO:Rubber is bonded by vulcanization to artificial silk yarns which have been formed from viscose containing a heat-hardening aldehyde resin, or the components thereof, in an amount not exceeding 5 per cent. by weight of the cellulose content of the viscose.  The aldehyde may be formaldehyde, and the other component may be a phenol, e.g., a polyhydric phenol such as resorcinol.  Formalin and resorcinol are dissolved in dilute aqueous caustic soda, and the resulting solution mixed with viscose during or after the stage at which the cellulose xanthate is treated with sodium hydroxide to allow ripening to take place, the ripened viscose is spun into threads each comprising 500 filaments and two such threads are twisted together to produce a cord.  The yarn may be doubled, cabled, or woven to fabric before applying the rubber composition.  Weftless cord fabric may be made by calendering rubber on to a number of parallel cords.  Tyre covers containing layers of rubberized cord fabric, and belting or hose made up of layers of rubber and artificial silk, may be produced.  The rubber may be natural, reclaim, or synthetic, e.g., a co-polymer of butadiene and styrene.
Patent GB-1084663-A (GB)
Title: Absorption refrigerating system
IPC: F25B15/02
Filed: 1966-02-15
Abstract: 1,084,663. Refrigerating. TRANE CO. Feb. 15, 1966 [June 16, 1965], No. 6583/66. Heading F4H. In an absorption refrigeration system of the type employing lithium bromide solution and water as absorbent and refrigerant respectively, the refrigerant and the intermediate and weak solutions are circulated by three centrifugal impellers mounted on a common shaft in a pump housing 43. Refrigerant for cooling and lubricating the pump motor 44, the pump shaft bearings and the motor shaft bearings is obtained from the discharge chamber 75 of the refrigerant-insulating impeller through lines 99, 101, 108 and 109 and is returned to the inlet chamber 74 of that impeller through lines 106, 111 and 107. Alternatively the motor and bearings may be supplied with mains water supplied and returned through valves 114 and 115 respectively, in which case valves 112 and 113 in lines 99 and 107 respectively are closed.