baber/WOPTO huggingface dataset:
Patent GB-716323-A (GB)
Title: Processes for making organic polysilicates
IPC: C08G77/02
Filed: 1951-08-08
Abstract: Organic polysilicates derived from alcohols having four or more carbon atoms (including aromatic, carbocyclic and heterocyclic alcohols) and/or phenols or naphthols are made by reacting one mole of silicon tetrachloride with from 1.5 to 3 moles of the desired alcohol and/or phenol, simultaneously or successively removing the remaining chlorine by reaction with an excess of a lower alcohol (excluding tertiary butyl and tertiary amyl alcohols) having a boiling point substantially lower than that of the alcohol and/or phenol used in the first stage, simultaneously or successively hydrolysing the ester groups derived from the lower alcohol by means of the theoretical quantity of water and finally distilling off the lower alcohol.  Acid acceptors, scavengers, catalysts, neutralizing or condensing agents for eliminating non-ionic chlorine, hydrogen chloride, hydroxyl radicals and excess alcohol may be used and stabilizing additives such as amines, carbonates, oxides, hydroxides, salts, porous silica and alumina may be used in addition to the lower alcohol. In an example: to 1 mol of silicon tetrachloride was added 2.3 mols of mixed decanols under reflux and with vigorous stirring; to the product were added with cooling 2.4 mols isopropanol containing 0.8 mols water.  After the initial reaction the mixture was heated to 100 DEG C. and then slowly to 200 DEG C. to distil off all the isopropanol.  The product was scavenged with decanols and orthosilicate distilled off at low vacuum.  An intermediate product can be isolated by driving the initial reaction to completion and removing the dissolved hydrogen chloride.  A table is given showing comparative properties of decoxysiloxanes prepared by the invention and by other processes.  The Specification refers to the preparation of polysilicates by hydrolysis of orthosilicates, the interaction of silicon oxychlorides with alcohols or phenols, the hydrolysis of alkoxy and aroxy chlorosilanes in a solvent in the presence of pyridine and the reaction of silicon tetrachloride with lower alcohols and water.
Patent GB-1130297-A (GB)
Title: Rotary carrier
Inventor: HASLAM BRYAN STANLEY
IPC: F16D43/04
Filed: 1966-04-28
Abstract: 1,130,297. Centrifugal clutches. IMPERIAL CHEMICAL INDUSTRIES Ltd. 26 April, 1967 [28 April, 1966], No. 18678/66. Heading F2C. [Also in Division D1] A sleeve, for example a yarn winding tube, is driven from a spindle 1 by a housing 3 holding a number of centrifugally-operated balls 8 which move outwardly to slide a conical sleeve 7 axially and thus force outwardly balls 6, held in radial bores in the housing 3, to engage the inner surface of the sleeve.
Patent GB-1458413-A (GB)
Title: Xanthyl derivatives of isophthalic and terephthalic acids
IPC: B41M5/145
Filed: 1974-02-05
Abstract: 1458413 Xanthyl derivatives of isophthalic and terephthalic acids CHAMPION PAPER CO Ltd 5 Feb 1974 [5 Feb 1973] 18690/76 Divided out of 1458411 Heading C2C A novel mixture of 4,6-bis-{9<SP>1</SP>-(3<SP>1</SP>,6<SP>1</SP>,9<SP>1</SP>-trihydroxy)xanthyl}isophthalic acid and 2,5- bis - {9<SP>1</SP> - (3<SP>1</SP>,6<SP>1</SP>,9<SP>1</SP> - trihydroxy)xanthyl} terephthalic acid having the formulae is prepared by heating together, in the presence of a dehydrating agent, a mixture of 1 mole of pyromellitic dianhydride and 4 moles of a resorcinol which is unsubstituted in at least one of the 4- and 6- positions and is of the formula in which X is hydrogen, halogen, alkyl or nitro. Suitable dehydrating agents include anhydrous zinc chloride and boron trichloride etherate and the reactants are suitably heated in a solvent, e.g. toluene or xylene.
Patent GB-647587-A (GB)
Title: Improvements in or relating to seats for mechanical seals between relatively rotatable parts
IPC: F16J15/36
Filed: 1947-07-14
Abstract: 647,587. Stuffing-box substitutes. CRANE PACKING, Ltd. July 14, 1947, No. 18702. Convention date, Aug. 31, 1944. [Class 122(v)] A seat for a mechanical seal comprises a ring 21 contained in a moulded body member 19 on a flexible support 16. A sealing washer 22 is urged into contact with the ring 21 by a spring 23 confined between seats 24 and 25. The seat 24 carries a washer 28 and a clamping ring 30 which clamps a rubber sleeve 29 to the shaft 11, the other end of the sleeve being confined between the washer 28 and the sealing washer 22 the resulting fold in the sleeve permitting longitudinal movement of the seat 24 and washer 22 relative to the shaft. A separator 33 prevents contact with the shaft 11 at this point. The insert ring 21 may be of a ceramic material, cast iron, Stellite, stainless steel, or a precious metal such as silver, whereas the body member 19 is of any substance which can be formed into an article of the desired shape, finish and dimensions by a moulding operation, e.g. thermo-setting compounds, cold mould compounds, powdered metal compounds, and die castings. The rotatable washer 22 is of carbon, bronze, compressed powdered metal, or a composition such as Teeplelite and those known under the Registered Trade Marks " Bakelite '' and " Morganite."
Patent GB-313923-A (GB)
Title: Process for the preparation and separation of the hormones of the anterior lobe of the hypophysis and of the ovary
IPC: A61K38/24
Filed: 1929-06-18
Abstract: 313,923. Schering-Kahlbaum Akt.- Ges. June 19, 1928, [Convention date]. Medicines for internal use.-The hormones of t'he ovary and of the anterior lobe of the hypo. physis are obtained from the placenta, or from dispersions or preparations thereof, by extraction with an organic solvent miscible with water such as methanol, some water being added when dry materials are treated, followed by removal of the solvent from the extract, extraction of the ovarial hormone from the residual liquid by means of ether, benzene or like solvent, and precipitation of the hypophysis hormone from the residual liquor, for instance by slowly adding the liquor to alcohol. Alternatively the hypophysis hormone may first be precipitated and then, after concentration of the solution and taking up the residue in water, the ovarial hormone extracted. The ovarial hormone may be purified by the processes described in Specifications 276,994, 291,006 or 307,054.
Patent GB-238208-A (GB)
Title: An improved scaffold frame for use in the construction of aircraft
IPC: B64F5/10
Filed: 1925-07-22
Abstract: 238,208. Junkers, H. Aug. 9, 1924, [Convention date]. Benches, work, and bench fittings. - A frame to facilitate the erection and repair of aircraft, and serving to support the aircraft. from the ground, comprises a supporting - frame for each wing, the frames acting as templets for the wings or their attachment supports, and if necessary supporting- frames also for the bow and stern of the body, all fixed on a common base in correct relative position. Figs. 1 and 3 show two frames 1 with transversely adjustable screw supports 3 for the main cross-spars of the central portion of the aircraft, and two frames 6, 10 detachably secured to the base and provided with connections 7 for fitting the engine framing and adapters 11 for the body girders and eyes for the steering planes &c. A weighted cord passing over a pulley 8 determines the centre line of the craft. Hinged stages 5 can be turned down over the wing stumps when the latter are completed. Fig. 4 shows a portable device in which lateral hollow members 14 provided with sighting devices 16 are mounted on cross-beams 21 supported on jacks 15. The devices 16 facilitate the erection of the frames in correct position and co-operate with measuring staffs 18, 20 which correctly offset various parts of the aircraft from the sighting plane. An additional jack 22 may support the rear end of the body at the correct height. The members 14 may be sheet metal boxes adapted to house the jacks, 15, 22 and the sighting instruments during transport.
Patent GB-765701-A (GB)
Title: Improvements relating to fire-extinguishing apparatus
Inventor: CLIFFORD WILFRED JAMES
IPC: A62C13/76
Filed: 1954-06-25
Abstract: 765,701. Storing gases under pressure. PYRENE CO., Ltd. June 27, 1955 [June 25, 1954], No. 18745/54. Classes 8(2) and 102(2). [Also in Group XXI] A fire extinguisher is provided with a lifting handle which is connected to a mechanism for breaking a sealing disc or diaphragm or to a mechanism for opening a spring loaded valve, so that extinguishing liquid is released when the extinguisher is lifted by means of the handle, a pin or other device being provided to lock the handle against movement until the apparatus must be used. In Figs. 1 and 2 a water container 1 carries a bracket 4 in which is mounted a piercing mechanism 5 operable to break the seal of a bottle 3 of compressed carbon dioxide which screws into the bracket 4. A lifting handle 17 extending across the top of the container 1 is pivoted by a removable spindle 20 to the bracket 4 and is formed with a short tail 30 bearing upon a head 13 of the hollow cutter 11 of the piercing mechanism. The spindle 20 has a square section 19 which engages a square hole in the handle 17, and normally the spindle 20 is prevented from rotating in the bracket 4 by a locking pin 28. In order to use the apparatus the locking pin 28 is withdrawn so that when the apparatus is lifted by the handle 17 its weight causes the piercing mechanism to operate. The handle 17 can be detached by removing the spindle 20, and can be used as a spanner to open the filler cap 31 at the top of the container 1, for which purpose it is formed with a projection 32 which can enter any of several holes 33 in the filler cap. Specification 761,052 is referred to.
Patent GB-314024-A (GB)
Title: Improvements in and relating to closures for bags and similar receptacles
IPC: A44B19/32
Filed: 1929-06-19
Abstract: 314,024. International General Electric Co., Inc., (Assignees of Darst, J. M.). June 21, 1928, [Convention date]. Securing paper bags, special means for. - Bags such as are used in vacuum cleaners are provided with a large opening which is closed by a mechanical device, such as the " zipper " closure 13, and made dusttight by flexible means 16. The sealing means may consist of rubber strips provided with thick meeting edges, and may be fixed to the bag by the same stitches 17 as are used for attaching the closing device 13.
Patent GB-335217-A (GB)
Title: Improvements in catalysts for destructive hydrogenation
IPC: C10G1/06
Filed: 1929-06-19
Abstract: 335,217. Strong, H. W., and Imperial Chemical Industries, Ltd. June 19, 1929. Alloys.-In the destructive hydrogenation of carbonaceous materials tin alloys which are not molten at the reaction temperature are employed as catalysts. Suitable alloys of tin are those with iron, copper, magnesium or phosphorus which have a melting point above 500‹ C. or the reaction temperature whichever is the higher. Examples are alloys of tin with iron containing 5 per cent of tin and melting at 968‹ C., or gunmetal containing 90 per cent of copper and 10 per cent of tin. Up to 80 per cent of tin may be used in alloy with iron; bronze and phosphor bronze may also be employed. The alloys may be supported on metals or alloys, such as iron or a steel containing 18 per cent of chromium, 8 per cent of nickel, and 0.1 per cent of carbon. A suitable alloy of tin with iron may be prepared by treating tin plate in the manner set forth in Specification 335,215, [Class 32, Distilling &c.]. The tin alloy may be prepared by heating the iron and tin together and cooling the resultant product. Specification 174,321, [Class 32, Distilling &c.], also is referred to.
Patent GB-221484-A (GB)
Title: Improvements in thread and yarn winding machines
IPC: B65H54/28
Filed: 1924-08-08
Abstract: 221,484. Schlafhorst & Co., W. Sept. 4, 1923, [Convention date]. Winding-machines; thread guides.-A guide for traversing the yarn or thread in cross-winding machines comprises two wings connected to collars 18, 19, Fig. 3, or to the ends of a collar on a rotary shaft, so that the yarn is guided by the circumferential parts 16, 17 of the members and so that the space between them is clear of the radial supporting members a, b, c. The circumferential parts may overlap at the parts where the traverse of the yarn is reversed, so that the yarn is guided by the slots thus formed. The wings may be formed of wire, as shown in Fig. 3, or of solid or perforated discs, or the walls of the halves of a split-drum may be cut away so that only narrow bands are left to form guiding- edges, as shown in Fig. 8. or so that the complete guide slot is left. The bobbin is driven by a roller 26 which also serves as a guide for the yarn and facilitates neat winding at the ends of the bobbin. The sleeves that carry the collars 18, 19 are driven by a spring-pressed friction clutch which slips if the operator's hand is caught between the wings. Hand-rests 29 are provided to protect the operative during piecing, and slotted guards 30 are also provided, which serve also to lead the yarn to the wings. Wire, sheetmetal or like devices may be used for leading the yarn if the guards are not fitted.
Patent GB-678378-A (GB)
Title: Window frame with air actuated pivoted flap draught proof ventilator
IPC: E06B7/04
Filed: 1949-07-19
Abstract: 678,378. Windows; ventilators. SANDERSON, C. July 19, 1949, No. 18935/49. Classes 20(iii) and 137 [Also in Group XXV] A window incorporating a pivoted flap ventilator which allows the entry into the room space of a predetermined quantity of air irrespective of the wind pressure against the win- .dow, consists of an outer frame 10 having two outwardly-opening, removably-mounted sashes 15 which are hinged at the tops on winged screw spindles 24 each engaging in a metal bushed hole in the frame 10. The upper sash 15 does not reach the top member of the frame 10, the space left being closed by a baffle board 30. Mounted on the inside of the board so as to cover holes 31 which are cut through it, are boxings 33 inside each of which a flap 34, carrying weights 37, hangs freely on a spindle 35. Under normal conditions, the flap hangs substantially vertically, allowing air to enter the room above and below the flap. Stronger currents of air tend to close the flap against the rear side of the boxing, the weights 37 acting as stops to prevent the complete stoppage of air flow.
Patent GB-1048855-A (GB)
Title: Improvements in or relating to glass fiber optical systems
Inventor: HICKS JOHN WILBUR
IPC: C03B37/15
Filed: 1965-05-05
Abstract: <PICT:1048855/C1/1> In the manufacture of fused glass fibre optical devices having a multiplicity of individually insulated light conducting channels extending end-to-end, a plurality 21 of relatively rigid but resilient glass clad glass rods 22 are supported in spaced side-by-side relation, as between the wires 26 of woven wire screens 24, 25, or perforations 29 in a plate 28 (Fig. 10, not shown), and are then pressed endwise into intimate side-by-side relation to a heating zone 54 where they are fused together.  The rod assembly 21 is secured above one screen 24 by a resin 32 to an adaptor 30 with a reduced part 34 held in an arm 43 extending from a slide 40 mounted for vertical movement on a pair of columns 36, 37 (Fig. 4, not shown) and operated by a lead-screw 46 engaging a threaded lug 47 thereon.  The heating zone 54 is fixedly mounted on an arm 53 on a platform 52 clamped to the columns 36, 37 and comprises an annular electrical heating element 62 aligned with the adapter 30 and opening 65 in arm 53. The second screen 25 rests on a spacer 68 and a die 66, of carbon to prevent sticking, having a tapered central opening 67, the lower end of which is substantially the same shape as the rod assembly 21 and of a size to just take the rods 22 in intimate side-by-side relation as they are pressed down by rotation of lead-screw 46. The heated and fused rod assembly 21 is then drawn out to a multifibre bundle 23 by means of a rotatable drum 70 operated from the same motor 50 as the lead-screw 46 by means of suitable gearing 49.
Patent GB-353200-A (GB)
Title: Improvements in charge forming devices for internal combustion engines
IPC: F01M3/04
Filed: 1930-06-21
Abstract: 353,200. Ventilating crank chambers. STEVENS, H. D., 20, Cleveland Road, Stoke, Coventry. June 21, 1930, No. 18951. [Classes 7 (ii) and 7 (iii).] Oil-laden fumes from a crank case a are delivered by a pipe f to a passage leading to the air intake c<1> of a carburetter. The breather of the crank case is closed by a cover d<4>, which carries either an oil dipstick g, an air filter, or an air inlet valve. Steam or water vapour can be admitted to the pipe f by a pipe i.
Patent GB-185285-A (GB)
Title: Improvements in and connected with music records
IPC: G10F5/04
Filed: 1921-07-14
Abstract: 185,285. Walker, J. J. July 14, 1921 Drawings to Specification. Tracker-bars; tune sheets and the like.- A music sheet of the type described in Specification 1859A/05 comprising principal note slots having one or more companion note slots, is distinguished bv the alternation, transversely of the sheet, of the slots belonging to one note with those belonging to a neighbouring note. The ports in the tracker-bar are arranged in rows, in staggered formation, the ports corresponding with any given note slot and its companion slot or slots being in the same row.
Patent GB-1200026-A (GB)
Title: Color concentration discriminators
IPC: H04N1/60
Filed: 1968-04-23
Abstract: 1,200,026. Colour printers. ITEK CORP. April 23, 1968 [May 8, 1967], No.19166/68. Heading G2A. [Also in Division G1]. Subject-failure in a photographic colour printer is avoided by scanning the transparency to be printed detecting colour changes of more than a predetermined significance and integrating the colour signals only from regions exhibiting such colour changes. The transparency 28, Fig.1 to be printed at 48 is scanned transversely by the flying spot of a cathode-ray-tube 26. Dichroic mirrors 22, 24 direct the red, green and blue components of the transmitted light to photo-multipliers 16, 18, 20 and the colour signals therefrom are fed through gates 12 to integrators 38 which determine the colour balance of the transparency and supply a signal a servo 44 which positions subtractive filters in the printing beam to make the print integrate to grey. Colour subject failure is eliminated by passing the colour signals to a discriminator which detects large areas of uniform hue and, by closing gates 12, prevents the corresponding colour signals from affecting the filter setting. In the discriminator, Fig.2, (not shown) the colour signals are converted to their logarithms, and difference signals corresponding to (log red)- (log green) and (log-red)-(log blue) are derived. The difference signals are differentiated and applied to level detectors to set a mono-stable multi-vibrator when the red/green or red/blue ratio changes by more than a predetermined amount. The signal from the multi-vibrator keeps the gates 12 open for a pre-set time where after they close unless the level detectors have again responded in the meantime.
Patent GB-678289-A (GB)
Title: Improvements in or relating to machines for cutting shapes from sheet material
Inventor: COLLINSON FREDERICK BAKER
IPC: B26F1/42
Filed: 1949-10-07
Abstract: 678,289. Cutting designs. COLLINSON'S PATENTS, Ltd. Oct. 7, 1949, No. 19179/49. Divided out of 678,270. Class 31 (i). A machine of the type described in Specification 678,270 is provided with a multiple pattern of knives wherein within each element of the multiple pattern there is provided a resilient or pivoted arm or lever which is depressed by the roller as the multiple' knife pattern is traversed by it and then reacts or is caused to react so as to eject the cut shape from the knife pattern. As shown in Fig. 5, each element of a multiple knife pattern is provided with a pair of levers 35 each having arms 36, 37, the direction of movement of the knife bed being from left to right. As the arm 36 passes under the roller it is depressed, raising arm 37 which ejects the portion of the cut material adjacent thereto. In a modification, not shown, resilient stripper-members are provided in place of pivoted members. Specification 579,343 also is referred to.
Patent GB-755160-A (GB)
Title: Process for treating coagulates of polymers obtained in emulsion polymerisation
IPC: C08L57/00
Filed: 1954-07-01
Abstract: Coagulates of polymers obtained by emulsion polymerization of olefinically unsaturated compounds are treated by pressing the moist coagulates in a press, particularly a continuously operating screw-press, to remove water, and thereafter grinding the pressed coagulate.  An example relates to the treatment of polyvinyl chloride prepared by emulsion polymerization in the presence of sodium laurate as emulsifier and potassium persulphate as catalyst, coagulation being effected by the addition of nitric acid, the pressing operation being effected in a screw-press operating at a pressure of 400 atmospheres.
Patent GB-1110059-A (GB)
Title: A yarn package carrier
IPC: B65H49/06
Filed: 1965-05-07
Abstract: 1,110,059. Package supports. LEBRECHT TIGGES. 7 May, 1965 [18 June, 1964; 11 July, 1964], No. 19310/65. Heading B8M. A yarn carrier comprises a radially flexible wire shell formed by a single spring bent to form longitudinal corrugations, the base end portions of which are held by a closed and rigid sleeve which extends around the base end and which limits the radial flexibility thereof. The base end portions of the corrugations may extend radially outward to form feet which are enclosed in the sleeve which is preferably of U-shaped cross-section. The sleeve is preferably formed of upper and lower annular plates joined as by spot welding at their radially outer edges, and the inner edge of the lower plate being turned up to form an inner wall, thus restricting radially inward movement of the wire. The upper plate is formed with slots receiving the arms of the corrugations either in pairs or singly.
Patent GB-1142722-A (GB)
Title: Improvements relating to machine tools
Inventor: PATON LESLIE
IPC: B23Q5/32
Filed: 1966-05-03
Abstract: 1,142,722. Machine tool details. DELTA MACHINE SERVICES Ltd. 19 July, 1967 [3 May, 1966], No. 19335/66. Headings B3B and B3C. A machine tool comprises an indexable worktable 1, Fig. 1, drilling heads 4, a tapping head 5, and an indexing drive for the table which also provides the feed for the tool heads in synchronism with the indexing of the table. The drive to table 1 comprises an indexing mechanism 7, Fig. 4, driven by an electric motor 10 through a belt and pulley 8, 9. Each tool head is a separate unit having a motor 12, Fig. 2, which rotates a tool spindle 18 through a belt and pulley 20, 21, and the heads are selectively placed in the required position on the bed 3. The feed movement of each spindle 18 against a spring 35 is controlled by a rotary cam 22, which engages a pivoted lever 24, which in turn engages a second lever 28 connected to a sleeve 30, axially fixed on the spindle. Each cam is rotated from shaft 13 by a belt and pulley 40, 41, a gear-box 36, a flexible drive cable, e.g. 37, and a worm and wheel reduction gear-box 38 providing more than a ten to one reduction.
Patent GB-147443-A (GB)
Title: Improvements in or relating to cathode tubes
IPC: H01J1/20
Filed: 1920-07-07
Abstract: 147,443. Ges. f³r Drahtlose Telegraphie. Oct. 10, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Vacuum tubes.-In a valve for use as an oscillation generator the cathode 4 is heated by discharge from an auxiliary filament cathode 3, a high potential, of the order of 3000 volts, being maintained between the cathodes. The anode 11 is connected through a tuning circuit 10 with the filament cathode 8 of a rectifier 5, the anodes 6, 7 of which are connected with the windings 15, 16 of a transformer, the middle point 21 of which is connected with the cathode 4. The auxiliary cathode 3 is connected with the windings 15, 16 through two rectifiers 17, 18 and is thereby maintained at a negative potential of 3000 volts with respect to the cathode 4. The grid 13 is connected with a point in the tuning-circuit 10 which is 180 degres out of phase with the anode.