baber/WOPTO huggingface dataset:
Patent GB-865688-A (GB)
Title: Solvent compositions, and solutions of copolymers of vinyl chloride and vinyl acetate dissolved in such solvent compositions
Inventor: ROESER GERALD PHILIP
IPC: C09D127/06
Filed: 1958-06-24
Abstract: A solvent composition for vinyl resins consists essentially of an aromatic hydrocarbon consisting of benzene, toluene, xylene, or a mixture thereof, and from 9% to 75% by weight of propylene carbonate based on the combined weight of propylene carbonate and the aromatic hydrocarbon.  Viscosities are compared for combinations of propylene carbonate and/or xylene with polymers derived from vinyl chloride alone or mixtures thereof with (a) vinyl acetate, (b) vinyl acetate and maleic anhydride, and (c) vinylidene chloride.  The hydrolysed copolymer of vinyl chloride with (a) and a polymer derived from vinyl acetate alone are also specified.  The effectiveness of the solvent composition as a solvent for copolymers of vinyl chloride with (a) containing less than 90% by weight of vinyl chloride is indicated, such a mixture being used to form a film on tinplate.  Unspecified pigments, dyes, waxes may be included in the resin mixture. Specification 758,489 is referred to.ALSO:A solvent composition for vinyl resins consists essentially of an aromatic hydrocarbon consisting of benzene, toluene, xylene, or a mixture thereof, and from 9% to 75% by weight of propylene carbonate based on the combined weight of propylene carbonate and the aromatic hydrocarbon.  In an example a composition consisting of a 87% vinyl chloride/13% vinyl acetate copolymer in a solvent of 67% xylene and 33% propylene carbonate is filmed on tinplate at about 4.7 mg/sq.in. and baked thereon at about 335 DEG F. (168 DEG C.) for ten minutes.  The weight of the residual coating is 18% of the total weight of the solution. The solvent composition is said to be a useful solvent for copolymers of vinyl chloride and vinyl acetate containing less than 90% by weight of vinyl chloride. Specification 758,489 is referred to.
Patent GB-671683-A (GB)
Title: Improvements in or relating to plant pots and the like
IPC: A01G9/02
Filed: 1949-08-03
Abstract: 671,683. Plant pots. DARE, A. W. Sept. 14, 1950 [Aug. 3, 1949], No. 20267/49. Class 6 (ii) Plant pots are constructed of separable walls 1 connected by hinge pins 5 and supporting one or more platforms 10 above the lower edge by means of pins 9 passed through openings 8.
Patent GB-535572-A (GB)
Title: New crystallised glucoside and a process for its isolation from red squill
IPC: C07G3/00
Filed: 1939-07-12
Abstract: 535,572. Glucosides. ELLIS, L. S. E. (Sandoz, Ltd.). July 12, 1939, No. 20345. [Class 2 (iii)] A glucoside poisonous to rodents is isolated from red squill by extracting in the presence of water by means of an organic solvent immiscible with water. An extract of red squill may be made with methanol or ethanol which extract may be concentrated, dissolved in water, and treated with lead or other heavy metal hydroxide to precipitate coloured bodies ; the glucoside is then extracted with a solvent such as a hydrocarbon, halogenated or nitrated hydrocarbon, ether or ester, chloroform, methylene chloride and carbon tetrachloride being specially suitable. Preferably an alcohol having at least 4 carbon atoms is added to the solvent. The purification of the crude extract with a heavy metal hydroxide described above may be omitted, and purification may be effected by extraction with a small quantity of chloroform, ether or petroleum ether. The glucoside extract may be evaporated and the residue dissolved or suspended in water and shaken with an immiscible solvent containing an alcohol having at least 4 carbon atoms which extracts the rodent poison leaving the cardiac glucosides in the aqueous layer. The solvent layer may be evaporated, the rodent and poison glucoside being taken up in methanol and water and crystallized therefrom.' Specification 430,280 is referred to.
Patent GB-499337-A (GB)
Title: Improvements in or relating to the manufacture of sliding clasp fasteners
IPC: B29D5/02
Filed: 1937-07-22
Abstract: 499,337. Sliding - clasp fastenings. CORNER, G. H. C., and LIGHTNING FASTENERS, Ltd. July 22, 1937, No. 20383. [Class 44] The non-metallic fastener elements of a sliding-clasp fastener are directly cast on to the tapes using temperatures and pressures insufficient to damage the tape or to cause the material to be forced out of the mould at the joints between the mould parts or into the portions of the tape between the fastener elements and the stringer tapes thus formed are treated with a solvent whereby the fastener elements are caused to adhere more securely to the tape. Only the tape and not the fastener elements themselves need be immersed in the solvent as the solvent will rise by capillary action to the attachment surface. The external faces of the elements are therefore not likely to be damaged. Specification 391,146 is referred to.
Patent GB-186212-A (GB)
Title: Improvements in and relating to printing machines
IPC: B41F17/32
Filed: 1921-07-29
Abstract: 186,212. British Thomson-Houston Co., Ltd., (General Electric Co.). July 29, 1921. Printing-apparatus for curved surfaces; inking- apparatus.-A printing-machine for printing on curved surfaces such as lamp bulbs comprises a rest as 119, Fig. 3, secured to a frame 10 by wing- nuts 120, and formed with a recess 121 on the top of which the bulb is placed ready for receiving an impression from a curved rubber printing-pad 20, Fig. 4, which is attached to a rubber cushion 34 on a cap 35 connected by a pin 36 to a rod 30 which is reciprocated by a crank-pin 18 on a shaft 11 driven by worm gearing. The rod 30 is driven by mechanism which permits the printing- pressure to be adjusted, and which allows the pad 26 to remain in a position which is adjustable while it is inked by a travelling-roller 49, which is guided by a strip 51 as it moves to and fro across the pad from its normal position in contact with a distributing roller 56. The crank-pin 18 is connected by a rod 19 to a pin 20 on a driving- sleeve 22 which slides in a guide 23. A sleeve 27 acts on a shoulder 29 on rod 30 to raise the rod 30, and the sleeve 27 is adjustable. In its downward motion rod 30 is arrested by an adjustable bolt 31, so that the pad stops in the correct position to receive the ink. The inking-apparatus comprises an adjustable duct in which is mounted a duct roller 60 which is rotated intermittently by a pawl 80 on a lever 81 oscillated by a link 83 and lever 84 on a shaft 85 oscillated by a lever 87 and link 88 with a slot engaged by the reciprocating pin 20. The shaft 85 is fitted with a brake, and the pawl 81 is for part of its oscillation masked by an adjustable guard. Ink is transferred to the distributing-roller 56 by a messenger roller 61 mounted in a yoke 62 which is swung by screws 65, 66 mounted in an arm 67 of a bell-crank 68 on a shaft 63 oscillated by a flexible connection with a link 70 having a pin and slot connection with a bell-chank 47 oscillated by an oscillating bell-crank 42 operated by a roller 39 on the driving-sleeve 22. The bellcrank 47 also operates a link 50 which carries the ink-applying roller 49 to and fro across the pad 26. To distribute the ink on the roller 56, a distributing-roller 95 is reciprocated to and fro across the roller by a cam on a shaft gearing with the driving-gear 17 on the shaft 11. When the machine is out of use, the rollers 49, 61, 95 are held out of contact with other surfaces so as to prevent them from losing their shape. The inkapplying roller 49 is tripped by a cam 105, on a handle 107, acting on an arm which engages a projection on the link 50. The messenger and dis. tributing rollers 61, 95, are moved out of action by a cam 110 which is raised on guides 112 to trip the rollers by a lever 115 actuated by cam 105. A projection 125 on gear wheel 17 actuates a striker 123 of a bell 122 after the pad 36 has returned from its printing action.
Patent GB-878862-A (GB)
Title: Improvements relating to photographic apparatus and products useful in such apparatus
IPC: G03B17/52
Filed: 1958-06-25
Abstract: 878,862. Photographic assemblies and products. INTERNATIONAL POLAROID CORPORATION. June 25, 1958 [June 25, 1957], No. 20427/58. Class 98(2) At least one of two sheets, one comprising a cut film having a photo-sensitive area and the other having an area for superposing thereon to aid in processing and normally to receive a diffusiontransfer positive print, has an opening of area corresponding to that of pressure applying members through which, after exposure, the sheets are pulled to squeeze processing fluid between them. The pressure applying members, normally rollers, may thus be of length less than that of the width of the sheets and when not operating may lie at the position of the opening. As shown the first sheet is the upper one 12 of the pair of Fig. 1 and has photo-sensitive portion 18 underlying carrier 16 with opening 78; and the second, the lower one 14 of Fig. 1, has print receiving portion 22 underlying an aperture 24 of carrier 20 with opening 80 and this sheet is provided also with rupturable container 26 for the processing fluid. The sheets with openings 78, 80 are shown also in Figs. 3, 2 respectively. In Fig. 4 (not shown) the pair of sheets have a common leader strip provided with the opening. Numerous manners of using the sheets in magazines and cameras are described, thus in Fig. 16 the front sheet 12 may be exposed through aperture 210 and then pulling of the lowermost leader strip 214 causes meeting of this with its corresponding second sheet 14, rupture of the container by pressure rollers 48, 50 and spreading of the processing fluid, after which the pair of sheets may lie in chamber 224 for a processing period, and subsequently be withdrawn. The presence of the openings avoids necessity for separate threading of pulling members of each pair of sheets through the pressure members as in the arrangement of Specification 788,488 and avoids tendency for premature withdrawal of succeeding sheets along with a pair intentionally withdrawn. Specifications 684,592, 714,412, 730,722, 794,312, 835,433 and 853,877 also are referred to.
Patent GB-221495-A (GB)
Title: Improvements relating to electric condensers for voltage measurements
IPC: G01R15/14
Filed: 1924-08-29
Abstract: 221,495. Haefely et Cie Akt.-Ges., E. Sept. 6, 1923. [Convention date]. E l e c t r o static meters.-An electric condenser for use in voltage measurement in high tension circuits comprises two partially or completely spherical surfaces a, b one of which is connected to one pole of the high tension source whilst the other is insulated from earth and connected through an ammeter c to the opposite pole or to earth. To reduce the effect of external fields, the ammeter may be connected to a segmental portion b<1>. Fig. 3, insulated from the remainder of the sphere band shielded from electrostatic leakage. The segmental portion b<1> may be adjustable in relation to the remaining part b. The condenser may be immersed in a liquid, solid or gaseous dielectric of high disruptive strength such as transformer oil or compressed air. For obtaining measurements on unearthed circuits, the arrangement shown in Fig. 5, may be employed. each phase of the circuit being connected through a condenser to a common measuring instrument in which the middle point of the control winding is earthed. The charging current of the condenser may be rectified by mechanical, gas or vacuum rectifiers thereby enabling a moving coil instrument to be used for measuring the mean value of the rectified current. A foormula for calculating maximum value of voltage from mean current readings is given in the Specification.
Patent GB-709982-A (GB)
Title: Improvements in sterilized plastics
IPC: C08K5/40
Filed: 1950-08-18
Abstract: A composition resistant to bacterial, mould and fungoid growths comprises a polyvinyl compound, particularly polyvinyl chloride, with plasticizers and stabilizers and a thioderivative having a double-bonded sulphur atom, such as tetramethyl thiuram disulphide. Plasticizers specified are dioctyl phthalate and sebacate, butyl acetyl ricinoleate and propylene adipate, and stabilizers used may be aluminium, calcium and cadmium stearates. Other ingredients specified are glycol, glycerol, sulphonated castor oil, sodium dioctyl-sulphosuccinate and cadmiumselenium red.  Reference has been directed by the Comptroller to Specifications 655,533 and 662,926.
Patent GB-420112-A (GB)
Title: Improvements in or connected with water heaters
IPC: A47J31/54
Filed: 1933-07-21
Abstract: 420,112. Heating water. STOTT & CO. (ENGINEERS), Ltd., J., and SCHOFIELD, L., Vernon Works, Lee Street, Oldham. July 21, 1933, No. 20596. [Class 64 (i)] In a water heater for restaurants, &c., having a tubular extension column 3 from the annular water column 1 surrounding a boiler 6 and containing an expansion tube 7 connecting the boiler 6 to near the top of the extension tube 3, and a draw-off pipe 20 connecting an expansion chamber or cup 8 at the top of the extension tube with a tap 21 outside the column, an inverted bell shaped float 14 encircles the upper part of the expansion tube and carries an arm 17 controlling a valve 13 connected with the gas supply to decrease it on formation of excess steam. The arm 17 acts on the spring-pressed valve 13 through a rod 18 in a tube 19, or as shown in Fig. 4, acts directly on the valve which is placed in a cup 4 at the head of the extension column. A steam vent is formed by a pipe 22 leading from the upper part of the expansion tube to outside' the extension column. Water is fed to the column 1 through a ball valve and passes to the base of the boiler 6 through a pipe 9.
Patent GB-1300504-A (GB)
Title: A reversible tip for copy turning tools
IPC: B23B27/16
Filed: 1971-04-19
Abstract: 1300504 Lathe tools DEUTSCHE EDELSTAHLWERKE AG 19 April 1971 [31 Jan 1970] 20596/71 Heading B3T A reversible cutting insert 1 for a copy turning tool has two parallel rhombic faces 16, 17 with cutting noses 8, 9 at diametrically opposed corners, a first cutting edge 2 or 3 adjoining each cutting nose and having a chip breaker groove 11 or 10, the side face 4 or 5 of the inset which extends from the first cutting edge lying perpendicular to the cutting faces 16, 17 whereas the side face 6 or 7 which extends from a second cutting edge 20 or 21 adjoining each nose lies at clearance angle 28 or 29. The inset may be of hard metal and has a central hole 18 for clamping purposes. Clamping may be by a lever clamp or clamping eccentric located on the tool shank 26 and projecting into the hole 18. The tool 26 may have a recess 30 with one undercut face 22 and a plain face 23 for locating the tip and the faces 22, 23 may be slidably adjustable by displaceable slide or key means, which may also serve to clamp the tip against a peg projecting from the base of the recess into the hole in the tip.
Patent GB-1390661-A (GB)
Title: Sensitive silver halide photographic material
IPC: C07D293/12
Filed: 1972-05-03
Abstract: 1390661 Selenium compounds EASTMAN KODAK CO 3 May 1972 [3 May 1971] 20651/72 Heading C2C [Also in Division G2] 3 - (Amidino seleno) - 1 propanesulphonic acid is made by heating selenourea with the product obtained by reacting sodium sulphite with 1- bromo - 3 - chloro - propane. 6 - (Amidino seleno) - hexanoic acid hydrobromide is made by heating selenourea with 6-bromohexanoic acid.
Patent GB-1048274-A (GB)
Title: Cation exchange resin
Inventor: HAY ALLAN STUART
IPC: C08G65/48
Filed: 1963-05-23
Abstract: The invention comprises polyphenylene ethers of formula <FORM:1048274/C3/1> where n is at least 10, m is a number which is an average for the molecule of from 0.01 to 2, Y is an acidic substituent, e.g. a carboxy, sulpho or phosphono group, and R is hydrogen or a halogen or a hydrocarbon, halohydrocarbon, hydrocarbonoxy or halohydrocarbonoxy radical. The polymers may be obtained by replacing the halogen atom(s) of polyphenylene ethers having halomethyl groups (see Specification 1,038,181) or by substitution in the methyl groups of methyl-substituted polyphenylene ethers. In examples poly[2,6 - di - (bromomethyl) - 1,4-phenylene ether] is reacted with potassium cyanide to replace some of the bromine atoms with nitrile groups which are then hydrolysed to carboxy groups, and with triethyl-phosphite to replace some of the bromine atoms with phosphoric acid groups, and poly(2,6-dimethyl-1,4-phenylene ether) is sulphonated with sulphuryl chloride.  The polymers may be used as cation exchange resins.
Patent GB-207481-A (GB)
Title: Improvements in travelers for ring twisting frames
IPC: D01H7/60
Filed: 1923-08-14
Abstract: 207,481. Gilligan, G. H. Aug. 14. 1923. Spindle apparatus. -A vertical traveller 9 for a ring twisting- frame comprises a vertical shank 11 provided with a concavity 12 and formed with an upper-lip 13 and a lower-lip 19. The upper-lip 13 comprises a horizontal portion 14 and a terminal portion 15 inclined downwardly, a hole 16 being bored centrally in the portion 14 and a guide-slot 17 arranged to extend from the hole 16 to the edge of the portion 15. The lower-lip 19 is formed with a horizontal portion 20 and an upturned portion 21. The thread 23, which passes through the hole 16, is thus maintained away from the face of the ring 7.
Patent GB-398986-A (GB)
Title: Improvements in manifolding apparatus
IPC: B41L7/08
Filed: 1932-07-22
Abstract: <PICT:0398986/III/1> <PICT:0398986/III/2> In apparatus for manifolding by impression of mirror script originals on moistened copy sheets, a liquid reservoir 3 has several valves 7 individually or conjointly adjustable for controlling the flow to several positions along the moistening felt 4.  Windows 8 are provided beneath each valve for observing the flow and the level in the reservoir may be seen through a window 18.  The felt is supported between two plates 13, 17. Downward movement of a pivoted lever 14 forces a projection 15 on the plate 13 along a cam 16 thus clamping the felt in position. The felt is released by upward movement of the lever, when a cam 14<1> thereon returns the pin 15.
Patent GB-275649-A (GB)
Title: Gyroscopic stabilizer
IPC: G01C21/18
Filed: 1927-08-05
Abstract: 275,649. Schueller, G. E. Aug. 5, 1926. [Convention date]. Gyroscopic apparatus.-Apparatus for stabilizing an instrument such as a searchlight, camera, &c. on an oscillating carrier such as a ship comprises two gyroscopes having their supporting pivots horizontal and at right-angles to each other, these pivots being connected by flexible &c. shafts to the pivot axes of a gimbal mounting supporting the instrument. In the form shown the gyroscopes 2, 3 have horizontal axes at right-angles to each other and are mounted in frames 4, 5 supported by pivots 6, 8 in standards 11, 13 secured to the deck 1. The instrument 22 is carried by gimbal rings 17, 19, the ring 19 being pivoted in brackets 15 secured to a support 14. One of the pivots 20 of the ring 19 is connected to one of the pivots 6 of the gyroscope 2 by a flexible shaft 27 and couplings 26, 28, and one of the pivots 18 of the ring 17 is similarly connected to one of the pivots 8 of the gyroscope 3. The flexible shafts may be replaced by telescopic shafts having universal couplings at their ends.
Patent GB-996152-A (GB)
Title: Semiconductor devices
IPC: H01L21/00
Filed: 1962-05-30
Abstract: 996,152. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 30, 1962 [June 30, 1961], No. 20756/62. Heading H1K. A semi-conductor device includes a body of semi-conductor material containing at least two activators characteristic of the same conductivity type, the total amount of activator being sufficient to render the material degenerate and the relative proportions of the activators being such that the average radius of the activator atoms and the mean radius of the atoms of the semi-conductor are matched to within 3%. In a typical device a tunnel diode is constructed from a germanium wafer degenerately doped with arsenic and antimony atoms in a ratio between 3:1 and 10: 1 (3À5 to 1 providing exact matching). An insulating layer 11 (Fig. 1b of quartz or silicon monoxide is evaporated on the wafer through a mask and an electrode 12 consisting of at least 98% by weight indium, balance gallium sputtered or evaporated over it. The assembly is then heated to alloy the electrode to the wafer at 14 to form a tunnel PN junction. After thermo-compression bonding wire 15 to electrode 12 and attaching an electrode 16 the wafer is etched to the form shown as described in Specification 996,151, The matching of the average impurity atom diameter with that of the semi-conductor reduces the valley current of the diode, and the particular combination of antimony and aresenic as impurities reduces, eliminates or reverses the variation of the peak current with temperature according to the ratio of antimony to aresenic atoms used.
Patent GB-148957-A (GB)
Title: Improvements in and relating to electrically driven vehicles
IPC: B60K1/00
Filed: 1920-07-10
Abstract: 148,957. Hansa-Lloyd-Werke, Akt-Ges. July 3, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Controlling-apparatus, arrangements of hand gear in conjunction with. - The various controls and the inspection meters of electrically-driven motor-vehicles having oblique steering columns, are arranged in a box or enlargement formed in the side wall of the vehicle adjacent to the driver's seat. Fig. 2 shows one example in which an ammeter or volt-meter 16, controlling handles 17, 18, and a driving resistance 19 are arranged in a box situated at the lefthand side of the driver. The door of the box opens outwardly from the vehicle. The handles are arranged on the lid at a convenient height for operation by hand.
Patent GB-729332-A (GB)
Title: Substituted 4-amino-toluenes
IPC: C07D295/13
Filed: 1952-08-21
Abstract: The invention comprises 4-aminotoluenes substituted in the 2-position by halogen, nitro or cyano, and in the amino group by aminoalkyl and, if desired, a further alkyl, aryl, aralkyl, cycloalkyl or aminoalkyl group.  The terminal amino group may be primary, secondary or tertiary, and in the last case may form part of a heterocyclic nucleus.  The products may be obtained in various ways.  In examples, 2 - chloro - 4 - aminotoluene gives 4 - dialkylaminoalkylamino products by reaction with b -diethylaminoethyl chloride and numerous similar compounds as hydrochlorides, and with b -bromoethylphthalimide, the 4-aminoethylamino-derivative after saponification; 2-bromo-and 2-iodo-substituted 4-aminotoluene derivatives are obtained by similar methods; 2-chloro-4-methyl or ethyl aminotoluene gives N-methyl- or ethyl-N-dialkylaminoalkyl derivatives with b -diethylaminoethyl chloride, b -bromoethyl-phthalimide, and other dialkylaminoalkyl-chlorides; other 2-chloro-4-alkylamino-toluenes give similar N-alkyl-N-dialkylaminoalkyl-derivatives, including the product 2 - chloro - 4 - (N - bis - b  - diethylaminoethyl) - aminotoluene; 2 - chloro - 4 - cyclohexylaminotoluene, and 2-chloro-4-(N-benzyl-amino-N-b -diethylamino-ethyl) amino-toluene are also specified; the N-benzyl-group may be substituted in o-, m- and p-positions by Cl and methyl; other products specified include 2-chloro-4-N-phenyl and methoxyphenyl-N-dialkylaminoalkyl-toluene; 2-chloro-4-toluidine is converted into the 4-b -hydroxylethylamino-derivative with glycolchlorhydrin, and thence to the 4-b -chloroethylamino derivative with thionyl chloride; this product reacts with a number of primary, and secondary amines, aminoalcohols and heterocyclic amines, and a b -dialkylamino-alkylamine, and gives corresponding N-substituted products; similar products are obtained by similar methods from 2-nitro and 2-cyano-4-aminotoluene.  Specification 433,625 is referred to.