baber/WOPTO huggingface dataset:
Patent GB-1461076-A (GB)
Title: Process for making carboxyl terminated polychloroprenes the polymers so made and compositions containing them
IPC: C08F4/28
Filed: 1974-01-16
Abstract: 1461076 Carboxyl terminated polychloroprenes BP CHEMICALS INTERNATIONAL Ltd 5 Sept 1974 [28 Sept 1973 16 Jan 1974] 45436/73 and 01949/74 Heading C3P A process for the production of fluid carboxy terminated polychloroprene comprises polymerizing chloroprene containing from 0 to 20%, by weight of chloroprene, of copolymerizable monomer or monomers in the presence of a peroxide initiator having two carboxyl terminal groups, the chloroprene being brought into contact initially with substantially all the peroxide initiator employed. Suitable comonomers are butadiene, styrene, acrylonitrile and 2,3-dichloro-1,3-butadiene. The polymerization is preferably carried out in the presence of a solvent, e.g. tetrahydrofuran, dioxane and ketones. Preferred peroxide initiators are glutaric acid peroxide, succinic acid peroxide and alkyl-substituted glutaric and succinic acid peroxides. The carboxyl terminated polymers may be suitably cured with polyepoxides, polyisocyanates, polyimines, polyamines, polyhydroxyls and metal oxide. Especially suitable are the diglycidyl ether of bisphenol A with 2,4,6-tri(dimethylaminomethyl) phenol and diisopropylsalicylates-Cr(III). Preferably however the chloroprene polymer may be stabilized by the addition of rosins and/or rosin acids, e.g. wood resin and rosin acid dimers. The Specification also relates to a curable polychloroprene comprising the carboxyl terminated polychloroprene, a compound having at least two epoxy groups, a tertiary amine epoxy-curing agent, and as co-curing agent a primary or secondary amine or a miscible dicarboxylic acid or anhydride. The tertiary amine epoxy-curing agent may be diethyl aniline, pyridine or 2-vinyl pyridine. Suitable amine co-curing agents are di-n-butylamine and N,N - di - sec - butyl - p - phenylene diamine. Referred di-carboxylic anhydrides are glutaric anhydride and maleic anhydride. Examples 1 to 6, 9 and 10 refer to processes comprising mixing together succinic acid peroxide, solvents selected from tetrahydrofuran, methyl ketone and dioxan and chloroprene optionally with butadiene (10%) whilst Examples 7, 11 and 12, use glutaric acid peroxide and dioxan. Examples 13 to 24 refer to the preparation of curable compositions from the carboxy terminated polychloroprene containing as curing agents: a mixture of the diglycidyl ether of bisphenol A and 2,4,6 - tri(dimethylaminomethyl) phenol (13, 14) and this mixture plus in addition glutaric anhydride (15-17), maleic anhydride (18, 19), di-n-butylamine (20, 21), and N,N-di-secbutyl-p-phenylenediamine (22, 23).
Patent GB-865964-A (GB)
Title: Electroluminescent device
IPC: H05B33/00
Filed: 1960-01-19
Abstract: 865,964. Electroluminescent devices. SYLVANIA ELECTRIC PRODUCTS Inc. Jan. 19, 1960 [March 20, 1959], No. 1963/60. Drawings to Specification. Class 39(1). An electroluminescent lamp comprises a sandwich structure including in the order named, a first light-transmitting electrode, a first solid light-transmitting electroluminescent layer, a second light-transmitting electrode, a second solid electroluminescent layer, and a third electrode, the current supply being connected to the first and third electrodes in common, and to the second electrode.
Patent GB-1139647-A (GB)
Title: Cephalosporin compounds
IPC: C07D501/36
Filed: 1966-01-17
Abstract: 1,139,647. Dithiocarbamate derivatives of Cephalosporin C. ELI LILLY & CO. 17 Jan., 1966 [18 Jan., 1965 (2)], No. 2076/66. Headings C2A and C2C. [Also in Division A5] The invention relates to derivatives of Cephalosporin C, wherein the acetoxymethyl group in the 3-position is replaced by an N- aminoalkyl-dithiocarbamate moiety, having the formula wherein R<SP>1</SP> is H, C 1  to C 7  alkyl, C 1  to C 7  alkoxy, C 1  to C 7  alkylmercapto, phenyl, phenoxy, phenylmercapto, thienyl, furyl, benzothienyl or benzofuryl; R<SP>2</SP> is C 1  to C 6  alkyl ; R<SP>3</SP> and R<SP>4</SP> are each C 1  to C 6  alkyl, or together with the N atom to which they are attached, form a pyrrolidino, piperidino, or morpholino group, containing up to 8 carbon atoms; and n is 2 or 3; and salts thereof with pharmaceutically acceptable cations. One or more of R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> may optionally be substituted by: e.g. halo, -OH, -NO 2 , alkyl, -CF 3 , CH 3 O-, CH 3 S-, -CN, HOCH 2 -, #-hydroxyethyl, acetyl, or acetamido. Cations forming the salts of the inventive compounds include Na, K, Li, Ca, Ba, Mg, Al, and NH 4 , and also organic bases such as methyl-, dimethyl-, trimethyl- and tetramethylammonium, choline, ethylammonium, procaine, quinine, and dibenzylethylenediamine. The compounds are prepared by reacting a cephalosporin C, of formula wherein A is H or -CO-CH 2 -R<SP>1</SP>, with an N- aminoalkyl dithiocarbamate, to replace the acetoxymethyl group in the 3-position by the dithiocarbamate moiety: and, when A is H, acylating the product to introduce the required acylamido group in the 7-position. The reaction is suitably carried out with alkali metal salts of the reactants in aqueous solution at pH 7À5-8À0, the inventive product being obtained as its betaine. The products may be salted out of the reaction solution with sodium chloride, purified by dissolving in chloroform and washing with aqueous sodium chloride solution, diluting the chloroform phase with a non-solvent such as ether and crystallizing. Sodium N-aminoalkyl dithiocarbamates, listed as follows, are prepared by reacting, in aqueous solution, sodium hydroxide and the appropriate amine with carbon disulphide: sodium N- methyl - N - (2<SP>1 </SP>- dimethylaminoethyl)-; - (2<SP>1</SP> - diethylaminoethyl)-;- (2<SP>1</SP> - di n - propylaminoethyl)-; -(2<SP>1</SP>-morpholinoethyl)-; -(3<SP>1</SP>-diethylaminopropyl)-; and - (3<SP>1</SP>-piperidinopropyl)-dithiocarbamate; sodium N-ethyl-N-(2<SP>1</SP>-diethylaminoethyl)-dithiocarbamate, and sodium N-npropyl - N - (2<SP>1 </SP>- diethylaminoethyl) - dithiocarbamate.
Patent GB-492806-A (GB)
Title: Improvements in or relating to reducing valves
IPC: G05D16/06
Filed: 1937-01-25
Abstract: 492,806. Pressure-regulating valves. EYRE, J. R. Jan. 25, 1937, No. 2107. [Class 135] A pressure regulator has parts of the actuating member loaded by supplementary springs in series with the main springs tc give a high lift to the valve for a small pressure variation. In the form shown a simple lift valve member 10 is actuated by a differential diaphragm, the upper side of the smaller diaphragm 17 being sub ject to inlet pressure to balance the valve while outlet pressure is admitted to the cham ber between the diaphragms. The large] diaphragm 18 is back ed by a central disc 31 coupled by a spin dle 15 to the valve member 10 and by one or more annular rings 33. Shoulders are formed on the disc, rings and casing to limit the relative movements of these parts. The annular ring is loaded by a pair of springs 41 connected to a cross-head 37 engaging a spherically faced washer 36 resting on the ring. An additional loading spring 40 is arranged between the central disc and a cross-head 38 connected by pillars 39 to the cross-head 37. The single diaphragm may be replaced by a pair of diaphragms each supported by a single bucking member.
Patent GB-506440-A (GB)
Title: Improvements in or relating to soaking pits
IPC: C21D9/70
Filed: 1938-01-21
Abstract: 506,440. Soaking-pit furnaces. STEIN & ATKINSON, Ltd., and ATKINSON, J. S. Jan. 21, 1938, No. 2124. [Class 51 (ii)] The cover 2 of a soaring-pit 1 is rotatasbly mounted on rollers 3 which move on a rumway 4 and carries at its outer end a plate 5 which depends and moves in a trough 6 containing sand. The cover is provided with an aperture 7, which is closed by a lid 8 provided with a sand &c. seal 9. The lid may rest on a seat 10 or may be mounted to move on runways on the cover 2 or may be mounted on a pair of parallel arms. Several apertures may be provided in the cover 2 which may be rotated by a wheel 12 engaging a rack 13 in the cover and driven by gearing 14 from a motor 15. The pit and/or the cover may be of circular, hexagonal, square or other shape and the cover may move on rollers or balls.
Patent GB-112842-A (GB)
Title: Improvements in Machines for Cutting Light Metallic Scrap.
Inventor: WARD THOMAS WILLIAM
IPC: B23D31/00
Filed: 1917-02-17
Abstract: 112,842. Ward, T. W., and Lash, H. W. Feb. 17. 1917. Breaking; expanding and stretching; shearing; shear-blades.-Light scrap metal which is to be compressed and bundled in machines such as are described in Specifications 23633/94, 1598/11, and 6827/13 is cut and torn in apparatus comprising three or more pairs of toothed or fluted rollers a, a<1>, b, b<1>, c, c<1> and a rotary cutter d which coacts with a fixed cutter e. In one form, the rollers a, a<1> have longitudinal and circumferential V-grooves, the second pair b, b<1> which are of larger diameter and higher peripheral speed than the first pair, and, therefore, tear the metal between the pairs of rollers, have longitudinal V- grooves, and the third pair c, c<1>, which are of larger diameter and higher peripheral speed than the second pair, have also longitudinal V-grooves of smaller pitch than the second pair. The cutter d has helical cutting edges with recesses between them. The material is guided through the machine by plates g, g<1>, g<2>. The rolls are driven by gearwheels.
Patent GB-524186-A (GB)
Title: Improvements in and relating to methods and apparatus for equalizing the variations in pressure of gases at high temperature
IPC: F02C5/12
Filed: 1939-01-24
Abstract: 524,186. Gas turbines. HOLZWARTHGASTURBINEN AKT.-GES. Jan. 24, 1939, Nos. 2427 and 2428. Convention dates, Jan. 24, 1938, and Dec. 19, 1938. [Class 110 (iii)] , In a multi-stage gas turbine using one or more pressure-equalizing chambers 9 between stages, these are placed in the exhaust pipe 11 to prevent a great heat loss to atmosphere. Gases from a combustion chamber 1 pass through nozzles 6 to the first-stage blades, and at first the volume is too great to pass through the second stage nozzles 7, some gases in consequence passing into the chambers 9. After closure of the outlet valve 5, from the chamber 1, gases from 9 flow back to the nozzles 7 and through the blades of the second rotor. Heat exchangers, or steam superheaters, may be placed around the chambers 9. Fig. 5 shows a modification, the chambers 9 being at the bottom, and gases flowing into them in the form of gas pistons to the limiting position shown. Air or cool gas contained in the surrounding space 24 protects the walls of 9 from the hot gases. A scavenging air valve 12 and an outlet valve 13, for the chamber 1, are opened simultaneously.
Patent GB-113010-A (GB)
Title: Improvements in Spinning Copper Oxide Ammonia Cellulose Solutions.
Inventor: ELSAESSER EMIL
IPC: D01F2/04
Filed: 1917-02-19
Abstract: 113,010. Elsaesser, E. Feb. 19, 1917. Ammoniacal copper cellulose solutions, making filaments from, processes for; apparatus for making filaments.-In spinning threads from ammoniacal-copper cellulose solutions in a flowing precipitation bath, air is removed from the liquid of the bath by evacuation and heating, in order to prevent the formation of air bubbles on the threads.
Patent GB-136696-A (GB)
Title: Improvements in and relating to Ignition-magneto Generating Devices.
IPC: H02K21/18
Filed: 1919-01-31
Abstract: 136,696. Marks, E. C. R., (Splitdorf Electrical Co.). Jan. 31, 1919. Inductor machines.-In an inductor-alternator for V-type engines, the magnetic arms 18 - - 21 on the rotor 3 are unequally spaced. Mounted on the base 1 are the magnets 2 and the bearings 5, 6 for the shaft 4 of the rotor 3. Pole-pieces 9, 10 mounted on the base 1 carry the core 11 of the primary and secondary coils 12, 13, and a condenser 14 which, together with the coils 12, 13, can be readily removed. The angle between the magnetic arms 18, 19 is 180‹- x/2 where x is the angle between the engine cylinders. The interruptor comprises a cam 22 operating on a fibre block 23 carried by an arm 24 having a contact 25 co-operating with a contact 26 which is earthed. For connecting the sparking-plugs S, S' alternately to the coil 13, a distributor is employed comprising a lever 27 mounted on a pin 28 and adapted to be oscillated by a cam 29 on the spindle 4. Metal strips 30, 33 on the lever 27 are adapted to connect the pins 31, 32 or the pins 34, 35. These pins are mounted in a fibre block which is removable with the coil and condenser. To advance or retard the spark, the fibre bush 40 carrying the contacts 25, 26 may be rotated. In a modification, the magnetic arms 18 - - 21 are all the same size in cross-section.
Patent GB-1036062-A (GB)
Title: Optical projector
Inventor: SELIGER WALTER
IPC: G02B1/00
Filed: 1963-01-21
Abstract: 1,036,062. Reflex projectors. PENTACON DRESDEN KAMERA-UND KINSWERKE Veb. Jan. 21, 1963, No. 2544/63. Headings G2H and G2J. In a reflex projector, non-parallel light from lamp 2 and condenser 3 is partially reflected at half-silvered mirror 4 on to opaque original 5 at which it is reflected back through the mirrors through the projection lens 6 on to screen 7. The fraction of light transmitted through the mirror 4 is totally absorbed by matt black surface 8. The original 5 may be produced by electro-photographic means and may have a selenium surface and the re-emitted light determines the projected image brightness. For back projection on ground glass screen, a further mirror may be provided in front of lens 6. A conventional transparency projector may be adapted to the above system by fitting objective 6 and slide holder 10 to housing 9 which has an auxiliary lens 11.
Patent GB-485905-A (GB)
Title: Process for protecting an article made of a tarnishable metal such as silver
IPC: C25D5/10
Filed: 1937-03-11
Abstract: 485,905. Electroplating. ETABLISSEMENTS MARRET, BONNIN, LEBEL, & GUIEU. March 11, 1937, No. 25797. Convention date, March 11, 1936. Divided out of 480,145. [Class 41] An article of tarnishable metal such as silver is coated electrolytically with yellow gold and then with a thin layer of rhodium in order to produce a white reflecting surface ; the layer of yellow gold permits the article to resist chemical agents which may penetrate the pores of the rhodium layer.
Patent GB-291077-A (GB)
Title: Improvements in or relating to date indicators
IPC: B42D5/04
Filed: 1928-01-26
Abstract: 291,077. Schumacher, H., and K÷nneker, K. May 27, 1927, [Convention date]. Date - indicators.- Relates to calendars or date indicators of the type in which the dates are on a band and are led past an aperture, and consists in employing the band in the form of a loose unmounted roll 8 stored in a box 10 secured to the calendar base board 2, from which box the band is drawn past an aperture 4 exhibiting one, say the advertisement, side, round a guide rod 13 and back past a second aperture 6 to exhibit the other side with the date. Rear walls 12 facilitate the movement.
Patent GB-624032-A (GB)
Title: Improved method of and apparatus for the production of porous clinkers
IPC: F27B9/16
Filed: 1947-01-28
Abstract: 624,032. Porous compositions. BOMGREN, A. F. Jan. 28, 1947, No. 2617. Convention date, July 5, 1946. [Class 70] [Also in Group XII] Porous clinker for use in the manufacture of light concrete is obtained by heating dried, granulated slate, slate-clay or other shale or clay evolving gas when heated, first slowly in a vertical shaft 1 to about 800‹ C. and then rapidly to about 1200‹ to 1300‹ C. when spread as a thin layer. The shaft furnace may deliver on to the rotating hearth 5 of an annular tunnel furnace 7, the rate of discharge through a feeding channel 3 and the rate of rotation of the hearth being such as to provide a layer of material in which the grains lie free from one another, The furnace 7 is heated as by oil burners near the discharge end so that the material is subjected to increasing temperature by the gases which then heat the shaft furnace. The clinker coated with a glaze layer is discharged by a conveyer 9 and associated scraper which may be cooled.
Patent GB-192604-A (GB)
Title: A device for the protection of pneumatic tyres for automobiles and other purposes
IPC: B60C19/12
Filed: 1922-01-28
Abstract: 192,604. Besson, M., and Nouzarede, F. Jan. 28, 1922. No Patent granted (Sealing fee not paid). Tread bands; jackets and covers.- A protecting device fitted over a pneumatic tyre comprises a leather band 2 to which is riveted an armouring 3 of sheet metal plates, an outer rubber tread 4 being riveted to the edges of the armouring and of the leather band. Hooks 5 on the leather band engage the flanged edges of the wheel felloe.
Patent GB-1084764-A (GB)
Title: Improvements in or relating to ironing machines
IPC: D06F69/00
Filed: 1965-01-21
Abstract: 1,084,764. Ironing machines. G. VERCAMMEN. Jan. 21, 1965 [Feb. 20, 1964], No. 2713/ / 65. Heading D1A. An ironing machine in which the articles for ironing are placed on a continuously driven conveyor 3 on which they are engaged by an ironing plate 21 which moves in a closed path, part of that movement being in engagement with the articles to be ironed. A rigid plate 2 is mounted beneath the upper run of conveyor 3 which can be of bronze foil carrying felt. The moving parts are driven by a shaft 4 whose speed may be varied. Above conveyer 3 aligned frames 6 carry a continuously driven shaft 8 carrying a gear 14 meshing with a gear 15 secured to a shaft 17 carrying fly wheels 16 with aligned crank pins 19 carrying connecting rods 20. The ends of rods 20 pass through holes 29 in the ends of a bar 28 and have nuts threaded thereon above and below bar 28 to limit the movement of bar 28 on rods 20. Suspended from bar 28 by threaded studs 21a surrounded by springs 27 is ironing plate 21 which is heated by steam or electricity. Damping means 23 precede the ironing means. As fly wheels 16 rotate, the ironing plate will be carried down and along with the conveyer so that, when ironing takes place, the springs are at maximum compression.
Patent GB-578662-A (GB)
Title: Improvements in and relating to files or like tools
IPC: B23D71/00
Filed: 1944-02-14
Abstract: 578,662. Files and rasps. DREVER, P. K. Feb. 14, 1944, No. 2717. [Class 61 (ii)] In a file or rasp of the type comprising a plurality of cutting' blades, which in their cutting position are assembled in or on a rod member at right angles to the latter, and can be inclined relatively to the rod for sharpening, the blades are positioned by means of two separate elements having similarly inclined plane surfaces located in contact in one position, and one element is removable laterally .to be placed at the other end of the file to locate the blades in the other position. A blade, having apertured rectangular blades 4, Fig. 1, secured to a spindle by a nut 9, comprises two wedges 6, Fig. 5, which are mounted together on the spindle, adjacent a collar 2, to form a rectangular block which locates the blades 4 at right angles to the spindle. For sharpening the file, one wedge 6 is removed laterally and replaced adjacent the collar 8, Fig. 3, the angles of the wedges 6 being such that the cutting planes on one side of the file become co-planar. A rib 10 on each wedge 6 co-operates with a groove 11 in the collars 2 or 8 to secure the wedges against unintentional displacement. One wedge 6 may be constructed integral with the spindle. To prevent unintentional rotation of the blades, two further spindles may be threaded through the blades, one each side of the main spindle. In a modification, the spindle or spindles may be replaced by a holder comprising a pair of longitudinal channels into which fit projections provided on the cutting blades.
Patent GB-1069794-A (GB)
Title: Toy mechanisms
IPC: A63H29/20
Filed: 1965-01-21
Abstract: 1,069,794. Toy guns. W. L. STRAUSS. Jan. 21, 1965 [Feb. 6, 1964], No. 2765/65. Heading A6S. A toy, e.g. a vehicle or a human figure, has wheels which when rotated operate a striker against a strip of caps guided on to a striker plate. In the tank shown, the wheels 5, through a train of gears, rotate an eccentric cam 35 which withdraws the striker cyclically against tension of a spring 33 and rapidly releases it against a striker plate 30. A coil of caps 43 is at the same time fed step by step to the striker plate by a claw 60 which is moved up and down by the said cam 35.
Patent GB-844546-A (GB)
Title: Improvements in or relating to magnesium base alloys
Inventor: UNSWORTH WILLIAM
IPC: C22C43/00
Filed: 1958-01-28
Abstract: Thorium is alloyed with magnesium or magnesium-base alloys by mixing with the molten metal or alloy pellets made from a mixture of 10-50 parts by weight of magnesium or magnesium-base alloy powder and 100 parts of thorium fluoride powder.  The mixture may contain up to 20% by weight of one or more of the following metals or fluorides of these metals: zirconium, zinc, manganese, base earth metals, silver, indium, beryllium.  Before addition to melt the pellets may be heated in an inert atmosphere to effect reaction between the magnesium and thorium fluoride and give the pellets the following composition by weight:- p   .Thorium.44-63% .Magnesium fluoride.23-33% .Thorium fluoride.0-33% .Magnesium.0-23% Specifications 652,224, 652,226, 652,227 and 667,405 are referred to.
Patent GB-674524-A (GB)
Title: Improvements in or relating to prevention of color during esterification
IPC: C07C29/16
Filed: 1950-02-03
Abstract: In the esterification of dicarboxylic acids with OXO alcohols in reaction vessels having metal surfaces exposed to the reaction mixture, the formation of colour due to sulphur-containing impurities in the reactants is prevented by the presence of one or more oxides or acids of phosphorus or salts of such acids in an amount equal to 0.00005-1.5 per cent by weight of the alcohol. Orthophosphoric acid (85 per cent) is preferred, but meta- and pyro-phosphoric, ortho- and pyro-phosphorous, hypophosphorous and hypophosphoric acids and the corresponding oxides and salts are also effective.  The dicarboxylic acid or its anhydride may be used for the esterification, and the process may be carried out in iron, steel or stainless steel vessels. Examples show the production of octyl phthalates using as colour inhibitors orthophosphoric acid, metaphosphoric acid, orthophosphorous acid, phosphorous pentoxide and the three sodium orthophosphates. Comparative figures are given of the depth of colour of the esters when esterification is carried out with and without an inhibitor.  C7-C9 OXO alcohols and maleic acid are also specified as reactants.
Patent GB-425333-A (GB)
Title: Improvements in and relating to gasholder tanks
IPC: F17B1/007
Filed: 1934-04-10
Abstract: 425,333. Gas holders. HILLER, H. K., 39, Victoria Street, London. April 10, 1934, No. 2859. [Class 54] The annular water tank A of a gas holder encloses a storage chamber B having a domed roof C extending above the water level of the tank and formed of substantially the same curvature as the roof N of the top lift. When the top lift is in its lowest position the roof of the storage chamber causes the expulsion of all gas in the holder. When repairs are to be effected inside of the holder air is pumped into the holder and the holder is entered through an air lock F. The tank A may be erected on pillars H carried by a ring foundation G, access to the storage chamber being provided by openings L. One of the gas inlet and outlet pipes E, O may be formed by the central column supporting the domed roof C.