baber/WOPTO huggingface dataset:
Patent GB-893912-A (GB)
Title: Process and composition for the manufacture of epoxy-resins
IPC: C08G59/68
Filed: 1960-01-27
Abstract: Substantially linear 1:2-epoxy resins of high molecular weight are made by reacting 1,2-epoxy resins having a molecular weight from about 250 to about 1,000 with a dihydric phenol in the presence of a lithium salt as catalyst.  Specified starting materials are methyl-9:10:12:13-diepoxy stearate, the dimethyl ester of 6:7:10:11-diepoxyhexadecane-1:16-dicarboxylic acid, diethylene glycol bis(3:4 epoxy-cyclohexane carboxylate), 3:4-epoxy-6-methylcyclohexyl-methyl-3:4-epoxy-6-methyl cyclohexane carboxylate and 3:4-epoxycyclohexyl methyl-3:4-epoxycyclohexane carboxylate, diglycidyl adipate, diglycidyl phthalate and the reaction products of epichlorohydrin or dichlorohydrin with ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, butylene glycol, polyethylene glycols, polypropylene glycols, pentane-1:5-diol, hexane-1:6-diol, resorcinol, pyrocatechol, hydroquinone, 1:4-dihydroxynaphthalene, bis-4(hydroxyphenyl)-methane, bis-(4-hydroxy phenyl) methyl-phenyl-methane, bis-(4-hydroxyphenyl)-tolyl-methane, 4-41-dihydroxy-diphenyl, bis-(4-hydroxyphenyl)-sulphone and bis-phenol A.  The phenols listed above are also employed in the process of the invention.  Specified lithium salts are lithium carbonate, disodium lithium phosphate, lithium oxalate, lithium bis-phenolate and lithium chloride.  In the Examples: (1) to (3) an epoxy resin made from bis-phenol-A and epichlorohydrin is reacted with bis-phenol A in the presence of lithium chloride, lithium dietate, lithium carbonate, lithium acetate and disodium lithium phosphate; (4) and (5) 3, 4-epoxy-6-methylcyclohexyl methyl 3, 4-epoxy-6-methyl cyclohexane carbonate is reacted in the presence of lithium chloride with (4) bis-phenol-A and (5) resorcinol; (6) an epoxy resin made from polypropylene glycol and epichlorohydrin is reacted with resorcinol in the presence of lithium chloride and (7) butane diol diglycidyl ether is reacted with bis-phenol-A in the presence of lithium chloride.  The products of the invention may be cured by reaction with amines and polycarboxylic anhydrides.
Patent GB-192913-A (GB)
Title: Improvements in or relating to railway signalling apparatus
IPC: B61L7/02
Filed: 1922-02-02
Abstract: 192,913. Williams, L. W. Feb. 2, 1922. Levers.-A bell-crank. for use with railway switches is formed of relatively thin metal, and is strengthened by plates A<6>, Fig. 2, or straps E' Fig. 4, preferably electrically welded to the arms A. The plates A<6> may overlap the sides of the arms A. Bosses C are electrically welded to the plates A<6> or the arms A. The crank may be mounted on a pin B<2>, Fig. 1, either integral with a boss B<1> or shouldered and welded to the boss and to a plate B. The wearing surfaces may be case-hardened.
Patent GB-242833-A (GB)
Title: Method of and apparatus for regenerating bulky waste metal
IPC: B02C18/12
Filed: 1925-02-03
Abstract: 242,833. Marks, E. C. R., (Magnet-Werk Ges.). Feb. 3, 1925. Mills and apparatus.-Bulky waste metal such as tin cans and boxes, enamelled metal articles &c. is disintegrated or comminuted into small parts for successive collection from a number of collecting points and transportation to a main collecting depot or place where the metal is to be reclaimed, by a machine B mounted on a vehicle A. The disintegrating machine B is preferably as shown and described in Specification 238,350 in which the waste material is compressed, bent, cracked, twisted and squeezed between arms on a rotating knife head and stationary knives arranged around the inside of a hopper and is finally cut up between knives carried on the rotating head and the stationary knives mentioned. The apparatus shown is adapted to be driven from the engine b of the vehicle through gearing and a clutch d. Several mechanically-coupled vehicles may be provided of which one or more is equipped with disintegrating apparatus, adapted to be driven by electric motors by power obtained from a dynamo driven by a car engine.
Patent GB-643539-A (GB)
Title: Method of forming coated surfaces
Inventor: CLEMENTS PETER GRAHAM
IPC: B05D7/22
Filed: 1948-02-03
Abstract: The interior surface of a hollow article, including a pipe or tube, is coated by introducing polythene, cellulose acetate-butyrate, polystyrene or shellac in powder form into the interior of the preheated article, distributing the powder over the surface, e.g. by rotating or rocking, removing the surplus powder and continuing the heating until the coating material flows and forms a homogeneous smooth layer.  The powder, which should pass a 60-mesh B.S. sieve, may be introduced by sprinkling or application through a sieve.  A flame from a spray pistol may be used to supply the heating.  More than one coating may be applied and the process may be effected in an inert atmosphere. Anti-oxidants, e.g. di-o-cresylol-propane and pigments, e.g. titanium dioxide, chrome yellow, cadmium red or cobalt blue may be added.
Patent GB-468398-A (GB)
Title: Improvements in or relating to apparatus for diathermy and the like
IPC: A61N5/00
Filed: 1936-02-03
Abstract: Apparatus for diathermy and the like comprises a generator of electric oscillations of a predetermined high frequency, a pair of leads forming a substantially uniform transmission line connecting the generator to load terminals, and an R.M.S. high frequency voltmeter connected across the leads at a distance a quarter wave length from the load terminals.  The reading of the voltmeter in this position is stated to be a measure of the current through the patient.  Preferably a thermal voltmeter connected to the leads through condensers and calibrated is employed.  The leads may be concentric or parallel with one another.  The voltmeter may be connected across the generator output terminals, the leads being then made a quarter of a wave length long.
Patent GB-231621-A (GB)
Title: Improvements in the manufacture of lac
IPC: C09F1/00
Filed: 1924-02-08
Abstract: 231,621. Barber, T. W. Feb. 8, 1924. No Patent granted (Sealing fee not paid). Resins.-White or bloached lac instead of being formed into thick hanks is pressed, as by rollers or a press, and formed into thin sheets, strips or threads. The process eliminates the contained acidulated water and thus prevents deterioration, and renders the product easily soluble witho@t further crushing.
Patent GB-946204-A (GB)
Title: Improvements in or relating to conveyors and the like
IPC: B65G41/00
Filed: 1959-01-30
Abstract: 946,204. Screw conveyers. G. L. I. FELBER, and J. SILVER. May 2, 1960 [Jan. 30, 1959 (2)], Nos. 3503/59 and 3509/59. Heading B8A. The casing 1 of a mobile screw conveyer 2 is pivotally mounted on a horizontal rod 13 projecting from a vertical sleeve 12 which is slidably mounted on a pillar 11 borne by a wheeled carriage 10. The position of the sleeve is adjusted by a chain hoist 21. Stabilizing rods 22 are pivotally connected to the casing 1 and to the carriage 10. The driving motor is supported by a bracket 14 which is carried by and projects from the opposite side of the sleeve, and comprises a pair of parallel rails 15 which support a pair of parallel tubular members 16. One of the members 16 is secured to the sleeve by a strut 17 and the other is constructed to slide upon the rails. Collars 18 slidably mounted on the member 16 and lockable in any position carry bolts to which the motor is secured. One, or more, of the collars is connected by a link 19 to an operating arm 20. The movement of the arm controls the tension of the belt 27 by which the drive is transmitted to a pulley 24 fast on the conveyer shaft 2. The belt passes round a pair of pulleys 25 inclined at an angle to each other and located substantially tangentially of the pitch circle of the pulley 24.
Patent GB-1472705-A (GB)
Title: Waste handling apparatus
IPC: B02C23/32
Filed: 1975-01-28
Abstract: 1472705 Separating refuse; impact pulverizers, comminuting refuse BAUER BROS CO 28 Jan 1975 [31 Jan 1974] 3632/75 Headings B2A and B2H An apparatus for separating a mixture of various types of solids e.g. refuse, into its components comprises a housing defining a plurality of intercommunicating chambers and a rotatable shaft 30 extending through the housing. The mixture is fed through a hopper 92 into the first chamber 42 where it is mixed with heated air supplied by a conduit (18) and comes into contact with sprirally arranged lugs 68 on the rotating shaft 30. The lugs fling the solids outwardly so that the heaviest of them e.g. fragments of metal, pass through an opening 98 at the top of the chamber 42 into an annular chamber 96 from which they may be discharged via a door 104 to a conveyor 106. The lighter solids pass from the chamber 42 to a chamber 52 having a roughened wall surface 53 and a perforate wall 109. A rotating cutter-beater assembly 76 comprising six spokes 78 each of which has attached to its end a triangular cutter element 80 and a beater bar 82, pulverises the friable plastics and glass materials in the chamber 52 until they are small enough to pass through the perforate wall 109 to a conveyor 112. Paper- and cardboard products are shredded and pass from the chamber 52 to a chamber 54 via an annular opening defined by the outer edge of a baffle 86 and a projected edge of the wall 56 of the chamber 54. Fibrous material which passes through the perforate wall 109 is sucked into the chamber 54 along a duct 114 by a fan 90 which draws a stream of air through the chambers 42, 52 and 54. Ozone or chlorine may be introduced into the chamber 54 through a nozzle 121. The fibrous material leaves the housing through a conduit 16 and is removed from the air stream in a cyclone (12). The air is directed back to the inlet to the chamber 42 along a conduit (18) Fig. 1 (not shown).
Patent GB-1463552-A (GB)
Title: Dampening control circuit for off-set printing apparatus
IPC: B41F33/00
Filed: 1974-01-25
Abstract: 1463552 Controlling dampening PITNEY-BOWES Inc 25 Jan 1974 [26 Jan 1973] 03640/74 Heading B6C [Also in Division G3] The amount of dampening liquid on a roller 18, Fig. 2, in a lithographic press is monitored to produce a signal which if in the normal operating range, controls the operation of a motor 60 which drives the damping train, or if the roller 18 is excessively dry, operates a motor 122 which speeds up the drive. In a preferred embodiment, an A.C. source 23 produces an excitation signal on line 40; detector roller 20 and oscillator roller 22 are both electrically conductive so that an impedance signal is fed to amplifier 24 this signal providing an indication of the amount of liquid on roller 18. Zener diode 70 conducts only when the signal exceeds a certain threshold value and operates motor 60, which drives pan roller 54 through a ratchet drive 62 and via cam 58, the movement of ductor roller 56 between the pan roller 54 and oscillator roller 22. If the signal on line 28 is representative of excessive dryness, e.g. on start-up of the press, diode 70<SP>1</SP> conducts and operates motor 122, to speed-up pan roller 54 through one-way clutch 124 and shaft 63, thus over-riding the ratchet drive from motor 60; however, motor 60 continues to actuate the movement of the ductor roller 56. A control network 36 provides pulses at regular intervals to detect the absence of the rapid wetting signal and terminate the drive through motor 122 to prevent excessive wetting of roller 18.
Patent GB-1087647-A (GB)
Title: Novel steroid compounds, and processes for their preparation
IPC: C07J71/00
Filed: 1965-07-22
Abstract: Novel 16 - hydroxymethylene - estra - 1,3,5(10) - triene - 17 - ones of the general formula <FORM:1087647/C2/1> wherein R4 is a hydrogen or halogen atom, or an alkyl group; R5 is a halogen atom or a hydroxy or alkoxy group, R6 is a hydrogen atom or a hydroxy group, there being optionally a 9(11)-double bond, provided that, when R5 is an alkoxy group, R4 or R6 is a substituent group or there is a 9(11)-double bond, are obtained by reacting the corresponding estra-1,3,5(10)-trien-17- one of the general formula <FORM:1087647/C2/2> with a formylating and with an enolizing agent, e.g. with ethyl formate and sodium hydride.
Patent GB-1511463-A (GB)
Title: 1-acylamino methyl-1,2,3,4-tetrahydroisoquinolines
IPC: C07D405/12
Filed: 1976-01-30
Abstract: 1511463 1 - Acylaminomethyl - 1,2,3,4- tetrahydroisoquinolines MERCK PATENT GmbH 30 Jan 1976 [1 Feb 1975] 03740/76 Heading C2C The invention comprises a process for preparing 1-acylaminomethyl-1,2,3,4-tetrahydroisoquinolines which are unsubstituted in the 2-position, wherein a monoacid addition salt of a 1 - aminomethyl - 1,2,3,4 - tetrahydroisoquinoline unsubstituted in the 2-position is reacted with a derivative of a carboxylic acid in the presence of an organic base which is more weakly basic than the desired product. The invention also includes novel compounds of the Formula II wherein R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP>, which may be the same or different, are hydrogen or methyl, R<SP>5</SP> and R<SP>6</SP>, which may be the same or different, are hydrogen, methyl or methoxy, R<SP>7</SP> is hydrogen or -COCH 2 X, where X is chlorine, bromine or iodine and R<SP>8</SP> is cycloalkyl, cycloalkenyl, methyl cycloalkyl, hydroxycycloalkyl or oxocycloalkyl, each with 4 to 7 carbon atoms as ring members, or phenyl substituted once or twice by acylamino containing up to 4 carbon atoms or nitro or a thienyl, tetrahydropyranyl or tetrahydrothiopyranyl and, when at least one of the radicals R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>, R<SP>5</SP>, R<SP>6</SP> or R<SP>7</SP> is other than hydrogen, R<SP>8</SP> can also be phenyl optionally substituted once or twice by amino, halo, hydroxy, methoxy or pyridyl, and physiologically compatible acid addition salts thereof, which may be prepared by the above process, optionally followed when R<SP>7</SP> is hydrogen by interconverting the residues at R<SP>8</SP> with a reducing agent, and/or reaction with Y-COCH 2 X where Y is halo or R<SP>8</SP>CO to form a compound II in which R<SP>7</SP> is -COCH 2 X, and/or acid addition salt formation from base and viceversa, and/or racemate separation. The compounds II in which R<SP>7</SP>#H may be used to prepare compounds of the Formula V which are anthelmintically-effective compounds. 1 - Aminomethyl - 1 - methyl - 1,2,3,4 - tetrahydroisoquinoline is prepared by hydrogenation followed by hydrolysis of 1-methyl-2-benzoyl- 1,2-dihydroisoquinoline-1-cyanide. The optical isomers of 1-aminomethyl-1,2,3,4- tetrahydroisoquinoline are separated from the racemate using tartaric acid. The racemate is prepared by hydrogenation of 1-cyano-2- acetyl - 1,2 - dihydroisoquinoline, followed by hydrolysis. Pharmaceutical compositions of the compounds II with the usual excipients show anthelmintic, analgesic, cardiac and circulatory activity when administered orally, topically or parenterally.
Patent GB-1373476-A (GB)
Title: Doorhandle assemblies
Inventor: BUSSE R
IPC: E05B1/00
Filed: 1973-01-25
Abstract: 1373476 Door handle assembly D VOLL MANN [trading as VOLLMANN & SCH MELZER] 25 Jan 1973 [25 Jan 1972] 3779/73 Heading E2A  A door handle assembly comprises two handles joined together by a spindle 16, Fig. 1, annular escutcheons 22, 22 which, in use, support the handle assembly, each handle having a core 10 and a pair of shells 24, 25, the former shell having projections 27 which are received by socket members 28 on the latter shell to retain the shells on the core. Each core 10 receives the spindle 16 therein, each end of which is provided with teeth 17 and is passed into an aperture 15 of a block 14 which is mounted in a cavity 12 of the respective handle. The spindle end is retained by a wedge 19 which is driven into a recess 18 in the block 14, holes 30 of the latter receiving a peg 29 of the respective shell. The core 10 is also provided with cavities 13, 13a which receive protrusions 26, 26 therein of the respective shell and has extension 20, 20, each pair of which receive a disc 21 thereon. Each disc 21 carries an escutcheon 22. In modifications the spindle 16, Fig. 6, is provided with screw threads 16a and is retained in the respective handles by nuts 114, shells 224, 225 Fig. 5, are held together by screws 33, and projections 127, 128, Figs. 7 and 8, having extensions 31, and received in respective slots 32 so as to retain the shells on the core.
Patent GB-557577-A (GB)
Title: Electric snap action switch
IPC: H01H37/60
Filed: 1941-05-27
Abstract: 557,577. Snap-action switches. ARROW ELECTRIC SWITCHES, Ltd., May 27, 1941, No. 3790/43. Convention date, June 14, 1940. Divided out of 557,543. [Class 38 (v)] In a snap-action switch having an operating lever 50 pivoted at 52 and connected by a dead centre spring 56 to a contact arm 58 pivoted at 60, the 'fixed' contact member comprises a spring 68 which in the open position of the switch bears against a stop 70. In the 'opening' operation, the contacts are both moving when the spring 68 strikes the stop 70, so that a quick break is effected. The lever 50 is shown operated by a thermal device described in Specification 557,576. Specifications 334,928 and 496,483 are referred to. Reference has been directed by the Comptroller to Specifications 334,928, [Class 38 (v)], and 496,483.
Patent GB-740764-A (GB)
Title: Improvements in fractionating towers for the vacuum distillation of heavy hydrocarbon oils
IPC: B01D3/16
Filed: 1953-02-12
Abstract: In order to withdraw a liquid sidestream from a plate-type fractionating tower, the tower is provided, below one of the plates 2, with an annular baffle 25 having an up <PICT:0740764/III/1> standing cylindrical flange 26 which has an opening through which liquid flows down into a pan 21 which is designed and mounted so that it is spaced apart from the walls of the tower; and the liquid is withdrawn from the pan through a conduit 24 passing through the wall of the tower.  The opening in the baffle is provided with a dependent lip 27.  The pan shown, which is circular and has a sump 23, is freely supported on I-beams 22. The liquid is thereby collected and withdrawn without entrainment in the vapours passing up the tower. The tower shown is suitable for the fractionation under vacuum of the residue left after distillation of a petroleum oil at atmospheric pressure.  In this case, part of the liquid withdrawn through line 24 is supplied to the top of the tower, as cooling liquid, through line 10.  Drawoff conduit 24 is provided with a valve 24a controlled by differential pressure controller 28 which is connected both to conduit 24 and the tower.  The tower is built-up from four sections A, B, C, and D.  Section A contains bubble cap plates 2, and is supplied with condensing liquid through line 1).  Section B, which is provided with disc and doughnut elements 3, 4, is used as a vapour-washing section to remove entrained residual liquid; washing liquid being supplied through line 7 to the upper surface of disc 3, and being collected in pan 31 and withdrawn through line 8.  Section C is a flash zone which is supplied through inlet-line 5 with the material-to-be-fractionated after it has been heated in a pipe still (not shown).  Section D is a stripping section which is provided with plates 6, and is supplied with stripping steam through line 12. Uncondensed vapours are withdrawn from the top of the tower through conduit 9, and residual liquid is withdrawn from the base through line 11.  Liquid entrainment may also be removed by wire-mesh screens between sections C and B, and between sections B and A.
Patent GB-886948-A (GB)
Title: Boron hydride derivatives
IPC: C10L1/30
Filed: 1960-02-04
Abstract: A liquid propellant, which may be used as such or blended with hydrocarbon fuels for reaction motors or for jet engines, comprises the oily addition product of a boron hydride and a vinyl compound of formula ViaRbBe, VicRdAl or VieRfSi wherein Vi is a vinyl group, R represents hydrogen or a hydrocarbon group and a=1 or 2, b=1 or 0, c=1, 2 or 3, d=2, 1 or 0, e=1, 2, 3 or 4 and f=3, 2, 1 or 0.ALSO:A boron hydride derivative suitable for use as a rocket fuel comprises the monomeric or polymeric addition product of a boron hydride and a vinyl compound of the formula <FORM:0886948/IV (a)/1> wherein Vi is a vinyl group, R represents hydrogen or a hydrocarbon group (e.g. methyl, ethyl, phenyl, benzyl or octyl) and a = 1 or 2, b = 1 or 0, c = 1, 2 or 3, d = 2, 1 or 0, e = 1, 2, 3 or 4 and F = 3, 2, 1 or 0. The boron hydrides include diborane, tetraborane, pentaboranes (9 and 11), hexaborane and decaborane and mixtures thereof; alkyl boron hydrides may also be used and these may be prepared by allowing a mixture of diborane and a trialkylborane to come into equilibrium. The addition reaction may take place in a solvent such as tetrahydrofuran or a hydrocarbon, e.g. n-pentane.  The beryllium, aluminium and silicon compounds used in the examples are usually the di-, tri- or tetravinyl derivatives respectively, but certain compounds are used in which a vinyl group is replaced by a hydrogen atom or methyl group; mixtures of the beryllium, aluminium and silicon compounds may also be used.  Polymeric products may be formed when the boron hydrides contain at least two hydrogen atoms which are active in the addition reaction and where the vinyl compounds contain at least two vinyl groups.  The use of the tri- and tetravinyl compounds can lead to cross-linked polymers. Polymerization of the monomeric addition products and/or cross-linking of the polymeric products may also take place through vinyl groups in the presence of u.v. light or polymerization catalysts, e.g. benzoyl peroxide. Specifications 795,772, 824,944 and 878,130 are referred to.ALSO:The invention comprises monomeric (or polymeric-see Group IV (a)) addition products of a boron hydride and a vinyl compound of formula ViaRbBe or VicRdAl [The a, b, c and d are subscripts] wherein Vi is a vinyl group, R represents hydrogen or a hydrocarbon group and a=1 or 2, b=1 or 0, c=1, 2 or 3 and d=2, 1 or 0.  The boron hydrides mentioned include diborane, tetraborane, pentaboranes (9 and 11) hexaborane and decaborane and mixtures thereof; alkyl boron hydrides may also be used and these may be prepared by allowing a mixture of diborane and a trialkylborane to come in to equilibrum.  The addition reaction may take place in a solvent such as tetrahydrofuran or a hydrocarbon, e.g. n-pentane.  The beryllium and aluminium compounds used in the examples are usually the di- and tri-vinyl derivatives, respectively, however a vinyl group may be replaced by a hydrogen atom or methyl group; mixtures of the beryllium and aluminium compounds may also be used.  Specificatioins 795,772, 824,944 and 878,130 are referred to.
Patent GB-632151-A (GB)
Title: Improvements in d.c. amplifying systems involving a conversion to a.c.
IPC: H03F3/387
Filed: 1946-02-08
Abstract: 632,151. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., and OWEN, C. E. Feb. 8, 1946, No. 4032. [Class 38 (ii)] In a D.C. amplifier in which the D.C. input is successively converted to A.C., amplified in a thermionic valve amplifier and converted to D.C. the first stage is performed by a voltage dependent resistance or resistances subjected to an auxiliary A.C. voltage. The third stage may also be carried out by a similar resistance or resistances rendered phase selective by an auxiliary D.C. voltage. Suitable circuits for D.C.-A.C. conversion are shown in Figs. 1-3 (Prov.), wherein 1, 2, 5 and 6 are voltage dependent resistances and 3, 4 are ordinary resistances. The D.C. input is applied across A, B and the auxiliary voltage across C, D, the A.C. output being taken through a condenser from A, B. Various wave forms for the auxiliary A.C. voltage are referred to, e.g. the resultant of two square waves phase displaced 90 degrees or an interrupted high frequency wave. The amplified A.C. may be converted by circuits shown in Figs. 12 and 16 (Prov.) and Figs. 1 and 2 (Comp.).