baber/WOPTO huggingface dataset:
Patent GB-183800-A (GB)
Title: New or improved means for changing the speed of the rollers of churn-kneaders
IPC: A01J15/06
Filed: 1922-03-07
Abstract: 183,800. Silkeborg Maskinfabrik Zeuthen & Larsen. July 29, 1921, [Convention date]. Stationary batch-mixers with rotary stirrers.- A churn kneader is provided with change-speed gearing for driving the kneading rollers at different speeds for each speed of rotation of the barrel. The barrel 1 is fitted with a journal 3 having fixed thereon a gear wheel 22 in mesh with a loosely-mounted gear 17 integral with a gear 18 meshing in turn with a gear 10 secured to a shaft 9. The shaft 9 is fitted with a pair of clutches 11, 12 and has mounted thereon a sleeve on which are fixed the driving-pulley 15 and a gear 14. The gear 14 is in mesh with a gear 20 fixed to a sleeve 21 having a gear 19 secured thereon, the gear meshing with a gear wheel 13 on the clutch 11. With the clutch 12 in operation, the shaft 9 is driven directly from the pulley 15. When the clutch 11 is thrown into operation the shaft is driven through the train of gears 14, 20, 19, 13. The rollers 2 are driven from a central gear 4 on a shaft 7 passing through the journal 3 and having thereon loosely-mounted gears 23, 24 and a clutch 26 by means of which they can be clutched to the shaft. The gears 23, 24 mesh with gears 28, 29 secured to a sleeve 27. The gear 24 is secured to a gear 25 in mesh with the gear 20. The speed of the rollers is varied by the operation of the clutch 26. In a modification, the gear wheel 14 is driven from the pulley 15 through a two-speed gear.
Patent GB-1195883-A (GB)
Title: Apparatus for De-Aerating Powders.
Inventor: BYE-JORGENSEN HANS-JORGEN
IPC: B65B63/02
Filed: 1967-02-13
Abstract: 1,195,883. Sacking powder material. SACK FILLERS Ltd. 12 Feb., 1968 [13 Feb., 1967], No. 6736/67. Heading B8C. [Also in Divisions B1-B2] Powder is de-aerated by falling from spreader G through a chamber C which is maintained at reduced pressure by vacuum pump E. Positive displacement powder pumps A, H, deliver and remove powder to and from the chamber, and the settled powder may be further deaerated by stirrer I. Pump E draws air through a pair of stone or plastics, tubular filters F 1  and F 2 , which are used alternately, a changeover valve operating every few hours or several times per second, and the filter which is not under vacuum being connected to atmosphere or to a compressed-air line to back-flush it. Pump E may be controlled by the power absorption of pump H to ensure uniform powder density. Pump H delivers de-aerated powder to a weighing machine or to a container such as an impervious sack.
Patent GB-267540-A (GB)
Title: Improvements in aerials suitable for short wave signalling
IPC: H01Q11/04
Filed: 1927-03-10
Abstract: 267,540. Soc. Franþaise Radio-Electrique. March 10, 1926, [Convention date]. Aerials for short-wave directive signalling comprise single wires or layers of wire bent substantially through a right angle at each half wave length. The complete aerial may have the serrated form shown in Fig. 2, the stepped form of Fig. 8, or may comprise combinations or variations of these forms. The aerial may be set up in a vertical position and earthed, Fig. 2, or it may be placed in horizontal, vertical, or inclined position and not earthed. With the aerial arranged as shown in Fig. 2, the verticallypolarized wave (that due to radiations from the vertical aerial sections) is a maximum along the earth's surface in a direction perpendicular to the plane of the aerial and is negligible at any substantial angle of elevation as indicated by the shaded area in Fig. 3. The horizontally-polarized wave (due to radiation from the horizontal aerial sections) is zero along the earth's surface in a direction perpendicular to the plane of the aerial, and has a series of increasing maxima at successive angles of elevation, as indicated by the dotted loops of Fig. 3. For radiation in the plane of the aerial, the dotted lines of Fig. 3 indicate the strength of the vertically-polarized wave for different angles of elevation of the observer. The net effect is that radiation is to a large extent concentrated along a line perpendicular to the plane of the aerial. The horizontally-polarized wave may be eliminated by using a pair of aerials similar to that of Fig. 2, but reversely arranged, with their horizontal sections adjacent to and nullifying each other. The second aerial may be energized directly or by induction from the first aerial. Another form of complex aerial shown in Fig. 7 comprises a modified main aerial 1, 1<1> shown in full lines, a similar reversely-arranged aerial 2, 2<1> shown in dotted lines, and a number of auxiliary induced aerials 3, 3<1> - - 5, 5<1> arranged to nullify radiation from the horizontal sections. Fig. 9 shows another form comprising main aerials 1, 1<1> and 2 2<1> each of stepped form, and a number of induced aerials 3, 3<1> - - 5, 5<1> by which it is stated that either the horizontally or the vertically polarized waves may be eliminated. For convenience of description the aerial sections have been referred to as horizontal or vertical, but in practice the aerial and its sections may be inclined. For example, the stepped aerial of Fig. 8 may be placed in a horizontal or in a vertical position, with its sections inclined at 45‹ to the ground; along a line perpendicular to the plane of the aerial the radiation is in the first case vertically polarized, and in the second case horizontally polarized. Some of the bends may be in a plane at right angles to the main plane of the aerial, thus forming a system in three dimensions.
Patent GB-214966-A (GB)
Title: Improvements in and relating to means for regulating the supply of feed water to a boiler
IPC: F22D1/46
Filed: 1924-03-17
Abstract: 214,966. Muchka, J. April 28, 1923, [Convention date]. Addition to 189,093. Feed-water, supplying and controlling.-In feed-water supply systems for locomotives and the like, of the kind in which means are provided for regulating the feed delivery in accordance with the position of the engine valve gear, as described in the parent Specification, an injector or a centrifugal or like pump in which the suction is always in communication with the delivery is used as a feed pump, regulation being effected by a valve in the suction or delivery pipe. The injector 4 operated by exhaust steam draws water from the feed-tank and delivers it into a condenser 10, from which it is withdrawn and forced into the boiler by a pump 11. A valve 7 in the water supply pipe 5 is operated by links connected to the engine reversing shaft.
Patent GB-236493-A (GB)
Title: Improvements in typographical composing and line casting machines
IPC: B41B11/06
Filed: 1925-03-13
Abstract: 236,493. Linotype & Machinery, Ltd., (Mergenthaler Setzmaschinen Fabrik Ges.). March 13, 1925. Magazines and escapements.-In machines having an adjustable column of magazines, the escapement-reeds and the magazine-entrance are simultaneously moved out of engagement with the magazine by means of a three-armed lever, of which one arm b is formed as a cam and is adapted to act on the pivoted guide m of the. escapement-reeds m, the second arm c is connected by a link t to the magazine-entrance d and the third arm a serves as a handle.
Patent GB-394934-A (GB)
Title: Improvements in means for regulating by transformers the distribution of wattless and load currents in ring mains
IPC: F16D3/72
Filed: 1933-03-07
Abstract: 394,934. Supply systems. I N T E R - NATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) March 7, 1933, No. 6929. Convention date, March 7, 1932. [Class 38 (iv).] Boosting by transformers.-An arrangement of transformers for adjusting the load and wattless currents in a ring main 1 independently by means of a boosting transformer 2 comprises two transformers 3, 4 having their secondary windings in series and producing voltages mutually displaced by 90 degrees, connected in series with a transformer 6 giving a voltage so displaced in phase that one component of voltage supplied by one of the first-mentioned transformers, say 3, and intended for regulation of load currents is displaced from the phase of the network voltage by the angle of impedance of the ring main. Tap changing on the transformer 3 thus adjusts the load current distribution between the two halves of the ring, and on the transformer 4 the wattless current distribution. The transformer 6 may be in series with the primary circuit 9 ; it may be regulable in respect of phase angle. The transformer shown is a mesh connected autotransformer but other types such as a rotary transformer (or induction regulator) may be employed. A switch 10 may be used to shortcircuit the excitation of the transformer 2 when the regulating transformers 3, 4 are in the zero position.
Patent GB-1389662-A (GB)
Title: Biological test
IPC: G01N33/50
Filed: 1971-03-16
Abstract: 1389662 Test for carcinogenic activity B R RABIN and D J WILLIAMS 1 March 1972 [16 March 1971] 6963/71 Heading G1B A substance is tested for carcinogenic activity by a method comprising contacting the substance in the presence of reduced nicotinamide adenine dinucleotide phosphate with isolated cell membranes having masked rearrangase activity, and after a predetermined interval of time, testing the membranes for rearrangase activity by determining their ability to reactivate inactive randomly oxidized ribonuclease by measuring the amount of active ribonuclease produced. The membranes may be rat endoplasmic reticulum in the form of rough membranes (which have attached ribosomes) or smooth membranes having ribosomes bound thereto . A carcinogen detaches the ribosomes and the rearrangase thus exposed is assayed, for example by reaction with reduced then randomly oxidized ribonuclease, when the reactivated ribonuclease is determined by measurement of its ability to hydrolyse cytidine-2', 3' - phosphate with consequential change in pH or O.D. of the system. The "rough" membrane to be used is distinguished from "smooth" membrane by its RNA protein ratio. RNA is determined by incubation of a membrane suspension with 3N KOH, admixture of 2.2N perchloric acid and measurement of the O.D. of the supernatant; protein is determined by incubation of a membrane suspension with alkaline copper sulphate - alkali tartrate solution, addition of phosphomolybdo-tungstic acid solution and measurement of the O.D. at 750 MÁ. There is a reference to use of soybean trypsin inhibitor instead of ribonuclease in determination of the rearrangase.
Patent GB-738323-A (GB)
Title: Substituted bis-5-pyrazolones
Filed: 1953-03-13
Abstract: The invention comprises (1) bis-pyrazolones of the formula <FORM:0738323/IV (b)/1> where R is hydrogen, alkyl, phenyl or substituted phenyl and R1 is alkyl or aralkyl of the benzene series; (2) bis-pyrazolones of the above formula where R1 is hydrogen and R is methyl or p-(p-tert.-butyl-phenoxy)-phenyl; (3) the preparation of compounds (1) by heating a 3-amino-5-pyrazolone, optionally substituted in the 1-position, with a primary alkylamine or aralkylamine; and (4) the preparation of compounds p  (1) where R1 is hydrogen by heating a 3-amino-5-pyrazolone, optionally substituted in the 1-position, with ammonia or a primary alkylamine or arylamine. The reaction is preferably carried out at 70-200 DEG  C.  Reactions (3) and (4) usually occur simultaneously giving a mixture of products.  Examples show the production of the following compounds of the above formula: R = phenyl, R1 = hydrogen, ethyl, n-butyl, n-pentyl and benzyl; R = p-(p - t - butylphenoxy) - phenyl, R1 = hydrogen; R = methyl, R1 = hydrogen and n-butyl.  The compounds (R1 = H) may be N-acylated with acid halides to give e.g. the compound R = phenyl, R1 = m - (p - t - amylphenoxy)-benzoyl.  Other suitable starting materials are specified (which can be made by the processes of Specifications 547,064 and 599,919) in which R is additionally hydrogen, ethyl, m-tolyl, 3 : 5-dimethylphenyl, p - phenoxyphenyl, o - chlorophenyl, 2 : 4 : 6 - trichlorophenyl, o - hydroxyphenyl and o-sulphophenyl, and R1 is additionally methyl, n-propyl, isopropyl, sec.-butyl, t-butyl, sec.-amyl, t-amyl, n-hexyl, n-heptyl and n-octyl.  Specification 636,988 also is referred to.
Patent GB-506449-A (GB)
Title: Improvements in or relating to coke oven doors
IPC: C10B25/12
Filed: 1938-03-07
Abstract: 506,449. Coke-oven doors. KOPPERS CO. March 7, 1938, No. 7101. Convention date, March 6, 1937. [Class 123 (i)] A coke-oven door 19 is, pressed against its seating 22 by flexible and resilient crossbars 28 which engage hooks 15 on the door frame. A cross-bar may be a leaf spring held in compression between a channel casing 29 and a yoke 30 which bears against a bracket 25 on the door. The spring is compressed and removed by the mechanism described in Specification 506,448, [Group XII]. A spring m'ay be held in a yoke which is rotatably mounted on the door bracket to allow the ends of the spring to be brought into engagement with the door hooks, the spring being then compressed. by rotating a crank carrying a screwed stud engaging the front of the yoke.
Patent GB-547543-A (GB)
Title: Improved control mechanism for reversible internal combustion engines
IPC: F01L13/00
Filed: 1941-06-10
Abstract: 547,543. Starting ; reversing. AKTIEBOLAGET GOTAVERKEN. June 10, 1941, No. 7344. Convention date, May 18, 1940. [Class 7 (v)]  In a reversible engine having a control shaft 42 movable in either direction from a neutral position for reversing, starting and fuel control, pressure-medium valves 30, 32 actuated by cams on the shaft 42 cause adjustment of the valve gear for forward or reverse running respectively, and a valve 31 actuated by the further movement of the shaft in either direction supplies compressed air to starting valves on the engine cylinders. The valves 30 .. 32 are supplied with compressed air from a main valve 28 and are actuated by cams 55, 56 pivoted upon a disc 43 on the shaft 42. The valves 30, 32 are connected to the ends of a cylinder 49 in which is a piston 48 acting through a rack 47 and pinion 46 on a shaft 9 carrying eccentrics 8 on which are pivoted valve levers 5-7 actuating the engine inlet and exhaust valves 2, 3 and fuel pump 4. A cranked slot 50 in an extension of the rack engages an arm 52 on the cam shaft 11, so that actuation of the piston 48 lifts the valve levers, displaces the cam shaft and lowers the valve levers on to the alternative set of cams. Subsequent actuation of the valve 31 by the cam 55 or 56 admits air through a conduit 35 and beneath a piston 34 opening a valve supplying air through conduits 36, 37 to starting valves 38 controlled by cam-actuated distributers 25. Each cam 55, 56 has a groove 63, 64 allowing it to ride over the stem 60 or 62 of the other valve, and is connected by a light spring 57, 58 to enable it to move freely about its pivot on the return of the control shaft to neutral position. Further movement of the shaft in either direction beyond the starting position adjusts the fuel pump by means of a link 65 connecting a crank 44 to an arm 66 on a shaft 67. The turning of the shaft 42 in a wrong direction is prevented by a lever 69 co-operating with an abutment member 68 on the shaft; the lever is connected by a link 71 and bell-crank 72 to the rack 47.
Patent GB-672397-A (GB)
Title: Improvements in structures of windows or doors
IPC: E05F17/00
Filed: 1950-03-23
Abstract: 672,397. Windows, doors. PERSSON, E. S. March 23,1950 [March 10, 1950], No. 7350/50. Class 20(iii) A window structure comprises two or more outer casements and two or more inner casements, each outer casement being coupled with an inner casement so that the casements swing in synchronism in opposite directions, the coupling means being mounted above and/or below the casements to leave a free space between them. As shown in Fig: 6, opposed casements 42 are coupled by arms 26, 28 having end pins 60. which slide in grooves 29 in a plate 58 on the casement frame 10 the arms 26, 28 being pivoted at 62 and meshed together at. 64. A lever 68 is arranged to engage the teeth 64 and lock the casements in. any desired position. Boxlike compartments 84, Fig 8, may be provided in the upper and lower window frame members to accommodate either a folded blind 40, Fig 6, in which case channel parts 72 are provided, or a venetian blind, (not shown).. The blind when fitted extends in the space which is still left between the casements when they are closed. The; arms 26; 28 in this case are pivoted by means of pins 92 supported in flanges 88, 90 extending, laterally from the boxes 84. Coupling means between the pivots 92 are housed in the space between a box 84 and its corresponding window frame supporting member. In a modification, Fig. 3, the coupling means comprises a pair of arms 30, 32 each of which is pivoted at one end to a casement, the other ends of the two arms being joined by a pin 36 which is slidable in a groove 38 formed in the window frame. Casements 12, 14 may be locked respectively to casements 16, 18 when they are in the closed position.
Patent GB-771549-A (GB)
Title: Synthetic resin coating compositions
IPC: C09D167/08
Filed: 1955-03-14
Abstract: A liquid coating composition is made by mixing a pigment, a solvent, a melaminealdehyde resin modified by a saturated aliphatic monohydric alcohol containing from 1 to 4 carbon atoms and an alkyd resin, the weight ratio of melamine resin to alkyd resin being from 15 : 85 to 40 : 60; the alkyd resin (1) being modified with 30 to 40 per cent by weight of coconut oil or coconut oil fatty acids, (2) containing unesterified hydroxyl groups in an amount equivalent to 4 to 8 per cent by weight of glycerine based on the weight of the modified resin, and (3) having an acid number of 9-16.  The alkyd resin may be made by reacting together (a) a polybasic acid or anhydride, e.g. phthalic acid, phthalic anhydride or isophthalic acid, (b) a polyhydric alcohol, e.g. glycerine, sorbitol, pentaerythritol or ethylene glycol and (c) coconut oil or coconut oil fatty acids. In an example, an alkyd resin made from glycerine, phthalic anhydride and coconut oil in the presence of litharge, methanol and xylol and a melamine resin made from formaldehyde, melamine and butanol, are mixed in the presence of titanium dioxide, butanol and hydrocarbon solvents and sprayed on to a panel and then baked.  Pigments specified are metal flakes, metal oxides, hydroxides, chromates, silicates, sulphides, sulphates and carbonates, carbon black, organic dyestuffs and lakes, e.g. titanium dioxide, milori blue, yellow lead chromate and flake aluminium.  Other solvents, e.g. aromatic hydrocarbons, alcohol, ketones and esters may be used to dissolve the resin components. The compositions may be applied by spraying, brushing, dipping and roller coating and baked to hard insoluble coatings. Specification 631,479 is referred to.
Patent GB-682140-A (GB)
Title: Improvements in volume control arrangements for radio receivers
IPC: H03F3/48
Filed: 1951-03-29
Abstract: 682,140. Valve amplifying circuits. AMALGAMATED WIRELESS (AUSTRALASIA), Ltd. March 29, 1951 [Sept. 27, 1950], No. 7357/51. Classes 40 (v) and 40 (vi). The volume control in the input circuit of the low-frequency amplifier of a receiver is arranged such that variation of over one part of its range reduces the input voltage to the amplifier and variation over the remaining part provides an increasing amount of negative feedback from the output of the first valve of the amplifier to the volume control, the arrangement further being such that the voltage derived from the preceding part of the receiver and applied to the amplifier is nowhere reduced to zero. The Figure shows a reflex amplifier in which the I.F. or R.F. signal is applied through a circuit 9 to the grid of the valve, the resulting output being fed through a circuit 16 to a diode detector 17. The diode load comprises a resistor 25, the upper part of a potentiometer 26 and a resistor 27, and the slider on the potentiometer feeds the low-frequency signal back to the grid to produce an amplified output across an anode load 21 for application through a capacitor 32 to the succeeding amplifier valve. A capacitor 34 applies negative feedback from the load to the lower end of the potentiometer and as resistor 27 is relatively low in value substantially no feedback is effective while the slider is on the upper half of the potentiometer so that movement over that part of its range only reduces the level of the signal derived from the diode applied to the grid. Over the lower part of its range, however, the signal derived. from the diode remains constant and the negative feedback is varied. Resistor 27 is large enough to ensure that the signal voltage even at the tap swamps the distorted output due to the demodulation of the high-frequency signal caused by the non-linearity of the amplifier. Resistor 38 prevents self-oscillation due to phase change in the negative feedback loop caused by inadequate screen grid decoupling at low frequencies, but the resistor may be omitted since oscillation will occur at frequencies outside the audio range and will bias back the valve and reduce the audio output. A separate diode load may be provided and the tapped potentiometer connected through a capacitor across this load, in which case phase change in the feedback loop is reduced, and a bias for the amplifier valve may be applied to resistor 27. Specification 633,430 is referred to.
Patent GB-1255575-A (GB)
Title: Method for producing polymers of ethylene
IPC: C08F10/00
Filed: 1970-02-16
Abstract: 1,255,575. Polymerizing ethylene. CHISSO CORP. 16 Feb., 1970 [21 Feb., 1969], No. 7411/70. Heading C3P. Ethylene may be polymerized in the presence of a catalyst comprising (1) an organo aluminium compound and (2) a second reaction product obtained by reacting a transition metal compound below 110‹ C. in the presence of an aromatic compound with a first reaction product obtained by reacting a hydroxide of a Group II metal with a trivalent metal halide below 110‹ C. Specified hydroxides are magnesium and calcium hydroxides; trivalent metal halides are aluminium and ferric chlorides; aromatic compounds are toluene, xylene, mesitylene, durene, dimethyl aniline, nitrobenzene, chlorobenzene, o-dichlorobenzene, anisole and phenols; transition metal compounds are titanium tetrachloride, vanadium tetrachloride, vanadium oxytrichloride, chromyl chloride and titanium tetra-n-butoxide ; and organo aluminium compounds are trimethyl and triethyl aluminium, ethyl aluminium sesquichloride, diethyl aluminium chloride and ethyl aluminium dichloride. Ethylene may be copolymerized, e.g. with propylene, butene - 1,3 - methylpentene - 1,4- methylpentene - 1, hexene - 1, heptene - 1 and styrene; optionally in the presence of an inert hydrocarbon solvent. Examples describe the polymerization of ethylene in hexane in the presence of hydrogen and catalysts formed from triethyl aluminium, magnesium hydroxide, aluminium trichloride, titanium tetrachloride and (1) toluene (2, 6 and 7) xylene (3) anisole (4) dimethylaniline and (5) o-chlorotoluene; from triethyl aluminium, calcium hydroxide, ferric chloride, titanium tetrachloride and (8) toluene; and from triethyl aluminium, magnesium hydroxide, aluminium trichloride, xylene and (10) tetra n-butoxy titanium ; and the sequential polymerization of propylene and ethylene with a catalyst as in (1).