baber/WOPTO huggingface dataset:
Patent GB-702606-A (GB)
Title: Method of polymerizing vinyl aromatic compounds with rubber
IPC: C08F279/02
Filed: 1951-05-09
Abstract: Thermoplastic interpolymers are made, e.g. continuously, by forming a solution of from 85 to 99 parts by weight of a monomeric mixture containing at least 75 per cent. of a monovinyl aromatic compound and from 1 to 15 parts of a natural or synthetic rubber, heating the solution at a temperature between 60 and 150 DEG  C. until from 10 to 40 per cent. has been interpolymerized while at the same time agitating the mass with a shearing action so that linear interpolymers are obtained and continuing the heating at a temperature between 90 and 200 DEG  C. until the polymerization of the monomeric material is complete.  The polymerization may be effected in the presence of a polymerization catalyst such as benzoyl peroxide, lauroyl peroxide, or di-t-butyl peroxide or a polymerization modifier such as lauryl mercaptan, di-isopropyl xanthate or methallyl phosphate.  The polymerizable mixture may include lubricants such as butyl stearate or soyabean oil.  The synthetic rubber is selected from polyisoprene, polybutadiene, butadiene-styrene copolymers, butadiene-acrylonitrile copolymers, and butadiene-methyl isopropenyl ketone copolymers.  Specified monomers are styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, m-ethylstyrene, p-ethylstyrene, p-isopropylstyrene, o-chlorostyrene, p-chlorostyrene, o, p-dimethyl styrene, o- and p-diethylstyrenes, alpha-methyl styrene, methyl-alpha-methyl styrene, dimethyl-alpha-methyl styrene, ethyl-alpha-methyl styrene, isopropyl-alpha-methyl styrene, chloro-alpha-methyl styrene, dichloro-alpha-methyl styrene, chloro-methyl-alpha-methyl styrene, acrylonitrile, methyl isopropenyl ketone.  The product may be ground to a granular form and moulded.
Patent GB-331911-A (GB)
Title: Improvements in the scavenging and exhausting of internal combustion engines
IPC: F02B3/00
Filed: 1929-04-09
Abstract: 331,911. Seiliger, M. Feb. 15, 1929, [Convention date]. Two- and four-stroke-cycle engines; cylinders, ports of; pumps, centrifugal.-In two or four stroke cycle engines the scavenging air admission ports are used as auxiliary exhaust ports at the commencement of the exhaust period. As applied to a double-acting engine with main central main exhaust ports 3, the scavenging air admission ports 4 lead from a chamber with upper and lower valves 8, 9; with the valve 8 open exhaust passes out through the ports 4 to the pipe 6. At the end of the power stroke the valve 8 closes and the valve 9 opens scavenging air being then admitted to the cylinder from the pipe 7. If desired an additional air charge at a higher pressure than the scavenging air can be admitted through valves 12 which may be open a variable amount. The invention can be applied to engines with valve controlled inlet and exhaust ports and to engines having oppositely-moving pistons in each cylinder, one piston controlling the main exhaust ports and the other the combined auxiliary exhaust and scavenging air ports. As shown the valves 8, 9 are worked by one cam but they may be worked from independent cams and the time of opening of the valves is variable. The ports 4 may be longer than the ports 3. The scavenging and additional air charge may be supplied by independent pumps or by a two stage pump, the first stage supplying the scavenging air and the second the additional air.
Patent GB-555403-A (GB)
Title: Improvements in and relating to noise suppression circuits for radio receivers
IPC: H03G3/28
Filed: 1942-08-07
Abstract: 555,403. Wireless receiving circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 7, 1942. No. 11035. Convention date, Aug. 20, 1941. [Class 40 (v)] A frequency modulation receiver has amplitude limiting means for removing amplitude modulation only so long as a predetermined limiting level is exceeded, and means responsive to amplitude modulation in waves transmitted through the limiting means for disabling subsequent portions of the receiving channel. Fig. 1 shows the invention applied to a frequency modulation receiver comprising input stages 10 ... 12 feeding an I.F. amplifier 14 and first limiter 15. This feeds a second limiter 16, frequency detector 17 audio amplifier 72 and output stages 19, 20. The limiter 16 comprises a pentode 30 self biased by capacity 31 and resistance 32, and having a tuned output circuit 35. The anode 36 also feeds a diode 51 which develops potentials across a load 52 in accordance with amplitude modulation components in the output of the limiter 16. These potentials are fed to a second diode 54 through a capacity 55 and low pass filter 56, 57 which remove direct current and intermediate frequencies. Diode 54 feeds a load 58 and low pass filter 59, 60 so as to feed a negative bias on the grid 70 of the audio amplifier 72. In the absence of an adequate carrier signal input to limiter 16, this bias, due to rectified noise voltages, is sufficient to bias valve 72 to cut-off. The provision of an adequate carrier input to the limiter 16 reduces the noise output of the limiter so as to unblock valve 72 and allow normal reproduction of the frequency modulation signal. In a modification, Fig. 2, (not shown), the first stage of detection of the noise voltages is effected by grid power detection in the pentode 30, the first diode 51 being dispensed with.
Patent GB-268158-A (GB)
Title: Improvements in the separation and purification of vanillin
IPC: C07C47/58
Filed: 1926-04-27
Abstract: 268,158. Tcherniac, J. April 27, 1926. Vanillin.-In purifying vanillin, an aqueous solution of the sodium bisulphite compound is prepared and is treated either to salt out the compound or to convert it into a less soluble compound by decomposition with another salt. For example, a solution of the sodium bisulphite compound obtained in the ordinary way may be saturated with sodium chloride, the bisulphite compound crystallizing out on cooling; aluminium chloride also is stated to produce a salting-out effect. Alternatively, the solution of the sodium bisulphite compound may be warmed and treated with a potassium salt, such as the chloride, preferably in amount equivalent to the scdium present; in this case the potassium bisulphite compound is obtained on cooling. The crystallized compounds are separated, washed, and decomposed with acid, and the mother liquors are returned to the process.
Patent GB-619515-A (GB)
Title: Organic mercury compounds and process for preparing same
IPC: C07F3/10
Filed: 1946-04-11
Abstract: Sulphur-containing organic mercury compounds of the general formula <FORM:0619515/IV(b)/1> wherein R represents hydrogen or an alkyl radical containing not more than 6 carbon atoms, X is a monovalent group selected from the acyclic, carbocyclic and heterocyclic series or a monovalent inorganic group, Y is a divalent group selected from the acyclic, carbocyclic and heterocyclic series and Z is a solubilizing substituent selected from the group consisting of -SO2M and -COOM in which M represents an alkali or alkaline earth metal, are prepared by reacting an organic mercury compound having the formula <FORM:0619515/IV(b)/2> wherein R and Y have the above significance, with an organic or inorganic sulphur containing compound of the general formula Q-S-X, wherein Q is hydrogen or an alkali metal, X has the above significance and Z has the above significance or is a SO3H or COOH group when Q represents an alkali metal, e.g. by adding the sulphydryl compound to an aqueous solution of the mercury containing compound.  Suitable compounds of the general formula Q-S-X are sodium thiosulphate, potassium ethyl xanthate, sodium thioacetate, sodium thioglycollate, ethyl thioglycollate, the sodium salt of cysteine, sodium thiosalicylate, thiophenol, thiourea, N-methyl thiourea, thioacetamide, thiouracil and sodium thiobarbiturate.  Where the compound of the formula Q-S-X contains a carboxylic group, it is preferable to prepare the alkali, alkaline earth, ammonium, substituted ammonium or alkylene diamine salt of the sulphur containing compound before adding it to the solution of the mercury compound.  The preferred sulphur containing mercury compounds include the group <FORM:0619515/IV(b)/3> where R has the above significance, and where such groups as <FORM:0619515/IV(b)/4> are attached to the end carbon atom, and where such groups as <FORM:0619515/IV(b)/5> are attached to the end sulphur atom.  In examples, N - (gamma - hydroxy - mercuri - beta - methoxy - propyl) - D - alpha - camphoramic acid is reacted with sodium thioglycollate, thiobarbituric acid, sodium thiosulphate, thiophenol, potassium ethylxanthate, thiourea, cysteine, or ethylene diamine thioglycollate, ortho - N - (gamma - hydroxy - mercuri - beta - methoxy - propyl)-carbamyl phenoxy-acetic acid is reacted with thioacetamide, or sodium thioglycollate, N - (gamma - hydroxy - mercuri - beta - methoxy - propyl) succinuric acid is reacted with ethyl thioglycollate, 2-carboxy-3-N-(gamma-hydroxy-mercuri-beta-hydroxy-propyl)-carbamyl pyridine is reacted with sodium thioglycollate and N - (gamma - hydroxy - mercuri - beta - ethoxy - propyl) - D - alpha - camphoramic acid is reacted with thiobarbituric acid.  The sample furnished under Sect. 2 (5) comprises the di-sodium salt of ortho-(gamma-carboxymethyl - mercapto - mercuri - beta - methoxy)-propyl phenoxy-acetic acid and is prepared by reacting sodium ortho (gamma-hydroxy-mercuri-beta-methoxy)-propyl phenoxy-acetate and sodium thioglycollate.
Patent GB-399241-A (GB)
Title: Manufacture of vat-dyestuffs
IPC: C09B1/48
Filed: 1932-04-19
Abstract: Vat dyes of the general formula:--  <FORM:0399241/IV/1> wherein R1 and R2 represent residues capable of being vatted, of which at least one is different from 1- or 2-anthraquinonyl, are prepared by condensing two molecular proportions of a 1,3-dihalogenanthraquinone with one molecular proportion of a diaminoanthraquinone, causing the product to react with two molecular proportions of an anthraquinone derivative containing an amino group and treating the product with an acid condensing agent.  The presence of a high-boiling solvent and a catalyst in the reaction is advantageous.  In examples (1) 2 mols. of 1,3-dibromanthraquinone are condensed with 1 mol. of 1,4-diaminoanthraquinone and the product reacted with 2 mols. of 1-aminoanthraquinone and condensed by means of aluminium chloride in pyridine to give a blackish-olive dye; replacing 1,4-diaminoanthraquinone by 1,5-diaminoanthraquinone gives a reddish-brown dye; replacing the 1-aminoanthraquinone by 1,4-monobenzoyl-diaminoanthraquinone gives an olive dye.  A further example illustrates the application of the first dye to cotton.  It is stated that the diaminoanthraquinone reacts with the a -halogen atom of the 1,3-dihalogenanthraquinones.  The Provisional Specification relates to the production of dyes by condensing either a 1,3-dihalogenanthraquinone or a 1,3-diaminoanthraquinone with a diaminoanthraquinone or a dihalogenanthraquinone respectively and thereupon causing the product to react with an anthraquinone derivative containing an amino group or a halogen atom respectively, and finally treating the product with an acid condensing agent.
Patent GB-898297-A (GB)
Title: Improvements in liquid storage tanks
IPC: B65D88/02
Filed: 1961-03-28
Abstract: 898,297. Storage tanks. CHICAGO BRIDGE & IRON CO. March 28, 1961 [May 12, 1960], No. 11231/61. Class 69 (1). A polygonal-sided storage tank with a flat bottom 12 and a flat roof 18 supported on columns 13 has side walls 15 with curvature increasing from top to bottom so that their curvature R at any point P (Fig. 6) is given by where H=height in inches of top-capacity line, D, above the bottom of the wall. T=Tension in a vertical plane in a 1 inch wide strip of the wall plate. w=Density of the stored liquid in pounds per cubic inch. h is the distance in inches of P below D and k and j are selective constants based on the height of the stored liquid and on its weight respectively. The tank described is square with radiused corners. The columns 13 support beams 16 which are crossed by purlins 17 under the roof plates 18. In the type of tank concerned, horizontal stresses varying with height due to the liquid content are balanced by hoop-tensions varying due to the curve of the wall which is of steel plate of constant thickness. The boundary tensions at top and bottom are taken by the roof 18 and bottom 12 which are of steel plates lap-welded together. Unbalanced stresses due to the downward pull of the overhang B of the wall and the upward pressure on its upper port c are taken by trusses 14. In this Specification   a sample relationship R P1 =T/wH (see Fig. 6) known to prior art is modified as at (1) above whereby the stresses in the roof and floor plates and in the truss members may be varied for effective and economical design. Values where   j=H/H-kH and k=0.05 to 0.25 are claimed.   Stress on the bottom plate may be reduced by connecting bottom plates 21 to side plates 22 to form a girder and by providing webs 23. U.S.A. Specification 2,593,408 is referred to.
Patent GB-540539-A (GB)
Title: Improvements relating to protective covers for machine-tool guides
IPC: B23Q11/08
Filed: 1940-07-04
Abstract: 540,539. Machinery guards. WICKMAN, Ltd., A. C., and CORNELIUS, J. R. July 4, 1940, No. 11248. [Class 80 (iv)] [Also in Group XXII] Consists in a protective covering for a machine tool guide which can be applied without imparing the rigidity of the slide. A slide a is movealble along a guide b by the usual screw c and nut d. Anchored to the guide or parts f fixed thereto and passing through the slide, are a number of flexible metal or other strips e of such size as to form a cover for the guide. Two strips e, Fig. 3, form a lower layer, and, in the example shown, three strips form an upper layer. The middle strip of the upper layer covers the gap between the two strips of the lower layer and, generally, the strips are so arranged that, when brought into contact on either side of the slide they overlap to form a complete cover. The slide comprises an upper part g and a lower part h which are recessed to accommodate an intermediate part i the whole being secured by screws o, o'. The strips pass through narrow passages formed by recesses m, m' in the upper and lower faces of the intermediate part. Cover pieces may be attached to the slide adjacent the outer edges of the outer strips and the portion of the slide where the strips are separated may form a bath for lubricant or cleansing liquid.
Patent GB-113598-A (GB)
IPC: B61F15/22
Abstract: 113,598. Hudson, E., and Hudson, W. S. Jan. 28, 1918. Dust, excluding; oil, retaining.-To secure a dust-excluding ring d in a roller-bearing axle-box for wagons and trucks used in mines, collieries, &c., a transverse rib b is cast across the lower part of the open end of the axle-box a, and holes e are formed in the upper part to receive a cross pin or wire f. The rib b retains oil in the box.
Patent GB-709782-A (GB)
Title: Elastic flexible bearings for rotating bodies, in particular rotors in a dynamic balancing machine
IPC: G01M1/04
Filed: 1952-05-06
Abstract: 709,782. Testing balance of rotary bodies. AVERY, Ltd., W. & T. (Schenck Maschinenfabrik Ges, C.). May 6, 1952, No. 11366/52. Class 106 (2). [Also in Group XXXIV] In a resilient bearing support, for a dynamic balancing machine, elastic means are arranged in different planes, preferably at right angles so that torsional oscillation or rotational movements of the bearing are resisted. As shown in Fig. 1, a,bearing bridge 4 is supported on vertical springs 5, which permit movement of a bearing 3 in a horizontal direction, and the bearing 3 is supported by horizontal springs 7 from a part 8 secured to the bridge 4 thus permitting movement .of the bearing in a vertical direction. A radially isotropic support arrangement is .provided if the elastic constant of the springs 5 and 7 is the same, but the constants may differ. The influence of the weight of the rotary member 1 may be removed by fitting an auxiliary spring 9 between the upper transverse spring 7 and the foot of the bracket 8. An auxiliary mass 17, Fig. 3, may be fitted as shown to balance the effective mass difference in the two planes. In a modification, Fig. 2, the bearing 3 is directly secured to the bridge 4, but the springs 5 are supported on levers 10 which are elastically secured to the foundation 6 by means of springs 11. The adjacent inner ends of the levers 10 are connected by a spring joint 12. A spring 13 compensates for the weight of the rotary member 1.
Patent GB-1343682-A (GB)
Title: Abrasive finishing article
IPC: B24D7/16
Filed: 1971-04-26
Abstract: 1343682 Abrasive tools NORTON CO 26 April 1971 [27 April 1970] 11433/71 Heading B3D An abrasive finishing article 10, Fig. 1, comprises a backing member 12 defining a central opening, a drive member 16 consisting of a boss 18 disposed through the opening and projecting from one side of the backing member, an outwardly extending member 38, Fig. 2, at the base of the boss disposed on the opposite side of the backing member, means 17 securing the drive member to the backing member, and finishing material 14 on the opposite side of the backing member. The securing means may consist of tabs 17 which are bent to grip the backing member against the outwardly extending member in the form of a flange. The upper end of the boss 18 has a lip 20 formed with a cut 22 to act as a screw-thread for receiving the thread 30 of a connecting stud 28 which extends through a flexible support pad 24 having a recess 34 to receive the tabs 17. The pad 24 has a central socket 31, Fig. 4, with a recess 33 of a depth 48 so that the inner periphery of the backing member is clamped against the flange. When assembled, a straight edge can be placed on the finishing material 14 without contacting the flange. In another embodiment, the drive member has a hexagonal boss which is a press fit in a hexagonal opening in the backing member. In a further embodiment, the boss is circular and the backing member is secured by adhesive to the flange.
Patent GB-114729-A (GB)
IPC: H02H7/26
Abstract: 114,729. Pearce, H. June 30, 1917. Protective arrangements.-Relates to the protection of parallel-connected conductors 1, 2, in alternating-current circuits adapted to transmit energy in either direction, and consists in the use of cross-connected balanced series-transformers 13, 14 and 15, 16 at each end of the respective conductors connected with relay devices 18 which operate circuit-breakers 6, 8 to cut out a specific predetermined conductor (conductor 2 in the arrangement shown), when a fault occurs on either of them, the relays or the circuit-breakers at the same time connecting overload protective devices 9, 11 with the other conductor. In the arrangement shown, if a fault occurs on either conductor. the resulting unbalancing of the cross-connected transformers actuates the relays 18 and completes the local circuits of the trip coils 10, 12 of the circuit-breakers 6, 8, the relays at the same time removing a short-circuit at 21 on the series transformers 22, 23 connected with the trip coils 9, 11, thereby putting the conductor 1 on overload protection with time-lag provided by the shunt fuses 24. If the fault is on conductor 2, conductor 1 remains connected, but if the fault is on conductor 1, both conductors are disconnected, the latter by the overload protection provided, so that the faulty conductor can be identified accordingly. The apparatus in connexion with couductor 1 may be duplicated in connexion with conductor 2 and switches may be provided to render either the relays on the conductor 1 or those on the conductor 2 operative on unbalancing due to a fault on either conductor. Instead of the relays serving on operation to introduce the overload protection on the second conductor this function may be performed by the movement of the circuit-breakers on the first conductor.
Patent GB-240752-A (GB)
Title: Improvements in and relating to insulators for conductors penetrating the walls of vessels containing gases under pressure
IPC: C01C1/04
Filed: 1925-05-04
Abstract: 240,752. Synthetic Ammonia &. Nitrates, Ltd., and Bramwell, F. H. May 4, 1925. Catalytic apparatus.: ammonia, catalytic production of from nitrogen and hydrogen. -In apparatus containing gases under high pressure, e.g. for use in the catalytic synthesis of ammonia, an electric conductor B passing through the wall A thereof 'is insulated therefrom by a washer H tapered from the rim to the centre and fitting gas-tightly between correspondingly inclined surfaces a<1>, b<1> on the conductor and the wall. In the construction described, the conductor B is for an electric heater and mav be of mild steel, and is cooled by water entering at C and flowing out through pipe E. The conductor is secured to the wall A by a screwed sleeve K, an insulating washer I, which may be of the same shape as washer H, and supplementary washers L being provided between the wall A and sleeve K. An insulating air gap T is also provided and is connected by a hole M with the outer air. The insulating washers H, I are made of a resistant synthetic resin with which about 60 per cent of asbestos is incorporated.
Patent GB-610691-A (GB)
Title: Improvements in or relating to means for measuring heat consumption in liquid circulating systems
IPC: G01K17/14
Filed: 1946-04-15
Abstract: 610,691. Integrating-apparatus. BRITISH THERMOSTAT CO., Ltd., and SHERLOCK, J. E. April 15, 1946, No. 11496. [Class 106 (iv)] [Also in Group XX] Apparatus for measuring heat consumption in a liquid circulation system comprising a ratchet-wheel in the transmission to a registering mechanism and a masking device whose position is varied by thermally responsive devices proportionately to the temperature difference between the liquid inlet and outlet and which moves between the ratchet-wheel and a co-operating pawl device to restrict the transmission of movement to the registering mechanism. An eccentric 10 on an output spindle 7 of a flow meter works in a slot 11 in a pawl-carrying arm 14 pivoted at 13 to an arm 12 freely rotatable about an output spindle 18 with fixed ratchet-wheel 17. As the arm 14 oscillates in accordance with the flow, three pawls 15 with staggered tips, mounted on the arm 14, actuate the ratchet-wheel 17 to an extent allowed by the position of a screen 40, freely rotatable about the spindle 18. An increase in temperature of the hot water supply is communicated to bellows 8 which working against a spring 19 moves the arm 12, through lever, rack and toothed sector, to increase the operative range of the pawls 15 beyond the screen 40, while an increase in temperature at the outlet of the system is communicated to similar bellows and through a similar rack and toothed sector to move the screen 40 to reduce the effective range of the pawls. Thus, the output of the spindle 18 is proportional to the flow and to the temperature difference and is registered by means calibrated in British Thermal Units.