baber/WOPTO huggingface dataset:
Patent GB-941690-A (GB)
Title: Method for preparing borazoles
IPC: C07F5/02
Filed: 1962-04-13
Abstract: Unsymmetrical borazoles of the formulae <FORM:0941690/C2/1> and <FORM:0941690/C2/2> are made by reacting a substituted borazole having the formula (HBNR)3 with a substituted borazole having the formula (R1BNR)3, where R and R1 are alkyl radicals of 1 to 6 carbon atoms or phenyl and R is the same for both reactants in a closed system at a temperature of about 170 DEG  to 400 DEG C., and recovering the unsymmetrical borazoles from the resulting reaction mass, preferably by distillation.  The molar ratio of the reactants determines which of the above compounds predominates at equilibrium and the ratio may be varied from 2:1 to 1:2.  Suitable starting materials are N-trimethyl-, N-triethyl-, N-triisopropyl-, N-tri-t-butyl-, N-tri-n-hexyl-, and N-triphenyl-borazoles, and hexamethyl-, hexaethyl-, hexaphenyl-, B-trimethyl-N-triphenyl, B-triethyl-N-tri-t-butyl-, and B-tripropyl-N-trimethylborazoles. Detailed examples are given.
Patent GB-1123094-A (GB)
Title: A process for the production of substituted 2,7-bis(phenylazc) derivatives of chromotropic acid
Inventor: BUDESINSKY BRETISLAV
IPC: C09B33/04
Filed: 1966-04-01
Abstract: Substituted 2,7-bis-phenylazo derivatives of chromotropic acid of general formula <FORM:1123094/C4-C5/1> in which Y is an -OH, -SH, -COOH, -SO3H, -SeO2H, or -CH2N(CH2COOH)2 group, R1 and R2 which may be the same or different are H, -COOH, -SO3H, -NO2, -NHCOCH3, -N(CH3)2-N(C2H5)2 -CH3, -Cl, -Br or -F are prepared by coupling diazonium salts of formula R1R2YC6H2N2A in which A is a chloride or sulphate anion, R1R2 and Y being as above, with chromotropic acid whilst stirring at a temperature below 0 DEG  C. in aqueous alkali medium at pH 10-14 in the presence of organic bases and ions of the alkali earth metals Be, Mg, Ca and Sr to form the bisazo compounds which are purified by precipitation with HCl to remove the metal ions. The organic base used may be pyridine, quinoline, trimethylamine or tetramethylammonium hydroxide used in a ratio of 1:1 to 1:5 to water.  The course of the coupling reaction may be monitored by adding a sample of the coupling reaction mixture to conc. sulphuric acid when the bisazo dye is indicated by a green colour and the mono-azo dye is indicated by a blue colour.ALSO:In Examples 6, 7 and 10 the bisazo compounds of formulae <FORM:1123094/C2/1> <FORM:1123094/C2/2> <FORM:1123094/C2/3> are prepared by coupling the diazotized aminophenyl-arsenic or -stibenic acid with chromotropic acid in water and pyridine mixture in presence of calcium ions, this being followed by precipitation with concentrated hydrochloric acid.
Patent GB-461728-A (GB)
Title: Improvements in or relating to stop motions for knitting machines
IPC: D04B35/12
Filed: 1936-05-22
Abstract: 461,728. Knitting-machines. HEMPHILL CO. May 22, 1936, No. 14540. Convention date, June 14, 1935. [Class 74 (ii)] In a multi-feed circular machine, a stopmotion device is provided for each yarn, comprising a yieldable yarn guide 36 movable to initiate stoppage of the machine and from which guide the yarn will not become disengaged upon such movement. A stop device operating upon failure of supply, comprises a fixed grid 21 and a pivoted grid 24 between which the yarn is guided. The grid 24 falls by gravity upon breakage &c. of the yarn so that a lug 26 thereon makes contact with a ring 27. The guide 36 is operated upon excessive tension and is provided at its end with an eye 40 through which the yarn is led. The guide is controlled by a spring 39 so that normally it supports a detent 55, Fig. 6, out of contact with a contact member 53. The provision of the detent 55 permits the guide 36 to be pulled down further after the stopping has been initiated to prevent breakage of the yarn. Separate electrical circuits are provided for 'each of the devices, and by means of a lamp and a switch controlling an audible warning device, the device initiating the stoppage is readily located. An additional stopping device may be provided near the needles. Specification 442,267 is referred to.
Patent GB-482234-A (GB)
Title: Improvements in or relating to motor compressor units for refrigerating apparatus and other installations
IPC: F25B31/00
Filed: 1937-05-25
Abstract: 482,234. Oscillating-cylinder compressors. PATRIGNANI, L. May 25, 1937, No. 14546. Convention date, Oct. 31, 1936. [Class 8 (i) A compressor unit, primarily intended for refrigerating apparatus, comprises an oscillating- cylinder compressor 11 operated by an electric motor 2, arrangements being provided for separating the oil from the compressed gases and returning it to the compressor casing 7. The compressor comprises one or more cylinders operated by an eccentric 10 on the shaft 1 which engages an orifice in a piston 11 reciprocating in an oscillating cylinder 13. The shaft 1 and the trunnions of the cylinder 13 are carried by footstep bearings 3, 22 in the casing 7 and in journal, bearings 9, 2] in the cover 8. The compressed gas is discharged through a trunnion 20 of the cylinder 13, a packing sleeve 24 and a pipe 23, to a separator 29, containing glass wool, or metal turnings. The oil which collects at the bottom of the separator passes by a valve 33 to a cup 32, carried by the rotor 2, and is discharged by centrifugal force to the periphery of the motor and so returns to the bearings and to the casing 7. The valve 33 remains closed while the motor is running, but, when the motor stops, the valve is lifted by a rod 34 operated by the levers of centrifugal weights 37 carried by the rotor. The motor and compressor are enclosed in a sealed casing 26, and the electric connections of the motor comprise binding posts, entering the casing through porcelain or other insulators, and engaged by spring contacts on the motor.
Patent GB-919116-A (GB)
Title: Improvements in operating devices for venetian blinds
IPC: E06B9/326
Filed: 1960-04-26
Abstract: 919,116. Venetian blinds operating devices. FRIDLUND, O. April 26, 1960, No. 14548/60. Class 20 (3). A venetian blind operating device consisting of a hand wheel 12 rotatably mounted on a sleeve 4 through which the lifting cord 1 of the blind is drawn and jammed into place by a bolt 21, has a drum 11 on which are wound in opposite directions two cords 2a, 2b for tilting the blind. In a modification the lifting cord 1 passes through a bore in the bolt which is screwed into the sleeve 4, the cord being jammed by the lower end of the bolt against an inner flange of the sleeve.
Patent GB-354813-A (GB)
Title: Improvements in or relating to electric motor driving mechanisms for valves and other devices
IPC: F16K31/04
Filed: 1930-05-12
Abstract: 354,813. Electrically-actuated valves. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London.-(Cutler- Hammer Manufacturing Co. ; Milwaukee, Wisconsin, U.S.A.) May 12, 1930, No. 14557. [Class 135.] An electric motor driving mechanism for valves &c. consists broadly of a unitary device comprising a reversible driving motor 101, a valve-operating shaft 102, reduction gearing 110 .. 117, a torque coupling 122, 123 with enclosed driving springs 124, 125, and a limit control switch 131 .. 134 mechanically connected with the torque coupling to stop the motor upon movement of the coupling parts out of a given angular relation, the motor 101 and switch 131 .. 134 being carried by a casing 106 which encloses the drive, and the operating shaft 102 being mounted in a bearing in the said casing, as shown. The two parts 122, 123 of the coupling have peripheral teeth engaging pinions 135, 136, the latter integral with a screwed spindle 139 carrying the former, which is elongated as a nut. For normal driving the pinions rotate in unison, but excess of torque (such as by arrival of the driven part at either of its limits, or previously by jamming) causes the pinion 135 to move along the screw, and operate a pusher bar 140 by means of a disc-like head 141 which engages a groove in the pinion 135. The other end of the bar operates the limit switch contact member 131 in one direction or the other to stop the motor.
Patent GB-1391695-A (GB)
Title: Treatment of gases
IPC: B03C3/013
Filed: 1972-03-28
Abstract: 1391695 Electrostatic separators ENVIRONMENTAL ELEMENTS CORP 28 March 1972 14578/72 Heading B2J  An aqueous solution of ammonium sulphate or bisulphate is injected into a particleladen gas stream to condition it and thereby improve the electrostatic collection characteristics of the entrained particles. As shown, the solution is fed from a tank 24 by way of a pump 29, a valve 28 and a meter 30 to injection nozzles 31 in a duct 18 through which flue gas from a coal-fired boiler (10) Fig. 1 (not shown) passes on its way to an electrostatic precipitator 12, the duct 18 being downstream of a preheater 14 in which the gas gives up some of its heat to ambient air supplied to the boiler. The solution may contain from 5% to 50% by weight of the conditioner, the preferred range being 10% to 20%. The rate of injection is such that the conditioned gas contains at least 31.2 lb of conditioner per million cu. ft. of gas. The gas stream is exposed to the conditioner, before the entrained particles are collected, for no less than 0.25 seconds, with the temperature preferably being no less than 240‹F and no more than 800‹F. It is stated that the conditioning controls the resistivity of the entrained particles to within about 10<SP>6</SP> to 10<SP>10</SP> ohm-centimeters, whether or not the particles have a normally high or normally - low resistivity characteristic, whereby the collecting efficiency of the precipitator is improved.
Patent GB-291442-A (GB)
Title: Improvements in or relating to means for mounting filaments in electric discharge devices
IPC: H01J1/18
Filed: 1928-05-18
Abstract: 291,442. British Thomson-Houston Co., Ltd., (Assignees of Rel,yea, W. 1.). June 3, 1927, [Convention date]. Vacuum tubes.-A filament for use in a thermionic valve is secured to a support by a split cylindrical collar. As shown in Fig. 1, the ends 3 of angular members 2 mounted on a leading in wire 1 are cut away to form plane surfaces against which the ends of the filaments 4 are secured by cylinders 5, each of which has a flat portion 6, a semicircular groove 7, Fig. 3, receiving a filament, and extensions 8, 9 which are pulled together against the outer surface of the collar and are secured at the ends by arc welding. The filaments may be further secured by arc welding at 12.
Patent GB-1339342-A (GB)
Title: Variable line build-out networks
IPC: H04B3/40
Filed: 1971-05-13
Abstract: 1339342 Line build out network WESTERN ELECTRIC CO Inc 13 May 1971 [19 May 1970 8 Oct 1970] 14708/71 Heading H4R In a variable line build out network, for building out a line to a standard length, the signal is applied to at least two parallel paths one of which has an amplifier and means for introducing distortion equivalent to that caused by a length of cable while another path has only an amplifier. The outputs from the two paths are combined to synthesize the response of a length of cable, either positively or negatively, the apparent cable length may be varied by differentially varying the gains of the amplifiers. As described, a signal from source 13 is applied via a common emitter resistor 27 to two transistor amplifiers 25, 26, with the division of signal current between them controlled by the voltage Vc applied to the base of transistor 25, so that the effective gains of the amplifiers are differentially varied. One amplifier 25 feeds a lossy line 42 while the other 26 feeds a loss free line 43 having the same delay as the line 42. The outputs from the two lines 42, 43 are combined by transistors 45, 46. Control of the differential gain varies the effective line length from zero when the gain of transistor 25 is zero and the gain of transistor 26 is maximum, to a maximum value when the gain conditions are reversed. If the lossy line is replaced by a network having the same loss without signal delay the loss free line can be eliminated. If the network in the upper signal channel has an inverse characteristic to a line then the arrangement can provide an effective reduction in the length of line to which the arrangement is connected. A multichannel circuit can have paths each having a loss equivalent to a different multiple of a line length to provide a greater range of compensation.
Patent GB-821894-A (GB)
Title: Roadway guard rail barrier
IPC: E01F15/04
Filed: 1957-05-09
Abstract: 821,894. Fencing. SMITH, H. S. May 9, 1957 [May 14, 1956], No. 14717/57. Class 45. A roadway guard or fence comprises a side plate having an outwardly bulging upper portion, and bolting means for fastening the plate to the roadway. At longitudinally spaced stations along a guard comprising side plates 1, 2 having upper bulged portions 5, each plate has a projection 9 and lugs 8, 11. At each station a washer 13 rests on a projection 9 and a lug 8, and a bolt 15 passing through the washer and slotted holes in the lugs is screwed into a nut 18 fixed in the roadway 17. The ends of the plates, which may be steel, aluminium, reinforced plastic or fibreglass, have tongues engaging the inside surface of adjacent plates, and an expansion packing may be placed between adjacent plates. The ends of the plates on opposite sides of the guard may register or be staggered. In modifications the fixing bolts may be inclined to the vertical or be replaced by ground anchors. In a further modification the lugs 8 and projections 9 are replaced by troughs which may be formed by folding the side plates, and the washers have depending projections engaging the troughs. The space between the plates may be filled with concrete.
Patent GB-233178-A (GB)
Title: Improvements in or relating to numbering machines
IPC: B41F33/04
Filed: 1924-06-18
Abstract: 233,178. Barker, R. W., (American Bank Note Co.). June 18, 1924. Number-printing apparatus; tripping-arrangements.-A number-printing machine in which a series of numbering-heads 12 are arranged on a cylinder 11 mounted in eccentric bushings 13 and are operated by striker rollers 17 mounted on lever arms 16 on a shaft 15 is constructed with means for simultaneously rotating the bushings 13 to trip the cylinder 11 from its impression cylinder and for moving the rollers 17 out of operation. The arrangement is such that the rollers 17 can be moved out of operation by a separate manual adjustment without tripping the cylinder 11, so as to allow of repeat numbers being printed, and when inking-up the cylinder 11 can be tripped and the rollers 17 remain in operation. The actuating members 18 of the numbering-heads 12, with which the rollers 17 cooperate, are below the planes of the digit wheels, and the wheels are moved by a positive actuation. The common control means for the bushings 13 and shaft 15 comprises a crank disc 19 connected by a link 20 to an arm 14 on one of the bushings, and to a link 31 which controls the rotation of a cam disc 26 with cam slots 27 engaging pins 28 on a member fixed to the shaft 15, the arrangement being such that rotation of the disc 26 in a counterclockwise direction by link 31 rotates the shaft 15 to bring the rollers 17 out of the path of the arms 18. A compression spring 20 encircling the link 20 tends to cause the disc 19 to move counterclockwise to trip the cylinder 11 and the striker rollers 17. This movement is normally restrained by a catch 43 operable by an electromagnet 51, or by a treadle, 45 when, owing to failure of feed &c., it is desired to trip the impression. The link 31 is pressed to the left by a spring 41 causing a recess 22 formed in a slot 34 of the link to engage normally with a pin 30 on the cam disc 26. When it is desired to repeat a number, the link 31 is moved to the right by a pin 36 on a freely-mounted disc 37 adjacent to the disc 26. The disc 37 is moved by hand counterclockwise, and the, pin 36 acts on a projection 35 of link 31, and moves it to the right to free the pin 30 from the recess 32. The left end of a slot 39 in disc 37 then acts on a pin 38 on disc 26 and moves it counterclockwise to trip the striker rollers 17, the pin 30 moving in the slot 34. For inking-up the number discs after the bushings 13 and the striker rollers 17 are simultaneously tripped by the disc 19, the strikers 17 are manually restored to operative position by moving the disc 26 in a clockwise direction by means of the disc 37.
Patent GB-1077867-A (GB)
Title: Improvements in or relating to electrical interconnections
IPC: H01L21/48
Filed: 1966-04-04
Abstract: <PICT:1077867/C6-C7/1> In a method of interconnecting conductors 1, 2, Fig. 5, on opposite sides of an insulating sheet 3, conductor 1 and sheet 3 are punctured by a pointed punching tool (not shown) which does not penetrate conductor 2, so that metal of conductor 1 is displaced sufficiently to prevent the displaced material of the sheet 3 from flowing back into the hole made by the tool when the latter is removed, a small area of the conductor 2 being exposed for connection to the displaced metal of conductor 1. Preferably, such connection is effected by electroplating; in the apparatus shown, a plating electrode 12 is immersed in a plating solution (e.g. a weak acid aqueous solution of a salt of Au, Cu, Cd & c.) in a container 13 having ducts which communicate with a brush 14, which is passed across the pierced face of the sheet 3 to deposit metal 15 in the hole.  Fig. 7 (not shown) depicts a portable kit for making printed wiring interconnections, including, inter alia, a supply of polyethylene terephthalate sheets having Cu wiring adhered in matrix form to opposite sides thereof, a scraper for removing unwanted portions of such wiring, a glass plate on which a sheet is placed during the punching step, and a portable brush plating equipment. Alternatively, the connections may be established by plating a plurality of holes in a plating bath, or by spraying with a metal suspension.
Patent GB-1444192-A (GB)
Title: Polyisocyanate compositions
IPC: C08G18/00
Filed: 1974-04-03
Abstract: 1444192 Polyisocyanate compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 11 March 1975 [3 April 1974] 14785/74 Heading C3R A polyisocyanate composition comprises, by wt.: 30-85% (A) a mixture of methylenebridged polyphenyl isocyanates, 5-70% (B) a reaction product of diphenylmethane diisocyanate with an alkylene or polyoxyalkylene diol in mole proportions from 1 : 0À005 to 1 : 0À6, and 0-50% (C) diphenylmethane diisocyanate (D), where (A) contains 30-65% (D), the balance being methylene-bridged polyisocyanates of higher functionality and byproducts from the manufacture of such polyisocyanates by phosgenation; and where the composition comprises 55-90% (D), including that prereacted with the diol. The components may be blended at 50-70‹ C., any solid diisocyanate being melted before blending. The composition is used to manufacture integralskin rigid, semi-rigid, and flexible polyurethane foams, polyurethane car bumpers, crash-padding, and microcellular shoe soles.
Patent GB-253903-A (GB)
Title: Improved combustion of pulverised fuel
IPC: F23C99/00
Filed: 1926-06-12
Abstract: 253,903. Wood, W. R. June 16, 1925, [Convention date]. Pulverulent-fuel furnaces; fuel, feeding. - To prevent the fusion of ash in the lower part of the combustion chamber of a pulverulent-fuel furnace, the lower part of the combustion chamber is screened by the unburnt fuel as it is injected horizontally across the combustion chamber, air for combustion being admitted below the fuel screen. As shown in Fig. 1, the fuel is injected through a nozzle 17 by oppositely-rotating drums 18, 19 and the air is supplied through inlets 7, 8 in the front and rear walls of the combustion chamber A. The upper parts of these walls where combustion is complete may be protected bv tubes 12 connected to the boiler. In a modification, the air supply may be preheated in a casing surrounding the boiler.
Patent GB-1304423-A (GB)
IPC: G03C1/34
Filed: 1970-03-26
Abstract: 1304423 Thiourazole adducts EASTMAN KODAK CO 26 March 1970 [4 April 1969(2)] 14881/70 Heading C2C [Also in Division G2] An adduct of a thiourazole of formula or a tautomer thereof: where X is oxygen, sulphur or an imino group, and R is hydrogen, C 1-8  alkyl or an aryl group and an alpha-beta-unsaturated compound of formula where each of R<SP>1</SP> and R<SP>2</SP> is hydrogen, or alkyl and R<SP>3</SP> is hydrogen, hydroxyl, amine, alkyl or alkoxy is prepared by reacting the two compounds together. The adducts may be used as corrosion inhibitors, fuel additives, antioxidants, plasticizers for polymeric compositions and in silver halide emulsions (see Division G2).
Patent GB-129170-A (GB)
Title: Improvements relating to Knee-joint Mechanism for Artificial Legs.
IPC: A61F2/64
Filed: 1918-09-14
Abstract: 129,170. Smith, T. B., and Pedestros, Ltd. Sept. 14, 1918. Limbs, artificial.-In knee-joints of the kind in which a lever pivoted on the knee-joint pivot is rotated by flexible harness to turn the lower leg, a resilient member is introduced at some point between the harness and the final operating-member, to cushion the turning movement. Fig. 2 shows one arrangement in which the lever g is operated by the flexible cord i and contacts with a cross-bar d to turn the leg. According to the invention, a spring or resilient buffer l is fitted on the lever at the point of contact with the bar. Limiting buffers f may also be fitted in the slots e in which the bar is moved. In a modified construction, the buffer l is replaced by a circular buffer surrounding the cross-bar d. Fig. 4 shows a modified construction in which a spiral spring or rubber block l is interposed between the lever g and a bar m attached to the lower leg, and a limiting buffer x is carried by the bar m. As a further modification, a plate spring may be fitted on the bar to engage the end of the lever. Fig. 8 shows a construction in which the lever g is replaced by a spring g<1> acting resiliently on the bar m. Fig. 11 shows a construction in which the bar m<1> contacts with buffers u, v fixed on an arm t in the lower leg member. Fig. 15 shows the application of a tension spring 11 to provide a resilient connexion. A resilient stop 12 prevents over-straining of the spring. A torsional spring centred round the pivot pin c may also be used to produce the resilient action. Fig. 1 shows a leather packing for the pivot pin c. Caps 7 screwed into cups 5 force the leather 6 against the pin.
Patent GB-288053-A (GB)
Title: Cove and other lighting systems
IPC: F21Y101/00
Filed: 1927-06-07
Abstract: 288,053. Hotchkin, P. M. June 7, 1927. Systems of wiring. - To enable lamps to be arranged in coves, windows, &c., the supply conductors 13 are arranged in a trough 7 and the bulb-holders or adapters are supported by separable members 17, 18 adapted to be clamped together at desired positions in the open side of the trough, and to be secured therein by gripping flanges 10. The parts of the open side of the trough between the bulb-holders are closed by plates 12<a>. These plates are sprung into position and secured by the clamps 17, 18.