baber/WOPTO huggingface dataset:
Patent GB-410809-A (GB)
Title: An improved mechanical drive mechanism
IPC: G03B31/02
Filed: 1932-11-23
Abstract: 410,809. Driving sound films. RADIO CORPORATION OF AMERICA, 570, Lexing- ton Avenue, New York, U.S.A. Nov.23,1932, No. 33151. Convention date, Dec. 3, 1931. [Class 40 (ii).] Driving-mechanism particularly suitable for use in sound-film apparatus, for driving a shaft at a uniform speed and absorbing irregularities in the transmitted motion, comprises a resiliently mounted idler gear between a driving and a driven gear, and is characterized by a member which carries both the idler gear and a damping device which frictionally engages the driving gear or the drive mechanism therefor. In the construction shown in Fig. 1, transmission mechanism between a motor 1 and a shaft 8, which is to be driven at a constant speed, and which is preferably provided with a flywheel, comprises an idler wheel 4 between wheels 3, 5. The wheel 4 is mounted on an arm 6, which is pivoted upon the shaft 8, and is under the control of a spring 7. The arm has an extension carrying a pad or brake shoe 10, preferably having a leather surface, which bears against a flat smooth face of the wheel 3 and thereby serves to damp out oscillations which may arise through slight variations in the peripheral speed of the gear 3. The spring 7 may be so designed that small movements of the gear 4 will not cause appreciable changes in the tangential force applied to the gear 5. In a modification (Fig. 2, not shown), the arm 6 is mounted on an external pivot, beyond the shaft 8, and the brake shoe 10 is carried by a slightly flexible arm arranged between two guard members. These features are also provided in a third construction, Fig. 3, in which 13 is the flexible arm carrying the shoe 10, and 15 are the guards. The shoe 10 in this case bears against a cylinder 14, and moves longitudinally thereof when the arm 6 carrying the idler gear 4 turns about its pivot 12.
Patent GB-686822-A (GB)
Title: Improvements relating to the operation of electric discharge lamps
IPC: H01J61/54
Filed: 1947-12-16
Abstract: 686,822. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., PRIVETT, H. L., CLARKE, M. G., and RUFF, H. R. Jan. 17, 1949 [Dec. 16, 1947], No. 33152/47. Class 39(i) An electric discharge lamp of the low pressure type associated with a metal fitting is started by electrode preheating; for ready initiation of the discharge the metal fitting is earthed, and constructed so as to contact the lamp envelope at regions spaced apart over the surface of the envelope at distances not greater than seven times the diameter of the envelope. The metal fitting may be in the form of a trough supporting the lamp holders. It may be provided with spring clips or plungers which contact or embrace the lamp, or with a zig-zag strap, or with one or more continuous springs, or the metal fitting may be provided with punched out projections. Starter switches may also be used. Specifications 462,451, 517,253, and 643,642 are referred to.
Patent GB-624886-A (GB)
Title: Improvements in or relating to circuit-arrangements for the expansion of electrical oscillations
IPC: H03G7/02
Filed: 1946-11-08
Abstract: 624,886. Valve amplifying circuits. PHILIPS LAMPS, Ltd. Nov. 8, 1946, No. 33290. Convention date, May 6, 1943. [Classes 40 (v) and 40 (vi)] In an expander circuit using a valve having at least two control grids and two screen grids, the signal and a voltage dependent of the signal amplitude each being applied to a different control grid, a circuit common to the screen grids includes a resistance of such size that the mutual conductance of the valve increases with an increase in the negative control voltage. As shown, the signal is applied to the first control grid of a heptode valve 5. Part of the output is rectified by a diode 15 to give a negative control voltage which is applied to the second control grid of valve 5 through a filter 19. The screen grids are connected to the H.T. supply through a common resistance 17 of such size that the mutual conductance of the valve increases with an increase in the negative control voltage. The control voltage and the signal input may both be applied to the second control grid, Fig. 4 (not shown). In a further modification, Fig. 5 (not shown), the signal input and the control voltage are applied to the first and second control grids respectively, and an amplified signal is taken from the first screen grid and applied to the second control grid via the second screen grid and a voltage divider. The invention enables the cathode of the control rectifier to be at the same potential as the cathode of the amplifier. Negative feedback may be used to reduce distortion.
Patent GB-780865-A (GB)
Title: Improvements in or relating to apparatus for grinding and/or polishing glass
IPC: B24B7/24
Filed: 1954-11-17
Abstract: 780,865. Grinding and polishing glass. GLACERIES DE LA SAMBRE SOC. ANON. Nov. 17, 1954 [Dec. 19, 1953], No. 33301/54. Addition to 700,835. Class 60. In the apparatus of the parent Specification, each tool-carrying shaft 5, Fig. 1, is mounted in a first threaded sleeve 4 which threadedly engages a second threaded sleeve for individually adjusting the axial position of the shaft, the sleeves 4 being coupled to at least one common shaft 1, 2 so that axial displacement of the sleeves 4 can only be effected simultaneously. The shafts 1, 2 are journalled in bearings at opposite sides of a cross member 3 and are connected by cranks 7, 8 and links 9, 10 to brackets 11, 12 fixed to the walls of a beam 13 carrying the tools. The member 3 supports the sleeves 4 in which the shafts 5 are mounted and is in turn supported from the piston 17 of a hydraulic cylinder 18 for regulating the pressure of the tools 14, 15 on the glass. When the member 3 is adjusted vertically the shafts 1, 2 rotate and constrain the member to move parallel to itself. Fig. 3 shows an alternative construction, in which the tool-carrying shafts 28 are coupled for uniform axial movement by a pair of shafts 21, 22 provided with pinions 25 in engagement with racks 26 secured to sleeves 27 in which the shafts 28 are mounted. A motor 30 connected to the shafts 21, 22 through toothed gearing 32, 33 enables the level of the tools to be adjusted. The shafts, cranks and links of Fig. 1 may be replaced by an arrangement such as that shown in Fig. 3 and a magnetic clutch be provided between the motor and the toothed gearing to enable the tools to be supported by the hydraulic cylinders when required.
Patent GB-607229-A (GB)
Title: Improvements in or relating to the removal of dust generated by machines for cuttingtile and like workpieces
IPC: B24B55/06
Filed: 1945-12-10
Abstract: 607,229. Dust confining in industrial processes. MARTIN, C. A. Dec. 10, 1945, No. 33355. [Class 8 (ii)] Dust generated when a cutting wheel 17, Fig. 1, engages a workpiece 16, e.g. a tile mounted on a horizontal reciprocable table 14, is caught in a chamber 57, Fig. 5, comprising a body section with a suction outlet 61 and adapted to move vertically relative to the workpiece 16 as the latter is moved during the cutting operation, and a pan section for transferring dust to the body, and which is formed as a unit to move horizontally with the workpiece after the body section engages the top of the same. The body comprises a top wall 58 and depending side walls 59 disposed rearwardly of a hood 56, and by means of links 62, 63 swings downwardly against the action of a spring 66 to contact a stop 67 on the hood 56. The pan comprises a horizontal bottom wall 69, an inclined rear wall 70 and two vertical side walls 68 having rollers 72 which by engagement with rails 71 on the body serve to provide horizontal movement of the pan against a spring 84. Means for the vertical adjustment of the chamber 57 so that the body and pan occupy the same position relative to the cutter periphery irrespective of the cutter diameter and which position is determined by gauge rollers 65 and bearing rollers 75, comprises an adjusting shaft 77 mounted on the lower rear part of the pan and carrying on its inner end a controlling arm 78, and on its outer end a slotted adjusting arm 79. A roller 80 on the upper end of the arm 78 runs along a track 81 of a relatively stationary horizontal member of a carriage 18 supporting the cutter and dust catching chamber, and the arm 79 is adjustably secured to the body wall 59 by a clamping screw 82. The carriage 18 runs on vertical guide posts 26, and in order to bring the cutter to bear on the workpiece the carriage is moved downwardly against the action of a spring 41 by a pedal 46 at the end of a lever 44 acting through a link 47, a lever 39 and a rod 36. When making a cut of minimum depth equal to the distance between the underside of the gauges 65 and the cutter periphery, the carriage 18 is lowered so that the gauges are horizontally in line with the top of the workpiece. The latter is then pushed forward and on reaching the pan roller 75 pushes it rearwardly as shown in Fig. 5, against the spring 84. In order to make a deeper cut, the carriage 18 is lowered so that the top of the workpiece is at the proper distance above the gauge rollers 65, and the workpiece after passing the vertical line through the cutter axis engages the rollers 65, 75 and pushes the catcher body rearwardly and upwardly and the pan rearwardly as shown in Fig. 8.
Patent GB-390459-A (GB)
Title: Improvements in or relating to doors
IPC: E06B3/70
Filed: 1932-11-25
Abstract: 390,459. Door bodies; panels. ALDAM, E. H., Britannic Works, Haslemere Avenue, London. Nov. 25, 1932, No. 33366. [Classes 20 (iii) and 20 (iv).] A door is composed of one or two panels consisting of a number of horizontal or vertical or inclined parallel wooden strips housed in a metal channel or like frame a and secured together by nails c and tongue-and-groove or other invisible means. A sheet or sheets of metal, preferably corrugated, or metal and asbestos may be interposed when two panels are provided, the nails being driven through the sheets and the edges of the strips being shaped as shown in Fig. 6. One or both vertical edges of the door may have a wooden batten fitted into an H-section frame member a<1>, Fig. 5. One vertical frame member is removably secured by gussets &c. a<2> to permit the insertion of the strips.
Patent GB-1511105-A (GB)
Title: Phosphite ester stabilizer compositions for vinyl polymer
IPC: C08L51/02
Filed: 1976-08-11
Abstract: 1511105 Stabilized phosphite esters BORGWARNER CORP 11 Aug 1976 [11 Aug 1975] 33462/76 Heading C2P [Also in Division C3] Dialkyl pentaerythritol diphosphites (I) and polyalkyl bisphenol-A polyphosphites (II) wherein the alkyl groups in each case each contain 8 to 20 carbon atoms are stabilized by the addition thereto of a minor proportion by weight of triisopropanolamine. The diphosphites (I) have the formula and specified polyphosphites (II) are those having the general formula the radicals R and R<SP>1</SP> being C 8 -C 20  alkyl radicals and A and B each being or RO and n is 1 to 5. A small proportion by weight of a C 8 -C 20  aliphatic alcohol may also be added to the diphosphite (I) and this may conveniently be effected by using a stoichiometric excess of the alcohol (ROH) in the preparation of the diphosphite. The triisopropanolamine should generally be present in an amount of 0À01 to 5% based on the weight of the stabilized phosphite. The stabilized phosphites are useful as stabilizers for vinyl polymers. A polyalkyl bisphenol-A-polyphosphite is prepared by mixing 1 mol. of triphenyl phosphite, 0À5 mol. of bisphenol A, 2À0 mols. of a mixture of C 12 -C 15  alkanols, and sodium methylate as catalyst, and heating to distill off phenol.
Patent GB-1008257-A (GB)
Title: Improvements in or relating to low noise wideband magnetic playback systems
IPC: H04N5/931
Filed: 1963-08-23
Abstract: 1,008,257. Magnetic playback heads; frequency compensation. AMPEX CORPORATION. Aug. 23, 1963 [Sept. 4, 1962], No. 33493/63. Heading G5R. [Also in Division H3] In order to improve the signal to noise ratio in a magnetic playback system the number of turns on the playback head is increased until the input circuit is resonant within the working frequency range and the response levelled by damping the circuit by means of negative feedback around the preamplifier. It is stated that the optimum is reached by making the resonance frequency the geometric means of the limiting frequencies of the working range. The winding 24 of the head is coupled by transformer 27 to an amplifier (see Divisions H3) comprising a first valve 36 coupled to a common-cathode pair 48, 54, negative feedback being applied from the anode of the valve 54 to the grid of valve 36 via resistor 66 and D.C. blocking capacitor 64. An alternative amplifier is described (Fig. 4, not shown) and the feedback path may comprise filter networks to improve the overall frequency response (Fig. 3, not shown).
Patent GB-772679-A (GB)
Title: Improvements in or relating to a method of continuously handling sheets in piles in the production of printed sheets in a printing press and apparatus for carrying out the method
IPC: B65H1/30
Filed: 1954-11-19
Abstract: 772,679. Feeding and delivering sheets. HARRIS-SEYBOLD CO. Nov. 19, 1954 [Nov. 20, 1953], No. 33553/54. Class 100(1) Receivers: pile supports. In a pile raising or lowering device, in order that the pile may be replenished or removed without interrupting the operation of a sheet-feeding or sheet-delivery apparatus, an auxiliary support adapted to be inserted into the main pile comprises top and bottom plates, spacing and stiffening devices between the plates, and means for introducing a film of air on either side of the auxiliary support during the insertion and removal thereof. The auxiliary support 14 has a frame comprising side bars 15, 16, rear bars 17, 18, and three cross bars 19; 20, 21 having small air passages 25 therethrough. Upper and lower plates 23, 22 are provided which are joined to produce a tapered front position 24 in which air parts 46 are provided, this facilitating entry of the support into the pile. The joints between the frame and the plates 22, 23 are sealed to provide an air chamber in advance of the bar 17 to which air is supplied by a valve 29. Each of the plates 22, 23 comprises' a wooden core 31 and inner and outer metal skins 32, 33. At intervals throughout the top plate the core 31 and skin 33 are cut away to form cavities 34, a port 35 being cut in the skin 32. Through port 35 extends a valve stem 36 of a valve 45 which includes a gasket 39 normally sealing the port 35 under the action of a spring 41 against a circular abutment 40 formed on the stem 36. When the support is inserted in the pile the weight of the latter is sufficient to depress the valves 43 to open the ports 35 so that the required film of air is provided. Similar valves are provided on the bottom of the support 14, except that on the valves on the upper side small bleed passages 42 are provided in the event of the weight of the pile being insufficient to operate the valves. The auxiliary support, when used in a sheet feeding machine is supported, when inserted, on angle irons which continue to raise the remnant pile while the main support is being replenished.. Owing to the tapered end of the support 14 it may be used in the front-end separator, the height of the front end of the pile not being materially affected during the insertion or withdrawal. In a simple form of support 14 the ports in the top and bottom plates may consist merely of holes. In. a fourth modification the support may be made solid instead of hollow and be provided with tubular air conductors to the ports.
Patent GB-337732-A (GB)
Abstract: 337,732. Auer, L. April 24, 1929. Fats and fatty oils; fatty acids; mineral and tar oils; waxes and similar organic isocolloids consisting of or containing high molecular organic unsaturated acids are heated above 250‹ C., or in the case of thickened oils or tung oil above 200‹ C., with 2 to 10 per cent by weight of a primary aromatic diamine and/or a monamine of high molecular weight, until the amine is dispersed or dissolved therein. The resulting modified isocolloids are used as bases in the manufacture of varnishes or rubber substitutes. As primary aromatic diamines, m-phenylenediamine, p-tolylenediamine or p p<1>-diamines, e.g. p p'- diaminodiphenylamine or p p'-diaminodiphenylurea may be used. A monamine of high molecular weight comprises amines wit.h more than one benzene ring. e.g. #-naphthylamine, benzidine, or 1 : 5-diaminoanthraquinone. In examples (1) linseed oil is heated for 5 hours at 280‹ to 800‹ C. with benzidine which may be mixed with alpha-naphthylamine. After cooling a hard solid is formed, (2) linseed or china wood oil fatty acids are heated at 200 to 250‹ C. with #-naphthylamine or p-phenylenediamine. To the amines may be added other modifying agents such as organic acids, salts, organometallic compounds as described in Specification 287,943, or compounds comprising an organic residue united to an inorganic acidic residue (e.g. benzene sulphonic acid) as described in Specification 321,724. The reaction mass may be submitted to a gas treatment as described in Specification 287,943 or to irradiation e.g. ultra violet or X-rays, or small amounts of organic metal-free secondary agents e.g. aldehydes, phenols or ketones may be added thereto. The products may be vulcanized with or without an accelerator e.g. mercaptobenzthiazole, or an activator e.g. zinc oxide, or they may be emulsified as described in Specifications 318,562 or 321,694. Specifications 12957/02, 289,414, 289,415, 299,790, 316,251, 321,689, 321,690, 321,691, 321,692, 321,693, 321,699, 321,722, 321,723, 321,725, 321,726; and 321,727, [Class 95, Paints &c.], also are referred to.
Patent GB-1511530-A (GB)
Title: Ventilator with rotary regenerative heat exchanger
IPC: F24F3/14
Filed: 1975-08-13
Abstract: 1511530 Thermally regenerative ventilators SHARP KK 13 Aug 1975 [14 Aug 1974 22 Aug 1974 23 Aug 1974] 33787/75 Heading F4V A ventilator for mounting in an outside wall of a building comprises a housing having internal partitions defining a first duct 4 for flow of room air to atmosphere and a second duct 5 for flow of fresh air to the room, a rotary regenerative heat exchanger 6 through which air in the duets 4, 5 flows in countercurrent, and coaxial fans 10, 12 driven by a common motor 9 and located immediately adjacent air inlets 7, 8 to the duets 4, 5 respectively The heat exchanger 6 includes a matrix made of asbestos capable of transferring heat and moisture, and is rotated by a motor 16. Motor 16 can be cooled by air induced by either fan 10 or 12, which include centrifugal impellers which can be subdivided by central partitions (Figs. 6, 7). The location of the fans 10, 12 upstream of the heat exchanger 6 is stated to produce a silencing effect.
Patent GB-1517214-A (GB)
Title: Rail vehicle brake system
IPC: B60T13/58
Filed: 1975-08-13
Abstract: 1517214 Eddy-current and friction brakes on rail vehicles; automatic brake regulation KNORR-BREMSE GmbH 13 Aug 1975 [24 Aug 1974] 33799/75 Headings F2F and F2E A braking system for a rail vehicle comprises an eddy-current slipper brake 4 having a plurality of electromagnets 16 of which one or more are excitable in accordance with the required braking effort, pressure-responsive switches 13 responsive to a supply 12 of pressure medium and associated (e.g. at 17) with the electromagnets for controlling their excitation, individual switches having different switching pressures so that a range of braking efforts can be obtained as a function of variation in pressure of the pressure medium, a pressuremedium-operable friction brake (not shown) associated with a brake cylinder 3, a forcepressure transducer 20 coupled by a rod 19 with the slipper brake 4 whereby, on excitation of the slipper brake, a braking force is transmissible to the transducer 20, a pressure-medium supply line 33 connected to the transducer to provide a force in opposition to the slipper-brake braking force transmitted to the transducer, and a triple pressure valve 11 connected at 38 to the friction brake cylinder 3 for supplying pressure medium thereto to operate it, and connected at 34 to the transducer to receive pressure medium therefrom when a braking force is transmitted to the transducer, the valve 11 also being arranged to receive, in chamber 36, a supply of pressure medium to act in opposition to the pressure medium received from the transducer 20, whereby the supply of pressure medium to the brake cylinder 3 from the triple valve 11 is controlled so as to increase the friction brake effort concurrently with reduction in brake effort generated by the slipper brake 4 which causes reduction in, or termination of, pressuremedium supply from the transducer 20 to the triple valve 11.  The "required braking effort" is determined by pressure drop in a main air line 6 following actuation of the driver's brake valve which governs a control valve 7 interposed between a line 8 from a pressurized reservoir 9 and a line 10.
Patent GB-898993-A (GB)
Title: Improvements relating to the treatment of cobalt-nickel lateritic ores
IPC: C01G53/00
Filed: 1960-10-03
Abstract: Cobalt is extracted from cobalt-nickel-containing lateritic ore or concentrate of the iron oxide type by leaching with aqueous SO2 until not more than 96% of the cobalt has gone into the solution.  The ore is ground to at least 48 Tyler mesh, and water added to form a slurry having a solids content of from 10% to 50%. The slurry is agitated and maintained between 20 DEG C. and 95 DEG C. and at atmospheric pressure, while gaseous sulphur dioxide or sulphurous acid solution containing between 0,5% and 10% of sulphur dioxide by weight of the solution is added.  To extract from 90% to 96% of the cobalt, the amount of SO2 needed usually corresponds to 1-10 pounds of sulphur per pound of cobalt in the slurry.  After leaching, the solution may be separated from the solids by counter current decontation or by filtration and the cobalt recovered, e.g. by precipitation as cobaltic hydroxide or cobalt sulphide.  The solids residue is treated by known means to recover the nickel, e.g. by selective reduction followed by ammonia leaching or by treatment with CO to volatilize the nickel as nickel carbonyl.  The ore should preferably contain not more than 10% of magnesia or not less than 0,05% of cobalt.  It is possible with some ores to achieve a mechanical concentrate by separating coarse particles having a higher cobalt and nickel content than the fines.
Patent GB-971707-A (GB)
Title: Improvements in or relating to nuclear reactors using an organic fluid as a moderator and as a refrigerant
Inventor: GAUDEMARIS GABRIEL DE
IPC: G21C5/12
Filed: 1961-09-21
Abstract: 971,707. Heating steam boilers by hot liquids; superheaters. COMMISSARIAT A L'ENERGIE ATOMIQUE, and INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. Sept. 21, 1961 [Sept. 21, 1960], No. 33856/61. Heading F4A. [Also in Division G6] In a nuclear reactor an organic fluid e.g. gas oil or heavy fuel oil, is used as a coolant and transfers heat from the reactor core to a liquid, e.g. water, in a heat exchanger, a portion of the oil being withdrawn and burned in a furnace to superheat the steam produced in the heat exchanger, an equal amount of the oil being added to the circuit as is withdrawn. The oil after being heated in the reactor 1 is cooled by water arriving under pressure via the pipe 8 in the heat exchanger 4. A portion of the oil passes into the storage and deactivating tank 13 and pipe 14 from the pipe 12, and is burned in the furnace 10 so superheating the steam passing to the outlet 20 from the heat exchanger 4. An expansion chamber 17 allows the pressure of the oil to be regulated and to allow any gas or vapour present to escape to the furnace 10. The water may be preheated by being circulated in contact with the reactor.