baber/WOPTO huggingface dataset:
Patent GB-1085167-A (GB)
Title: Amplifier regulation
Inventor: BARBER DONALD ROBERT
IPC: H03G3/00
Filed: 1966-05-13
Abstract: 1,085,167. Auomatic volume control. STANDARD TELEPHONES & CABLES Ltd. May 13, 1966, No. 21299/66. Heading H4R. In a pilot-operated automatic volume control device a D.C. voltage derived from the pilot signal by filtering, rectifying, and amplifying, in units 10 and 11 of the Figure, is applied via control circuit 12, fed also with a reference level at terminal 14, and a switching circuit to control the current flow through a field effect transistor 8, and hence the gain of amplifier 2a. Abnormal variations of the received pilot level are detected by the control circuit 13 and cause opening of the switching circuit comprising the field effect transistor 15 so that the low leakage capacitor 16 remains charged to the value it held immediately before the occurrence of the abnormal pilot level, and the gain of amplifier 2a is therefore held constant. The f.e.t. 8 may, as shown, feed a thermistor 4 connected, via a capacitor 5 to stand off D.C., in the gain con trolling circuit of network 3, alternatively an indirectly heated thermistor may be used in the network 3 with its heater current fed via f.e.t. 8, or the f.e.t. 8 may be connected directly in network 3 so that the gain is controlled by variation of the impedance of f.e.t. 8.
Patent GB-725248-A (GB)
Title: Improvements in or relating to gasification of fuels
IPC: C10J3/46
Filed: 1953-07-31
Abstract: 725,248. Gas producers; oil gas generation. KOPPERS CO., Inc. July 31, 1953 [Oct. 23, 1952], No. 21307/53. Classes 55 (1) and 55 (2). Hot products from a gasifier supplied with finely divided fuel which may comprise high and low grade coals, lignite, heavy oils, pitch and tar, are caused to impinge upon part of the surface of a moving bed of solid fuel so as only partially to penetrate it, the gases being removed from the same surface and solid residues also being withdrawn. A dust gasifier 40 is connected to a carbonizer and secondary gasifier 41 so as to cause the hot products therefrom at, e.g. 3050‹F., to impinge upon part 49 of the surface of a bed 44 of solid fuel supported on a moving grate 53. Gases are withdrawn through an outlet 46 and solid residues which may contain 55 per cent carbon through a feeder 50. Steam, e.g. at 950‹F., is introduced through inlets 45 in the bottom of the gasifier. The coke and volatiles both from the penetrated portion 42 of the bed and from the lower portion which is also carbonized and partly gasified react with undecomposed carbon dioxide and steam. The dust gasifier comprises a conical chamber with fuel dustoxygen suspension nozzles mounted by a venturi shaped annular steam nozzle with cooling water jackets on both sides; the residence time of gases in this zone is 0.1-1.5 secs., operating pressures may range from atmospheric to 50 atm. The gas obtained may comprise 44.0 per cent hydrogen and 46.1 carbon monoxide. The angle at which the hot products impinge upon the moving bed may be varied to alter the degree of penetration and their flow may be with, against, or transverse to the movement of the bed. In one construction a rotary grate is employed.
Patent GB-979544-A (GB)
Title: Improvements in or relating to the production of uranium dioxide
Inventor: LLOYD JAMES ELGIE
IPC: C01G43/01
Filed: 1961-06-13
Abstract: <PICT:0979544/C1/1> Uranium dioxide is prepared from uranium trioxide dihydrate by mixing powdered NO3 with water at 80 DEG  C., the amount of water being slightly in excess of that required to form the dihydrate, maintaining the temperature at 80 DEG  C. until the paste so formed has been converted to a dry, solid, and dehydrating and reducing the UO32H2O.  UO3 powder, prepared by spraying concentrated uranyl nitrate into a fluidized bed of UO3 at 250 DEG -350 DEG  C., is fed from hopper 1 to steam-jacketed paddle-mixer 7 where it is mixed with the water, heated by steam in 6, for 20 minutes. A batch of paste is transferred by air blast 8 to belt conveyer 9, having steam heater 10 for drying, and dried material is aged at 80 DEG  C. for an hour in steam-jacketed screw conveyer 11, rotating at say 10 revs./hour.  The UO32H2O is granulated in 13 and then dehydrated and reduced in a fluidized bed, e.g. with N2 and H2 respectively.
Patent GB-1010302-A (GB)
Title: Improvements in or relating to a process for the purification of poly-olefins
IPC: C08F6/02
Filed: 1962-06-04
Abstract: <PICT:1010302/C3/1> Polyolefines containing metallic catalyst residues are purified by first treating the polymer suspension with small quantities of alcohol and thereafter treating the suspension with water in counterflow in at least two stages, the suspension being fed to the lower portion of each stage and rising therein and the water fed to the lower portion of each stage is circulated from the same stage while the water fed to the upper portion of each stage is circulated from the next succeeding stage and/or is fresh water, the proportion of water drawn off from the lower portion of the first stage corresponding to the total quantity of fresh water added to the last stage.  Preferably fresh water is only added in the upper portion of the last washing stage.  In the apparatus shown in the drawing, polypropylene is produced in reactor 1 in benzene and the contents of the reactor are then passed to decomposer 2 where 2 to 5% of n-propanol is added to 80 DEG  C. to convert the catalyst into a soluble form.  The contents of the decomposer are then passed to column 3 which forms the first washing stage.  Used washing water is pumped into the lower portion A1 of the column and it becomes intimately mixed with the polypropylene suspended in the benzene. The benzene containing phase rises upwards and is washed again in the portion A2 with washing water drawn off at the bottom of column 4, the next washing stage.  In the uppermost portion B of column 3, the benzene layer separates from the washing water and is pumped into the bottom of column 4 where it is treated with washing water as in column 3 and then the benzene layer is passed into column 5, the upper portion of which is fed with fresh washing water. The polypropylene can be separated from the benzene by centrifuging or by distillation; in the latter case the benzene distillation may be performed in column 5 by adding steam instead of water, and the polymer obtained has an ash content of less than 0.01%.  The alcohol may be recovered by evaporation of the used washing water. The washing water used may contain acids, alkalis, ammonia, compounds which form soluble complex compounds with the catalyst residues, e.g. oxalates, or surfaceactive substances, e.g. soaps. This purification process can be employed in all polymerization processes employing organometallic compounds and metal salts, e.g. polymerization of olefines using Ziegler catalysts, stereospecific polymerization of styrene and other vinyl compounds according to NaHa and in the poly merization of butadiene and isoprene with metal alkyls.
Patent GB-748488-A (GB)
Title: Improvements in or relating to endless belt conveyor systems
IPC: B65G15/08
Filed: 1952-08-27
Abstract: 748,488. Endless belt conveyers. PATTINSON, G. H. Aug. 27, 1953 [Aug. 27, 1952], No. 21533/52. Class 78 (1). In an endless belt conveyer for the bulk conveyance of wet materials such as gravel, the top face of at least the working run of the belt over the whole or over part of its length is of convex or other cambered or equivalent form in cross-section, the slope of the said face being less than the angle of repose of the particles of the bulk material so that the particles will remain on the belt whilst the liquid in the wet bulk material will drain to one or other or both of the side edges of the belt. The convex form of the belt may be effected by supporting the belt at intervals along its length on sets of three rollers. The belt may be of uniform thickness or it may be thinner at its edges than at its middle and taper in thickness towards its edges.
Patent GB-215567-A (GB)
Abstract: 215,567. Homer, A. J. May 5, 1923. Fuel &c. containers. - The screw-threaded sockets g for securing motor-cycle petrol and/or oil tanks in position, are welded or otherwise attached to the exterior of the tank in a groove or depression i.
Patent GB-244507-A (GB)
Title: Improvements in or relating to methods of and apparatus for assembling prepared toe puffs with boot or shoe uppers
IPC: A43D5/02
Filed: 1924-09-12
Abstract: 244,507. British United Shoe Machinery Co., Ltd., and Ricks, F. Sept. 12, 1924. Uppers, machines for.-A machine for use in assembling prepared toe puffs in uppers comprises positioning means for facilitating the insertion of the puff in the upper and means for fixing the puff in the upper. In the machine shown in Fig. 1, a last with an upper and insole assembled on it is mounted on a treadle-operated last pin 2 and is spring-pressed against a heel abutment 1. A fixed table 4 is mounted above the last and in use the toe end of the upper is turned back on to the table and held by a spring finger 40, which comes into operation when the pin 2 presses the last against the abutment 1, leaving the operator's hands free to insert the puff between the layers of upper material. The front edge of the table 4 is curved so that when the toe cap is turned back a groove is defined between the toe cap and the overlapping edge of the vamp, into which the edge of the puff is butted. A platen 20 which co-operates with the table 4 to press the puff into the upper materials is carried by a bracket 22 on a rod 23 slidable in bearings 24, 25 by means of a treadle cord 28 against springs 29, 30. The bracket and platen normally occupy the positions indicated in dotted lines. On operation of the cord 28, the platen is moved to the right until it is over the table 4, when further movement of the rod 23 lowers the platen stem 21 in the bracket 22 by means of a pin 36 and lever 34. The platen 20 may be heated, or the puff, for example a thermoplastic puff, may be limpened before it is assembled with the upper. In the machine shown in Fig. 3, a press having a table 52 and platen 50 is provided with forwardly-extending ribs 55 spaced apart to support the cone of the last between them. In use a last with an assembled upper is turned to the position shown in dotted lines and supported against the operator's chest while a puff is inserted between the layers of upper material. The last is then supported on the ribs and pushed towards the press until the toe end of the upper is positioned between the table 52 and platen 50, the last being, in this movement, lifted out of the way by a U-shaped guiding member 57. The settling movement of the platen is limited, for example by a spring and stop, so that the greatest pressure is exerted on the rearward edge of the puff and upper. Specifications 18174/13, 2023/15, 114,398, 125,027, 143,310, 197,351, 210,161, 210,849, and 236,988, [all in Class 17 (ii), Boots and shoes, Construction of], are referred to.
Patent GB-232853-A (GB)
Title: Improvements in or relating to apparatus for locking the doors of railway waggons or the like
IPC: E05B65/14
Filed: 1924-09-12
Abstract: 232,853. Ablitt, A. J. Sept.. 12, 1924. Hasp fastenings; fastenings operated by tools. -The staple C of a. hasp fastening for railway wagon doors &c. is turned to engage the hasp plate P after entering the slot therein, and is held in this position by a square portion of its spindle entering the narrow end of a key-hole slot T in a falling plate D guided on studs F on the inside of the door. The plate D drops to locking position when the staple is turned and is raised to free the staple by a lever J operated by a removable key L, which enters a casing G and is Keyed to the spindle of the lever J by a removable disc M entering a slot in the key and spindle. To recover the disc M, the key is turned till the disc drops down into the casing, to which access can be had from inside the door.
Patent GB-1308646-A (GB)
Title: Frequency synthesizer
IPC: H03L5/00
Filed: 1970-05-06
Abstract: 1308646 Frequency synthesizers SCHLUMBERGER OVERSEAS MESSGERATEBAU UND VERTRIEB GmbH 6 May 1970 [10 May 1969] 21723/70 Heading H3F The invention relates to a frequency synthesizer in which the output frequency, e.g. 0-100 MHz is obtained by the subtractive mixing of a stepwisely selectable frequency, e.g. 480-580 MHz and a fixed frequency, e.g. 480 MHz in a final mixing stage 40, the fixed frequency resulting from the additive mixing in an output mixing stage 21 of a particular multiple, e.g. 440 MHz of a constant auxiliary frequency, e.g. 440 MHz and said auxiliary frequency itself. The auxiliary frequency, before being applied to the input of the output mixing stage 21 is amplitude-modulated, i.e. in mixer 22. The arrangement is characterized in that a differential amplifier 45 is connected in the amplitude regulation loop of the synthesizer output frequency, one input 45a of the differential amplifier 45 being supplied with the rectified and filtered synthesizer output voltage, i.e. over rectifier and filter 42. The other input 45b is supplied with the rectified and filtered amplitude-modulated auxiliary frequency in the same phase, i.e. over rectifier and filter 47; the output of the differential amplifier 45 is connected to the control terminal of a continuously gain-controllable attenuator 43 connected between the output mixing stage 21 and the final mixing stage 40. The two rectifier and filter circuits 42, 47 are preferably substantially identical, and their time-constants may be of the same order of magnitude as the modulation frequency period. The output level is controlled either by means of an adjustable attenuator 46 or by means of a D.C. voltage reference source 48 supplying a controllable bias to input 45b of the differential amplifier. The arrangement is such that modulation signals cancel out in the differential amplifier 45, from the control voltage applied to the attenuator 43.
Patent GB-406040-A (GB)
Title: Improvements in ironing machines
IPC: D06F67/06
Filed: 1933-08-03
Abstract: 406,040. Ironing-machines. G. M. CO. M'F'G. CO., Inc., 21st Street, Long Island City, New York, U.S.A.-(Assignees of Rockford, J. R. ; 37, 88th Street, Jackson Heights, Long Island, New York, U.S.A.) Aug. 3, 1933, Nos. 21837 and 21838. Convention dates, Aug. 19, 1932 and June 16, 1933. [Class 138 (ii).] In an ironing-machine having rollers 16 cooperating with beds 20, means for stripping the goods from the rollers as they leave the beds comprise fingers 50 extending between the rollers and the beds, the ends of the fingers on the feed side being resiliently supported and the ends of the fingers on the discharge side being shaped or guided to exert a stripping action on the goods. Several designs for the unsupported ends of the fingers are described, that shown in Fig. 1 for example comprising a projecting portion 51, an inturned portion 52 bearing against the roller periphery and a reverse bend 53. The portion of the finger between the parts 51, 52 may be provided with a reinforcement. In another form a straight portion is provided between the parts 51, 52 and in another form the free end 53 is bent inwardly instead of outwardly. In another form, Fig. 13, an enlargement 14 may be formed on the end of the finger. In all these forms the other ends of the fingers are resiliently supported in a carrier 55 which is removably secured in an overhead angle bar 37, Fig. 9, parallel with the axis of the roller and supported by the side frames of the machine. In the form shown in Fig. 14 the stripping ends of the fingers are depressed by a guide bar 120 carried by strips 121 which are adjustably secured to the side frames of the machine and the other ends of the fingers are threaded through tubular members 95 and secured therein by wedges 98. The members 95 are resiliently supported by the transverse angle bars 37. In another form the angle bars instead of the tubular members are resiliently supported. In the machine shown in Fig. 1 the stripping fingers are provided only on the second and subsequent rollers ; the stripping means for the first roller comprise endless bands 25 which pass around pulleys 31 carried by resilient brackets 40 secured to the transverse angle bars 37, the pulleys being formed with cam-shaped flanges as shown, which rotate with the pulleys and intermittently strike the goods adhering to the bands 25.
Patent GB-218689-A (GB)
Abstract: 218,689. Shipley, B. M. Dec. 21, 1922, [Convention date]. Cash registers; item and operation counters.- Counters are provided to count the items entered in the machine irrespective of their nature, and to register total-taking operations upon a customer counter and the appropriate transaction counter. On the front of the machine are arranged four transaction counters 413, an item counter 414 and a customer counter 415, all of usual construction. The transaction and customer counters are operated by graduated pawls through toggle links straightened by downward movement of the common curved plate' 424, slots in which embrace the connecting pins of the toggle links. The selection of the particular transaction counter concerned is effected by the differential positioning of the stop arm 449 under the control of the transaction keys, this arm serving to prevent the, inward sliding of the toggle links so that these become effective to actuate the pawl when the plate 424 is lowered. This movement of the plate occurs at each total-taking operation by connection through a rocking plate 433 with an arm 437 fixed on a shaft 438 oscillated by the total-taking mechanism and invariably actuates the customer counter 415 the toggle of which is always effective. The item counter 414, operative in adding operations only, is actuated by a thrust member 453 reciprocated by connection with the release shaft 79 of the machine. When the total lever is positioned for total-taking the thrust member is lowered to ineffective position by means of a lever 459 engaging a slot 457 in the member and rocked by connection with the shaft 438 through an arm 465, link 463, guided pin 462 and cam slot 461. Specification 8119/15 is referred to.
Patent GB-862874-A (GB)
Title: Improvements in or relating to axle-boxes notably for tip-waggons
Inventor: BOUVAT-MARTIN JEAN
IPC: B61F15/06
Filed: 1958-07-08
Abstract: 862,874. Axle-boxes. SOC. GENERALE ISOTHERMOS. July 8, 1958, No. 21879/58. Class 12 (1). An axle-box for a railway tipwaggon constructed to prevent leakage of lubricant when the waggon is tipped, or even completely turned, comprises a body 4 which is divided into a substantially toroidal shaped front portion M which is located on the poppet-head side 3 of an axle stub-shaft 2 and communicates with two pocket portions C, D forming an annular breech surrounding the stubshaft and its bearing, the position of the inner surfaces P, Q of the pockets C, D being so arranged that, irrespective of the degree of tipping of the axle box about an axis substantially coincident with the centre of the axle, these surfaces always remain above the level of oil 10 in the box. In this manner the packing seal 9 fitted to the rear portion N of the axle-box is never placed in contact with the lubricating oil. As shown in Fig. 6 the inner walls 5 of the toroidal shaped portion M are shaped to feed oil to an upper lubricating cavity 6 in a bearing- member 7 by means of a splash member, not shown. Specification 764,231 is referred to.
Patent GB-954365-A (GB)
Title: Jet propulsion engine power plant installation for aircraft
IPC: B64D27/10
Filed: 1960-06-22
Abstract: 954,365. Boundary layer control. SVENSKA AEROPLAN A.B. June 22, 1960 [June 27, 1959], No. 21887/60. Heading F2R. [Also in Division B7] In an aircraft (see Division B7) in which the jet engines 10 are mounted on the closure 27 for the cargo space 8, a channel 28 is formed between the jet engine intake 29 and the fuselage to abstract the boundary layer along the fuselage. This passage may be omitted and the intake 39 arranged adjacent the fuselage.
Patent GB-1374955-A (GB)
Title: Process for the manufacture of methylbutenol
IPC: C07C27/00
Filed: 1973-05-08
Abstract: 1374955 2-Methyl-3-buten-2-ol F HOFFMANN-LA ROCHE & CO AG 8 May 1973 [9 May 1972] 21932/73 Heading C2C 2-Methyl-3-buten-2-ol is made by hydrolysing 3-chloro-3-methyl-1-butene and/or 1-chloro-3- methyl-2-butene (which may be obtained by addition of HCl to isoprene), with water in the absence of alkali and distilling off the formed 2-methyl-3-buten-2-ol at up to 30‹ C. under reduced pressure.
Patent GB-1301718-A (GB)
IPC: C07C255/30
Filed: 1970-05-07
Abstract: 1301718 Diaminomaleonitrile SAGAMI CHEMICAL RESEARCH CENTER 7 May 1970 [7 May 1969 7 Aug 1969] 21981/70 Heading C2C Diaminomaleonitrile is obtained by polymerizing hydrogen cyanide in a polar aprotic solvent at 25 to 150C, and in the presence of a basic material as catalyst.
Patent GB-299132-A (GB)
Title: Improvements in or relating to cabinets, kiosks and like housings and shelters
IPC: F16B12/00
Filed: 1927-08-20
Abstract: 299,132. Henley's Telegraph Works Co., Ltd., W. T., and Nichols, W. H. Aug. 20, 1927. Cabinets. - A cabinet for housing electrical instruments has a separate top and bottom connected at intervals around the periphery of the cabinet by bolts extending through tubular spacers b, c, Fig. 1, which are provided with wings constituting the sides or against which the sides may abut. The tubular spacers may be entirely separate with the sides secured to them or may be integral with the sides, various arrangements being shown. The base frame is formed of front and back members 18, interfitting by projections with recesses in side members 19 which are provided with foundation frames 20 secured together by bolts 21 and tubular spacers 22. The recessed portions of the bottom frame members adapted to receive the edges of the side plates have the portions 27 joggled out of the plane of the side plates so as to provide ventilation spaces 28 and corresponding ventilation spaces are provided at the top of the cabinet. The back panel and door are strengthened by external and internal ribs 17 and 16 respectively. The top of the cabinet is formed of a steel pressing 30 and cast iron end members 46 provided with corner pieces 31 for the passage of the tie bolts 32 which are screwed into the base frames and are provided with nuts 34 at their upper ends to make watertight connection with the top of the cabinet. The sides and back of the cabinet which may be of sheet metal, wood or other suitable material extend upwardly at 35 and 36 above the lower end of the top sections. For the support of electrical instruments upper and lower supporting straps 38, 40 are provided, and where necessary, an earthing connection 42 is provided on the bottom frame member. One of the tubular spacers is cut away at the front to afford spaces for the reception of hinge members 43. Locking bolts 44 and a catch 45 operated by cam or the like are provided for the door.