baber/WOPTO huggingface dataset:
Patent GB-546466-A (GB)
Title: Improvements in or relating to a method and apparatus for measuring electrical impedances
IPC: G01R27/02
Filed: 1940-12-06
Abstract: 546,466. Impedance measurements. STANDARD TELEPHONES & CABLES, Ltd., and SECKER, B. Dec. 6, 1940, No. 17374/41. [Class 37] Apparatus for the direct measurement of at least one of the dimensions of an impedance value includes a single four-equal-arm bridge fed with currents at its two opposite pairs of corners in such a manner as to produce in two adjacent arms currents having a ratio equal to that between the unknown and a known impedance. As shown a bridge network comprising four equal resistance arms has one diagonal AB connected as the middle branch of a hybrid coil, the other branches being formed by the unknown impedance Z and a known resistance Ro. The primary of the hybrid coil is fed from an oscillation generator OSC through a potentiometer P1. The second diagonal of the bridge network is fed from the same source through a second transformer. By correctly choosing the transformer ratios and the values of the resistances the ratio between the current in two adjacent arms of the bridge network is made equal to the ratio of the unknown impedance Z to the known resistance Ro. The ratio of the currents is measured by measuring the voltage drops across tapped portions OX, OY of the drums OA, OB, the arm OA being in the form of a potentiometer graduated in terms of the unknown impedance. A voltmeter V is connected to a three-arm fourposition switch SW. This is first set to the first position CAL and the potentiometer P1 adjusted until a predetermined reading is obtained, this point being marked on the dial. The switch is then turned to the second position and the potentiometer OA adjusted until the same deflection is obtained. The numeric of the impedance is then read on this potentiometer. The impedance angle is determined by setting the switch to the third position in which a condenser C1 is included between the tapping X and the voltmeter V, the deflection giving the angle. The switch is then turned to the fourth position and a reading obtained. If this is higher than the marked calibrating reading the angle is positive and if lower it is negative. In a modification the hybrid coil is replaced by a bridge network, one pair of corners of the four-equal-arm bridge network being inserted in one diagonal arm. and the other pair being inserted in the other diagonal arm through an impedance.
Patent GB-515761-A (GB)
Title: Improvements in and relating to apparatus for use in electric testing and measuring
IPC: H03F1/36
Filed: 1938-06-11
Abstract: 515,761. Valve amplifying circuits. MAYO, C. G., and WALKER, H. S. June 11, 1938, No. 17416. [Class 40 (v)] [Also in Group XXXVI] Thermionic valve amplifier apparatus for calibration and comparative measurement purposes in respect of mutual conductance valves comprises cascaded stages with a negative feed-back over a resistor, the ratio of anode current in the last valve to applied potential being inversely proportional to the magnitude of the feed-back resistance. In Fig. 1, resistance-capacitance coupled valves 1....3 have their input and output terminals connected to a five-pin plug 22 for engagement with a standard socket in a valve bridge such as that described in Specification 490,710, [Group XXXVI], the cathodes of valves 1....3 being connected through resistor 26 to the cathode pin 23. Resistor 26 is preferably a decade box, and by inserting different resistance values, the bridge can be calibrated for values of mutual conductance. In another arrangement two pentode valves are employed, the cathode of the first valve being earthed through a resistor offering impedance to the anode supply at 8, 9 and a grid bias battery is employed in the feed-back circuit.
Patent GB-1360951-A (GB)
Title: Sealing means
IPC: F16J15/06
Filed: 1972-04-14
Abstract: 1360951 Joint-making packing CORRUGATED PACKING & SHEET METAL CO Ltd and M J C TOZER 16 April 1973 [14 April 1972] 17458/72 Heading F2B A joint sealing ring comprises a C-section hollow wall 2, the ends 4 of the C being continued towards each other and then turned inwardly within the C and subsequently away from each other to form two opposed substantially U- shaped terminal portions 6. If the portions 6 abut each other they are preferably provided with undulations or grooves in their contact surfaces and/or holes are provided in the wall parts 4 to admit the sealed fluid to the interior of the ring. In a modification, Fig. 2, axial slots 10 are cut in the inner faces of the ring and form spring fingers 12. The ring may be coated with a soft material, e.g. silver, aluminium, gold, P.T.F.E. or rubber. The joint contact surfaces 8 may be increased by forming flats (16, 18, Figs. 3 and 4) thereon. In Fig. 15, a C- section spring 20 comprising fingers 22 separated by a central portion 24 is housed within the ring. In another modification, Fig. 6 (not shown), two helical springs (26) are located within the upper and lower regions respectively of the ring.
Patent GB-182747-A (GB)
Title: Circularly moving hook sewing machine
IPC: D05B57/26
Filed: 1921-04-01
Abstract: 182,747. Fairweather, W., (Singer Manufacturing Co.). April 1, 1921. Lock-stitching by hooks.-In stitch-forming mechanism of the kind described in Specification 143,697 the spool-case retainer 14 is pivoted at 15<1> and can be turned to free the spool-case for removal. It is held in its normal position by a resilient latch 28 adjustably secured to it and adapted to engage a groove 30 in the worksupport. A spring 32 carried by the spool-case retainer engages with the spool-case. Specification 182,547 is referred to in the Provisional Specification.
Patent GB-1443509-A (GB)
Title: Lining and fastening arrangements for walls having surfaces subject to wear
IPC: F16B5/00
Filed: 1975-04-28
Abstract: 1443509 Mixing drums; tube mills TRELLEBORGS GUMMIFABRIKS AB 28 April 1975 [7 May 1974] 17639/75 Headings B1C and B2A [Also in Divisions B3, B8 and F2] To fasten a wear resistant lining element 11 to a wall 10, for example of a concrete mixer or mill drum, the element 11 having an ealstomeric layer 12 and a metal reinforcing layer 13 backing or embedded in the layer 12, a device is used which has at least one knife edge to cut through the elastomeric layer 12 adjacent the edge of the element 11 and to be pressed against the layer 13 to hold the layer 13 to the wall 10 by a fastener such as cooperating nut and bolt. As in Fig. 1 a single knife edge 18 may be formed on a metal strip 17 welded to a stud 15 the strip 17 spanning the gap between adjoining elements 11. Alternatively two knife edges 22 may be formed on a U- shaped sheet metal member 20 as in Figs. 5 and 7, the member 20 serving as a washer (as shown) or being part of a nut. As in Fig. 7 the member 20 may be held down by a nut engaging a stud 27 welded to the wall 10.
Patent GB-781766-A (GB)
Title: Band-knife guard
IPC: F16P1/02
Filed: 1954-06-16
Abstract: 781,766. Machinery guards. BENNETT, A. S. June 8, 1955 [June 16, 1954], No. 17664/34.. Class 80 (4). A guard for a band knife comprises a forked rod B which protrudes through holes C in the machine table just in front of the knife. The guard is acted upon by a spring to maintain its guarding position but is retractable on operation of a pedal through links H, G, F and a supporting rod A. When the work is being cut the weight thereof will hold the guard down, but after the cut is finished the guard will rise automatically unless the operator's foot is kept on the pedal.
Patent GB-480506-A (GB)
Title: Glass-drawing tank
IPC: C03B15/04
Filed: 1937-06-25
Abstract: 480,506. Making sheet glass. FRAZIERSIMPLEX, Inc. June 25, 1937, No. 17738. Convention date, March 29. [Class 56] Relates to the method of making sheet glass by drawing a sheet from a mass of molten glass contained in a tank furnace, as described in Specification 442,178. The walls 10 of the tank are provided with a layer 9 of heat-insulating material, but the insulation is reduced or interrupted at 11 in the plane of the rising sheet S. The glass within the tank is chilled in the plane of the sheet, and the position of the meniscus at the base of the sheet is stabilixed. In a modified construction, the floor of the tank is composed of two parts on different levels and connected by a vertical riser, and the riser is left free of a covering of insulating material. U.S.A. Specification 1,339,229 also is referred to.
Patent GB-1255041-A (GB)
Title: Improvements in coin selection mechanism for coin vending or dispensing machines and amusement apparatus
Inventor: BELLIS ROBERT DAVID
Filed: 1969-04-08
Abstract: 1,255,041. Coin selection mechanism. R. D. BELLIS. 6 April, 1970 [8 April, 1969], No. 17787/69. Heading G4V. The mechanism consists of a plurality of selection units, each comprising three plates hingedly connected together, mounted vertically one above the other, see Fig. 3 (not reproduced) the diameter of a coin selected by each unit decreasing down the stack, with a common coin insertion slot in the uppermost unit. After initial selection by diameter the coins may be further tested for weight, magnetic permeability and rim thickness. In the embodiment described each unit consists of three plates A, B, C (see also Figs. 5, 6, 7, not reproduced); Fig. 1 is a plan view of one unit and Fig. 9 an elevation of plate C assembled to plate B. Plate A is pivoted on a rod 1 and urged by springs 1a against B, screws 2 determining the spacing between them and plate C is similarly pivoted on rod 9 at right angles to rod 1, on the opposite side of plate B. A cradle 8 pivoted on pin 19 with stud 6 engaging slot 6a, adjustable stud 7 and counterweight 18 is positioned in the coin passageway. Coins of sufficient diameter and weight overbalance the cradle and fall on to track 17; coins of insufficient diameter fall through the cradle and pass to a lower selection unit. Coins moving down the track pass a magnet 15, mounted on plate C and extending through an aperture (15a) in plate B, which retains any ferrous discs, and then enter a rim test lever 16, pivoted at 20. If the rim thickness is sufficiently greater than the inner face thickness the coin passes to a shoot 24, actuating the sensor lever of a micro switch 23 that is connected to a counting device. A clearing lever 10 (see also Fig. 10, not reproduced) is slidably mounted on plate B by studs 11 passing through slots (10a) and carries a wheel 12, free to rotate on countersunk stud 13, that engages an inclined track 14 on plate C and causes plate C to pivot when lever 10 is depressed (Fig. 2, not shown) allowing rejected coins to fall to a rejection trough. The clearing levers 10 of each unit are in contact so that on depressing the topmost lever all units are cleared together. The units may be connected together by studs 27 on one unit engaging holes 28 in the bottom flange of plate B of the next unit. Alternatively the units may be provided on the sides with studs (29) and stacked into slots in a back channel (Figs. 8 and 11, not shown).
Patent GB-1224116-A (GB)
Title: Process for preparing peptides
Inventor: JOSHUA HENRY
IPC: C07D207/46
Filed: 1969-04-08
Abstract: 1,224,116. Peptide preparation. MERCK & CO. Inc. 8 April, 1969 [12 April, 1968], No. 17824/69. Heading C2C. Peptides are prepared by (A) treating an amino acid or peptide hydrazide, which is protected at the terminal amino group, with a nitrosylating agent at - 60‹ to 0‹ C., (B) reacting the azide from step (A) with N-hydroxysuccinimide at -60‹ to +20‹ C., and (C) coupling the ester from (B) with a peptide or amino acid at - 40‹ to + 50‹ C. Examples describe the preparation of H-trymet-asp-phe-NH 2 HCl; BOC-met-lys(CBO)-serarg(HCl) - asp - leu - thr - lys(CBO) - asp - arg (HCl) - cys(S - acetamidomethyl) - OEt and BOC - cys(S - acetamidomethyl) - lys(CBO)- asp - gly - gln - thr - asp - cys(S - acetamidomethyl) - tyr - gln - ser - tyr - OEt.
Patent GB-1138005-A (GB)
Title: Separator for removing entrained particles from gases
IPC: B01D50/00
Filed: 1967-04-19
Abstract: 1,138,005. Separating particles from gases; cyclone separator. BLACK, SIVALLS & BRYSON, Inc. 19 April, 1967 [31 May, 1966], No. 18076/67. Headings BIT and B2P. Apparatus for removing entrained solid and liquid particles from a gas stream comprises a housing with a tangential inlet 38 in chamber 18, a bank of filter tubes 32, enclosed in an axial cylindrical chamber 30. and covered with glass wool and cloth, through -which gas flows inwards to enter end chamber 22, whence it passes along channel 44, up through slots 46 therein into central chamber 20 and up through two banks of wire mesh screens (52), downwards into channel 54 and out at 58. Chambers 18, 22 have drain pipes 40, 48 to carry separated and coalesced liquid to sump 50. Chamber 18 has an access door 60. Screens (52) may abut the wall of chamber 30 (Figs. 3, 4, not shown) or be located above or below the wall and extend the whole width of chamber 20. Chambers 18, 20, 22 are separated by partitions 14, 16, and the end closure 36, through which the open ends of tubes 32 extend, may be aligned with or spaced from partition 16. The wall of chamber 30 extends into chamber 18 to shield the ends of tubes 32.
Patent GB-255499-A (GB)
IPC: B23K37/053
Filed: 1926-07-20
Abstract: 255,499. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts Ges.). July 20, 1925, [Convention date]. Welding; welding hoops and rings.-The jaws of an electric butt welding machine are angularly adjustable on shafts so that bent work pieces, bands or rings may be welded without changing the jaws, the angular motion being limited by adjustable stops on the jaws. The jaws a, b are adjustable round shafts c, d, the adjustment being limited by stop screws e, which may serve to adjust the jaws. Each jaw is provided with a clamping lever f which automatically grips the work as the jaws are pressed together to perform the weld. The levers f are pivoted on slides g, which are adjusted on the jaws by screws h, eccentrics h being also provided to effect a quick grip. The work rests on stops m which are adjustable vertically to bring pieces of different widths into a central position so as to effect a uniform heating thereof.
Patent GB-562277-A (GB)
Title: Improvements relating to dynamo electric machines
IPC: H02K5/128
Filed: 1942-12-21
Abstract: 562,277. Dynamo - electric machines. BERESFORD & SON, Ltd., J., and ALLISON, A. Dec. 21, 1942, No. 18136. [Class 35] In a submersible electric motor of the kind in which the inner surface of the stator laminations b is surrounded by stainless steel or other lining f which is supported, at least in part, by an annular iron or other laminated close fitting pole-tip ring h, the laminations i of the ring are formed with a circumferential row of equally spaced holes j of such size that the magnetic reluctance of the ring in the circumferential direction is considerably higher than in the radial direction, and the number of holes is such that at least one hole in each lamination lies opposite each space between adjacent teeth e of the stator laminations. The axes of the holes may be parallel to the axis of the ring but are preferably inclined thereto. The laminations may be assembled in this position by inserting rods through the holes while the laminations are being fitted in position and subsequently withdrawing the rods. Sections of laminations may be inserted in sequence with the holes in the different sections in alignment, or arranged as shown in Fig. 11. The ring is retained between metal bushes m which are supported at their outer ends by annular abutments (not shown) in the form of rings screwed into the ends of the casing a of the motor.
Patent GB-814755-A (GB)
Title: Improvements in or relating to the transfer of zinc vapour from a furnace to a condenser
Inventor: WOODS STEPHEN ESSLEMONT
IPC: C22B19/18
Filed: 1956-06-13
Abstract: 814,755. Zinc distillation. NATIONAL SMELTING CO. Ltd. April 18, 1957 [June 13, 1956], No. 18239/56. Class 82(1) Zinc is produced by smelting zinciferous materials in a furnace to produce a gas containing zinc vapour, carbon monoxide and carbon dioxide from which the zinc is obtained by condensation, the gas leaving the charge at a temperature below that at which the zinc vapour and carbon dioxide exist in stable equilibrium and being transferred to the condenser through a flue the walls of which are held at a temperature above the equilibrium temperature, the gas remaining at a temperature below the equilibrium temperature. In the Figure a blast furnace 1 in which the material is smelted is connected to condenser 2 by a flue 3 formed of a horizontal section and an approximately vertical section formed of a heat and corrosion resisting metal, e.g. an alloy steel containing Cr 18.2 per cent, Ni 38.1 per cent, Si 2.48 per cent, Mn 1.02 per cent, Co 0.08 per cent and C 0.08 per cent. The flue is heated to 1000‹C or over by burners 4 in combustion chamber 5, a stack 6 being provided for combustion products. Alternatively electric resistance heating may be used. The zinciferous material may be charged to the furnace at a temperature not exceeding 600‹C. and coke at a temperature in the range 800‹. to 1000‹C., the zinc-containing gases leaving the furnace at a temperature in the range 800-850‹C. Specification 741,258 is referred to.
Patent GB-481480-A (GB)
Title: Improvements in exhaust silencers for internal combustion engines
IPC: F01N1/02
Filed: 1937-07-02
Abstract: 481,480. Exhaust-silencers. PARKER, R. D., and REBBECK, F. E. July 2, 1937, No. 18394. [Class 7 (ii)] The exhaust is directed through an inlet pipe 3 leading into a chamber I, so as to impinge against a mass 2 of porous, fibrous, granular, or other sounddamping material contained in a closed end of the chamber, the outlet 4 from the chamber being at the opposite end. The mass 2 is held in position by a perforated wall 5, which may be formed with a depression opposite the inlet pipe 3 ; or the pipe 3 may itself be perforated and enter into the mass 2. In multicylinder engines, the exhausts may be directed against sound-damping masses at each end of the vessel 1, which then has an intermediate outlet. The exhausts of several cylinders may be connected to each inlet pipe 3, and several such arrangements are described. In one of these, the inlet pipes 3 each pass through a mass 2 at one end of the vessel and have their open ends opposite the mass at the opposite end. The silencer may be supported by the framework of the engine, either by brackets or by the inlet pipes themselves, so that the vibrations are not transmitted to surrounding objects.
Patent GB-804850-A (GB)
Title: Improvements in or relating to homing arrangements
IPC: F41G7/22
Filed: 1955-06-24
Abstract: 804,850. Automatic steering control systems. SIEMENS & HALSKE A.G. June 24, 1955 [June 24, 1954], No. 18410/55. Class 38 (4). A craft which is automatically homed on to a target, such as the exhaust gases of an aircraft engine, has infra-red sensitive means which respond to infra-red energy emitted from the exhaust. It is required to prevent the craft homing on the sun and the ultra-violet energy from the latter is detected on the craft and is used to either cause the null point of the directivity pattern sensitive means to be directed towards the sun or to disable the infrared receiver when the directivity pattern is at a predetermined angle relative to the sun.
Patent GB-889490-A (GB)
Title: Improvements in or relating to scanning antenna systems
IPC: H01Q3/32
Filed: 1960-05-25
Abstract: 889,490. Aerials; radio direction-finding. WESTERN ELECTRIC CO. Inc. May 25, 1960 [May 28, 1959], No. 18454/60. Class 40(7). A directional aerial system capable of providing signals for automatic tracking comprises a waveguide horn radiator feeding a paraboloidal reflector, with an elongated body of dielectric material mounted between the two for rotation about the horn axis. As described a circular waveguide (not shown) feeds a square-section waveguide horn 10, a rotatable joint being provided. The horn 10 is directed towards a paraboloidal reflector 42 and has an aperture in its upper surface through which energy can pass. The radiofrequency stages of a transducer, which may be a receiver for radio astronomy investigation, are mounted in an enclosure 24. A disc 22 mounts the smaller end of the horn for rotation in the front wall of this enclosure and the larger end of the horn carries disc 14 supported by rollers 16 and 18 so that the horn and reflector assembly can be rotated about the horn axis by motor 36, reduction gearing 20 and belt 38 asnecessary for alignment and tracking. The aerial system is carried on a turntable 12 rotatable by motor 28 for movement in azimuth for the same purpose. To provide a conical scan for automatic tracking an elongated bi-conical body 44 of dielectric material is mounted within the horn 10 so that its axis makes an angle with the horn axis. This body is supported at its centre by an oblique conical structure 46 of material of low dielectric constant mounted for rotation in rollers 48. A motor 50 is provided to drive the support 46 and thus rotate the body 44 round the horn axis. The dielectric material used to form body 44 may be a ferrite and whilst it is not essential to use a bi-conical shape tapering is 'desirable to reduce reflections.
Patent GB-283079-A (GB)
Title: Improvements in and relating to steam traps
IPC: F16T1/28
Filed: 1927-07-12
Abstract: 283,079. Plummer, C. St. C., and Kermode, W. M. July 12, 1927. Steam traps.-Asteam trap of the bucket float type is provided with a discharge valve at the lower end of the discharge pipe which extends into the bucket, the valve being actuated through trip mechanism. The casing 1 is provided with a .detachable cover 2 carrying the mechanism, and with inlet 5 and outlet 30. The bucket 6 carries an arm 8 to which is pivoted a lever 10 mounted on a fixed pivot 11. A projection 12 on the lever 10 is adapted to coact with a projection 13 on a sleeve also mounted on the pivot 11. A second projection on the sleeve actuates the pull rod 15 which operates the discharge valve 20. When the bucket fills and sinks, the valve 20 is opened by means of the levers 10, 15, 23, and the gravityactuated trip lever 16 engages with a corresponding projection on the sleeve 14 to hold the valve open until the bucket is emptied. The valve is held open until the bucket rises and releases the trip lever 16. Renewable baffle pins 28, 29 may be provided in the discharge pipe 21 to break up the discharged jet.
Patent GB-749773-A (GB)
Title: Improvements in or relating to electrical circuits using gaseous discharge tubes
Inventor: PEIRSON DOUGLAS HENRY
IPC: G01T1/18
Filed: 1953-07-03
Abstract: 749,773. Detecting radio-activity. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 5, 1954 [July 3, 1953], No. 18490/53. Class 40 (3). [Also in Group XL (c)] The Figure shows an anticoincidence circuit which is required to furnish an output at terminal 16 when an input is applied only from counter A and not when inputs are applied at both A and B. When counter A alone is activated tube 10 is triggered and an output is produced at 16 after a delay of some 30 microseconds due to the triggering of tube 19. When both counters A and B are activated simultaneously tube 11 is fired first, thus rapidly discharging capacitor 12 so that when after a delay tube 10 fires practically no discharge takes place through tube 10 and no output pulse is produced at 16. Capacitor 12 recharges via resistor 13. Fig. 2 shows an application in which counter A is an end window beta detector and counters B act as detectors of incident external radiations such as cosmic rays. Thus the anti-coincidence circuit of Fig. 1 will count at terminal 16 a betaparticle from a sample S which activates detector A only but not cosmic rays which activate both detectors A and B.