baber/WOPTO huggingface dataset:
Patent GB-569474-A (GB)
Title: Improvements in or relating to arrangements for generating and observing electric pulses
IPC: G01R13/32
Filed: 1943-01-29
Abstract: 569,474. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd., LEVY, M. M., and ELLIOTT, T. W. Jan. 29, 1943, No. 1536. [Class 40 (v)] [Also in Group XXXVI] In an oscillograph for observing repeated pulses or other voltage variations, which are of short duration compared with the interval between them, the time base is provided by a sinsusoidal wave and only the substantially straight portion of the wave is effective, the oscillograph being blocked during the remainder of the cycle. In this way, the pulse may occupy a large fraction of the screen width. As shown in Fig. 1, the sinusoidal time-base voltage is generated at O and is passed through a phase-adjuster PS1 and amplifier A2 to the horizontal deflecting-plates H1, H2 of the oscillograph CRT. The pulses to be observed are applied between the vertical deflecting- plates VI, V2. The sine-wave from O is also passed through a second phase-adjuster PS2 to a pulse generator PG and amplifier A1. The pulse generated at PG is of the form B, Fig. 2, and is fed to an artificial line or delay network DN short-circuited or open-circuited at the far end y to provide a delayed reflected pulse at the near end. The combination produces positive and negative pulses C1, C2 each of which has a width equal to twice the delay of the network. These pulses are applied to a grid G in the tube CRT, to block the beam except during the pulse Cl. By adjustment of the phase-shifters, this period of effective operation of the tube CRT may be arranged to coincide with the substantially straight portion P of the time-base wave A and with the arrival on V2 of the pulses to be observed. The frequency of the oscillator 0 is synchronized with that of the' incoming pulses by hand or by known automatic means. Pulses D1, D2 for use in locating obstacles &c. may be derived from a tapping T on the line DN, the pulse width being equal to twice the delay time between the point T and the far end y of the line. The negative pulse D2 may be suppressed in the amplifier A3, and the shape of the positive pulse D1 may be observed by connecting the terminals 1, 2. Recurrent irregularities F in a voltage wave may be observed in a similar manner.
Patent GB-296942-A (GB)
Title: Improvements in and relating to lever lid tins
IPC: B65D45/28
Filed: 1928-01-17
Abstract: 296,942. Wright, J. B. Jan. 17, 1928. Sealing devices for stoppers.-In a lever lid tin, the outside edge of the ring stamping is continued upwards and is then curled, crimped, &c. inwards as at A to form a continuous ledge above the level of the lid B. The ledge facilitates the removal of the lid by a lever and is adapted to receive the wide ends of a spring strip E<1> which prevents accidental loosening of the lid.
Patent GB-228159-A (GB)
Title: Improvements in vacuum tube oscillation generators for wireless transmission
IPC: H03C1/20
Filed: 1925-01-19
Abstract: 228,159. Westinghouse Electric & Manufacturing Co., (Assignees of Davis, R. L.). Jan. 22, 1924, [Convention date]. Thermionic generators and modulating systems. - In wireless transmission systems employing valve oscillators and valve modulators connected according to the constant-current modulation system, a parallel resonant circuit 11, 12 is introduced between the grid inductance and the grid of the valve oscillators 1, 2. The tuning of the circuit 11, 12 is not critical and may differ by a substantial percentage from the oscillation irequency, its function probably being to adjust the phase of the grid potential into correct relation with that of the plate current. When this is effected, a lower value of oscillating grid potential and a smaller value of inductance in the grid circuit may be employed. Increased stability, and damping of parasitic oscillations, are also effected. The modulating-valves 3, 4 have their plates connected through a choke coil to the same source 14 as the oscillators 1, 2. Specification 148,447 is referred to.
Patent GB-177888-A (GB)
Title: Improvements in lifting jacks
IPC: B66F17/00
Filed: 1921-01-11
Abstract: 177,888. Wood, F. J. Jan. 11, 1921. Apparatus fitted to lifting-jacks.-In screw jacks having means for indicating the weight of the load, the load-supporting member a, Fig. 1, rests on a strong spring b mounted in the lifting- screw c and is graduated as shown, or provided with one element of a scale-and-pointer device as shown in broken lines. In a modification, Fig. 3, the pointer e of a dial g mounted on the screw c is operated by means of a pinion i and a rack h attached to the member a or by a pulley and cable.
Patent GB-571531-A (GB)
Title: Improvements relating to carriages for typewriting machines
IPC: B41J11/22
Filed: 1942-01-20
Abstract: 571,531. Typewriters. ROYAL TYPEWRITER CO., Inc. Jan. 20, 1942, No. 1743/43. Convention date, March 14, 1941. Divided out of 554,633. Addition to 542,419. [Class 100 (iv)] Letter-spacing mechanism. A resiliently-connected carriage-supporting rail 5 is connected resiliently to the frame 17 carrying the escapement mechanism C by U-shaped spring members D<2>. These members are secured by bolts 62 to the rail 5 and by bolts 64 to the frame 17. Each member D<2> carries a clamping device E which can be moved to different positions to adjust the resiliency. The device E consists of clamp plates 38, 39 which are urged apart by a spring 42 and are tightened by a nut 41 on a bolt 40. The clamp plates have a greater bearing surface for the legs attached to the frame 17 than for'those attached to the rail 5.
Patent GB-1128957-A (GB)
Title: Circuit arrangement to stabilize voltage
IPC: H04N3/185
Filed: 1966-01-14
Abstract: 1,128,957. Voltage stabilizers. INTERNATIONAL STANDARD ELECTRIC CORP. Jan.14, 1966 [Jan.20, 1965], No. 1854/66. Heading G3X. A load 5, e.g. a cathode ray tube, is supplied over a rectifier 3 from the secondary winding 2 of a transformer, e.g. a line scan transformer, having a tertiary winding 6 associated with a stabilizing circuit 7 which produces a control voltage varying with voltage fluctuations across the load; this control voltage is effective, by way of the coupling between the tertiary winding 6 and the other windings of the transformer, to correct the said fluctuations whereby the load voltage is stabilized. The circuit 7 may include transistors or thyristors, and suitable arrangements of such are described with reference to Figs. 2 to 6 (not shown).
Patent GB-1499561-A (GB)
Title: Heterojunction devices
IPC: H01L29/861
Filed: 1975-01-16
Abstract: 1499561 Semi-conductor devices UNIVERSITY OF CONNECTICUT 16 Jan 1975 [18 Jan 1974] 1903/75 Heading H1K Heterojunction devices.-A semi-conductor device including a heterojunction comprises two crystallographically compatible semi-conductor materials A, B, 72, 71, Fig. 4, having different energy bandgaps such that the bandgap of material A is less than that of material B, and mirror-smooth surfaces, and being joined together at a junction 70 to form a single crystal, the junction 70 having a width over which transition from atoms of material A to atoms of materials B occurs of less than about 2000 , there being substantially no crossdiffusion of dopants or autodoping of the materials across the junction 70, and the material B having an average resistivity less than 5À10<SP>3</SP> ohm cm. in the direction parallel to the plane of the junction, whereby, in a heterodiode containing the heterojunction, the minority carriers in the material A have a long lifetime and at least one of the following characteristics: (a) sharp current-voltage characteristics, (b) abrupt avalanche breakdown, (c) low junction capacitance. Manufacture.-The heterojunction 70 may be incorporated in a number of stated devices and is formed by epitaxial deposition in an elongate reaction zone 10, Fig. 2, under anhydrous and oxygen-free conditions and in the absence of hydrogen iodide-promoting substances. The zone 10 contains iodine 16 in a source zone 14, a substrate of the material B on a support 18 in a seed zone 20, and germanium 22 in a source zone 21 therebetween. A carrier gas containing hydrogen, an inert gas and a dopant are introduced into the reaction zone 10 and the zones 14, 21, 20 are heated to specified low, high and medium temperatures respectively. Germanium diiodide is produced in the reaction zone 10 and a disproportionation reaction occurs in the seed zone 20 where germanium is epitaxially deposited on the substrate. The pairs of semi-conductor materials include Ge/GaAs, Ge/ZnSe, GaAs/ZnSe, AlAs/GaAs, GaSb/InAs, ZnTe/GaSb, Ge 0À9 Si 0À1 / Ge, CdTe/InSb.
Patent GB-431871-A (GB)
Title: Improvements in or relating to muffles
IPC: F27B9/06
Filed: 1934-01-19
Abstract: 431,871. Muffle furnaces. GIBBONS BROS., Ltd., and GIBBONS, W. E., Dibdale Works, Dudley, Worcestershire. Jan. 19, 1934, No. 1904. [Class 51 (ii)] In a muffle furnace having side combustion chambers divided from the muffle by substantially vertical walls, the lower parts of the latter are formed of refractory material of greater heat conductivity than that employed in the construction of the upper parts of the walls. As shown, applied to a tunnel furnace having side combustion chambers 9, the muffle walls 10 are constructed of upper and lower portions 11, 12 of ordinary refractory material, the bricks 12 of the lower portion each having horizontal through passages 15 and being formed with an inclined seating 17 on which rests a tile 16 of highly conductive material such as carborundum. The tiles 16 extend across the whole of the passages 15 and thus provide, on the tunnel side, spaces which communicate at 14 with vertical passages 13 in the upper wall bricks 11 and permit circulation by convection of the tunnel atmosphere. A modified form of brick 12 is described in which the seating 17 is omitted, a vertical carborundum tile being arranged to hook over a projection on the upper face of the brick 12 and extend downwardly to close the outer ends of the through passages 15.
Patent GB-1060365-A (GB)
Title: Copolymers of olefines and halogen-olefines and process for their manufacture
IPC: C08F214/14
Filed: 1966-01-14
Abstract: Copolymers of alpha-olefines and halogen-containing alpha-olefines of the formula CH2=CH-(CH2)n-CH2X, where n represents an integer in the range of 1 to 15, and X represents chlorine, bromine, or iodine are made by copolymerizing the monomers either together or sequentially, in the presence of a catalyst system comprising:  (1) TiCl3 or TiCl4, (2) an aluminium trialkyl and/or a halogen-containing organo-aluminium compound, and (3) an aliphatic or aromatic ether and/or an aliphatic or aromatic tertiary phosphine.  The copolymer may be aftertreated to replace some of the halogen atoms by amino groups.  The alphaolefin may be ethylene, propylene, butene-1, 3-methyl-butene-(1), pentene-(1), 4-phenyl pentene-(1), 4-phenyl butene-(1), 5-phenyl pentene-(1), hexene-(1) or styrene.  The copolymerization may be effected in bulk, or in the presence of a hydrocarbon or halogenated hydrocarbon solvent or diluent.  The copolymers are recovered by conventional "low-pressure" techniques. Exemplified copolymers are alternating and block copolymers of propylene with 5-chloropentene-1, propylene with 11-chloroundecene-(1), ethylene with 5-chloropentene-(1), propylene and 4-chlorobutene-1, propylene and 11-bromoundecene-1, and propylene and 5-iodopentene-1. The halogen atoms in the copolymers may be replaced by aniline or morpholine groups, and the treated copolymers formed into ribbons, fibres, filaments, films or sheets which can be subsequently dyed with acid dyestuffs.
Patent GB-799930-A (GB)
Title: A cyclic electronic counting circuit arrangement
Inventor: DUUREN HENDRIK CORNELIS ANTHON
IPC: H03K23/82
Filed: 1955-01-21
Abstract: 799,930. Electronic counting apparatus. STAATSBEDRIJF DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. Jan. 21, 1955 [Jan. 27, 1954], No. 1963/55. Class 106 (1). In an n-tube cyclical electronic counter of the kind in which a pattern of p " on " states and q " off " states is advanced cyclically (p+q=n), mutual locking of the tubes in a stable combination of states is effected by n locking elements, arranged cyclically, each connecting the anodes of a tubes with the grids of b other tubes, where a - b = p - q. In a first 6-state embodiment, Fig. 3, in which two adjacent tubes are always on and the remainder off, each locking element, for example the first, connects one anode U1 with three grids G3, G4 and G5 via diodes S51, S11, S21 and S31 respectively, and each locking element is such that when its associated anode is down (i.e. when the tube to whose anode it is connected is conducting) the three associated grids are held down, thereby preventing conduction in the tubes containing the associated grids. Shift of the pattern (which is of course XXOOOO) is effected by six switching elements, the first of which comprises two diodes S01 and S61, which are conditioned by the tubes of the counter (each being connected to one anode via an RC delay network) and which when negatively pulsed on line U0 by an input tube O which receives positive counting pulses P, force the counter via the dotted connections to assume a different stable state. With the dotted connections XW shown in Fig. 3, each input pulse P will cause the pattern to advance one step, i.e. from XXOOOO (say) to OXXOOO, but by connecting the points X and W differently it can be arranged that each input pulse advances the counter two or even three steps, i.e. from XXOOOO to OOXXOO or from XXOOOO to OOOXXO. In this embodiment, Fig. 3, a and b have the values 1 and 3 respectively, but any values having a difference of - 2 could be used, and in particular the Specification gives the connections for the values 2 and 4. In a further embodiment, Fig. 5, which is essentially similar to that of Fig. 3, with the exeption that whereas in the embodiment of Fig. 3 only one counting sequence based on the pattern XXOOOO is possible, two sequences are possible based on the patterns XXXXOOOOOandXOOXOOXOO. It is stated that if 3 (a+b) > p+q, then only one sequence is possible and that if this condition is not satisfied (because of economic considerations) undesired sequences can be suppressed by including an addition locking circuit for each undesired sequence, which, when the counter attains a particular state in the undesired sequence switches the counter to a state in the desired sequence. In the case when n is odd it is stated that the locking diodes can be replaced by resistances. Specification 794,190 is referred to
Patent GB-389234-A (GB)
Title: Improvements in combined coinfreed weighing and delivery machines
IPC: G07F17/04
Filed: 1932-01-22
Abstract: 389,234. Combined coin-freed weighing and delivery apparatus. PEARSE, W., 212, Brighton Road, Purley, Surrey. Jan. 22, 1932, No. 1970. [Class 27.] In a combined coinfreed weighing and delivery machine adapted, for each inserted coin, to indicate the weight of a person and to be actuated to deliver goods, in order to prevent the machine frombecoming jammed by an accumulation of coins should the delivery drawer not be actuated, eventually coins released by the weighing-machine freeing mechanism are diverted from passing to the drawer-releasing mechanism, when a coin is in position to release the delivery drawer. A coin h<1>, Figs. 2 and 3, released from the weighing mechanism passes down a shoot e to a pocket i on a delivery drawer g, the projecting edge of the coin, as it is drawn over a table j, causing the removal of a packet of goods in known manner. If the drawer is not actuated, the next coin h<2> rests on top of the coin h<1> and engages the lower nose k<2> of a pivoted weighted switch lever k to rock the lever and cause an upper inclined nose k<3> to enter the shoot e. The nose k<3> diverts any further coins entering the shoot e to a lateral shoot m leading to an outside receptacle or to a till.
Patent GB-254212-A (GB)
Title: Improvements relating to books provided with an index at the side or end of the pages
IPC: B42F21/00
Filed: 1926-01-25
Abstract: 254,212. Blunden, A. G. Jan. 25, 1926. Covers; indexing.-In a book provided with a stepped index e at one edge, damage to the exposed portions of the leaves and the unsupported part of the cover d is prevented by attaching to the inside of the cover d, or one of the pages, a strip a of cardboard, papier mÔchÚ, wood, or similar material shaped to engage the index e. The strip a is attached by adhesive or rivets.
Patent GB-431155-A (GB)
Title: Apparatus for playing games
IPC: A63F1/18
Filed: 1934-01-22
Abstract: 431,155. Indoor games. CALAME, C., II, Rue des Feutriers, Beauvais, Oise, France. Jan. 22, 1934, No. 2164. Convention date, Jan. 3. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 9, 1934.] [Class 132 (ii)] In apparatus for playing games wherein combinations of scores on a series of rotatable discs are displayed at apertures in a casing, the discs are mounted on spindles 13 and are actuated by a series of racks 17 mounted on a carriage 20 operated by a pusher 75, means being provided for rendering one or more of the racks inoperative. Such means comprises pushbuttons 91 which move selected racks transversely of the carriage 20, spring catches 84 holding the racks in the inoperative position until the catches are released by moving a crossbar 87.
Patent GB-930744-A (GB)
Title: Method and apparatus for determining vapour pressures
IPC: G01N27/62
Filed: 1962-01-22
Abstract: 930,744. Determining vapour pressure. BRITISH PETROLEUM CO. Ltd., A. J. GROSZEK, and G. H. BELL. Jan. 22, 1962, No. 2218/62. Class 106 (2). The (low) vapour pressure of an organic sample is measured by passing a stream of inert gas, such as nitrogen, through a temperaturecontrolled chamber 10 containing the sample, then adding hydrogen through valve 18 and burning the mixture in a flame ionization detector comprising a platinum jet 16 and collector 17, the carbon-ion conductivity of the flame path between which is measured by means of a current measuring unit 22 and recorded by a pen-recorder 23. The rate of evaporation of the sample in chamber 10 may be increased by packing the chamber with sand wetted by the sample to give a large area of contact with the nitrogen stream. The apparatus may be calibrated using a standard sample of known carbon number given by mass spectrograph analysis, or of known molecular weight.
Patent GB-192400-A (GB)
Title: Improvements in gyro compasses
IPC: G01C19/40
Filed: 1922-02-22
Abstract: 192,400. Sperry Gyroscope Co., (Assignees of Mills, C. B.). March 15, 1921, [Convention date]. Tell - tale apparatus.-Relates to the operation of repeaters from a follow - up element which is of the kind described in Specification 110,046 to which a continuous oscillation is imparted. To prevent the transmission of the oscillations to the repeater a lost motion device is incorporated in the transmitter so that only directive movements are transmitted. The pinion 2 driven by the gear 3 on the follow-up element carries a plate 4 adapted to engage with one of the pins 6, 7 secured to the cam-member 5. The plate can oscillate between the pins without turning the member 5. This member has a number of projections 8 adapted to operate rollers 11 to open the contacts 14 arranged in the circuit of the step-by-step repeater motor, the number of projections being such that a complete turn of the member 5 produces more than one complete turn of the motor. Specification 177,153 also is referred to.
Patent GB-254614-A (GB)
Title: Improvements in gauging machines for flexible sheet material
IPC: G01B5/06
Filed: 1926-01-28
Abstract: 254,614. Rayner, G. F., (Harding-Walcott Co.). Jan. 28, 1926. Linear-dimension ganges.- The average thickness of a sheet of leather is determined by a plurality of feeling mechanisms which engage the sheet at various points. The sheet is fed on to a table 14 which is given an up-anddown motion by means of connecting rods 41 and cranks 38 driven from a motor 25 to bring the sheet against members 51 carried by plungers 49 working in lugs 48 on a frame 47. The plungers 49 are arranged in pairs, as shown in Fig. 2, and each plunger is connected by levers 91, 93 pivotally mounted on brackets 86, 88 respectively, to links 83, 84 depending from a beam 82. Pairs of beams 82 are suspended from beams 80 and these beams in turn are suspended from beams 78. Finally, the motion of the plungers is transmitted to a beam 76 which is suspended from a spring 75 by means of a rack 67 engaging a pinion 60 on the spindle of a pointer 65. The movement of the pairs of plungers is multiplied by means of the levers 91, 93, and the average movement of the whole of the plungers is indicated on a dial 61, which is calibrated according to requirements. A dwell is imparted to the table at the end of its strokes to enable the operator to introduce the sheets. According to a modification, the feeling devices are adjustably mounted in frames to enable the area to be covered to be varied, and the averaged movement is transmitted to a pivoted bar provided with a curved rack engaging a pinion on the pointer.
Patent GB-1049793-A (GB)
Title: Improved rodenticidal compositions
IPC: A01N25/00
Filed: 1964-01-21
Abstract: A rodenticidal composition contains at least 0.0005% by weight of a blood anticoagulant and at least 0.1% by weight of a vitamin C antagonist.  Specified blood anticoagulants are warfarin, bis-hydroxycoumarin, ethyl bis-coumacetate, cyclocou marol, phenprocoumon, 2-pivalyl-indane-1,3-dione, 2-(p-anisyl) indandione, heparin, 1-phenyl-3-pyrazolidone and diphenadione. Specified antagonists are D-glucoascorbic acid, a -glucoheptonolactone and g -galactonolactone.  The composition is preferably in the form of a rodent bait or diet.
Patent GB-304736-A (GB)
Title: Method of providing wire cores with a metallic covering
IPC: H01B13/26
Filed: 1929-01-25
Abstract: 304,736. Metallges. Akt.-Ges. Jan. 25, 1928, [Convention date]. Cased forms; electric conductors.-In order to provide wire cores with a metallic covering particularly for producing a smooth surface and reducing corona action in a high tension cable of the type having a centre of twisted steel wires surrounded by layers of wires of aluminium or aluminium alloy, the wire core is enclosed in an aluminium or copper shell formed from one or more sheet strips which are heated to welding temperature, and the butting edges joined by pressure welding, preferably by means of pass rolls. In the embodiment, a cable a is run through the pass of a rolling mill, and an aluminium strip b, preferably heated to the welding temperature, is unwound from each of the reels c, d, being pressed by the rolling-mill on to the cable. The seam of the welded edges may be rolled down, turned over, cut or hammered, or the seam may be bent over or pressed into the cable by rolls g, h.
Patent GB-241071-A (GB)
Title: Improvements in obtaining ammonia from synthesis gases
IPC: C01C1/04
Filed: 1925-01-30
Abstract: 241,071. Synthetic Ammonia & Nitrates, Ltd., Slade, R. E., and Gordon, K. Jan. 30, 1925. Ammonia, catalytic production of from nitrogen and hydrogen.-The ammoniacal gases leaving the reaction chamber are passed at A into a tower X where they are treated under pressure with water or dilute ammonia solution to produce a solution containing 50 per cent. or more of ammonia. The solution may be cooled, as at D, and is then passed through reducing valves E, whereby the pressure is reduced to atmospheric, into a vessel Y. The ammonia evolved on the reduction in pressure may be absorbed at atmospheric pressure in a tower Z or otherwise utilized. The gases leaving the tower X contain a little ammonia and, before being returned to the reaction chamber, may be dried as described in Specification 240,350.