baber/WOPTO huggingface dataset:
Patent GB-866950-A (GB)
Title: Improvements in or relating to nuclear particle discriminators
Inventor: OWEN RICHARD BRUCE
IPC: G01T1/208
Filed: 1958-09-12
Abstract: 866,950. Nuclear particle discriminators. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 31, 1959 [Sept. 12, 1958], No. 29359/58. Class 40(3) [Also in Group XL(a)] In a scintillation counter different particles are discriminated by the different light pulse shapes produced thereby in scintillators (see Group XL(a)). Resistor R 1 , Fig. 1, is adjusted so that high currents from the last dynode of the photomultiplier 1 are space charge limited. Scintillation pulse shapes for nucleons n and electrons or gamma rays γ are shown in Fig. 2. Part (a) of the pulse which is the same for n and γ causes a high current which being space charge limited causes more electrons to arrive at than to leave the last dynode which goes negative. During part (b) there is no space charge limitation and more electrons leave than arrive sending the dynode positive. Resistor R 13  is large enough to integrate the charge on the dynode to provide pulses the amplitude and sign of which therefore depends upon the relative areas of parts (a) and (b). Electrons or gamma rays γ cause small positive or negative pulses and nucleons large positive pulses which are selected by the discriminator 4. The total pulse rate may be obtained from the penultimate dynode which is not space charge limited. The discriminator level is set by connecting the outputs from the last two dynodes to the X and Y plates respectively of an oscilloscope to determine the minimum height of nucleon pulses. Other scintillators are described for making other discriminations including a compound scintillator one part of which responds to one type of particle and one part to the other. The space charge limited dynode need not be the last. Specifications 823,263 and 862,331 are referred to.
Patent GB-380969-A (GB)
Title: Improvements in or relating to telephone or like electric cables
IPC: H01B11/02
Filed: 1931-10-22
Abstract: 380,969. Telephone &c. cables. WILLIAMS, W. P., 24, Southampton Buildings, London.- (Hackethal- Draht-Und- Kabel-Werke Akt.-Ges. ; Staderlandstrasse, Hanover, Germany.) Oct. 22, 1931, No. 29378. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 23, 1931.] Drawings to Specification. [Class 36.] To prevent cross-talk between adjacent quads of a communication cable having D-M quads, the stranding pitches of the two pairs in each quad are interchanged at regular intervals, and adjacent quads are formed with different pitches which are so chosen that all of the quads have the same capacity to earth. The interchanges of pitch between the pairs preferably takes place several times in a manufacturing length of quad.
Patent GB-981770-A (GB)
Title: Improvements in or relating to a device for measuring the temperature in melting or refining furnaces
IPC: G01K1/12
Filed: 1963-07-24
Abstract: 981,770. Measuring electrically. BOT BRASSERT OXYGEN TECHNIK A.G. July 24, 1963 [July 25, 1962], No. 29383/63. Heading G1N. [Also in Division H1] A temperature measuring probe for a furnace comprises a sheath tube 1, containing a thermocouple, and a water-cooled lance consisting of a carrying tube 3 having an external casing of highly refractory material, e.g. bricks 6, 6<SP>1</SP>, 6<SP>11</SP>, at least over its lower portion, an inner tube 2 for the thermocouple leads, and an intermediate tube 4 for circulation of the coolant. This arrangement protects the leads from damage and from temperature changes. Quartz tube 1 is sealed into carrying tube 3 with asbestos 8 and the lower end of the lance is insulated at 9. The portion of the lance outside the furnace need not be encased in bricks 6, 6<SP>1</SP>, 6<SP>11</SP>.
Patent GB-698037-A (GB)
Title: Improvements in or relating to apparatus for controlling aircraft
IPC: G05D1/08
Filed: 1948-11-12
Abstract: 698,037. Automatic control systems. WEST INGHOUSE ELECTRIC INTERNATIONAL CO. Nov. 12, 1948 [Dec. 11, 1947], No. 29410/48. Drawings to Specification. Class 38 (iv). The subject-matter of this Specification is in the main identical with that of Specification 698,033, but involves the following modifications : (a) Operation of the hand wheel to initiate turn of the craft moves a pair of potentiometers from a central position. One potentiometer is directly operated and the second is operated through a dash-pot link. A voltage thus appears initially between the slider of the second potentiometer and its centre-tap which serves to bias the bank gyro and produce banking suited to the turn. This effect, however, disappears as the second potentiometer is re-centred by springs and a voltage then appears between the sliders of the two potentiometers which serves to bias the turn and pitch gyros to produce the turn and the necessary up-elevator. (b) A relay which is energized by the voltage obtained from a potentiometer operated by the ailerons, and may be slow-to-release, delays the energization of the electromagnet which locks the rotor of the receiver of the synchronous transmisson between the directional gyro and the rate of turn gyro during straight flight. The craft is thus allowed time to reach a stable condition after a turn. The relay may be energized by the voltage biasing the bank gyro or the voltage biasing the turn and pitch gyros at (a) above. Instead of a relay a switch operated by the rudder, ailerons, elevators or by the hand wheel through the dashpot link may ensure the necessary delay. Specifications 698,032, 698,034 and 698,036 also are referred to.
Patent GB-1500915-A (GB)
Title: Dual hydraulic braking systems for vehicles
IPC: G01L13/02
Filed: 1974-07-03
Abstract: 1500915 Indicating brake failure GIRLING Ltd 20 June 1975 [3 July 1974] 29417/74 Heading F2F A differential pressure warning indicator comprises a piston 7 which is displaceable to actuate a switch operating member 25 through a lever 17 and two opposed diaphragms 8, 9, each engageable with a respective end of the piston 7 and with the wall 11, 12 surrounding the piston bore of a chamber 3, 4 connectible with a respective hydraulic braking circuit. When a fault in a circuit has been repaired the restored pressure, acting on the full effective area of the outwardly displaced diaphragm, centralizes the piston 7. The switch operating lever 17 is pivoted in a recess 18 of the housing, and in a bore 16 of the piston and is urged by a spring-loaded piston 20, which produces a friction force on the adjacent lever end, so that a predetermined pressure differential is needed to displace the piston, and prevents the piston returning to its mid position until a fault has been repaired. In a modification (Fig. 3, not shown) the piston is slidable in a sleeve (32) located in a blind bore (31) of the housing by an apertured convex disc (34). In a further modification slotted discs, which assume a conical shape when the piston is displaced, are disposed between the diaphragms and the walls 11, 12 of the housing 1 and engage the spigotted ends of the piston 7.
Patent GB-229020-A (GB)
Title: Improvements in or relating to electric resistances, inductances, condensers and the like
IPC: H01C3/20
Filed: 1923-11-22
Abstract: 229,020. Bradley, J. H. Nov. 22, 1923. Composite units. - In electric resistances, inductances, condensers, and the like, and combinations of these, of the kind comprising a number of units between conductive supporting brackets, any one unit being removable or replaceable without disturbing any other unit, two relatively-movable brackets, one rigid and one spring, are provided for each unit. In each unit, applicable for example to grid leaks for thermionic valves, wire may be wound on a bobbin comprising annular insulating plates 9 with circular cooling holes and joined by an insulating hub 6, the plates 9 and outer annular metal plates 10 being held on the hub 6 by outer insulating rings 7 screwed to the hub 6, and by lugs 11 on the plates extending through slots in the rings 7 to prevent relative rotation of the plates and rings. The ends of the wire are soldered to the plates 10 and the units are mounted on an insulating panel 2 by rigid metal brackets 3 and spring brackets 4 held in position by screws 5 and contacting with the plates 10 to form the circuit connections. The rigid brackets 3 have circular apertures to engage the rings 7, and the spring brackets 4 have oval apertures. Lugs 14 may provide intermediate tappings. The units may be mounted coaxially in a straight line, in a circle, or in other arrangement, and are removed and replaced by lateral movement after spring- ing aside the brackets 4. To allow of variation of the resistance &c., the brackets 3 may contact, on removal of a unit, with the opposite brackets 4 and so complete the circuit,
Patent GB-1468198-A (GB)
Title: Arc power supplies
IPC: B23K9/06
Filed: 1974-07-03
Abstract: 1468198 Automatic control of arc welding AIR PRODUCTS & CHEMICALS Inc 3 July 1974 [11 July 1973] 29545/74 Heading G3R In a DC arc system, the volt-ampere characteristic is regulated by measuring the arc current and voltage and summing corresponding signals with a reference signal to form a power supply control signal. The proportions of current and voltage feedback are simultaneously adjustable to give continuous control between constant current and constant voltage modes of operation. As shown, a welding arc 26 is produced by a three-phase source 11, transformer 12, and controlled rectifiers 14. The arc current and voltage are measured by feedback units 45, 46 each including a potentiometer, the movable contacts of which are ganged together so that the relative amounts of current and voltage feedback to an amplifier 42 are simultaneously adjustable. The amplifier 42 also receives a set reference voltage from a circuit 40, and supplies control signals through a PI regulating amplifier 52 to a firing circuit 55 for the rectifiers 14. A circuit 53, for ensuring the supply of increased power when the arc is first established, includes a relay supplied by a switching transistor and controlling contacts in a feedback path of the amplifier (52), Fig. 3 (not shown).
Patent GB-298650-A (GB)
Title: Improvements in coating or plating apparatus
IPC: B29C41/14
Filed: 1928-10-13
Abstract: 298,650. Anode Rubber Co., Ltd., (Assignees of Wilson, G. F.). Oct. 13, 1927, [Convention date]. Latex, coagulating.-An article 12 to be coated with rubber or other substance is supported by a vertically movable frame 14 carrying driving mears capable of rotating the article when submerged in a. vat 10 or when raised to any height. The frame 14 is provided with brackets 16 slidable on guides 17 and provided with counterweights 18. The driving mechanism comprises a worm-wheel 30 secured to a shaft 28 connected to a shaft 41 through an intermediate shaft 38 provided with bevel gears mounted in a curved frame 24. A bell-shaped member 46 and a washer 47 are secured on the shaft 41 to form a seating for the article 12. The frame 24 is enclosed in a flexible rubber sleeve 51, the medial portion of which is corrugated and reinforced by a spring 50. The lower end of the sleeve 50 fits tightly over the member 46 and the upper end loosely embraces a bearing sleeve 22; the sleeve 50 thus rotates with the article 12. The opposite end of the article 12 is held by a similar device not provided with gearing, mounted in a bracket 52 pivoted at 53 and normally urged downwardly by a spring-actuated lever 54. A compressed-air pipe 56 provided with nozzles 60 and a valve 59 is mounted beneath the frame 14; bubbles adhering to the article 12 after immersion are removed by raising the frame and directing the air-jets over the surface of the article. The worm-wheel 31 is driven by a worm 31 connected by a universal joint 33 with a shaft 34 provided with a slip-joint 35 and connected by a universal joint 36 with a source of power. When the coating is to be applied by electrodeposition the article 12, is connected to one pole through the gearing which is lubricated with grease having a high graphite content to improve the conductivity.
Patent GB-455171-A (GB)
Title: Improvements in or relating to obstetric instruments
IPC: A61B17/44
Filed: 1935-10-28
Abstract: 455,171. Obstetric forceps. PRICE, D. T., High Street, Castle Cary, Somerset. Oct. 28, 1935, No. 29750. [Class 81 (ii)] The fenestrated blades 11 of obstetric forceps are formed with the usual longitudinal curve but are symmetrically shaped across their width and are pivotally mounted on the shanks 2. As shown the blade 11 is forked at its lower end to engage over a reduced and shouldered portion 5 of the shank end and is held thereto by a pivot bolt 7. Pivotal movement is limited to about 30‹ on each side of the centre line by a pin 13 passing through the blade and working in an arcuate slot 12 in the shank end, or by a proj ection on the shank working in an arcuate recess in the blade. The shanks 2 are formed with handles each having a hook 3 to engage the complementary shank after positioning.
Patent GB-842322-A (GB)
Title: Aminoguanidine derivatives
Inventor: BIRTWELL STANLEY
IPC: C07C281/18
Filed: 1956-10-01
Abstract: The invention comprises guanidine compounds of the general formula: <FORM:0842322/IV(b)/1> (wherein R1 represents an aryl radical of not more than 10 carbon atoms, optionally substituted by alkyl, alkylamino, dialkylamino or acylamino radicals or halogen atoms, and R2 and R3 represent alkyl, dialkylamino or phenyl radicals or jointly form with the adjacent carbon atom a homocyclic ring), and the manufacture thereof by interaction of an aminoguanidine of the formula:  <FORM:0842322/IV(b)/2> or an acid addition salt (e.g. hydrochloride, hydrobromide or hydriodide) or quaternary ammonium derivative thereof, with a carbonyl compound of the formula: R2-CO-R3 or a functional derivative (e.g. bisulphite compound) thereof, advantageously in the presence of an inert diluent or solvent (e.g. water or a lower aliphatic alcohol). Examples describe the preparation of compounds containing various combinations of the following substituents: R1: phenyl, 4-methyl-, 4-ethyl-, 2:3-, 2:4- and 3:4-dimethyl-, 2:4:5-trimethyl-, 4-chloro-, 4-bromo-, 4-fluoro-, 2:4-dichloro-, 4-chloro-2-methyl-, 4-acetylamino- and 4-dimethylamino-phenyl, and 5:6:7:8:-tetrahydro-2-naphthyl; <FORM:0842322/IV(b)/3> a -methylbenzylidene, cyclohexylidene, 5-diethyl-amino-2-pentylidene, isopropylidene, a -methyl-butylidene, 2-butylidene and 1:3-dimethylbutyli-dene. Salts (hydrochlorides, hydriodides and salicylates) of certain of the products and the methiodide of N1-4-dimethylaminophenyl-N2-a -methylbutylideneaminoguanidine are describ-ed.  The Provisional Specification comprises compounds of the general formula: <FORM:0842322/IV(b)/4> wherein R1 represents a hydrocarbon radical, optionally substituted, R2, R3 and R4 represent hydrogen or hydrocarbon radicals, optionally substituted, and R5 and R6 represent hydrocarbon radicals, optionally substituted, or jointly form with the adjacent carbon atom a homocyclic or heterocyclic ring, provided that when R6 represents a carbethoxymethyl radical and R5 a methyl radical, then R1 and R3 do not both represent phenyl, p-tolyl or b -naphthyl radicals.  Additional compounds exemplified are N1-3:4-dichlorophenyl-, N1-4-hydroxyphenyl-and N1-3-chlorophenyl - N2 - isopropylidenaeminoguani-dine.  Specification 842,325 is referred to.
Patent GB-206528-A (GB)
Title: Improvements in the construction of floating vessels
IPC: B63B3/14
Filed: 1922-08-09
Abstract: 206,528. Jenkins, T. Aug. 9, 1922, Frames and framing.-In longitudinally-framed ships the plates of the deep transverse frames in both single and double bottoms have the central portions cut out for the accommodation of continuous longitudinal girders which may be of rolled section or fabricated. In the form shown in Fig. I, flanged plates a, c are secured to the rolled steel keels on girder d and continuous margin plate f respectively and a central plate b is connected to the plates a, c by elements which constitute a deep transverse frame-member and comprise transverse top and bottom angle-bars connected by a system of cross-braces e. The longitudinal framing consists of a plate l secured in a central slot in the plate b and attached to the plate in the adjacent transverse frame by cross-braces g, Fig. X, or square braces l. Intermediate longitudinal stiffeners h are fixed to top and bottom angle-bars of transverse frames. In modifications, the cross-braces are replaced by deep plates spaced for inspectional purposes or the plates a, c may be made considerably deeper but leaving spaces which are bridged at top and bottom by joggled plates fixed to top and bottom angle-bars of the transverse frames. In another form, a single bottom comprising deep longitudinal T-beams d, Fig. VII, stiffened transversely by channels which are also connected to secondary longitudinals e which pass through central slots in transverse plates b connecting to the main longitudinals. The stringers f likewise pass through slots in the transverse frames m and a similar construction is adopted in the case of the central longitudinal bulkhead. Flanged brackets q stiffen the posts u, t and girders o, s and the deep framing is stiffened by longitudinal girder channel bars.
Patent GB-1493248-A (GB)
Title: Copolymers of cyclopentene and dicyclopentadiene
IPC: C08G61/08
Filed: 1974-11-01
Abstract: 1493248 Copolymers of cyclopentene and dicyclopentadiene B F GOODRICH CO 1 Nov 1974 [5 Nov 1973] 30021/77 Divided out of 1493247 Heading C3P Copolymers of cyclopentene and dicyclopentadiene comprise 35 to 98% by weight of dicyclopentadiene and 0À01 to 0À3 mole per mole of cyclopentene plus dicyclopentadiene of at least one acyclic monoolefin or a non-conjugated acyclic polyolefin containing up to 12 carbon atoms and having at least one hydrogen on each double bonded carbon atom. The exemplified copolymers are prepared using butene-1 as the monoolefin and a catalyst comprising WCl 6  and AlEt 2 I and combined with t-butyl p-cresol.
Patent GB-666878-A (GB)
Title: Improvements in hydraulic systems for controlling agricultural implements
Inventor: SENKOWSKI ALEXANDER
IPC: A01B63/10
Filed: 1948-11-19
Abstract: 666,878. Hydraulic transmission of power. FERGUSON, Ltd., H. Nov. 21, 1949 [Nov. 19, 1948], No. 30102/48. Class 69 (ii) [Also in Group XXVIII] In a hydraulic system of the type used on agricultural tractors such as those sold under the Registered Trade Mark "Ferguson," for the control of attached implements (not shown) comprising a pump 1, a piston and cylinder device 21 operable by liquid from the pump for raising or lowering the implement, a piston valve 3 for controlling opposed ports 14 for releasing oil from the device and means, such as the duplex lever 6, for causing relative axial control movement of the valve with respect to the port means 14, there is provided a drive from the pump shaft for causing relative oscillatory movement between the valve 3 and the port means 14 about the axis of the control movement; the oscillatory movement may have a frequency of at least 150 cycles per minute and a small amplitude in the region of 10 degrees to 12 degrees; the port means may consist of a plurality of ports angularly spaced around a bore in which the valve works, the amplitude of the oscillatory movement being less than half the angle between any two adjacent ports. The front eccentric 25 of the pump is widened to accept the forked end of a lever 28 that is mounted at its lower end on a journal 29 which is pivoted in a bearing 30 on the pump casing, the bearing axis being coincident with the valve axis. A flexible shaft 32 attached to the valve 3 has a block 31 at its other end which is slidably received in a hole in the foot of lever 28 so that oscillatory rotational movement of the latter is imparted to the valve 3 to prevent sticking thereof. In a modification, the block 31 slides in the valve itself, the latter being perpendicular to the pump shaft, and the flexible shaft 32 is operated from an extension of the pump shaft by a cam and pin drive. Specification 470,069, [Group I], referred to.
Patent GB-300786-A (GB)
Title: Improvements in systems for selecting rays of different wave lengths from a source thereof
IPC: G01J3/06
Filed: 1927-11-10
Abstract: 300,786. M³ller, C. Nov. 10, 1927. Spectroscopes.-In systems for selecting ravs of different length from a source thereof, of the kind comprising a plurality of apparatus adapted to be successively traversed by the rays, one forming the spectrum and the other purifying selected rays of that spectrum, means are provided whereby the main parts of both apparatus are stationary and only a comparatively small element common to both is moved through a simple line for selecting the desired portion of the spectrum. The two apparatus of the system are disposed one beside the other and so that the foci in which rays of similar wave lengths coming from the first apparatus meet, coincide with the foci of the second apparatus from which the same rays are transmitted to the eyepiece of the second apparatus. A considerable number of examples of the construction and arrangement of such as apparatus is described in the Specification of which the following are typical. Two spectroscopes I, II, Figs. 1 and 2, are placed symmetrically one beside the other, the spectroscope I consisting of a diaphragm 1, a lens 2, a dispersing prism 3, a further lens 4 and a mirror 12 behind a slotted diaphragm 11 by which the selected portion of the spectrum is reflected through the second spectroscope II of similar construction. The selection is effected by moving the mirror 12 along the focal plane 8, 9 in which the spectrum lies. In Figs. 6 and 7 the reflector system comprises two prisms 48, 49 on opposite sides of the focal plane 50, adapted to move together across the focal plane whereby an appropriate selection is made and reflected to the diaphragm 44. The symmetrical arrangement shown in Fig. 12 is such that the spectrum is formed in the plane of symmetry, the blue end at the point b and the red end at the point r. A mirror moving along the line 81, 83 will reflect the appropriate portion of the spectrum through the lenses 78, 79 and the prism 80 to the diaphragm 77. Fig. 19 shows a form of the apparatus in which a mirror 85 and lenses 75, 79 are moved symmetrically with respect to the prisms 76, 80, to permit various parts of the spectrum to be examined through the lens 78. Another form which the apparatus may take is shown in Figs. 24 and 25 in which Young spectroscopes are used, the rays passing along one of the spectroscopes being reflected into the other by mirrors 209, 210.
Patent GB-1019629-A (GB)
Title: Improvements in or relating to sealing means
Inventor: PEARSON ROBIN
IPC: G21C13/028
Filed: 1962-08-07
Abstract: 1,019,629. Nuclear reactors. STRACHEN & HENSHAW Ltd. Aug. 19, 1963 [Aug. 7, 1962], No. 30227/62. Addition to 1,013,683. Heading G6C. Sealing means for the standpipe of a nuclear reactor comprising a piston sealed within a cylinder by two sealing rings, is characterized in that the sealing ring remote from the pressure is expanded mechanically to form a piston seal with the cylinder. In Fig. 2, the closure member 18 is sealed in the casing 2 by sealing rings 26 and 28a. A locking device comprises a cage ring 32 carrying hardened pins 34, and an extension 35 of the cage 32 is adapted to engage the sealing ring 28a, when under pressure, to expand it to form a piston seal.