baber/WOPTO huggingface dataset:
Patent CN-1116861-A (CN)
Inventor: SCHOLZ MATTHEW T
IPC: A61F13/04
Filed: 1994-01-19
Abstract: 本发明提供了一独特的针织结构。该结构在其底布织物中含有非玻璃纤维细旦纱。较好地，所述非玻璃纤维细旦纱(1)与一热收缩纱或一伸缩纱，或一用于控制刚性的非玻璃纤维纱，即，刚性控制纱(2)结合使用。更好地，该非玻璃纤维细旦纱与一伸长纱及一非玻璃纤维刚性控制纱结合使用。最好地，该非玻璃纤维细旦纱(1)与一热收缩纱、弹性伸长纱及一非玻璃纤维刚性控制纱(2)结合使用。
Patent CN-1163980-A (CN)
Title: 冲击式采煤机
Inventor: TIAN QUZHEN
IPC: E21C25/00
Filed: 1996-03-30
Abstract: 冲击式采煤机用于煤矿综采工作面的采煤作业。它由T形冲击刀架、刀齿、冲击传动箱、储能机构、装煤犁、摇臂、副摇臂、翻转换向机构、安全保护装置、润滑系统和机身等组成。摇臂是连接机身和冲击传动箱的构件，内设传动和储能等机构，冲击传动箱内设有冲击传动机构和冲击刀架，刀架前端安装有冲击刀齿，刀架往复冲击运动时达到采煤的目的。本发明与滚筒式采煤机相比，破煤机理完全不同，具有块煤率高，产尘量小，能耗低等优点。
Patent CN-1210913-A (CN)
Title: 碳纤维织物和用该织物的纤维强化塑料成品以及该成品的制造方法
Inventor: AKIRA NISHIMURA
IPC: D03D15/00
Filed: 1998-08-03
Abstract: 一种由多根碳纤维长丝排列形成的碳纤维织物,由约40,000至400,000根范围内的碳长丝构成,该长丝间有长丝交缠。前述碳纤维丝条的钩环值在约2—30cm的范围内,其纤度为可以在约25,000—350,000旦的范围内。前述碳纤维织物的膨松密度在0.65g/cm 3 以下,其碳纤维目付可以在约400—700g/m 2 的范围内。
Patent CN-1219766-A (CN)
Inventor: NIWA KOUICHIROU
IPC: H01L23/40
Filed: 1998-12-08
Abstract: 一种半导体器件包括带式载体、半导体芯片、金属散热器、支撑环、突起、凹槽和点焊部分。带式载体包括TAB带,半导体芯片安装于其上。金属散热器固定到与带式载体相对的芯片表面以散去所产生的热量。支撑环位于散热器和带式载体之间,并粘接到带式载体上,用于保证散热器和带式载体之间的预定间隙,防止带式载体弯曲。突起、凹槽和点焊部分通过使用机械啮合或熔焊将散热器和加固部件键合。本发明还公开了制造半导体器件的方法。
Patent CN-1257940-A (CN)
Title: 一种在高声速材料衬底上生长氮化铝压电薄膜的方法
Inventor: WANG LIANWEI
IPC: C23C16/34
Filed: 1999-12-24
Abstract: 本发明涉及一种在高声速材料(如金刚石、非晶金刚石薄膜、类金刚石薄膜)衬底上生长c－取向氮化铝(AlN)薄膜的方法。为了提高声表面波(SAW)器件的工作频率,一种有效的方法就是在高声速材料衬底上沉积压电薄膜。本发明通过引入氧化锌(ZnO)薄膜过渡层解决了在高声速材料(如金刚石、非晶金刚石和类金刚石薄膜)衬底上难以形成C－取向氮化铝(AlN)压电薄膜的难题。用本发明制备的氮化铝压电薄膜,制作声表面波(SAW)器件,其工作频率可达3千兆赫(GHz)以上。
Patent CN-1288049-A (CN)
Title: 无烟蜡烛
Inventor: TAIZO NODA
IPC: C11C5/00
Filed: 1999-12-30
Abstract: 本发明描述了一种无烟蜡烛,其除含有石蜡外,还含有虫蜡或中国蜡(白蜡),当蜡烛火焰闪动时,可以防止烟的产生。
Patent CR-20120035-A (CR)
Title: Terapia combinatoria de un anticuerpo anti-cd20 afucosilado con fludarabina y/o mitoxantrona
Inventor: DREYLING MARTIN
IPC: A61K31/137
Filed: 2012-01-19
Abstract: La presente invención está dirigida a la terapia combinatoria de un anticuerpo anti-CD20 afucosilado con fludarabina y/o mitoxantrona para el tratamiento del cáncer.
Patent CR-20180338-A (CR)
Inventor: ARMER DUSTIN P ;
IPC: A61F2/24
Filed: 2017-02-03
Abstract: Se describen estaciones de montaje expandibles para montar una válvula expandible que puede incluir un asiento de válvula, una o más porciones de selladura, y una o más porciones de retención. El asiento de válvula puede ser no expandible o sustancialmente no expandible más allá de un tamaño desplegado. Una o más porciones de selladura son conectadas al asiento de válvula y se extiende radialmente hacia afuera del asiento de válvula. Una o más porciones de selladura están construidas para expandirse hacia afuera del asiento de válvula y proporcionar un sello sobre un intervalo de tamaños. Una o más porciones de retención están conectadas a una o más porciones de selladura. Una o más porciones de retención están configuradas para retener la estación de montaje en una posición desplegada
Patent CR-20200649-A (CR)
Title: Tlr7 agonists
Inventor: WEBBER STEPHEN E
IPC: A61P35/00
Filed: 2019-05-24
Abstract: The present invention relates to TLR7 agonists according to Formula (I) and their use in the treatment of diseases such as cancer and infectious disease.
Patent CR-20210495-A (CR)
Title: Macrocyclic compounds as sting agonists
Inventor: PATIL PRADEEP RANGRAO
IPC: C07D498/22
Filed: 2020-03-21
Abstract: Disclosed are the macrocyclic compounds having the general Formula (I) and their tautomeric forms, stereoisomers, pharmaceutically acceptable salts, and their combination with suitable medicament, corresponding processes for the synthesis and pharmaceutical compositions and uses of compounds disclosed herein.
Patent CR-20210667-A (CR)
Title: Cacao cell suspension protocol
Inventor: SILVA LIDIANE DOS SANTOS
IPC: A61K45/06
Filed: 2020-06-05
Abstract: Provided herein are methods for establishing <em>Theobroma </em>cell suspension cultures using young leaves as a source of explants. Also provided are induction, proliferation, and suspension media used for producing <em>Theobroma </em>cell suspension cultures. These methods and media may be useful for producing secondary metabolites in <em>Theobroma</em>, as well as for isolating virus particles associated with <em>Theobroma</em> diseases.
Patent EC-SP920894-A (EC)
Title: Motor rotativo con camaras excentricas
Inventor: YURI MAURICIO CEVALLOS
IPC: F02B9/02
Filed: 1992-12-17
Abstract: El invento consiste en un motor rotativo con cámaras excéntricas, cuyo objetivo principal es que dicho motor por simple y práctico es mas eficiente, además de mantener un consumo menor de combustible y ser de fácil reparación. Las potenciales ventajas del motor rotativo respecto del motor de pistón.
Patent FI-20002398-A (FI)
Inventor: ISAKSSON DAN
IPC: H01H9/42
Filed: 2000-10-31
Abstract: The present invention relates to a switching device (14) which is arranged to switch a load (12) to a direct voltage circuit (13). The switching device (14) comprises a switching member (14a) consisting of at least three contacts (7,8,9), a control member (10) which controls the contacts (7,8,9) of the switching member (14a) and has the positions open Ä0Ü and closed Ä1Ü, and one or more spring members (16a, 16b) which are tensioned by the control member (10) and control the contacts. The switching device is characterized in that the switching member (14a) of the switching device (14) comprises a limiter arrangement which is arranged to limit closing of at least one contact (7) when the control member (10) is turned from the open Ä0Ü position into the closed Ä1Ü position, the limiter arrangement comprising a limiter (1) and a toggle joint (17) connected thereto and a solenoid (4) arranged in the toggle joint, the toggle joint (17) being arranged to be controlled by the solenoid (4), as a result of which the toggle joint (17) turns the limiter (1) so that it releases the contact (7) of the switching member (14a) whose closing has been prevented, allowing the contact to close. <IMAGE>
Patent FI-20115760-A (FI)
Inventor: KURT GUNES
IPC: H04W4/024
Filed: 2011-07-19
Abstract: The present invention relates to a location estimation and data transmission method wherein the location information of the points of interest (POI) is embedded as a watermark into an audio signal to be output from a speaker or similar audio source broadcasting at the point of interest (POI), and the subscriber stations (5) estimate the location of the points of interest (POI) by decoding the watermarks by means of the audio watermark decoders.
Patent GB-1002517-A (GB)
Abstract: 1,002,517. Solion integrators. GENERAL ELECTRIC CO. June 18, 1962 [June 28, 1961], No. 23438/62. Heading G4G. [Also in Division G1] A solion integrator comprises a housing containing electrodes in an electrolytic solution, at least one of the electrodes being of porous graphite sealed to the housing to define a pair of chambers containing the solution, the electrode being of a porosity such as to provide an electrolytic circuit therethrough. Such an integrator comprises anode 14 of either porous or non-porous graphite, a spacer 15 of glass or fused quartz, a porous graphite disc 16 which acts as the integrator cathode, a quartz spacer 17, a graphite separation cathode 18, a further spacer 19 and a further porous graphite disc 20 which is the separation anode. The assembly is contained in a heat resistant glass tube 13, and a chamber tube 26 or a rod 25 is adjusted to hold the assembled parts together. The graphite parts are sealed to the tube by heating the glass of the tube at the peripheries of the parts. Platinum leads to the graphite electrodes are brought out through the glass envelope to allow electrical connections to be made. In operation a negative voltage is applied to the electrodes 14, 16 and 18 and a positive voltage to the electrode 20, the cell containing a mixture of potassium iodide and iodine in solution. This initial voltage application separates iodide to the left of the electrode 18 and iodine and iodide to the right. Thereafter, the power source 32 is connected between the electrodes 14 (positive) and 20 (negative), as that iodide is oxidized to iodine at the anode 14 and iodine is reduced to iodide at the cathode 20, the change of iodine concentration at the input electrode being a function of the amount of current flowing, according to Faraday's Law. An integral of this current flow is obtained by connecting the battery 33 between the electrodes 14 and 16, in circuit with a meter 34 whose reading is proportional to the required integral. A modification (Fig. 3, not shown) is described, where a pair of hollow graphite cylinders are used to replace the electrodes 18 and 20.
Patent GB-1052432-A (GB)
IPC: H01H19/62
Abstract: 1,052,432. Controllers. RANSOMES SIMS & JEFFERIES Ltd. May 29. 1964 [April 3. 1963], No. 13200/63. Heading H2B. A cam-shaft controller for an electrically driven vehicle comprises a cam drum 23 operating in succession switches 37 in banks 38, 39 and 40 and having a rotary dashpot 20 mounted for rotation therewith to retard rotation of the cam drum 23 in the direction of increased speed of the vehicle. Switches 37 in the same bank are arranged in pairs (Fig. 3, not shown) for operation by cam steps 28 (Figs. 3, 4, not shown), on cam drum 23. An accelerator pedal is secured to one end of a Bowden cable 50 connected through a spring coupling 51 (Fig. 1, not shown), to the cam drum 23 and is movable against pedal return springs 57. From the spring coupling 51 an operating rod 64 is connected by a ball-andsocket joint to lug 29 (or lug 30) on cam drum 23. Switches 37 are micro-switches.
Patent GB-1052507-A (GB)
IPC: C07D307/68
Abstract: 1,052,507. Herbicidal compositions. SCHERING A. G. June 2, 1964 [June 26, 1963], No. 22843/64. Heading A5E. A herbicidal composition comprises a compound of the general formula:- in which R represents a phenyl radical optionally containing one or more substituents, namely halogen atoms, methyl, methoxy or ethoxy groups, the nitro group or the trifluoromethyl group, when more than one is present the substituents being the same or different, together with a solid, inert carrier substance. The composition may be in the form of a dusting agent, granulate or powder, of which the latter may be suspended in water, and may additionally contain a surfactant.
Patent GB-1053792-A (GB)
IPC: C07C205/12
Abstract: 1,053,792. 1,2,3,4 - Tetrachloro - 5,6 - dinitrobenzene and tetrachloro-o-phenylene diamine. FISONS PEST CONTROL Ltd. Oct. 23, 1963 [Nov. 10, 1962], No. 42553/62. Heading C2C. 1,2,3,4 - Tetrachloro - 5,6 - dinitrobenzene is made by di-nitrating 1,2,3,4-tetrachlorobenzene by treatment with a mixture of concentrated nitric acid and concentrated sulphuric acid at elevated temperature. The nitration is preferably effected at a temperature in the range 50-115‹ C. with 80-100% nitric acid and 90-100% sulphuric acid. The 1,2,3,4-tetrachlorobenzene is preferably made by chlorination of 1,2,3-trichlorobenzene in the presence of a nuclear chlorination catalyst, i.e. an active metal chloride, such as aluminium chloride, ferric chloride, tin chloride or antimony chloride, preferably at an elevated temperature between 50‹ and 100‹ C. Tetrachloro-o-phenylenediamine may be made by reducing the 1,2,3,4-tetrachloro - 5,6 - dinitrobenzene, preferably under acidic or neutral conditions, for example using stannous chloride and hydrochloric acid, stannous chloride and an alcohol such as ethyl alcohol or isopropyl alcohol, sodium hydrosulphite or zinc and an acid, such as acetic or hydrochloric acid.
Patent GB-1227101-A (GB)
IPC: E03D1/05
Filed: 1969-05-14
Abstract: 1,227,101. Flushing cisterns. F. H. MIDDLETON. 14 May, 1969 [24 June, 1968], No. 24484/69. Heading E1C. A siphon-discharge flushing cistern having a discharge pipe 44 leading to a lower tray 43, and a bell 55 or a U-bend 46 forming the air chamber for the siphon has an air hole e.g. 63 at the top of the chamber which is connected to an eductor system, providing positive air extraction from the chamber to initiate the flush. The eductor system includes a flushing fluid inlet valve 66 and a pipe 65 with a venturi 68, the pipe ending above Fig. 2, or below the normal fluid level. If the normal fluid level is above the U-bend (Fig. 1) the pipe must end below, or a check valve is necessary.
Patent GB-1230459-A (GB)
IPC: A61G7/005
Filed: 1968-06-15
Abstract: 1,230,459. Telescopic stays. J. NESBITEVANS CO. Ltd. 20 May, 1969 [15 June, 1968], No. 28621/68. Heading E2F. [Also in Division A4] A tiltable bed has a locking mechanism as in Specification 1,137,837 for the stack 15, 17 that sets the tilt of the bed, the mechanisms being modified. Two plates 32, 38 each have clearance hole 39 through which the member 17 of the stack passes. The plates bent under the influence of spring 25 and abut pivots so arranged with upward load and one with downward load, thus preventing movement in either direction. A lever 26 unlocks the mechanism.
Patent GB-1231071-A (GB)
IPC: G03B7/099
Filed: 1968-04-19
Abstract: 1,231,071. Exposure control. NIPPON KOGAKU K.K. April 19, 1968 [April 20, 1967(2)], No.18691/68. Heading G2A. In a single lens reflex camera having interchangeable objectives, the photo-cell of an exposure meter, which is positioned outside the light path through the objective, has in front of it a variable aperture diaphragm which is linked to the main objective diaphragm so that the two move together. As shown, the objective lens 1 has diaphragm blades 2 which are set to a predetermined value by manually adjusting a ring 4. The diaphragm remains open at full aperture until it is closed to the pre-set value, just before exposure, by rotation of a ring 3. Part of the light admitted by lens 1 is reflected from a semi-transparent mirror 7 to a focusing plate 8, and part passes through and is reflected by a concave mirror 11 to fall on the photo-sensitive element 12 of a light meter. In front of this is a diaphragm 13 which is linked to ring 4 by an interlocking ring 14. (Mirrors 7 and 11 can swing together out of the light path to the film 10.) It is thus not necessary to adjust the sensitivity of the photo-cell every time the lens is changed. The relationship between the movements is such that an alteration of ring 4 by one stop produces an alteration in diaphragm 13 of one stop. Figs. 4 and 6 (not shown) illustrate arrangements having different modifications of the light path to the photo-cell, which may additionally have a field stop and a lens.
Patent GB-1231439-A (GB)
IPC: F26B3/34
Filed: 1968-07-17
Abstract: 1,231,439. Coating. PPG INDUSTRIES Inc. 17 July, 1968 [20 July, 1967], No. 33933/68. Heading B2E. [Also in Divisions F4 and H5] Substrates are coated with a coating composition and the coating is fixed on the substrate by exposing to a field of high-frequency electrical energy produced between electrodes, a non-metallic barrier barrier which is pervious to high frequency electrical energy being disposed between the coated substrate and the electrodes and in spaced relationship to the substrate. The production of non-tacky elastomer coated glass fibre, strand, yarn, cord, cable or fabric for reinforcement of rubber is described using the method and apparatus disclosed in Specification 1,204,343 with the modification that a movable barrier 29 as shown in Fig. 2 of non-metallic material that is stretched over or extends across the electrodes 25 is employed. The barrier material may only contact electrodes of one polarity or it may be spaced from all of the electrodes. The barrier material is preferably glass cloth which has been coronized. Other materials mentioned are asbestos cloth, polyethylene terepthalate, polypropylene, polyethylene, polytetrafluoroethylene sheeting and wax paper.
Patent GB-1231793-A (GB)
IPC: G09B3/04
Filed: 1967-03-28
Abstract: 1,231,793. Teaching machines. J. L. CASTILLO. 26 June, 1968 [28 March, 1967], No. 14132/67. Heading G5G. A machine for presenting a student with a sequence of questions and answers and with means for screening each answer from the student until a written reply to the question is given by the student comprises a control knob 3 for advancing a question and answer sheet 2 so that a question becomes visible and a pin 6 engages in a hole in the sheet, a control knob 1 being provided to freely advance a student's reply sheet across a writing section of the machine independently of the question and answer sheet. A lever 16 is provided which is moved by a student to release the pin 6 from the sheet 2 to enable it to be wound on to show the answer. The pin 6 forms part of a lever 7 which is provided with a needle 20 which pierces the student's reply sheet, the lever 7 being held down by a magnet 17. The control knob 3 is connected to a wheel 21 which is connected by an elastic band 22 to a wheel 19 which acts on a tongue 18 of the lever 17. When the knob 3 is wound on to show the next question, the elastic band causes the lever 7 to be raised to bring the pin 6 into position to engage in a hole in the sheet 2.
Patent GB-1232912-A (GB)
IPC: H03F3/56
Filed: 1969-02-20
Abstract: 1,232,912. Valve amplifying circuits. ENGLISH ELECTRIC VALVE CO. Ltd. 15 Jan., 1970 [20 Feb., 1969], No. 9189/69. Heading H3W. In a U.H.F. klystron amplifier for simultaneously amplifying a plurality of U.H.F. carriers modulated with different signals a correcting circuit is provided having a non-linear operating gain/signal level characteristic so chosen in relation to the non-linear output/input characteristic of the klystron that the overall output/ input characteristic of the combination is substantially linear. Signals are fed to the input of klystron 3 via PIN diode attenuator 42, delay line 5 and directional coupler 2, the second output of which feeds diode rectifier 6. The output of diode rectifier 6, comprising the modulation envelope, is fed by way of video amplifier 7 to control the attenuation in attenuator 4, in such a way as to compensate for the non-linearity of the klystron characteristic (Fig. 1, not shown). The attenuator 4 comprises one or more PIN diodes 41 in a coaxial cable structure 42, the delay line 5 compensating for the delay over the path comprising diode 6 and amplifier 7.
Patent GB-1232956-A (GB)
IPC: D03D47/26
Filed: 1970-03-18
Abstract: 1,232,956. Travelling wave looms. RUTI MACHINERY WORKS Ltd. 18 March, 1970 [18 March, 1969], No. 13144/70. Heading DIE. The camshafts which operate the beat-up dents of a travelling wave loom each consist of a square shaft 40 on which are assembled identical cam sections 41, the end faces of which are oblique. The cam sections are made of polymethylene oxide to reduce friction and to ensure that the cam wears rather than the dents. The difference in expansion between the shaft and the cam sections due to temperature changes is taken up by a resilient washer 47.
Patent GB-1233197-A (GB)
IPC: F16J15/10
Filed: 1968-10-15
Abstract: 1,233,197. Joint-making paper. BRITISH MOTOR CORP. Ltd. 26 Aug., 1969 [15 Oct., 1968], No. 48701/68. Heading F2B. A joint gasket 1 of sheet material, e.g. paper or thin card, having holes 3, 3A for bolts or studs is formed with slots 4, 4A, 4B which extend between the zones of maximum clamping pressure adjacent successive bolts or studs and are filled with jointing compound applied either before or after locating the gasket in position on the joint.
Patent GB-1233592-A (GB)
IPC: F21V19/00
Filed: 1968-05-20
Abstract: 1,233,592. Electric incandescent lamps. SOC. ANON. POUR L'EQUIPEMENT ELECTRIQUE DES VEHICULES SEV-MARCHAL. 20 May, 1968 [19 May, 1967], No. 23901/68. Heading H1F. [Also in Division H2] An iodine lamp comprises a bulb 1 containing a filament 2, the ends of which extend into a flattened insulating base 3 where they are connected to plates 4, 5, which are themselves electrically connected to metallic ribs 6, 7 located in the median plane of the lamp. The rib 6 contains a circular hole 8 and the rib 7, in its outer edge has a semi-circular notch 9.
Patent GB-1233960-A (GB)
IPC: E04H4/00
Filed: 1968-10-18
Abstract: 1,233,960. Subaqueous structures. CLAIROL Inc. 18 Oct., 1968, No. 49670/68. Heading E1H. [Also in Division A4] An apparatus for creating waves, suitable for surfing, on the surface of a body of water comprises a pool A with a floor 10 sloping upwardly in the downstream direction, and at one end a beach 11, and at the other a resercoir B, the reservoir being separated from the pool area by a dividing wall 18. The wall 18 has an aperture below normal quiescent water level, the aperture being normally closed by a gate 23. Water is pumped into the reservoir so that a head of water is maintained, and then the gate 23 quickly opened for a short time. On meeting a deflector 20 the discharged water is directed forwardly and upwardly to create a wave. Conduits 33 channel water back into the reservoir via pump (37), Fig. 3 (not shown) and conduit 38 at a rate substantially equal to to the average rate at which it is expelled. The gate 23 may be raised rapidly by means of fluid cylinders 27 operated by a fluid compressor 28. In modifications, Figs. 6, 7 the deflector may form a lower part of the wall 18, below the aperture, so that again the discharged water is deflected upwardly. The gate may be of interlocking sections, each of which may be raised independantly. A gate which may be withdrawn laterally, and a sectioned gate, each section rotating about its vertical axis, to create an obliquely advancing wave are also discharged. Various methods of raising the gate are also disclosed including a hydraulic cylinder, an electromechanical plunger and a rack and pinion mechanism.
Patent GB-1238888-A (GB)
IPC: E06B3/28
Filed: 1968-11-23
Abstract: 1,238,888. Double glazing. BARNES WINDOWCRAFT Ltd. 24 Nov., 1969 [23 Nov., 1968, No. 55702/68. Heading E1R. A hinged frame B for converting an existing single glazed window A into a double glazed window comprises a hinge bracket b secured to the frame A on one side and on the opposite side a clip a the frame B being pivoted to the bracket b and on the opposite side having a catch member C pivoted on the frame B and having a lug c<SP>2</SP> adapted to engage with a projection on the clip a so as to lock the frame B to the frame A and compress therebetween a resilient seal strip b<SP>3</SP> carried on the frame B to form a seal.
Patent GB-1238993-A (GB)
IPC: H01J23/12
Filed: 1969-12-11
Abstract: 1,238,993. Travelling-wave tubes. SIEMENS A.G. 11 Dec., 1969 [12 Dec., 1968], No. 60448/69. Heading H1D. A travelling-wave tube is permanently fixed within its associated magnet system by positioning members which engage the tube laterally and which are fixed with respect to the magnet system by means of a solder or a hardenable synthetic resin. In one arrangement, Fig. 1 (not shown), spring-loaded pins carried by the magnet system bear laterally on the cylindrical metal envelope of the tube; when the position of the tube has been adjusted for optimum results, the casings of the pins are filled with solder or resin. The ends of the pins are rounded to permit longitudinal thermal expansion whilst preventing any radial movement. In another arrangement, Fig. 2, a clip 12 surrounds the end 10 of the tube and is provided with radial arms 13 which are a loose fit in locating members 21 attached to the magnet system 20; after correct positioning the spacing is filled with resin or solder to locate the tube radially, some longitudinal movement being permitted because of the length of the arms 13. Connector leads 15 are taken spirally to the neck of a cap 16 to prevent transfer of tensile forces to the tube, and after electrical adjustment the cap is rigidly secured to the magnet system. The other end of the tube is located in a collector cooling device as described in Specification 1,238,992.