baber/WOPTO huggingface dataset:
Patent CN-1736020-A (CN)
Inventor: MASAHIRO SUGIURA KENJI YASOHAR
IPC: H02P6/14
Filed: 2003-08-27
Abstract: 一种马达驱动设备包括：马达，具有三相驱动线圈；功率馈送器，用于对所述线圈进行供电；以及功率馈送控制器，用于控制功率馈送方法。在从马达停止状态开始、并且在以给定速度驱动马达时结束的第一馈送周期期间，该控制器通过导通或截止功率馈送器中的晶体管，而将在将电压施加到所述线圈的周期中的所述线圈的电位控制为电源电压电位或接地电位。在以高于给定速度的速度驱动马达的第二馈送周期期间，该控制器控制电位，使得通过截止晶体管而使所述线圈开路，或者电位变为电源电压电位。此结构允许所述马达驱动设备以较小的噪声、并具有较小的振动地驱动所述马达。
Patent CN-1031641-A (CN)
Title: 一种含有果肉的固体饮料的制备方法
Inventor: LINSHEN YE
IPC: A23L2/02
Filed: 1987-08-29
Abstract: 本发明提供一种含有果肉的固体饮料的制备方
法。用本法制成的固体饮料，经水冲制后，既保持单
一固体饮料的特色，又能使饮料中含有果肉，具有水
果罐头的效果。它是一种适用于工厂化生产的能够
小包出售的固体饮料制备方法。
Patent CN-1055014-A (CN)
Title: 低温光化学气相淀积二氧化硅、氮化硅薄膜技术
Inventor: JIANCHENG SUN
IPC: C23C16/40
Filed: 1990-03-17
Abstract: 本发明涉及一种光化学气相淀积(光CVD)技
术。 
     该技术采用紫外光汞敏化原理分解反应气体，在
低于200℃条件下，通过硅烷(SiH 4 )-笑气(N2O)及硅
烷(SiH4)-氨气(NH3)混合气体的光化学反应分别淀
积SiO2、SiN薄膜。与国外同类技术相比，具有薄膜
全面特性好，特别是薄膜介电强度高，应力小，腐蚀速
率低，淀积面积大，淀积均匀性好和光量子效率高等
优点。 
     用本发明在低温条件下淀积的SiO2、SiN介质
膜可对半导体器件进行表面钝化，介质隔离和扩散掩
蔽。
Patent CN-1080166-A (CN)
Inventor: YOUDE LIN
IPC: A61H3/04
Filed: 1992-06-19
Abstract: 本发明是在基本车架上安装摇杆-棘轮组合机
构。使人呈直立姿态，以滑移方式助行。对髋关节的
康复锻炼具有积极的应用价值。本装置结构简单，造
价低廉，行进平稳，且有转向、变速、变步距功能，操作
维修都非常方便。
Patent CN-1105709-A (CN)
Title: 稀土锌铜合金及其生产工艺
Inventor: YOUMING HE
IPC: C22C9/04
Filed: 1994-10-31
Abstract: 本发明公开了一种稀土锌铜合金，包括下列重量

组分：稀土金属0.010-0.1％，铜1.2-1.7％，杂质

＜0.3％，余量为锌。生产工艺包括制造锌铜二元合

金、稀土锌铜中间合金等步骤。本发明的产品晶粒明

显细化、强度高、塑性好，耐腐蚀性好。
Patent CN-1130512-A (CN)
Inventor: YIQING ZHANG
IPC: A61K33/30
Filed: 1995-03-03
Abstract: 本发明提供一种人工合成锌型矿泉粉，由其配比为氧化锌(ZnO)：柠檬酸(C 6 H 8 O 7 ·H 2 O)：碳酸氢钠(NaHCO 3 )＝(1～3)∶(4～6)：(0.5～1.5)。其制作工艺为取按成分配比的用量混合、研磨、搅拌均匀后置于干燥箱内，于60～80℃温度下干燥16～24小时，冷却到常温后，再研磨成粉末状后分装密封，贮存于阴凉干燥处。本品可用于沐浴、制作锌型矿泉饮料、含锌食品、锌型矿泉护肤美容系列产品。本发明的原料易得，生产工艺简单，使用效果好。
Patent CN-1146268-A (CN)
Title: 数据传输装置及其方法
Inventor: NOBORU OYA
IPC: H04N7/173
Filed: 1995-12-28
Abstract: 再排序装置1_1对以块为单位由多个块构成的时间序列数据的每一块的各段进行重新安排。选择装置2_1根据速度进行切换以对由再排序装置1再安排的多个时间序列数据S1_1至1_4进行选择，并连续地将所选择的时间序列数据的相应段传输到再排序装置3_1等，以作为流S2_1等。重复再排序装置3_1对包含在以块为单位的流S2_1中的段进行再排序，从而恢复其最初顺序，并将这一经过再安排的时间序列数据进行传输。
Patent CN-1156538-A (CN)
Inventor: HUI WENXUE
IPC: A01N57/10
Filed: 1996-11-15
Abstract: 30％甲拌磷粉粒剂，由30％甲拌磷、67％糠醛渣粉和3％碳黑混合配制成。该农药用于杀灭灰飞虱等小麦害虫，可减少小麦丛矮病70-80％，提高小麦产量。
Patent CN-1202864-A (CN)
Title: 具有多腔室的挤压型分配管
Inventor: USEN NORMAN
IPC: B65B3/16
Filed: 1996-10-30
Abstract: 本发明涉及一种具有多腔室的组件,其中材料一直被储存在至少两个独立的腔室中,直到启用所述腔室时为止。具体地说,本发明涉及一种采用了新型插入件(22)的分配管。可以低成本地将传统的分配管(10)分成独立的不同腔室(图4)。所形成的分配机构(图1)用于从同一管子中分配多于一种的材料,更具体地说,它同时且有效地共同分配预定比例的不相容材料。
Patent CN-1207835-A (CN)
Title: 在多个混频器中进行选择的方法和装置
Inventor: GAILUS PAUL H
IPC: H03B21/00
Filed: 1996-12-13
Abstract: 一种装置,包括一个电流生成器(101),具有一个输出端。多个混频器(103、105和107)可开关地耦合到该电流生成器输出端,从而在多个混频器的第一混频器(103)工作时提供第一平均功率输出值,而在多个混频器的第二混频器(105)工作时提供第二平均功率输出值。第一平均功率输出值不同于第二平均功率输出值。
Patent CN-1175570-A (CN)
Inventor: YU ZULONG
IPC: C07C67/31
Filed: 1997-09-29
Abstract: 本发明是一种乙醇酸甲酯的合成方法及催化剂,它是以甲酸甲酯和甲醛为原料,以硫酸金属羰基化合物为催化剂,在60～180℃下进行偶联反应1～12小时得到偶联反应液,然后加入甲醇于60～130℃下进行分解反应1～2小时,得到乙醇酸甲酯。本发明工艺条件温和,产品收率高。
Patent CN-1276079-A (CN)
Title: 流通管理系统
Inventor: MITSUO CHIHARA
IPC: G07F19/00
Filed: 1997-11-04
Abstract: 本发明的流通管理系统,利用由银行发行的、功能与一定金额的货币相同的流通媒体在与银行合作的商店里购买商品或享受服务,其核心构成部分是:银行的主计算机、组装在银行的现金自动存取机内的流通媒体发行装置、以及设置在各商店里的终端机。流通媒体发行装置和终端机由线路连接到主计算机上,当发行流通媒体时,流通媒体发行装置以储户的存款余额为最高限额,在申请金额的流通媒体上附加识别代码后予以发行。另一方面,主计算机从储户的帐户上扣除与已发行的流通媒体相对应的金额,同时存储已发行的流通媒体的识别代码。并且,在商店方面,把因提供商品或服务而从储户方面获得的流通媒体插入到终端机内,向银行的主计算机发送识别代码,由主计算机来确认流通媒体的真假。这时主计算机核对已发来的识别代码和发行时存储的识别代码,判断该流通媒体的真假,若是真的,则把该流通媒体的金额转入到商店的帐户上。
Patent CN-1238089-A (CN)
Inventor: CHRISTIE JOSEPH M
IPC: H04M3/42
Filed: 1997-11-10
Abstract: 本发明是一种提供基于电路的业务的汇接接续的汇接系统(300)。该汇接系统包含一个ATM交叉连接装置(370)、ATM交互工作多路复用器(360，364)和信令处理器(350)。多路复用器将汇接系统接收的业务转换至ATM，在此通过交叉连接装置选择路由，并在ATM交互工作多路复用器处转换回到基于电路的格式。信令处理器控制多路复用器使用的虚拟接续和输出基于电路的接续。
Patent CR-20110514-A (CR)
Title: Caja con paredes laterales plegables y mecanismos de cierre con protección de sobrecarga
Inventor: ORGELDINGER WOLFGANG
IPC: B65D6/16
Filed: 2011-10-03
Abstract: Una caja plegable comprende un fondo y dos paredes exteriores laterales longitudinales (6a, 6b) y laterales transversales (4a, 4b) donde cada una yace opuesta en pares y plegable con respecto al fondo (2). Cada una de las paredes exteriores laterales longitudinales (6a, 6b) comprende una protuberancia (22) por lo menos en un extremo lateral transversal que se extiende en la dirección de las paredes exteriores laterales transversales (4a, 4b) en el estado desplegado, lo cual limita la capacidad de plegado de las paredes exteriores laterales transversales (4a, 4b) hacia afuera.
Patent CR-20190175-A (CR)
Inventor: DIXON TYLER
IPC: C12M3/00
Filed: 2017-09-08
Abstract: La invención se refiere a sistemas y métodos para la producción y uso efectivos de microorganismos y/o el caldo de fermentación en el que se producen. Ventajosamente, el sistema es rentable, escalable, rápido, versátil, eficaz y útil para reducir la resistencia a los compuestos químicos y residuos que preocupan a los consumidoresThe invention relates to systems and methods for effective production and use of microorganisms and/or the fermentation broth in which they are produced. Advantageously, the system is cost-effective, scalable, quick, versatile, efficacious, and helpful in reducing resistance to chemical compounds and residue that concerns consumers.
Patent CR-20200393-A (CR)
Title: Picolinamides as fungicides
Inventor: MEYER KEVIN G
IPC: C07D213/81
Filed: 2019-03-08
Abstract: <p>This disclosure relates to picolinamides of Formula (I) and their use as fungicides.</p>
Patent CR-20220631-A (CR)
Title: Cyclobutyl dihydroquinoline sulfonamide compounds
Inventor: MILGRAM BENJAMIN C
IPC: C07D413/12
Filed: 2021-06-10
Abstract: The present invention provides a cyclobutyl dihydroquinoline sulfonamide compound of Formula (I), an enantiomer, diastereoisomer, atropisomer thereof, a mixture thereof, or a pharmaceutically acceptable salt thereof, that inhibits voltage-gated sodium channels, in particular Nav1.7. The compounds are useful for the treatment of diseases associated with the activity of sodium channels such as pain disorders, cough, and itch. Also provided are pharmaceutical compositions containing the compounds of the present invention. Also further provided is an atropi-selective preparation of said compounds of Formula (I), and intermediate thereof.
Patent CR-20230055-A (CR)
Title: Apparatus for vapourising a liquid for supply to an environment
Inventor: TAYLOR SARAH
IPC: A61L2/20
Filed: 2021-06-29
Abstract: The invention is a vapourising device (10) for vapourising a volatile liquid for supply to an environment. The device has a housing 100 having an inlet (109) for receiving inlet air which is warmed by inlet heater (111) before being supplied to cartridge assembly (200). Cartridge assembly (200) has a reservoir (204) for containing the liquid to be vapourised and at least one wick (206), one end of which is located in the reservoir to receive and transport the liquid to the other, exposed end of the wick where the liquid evaporates and mixes with the supplied stream of heated inlet air. The wick may be heated by a wick heater (211). The device also includes an outlet duct section (217) between the wick (206) and the outlet (221) which is conical in shape and is configured to accelerate the flow of the mixture of inlet air and vapourised liquid away from the wick towards the outlet (221). The invention provides increased control of the vapourisation process and helps to reduce condensation of the volatile liquid back onto the apparatus or onto surrounding surfaces.
Patent CR-20230310-A (CR)
Title: Prmt5 inhibitors
Inventor: BOURBEAU MATTHEW PAUL
IPC: A61K31/4353
Filed: 2021-12-15
Abstract: Described herein are novel PRMT5 inhibitors of Formula I and pharmaceutically acceptable salts thereof, as well the pharmaceutical compositions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity and may have use in treating proliferative, metabolic and blood disorders. Compounds of Formula I have the following structure:
Patent EC-SP003356-A (EC)
Title: Epotilonas c-21 modificadas
Inventor: KIM SOONG-HOON
IPC: A61K9/08
Filed: 2000-02-22
Abstract: La invención se refiere a epotilonas en las cuales el substituyente tiazol se ha modificado, con métodos para su preparación y con agentes funguicidas o terapéuticos que contienen estas epotilonas.
Patent EC-SP961793-A (EC)
Title: Formulaciones orales de ibuprofen s (+)-
Inventor: HUMBER LESLIE GEORGE
IPC: A61K31/40
Filed: 1996-06-12
Abstract: Esta invención se refiere a formulaciones nuevas de ibuprofeno. Más especificamente, esta invención se refiere a las formulaciones orales sólidas organol, ópticamente aceptables de ibuprofeno S(+)-. A los fines de esta descripción, los compuestos, materiales, y formulaciones organol, opticamente aceptables son aquellos que pueden ponerse en contacto con los receptores del gusto de la boca de la persona que los recibe y que son generalmente aceptables para los sentidos de dicha persona, especialmente el sentido del gusto. Más especificamente, las formulaciones organol, ópticamente aceptables de esta invención son las formulaciones orales sólidas en las que el componente ibuprofeno S(+)- no tiene el sabor amargo desagradable en las que el componente ibuprofeno S(+) no tiene el sabor amargo desagradable normalmante asociado con una mezcla racimica del ibuprofeno.
Patent FR-1603510-A (FR)
Title: Anions and cations rapidly determined using reagent papers
IPC: G01N31/22
Filed: 1968-10-31
Granted: 1971-05-03
Abstract: The reactive papers are prepared by the application of several spots, consisting of a reagent of known concentration and a coloured indicator to the paper. The paper, pref. Wattmann chromatographic grade, is then dried and pref. stored in the dark. The estimation is carried out by adding a standard volume of the soln. to be determined to each of the spots. The ionic concentration is then between that of the lowest concentration at which the indicator colour persists and the concentration above. Estimations are more rapid than standard methods. Examples are given for the estimation of sulphate, chloride, ferrous ion and phosphate.
Patent FR-1604097-A (FR)
Title: Dryer control system - for moving webs, esp paper
IPC: D21G9/00
Filed: 1968-12-31
Granted: 1971-07-05
Abstract: Control system, esp. for regulation of dryness of, e.g., paper or cardboard webs, by controlling steam flow to drying rolls, has a probe to measure dryness of web and producing a signal corresponding to the deviation from the set point. The signal is fed to a controller, which is adjusted for a given set point and provides an output signal for controlling a regulator in the steam line.
Patent GB-1009080-A (GB)
Abstract: 1,009,080. Soldering. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 4, 1964 [July 30, 1963], No. 31028/64. Heading B3R. [Also in Division H1] In manufacturing a network of interconnected electrical components the leads of the components are inserted into apertures in a holder comprising at least two plates which are slidable relative to one another and each of which has apertures arranged in a pattern corresponding to the position of the leads in the finished network, one plate is then shifted relative to the other so as to clamp together the leads in each pair of coinciding apertures and the free ends of the leads are soldered, the plates then being restored to their initial positions and the network removed. Electrical components 7, e.g. resistors, capacitors, transistors &c., have leads 6 which are inserted in the circular or square apertures 5 in three plates 2, 3, 4, the central plate 3 is moved relative to the outer plates to clamp the leads and the free ends of the leads are simultaneously dipsoldered. The central plate 3 is returned to its initial position and the network removed. The network may be embedded in polystyrene.
Patent GB-1021685-A (GB)
IPC: C21C7/10
Abstract: 1,021,685. Casting machines. BIRMING- HAM SMALL ARMS CO. Ltd. March 17, 1964 [March 20, 1963], No. 10965/63. Heading B3F. A melting and casting apparatus comprises a crucible connected to a mould, both mounted for tilting or rotation in a melting chamber located between oppositely disposed mould charging and discharging chambers, a consumable electrode of the metal to be melted being disposed coaxially with the crucible for movement within an electrode chamber extending from the melting chamber in a direction normal to the charging and discharging chambers, and feed mechanism for advancing the electrode into the crucible to thereby initiate an arc between the tip of the electrode and the skull in the crucible. The consumable electrode 8 is melted in the crucible 12 and the melt thereafter heated by an arc between it and the tungsten carbide electrode connection 9. The moulds 13 are fed to, and discharged from the melting and casting chamber 3 through vacuum chambers 4, 5, and clamped to the crucible by means 28, 29. In a modification, Fig. 6 (not shown), the mould is rotated at centrifuging speed through a clutch 35 which is disengaged to allow the crucible and mould to be tilted for pouring.
Patent GB-1047358-A (GB)
IPC: F16K17/04
Abstract: 1,047,358. Valves. H. & H. BISHOP Ltd. Sept. 9, 1965 [Sept. 17, 1964], No. 37950/64. Heading F2V. In a valve, such as a fluid - pressure relief valve, a resilient closure member 15 is housed in a recess 16 in a hard bobbin 17 to co-operate with a hard seat 8 surrounding the highpressure port, a hard ball 11 being supported by an abutment 10, 13 within the port to prevent extrusion of the closure member 15. The bobbin has flats on its outer cylindrical surface to reduce frictional resistance and permit escape of fluid while a vent hole 29 and a plate 30 are provided behind the closure member. The outside of the seat may be bevelled and the valve member be so shaped as to form a frusto-conical annular passage when the valve is open or the vent in the bobbin may be in the form of intersecting bores one of which is partly closed by a peg to prevent extrusion of the closure member 15. To alter the blow-off pressure a cover 20 may be screw adjusted. The valve may be manually actuated.
Patent GB-1050834-A (GB)
IPC: A61G13/00
Abstract: 1,050,834. Surgical bedsteads. CHAS. F. THACKRAY Ltd. Oct. 23, 1964 [Oct. 29, 1963], No. 42595/63. Heading A4H. [Also in Division H5] A hospital trolley includes a rigid horizontal frame 1 on legs 2, 3 provided with wheels 4, a two-part table top 6, 7 supported on the frame 1 of which a part 6 can be moved in a horizontal plane and a part 7 into a lower plane for the part 6 to be slid over it, Fig. 4 (not shown). Pivoted links and levers 17, 19 are provided for lowering and raising the part 7. The part 6 includes an insert of material through which X-ray photographs may be taken. An X-ray cassette receiving carriage 11 is mounted on rails 10. Leg supports 24 Fig 2 (not shown) are mounted on brackets 25 and are adjustable in height and angularity. The part 6 may be mounted on rollers 8 and have an adjustable head rest 12. Detachable side frame members may be fitted into sockets 29 to prevent a patient falling from the trolley. A detachable douching funnel 30 may be fitted.
Patent GB-1054600-A (GB)
IPC: D03D43/00
Abstract: 1,054,600. Drop boxes. RUTI MACHINERY WORKS Ltd. Oct. 5, 1965 [Oct. 6, 1964], No. 42299/65. Heading DIE. The compartment division plates 19-21 of a drop box are bolted to shuttle guides 17 at the entry end and, at the other end, have slots 26 which embrace a pillar 14 which has slots into which the ends 25 of the slots 26 fit, so that the division plates are loosely held.
Patent GB-1227835-A (GB)
IPC: H01H36/00
Filed: 1968-11-04
Abstract: 1,227,835. Magnetic switches. S. G. BROWN Ltd., and T. D. IBBOTSON. 16 Sept., 1969 [4 Nov., 1968], No. 52144/68. Heading H1N. [Also in Divisions H3-H5] Specification describes a portable two-way speech communication apparatus, comprising a head-set 10, 11, Fig. 1, a transmitter-receiver assembly 14 and a talk-listen switch 13, the switch 13, having means 25, Fig. 2, for its attachment to the user's clothing, and comprising, within a waterproof casing 15, 16, at least one set of magnetically operated switch contacts 20, 21, Fig. 4, and, external of the casing, a movable operating member 30 containing a permanent magnet 31, Fig. 5, and movable netween one or other of two positions such that the switch contacts are operated by the movement of the magnet. The plastics, waterproof casing comprises a top and sides portion 15 and a bottom portion 16 joined by waterproof gasket 18 and both portions having end apertures through which pass flexible waterproof sleeves for the head-set and transmitterreceiver apparatus wires. In the casing are two magnetic reed switches 20, 21 and a terminal block 22. The front of casing portion 15 is formed with a cylindrical protuberance 32 on which the operating member rotates between an OFF position in which the magnet 31 operates the switches 20, 21 such that the apparatus is in a receiving mode and an ON position in which the magnet 31 operates the switches such that the apparatus is in a transmitting mode. A spring coiled around protuberance 32 biases the member to the OFF position whereby the user is normally open to reception of information and has to overcome the bias to speak. The attachment means may comprise a crocodile clip 25.
Patent GB-1229013-A (GB)
IPC: G03B17/52
Filed: 1968-07-15
Abstract: 1,229,013. Motor driving arrangements. INTERNATIONAL POLAROID CORP. 15 July, 1968 [19 July, 1967], No. 33668/68. Heading H2A. [Also in Divisions G2-G3] A motor has a stator 40, a rotor 48, and, lying in the air gap between the stator and rotor, a roller 24, the rotor and roller being interconnected through a flexible coupling 56 and reduction gearing 58. The rotor rotates at 16,000 r.p.m. and the reduction gearing is 40 to 1, planetary gearing or 'wobble' gearing being suitable. The motor shaft 42 is mounted for rotation in bushings 44 and has a commutator 50 and brushes 52. The roller 24 is of stainless steel, one end rotating on bronze bushings 46, the other end being fixed to the speed reduction gearing at 57. The roller and motor assembly is mounted within a camera (see Divisions G2-G3) and is used to process film packs of the type containing a pad of processing liquid.
Patent GB-1229855-A (GB)
IPC: D06B11/00
Filed: 1968-06-25
Abstract: 1,229,855. Printing apparatus. ADVANCE FINISHING Inc. 25 June, 1968 [26 June, 1967], No. 16497/70. Divided out of 1,229,854. Heading B6C. A web 18, Fig. 1, of yarns taken from a roll 19 is printed when passed between rollers 40, between which is a reservoir of marking matter 42, and over a series of printing bars 96, 98 and 100 which are mounted on respective shafts 70, 72 and 74, Fig. 2, and dip into associated ink baths 58, 60, 62 during each revolution. The printed yarns are fixed at 24, shuffled at 26, washed at 28, dried at 30 and made into carpets at 32. Each printing bar is carried between two discs mounted on the associated shaft, the distance of any one bar from its shaft differing from that of the other bars and the drive to the shafts being so arranged as to equal the linear speed of each bar to its neighbours and the moving yarns.
Patent GB-1230683-A (GB)
IPC: A01D59/04
Filed: 1969-06-18
Abstract: 1,230,683. Baling machines. INTERNATIONAL HARVESTER CO. 18 June, 1969 [1 July, 1968], No. 30764/69. Heading B5F. A twine holding and cutting assembly arranged to be mounted on a frame 19 of a baler knotter and to co-operate with a pair of axially spaced notched discs 27, 28 rotatably mounted on the frame, comprises a keeper blade 23 pivotally mounted at 36 so that a portion thereof is interposed between the discs, and a knife holder 44 pivotally mounted at 46 for a forward cutting stroke of a blade 48 and a return stroke under the bias of a spring 52. When the discs 27, 28 are rotated from a twinereceiving to a twine-holding position the twine extending between them will engage a hump 38 on the keeper blade 23 and pull the blade 23 into holding relation with the discs 27, 28. This movement of the blade 23 causes a cutting stroke of the knife holder 44 by the action of a lug 43 carried by the keeper blade 23 on a surface 51 of the knife holder 44. The lug 43 is adjustable in position to advance or retard the movement of the blade 48 in relation to the movement of the keeper blade 23. A guide 53 receives a portion of the knife holder 44 to resist forces imparted by the twine to the blade 48.
Patent GB-1234315-A (GB)
IPC: B65G43/02
Filed: 1969-09-23
Abstract: 1,234,315. Indicating damage to conveyer belts. BERGWERKSVERBAND G.m.b.H. 23 Sept., 1969 [22 Nov., 1968], No. 46896/69. Heading B8A. [Also in Division H4] In a system for giving warning of damage to a conveyer belt, the belt 1 is provided with tuned circuits 2, 3, short-circuited by loops 4 extending across the width of the belt, which are equally spaced along the belt. A tuned circuit 19 is fixed externally of the belt and forms the frequency-determining element of an oscillator 7. If a loop 4 is broken, when the corresponding circuit 2, 3, passes the circuit 19, the circuit 19 is damped and the resulting fall in voltage is detected by a diode 17 and fed to a switching amplifier 8 operating a relay 9 having contacts 10 in the circuit of the conveyer drive motor and/or a warning device. To compensate for changes in the tuning of the circuits 2, 3, or 19 the resonant frequency of the circuit 19 is varied cyclically by a voltage-sensitive diode 16 coupled to a sawtooth oscillator 13.
Patent GB-1239053-A (GB)
IPC: C22B19/04
Filed: 1968-07-22
Abstract: 1,239,053. Distilling metals. GRILLOWERKE A.G. July 22, 1968 [July 20, 1967], No.34762/68. Heading C7D. A metal is purified from one or more less volatile metals in a distillation process in which fused crude metal is fed from above to a packed fractionation column so that the metal flows as a coherent stream down at least part of the length of the column, the outer region of the column being heated to a temperature greater than that of the coherent stream to set up a temperature gradient across the column from the stream to the outer region. Vapour of the metal passes upwardly in countercurrent to the stream and purified metal is drawn off as vapour at the head of the column. In the drawing a retort 7 is filled with packing'17 such as small pieces of coke which is fed to the retort through a hopper 5 and can be removed at the lower end through outlet 10 for cleaning and reintroduction. A feed pipe 2, preferably centrally placed, for crude metal dips into the packed section for a distance which may be varied up to two thirds of the length of the column. The column is heated externally by burners 11, 12, 13 to provide a lower evaporation zone, an intermediate rectification zone and, corresponding to the length of the feed pipe, a purification zone primarily for filtering of impurity-containing liquid droplets from the metal vapour. The temperature of the packing layer in the purification zone may be the same as that of the vapour leaving the rectification zone, or it may be above or below that of the vapour. A horizontal temperature gradient in the purification zone is ensured by the external heating and by the relatively cold liquid flowing through the feed pipe 2. To avoid vapourisation of metal in the feed pipe, this may be provided with an insulating layer 4. Vapour is condensed in condenser 16 and the sump product containing the less volatile impurities is removed, continuously or batchwise via 8, 9. Reference is made to the production of pure zinc from its alloys with lead, iron, aluminium and/or copper.