baber/WOPTO huggingface dataset:
Patent TW-202310348-A (TW)
Inventor: HARADA NOZOMU
IPC: H01L29/786
Filed: 2022-05-10
Abstract: 在基板1上，具有與源極線SL相連的N + 層3a及朝垂直方向豎立的第一Si柱2a，在第一Si柱2a上具有第二Si柱2b。在第一Si柱2a的中央部具有P + 層7aa，並有P層7ab圍繞P + 層7aa。在第二Si柱2b的中央部具有P + 層7ba，並有P層7bb圍繞P + 層7ba。在第二Si柱上具有與位元線BL相連的N + 層3b。此外，具有圍繞第一Si柱2a之第一閘極絕緣層4a及圍繞第二Si柱2b之第二閘極絕緣層4b。並且具有圍繞第一絕緣層4a且與板線PL相連的第一閘極導體層5a，及圍繞第二絕緣層4b且與字元線WL相連的第二閘極導體層5b。控制施加於源極線SL、板線PL、字元線WL及位元線BL的電壓，而進行在通道區域7的內部將藉由撞擊游離化現象或閘極引發汲極漏電流而產生的電洞群保持之資料保持動作，以及將該電洞群從通道區域7內去除掉之資料抹除動作。
Patent TW-202247961-A (TW)
Title: Robot simulation device
Inventor: YONEYAMA HIROYUKI
IPC: B25J9/22
Filed: 2022-05-12
Abstract: The present invention easily compares, during or after execution of a simulation, a change in robot operation and cycle time before and after revision of a robot program, or a difference in the robot operation and cycle time between multiple robot programs, the contents of which are partially different. This robot simulation device is provided with: a three-dimensional model arrangement unit that arranges in a virtual space a robot model representing a robot in a three-dimensional manner; a simulation execution unit that executes a simulation with a robot program and operates a robot model; an operation log storage unit that during the simulation of the robot program, stores the position/orientation of the robot model at each time point as an operation log; and an operation log reproduction unit that selects one or more operation logs from among multiple operation logs, then arranges in the virtual space an operation log reproduction robot model representing the robot in a three-dimensional manner, and operates the operation log reproduction robot model on the basis of time points stored in the selected operation log(s).
Patent TW-202303024-A (TW)
Inventor: SCHALTEGGER LUKAS
IPC: F16K3/02
Filed: 2022-05-12
Abstract: 在用於密封真空閥的閥開口（31、32）的至少基本上為矩形的閥板的正面上安置了由彈性體材料製成的密封圈（3）。該閥板在背面（4）具有至少一個凹部（7），該凹部帶有底切地構造的邊界壁，該邊界壁形成傾斜面（8），該傾斜面可與該承載體（20）的傾斜面（27）夾緊，以將該閥板固定在承載體（20）上。在該閥板上安置至少一個突出於該閥板的背面（4）的接片（14），該接片具有用於穿過夾緊螺釘（16）的通孔（15），該夾緊螺釘可擰入到該承載體（20）的螺紋孔（28）中，用於將該閥板的至少一個傾斜面（8）與該承載體（20）的至少一個傾斜面（27）夾緊。在該閥板的側視圖中，沿平行於該閥板的縱向邊（5）的觀察方向觀察，貫穿該接片（14）的該通孔（15）的縱向中心軸線（17）的直線延伸部分相距該閥板的背面（4）隔有距離（a）地經過該傾斜面（8）。
Patent TW-202303172-A (TW)
Title: Intermediary apparatus for handler of electronic component
Inventor: CHO YOUNG-HWAN
IPC: H01L21/677
Filed: 2022-05-18
Abstract: The invention relates to an intermediary apparatus for handler of electronic component. The intermediary apparatus for handler of electronic component according to the present invention can selectively mount different types of adapters to a mounter, and thus has the advantage of being able to process electronic components of more specifications.
Patent TW-202308674-A (TW)
Title: Orally ingested IL-1[beta] blood level increase inhibitor, orally ingested amyloid-[beta] intracerebral level increase inhibitor, orally ingested hair improving agent, and orally ingested anti-aging agent containing an ethanol extract of Rhinacanthus nasutus as an active ingredient
Inventor: TAKAHASHI TOMOYA
IPC: A23L33/105
Filed: 2022-06-27
Abstract: An object of the present invention is to develop novel properties possessed by ethanol extracts of Rhinacanthus nasutus and provide new uses according to the novel properties. The solution of this invention is that an orally ingested IL-1[beta] blood level increase inhibitor, an orally ingested amyloid-[beta] intracerebral level increase inhibitor, an orally ingested hair improving agent, and an orally ingested anti-aging agent contain an ethanol extract of Rhinacanthus nasutus as an active ingredient.
Patent TW-202306976-A (TW)
Title: Closed-system and method for autologous and allogeneic cell therapy manufacturing
Inventor: FREUND NATHANIEL W
IPC: C12N15/861
Filed: 2022-06-30
Abstract: A system and method for manufacturing engineered human lymphocytes for cell therapies, including isolating targeted cells of interest from apheresis starting material using an acoustic separation device and activating the targeted cells of interest in situ with, in certain aspects, antibody-coated surface in an enclosed vessel. Also, the method includes transfecting the targeted cells of interest with construct-encoded lentiviral vectors, retroviral vectors, adeno-associated vectors or non-viral vectors in the enclosed vessel. The cells of interest may then be transfected with viral or non-viral genetic material using an electroporation device. Transfected cells may then be expanded to a desired dose using an expansion feeding method. Also, the method may include combining the targeted cells of interest with cryoprotectant reagents and buffers to create a final formulation.
Patent TW-202317250-A (TW)
Title: Cleaning basket
Inventor: ICHITSUBO KOKI
IPC: B01D47/06
Filed: 2022-07-29
Abstract: The present invention prevents contamination of polycrystalline silicon at a cleaning step. A cleaning basket is used in the cleaning of polycrystalline silicon with the polycrystalline silicon accommodated therein. The cleaning basket comprises a plurality of structural components formed from resin, and the plurality of structural components are joined to one another by threaded engagement of screws formed from resin.
Patent TW-202315554-A (TW)
Inventor: ZHENG LEI-LEI
IPC: A47D13/04
Filed: 2022-08-01
Abstract: 一種車架收合固定裝置及兒童車，其中的車架收合固定裝置包括：第一鎖定裝置，位於車架的前腳上；第二鎖定裝置，位於車架的車手上，在車架的前腳相對於車架的車手收合時，第一鎖定裝置與第二鎖定裝置相對彼此旋轉並鎖定；在車架的前腳相對於車架的車手展開時，第一鎖定裝置與第二鎖定裝置相對彼此反向旋轉並解鎖。
Patent TW-202328855-A (TW)
Inventor: GUPTA SHASHANK
IPC: G06E3/00
Filed: 2022-08-31
Abstract: Described herein are photonic sources and related system architectures that can satisfy the optical power requirements of large photonic accelerators. Some embodiments relate to a computer comprising a photonic accelerator configured to perform matrix multiplication; a fiber array optically coupled to the photonic accelerator; and a photonic source optically coupled to the fiber array. The photonic source comprising a laser array comprising a plurality of monolithically co-integrated lasers, and a coupling lens array comprising a plurality of monolithically co-integrated lenses, the coupling lens array optically coupling the laser array to the fiber array. The laser array is configured to output between 0.1 W and 10 W of optical power.
Patent TW-202328463-A (TW)
Title: Production method for fine metal particles
Inventor: KIYOSAWA MASASHI
IPC: C22C1/04
Filed: 2022-09-19
Abstract: A production method for fine metal particles, including a step for preparing metal particles, and a step for supplying the metal particles with a feed gas including a hydrocarbon, wherein the contacting of the feed gas and the metal particles is carried out at a temperature of 600-900 DEG C.
Patent TW-202336136-A (TW)
Inventor: MARTIN ARTHUR W
IPC: C08L27/14
Filed: 2022-12-14
Abstract: Compatibilizers are disclosed that enable the formation of stable alloys of fluoropolymers with cyclic olefin copolymers (COC). The alloys are useful for many purposes, such as high frequency electronics. Methods of making the compatibilizer and the alloy are further provided.
Patent UA-44039-A (UA)
Title: Lasals vessel
Filed: 2001-02-28
Abstract: The vessel comprising a body of the vessel, a rack and a support. The body of the vessel is designed as a hollow reservoir consisting of the lateral wall and the base. The vessel is additionally equipped with at least one holder, the rack, the holder and the support being designed as a whole assembly. Such an assembly having at least one connection area with the body of the vessel by means of at least one element of the assembly.
Patent UA-59508-A (UA)
Title: Device of a sealing gate for cylindrical tanks with pontoons
Filed: 2002-02-08
Abstract: A device of sealing gate for cylindrical tanks with pontoons consists of a seal and unit of its fastening to the carpet of the pontoon. The sealing device is executed as series elastic blocks connected between them. The unit of fastening of the sealing device to the carpet of the pontoon is formed by plates of trapezoid form placed on perimeter of the carpet, said plates are turned by smaller basis toward the center of the carpet and are connected with the carpet and elastic blocks of the sealing device.
Patent DO-P2007000026-A (DO)
Title: Implante polimerico y un proceso para obtener un implante polimerico.
Inventor: FERNANDEZ NASCIMIENTO JEFTER
IPC: A61K9/20
Filed: 2007-02-06
Abstract: "JMIMPLANTE POLIMERICO Y UN PROCESO PARA OBTENER UN IMPLANTE POLIMERICO". EL IMPLANTE POLIMERICO SE OBTIENE DE UNA FUENTE REANUDABLE, ABARCANDO UN CUERPO (10) FORMADOS POR LO MENOS POR UN POLIMERO BIODEGRADABLE SELECCIONADO DEL GRUPO DE POLIHIDROXIALCANATOS (PHAS) Y COPOLIMEROS, DE DICHO IMPLANTE (10), INCORPORANDO EN SU MICROESTRUCTURA, UN INGREDIENTE ACTIVO EN SUFICIENTE CANTIDAD PARA CONTROLAR AL MENOS UN CICLO DEL ESTRO DE LOS MAMIFEROS. LA INVENCION ABARCA UN PROCESO PARA OBTENER UN IMPLANTE POLIMERICO: MEZCLAR PROGESTERONA O PROGESTOGENO, POR LO MENOS UN POLIMERO DEL GRUPO DE PHAS, UN ADITIVO POLIMERICO DEFINIDO POR POLI (? -CAPROLACTONEA) , Y POR LO MENOS UN ADITIVO DISPERSOR Y/O SOLVENTE, PARA OBTENER UNA SOLUCION COLOIDAL; EVAPORANDO EL SOLVENTE DE LA SOLUCION COLOIDAL, Y FORMANDO UNA GOMA CON LOS COMPONENTES ALLI DISPERSOS, SECANDO LA GOMA PARA REMOVER LOS SOLVENTES RESIDUALES Y CONTROLAR LA GRANULOMETRIA DEL COMPUESTO POLIMERICO; EXTRAYENDO EL COMPUESTO CONVIRTIENDO ESTE ULTIMO EN UN IMPLANTE (10).
Patent DO-P2013000059-A (DO)
Title: Derivados de benzomidazoles como inhibidores de quinasa pi3
Inventor: QU JUNYA
IPC: A01N43/52
Filed: 2013-03-15
Abstract: Esta invención se refiere al uso de derivados de bencimidazol para la modulación, notoriamente la inhibición, de la actividad o de la función de la familia de cinasa de fosfoinositida 3' OH (posteriormente en la presente las cinasas PI3), adecuadamente, PI3Ka, PI3Ko, PI3Kb, y/o PI3K¿. Adecuadamente, la presente invención se refiere al uso de bencimidazoles en el tratamiento de uno o más estados de enfermedad seleccionados de entre: trastornos autoinmunológicos, enfermedades inflamatorias, enfermedades cardiovasculares, enfermedades neurodegenerativas, alergia, asma, pancreatitis, falla de múltiples órganos, enfermedades renales, acumulación de plaquetas, cáncer, movilidad del esperma, rechazo de trasplante, rechazo de injerto, y lesiones pulmonares. De una manera más adecuada, la presente invención se refiere a compuestos de bencimidazol selectivos de PI3Kb para el tratamiento de cáncer.
Patent DO-P2022000025-A (DO)
Title: Compuestos agonistas de gipr
Inventor: HONGCHANG QU
IPC: A61P3/10
Filed: 2022-01-31
Abstract: La presente invención se refiere a compuestos que tienen actividad en el receptor de polipéptido insulinotrópico dependiente de glucosa (GIP) humano. La presente invención se refiere además a compuestos que tienen una duración de acción prolongada en el receptor de GIP. Tales compuestos pueden ser útiles en el tratamiento de la diabetes, que incluye diabetes mellitus tipo 2 ("T2DM"). Además, los compuestos pueden ser útiles en el tratamiento de la obesidad.
Patent DO-P2023000202-A (DO)
Title: Terapia de combinación que implica anticuerpos contra claudina 18.2 para el tratamiento del cáncer.
Inventor: PRANOB P BHATTACHARYA
IPC: A61K33/00
Filed: 2023-09-21
Abstract: La presente invención proporciona una terapia de combinación para tratar y/o prevenir enfermedades asociadas con células que expresan CLDN18.2, incluyendo enfermedades de cáncer tal como cáncer gástrico, cáncer de esófago, cáncer de páncreas, cáncer de pulmón, cáncer de ovario, cáncer de colon, cáncer hepático, cáncer de cabeza-cuello, y cáncer de la vesícula biliar y metástasis de los mismos.
Patent EC-SP12012339-A (EC)
Title: Una forma cristalina de clorhidrato de (r)-7-cloro-n-(quinuclidin-3-il)benzo[b]tiofeno-2-carboxamida monohidratado
Inventor: OLIVER-SHAFFER PATRICIA
IPC: C07D453/02
Filed: 2012-12-17
Abstract: Se describen formas cristalinas I y II de clorhidrato de (R)-7-cloro-N-(quinuclidin-3-il)benzo[b]tiofeno-2-carboxamida monohidratado y composiciones, procedimientos de fabricación y usos terapéuticos de las mismas.
Patent EC-SP14013266-A (EC)
Title: Barandilla de tubos y piezas prefabricadas de acero inoxidable
Inventor: PUNTER GIL JESUS
IPC: E04F11/18
Filed: 2014-03-24
Abstract: BARANDILLA DE TUBOS Y PIEZAS PREFABRICADAS DE ACERO INOXIDABLE del tipo de las que emplean barras (1) longitudinales enfrentadas y una pluralidad de barrotes (2) verticales; y en donde para la fijación de la barandilla al forjado existen unos pilares (6) a los que se fijan las barras (1) mediante escuadras (10), estando dichos pilares (6) fijados al forjado mediante una placa de anclaje (11); y que está caracterizado porque los barrotes (2) se fijan a las barras (1) mediante un tornillo pasador (5) que los bloquea atravesándolos total o parcialmente; y donde las escuadras (10) presentan una embutición cónica (7), para la fijación a la barra (1) longitudinal mediante un tornillo de cabeza cónica (9); y donde, la placa (11) presenta unas perforaciones (12) para anclar el pilar (6) al forjado con tornillos (8), así como unos agujeros roscados (13) para nivelar de dicho pilar (6) mediante tornillos (5).
Patent GB-189705124-A (GB)
Title: Improvements in Post-cards.
Inventor: THORPE EDWARD
Filed: 1897-02-25
Granted: 1897-12-24
Abstract: 5124. Thorpe, E. Feb. 25. Letter - c a r d s ; postcards. - The card is folded across the middle, and is secured by the flap a. A line of perforations may be made across the middle to facilitate folding.
Patent GB-189705175-A (GB)
Title: A Fastener for Waist Sashes and Ties.
Inventor: BRYCE VIOLET
Filed: 1897-02-26
Granted: 1897-11-06
Abstract: 5175. Bryce. V. Feb. 26. Clip fastenings; necktie fastenings.-Relates to fastenings for holding sashes and ties in position for tying the ends in bows or knots. Fig. 1 shows the fastening, consisting of two bars A, B hinged at C, having a catch at E. Alternating series of pins or teeth D are arranged along the bars.
Patent GB-189706863-A (GB)
Title: A Portable Coin Freed Apparatus for Generating Röntgen Rays.
Inventor: VIDAL MAURICE
Filed: 1897-03-16
Granted: 1898-03-16
Abstract: 6863. Vidal, M. March 16. R÷ntgen-ray apparatus.- The circuit of the generating-apparatus is completed for a definite time after the insertion of a coin and the operation of a pusher which winds up a clock and raises a shutter in the viewing-box. The coin dropped down a shoot 34 above one end of a beam 9 tilts it till a metallic piece 10 at the other end registers with two strap terminals 13, 14. On thrusting a pusher 27 against a lever 31 the mainspring of clockwork in a box 18 is wound up, and an arm 20 turning with the lever makes a cam 15 press the terminals and intermediate piece into mutual contact so that the circuit of the coil is completed till an arm 21 reverses the cam. The shutter in the viewing-box is raised by the action of a pusher on a lever m, which is thrust behind a pawl 32 that is subsequently tripped by a knock when the cam is reversed. Normally, the coin is prevented from rolling off the tilted beam 9 by a vertical plate 24 on a swivel 22 set by a spring 25, but a rear extension of the winding-lever of the clockwork turns the swivel sufficiently to displace the stop plate from the end of the beam, whereupon the coin rolls off.
Patent GB-189711413-A (GB)
Title: Improved Electrical Signalling Apparatus for Transmitting Commands and the like.
Filed: 1897-05-07
Granted: 1897-11-13
Abstract: 11,413. Abel, C. D., [Allgemeine Elektricitõts-Gesellschaft]. May 7. Order apparatus.- Relates to electrical apparatus for transmitting commands and the like. The transmitter consists of a closed coil a, which is supplied with current at two diametrically-opposite points through the leads k, k, and the contacts b<1>, b<2> on the revoluble bar b. This bar is rotated by a suitable hand-lever. The receiver comprises three coils f<1>, f<2>, f<3>, or a multiple of three coils, arranged symmetrically around the central revoluble magnet g which carries the pointer h, these coils being .connected by the leads e', e<2>, e<3>, to the three points d<1>, d<2>, d3, situated 120‹ apart on the coil a. The arrangement is such that each movement of the lever of the transmitter produces a variation of resistance in the coil a, which causes a corresponding change in the magnetic field of the coils of the receiver, and a corresponding alteration of the position of the pointer h. In a modification, the axes of the coils f<1>, f<2>, f<3> are parallel to the axis of the magnet g.
Patent GB-189714742-A (GB)
Title: Improvements in and Appertaining to Apparatus for the Manufacture of Acetylene Gas.
Inventor: FOWLER THOMAS ROW
Filed: 1897-06-18
Granted: 1898-06-04
Abstract: 14,742. Fowler, T. R. June 18. Acetylene.-Two generators for alternate use consist of an open outer chamber 1 and a closed inner chamber 2, the latter containing openwork carbide containers supported above the bottom by the part 4 of a pipe 9, 4, 10 connecting the two chambers. Water is supplied from a tank 24 by a pipe 26 to the chamber 1, whence it flows by the pipe 9, 4, 10 into the inner chamber 2. The gas produced passes by a pipe 13, fitted with a cock 12, to a coil 21 supported by the inner wall 20 of the tank of the gas-holder bell 23. After the water has risen within the inner chamber 2 above the pipe 9, 4, 10, the level rises in both chambers at the same rate, so that the progress of decomposition of the carbide is readily observed. The supply of water to the chamber 1 is controlled by a valve 27 connected by a chain 28 and lever 29 with a rod 30, on which is an adjustable nut 34 in the path of the top flange 33 of the bell 23. The nuts 34 are adjusted by hand so as to put only one generator in use at the same time. Each generator is fitted with a drain cock 5, which is connected by a pipe 15 and cock 14 with the top of the generator for drawing off the residue of gas with the water and lime. The cocks 5, 14, and 12 are connected by levers with the same handle 17, so that the cock 12 is always closed when the cocks 14 and 5 are opened. An arm 18 projecting from the handle 17 over the cover 6 of the generator prevents the removal of the latter before the cock 12 is closed. A pipe 43 connects the chambers 1 in order that the second generator may be started automatically if the exhaustion of the first should be unobserved. A safety escape pipe 35, which is normally sealed by a pipe 36 depending from the top of the bell 23, conducts away excess of gas when the bell is raised too high. Pipes 37, 39, and 41 conduct water of condensation from the pipes 35, 13, and 40 to a well 38.
Patent GB-189716526-A (GB)
Filed: 1897-07-13
Granted: 1897-10-16
Abstract: 16,526. Fletcher, E. L., Russell, W., and Fletcher, Russell, & Co. July 13. Gas and oil stoves.- To give the appearance of an incandescent stove to an oil or gas stove such as that shown in the Figure, where an illuminating burner E and a reflecting-back B are employed, blocks of imitation fuel C, coloured and perforated to give the effect of glowing fuel, are mounted in a frame or cage D. This frame may be circular or polygonal, and may surround the lamp or gas burner.
Patent GB-189718034-A (GB)
Title: Improvements in or relating to Driving-gear for Cycles and other Vehicles.
Inventor: EHRHARDT HEINRICH
Filed: 1897-07-31
Granted: 1898-03-26
Abstract: 18,034. Ehrhardt, H. July 31. Driving-mechanism, variable-speed. The Figures show the application of the invention to a bicycle. On the inner side of one of the pedal cranks d are fixed two spur-wheels or concentric rings of teeth e, e<1> as shown. A wheel c, mounted on a hexagonal part of a tube a carried in ball bearings by the cycle frame, can slide into engagement with either set of teeth e or e<1>. A spring stop f fitting into holes in the tube a secures it in either position. A gearwheel b, secured to the rear end of the tube a, engages holes formed in a disc g fixed to the driving-wheel hub and drives the cycle. In order to diminish the travel of the wheel c, a wide wheel, or two wheels secured together, may be used. In a modification, conical teeth secured to the crank engage either of two rows of teeth formed on a drum-wheel which replaces the wheel c. Figs. 9 and 11 show another modification. Two wheels p and q secured to a tube 0 engage holes formed in discs l, l<1> as shown in Fig. 9. The tube 0 is mounted on a rod m, having eccentric pins n, n<1> pivoted in the frame as shown in Fig. 11. A cog-wheel r on the pin n engages a worm S. On turning the worm by means of the rod S' carried up to the top bar, the rod m moves into the position shown in Fig. 11, and permits the tube 0 to slide along it until the wheels p, q are in a position to engage the other series of holes, when the rod m is returned to its original position. The pin n may be extended rearwards and operated by a hand-wheel fixed on it.
Patent GB-189718250-A (GB)
Title: Process for the Preparation of Easily Soluble Compounds of Formic Aldehyde for Preserving, Disinfecting, and Therapeutic Purposes.
Inventor: OPPERMANN HEINRICH
Filed: 1897-08-05
Granted: 1897-09-18
Abstract: 18,250. Oppermann, H. Aug. 5. Disinfectants and antiseptics; medicinal preparations.-Preserving, disinfecting, and therapeutic compounds, which are easily soluble in water, are prepared by combining formic aldehyde with other antiseptic, disinfecting, or therapeutic compounds by means of ammonia. The substances are mixed together and the mixture is kept cool ; if the product does not crystallize out, the mixture is evaporated in vacuo at a low temperature. Combinations of formic aldehyde and ammonia are described with potassium bitartrate, boracic acid, salicylic acid, carbolic acid, and with both tannin and boracic acid, menthol and carbolic acid, and potassium bitartrate and citric or salicylic acid.
Patent GB-189719799-A (GB)
Title: Improvements in Vehicle Wheels.
Inventor: COLLINS HARRY RAYMOND
Filed: 1897-08-27
Granted: 1897-11-13
Abstract: 19,799. Collins, H. R. Aug. 27. Pneumatic wheels; felloes or rims ; hubs ; spokes; tyres, elastic other than pneumatic.-A pneumatic tube C' is situated between the spoke ring d and the saddle, space being allowed for the lateral expansion of the tube. The saddle is formed in two sections B, B' carried by the hub, the part B being screwed on to a right-handed screw thread thereon, and the part B<1> slid into position and held there by the ring b<3> engaging with a left-handed screw thread. The end of the section B has an extension which engages with a corresponding hollow in the section B', and when these sections are locked together they secure in place the auxiliary saddle seats C, which prevent the tube C' from being worn. The spoke ring is formed with annular recesses in which fit packing- rings d' adapted to lessen friction and exclude dust and is joined to the saddle sections by a rod e<1> which has ball bearings at each end. The spokes G are interlaced between the spoke ring and the wheel rim, The saddle sections are formed of sheet steel pressed into the required shape, and the portions b<8> thereof may be provided with strengthening ribs or corrugations. The rim 3 and tyre are made in the form shown in Fig. 21. Fig. 6 shows a dust-proof ball bearing, in which the cone h<3> has a projecting flange h<6> and a groove in which is placed a washer h<5>, while the ball-race has a projection h<2> adapted to enter the cone and overlie the packing. The sprocketwheel I engages with a right-handed screw thread on one end of the hub, and is looked thereon by a nut i engaging with a left-handed screw thread on a reduced portion of the hub. In modifications, both saddle sections are screwed on to the hub, from which motion is communicated to the spoke ring by means of arms on the ring carrying friction rollers which engage with radial grooves in the saddle sections.