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An Improved Appliance for Use with Drilling Machines, Lathes and the like Tools, for Drilling, Tapping, Screwing-in Studs and the like Operations.
An Improved Appliance for Use with Drilling Machines, Lathes and the like Tools, for Drilling, Tapping, Screwing-in Studs and the like Operations.
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机译：一种用于钻孔机，车床等工具的改进的器具，用于钻孔，攻丝，旋入螺柱等操作。
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摘要
28,654. British Hele - Shaw Patent Clutch Co., and Wallace, W. Dec. 8. Drawings to Specification. Metallic spring rings.-In connexion with a yielding-clutch device for drilling &c., a spring is described comprising a crimped or crinkled ring.
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机译：28,654。 British Hele-Shaw Patent Clutch Co.和Wallace，W. 12月8日。金属弹簧环-结合用于钻孔的屈服离合器装置，描述了一种包括卷曲或褶皱环的弹簧。
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