GB Patent: 185,586 - Device for Holding and Driving Revolving Drills, Reamers, and the Like


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GB Patent: GB-185,586

Device for Holding and Driving Revolving Drills, Reamers, and the Like

Patentee:

William T. Jones (exact or similar names) - Newark-on-Trent, Nottinghamshire County, England

USPTO Classifications:

Tool Categories:

metalworking machines : drilling and boring : drilling and boring tool holders

Assignees:

A. Ransome & Co., Ltd. - Newark-on-Trent, Nottinghamshire County, England

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Jul. 25, 1921
Granted:	Sep. 14, 1922

Patent Pictures:

Espacenet patent
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for A. Ransome & Co., Ltd.

Description:

Abstract:

A device for holding and driving drills, reamers, &c. comprises a pin C projecting through a hole in the machine spindle A, and engaging a flat surface on the end of the tool B. A rotatable ring F, provided with a knurled exterior and adapted to take a tommy-bar or spanner, has an eccentric groove G engaging the pin C, which is pressed outwards by a spring D. Rotation of the pin is prevented by a projection L engaging a groove in the spindle. For receiving smaller tools, a semicircular sleeve, having a key fitting a groove M, or alternatively a circular sleeve with a hole to accommodate the pin, may be used, a longer pin being then provided.