US Patent: 1,698,254
|
| Power Chuck
|
|
Patentee:
|
|
| Edward Payson Bullard, Jr. (exact or similar names) - Stratford, Fairfield County, CT |
|
|
Patent Dates:
|
| Applied: |
Feb. 09, 1925 |
| Granted: |
Jan. 08, 1929 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
Vintage Machinery entry for Bullard Machine Tool Co.
|
|
Description: |
| Abstract:
Application filed February This invention relates to 'an improved chuck and operating means thereof or, and particularly a mechanical chucking mechanism for turning or spindle machines, the present application being a division, in part, of my application Serial Number, 680,180, filed December 12, 1923. It will be understood that the invention, according to the present embodiments, may be used with various types of machines, as multiple or single spindle turning machines, stationary or rotatable drills, or the like. An object of the invention is to provide a chucking mechanism operated by the power of the machine, and which may be controlled with facility and precision. A further object is to provide a mechanism, which will be positive in operation, will operate at adjustable predetermined gripping pressures, and which will stop automatically as the chuck jaws reach the limits of their open or closed positions and furthermore, to insure such stopping at all times, irrespective of any actions of the operator, as for instance, when he holds the operating lever in either opening or closing position, after the limit of such positions has been reached.
Claim:
In a chucking device, a work table, chuck jaws carried thereby, a tubular spindle for said table, means for operating the jaws to grip and release the work including a shaft coaxial within said spindle, and rotatable with relation thereto and reversely moving gears coaxial with said shaft, and resistance operated means for automatically disconnecting said respective gears when the Schuck jaws have been opened or closed. |
|
