US Patent: 2,301,525
|
| Milling Machine
|
|
Patentee:
|
|
| Frank W. Curtis (exact or similar names) - Springfield, Hampden County, MA |
|
|
Patent Dates:
|
| Applied: |
Mar. 08, 1940 |
| Granted: |
Nov. 10, 1942 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
"Vintage Machinery" entry for Van Norman Machine Tool Co.
|
|
Description: |
| The original application was divided and a second patent was issued, #2,338,624.
Abstract:
This invention relates primarily to improvements in milling machines, although in certain aspects these improvements may have a wider range of use.
One object of the invention is to improve the arrangement of gearing contained in the knee of a milling machine for driving the various table rates. In particular the invention is concerned with improvements in the manner in which the feed and rapid traverse drives are obtained from a single power drive shaft; in the arrangement of gearing whereby the weight distribution in and the consequent stability of the knee are improved; in the simplification of the distributing gearing for driving the table, saddle, and knee either forward or reverse at the selected rate, and in the arrangement of the gearing to facilitate a unitary control of the change gear mechanism. A further object is to improve the gear shifting control by which the feed rate is determined so that only a single handle need be moved to select the desired rate. A further object is to improve the knee structure so as to give improved stability and guidance to the elevating mechanism and so that the elevating mechanism itself will contribute to the stability of the knee. A further object is to improve the manner of mounting the shaft bearings in the knee to simplify their manufacture and increase their accessibility. A further object is to improve the table operating mechanism.
Claim:
In a machine tool having a bed, a knee vertically movable on the bed, a saddle transversely movable on the knee, a table longitudinally movable on the saddle, and a tool mounted for operation upon work carried by the table; mechanism for moving the knee, saddle, and table sleeve, speed changing mechanism within the knee laterally disposed with respect to said shaft and connecting the main drive with the sleeve, drive shafts for the knee, saddle and table each running from the front of the kneerearwardly, reversing clutch mechanism for each of said drive shafts each including a forward and a reverse gear and being positioned near the front of the knee, and distributing gearing positioned near the front of the knee and connecting the common drive shaft with said reversing clutches. |
|
