US Patent: 720,773
|
| Outside Calipers
|
|
Patentee:
|
|
| Martin H. Ball (exact or similar names) - Watervliet, NY |
|
|
Patent Dates:
|
| Applied: |
Jul. 11, 1902 |
| Granted: |
Feb. 17, 1903 |
|
Patent Pictures:
[
1 | 2
]
|
|
|
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
"Vintage Machinery" entry for Goodell-Pratt Co.
|
|
Description: |
| Abstract:
The object of this invention is to provide a caliper to accurately and conveniently take all outside measurements that are customarily taken with the ordinary plain and spring outside calipers in common use and also to take measurements as indicated in the accompanying drawings, as thickness of metal in a bar, as shown, when the operator does not have access to either end of same, or to any place along the sides where the bar is no thicker than at the portion to be measured that has to be spanned by the calipers before reaching the portion to be measured.
Claim:
The combination in outside calipers of the legs thereof, an adjusting-screw having socketed engagement with one of the legs, a stud C pivotally mounted in the other leg and io having a transverse aperture threaded to receive said screw, a barrel E screw-threaded at one end to fit said adjusting-screw and at the other end shaped to abut against and fit around said stud C the end of said barrel in which abuts against said stud being bored out to receive a spiral spring, and said spring bearing at one end against the bottom of the bored-out portion of said barrel and at the other end, against said stud. |
|
){kind=link}
){kind=link}