US Patent: 397,442
|
Micrometer Gage
|
Patentee:
|
|
Charles H. Russom (exact or similar names) - Springfield, IL |
Manufacturer: |
Not known to have been produced |
|
Patent Dates:
|
Applied: |
Jun. 25, 1888 |
Granted: |
Feb. 05, 1889 |
USPTO (New site tip) Google Patents
Report data errors or omissions to steward
Joel Havens
|
Description: |
The purposes of my invention are, first, to provide a micrometer adapted to measure the fractional parts of an inch divided on the scale of the ordinary carpenter's rule, to wit, one-half, one-quarter, one-eighth, one-sixteenth of an inch, and so on to one sixty fourth of an inch, also one-tenth part of one sixty-fourth of an inch;
second, to provide an improved adjustable nut inclosing the micrometer-screw, and through which said screw works; third, to provide a conical screw thimble of improved construction for clumping the adjustable nut against the micrometer-screw;
fourth, to securely enclose the working parts of the micrometer to protect them from injury;
fifth, to provide an improved means for attaching the micrometer screw to the outer shell of the micrometer, thus attaining more perfect alignment of the parts;
sixth, to provide a convenient and effective means for clamping the micrometer to the micrometer-stand when used as a surface gage, &c.
|
|