US Patent: 403,726
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| Micrometer Gage
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Patentee:
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| Stephen H. Bellows (exact or similar names) - Athol, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 16, 1889 |
| Granted: |
May 21, 1889 |
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Joel Havens
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Description: |
| This invention relates to that type of micrometer-gages wherein a screw is lengthwise adjustable in a jaw which is adjustable on a graduated beam, so that its point co-acts with an opposite fixed jaw or arm for the measurement of objects between the point of the screw and the fixed jaw or arm of the frame. The objects of my invention are to improve such type of micrometer-gages and render them capable of a wide range of adjustment for close and accurate measurements; to provide a micrometer caliper-gage that is not confined to measurements within the scope of the adjustable screw, but wherein a slide having a wide range of movement and adjustment is provided with a lengthwise adjustable micrometer-screw, the point of which projects beyond the slide to co-act with a contact-point on a fixed or stationary jaw for the accurate measurement of articles largely varying in thickness; to provide a micrometer caliper-gage with novel means for taking up the lost motion of and finely adjusting the slide that carries the lengthwise-adjustable micrometer-screw and for bringing the graduations of the beam and slide into accurate coincidence, and to provide a novel micrometer caliper-gage wherein one face of the slide carrying the micrometer-screw is located in the same plane with and exposes the entire graduated face of the beam, so that all the graduations are always visible and can be quickly read, while the mechanism for locking the slide brings the latter solidly and squarely upon the edge of the beam without the crowding motion so liable where a set screw passes through a slide and bears against the square edge of a beam or bar. |
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