US Patent: 255,123
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| Surface Gage
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Patentee:
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| Laroy S. Starrett (exact or similar names) - Athol, Worcester County, MA |
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Patent Dates:
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| Applied: |
Nov. 21, 1881 |
| Granted: |
Mar. 21, 1882 |
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Patent Pictures:
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Joel Havens
The Starrett Story
Wikipedia entry for the L. S. Starrett Company
"Vintage Machinery" entry for L. S. Starrett Co.
History of the L. S. Starrett Co.
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Description: |
| This Surface Gage was #52 in the Starrett #21 catalog.
Claims:
The nature of my invention or improvement is defined in the following claims.
In the drawings, A denotes a cylindrical standard, having a screw, a, cut on it at its lower end to receive a nut, B, arranged as represented within the recess or notch b, as shown, in a stand, C. This stand has a circular base, c, within which is a right-angular notch, d, all being as represented. The standard A extends vertically through the stand, and is grooved longitudinally from top to bottom, as shown at c in side view in Fig. 5, and in transverse section in Fig. 6, such groove c being to. receive the inner end of a screw, D, screwed into the upper part of the stand G. This groove and screw are to prevent the standard A from turning around in the stand while the nut B may be in revolution on the screw a. is a clamp-screw, for clamping the standard A in position. A collar, E, is provided with a clamp-screw, F, screwed into it and entering the groove c. This clamp-screw not only serves to fix the collar at any desirable altitude on the standard, but with the groove prevents the collar from turning on the standard. The collar is furnished with a cylindrical projection, f, whose axis is at right angles with that of the collar. The projection has a tapering bore, g, to receive a screw, G, whose shank is tapering, and with the spherical head is split lengthwise, the head being bored transversely to receive the pointer H, formed as represented. A nut, I, is screwed on the screw G and against one end of the projection f. On setting up the nut the screw G will not only be drawn tightly 1 into its tapering socket, and thereby be held from revolving, but the head will be contracted upon the pointer, so as to clamp it to the said head. f
The notch d in the base of the stand C is t0 admit of the pointer being extended down through the base. With a base as arranged and represented, with the standard, and provided with the said notch, a better support for the standard on any flat surface can be obtained than when a stand is made without such notch and to project in opposite ways unequal distances from the axis of the standard A. By means of the nut B and screw a the accurate vertical adjustment of the pointer in altitude can be attained after an approximate adjustment of it may have been elected by means of the collar E, clamp-screw F, screw G, and nut I. |
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