US81144A

US81144A - Improved sukface-gauge

Info

Publication number: US81144A
Authority: US
Publication date: 1868-08-18
Anticipated expiration: 1885-08-18

Description

` PETER-S, PMoTo-UTHOGRAPNER. WASHINGTON D C WILLIAM F. CORNELL, OF ADRIAN, `MICHIGAN.

Laim .Pat-em No, 81,144, dated August 18, 1868.

turnover SURFACE-GAUGE.

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'ro ALL wHoMu'r MAY CQNGERN:

Be it known that I, WILLIAM F. CORNELL, ofthe eityof Adrian, in the county of Lenawee, and State of Michigan, have invented a new and useful Improvement in Surface-Gauges; and-I do hereby declare the following'to be a full, clear, and exact description ofthe same, which will enable others skilled in the art to make and use'my invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of -this specification, like letters referring to like parts.

Myyinventiou consists in a surface-gauge for machinists; so constructed that hy the luse of one adjustable screw the surface and scribing-point are held in any position -or elevation desired.k

To enable others skilled in the art to make and use my invention, I will proceed todescribe its construction and operation.

In the drawngs- Figure 1 represents aperspective view of a surface-gauge embodying my invention.;- Figur-e 2 represents a sectional view of my improved gauge, passing through the centre of the spindle B, and parallel with the pointer C. i v

Figure 3 represents a horizontal section, passing through the centre of the adjustable screw D, andcentre of the pointer C placed in a horizontal'posi'tion.

Figure 4represents a T-headed arbor, at right angles with the centre of the pointer-G.

,Figure 5-represents a transverse section of this arbor,'together with a conical-shaped washer, b.

A represents the base.

B represents the spindle.

E represents a cylindrical clasp.

D represents the adjustable screw.

C represents the pointer.

o represents a 'semispherical staple.

-1 l represent countersunk seats.

H represents a T-headed arbor..

N represents a T-'ended collar.

represents Aa conical-shaped washer.

z' i represent conical shoulders. I

This' washer b is placed between the cylindrical clasp E and the adjustable screw D, and has a feather, c, topreventit from turning upon the arbor H, but allowing, at the sometime, a movement to andvfro upon the arbor.

In fig. 4, the T-ended collar is represented as' shoved back on the-arbor H, away from the pointer C., Having thus described the construction of my improved surface-gauge, I will now describe itsoperation' and use.

I first unscrew the adjustable screw D. This unlooses all the adjustable parts, and allows the cylindrical clasp E to move freely up or down the spindle, and allsofthe' pointer C to move lengthwise between the concave clamps formed bythe head ofthe T-hended arbor and the end ofthe T-ended collar, and allows, also, a revolv- 'ing movement of the pointer C around its own centre,'and also around the centre of the T-headed arbor H, and thus bringing the pointer C in any position desired.

I next (in order to hold the pointer C in this positionyclaspl the Aspindle B with one hand, and with the other tighten up the `adjustable screw D, which presses against the conical-shaped washer b, and this, in-turn, against a corresponding seat in the end of one of the bosses of the cylindrical clamp E, and, simultaneously, the arbor Hdraws its concave head against the pointer C, and this also, Ain turn, against the'concave of the T-endedl collar N, which presses its conical shoulder against a corresponding seat inthe other boss of the clasp E.

Olazms. what I claim as new, and desire to secure by Letters Patent, is

lindrical head, and semispherical stapleo, in combination with purpose of forming a. clasp, all con- Having thus described my invention,

1. TheT-headed arbor H,vha.ving a. semi-cy the T-ended collar N, with its concave and semi-cylindrical end, for the structed in the manner and for the purpose set forth and described.

2. The conical-shaped washer b, and feather e, in combination wit H, constructed in the'manner set forth and described.

` WM. F. CORNELL.

Witnesses:

JOHN P. CHURCH, G. F. PARTMDGE.

h the clasp E, nut D, and r-headed arbor