US495019A - Island - Google Patents

Description

{No Model.)

- E. H. CARTER & J; J. BEARD.

HEIGHT GAGE.

No. 495,019. Patented Apr. 11, 1893.

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EDl/VIN H. CARTER AND JOHN J. BEARD, OF PROVIDENCE, RHODE ISLAND.

HEIGHT-GAG E.

SPECIFICATION forming part of Letters Patent No. 495,019, dated April 11, 1893.

Application filed September 13, 1892. Serial No. 445,833 (No model.)

To all whom it may concern: 7

Be it known that we, EDWIN H. CARTER and JOHN J. BEARD, citizens of the United States, residing at Providence,in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Height-Gages; and we do hereby declare the following to be a full,clear, and exact de' 'scription of the invention,such as will enable others skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Our invention relates to adjustable height gages, that is gages adapted to be used by machinists or tool makers.

It has been a common practice hitherto to employ gages consisting of a series of planed metal blocks varying in height, although in some cases adjustable blocks have been used. Height blocks of this class are especially adapted to gage the position of a planer tool or cutter preparatory to removing the metal from the piece of work to be operated upon.

The object we have in view is to provide a height gage with means whereby it can be veryaccurately adjusted, the gage at the same time having a wide range of adjustment and possessing great stability.

To this end our invention consists, essentially, of a base portion having a revoluble annular nut, provided with graduations, mounted therein and prevented from endwise movement, in combination with a removable screw-threaded standard having a scale or graduations thereon passing through and in contact with said nut, all as will be more fully hereinafter set forth and claimed.

By means of our improvement the gage can be readily adjusted in a vertical direction, the construction being such that micrometer readings can be made ofat leastone one-thousandth of an inch without difficulty. A further advantage of our height gage'is that by providing it with two or more standards varying in length, it can take the place of a series of ordinary height blocks; the cost of our improved gage being much less than the series of blocks.

In the accompanying sheet of drawings, Figure l is a side elevation, in partial section, of our improved height gage, the standard being at its lowest position. Fig. 2 is a similar view, showing the standard adjusted to its highest position. Fig. 3 is a top view. Fig. 4 is an inverted plan view, and Figs. 5 and 6 represent standards varying in length, there by adapting the gage to a greater range of adjustment.

A, again referring to the drawings, indicates our improved height gage complete; the same consisting essentially of the base or block portion b, the annular nut 41. and the standard 3. The base i) is bored out centrally to accurately receive the nut, the lattcr being prevented from moving longitudinally or endwise by means of the exterior circular flange n which is couuterbored into the upper end of the base; a cap Z2 keeping the nut in place. This cap is bored centrally to receive the upper portion of the nut; the top end a of the latter being beveled and provided with a series of peripheral divisions, forming a scale g, as clearly shown. The standard 3 is turned and ground so as to be true to size; its upper end being at exactly right angles with the sides or longitudinal axis. As drawn, the lower portion of the standard is enlarged in diameter, as at .9 said enlargement being screw-threaded and provided with a longitudinal groove or spline c. The standard is further provided with a series of transverse graduations, forming a scale 3', see Fig. 2, &c. A key is is rigidly secured to the base 1) below the lower end of the nut; this key extends upwardly through the spline c and a. distance into the nut, its upper end being free. Theikey is reduced in thickness along the portion adjacentto the nut to allow the latter to turn freely. By this arrangement it will be seen that the key acts as a guide for the standard and prevents it from turning.

The manner of operating our improved height gage is as follows lhe nut n is turned in the proper direction by the action of the thumb and finger upon the portion of the flange n (which may be milled or reeded) extending beyond the sides of the base I); see Fig. 3. The result of such action being to elevate or depress the standard 8 until the upper end of the latter reaches the desired point or distance. Assuming thescrew-threaded portion of the standard to have a thread say in the arrow-direction Fig.2, will elevate:

the standard one-fortieth of an inch; but if I it be turned only one twenty-fifth of a revosisting of the base with thecounter-bored lution the corresponding distance moved by the standard will be one twenty-fifth of one fortieth, or one one-thousandth of an inch. Obviously any other scale, either finer or coarser, may be adopted.

It the device be provided say with a series of interchangeablestandards s varying in length it is evident that its scope or range will be correspondingly increased. Moreover, the cost will be very much less than a corresponding number of complete gages, each having but one standard. 1

Figs. 5 and 6 show standards varying in length arranged to be used with the base 12. The standard 5 may be uniform in diameter (the enlarged portions s being omitted) and screw-threaded and splined throughout the whole or a portion of its length and the nut made correspondingly smaller in diameter if desired without departing from the spirit of our invention.

We claim as new and desire to secure by United States Letters Patent 1. The herein described height-gage, conhole formed vertically therein, a cylindrical annular nut fitted to and adapted to be rorated in said hole, a stationary key, in, ex-

tending upwardly into the nut and a screw threaded and splined standard trued off at its top end extending through the base and in engagement with said nut and key.

2. In a height-gage, the combination of the base, provided with a removable cap, a revoluble nut n seated in the base and extending upwardly through said cap, a standard passing centrally through the nut having its lower portion screw-threaded and splined and an elongated stationary key, fixed at its bottom end, in engagement with the splined. portion of said standard, arranged for operation substantially as described. I!

3. In a height-gage provided with a suitable base portion, the combination with the interiorly screw-threaded cylindrical nut m, arranged to be revolved in said base, having its upper end graduated to form a scale g, of a non-revolvingscrew-threaded standard passing through and coacting with said nut; the

standard being further provided with graduations 3 arranged to form with the nut divisions a micrometer scale, substantially as described. 7 I

4. In aheight gage, the combination of a base, a revoluble annular nut mounted therein and non-movable endwise, a stationary key extending longitudinally of and contiguous to the bore or threaded portion of said nut,

arranged to contact with the nut and key;

: the nutand standard having graduations thereon arranged to form amicrometer scale,

substantially as described.

In testimony whereof we have affixed our signatures in presence of two witnesses.

EDWIN: HTQCARTER. 1 JOHN J; BEARD.

I and a standard provided with ascrew-thread- 1 ed and splined enlargement at its lower end

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