US181345A - Improvement in carpenters gages - Google Patents

Description

' ZSheets--Sheetl C. H. B. HIJIGH'INSDIsT.l

cAnPENTERs GAGE.

No..181,345 Patented Aug. 22,1875.

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UNITED STATES PATENT OFFICE.

cHARLES H. B. HUToHINSoN, 0E MENoMoNEE, WISCONSIN.-

IMPROVMENT IN CARPENTERSN GAGES.

Specification forming part of Letters Patent No. 181,345, dated August 22, 1876; application led April 11, 1876.

To all whom z'tmcy concern Be it known that I, CHARLES H. B. HUTcH- INSON, of Menomonee, in the county of Dunn and State of Wisconsin, have invented a new and Improved Tool for Carpenters; and I hereby declare the following to be a full, clear, and exact description thereof', reference being had to the accompanying drawings, makinga part of this speciiication, in which- Figure lis a perspective View of myimproved instrument. Fig. 2 is a plan of the under side of the same. Fig. 3 shows my tool applied practically.

The object of my invention is to provide a I tool-for facilitating the laying out of sills and plates; and it consists of two arms having a stated measurement, and fastened by crosspieces, one of which has a fixed measurement, as hereinafter more fully described and claimed. l

In order that those skilled` in the art may make and use my invention, Iwill proceed to describe the manner in which I have carried it out.

In the said drawings, A A represent two blocks, connected by the crossbars c D, the latter one being provided with a scale, as shown in Fig. l. The other bar serves as a handle for the tool. The blocks A A' are also provided with scales on their outside and insidel surfaces, for purposes hereinafter explained. On the under sides, and at the rear ends of 'the blocks A A', I secure two adjustableV projections, a a', which form the shoulders 1. These projections are rendered adjustable, by means whereof any desired distance may beobtained on the scale in front of the shoulders, thus adding to the conveu ience and graduation of the scale itself. The

shoulders l are designed to rest against thevedge of the lumber to be laid off, and thus secure a steady and certain operation of the tool in laying off inortises. c

Fig. 3 shows the tool applied practically, and its mode of operation and its advantages `will be apparent to any one skilled in the art to which the tool appertains. I tind it works much more advantageously thanthe ordinary

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