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UNITED STATES PATENT OFFICE.
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JUSTUS A. TRAUT, OF NEW BRITAIN, CONNECTICUT.
IMPROVEMENT IN DEVICES FOR ADJUSTING PLANE-IIRONS.
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Specification forming part of Letters Patent No. 186,281, dated January 16, 1877; application filed January 24, 1876.
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To all whom it may concern:
Be it known that I, JUSTUS A. TRAUT, of New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Devices for Adjusting Plane Irons, of which the following is a specification:
My invention consists in the employment, in a plane-stock, of a revolving handle provided with a scroll-thread upon its face, all as hereinafter described:
In the accompanying drawing, Figure 1 is a central longitudinal section of a plane, showing an adjusting device which embodies my invention. Fig. 2 is a plan view of detached parts thereof, showing the frog and scroll-thread.
The stock A and handle B may be of any ordinary construction, and either of wood or iron. The cap-plate C and plane-iron D, together with the fastening device E, may also be of any construction now known. Upon an arm, a, or other support secured. to the body of the stock A, I place a revolving handle, b, the edge of which is made ina convenient form to be rotated by hand, and the upper face of which is provided with a scroll-thread, c. This revolving handle and scroll is so secured to the stock; that its face will be nearly in line with the face of the frog d, which supports the plane-iron. I form a lug, g, on the cap-plate C, which projects downward, and through the slot in the plane-iron D. The plane-iron and its cap-plate are secured together by the screw it in the ordinary manner, so that both move together. The lug g is so placed in the cap-plate that when in position for use, as shown in Fig. 1, it engages with the scroll-thread c.
By rotating the handle b in one direction the lug g will be thrown toward the outer end of the scroll, and it will carry the cap-plate and plane-iron with it, and draw them into the stock A. By reversing the movement of the scroll-thread the lug and plane-iron are carried in the opposite direction, whereby any desired adjustment of the plane-iron may be effected.
I have herein described the lug g as set in the cap-plate C; but it is evident that the result would be the same in case the lug g were set in the plane-iron D, and that more than one lug might be employed, if desired.
What I claim as my invention, and desire to secure by Letters Patent, is —
ln a plane-stock, the revolving handle b, provided with a scroll-thread, c, upon its face, constructed and operating substantially as described, and for the purposes set forth.
JUSTUS A. TRAUT.
Witnesses:
T. A. CONKLIN,
JAMES SHEPARD.
