US39404A - Improved gage for metal-planing - Google Patents

Description

UNITED STATES PATENT OFFICE.

E. E. JENNINCs, oE NEW HAVEN, CONNECTICUT.

IMPROVED GGE FOR METAL-PLANING.

Speeication forming part of Letters Patent No. 39,404, dated August 4, V1863.

To a/ZZ whom it' may concern:

Be it known that I, HQE. JENNINGS, of

Fig. 2, a plan or top view of the same; Fig.

3, a detached side view of a piece of work to be planed and adjusted by my invention.

Similar letters of reference indicate correponding partsin the several .gures This invention relates to an improvement in gages, such as are employed on metalplaniig machines for adjusting workhorizontally or inclined on their beds, as may be required.

The object of the invention is to obtain a gage of the class specied which may be adjusted or manipulated with far greater nicety Athan `vthe ordinary ones in use, and with much greater facility, so as to economize iu time in adjusting the"work on the bed.

To this end the invention consists in the application of a spring and set-screw to the:

index-arm ofthe gage, as hereinafter set i'orth.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents a base, in which a flat vertical slotted bar, B, is permanently fitted, the slot a.. extending nearly the wholelength or height of the'bar B, and C represents 'an index-arm, which is also of flat form, one end terminating in a hook or curve, b, and the other end in a poi-nt, c, as shown clearly in Fig. l. This index-armhas also a longitudinal slot, d, made in it, through which and the slot a of the bar Y B a set-screw, D, passes, said set-screw also passing through a box, E, in which the indexarm C is titted and allowed to slide freely. In this box E a spring, F, is secured, which presses against one side oftheindexarm C, and through the opposite side of the box E a set- -screw, G, passes, which bears against theindex-arm, as shown clearly in Fig. l.

From the above description it will be seen that the index-arm C may beraised and lowered on the vertical bar B, and secured at any desired point by. means of the set-screw D; and, besides t'his'adjustment ofthe index-arm, it will be seen that the ends of the latter may be raised and lowered byv turning the setscrew Gr, which presses against the index-army and causes the spring F to yield. This. second adjustment of the index-arm admits of the endsot' the latter being moved very. nicely, and obviates the necessity of the' repeated trials which have to be made when the sliding of theindex-ar'm on the bar B is alone depended upon for the adjustment of the former.

In Fig. 1 a piece of work is shown in red' outline, with the curvedend b of the indexarm'over it. The implement is moved by hand arou-nd the bed of the planingmachine, and the end b is the index by which the Work is adjusted ina horizontal position. Y

In Fig. 3 a piece of work isl shown which is to have its upper surface planed to form an inclined surface. The Work has a line, ax, scratched at each side of it to serve as guides for the adjustment of the Work. In this adjustment the point c of the index-arm C is used, and the work is wedged up until the point c will tally or coincide with the lines at -each side of the work, the gage being shoved along the bed of the planing-machine at each side of the work. By this means the work'is adjusted in an inclined position, and the upper surface of the work will, 'of course, be planed ott' level, so as to have an inclined surface when the lower side of the Work rests on a level bed.

I do not claim theiudexarm and upright bar B, for they constitute the gage in com# mon use but,

Having thusfully described my invention, what I do claim-as new, and desire to secure by Letters Patent, is-

The spring F and set-screw G, in combina tion with the box E, index-arm'C, and upright bar B, all arranged substantially as shown, to form an improved implement or device for the purpose specified.

H. H. JENNINGS. Witnesses RUFUs S. PICKETT, HENRY J. HUBBARD.

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