US306877A - Bench-plane - Google Patents

Description

(NoModel.) l

J. A. TRAU'I'.4

BENCH PLANE. No. 306,877. Patented 00m. 211884.

VII/1 711011111111,

wg m um" //7 4e/valor.

@WM f N. PETERS. Plwto-Llumgnpmr. wmmgwn, D. C.

y i'rog.

UNITED STATES ATENT OFFICE.

JUSTUS A. TRAUT, OF N EW BRITAIN, CONNECTICUT.

BENCH- PLANE.

v-3Pl?.CIFICATION forming part of Letters Patent No. 306,877, dated October 21, 1884.

(No model.)

.To @ZZ whom it may concern.:

Be it known that I, JUsTUs A. TRAUT. a citizen of the United States, residing at New Britain, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Bench-Planes, of which the following is a specification.

My invention relates toimprovements in bench-planes, and the object ot' my invention is to produce a better mechanism for adjusting the cutting-edge of the bit to square it with the stock. I attain this object by the lsimple construction illustrated in the accompanying drawings. in which-f Figure 1 is a side elevation of my improved bench-plane. Fig. 2 is a sectional viewthereof, partly in elevation, on line x x of Fig. l. Fig. 3 is a like view with cutter attached, and Fig. 4 is a sectional view thereof on'line i/ y ot' Fig. 2. y

It is oftentimes difficult to grind the cut.-

ting-edge of a plane-bit exactly square, audtherefore when set in place it does not stand square with the stock. j Several prior patentssiow planes having mechanism for effecting this lateral adjustment of the cutting-bit edgewise. one of which mechanisms is a lever arranged under the bit al the upper end of the Another consists of two screws the heads of which act upon thecdges of the bitat the upper end of the frog. Another patentshows side screws near the middle ot the stock. which. in connection with swinging dogs and a sliding piece, hold the bit in its adjusted position. All of said pricrart is hereby disclaimed. The major portion of my plane is the same as ordinary bench-planes. The particular plane illust rated is the one known as Baileys patent plane.

I secure the edgewise-adjusting. lever a to the plane seat or frog by means of the rivet b and washer d, said washer producing sufficient friction to keep the lever c in place when the cap is removed. This lever is also let into the frog or bit seat A, so as to bring its upper side just below the under side of the hit B, as shown in Figs. l and 4, and said frog or seat is also cut away, as at e, Fig. 2, in order to permit a lateral movement ofthe lever a. The lower end of said lever is pro vided with a projection, f, which rises above the surface of the frog or seat A a distance abontvequal to the thickness of the bit B, but not far enough to bind against the under surface ot' the cap-iron C. This projection f is of a width which will about till the ordinary slot for vthe cap-screw at the upper end ot' the bit. I prefer to provide the under side of the lever a with a small boss or trunnion concentric with the rivet b, on which it is fulerumed, and sink said trunnion into a circular recess. as. shown in Fig. 4; but this construction is n ot essential. I also provide the stock with stationary pins h h near thelower end of the bit B. upon which said bit can swingorfulcrutu when moved edgewise. These pins are threaded merely for convenience of insert-ion; but when once inserted plain pins will answer the same purpose.

Vhen the parts are 1n place ready for use, in order to adjust the bit edgewise to bring its edge square with the stock, it is only necessary to move the lever ct to one side, as shown in Fig. 3, which illustrates a bit whose end is ground ont of square to an unusual degree. It should be observed that the lever a is close up under the bit, and does not so project as to ever render any inconvenience whatever in the ordinary uses of the plane. I havel shownk this lever as thc best-known mechanism for an edgewise adjustment of the bit; but other-mechanism for this adjustment located at the upper end instead of the-lower end of the stock will secure the advantages of my invention.

'Ihevstatiouary pins arelocated in the stock, so as to bear directly upon the edges ofthe bit near its cutting end, and. as the laterallyadjusting mechanism is operated to move the upper end of the bit edgewise, it will rock or fulcrum upon the stationary pins at the lower end.

My mechanism 'for this edgewise adjustment does not in the least interfere with. the ordinary eudwise adjustment of the bit, and requires no change whatever in the ordinary parts ofthe plane, except to recess and drill the frog or bit and the stock for the reception and attachment ofthe lever a and pins lt It.

I claim as my invention- The combination of a plane stock and bit, an cdgewise-adjusting mechanism for acting upon the bit at its upper end, and the sta tionary fulcrum-pins h h in the stock near the cuttingend of the bit, substantially as described, and for the purpose specified.

JUBTUS A. TRAUT.

Vitnesses:

Janus SHEPARD, EDDY N. SMITH.

IOO

Images