US104458A - Improvement in miter-machines - Google Patents

Description

N-FETER PHOTO-LITHOGRAPHER, WASHINGTON. D C.

I ofthe figures.

1 otfthe guidesl' E is theplaningfhead, of the form of a hollow rect-A angular` prism, open at the topand` one end, and havf @aient dtjiirr.

jj @Marigot-aire 'JA-Mns n. HOWELL, or BUrrALd'NEw Yonne Letters Patent No. 104,458, (lated .Tune 21,1870.

i IMPROVEMENT IN' :WEITER-MACHINES.'

The Schedule referred to in thse Letters Patent and making part of the same l p 1, JAMES HOWELL, of the city of Buiialo, in the `county of Erie and State of New York, have invented certain new and useful Improvements iu HandMiter- `ing-liIachines, of which the following is a specification.

Mitering-machines, composed of a horizontal bed,

` with two adjustable rests or guides, and a' reciprocating planing-head between, provided with a planing-duce on the twosides contiguous to the rests, for chamfering two pieces at the same time, and actuated by a lever- `1 s rack andsegment arranged above the bed-plate, have i been known and used prior to the date ofmy invention. Such a machine is shown in the patent of Frank A. Howard, dated August 21, 1866.

i My invention, which relates to the kind of machineV .i above referred to, consists 4 "First, in arranging the operating lever and segment under thejbedeplate with `the lever-handle project-ing i in front thereof, in connection with a spring for prodncing the return movement of the lever and segment,

wherebythe planing-.head can be operatedwith greater f easeand' facility, and the rack, both from its inverted position and-arrangement under the planing-head, is

protected from dirt, chips, Ste., Second, in the arrangement, with each of the guides or rests, of a stationary post, p rojectingupward from the lied, against whichV the inner end Vof the former, when adjusted, is rigidly supported.

In the accompanying drawing- FigureI is aplan` of my improved machine; Figure II is a vertical section `in line a: x, iig. I; Figure III is a front elevation; and

i Figure IV is a central vertical section lof the head"l detached.` i

Like lcttersfof reference designate like parts in 'each .Aris a semicircular bed, preferably of cast-iron, sc-

by Set-screws d (l passing through the slotted arms c ing its base dovetailed to t in the way fy of the bed, in which it reciprocates. y

The two-opposite faces e e, adjacent to the bed, are

f. provided with planing-knives or cliisels e, secured in place by a set-screw, e, as shown.

g represents the rack, cast4 or otherwise formed on "required the under side of the head, with which engages the segment H, a suitable slot being formed in the bed A for the purpose. a

This segment is pivoted between two bearings, a a, pendent from the bed A, and has extending therefrom the 4lever H', by which itis actuated.

'J is a spring, attached to the under side of thc bed, with its free end engaging in a notch in theend of the segment, as clearly shown in fig. I I. v

m ni' are the two posts or supports, projecting upward from the hed, and arranged at the converging ends of the guides C, so as to steady and more firmly support the same against the pressure-of the wood an unnecessary waste of metal.

My improved arrangement disposcs the parts wher they are out of the way, and also prevents the dirt and shavings from collecting thereon and obstructing the movement ofthe segment, as hereinbefore stated.

It brings the lever in a position for being much more conveniently actuated, and enables a reacting spring to be employed, to still further economize in the application of the power required to'operate the machine.

By properly adj usting the guidesor rests, it is evi- -dent that pieces of wood can be mitered, so that the apex formed by the united `ends will be of any angle I am aware that the combination of aretufrn-spring with a 'lever-segment is 'notlnew, being shownin the patent of A. rlhompson, dated April 25, 1843. I,

therefore, do not claim such combination; but

What I claim as my invention is- 1. The arrangement, as herein described and shown,

of the bed A, planing-head E g, adjustable guides@ C, lever-segmentrH H', and return-spring J. 2. The arrangement, with the reciprocating-head E and adjustable guides C, of the rigid posts fm. fm, in the manner and for the purpose hereinbeforc set forth.

J. R. HOWE LLL Witnesses:

J AY HYATT, JNO. J. BoNNEn.

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