US922680A - Miter-box. - Google Patents

Description

W. H. EASTMAN.

MITER BOX.

APPLICATION FILED AUG.2B,1908.

922,680. 7 Patented May 25, 1909.

ETERS co., WASHINGTON, n. c.

WILLIAM EASTMAN, OF CONCORD, NEW HAMPSHIRE.

METER-BOX.

No. esaeeo.

Application filed August 26, 1908.

To all whom it may concern:

Be it known that i, l/VILLIAM H. EASTMAN, a citizen of the United States, residing at Concord, in the county of Merrimack and State of New Hampshire, have invented an improvement in Miter-Boxes, of which the following description, in connection with the accompanying drawing, is a specification, nections serve as the guides against which. the strip or article to be cut in the miter box like letters on the drawing representing like parts.

This invention relates to an improved miter box, and its object is to present a miter box which shall be of strong and durable construction and which can be folded up into a 'l small space, and which can be adjusted to fit any angle, whether an interior or an exterior angle.

T he device of this invention is so con structed that it can be folded into a very narrow space so as to take up but little room in a tool-box or other place.

lhe drawings represent the invention in its preferred form as adapted for use by car penters and mechanics, or by any one desiring such an ar" ':le.

In the drawings, Figure l is a top plan view of the device set at an angle of 90. Fig. 2 is a plan view of the device in closed position Fig. 3 is a side elevation of one pivotal connection of the device, partially in cross section, on the line rc:r. Fig. 4 is a side elevation of another pivotal connection of the device, partially in cross section, on the line r1/- The miter box is constructed of four thin, flat, straight-edged bars, of iron, steel, or other suitable metal. One of the bars, as A, and preferably both, as A and B, are much longer than the others, and are pivoted to gether so that one bar, as the bar A, rests on top of the other by a suitable pivot pin 0.

The remaining two bars, 1) and E, are made of equal length and pivoted together with one bar on top of the other, as D on top of E, by a suitable pivotal connection F.

The bars D and E are respectively pivoted to the long bars B and A by pivotal connections G, H, which are equidistant from the pivotal connection C, and preferably the distance from the pivotal connection C to the pivots G and H is exactly equal to the lengths of tile bars D and E.

The bars and E are pivoted to the bars 13 and A so that the oppositely-disposed bars D and A are on top of the oppositely-disposed bars B and E. Hence the device may Specification of Letters Patent.

Patented May 25, 1909.

Serial N0. 50,311.

be folded up into snug position, as shown in Fig. 2, the bar B swinging beneath the bars D and A and the bar A swinging on top of the bars 13 and E.

Each of the pivotal connections C, H, F, G, are extended above the bars a considerable distance and each connection is of equal exterior diameter so that the sides of the conis placed.

I One of the pivotal connections, as H, is further so constructed as to serve as a means for locking the bars in. adjusted position. To this end the pivot pin H is screw-threaded at its upper end at H. A sleeve H is slipped over the pivot pin and a set-screw H fitted on the screw-threaded portion H of the pin to abut against the sleeve H By this means upon screwing and unscrewing the said screw the bars A and B may be clamped or unclamped between the bottom end of the sleeve H and the head of the pivot pin H.

The oppositely arranged pivotal connections C and F are slotted longitudinally to provide a guide for the saw, the upper portion of the slot fitting the saw closely and the lower portion 0 of the slot being preferably wider to obviate undue friction.

1n the operation of the device when it is desired say to cut pieces of molding to fit an interior angle of a room, the device will be placed up in the angle of the room so that the edges of the bars A and B fit against the walls of the angle. The set-screw H will then be tightened up, looking the miter box in adjusted position. The strips to be cut will then be laid against the connections G and C, and G and H, respectively, and the saw run through the connections 0 and F.

If it is desired to fit the molding, for example, about an exterior angle, as the corners of a desk or box, the miter box will be placed so that the inner edge of the prolongations A or B of the bars A or B, and the adjacent edge of the bars E or D fit over the exterior angle. The screw H is then tightened up as before, looking the miter box in adjusted position and the molding is cut in the same manner as before, because these angles measured between the prolongations of the long bars and the bars 1) and E are equal to the angle at the pivotal connection C, when the miter box is adjusted.

It will thus be seen that a very strong and efiicient construction is provided which may be adjusted for use in any position and which may be packed into a small and compact space.

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

1. A miter box consisting of four fiat bars pivoted together to form a quadrilateral parallelogram, each of said pivots being extended to serve as guides for the work, one of said pivots being provided with a locking device to lock the bars from pivotal move ment, one of said bars being extended past a pivotal connection to provide for fitting external angles, the two adjacent pivotal connections being slotted longitudinally to receive and guide a saw-blade.

2. A miter box consisting of two long bars pivoted together, two short bars of equal length pivoted together, both of said pivots being extended and slotted longitudinally to receive a saw-blade, pivotal connections equi-distant from the pivotal point of the two long bars between the ends of the two short bars and the two long bars, both of said pivotal connections being extended to serve as guides, means mounted on one of said ex tended pivotal connections to lock the bars from pivotal movement.

3. A miter box consisting of two long flat bars pivoted at their ends one on top of the other, two similar short bars of equal length pivoted at their ends one on top of the other, pivotal connections between theother ends of the short bars and the long bars at points equi distant from the pivot of the latter with the short bars lying in the same plane respectively as the opposite bars, whereby the four bars can be swung upon their pivots into substantial parallelism with one long and one short bar lying on top of the other long and the other short bar, the pivots being extended at each of the four points to serve as guides for the Work, and those pivots connecting the ends of the two short and the ends of the two long bars being slotted longitudinally to receive and guide the saw-blade.

4. A miter box comprising four flat bars pivoted together to form a quadrilateral figure the bars extending in opposite directions from one of the pivotal connections being pivoted respectively upon and beneath the bars extending from the oppositely-disposed pivotal connection at equal distances therefrom, one of the other two pivotal connections comprising a pivot pin passing through the bars, a sleeve slipped over the pivot pin and between the lower end of which and the pivot head the bars are clamped, and a set screw on the upper end of the pivot pin for clamping the sleeve against the bars.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

WILLIAM H. EASTMAN.

Witnesses:

L. E. GILroRD, LIZZIE HARVEY.

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