US88651A - Improvement in constructing- picture-frames - Google Patents

Description

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DANIEL W. MARSHALL, OF PAWTUCKET, RHODE ISLAND.

Leners Para: No. 88,651, me April 6, 1869.

IMPROVEMENT IN CONSTRUCTING PICTURE-FRA1WES #aaah- The Schedule referred in these Letters Patent and making part' of the same.

To all whom 'it l11m/y concern:

Be it known vthat I, DANIEL W. MARSHALL, of Pawtucket, in the county of Providence, and State of Rhode Island, have invented a new and useful Improvement in Picture-Frames; and I do hereby declare that the following specification, taken in connection with the drawings making a part of the same, is a full, clear, and exact description thereof.

The drawing represents in its severalparts, indicated as front, back,` andl side front, back, and-side views respectively of the frame.

A, Figures 6 and 7, represents the form of the blanks, which, when interlocked, will make a frame of the pattern shown at Figure l.

They consist of pieces of hard wood, or other suitable material, which can very conveniently and with great rapidity be cut from stud of Vthe thickness shown at iig. 7, by cutters, Figures 4 and 5, suitablyr mounted in a lever, or other press, like those used among manufacturing-j ewellers.

Any preferred form, which fancy may suggest, can he given to the ends a a', to vary the expression of the frame when made up.

Through each blank, a mortise, b, is cut, whose width is that ofthe thickness of the blank, and Whose length is equal to the width ofthe blank, except at that part of the latter where the projecting shoulder, c, is located.

The purpose of this shoulder is to prevent a blank, when its endal is inserted in the mortise'b, as seen in the several figs. 1', 2, 3, from being drawn through such mortise, by reason of the obstruction which it presents, and it should be located upon one edge at a distance equal to the thickness of a blank from the end of the mortise, as seen at iig. 6.

The particular improvement, which is the subject of this patent, consists in forming, upon the upper edge of each blank, the shoulder c. The location of the shoulder at this' point is material, as it not only en- After a suoient number of blanks have been prepared, all that is required to complete the frame is, to lock them together.

The blanks are put together by inserting one into the mortise of the other, until it is stopped by its shoulder. A third blank is, in like manner, inserted into the mortise of the second, a fourth into the mortise of the third, and so on indefinitely.

The chain so formed can readily be bent into a circular, or oval form from the flexibility of its joints, permitted by the fact that the shoulder c is upon the outer edge only, and the blanks at the respective ends be locked to form an endless chain by paring oi the shoulder of one of them, andinserting 'that end in the mortise already in the other. A pin can then be substituted for the shoulder so removed, to prevent interlocking.

A back-board, of proper shap'e, can then be Wired, or otherwise secured to the frame, to hold a picture and any glass plate covering the same.

I am aware that picture-frames have long been made composed of blanks having shoulders raised upon their at surfaces, and interlocked by means of slots, similar to those herein described. I therefore do not broadly claim a frame so constructed, as my invention relates to the peculiar construction of the blank alone; but

I do claim as new, and desire to secure by Letters Patent- The pictureqrame blank A, with the slot b, and edge shoulder c, arranged relatively to each other, as herein described.

DANIEL W. MARSHALL.

Witnesses:

CHARLES W. GREENE, J oHN D. THURsroN.

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