US81782A - Improvement in mitre-boxes - Google Patents

Description

WILLIAM` H. HERBERT, OF BLISSFIELD, MICHIGAN.

, Letters Patent No. 81,782, dated September 1, 1868.

IMPROVEMENT IN MITREv-BOXES.

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TO WHOM IT MAY CONCERN:

Be it known that I, WILLIAM H. HERBERT, oi' Blissfield, in the county of Lenawee, and State of Michigan, have invented a new and useful Improvement in Mitre-Boxes for cutting mitres and bevels at the same time; and I do declare that thefollowing is a true and accurate description thereof, reference being had to the accompanying drawings, and to the letters ofV reference marked thereon, and being a part of this specification,

. rIhe nature of this invention is so to construct an adjustable mitre-box* that it can readily be adapted to any desired angle, and so arranged that two different mitres, or a bevel and mitre,'can be cut-at the same time.-

In thedrawin'gs hereto attachedpA represents the top of a. bench, surmounted by a saw-bench or guide, B. C is a frame, attached to graduated quadrant D, and pivoted, at E, to the bench A. Y F is a slot in said quadrant, within which, screwing rinto the bench A, is the-sct-screw G, for the purpose of holding the quadrant in any desired position, andH is a stationary index, directly in line with the pivot at E, and the centre of the guide B.

The frameC is provided with ears, I, at each end, through which passes the rod J, to which are rigidly attached the guards K, and the quadrant L, which is also slotted, and held in desired position by setscrew M passing through the slot into the end'of the frame C. N are saw-guides, held in position by means ofthe flanges, O, on the guards K, and are rendered adjustable to the saw by means of the set-screws P, said guards and quadrant, and their attachments,.al1 oscillating with the rod J. R is an oscillating wooden bar, flat upon its 4upper side, and circular inform upon its under side, held in position by proper journals, which operate in proper grooves, S, inthe guards K, and is designed to always have its upper face horizontal and parallel with the top of the saw-bench B, for the eud'of the p ece of wood or other material being operated upon to rest upon, and to presenta surface of wood to the action of the saw,after it has done its work, and prevent it from becoming dulled by cominginto contact with the metal parts of the apparatus. The operation of the whole is so simple ,u

and readily seen that it needs no explanation.

What I claim as my invention, and desire to secure by Letters Patent, is

` 1. The oscillating` bar R, when constructed and operating substantially as and `for the purposves herein set forth. l

2. An adjustable mitrebox, consisting of the two quadrants D-and L, frame C, Vset-screws G, M, and P, the rod J, guards K, saw-guides N, and oscillating bar R, when arranged and operating substantially asherein described.

' WM. II. HERBERT. Witnesses: A

H. E. Esame,

LOUIS C. HYDE.

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