US744677A - Miter-box. - Google Patents

Description

No. 744.67m; P ATENVTEDRNOV. 17, 1903.

' R. B. BRIGGS.

MITER B0X.' 'APPLIoATloN rundum. 2a. 190:1. Y A No mmm 2 smm'swanni'd,

INVENTOR:

NirED STATES 'y Patented November 17, 1903.

'PATENT OFFICE.

RICHMOND B. BRIGGS, OF' NORTH ADAMS, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO LEROY IV. GODFREY, OF NORTH ADAMS, MASSACHUSETTS.

Mlrl-:R-Box.

SPECIFICATION forming part of Letters Patent No. 744,677, dated November 17, 1903.

Annlication filed March 28,1903.

To all tuk/0717, it Wtmz/ concern: i

Be it known that I, RICHMOND B. Beides, a citizen of the United States, residing at North Adams, in the county of Berkshire and State of Massachusetts, haveinvented new and useful Improvements in Miter-Boxes, of which the following is a specification.

My invention relates to miter-boxes; and the object of the same is to construct a device of this character which shall be simple in construction and efcient in operation.

The novel construction employed by me in carrying out my invention is fully described and claimed in this specification, and illustrated in the accompanying drawings, forming a part thereof, in which- Figure 1 is a perspective of my miter-box. Fig. 2 is a vertical section taken longitudinally of the arms. Fig. 3 is a bottom plan of the same. Fig. 4 is a detail of one of the standards. Fig. 5 is a detail of the latch mechanism.

Like numerals of reference designate like parts in the different views of the drawings.

The numeral 1 designates the table of my. miter-box, which is supported on four legs 2 and has a back 3 cut away at 4to permit the passage of a saw. The top la of the table is made of wood to obviate injuring the saw. A bracket-arm 5 is formed on the back of the table and located just below the opening 4 to serve to support a member 6, pivoted thereto on a vertical 'spindle 7, formed on a collar 8,

.keyed on the member 6. y The member 6 has a short arm 9 and an oppositely-extending longer arm 10. An apertured head 1l is se. cured to the end of the arm 9, and loosely mounted in this head is a standard 12, normally clamped by a set-screw 13. The standard 12 is traversed through the greater portion of its length by a guide-slot 14, and a slotted stem 15 is loosely mounted in said standard and bears an apertured head ,16,- having a guide-aperture 17 therein to serve as a guide for the back of a jointers saw. The arm 10 is made hollow to accommodate an extension'member 10a, which is held against rotation by set-screw 10b, which engages a longitudinal groovelOC therein. A head 11 ,Serial No. 150.555. (No modali:

supports like parts. To yieldingly secure the stems 15 against rotation, a clamp is provided, which comprises a slotted bar 18, bearing a toe 18a, rounded out at 18b to adapt itA to en- 55 gage the stem 15, and a set-screw 19, which engages the slot 18C.

Mounted onv the under side of the table 1 is a semicircular member 20, which has a series of notches 21 formed therein corresponding 6o tothe common or usual miters-thirty degrees, forty-live degrees, sixty degrees, ninety degrees, &c. The number and positions of the notches 21 may be varied at pleasure,`to correspond to any miter desired. 'lhe arc 65 may also be graduated to degrees. To set the arms 9 and 10 to correspond to the notches 21 and to secure it against accidental displacement, a latchl is provided which comprises a stilspring .latch-lever 22 7o and a collar 23, carried `thereby and embracing the arm 10. The latch 22 is secured at one end by a set-screw 24, seated in an aperture in the collar 8, and the collar 23 basan elongated aperture 25 therein to permit a verv7 5 tical movement thereof, the sides 25a of the aperture being made plane to tit snugly the sides'of the arm 10 to prevent any horizontal movement of the arm 10 independent of the collar. `A catch 26 in the form of a square 8ol lug is'formed on the collar 23, and serves to engage any one of the notches 21. A bar 27 connects the two front legs 2 of the table 1 to serve as a guide-bar for the arm 10 and as a purchase for the hand in operating the i latch 22.

In theoperation of setting the device the latch-bar 22 is forced down to disengage the catch 25 fromv the notch 21, engaged by it,

after which the -arm l0 may be swung around 9o until the catch 25 is opposite the notch 21 corresponding to the desired miter, when it is released. The work is then placed on the table and the saw inserted in the guide-slots 15a in the stems 15.

I do not wish to be limited asl todetails of construction, as these may be modified in many particulars without departing from the spirit of my invention.

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

l. In a miter-box, the combination of a table, a semicircle mounted on the under side ot' said table and having notches formed therein corresponding to diierent miters, a member pivoted to said table and having oppositely-extending arms, vertical standards mounted on said arms and having guidegrooves therein for the saw, a stiff-spring latch-lever mounted on said member and carrying an elongated collar loosely tting around said member and provided with a catch located to engage any one of said notches, substantially as described.

2. In a miter-box, the combination with a table for supporting the Work, of an arm pivoted to said table, an are provided with notches, a latch-lever attached at one end to said arm, and a collar carried by said latch and loosely tting said arm, said collar being provided with a catch located to be brought into engagement with anyone of said notches, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

RICHMOND B. BRIGGS.

Images