US544092A - Miter-box - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

A. D. GOODELL. MITER BOX.

No. 544,092. Patented Aug. 6, 1895 fl J D} "WA 1255555. l17 \/E1 tur.

(No Model.) 2 SheetsSheet 2. A. D. GOODELL.

MITER BOX.

5 5 Patented Aug. 6, 1895'.

J WI' LT E 5555 I'IZVE'TL'IZEII'.

flM JSTWJC,

.UNITED STATES PATENT OFFICE.

ALBERT D. GOODE-LL, OF SHELBURNE FALLS, ASSIGN OR TO THE LANGDON MITER BOX COMPANY, OF MILLERS FALLS, MASSACHUSETTS.

MlTER-BOX.

SPECIFICATION forming part of Letters Patent No. 544,092, dated August 6, 1895. Application filed April 10, 1895- Serial No. 545,158, (No model.)

To aZZ whom it may concern: lower edge, into which the thumb lever F en- Be it known that I, ALBERT D. GOODELL, a gages for retaining the swing-bar and sawcitizen of the United States, residing at Shelguides at the principal adjustment positions,

burne Falls, in the county of Franklin and as for sawing miter, octagon, and square an- 5 5 State of Massachusetts, have invented new gles.

and useful Improvements in Miter-Boxes, of G indicates a gib or rest, comprising a which the following, together with the accoinstraight bar grooved in its top and bottom panying drawings, is a specification suffisurfaces and extending radially from thecirciently full, clear, and exact to enable persons clear to the circle A and resting thereon, and 6o 1o skilled in the art to which this invention appreferably havinga point or index e, that lays pertains to make and use the same. over the graduated scale o for denoting the The objects of my present invention are to degree of angular adjustment. This gib is render the miter-box more efficient and conarranged upon the top of a longitudinal upvenient for service, to provide means for autoward projection or fin D fixed upon a swing 65 matically supporting the saw-guides and saw bar D, which fin enters the under groove (see in-elevated positionwhen lifted and for readily Fig. 4) and serves to retain said gibin proper releasing the same by simple and easy action, lateral relation while allowing it up and down to afiord means whereby the adjustmentlooseness. A rod or bolt h, threaded into or looking devices or thumb-latch may be oper-. attached to the gib, extends down through a 70 2o ated by the saw-hand without releasing the lover or block H at the under side of the grip on the saw-handle, to afford a convenswing-bar, and a screw H, having a handle for ientlyadjustable stop for regulating the turning the same, is provided for forcing depth of kerf as desired, and to perfect and down the block H and clamping the gib G improve the structure in its various parts and and swing-bar to the circles firmly at any 7 5 actions, as more fully hereinafter explained, position of adjustment when it is desired to the particular subject-matter claimed being have the saw-guides fixed at position. The definitely specified in the summary. manner of arranging the gib in connection In the drawings, Figure 1 is a front view, with its clamping-screw and lever and the and Fig. 2 a plan view, of a miter-box, embracgraduated scale and indicating-point on the 80 o ing the features of my invention. Fig. 3 is a end of the gib are features of my invention, vertical sectional View showing the swingthe object of which mechanism is to adjust bar, adjusting and saw-guiding devices, and the angle to anyintermediate degree between means for supportingthe saw-guides elevated. the points at which the latch mechanism en- Figs. 4. and 5 are transverse sections of the gages. 7 85 sWing-bar aud grooved gib or rest. Fig. 6 is Another feature of my invention consists a vertical section of one of the saw-guides, in providing means for automatically retainits support, and adjusting devices. Figs. 7, ing the saw elevated by simply raising it to 7, and 8 show the detail of the automatic its highest position. For this purpose there elevating and stop devices, and Fig. 9 is a is combined with the saw-guiding posts E 90 0 section of the saw and stud thereon. swinging catch plates or bars I, that engage Referring to parts, A denotes the horizonwith lugs or studs J, fixed on the sides of the tal frame or bed, and B the upright back for sockets D, which catches automatically drop supporting the work; 0, the center-bolt or into engagement when raised. These catches axis, and D the swing-bar, having thereon are best made as angle-levers pivoted to the the cylindrical sockets D, carrying the uphead of the saw-guides at i, with their arms right vertically-movablesaw-guidesE in usual I connected one with the other by a bar 1 manner. The bed is provided with a front which serves as a handle for simultaneously circular are A and a smallerarc a, each con- 7 disengaging both catches by simply raising centric with the axisG. The front circle has said lifter-bar 1 which swings the catches we a graduated scale a of degrees and parts of ofi from their engaging studs or notches at J. degrees upon its top and notches d d in its The plates I are longitudinally slotted at J and the screw or stud J passes through said slot. The lower end of the slot is offset and a lug m formed at one side thereof, so that when the saw-guides E and plates I are elevated by lifting the saw the lug m is antomatically carried over the stud J and retains the parts elevated, as indicated by dotted lines, Fig. 3, until the end of the catchplates are released from the studs J, which is done by simplylifting the bar or link 1 until it takes the weight of the saw and guides, and thereby lowering the saw upon the work.

The catch is best formed by offsetting the slot at the lower end of the latch-bar; but in some instances, if preferred, it might be a notch or lug and the outer edges of the latchbar to engage suitable lugs or notches on the socket for retaining the saw elevated, as indicated by dotted lines at 071 Fig. 7.

In connection with the catches I arrange stops, which can be adjusted to any position for stopping the downward movement of the saw. K K indicates these stop-studs, arranged upon the boss or plates I, preferably with a screw-threaded shank passing through the slot J in the plate and provided with a thumbnut on the outer side thereof, (see Fig. 8,) said stop-studs being adjustable up and down the slot above the end or shoulder of the saw-guide socket D and to be fixed at any desired position of adjustment for stopping the downward movement of the saw-guides and saw at a given distance above the bed to facilitate sawing tenons or work in which it is desired thatthe saw-kerf should not pass completely through the stock. These stops K can be fixed at the upper ends of the slots when the saw is to completely out 06 the stock. These adjusting-stops can be arranged in the slots of the catch-bars, or a separate slide-bar can be attached to the guide-post for carrying the studs K. The preferable method is that shown.

The thumb-latch or lever F for engaging the notched circle and holding the swingframe D with its saw-guides at the regular miter angles-square, hexagon, octagon, &c. is, in accordance with my invention, provided with an upwardly-extending arm F, located in front of the saw-guide at one side of the slot and adjacent to the side of the saw S, which latter I provide,at or near its handle S, with a shoulder, lug, or stud t, that is adapted to engage or make contact with said arm F for operating the latch F to release the swing-bar D when the saw is run forward or at extreme advanced position. Thereby the operator can, while holding the saw, by tilting the saw, unlatch and adjust the swing-frame without releasing the Work in his other hand. This permits the convenient shifting of the angle from right to left while holding the piece of molding or stock on the bed.

For adjusting the position of the saw-guiding posts as the saw is worn narrower by filing I arrange a screw it at the bottom of the socket, the body of said screw being threaded into the bar D parallel with the axis of the socket, and its flange or head 41' extends beneath the socket-opening, so that the foot of the saw-guide E strikes thereon when in depressed position. (See Fig. 6.) Adjustment is effected by turning the screw in or out, as required.

P P indicate auxiliary guides, each com prising a slotted plate with a dependent end that can be adjusted over the bed for supporting the work away from the back B when more acute angles are desired than the radial adjustment of the swing-bar affords. The guide P is mounted on a bracket or support R at the top and rear of the back plate B and is held at adjusted position by a thumbscrew Q. For use the guides can be set over the bed, as shown at the left in Fig. 2, and when not in use turned back out of the way, as shown at the right on Fig. 2.

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

1. In a miter-box mechanism, the combina tion, with the bed-frame having the larger and smaller concentric circular arcs, and the swing-bar carrying saw-guides and pivotally connected with said frame; of the grooved gib or rest its ends respectively supported upon said circular arcs, its under groove embracing the top of an upwardly projecting fin fixed on said swing-bar, the lever-block beneath said bar, clamp-bolts connecting said lock and grooved gib, and the hand-screw for depressing said lever-block and binding the parts upon said arcs, for the purpose set forth.

2. In a miter-box mechanism, the combination, of the bed-frame having its circular are provided with a graduated face-plate thereon, the swing-bar pivoted to said frame and carrying the saw-guides, the grooved gib mounted upon an upwardly projecting portion of said swing-bar, radial to said are, the index point on the end of said gib, and means substantially as described for clamping said gib and swing-bar upon the are for retaining their adjustment at any position, as set forth.

3. The combination, with the vertically movable saw'guides, and their supporting sockets, of catch-bars or plates pivotally connected with the heads of said saw-guides, and engaging lugs and notches, respectively disposed on said catch-bars and sockets, that engage for sustaining said saw-guides elevated, said catch-bars adapted to swing said lugs and notches into engagement, automatically, when the saw is lifted from the work and said saw-guides raised to high position, substantially as set forth.

4. The combination with the vertically movable saw-guides and their supporting sockets, of the angle-lever catch-bars pivoted to the saw-guides and having notches or lugs at their lower ends, the-studs for engaging therewith fixed on the sockets, and the liftin g-bar pivotally connected with the inwardly upon said catch-bars for contact with the shoulder of the sockets, for the purpose set forth.

6. The combination with the bed-frame, its

notched circular arc, and the swing-frame carrying the saw-guides, of the thumb-latch pivoted within the swing-frame, its rear end engaging with the notch in said circular arc; said thumb-latch having its forward arm extended upward in front of the saw-guidesocket adjacent to the side of the saw, and a saw having a projecting stud at its handled end adapted for contact with said thumblatch, for the purpose set forth.

Witness my hand this 6th day of April, A.

ALBERT D. GOODELL. Witnesses:

HENRY '1. WILcoX, A. K. HAWKS.

Images