US154493A

US154493A - Improvement in mitering-machines

Info

Publication number: US154493A
Authority: US
Publication date: 1874-08-25
Anticipated expiration: 1891-08-25

Description

IINITED STATES PATENT OFFICE.

TEEonoEE E. KING, CE EoCKvILLE, CONNECTICUT.

IMPROVEMENT IN MITERING-MACHINES.

Specification forming part of Letters Patent NoL 154,493, dated August 25, 1874; application led October 6, 1873.

To all whom it may concern:

Beit knownV that I, THEoDoRE E. KING, of Rockville, in the county of Tolland and State of Connecticut, have invented certain new and usefullmprovements in Mitering-Machines, of which the following is a specification, reference being had to the accompanying drawings, in which` Figure 1 is a-top view of a machine embodying my said improvements. Fig. 2 is a side elevation of the same-from the side A. Fig. 3 is an end elevation of thesame from the end B, with the legs of the machinemleft of. The nature of my invention consists-in the combination and arrangement, in a miter-machine, ofthe devices employed, as will be herev` inafter more fully set forth.

The letter a indicates the table of the machine, and al the raised ange at one side, against which the piece of Wood, to be mitered is rested The grooves a2, running across the table and through the iiange al, are sawgrooves, at different angles. The swingframe which guides the saw is composed of the pivot-rod b, swinging on the pivot-pin b1 under the table, the duplicate uprights c c' at each end ^of 'the pivot-rod, the gage-button rods d d1, connecting the tops of the uprights, and the Vgage-buttons ce c1 c1 on the rods d d. Underneath the table isxed the index-plate f, having notches f', corresponding to the different saw-grooves a2, and the pivot-rod b carries a right-angled index-iinger, b2, with a knife-edge, which sets downinto the indexnotches f' and holds the swingframe locked in that position. Thewhole weight of the swing-frame rests, by means ofthe index-1inger b2, upon the index-plate f, so that when the index-linger is swung over' one of the notches f', the weight of the frame Causes the index-finger to settle firmly in the notch. The tops of the uprights c c are made adjustable toward and from each other, to accommodate saw blades of dii'erent thicknesses, as Ifollows: The outer `ends of the pivot-rod `b are made slightly wedge-shaped, thinnest at the bottom, and the nut and bolt g g fasten thetwo uprights to each end of the pivot-rod. `By screwing up the nut gtightly, the tops of the uprights are moved away from the rods, and also rotarily, for saw-blades of diierent thicknesses, and are secured in position by the screws e2. These buttons are opposed t0 each other in pairs, and to be so adjusted that their faces are parallel and perpendicular, so as to hold the saw from side motion, and to hold it vertically. A saw with l"i2t..strengthening-rib at the back is usually' usedormitering, and the uprights c c are so adjusted inf-height that this rib rests on the top of the gage-buttons when a miter has been completed, thus preventing the saw from cutting into the table. The uprights c cvare open through their longitudinal ceriters, as shown in Fig. 3, through which openings run the bolts Vg i', and these openings in the uprights are for the purpose of permitting the vertical adjustment of the uprights and the gage-button rods, and, consequently, of the gage-buttons. On the ange al slides a gage for the end of the piece to be mitered, composed of the body-piece Z, the two legs m n, united at the top, the bolt o, running through the two legs, and the thumbnut s, which, being screwed up, causes the body-piece l and the leg n so to embrace the flange al as to hold the gage securely in place. One end of the body-piece is squared ofi', so that a square end can be rested against it, and the other is obliqued off at a miter bevel of forty-five degrees, so that a mitered end can be rested against it'and securely held.

I claim as my invention- 1. The combination of the index-plate f, the pivot-pin b1, the pivot-bar b, bearing the index-finger b2, impinging on the index-plate, and also bearing a saw-guiding frame above, all constructed, arranged, and operating substantially as described, and for the purpose set forth. Y

2. The combination of the pivot-bar b,

On the l wedgefshaped at the ends, the uprights, o c" the'legs mvnybolt. o, and thumb-nut s, alleen d, open through the eenper, the bolts nd4 structed',arranged,andoperatingsnbstantially nuts' g g z' i', the rods d d', and the adjust-angle as described. buttons ee, all constructed, arranged Yapnme- Y Y Y A signed for operation and use substantially as THEODORE E KING" shown and described. Y s. e l l v Witnesses:

3. The sliding gage, composed of the body'- WM. E. SIMONDS,

piece l, with one end beveled, as described, l F. G. FULLER.