US952013A - Vise for saws. - Google Patents

Description

J. MIGNOLA, JR.

VISE POR SAWS.

APPLmumH Hun our. 27, 190s.

552,01 3, Patented Mar. 15, 1910.

IN VEN TOR /M fw# WITNESSE s ATIURNEY JOHN MIGNOLA, JR., OF ALAMEDA, CALIFORNIA VISE FOB. SNS.

Application filed October 27. 1533.

'[07:51 erft-jm it. may concern:

Specication of Letters Patent.

Patented Mar. 15, 1910.

Serial No. 524.955.

Be it known that l, Joux Miexom, Jr., l

a citizen of the Unied States, residing at l Alameda, m the county of Alameda andg State of Californiafhave invented new and useful Improvements in Vises for Saws, of g which the fellowing is a speeitieation.

lhe olneet of the present invention isto provide an improved vise for holding saws. .ir as Prior rises used for this purpose, so

mj. knowledge extends. have heen defective 5,

in that they do not hold the saw with equal firmness and pressure throughout its en-l tire length, rendering it ditlieult and lahorij eus to sharpen a saw held in such a vise.z

The present vise is so constructed as to avoid the, ahove defect. a.,

in the aeeonipanying drawing. Figure l is a plan view of the saw; Fig. '2 is a longitudinal section thereof in the open position; Fig. l is a similar View in the elosedposition.

Referring to the drawing'. l yindicates the base ot the vise, which is formed with Screw holes Q for securing it to a work henelr or tahle. Said base is, at one end, greatly widened, as shown at Q 2, and tapers in thickness almost to a sharp edge. forming a stationary jaw,

ing upward from the base. said hase and extending forwardly said stationary ja are two arms 3 between which is pivoted, as shown at 4, a lever Rising from on tht`l front end of which formed a inovtoward said stationary ]aw slop-1 ahle jaw G. said movahle jaw heine similar in general forni to the stationa sloping downward trout said lever.

tween the comparatively thin and long lips i i little use. 1t i rarely the ease that the saw is e? said stationary and n'iovahle jaws tht.l saw is clamped,

ln order to depress the lip ol the inovahlc statifniary gan', ther` is pivoted on the rear end of the jaw lever 5, as shown at S. a volte lever it. the central nzeniher l() of which forms :i linger piet:e..the sides: 11 of which volte extend on opposite. i sides of the lever and are enlarged at the i ends to torni eeeentries or cams around the i (zonnet-tion S of the volte lever` with pivotal M'hen the yoke is moved from rearwardly Vthrough i of the movable jaw from that of the stutionaryY jaw when the volte is returned to its forward position, there is provided a coiled spring 13 around a rod 1i paring through the rear end of the lever, 5, .id spring 13 hearing upon the top of the lever lv ani aware that there has; long been used a vise for 's similar to that ahove deserihed that in every respeet except l'or the addition ofthe spring. and for the faut that. inftead of using :i yoke pivotally muriel-ted at the rear ind of the lever. there is used tiiez'er-:it'h an operating lever han ing a single. point ot eugagenaeut with the iuovahle jaw lever beneath the rear end of the latter. Although thi.` d viee has helen ou the mariiet for many rs, l. have {onu-.l it, unless quite new, to be pruetieally .wrthless for the purpose desired. 'the reason is that, with that consti-tation, it' there i` the slightest loowness of the herir-ing;` tor the pivet of the aimable -lav.' lever, then sinee, the 011erating,r .lever presses the rear end of the mov- :.i e jaw lever upward at. a in fle point only, and that snhftantiall't' on tl-e central longitudinal line of the latter le if, owing il) iltf.' lywtltt (il. lllt lr tlll! i'. tite 'Quint 0f contact or pressure i-v `lijg'htiy to om! side of :nid central line. whieh is vtry liable to happen owing to the great distanee ot' ihis point front the hearings of said mvahle jaw lever, then the pre-.suse lay the et ating lever, heilig at one. side ot' the ventral vertieal plane between the hearings of the nrn'zzlile jaw' lever. tends to tiit the sana' to one side, so that the pre--'n;e i eonsiderahly greater hetyzeen theY lips ot` the jaws a1 one end of the vise than at the other. In fart, after a f heldiirnily exeept at one end of the vise.

)ly pre-ent invention remedies this` defect h v providing,r that the upward pressure upon the relu' end of the movable jaw lever applied equally at hoth sides of saiai latter lever. so that there can never he any tendeney whatever of said lever to twist, or to produce a greater the vise than at the other.

l claim z- 1. vi-e for saws eoniprising a base widened at the end to forni a stationary jaw, arms extending upwardly. and forwardly from said hase.. a inorahl-l jaw, a lever therefor piroted liz-tween the forward end of .said arias. and a volw-.shaped #um lever. the .sides of which extend on opposite sides of the rear pressure at one end of arms extending upwardly and forwardly end of the jaw lever, and are pivolied to Sad lever, Said sides belnfy formed with eaznshaped ends arranged to llear upon said base E to raise said ja v lever by the pivoted movel mem of said yoke lever, substz.nLnll}- as described. l

2. A vise for saws comprising .a base widened a! the end to form a stationary jaw,

from said base, a movable jaw, a lever therefor pvoed between the forward end of said ji, arms, and a yoke-shapedeam lever, the sides of which extend on opposite sides of the rear i end of the jaw lever, and are pvoled to said jaw lever, said sides being formed with earn- .shaped ends arranged o bear upon Saul base to rane. szud )aw lever by the pivotal movement of said `yoke lever, and a Spring for i normally depressing the rear end ot Said )aw lever, substantially as desermed.

la testimony whereof I have hereunto .set

i m23' hand in the presence of two subscribing witnesses.

Jens MIGXQL, JR. llltnesses:

Fmxczs M. Ynienr, D. B. Rcsmlms.

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