US932224A - Saw-clamp. - Google Patents

Description

H. MQ Woon.

SAW CLAMP. y APPLICATION FILIED JAN.31, 1907.

PatentedfAug. 24, 1909i UNITED s'TATEs PATENT oEiEioE.l

HARVEY M. WOD, 0F LGS ANGELES, CALIFORNIA.

SAW-CLAMP.

Specification of Letters Patent.

l Patented Aug. 24, 1909.

Application led January 31, 1907. Serial No. 354,982.

To all whom it may concern:

,Be it known that l, IIARVEY M. Woon, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a nenT and useful Saw-Clamp, ofw'hich the following is a s ecification.

his invention relates to improvements in clamps for holding saw blades while the same are being sharpened.

Qbjects of the invention are: to provide a 'saw-clamp having a com aratively thin and light loose jaw that willj conform itself most fully to saw blades 0f different cross` sectional shapes; to provide van improved collapsible saw-clamp of the kind thatv can be folded intoa4 compact form for storage in carpenters. chests or elsewhere; to provide a collapsible saw-clamp of the character stated, that is light,.strong, cheap to manufacture, easy to apply td and remove from the'support therefor, easy to assemble and disassemle, and easy to glamp and unclamp; to provide the clamp with spurs adapted to catch in a support when in use, and to be covered so as not to catch on anything when the clamp is folded; and to provide improved means for holding the parts tight and firmly together when the clamp is folded.

Further objects are to provide a simple means for moving one jaw truly and evenly toward the other'to tighten the grip'l of the clamp on the saw blade.

The accompanying drawings illustrate the invention:

Figure 1 is a side View of the clamp folded .for`storage or transportation. Fig. 2 is 'aperspective view of the clamp in unfolded or operative position, the jaws being 'shown' open ready to receive a saw blade. Fig`. 3 is a cross section taken o n line :vai-a3 of Fig. 2, showing a saw clamped in the vlse and the mutilated shaft turned part .Way toward Fig. 4 is a fragmental ,view of the saw clamp folded. 7-is a.

fragmentary view of thejaw-engaging 'face v ofthe.rearbracket.

1 designates the front jaw and 2 the jaw. The rear jaw is pivotallyfastened` to the' rear arm-'nA of'each of the U-shaped-jawe connecting members or loops 3 and 4 by means of rivets 5 projecting fromsaid arms into a rear bracket 6. Said bracket v6 is secured to rear Ijaw 2 by any suitable means as by screws 7. The members Sand 4 con stitute means carrying and looselyconnectf ing the jaws so that the jaws are readily adjustable toward and from each other.

The front arms l) of loops 3v and 4 pivotally engage studs 8 projecting forwardly from a front bracket 9 fastened to the front jaw 1 b screws 10. Bracket 9 is extended upward y at each end thereof to form bearings 11- in which is mounted -amutilated cylindrical shaft 12. .Said shaft 12 is cut away` or recessed about half way through as at 13 to receive each arm l).

By providing a shiftable handle 14 the vise is adapted for ready and convenient use without obstruction caused by the handle,

das the same may drop down out ofthe Way as indicated in Figs. 2 v.and 5 whenever the shaft is properly. turned for that urpos'e either in its clamping or its unc amping position. In Fig. 3 the handleis 4s0 turned as to be in the way, but since the jan/engaging means is inthe form of a mutilated c lindrical shaft it is free to turn so that the andle 14Inay Abe swung on upward from theposition shown in Fig. 3 to vertical position where it will dro down tothe positlon shown-in Fig. 2,

- an such rotation of the shaft -12-does not further move the jaw.

14 desi natesa finger lever'or handle. for

jrotatings aft v12 mounted tosli'de fromend' to end through a hole 15, said lever being -upset or bent at'14 at eachl end to prevent its complete Withdrawal from theshaft'.

; By reason of arms b being slidable on studs 8, jaw 1 may be moved outwardly whenithe recesses 13 of shaft 12 are turned outward, said jaw being forced inwardly closing the clamp when the solid portion of shaft 12 is turned outward to engagejthe arms b.. For the. urpose of mountingv theclamp on a bene or other support, a bent foldable spur `16-is pivoted-at each end of the rear 'aw 2, the rear bracket'being'provide stop .portion to arrest said spurs-w nswung wardlyto a horizontal pof "spurs am in horizontal position, the .pointsthereof extend downf i driven into l a theselemp 111 Online ward 'and may' wodeaspportto hol ll lllll tive position. When the clamp is to be folded, spurs 16 are turned down to bring the pointed portions thereof safely out of the way under the lower edge of the jaws. Loops 3 and 4 are then swung astride the jaws of the clamp asindicated in solid lines, in Fig. 1 and in dotted lines in Fig. 4. When in this position, said loops keep the jaws closely together and hold spurs 16 snugly against the rear jaw where they are out of 19 of the shaft outward to act as a cam against the `arms b thereby to cause a relative movement between the arms b and jaw 1 to 'clamp the latter against the saw blade.

j The tendency of arms a, t is to springr together as indicated by the short arrows in Figs. 2 and 3.

2U designatesv adjusting screws near the bends of the jaw, supporting loops 3, and 4. Said screws extend loosely through arms b and have a screw threaded engagement with arms a. so that by turning said screws the opening between the free ends of the loops may be widened or narrowed. The loops are preferably provided along their entire length with outwardly extending flanges 21, best'shown in F ig. 2, to strengthen the same.

In order that the metallic brackets of the clamp may 4be conveniently cast or drop forge-d and readily asseinbled,-tlie bearings or retainer 11 for shaft 12 are preferably formed as semicircular, rearwardly opening ears as clearly shown in Fig. 2. In these ears the shaft 26 which is straight upon one side and provided with notches or mutilalions 13 on the other side, is mounted so as to 'bear directly against the front lace of the frontjaw. Supporting loops 3, ll which constitute combined jaw-connectors and spurcovers are arranged to embrace the jaws and to extend into the notches or mutilations 13 of the shaft when the shaft is in one position with a portion of its straight side in. engagement with the front jaw and so that when tl Le shaft is partially rotated and unnotched part thereof will engage the connector or loo p and thereby operate to force the away from the limb ofthe loop thus engaged and toward the other jaw, but during the operation some portion of the straight side of the shaft will engage directly fromv end to end ol' the shaft against the front jaw so that the front aw is forced toward the other jaw by pressure applied evenly to the front/ja'wlfor a considerl a i e distancev therealoiig, tire length of the shaft. y

A similar construction fofbracket, best shown at lain'lfig. 4, isf/desirably used for stopping the spurs 16. provided with a groove 22 to form a bearing for the shank portions said spurs, each of which is provided witlfif a shoulder 23-in a cavity 24 to retain the spurs in said grooves.

It is to be understood that I do not limit -1i ainely, the endescribed, but that any hhanges made within the scope of the appended claims be within the limits of this invention. In the present embodiment of .the invention jaws land 2 are made ol' wood, but any suitable material may be used.

The mutilated shaft has one side straight and intact from 'end to end except that it is reduced at each end to form the gudgeons or pivots 25 which are held in the ears 11, and

portions 26, 27, of the shaft are cylindrical sov that in all positions of the shaft its peripheral surface'engages the front aw. By means of the mutilated shaft and the slidable pivot studs, force is evenly and directly vapplied to the movable jaw to gras the saw-blade tightly all along the face of t e saw in contact with the aw.

What claim is 1. A saw vise comprising a 'j aw, U-shapedi members, pivots pivoting one arm'of each member, another jaw slidably' connected byl means of pivots with the other arms of said members, such last mentioned pivots, and a mutilated shaft carried by the lastnamed jaw and arranged with its mutilations in position to receive the last-named arms of said members when in one position, Vand means to rotate said shaft to bring the unmutilated portion thereof against said arms to move the jaw relative to said. arms 5 said members being adapted to fold along said jaws into position parallel therewith and with said mutilated. shaft.

2. A saw-vise comprising a jaw, pivots mounted in the jaw, U-shaped members connected to the pivots, a second jaw parallel with the first jaw, pivots mounted in the second jaw and slidingly mounted in the U-shaped members; a shaftv carried by the second j aw andv having cut-away portions in alinement with the ends of the U-shaped members so that as the shaft is rotated one way the second j aw is moved toward the first and vice versa, said U-shaped members being adapted to fold longitudinally of the jaws; and a handle slidingly mounted through the shaft in a plane parallel Vwith the cutaway portions ol the shaft.

25. 'l`wo jaws, a mutilated shaft straight on one side and notched on theopposite side, journaled on one of 'the jaws, means to turn said shaft and means carryingand loosely The rear bracket 6 is v 'myself to the precise construction shown and connecting the jaws and arranged in the mutilations of the shaft to be engaged by the straight portion of the shaft at a portion of itsrotation to move one of said jaws toward the otheiz v4. A saw vise providek with jaws, a foldable supporting spur, clamping means and a member having substantially parallel limbs connecting said jaws and adapted to be moved into one position to cover the spur when folded, and lnto another position to be eligaged byj the clamping means.

5. A saw vise providedA with jaws and with a foldable'spur, U-shaped connecting means ivoted to the jaws ofthe vise and adaptedvto engage the spur andthe jaws to press the parts together when the connecting means are folded on the jaws.

6. A saw' clamp provided with a foldable supporting spur`on one of its jaws andwith combined'foldable jaw connections and spur holders connecting its jaws and comprising a member having substantially parallel limbs adapted to fold on said spurs when the same are folded.

7. A saw clamp provided with four stops on one of its jaws, two spurs pivoted on sa1d jaw to fold thereon andl to engage two of said stops when unfolded, loop members conneeting the jaws andv adapted to fold over the ends 'of said jaws, and to engage said spurs and the other two of said stops when t e clamp is folded.

8. In a sawclamp, a rear jaw7 pivots in the rear jaw, supporting means having parallel arms, the rear ones of said arms being eonnected'to the pivots, a front jaw slidingly connected to the other arms, shaft bearings in front of the' front jaw, a shaft in the shaft-bearings, means on the shaft whereby the front jaw is moved back and forth, and a handle for operating the shaftz',

9. A vise comprlsing front and ifar jaws, the former being provided with two forwardly-projecting studs, two loops, each of said loops being fastened to the rear jaw and movably mounted on the front studs, and cam means between said loops and the front face of the front jaw to engage said j aw and a limb of said loop, and means to partially rotate said cam means.

In testimony whereof,l I have hereunto set my hand at Los Angeles California this 31st day of October 1906.

l H. M. WOOD. In presence of l JAMES R. ToWNsEND, M. BEULAH TowNsEND.

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