US723966A - Woodworker's vise. - Google Patents

Description

No. 723,966. PATENTED MAR. 31, 1903. E. WRIGHT.

WOODWOBKERS VISE.

APPLICATION FILED JUNE 27, 1902.

HQ MODEL.

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UNITED STATES PATENT iFFIcE.

EDWARD WRIGHT, 0F WORCESTER, MASSACHUSETTS.

WOODWORKERS VISE.

SPECIFICATION forming part of Letters Patent No. 723,966, dated March 31, 1903.

Application filed 1 7. 1902.

To all whom it may concern.-

Be it known that I, EDWARD WRIGHT, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improved Woodworkers Vise, of which the following, together with the accompanying drawings, is a specification sufficiently full, clear, and exact to enable persons skilled in the art to which this invention appertains to make and use the same.

The object of this invention is to provide a simple, convenient, and efiicient quick-action vise for woodworkers use, also to provide means whereby the vise has a longer movement by a single turnof the operating wheel or handle than is usually attained in Vises of this class, and to render the mechanism not liable to give back or become loose on the work while in use.

To this end my invention consists in a vise the parts of which are constructed and combined for operation as illustrated in the accompanying drawings, wherein-- Figure 1 represents a longitudinal vertical section of my improved vise at line W W of Fig. 2. Fig. 2 is a bottom plan view. Fig. 3 is a front end view, the handle being in part broken out to reveal the plate-notch and lover end. Fig. 4. represents a transverse section through the screw-hub at the rear of the handle-plate. Fig. 5 shows a separate side view of the screw-hub and plate. Fig. 6 represents a transverse section at line Y Y of Fig. 2, and Fig. 7 is a transverse section at lin X X of Fig. 2.

This improved vise comprises a bed-piece 1, having a jaw 2, longitudinal underlipped guideways 3, and a row of coarse transverselydisposed ratchet teeth 5 upon its under surface. It is also provided with screw-holes 4 or other suitable facilities for a taching it to a workbench B. (Indicated by the dotted lines on Fig. 1.) The movable-jaw slide-piece 6, carrying the jaw 7, is arranged to slide longitudinally in the guides 3 for adjusting the jaw 7 toward and from the fixed jaw 2. Within the front end or head of the slide I provide a fixed nut 8 or a thread cut in metal of the slide -head opening, and I arrange therein an externally and internally threaded screw-hub 9, having a handle wheel or plate Serial No. 113,416- (No model.)

10 attached thereto, by means of which the hub can be rotated in the nut-thread. A longitudinal shaft or pull-rod 12 is provided at the under side of the slide 6 and has its fore end 13 loosely threaded into the screw-hub, while upon its rear end there is fixed apawlblock 15, the upper part of which is disposed within a guide slot or opening 16 through the slide-plate and adapted to engage with the ratchet-teeth 5 on the bed-piece. The pawl is rigid on the shaft, and the shaft is nonrotatable. Of the threads on the interior and exterior of the screw-hub 9 one is a left-hand screw-thread and the other is a right-hand screw-thread, 'so that the two threads add their resultant motion when the handle-wheel and screw-hub are rotated. Below the shaft I arrange a tilting lever 18, fulcrumed in a hanger at 19, rigidly fixed on the slide-plate. The front end of said lever is a stiff bar arranged for control by the rotating parts or adapted to swing into and from a recess or notch 20, formed in the peripheral edge of the handleplate 10, while its rear portion preferably consists of or has attached thereto a fiat resilient plate or spring 21, the rear end of which supports the pawl-block and shaft, as best indicated in Figs. 1 and (5. When the front end of the lever 18 enters the notch 20, the tilt of the lever allows the rear end of the pull-shaft and its pawl to drop by gravity and unlock from the ratchet-teeth, (see position shown in Fig. 1;) but when the fore end of the lever is forced out of the notch, as by rotation of the handle-plate 10, then the lever and its spring 21 will lift the pawl into interlocking engagement with the ratchet, so that said pawl will take a firm hold upon the tooth that for the time being is nearest to it for sustaining the strain or draft of the screw threads when closing the vise-jaws, this action being automatic and controlled by simply rotating the screw-hub and its plate. The tension or strength of the spring-plateis made such that it will uphold the pawl, but when the end of the pawl strikes the top of a ratchet-tooth will afford a yielding action sufficient to permit operation of the screw until the pawl is drawn forward to properly seat against the face of the tooth. The fixed nut or slide-head is best furnished with a furcated guide 22 for keeping the lever laterally ISO central in relation to the slide-plate. The end of the lever is properly rounded or formed so that it will be automatically ejected from the notch by the rotative movement of the plate when operating the vise. The plate is provided with a suitable handle 25, hinged to the plate, so as to turn down out of the way.

The operation is as follows: When the lever 18 is in the notch 20, the slide and jaw 7 can be drawn out or pushed inwar at will. The work is placed in the vise and the jaw 7 is placed against it. The handle wheel or plate 10, with thescrew-hub 9, is then rotated. This depresses the fore end of the lever 18 from the notch 20, causing the. spring 21 to lift the pawl into interlocking engagement with the ratchet 5, and the action of the screw-threads then draws the pawl against a ratchet-tooth, which then holds the shaft firm, and further rotation of the operating member draws the jaw 7 against the work. A reverse rotation of the plate and screw-hub 9 releases the grip of the vise, and when the notch coincides in position with the lever 18 the pawl drops by gravity from engagement with the ratchet.

I claim and desire to secure by Letters Patent-= 1. A woodworkers vise, comprising a fixed or bed member, and a movable member slidable thereon, each provided with a jaw integral therewith, a pull-shaft threaded at one end, means for detachably interlocking. the other end of said shaft withsaid fixed member, and an internally and externally threaded operating member rotatably arranged on the threaded end of said shaft, and threaded into a non-rotative thread or nut in the end of the sliding member, in combination with means for putting the shaft-interlock devices into and out of engagement with the bed member.

2. In a vise, in combination, a bed-piece provided with underlipped guides, and having ratchet-teeth on its under side, a slide supported in said guides, said bed-piece and slide each provided with a jaw, a handlewheel having a screw-threaded hub and a peripheral notch, a non-rotatable shaft, one end of which is loosely threaded into said hub, and carrying a pawl at its other end, said pawldisposed in an opening through the slide beneath said ratchet-teeth, and a lever fulcrumed beneath said shaft and having its fore end resting against the peripheral edge of said handle-wheel, the rear arm of said ver having means for upholding said pawl for controlling its relation to the ratchet, substantially as set forth.

3. In a vise, the combination, with the bedpiece having the fixed jaw and under side ratchet, and the movable-jaw slide supported and guided on said bed-piece; of a pull-shaft screw-threaded at one end, its opposite end carrying a pawl engageable with said ratchet, and a rotatable screw-hub internally threaded upon said shaft and externally threaded in a nut or thread fixed in the end of said slide, with right and left hand threads respectively, a tilting lever having a yielding member supporting said pawl, means connected with said screw-hub for controlling said lever to move the pawl to and from said ratchet, and a handle means for rotating said screw-hub.

Witnesses:

CHAS. H. BURLEIGH, F. E. WALDEN.

Witness my hand this th day of June,

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