US514344A - William whitehead - Google Patents

Description

(No Model.)

W.`WHITEHEAD.

PARALLEL VISE.

Patented Feb. 6, 17894,

UNITED STATES ATENE EEicE.

WILLIAM WHITEHEAD, OF MANCHESTER, ASSIGNOR. TO JAMES BASSNETT ATHERTON, OF RAINHILL, ENGLAND.

PARALLEL VISE.

SPECIFICATION forming part of Letters Patent No. 514,344, dated February 6, 1894.

To all whom it may concern:

Be 1 t known that l, WILLIAM WHITEHEAD, electrical engineer, a subject of the Queen of Great Britain, residing at Moss Side, Manchester, in the county of Lancaster, in the Kingdom of England, have invented certain new and useful Improvements in Parallel V1ses,(for which I have received Letters Patent 1n England, No.5,782, dated March 24, 1892,). of which the following is a specification.

This invention relates to improvements in parallel vises, and has for its object to provide means whereby the grip of the jaws is rendered more rapid and secure and the vise 1n itself less liable to get ont of order, being screwless and springless.

In orderthat myinvention maybe more fully understood, I have caused to be appended hereunto one sheet of drawings marked with letters of reference indicatinglike parts in th e various figures.

Figure l is a side view; Fig. 2, a front view, and Fig. 3, a longitudinal section of -a parallel vise constructed in accordance with my invention. Figs. 4 and 5 are cross sections at line A-B in Fig. 3, showing respectively the rack out of and in gear. Fig. 6 is a plan View of a portion ot the vise showing the inchned disks separated. Figs. '7 and 8 are side yiews of the front portion of the vise, showing two modications of my invention.

In carrying out my invention, and referring to Figs. 1, 2, 3, 4, 5 and 6, I employ as usual a stationary and a movable jaw, ct and b respectively. The stationary or back jaw a, I form with a hollow body a open at its base and ends, which body a I fix to a plate c having ratchet teeth c projecting above the base of the hollow body a. Into this hollow body a', I t a hollow shank d adjustable therein having a partition d and closed ends d2. On the outer end of this shank, the front movable jaw b is arranged to slide instead of, as heretofore, being formed in one with the hollow shank d. The hollow shank d, see Fig. 3, is furnished with a stud da projecting into a groove h formedl in the hollow body a of the stationary jaw a, which serves to limit the outward movement 'of the hollow shank d. In each end of the hollow shank d and passing through the same,l mount a spindle e (No model.) Patented in England March 24. 1892, No. 5,782.

adapted to be partially rotated and to carry and operate a rack f, having two lugs f and titled into the hollow shank d. The spindle e is longitudinally kept in position by reduc- 5g ing and furnishing its back end with a washer e rendered fast thereon and a nut e2. The rack f is in length about equal to the stationary rack c and adapted to be raised and low ered by the spindle e and thus brought in and 6o out of gear with the stationary rack o. For this purpose, I form the spindle ecam shaped, say near each end e3 and at the part e4 between the lugs f. These cam shaped portions e3 and e4 have an angular position of 65 about one hundred and twenty degrees relatively to each other. By preference, I form the portion c4 between the lugs f Vconcentric with the spindle e and with a flat surface e5, see Figs. 4 and 5, which allows the rack f to be 7o instantly raised ont of gear by the cams e3. The latter are respectively adapted to operate in a square hole, or, where avery rapid action is required, preferably in a round one f2 having a recess, f3 (as shown in Figs. 4 and 5) 75 formed in the rack lugs f and thereby raise the latter out of gear, see Fig. 4, while the in ner cam e4 serves to press on the rack f and thus hold it firmly in gear with the stationary rack c when the spindle e receives a partial 8'0 turn, see Fig. 5.

The front of the spindle e is formed or furnished with a shoulder or disk g and eye g', which latter receives the sliding pin as usual, or a handle h, solid therewith, or screwed to it, as shown in Fig. 2. The inner face of the shoulder or disk g, I form with a double inoline g2, Fig. l, or with a single incline, as shown in Fig. 7, adapted to operate against another disk g3 having a similar double or 9o single incline on the front of the sliding front jaw b and thus displace and force the latter home on its shank d whenever the spindle e is turned by its pin or handle h.

During the lirst part of the turn of the spin- 9 5 l dle e, the cams e3 lower and the cam e4 holds the movable rack frmly in gear with the stationary rack c', thus locking the hollow shank d in position, while thesliding front jaw b is forced home by the inclines g2. On Ioo the return movement of the spindle e, its end cams e3 lift the movable rackf out of gear with the stationary rack c and thus permit the longitudinal adjustment of the hollow shank cl.

In order to prevent the loose jaw b sticking on the return movement of the cam spindle e, the highest points of the inclines g2 are formed dovetail or nose shaped, as shown in Fig. 8, so as to engage each other and thus tie the sliding front jaw b and hollow shank d together longitudinally. For the purpose of protecting the incline or inclines g2 from foreign matter I tix around the same a cover z. as shown in Fig. l, having a stud or studs i adapted to engage a groove or grooves 2 in the disk g. This also serves to tie the two disks g g3 together in lieu of the dovetail projection shown in Fig. 8.

I declare that what I claim is- 1. In a vise the combination of a fixedjaw havinga hollow shank provided internally with a series of teeth, a movable jaw, a box carrying the same and extending loosely through the fixed jaw, a spindle passing through the said box and provided at one end with an operating handle, a locking plate carried by the spindle, and provided with a series of teeth and with perforated lugs to receive the spindle, and cams xed on the spindle in position to engage the lugs on the locking plate; whereby on the rotation of the spindle the locking plate will be moved to cause its teeth to engage or disengage those on the fixed jaw and thereby lock or unlock the parts.

2. In a vise the combination of a fixed jaw having a hollow shank provided internally with a series of teeth, a movable jaw, a box carrying the same and extending loosely through the fixed jaw, the said box being provided With closed ends d2 and with a partition d', a locking plate provided on its side with a series of teeth, and at its ends with perforated lugs, an operating spindle passing through the box and through the perforated lugs, cams e3 on said spindle adapted to engage within the lugs for raising, and the oppositeiy disposed cam e4, near the center of the spindle for depressing said locking plate; whereby the parts may be locked by rotating the operating spindle in one direction and unlocked by rotating itin the opposite direction.

3. The combination with the fixed and movable jaws, of the box extending looselythrough the same, the clamping device within the box adapted to engage one of the jaws, the spindle rotatably connected with the box and with the clamping device to operate the latter, the spindle-head having an active cam face, and a cam on the jaw with which the spindle-head co-acts.

4:. The combination of the fixed jaw a, movable jaw b, disk g3 attached thereto, having an incline g2 in combination with the spindle e and disk g having a corresponding incline working on the incline of disk g3 and a clamping device worked by the spindle e whereby by turning the spindle, the clamping device comes into effect and at the same time the movable jaw is pressed forward toward the fixed jaw.

5. The combination of the spindle ehaving cams es having their maximum point concentric for a long distance in combination with the Aforward propulsion device g g3, actuated by the spindle whereby after the clamping has taken effect the spindle can turn for a considerable distance actuating the forward movement of the loose jaw without unc-lamping.

6. The combination of the spindleehaving cams e3 and e4 and the clamping pieces ff whereby the clamping can be immediately applied and yet the spindle be allowed to rotate for some distance and the clamp can be immediately withdrawn and again the spindle allowed to rotate for some distance before the clamp is again brought into play.

7. The combination of the disk g3 attached to the movable jaw and having an inclined plane g2, the disk g fitted to the spindle e and having a similar inclined plane and the cover 'L' having groove i2 and stud 'i' for the purposes described.

8. The combination of the fixedjaw a, asliding but clampable device d, movable jaw b sliding on piece d and spindle e having the usual handle and head h and g with a disk g3 and a device on the spindle capable of giving a small longitudinal motion to said disk.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM WHITEHEAD.

Witnesses:

W. P. THOMPSON, G. C. DYMOND.

IOO

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