US1751329A - Vise - Google Patents

Description

March 18, 1930. H, H HANCOCK 1,751,329 I vIsE Filed Aug. 31, 1927 BY ,y

ATroRNEv l Patented Mar. -18, 1.930v f- Y er, i l

vviJNi'rgED, STATES PATENT OFFICE HARRY H. HANCOCK, on BEACH BLUFF,- ivrAssACHUsnTvs; HENRY A. sAvvYER AD- A lIVIKINISTRATOHk on sAiD HARRY H. HANCCCK, nnonnsnp y f vIsE iApp'licationled Aug'nst-v 31, 1927. Serial No. 216,754.

This invention relates'to a vise, theprincipal obj ect of Whichis tov provide the base-oa unitary vise vvith me'ansfor removably 'at- 1 i5 been thus primarilyiadvanced,nto, holdl the Work Wi-thcertainty in such an accurate, rigid position as cannot be obtained by the customary formof such vises,:so that the improved vise, embodying`-the combinedl gripping fea- 2'0 tures stated, is ;a self-contained iinitvvhich maybe handled as suchV for attachment to `or removal from a machine. C p f' i Heretofore theiisual unitary vises have not'had such-provisions as just stated, Wherei' 245 as other sofcalled vises consist merely ,of-jaws Which are `adjustable bybolts extending into the'slott-ed beds of the machines andV which are the equivalents of the boltsgvvliich are used Y .to attach the iisual unitary k,-vises. 'in position. Thus, such so-called vises are in; a,.class by theinselvesand'v although they kmay have means for obtaining siicha gripfon-the Work as to hold it fairly rigid,they donothave-fthe javv advancing-,means oftheusual unitary' vises and cannot first engageithe Work byv a quick advancing movement, norccan the jaw attaching bolts thereof b-e'eniployed in that connection7 as those bolts are not Vtheequiva` lent of the preliminary javv'advancin'gmeans` of the present invention. In fact,v if such bolts were relied vupon for obtaining a preliminary advaiicelmovement'j of the movable j aw,l they eould not be relied upon to obtainan engage- .1,45 ment ,With'the Work ivhichcojuldbe compan able With'the quick engagement ivliichcan ybe obtained under the present inventioinland." it thereforefollows thatsuch socalled vises can- Y notcause'the Work to be gripped vvithV thehconi- 50 bined' elements of quickness, jrfeliability, ac-

curaeyand ventionl; v Y .l

With these and other objects inviewfthe nrigidity as under the present-inl y present-invention resides primarily in avise j Comprising a lmovable jaw, ,Y means for preliminarily advancing the same up to the Work -tobe gripped, and positive means for further Yadvancingithe vjaw foi-,finally gripping the Work and for releasing the jaw from'such final grip, suchfpositive means` being operable ine dependently of the nieans for preliminarily advancing the movable j avv.

These beingl among the objectsof the pres-` ent invention,V the same yconsists of certain Y Vfeaturesof construction and` combinations ,oi partsto-be hereinafterdescribed and then claimed With reference to the accompanying ment of the invention,1in Which f Y y i 1 Figurelis a plan of the improved vise, the irregularity of lthe Work and the; vcomplementary adjustment of the movable javv being somewhat exaggerated orthe sake ofqclearness; l

Fig. 2 is a vlongitudinal sectionr thereof on the line of the' advancing spindle of' the movable'jaw,V which isiii a diierent'position from that shown inFig. 1; c Y F ig. 3 is a view ofpoitions ofthe vise sli'ovn in the section of F ig. 2, the WorkI not-"yetlhaif' ing been jrippedfg#` ,f Fig. 41is'a transverse section in tjlie plane drawings illustrating aprei'erredy embodi- Y of the a'dj'ustingpost ofthemovabjle-javv; k Q Fig. V5 'isa 'transverse section on 'the line Y 5 5, Fig. 2, the movable avv being show-n in Vfull linesfin one position andindotted lines in another position and Y* Fig.; Gris a ltransverse seotion on the line fic-.6, Fig. 2.

Referringlto the vdrawings-fthe!selfacontained-vise unit of the present invention' is providedfvvith a base, l0 having a stationary abutinentjavvfll fat oneend anda stationary lug l2 atV the /othere'ndf The machinesy to whichtheimprovedvise may be applied are usually provided Vvvith a numberof grooves or Ways, such as 18,in the b'edfll. VTo adapt f the device tothe v'vay'lB-sojthatit may be at,-

tached and removed asaunit, theba'se ofthe'v vise j is preferablyv provided-With .fastening `with open notches v16 `to receive the bolts.

whose uppei ends are screw-threaded and provided with nuts for tightening up the bolts. Such bolts are commonly employed for setting unitary machine visesin the zone in whicha piece of work is to be gripped and worked; i j .n

The unitary vise is provided with a slide 17 and with a movable head block 18, the head or 1 block 18 having a feather 19 which is adjustable in a transversely T-shaped slot or guideway 2O in the base 10 of the vise, which slot extends toward the stationary j aw 11. The slide 17 is lguided, in the wider portion of slot or guide-way 20' andis attached to head 18 by means of screws 21 which pass through the slide and enter the feather 19, whereby the slide and said head are rigidly secured together. n j

Arotary shaft or spindle 22 passes through and is journaled in a bearing formed by the lug 12, said shaft being suitably held against longitudinal movement relatively to the said lug. The'outer end of the shaft is provided with a hand-crank 23. This hand-crank .is preferably quite' small so that the vise may be applied in any desired place on the machine inasmuch as the length of the lever furnished Vby the arm of the crank is only great enough to permit the desired power to be applied to the shaft 22, which power need be only relatively small inasmuch as by the use of the hand-crank it is preferably intended only to supply sufficient power for preliminarily advancing, through theV medium of screw-thread 24, thejmovable jaw to be later described.

The movable head 18 is providedi'vitha screwthreaded bore 25 with which engages the 'screw-threaded portion' of the shaft 2 2. A y

A guide post 26 is vscrew-threaded at its lower endand is threaded into thatl end ofthe slide 17 which projects beyond the head 18, so that Va movement of the head 18 by th-e quick advancing movement produced by spindle 22 will correspondingly move the post 26. Op-

posing the stationary jaw 11 there is a wedge jaw 27, which is provided with a somewhat enla-rged'hole 28 which connects a recess 29 in passes through the relatively enlarged hole 28 the bottom of the jaw and a recess 30 in the top thereof, the recess 29, hole 28, and recess 30 being in alinement. The adjustable post 26 andthe recesses 29 'and 30,-whereby the wedge jaw 27 is mounted upon the post'. The movable head is of the unitary vise and the wedge jaw -27 thereof are provided with contacting inclined surfaces 31, the slant of the inclined surfaces extending in a plane at an acute angle to the axis of the screw-threaded shaft or spindle 22.

A collar 32 is pinned rigidly to the post 26, so as to be preferably positioned within the rec-ess 29. A bushing ring 33 is set more or less loosely into the upper end of the recess 29, and the holepthereof is enlarged correspondingly with the Venlarged hole 28 iii the movable jaw 27, and is interposed between the j aw and the fixed collar 32. The surface 33a of the ring 33 is convex and bears upon the adj a- Vflange or fixed collar 34, and the inner surface 34a of said flange is convex and has bear ing upon the lower end wall of the recess 30, and hence on the movable jaw 27. It will thus be seen that the movable jaw is loosely held upon the adjusting post 26, at least Suliicient to allow some movement of the jaw laterally, and it will also be seen that by reason of this fact plus the fact that the bearing surfaces 33, 34a are more or less convex, the movable jaw is adapted to be tilted with respect to its length, that is, it may be skewed with reference to the longitudinal axis of the screw spindle 22.

Whether or not the movable jaw may have a movement askew of the line of the axis of the spindle 22, the said aw may be positively adjusted either inwardly or outwardly by means of the adjusting post 26.

1f the movable jaw is mounted so that it may be tilted or skewed in position, it is desirable to provide means for producing such movements by the mere adjustment of the post .26. To that end a dovetailed member 35 is swiveled on a screw stud 36 which is fixed to the inclined surface of the head 18. The dovetailed member extends transversely of the inclined surface ofhead 18 and is received in a dovetail groove 37m the inclined face of the movable jaw 27. If the mhvable jaw is not mounted for a tilting or skewing movement, the dovetail member 35 may be rigidly fixed to the head 18'.

The stationary jaw 11 and the wedge jaw 27 are respectively` provided with hard metal face- plates 38, 39, the said plates being rigidly secured to said aws in any suitablev manner, as by means of screws indicated in dotted lines in Fig. 1. A piece of work 40 to be operated up on by the machine to which the unitary vise iss attached is held between the jaw plates 38, 39Miny a mannerto be described hereinafter.

The adjustable post 26 is provided at its outer end with a wrench head 41 to which a suitable wrench may be applied for the purpose of turning the post. j The wrench head 41 extends into the outer recess 30 yof the wedge jaw and does not project beyond the saidjaw, so that it is enclosed entirely within the said recessa In order to 'close the CTI recess and to prevent chips, dirt, etc., from falling into it, a cover plate 42 is YmountedY on pivot screw 43 which is fixed in the top of the movable gripping jaw 27." llVhenevery a wrench is to 'be applied to the wrench head 41 to turn and adjust the post 26, the cover 42 will be swung to one side to fadmit the Wrench into the recess 30. i Y

In the use ofthe improved unitary vise, the piece'of work 40 is placed between the opposing faces'of the stationary jaw 11 and desired firm contact with the piece of workv 40. This is the preliminary movement of the movable jaw 27 in order to engage the work between the jaws 11 and 27, and is more or less similar to the usual movement of advancing a movable jaw in previous unitary vises to grip'the piece' of work, except that such customary unitary vises are not provided with the improvements of the present invention.

After the work has been preliminarily engaged, a wrench isl applied to the wrench head of the adjustable post 26 and turned so 'as to turn the post and screw it more or less into the slide 17, thereby causing the post flange 34 to forcibly bear upon the wedge jaw 27 and to cause the inclined surface ofv said jaw to move kupon the corref spondingly inclined surface of the movable head 18, the jaw then partaking of a lateral movement to a slightextent toward the piece of work due to the presence of the enlarged hole 28 in the jaw.V In this manner awedging action is obtained and the movable jaw 27 is caused to more rmly and positively grip the piece of work 40 than is accomplished by the advance feeding movement of'a movable head or nut such as the head 18, as in the usual unitary vises, even though the entire advance movement of the head and movable jaw is produced by turning a hand crank of more powerful leverage than is that of the preferably small hand crank Thereby the piece of Work 40 is firmly, rigidly, positively and accurately grippedfor machining, tooling, etc., and cannot shift from its thus rigidly gripped position. When the piece of work has been satisfactorily operated upon, the cover 4 2 having been closed in the meantime, the cover is again opened and a wrench is again applied to the head 41 of the adjustable post and,l the latter 1s turned reversely, the fixed collar 32 of, the post and the intervening bushing ringY 83 causing. thev movable jaw to be positively movedoutward- 'ly or raised and to release the piece of 'works from V.the additional grip provided by'ftheY movable wedging jaw. If they Vreleasing movement of the Wedge jaw is insufficient, 1

as -itmight be, to entirely free the :piece of work, dependingv uponjhiow much lpressure hasbeen .Obtained bythe ,turning of the '.hamf

` crank, the crankf-23isrotatedreverselyfso as to withdraw theheadi .18 andfthe jaws 27k `Incases where the-.piece fof workl does not 7 v from the piecemof work;

have' parallelVfacesfwhichi are to be gripped, and thefacessare-more or .less irregular or inclined the one y with respect'to the other, itis desirable to provide thefimproved Aunitaryv vise with meansywhereby the movable` im may., be tiltfl ,longitudally 91' skewed with,respecttothe-line of the axisflof` ,the screw spindlet 22"that'p is with respect ,to the line` of the advancing gripping movement produced'by the 'movable head 18. Such ka movement may be obtained byreason o ffthe "swiveling of the pivotal 'member 35and'the freedom of movement V'permitted/at bearing surfaces Vbetween thefmovable' jaw `and the post. InFi'gfs. lmanid the movable jaw is shownV Vas having been tilted yaskew ofelthe longitudinal 'axisV ofthe advancing spindle 22, and it will :be seen that Vwhen '.an'irregular" piece of ,work Such as referred' t, is be; ing grippedby the additional -grippingaca tion of the movable-jaw 27,.the inwardf adjustment of .the -adj ustable y'post .26 and the soY go c

swiveling movement of the dovetailmember 'l 35 will permit ,thelmovable jaw toA rock upon the v`convex surface ofthe yflange '34 andthe convex surface of the bushingfringV 33 kto rock upon the fixed; collarV 32 ofthe post'. f 'A very important feature of the present invention isfthatibyY means ofithe' improved wedge. jaw nin unitary v'ises", the worky to be clamped lis'. forced inwardly toward 'the' base of'thelvise or t'ola parallel bar which it is sometimes necessaryto'place under thelwork to' bringy rits: vouter surface beyond the aws of the-vise.' Thisis anl important funcztic'in performed by thefwedgej jawff the lim proved unitary vise, inasmuch' as@ with the 1 y unitaryvises now in useit issometim'es diffl cult to firmly seat Vthe workL at the bottomv between Vthe' gripping Thewus'ual method Yis topoun'd'the work vdown'withfa I lead mallet or hammer'but such methodjcony surn'es valuable time, it sometimes mars the surface vof theiwrork,"anditis notfgood; vfor o thevise.` ,s n c i lIt is obvious that they invention herein described and `illustrated. inthe drawings is susceptible of various modifieations',andV fthe invention is not limited except ashdefied vin the appended claims(` y' `What Iclaim as new is.:

1'. In a vise, the combination of two jaws, a movable head for advancing one of the jaws toward the other jaw to preliminarily engage 'A the werk, the head having an inclined' end surface, means 'for mounting the movable jaw the inelinedsju'rfaee of Jthe head for -a tilting movement, and means for imparting i i V15V additional gripping movement to the said "m'oi'fable relatively to the movable head.

2. `In a vise',- the combination of two jaws,

Va movablehead supporting and for advancing one of the jaws toward the other jaw to preliminarily engagetli'e work, the head and its'jaw having mutual bearing surfaces out of parallel with the grippingplane of the jaws, a swivel for co'nnectii'io the movable jaw with the head, and means for adjusting the movable jawfrelatively to said head.

3. In a vise, the combination of two jaws, a movable head for advancing one of the jaws toward the other aw to preliminarily engage the work, the head and its jaw having mutual bearing surfaces in a plane vinclined to the gripping plane 'of the jaws, a'swivel on one of the inclined surfaces, a sliding connection between the swivel and the member having the other inclined surface, and means for adjusting the movable jaw relatively to said l head.

' 4;. In a vise, theV combination of a base, a jaw carried thereby, a head movable on the base,` a longitudinally adjustable post car- 'ried by the head and between thehead and said jaw, and a wedgincr jaw opposing aforesaid jaw and abutting the head, the wedging aw carried one way or the other by the longitudinal movement of the post, and having `toward said jaw, said means being vseparate from the base-guide,"a post adjustably sup Van enlarged hole foi passage of said post and to allow 'movement of the wedging jaw laterally of the joost.A 1 Y j 5. In avise, the combinationdof a base, a jaw carried thereby, a headjon the base, and a movable jaw opposing` aforesaid jaw 'and -provided with a surface inclined .upwardly and away from aforesaid jaw, and thehead having a surface inclined correspondingly to the inclined ysurfuev of the movable jaw, said surfaces bearing one on Vthe other, and guiding means supported by the head and on which the movable jaw is guided and rockably mounted.

6. In a vise, the combination of a base, a jaw carried thereby, a head, a slide carrying said head and guided on thebase, means for longitudinally moving the slide and head to'- portedlby the slide, between said jaw and the head, and a movable jaw on the post, the

v 'post having means for adjusting the movable jaw Ntoward the gripped work Vindependently HARRY HANCOCK.

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