US1555823A - Hand tool - Google Patents

Description

' v W. A. BERNARD HAND TOOL Filed April 4, 1921 nections` between the spring and, theleverv handle and jawV maybe of any desired type, such for instance as 1s shown in my prior Patent No. 1,229,213, granted June 12, 1917. i.

A pin 22 is set in one of the jaws lllA and projects froin the face of Ythis jaw, so-tha`t-` it will be received within a clearance opening 23 within the jaw 13. The pin is provided near its upper end with anA annul'a-rwrecess 24, which is adapted to be engaged by the bifurcated end 25 of a slide catch'26, which is mov-ably mounted upon 'the jaw 13. Theslide 26 is provided with a slot l27 disposed longitudinally thereof through which is passed a screw 23 threadedinto the outer surface ofthe 13. Provision is thereby made for the sliding catch 2G to be moved longitudinally of the jaw 13. To4 prevent pivotal movement of this catchabont the pin 23, a pair of lugs 29 are struckl from the sides of thecatch 26 and are disposed upon opposite sides-of the jaw 13. The catch is provided with a rear upturned end 30, which may be Vengaged by the thumb or linger of the operator of the tool to slide this catch longitudinally of the jaw upon which it is mounted and into engagement with the recess 24 in theupper endof the pin 23 when the jaws are in closed position. As shown in Fig. 4, at this time, the pin projects slightly beyond the outer surface Vof the jaw 13 so that the recess is in position to beso engaged.

rlhe jaws 13 and 1 4 are provided? with working surfaces in the form of transversely directed substantially semi-cylindrical, recesses 31 and 32, which when the jaws are closed, as shown in Fig. 4, will together form a substantially cylindrical opening therebetween. This opening, as shown, in Fig. 9, is preferably slightly smaller in diameter than the fuse about which the cap is to be crimped.

The operation of theV tool is shown more especially in Figs. 5 to 9 in which an eX- plosivecap 33 andl and afuse 34 are shown between the jaws in position to be operated upon thereby. As shown in Fig. 5,'the end of the fuse is placed within the cap and the portion ofthe cap to be crimped is inserted between the jaws and moved toward the pivot 12 until it contacts withfthe stop pin'22. This will position the capl and fuse adja,- cent the working openings, 31 and32, so that when the jaws of the tool are brought together, the cap will lie within these two recesses. The position of the` cap and fuse when the jaws first are brought into Contact therewith is shown in Fig. 6 when they assume a correct position within the working surfaces Vof the jaws. Further movement of the two jaws tends to cause the wall of sume an elliptical shape, as shown in Fig. 7.

It is clearly brought out in this figure that Sthecap, while, of course, being somewhat larger than the fuse inserted therein, is larger india-meter thanl the diameter of the cylindrical opening provided within the two jaws 13 and 111;.` As shown in this ligure, besides completely filling the semi-cylindri cal recesses, there will still be considerable portions at oppositesides of the cap, which will lie between the` jaws.

The real crimpingoperationof the tool now begins. It will be understood' that as the aws are mounted for parallel' movement, the pressure brought to bear upon the cap will be brought evenly in directly opposite directions upon-thel upper and lower` por.- tions thereof, which willtend to cause the cap Vto be compressed tightly about the fuse upon each side of a diameter drawn through the fuse at right angles to the movement of .the jaws or vertically, as shown in Fig. 7. The excess of materialwhich is shown to lie between the two jaws in Fig. 7 is squeezed outwardly in the formof plaits by continued movement of the jaws, as shown in Fig. 8. The cap is now tightly compressed or crimped about the fuse and a plait is formed upon each side of the cap, thustaking up the excess of material and effectively secnr? ing the cap to the fuse. The plane portions of the aws adjacent the semi-cylindrical recesses will act uponthese. plaits to flatten themout, so that there will be no tendency for them to spring apart and thuslQQSenthe fuse within the cap.

It has been demonstrated that the parallel movement of the jaws is a very important feature in the successful operation` of a tool of this kind. The evenly distributedV and directly opposed pressures upon theV opposite portionsfof the cap shown in Fig.` 7 would not be obtained; with any other Inovement such for instance as would be provided by the use of pivoted or alligator jaws. There would be in the latter case a tendency to squeeze the surplus of metal toward the forward side of the cap, sothat there would not be the taking up of the material in the form of plaits upon both` sides of the cap.

Moreover, it will be apparent that by the provision of a stop for positioning theworlr, I, have greatly increased the efficiency` of operation of the tool. Instead oftheuuser having to be particular to seat the work within therecesses in the jaws, he has only to insert the cap and 4fuse between Ithe jaws and move them rearwardly until they'come into contact with the stop, which operation will not require his attention. Moreover, in the structure of the pin 22, I have provided lbe11 i'1 nted tothe exact details shown, apa'ble'of many;V modiiicationsand variations fwhichffwill lie within I the vspirit j fof@ nvention Y' and within 'the'- scope-oi thea pe led yclaims.: l`v` 11: v Wha claimis:

ng about affusel-or g the like, which comprises 'iinsertingthe v ,casing with -V the fuse ltherein 1 between "a Epair' ofV parallel j aw members having complemental recesses yformed therein to f. receivethe lcasingandsimultaneously:exerts Y ing pressure upon theupperand lower por- .tions Vby moving said jaws' bodily toward eachother to cause the excess material voi the casing toY be pressed out evenlyon both sides of the fuse in the form of plaits'.

\ f Q .;The method of compressingv acylintions of the same in'reeesses, jof; substantially 'semi-cylindrical' shape, in-ftheV opposing sur#vk faces of a two oppositely disposed :spaced parallel forwardly opening jaw membersrk and then producing relative j approaching "movement, of the jaws While maintaining their parallelism.v f 'j 1 3. 'The method of crimping a tubular cas "about'a fuse or ,theflike by forming lfplaitsupon lboth sides thereof which com' `;.Tpri'sesplac'ing'the casing between Atwo paralvlel 'fjavx'f ;me1nbers provided with 'icomple i v`:mental `recesses tofreceive and compressfthe "casing and. 'ezlertingfpressure fu'p'on it" Vin fj'y jaws bodily directly toward eachother while maintaining .their parallelism to `force thek excess'metalof the casing. into flat. fplaits at 'i 'both sides: of the fuse. Y

:if'"Qaboutvv a fuse Vor i the like,v comprising apairV of .'pivoted han'dles,-a Vpair .of jaws pivote'd `f-movement thereby, and presentin'gfja forwardly opening throat, saidfjaws beingpro- .vided with relatively large transversefre- I.cessesto,receive portions ofthecasin'g at 1' the upper and lower sides thereof, and hav.-

l '5*.5A cap'crimpingftool, com' desirable in thatftliis 'catch' is placed in con ated therebyin pa'rallel Imovement,-feach oi tv'eriientpositio'iffor"movementyby theflthnmb v large'transversefgroove'vorfseat segment thefjawsfin? closed? posi-s 'cross section: toreceiveV afportion ofth cap,

l and Y' withy Vflat s'jurfacesl upon each f--side"` :cf ong, the other'j awwhereby -pressurefmayy be fthefjaws'adjacent therecessesj,

of lpivotedjhan'dles and a pair ai ated V,thereby in parallel, movement .Themethodof crimping a tubular cas-V cross section to receive aportiorr ofthec'ap,

Y ,i tionsofthecasing in'dire'ctlyopposite direcy oted handle members,a pair of jawsope'rf f drical casing about a fuseor the likewhich comprises seating voppositely disposed pore,v

I i operating withsaid stop `membentoflocl;Y Y,

rv9. A hand tool comprising a VAotedv` handle members, a pairy of' jaWsoper-" theworlr betweenthe jaws, anda catch co-l said jaws in closed position,

oted handle' members, apair of jaws operj ydirectly 'opposite'directionsfby ymoving said'y Y oted nandlemembers, a -pair of jawsl'operV-IQ 1 saidV pinto loclthejaws in closedv position.

LA tool for clamping' a Ytubular casing oted handley members, a pair otjjawsffoper-L fatedv in, 'parallel movement-thereby, -a mem-`r "tofsaid handles and guided for V'parallel'v oth'erj aw when the tool is closed, and means' goves' whereby pressure' Ebv'exert; lon the" casing directly opposite directions 'byf, b'otgh `j,aws' simiiltaneously.

'of pivoted'handles `and 'a pair saidlj aws 'beingy provided with aggrielatively 'said groove opposing similar., 'nat "sufran@s exerted -uponthe capfin directly opposite'f1 directions 'f and: 'the excess, "metaL therein Y 1 saidif'aws'being provided'fwitharelati Y large transverse groove or seat .-segmenta in and withlat 'surfacesupon each-sident @saidfj groove opposingsimilar flat surfaces :other Vjamr,*ar1d ar stop 'd'sposedj aft-the .rear :of: said recesses to position thework therein. Y' V27;, Ahand tool comprisingk ap a'irfofpiv/r Eotedlh'andlemembers, a pair ofjawslopen7n ated 'thereby andcommon meansffor posi-` tioning the work between the jaws and Y locking the tool in closedoposition.' Y Y 8. A handy tool comprising a pair of'pivg ated thereby, a stop member for positioning w05 the work between the jaws, and. means 'cosaid jaws in closed position. Y

ainfof ivated thereby, a stop member for positioning operating with' said stopf memberitolock,`

l0'. Aha-nd toolicomp'rising a nl# i i ated thereby, a stop--ftoaposton th WorkY between the jawsand a sliding fcatchgto en? gagek saidistop to lockl the ja'ws lins'c'losed g 1 Y position. I 1

11. 'ii-lhasa' weil @missing a pair 'fv-f ated inl'parallel movementthereby, af'pin upononeof said jaws-and means'to engage j 12., A`A'Vhand tooljcomprising apairof pijlber,` upon one aw, projecting 'beyond-tha upon the second named jaw to engagensaid .member to lock the -toolin closedposition. "1 Y the other jaw having an opening,` to receive said pin, the pin projecting through said opening and beyond the second named jaw when the tool is in closed position and means to engage the projecting end of the pin to secure said jaws in closed position.

14. A hand tool comprising pair of pivoted handle members, a pair Qt jawsoper'- ated thereby, a pin;l upon one of said jaws, the other aw having an opening toi receive said pin, the pin projecting through said opening and beyond thel second named jaw when the tool'is in ,closed position and a catch upon the second named jaw to engage the projecting end of the pin,

15. A hand tool comprising a pai-r Vof pivoted handle members, a pair of jaws operated thereby, a pin upon one of said jaws, the other jaw having an opening' to receive said pin, the Vpin projecting through said opeijlingy andv beyond the second named aw when the toolisinclosed'position and a catch upon the second named jaw slidable into position to engage the projecting end of the pin.

16. A hand tool comprisinga pairfof pivoted handle members, a pair ot' jaws operated thereby, a pinupon one of said jaws, the otherj aw having any opening'to receive said pin, the pin projecting through said opening and beyond the second named' jaw when the tool is in closed position, the projecting end of said pin having a recess therein and a catch to engage in said recess to lock the jaws in closed position. i j Y 17. Al hand tool comprising a pair of pivoted handley members, jaws operated infparallel movement thereby, a pin secured to one of said jaws, a slidingA catch mountedV upon the other, said catch beingmovable to engage said pin to lock the jaws in closed position. j

18. A cap crimpingtool, comprising a pair of pivoted'` handles and a pair ofja-ws operated' thereby Vin parallel movements, each of said;` jawsl being providedA with a relatively large transverse' groove or sea-t segmental in cross section to; receive a` rportion vof the cap, and with` flat surfaces upon each side of said groovejopposing:"siinilar flat surfaces on the other jaw, and a stop pin upon the face of' one jawextending into an opening ini the other-jaw to position the Work longitudinally of the tool.

In witness whereof, I have hereunto set my hand this 2nd day of April, 1921.

wiLmAM A. BERNARD.

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