US1431421A - Blasting-fuse implement - Google Patents

Description

H. PRINCE.

BLASTING FUSE IMPLEMENT.

APPLICATION FILED DEC.8, I920.

1;.431,421. Patented 0ct.10,192&

Z0762 7a), v q,

Patented Get. 10, 1922.

HARRY PRINCE, oncLEvE 'Ann, OHIO, 'AssIG'noK-ro THE CITY BRASS FOUND-RY COMPANY, OF CLEVELAND, OHIO, A oonro'neirro v'pn .oHIo,

BLASTING-FUSE IMPLE ENT. 7

Application filed- December 3, 1920." Seria1-"No.429,152.

To all whom it may concern:

Be it known thatI, HARRY PRINCE, a citizen of the United States, and a resident of Cleveland, county. of @uyahoga, and. State of Ohio, have invented. awnew' and useful Improvement in Blasting-Fuse Implements, of whichthe following is'a specification, the principle of the invention being herein 6X1 plained and the best mode in which I have contemplated applying that princlple, soas to distinguish it from other: inventions.

:My invention is. an implement wherein are combined all the necessarymeans to facilitate the connection of a fuseto. a blasting: charge.

Heretofore the various operations of cutting a. proper length of fuse,.crimping adetonatingicap upon; one; end 'thereof, splitting the other end for". priming-or easier. lgnition, and; finally forming hole in the blasting charge to receive. the. detonating cap,-have been performed with: a number. of implements. or with; a'pocket knife and like improvised means: In this way much time is consumed and'notinfrequently the fuse and its-connections are so injured that-the charge is unexploded or' a delayed explosion is caused-with: all its attendant danger to life andxproperty; The object ofmy'invention: is to combine in asingle; hand implement means for carrying outT-each ofthese operations in a practicalscientific way so that each step may be properly performed and all danger ,of uneXploded or delayed charges avoided, At thezsametime theycorrect timing of thefexplosion maybemore accurately gauged; To

theaccomplishment of theforegoing. and related-.ends sai'd invention, then, consists of themeanshereinafter fully described and particularly pointedout in the claims.

' The anneXeddrawing-and the following. description set-forth'in'detail certainconstruction embodying the invention, such disclosedemeansconstituting,however, but one Y of various. mechanical formsin whichthe principle of the invention may be used;

- In said annexed drawing} y 1 Figure l' is a. side view of the device in its normal-position for. use, the jaws being 6 isan enlarged cross-sectional view of the jaws, as shownin Fig. 5, with a fuse and cap in place betv' een said aws illustrating the crimping action. of the s'ame;Fig. 7 is" a: perspective view of the fuse with the cap crnnpied thereon after the completion of the operation illustrated in Fig: 6; and Fig. 8 is a 'persp'ective' view of the end of the fuse after the completion: of the slitting operation by' means ofthe"; parts indicated in Fig; 3, the slits bein'g'inade: in'both vertical and ljrfi'orizontal directionsPthrough the end of the use.- i

v As is clearly-"shown inFig. 1', two crossed members-11, 2, are provided having a pivot 3. attheir-point of intersection, which'ispreferably of the type: wherein an enlargement is provided: on each? member of half the usual thickness. of thei remaining portion thereof; thereby forming.- a recess to: receive the like part of its companion member. Registering transverseapertures; are. made centrally of the; enlargements rol the reception ofthe pivot pin. Each. of these crossed members: isprovided on.- opposite sides with oppositely; facingi'shou-ldersi 4,. 5 and 6, 7 which, when the. parts arezinw assembled re:- lation, limit the amou'nt zof opening move ment; of the-ends of said-members; The-ends of the members upon-one side of the pivot comprise the-jaws .8 and 9 'of theimplement, and the portionson the opposite side of thepivot 10 and 11: comprise the w operatinghandles and are preferably of a length several times: greater than i the length; of the jaws so; as to secure I the. desired amount of leverage. Upon the innerqsideof, eachof the handle portions of the implement: is pro.- vided: a projecting stud-.-12, -13 upon which I arerseatedthe oppositeendsrofani expansion spring. 14.

One of the handle portions is preferably tapered-. 210.- as toprovide asharp point 18 at its endand adjacent thereto to be; of a diameter corresponding to that of the usual detonating; oap:. employed; in setting off explosive charges.-. Near'the end ofthis member, upon-the outer side,.is provideda notch 17 over which maybe en gaged aloop; upon. a latching: member 16, the other end oftwhichg is: supported within a perforated lug. 15iprovided adjacent the inner side of the end of thelopposite handle v portion.

tudinaLslits; 19., 23. out. intotheir inner: faces 7 The jaw portionsof the imple. 'ment areqrespe'ctively provided with longiand extending from a point adjacent the pivot through their outer ends. Within the slit 19 in one of the jaw members is inserted a knife blade QOwhich isv preferably held in position'by means of seyeral screw studs 22 inserted through apertures drilledt ransversely through the knife andp jaw member The inner edge 21 of the" at that point. knife member is preferably,ofcurved forma! tion so as to make the knife blade of lesser [width at yitsextreme inner end for a-purpose to behereinafter explained; The..jaw memberopposite. the blade car- 'rying jawpmember 1s provided at its end with vaseat or socket 24 preferably drilled into the end of this member centrally thereofand in line with the slit 23, already'referred to. Rearw'ardly ofthis longitudinal seat or socket this jaw is provided with a transverse seat preferably formed by" pro viding a notch'having a. vertical face '26 at its inner end and a face inclined upwardly and outwardly therefrom to form its other side 25. The shape :of this notch ada pts it to co-operate with the curved; inner end .portion' of this knife blade, andcauses a sectionof fuse iplaced within'the notch to'be severed by suchblade by means of a shear ing icut ejgwherein' the inner portion of the blade-first engages said fuse and the edge of the blade is progressively advanced through it-with a'greater movement-of the outer portion until the cut-isfirst com pleted at the outer portion of the f-u'sezf The vertical face'26 receives the thrust of theblade during this shearing operation and holds the fuse rigid, "insuring a clean cut squarely-across thefusew Inward'ly of the position of the knife and the co-operating slit portion of-the opposite jaw, each of'the jaw members is provided'withico-o *erating sections of the-crimping device. T is com prises co-actingi transversely grooved por tions-27, 29 upon the inner faces of the jaws,

having co-operatingraised central portions 28,39. Thus, when the jaws arein closed position, they present a transverseltubular aperture of a diameter, at'each of the outer ends, ofa size to correspond'with the'diameter of the cap 32 to b'ecrimped 'upon the fuse;

31, and an inner tubular section. of smaller diameter which I action. p

As illustrated in Fig. '7 ,when the crimp ing'action .just referred to is completed, the cap will"present'at its end adjacent the fuse a depressed anmu'ar ortion- This depressionneednot be made'at the exf treme end'of' the "cap, but'may'be placed at any desired position above the lowerf end thereof, which normally contains the detonating gcompound. J The ioperatio'n per formedby theflongitudinal socket and the co-a'cting portion of the blade is illustrated in"*Fig.- =S, whereim-is shown the end 0ft produces the I crimp ng fuse slitted in two directionsat right angles 7 to one another, thus providing four ends which are easy of ignition and to which 'may be applied a priming compound, customarily a portion of the explosive charge itself.

The. use of this implement will be apparent from the description of its construction above. outlined; Thus, the fuse is first cut squarely across at each end bymeans of the transverse notch and the co-actingpon tion ofthe blade," one end iszthen inserted in the detonating cap and the crimping por tion of the implement is used upon the inner end of the cap to' fasten the cap upon the fuse, and the otherend of the fuse is then. slitted in oneyoras many directions as de which guidesthe cutting edge. The crimp-- ing jaws jare located at'the' point where the greatest jmechanicaladvantage is obtained for the compreming operationq Where a large number'of 'shotsare to the construei set off at a-predetermined time, in a mine working, for example, the use of my implement will insure the. plos'ive being properly placed, with more speed and with greater accuracy tha wherethe operation "is attempted to be carried out'without the ,aid of such device. g

I Other modes of applying the prmcipleof the one"explained, change being made asregards the construction hereindisclosed,

provided themeans' stated by any of the followingclaimsor the equivalent of such {stated means be employed. i

.I therefore particularly point out tinctly claim' as my invention 1. Inja compoundtool, 'a' pairyof crossed members" pivoted at. theirintersection and each. comprising a 1awsect1on and a handle section, a knife blade having a'cuttingedge convexedly curved at its 'rearend' mounted and dis- 1 longitudinally of the inner face ofone 'ofthe 7 jaw sections,a' longitudinal slit provided in theinner face ofthe other jaw 8001310 11 adapted to receive said knife blade, a longitudinal socket formedxinthe last mentioned aw. section and bisected by the pathpf said blade, and a transversenotch in said w S80? 110 my invention may be employedlinsteadof tion immediately back of said socket and intersected by the path of said knife blade, said notch having a vertical face at itsinner end and an inclined lower portion to co-act with the curved portion of said knife to produce a shearing cut.

2-. In a compound tool, a pair of crossed members pivoted at their intersect-ion and each comprising a jaw section and a handle section, a knife blade mounted longitudinally of the inner face of one of the jaw sections, a longitudinal slit provided in the inner face of the other jaw section adapted to receive said knife blade, a longitudinal socket formed in the last mentioned j aw-section and bisected by the path of said blade,

a vertical and an oblique wall presenting a transverse notch in said jaW section 1mmedlately back of said socket and intersected by the path of said knife blade, co-

operating elements providing a series of shoulders adapted to crimp a fuse cap formed in each of the jaws adjacent the i pivot and inside of the position-of said knife blade, and a fuse cap recess forming element provided upon the end of one of said handles.

Signed by me this 1st day of December, 1920. i

HARRY" PRINCE.

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