US969186A - Blasting-cartridge. - Google Patents

Description

G. M. PETERS;

BLASTING- CARTRIDGE. APPLICATION FILED DEO.6,1907.

Patented Sept 6,1910.

otherwise damaged while being "shoved mtojthelblast hole,

ennsnom moonn-rnrnns or cnrcrmu'rr, onro.

-To oZZ whom it may concefltf v Be itlmown that I, Gnusnon M.v Farms,

and useful Im tridges, v

-blastin ensure-charmer. I

a citizen of the United States, residing at Cincinnati, in the-county of Hamilton and State of Ohio, have inventedzcertain new rovements in Blasting-Carofwhlch the following is a full, clear, and exact specification.

This invention relates tocartridges for purposes generally, but has more especla-reference to that type ofzblasting cartridge employed. in coal and other mins t i5 same by .a rammer.

- character .are usually gsives r uiring a detonating rimer-to set them -'0 and the container f?) and blasting operations where thereis efl ected by drilling a blast hole and forcing'the charge orcartridge into the Cartridges of this then r the explos ve 1s, llable tobecome mashed, distorted and even if this does not result in cloggingup the hole-and necessitat'e the extraction of the damaged car.- tridge 'with all the attendant dangers, it

leaves the primer exposed to the rammer,= and unless great care be exercised, -prema-- iture'explosion and loss of lifeare liable to protect the same follow. 1

provide an improved cartrid e of the de scribed character which wil be safe tohandle, and when used with a. rimer, will from contact w th the rammer.

.. Another objectofthe invention is to .pro-

blasting cartridge whichvide an improved will boot durable and inexpensive constructron and-will hermetically seal the exploa slve against the deteriorating influences of 5 the, atmosphere during stora eor shipment and will alsoifiprotect its exp osive contents from contact with water frequently found in places where cartridges 'of this description' are used.

With a view to the attainment 10f these ends' andlthe. accom lishment' of. certain w noueltykwhich will now beldescribedwith reference to the, accompanying 'drawin' s. and-then I the claims.

-eleyation of a blasting cartridge constructed other objects which w ll hereinafter appear,

more particl' larly pointed out 1n In'the said draWingS Figure l is aside Specification of Letters r mit. Application filed December 6, 1907. Serial No, 405,821.

loaded "with explo-- My inventiomis designed to obviate these i I defects, and it has fOlJiZS primary object to v smaller than the internal the invention consists-tin the features of according to thisinve'ntion. Fig. 2 is a longitudinal sectional view thereof, and Fig. 3 is an enlarged cross-section taken on the line 3-3,- Fig. 2.

The body portion A of the cartridge shell is com osed of a section of tubing which prefera bly consists of paper or equivalent Patented Sept. 6; 1910.

material,*and'may be constituted by a section of the paper tubing ordinarily em-,

1 ployed in the manufacture of cartridge she s, but is preferably made of several strata of paper a rotating-mandrel of the desired diameter aid up by winding a strip of the paper the desired numberof-t mes about and pasting or. gluin the strata to etheras j they are'lald up, so lat when drie ,"th e resuit is a stiff, hard tube, which may; be sub se uently cut into'the desired lengths suitable for the difi'erent sizes of cartridges to be produced. After thislength or section of tubing is obtained, it is provided near its extremities with internal shoulders B which extend around the inner periphery. thereofand form supports for wads or closuresC,

D,'that' are inserted into the ends of the shell. These shoulders B may' beformed in the shell or tube in any suitable way, either while the tube is being made, or subscuently, the means of producing the same owning-no part of'my present invention. A suitable method of accomplishing the result is to indent the outer surface of thetubethroughout a peripheral line by suitable" tool held thereagainst while the tube is rotating on a mandrel of proper size, also having a peripheral groove to receive the 'material displacedfmwardly. by

the external tool, or any other well-known beading'machine'maybe employed for the -purpose,butin the manufacture of sections of paper'tubing for cartridges, it is common tocinploy a mandrel in combination with a series of. rotating spaced knives for cutting the tube into the desired lengths, and hence the most convenienttway of producing these shoulders B is to press the wall of the shell 'into groovesin the'mandrel while the tube being m5,

is bemgout, the mandrel, of course,

diameter 1 of. the

any

tube thus decreased by theinward displace- I ment; of its ;-wall.

' Iii-loading the ishellwith theexplosive 1a,;

.one-ofthe wads C, D is first inserted in one a end of the tube against the adjacent shoulder ,B'; and the tube; atthis end is then crimped or turned inwardly, as shown at F, x

- sufiicient any suitable material may be'emving s d the wadagainst outward movement while the shoulder B holds it against inward movement; The tube or shell is then filled n'dpacked with the, explosive material, when the other wad D "may be inserted in theu per end of the tube against the retainoulder B at that end, and the top end then ,crimped as shown at G, like the bottom end, firmly ingcontact with .the wad D for holdin the latter against outward movement. T is being done both ends" of the shellare sealed atthe comunction of the wad and the end of the shoulder produced by the crimping F. G. Should the general water proofing ereinafter mentionednot be loyed or thus sealin the cartri' e to ender it water and air tight, but I- to employ for the purpose a..quant1t of sealing wax H, apphed or s un aroun the inner edge of the shell wh' ein a fluid or wad D, it is preferable to prepare it for the introduction of the fuse or primer, by making an indentation or partially 'punct-ur ing the same,. as shown at I, so that the puncture may be subsequently completed by the introduction of any sharp, rounded instrument, thereby prov1ding an entrance for J the introduction of any suitablefuse or stored, or putv directly primer, not necessary to illustrate. The-cartridge. being thus constructed and prepared, the whole is dipped into or otherwise coated with aoliquid water proof material, referably a qulck'drying substance, such, or ex-. ample, as liquid paraflin wax or asphaltum, rovides it with a complete envelop cartridge is then ready to be packed or into use, and will keep anylength of time unaffected by moisture or atmospheric influences.

It will be understood, ofcourse, that in the use of the cartridge thus constructed, it is or 'nary manner by means of a rammer or other suitable instrument, and 1 the shell' or boiriliy of'the cartridge being com'osed of st hard pa r or like material? it will maintain its s pe and the distortion and damage heretofore resulting from the action of the rammer, where the wrapper -or container 9f the cartrid e is composed of soft material, will be avo1ded; It will: also be seen that-'m' forming the outer shoulders by reammg the ends of the tube 01'. shell portion for hold ng the wads inplace two rigid flanges or rims are psoduced o 'sufiicient length beyond the wa as at G, to hold the -rammer alooffrom contact with the primer,

shouldit become osed or pushedto the surface in the actio placing the cartridge,

prefer 'upon' itsel state; Before inserting the last ushed into the blast holeendwise in the 'oeeaee and thereby iavoid all danger of accidental conta' t betweentlielprimer and rammerand the remature explosion which is liable to res t therefrom. In order that the invention may be understood by those skilled in the art, the" details of an exemplification thereof have been thus specifically described, but

What]. claim is 1. In a blasting cartridge the combination of .a tube for the explosive, and a closure inserted within one end of the tube and provided with a partial puncture. for the. in,-, sertion of a rlmer or fuse. I

2. In a blasting cartridge the combination of a tube for-containing the explosive, a closure inserted in the end of the tube for holding the explosive in place and having a partial puncture for'the insertion of a fuse or primer, the end of the tube bein tended beyondthe closure and double back f to form a rigid projection for holding a rammer aloof from the closure.

3. In a blasting cartridge the combina- .tion of a tube for the explosive, and a nonperforated wad inserted in the end of the tube at a distance from the'extremity thereof for retaining the explosive in place, the extremity of the tube being reamed inwardly toward thawed and a quantity of sealing material connecting the reamed extremity of the tube with the outer face of the wad.-

4. In a blasting cartridge the combination of a tube for the explosive, wads in the ends ofthe tube pressed against interior sup orts formed in the tube, one of said wa s being indented for the introduction of a primer, an explosive contained within the tube between said wads, the ends of the tube being reamed inwardly a ainst the wads, and an exterior coating 0 impervious ma terial completely enveloping the tube andwads and said indentation.

5. In a blasting cartridge, the cnmbination with a paper tube grooved near the ends to form inner shoulders or s'up orts, wads in the ends of said tube, one 0 said wads being indented or artially perforated and the extremities 0 said tube being crimped against the said wads to retain the! same in position against said supports, an

explosive material in said tube, and water'- proofing material entirely enveloping the casing formed by the tube and closures. In testimony whereof I have signed my two subscribing witnesses, on this 2nd day of December A D. 1907.

GERSHOMLIOORE PETERS. Witnesses:

A. M. BEEKLEY, E. R. Mnacxnn.

name to this specification, in the resence of

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