US871696A - Igniting-tape and process of producing same. - Google Patents

Description

No. 871,696. PATENTED NOV. 19, 1907. A. T. HERB. IGNITING TAPE AND PROCESS OF PRODUCING SAME.

APPLICATION FILED MAY 6,1907.

JW RMK To all whom ityma'y concern:

UMTED STATES PATENT o Io 1 ARTHUR 'r. HERE, on DEnVER, coLonAnd'issieuon'ro THE RAPID FIRE FU'sE IGNITERCOMPAN'Y, OF'DENVER'OOLORADO.

IGNI'rmdrAPE- AND ZEROGESS or rnonucme SAME;

' Be a known that I, ARTHUR T. HERB, a

' citizen of the United States, residing in the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Igniting-Tapes and Process of'Producing Same; and I do declare the following to .be a full, clear, and exact description of the invention, such as will enable others skilled in the art to'which it appertains to make and use the same, reference being had -to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this'specification. i

My invention relates to an igniting-device and a process of producing same and has for 7 its" object the construction of an inflammasive compound.

ble, rapidly burning, explosive, tubular igniting tape, which is prepared by coating a ribbon of cloth, paper or other suitable ma terial'upon one side thereof, with an inflammable, explosive compound, 7 which coated ribbon is then formed by anv suitable means into a tubular tape of indefinite length, and secured in this form by pasting the fabric, preferably, with a liable, waterproof, adhe- Iii forming the ribbon into a tubular tape the side which is coated with the inflammable compound is disposed upon the inner side of the tube, while the side of the fabric forming the outer tubular surface of the tape may be coated with any suitable waterproof compound, rendering the tape impervious to moisture, which-property is found necessary to meet the requirements of "assured thorough combustion of the ignitingtape.

practice in some of the arts to which the use of the igniting tape pertains. .This exterior waterproof coating also reduces the probability of conditions arising, tending to impair the explosive qualities of the interior combustible coating, because of hygroscopic properties, possibly incidentthereto. It is also desirable that the waterproof coating shall possess inflammable properties, whereby it will aid the interior compound in the I This tu ular tape is formed with an open center circulating vent or flue which aperture, together with the gases ofcombustlon, generated and exploded upon ignition of the tape, causes the same to burn with greatrapidity and burst asunder'the fabric. shell of the tube, flashing flames and sparks 'tionon hne 90- 90 0 Patented Nov. 19,1907. v

and assured ignition of combustible objects to which a length or circuit of the igniting tapeis suitably attached.

My invention 1s found to be of greatutility in the art of blasting, and is particularly (SO adapted to usein conjunction with the ordinary powder-core blasting fuses. By using a length of the igniting tape necessary to connect the same consecutively .with a round of any number of fuses by suitably .at-

taching the tape to the splitend of each, the simultaneous ignition of the same is effected. by the rapid combustionjand explosion of the tubular tapethroughout its entire connected'length. The ignition tape being v wa terproofed', it effects the same positive Signitionof fuses in wet mine workings, as in dry. My igniting tape can, inlike manner, be utilized. in the lnstantaneous ignition of set fireworks pieces, being made upon automatic continuous process machines, in indefinite lengths, of uniform combustible force. and of quite pliable texture, it is especially adapted to be connected throughout a circuitous line to objects such as the profile hghts offigure pieces,- portraits, etc.

Referring to the drawings, Figure 1 is .a side view of one form of construction of the tubular igniting tafpe. Fig. 2 is a cross sec- Fig.

sponding portion of the tape shown in side and edge view in Fig. 1. Fig. 5 is a plan view of a modified construction of the igniting tape. Fig. 6 is cross-sections Vand T, taken respectively on hnes V and T of Fig. 5 on an enlarged scale. Fig. 7 is a cross-section on line V of a further detail modification of the construction, shown in Fig; 5 on an enlarged scale. Fig. 8 is a graphic illustration. of the application of my igniting tape to the blasting fuses of a round of shots in a mine tunnel or drift. Fig. 9 is adetail, enlarged scale illustration, showing the preferred method of attaching the igniting tape to the split end of the. ordinary powder-core blasting fuse.

The same reference characters indicate the same parts in all the views. 1 v

It will be understood that to roduce this igniting tape 'as a commercially valuable article of manufacture, a method of con- I through the'fracture which effect the rapid 55 1. Fig. 3 is a cross- 85- section on line yI-y Fig.1 on an enlarged scale.- Fig. 4 is a plan view of the corretinuous-process, automatic machine manufacture must be resorted to, and in describof light texture, cotton cloth,

. the full width o ing the detail features of composition and construction of the tape, reference will be made to the detail parts of such machines,

only so far as is necessary to give a clear and conclse description of the detail con-' struction of the tape, since a description of such machine construction is intended to entirely sepaform the subject matter, of an rate and distinct application.

Referring to Fig. 1, I show the tubular tape 2, being continuously produced by the uniformlypitched s iral winding, 2, of the combustibly charge ribbon 3. This ribbon is made of any suitable material, as cloth,

paper, etc. As a matter of economic production, I prefer .to use a commercial brand woven, a slightly open mesh b.-ing best adapted to my requirements By any best adapted method as brushing, rolling, spray ing, etc. I char e or coat about three-fourths one side of the ribbon as 3 with an inflammable compound, the remaining uncoated strip 3', (being the followingedge of the spiral wind) being th rymg portion of the ribbon. ThlS coated ribbon may .be paid out from the usual construction of revolubly mounted reel 10, and thereby spirally wound upon a fixed, end- .tapered arbor or mandrel 12, with the inflammably c'oated side dis osed upon the inner side of the spiral tu bo.

2, 3, 4 and 9. e adhesive paste is applied,

.from any conyenient receptacle 14, revolu bly mounted to rotate in unison with the reel 10 immediately in advance of the closing sipiral Wind, (ried by bei assed through "a conveniently arrange I'ying box 15. The s iral tube is strip ed from the fixed mandre by carrying rol ers 13, taper end of the same. These rollers also serve as flattening rolls, ressing the spiral tube into the forinof a this manner does not seal Inasmuch as the engaging inner surfaces of the combustibly charged tube are of a dry,

mlnutely-particled, anulous nature. This flattened shape of t e. permits of winding the same into a comparatively compact mass,

when reelin it into packages for the market. Prece ing this reeling process, however, the flattene tape 2, immediately after leaving the winding not too closelye paste car- A tape of i greater explosive strength may be produced,

a longitudinally disposed' erture, 2", as shown in Figs. 1

as at 3, and is immediately arranged adjacent the at tubular tape as The fiattentubular igniting tape in a predetermined order, to effect the breakcult of igniting tape arbor and flattening rolls is subjected to. any suitable method of coating the exterior surface with a waterproofing compound, as for exam 'le, immersing the same in a vessel of liquicl coating, (not shown) being carried through the solution b conveniently (11sposed guide rollers, "an' if necessary.- then passed through drying chambers, (not shown) and subjected to enforced drying, permitting the continuous-process production, from which last treatment, it is carried to the reeling process above referred to.

- n 5 I show a modified construction of the tubular igniting tape, wherein the ribbon 5 paid out directly from a fixed bearing reel 10, and rolled transversely, into the hollow, longitudinal tubular form 4, by drawing the ribbon through a suitably constructe spiral forming die 16, or by other suitable means disposin the inflammably coated edge 5, of the r1 bon, within the outer, lapping paste-char ed ed e 5*, as is shown 1n cross section in i 6%. This tube is then flattened by suitab e carryin rolls, as shown in lan view at 4 Fig. 5, an in cross section in ig. 6 T. This form of tubular igniting tape may be roduced, with increased 8X5 plosive strengt by transversely rolling, by suitable means, an imflamma 1y charged ribbon, of properly increased width', into a double-lapped, hollow, lon 'tudinal tube, as shown in cross section in ig. 7, and then rolled into a fiat tubular tape, as also shown in cross section in this figure.

In Fig.8 I show the methodof applying the raplcl burnin explosive, tubular igniting tape, when used in firing a round of blasting fuses in a mine tunnel. It is desirable 1n practice to fire the several charges ing of the rock to the best advantage, as for example the center cut ou A,A,Ashould be fired first. The sides%, next and so on. Any' desired order of firing can be controlled to a certainty by cutting the blasting f-uses accordingly, as to their lengfi hs in the respective groups, those to fire st as A, A, A having the shortest cut fuses, an those next in order, B, B having the fuses cut slightly longer, with a uniform interval of increasing length, for the fuses of each succeedin grou next in order to be fired, as C, C, and D, D. The tape flashing it's circuit with instantaneous rapidity, practically i ni'tes all fuses to which it is attached simu taneously,, their varying lengths determining the order of firing the charge of each. By this method of, ignition a material saving of blasting-fuse is efi'ected, as compared with the lengths of fuses required for safety when igniting by candle or torch, in lieu of the circonsumed. The igniting tape, however, bein the cheaper commercia commodity, afiords the miner a more economic method of mining, enables snaps him to break rock to better advantage and assures him a reater degree of safety in the safety, I interpose, for his protection, the use of anecessary length of the ordinary slowburning blasting fuse E, which is attached to the igniting tape 2 .at any convenient point. The miner ignites this fuse only, at the free end E and while it is slowly burning its length to the end attached to the igniting tape, he is afforded ample time to remove to a Iplace of safety before the explosion occurs. T e fire from the time fuse E i nites the tape 2, which instantly flashes its lgniting flames in both directions, as. indicated by the arrows in Fi 8, firing all the fuses to which it is attache From the above description, showing clearly the utility of the i niting tape in controlling the firin of powder charges in mine blastin those s 'lled in the art will readily compre end the advantages to be gained by using this article as a quick match in igniting the set pieces, etc, of fireworks.

Having thus described my invention, what I claim is: 1 g.

1. The herein described process of forming an igniting device consistingin appl 'ng an inflammable coating toone surface a strip of material, also applying a coating of adhesive material toa portion of the same surface of the strip, and forming the said strip into a tube with the inflammable coat' inner--- most and with the portion having t e adhev v sive coating overlapping whereby the tubular form is maintained and finally flattening the device thus formed. 1

' 2. An igniting tape composed of a strip of material coated on one surface with an inflammable substance and having an edge overlapping ortion or part coated with an adhesive su stance, the said strip being spirally wound to conceal the inflammable substance whereby, the portion containing the adhesive substance is made to overlap the body of-the strip on the outside, the device being flattened for the purpose set forth. 3. An igniting tape com osed of a strip of material coated on one si e with an inflammable substance and also havin a portion of the same. surface coated with a hesive mate rial and spirally wound to protect the inflammable coated surface.

v 4. An igniting device composed of a strip of material coated on one surface with an inflammable substance and also havin a portion of the same surface coated wit adhesive material, the same being spirally wound to'lprotect the inflammable coated surface an flattened for the purpose set forth.

. 5. A process of forming an ignitin device, consisting in a plying an inflamma 1e coat ing to one .su ace of a strip of material and a plying an adhesive coating to a portion of t 'e same surface, forming the said strip into a tube and applying to the exterior of the latter a Waterproofcoatingr In testimony whereof I affix mysignature in presence of two witnesses.

ARTHUR T. HERR.

Witnesses DENA NELsoN, MAI GAW'LEY.

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