US1902706A - Combination fuse holder and lighter - Google Patents

Description

fMarch 21, 1933. F E. KEESE, JR 1,902,705

COMBINATION FUSE HOLDER AND LIGHTER Filed April -21, 1932 *WL A +515 l MY v ATTORNEY Patented Mar. 21, 1933 FRANK E. IKEESE, JR., F

IfItoN erven, MICHIGAN y i if COMBINATION FUSE HoLDE-RND LIGHTER y Appunti@ mea April 21,

This invention relates to ycombined fuse holders and lighters and has for the primary object, the provision of a device of the above stated character which is especially adapted for receiving and holding a plurality of explosive fuses regardless of their lengths and having an igniting medium which vwhen lighted will be slow burning and will successively ignite the fuses in accordance with 19 the arrangement thereof in the holder to assure lighting of all of the fuses with maximum safety to the operator and permit the( operator to easily reach a point of safety or shelter prior to the explosion.

l5 With this and other objects in view, this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

20 For a complete understanding of my invention, reference isto be had to the following description and accompanying drawing, in which Fi ure l is a plan view illustrating a combine fuse holder and igniter constructed in accordance with my invention.

Figure 2 is an edge elevation illustrating the same with the igniter removed.

Figure 3 is a sectional view taken on the line 3 3 of Figure 2.

Figure 4 is a transverse sectional view taken on the line 4 4 of Figure 1.

Figure 5 is a similar view taken on the line 5 5 of Figure l. Y

Figure 6 is a fragmentary sectional view taken on the lineG- of Figure l.

Referring in detail to the drawing, the numeral l indicates a holder comprising a pair of relatively spaced plates 2 which have their ends offset inwardly and secured to-V gether by rivets 3. Rightangularly extending flanges 4 are formed on the edges of the plates and the ianges of one plate extend-in corresponding direction and in opposite directions to the flanges of the other plate. Hooks 5 are carried by the ends of the holder and removably support an igniting medium 6 preferably constructed from a slow burn- A .ing composition. The igniting mediumis 4flattened throughout ay portion thereof and 1932'. s riai' No. 606,711. "f y Y "f E, disposed.V opposite one edge of the holdenl while theremaining portion ofy the igni'ting medium is of rod shape' and projects a coni siderable, distancel beyondA ,oneV end ofl the-v holder for the purpose of being ignited .by the I5 operator. vThe, rod shaped'portion of the;

igniting medium is comparatively slowburning, Vwhile the flattened portion ofthe igniting lmedium is capable of producing-.sunlicientvflame' to assureY the igniting of fuses 7 p carried by theholder.. I v i `Retaining tonguesV 8 are. struck inwardly. from the plates2 and havetheir free -efdges serrated-as shownat 9 for thepurpose of permitting the `.fuses 7 to be'readily'insertedb'ef'v tween theplatesbut which willprevent accidental removal of the fuses-'from the holder dueto the serrations biting intol the fuses las f .shown infFigure 4. referring to the k drawing it willbe Yseen that 4a plurality of fuses may be accommodatedv within the holder and that the fuses can be secured in place to be'ignited by the burning of the ignitiony medium regardless of theirlengths. f

f or a number o f years it has been common practice in mining work to usesafety fuses and blasting caps .to lire or ,ignite high.4 explosives. The.' fusesy are lout in v di'erent lengths so that the charged holes will lbe y exploded in theorder wanted and asit is SCE/lit necessarythat the center or cutting in holes explode beforethe others, the lengths of .the fuses for these holes are naturally shrter` thanthe others; The llemgths of all fuses, however, must be long enough to allow Ithe 8%@ operator afterlighting the ignition ,I nedi'urnl sufficient time to seek shelter from the blast, the burning speed of ordinary fusesv being approximately two feet perminute, and it will bevreadily seen that the shortest fuses 9%@ cannot Vsafely be lessl than three feet in length which allows thirty seconds for lighting theV fuses and then one minute for the operator to reach a place of safety, however,'in many instances a greater time should be afforded V9?? the operator to reach a point of safety and which can be easily accomplished by increasing the lengths of the Vfuses. `The ends of the different fuses areplaced in the holder in the order thattheholes are to be lired,

` ignaro@ in. other words, the shortest Jfuses are placed in the holder at the end Where the re fromJ the igniting 'medium will strike first, the other fuses being .placed beyond the shortest one in the 'order of fringand in this way the fuses for the cutting in holes arelit beforey the others and due to the different lengths of the fuses theyr will-fire the'eX-plosives inA the order desired. A device of this character n)provides maximum` safety and permits `one person to light sei'fera-l'times the number ci holes than formerly and with maximum safe ty. `It vis to be understood that the holder. may be varied in lengthto suit various min- I ing conditions wherein the number of fuses employed vary.

While' have shown and described the preferred embodiment'o my invention, it will be understood that minor changes in construc-y tion, combination and arrangement of parts may be made without departingfrom. the spirit and scope of my invention, as claimed.k Havingl thus described my invention,` what I claim is je 1. A holder comprising spaced'plates fixed together to receive therebetween a plurality of' fuses with their igniting ends arranged in alignment, tension tongues 0n saidr plates and gripping the fuses, and a. burnable Ineage dium carried by'said platesand arranged in close proximity to the igniting ends of said fuses.

2. A. holder comprising spaced'plates fixed together and receiving therebetween a plu- `vrality of relatively spaced fuses with their igniting ends exposed and arranged in alignment With each other, resilient tongues struck from said plates and having serrated edges n to bite into the fuses, and a slow burnabl'e me.

dium carriedl by said plates to ignite the fuses. p

3. A holder comprising spaced plates fixed together and receiving therebetween a plurality of relatively spaced fuses with their .i t igniting ends exposed and arranged in alignment with each other, resilient tongues struck fromsaid plates and having serrated edges to bite into the fuses, hooks carried by the ends of said plates, and a slow burnable medium removably supported by the hooks lying in close proximity to the fuses and projecting a desirable distance beyond one end of said plates to be ignited. 55 In testimony whereof I aiiiX my signature.

FRANK E. KEESE, JR.

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