US1901126A - Explosive composition - Google Patents

Description

Patented Mar. 14, 1933 r I v V I} '7 I l stares Parent w re: I

ROBERT SCHLESS, or EMr'on UM, PENNSYLVANIA, Assre oR, T PENNSYLVANIA POWDER COMPANY, OF EMIPORIUM; PENNSYLV IA A CORPORATION OF ZPENNSYL VANIA V V Y EXPLOSIVE COMPOSITION f No Drawing. Application filed. 0ctober29, 1930. Serial No. 492,092. 7

This invention relates to explosives, and straw, and especiallywhen in comminuted I more particularly to explosive compositions or in disintegrated condition. i containing high explosives of the nitro- Straw and particularly wheat straw is be- P glycerin type. v ing utilized today for producing an insulat- In the low density type of explosives, used ing board product, and in themanufacture of 55 to-a considerable extent particularly in coal such board material, and particularly after mining and quarrying operations, various trimming, there remain cuttings'or saw dust types of absorbent carbonaceous materials representing waste material; Such insulating have been employed.- But such explosives board-manufactured from wheat straw is ofhave been found as a general rule to be less fered in the market under the name of Inso sensitive to propagation than other types of board, and this particular material ishereinexplosives, especially so upon storage. The f er referred to as Inso' board sawdustreason for this lack-of sensitivity appears to The cereal straw, and particularly. wheat V reside in the factthat the various Carstraw and also more especially the Inso V bonace'ous materials that have been suggested aICl awdust have been found to be ad-fi? in the prior art as fillers furnishing the devdntegeously useful i explosives as the ea sired bulk, are at the sametime very efficient bonaceous absorbent materials, since. they absorbent materials. Their absorptive power' h lm e p ien the q ir m n of far exceeds the capacity necessary'to hold i the liguld exploslve ingredients sufiicient for absorption the comparatively low amounts of preetleal p p i GXPIOSiVBS f t is-type, nitroglycerin contained in the low "density and addition y" serve to upp y the 00m; types ofexplogiveg AS a, result, of 511 1131); bLlStlblematerial in the process Of the 6X- b t p rgperties the it l ri th treniely rapid combustion called explosion. normally liquid high explosive, is held in the N0 s p ion 0 G C a iOII Of sucllabsorbed 3311s .01 the, carbonaceous material too llqlllds OOCHISBVGDV after PI'OlOIlged. storage. 79 tenaciously, and this aifects the sensitiveness An further the @Qnlmimlted cereal straw acts of the explosives. And this is particularly P Y retalnlng h posi ion a true on storage of such explosives, since upon desllied B eSS o long periods of time, storage they become rather difficult to coml erably longer than h t POSSQSSed by plet-ely detonate, or to propagate th the prlor art types of absorbents utilized in 39 1 1 f t id t t id this class of exploslves. Further, the density Among the objects of the present invention f Cereal Straw is Such a ity ilds eX- is the production ofexplosives, particularly P 0f a desirable high cartridge count. of the high explosive or nitroglycerin type, T11PPQIQH1StlfEIW fin sa i factory physical and within the class of low density explosives, Q Q l l l I10 7 l j lC treatment which explosives retain their sensitivity to a for e p ym ntm he manufacture of exdesir d d gr v upon t a plosive compositions. ltishould, ofcourse, 7 Other and further objects and advantages be commimlted, disintegrated, particuleted A of this invention will appear from the more a p d rto. reduce it to the size Of detailed description set forth below, it bein particle desired for this use. In-view of the understood however that this more detailed l rge quantities of .Inso board sawdust? and description is given by way of illu tration other material of this character which is only, and not by way of limitation, ince readily available on themarket, such mar various changes may be made in that r terial comprises a very economical ingredient detailed description by those skilled in the art in the manufacture of explosives. While such without departing from the scope and spirit cereal straws require no particular further 7 of the invention herein described and claimed. treatment for their use in explosive compost In carrying out the present invention, there tions, they'may be given a treatment with is used as the carbonaceous absorbent ingredivarious organic or inorganiccompounds, such 50 ent, a cereal straw, and particularly a wheat as the compounds employed in explosive compositions themselves, for example, sodium nitrate, ammonium nitrate, etc., before being utilized in the preparation of the explosive compositions.

While nitroglycerin is particularly referred to above in illustrating the types of explosives with which the present invention is concerned, other known substitutes and equivalents of the nitroglycerin may be employed in lieu thereof, or in combination therewith, such as the nitrated sugar-glycerin solutions, nitrated mixtures of glycerin and polymerized glycerin, glycol, and similar compositions.

In the examples given below illustrating the invention, the substitute or equivalent materials referred to above, or other known substitute or equivalent materials may be used in lieu ofthose specified in the particularcompositions set forth. In addition, in preparing particular types of explosives, some of the stated ingredients may be omitted in accordance with well-recognized practice, or other additional ingredients may be in cluded. These matters are within the skill of those in the art.

The following examples illustrate compositions embodying the present invention.

I Percent Nitroglycorin a; 15 Inso board sawdust-i"; 18 Sodium nitrate l5 Ammonium"nitrate 51 Chalk '1 II Per cent Nitroglycerin 12 Inso board sawdust 11 Sodium nitrate 10 Ammonium nitrate 66 Chalk 1 III Percent Nitroglycerin l0 Inso board sawdustl1 Ammonium nitrate 76 Chalk 1 Salt (common) 2 The first composition given above yields an explosive having a cartridge count of 195- 205, l by 8 cartridges per 50 pounds of explosive, Example II a cartridge count of 180-185, and Example III a cartridge count of about 160. i

As illustrated in the examples given above, the proportions of the several ingredients may be varied, and also as noted in the discussions given prior to the examples, some of the ingredients such as the sodium nitrate may be omitted from the composition, or this and other ingredients may be substituted by the recognized equivalents in the art.

plosive ingredient and a comminuted cereal straw. g

2. A nitroglycerin type explosive containing a comminuted cereal straw as the absorbent. I

3. A dope for dynamite containing an explosive ingredient and a comminuted Wheat straw.

4. A dope for dynamite containing a com minuted wheat straw as the absorbent.

5. An explosive composition containing a normally liquid explosive, ammonium nitrate and a comminuted cereal straw.

6. An explosive composition containing a normally liquid explosive, ammonium nitrate and comminuted wheat straw.

7. An explosive composition containing nitroglycerin, ammonium nitrate, sodium nitrate, and a comminuted cereal straw.

8. An explosive composition containing nitroglycerin, ammonium nitrate, sodium nitrate, and comminuted wheat straw.

9. A dope for dynamite containing an explosive ingredient and Inso board sawdust.

10. A nitroglycerin type explosive containing Inso board sawdust.

11. An explosive composition containing nitroglycerin, ammonium nitrate, and Inso board sawdust.

12. An explosive composition containing nitroglycerin, ammonium nitrate, sodium nitrate, andInso board sawdust.

13. A composition for use in a dope for dynamite comprising a comminuted cereal straw carrying an absorbed explosives ingredient.

14. A composition for use in a dope for dynamite comprising Inso board sawdust carryingan absorbed explosives ingredient.

ROBERT SCHLESS.