US1029287A

US1029287A - Detonating composition.

Info

Publication number: US1029287A
Application number: US66688911A
Authority: US
Inventors: Ernest Goodwin
Original assignee: ELEY BROTHERS Ltd
Current assignee: ELEY BROTHERS Ltd
Priority date: 1911-12-20
Filing date: 1911-12-20
Publication date: 1912-06-11
Anticipated expiration: 1929-06-11

Description

UNITED STATES PATENT OFFICE.

nausea" ,Goonwnr; or summon runn nounou, ENGLAND. ASSIGNOR 'IO ELEY saomnns, ;nmrren, or snmonron, .LounoN, ENGLAND.

nnrommme comrosrrron.

KuDrawing.

- su1fur,-mealed powder, .etc .are objectionabletmsseveralrespeots. tlhuson firin -,a rifle I (in articular-any small rimz-fire ri'fle of .QQdncli-calibQnio whiehthis invention Especially-applicable). and then opening the breech to extract the fired cartridge e case and :to introduce tenet-her nartridge, the shooter is frequently seriously incomw-W v ienced by the ofiens-ive tomes which have been ,ioumed. by the.v combustion of the explosive contentsof the cartridge, such contents of the. oartri dge asis well known beingcomposed of .-a Small charge of detonating composition -.-which was contsinediin a perevssiehlcepeef Q iI -Jtheriiniofl fliem-iire Y cartridge, and the larger charge of pro el-lent nowder j which (was ignited by. the ames from the e tplosion of the ldetonating comp iti s with. oriwit-houhthe assistance of a. layer of black or smokeless powder located between the .detonating. composition and the propeL lent ,powder. Besides this, .the residues formedi by thecombustion of the. explosive 40 contents s 1e yv;wn9nessl) .etrei etiesh of, cartridgesiactiug 1n. conjunctionlwith, at

mospheric, moisture, produce -a very considenable rustingefl'fect due tithe-chemical action. upon. the. interior surface of the rifle barrel. Moreover in cart-ridges asatpresent" constructed, it is commonly necessary to 9111- ploy allay-er oflblackfor"smokelefi powder to provide s sufi'icient volume of suitable flame to ignite the propelleut powder in theflesiredmanner without casualties, such for instance as'bursts in the rims of the cartridgc'asezlai'itt'lT-jd iii oriinitions of ordinary kinds. igui so." P '1' (v .pressure and cannot therefore be strongly compressed;

" and rthereby are -d-tfiicult .-.and dangerous end are not sufiicient-iysem in manufactm'e,

'-S,pecificatio n ofletters Patent. Application filed Deceinhe1:,20.- 911. user-mm" 668,889.

Patented Juno 1] 191 2.

sitirezto the striker of the rifle: also lmt-ha small quantity of ordinary detonatiug; (011% position can be located in a rim of a rim-tire cartridge, because bursts of the rim and head are'tobe feared by reason of the violence of detonation of such compositions. Further, ordinary detonating compositions explode with a loudreport.

In the manufacture of dot-ousting com positions it has been pro osed to employ in one instance aimixt ure o. fulminate, of mercur-y, gun cotton -.ancl,-potassium chlorate; in another instance, n plastic explosive con sist-ingiof' :fulmiuate of mercury incorporated into a paste of nitroglycerin-and a oellulose'nitrate (the mixture being subsequently deprived of its remaining solvent) with or without the addition of .a deterring V agent such as 'nitrobenzene. or a nitrousph' thalene; and-in a third instance it haszbeen proposed to-replace: thew-hole or partof the tulm-inate of mercury by disruptive nitro compounds such ,as pioric acid mom- ,dlanzl trinitrotoluenes, trirnitrocresol :and its salts,- the nitreted naphthalenes, and similar. substances.

Nowthe, object of the present invehtiongs to provide a detonating icomposition 111 which-the before stated disadvantages. an difficultiesare wholly or in great. part overome and obviated-by theemployment of detonating compositions composedwaccording to this invention-ms hereafter ,de'' y scribed. I

{The composition or com-.ositionsiaccord- 9. ing to this invention differ! romthoseofthe usuahkinds in the following points 1. In the replacement of the whole or .ipnrtiof the, otassium-chloratei comm0ulv'--- employed in t 16 usual detonating compoun s 9- by a mir'ztureof trinit-rotolueneJand a peroxid,-pret'erablythat ofbag'i n. I preferably employ ,tri-nitrotohene which melts at 81 0., as being best euitedto the compositiom-but, instead orias asu-bstitute thereft'or, I might employ, in carrying out this invention, trin-itroto uenes of lower melting point, i or. othernitrotoluenes, cellulose nitrates 'picric-acid. nitroresols, nitro xylenes, ,nitronapl'ithalenes .or similar-known s'ubsti-..

trinitrotoluene a s; nfore'saidtobehest, suited .for. the'piirpose'. It is not proposed according to this invention 1 to --replace 'the -=:-fulm' m te-pf mercury, either wholly or in part, 119

.tutes-t'or t-riuitrotoluene' althoughl l .c,onsider" by the barium peroxid and trinit rotoluene, but simply to replace the whole or part of the potassium chlorate. The compositions according to this inventionma y in fact contain a larger perce tage of iuh inate of mercury than cartl i .no kinds which contain tmtassuun chlorate as commonly used. V

' 2. In the use of a mud of tulmiuate of mercury,-in the aforesaid composition according to this invention, prepared by precipitation from a solution of one of its double salts-such as those of potassium c v-- anid or oFpyridin, by which means is obtained a mud of small crystals of uniform size. I

Methods of precipitation of fulminat of mercury are already known and therefore do not require description in this specification.

In order that the invention may be more fully understood, I. will 'ive merely by way of example a more detai ed manufact ore of the detonating composition according to this invention.

3 parts of wet fulminate of mercury, in its precipitated state containing about 22% of water (orthe c entwein'tof dry fulminate of mercury, namely about 2.4 parts) are thoroughly incorporated with two parts of a powdered mixture of v.16

parts ofbarium peroxid, 7 parts of stibnite and 4% parts of' trinit-rotoluene. A charge of about 0.9 grain ofthis composition is introduced into the rim of a .22 rim-fire cartridge case, dried, and submitted to a strong pressure in order to raise to the desired degree the sensitiveness ofthe cartridge to the rifle-strikeri. The charge of propellent powder is then introduced and the cartridge loaded in the usual manner.

The compositions according to this invention (which have been proved to be highly stable) may also be made by mixing the dry .constituents by any known process; and the percentage of the various parts can be altered to suit the kind of ignition required.

By the em )loymentof denotating compositions accoring to this invention and such as have been specified. a smaller quantity of less offensive tu tl s fire rrn i on firing, so that especially on a closed range the shooter is considerably benefited.

The rusting effect due to the action on the interior surface of the rifle barrel of the [residues formed by the combustion of the explosive contents acting in conjunction with the atmospheric moisture as before stated, is very considerably decreased. Further, the necessity for the use of the intermediate layer oif' black or smokeless powder in the cartridge is removed.

The detonating composition according ;toj'

the present invention, whether in mouse dry powder. or'in ww'ct paste, is much lesssensr tive to friction or percussion than those of the ordinary kinds, and can be safely subjected to high pressure, to cause the composafer formanufacturing uses, and yet enablea cartridge to be produced which is more easily fired by a weak rifle-striker. The said 'detonating composition described can also be used in larger quantities without damage on firing to the rim and head of the cartridge, because the total and local violence of the gas pressure produced in the riln'of the cartridge case is considerably decreased and the combustion of the propellcnt powder is moreover facilitated by the gr ater body of flame which is given off in the explosion of the improved (amposition, The noise of the explosion of the cartridge in which the improved composition is em ployed is decreased. the said C(Jl'iiDt'lSilltHl igniting with a faint report and a largo flame. I

What I claim as my invention and desire to secure by Letters Patent 1. The herein-described dctouating composition comprising a lulminate of mercury, a peroxid and trinitrotoluene.

2. The herein-described detomiting composition comprising a fuhninate of mercury, barium peroxid and a trinitrotoh'tcnc.

3. The herein-described detonating (omposition comprising finely divided fi-ilmimuo of mercury, a peroxid and trinitrohdunno.

4. The herein describcd detonuting com position comprising finely divided t'ulminato of mercury, barium peroxid and triuitrotoluene.

5. The herein-described detonating composition comprising a fulminate of mercury. barium pero'xid. stibnite and trinitrotoluenc.

6. The herein-described detonating composition comprising about 2.4. parts of .t'uhni- In witness whereof I have lu-rculuo sol my hand in the presence of two \vitue-.- ERNEST GOODW Witnesses:

Tnoams Wannmn Rooms.

' lVInL'IASrAQ 'MAiis'nALL.

Copies '01 this patent may be obtained for five cents each, by addressing the Commissioner of Patents.