US1049665A - Detonating fuse. - Google Patents

Description

EMIL BURKARD, OF POTSIDAM, GERMANY, ASSIGNOR T E. I. DU PONT DE NEMOURS POWDER COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF NEW Patented Jan. '7, 1913.

JERSEY.

DETONATING FUSE.

v 1,049,665. Specification of Letters latent.

No Drawing.

To all whom it may concern:

uBe it known that I, EMIL BURKARD, a subject of, the Emperor of Germany, residing at Potsdam, Germany, have invented anew and useful Improvement in Detonating Fuses, of which the following is a full, clear, and exact description.

Igniting tubes have been prepared consisting of a tube charged with trinitrotoluol or trinitrobenzol in liquid state. After the chilling of the nitro body, the tube is drawn to the desired caliber. Fuses are thus produced which when primed with a fulminate of mercury cap detonate with a speed of 5000 to 6000 m. per second. The speed of detonation of a trinitrotoluol fuse is near to 5000 m. while that of a trinitrobenzol fuse is nearer to 6000 111. per second. The trinitrobenzol fuse, as compared with the trinitrotoluol fuse, offers the advantage of a higher speed of detonation, but in the preparation of the former, the difficulty is encountered that to fuse the explosive, it must be heated to a temperature exceeding 120 (3., while trinitrotoluol can be liquefied in a water bath at 90 C.

It is undesirable, from the standpoint of safety, to heat the explosive too high, and

it is of especial advantage to liquefy the explosive in a water bath.

From the standpoint of efficient priming, fuses with a high velocity of detonation are very advantageous, especially when the detonation waves traveling in opposite directions are to be utilized. From this standpoint, particularly fuses with a higher speed of detonation offer greater advantages than those with a lower speed of detonation, sincein this manner the power of initiating detonations which in itself is great is doubled.

From the above it is evident that it is of great advantage to have the explosive used Application filed August 9, 1911.

Serial No. 643,181.

in the fuse combine the advantages mentioned, that is, a high speed of detonation, and to fuse same in a water bath.

Prior to my discovery trinitrotoluol was the most successful fuse explosive. These nit-r0 bodies have a, lower fusing point than trinitrobenz'ol and yet approach closely the velocity of detonation of the trinitrobenzol.

I have discovered nitro bodies which are fusible in a water bath, produce a greater expansion in the Trauzl lead-block than trinitroluol and at the same time possess a high speed of detonation. Such explosives are, for instance trinitrochlorbenzol, tetranitroethylanilin.

Denotated under comparable conditions, the following results were obtained.

, M I Expanl'ision gellotcit-y e ting in t e o e oua- A fuse charged point, lead block, tion,

ccm.,gross. in. sec.

Trinitrotoluol .l 81- 82 3.50 5000 Trinitrochlorbenzol 83 360 6100 Tetranitroethylanilin 96 3910 6200 Trinitrobenzol 121-122" 410 6400 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.