US768564A - Safety device for oil-well torpedo-shells. - Google Patents

Description

ate. roses i.

Patented August 23, 1904.

UNITED STATES PATENT Orrice.

IYILLIARI ll. ERNST. OF UARIETTA. OHIO. AND ADAM CUILiIlZ. .llt... OF

Tl'lL'SYILLlC. FEXXSYLYAXIA; CLARENGE E. MOSHE OF SAID CUPLER, JR.-. DECBASED.v

R ADMiSiS'l-IQXTOR SAFETY DEVICE FOR OIL-WELL TORPEDO-SHELLS.

SPECIFICATION forming part of Letters Patent No. 768,564, dated August 23, 19 04,

Application filed November 13, 1902. Serial No. 131,201. (No modal.)

deviee for oil-well torpedo-shells: and it- (3011- sists in providing the casing of the said shells with annular rubber rings, thereby prcvent mg a metallic contact between the casingot' the sell and the casing of the torpedo, as will be fully described hereinafter.

V. hen it is necessary thatan oil-well should be torpedoe'd, from twenty totwo hundred quart of nitroglycerii'i in one or several shells is used. the said shell being simply a cylindrical receptacle several feet in length and varying in diameter from three to six inches. some of said shells when loaded weighing one hundred pounds. Owingto the dangerous nature of the explosive used, accidents often happen when lowering t-hese shells into the "line X X of Fig. 3.

" These cushions are formed from soft rubber,

well. due to friction, vibration, leakage of the shell, &c., and'such accidents often repiece of soft rubber, as shown at 5', Figs. 1

suit in the loss of life or the loss of the well by reason of the explosion of the torpedo at an 5 undesired point.

These oil-wells range from several hundred feet to three thousand, and 1 contact between the shell of the said torpedo and the walls of the casing 6, thereby prein many cases the casing extends downward two thousand fcehfand as it is necessary to lower each individual shell by means of a rope it is obvious that if not done with extreme care the friction due to its rapid downward movement, the rotary motion given by the said rope, and the vibration of the shell all combine to cause premature explos ons.

Should one of the shells leak and leave a few drops of the fluid upon the side walls of the casing, the following shell may by its vibration or friction explode the said drop, and it is obvious that the shell passing will also explode, thereby destroying the well.

By preventing the metallic shell of the torpedo from contact with the metal casing of the well by means of suitably-arnmged cash 59 ions formed of soft rubber all such accidents above mentioned will be avoided.

In the accompanying drawings, Figure 1 is a sectional elevation of a portion of an oilwcll tubing, showing the torpedo passing 5 down, the saidt 1pcdo being provided with cushions in accordance with my invention. Fig.- 2 is an enlarged section showing the upper portion of the shell and manner of attaching the cushion thereto. Fig. 3 is a similar view of the lower portion of the shell. Fig. 4 a sectional plan view taken on the Fig. 5 is a sectional view of a portion of the shelhshowing a modilied form of the cushion. 7

To construct a torpedo-shell in accordance with ourinventimnwe form from sheet metal a cylindrical casing or shell 1 ot' a suitable diameter and length and provide the same with a conical point 8, a bail 2, and an inverted perforated cap 4 at the top.. Arranged at points near the top and bottom of the shell are circumferential rings or flanges 9 for the purpose of confining cushions 5 therein.

either in theform of an annular pneumatic tube, as indicated by the ligure 5, or a solid and 5.

A torpedo-shell fitted with the abovo-de- 8o scribed cushions will prevent any metallic venting premature explosions.

Various slight modifications and changes 5 may be made in the details of construction without departing from the spirit of the invention. r 1

Having thus described our invention, what we claim, and desire to secure by Letters Pat.- go eat, is-

1. A torpedo of the type set forth, comprising a shell, spacedapart flanges upon the opposite ends of the shell, and a cushioning means eitpansively held between said flanges 95 and having its interior surface engaging the mezms. v

A torpedo uf the type set forth r-0mpri-ing a shell, spaced-apart flangcszu-ranged aeent the opposite ends of the shell. an annmm' pneumatic tuben 'mnge-Ll about the shell am} engaged by said flanges. said tube being li-iz'iilKKl against longitudinal movement by sxeiii flanges. and being in frictional engagement with said flanges and that portion of the 552-513 between said flanges.

11011 throughout. flanges preventing lemginulimii movement uf said cushioningi signmi mar names in the presence of two I scribing witnesws.

ViIn-ss'es for RV. H. Ernst:

PETER J. SL'LT, C. B. M1151).

\Vimesses far Adm n Cupler Jr R- E. Dxcmxsox, J. J. HARVEY.

In teszimeny whereof we have here w. n. ERS'ST. ADAM (JUPLER, JR

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