US840992A - Safety venting attachment for receptacles. - Google Patents

Description

PATENTED JAN. 8, 1907.

. J. OOHN. SAFETY VENTING ATTACHMENT FOR REGEPTAOLES.

avwewtoz I APPLICATION FILED APR.13. 1906.

witqaooaa tional elevation of a s'rarns JAGOE UOHN, @F L onnon, ENGLAND.

SAFETY liENTli lG FQFR QEGEPTAQLES.

No. ceases.

Specification of Letters Patent.

Patented. Jan. 8, 190?.

lipplinationfiled April 13. 1906. Serial No. 311.486-

To (tit uutom it may concern.-

Be it known that 1, Jason Conn, a subject of the German Emperor, residing at 19 Ashchurch Grove, Shepherds Bush, in the county of London, England, have'invented certain new and useful improvements in and Relating to Safety Venting Attachments for Receptacles and I do hereby declare-thefOllowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to means for venting casks, cans, and other vessels in such a way that the accidental explosion of their liquid contents when of an inflammable nature-is eliiciently prevented.

The apparatus forming the subject-matter of the invention may be so constructed that when desirable it can be easily withdrawn and securely replaced, while at the same time ample provision is made for the I escape of accumulated gases and when necessary for the passage of air to facilitate filling and emptying the vessel;

The apparatus consists, essentially, of a cylinder of wire-gauze preferably protected internally and externally by cylinders of per-.

forated metal and so mounted that it can be readily attached to an opening in the vessel say the bung-hole in the case of a cask.

In order that my said invention may be u'nderstood, I will now. proceed. to describe the same with reference to the drawings accompanying this specification, which show various forms of apparatus constructed accord ing to the invention and methods of applyingsame to various vessels.

Figure 1 is a sectional elevation of the apparatus as applied to a hole in a vessel, such as the bung-holeof a cask, a manhole, or a hand-hole of a tank. Fig. 2 is a plan of Fig. 1 with the cap removed. Fi 3 .shows secmodified orm of the apparatus hereinafter described. 'm

The same letters and numerals of reference are employed to denote the same partsv win all the views.

a is a cylinder of wire-gauze of suitable mesh. 1) and c' are perforated metal cylinders. These cylinders are provided at thebottom with bases or ends corresponding in mesh or perforation, as the case may be, to

"the cylinders themselves. These bases may.

be of concave, as shown, or of convexform or of'other suitable shape. That part of the wall of the containing vessel in the immediate neighborhood of the bases of the cylinders is designed insuch a manner that it will,

fit against'the base of the outer cylinder. The cylinders are soldered-or suitably fastened to the lower part of a tube (1. This tube d is provided on its upper inside edge with bayonet-slots e, or other means may be provided for the insertion of a key, key-wire, or fingertips. The tube d is alsoheveled to form a counter, the lower parts of which are furnished with a series of projections or bosses f to pass under and engage with a correspondingnumber of bosses h, projecting from the beveled or countersunk edge of another metal tube g, forming a seat for the counter d.

Air-vents are provided between the parts i d g h, as will be seen from comparing Figs.

1 and 2.

The tube 9 is' also provided with a flange j for attachment by screws or other suitable means to the wall of a vessel to contain infiammableliquid A cap 7c screws onto the tube 9 and is provided with a safety-vent and plug Z, which is secured to its seat by means of soft solder at a melting-point suited to the boiling-point of theliquid contents." Should the contentsof a vessel fitted with the be- 'forementi0ned device become overheated,

the soft solder would melt and release the safety-plug, which would fly out, and thus open a vent for the accumulated gases, and

should any fiamereach the vent only that portion of the liquid in the cylinder would be "i nited, as the flame would be unable to pass t 'ough the gauze. r

Referring to Fig. 3, which shows a modification of the device, in which the plug provided with soft solder is dispensed with, the caplc is provided with a conical or beveled hole. v is a tube, which is provided with a beveled or conical edge corresponding with the conical hole in the cap 7c. The lower end of this tube '0 is also provided with a conical hole. to is a rod carrying a valve at, which fits in the conical hole in the tube '0 as a seating. 3 is a sliding guide-piece which slides in the tube '0, and 2 is a fixed guidepiece fixed in the said tube 0 and through which the rod 'w passes. Both the guide pieces 3 and 2 are made so that air can pass them. For instance, they may be made with acentral ring, through which. the rod '0 passes, three or more arms 5. In the case of the lower guide-piece these arms are fixed to These rings are provided with IIO ' the inside of the tube while in the case of the upper movable guide-piece the arms 5 p and the ring carried thereby slide inside the tube 1:. Between the sliding guide-piece 3 and the fixed guide-piece 2a helical spring 6 is placed in compression, 4 is a nut screwing onto the top of the rod to, so as to hold the sliding guide p'iece 3 in position, and for regulating the pressure of the spring. A. space is left between the outer wall of the tube and the inner wall of the tube d. The

inner tube '0 may extend, nearly to the bot-' tom of the cylinders a b c in the case of a small vessel, or where the apparatus is applied to a doe tank the tube 17, While extending to a sufiioient depth, may be oonsiderably shorter than the tubes a b c.

' The action of this formof the device is as follows: When gases accumulate within the tank or vessel, the tube 4), which is simply held in its position in the conical hole in the cap 70 by gravity, is raised. from itsseating the pressure is reduced. Should the gases and the inflammable gases can escape until become fired, the flame will be cut oil and extinguished as soon as the tube 0 falls back upon its seating, and the flame will inany case be prevented by the gauze cylinder from passing to the body of the inflammable liqilid, as in the form shown in Figs. 1 and 2. W on it is required to admit air to the cask or the like for emptying, the partial vacuum 1 formed by the egress of the liquid draws down the valve cand air passes downaround the rodwand between the tube 1) and the valve :12, and thus enters the cash or other vessel.

What ll claim, and desire to secure by Let ters Patent of the United States of America,

, ycylinder adapted to be projected within the vessel, an automatic valve'arranged within 1. A safet device for vesselsflcontaining inflammable, iquids comprising aperforate cylinder adapted to be projected within the vessel, a gas-outlet valve .and an. air-inlet valve within said cylinder, substantially as,

described. 1 1 2, A safety device for vessels containinginfla'mmable iquids comprising a perforate 4. A safety device for vessels containing inflammable liquids comprising a perforated cylinder adapted to be projected within the vessel, an inlet-valve in said'cyli'nder nor mally seated by gravity and adapted to be opened. by the accumulatin gases, and a spring-controlled air-inlet va've within said gas-valve, substantially as described.

5. A safety device for lvessels containing inflammable liquids comprising a gauze cylinder adapted to be projected within the vessel, perforated protecting layers. arranged on the inside and outside'o-f said cylinder, a gas outlet valvev and an air-inlet valve within said cylinder, substantially as described.

6. A safety device for vessels containing inflammable liquids comprising a perforated cylinder adapted to b'e'projected'within the vessel, a hollow cylindrical valve in. said cyl-- inder having a beveled top and adapted to be opened by theaccnmulatinp %ases and an air-inlet valve located in the low part of said gas-valve, substantially as described.

7. A safety devioe for vessels, containing inflammable liquids comprising a perforated cylinder adapted to be projected within the vessel, a hollow cylindrical valve in said I cylinder normally seated by gravity and adapted to be opened by the accumulating ases, and a sprin -contro1led air-inlet valve coated in the 1101 ow part of said gas-valve, substantially as described.

, ,In testimony whereof I affix my signature in presence of two witnesses. v v JACOB COHN.

Witnesses:

Y A E, Violin,

A, \NUTTING.

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