US635379A - Valved can. - Google Patents

Description

No. 635,379. Patenfedotnm, |899.

w. H. aoLnme.

VALVED GAN.

(Appnmimea Ap; a, lass.)-

(No Modal.)v

v`UNiri-cn STA'rns Prion.

VILLIAM Il. GOLDING, OF BOSTON, llzlvASSAOl'lUSF/FTS.

vALv-ED CAN.

SPECIFICATION forming part of Letters Patent No. 635,379, dated October 24, 1899. Application filed April 3, 1899.` vSerial No. 711,591. llo model.)

To all wwnt it Wray concern:

the following is a specification ,reference being had therein to the accompanying drawings. 1

- This invention relates to a valved can, and

particularly to a safety-can for the storage of volatile liquids, such as benzin.

The invention has for its object to provide a structure in which the valve-seat will be at the upper portion of the casing andabove the valve, whereby when 'the flow of liquid is stopped very little of the same will be held above the valve-seat.

A further object of the invention is to pro-, vide an adjustable bearing plate for the spring by which the valve isiautomatically closed, whereby this plate can be regulated to increase or diminish the tension of said' spring against the valve.

A further object 1s to provlde an improved construction'of valve-stem to guide the valve in its movement and to prevent closing of the outlet when the cap is depressed to open the valve. l

Other objects and advantages of the invention will hereinafter appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, Figure l is a perspective showing manner of using can. Fig. 2 is an enlarged vertical section. Fig. 3 is a crosssection on the line 3 3 of Fig. 2. Fig. 4 is a bottom plan of the valve, and Fig. 5 is a detail perspective of the valve-stem and parts carried thereby.

Like letters of reference indicate like parts throughout the several figures of Ithe drawings.

In the drawings the letter A designates a can, which may be of any suitable material and construction, although I have found it very desirable to construct this can of steel, particularly when it is adapted to contain a volatile liquid liable to materially or dangerously expand in the presence of a slight increase in temperature. In the present instance l have illustrated the can as having a round upper portion terminating in a neck A', to which the Valve-casing B may be secured by means of threads B/ upon its outer face. As above stated, the particular form of the can is not material nor the method of applying the valve-casing, although it is desirable for the purpose of cleansing the can and reiillin g the same to provide a removable valvecasing at the neck or upper portion. This valve-casing B is provided at its upper portion with a valve-seat B2 and at its lower portion is provided with a screw-thread B3 upon the inner face or wall thereof. The exterior of the lcasing is provided with any suit-able means for turning the same-such, for instance, as a milled flange B4, by which the casing may be readily grasped for the purpose of removing the same from the can. Within this casing B a valve-stem C is provided, having at its upper end a cap or head C', and suitable threads O2 at its lower end. Immediately beneath the cap C' shoulders C3 are provided, which limit the downward movement of the valve-stem, and adjacent to these shoulders are guiding projections O4. Both the shoulders and projections may be constructed in any desired manner, although a very convenient form is illustrated in which thesame are of angular conformation, said angles being of dierent diameters, by which the shoulders Oare provided above the guiding-surfaces C4 and adapted in the downward movement of the stem to contact with the top of the casing B. This stem is provided with a valve-washer D, of suitable material, and beneath the same, if desired, a metallic washer D may be placed, against which the spring D2 will bear. This spring bears at its lower portion against an adjustable plate E, which may be of any preferred construction, although the form shown, having the angular sides E', has been found desirable, as it permits the passage of the liquid around the edges of the bearing-plate. This same result may be accomplished by other means, as will be evident, and the plate is provided with a central aperture E2, through which the valvestem C will pass. Beneath the plate E a holding-nut D3 is applied to prevent accidental displacement of the parts. It will be observed that the shorter sides E3 of the plate E rest in the threads B3, and by turning this plate within said threads the same can he adjusted toward the valve-seat B2, thus placing the spring Dand the washer I) under greater tension, while a reverse movement of the plate will relieve the tension upon the valve and permit the cap-guard to be operated by a very slight pressure. The holding-nut D3 merely prevents the removal of the valvestem and does not affect the adjustment of the tension to the valve.

The can may be used in any desired manner by pressure applied to the cap-guard C', which opens the valve; butadesirablemethod of using the can is illust-rated in Fig. 1,\vherein the holder may insert the thumb through the handle A2 and press the cap-guard with the fingers. By this method only one hand is required to operate the can. Furthermore, it will be seen that the self-closing valve prevents the evaporation of any volatile liquid contained within the can and likewise any waste, which is always liable to occur should the can be overturned, while the pressure of any liquid within the can bears against the under surface of the valve, holding the same firm to its seat and preventing the escape of gases liable to combustion if a llame be carried near the can. This accidental combustion is further prevented by the construction of the valve-seat at the upper portion of the ease, so that no pocket is formed which can hold any material quantity of a volatile liquid, such as would ignite and aifect the main contentsofthecan. Theparticularconstruction of valve-stein provides a guide for the reciproeation thereof, a stop to limit the inward movement of such stem, and a guardcap which prevents the valve from injury in rough handling and forms a surface to which pressure is applied.

It will be obvious that changes may be made in the construction and configuration of the details of the features of the valve and can without departing from the spirit of the in-l vention as defined by the appended claims.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A valve comprising a casing having an outlet-aperture provided with a seat, a Valvestem in said aperture having a cap at one end, a lug beneath said cap adapted to beai' against the top of the easing, a guide beneath said lug terminating in a shoulder, a valve-washer carried by said stem upon said shoulder, a spring beneath said washer, and means foi' holding said spring under tension; substantially as specified.

2. In a valve, a casing provided with a seat at its outlet-aperture in the upper portion and an interior screw-thread upon the inner face of the lower portion, a valve-stem located in said aperture and provided with a head and aguide beneath the same terminating in a shoulder, a valve-washer carried by said stem and adapted to contact with said shoulder and seat, a spring beneath said washer, and an adjustable retaining-plate having its edge engaging with a screw-thread upon said casing; substantially as specified.

In a valve, a casing provided with a seat atits outlet-aperture in the upper portion and -interior screw-threads at its lower portion, a

valvestem located in said aperture and provided at one end with a cap, a stop-lug and a guide-ilange, a valve-washer located upon said stem, a spring beneath said washer, an adjustable tension-plate beneath said spring having its edge engaging a thread upon the surface of the casing, and a holding-nut applied at the lower end of said stem; substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. GOLDING. lVitnesses:

WILLIAM G. Evnar, LoUisn V. BARRY.

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