US759168A - Jar-closure. - Google Patents

Description

PATENI'ED MAY 3, 1904,

w. ,B. PENN. JAR CLOSURE.

APPLICATION FILED JUNE 10, 1903.

Patented May 3, 1904.

WILLIAM B.

nNN, OF \VASIHNG'IOX, PENNSYLVANIA.

JAR-CLOSURE.

SPECIFICATION forming part of Letters Patent No. 759,168, dated May 3, 1904-,

Application filed June 10, 1903- Serial No. 160,830. No model.)

To 11]] who) 1'/- may run/writ:

Be it known that I. Wumiui B. Fess, a citizen of the Unit d States, residing at \Vas'nington, in the State of Pennsylvania. have invented certain new and useful improvements in Jul-Closures, of which the following is'a specification.

My invention relates to removable means for effecting hermetical or liquid-tight closurcsof jars, hott h-s, or other like receptacles. The objects of my invention are. to provide a closure which rcadily adjustable to its place and easily remorahlc: to provide a means by which the packing" is compressed by reason of the shape of the parts and may he graduated to anydesircd pressure; to providea cap closure in which th capis not brought in contact with any hard material and therefore may be made of glass without. the necessity of great accuracy in its form; to provide a packing ring which is lirmly h ld in place and yet may be easily removed; to provide a closure of which all the parts are open and removable so as to be easily wash d, and yet when in place ar not dependent upon mere friction to hold them in ltihiiiflfl. The. foregoing objects, together with other advantages which will hereinafter appear. l'at jain by the construction and assemblag of parts as illustrated in preferred forms in the accompany iug drawings, wherein Figure] is a vertical central section through my closing device. n a jar m-ck shown in elevation.

Figures 2, 3 and i are perspective viewsof the cap. the packing ring, and the jar neck, respectively, shown s parat ly.

Figure 5 shows a conv nient mode of mak-' ing rubber rings for the packing, by slicing them off of a tube molded for the purpose.

Figure (3 represents a central section ot'a jar embodying a modification of my device in which {hi-situation f the thr ads is inverted, makin, a groove in th jar neck instead of a projecting" thread.

For simplicity and ch apni-ss the closure is Hlillll'flf two parts, a cap and pat-kin". In

order to avoid the uscol' m talli parts 1 pre- 5 fer to use a glas cap and for convenience l arrange it to s"r w upon the jar. sary, however, to avoid contact of the two it. i:- n--cesi readily taken apart and cleaned, as they preparts of glass, because it would be diilicult to lit them nicely together and there is danger of br akage if one part grinds upon the other. Again, means for compressing the packingis necessary to get a good seal. the efore is made by forming both the outer surface of the neck of the cssel n, and the inner surface of t-hecap ll, of sloping or conical form, and providing each surface with threads e, y, thereon, which are thus differential in relation, and so gradually reduc the space between them as the cap I; is screwed on. Between the neck and cap is preferably placed a rubber ring ot' the proper consistency, and it is provided with threads as shown, so as to have an independent hold upon each the neck and the cap. it will be seen that the ring (I may either turn on the neck and more with the cap, or turn in the capaud remain stationary on tlw neck, or turn on both at once; and in any case the turning of the threads compresses the rubber ring and makes an extremely tight seal, not depending on friction to keep it in place.

Upon unscrewing the cap, a very little turn removes it, and the rubber rin; then remains attached to one or the other of the parts. The cap is very readily put in place and the fact that either cap or ring may turn, imlili'erently, prc"e.'its sticking and renders any adjustnn-nt unnecessary. The form of thread gives a verlv powerful pressi l'r and a secure locking in plane. the glass partsdo not, come into contact, and while the contents of the jar only meet the packing on a thin edge, the latter pres nts a wide thickness between the inside and any port of escape. in some cases it may be convenient to place the male thread on the cap and the female thread in the neck, asshown in Figure 6(r' and 1/), and in this instauceof course, the positions of the threads in the wall of the ring 1/ are inverted to correspond. .\v series of ribs f, may be used on the cap for aid in turning it. The rings 1/ may he made in any desired manner, either molded conical in form or joinedup from a strip, or sliced from a tube /I, as shown in Figure v The device shown is not only very cheap to make, but it will be sewn that the part car. be

The closure sent n0 undercut surfaces to catch dirt. The common dillieulty of erumpling or bunching, in the use of rubber packing rings, is entirely avoided bytbe peculiar form of ring. as well as by the provision for free turning of either of the part in screwing to place. Other advantages will readily occur to users of such devices.

Having thus described my invention and 3 illu trated its use, what I claim, and desire to secure by Letters Patent. is the following:

1. A jar closure conmri ing in combination a revolvable packing ring provided with means for holding it upon the jar neck and provided upon its outside with threads arranged upon a sloping surface, and a cap provided with cooperating threads upon its interior, also arranged upon a conical or sloping surface, substantially as described.

2. The combination with a cap having an interior conical SlllfllCO, a vessel neck harin, a conical exterior surface substantially parallel with the said cap surface, and an elastic ring provided with means for holding it upon said neck and means for holdingit within said cap.

3. The combination with a vessel neck having means for retaining arevolvable ring thereon, of an elastic ring provided with scrcw-thremls on its outer surface arranged upon a conical face, and a cap cooperating with said ring providm with an interior conical face and screw threads to co-operate with said threads on the rin 4. In a jar closure the combination with a threaded neck and threaded cap, of a packing ring comprising a strip of pliable material with screw threads on its exterior and on its interior surfaces, substantially as described.

in a jar closure the combination with a threaded cap and neck, of an elastic ring pro \idcd with both interior and exterior conical surfaces. each provided with difi'erential threads thereon, whereby the ring may more either in or on the threads of the neck and cap to tighten thecontact.

The combination of a jar having a coniral neck. a cap having a conical interior surface, a ring having parallel surfaces inside and outside, both Surface of said ring and of the cap and of the neck being provided with dil i'erential threads. substantially as descx ibed.

i'. Ajar closure comprising a screwtl .readed neck. a screw-thremled cap and a screwthreadcd packing ring between the two.

5. In a jar closure the combination of a coin ical neck having differential threads, an interiorly conical cap having corresponding litt'ercntial threads, and a revolrable screwthreaded elastic packing ring between the cap and neck; substantially as described.

9. A closure for glass ja rs comprising a pee k provided with thrcads a glass cap provided with corresponding thrcads,:1nd a packin'.

between the cap and neck threads, the threads on both said parts being of Varyingdiameter with respect to the center of the neck. whereby the space between the parts. is reduced as the cap is screwed on the neck. substantially MINNIE A. LEoNAnr, ALVAN DORMAN.

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