US2051310A - Bottle neck and closure therefor - Google Patents

Description

Aug. 18, 1936. F. L. MILLARD I BOTTLE NECK AND CLOSURE THEREFOR Filed April 5, 1955 INVENTOR. FRED L. M/LLARD ATToRNjs.

Patented Aug. 18, 1936 UNITED STATES PATENT OFFICE 2,051,310 some NEGK AND CLOSURE THEREFOR m L. Millard, San mm, Calif. Application April 5, 1935, Serial No. 14.834 2 Claims. (01. 215 -31) The present invention relates to improvements in bottle necks and closures therefor and its principal object is to provide a bottle neck and a closure for the, same particularly adapted. to maintain a tight seal for the contents of the bottle and to facilitate the dispensing of a liquid from, thebottle especially in cases in which the liquid is dispensed in minute quantities and in exact amounts as in medicine bottles.

My invention has particular reference to those bottles in which a screw top is used as a closur and one of its objects is toprovide an enlarged contact surface between the neck of the bottle and a washer interposed between the neck and the top for insuring a better seal for the bottle.

A further object of the invention is to provide an annular pouring lip for the bottle neck which allows the liquid to be dispensed without spilling and which causes the liquid upon the termination of the pouring operation to flow back into the bottle instead of'running along the outside thereof.

A further object of the invention is to facilitate the pouring operation by providing an annular groove underneath the pouring lip within which theedge of a spoon or the likemay be accommodated during the pouring operation.

A further object of the invention is to combine the features set forth heretofore so that the groove and the enlarged contact surface for the washer cooperate in defining the pouring lip and in facilitating the pouring operation.

Further and other objects of the invention will appear as the specification proceeds.

The preferred form of my invention is illustrated in the accompanying drawing, in which Fig. 1 shows a vertical section of the upper portion of a bottle and the cap applied thereto;

Fig. 2 an outside view of the bottle neck;

Fig. 3 a vertical section through a slightly modified form of bottle neck and cap, and

Fig. 4 a vertical section through another modified form of bottle neck.

while I have shown only the preferred forms of my invention I wish to have it understood that various changes or modifications may be made within the scope of the claims attached hereto without departing from the spirit of the invention.

Referring to the drawing in detail, the bottle I which may be' of any suitable form and of which only the upper portion is shown, terminates in the neck 2 which latter is provided on the outside or the outer surface with an annular collar 3, a thread-l above the collar, an annular outside of the bottle neck groove 5 above the thread and an annular' ing lip 6 above the groove.

The thread 4 maybe of any suitable form and pitch and is shown in the drawing as comprismuring a spiral slightly in excess of a single turn so 5 that the ends overlap. The thread is spaced from the top-of the bottle neck by the groove and the P uring lip. The groove 5 may be of any desired cross-section and is shown in Fig. 1 as being of angular 10 section, with its upper edge merging into the pouring lip 6. The latter surrounds the entire upper edge ofthe bottle and is rounded in its outer face, and its periphery is substantially in alinement with the base of the thread. The in- 15 side surface of the bottle neck terminates in an inner edge which is tapered as at I and it will be noted that the taper and the upper portion of the groove coact in defining a relatively thin and outwardly flaring rim section leading to the pouring lip.

The cap 8 has a flange 9 sumciently long to pass over the groove and to extend to the collar 3 and is threaded in its lower portion, as shown at ill, for engagement with the thread of the bottle neck. It has a washer ll preferably made of cork or a cork composition and this washer is made to overlie the upper edge of the bottle neck when the cap is screwed home. The washer is in the form of a complete disk and has a central 3o downward extension i2 having a tapered edge l3- fitting the taper of the inner edge of the bottle neck so as to seat thereon. It will be noted that due to this-construction the contact area between the washer and the bottle is increased considierably and the danger of leakage decreases correspondingly. The advantages of my invention will be readily understood from the foregoing description. The tapered seat for the washer makes the bottle leakproof and at the. same time the taper aids in forming the pouring lip and in leading the liquid to the pouring lip when the bottle is tilted. The groove 5 is used to receive the edge of a spoon or other bottle into which the liquid is to be poured and at the same time aids in shaping the pouring lip and prevents liquid from running down the during and immediately after the pouring operation. The lip itself which is partly the product of the taper and the groove but has an independent rounded outer edge causes the liquid to flow evenly and smoothly and guides liquid still adhering to the bottle back into the same after the pouring operation. The eifectof capillary attraction tending to draw 5 \nated altogether.

the liquid along the outside of the bottle is elimi- Fig. 3 shows a slightly modified form insofar as the groove 5' is rounded and the inner edge of the bottle neck is formed with a stepped seat 1' while the-washer is stepped accordingly to fit on the inside of the bottle neck. The view of Fig. 4 shows a further modification, in which the inner edge of the bottle neck is concaved to accommodate a registering wash I claim:

1. A bottle neck having an inner surface, an

annular groove in the outer surface, a pouring lip above the groove, the pouring lip having parallel and horizontal top and bottom faces and a rounded outer edge. and a frusto-conical inner 2. In combination, a bottle neck having an 5 inner surface, an outer surface, an annular groove in the outer surface, a pouring lip above the groove having a horizontal top face, a shaped inner edge leading to the top face and a cap for the bottle neck having means for fastening the 10 same to the neck below the groove and having a washer overlying the top face of the bottle neck and provided with a pre-fornied inner section seated on the shaped inner edge of the bottle neck.

FRED L. MILK-ARD-

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