US1412948A - Medicine dropper - Google Patents

Description

Mar rric EDWARD C. LUEDTXE, OE LABOR/IE, INDIANA.

MEDICINE DRO?PER.

Specification of Letters Patent.

Application filed December 20, 1920. Serial No. 431,816.

T o all'whom it may concern Be it known that I, EDWARD C. Lnnn'rnn, a citizen of the United States, residing at Laporte, in the county 01"- Laporte and State 01 Indiana, have invented a certain new and useful Improvement in Medicine Droppers, of which the following is a specification.

This invention relates to a medicine dropper, and is designed for use where it is necessary or desirable to discharge fluids from their container in small quantities for example in drops. It is particularly adapted for use as an eye dropper. One object of this invention is to produce an eye dropper which may be easily used and which will not accidentally discharge too great a quantity of the liquid contained in it at any given time.

This invention is illustrated in the accompanying drawings, wherein,

Figure 1 is a side elevation of the device complete on a magnified scale;

Figure 2 is a vertical section device much enlarged.

Like parts are indicated by like characters throughout.

A is a supporting casing through the which may be made of metal, fibre or other suitable material. It is narrowed at its bottom as at A and has the small opening A It is closed at the top by a cap A which may be screw threaded upon the body portion A or sooured thereon in any suitable manner. The cap A is perforated at A for the admission of the plunger A The plunger A? has at its upper end the enlarged portion A. and at its lower end the cup shaped enlargement A which contacts and supports the liquid container. A is a slot in the side of the casing through which the operator may see the quantity of liquid which is in the container.

B is a liquid container which may be of any suitable form. As here illustrated, it is in the form of a bottle having the narrowed portion 13' toward its lower end and terminates in the perforated point B". The point B is normally closed by a small rubber cap B although, it might of course. be closed in any other suitable manner. C is a ring adapted to surround the lower portion of the bottle and to support it. Fastened to the ring C are a plurality of springs C; these are fastened at the points C C and may be secured there in any suitable manner. In the form here shown they are mounted on rivets which are positioned in the side of the casing A. The tension-0t the springs C is sufficient to hold the bottle up against the boss D on the inside of the ca A y Although I have shown in my invention an operative structure, still it will be obvious that many changes both in form, shape and arangement oi parts may be made without departing from the spirit of my invention and I wish therefore that my showing be taken as in a sense diagrammatic.

The use and operation of this invention are as follows:

The bottle is normally held up against the closure of the casing by means of the springs. When it is desired to use the bottle the rubber cap is removed and the operator takes the dropper in his hand and places his thumb upon the bottle and the upper end of the plunger. He then depresses the plunger and thus, oi course, causes the bottle to move downward; when the bottle strikes the contracted portion of the casing, its movement is arrested but the liquid within the bottle, by reason of its inertia tends to continue its movement and thus a quantity of liquid, "for example, a drop. is 't'orced out of the opening of the bottle. The pressure is then removed from the bottom on the plunger and the bottle is restored to its original position. lVhereupon. the operation may be repeated indefinitely. The quantity or" liquid discharged at any given operation, is, of course, varied by the size oi the device and in particularly by the size f the opening I claim- 1. In a liquid dispenser a casing, an opening in said casing, a liquid container mounted and movably held within said casing,

means adapted to cause said container to move partially through said perforation.

2. In a liquid dispenser a casing, an opening in said casing, a liquid container mounted and movably held within said casing, means adapted to cause said container to move partially through said perforation for abruptly stopping said motion.

3. In a liquid dispenser a liquid container supporting means surrounding said container, said container yieldingly held withsaid supporting means,

means for moving said Container with relation to said supporting means and means for abruptly stopping the motion of said container.

4. In a liquid dispenser a casing perforated at one end, a liquid container mounted and yieldingly held Within said casing, means adapted to cause said container to move partially through said perforation, said means including a plunger, and means for stopping said motion.

5. In a liquid dispenser a casing perforated at one end, a liquid container mounted and yieldingly held Within said casing, means adapted to cause said container to move partially through said perforation, said means including a plunger and means for stopping said motion, and a longitudinal slit in said casing.

6. In a liquid dispenser, a casing, perforated at one end and having a removable closure at the other, a liquid container mounted Within said casing, spring supporting means adapted normally to hold said container against movement, a plunger adapted to cause movement of said eontainer in opposition to said spring means and means for abruptly stopping said motion.

7. In a liquid dispenser, a casimg perforated at one end and having a removable closure at the other, a liquid container mounted Within said casing, spring supporting means adapted normally to hold said container against movement, a plunger adapted to cause movement of said container in opposition to said spring means and means for abruptly stopping said motion, and a longitudinal slit in said casing.

Signed at Laporte, county of Laporte and State of Indiana, this 17th day of: December,

EDWARD C. LUEDTKE

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