US1524131A - Collapsible tube and the like - Google Patents

Description

c. B. HASKELL COLLAPSIBLE TUBE AND THE LIKE Filed Jan. 4, 1923 Patented Jan. 27, 1925.

UNITED STATES CHARLES B. HASKELL, OF SOUTH PORTLAND, MAINE.

COLLAI'SIBLE TUBE AN D THE LIKE.

Application filed January 4, 1923.- Serial No. 610,688.

To all whom it may concern:

Be it known that I, CHARLES B. HASKELL, a citizen of the United States, residing at South Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in C01- lapsible Tubes and the like, of which the following is a specification.

My invention relates particularly to the H so-called collapsible tubes designed to hold toothpaste, shaving cream, paint, and other substances of a like creamy consistency. These collapsible tubes are provided with screw-threaded nozzles and the nozzle is closed by a screw cap. To extract any of the contents of the tube the cap must be entirely removed from the nozzle and the contents of the tube squeezed out. The cap is thus liable to be lost and this fact often becomes annoying to the user.

In order to avoid removing the cap it has been proposed to so construct it that it cannot be entirely unscrewed from the nozzle and various openings have been formed in the cap and the nozzle throu h which the contents of the tube may e forced when occasion requires that it shall be used but these openin s are usually of small diameter and are liable to get stopped up when the creamy material dries and hardens.

The object of my invention is to form an opening through the screw cap which will permit the escape of the material of the tube and permit any excess to be removed from the vlcinity of the opening by wiping, scraping or otherwise clearing the vicinity of the opening so as to prevent any excess material drying and clogging it up.

My invention in its referable form consists in chamferin 0 one corner or edge of the screw cap t ereby forming an opening which will connect with the inside of the nozzle when the cap is partially unscrewed while at the same time making a tight joint when the cap is screwed to its closed position.

With an opening thus formed, the entire chamfered surface may be wiped or scraped ofi" of any excess material or the threadof the nozzle will act to secure this result as the cap is turned.

Vhile I have referred to my invention as applicable to collapsible tubes, it may also 55 be applied to any form of container such as a bottle, using a screw-threaded nozzle and a screw cap and designed for containing freely flowing liquids.

In the accompanying drawing, I have illustrated a variety of forms in which my invention can be constructed.

Referring to the drawing,-

Fig. 1 is a plan of the top of a collapsible tube with the screw cap in place and in open position,

Fig. 2 is the same with the cap removed,

Fig. 3 is a section on the line 3-3 of Fig. 1,

Fig. 4 is a front elevation of the same,

Fig. 5 is a side elevation taken at right angles to the position shown in Fig. 4.

Fig. 6 is a section on the line 3-3 showing the cap closed, and 4 Fig. 7 is a vertical lon itudinal section through a modified form 0% the device having the cap set at an angle with the body of the tube,

Referring to the form shown in Figs. 1 to 6, 1 indicates the collapsible tube; 2 is the screw-threaded nozzle and 3 is the cap.

The opening is formed by chamfering the corner of the cap by a cut extending in a plane surface from the upper surface diagonally through the cap and removing a generally triangularsection from the upper corner of the cap as shown at 4.

This chamfering cut may be removed from the cap alone or it may include a portion of the nozzle. In Figs. 3 and 6, a portion of the nozzle is removed, shown at 4, so that the plane or cut surface when the cap is screwed down to its closed position will include a ortionof the cap, a portion 4 of the nozz e and a portion of the disk or gasket 5.

For the purpose of holding the cap in position, the diameter of the nozzle below the screw-threaded portion is slightly smaller than the screw-threaded portion as shown at 6 and the lower end of the cap is turned slightly inward as shown at 7.

There is thus formed at the lower end of' the screw-threaded portion of the nozzle a shoulder 8 against which the inturned portion 7 of the cap will strike as the cap moves upward.

The cap is thus prevented from being entirely removed from the nozzle.

As will be seen in Fi 3, when the cap is unscrewed either who y or partially, an

unscrewed, the screw thread opening 10 is formed through the chamfered portion between the upper end of the nozzle and the lower surface of the cap.

There is thus formed an elongated opening of greater or less thickness or wldth through which a-ribbon-shaped ortion of the material will be forced as t e tube" is squeezed.

Any surplus material which may adhere around the opening may be wiped off from the chamfered surface or when the cap is of the cap will opening and rewhich may adhave a tendency to clear the move any dried material here around it.

When the cap is screwed tightly in place a tight joint 11 is formed which effectually prevents the admission of air and the drying up of the contents of the tube.

In Fig. 7, I show modification in which the nozzle and cap are set at an angle with the body of the tube so that the chamfercd surface 4 comes in line substantially with the center of the tube and when the tube is held upright the dischar e opening for its contents will be directly ieneath and in line with the center.

I claim In a collapsible tube for toothpaste and the like embodying a screw-threaded nozzle, an opening in the top of the nozzle, a screw cap therefor, at the juncture of the end and side wall to form an opening in the cap, said openingbeing normally out of alignment with the opening in the nozzle whereby the partial unscrewing of the cap will form a direct opening into the interior.

CHARLES B. HASKELL.

said cap being chamfered off

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