US1502298A

US1502298A - Measuring device for collapsible tubes

Info

Publication number: US1502298A
Application number: US503718A
Authority: US
Inventors: Frank L Dyer
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-09-28
Filing date: 1921-09-28
Publication date: 1924-07-22
Anticipated expiration: 1941-07-22

Description

IEASURING DEVICE FOR COLLAPSIBLE TUBES Filed Sent. 28 1921 &

\ I! I I f .II'IHA INVENTOR Patented July 22, 1924.

NITED STATES FRANK L. DYEB, OF MONTCL AIR, NEW JERSEY.

MEASURING DEVICE FOR COLLAPSIBLE TUB ES.

Application filed September 28, 1921. Serial No. 503,718.

To all whom it may concern:

Be it known that I, FRANK L. DYER, a citizen of the United States, residing at Montclair, in the county of Essex and State of New Jersey, have invented a certain new and useful Measuring Device for Collapsible Tubes, of which the following is a full, clear, and exact specification.

My invention relates to an im roved measuring device for collapsible tu es, of the type disclosed in my application for patent filed January 8, 1921, Serial No. 435,972, wherein a tubular body communicates with the interior of the tube and is provided with a discharge opening and with a plunger movable with respect to the same, whereby when the tube is squeezed the pastelike material forced into the tubular body will move the plunger longitudinally, while by reversing the movement of the plunger a measured quantity of the material will be ejected through the discharge opening, suitable means being provided for uncovering and closing said opening to permit the operations described to take place.

The objects of the present invention are to simplify the construction of the device, to improve its operation, and to make more easy the assembling of the parts in manufacture. A further object, in its preferred form, is to provide a device in which the discharge opening will be automatically closed when the desired amount of material is ejected, thereby overcoming the necessity of doing this manually and assuring the normal closure of the discharge opening to prevent the material from drying or caking within the same.

The device may be in the form of a separate attachment to be removably secured to the neck of a collapsible tube, as described in my said application, or it may be manufactured as a part of such tube. By reason of its reat cheapness and ease of assem bling, t e extra cost'of manufacturing tubes equipped with my improved device is slight, since I do away entirely with the present screw cap and the necessary threading operations on the neck and cap.

In order that the invention may be better understood, attention is directed to the accompanying drawing forming part of this specification, and in which:

Fig. 1 is a longitudinal section throu h the upper or neck-end of a collapslble tu e with the present improvements thereon,

Fig. 4, a detail view showing the dis- I charge opening, slot and stop as in Fig. 1, but illustrating the inclining of the upper edge of the slot to automatically close the 'discharge opening.

In the above views, corresponding parts are represented by the same numerals.

The collapsible tube 1, is of usual con-- struction, the paste-like material being introduced within its open lower end which is then closed and sealed. The neck 2 constitutes the tubular body of the measuring device, and is formed as a part of the tube. This neck is longer than usual and is preferably larger in diameter, these dimensions depending upon the amount of material to be discharged for each use. It isprovided with a discharge opening 3, of desired size and form.

Fitted within the tubular body 2 is a plunger 4. in the form of a sleeve with a closed upper end and an open lower end, the upper end being beaded at 5 and extending slightly 'beyond the tubular body so as to permit the plunger 4 to be given a turning movement within the tubular body. To facilitate this, the bead 5 is preferably knurled as shown.

The sleeve or plunger 4 is formed with a slot 6 which may uncover the opening 3 during the reverse or discharge stroke of the plunger, while by slightly rotating the plunger the slot 6 will be moved out of line with the opening and the latter will be closed as during the upward stroke of the plunger and when the tube is not in use.

To limit the partial rotary movement of the plunger I provide a stop 7 in the bore of the tubular body, which stop is engaged by one or the other longitudinal edge of the slot 6, according as the plunger is in position to open (Fig. 2) or close (Fig. 3) tl 1e discharge opening 3. This stop also limits the upward or outward movement of the plunger, when the lower edge of the slot 6 engages the same, as shown in dotted lines in Fig. 1. It may also limit the downward or inward movement of the plunger by engagement with the upper edge of the slot, or this movement may be limited by engagement between the bead 5 and the edge of the tubular body.

The sleeve or plunger 4 is formed preferably of very thin sheet brass or copper, or other resilient and ductile metal, by drawing or stamping, the slot 6 being cut therein y a suitable die. By using thin resilient metal. it will make a tight fit with the tubular body, the slot 6 permitting the sleeve or plunger to slightly expand into close contact with the bore of the tubular body under the eifect of the pressure of the paste-like material. At the same time, the use of resilient metal permits the plunger to be assembled after the stop 7 is formed in the tubular body, since by pressing the plunger inwards the lower edge of the slot 6 will ride over the stop 7 and snap beneath the same.

The sto 7 may be a separate small pin passing t rough the wall of the tubular body, as in Fig. 3, but it is formed preferably as in Fig.2, by depressing the metal of the tubular body by a sharp tool, thus forming the stop as a projection or protuberance in the metal.

In the preferred form (Fig. 4) I make the slot 6 with an inclined upper edge 8 which engages the stop 7 near the end of the inner stroke of the plunger, and automatically turns the same to close the discharge opening, as will be understood. This arrangement is especially desirable with largesized tubes; for small-sized tubes it may not be desirable on account of the limited size of the parts.

If desired, the upper edge of the slot 6 may be formed with a small notch 9 (see Fig. 4), which receives the stop 7 when the plunger is forced all the way inwards and prevents the accidental turning of the plunger to uncover the opening 3 when the tube is out of use.

Obviously the portion of the plunger above the slot 6 is a dead-end; any material entering the plunger above the slot is not ejected. This portion of the plunger may be allowed to fill with the paste-like material wh ch may harden or cake therein, or, if desired, the plunger, beforeassembling, may be filled above the slot with a suitable material such as soap or a plastic composition, thus preventing the accumulation and oaking of the paste-like material within the plunger.

In operation, the plunger 4: will be in the 1nner ositionJshown in full lines Fig. 1, but w1l be rotated to carry the slot 6 out of line with the openmg' 3, as in Fi 3. The dischar e open ng 3 will thereby 1 closed and will stay closed so long as the plunger 4. is moved outwards without being rotated to uncover the discharge opening. The tube 1 is now squeezed and the paste-like material is forced into the plunger 4 which is thus moved outwards until arrested by the slot 7 engaging the inner or bottom edge of the slot 6. The plunger is now partially rotated, as in Fig. 2, to bring the slot in line with the opening 3, and is then forced inwards, causing the paste-like material to be ejected through the opening 3. \Vhen the plun er 1 reaches its innermost position, as in full lines in Fig. 1, itis then turned to carry the slot 6 out of line with, and again close, the opening, when the operation as described may be re eated. With the modification shown in ig. 4, this final turning of the plunger to close the discharge opening will be performed automatically; near the end of its inward movement, the inclined edge 8 of the slot will engage the slot pin 7, so that the further inward movement of the plunger will cause the same to be rotated automatically, the notch 9 engaging the slotpin 7, when the plunger is all the way in and preventing the same from being turned accidentally to uncover the discharge opening and also keeping the discharge opening closed to prevent the material from drying and caking.

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

1. A collapsible tube formed with an integral tubular body having .a discharge opening therein, means for uncovering and closing said opening including a plunger movable slidably and rotatably with respect to said tubular body, whereby material forced from the tube by collapsing the latter will move the plunger outwards and a reverse movement of the plunger will eject a measured quantity of material through said opening, substantially as set forth.

2. A measuring device for collapsible tubes, comprising a tubular body into which is forced material from the tube, a discharge opening in the wall of the tubular body, and a sleeve-like plunger rotatably and slidably mounted in the tubular body and formed with a slot adapted to be brought into and out of line with said opening, substantially as set forth.

"M s A 3. A measuring device for collapsible.

tubes, comprising a tubular body into which is forced material from the tube, a discharge opening in the wall of the tubular body, a sleeve-like plunger rotatably and slidably mounted in the tubular body and formed with a slot adapted to be brought into and out of line with said openin and a stop with which the side edges of t e slot engage to limit the rotatable movement of the plunge'r, substantially as set forth.

4. A measuring device for collapsible tubes, comprising a tubular body into which is forced material from the tube, a discharge opening in; the wall of the tubular body, a sleeve-like plunger rotatably and slidably mounted in the tubular body and formed with a slot ada ted to be brought into and out of line wit said opening, and a stop with which the side edges of the slot engage to limit the rotatable movement of the plunger and with which the lower edge of the slot engages to limit the outward slidable movement of the plunger, substantially as set forth.

5. A measuring device for collapsible tubes, comprising a tubular body into which is forced material from the tube, and a sleeve-like plunger rotatably and slidably mounted with respect to the tubular body, one of said elements being formed with a dischar e opening and the other with a slot adapte to be brought into and out of line with said opening when the plunger is moved rotatably, substantially as set forth.

6. The combination with a tubular body into which paste-like material is forced from a collapsible tube and formed with a discharge opening in its wall, a resilient sleeve-like plunger in said body having a rotatable movement therein, and formed with a cut-out portion close to its edge and adapted to be brought into and out of line with the dischar e opening, and a stop on the bore of the tu ular body, over which the lower edge of the cut-out portion is forced with a snap action to bring the stop within the cut-out portion and limit the retatable movement of the plunger, substantially as set forth.

measuring device for collapsible tubes, comprising a tubular body into which is forced material from the tube, a sleevelike plunger rotatably and slidably mounted with respect to the tubular body, one of said elements being formed with a discharge opening and the other with a slot adapted to be brought into and out of line with said opening when the plunger is moved rotatatably, and means for giving to said plunger a rotatable movement when it is moved slidably, substantially as set forth.

8. A measuring device for collapsible tubes, comprising a tubular body into which is forced material from the tube, a discharge opening in the wall of the tube, a projection from the bore of the tubular body, and a sleeve-like plunger rotatably and slidaioly mounted in the tubular body and formed with a slot adapted to be brought into and out of line with said opening and with an inclined edge which cooperates with said projection to rotatably move the plunger when it is moved slidably, substantially as set forth.

9. The combination with a tubular body into which paste-like material is forced from a collapsible tube and formed with a discharge opening in its wall, a sleeve-like plunger in said body having a rotatable movement therein and formed with a cut-out portion adapted to be brought into and out of line with the discharge opening, said outout portion being formed with a notch in its upper edge, and a stop on the bore of the tubular body and engaging wi hin the outout portion to limit the rotatable movement of the sleeve and engaging said notch to lock the plunger against rotatable movement, substantially as set forth.

This specification signed and witnessed this 23rd day of September, 1921.

FRANK L. DYER.

Witnesses:

MAY J omas, CELI'A O. WIPPMAN.