US2037989A - Cartridge - Google Patents

Description

April :L.A. MACKLANBURG 2,037,989

' CARTRIDGE Filed Apri1 29, 1955 5 Sheets-Sheet 1 ATTORNEYS.

April 21, 193.6.

L. A. MACKLANBURG CARTRIDGE Filed April 29, 1935 3 Sheets-Sheet 2 April 1936- A. MACKLANBURG 2,037,989

CARTRIDGE Filed April 29, 1935 3 Sheets-Sheet 5 INVENTOR ATTQRN EY Patented Apr. 21, 1936:

UNITED STATES PATENT oFFicE Claims. (01. zoo-5e) I My invention relates to the method of and apparatus for loading guns or other apparatus used for dispensing caulking materials, putty, grease or other liquid or semi-liquid.

5 At the present time apply caulking material and the like from a gun usually consisting substantially of a cylindrical barrel having a plunger therein for forcing the material outwardly through a suitable nozzle.

The gun is loaded by suction created at the nozzle by drawing the plunger away from the nozzle end of the cylinder. The substance usually used in guns of this type are somewhat viscid and in order to load the gun not only is considerable effort required, but before .the gun can be used the caulking material is not only thus occasioned, but considerable inconvenience is caused.']

The prime obfect of the present invention is to provide for insertion in the gun a cartridge or load of the material to be dispensed, and means for removing the envelope of the load and leavi I the material in the gun.

In my co-pending' United States patent application filed December 29, 1934, underSerial No.

759,726, and entitled Apparatus for and method of loading guns for dispensing viscid or semiliquid materials, I have disclosed a cartridge for similar. materials which is adapted to be placed in the gun, and the walls of which collapse in the the container is emptied by pressure of the gims plunger. That application discloses that it is preferred to form the cartridge of "Cellophane.

5 It has been found that many caulking guns now in use are so constructed that as the walls ,0! the cartridge are collapsed the pressure forces the Cellophane between the plunger'and the inner surface of the gun barrel. This requires the gun to be disassembled in order to remove the envelope of the cartridge. My present invention is so designed that the walls of the cartridge may be removed leaving only the com-- modity to be dispensed within the gun.

Other objects of the invention are to provide I an apparatus of this class which is new, novel, practical and of utility; which will load. the gun without any mess or discomfort to the operator; which will prevent loss bf material; which is speedy'in operation; which is cheap to manufacture; and, which will plishing all the purposes for which it is intended.

these and other objects in'view as will more fully appear hereinbelow, myinvention consists in the construction, novel features, and

it is common practice to.

'after being loaded it must be wiped. A waste of caulking gun being be efficient in accomcombination of parts hereinafter more fully described, pointed out in the claims hereto appended, and illustrated in the accompanying three-sheet drawings, of which,

Figure 1 is a fragmentary perspective view of the exhaust end of the barrel of a usual caulking gun, and showing one embodiment of the in-, vention operatively installed therein;

Figure 2 is a fragmentary sectional view of the-embodiment illustrated in Fig. 1;

Figure 3 is a view similar to Fig. 1 showing a 10 slightly diflerent embodiment of the invention;

Figure 4 is a perspective view of the cartridge installed within a'fragment of a usual gun barv rel and showing another embodiment;

Figures 5, 6 and 7 are fragmentary elevational views partially in section showing threeothe embodiments of the invention;

Figure 8 is a perspective view of a closure use in connection with the embodiments of the in-' vention illustrated in Figs. 7 and 9;

Figure 9 is a fragmentary perspective view of the rear portion of a usual caulking gun show-- ing a still different embodiment;

Figures 10, 11, 12 and 13 are top views of four different plates which may be used in connection with the embodiments illustrated inl igs. 1, 2 and 3; and,-

Figure 14 is a pictorial view showing a usual loaded by the method disclosed herein.

Like characters of reference designate like parts in all the figures. It is understood that various changes in form, proportion, size, shape, weight and other details of construction, within the scope of my invention may be resorted to from the spirit or broad principle of my invention and without sacrificing anyof the thereof; and it is also understood that the drawings are was interpreted as being illustrative and not restrictive. 1

The inventive idea involved iscapable of re- I ceiving avariety of mechanical expressions 'one' of which, for. the purpose. of illustrating the invention, is shown in Figs. land 2 of the accom panying drawings wherein:-

The reference numeral I of a usual caulking gun having flange 2 surroundingits open end from which the usual nozzle and nozzle cap has been v.1"e'n1ove(l. Thisv embodiment of the invent-ionincludes a cylindri cal cartridge 3 adapted tobe insertedvin the barrel I and preferably cons in man envelope of suitable flexible materr so. has Cell0phane" which without departing advantages indicates the barrel I 9 acts to hold the disc 1 and the handle 8 upon the' neck 6. Preferably, the disc I is provided with a rounded annular upstanding flange I surround-.-

ing its perforation to prevent tearing the envelope of the cartridge as it is drawn through the perfo-' ration. The flange I0, however, does not in any manner act as a nozzle for the commodity 4 because the disc 1 must necessarily be removed from the barrel I before the usual barrel-cap and nozzle can be installed.

1 In loading a gun with this embodiment the operator holds the disc I against the flange 2 of the barrel I with two fingers of one hand and grasps the handle 8 with his other hand. He then pulls upon the handle and draws the Cellophane envelope or container outwardly through the perforation in the disc I, causing the material 4 to uhtwist the twisted portion 5 at the other end of the container and open the same. The material 4 isthereby forced from the container and remains within the barrel.

In Fig. 3 is illustrated an embodiment in which the handle 8 and knot 9 are supplanted by a loop II which is adapted to receive one of the operators fingers whereby the Cellophane container may be withdrawn through the disc I. The loop II may be formed in any desired manner such as by a binding cord I2 or the loop may be formed by tieing the free end of the neck 6 upon itself.

If it is found desirable in order to safely ship and handle the cartridges to make the twisted portion 5 of considerable length, it will probably be necessary for the operator to sever the twisted portion 5 'closeto the end I3 (Fig. 4) of the cartridge before placing the load in the gun.

In Fig. 4 is illustrated an embodiment in which the disc 'I has two oppositely disposed latch members, one of which is indicated by the reference numeral I4. Each latch member has a return portion I5 for fitting beneath the flange 2 and holding the disc in contact with the barrel. The flange 2 of the barrel has oppositely disposed notches, one of which is indicated by the reference numeral I6, for permitting the passage of the latch return l5 past the flange. In installing the disc of this embodiment upon the barrel, the disc is slightly rotated after the latch returns I 5 have been passed through the notches I6.

Providing the flange 2 of the barrel I with the notches I I5 is'not a part of this invention since the notches'are common to caulking and greaseguns for the purpose of receiving projections upon the usual nozzle cap.

In Fig. 10 is illustrated a disc I having an elongated slot H for passing or er the neck 6 of the cartridge instead of the round perforation illustrated in Figs. 1 and 2.

It may be found desirable to use in lieu of the disc I an elongated plate I8 having either an elongated slot I I or a circuar perforation, notshown, for receiving the neck 6. In Fig. 12 the plate I8 is bifurcated at one end by a slot I9 which may be carried by the operator and inserted over the neck 8 to act in lieu of the disc 1 or the plate,- l8.

In Fig. 13 the plate I8 not only bifurcated by the slot I 9 but is also provided with a circular 'enlargement 20 in communication with the inner end of the slot. In this embodiment the neck 8 20 before the Cellophane" container for retaining the co is passed through the slot I9 into the enlargement is withdrawn.

' vIt will be obvious that the plates illustrated in Figs. 11, 12 and 13 and the discs illustrated in Figs. 1, 2, 3, 4 and 10 may be used with either the handles 8 or the loop I I as desired. Also, that any desired opening to retain within the'gun barrel the material to be dispensed and which will also permit withdrawal of the Cellophane container,

, can be utilized.

Attempt has heretofore been made to utilize the usual nozzle cap 2I of the gun (Fig. 5) as a means odity in the gun as the envelope is withdrawn through its usual outlet. It has been found, however, that the usual outlet in the nozzle cap is too large to be practical for this use and consequently some of the commodity is permitted to be withdrawn from the gun with the envelope.

It has also been found that after thegun has once been used, the nozzle is'left full of the commodity being dispensed. Consequently with some commodities it is impossible and with all commodities it is impractical to force the neck 6 of a second container through the filled nozzle even though only a straight neck were provided upon standing exteriorly' threaded boss 22 through which the neck 6 may be inserted. The perforation in the boss 22 acts in-the same manner as does the perforationin the discs or the plates. In Fig. 9 is illustrated the rear or operating end of a usual caulking or grease gun. In this embodiment the guns plunger 23 is illustrated in dotted lines at'the rearmost end of its throw. The bar-. rel I is provided with a centrally perforated exteriorly threaded outstanding boss'24 which lies slightly ahead of the pl er when in its rearmost position and through w h the neck 8 of the cartridge 8 may be passed. The boss 24 acts similarly to the boss 22.

In the embodiments illustrated in Figs. 7 and 9 after the Cellophane container has been withdrawn a threaded cap 25 (Fig. 8) will be' utilized upon either the boss 22 or the boss 24 to close its perforation.

In Fig. 6 is illustrated an embodiment whereby rollers are used for compressing the neck 8 of the container 3 and permitting. its withdrawal while retaining the material to be dispensed within the barrel I of the gun. In this embodiment oppositely disposed arms 25 and 26 are pivotally mounted upon outstanding elements 21 and 28- respectively and the free ends of the arms each carry a roller 29. The arms may be swung upwardly into the position illustrated for engaging the neck 6, but normally hang or are held by any suitable means away from the exhaust end of the barrel.

From the foregoing description it is thought that the operation of the various embodiments and then being cast aside after use.

' Obviously, the invention is susceptible of embodiment in forms other than that which is illusclaimed and desired to be secured by Letters Patent, is:

1. A cartridge for filling rigid containers with a pliant commodity, comprising a flexible envelope with the commodity therein, a portion of said envelope extending beyond the commodity and collapsed to form a neck, and a rigid perforated element surrounding and carried by the neck, the perforation in said element being sumciently small to retain substantially all of the commodity within the container when the filled envelope is placed in the container and is then drawn therefrom through the element. 2. Organization as described in claim 1, in which the free end of the neck is provided with a hand hold means. I 3. Organization as described in claim 1, in which the-perforated element includes a disc having a passage through which the neck extends, and means carried by' the disc for removably connecting it to the open end of the container.

4. A cartridge for filling rigid containers with a pliant commodity, comprising a flexible envelope with the commodity therein and adapted to iit within the container to be filled, a portion of .said envelope extending beyond the commodity and collapsed to form a neck, and a plate separate from the container and having an opening through which the neck may be passed, said opening being suiiiciently minute to reduce the body of the envelope and exude the-commodity therefrom. into the container when the cartridge is placedin the container and the envelope is then drawn out of the container and through the plate.

5. A cartridge for pliant commodities comprising, a flexible envelope containing the commodity and having one openable end, the other end portion of said envelope extending past the commodity and being collapsed to form a neck, a

' rigid element having an opening for receiving the neck, said opening being sufiiciently small to collapse'the body of the envelope and prevent the passage of any appreciable amount of the commodity therethmugh' when the envelope is drawn through the element.

LOUIS A. merit-mum.

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