US2638145A

US2638145A - Gummed tape serving mechanism

Info

Publication number: US2638145A
Application number: US150222A
Authority: US
Inventors: Robert A Havemann; Donald S Bruce
Original assignee: Gummed Products Co
Current assignee: Gummed Products Co
Priority date: 1950-03-17
Filing date: 1950-03-17
Publication date: 1953-05-12
Anticipated expiration: 1970-05-12

Description

y 1953 R. A. HAVEMANN ETAL 2,638,145

GUMMED TAPE SERVING MECHANISM Filed March 17, 1950 FIG. 6'.

IN VENTURE- Aoacwr fl. HA VEMANN g; Dawn. 0 6'. BRUCE,

ATTORN 5Y5.

Patented May 12, 1953 GUMMED TAPE SERVING MECHANISM Robert A. Havemann and Donald S. Bruce, Troy, Ohio, assignors to The Gummed Products Company, Troy, Ohio, a corporation of Ohio Application March 17; 1950, Serial No. 150,222

Our invention relates to tape serving mechanism of the general type shown in the application of Robert A. Havemann et al., Serial No. 134,454 filed December 22, 1949, now Patent No. 2,614,523, and to improvements in such mechanism wherein and whereby a tear string, instead of being previously combined with a web or sup.- ply of tape to be dispensed, is separately fed from a supply and is combined with the tape during the interval of dispensing.

In such mechanism it is our object to feed a predetermined supply of gummed tape forwardly and to feed a predetermined supply of string into contact with the tape, and thereafter sever the combined tape and string into predetermined lengths. A further object of our invention is to provide means operable in conjunction with the tape and tear string feeding and, cut-off mechanism to cut tear string tabs in the tape which will facilitate tearing out the string to release the seal severing the tape and string.

The foregoing objects and other objects to which reference will be made in the ensuing disclosure, we accomplish by that combination and arrangementof parts of which We have shown a preferred embodiment.

In the drawings: v

' Figure l is a side elevation with some of the internal parts indicated in dotted lines, the machine being in normal inoperative position, and with the exception of the tear string feeding mechanism and cut-off, modifications being quite similar to Figure l of application Serial No. 135,454 to which we have referred.

Figure 2 is a front end elevation of the machine shown in Figure l.

Figure 3 is a slightly enlarged fragmentary sectional elevation showing the operating parts of our improved mechanism.

Figure 4 is a perspective view of the brush moistening device as modified.

Figure 5 is a perspective view of the string mcistening guide added to the tape serving mechanism shown in the earlier filed application. Serial No. 134,454.

Figure 6 is a plan view of a combined tape and tear string with one type of tear string tear ta indicated.

6 Claims. (Cl. 154-1.7)

Figure 7 is an enlarged fragmentary view of the upper guide plate showingthe slots therein.

- various rollers and rods forming part of the: tape dispensing mechanism are journaled or supported.

The supply roll 3 of tape is mounted on the rollers 5 and 6. Other mechanical equivalents may be provided to support the roll or supply of tape. The tape is fed forwardly by frictional contact with a lower feed roll I and upper fed roll 8.

The feed roll actuating lever 9 is journaled as indicated at ID on a shaft rotatively mounted between the side panels 2. The lever has a round hole l l on its short arm which engages a pin i2 on the ratchet wheel It. An elongated arm 28 is fixed to the ratchet wheel l3 and positioned so that its flanged end 28a will be contacted by the actuating lever Si and moved therewith. The ratchet wheel i3 is thus driven in a clockwise direction by the actuating lever 53 which contacts both the pin I2 and the flange 28a. of the arm 28. A larger gear wheel [4 is also journalecl on the shaft to and it carries the pawl [5, spring pressed as indicated at it to engage the ratchet wheel l3 with clockwise movementof the ratchet wheel thereby carrying around the gear wheel I l.

The gear wheel M has a set of smaller driven gear wheels ll, IS, the gear is being fixed on the shaft I!) which carries the lower feed roller 1. The gear wheel 18 rotates clockwise with each tape feeding operation.

The upper feed roll 8 is mounted in slots 20 which permit the feed roll 8 to rotate by frictional contact with the lower feed roller 1 either with tape between the rollers or with the feed rollers merely engaging frictionally. The throw of the lever 9 is controlled by an adjustable stop mechanism generally indicated at 22.

The lever 9 has an actuating handle 21 which the operator of the machine uses to advance a predetermined length of tape to the brush moispasses between upper and lower guide plates 25,

26. The upper guide plate 25 has a cutting edge 21 which, as will be described, functions with the cut-off knife to shear off the tape'crosswise of its long crariharm. pivoted on journal at theother enri'ofthe crank arm 32' the link M connects the crank arm. 32 to the cut-oil: knife pivoted at ill (Figure 2). biases the lever arm 32 to the position illustrated in Figure 1. A roller 31 is mounted on the actuating lever 9 and with eachcloclrwise movementof the lever 53, the roller 3irmoves-finmitspos1-- tion beneath the dog 25?, the dog 254. being pushed upwardly to permit passage of the roller. When the actuating lever Q reaches the end of its clock- "ise movement and is released, it returns to its s ,arting position under the influence of the spring 25.5. This. movement of the lever arm causes the roller 3:! tostrilie the dog thereby causing a counterclockwise movement of the lever arm 32 through the intermediary of the lever arm ti? and against the tension of the spring 35. When the crank arm 32' is rocked in this manner, the end of the cut-off knife is elevated with a quick shearingstrolz-e which cuts off the tape.

To the shearing knife it there added the which-make shipping a tear string pull tab enti le-leading end-of the uncut tape supply possible. A cutting die, as shown- Figure 3 and consisting of the knife edged portions 38, is mounted on abase 39 screws all to the knife The upper guide plate 25 has a: pair of slots 5!, as shown in Figure '7, which; permit. the portions 38- to pass through the tape making lengthwise slits in the leading edge of the. tape supply on both, sides of the line where thejtear, string is secured to the adhesive surface of" the; tape, during the dispensing or serving operation.

The: slits; may be parallel with the length of the tape or they ma be rounded to provide a larger tab.

It will hepobservcd that the moistening brushes A l. as: shown in Figure l, are divided so that no moisture will applied. to a band of the tape extending on both sides of the tear string. This is to prevent tr e tear string the tear tab being. ad-hesively secured to the container.

The improved mechanism by which we iudepcnden-tly feed and combine the tear with the tape will now be described. This represents the invention forming the subject matter of this application as an improvement over the combination illustrated. in our previously filed applica tion Serial 134,454, filed December 22, 1949.

The tear" string til is mounted on a suitable spool 51- supported on a bracket 52. The string travels in the direction indicated by the arrows in Figures 3. and 3. Ihe string passes through the. string moistening guide indicated generally at 53c, which consists in an M-shaped member having legs 54 secured to the brush moistening pan. The leg lit-has a slot 55 and the leg a slot 55.- for guiding the. tear string which forms a loop 5'! underneath the cross member 58, which extends across from the. legs 53, El i, Well below the surf-ace of the liquid in the brush pan. If desired, the cross member 53 may have holes through which they string may be threaded.

Passing from. the moistcning pan the string which is secured with- A spring normally:

The string then passes in the groove 68 up into position to be frictionally received between the rollers l and 8. Since the juncture of the string with the tape occurs at a time when the string is moist, it will adhere to the tape along its median line. Further, since the cutting off operation occurs some distance from the point of juncture of the string and tape, once thestring is threaded around the moistening member 53a. and under the roller 58 and in the groove 68 into contact with the tape, no rethreading is necessary during operation of the tape serving mechanism. As will beevident from li igures l. and 3 of the drawings,

the co' b ned tape and string will be jointly severed-into-given lengths by the cut-off knife 35.

-.The;:slitting of the tape and the various modifications set forth in the application Serial No. 1343M will occur during the operation of the device just as if the initial supply of gummed tape had the tear string already combined with it.

flodifications in the mechanism for. feeding the st will readily occur to those skilledfin,

for feeding forwardly a limited supply of such.

tape, in step-o'- -step operation, a guide plate under .ich'said tape is. fed having a severing extending crosswise of the direction offced of the a cut-oil knife provided with means, synchronized with the tape feeding device, for actuating knife and adapted to move into such relationship with, the severing edge of the guide plate as to sever the tape crosswise of its length at the endof each feeding operation and cooneratingineans on said knife and. severing edge for ting an the tape and forming a pull tab at the end'of a step-by-step. feeding, opera tion, a supply device for string, and means for inoiste'n ngand feeding a continuous length of.

string into contact'with said gumined tape as it is fed, forwardly by said friction rollers, said means comprising a moistening guide for leading the string through a moistening pan, and a guide supply of gummed tape to be served, means for feeding to said friction feed rollers continuous of tear string material, said feeding means ""lllg a guide for-passing the-string through a moi toning pan and leading it into. contact with. one of the friction feedrollers, said last men tioned friction feed roller having an annular groove therein constructed and arranged to feed the string to a medial lengthwise position on said gumnied tape.

3. In a guru tape serving machine, means for serving predetermined cut-01f lengths-of tape and; meansfor feedinga moistened tear string into contact with the tape and along aimedian line lengthwise of said tape prior to its being out off,

said last mentioned means comprising a feed roller having an annular groove therein.

4. In a gum tape serving machine, means for serving predetermined cut-oil? lengths of tape and means for feeding a moistened tear string into contact with the tape and along a median line,

lengthwise of said tape prior to its being out off, said last mentioned means comprising a feed roller having an annular groove therein and means effective during the cutting off operation for snipping tear tabs at the ends of the cut-off lengths.

5. In a gummed tape serving machine wherein frictional feed rollers are provided for serving a supply of gummed tape, and wherein a brush applicator mounted in a liquid receptacle is provided to moisten the tape fed from the friction rollers, means for associating a tear string with the tape asit is fed between the frictional roller,

said means comprising a moistening guide for leading the tear string through the liquid receptacle and a guide roller for leading the string from the liquid receptacle into contact with one of the friction rollers, said last mentioned friction roller having an annular groove therein for receiving w the string and carrying it into contact with the gummed tape, said annular groove being positioned so as to feed the string to a medial lengthwise position on the gummed tape.

6. In a gummed tape serving machine wherein frictional feed rollers are provided for serving a supply of gummed tape, and wherein a brush applicator mounted in a liquid receptacle is provided to moisten the tape fed from the friction rollers, means for associating a tear string with the tape as it is fed between the frictional roller, said means comprising a moistening guide for leading the tear string through the liquid receptacle and a guide roller for leading the string from the liquid receptacle into contact with one of the frictional rollers, said last mentioned friction roller having an annular groove therein for receiving the string and carrying it into contact with the gummed tape, said annular groove being positioned so as to feed the string to a medial lengthwise position on the gummed tape, said moistening guide being a generally M-shaped member the legs of which are secured to the liquid receptacle and have slots at their upper ends for guiding the string, the cross pieces connecting the legs of the moistening member being of a size to extend below the surface of the liquid in the receptacle and adapted to guide string into the liquid when looped therebeneath.

ROBERT A, HAVEMANN. DONALD S. BRUCE.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,901,908 Hoyos Mar. 21, 1933 2,307,406 Howard Jan. 5, 1943 2,360,845 Bronander Oct. 24, 1944 2,365,477 Kreuger Dec. 19, 19% 2,486,471 Fritzinger Nov. 1, 1949