US2574332A

US2574332A - Tape-dispensing device

Info

Publication number: US2574332A
Application number: US680439A
Authority: US
Inventors: Alfred P Krueger
Original assignee: DERBY SEALERS Inc
Current assignee: DERBY SEALERS Inc
Priority date: 1946-06-29
Filing date: 1946-06-29
Publication date: 1951-11-06
Anticipated expiration: 1968-11-06

Description

Nov. 6, 1951 A. P. KRUEGER 2,574,332

TAPE-DISPENSING nsvxcs Filed June 29, 1946 2 SHEETS-'SHEET 1 Nov. 6, 1951 A. P. KRUEGER TAPE-DISPENSING DEVICE Filed June 29, 1946 2 SHEETS-SHEET 2 Patented Nov. 6, 1951 UNITED STATES PATENT OFFICE TAPE -DISPENSING DEVICE Alfred P. Krueger, Stratford, Conn., assignor to Derby Sealers, Incorporated, Derby, Conn., a corporation of Connecticut Application June 29, 1948, Serial No. 680,439 11 Claims. (Cl. 184-84.!)

. This invention relates to a tape-dispensing device, and more particularly to a device for dispensing pressure-sensitive tape.

Tape of the character referred to above is tacky or clingable upon one surface, and for this reason difficulty has been encountered in .the past in providing a device which would draw or feed the tape from the roll and present a free end projecting from/the machine, which free end may be grasped by the fingers of the user and torn off against a tear-off blade, or severed in some other way. While in the particular machine herein illustrated a tear-oil blade is shown, certain principles of the invention may be used, for example, in a machine which automatically severs the free end of the tape and dispenses the severed portion to the operator, who needs only remove it from the machine.

It has been found that tape of this character may be fed or drawn from the supply roll by a traveling feeding means having a surface to which the tacky side of the tape may cling, the tape adhering to the feeding means with sufllcient force to draw it from the supply roll. The fact, however, that the tape will adhere to the feeding means with considerable force presents the problem of stripping it from this feeding means in order that there may be presented a free end which may be grasped by the operator.

Therefore, one feature of the present invention is the provision of stripping means to positively strip the tape from the feeding means after it has been advanced by the latter so that this free end of the tape will project from the machine in an accessible and convenient position. This stripping means is so positioned relatively to the feeding means that the tape will have suflicient contact with the latter in order to adhere thereto with suilicient force to draw the tape from the supply roll, and at the same time will be stripped from the supply roll at a point substantially opposite that of the severing or tearoif means, so that substantially the entire portion of the free end of the tape will be severed for use.

It has also been the experience of those using pressure-sensitive tape that the latter is apt to adhere to the severing means even though the latter is engaged by the non-tacky side of the tape. In other words, there will be, during the severing operation, slight contact, of the tacky material with the severing means, and, after repeated use, there will be suflicient accumulation of the tacky material on the severing blade to cause the tape to adhere thereto, and, in that event. the tape will not be properly fed or dispensed during a subsequent operation of the device. I, therefore, also contemplate in the present invention a stripping means for stripping the tape from the severing means, whereby the tape will be prevented from clinging to the severing means, and the end of the tape will at all times be free to be fed forwardly when the device is operated.

One obiect of the present invention is to provide a new and improved means for dispensing pressure-sensitive tape. A further object of the invention is to provide a dispensing device for pressure-sensitive tape, comprising a traveling feeding member to which the tape is adapted to adhere, and 9. vibratory stripping member adapted to be moved against and from the surface of the tape on said feeding member to strip the tape therefrom.

Still another object of the invention is to provide a dispensing device for pressure-sensitive tape having a rotating feeding member to the surface of which the tape is adapted to adhere so that it may be drawn from the supply roll, and a stripping member or stripping members adjacent the feeding member, the stripping member or members being intermittently moved against and withdrawn from the surface of the tape to effectively strip it from the feeding member and present a free end projecting from the feeding member. which may be readily grasped by the operator.

Still another object of the invention is to provide a device for feeding pressure-sensitive tape having a severing or tear-oft blade, and means for preventing the tape from adhering to this blade after it has been severed thereby.

A still further object of the invention is to provide a device for dispensing pressure-sensitive tape having a rotating feeding member to which the tape is adapted to adhere, and also having tripping means adjacent this feeding member and disposed adjacent one face of the tape as it is advanced by said member, a severing means at the opposite side of the tape, and stripping means cooperating with the severing means also located on the side of the tape opposite said first-named stripping means, the two stripping means being disposed substantially opposite each other with respect to the travel of the tape.

in .the accompanying drawings:

Fig. 1 is a side elevational view of a tapedispensing device embodying my invention;

Fig. 2 is a front elevational view thereof;

pawl, as shown in Fig. 3, being Fig. 3 is a partial side elevational view showing side opposite that shown in Fig. 1;

Fig. 4 is a top plan view;

Fig. is a sectional view on line L-B of Fig. 2;

Fig. 6 is a fragmentary view similar to Fig. 5, showing the parts in another position; and

Fig. 'l is an enlarged view of the severing means and stripping device cooperating therewith.

To illustrate a preferred embodiment of my invention, 1 have shown a frame comprising a base I2 and parallel upstanding side frame members II and I2. These members may be each provided with a slot [2 adapted to receive a spindle it upon which is rotatably mounted the supply roll I! of the tape to be dispensed.

As shown more particularly in Figs. 2, 4 and 5, a shaft i2 is rotatably mounted in the frame members Ii and I2, and secured upon this shaft is a feeding member in the form of a wheel or roll I1, which may be provided with a knurled or roughened surface, it, so that the tape issuing from the roll, as shown at i9, may adhere thereto. As will be understood, this type of tape is wound upon the supply roll with the tacky side in, so that, as shown in Figs. 5 and 6, the tacky side of the tape will engage the corrugated surface of the feed roll.

Secured to the shaft I2 is a ratchet wheel or pinion 2i, and pivoted upon this shaft is a lever 22, the lever being held thereon by acollar 23 secured to the shaft. A pawl 24 is pivoted at 25 to the upper end of the lever 22, the tooth of the adapted to engage the teeth of the pinion 2|. The body of the pawl 24 is extended upwardly beyond the pivot 25, so as to provide a handle or ilngerpiece 26 to be engaged by the operator to move the lever 22 and pawl 22 and effect movement of the feed roll i1.

As shown more especially in Fig. 3,

stops

21 and 22 are secured in openings in the frame member i2, so as to limit the movement of the lever 22, and thus limit the length of tape which is dispensed at one operation of the lever. If desired. additional openings 22 may be provided within which the stop 22 may be adjustably secured in order to vary the length of tape dispensed at one stroke of the lever. It will be understood that pressure upon the finger-piece 26 in a direction to move it counterclockwise, as shown in Fig. 3, will cause the pawl 24 to engage the teeth of the pinion 2|, and therefore rotate the feed roll. When the flngerpiece 25 is released, the weight of the lower end of the lever 22 below the shaft i2 will be sufficient to cause this lever to rotate in a clockwise direction, and restore the parts to the position shown in Fig. 3. It will, of course, be understood that the feed roll is not rotated during this return movement of the lever 22 and pawl 24, and it will also be understood that, if a single movement of the pawl and lever does not dispense a sufficient quantity of tape, as many of these movements as are desired may be made prior to the severing operation, in order to dispense any length of tape desired.

The shaft l6 also projects beyond the frame member H, and upon the projecting end of this shaft is mounted a pinion 3|! the teeth of which mesh with the teeth of a pinion 2| secured to a shaft 22 also rotatably mounted in the frame members II and I2, so that the shaft 22 will be intermittently rotated with the shaft I2 upon oscillating movements of the lever 22 and pawl 24. Upon the shaft 22 is secured a stripperactuating member 22. As shown, this member is in the form of a wheel having an uneven or undulating surface, and, as illustrated, is provided with ratchet teeth 24, although the particular form of teeth upon this wheel may be varied if desired.

As shown more especially in Figs. 2, 5 and 6.

stripper members

22 and 21 are provided, one upon each side of the feed member i1. These stripper members are carried by arms or levers 22 and 22 pivoted at their rear ends to the end frame at 40 and ll. These arms project forwardly from their pivots, and the

stripper members

22 and 21, as illustrated, constitute upwardly bent forward ends of these arms, although they may or may not be formed integrally with the arms, as is desired. As shown in Fig. 4. these arms are narrower at their rear ends than at their forward ends, so as to provide a space therebetween for the passage of the tape II, and at the same time provide that the stripper members 2i and 21 will lie closely adjacent the side faces of the feed roll ii.

A yoke 42 spans the feed roll l1, and is connected at its ends to the stripping

members

25 and 21 so as to rigidly secure these members together. A spring 42 is secured at its upper end to this yoke, and at its lower end to a plate carried by the frame, which spring normally urges the stripping members downwardly or away from the shaft i2, and therefore away from the tape on the feed roll [1; On the lower surface of the arm 22 is provided 2. lug or tooth 42 designed to be engaged by the teeth of the wheel 22, and the spring 44. as will be obvious. maintains this lus in engagement with the wheel 22. As the wheel rotates in a counterclockwise direction, as viewed in Figs. 5 and 6, during the operation of the machine, it will be seen that this lug will be moved from one tooth space to another, and in so doing will eflect the raising of the

arms

22 and 22, and cause the

strippin members

22 and 21 to be advanced or moved against the lower surface of the tape and strip it from the feed roll. It may also be noted that the pinion 2| is smaller than the pinion 22, so that the shaft 22 will rotate at a greater speed than that of the shaft ll, thus causing a more or lessrapid vibratin action of the

strippers

22 and 21. These members will strike the tape intermittently at closely spaced points, and strip it from the feed roll, as the latter is rotated forwardly to advance the tape. It will also be apparent that the member 42 will act as a holding pawl to prevent reverse rotation of the shafts l2 and 22 during return movement of the lever 22 and pawl 24.

Mounted upon the frame members H and I2, above the feed roll I1, is a severing blade 42, herein shown as a tear-off blade having a serrated edge 42 across which the free end of the tape may be drawn to be severed from the supply roll, although I do not wish to be limited to a tear-off blade, as the invention is applicable to a shearing blade as well. It will be understood that, as this severing member is above the tape, it will contact with the non-tacky side thereof. It has been found, however, that, after repeated tearing operations, there will be a sufllcient engagement between the tacky material on the lower side or the edges of the tape and the severing blade 42 to cause the tape to tend to adhere thereto, and interfere with a subsequent feeding operation. To prevent such an eventuality, I provide a strippin member 22 comprising a resilient plate secured at the lower face of the severing blade by rivets or the like ll.

It will be noted that the forward end of the stripping member normally stands in a position spaced from the forward edge of the severing blade 48. When the free end of the tape has been moved upwardly against the severing blade, to be torn off as shown in Fig. 7, the forward end of the stripping member will also be moved upwardly against the severing blade. However when the free end of the tape has been severed, the inherent resilience of the strippin member 5. will cause it to move away from the blade to the position shown in Fig. 5, and strip the tape from the blade 48 so that the end of the tape will be free to be advanced by the feed roll upon a subsequent operation. It will be appreciated that it will be easier to break the engagement between the end of the tape and blade ll than to strip the tape from the feed roll, or to advance the feed roll. The latter would, of course, entail drawing the tape from the supply roll, which in the case of pressure-sensitive tape requires considerable effort. As comparatively little effort is required to strip the end of the tape from the blade, the stripper 50 will need only a relatively weak spring action which will not interfere with the severing operation.

The operation of the machine will be clear from the above description to those skilled in the art, but may be briefly described as follows: As explained, the lever 22 and pawl 24 have a oneway connection with the shaft It, so that, upon forward movement of the fingerpiece 28, the shaft itand feed roll i'l will be moved in a clockwise direction, as shown, for example, in Figs. 5 and 6. Upon a reverse stroke of the lever 22 and pawl 24, the latter will ride freely over the teeth of the pinion 2|, and no movement of the shaft II will be effected. Upon clockwise movement of the feed roll H, the tape it will adhere thereto and be drawn from the supply roll and advanced from the machine. During this movement of the feed roll, the wheel 33 will be moved in a counterclockwise direction, and thus effect vibration of the

strippers

38 and 31, which will strip the tape from the feed roll I! so as to present a free end, as shown in Fig. 5, extending from the machine, to be readily grasped by the operator. When a sufllcient length of tape has been advanced by the machine, the user will grasp the free end of the tape and sever it against the serrated edge 48 of the severing member It. The stripper ill will then positively strip the unsevered end of the tape from the knife 48, so that it will present a free end when fed forwardly during a subsequent operation.

It will be noted that the stripping means I! and ll, and the stripping means 50, are upon opposite sides of-the tape, and are substantially opposite each other, or contact the tape at substantially opposite points, the contact being made at approximately the point at which the tape is severed. In this instance, this point is forwardly of the shaft Ii, although the invention is not limited in this respect. It is, of course, necessary that a sufllcient length of the tape i9 will be left in contact with the surface of the feed roll to cause it to adhere to the roll with a suflicient force to draw the tape from the supply roll.

While I have shown and described a preferred embodiment of my invention, it will be understood that it is not to be limited to all of the details shown. but is capable of modification and variation within the spirit of the invention and within the scope of the claims.

What I claim is:

1. In a machine for feeding pressure-sensitive tape, a frame, feeding means mounted on the frame including a rotating member to which the tape adheres, a vibratory stripping device mounted on the frame independently of said feeding means and disposed, laterally of said member, and means for continuously vibrating said device to cause it to engage the tape and strip it from said member.

2. In a machine for feeding pressure-sensitive tape, a frame, feeding means including a tape-advancing member mounted on the frame and having a traveling surface to which the tape adheres, a vibratory stripping member mounted on the frame independently of said tape-advancing member, and means for continuously moving said member to and fro across the path of the tape on said surface to strip the tape from said advancing member.

3. In a machine for feeding pressure-sensitive tape, a frame feeding means including a tape-advancing member mounted on the frame and having a traveling surface to which the tape adheres, a vibratory stripping member mounted on the frame independently of said tape-advancing member, and means for continuously moving said member to and fro across the path of the tape on said surface to strip the tape from said advancing member, said stripping member being moved in a direction substantially transverse to that of the travel of the tape.

4. In a machine for feeding pressure-sensitive tape, feeding means including a tape-advancing member having a traveling surface to which the tape adheres, said surface being relatively narrow with respect to the width of the tape, a vibratory stripping member on each side of said surface, and means for moving said stripping members to and fro across the path of the tape projecting from the edges of said surface to strip the tape from said advancing member.

5. In a machine for feeding pressure-sensitive tape, feeding means including a tape-advancing member having a traveling surface to which the tape adheres, said surface being relatively narrow with respect to the width of the tape, a vibratory stripping member on each side of said surface and below the same, and means for moving said stripping members up and down across the path of the tape projecting from the edges of said surface to strip the tape from said advancing member.

6. In a machine for feeding pressure-sensitive tape, including a frame, feeding means including a rotating tape-feeding member to which the tape is adapted to adhere, means for intermittently rotating said member, a vibratory stripping member mounted on the frame independently of said tape-feeding member and disposed adjacent said feeding member, means for continuously moving said stripping member toward and from the tape on said feeding member during rotation of the latter to strike the tape and strip it from the feeding member,

' said means being actuated by said rotating memher.

7. In a machine for feeding pressure-sensitive tape, feeding means including a rotating tapefeeding member to which the tape is adapted to adhere, means for intermittently rotating said member, a vibratory stripping member pivoted on the frame adjacent said feeding member, means for continuously vibrating said stripping member to move it toward and from the tape on said tory stripping member mounted adjacent said feeding member, an arm pivoted on the frame and connected to said stripping member, a wheel rotatably mounted on the frame having an uneven surface adjacent said arm, and means on the arm to engage the surface of said wheel to vibrate the stripping member across the tape path.

9. In a machine for feeding pressure-sensitive tape, a frame, feeding means including a rotating tape-feeding member mounted on the frame to which the tape is adapted to adhere, means for intermittently rotating said member, a vibratory stripping member mounted adjacent said feeding member, an arm pivoted on the frame and connected to said stripping member, a wheel rotatably mounted on the frame having an uneven surface adjacent said arm. means on the arm to engage the surfaceof said wheel to vibrate the stripping member across the tape path, and a spring urging said arm toward the wheel.

10. In a machine for feeding pressure-sensitive tape, feeding means including a tape-advancing member to which the tape adheres, a stripping member to engage the tape and strip it from said feeding means, a tear-off blade against which the stripped end of the tape may be severed, and a resilient stripping member associated with said blade to strip the unsevered end of the tape therefrom, both said stripping members engaging the tape at points in close proximity along its length but on opposite sides thereof. 1"

11. In a machine for feeding pressure-sensitive tape, feeding means including a tape-advancing member to which the tape adheres, a stripping member to engage the tape and strip it from said feeding means, a tear-off blade against which the stripped end of the tape may be severed, and a resilient stripping member associated with said blade to strip the unsevered end of the tape thereforrn, both said stripping members being disposed substantially opposite the operative edge of said blade.

ALFRED P. KRUEGER.

REFERENCES CITED The following references are of record in the file of this patent: