US2647746A

US2647746A - Dispenser for pressure-sensitive tape

Info

Publication number: US2647746A
Authority: US
Inventors: Alfred P Krueger
Original assignee: DERBY SEALERS Inc
Current assignee: DERBY SEALERS Inc
Priority date: 1951-09-26
Filing date: 1951-09-26
Publication date: 1953-08-04
Anticipated expiration: 1970-08-04

Description

Aug. 4, 1953 KRUEGER 2,647,746

DISPENSER FOR PRESSURE-SENSITIVE TAPE Filed Sept. 26, 1951 2 Sheets-Sheet 1 W Q lNYLExNT/OR W MW ATTORNEYS -A. P. KRUEGER DISPENSER FOR PRESSURE-SENSITIVE TAPE Filed Sept. 26, l95l Aug. 4, 1953 2 Sheets-Skeet 2 ATTORNEYS Patented Aug. 4, 1953 DISPENSER FOR PRESSURE-SENSITIVE TAPE I Y Alfred P. Krueger, Stratford, Conn, assignor to Derby Sealers, Incorporated, Derby, Conn, a corporation of Connecticut 1 Application September 26, 1951, Serial No. 248,395 I 11 Claims. 1

This invention relates to tape dispensing machines and more particularly to a machine for dispensing pressure-sensitive tape or tape which ist'acky upon one side.

The dispensing of tape of this character is attended with greater difficulty than that of gummed tape as the tacky surface will cling to any part of themechanism with which it comes in contact and, therefore, will adhere to a feeding member which is used to draw it from the supply roll. However, advantage may be taken of this characteristic of thetape as it will cling to a feed roll or-likefeeding member, and by moving the latter the tape may be drawn from the supply roll.

If, however, the dispensed portion of the tape is to present a free end projecting from the machine so that it may be grasped by the fingers and torn ofi" against a tear-off blade, it is necessary to provide some means for stripping the tape from the feeding device, and it is contemplated by the present invention to provide novel mechanism for stripping the tape from the feeding means so that a positive stripping action will be'eflected and at the same time a relatively few parts employed so that a compact dispensing mechanism may be provided.

As illustrated, the feeding device comprises a plurality ofspaced elements such as pins extending transversely of the tape and connected to a rotatable supportin the form of a disk-like member. The tacky side of the tape adheres to the pinspand, asthelatter are moved, will be drawn from the supply roll. The stripping device as illustrated to strip the tape-from the feed element islikewise a rotatable member having a plurality of blades or paddles adapted. to engage the tacky 'sideof the tape and strip itfrom the tape-contacting elements of the feeding device. Moreover, the paddles or stripping elements are'designed to be moved across the path or orbit of the feed elements between the latter, and the arrangement issuch that the spaced elements or pins of the feed member will engage and drive the elementsof the stripping device so that no separate drive means is required for the latter.

Also, the arrangement is such that the periphcralspeed of the stripping elements, or that .part thereof which engages the tape, is slightly greater than the speed of the feed elements so that the stripping elements will not only serve to strip the tape from the feeding elements, but willthemselves be stripped from the tape so that "the "free end of the latter will tend to stand outwardly fromthe feeding device 30 be engaged by the fingers and will'not tend to be carried around by the stripping elements so as to be re-engaged by the "feed elements.

One object of the invention is to provide a new and improved "device for dispensing pressuresensitive tape.

A further object-of the invention is to provide a device for dispensing pressure-sensitive tape which comprises a feed member to engage the tacky side of the tape and draw it from the supply roll and a'stripping means 'to strip the tape from the feeding "member, the latter being engaged and driven by the 'feed member.

A still further object of the invention is to provide a tape dispensing machine of the type described above which will have relatively few parts and will be of compact form so that'it may be economically made and occupy relatively small amount of space. Y I

A still further object of the invention isto provide a tape dispensing mechanism comprising a tape-feeding wheel or element having a plurality of spaced members extending transversely of the tape to engage the tacky side of the same and draw it from the feed roll, and a stripping element having a plurality of blades or paddles, which stripping element is mounted within the orbit of saidspaced members and extendsthroug'h the spaces between such members to engage the tape andstrip it from the feeding member.

To these 'and other ends the invention consists 'in the novel (features and combinations of parts to behereinafter described and claimed.

In the accompanying drawings: Fig. 1 is a side elevational view of a tape dispensing mechanism'embodying my invention;

Fig. 2 is a front elevational'view thereof; Fig. 3 is a partial sectional view on line 33 of Fig. '2;

Fig.4 is a transverse sectional view on line 6-4 of. Fig. 3; and

Fig. 5 is an elevational view of the front-part of the machine showing the side opposite that H,- as at 38.

step disk 23.

Adjacent the forward end of the frame a shaft I9 is rotatably mounted in the plates I l and I2, and to this shaft is secured a crank or lever 20, the crank being provided with a hub 2| through which is threaded the securing set screw 22. Rotatably mounted on the shaft between the lever and the plate H is a. stop disk 23 having an arcuate slot 24 therein which slot receives an adjusting screw 25 so that upon loosening the screw, the disk may be set in various positions of rotative adjustment as permitted by the length of the slot 24. Upon this disk 23 is provided a stop lug 26 (Fig. 1) which is adapted to engage the lever 20 upon its downward or feeding movement, and a stop member 21 is secured to the plate H to engage the upper end of the lever. In this way the throw of the lever is limited so that the operator may dispense a predetermined quantity of tape. For this purpose the member 23 is provided with indications 28 to indicate to the operator the length of the tape which will be dispensed at various settings of the stop disk Secured to or formed integrally with the shaft I9 is a spring hub 30 (Fig. 4) having a reduced portion 3| embraced by an expanding spring 32, one end of which is secured to the member 3|, as shown at 33. The spring 32 is received within the barrel 34 which is secured to a sleeve 35 rotatably mounted upon the shaft l9. As will be understood, this constitutes a one-way driving connection between the shaft 19 and the spring barrel or drum 34 so that when the shaft is rotated in one direction the member 34 will also be rotated, but when the shaft is rotated in s the other direction the spring will slip freely about the interior of the barrel and the latter will not be driven.

In order to prevent any rearward movement of the barrel 34, a spring 31 is disposed in embracing relation to the sleeve 35 (Fig. 2) and one end of this spring is secured to the frame member This spring will act as a pawl or detent and prevent rearward movement of the sleeve 35, and, therefore, of the drum 34.

Also secured to the sleeve 35 so as to rotate with the barrel or drum 34 is the feed element of the device which comprises the disk and a plurality of pins 4|. These pins are secured to the disk in spaced relation and project therefrom at substantially right angles to the plane of the disk so as to extend transversely across the tape as it comes from the roll, the tape being indicated at 42 (Figs. 3 and 4) It will be seen that the pins 4| engage the inner or tacky surface of the tape at spaced points and adhere thereto so that when the feed element is rotated by movement of the handle or lever 20 or in a forward and clockwise direction, as shown in Fig. 3, the tape will be drawn from the roll in a length determined by the setting of the In order that the lever 20 may normally be urged in a counter-clockwise direction so as to stand against the stop member 21, as shown in Fig. 1, a spring 43 is secured at one end to a pin 44 set in the frame member l2, and the other end of this spring is secured to a pin 45 secured in th member 30. Therefore, when the operator releases the lever, the spring 43 will restore it to its normal position against the stop 21, as shown in Fig. 1.

In order to strip the tape from the feed elements 4! a stripper is provided which, as illustrated, is in the form of a paddle wheel 46 (Fig. 3). This wheel is rotatably mounted upon a shaft 47 secured in the side frame l2 and comprises a hub 48 from which projects a plurality of stripping elements in the form of blades or paddles 49. The edges of each of these paddles may be notched or serrated as shown at 50 (Fig. 2) in order to decrease the area of contact between the stripping elements and the tacky side of the tape.

As shown in Fig. 3, the shaft 4'? is so disposed with relation to the feeding members 4!, and the length of the stripping elements 49 is such, that the latter will project outwardly between the pins 4| and engage the tacky side of the tape and strip it from these pins. Also, the pins 4! will engage one of the blades or paddles 49 in succession and serve to rotate the stripping element so that it will perform its intended function. With this arrangement no gears or other driving means will be required for driving the stripper. It will also be apparent that as the extreme edges of the blades or paddle members 49 which engage the tape will be at a greater distance from the shaft 41 than the pins 4!, thesetape-engaging edges of the paddles 49'will have a greater linear speed than the pins 4! or tape 42 so that the stripping elements 49 will themselves be stripped from the tape during the operation of the device and upon manipulation of the lever 20 the dispensed end of the tape will project from the machine, as shown in dotted lines at 5| (Fig. 3).

In order that the dispensed length of tape may be severed a knife or severing member is provided, as shown at 52. This member is secured to the bight portion 53 of a U-shaped frame, the legs 54 of which are pivoted to the frame members ll and I2 at 55 (Figs. 2 and 5). The frame is shown in its normal position in Figs. 1 and 3, and it will be seen that in this position the tearing edge of the knife 52 stands in relatively close proximity to the tape. When, however, it is desired to load the machine or to place therein a fresh supply of tape, the knife frame may be swung from the full-line position to the dotted-line position shown in Fig. 5 so that free access is provided. to the pins 4! of the feed element in order that the new length of tape may be engaged with these pins. A spring 5'! is secured to a lug 58 on one of the leg members 54 of the knife frame, the other end of this spring being secured at 59 to the plate 12 so that the spring will serve to release.- bly hold the knife frame in either the full or dotted-line position to which it is moved, the spring passing dead center position with respect to the pivot 55 when the frame is moved from one position to another.

The operation of the device is believed to be clear from the foregoing. It may be briefly stated, however, that the handle or lever 20 is intended to be oscillated between the fixed stop 2'! and the adjustable stop 26 to determine the length of tape dispensed from the machine. Upon the downward or clockwise movement of the lever 20, as shown in Fig. 3, the disk 40 will be rotated and a predetermined length of tape dispensed by engagement of the tacky side thereof with the feed elements 4|. The latter will engage the paddles or blades 49 of the stripper 46, and as the notched or serrated edges 50 of these members engage the tacky side of the tape, the latter will be stripped from the pins 4!, and as previously described, the stripper will also be stripped from the dispensed length of tape so that it will project outwardly from the device,

' within the scope of the claims.

What I claim is:

1. In a tape-dispensing machine, a frame, a

feeding member carried by the frame having spaced elements each of which extendsj'in a "(llrection across the path of the tape and to which the tape adheres, means for moving said member toeifect feeding of the tape by the adherence of the tape .to said elements, and a rotatably mounted Stripping member onthe side of said feed elements opposite that engaged by the tape and having spaced elements each of which extends transversely of the path of the tape and beyond the elements of the feed member and is movable between the elements of said feeding member, and the elements of the feedin member engaging those of the stripping member to actuate the latter.

2. In a tape-dispensing mechanism, a frame, tape-feeding means thereon comprising a rotatably mounted member, said member having a plurality of spaced feed elements disposed substantially transversely of the path of the tape and to which the tape adheres, a stripping member mounted for free rotation on an axis disposed within the orbit of said feed elements and having radially projecting stripping elements extending between and beyond said feed elements to be engaged and moved by the latter.

3. In a tape-dispensing machine, a frame, tape-feeding means rotatably mounted thereon carrying a plurality of spaced tape-engaging feed elements to engage the tacky side of the tape, a stripping member rotatably mounted on the frame to rotate about an axis within the periphery of the feed elements having stripping elements extending between and beyond the feed elements to engage the tape and strip it from the feed elements, and said stripping elements being engaged by the feed elements to effect rotation of the stripping member.

4. In a tape-dispensing machine, a frame,

tape-feeding means rotatably mounted thereon carrying a plurality of spaced tape-engaging feed elements to engage the tacky side of the tape, a stripping member rotatably mounted on the frame to rotate about an axis within the periphery of the feed elements having stripping elements extendin between and beyond the feed elements to engage the tape and strip it from the feed elements, said feeding elements being interengaged with said stripping elements to eifect rotation of one thereof when the other is rotated.

5. In a tape-dispensin machine, a frame, tape-feeding means rotatably mounted thereon carrying a plurality of spaced tape-engaging feed elements to engagethe tacky side of the tape, a stripping member rotatably mounted on the frame to rotate about an axis within the periphery of the feed elements having stripping elements extending between and beyond said feed elements to engage the tape and strip it from the feed elements, and means on said feeding means to engage said stripping elements and effect stripping movement thereof upon the rotation of the feeding means.

6. In a tape-dispensing machine, a frame,

6 messes-dine means rotatably. mounted thereon carrying a plurality of spaced tape-engaging feed elements to engage the tacky side of the tape, a stripping member rotatably mounted on the frame to rotate about an axis within the periphery of the feedelements having stripping elements extending between and beyond said feed elements to engage the tape and strip it'from the feed elements, and said stripping elements being engaged by 'the feed elements to effect rotation of the stripping member, said stripping elements comprising a plurality of paddle-like members the outer edge of which engages the a tape.

tape-feeding means rotatably mounted thereon 7. In a-tape-dispensing machine, a frame,

carrying a plurality of spaced tape-engaging feed elements to engage the tacky side of the tape, a stripping member rotatably mounted on the frame to rotate about an axis within the periphery of the feed elements having stripping elements extending between and beyond said feed elements to engage the tape and strip it from the feed elements, said stripping elements being engaged by the feed elements to effect rotation of the stripping member, said stripping elements comprising a plurality of paddle-like members the outer edge of which engages the tape, and said tape-feeding elements comprising pin-like members extending substantially transversely of the tape path.

8. In a tape-dispensing machine, a frame, tape-feeding means rotatably mounted thereon carrying a plurality of spaced tape-engaging feed elements to engage the tacky side of the tape, a stripping member rotatably mounted on the frame to rotate about an axis within the periphery of the feed elements having stripping elements extending between and beyond said feed elements to engage the tape and strip it from the feed elements, and said stripping elements being engaged by the feed elements to effect rotation of the stripping member, said stripping member comprising a hub carrying a plurality of radially projecting members the outer edges of which engage the tape.

9. In a machine for dispensin pressure-sensitive tape, a frame, tape-feeding means rotat ably mounted on the frame, said means comprising a disk-like member having a plurality of spaced pins projecting from the face thereof in a direction substantially transverse to the path of the tape to which the tape adheres, a stripping member rotatably mounted on the frame within the orbit of said pins and having radially disposed elements projecting between and beyond said pins, and the latter being mounted to engage an intermediate portion of said radially disposed elements to effect rotation of the stripping member.

10. In a tape-dispensing machine, a frame, tape-feeding means rotatably mounted thereon carrying a plurality of spaced tape-engaging feed elements to engage the tacky side of the tape, a stripping member rotatably mounted on the frame to rotate about an axis within the periphery of the feed elements having stripping elements extending between and beyond said feed elements to engage the tape and strip it from the feed elements, and said stripping elements being engaged by the feed elements to effect rotation of the stripping member, said stripping member comprisin a hub carrying a plurality of radially projecting members the outer edges of which engage the tape, and the engagement between the stripping and feeding elements being such that the engaging edges of said stripping elements are moved at a speed in excess of that of the tape.

11. In a tape-dispensing machine, a frame, tape-feeding means rotatably mounted thereon carrying a plurality of spaced tape-engaging feed elements to engage the tacky side of the tape, a stripping member rotatably mounted on the frame to rotate about an axis within the periphery of the feed elements having stripping elements extending between and beyond said feed elements to engage the tape and strip it from the feed elements, and Said stripping elements being engaged by the feed elements to effect rotation of the stripping member, said stripping elements comprising a plurality of paddle-like members the outer edge of which engages the 8 tape, and the outer tape-engaging edge of each paddle-like member being notched to lessen the area of engagement with the tape.

' ALFRED P. KRUEGER.

References Cited in the file of this patent UNITED STATES PATENTS 10 Number Name Date 1,832,007 Eckland Nov. 17, 1931 1,972,851 McCarthy Sept. 4, 1934 2,044,182 Ott June 16, 1936 2,411,917 Wooster Dec. 3, 1946 15 2,485,002 Krueger Oct. 18, 1949 2,507,446 Krueger May 9, 1950 2,522,047 Krueger Sept. 12, 1950 2,522,282 Krueger Sept, 12, 1950