US2108496A - Gummed tape dispensing machine - Google Patents

Description

7 Feb. 15, 1938. L. LINK GUMMED TAPE DISPENSING MACHINE Fil ed April 16, 1936 INVENTOR ATTORNEYS Patented Feb. 15, 1938 UNITED STATES.

PATENT OFFICE amass GUMMED TAPE. msrsnsmo moms Louis Link, New York, n. Y. Application April 10, me, Serial m. 74,628

Claims. (Cl. ail-2.4)

This invention relates to a feed mechanism anda strip-feeding machine which cuts oil differing,-

predetermined lengths of stripwith relative ac- V curacy; to provide such a machine wherein the momentum of the moving parts does not interfere with said accuracy; to provide such a machine, manually operated, wherein the operative's finger, when it stops, immediately acts as a stop for the feeding part of. the machine; to provide such' a machine with cam surfaces positioned so that, when it is intended that the feeding part of the machine shall stop, the operator's motivating finger, although acting as a stop, will not be pinched; and to provide such a machine wherein a stopping abutment is generally in the path of the manually-operated parts but does not interfere directly with their motion.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

from the left of Fig. 1 with the side of the casting removed;

Fig. 3 is a view of a detail of the machine shown in Fig. 1 and taken along the finest-3; and

mechanism shown in Fig. 2. V

Tape-servihg devices have been made heretofore wherein themotion of a wheel through a predetermined are advanced the material, to

55 be dispensed or treated, a predetermined amount.

The invention accordingly comprises the feasection. of the machine shown in Fig. 1 and taken.

Fig. 4 is a perspective view of a portion of the There was, among other drawbacks in those earlier machines, the difficulty that there was no 1 assurance that the are turned through by the wheel would be that arc predetermined as correst to advance the material by the desired amount. The momentum of the various moving parts differed from operation to operation with the attack of the operator and with other conditions. Hence different quantities of material were treated,before the momentum was overcome in each case, and the feeding parts were at rest.

The present invention overcomes, among others, the above-mentioned ineptitudes.

In the drawing, I0 denotes a casing in which .there is material, 1. e., a narrow roll it of paper,

ment 08, such as an inverted brush. Various sections of the strip 85 are cut off at the bar l9 by a knife N in a manner to be described.

One of the rollers i6 is an idler carried by movable cap 20, which cap may be a part of the casing and which is activated by spring 2! to hold the said one roller against the other. A

gear 22 on the end of the fixed roller it engages an interior gear 23 on a rotatable element M which may be generally termed wheel-like and which is journaled on to the casing as-at 25. A rotationof the wheel 24 causes an advancement of the strip l5.

Associated with the wheel 24 and preferably with the circumference thereof, are a plurality of members adapted to assist in the motivation of wheel 24. These may be in the form of manuallyengageable, circumferentially spaced, radially extending members 26. As shown, they each have a radially extending surface 21 and a surface 28 at an angle to the radius to said surface 28. They may lie in a trough 29 in the rim of the wheel 24. They are each provided with an opening liliextending therethrough, with one dimension perpendicular to the radius, parallel to the openings in the others, and in the form of a notch from the outermost tip thereof. Surfaces 21 may be formed to flt a finger and each surface 28 may extend from the inner edge of one surface 21 to the outer edge ofthe next surface 21.

An abutment element ii is permanently fixed in the plane of the openings 20 and extends radially nearer the axis of the wheel than outermost portions of the members '24. It is attached to an arm 32 as shown in Fig. 4. It is in the path of that part of an operator's hand which engages a surface 21 of the wheel 24. As viewed from the right in Fig. 1, wheel 24 is movable counter-clockwise. Abutment 3|, in its position of rest, is radial to the axis of wheel 24 and its surface may be in the plane of a surface 21 of a member 26 into the slot 30 of which the abutment extends. The abutment preferably does not move counter-clockwise with reference to the axis of wheel 24.

A finger may be placed on surface 21 of any element 28 and the wheel 24 rotated until the finger is stopped by element 3|. The amount of strip l thus moved forward depends upon the distance between the surface 21 chosen and the abutment 3|. The distance between members 28 may be predetermined to give a certain advance to the strip l6, e. g., one inch. Indices may be marked along a part of the casing ll, adjacent the rim of the wheel 24, to point out to the .operator the amount of strip advance when the finger is inserted on the corresponding member 26 and moved to the abutment 3|.

Means are provided for cutting strip l5 at knife bar I! after the wheel 24 and the strip have come to a stop. Such means may be independent of abutment II. It is preferred that such means he so arranged that the finger which has beenstopped by abutment 3| may next, and from the stop position, operate the cutting mechanism. Thus lever 34 may also be fixed to arm 32 and may be rotated, with that arm, counter-clockwise, as viewed from the right in Fig. 1, about pivot 23 in the casing. Another arm, 35, fixed to arm 22, extends through the casing l0 and against the force of spring 36 and by means of link 31, lifts the cutting knife l9 when lever I4 is moved counter-clockwise.

The moistening element I! may be a brush supported in, and reaching out of, a container 38 for liquid.

'A portion 29 of the backfend, top and a side wall may be hinged as a unit at 4. sothat access may be had to the interior of the casing Ill.

The operation'of the device is as follows:' A finger is placed upon one of the surfaces 21 and moved toward abutment 2!. Wheel 24 is moved thereby as are also gears 22, 22, roller and strip l5. when the finger meets abutment 2i, it comes to a stop and in all operations it always comes to a stop at the same place. In that position, link 21 may be radially in line with the pivot 4| of the knife 18, or a stop may be provided to give the same effect. Any momentum inthe finger is delivered to the abutment and not to the wheel 24, which therefore comes to an immediate stop, assuming there is a normal amount of rotational friction in the mounting of the wheel. Any momentum which the'wheel might have and which would not be immediate y overcome by the said friction, is overcome by the surface 2' which begins to andimmediately'does act as a cam against the end of the finger. The latter may be started to be shoved radially outward by this action, and thus it is not caught by a su fiat member coming down onto the finer nail. 'nie linger is next milled-away from wheel 24 while it is at the sametimepushed down so as to rock the bell crank 32, 35 and thereby operate the knife l9.

Since certain changes may be made in carrying out the above method without departing from the scope of the invention, it is intended ,that all matter contained in the above description shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claimas new and useful and desire to secure by Letters Patent, is:

1. In a device of the character described, the

con hbination comprising feeding means, operative mec anism for said feeding means comprising a rotatable means, a plurality of manuallyengageable, spaced members thereon and substantially fixed means in the path of that part of a hand which is in engagement with one of said members, and in motion with said rotatable means, each of said members in part surrounding said fixed means as said each member passes said fixed means.

2. In a device of the character described, the combination comprising feeding means, operative -mechanism for said feeding means comprising movable means having a manually-engageable portion thereof, substantially fixed means in the path of a part of a hand which engages said portion and moves with said movable means, said part being, to a substantial extent, surrounded by other parts of the hand which are in contact with said manually-engageable portion, and stopping means associated with said movable means, said stopping means including a surface which is movable in a direction which, at a predetermined position of said stopping means, is not perpendicular to the plane of said surface, said stopping means being associated with said movable means in a position such that .a further motion of said movable means, after the said part of the motivating hand has become fixed against said fixed means, brings said surface of said stopping means substantially immediately against the fixed hand.

3. In a device of the character described, the combination comprising feeding means, operative mechanism for said feeding means comprising a rotatable means, a plurality of manually-engageable, spaced members thereon and substantially fixed means in the path of that part of a hand which is in engagement with one of said members and in motion with said rotatable means,

- said members having a cam surface whereby when a finger is held against said fixed means.

a succeeding member, as said rotatable means continues under momentum, jambs said surface against the finger, but does not pinch the finger.

4.- In a device of the character described, the' combination co'mprising feeding means, operative mechanism for said feeding means comprising a rotatable means, a plurality of nianually-' ama-ice spaced members engageabie by the hand of the operator, a measuring scale adjacent the path of movement of said members, and abutment means arranged in the path of movement of said members and acting in conjunction with said scale and said wheel members to predetermine the lengths of strip fed from the machine, said members having apertures therein in registry with said abutment means whereby the hand of the operator is stopped when it reaches said abutment means but said abutment means does not directly interfere with the motion of said wheel.

6. A strip feeding machine comprising a casing, strip feeding means therein, operating mechanism for said feeding means including a manually-rotatable wheel having circumferentially spaced members engageable by the hand of the operator, a measuring scale adjacent the path of movement of said members, and abutment means arranged adjacent the path of movement of said members and acting in conjunction with said scale and said wheel members to predetermine the lengths of strip fed from the machine, said members extending radially and-having an opening therein extending through them along the arc of a circle about the axis of said wheel and said abutment means being substantially fixed on a portion of said are. 7

7. A strip feeding machine comprising. a casing, strip feeding means therein, operating mechanism for said feeding means including a manu-- path of movement of said members and acting in conjunction with said wheel members to predetermine the lengths of'strip fed from the machine, said members having apertures therein in registry with said abutment means whereby the hand of the operator is stopped when it reaches said abutment means but said abutment means does not directly interfere with the motion of said wheel.

8. In a device of the character described, the

combination comprising feeding means, operative mechanism for said feeding means comprising movable means having a manually-engageable portion thereof, whereby a moving hand may engage and move said movable means, means adapted for stopping the hand, which is moving said movable means, at a predetermined position, and means for preventing a farther momental motion beyond said predetermined position, of that part of the hand engaging said movable means.

9. In a device of the character described, the combination comprising feeding means, operative mechanism fofsaid-feeding means comprising -movab1e means having a manually-engageable portion thereof, whereby a moving hand may engage and move said movable means, means adapted for stopping the hand, which is moving said movable means, at a predetermined position,

and means adapted for preventing a farther momental-motion, beyond said predetermined position, of that part of the digit engaging said movable means. a

LINK.

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