US2145506A - Tape stripping, measuring, and severing device - Google Patents

Description

TAPESTRIPiING, MEASURING, AND SEVERING DEVICE Filed March 17, 1937 s Sheets-Sheet 1 ATTORNEYS B. DE MATTIA 1939- B. DE MATTIA 2,M,fi-

TAPE-STRIPPINGI MEASURING, AND SEVERING DEVICE Filed March 1'7, 1957 3 Sheets-Sheet 2 if/" BY 2 1/7 X54 A'rfoaNE Yi Jan. 31, 1939. 2,145,50

' TAPE STRIPPING, MEASURING, .AN D SEVERING DEVICE Y B. DE MATTIA Filed March 17, 1937 '5 Sheets-Sheet 5 ATTO R N EYG Patented Jan. 31, 1939 UNiTE-D STATES PATENT OFFICE TAPE STRIPPING, MEASURING, AND SEVERING DEVICE Barthold De Mattia, Clifton, N. J.

Application March 17, 1937, Serial No. 131,310

18 Claims. (01. 16445) This invention relates to a device for stripping nism. Means :are'provided for varying theretromaterial from a roll and for measuring and grade or measuring stroke of the arm, and in severing it in predetermined lengths. this way variable'lengths of tape may be severed.

In many industries, particularly those engaged While the arm is partaking of its retrograde in the manufacture of electrical apparatus, a movement on the measuring stroke, the drum considerable amount of material in rolls, as for remains relatively stationary, this being effected instance, adhesive tape is used, particularly in by the tape itself which adheres to the anvil short lengths, i. e., fractional parts of a foot. after each le gth o t p is SeVeI'ed- When such lengths are required, it is the pres- Although the arm for effecting the rotation ent practice to strip the tape or other material of the'd Gentle-manually Operated, if desired, from the roll by hand and use ordinary scissors it is 'proposed'tooperate this instead vbymeans of to sever the desired lengths. While there is praca pedal, since this leaves one hand of the opertically no skill involved in the operation, it is a ator free for other Work. The feedstroke of the tedious one, particularly where large numbers drum actuating armiis-reffected 111 e active of the small lengths are needed, It is l a, stroke of the foot pedal, suitable intermediate wasteful method, since, in order to save time, it mechanism being provided betwee t e t peda is the practice to sever several strips at a time and thearm to reduce the force e e e y the and lay them one over another at an angle so foot. The retrograde or measuring stroke of the that they may be picked up easily. Where the arm s likewise effected-10y the foot P dal, t material has adhesive qualities, there is a tendlatter being des in Such W y at it Will ency for the strips to adhere together and, when return .toits'normal position under the influence this occurs, the user, rather than take the time of g y.

to separate the strips, prefers to throw them away. Other features of the machine will be apparent The present invention contemplates a mechanas the'description of theinvention proceeds.

, ical device for stripping the material from the Referring to the gS roll and which is adjustable to permit any de- Fig- 1 a iplen View Of the improved ap sired length within limits to be stripped and sevstrippin and severing machine; ered. Essentially, the device consists of a ro- Fig. 2.is;a side elevation of the machine shown tatable drum over which the material (hereinin Fi 7 after referred to as tape) is fed from a roll Fig- 3 e n en r Side elevation of a pormounted upon a, support which 111 permit the tion of the machine, partly in section, to show tape to unwind as it is fed over the drum. From e et 0f t e Operating mechanism;

the drum, the tape is brought down over an anvil Fig. =4 is a'vertical sectional view on line 4-4 in cooperating relation with which there is an of Fig.

' arm which grips the tape after a predetermined is a se ti 011 line of g- 3;

amount has been fed from the roll. This arm is Fig. 6 is asectional view on line 6--6 of Fig. 3; equipped with a sharp-edged tool and, while the F g- 718 an e la ed partial end vieW, look tape is held between the arm and the anvil, the a the-machine from t le in Fi measured strip can be torn off with the assist- 3 is Sectional View On line of 7;

ance of the tool. Fig. 9 is a vertical sectional view on line 9 9 4() As the tape passes over the drum, it will adhere of Fig.

to the surface thereof over an area which, to- 10 S a eta l i Partly [in Section, of

gether with the adhesiveness of the tape, prothe pawl and ratchet mechanism for driving the duces a sufiicient pulling force, as the drum is drum; and

' rotated, to strip the tape from the roll. The arm Fig. 11 is a sectional view on line ||II of which carries the sharp-edged severing tool is Fig. 10.

also included in the mechanism for efieoting the A roll of tape A ee F gs. 1, 2, 3 and 6) is rotation of the drum. While the drum operatively mounted on a mandrel B presented by a bracket rotates in but one direction to effect the feed, the C supported on an upwardly projecting portion arm which drives the drum is a reciprocating D of the main frame D of the machine, the

member, being arranged to move in one direction tape therefrom, being threaded beneath a. guide a predetermined amount to determine the length roller D thence over a rotatable drum E and of tape to be fed, and in the opposite direction down over an anvil F. When the tape is posto efiect the feed, the drive of the drum by the sessed of a tachv'surface, it adheres readily to arm being through a pawl and ratchet mechathe drlnn, so that, as the latter is rotated in a counterclockwise direction, looking at the machine from the front, a length of tape equivalent to the length of are through which the drum surface rotates is stripped from the roll A. When the tape is not possessed of atacky surface, the force required to strip it from the roll is not as great, and as a rule in such cases, the area of contact of the tape with the drum will be sufficient to produce the necessary surface friction to perform the stripping action. If not, the outer surface of the drum itself can be roughened to the extent necessary for the purpose.

The bracket C which supports the roll of tape is mounted on the standard D (Figs. 5 and 6) by means of a bolt D having a square head D engaging in an open faced undercut slot C so that the bracket can be both rotatably and horizontally adjusted to accommodate rolls of tape of different sizes. The bracket C is also adjustable in a fore-and-aft direction in order to facilitate the central alinement of tapes of different widths with the drum E, this adjustment being efiected by washers D located between the bracket C and the standard D, and which can be varied in number to suit the particular width of tape in use.

The bracket C also includes a face plate C against which the roll of tape rests, the latter being held in contact with the face plate by a finger B pivotally mounted in a slot B (see Figs. 2 and 6) formed in the outer end of the mandrel B. When the finger is in the position shown in solid lines in Fig. 6, one edge thereof bears against the outer face of the roll of tape, whereas when the finger is turned to the position shown in dotted lines therein, the other edge thereof, which is recessed as at B will bear against the outer face of a roll of tape A of larger width when a width of such size is used. The finger B is held in its different positions of adjustment by a spring-pressed detent B arranged to react against the active edge of the finger, it being understood that the detent B will permit the finger to be swung from one position to another, as desired. When the finger B is swung to an intermediate position, the renewal of the roll of tape can be effected. The finger -B by virtue of the action of the detent B also serves to maintain suflicient tension on the roll to prevent unwinding in the case of tapes devoid of tacky qualities.

The drum E is in the form of a hollow shell (Fig. 4), to the inner face of which there is secured a hub member E rotatably journalled on a sleeve E encircling a fore-and-aft shaft E extending to the rear of the machine and supported by a standard D projecting upwardly from the base D the parts being held in position on the shaft by a nut E threaded on the front end thereof.

The drum E is rotated to eflect the feed of the tape through the medium of an arm G, likewise rotatably mounted on the sleeve E and extending from the point of mounting considerably beyond the peripheral edge of the drum (see Figs. 1, 2 and 3), and counterbalanced by a weight G formed at its opposite end and located within the drum shell. The movement of the arm G in a counterclockwise direction is transmitted to the drum through a pawl and ratchet mechanism (Figs. 10 and 11), the pawl G being pivotally mounted on the arm G and urged into engagement with teeth E formed in the peripheral edge of the hub E secured to the drum, by a compression spring G reacting between the bottoms of opposed recesses formed one in the pawl and the other in a lug presented by the arm. When the arm is moved in a counterclockwise direction, it will, through the pawl G impart a corresponding degree of rotation to the drum, whereas when the arm is turned in the opposite or clockwise direction and, assuming that the drum is held stationary, the pawl will merely riffle over the teeth E until the movement of the arm is arrested.

At the free end of the arm G (Figs. '7 and 8), there is mounted a shoe G secured thereto by means of a bolt G in a manner which will facilitate any desired angular adjustment of the shoe, and to the outer face of the shoe there is adjustably secured a sharp-edged-tool G which is held in place by a guard plate G and a pair of screws G passing through the guard plate and tool and threaded into the shoe G The anvil F, previously referred to, is near the bottom of the frame and in a position to cooperate with the tool G when the arm G is at the end of its feed stroke and is mounted on an arm D extending forwardly from the standard D The anvil is angularly adjustable in order to correspond with the angular adjustment of the shoe G and, for a purpose which will be made clear hereinafter, several layers of adhesive tape are bound therearound.

Assuming now that the leading end of the tape, namely, that portion thereof which has left the drum, is in contact with the tape on the anvil, the operator will, in order to sever a piece of tape, grasp the end thereof and pull it off the anvil. The arm G will then be caused to rotate from, say, the position shown in solid lines in Fig. 3 to the position shown in dotted lines therein and, in doing so, will effect the rotation of the drum to strip the tape from the roll A and at the same time feed an equivalent length of tape off the drum, the length of tape depending upon the stroke of the arm G, or what is the same thing, the degree of rotation of the drum. As the arm G reaches the end of its stroke, it will tack the strip of tape to the anvil and, while the arm is held in such position, the operator can sever the length from the strip by pulling it against the cutting too]. As the arm G returns to its initial position, the drum remains stationary, retrograde movement thereof being prevented by the tape itself which adheres to the anvil either by virtue of the tacky nature of the tape and the layers of the same material on the anvil, or when the tape is not tacky, merely by virtue of the tacky material on the anvil itself.

It can thus be seen that the length of stroke of the arm G determines the length of the strip of tape severed and, while the operator could determine the stripping off the roll A of any length of tape desired, provision is made for predetermining the stroke of the arm G so that the strips of tape can be of equal length and for adjusting the stroke so that the predetermined lengths can be varied to any extent desired within limits, of course. The mechanism for this purpose will be described hereinafter.

While the machine could be operated by hand through the medium of a rod G (see Fig. 7) threaded into the arm G at the outer end thereof and which could be grasped by the operator to effect the active stroke of the arm G, it is preferred that the machine be foot-operated through the medium of a pivoted pedal lever H (Figs. 2 and 3) extending down through a slot D in the base of the machine and through a registering slot formed in the table on which the machine is mounted. The power of the pedal lever H is transmitted to the arm G to effect the driving of the drum through intermediate mechanism which includes a segment plate J (Figs. 3 and 9) pivotally mounted at the top on the standard D and formed in its lower edge with teeth J adapted to mesh with corresponding teeth G formed on a hub extension of the arm G and which also encircles the shaft E on which the arm is pivoted. The segment plate J is turned about its pivot to effect the rotation of the arm G through the medium of a lever K pivotally mounted as at K in the standard D and near the bottom of the machine, this lever being formed at its upper end with a rounded portion K engaging between a pair of lugs J projecting rearwardly from the segment plate J. About midway in its upwardly extending arm, the lever K is connected to the pedal lever H by means of a shoe H screwed to the pedal lever at its upper end and formed with a rounded portion li-I engaging in an open face slot K formed in a projecting portion K of said lever. The lever H itself is pivotally mounted on a short transverse shaft H (Figs. 3, 4 and 5) passing through the lever and through upstanding portions of the base near the bottom of the latter. According to this arrangement, when the operator exerts foot pressure on a foot rest H with which the pedal lever H is equipped at its lower end, such action will, by virture of the shape of the pedal lever, cause the lever to rotate about its pivot H in a counterclockwise direction, and this movement of the lever will, through the connections hereinbefore described, turn the lever K likewise in a counterclockwise direction. The lever K, acting. through the lugs J in the segment plate, will rotate the latter in a clockwise direction to drive the arm G on its active or tape feeding stroke and, when the foot pedal is released, it will, through the force of gravity, return to its normal position and, through the same connections, effect the retrograde movement of the arm G. The return movement of the parts, under the force of gravity, acting upon the. pedal lever, is insured by virtue of the fact that the center of mass of the lever is considerably to the right of its pivot H The movement of the arm G on its active stroke is limited by a banking screw K threaded through the end of a portion K of the lever K extending to the left of the pivot K (Figs. 2 and 3) and which banks against a boss D formed on the base of the machine. The banking screw K is adjusted so that the shoe G will not strike the anvil F with any considerable degree of force, but with just sufficient force to insure tacking of the tape strip against the anvil in the manner hereinbefore described. The adjusted position of the banking screw K is maintained by a lock nut K with which the banking screw is provided.

The extent of the retrograde or return movement of the arm G is determined by a banking screw D threaded through a forwardly projecting lug D formed in the standard D and against which a lug K formed in the upper edge of the lever K banks during the return movement of the latter. Since, as previously stated, the retrograde or return movement of the arm G determines the length of the strip of tape fed for severing, it will be apparent that the length of such strips can be varied as desired by adjusting the screw D since, as previously stated, this screw determines the position in which the arm G is brought to rest upon its return stroke, and consequently the position from which its active or feed stroke is initiated. The banking screw D can be held in its different positions of adjustment by a lock nut D which can be screwed up tightly against the lugD While the force capable of being exerted by the foot is considerable, the arrangement of the levers K and J (the segment plate J being essentially a lever) and the method of driving the arm G are such that the force exerted at the end of the lever G is considerably reduced, with the result that there is no danger of any harm befalling the operator in theme of the machine. The peculiar shape of the lever K is dictated by the effort to secure compactness and balance in the machine and also in order that it may clear some of the operating parts. Furthermore, while the tape could be fed directly from the roll A to the drum E, it is passed around the roll D in order to provide clearness for the shoe G when the arm G has a long stroke, as in the case of stripping off long lengths of tape. around the roll D is also helpful where the tape is not adhesive, since it increases the area of contact between the tape and the drum. It might also be stated that the pedal lever H can be made in one piece, if desired, but in the present instance it has been made in three pieces connected together by bolts h solely for the purpose of facilitating the packing and shipping of the machine. It will also be understood that the machine herein described is not limited to the stripping of tape from a roll, but can be adapted for use with other iaterial as well.

In the accompanying drawings, the invention has been shown merely by Way of example and in preferred form, and obviously many variations and modifications may be made therein which will still be comprised within its spirit. It is to be understood, therefore, that the invention is not limited to any specific form or embodiment, except insofar as such limitations are specified in the appended claims.

Having thus described my invention, what I claim is:

'1. A device for stripping adhesive material from a roll including, in combination, a support for the roll, a rotatable drum over which the material is led from the roll and to the surface of which the material adheres, and means for rotating the drum including a reciprocable arm, a pedal operating member and intermediate connections adapted upon the movement of the pedal in one direction to move the arm in a direction to rotate the drum.

2. A device for stripping adhesive material from a roll including, in combination, a support for the roll, a rotatable drum over which the material is led from the roll and to the surface of which the material adheres so as to be advanced thereby as the drum is rotated, and means for rotating the drum including a reciprocable arm, a pedal operating member and intermediate connections adapted upon the movement of the pedal in one direction to move the arm in a direction to rotate the drum and upon the movement of the pedal in the other direction to move the arm in the reverse direction independently of the drum.

3. A device for stripping material from a roll in predetermined lengths including, in combination, a support for the roll, a rotatable drum over which the material is led from the roll and in contacting relation with the surface of the drum so as to be advanced thereby as the drum is rotated, means for imparting to the drum a predetermined degree of rotation proportional to the Threading the tape length of material desired, means for clamping the material so that the desired length can be severed, said means being so located relative'to the drum that after the severance of the measured length, there remains a portion of the material closely adjacent the end from which the length has been severed and in advance of the cutting position, which portion can be readily grasped by the operator at both sides and manually held under tension for guidance past the clamping means.

4. A device for stripping material from a roll in predetermined lengths including, in combination, a support for the roll, a rotatable drum over which the material is led from the roll and in contacting relation with the surface of the drum so as to be advanced thereby as the drum is rotated, means including a reciprocable member operable to impart to the drum predetermined increments of rotation in one direction proportional to the length of material desired, and means including a sharp-edged tool carried by the member to facilitate severing the desired length, said sharp-edged tool in its cutting position being so located relative to the drum that after the severance of the measured length, there remains a portion of the material closely adjacent the end from which the length has been severed and in advance of the cutting position, which portion can be readily grasped by the operator at both sides and manually held under tension for guidance past the tool.

5. A device for stripping material from a roll in predetermined lengths including, in combination, a support for the roll, a rotatable drum over which the material is led from the roll and in contacting relation with the surface of the drum so as to be advanced thereby as the drum is rotated, means including a reciprocable member operable to impart to the drum predetermined increments of rotation in one direction proportional to the length of material desired, means carried by the member adapted to cooperate with a relatively stationary part. of the device for clamping the material during severing, and a knife edge having a relatively fixed cutting position associated with said means to facilitate the severing operation.

6. A device for stripping material from a roll in predetermined lengths including, in combination, a support for the roll, a rotatable drum over which the material is led from the roll and in contacting relation with the surface of the drum so as to be advanced thereby as the drum is rotated, means including a reciprocable member operable toimpart to the drum predetermined increments of rotation in one direction proportional to the length of material desired, and means carried by the member adapted to cooperate with a relatively stationary part of the device for clamping the material during severance, said means and the relatively stationary part of the device with which it cooperates being adjustableto permit severing the material at different angles with respect to its direction of feed.

'7. A device for stripping material from a roll and severing it into predetermined lengths, and which includes, in combination, a support for the roll of material, a measuring device comprising an element movable through predetermined strokes and in contact with which the material is held during such movement, whereby the material is stripped from the roll and the length to be severed determined, and a cutter for severing the measured length and having its cutting position so disposed relative to said element that after the severance of the measured length, there remains be readily grasped by the operator at both sides and manually held under tension for guidance past the cutting position.

8. A combination according to claim 7, wherein the material handled by the device is adhesive, and held in contact with the element by its adhesiveness.

9. A combination according to claim 7, wherein the cutter is angularly adjustable so as to permit severing the material at various angles with respect to its direction of feed.

10. A combination according to claim '7, wherein means are provided for varying the extent of the predetermined strokes through which the element is movable so as to facilitate stripping and severing different lengths of material from the 'roll.

11. A combination according to claim 7, wherein there is provided means adjacent the cutter in the operative position thereof for holding the material at its free end after a length thereof has been severed.

12. A combination according to claim '7, wherein there is provided adhesive means adjacent the cutter in the operative position of the latter for holding the free end of the material after a length thereof has been severed.

13. A combination according to claim '7, wherein the element therein referred to is a rotatable drum.

1%. A combination according to claim 7, wherein the element is a rotatable drum, and means for imparting to the drum a predetermined degree of rotation proportional to the length of material desired.

15. A combination according to claim '7, wherein the element referred to is a rotatable drum, means for imparting to the drum a predetermined degree of rotation proportional to the length of material desired, and means for varying said degree of rotation to obtain different lengths of material.

16. A device for stripping material from a roll in predetermined lengths including, in combination, a support for the roll, a rotatable drum over which the material is led from the roll and in contacting relation with the surface of the drum so as to be advanced thereby as the drum is rotated, means for rotating said drum to feed the material, said means including a reciprocable member movable as a unit with said drum in the direction of feed but relatively with respect to said drum in the reverse direction, and means including the material itself acting to hold the element relatively stationary during the movement of the reciprocable member in the reverse direction.

1'7. A device for stripping material from a roll in predetermined lengths including, in combination, a support for the roll, a rotatable drum over which the material is led from the roll and with the surface of which the material is held in contact, means including a reciprocable member operable to impart to the drum predetermined increments of rotation in one direction proportional to the length of material desired, said drum upon being rotated acting to strip the material from the roll, means mounted on said member and adapted to cooperate with adhesive means on a relatively stationary part of the device for clamping the material during the severing of the desired length, said clamping action serving to cause the material from which the piece is severed to adhere to the adhesive means on the relatively stationary part of the machine to hold the rotatable drum against retrograde movement, and means for effecting the return movement of the reciprocable member while the rotatable drum is thus held.

18. In a device for stripping material from a roll, a drum adapted to receive rolls of different widths, an arm recessed in one edge thereof and 10 pivotally mounted at the end of the drum and movable from an inoperative position in alinement with the axis of the drum into one or another of two operative positionsvat right angles thereto, said arm in its inoperative position permitting the roll to be passed over the arm and located on the drum and in its difierent operative positions acting to hold rolls of different widths on the drum by reason of its different edge configurations.

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