US2659435A - Tape cutting machine - Google Patents

Description

Nov. 17, 1953 M. s. MANSSON TAPE CUTTING MACHINE 4 Sheets-Sheet '1 Filed April 22, 1948 INVENTOR.

irroe/vzy Nov. 17, 1953 M. s. MANSSON 2,659,435 TAPE CUTTING MACHINE Filed April 22, 1948 4 Sheets-Sheet 2 INVENTOR.

Men .5. Man/55a BY Nov. 17, 1953 Filed April 22, 1948 M. S. MANSSON TAPE CUTTING MACHINE 4 Sheets-Sheet 3 INVENTOR. M/JQr/A/ SMMsu-a/V Nov. 17, 1953 M. s. MANSSON TAPE CUTTING MACHINE 4 Sheets-Sheet 4 Filed April 22, 1948 INVENTOR. Mqernv S Mq/vssozv Patented Nov. 17, 1953 The present invention is directed to cutting ma labor in order to accomplish such a result.

The present invention is intended and adapted to overcome the difficulties and disadvantages and economically.

It is also among the objects of the present inventlon to provide a cutting apparatus which is be out. It is further among the objects of the present invention to provide adaptable to cooperate with a sewing machine or to operate independently thereof.

In practicing the present invention, there is provided a series of rolls or the like, capable of drawing tape or may be adjusted being cut may be M ments and additional circuits are provided so that tape not having any cross seams may be accurately cut,

as well as relatively long lengths of tape.

In the accompanying drawing constituting a part hereof, and in which like reference characters indicate like parts,

Fig. 1 is a top plan view of a cutting machine or apparatus made in accordance with the present invention, some parts being broken away for clearness;

Fig. 2 is an end elevational view thereof looking from the left of Fig. 1;

Fig. 3 is an end elevational view thereof, looking towards the sewing machine, some parts being omitted and other parts being shown in section;

Fig. 4 is a side elevational view thereof, some parts being broken away for clearness;

Fig. 5 is a vertical cross-sectional fragmentary view taken along the line 5-5 of Fig. 3,

Fig. 6 is a diagrammatic view showing the electrical circuits incorporated in the device, and

Fig. 7 shows a modified mounting of the cutting knife.

to be suitably stitched.

The device of the present invention may consist of a support 5 suitably located with respect to the sewing machine. At the end of the support adjacent to the sewing head on a bracket 6 are a pair of wheels 1 and 8, the tape 4 passing around Wheel 7 to allow inspection of the tape, and over wheel 8. The tape then passes over casing 9 having a microswitch Iii therein. A wheel H is mounted on the end of the switch lever and A sprin held cover 9 confines the tape to insure contact thereof with wheel I I.

Adjacent to said casing and to the right thereof, as shown in Fig. 4,

#3 to maintain a substantially constant adjustable level in container l2. Horizontally mounted rolls l4 and are positioned so that tape 4 passes between the same. Roll 14 takes up water and moistens the tape. The latter then passes around roll l6 and over cylindrical arm l1 which constitutes an ironer. It contains a suitable electrical resistance element to maintain desired temperatures. A presser 13 mounted in casing 19 having a coil spring therein exerting pressure on said presser tends to keep the same in position to iron the tape. Handle 2% on the end of presser 18 allows the same to be manually lifted.

Said ironing mechanism is mounted on one arm of a bracket 2| which is fixed to support 5. An adjustable measuring bar 22 extends vertically through slot 23 in bracket 21. The lower end 24 of bar 22 is provided with a roller and tape 4 is adapted to pass under the same. Means, not shown, are provided for fixing bar 22 in its bracket, said means allowing adjustment of the vertical position thereof. One may use for this purpose a set screw type of device passing through bracket 21 and bearing against bar 22.

A horizontal shaft 26 which constitutes the driving member has a feed roller secured there- A second roller carried by shaft 21 mounted in yoke 23, fixed on support 5, is intended to press against roller 25 and is geared thereto. This is accomloaded bearing support in yoke 28, against which a coil spring 28 mounted in said yoke presses. Handle 22 allows the retraction of bearing 34.

The tape after being drawn through rollers 25-21 then enters guide 32. It consists of a flat base on which the tape lies and is substantially enclosed but with a slot 33 at the entrance end thereof. A chamber 34 is provided therein, said chamber being higher at the entrance end and sloping down to slot 35 at the exit end thereof. Guide 32 may be mounted on plate 3| secured to support 5.

On said plate is a stub shaft 28 carrying arm 31 so as to oscillate on said shaft. Said arm carries a hardened knife blade 38 adapted to cooperate with a similar knife blade 39 fixed on plate 3|. The cooperating blades may be given an automatically retroactive action by suitable spring 31' or other arrangements, as is well known. Depending from the end of arm 31 is rod 40 carrying an armature 41 at the lower end thereof. Said armature operates within solenoid 42 attached to the support at 43.

A'microswitch 44 having an operating arm 45 is secured in proximity to armature 4| so that arm 45 is almost in contact therewith. Microswitch 44 may be termed a kick-back switch for purposes to be later described. Pin 46 at the top of armature 4| is so located with respect to arm 45 that when arm 31 is in its lowest position, pin 46 depresses arm 45 and opens the switch which is otherwise normally closed.

With reference to Fig. 4, tape Ll having a series of transverse seams 4' therein passes to the right around wheel 1 and over wheel 8 and in contact with roll ll, then through moistener 14-15 and between ironing elements l1--l8, one or both of which is electrically heated, whereby the tape is ironed. It then passes under roller 24 and upwardly between rollers 25 and 21, being drawn through the foregoing elements by the positive action of rollers 25 and 21. It then passes through guide 32 in position for knife 38 to cut the same, as shown in Fig. 1. When a seam in the tape contacts roll II, it depresses the same and closes the circuit of microswitch ill. The

action which takes place is illustrated by the wiring diagram of Fig. 6. Ther is provided a transformer 41 and a relay 48 having a coil 49 therein. Power at the usual voltage enters the transformer by line 50. Ironer I1 is directly supplied with current through line 5|, there being the usual switch in the line. Knife solenoid 42 is supplied with the high voltage current through line 52 From the low voltage side of the transformer, which may conveniently be six volts, a lead 53 connects with coil 49, the other end of which has a lead 54 connected to toggle switch 58. Assuming that the switch is in the position shown, current flows through terminal 58', wire 55, to kickback switch 44, then through wire 55-51 to the other terminal of the secondary transformer. A parallel circuit leading from wire 55 extends through wire 59 to the seam microswitch It), then by wires 60 back to the transformer.

In operation, when a seam closes microswitch l0, current flows from the secondary of the transformer through the relay, closing the same and energizing solenoid 42. This immediately pulls arm 31 down, causing knife blades 38-39 to cut off a piece of tape 4'. When pin 46 strikes arm 45, switch 44 is opened, breaking the circuit of microswitch Ill and allowing the knife to be retracted by a spring 31' into its initial inoperative position. If, however, the seam has not passed roll II and still continues to maintain switch 10 closed, the circuit will be immediately reestablished before arm 31 has an opportunity of being retracted due to the inertia of the mass involved. Therefore, as long as the seam is in contact with roll H, the knife will flutter back and forth and after the seam has passed over roll H, the knife will be retracted.

Because of the character of guide 32 in case the knife is held down for a substantial fraction of time, tape will be continued to be fed by the action of roller 25 and a certain amount thereof will accumulate between roller 25 and knife 38. Because of the shape of the chamber 34, such accumulation will be permitted and after the knife has been retracted, the shape of the chamber is such that the accumulation will be forced out of slot 35, thus at the time of the next operation of the knife, the exact predetermined amount of tape will have been fed so that identical lengths will be cut off under all conditions.

The outer end of shaft 28 as shown in Figs. 2 and 3 is provided with a slippin clutch pulley 6|, spring pressed as shown at 62. This in turn is connected by belt 63 to pulley 54, which in turn is connected by belt 65 to pulley 66 secured onto the main shaft of the sewing machine. Motor 61 drives said main shaft through belt 61'.

When it is desired, in a modification, to cut lengths of tape from a continuous roll or a long strip, and not having any transverse seams therein, the following mechanism is used for measuring the lengths to be cut. Shaft 69 has pulley 10 thereon and belt 1| therefrom passes over pulley 12. -Said pulley is associated with an idler pulley 13 (see Fig. 3) and an additional pulley 14 on the opposite side thereof. A belt 15 passes over pulley 14 and pulley 15' mounted on shaft 28. A series of cone pulleys 12, 13, 14 is mounted on stub shaft 18 carried by yoke 16, which is pivoted at 11 to the base of the machine. On arm 19 of yoke 16 is a screw mounted in holder 8|. rhe adjustment of the length of tape to be cut is determined by the ratio of speeds of pulleys 15' and 10. The ratio is altered by threading screw Bil in One direction or the other, thus pivotally moving pulley 13 about shaft 77 as a center. This changes the tensions in belts 7| and 75 and alters the speed throw switch, is placed in a position to close the circuit through terminal 58. Current from the transformer passes through said switch, line 84, to microswitch 35, then by wire 86 through wire 60' back to the Another circuit is provided from point 88 through a counter-solenoid 89 for actuating the counter, wires 90 and 51, back to the transformer. There is also provided a counter predetermining switch 91 for automatically stopping the operation, which is connected by wire 92 to the low voltage supply and wire 93 leads to ground.

Means are provided so that during the rotation of the speed adjusting pulleys a pin or other element, shown at the lower left of Fig. 3, on the shaft 69 of the pulley 79 closes microswitch 85 at each rotation and thus closes the circuit of the knife solenoid 42, causing the predetermined length. An indicator is usually provided to visually show the lengths being cut. This includes a pointer 82 fixed on shaft 71 and cooperating with calibrated scale 83 on a side of support 5. As yoke 76 is of pin 46 which extends through armature ti, on opposite sides of said armature. Said springs are anchored at 93 on support and bias lever lever 9| received finger 95 on the end of arm 37.

operates with a cam follower mounted on said support and. normally contacting the face 98 of said lever. urges the lever into cooperative relation with finger 95 and follower 97. Spring I92 tends to retract arm 37 and hold it in its upper position.

In the operation thereof, when solenoid 42 is energized it pulls lever 91 down against the action of springs 92 and 109. Notch 95 contacting finger 95 pulls arm 37 down causing knife blades 38-39 to cut the tape. Face 98 moves past folnoid 42 is closed, lever 9| remains in its lower position and the knife cannot again operate until the lever is first released by the solenoid 42. This prevents accidental cuttings of the tape cam face 99 which 00- r where seams therein are relatively long. When solenoid 02 is deenergized, armature 4| moves upwardly by pressure of spring 92 carrying lever 91 upwardly until notch 99 and cam face 95 are above arm 37 and cam 97, respectively, when spring 99 pulls lever 91 to the left into operative position.

Other modifications of the invention may be made within the spirit thereof, and the invention is to be broadly construed and to be limited only by the character of the claims appended hereto.

I claim:

1. A machine for cutting tape and the like comprising means for feeding tape including a driven roller over which said tape passes, a sensitive switch adapted to be operated by contact with a protuberance on said tape, a knife movable across the path of said tape, means actuated by a circuit controlled by said switch to move said knife to out said tape at predetermined intervals, said knife being mounted on a pivoted arm, an armature actuated by a solenoid to said arm including a lever secured to said armature notches on said said finger for operation of said 2. A machine for cutting MARTIN S. MANSSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 219,963 Mather Sept. 23, 1879 918.813 Armstrong Apr. 20, 1909 1,046,519 Westbrook Dec. 10, 1912 1,090,388 Foote Mar. 17, 1914 1,161,850 Dixon Nov. 30, 1915 1,259,968 Edwards Mar. 19, 1918 1,318,320 Frohn Oct. 7, 1919 1,647,305 Peters Nov. 1, 1927 1,822,902 Osborne Sept. 15, 1931 1,837,762 Dale Dec. 22, 1931 1,900,252 Morgan Mar. 7, 1933 1,947,399 Umansky Feb. 13, 1934 1,958,138 Fowler et a1 May 8, 1934 2,059,368 Kruttshnitt Nov. 3, 1936 2,075,037 Hunter Mar. 30, 1937 2,077,439 Schmitt Apr. 20, 1937 2,211,362 Bennett Aug. 13, 1940 2,465,453 Holbrook Mar. 29, 1949 FOREIGN PATENTS Number Country Date 369,064 Germany Feb. 14, 1923

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