US1186145A - Corrugating-machine. - Google Patents

Description

F. D. STOWE.

CORRUGATING MACHINE.

APPLICATION r1110 FEB. 26. 1914.

Patented June 6, 1916.

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F. D. STOWE.

CORBUGATING MACHINE.

APPLICATION FILED FEB. 26. 1914.

Patented June 6, 1916.

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F. D. STOWE.

CORRUGATING MACHINE.

APPLICATION FILED FEB. 26. I9I-I.

1,186,145. Patented June 6,1916.

3 SHEETS-SHEETS- fll: coLUllllA PLANOOMPH 120., WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

FLOYD D. STOWE, OF WILMINGTON, "DELAWARE, ASSIG'NOR '10 I. DU FONT DE NEMOURS POWDER "COMPANY, OF WILMINGTON, DEL-AWARE, A C ORPORA- TION OF NEW JERSEY.

CORRUGATING-MLACHINE.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed February 26, 1914. Serial N 0. 821,229.

To all whom it may concern Be it known that I, FLoYD D. SToWE, of IVilmington, in the county of New Castle, and in the State of Delaware, have invented a. certain new and useful Improvement in Corrugating-Machines, and do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates particularly to machines adapted to corrugate curved surfaces and especially cylindrical objects of sheet metal, although it is applicable also to many other uses.

My invention is especially useful in connection with the production of powder kegs made out of sheet iron. Hitherto corrugating machines for corrugating cylindrical blanks made from sheet metal have been the source of numerous accidents to the operatorsof the machines owing to the fact that it was necessary to begin the corrugating operation while the blank is grasped in the hand of the operator. In such machines the cylindrical blank begins to turn while in the hand of the operator so that the sharp edges of the blank consequently cut the hands of the operator. Furthermore, such machines have been constructed so that the guide rollers cooperating with the corrugating rolls have been located outside of the cylindrical blank so that when the blank begins to rotate there is a tendency for the crimped edges of the cylindrical blank to become disengaged thereby separating the ends of the blank of sheet metal out of which the cylindrical blank has been made.

The object of my invention is to provide a corrugating machine which will automatically feed the blank into its proper position for the corrugating operations of the machine and particularly before the corrugating operations begin.

A further object of my invention is to provide a corrugating machine in which, while the cylindrical. blanks having crimped edges are being operated upon, the corrugating operations will tend to maintain the crimped edges together instead of forcing them apart as in the case of previous machines used for corrugating.

lVhile my invention is capable of embodiment in many different forms for the purpose of illustration I have shown only one form thereof inthe accompanying drawings, in which, Figure'l is a front elevation of a 'corrugat mg machine made in accordance with my invention; Fig. 2 is a 'side elevation thereof; Fig. 3 is a plan view thereof; and Fig. 4 is a side elevation of a detail taken on the opposite side to the view shown in Fig.2.

In the drawings I have shown a main frame 1 adapted to'rest upon the'fioor. To the top 'of'this main frame 1 there is secured a pair-of uprights :2 by means of bolts 3. These uprights 2 are formed at the top with journal bearings Ito receive a shaft '5, carrying at its center a pulley .6 between the two uprights 2, and at its ends two corrugating rolls 7 and 8. The blank is first corrugated at one end on the roll 7, and then corrugated at the other end on roll '8. The corrugating rolls 7 and 8 are maintained in position by means of collars 9 which are secured to the shaft 5 by screws 10. Beneath the lower "corrugating roll 7 there is a rod 11 which is screwed into one of the uprights 2, which rod 11 carries an inner arm 12, the end of which has a slot 13'to adjustably receive a stud shaft 14 carrying an inner guide roll '15. The stud shaft 14 is maintained in its position of adjustment by a nut 16. The

rod 11 also carries an outer bracket 17 having in its end a slot 18 to receive a stud shaft 19 carrying an outer guide roll '20. The stud shaft 19 is maintained in its adjusted position by a nut 21. Both the guide rolls 15 and 20 are so located that when cylindrical blank 22 is placed over thecorrugating roll 7 and the guide rolls 1'5 and 2O, the blank 22. will be rotated in a spiral manner toward the inner end of the roll 7. There is also provided upon the rod 11a middle arm 22 carrying a middle "guideroll 22* on a stud shaft 22, and which is secured in place by a nut 22 This middle guide roll 22 is provided only at the right side of the machine to give greater stiffness to the blank in the initial corrugating operation. After one end of the blank is corrugated, this middle roll is not needed when the blank is being finally corrugated on roll 8. When the blank 22 has been moved in this manner to the inner end of the corrugating roll 7 it contacts with a U-shaped plate '23 which is secured to the uprights 2 by means of screws 24: in such a manner that it may be readily removed and replaced when worn by contact with the blank. Said plat 23 carries a top guide roll 25 on a stud shaft 26 secured in position by a nut 27. On the other side of the machine there is provided an inner guide roll 28, an outer guide roll 29, and a top guide roll 30, which are supported upon a rod 31 and a plate 32 in a manner similar to the corresponding rolls on the other side of the machine. Each of the uprights 2 has at its rear an upward extension 33 to receive a shaft 34 carried by a lever arm The lever arm 35 at its front end projects over the top of the lower corrugating rolls 7 and 8, and is provided at this point with down wardly directed arms 36, which have journal bearings 37 to receive two shafts 38 and 39, carrying respectively upper corrugating rolls a0 and %1. At its rear the lever arm 35 has a screw threaded link as adjustably connected to the top of a weight by means of a nut stat. The weight as at its lower end is pivoted to a bell crank lever e25 pivotally supported in the main frame 1. The remaining arm of the bell crank lever 4:5 is connected. by a link 4L6 to an arm 47, forming part of a foot treadle 48 which is also pivotally supported in the main frame 1.

In the operation of the machine the pulley 6 is continually driven from any suitable source of power. This drives the lower corrugating rolls 7 and 8. The weight 13 will normally withdraw the upper corrugating rolls 4:0 and 41 so as to move the same out of contact with the lower corrugating rolls 7 and 8. The operator now takes a cylindrical blank in each hand, such for example as the blank 22 having crimped edges, as shown in the drawings, and places these two blanks over the corrugating rolls 7 and 8. The blank applied to the corrugating roll 7 at the right of the machine is an uncorrugated blank, while the blank applied to the roll 8 at the left of the machine has already had one end corrugated and is placed over the roll 8 so as to corrugate its other end. When the blanks 22 are thus placed over the rolls 7 and 8, the positions of the various guide'rolls will cause the blanks to occupy positions slightly inclined to the axis of the rolls 7 and 8, with the outer ends of the blanks slightly nearer to the position of the operator than the inner ends thereof. The rotation of the rolls 7 and 8 in the direction of the arrows, in cooperation with the inner and outer guide rolls 15, 20, 28 and 29, will therefore cause the blanks 22 to be fed inwardly against the plates 23 and 32. The operator thereupon presses the treadle 18 thereby bringing the upper corrugating rolls LO and 41 into cooperation with the lower corrugating rolls 7 and 8, thus producing circular corrugations around the sur faces of the blanks 22. During the corrugation the inner and outer guide rolls 15, 20, 28 and 29 will tend to exert pressure upon the interior of the blanks thus distending them and maintaining the crimped edges of the cylindrical blank together during the crimping operation. The operation of corrugating the blanks is quickly finished, after which the treadle 48 is released, thereby causing the weight 43 to withdraw the up per corrugating rolls 40 and 41 out of contact with the corrugating blanks. The blanks can now be removed by the operator and sent forward for the subsequent operations to which the blank may be subjected.

While I have described my invention above in detail, I wish it to be understood that many changes may be made therein without departing from the spirit of my invention.

I claim:

1. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder and means for guiding a blank at an angle to the axis of one of the corrugating rollers.

2. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder and a. guide roll for guiding a blank at an angle to the axis of one of the corrugating rollers.

3. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder and a guide roll on each side of one of the corrugating rollers for guiding a blank at an angle to the axis of said corrugating roller.

4:. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder and a guide roll on each side of one of the corrugating rollers for guiding a blank at an angle to the axis of said corrugating roller, the guide rollers being located at the opposite ends of the corrugating' roller.

5. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder, a roll on each side of one of the corrugating rollers for guiding a blank at an angle to the axis of said corrugating roller, and a guide roll located on the oppositle1 side of the blank from the other guide ro s.

6. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder, a guide roll on each side of one of the corrugating rollers for guiding a blank at an angle to the axis of said corrugating roller, the guide rollers being located. at the opposite ends of the corrugating roller, and

a guide roll located on the opposite side of the blank from the other guide rolls.

7. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder, means for guiding a blank at an angle to the axis of one of the corrugating rollers, and a removable plate against which the blank is fed by the angular guiding means.

8. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder, a guide roll for guiding a blank at anangle to the axis of one of the corrugating rollers, and a removable plate against which the blank is fed by the angular guiding means.

9. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder, a guide roll on each side of one of the corrugating rollers for guiding a blank at an angle to the axis of said corrugating roller, and a removable plate against which the blank is fed by the angular guiding means.

10. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder, a guide roll on each side of one of the corrugating rollers for guiding a blank at an angle to the axis of said corrugating roller, the guide rollers being located at the opposite ends of the corrugating roller, and a removable plate against Which the blank is fed by the angular guiding means.

11. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder, a guide roll on each side of one of the corrugating rollers for guiding a blank at an angle to the axis of said corrugating roller, a guide roll located on the opposite side of the blank from the other guide rolls, and a removable plate against which the blank is fed by the angular guiding means.

12. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder, a guide roll on each side of one of the corrugating rollers for guiding a copies of this patent may be obtained for five cents each, by addressing the blank at an angle tovthe axis of said corrugating roller, the guide rollers being located at the opposite ends of the corrugating roller, a guide roll located on the opposite side of the blank from the other guide rolls, and a removable plate against Which the blank is fed by the angular guiding means.

13. In combination, a pair of corrugating rollers for corrugating a cylindrical blank, and a pair of guide rolls located on the interior of the blank and at opposite ends of the corrugating rollers.

14%. In combination, a pair of corrugating rollers for corrugating a cylindrical blank, a pair of guide rolls located on the interior of the blank and at opposite ends of the corrugating rollers, and a guide roll located on the outside of the blank.

15. In combination, a pair of corrugating rollers adapted to produce parallel grooves in planes at right angles to the axis of a cylinder for corrugating a cylindrical blank, and a guide roll located on the interior of the blank for guiding the blank at an angle to one of the corrugating rolls.

16. In combination, a. pair of corrugating rollers for corrugating a cylindrical blank, and a pair of guide rolls located on the interior of the blank for guiding the blank at an angle to one of the corrugating rolls and at opposite ends of the corrugating rollers.

17. In combination, a pair of corrugating rollers for corrugating a cylindrical blank, a guide roll located on the interior of the' blank for guiding the blank at an angle to one of the corrugating rolls, and a guide roll located on the outside of the blank.

18. In combination, a pair of corrugating rollers for corrugating a cylindrical blank, a pair of guide rolls located on the interior of the blank for guiding the blank at an angle to one of the corrugating rolls and at opposite ends of the corrugating rollers, and a guide roll located on the outside of the blank.

In testimony that I claim the have hereunto set my hand.

FLOYD D. STOWE.

foregoing I WVitnesses ARTHUR I/VRIGHT, L. BRODERIGK.

Washington, D. G.

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