US570655A

US570655A - Bending-machine

Info

Publication number: US570655A
Authority: US
Publication date: 1896-11-03
Anticipated expiration: 1913-11-03

Description

(No Model.) 2 Sheets-Sheet 1.

J. W. ABRAHAMS. BENDING MAGHINE.

No. 570,655. Patented Nov, 3, 1896.

(No Model.) 2 Sheets-Sheet 2.

, J. W. ABRAHAMS.

BENDING MAGHINE.

Patented Nov. 3, 1896.

UNITED STATES PATENT ()FFICE.

ONE-HALF TO HARRY A. MARLIN,

OF PITTSBURG, PENNSYLVANIA.

SENDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 570,655, dated November 3, 1896.

Application filed January 13, 1896.

To aZZ whom it may concern.-

Be it known that I, JOHN WILLIAM ABRA- HAMS, a resident of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Bending-Machines; and I do hereby declare the following to be a full, clear, and exact description thereof. Y

Myinvention relates to machines for bend- 1o ing metal, its object, being to provide a machine by which long lengths of sheet metal may be beaded and accurately bent into shape for eaves-troughs or other purposes by one operation.

My invention comprises, generally stated,

a bending-roll, a beading-roll carried by said bending-roll and adapted to be rotated independently of said bending-roll, and a reciprocating presser to bear against said bendingroll when said roll is rotated.

To enable others skilled in the art to make and use myinvention, Iwill describe the same more fully, referring to the accompanying drawings, in which Figure l is an end view of myiinproved machine. Fig. 2 is a plan View. Fig. 3 is an enlarged detail View of the bending-roll and header with the metal in position for beading. Fig. 4 is a like view after the beading 3o operation. Fig. 5 is a like view showing the operation of bending the metal. Fig. 6 is a perspective View of a portion of beader. Fig. 7 is a section online 7 7, Fig. 2. Fig. 8 is a detail View of one end of bending-roll.

The letter a represents a suitable frame or support for the several parts of the machine. Mounted in suitable standards I) on said frame is the bending-roll c of any suitable diameter and length. At suitable distances apart on the roll 0 are the brackets d, said brackets having the bolts d, which pass through said roll and have their heads within countersunk openings 0 in said roll, these brackets d having hook-shaped ends which inclose the greater part of the beader f and form bearings for the said beaderf. This beaderf may be of any suitable diameter according to the size of beading desired. A groove or slot 9 is formed in the beader f, within which the edge of the metal to be beaded is inserted. To prevent longitudinal movement on the part of the beader said header is provided with the collar h, held in place by set-screw Serial No. 575,264. (N0 model.)

h. This collar is attached to said beader at a point just beyond the end bracket d. Furthermore, the bending-roll c is cutaway at the end adjacent to said collar, as at 7;, to form a recess to receive a portion of the collar h. The header f has the seats j formed at each end thereof to receive the end of handles L for turning said beader.

Secured to the frame a is the foot-lever Z, said lever being norm allyheld in its elevated position by the spring m. A rod 11, secured to the lever Z, passes up into a seat or recess a, formed within the roll 0. In this manner the roll 0 maybe locked or held from rotating.

A rod 0 is secured at one end to the lever Z and at its upper end to the crank 19. This crank 19 is mounted on the shaft q, jour- 7o naled in suitable bearings 'rin the frame a. Mounted on the shaft g at proper intervals are the pinions s with teeth .9. The teeth of these pinions engage with the racks if. The racks t are secured to the presser a, said presser extending the entire length of the bending-roll c. The presser "a is supported on the inclined supports a of the frame a, said supports having slots (6 formed therein,

within which the bolts 11, passing through the presser, move. In this manner the presser is moved to and fro when the racks '15 are acted upon by the pinions s.

The forward edge a of the presser u is forked or 'V-shaped, so that when it is advanced into contact with the bending-roll c it forms two'points of contact therewith and conforms more properly with the curve of the roll.

The term bracket as used in the speci- 9o fication is intended to include any kind of a support for the header, whetherformed separate therefrom or integral therewith. It is also apparent that instead of a number of brackets one long bracket extending the entire length of the bending-roll may be employed with'like effect. Furthermore, the term hook-shaped as applied to the shape of said brackets is intended to include any shape which will afford a curved bearing for the header, so that when said beader is turned within said bearing the beading will be formed therein.

The operation of my improved bendingmachine as applied to the manufacture of eaves-troughs is as follows: The galvanized sheet metal of the proper length and width is inserted with one of its edges engaging the groove 9 of the beader f. The metal may be readily inserted by starting it from one end of the groove and pushing it along to the opposite end thereof until it strikes the collar h. The insertion of the metal can be accomplished in this manner on account of the hook-shaped ends being open at the top and not forming a complete circle. The metal will then be in the position shown in Fig. 3. By inserting the handles 7t within the seats j the operators, one at each end of said beader, turn said header to the position shown in Fig. 4, when the bead is formed. The header, together with the brackets having the hookshaped ends, form the heading, said brackets being located near enough to each other to give the proper curve to the metal when the header is turned therein. During this operation the bending-roll c has been locked and prevented from turning by the rod 0t engaging the seat 72' in said roll. The bead having been formed, one of the operators puts his foot on the treadle and lowers the lever Z. By this operation the rod 77. is Withdrawn and the bending-roll c is free to rotate. At the same time the rod 0 is lowered, operating the crank 19 and turning the pinions s. This acts to advance the presser ttuntil its forked edge 11/ is brought into contact with the roll 0, or, rather, into contact with the metal interposed. The bending-roll c is then turned by suitable handles to the position shown in Fig. 5, when the eaves-trough is completed and withdrawn from the machine. Just as soon as the foot is removed from the treadle the rod or again locks the bending-roll and the pinions s draw back the presser it. In this manner without removing the metal from the machine it is accurately beaded and bent to shape. The presser contacting with the bending-roll at two points produces a perfect curve on the metal corresponding to the curve of the roll, while the bending operation is done with great rapidity and ease.

WVhat I claim as my invention, and desire to secure by Letters Patent, is

1. In a bending-machine the combination of a bending-roll, brackets arranged at suitable intervals along said roll, said brackets having hook-shaped ends, the beading-roll fitting within said brackets and adapted to rotate independently of said bendin g-roll,substantially as set forth.

2. In a bending-machine, the combination of a bending-roll, mechanism for locking said bending-roll, brackets arranged at suitable intervals along said roll, said brackets having hook-shaped ends, a beading-roll fitting within said brackets adapted to rotate independently of said bending-roll, substantially as set forth.

3. In a bending-machine, the combination of a bending-roll, brackets on said bendingroll having bolts extending through the same,

said brackets having hook-shaped ends and a beading-roll fitting within said brackets and adapted to rotate independently of said roll, substantially as set forth.

-1-. In a bending-machine, the combination of a bending-roll, a header carried thereby adapted to rotate independently of said bending-roll, and a reciprocating presser having a forked edge adapted to bear against said roll,- substantially as set forth.

5. In a bending-machine, the combination of a bending-roll, a header carried thereby adapted to rotateindependently of said bending-roll, and a reciprocating presser, substantially as set forth.

6. In a bending-machine, the combination of a bending-roll, a header carried thereby adapted to rotate independently of said bending-roll, a reciprocating presser, and mechanism 'for locking said bending-roll and releasing the same and foroperating said presser at the same time, substantially as set forth.

7. In a bending-machine, the combination with a suitable frame, of a bending roll mounted therein, a header carried thereby adapted to rotate independently of saidbending-roll, a lever, connections between said lever and bending-roll for locking the same, a reciprocating presser, and connections be tween said lever and presser, substantially as set forth.

8. In a bending-machine, the combination with a suitable frame of a bendingroll mounted therein, a header carried thereby adapted to rotate independently of said bending-roll, a lever, connections between said lever and said roll for locking the same, a presser having racks thereon, pinions engaging said racks, and connections between said pinions and said lever, substantially as set forth.

9. In a bending-machine, the combination with a suitable frame, of a bending roll mounted therein, a beader carried thereby adapted to rotate independently of said bend ing-roll, a lever, connections between said lever and said roll for locking the same, a presser having racks thereon, a shaft carrying pinions engaging said racks, a crank on said shaft, and a rod connecting said crank and lever, substantially as set forth.

10. In a bending-machine, the combination with a suitable frame, of a bending roll mounted therein, a header carried thereby adapted to rotate independently of said bending-roll, a lever, a rod extending from said lever into a recess in said bending-roll, a reciprocating presser, and connections between said lever and said presser for operating the same, substantially as set forth.

In testimony whereof I, the said J OHN W'IL- LIAM ABRAHAMs, have hereunto set my hand.

JOHN WILLIAM ABRAHAMS.

Witnesses:

ROBT. D. TOTTEN, ROBERT C. TOTTEN.

IIO