US919206A - Rod-bending tool. - Google Patents

Description

J C. NEWLIN. ROD BENDING TOOL.

APPLICATION FILED JAN. '1, 1908.

.91 9 20 Patented Apr. 20, 1909. I

UNITED STATES PATENT OFFICE.

7 JAMES C. NEWLIN, OF PHILADELPHIA, PENNSYLVANIA.

ROD-BENDIN'G- TOOL.

To all whom it may concern: 7

Be it known that I, JAMES C. NEWLIN, a citizen of the United St ates, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Rod Bending Tools, of which the following is a specification.

The object of my invention is to provide a simple and effective implement for bending rods and my invention is especially applicable for use in bending rods used in reinforcin concrete work.

In t e accompanying drawing z-Figure 1, is a perspective view of my improved rod bending tool; Fig. 2, is a plan view; Fig. 3, is a vertical sectional view on the line 33, Fig. 2 Fig. 4, is a sectional diagram plan view; and Fig. 5, is a view of a bent rod.

A is the base late to which are secured two uprights B, spaced a given distance apart and forming bearing edges b, b for the rod to be bent.

D is a bending lever having a handle d and an arm (Z; this bending lever is mounted on a pivot pin 0 mounted in the uprights B, B and is held central between the uprights by sleeves c, c mounted on the pin. The arm (I of the lever has an edge curved in the manner shown clearly in Fig. 3 and is slightly hooked as shown at (1 so as to engage the rod. The base plate A is slotted at a to allow for the movement of the arm 01 of the bending lever so that a rod placed at the corners a; will be bent when the lever is moved to any degree desired, as clearly shown in Fig. 4.

In bending rods for reinforcing concrete structures it is essential that the bends in the rods shall be uniform and in order to limit the movement of the bending lever D, I provide an adjustable block t confined to the base plate A by means of a bolt t" which passes through the slot (1 in the plate and is provided with a handled nut i so that the block t can be adjusted and secured in the slot to limit the movement of the lever.

Specification of Letters Patent.

Application filed January 7, 1908.

Patented April 20, 1909.

Serial No. 409,605.

When the lever is moved to its full extent the rod to be bent will come in contact with the block.

In operating the device a rod is placed in position in the base A against the bearing edges b; the rod being preferably marked at the points at which it is to be bent. When the rod is in place the lever is forced against it, causing it to bond as shown in Fig. l,

until it comes in contact with the stop block 01. The lever is then released and the rod moved until another mark comes in line with the lever when the rod may be again bent.

In Fig. 5, I have shown a rod bent by my improved tool, but it will be understood that rods may be bent in other shapes according to the design required.

1. The combination of a slotted base plate having two uprights mounted on the base plate on the respective sides of the slot, a

ever pivoted to the uprights and having a handle and a bending arm, said bending arm extending into the slot, and a stop adjustably mounted in the slot so as to limit the movement of the bending arm.

2. The combination of a slotted base plate, two uprights, one mounted on each side of the slot, a lever pivoted to the uprights'and having a handle and a bending arm arranged to travel in the slot of the base plate, a stop block mounted on the base plate, and a bolt and nut, the bolt passing through said block and through the slot in the base plate so as to retain the block in an adjusted position to regulate the amount of movement of the bending lever.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JAMES C. NEWLIN I/Vitnesses Jos. H. KLEIN, WM. A. BARR.

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