US1284516A - Pipe-bending tool. - Google Patents

Description

0. WHITECOTTON.

PIPE BENDING TOOL.

APPLICATION FILED NOV. 7, 1911.

Patented Nov. 12, 1918.

awwuto z Oscar whifecoiton OSCAR WHITE-COTTON, or AKRON, OHIO.

PIPE-BENDING TOOL.

Specification of Letters Patent.

Patented Nov. 12, 1918.

Application filed November 7, 1917. Serial No. 200,766.

To all whom it may concern:

Be it known that I, OSCAR WHITECOTTON, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented new and useful Improvements in Pipe-Bending Tools, of which the following is a specification.

This invention is an improved tool for use in bending conduit pipes and other pipes without flattening the same, the object of the invention being to provide an improved tool of this character which is simple in construction, is strong and durable, which can be used either when in horizontal position or in vertical position and which will work in either direction, from the right or lefthand and which admits of a pipe being readily arranged in position for bending and also enables the pipe when bent to be readily disengaged and removed from the tool.

The invention consists in the construction, combination and arrangement of devices hereinafter described and claimed.

In the accompanying drawings Figure 1 is a plan of a pipe bending tool constructed and arranged in accordance with my invention.

Fig. 2 is a longitudinal central sectional view of the same.

Fig. 3 is a transverse sectional view of the same on the plane indicated bythe line 33 of Fig. 1.

In the embodiment of the invention here shown, a base plate 1 is provided which is of suitable size and shape and which has openings 2 near its corners for the reception of screws or bolts whereby the base plate may be secured on a bench or other suitable supporting object. A bending form 3 is secured on the outer side of the base plate by bolts or rivets 1, preferably rivets. The bending form is segmental and is provided with a peripheral groove 5 more perfect and will not flatten the pipe while bending. A lever 6 is pivotally mounted near the inner end on a bolt 7 which passes through the center of the bending form 3 and the base plate and extends clear through the bench or supporting object. A second hole 7* is provided through the bending form 3 cccentrically located and in which the pivot bolt 7 may be arranged and hence the wheel 9 may be caused to move toward the bent frame as the lever 6 is turned to either side of the base, such eccentric mounting of the lever being especially desirable when short bends are to be formed in a pipe. The bending form is recessed as at 8 on the side 0pposed to the base plate to receive the pivoted end of the lever, as shown in Fig. 2. A bending wheel 9 is mounted for rotation on a bolt 10 which passes through the lever and also through a fork-arm 11 with which the lever is provided, the bending wheel being arranged at a suitable distance from the bending form and having a peripheral groove 12. A tubular handle 13 is detachably screwed to the outer end of the lever as at 14.

A pipe holder and guiding bar 15 is arranged transversely with respect to the base plate 1 and is secured thereto by bolts 16, a spacer block 17 being arranged between the base plate and said bar. The ends of the bar 15 are curved as at 18 and the length of said bar exceeds the diameter of the bending form, one of the curved ends of the bar 15 being adapted to engage a pipe and to hold the pipe in groove 5 of the bending form and with the pipe arranged at either side of the tool, as may be desired.

To use the tool for bending a pipe the lever is first turned to one side of the base plate and parallel with the bar 15, or substantially so to enable the pipe to be engaged with one of the jaws or ends 18 and held in the grooves 5, 12 or between the bending form and the bending wheel. The lever is then turned in the required direction to cause the pipe to be bent around the bending form by the action of the bending wheel, as will be understood. The bending form may be marked to facilitate determining when the pipe has been bent to the desired degree and by correspondingly moving the lever the pipe may be bent to any degree desired. By the arrangement of the bending form and bending wheel in spaced relation and with the space between them unobstructed on the side opposite the lever and also by the arrangement of the holding and guiding bar 15 with its curved ends 18 the pipe may be readily disengaged from the tool after having been bent and moreover the pipe may be applied to either side of the tool and the lever moved toward the right or toward the left as may be desired in bending the pipe.

While I have herein shown and described a preferred form of my invention, I would have it understood that changes may be made in the form, proportion and construction of the several parts Without departing from the spirit of my invention and Within the scope of the appended claim.

Having thus described my invention, I claim A pipe bending tool of the class described comprising a base plate, a segmental bending form on the base plate, a lever pivotally mounted between the base plate and the form, a bending Wheel carried by the lever and arranged in spaced relation to the bending form, and a pipe holding and guiding bar secured on the base plate near the bending form and provided at its ends with means to engage and hold a pipe when the latter is arranged at either side of the bending form.

In testimony whereof I aflix my signature.

OSCAR WHITECOTTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

Images