US896207A - Metal-bending tool. - Google Patents

Description

I Arm-896,207.

"PATENTED AUG. 18, 19-03; I L..P. HAZEN. METAL BENDING TOOL.

APPLIOATION FILED DEG.21,1906.

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LEVI r. HAZEN, or CINCINNATI, OHIO,

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Specification of Letters Patent.

Patented Aug. 18, 1908.

Application filed December 21, 1906. "Serial No. 348,842. I

' To all whom "it may concern:

' zen o resident of Cincinnati, in the county of Hamv ilton and State'of Ohio, have invented cerby the latter is manipulated in the bending Bait known that I, LEVI P. HAZEN, a citii' the United States of America, and a tain new and useful Improvements in Metal- Bending Tools, of which the following is a specification. 1 Y

This invention relates to devices for bending metal bars or the like, andit consists in the provision of a base, a shaping-block or head on said base, a block movably'mounted on said base to form, with said shapingblock, a pair of jaws for holding the metal to be bent,'a block pivotally-mounted on said base adjacent the said jaws, a block-movablymounted on said pivotal-block and forming a carrying or forcing jaw for the' ortion of the metal to be bent,and a suitab e lever mechanism mounted on said pivotal-block whereoperation.

Other featuresiofthe" invention will be re- .ferred to in the description of the accompany- 25 I ing drawings, in which, 1

Figure 1 is a plan view showing my invention in which a pair of levers are used, the

bending-jaw being shown at the close of a bendin -stroke in connection with a piece of icallysupp'ort the working parts of the device I that I will now describe. I

2 indicates an elongated bar forming shapingebloc k and rigidly attached to the upper face of the base-hlock by means of screws 3. Block 2 has a rounded inner cornor 0, around which the bars to be bent are shaped,the inner portion of the bend in the bar taking-around this rounded corner for facilitating the operation.

4 indica tcs a metal block having a series of open; slots .5 made therein and adjustably secured to the base hlock by means of screws 6 passing through said slots 5. The fore and 4 of the block 4 is upturned or flanged. to form a jaw-edgc parallel to the inner face of the shaping-block 2, the space between the fore edge of block 4 and theinner edge of the block 2 being adapted to receive the metal bars to be bent and said shaping-block and block 4 "forming a clamping-jaw to securely hold the metal in place'for bending.

7, 7, indicate a pair of set-screws in the upfturned portion 8 at the rear edge of the base 1, for use in setting up the jaw-block 4 toward the shaping-block 2 to suit the width or thickness of the metal to be held or placed between the jaws for bending. The screws 6 are loosed when it is desired to adjust the :clamping-block 4 on the base, and the screws 7 'servenot only in adjusting the block 4 toward the block 2, but form a firm back-stop for said block 4 to obviate any undue strain on the screws 6 when the device is being 0perated 1 i 9 indicates a swinging-block, pivoted at 10.

to the upper face of base 1 and provided with a plate 11 having a series-of parallel, open slots 12 through which pass screws 13 whereb the plate 11 is adjustably mounted on the b ock 9 similar to blockor plate 4 on the base. 1. 4

. 11 is an upturned flange at the inner end of plate 11,"similar to the flange '4' on the late 4 and serving to increase the j awsur-.

ace to suit the various widths of. material placed in the devicelfor bending.

9 is an upturned flange on the swingingblock 9,- at its rear end, screws 14 being provided therein, similar to screws 7 in the flange 8 of the base 1, for use in forwardlyadjusting and back-stop ing the movablelate 11 to suit the widt ofmaterial to be f.

15 represents a-lever projecting from one side of the s'winging-block 9 and provided with a'suitabl'e narrow grip or handle 16 for :manipulating said swinging-block on its pivot 10 to and from contiguifijgs-contact with the rearward part of base 1 that carries the jaw-block on plate 4.

17 is an auxiliary lever pivotally connected at oneend with an angular arm 18 projecting from the fore end of the base 1 and coupled to said lever'15'by meansof a link 19 so that they may operate in unison when using both hands in exertingthe desired power to operate the device especially ,on thick or heavy metal bars, suchas"is shown at min Figs. 1,

2 and 3. 4

In operation, the lever 15 is extended laterally so that the straight bar of metal to be bent can rest in the space between the jaws formed by the blocks 2 and 4 and the part to iibe bent extending outwardlynand; laterally beyond the rounded edge or corner 0 ofthe block 2 The lever 18 then drawn toward the person, carrying with it the swingingblock 9 carrying the jaw 11, the latter carrya use of the device is to prepare reinforcing rods or bars for use in concrete work, where many bends of ditferent degrees are desired and necessary and which heretofore have been made by heating the barsand bending them by hammering overenvils and shapingblocks, which has been a very slow and eX- pensive inetho'd'and the heating of the metal weakening the same at the bending point.

In the use of my device the metal is bent cold and thus no material weakening thereof at the bending point results and no skilled labor is required in handling the device such as is necessary when the metal is heated and hammered .I claim A device of the character described, comprising abase-block, a shaping-block or jawmember, a movable jaw-member adjacent said shaping-member, a swinging-member mounted on said base to coact with one end of said shaping-member, a hand-lever on said swinging-member, a hand-lever on the base-block and a link connecting both. said lovers to act in unison.

LEVI P. HAZEN Witnesses JOHN ELIAS JoNEs, Norma KEISER.

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