US1539118A - Angle-iron bender - Google Patents

Description

May 26,1925. 1,539,118

J. JENSEN 4ANGLE IRON BENDER Filed April 421, 1924 @f/Wma@ llA Patented May 26, 1925i.

UNITED STATES PATENT OFFICE.I

JOI-IN JENSEN, OF ROCKFORD, ILLINOIS, :ASSIGNOR TO WHITNEY METAL TOOL IPANY, OE ROCKFORD, ILLINOIS, CORPORATION OE ILLINOIS.

ANGLE-IRON BENDER.

Application filed April' 21, 1924. Serial No. 707,854.

To @ZZ whom t may concern.' Be it known that I, JOHN JENsnN, a citizen of the United States, residing in Rockford, in the county of 7Winnebago and State of Illinois, have invented a certain new vand useful Angle-Iron Bender, of which the following is a specification.

The invention pertains to a means for bending angle-iron bars `which have been notched vorsheared to facilitate the operation of forming a right-angle bend in the bar with a` miter joint.

The object of' the invention generally stated, is to provide a means of the character indicated whereby the bending operation may be performed effectually and expeditiously.

More specifically stated, one object of the invention is to provide an angle-iron bender having means of an effectual character for clamping the work in position for the bending operation and which is so arranged as not to interfere with the movements of the actuating member. 1

Another object is to provide an advantageous arrangement for the bending means with respect to the anvil or block upon which the bar is bent.V

A further object is to provide a constructionV which is relatively simple in character and also strong and durable.

In the accompanying drawings,

Figure 1 is a plan view of my improved bender with a notched angle-iron bar clamped in position thereon `readyy for the bending operation, the lever of the bending means being broken away;

Fig. 2 `is an end view of the bender, the work being shown in section;

Fig. 3 is a fragmentary plan view showing the parts in the position Vwhich they occupy at the complet-ion of the bending oper-4 eration; and Fig. 4 is a vertical sectional view taken in the' plane of line 4 4 of Fig. 1.

rIhe device comprises a base 7 constructed to provide near its forward edge a seat 8 for a rectangular block 9 so as to support the latter in an elevated position extending transversely of the base. Said block constitutes an anvil over which the bar is shaped to form the right angle bend therein. It may be secured in position upon its seat in any suitable way. 7a indicates a rest rising from the base, to the right of the anvil,` to assist in supporting thework in position.

The base 7 has a recess 10 in itsk central rear portion fianked atopposite sides vby upstanding flanges 11. In'the presenty instance these flanges are shown as continued at right angles and apertured to receive bolts 12 whereby the base may be secured to any suitable support as for example to avshearing machine `or other `device for performing some auxiliary operation upon the bar.y Between said flanges 11 I mount a vertically disposed lever 13 pivoted to the flanges preferably by means of a trunnion 14 extending throughout the widthof the lever which corresponds in width to the distance between the two iianges. Upon the uper end of this lever I provide a clamping member 15 in the form ofa block the forward face of which is adapted to engage the rear face of the vertical wall or leg of the angle iron bar placed upon the block or anvil 9. Said clamping member has ka pair of rearwardly extending lugs 16 near its opposite ends which are pivotally secured to the upper end of the lever lby means offa trunnion 17v extending through the upperpend of the lever.l

For operating the clamping member 15 I provide a screw 18 threaded in the base below the-anvil 9 and extending in a front to rear direction. The forward end of said screw is provided with an operating rod 19 slidably mounted in the head 2O of the screw, and the rear end oft-he screw extends into the recess 10 between the flanges 11 and engages with the lower end of the lever 13, as will be readily apparent from Fig. 2. It will be observed that the clamping means is sojlocated as to be disposed entirely below and rearwardly of the work so as not to interfere with the operation ofl the bending means to be presently described.

As above indicated, the angle iron bar to be bent is notched or sheared previously to its insertion in the bending machine to facilitate the formation of the miter joint as is common practice. As shown in Fig. 1, the bar A has a V-shaped notch a in the horizontal wall or leg of the anvil. The bar is so placed that the apex of said notch coincides approximately with the rear corner of the anvil around which the bar is to be bent. Also substantially coinciding with said corner is the fulcrum of the operating or bending lever. In the present instance, this lever comprises aI pivotedE por'- ton 21, one end of which is mounted upon a bolt 22 which constitutes the fulcrum for the lever.- 4 The other end of the lever isconstructed to iorrny a socketfor receiving the end of anA operating rod or handle 23. The bolt 22 may be mounted in the' base as shown clearly in Fig. 4.

Pivotally secured to the portion 2l of the operating lever is a pressure member or shoe 24 of substantially triangular form, the' shoe being pivoted at its apeXkas at 25. v The are' rangement is such that the heel of' the shoe engages with the work adjacent the' bending corner of the` anvil, and it will be apparent: thatin the operation of the lever the shoe will' maintain a firm seat upon the work. The location of the fu'lcrum of the lever sub-V staiit'iallyv coincident with the bending cor= ner of the anvil and the apen of the notch in the work renders it possible to perform the bending operation with a minimum expenditureof effort.

It willV be seen that I have produced an angle iron bender of a thoroughly practical character'. The work may be quickly and easily clamped in position and removed from the machine and the bending operationA may be periorr'ned easily and eflectually to produce a Clean sharpbend. Also the work may be firmly held in position and the holding or clamping means is so located asnot to intertere in 'any way with the operation of the actuating lever. p

I claim as my invention l. An angle iron-bender comprising a base having an upstandingportion providing an anvil, a lever having a clamping member pivoted at one end, said base also having a pair of spaced upright flanges between which saidl lever is pivotally mounted between its ends, a screw mounted to turn in the base and disposed between said flanges so as' to be operable into engagement with the lower end ofl said lever whereby to move said clamping member toward the anvil to clamp the work therebetween, and a lever pivoted on the base to turn on an upright axis and having a part adapted to 'engage with the work adjacent one corner of the anvil to bend it around the anvil at such 'corner.

2. An angle-iron bender comprising in combination a base having an anvil at its forward edge rising above the base, a lever pivoted between its ends on the base to turn on a horizontal axis spaced rearwardly of said anvil, a, clamping member pivoted to the upper end ot saidv lever and adapted to coact with the rear face of the anvil to clamp the work, a screw mounted in the base with its rear end engaging the lower end of said lever and its forward end provided with an operating handle, and a lever pivoted on the base to turn on an upright axis adjacent onecorner of the anvil and having a s-hoe-piv0ted thereon adapted to engage with thework to' bend it around said corner of the anvil.

3. An angle-iron bender comprisingabase having a` rigid upright block extending longitudinally of the base and adaptedv to support an angle-iron bar placed on its upper rear corner, a. pair of upright supports on the base extending transversely thereof rearwardly of said block and arranged in longitudinally spacedrelation, a member entered between said upright supports and pivoted thereto between its ends, a clamping member of substantial length having on its rear face a pair of bearing portions between which the upper end of said member is pivotally secured, means mounted in the base adaptedl to engage with the lower end or' said member to swing it rearwardly and thereby `move the clamping member forwardly into engagement with the work on said block, and means mounted on. the base near one end oi the block adapted( operatively to engage with the work to bend it upon the block.

4, An angle-iron bender comprising in combination a base having near its forward: edge an anvil portion, an upwardly extend ing lever disposed behind said anvil and pivoted intermediate its ends to said base, a clamping member on the upper end oitl said lever, al screw mounted inA said base andy engaglingA at its rear end, with the lower end of said lever, means operable from a point iny front of said anvil toturn said screw whereby to bring said clamping member into gripping relation with said anvil, and a bending lever mountedonsaid base nea-r one endof saidanvil.

affixed my signature.

JOHN JENSEN.

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