US659163A - Bending-machine. - Google Patents

Description

No. 659,163. Patented act. 2, I900. o. .1. BEAUDETT.

BENDING MACHINE.

(Application filed In. a, 1900.)

(No Model.)

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w gme s se s NlTE STATES PATENT OFFICE.

' OLIVER J. BEAUDETT, OF PONTIAC, MICHIGAN.

BENDlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 659,163, dated October 2, 1900.

Application filed March 5 1900. Serial No. 7,388- (No model.)

To all whom, it may concern.-

Be it known that I, OLIVER J. BEAUDETT, a citizen of the United States, residing at Pontiac, in the county of Oakland and State of Michigan, have invented certain new and useful Improvements in Bending-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention has reference to machines for bending iron rods or bars, and relates particularly to a machine of this type especially designed for forming corner-irons for wagon or carriage bodies.

The invention consists in the novel construction of the machine whereby the bending of the iron may be more readily and quickly effected and in the peculiar construction, arrangement, and combination of the various parts thereof, as will be more fully hereinafter described and shown.

In the drawings, Figure 1 is a sectional perspective View of the machine. Fig. 2 is a plan view of the Work-supporting members and the actuating mechanism for the movable member. Fig. 3 is a section through the machine on line 00 00, Fig. 1; and Fig. 4c'is a perspective view of the corner-iron.

The reference-letter A designates a supporting-frame, upon which is mounted a bed B, preferably a semicircular plate, and upon this bed is arranged the work-holder C.

In construction the work-holder is formed in two sections or members D and E, the section D being preferably fixed to the bed and the member E mounted upon the bed for reciprocatory movement in angular relation to and in alinement with the fixed member D.

The work-supporting member D consists, essentially, of an arm having a groove a formed in its upper face and extending its entire length. Z) designates a stop in the form of an iron rod arranged within a part of the groovea and secured to the arm by means of a clamp c. The member E comprises a similar arm having a similar groove formed therein and provided with a stop 01 and securing-clamp e, as plainly shown in Fig. l. The movable member thus described is pivoted at its meeting end by means of a pinf to the bed and is provided upon its rear edge with a lug g, having one or more apertures, such as it, formed therein. In is a stop against which the member E strikes when its position in alinement with the complementary member has been attained.

Journaled in the frame in any suitable manner for continuous rotary movement is a disk-crank F, and G designates a connectingbar which connects the crank with the movable member E. The connecting-rod G is pivoted at one end, as shown, to the lug upon the movable member by means of a pin f and has a slotz' formed in its opposite end, in which the pinj upon the crank engages.

In operation the bar or rod that is to be bent or formed is placed within the grooves in the movable and complementary supporting members and is held from end wise movement therein by means of the stops referred to. Rotary motion being imparted to the disk-crank the movable member E is moved into angular relation, preferably at right angles to the member D, through the agency of the connecting-rod G and is subsequently withdrawn into alinement with the complementary member, the movement of the movable member into and out of alinement with the complementary member constituting a complete reciprocation.

In order that the bending may be more perfeetly effected, I employ a clamping mechanism H for holding. the bar that is to be bent in the work-holder. The clamping mechanism may be of any approved type; but I preferably employ a construction of mechanism, as shown, consisting of a clamping-plate I, carried at one end of a lever J, fulcrnmed in a bracket K upon the bed-plate, a foot-treadle L and a rod M connecting the lever with the treadle. During the operation of bending the operator by the movement of the treadle causes the clamping-plate to bear against the work and hold the same securely in place while the bending is being effected. It will be obvious from the description of the mechanism as thus set forth that by employing a lost-motion connection such as described between the disk-crank and the movable member the latter will remain at rest for a period of time when in a position at right angles to its complementary or fixed member and when ICO in alinement with said member, thus allowing time for the withdrawal and insertion of the work.

In practice it is not essential that the movable member should remain in an angular position in order to withdraw the work. On the other hand, however, it is extremely desirable that the members should remain in alinement for as long a period as possible in order that the work may be properly placed Within the work holders. I have therefore provided means whereby the period of rest of the movable member will occur only when the said member is in alinement with its complementary member and have also arranged the partsin such manner as will permit the movable member being at rest during one-half of the period of the rotation of the crank. The means I preferably employ consist, essentially, of a spiral spring 0, attached at one end to a pin ct upon the movable member and at its opposite end to an upright P upon the supporting-frame.

In Fig. 2 I have shown in dotted lines the position of the connecting-rod and crank-pin at the time when the bending is to be efiected, the disk-crank being adapted to move in the direction of the arrow. During the movement of the crank from the point a to the point a (shown in dotted and full lines in Fig. 2) the movable member is moved into augular relation with the complementary member. Upon the next quarter movement of the crank from the point last referred to to the point a the reciprocation of the movable member is completed. During the second half of the complete rotation of the disk the crank-pin travels back and forth in the slot in the connecting-bar G and the movable member is at rest, thus allowing sufficient time to insert the work.

IVhile I have shown the preferred construction of machine, I do not desire to be limited to the exact structure, as various changes could readily be made without in any manner departing from the spirit of my invention.

What I claim as my invention is I. In a bending-machine, the combination with a support, a work-holder thereon comprising a movable work-supporting member and a complementary member, the movable member being mounted for reciprocatory movement into angular relation to and alinement with the complementary member, a continuously-operating device, and connections between said device and the movable member whereby the latter is intermittently reciprocated in constant succession.

2. In a bending-machine, the combination with a support, a work-holder thereon comprising a movable work-supporting member and a complementary member, the movable member being mounted for reciprocatory movement into angular relation to and in alinement with the complementary member, a continuously-rotating device connected to and adapted to reciprocate the movable member in constant succession, and means for maintainingthe membersin alinementduring a portion of each period of revolution of said rotating device.

3. In a bending-machine, the combination with a support, a work-holder thereon comprising a movable work-supporting member and a complementary member, the movable member being mounted for reciprocatory movement into angular relation to and in alinement with the complementary member, a continuously-rotating crank connected to and adapted to reciprocate the movable member in constant succession, and means for maintaining the members in alinement during substantially one-half of each period of rotation of the crank.

4. In a bending-machine, the combination with a support, a work-holder comprising a movable work-supporting member and a complementary member, the movable member being mounted for reciprocatory movement into angular relation to and alinement with the complementary member, a crank adapted to be continuously rotated, and a lost-motion connection between the crank and movable member.

5. In a bending-machine, the combination with a support, a work-holder thereon comprising a movable work-supporting member and a complementary member, the movable member being mounted for reciprocatory movement into angular relation to and alinement with the complementary member, a crank adapted to be continuously rotated, a lost-motion connection between the crank and movable member, and a spring acting upon the movable member to move the latter in alinement with the complementary member.

6. In a bending-machine, the combination with a support, a work-holder thereon comprising a movable work-supporting member, and a complementary member, the movable member being mounted for reciprocatory movement into angular relation to and alinement with the complementary member, a clamping device for holding the work within the holder, and a continuously-operating device for reciprocating intermittently the movable member.

In testimony whereof I aflix my signature in presence of two witnesses.

OLIVER J. BEAUDETT.

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