US608484A - seymour - Google Patents

Description

No. 608,484. f Patented Aug. 2, |898. C. SEYMOUR.

PUN'CHING MACHINE.

l (Application filed Dec. 3. 1897,) No Model.) 2 sheetssheet l.

No. 608,484. Patented Aug. 2, |898. c. SEYMOUR.

PUNCHING MACHINE.

(Application ilurl Dec. 3, 1897.)

(No Model.) 2 Sheets-Sheet 2.

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` UNITED STATES PATEN miren.

OI-IARLES SEYMOUR, OF DEFIANOE, OHIO, ASSIGNORV TO THE DEFIAOE MACHINE WORKS, OF SAME PLACE.

'PuNcHlNo-MACHIINE.'

SPECIFICATION forming part of Letters Patent No. 608,484, dated August 2, 1898.

Application filed December 3, 1897. Serial No. 660,686. (No model.)

To all whom it may concern: A

Be it known that I, CHARLES SEYMOUR, of Defiance, in the county of Defiance and State of Ohio, have invented a new and Improved Punching-Machine, of which the following is a full, clear, and exact description.

The invention relates to woodworking machinery; and its object is to provide a new and improved punching-machinemore especially designed for forming a D-opening in handles for shovels, spades, forks, and other articles and devices, the arrangement permitting of forming the opening by one operation in a very simple and effective manner and without requiring skilled labor.

The invention consists of novel features and parts and combinations of the same, as will be hereinafter more fullydescribed, and pointed out in the claim.

Reference is to be had tothe accompanying d rawings, forminga part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a perspective view ofthe improvement. Fig. 2 is an enlarged plan view of the handleholder- Fig. 3 is an enlarged sectional side elevation of the punch with the auger. Fig. l is a plan view of the same. Fig. 5 is a plan view of the handle just prior to completion. Fig. G is a like view of the finished handle. Fig. 7 is a vertical section of the machine, and Fig. Sis a front elevation with the table and adjacent parts in transverse section. f

The improved machine is mounted on a suitably-constructedv frame A, formed in its upper portion with a bearing A' for the reception of the reduced upper end B' of a depending punch or chisel B, having its lower cutting edge B2 in the shape of the outline of a D for forming an opening D' in the blank of the handle D, as is plainly shown in Fig. 6. The chisel or punch B is made hollow, and in it revolves an auger E, having its cutting edge E' within the cutting edge B2 of the chisel B, as plainly indicated in Fig. 3, so that the auger cuts out the major portion of the handle-blank and forms the opening D', and the cutting edge B2 of the chisel B punches out the rest of the material and completes the opening D. To attain this end, the lower portion of the auger is increased in width, so as to reach into immediate proximity with the circular 'edges of thechisel. It may be seen from Fig. 3 that the chisel B is provided with an interior bevel at its lower end to form the cutting edge. This bevel extends entirely around the cutting edge of the chisel. The auger E, which runs through the chisel, has its lower end enlarged, so as to extend into immediate proximity with the edges of the chisel. This arrangement results in the placing of the cutting edges of the auger in a plane below the upper edge of the bevel of the chisel, so that a clearance-space 'is thus provided through which the chips cut by the auger may be moved, and thus clogging of the auger is prevented.

The shank E2 of the auger E is secured in a tool-holder F, secured on the shaft of a pulley F', connected by a belt F2 with other machinery for imparting a rotary motion to the said pulley F', the tool-holder F, and the auger E, so as to rotate the latter within the chisel or punch B.

The handle-blank of the handle D is fed to the punch B and the auger E, and for this purpose I provide Ya holder Gr, secured on the top of a bracket-'shaped slide Il, mounted for vertical movement on the front of the frame A and provided with a U-shaped projection I2, between the arms of which is located a pivotally-connect-ed pitman I. The pitman I is connected inV turn with a crank-arm J on the'forward end of a transversely-extending shaft K, mounted to rotate in suitable bearings in the lower portion of the frame A.

On the rear of the shaft K is secured a gear-wheel K', in mesh with a pinion K2, journaled on a stud carried by the frame A and attached to a friction-disk K3, adapted to be engaged by a friction-pulley K4,1nounted to rotate loosely on the stud and connected t by a belt K5 with suitable machinery for imparting a rotary motio'n to the saidpfrictionpulley K4. The latter is shifted transversely IOO and pitman I impart a vertical reciprocating motion to the slide ll and the holder G.

The holder G is in the form of a horizontally-disposed table formed on its top with a longitudinally-extending guideway G, in which are mounted to slide toward and from each other plates G2 lf3, formed with right and left hand nuts Gi G5, engaged by corresponding threads on a screw-rod L, mounted to rotate in a suit-able bearing G, carried by the holder G. The screw-rod L is provided with ahand-wheel L', under the control of the operator, for turning the screw-rod so as to move the plates l2 and Gsimultaueously toward or from each other.

On the top of.' the plates G2 and Gil are pivoted the cheeks or clanming-jaws G7 GS, respectively, adapted to engage the sides of the handle-blank to securely hold the same in place during the formation of the opening D'.

In the holder G, between the cheeks G7 ls, is formed an opening` for the passage of the material punched out of the blank by the chisel l; and a portion of the material eut by the bit E of the auger E. Attached to the bottom of the horizontal portion ofthe slide H and surrounding the opening Gl2 therein is a chute Gl1 for receiving and discharging the chips that drop from the opening Gf in the table G. This chu te passes forwardly and downwardly between the arms ot` the U-shaped projection l2, before described. The holder G is also provided with a rest G7, extending in front of the machine beneath the bearing G, as shown in Fig. l, for the shank D2 of the handle D to rest on, as is plainly indicated in the said Fig. l..

'lhe operation is as follows: The handle, with its blank, is passed between the cheeks G7 Gsgand the operator upon turning the handwheel L' moves the cheeks toward each other, so as to clamp the blank in place directly over the opening l, The operator now presses the pedal K7, so as to throw the friction-pulley K" in engagement with the friction-disk K3 and impart a vert-ical reciprocating motion to the holder Gand the blank carried thereby, as previously explained. The blank in its upward movement is brought in Contact with the cutting edge ll2 ofthe chisel l5 and in contact with the bit E ot the auger E, and as the latter rotates at a high rate of speed it cuts ont the blank, and the cutting edge B2, moving with it', simultaneously punches or chisels out the remainder of the material in the blank, finally forming the opening D'. On the downward movement of the holder the Finished handle is carried along and moved out of engagement with the Iixed chisel ll and the auger revolving therein. The operator now turns the hand-wheel L' in the opposite direction to open the cheeks G7 GS and remove the iinishcd handle and to place another blank in position. The above-described operation is then repeated.

It is expressly understood that the cutting edge of the auger extends close to the bevel forming the cutting edge B2 for the chisel B, so that the two cutting edges coact tor the removal of the material to vform the D-opening in the handle.

llaving thus fully described my invention, l claim as new and desire to secure by Letters Patent- In a punching-machine, the combination with a frame and the punching-tool carried thereon, of a lnacket-shaped slide mounted to move vertically on the frame and havingr a horizontal portion provided with an opening, a chute attached te the bottom ot the horizontal portion of the slide and surrounding the opening to conduct the chips theretrom, a U-shaped projection straddling the chute and attached to the horizontal portion of the slide, means in connection with the projection by which to impart reciprocal movement to the slide, a holder mounted on the horizontal portion of the slide and having a eentrally-located opening registering with the opening in the slide, the holder also havinga horizontal guideway in its top face, plates mounted to slide toward and from each other in said guideway, clamping-jaws respectively attached to the plates so as to hold the work between them, and means carried by the table for moving the plates toward and from each other to grasp and release the work.

CHARLES SEYMOUR.

Witnesses:

WILLIAM A. Kirr'ruNmNc, Josnrn lAUnn.

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