US549216A - Trace-punch - Google Patents

Description

(No Model.) I

E. SAWYE'R.

TRACE PUNCH.

No. 549,216. 7. Patented Nov. 5,1895.

' UNITED STATES PATENT OFF CE.

ELI SAIVYER, OF BARRE, VERMONT.

TRACE-PUNCH- SPECIFICATION forming part of Letters Patent No. 549,216, dated November 5, 1895. Application filed September 24, 1894 Serial No. 523 ,972. (No model.) 7

To all whom it may concern:

Be it known that I, ELI SAWYER, a' citizen of the United States, residing at Barre, in the county of Washington and State of Vermont, have invented a new and useful Trace- Puncher, of which the following is a specification.

My invention relates to improvements in trace-punching machines in which an under and upper punch are brought into simultaneous action in punching a trace; and the objects of my invention are, first, to provide a tracepuncher conveniently operated by hand levers; second, to punch the trace from both sides simultaneously third, to provide facilities for clearing the knives of the core cut out when the trace is punched; fourth, to so punch the trace as to leave both sides of the edges of the hole made in the trace smooth and unfrayed. I attain these objects by the mechanism illustrated in the accompanying drawings.

Figure 1 is a perspective View of the entire structure of the trace-puncher in a position ready for operation. Fig. 2 is a vertical front view of the trace-puncher when not in use. Fig. 3 is a front view of the knives of puncher with trace inserted between them. Fig. i is a vertical side view of the trace-puncher with handles or levers up, as structure is when not in use. Fig. 5 is a side view of the tracepuncher with handles or levers down. Fig. (3 is a view of the knives of the trace-puncher inserted through the trace with the core cleaner pressed down. Fig. 7 is a side view of the entire structure of the trace-puncher with lever down and core-cleaner in position after driving out the core.

Lever A, Fig. 1, is attached to frame R by bolt S. Lever B is attached to lever A by bolt U. Punch L is kept in place by cleats T T, and engages at its upper end lever A in the slot just in front of bolt S, and is constantly in contact with leverA by means of an upward pressure of spring J. Spring J is attached to punch L by a lug engaging the upper end of spring J. Spring J, acting upon punchL as above described, holds up lever Ain position shown in Fig. 1. Spring J at its lower end rests upon framework R, where it projects forward at P and separates into two standards, between which spring J is placed. Trace- M in receiver G, as shown in Fig. 3.

receiver G consists of a plate with a flange at the front and back side, into which the trace is placed, and this plate is riveted to spring D. Spring D is attached to frame R by a screw inserted through it on the right end that laps over the base of frame R. The other or left end of spring D is free and extends in a lefthand direction when flattened by downward pressure, which it receives when the punch is operated. Punch F projects upward through an aperture in trace-receiver G. Frame R is attached to table P P by bolts or otherwise. Punch F is attached by clip H to base of frame Q by bolts. X shows the opening of punch F at the top of trace-receiver G. Y is the opening of punch F where core of trace drops through after trace is punched. Core-cleaner O is attached to lever B by bolt V and its lower end is held in position by a slot in punch L, through which it passes when driving out the core, as shown in Fig. 7.

The punch is operated by inserting the trace The lever A is operated with the hand by downward pressure, bringing it into position shown in Fig. 5. The downward movement of lever A forces punch L partially through the trace,

and the receiver G, under the force of this downward movement of lever A, recedes and allows the under punch F to cut upward into the trace as the trace is forced down upon punch F when the lever A is brought into the position shown in Fig. 5. Punch F is stationary. The two punches L and F are brought together midway between the upper and lower sides of the trace, and the core, when taken out, leaves the hole N in the trace as shown Fig. 6. This core, if the lever A were returned to position as shown in Fig. 1, would remain in the trace or in one of the punches L or F. To clean the punches, leverB, when lever Ais in position as shown in Fig. 5, is pressed upward by the fingers against the lever A, as shown in Fig. 7. This drives the punchcleaner 0 downward into position as shown in Fig. 7 and the core is forced out of the opening Y in punch F. The result is a clean-cut hole with unfrayed edges without a core being left either in the trace or in either of the punches, as shown by hole N, Fig. 6.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A trace punch comprising a suit ble frame, a fixed punch F, a movable punch L, a bar to which the movable punch is attached, a lever A attached to the frame and engaging the bar, and lever B pivotally connected With the lever A, and a core cleaner 0 movable within the punch L and operated by the lever B, all substantially as set forth.

2. i In combination, in a trace punch a suitable frame, two punches, one of which is movable toward the other, a trace receiver yieldin gly supported above the fixed punch, a core cleaner within the movable punch, a lever A attached to the frame and operating the movable punch, and alever B pivotally connected with the lever A and operating the core cleaner, all substantially as set forth.

3. The combination of a frame R, a fixed punch F attached thereto, a trace receiver yieldingly supported above the fixed punch, a movable punch L, a bar to depress the punch, an elevating spring supporting the bar and withdrawing the movable punch L after depression, a lever A pivotally attached to the frame and engaging the bar, a lever B pivotally connected to the lever A and a core cleaner 0 connected with the lever B and movable within the punch L, all substantially as described.

ELI SAWYER.

\Vitnesses:

JOHN \V. GORDON, V. \V. LAPOINT.

Images