US2481057A - Box stitching machine - Google Patents

Description

SQM. 6, 5 N. A. YOUNG ET AL BOX STITCHING MACHINE 2 Sheets-Sheet 1 Filed NOV. 25, 1946 BY e 4 ATORNEY.

N. A. YOUNG ET AL BOX STITGHING MACHINE 2 Sheets-Sheet 2 INVENTORS.

m Z R. T BUM/w m M T Z M M Filed Nov. 23, 1 946 Patented Sept. 6, 1949 2,481,057 BOX s'rrromNG MACHINE Nicholas A. Young and Peter iii-chm, Racine,

Wis., assignors Racine, Wis.

to American Machine Works,

Application November 23, 1946, Seial No. 711,862 1 Claim. 1-15) Our invention refers to wire stitching machine and it has for its primary object to provide controls for manually shifting the clinching post, followed by manually closing an electric circuit for starting the staple forming and stitching mechanism, whereby boxes or fiber containers may be finished by an operator feeding the box accurately and in a simple manner to stitch the same along the edge lines of said box to complete it.

A further object of our invention is to provide a foot actuated stirrup for shifting the clinch ing post from its idle position to its working posi tion, an alinement with the stitching mechanism and thereafter through a foot pedal manipulation, carried by the stirrup, an electric circuit is closed for actuating the stitching device, it being understood that a switch so actuated is caged within the stirrup whereby it is protected against inadvertent closure. In other words, two distinct foot operations are required when the machine is put into motion.

The stitching machine, to which my invention is applied, is of a standard type now in usage, such, as for example, as is disclosed in Patent No. 2,347,908, embodying certain specific features not used by applicant.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the novel construction, combination, and arrangement of parts, substantially as hereinafter described, and more particularly defined by the appended claim, it being understood that such changes in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claim.

In the accompanying drawings is illustrated one complete example of the physical embodiment of the present invention constructed accordin to the best mode so far devised for the practical application of the principles thereof.

In the drawin s:

Figure 1 represents a side elevation of a wire stitching machine embodying the features of my invention with certain parts broken away and in section to more clearly illustrate structural features.

Figure 2 is an enlarged fragmentary front elevation of a standard supporting for the clinching pos Figure 3 is a fragmentary plan view illustrating the clinching stirrup and associated press button switch.

Figure 4 is an enlarged sectional elevation of the standard clutch mechanism, the same being indicated upon line 4-4 of Figure 1.

Figure 5 is a diagrammatic view of the electric circuit for controlling the clutch mechanism associated with solenoid.

Referring by characters to the drawing, I indicates a goose-neck frame carrying at its neck end the usual wire reel 2 and stitching head 3 which comprise the staple driving mechanism.

A bracket 4 is secured to the base of the frame carrying a trunnion 5 upon which is pivotally mounted the bottom shoe of a standard staple "clinching post 6 adapted to be swung from an inclined box receiving position into alinement with the staple driving mechanism as indicated in dotted lines of Figure 1.

The bracket 4 has also journaled therein a stud shaft 1 carrying a socketed cam lever B, whichcamlever socket engages a stud 8, carried by the bottom shoe portion of the pivoted clinch post. A coil spring I is connected to the clinch post shoe and the hub portion of the cam lever 8, one end of the spring being eccentrically connected with the stud shaft 1 through the hub portion of the cam lever.

The coil spring I is under constant tension and tends to draw the post and cam towards each other, whereby, as shown in Fig. 1 of the drawings, the post is held at an angle away from the stitching head 3. Hence, when the post is swung by the stirrup 9, in alignment with said stitching head, it is under greater spring tension and will thus return the post to its idle position when the foot pressure is released from the stirrup 9, to thus withdraw the post from its functioning to its idle position, as shown in Fig. 1 of the drawings.

The stud shaft I has also secured thereto a stirrup 9 for rocking the "clinching post. All of the above described mechanism is of standard type and forms no part of my invention. The connecting portion 9' of the stirrup legs has pivotally mounted thereon a foot pedal Ill. The heel of the pedal, as shown in Figure 1 of the drawings, normally rests upon the floor surface when the clinching post is positioned at an angle clear of the staple driving mechanism.

Nested within the stirrup, upon the floor surface, is an electric push button I I and said push button is connected by wires I2 to an encased solenoid I3 suitably anchored to the frame.

The frame I also carries an electric motor I3 in belt drive connection with a shaft I 4, which shaft, through its coupling connections, imparts driving power to the staple mechanism, all of which mechanism forms no part of my present invention, but is of standard type.

As shown in Figure 4 of the drawings, the coupling connection of the shaft I4 embodies a clutch mechanism I5 which includes toggle connections and a pivoted bell crank lever I6, the same being in link connection with the solenoid 1-3.

When the solenoid is energized, the clutch mechanism couples the motor driven power to the shaft I4 whereby the staple mechanism' receives its driving power.

As illustrated in the diagrammatic view, "Figure 5, the line wire I2 enters the box containing the solenoid and from thence leads to a switch -II for manually making and breaking the circuit.

From said switch, a line wire I2 is connected to the motor I3, which motor is also connected by a branch wire from one of the circuit Wires IE, it being understood that the companion circuit wire I2 is connected by albranch to the wire I2 whereby the circuits are completed. This electric wiring and mechanism also forms no part of my present invention.

From the foregoing description .it is obvious, when a box or container is inserted over the staple, clinching postithepost is swung'in position for stapling the box along its edges. This movement 'of said post is effected by the operator placing his foot upon the stirrup pedal, as indicated in dotted lines and thereafter the pedal is pressed downwardly causing the stirrup to follow the downward movement, whereby the post "-is manually held in its stapling position.

After accomplishing the above movement, the toe of the operator's foot, as indicated in dotted lines, may be pressed downward whereby the push button II is engaged and closes the solenoid circuit to thus energize the clutch mechanism whereby the staple driving mechanism is put into action and the stitching of the box will result.

Hence, it will be noted that the machine is controlled first by independent manual foot movement followed by simply closing a push button switch for bringing into action the stapling mechanism, by shifting the clutch I 5.

We claim:

In a wire stitching machine, the combination of a staple driving mechanism, means for operating the staple driving mechanism, a clutch device for throwing the staple driving mechanism into and out of operation, a solenoid for actuating the clutching device, a pivoted clinching post associated with the staple driving mechanism, a spring for holding the post in its idle position, a cam lever for actuating the post in opposition to its spring tension, a foot actuated stirrup carried by the cam lever, a foot pedal pivoted thereto, and a push button switch nested within the stirrup and electrically connected to the solenoid, the switch being 'closed by foot action upon the pedal, following depression of the stirrup, to shift the clinching post in alinement with the aforesaid staple driving mecha- .nism.

NICHOLAS A. YOUNG.

PETER BREHM.

REFERENCES CITED UNITED STATES PATENTS Name Date Number Hoflert May 2, 1944

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