US1083290A - Perforating-machine. - Google Patents

Description

I'. A. McCALL.

PBBPORATING MACHINE.

APPLICATION FILED MARHB, 1912.

1,083,290. Patented Jan/6,1914.

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Patented Jan. 6, 1914.

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COLUMBIA PLANOCIRAPH 60., WASHINGTON, D. c

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THOMAS A. MGCALL, OF CINCINNATI, OHIO, ASSIGNOR TO THE NATIONAL AUTOMATIC TYPEWRITER. COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

PERFORATINGr-MACHINE.

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Specification of Letters Patent.

Patented J an. 6, 191a.

To all whom it may concern:

Be it known that I, THOMAS A. MoCALL, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a certain new and useful Improvement in Perforating- Machines, of which the following is a full, clear, and exact description.

The object of this invention is to provide a machine with which an operator, by properly manipulating finger keys, may cause perforations to be so made in a strip of paper that said strip may subsequently be used to control the automatic operation of a typewriting machine or any other analogous machine.

The invention consists in the construction and combination of parts hereinafter described and pointed out definitely in the claims.

In the drawings, Figure 1 is a sectional side elevation of a machine embodying the invention. Fig. 2 is a fragmentary view showing the top of one of the punch bars and its trigger together with the trigger detent device showing the positions they will occupy with respect to each other and with respect to the depressor bar and trigger return bar when the trigger has been released. Fig. 3 is a vertical sectional view of the machine in the plane indicated by line 33 on Fig. 1, but when only a part of the punch bars and their associated mechanisms are in place. Fig. 4 is a fragmentary section in the plane of line AA on Fig. 1.

In the machine is a transversely extended horizontal die plate 1 having a transverse row of vertical perforations 1 Just above it is a punch guide bar 2 in which are vertical perforations 2 which are alined with the perforations in the die plate. There is a narrow space between said die plate and punch guide bar through which the paper strip 3 to be perforated may pass. Behind these two perforated pieces is a feed roll 11 on which, when the roll is turned, the paper will be wound to draw it along over'said die plate. This roll will be turned in step by step movements of suitable length to draw the paper the right distance required after each hole has been punched therein by mechanism which will be described.

There are a large number of punches l,- as many as there are distinctive operations of the typewriter or other machine to be controlled by the finished perforated strip. Each punch is associated with and secured to the lower end of a punch bar 5 which moves endwise vertically in slitted guide bars 66. These punch bars are thin metal plates; and the punches may be of any cross section in shape, depending upon the char acter of the holes which it is desired to make in the strip. A trigger 7 is pivoted to each punch bar, and is normally held in an inoperative position by a detent 9. This detent in the form shown is a thin bar which is slidable horizontally forward and backward in a suitable guideway. A spring 9 acts to move this detent backward and hold it in the position where it will engage with a little laterally projecting finger 7 which is integral with the trigger, and thereby hold the trigger in the inoperative position.

The punch bars are arranged in a row transversely of the machine, and each is normally held in its raised position by means of a spring I secured to a fixture above the punch bar. Just behind this row of punch bars is a'horizontal depressor bar 8 which is vertically movable. Its ends are connected with two vertically movable slides 15 which are guided upon fixed vertical guide bars 14. Each slide is connected by apitman 16 with a crank pin 17 carried by the driving shaft 17. This shaft is to be constantly rotated while the machine is in use; and consequently these slides and the depressor bar are in constant movement up and down.

Each trigger 7 is pivoted on a horizontal transverse pivot 7 to its associated punch bar. Each trigger has two arms 7 7 It is with the latter'lower arm that the pivot 7 engages, and this lower arm projects always behind the punch bar. In the upper arm there is a slot 7 into which projects a pin 5 fixed to the punch bar. A spring "l' acts upon the trigger tending always to so swing it as to carry the upper arm 7 rearward so that it will project'behind the associated punch bar. As before stated, it is restrained from making this spring-induced movement by the detent slide 9. Associated with each of these detent slides is a key lever 18, a bell crank lever 19 which is pivoted to a fixture, and a gravity pawl 20 which is pivoted to the detent bar 9,which pawl has a finger 20 which by engaging with the top edge of slide 9 limits the downward movement of the pawl. A pin 18 carried by the key projects into a slot 19 in the horizontal arm of the bell crank 19. The laterally extended finger 19 on the upper end of the bell crank lies just behind the lower end of the gravity pawl 20. lVhen, now, any key 18 is depressed its associated train of mechanism will be operated so as to draw the detent 9 forward and thereby release the associated trigger 7. That is to say, the downward movement of the key will rock the bell. crank lever 19 and the finger 19* thereon by engaging the gravity pawl 20 will push it forward. This, of course, produces a like movement of the detent slide, and this movement is suflicient to release the trigger, which thereupon flies to the position shown in Fig. 2. The key may be depressed so far that the upper end of the bell crank lever will snub past the gravity pawl 20. In any event, when the force tending to draw the detent forward is withdrawn, the spring 9 will immediately draw the detent rearward to its normal position. In this rearward movement the gravity pawl 20 may engage the finger 19 but the rear side of said pawl is beveled and this will cause the pawl to be automatically lifted so that it may pass and drop in front of the said finger.

When the trigger has been released and moved to the position shown in Fig. 2, the depressor bar will in its next downward movement engage the arm 7 of the trigger and will move it and the punch bar to which it is attached downward, thereby punching a hole in the paper strip. There is also a trigger return bar 21 fixed to the two slides 15, and extending horizontally across the machine and lying beneath all of the arms 7 of the triggers. hen the slides 15 go up, this trigger return bar will engage the arm 7' of the displaced trigger and will swing it backward so far that as the punch bar goes up the finger 7 will engage the detent 9, whereby the trigger will be moved to and then held in its normal retracted position.

If by any chance the trigger is displaced above the detent, and is then moved down, nothing will be broken because the finger 7 c will engage the beveled end of the detent and force it forward against its spring, thus allowing the trigger to pass.

The feed roll 11 has fixed to one end a ratchet 22. A lever 23 carries a pawl 24 for engagement with this ratchet. This lever 23, and another similar lever are pivoted on alined pivots to the machine frame; and a bar 25 extends between and is connected with these levers, the front edge of said bar lying beneath and in engagement with a shoulder 5* on each of the punch bars. When, therefore, any punch bar descends, it will push this bar 25 downward, thereby engagement with ratchet 22 will turn the feed roll through the required arcual distance. A spring 26 rocks in the contrary direction this pawl-carrying frame which consists of the two levers 23 and the bar 25. Having described my invention, I claim: 1. In a perforating machine, the combination of a row of vertically movable punch bars, a vertically reciprocating horizontal depressor bar, a spring actuated trigger car- "ried by each punch bar and adapted to be moved by its spring into the path of said de pressor bar, a detent device associating with each trigger and normally acting to hold it out of the path of said depressor bar, and keys and means whereby they may severally withdraw the detents. V

2. In a perforating machine, the combination ofa row of vertically movable punch bars, a vertically reciprocating horizontal depressor bar, a spring actuated trigger car ried by each punch barand adapted to be moved by its spring into the path of said depressor bar, a detent device associating with each trigger and normally acting to hold it out of the path of said depressor bar,

means whereby the keys may severally withdraw said detent devices, and a horizontal trigger-return bar which ismovable vertically in unison with the depressor bar and is adapted on its up stroke to engage any released trigger and move it into such position that it will engage the detent when the punch bar moves up.

3. In perforating mechanism, the combination of a row of vertically movable punch bars, a vertically reciprocating horizontal depressor bar, spring-actuated triggers car ried severally by the punch bars and the pawl bar, which triggers are adapted, when released, to move into the path of said depressor bar, a springactuated detent slide associated with each trigger and normally engaging the same to hold it out of the path of the depressor bar, a pawl carried by each detent slide, a plurality of key levers and devices which are severally moved by said keys and which severally engage said pawls to move the detent slides in the trigger releasing direction.

4.. In a perforating machine, the combination of a plurality of vertically movable punch bars, a vertically movable horizontal depressor bar, a spring actuated trigger carried by each punch bar, detent devices which severally engage said triggers andhold them out of the path of the depressor bar, keys and means by which they severally withdraw said detent devices, a feed roll having a ratchet wheel fixed to it, a rocking frame carrying a pawl for engagement with said ratchet, and means whereby said frame will be rocked whenever a punch bar is moved down by the depressor bar. rocking lever 23 so that the pawl 24 by its 5. In a perforating machine, the combinaair foo

tion of a plurality of vertically movable which as any punch bar descends will on punch bars, a vertically movable horizontal gage said bar and rock said frame, and a depressor bar, a spring actuated trigger carpawl carried by said frame for engagement ried by each punch bar, detent devices which with said ratchet. severally engage said triggers and hold them In testimony whereof, I hereunto afiix my out of the path of the depressor bar, keys, signature in the presence of two witnesses.

and means by which they severally withdraw said detent devices, a feed roll having a THOMAS MCCALL' ratchet wheel fixed to it, a spring actuated rocking frame having a transverse bar,the several punch bars having each a shoulder Witnesses SAMUEL AssUR, H. N. RUPPERT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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