US1940669A - Apparatus for numbering paper sheets - Google Patents

Description

Dec. 26, A W E$ APPARATUS FOR NUMBERING PAPER SHEETS Filed Dec. 2, 1932 2 Sheets-Sheet l flrl'fiur W Earries Dec. 26, 1933. A. w. HARRIES APPARATUS FOR NUMBERING PAPER SHEETS Filed Dec. 2, 1932 2 Sheets-Sheet 2 A TTORNEVSI Patented Dec. 26, 1933 AI PARATUS FOR NUMEERING PAPER SHEETS J Arth ur WilliamHaiiries, 'ljwickenliann England Application December 2, 1932, Serial No. 645,490, #1

i and in Great Britain February 1, 1932} 3 Claims.

In connection with machines for printing commercial forms, invoices, manifold sheets and the,

like it is a common. practice to mount on the machine numbering mechanism which imprints successive numbers on the sheets as they are fed when desired so that during 'the travel of any predetermined number of sheets the numbering mechanism will not function.

In order that the nature of the improvements may be clearly understood I have illustrated the same. in the accompanying drawings applied by way of example to a rotary printing machine similar reference characters relating to like parts in all the figures.

Figure 1 is a general view of the machine showing the main parts affected by the invention.

Figure 2 is an elevational view of apparatus according to this invention drawn to a larger scale and Figure 3 is a plan thereof.

Figure 4 is a sectional elevation on'the line AB Figure 3 drawn to a still larger scale.

Referring first to Figure 1, the impression cylinder is shown at 0, being driven through the intermediate shaft d by the motor I, and the main shaft of the numbering mechanism at e. The apparatus for carrying out this'invention is shown but more particularly and to a larger scale in Figures 2, 3 and 4. and referring now to these figures it will be seen that in proximity to the num- 4 bering mechanism, but on the opposite side of the printing machine to that on which the operating means therefor is mounted, ratchet wheels 9 and h disposed side by side, are loosely mounted on a shaft 70, the space m between'two of the 5 teeth of the wheel g, being deeper than the spaces n between the other teeth of both the wheels 9/ and h.

Carried on an arm 0 loosely mounted on the shaft is and driven by the eccentric p on the impression cylinder shaft q and the connecting rod r so as to rotate the ratchet wheels 5/ and h is a double-nosed pawl s. It will be clear that when the longer nose t of the pawl s engages the recesses n of the wheel g this wheel will be, rotated idly on the shaft is. When however the longer nose t enters the deep recess m of the wheel g the short nose u of the'pawl will engage the recess 12 of the wheel h and this wheel will also consequently be rotated and thereby rotate the sprocket pinion 0 connected to or integral with it.

An endless chain w passing around the pinion v and hanging down freely is formed of a number of links a: corresponding to a multiple of the number of sheets to be numbered and formed into a pad, and an additional link 11 that carries a pin 2 which in the course of the travel of the chain it strikes and thereby trips the detent 2 pivotally mounted on the pin 3. I

The detent 2 engages the end of a lever 4 mounted on the shaft 5 that extends transversely of, the machine and carries at its other end a lever 6 with a roller '7 on its extremity that normally contacts with the roller 8 that is carried by the bar 9 connected by the pin 10 to a corresponding bar 11 carrying a pin 12 that normally bears against the step 13 in the cam 14 on the shaft 6 to drive the numbering mechanism. The cam 15 p 15 will raise the bar 9 thus also raising thebar 11 so that the pin l2 misses the step 13 in the numbering cam 14 and the numbering mechanism is therefore thrown out of operation and remains idle until the travel of link y and pin 2 beyond the detent 2 allows this member to return to its normal position into engagement with the lever 4 and the lever 6 is swung back to its former position so that the numbering cam is operated and the numbering of the sheets proceeds in the usual manner.

What I claim is: s p 1. In combination, an impression device, a numbering mechanism, a sprocket wheel operated by said impression device, an endless chain driven by said sprocket wheel and having a number of links corresponding to the number of sheets to be numbered and having an additional link, a 7 pin carried by said additional link, and a trip mechanism operated by said pin for throwing said numbering mechanism out of action.

2. An apparatus for periodically throwing a numbering mechanism out of operation comprising a driven sprocket wheel, an endless chain 'nism ceases to operate.

her of links corresponding to the number of sheets to be numbered and having an additional link, a pin carried by said additional link, a pivoted detent in the path of travel of said pin, a lever engaged by said detent and rocked thereby when the pin moves said detent, a shaft to which said lever is fixed, a second lever fixedto said shaft, a 'cam adapted to operate said numbering mechanism and having a step thereon, a pin normally engaging said step, a rotating lever system carrying said pin and into the path of travel of which the free end of said second lever is adapted to be disposed when the first lever is rocked whereby the pin is moved out of engagement with the cam and the numbering mecha-' 3. In combination, an impression device, a.

driven by said sprocket wheel and having a numnumbering mechanism, a pair of ratchet wheels disposed side by side, the space between two of the teeth of one ratchet wheel being deeper than the spaces between the other teeth of both ratchet Wheels, a pawl having a long nose cooperating ing to the number of sheets to be numbered andv having an additional link, a pin carried by said additional link, and a trip mechanism operated by said pin for throwing said numbering mechanism out of action.

ARTHUR WILLIAM HARRIES.

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