US1853292A - Web controlling apparatus - Google Patents

Description

April 12, 1932- H A. w. WOOD 1,853,292

WEB CONTRLLING APPARATUS Original Filed July 14. 1927 2 Sheets-Sheet l April 12, 1932. H. A. w. WOOD 1,853,292

WEB CONTROLLING APPARATUS Original Filed July 14, 1927 2 Sheets-Sheet 2 a r l r 15 jz aw F JZ jj jg iirezfaw 79/21'7J4, 7&127407 Patented Apr. 12,! 1932 UNITED STATES HENRY;A. WISE WOOD, OF NEW YORK, N. Y.,

PATENT oF icE ASSIGNORTO WOOD NEWSPAPER MACHIN- ERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA WEB CONTROLLING,APP ARATUS Application filed July 14, 1927,'Seria1 No. 205,719. Renewed September is, 1931.

This invention relates to'the supply of a printing press with a web of paper.

The principal objects, of the invention are to provide means'for controlling the speed of the Web from'the running roll to the press when the press either stops or slows down;

to provide means" whereby the web, coming directly from the running roll, will run at the proper speed normally without any assistance, and will be slowed down in proportion to the reduced speed of the press when stopping; and to provide mechanism by which the presswill run the web controlling'means only when the press is running at less than full speed and the said web controlling means will be run by the web at all other times.

Other objects and advantages of the invention will appear hereinafter.-

Reference is to be had to the accompanying drawings, in which Fig. l is a side view of part of a printing press, showing a preferred embodiment of this invention; and

Fig. 2 is an end elevation of the same.

In web replenishing devices of a certain type, the web rolls are mounted on a rotary reel in such position that the fresh roll comes around close to the web running from the active roll and the paster is made when the fresh roll and the web are adjacent to each other. In these machines, as. so far designed, the web going to the press is propelled by feed belts which are connected positively with the press and operated at web speed and engage the web onthe surface of the rotating roll. Thus these belts propel this roll and keep the web up to speed in accordance with the speed of the press. I have discovered that the propelling of this roll positively inthis way is unnecessary and in fact adds a complication to this type of machine. This invention relates to a device for holding back the running web roll and the web, under certain circumstances. The actual propelling of this running roll is not accomplished by the mechanism of this invention, except by the pull on the web from the press.

For this purposeI provide the usual rotary reel 10 with the fresh roll, llrshown nearly in pasting position and the running roll 12 in running position. The parts operate in this way until the running rollis reduced down nearly to the stub and then the web and fresh roll 11 are brought together in any desired way, paste having previously been by the press in any way but are perfectly idle and are run by the contact of the belt with the roll 12. These belts are mounted on a frame which rests by gravity in such position as to provide this contact.

The press operates a gear a gear 18 loose on the upper shaft15. Fast on the shaft 15 is a ratchet wheel 19 and on the gear 18 is a spring pawl 20 for engaging the ratchet wheel. I

Itwill be seen that as the press runs, the gear'18 and ratchet pawl are also rotated, but the belt 13 is already rotating at full speed due tocontact with the running roll 12 so it is not operatedby the press. The ratchet wheel19 is'rotating with the shaft 15. If, however, the press slows down, or stops suddenly, the ratchet wheel 19 will'be prevented by the pawl from having a faster motion than the gear 18. This prevents the pulley, and

therefore the belt 13, from running away. s

son with the press. Thus the belt is not a propeller belt, but a braking belt. It never speeds 17 meshing-with down, the ratchet simply acts to hold the belt atthe speed of deceleration of the press and slows the paper roll 12 down to rotate in uniup and never can speed up the roll 12 or the web. It can act only to slow them down. I

have spoken in the singular but it is usual to provide two or more of these belts 13 across the web.

Although .I have illustrated and described only one form of the invention, .Iam aware of the fact that modifications can be made therein by any erson skilled in the art without departing rom the scope o'fthe invention as-expressed inthe claims. Therefore, I do not wish to be limited to all the details of construction herein shown and described, but what I do claim .is 1: 1. In a web controlling device for a printing ,press, the combination with means for supporting a running roll and means for guiding the web therefrom to a printing press, of movable braking means for constantly engaging the surface of the running roll, said brakinglneans being normally disconnected from the press and connections from said means to the press for preventing I the running roll from rotating any faster at its circumference than the speed of'the press.

2. In a web controlling device for aprinting press, the combination with means for supporting a running roll and -means for guiding the web therefrom to a printing press, ofa braking member in contact with -'the' 'surfa'ce of the running .roll, and adapted :tobe ,propelled'solely by-said roll, and connections :from :the press for preventing the running roll from rotating any faster'at its 0 cincumferencethan the speed of the web in the press when :the press slows down from normal sspeed.

, --Ina webcontrollingdevicefor aprinting press, the combination .with-arunning web and a belt .in contact :with the surface thereof, of means for supporting the belt to run freely and "idly :under normal :condilt-ions, and means connected with the press tor-slowing said'belt down in proportion to is any neducedzor decelerated speed :of the-press .atall times. 7

4. In a web controlling devicefor arprrintsing press, thecombinationv of a series :of Tbelts arranged to contact by gravity with a run- I ning web roll,=of a shaft, pulleys 'on the'shait :forsupporti-ng the belts at one end, whereby the belts willberoperated by the running roll,

avratchet wheel fixed on said :shaft, a :gear

loose on the shaft, means for rotating the .gear from the press, and apawl; on the gear engaging the ratchet wheel andpreventing the rotation of the, pulley at 'aspeed greater thanthat of the ratchet wheel.

5. In a web controlling device-for :a print- :ing'press, the combination with a running *weband retarding or brakingmeans in con- Ftact therewith, of :means for supportingssaid retarding means to run freely and idlyunder normal conditions, and means connected *with'the press for: slowing down said iretard- Iii ing means in proportion to any reduced or decelerated speed of the press at all times.

6. In a web controlling device for a printing press, the combination of a belt arranged to contact by gravity with a running web roll, of ashaft, a pulley on the shaftfor su porting the belt at one end, wherebythebe t will be operated by the running roll, a ratchet fixed on said shaft, a gear loose on the shaft,

means for rotating the gear *from the press, and a pawl on the gear-'engagingthe ratchet wheel and preventing the rotation of the pulleyat a speed greater than that of the ratchet wheel. I

'7. In a web controlling device for a printing press, thecombination with means for supporting a .running web roll, of means for pivotally supporting abelt, thepivomd point being so located as to allow the belttocontact with the surface'of the running rollb the action of, gravity when the running rol is in running web feeding position, whereby the belt will .be moved by therrunningofthe roll and its web, and means for preventing the belt from running at all times at a speed greater than that of the web.

In testimony whereof I havehereuntoaffixed my signature.

HENRY A. WISE WOOD.

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