US1977070A - Progressive paper machine drive - Google Patents

Description

Oct. 16, 1934. J. A. LIMPERT PROGRESSIVE PAPER MACHINE DRIVE Filed Aug. 19, 1955 5mm SN da l# @W MGD Patented Oct. 16, 1934 UNITED STATES 1.977.070 PROGRESSIVE PAPER MACHINE' DRIVE John A. Limpert, Kimberly, Wis., assignor to Paper Patents Company, Neenah, Wis., a corporation of Wisconsin Application August 19, 1933, Serial No. 685,809

1 Claim.

The invention relates to driving equipment for paper making or converting machinery and has its chief application to those installations which include a plurality of web propelling mechanisms 5 which, from the nature of the installation, re-

quire to be driven at different speeds.

Heretofore, it has been customary to drive each of the web propelling mechanisms direct from one main source of power. That is to say, the mechanisms are all driven in multiple, although the web propelling mechanisms operate in series and successively' upon the paperl web as the latter makes its progress through the complete machine. Under these conditions I have found that in many cases where a preceding web propelling vmechanism has had to have its speed changed for any reason, it is necessary at the same time to make a corresponding adjustment in all of the succeeding web propelling mechanism speed changing regulators. Hence, where there are a considerable number of these independent driving arrangements, it becomes a somewhat formidable undertaking to adjust them all simultaneously to suit some change in the web condition.

For example, let us assume an ordinary Fourdrinier paper machine with one or more wet presses and a drying end composed of say four sections, the speed of which must be adjusted independently of each other in order to suit the particular kind of paper being made, and the particular drying conditions in eiect at the time. If, because of some operating requirement, it is necessary to adjust the speed of the rst drying it is sucient if thespeed of the other drying sections of the machineis adjusted in exact proportion to the relative change made in the speed of the lrst section, and if precisely such change be not made at once, there will be trouble in the later drying sections.

The object of the invention is to provide an arrangement whereby under ordinary circumstances, when it is necessary to make a change in the speed of one of the web driving mechanisms, the making of such change will effect automatically a corresponding vchange in the speed of the succeeding mechanisms.

I have discovered that this simultaneous change in the driving speed of the later sections of a machine of this kind can be conveniently, economically and elciently effected by arranging the driving connections for the various web propelling mechanisms, in cascade instead of in multiple.

section, I have discovered that in nearly all cases I have illustrated the invention as applied to the drying section of a machine for drying and at the same time surface-treating a continuous paper web, such as is described in the patent to Germanson and Kranhmd No. 1,918,095, dated v July 11, 1933.

In the drawing accompanying this description, the figure represents in'diagrammatic form an improved arrangement for driving the web propelling instrumentalities of the' driers and coating presses of said patented machine.

In the said drawing, 1 represents the line shaft or main power shaft or source from which the first horizontal drying section, the rst coating press, the large twelve foot drier, the second coating press, the large ten foot drier and the vertical stack drier, all receive their power. The web is conducted through or over each of the said instrumentalities successively, in the order stated.

Only one of these instrumentalities, namely, the first horizontal drying section, receives its power from the line shaft. This is eiected through a pair of cone pulleys 2 and 3 and the connecting belt 4, so that the counter-shaft 5 which drives the first horizontal drying section through bevel wheels 6 and 7 can be operated at any desired speed, it being understood that the belt, 4 is shiftable on the cone pulleys 2 and 3 by\ a suitable fork or other belt shifting arrangement lwhich is indicated diagrammatically at 8.

The other web propelling instrumentalities are operated from similar counter-shafts 9, 10, 11, 12 land. 13, each driving its own web propelling 90 mechanisms similar to bevel wheels 7. It Will be observed, however, that none of the countershafts 9, 10, 1l, 12 or 13 derive their power direct from the line shaft, but that each shaft in the series receives itspower from the preceding shaft in the series by means of' a pair of cone pulleys and belt similar to the pair of cone pulleys 2 and 3 and the belt 4, previously described. It will be understood that each of the belts which connect the cone pulleys on the successive drive shafts, is equipped with a suitable belt shifting fork or other suitable arrangement so that the relative speeds of the driving and driven shaft in each case may be conveniently adjusted.

It is obvious that with the cascade arrangement as described, when' any change is made in the speed of any section, the speed' of the preceding section will not be` changed in any way. f However, the speed of all succeeding secthe change made in the section which has had its speed adjusted. Hence, for making an adjustment of speed for any reason, it is not necessary to organize and have in readiness at all times-several highly trained operatives for the purpose of effecting a simultaneous manual adjustment in the drives of all of the succeeding sections.

I am aware that changes may be made in the above described construction without departing from the spirit of my invention, the scope of which should be determined by reference to the following claim, the same being construed as broadly as possible consistent with the state of the art.

tions will be changed exactly in accordance with I claim as my invention! A paper making or converting machine having a series of driving units for successively propelling the web as the latter makes its'progress through the machine, each unit in the series being driven by the preceding unit, a main driv respondingly changed.

/ JOHN A. LIMPERT.

Images