US1670832A - Drier driving means - Google Patents

Description

May 22, 1928'.

J. W. VEDDER DRIER DRIVINGMEANS Filed Jan 15, 1928 2 Sheets-Sheet 1 fw /M May 22, 1928. 1,670,832 J. w. VEDDER DRIER DRIVING MEANS Filed Jan.- 13, 1928 2 Sheeis-Sheet 2 w w a kg i i W 1 flllll NI 0 l o 0 v I R J Q F I a N x R3 R N1 a A N Q u n a" "II II k 1 I I Q & 3 Q Fr l N 17266720; I N r g Jaw/572022113 071 to provide a gear the attendants to get at v l Patented May 22, 1928.

UNITED STATES PATENT oFFicE.

JOHN WARREN VEDDER,

TON & FALES, INCORPORATED, 015' MASSACHUSETTS.

. DRIER DRIVING MEANS.

or WORCESTER, mAssAonUsE'rrs, AssIeNoB TO 31cm. 2A3- or wonons'rna, MASSACHUSETTS,

A confounds This invention relates to an arrangement of gearing 1 paper ma mg for driving a drier part of a machine.

The principal objects of the invention are drive which will enable the parts on the driving side for lubrication, also forspearing the paper, will distribute the shafting; and gearing with of gears to be inspection, repairs, etc., an strain on the gears an casing for the to provide a in parts the cover made up and permit a. section removed without dismantling a large part of the machine.

Other objec vent-ion will a Reference is to ing drawings,

Fig.

ts and advantages of the inppear hereinafter.

be had to the accompanyin. which 1 is a side View of a drier part constructed in accordance with this invention showin only a portion thereof near the from the drivset of cylinders;

.::Fig 2 i a view of one of the sections of gears ing one moved taken out;

on the same scale as Fig. 1, showof the plates of the gear casing reto illustrate how the gears can Fig. 3 is a sectional view on the line 33 'of Fig. 1;

Fig. 4 is a sectional view on the line 4-4 of Fig. 1;

Fig. 5 is a sections of the casing for Fig. 6 is a showing how plan of a joint between two the gearing, and side view atthe same point the casing is cut out to permit the gears to be removed.

I have shown the invention as applied to a drier part adapted to receive the we of paper and low comprising a series of steam heated cylinders 10 located in two sets above and below. It has been customary heretofore to place these cylinders in such relathat a gear canbe mounted on the end of each and said gears 'mesh of the web.

other in accordance with By this I mean that each the first cylinder shaft at the left in Fig. 1

will have a gear upon it meshing with a gear on the cylinder shaft below and to the right of it, and the latter will have a gear meshing with the gear on the next cylinder above and to the rig ht of it, and so on throughout the series. In this way, although the gear ratios were kept correct and a. comparatively small number of gears was required, the

back-lash wastransmitted all the way across the machine directly from one cylinder to the next, thus causin trouble in some cases, and the strain on t e gearin was unbal anced as the power was applie to a gear in the bottom section at a point near thebottom and transmitted from that gear at-another point near the top.

In the ordinary construction the gears, which are on the rear ends of the drier journals or trunnions which carry the drying cylinders, are of larger size than the cylinders themselves in order to make the web travel at desired uniform eed. These are located on the rear side an it is practically impossible to get in behind them to oil the bearingsflto perform any slight repairs,

keep the parts clean, or to spear the paper. One of the objects of this invention is to provide a form of gearing for driving the located I have provided gears 16 meshing) with the gears l t. The gears'14 and 16 thus alternate with each other and they are all of the same size on the form shown. They transmit power to the cylinders in the same direction as heretofore, but the transmission of the power to the cylinders along toward the end of the machine at the bottom may be said to be independent of the transmission of the power to the corresponding cylinders at the top. This makes more gearing, but none of the gears have to be so large and it will be seen that each gear receives power on one side of its shaft and transmits power from a diametrically opposite point around the circumference. The small gears do not prevent accessto the bearings for lubrication and repairs.

Having described the gearing I will now describe the frame of the machine. There drier cylinders which will be of sucha nashafts V is of course the usual frame 20 of the drier which supports the cylinders in the usual way. On the floor of the room, or on a suitable solid support, is carried a casing 21 for the gearing. Above-the casing 21 is a casing 23 for the upper gears, and this is connected with the frame by bearings 22 which surround each one of the shafts l2 and extend inwardly to the frame 20.

This latter casing is supported fronmthe frame by posts 24 arranged at intervals. The casings 21 and 23. are provided with front platesor covers 25 which are of different sizes. as will appear, but they are all rectangular in shape, and certain of them are constructed so as to encompass the length of three gears 14; and 16. The line of division between two of these cover plates 25 has to come at the pitch line of the intermeshing gears. Therefore, the teeth of the gears project half way beyond this line in each case, and-when the cover is removed two of the end gears could not be lifted out conveniently to say the least.

For this purpose the covers 25 are cut away to provide notches 26. These notches register with eachother. and form a rec:-

tan ular opening which is covered by a plate "27 olted to the edges of these notches as appears in Fig. 6 especially. Now when one of the covers 25 is removed and the two plates 2'2' adjacent thereto, which can be taken ofi' with it, a set of three gears 1s always exposed in such a way that all three of them can be taken out very readily as 18 clearly indicated in Fig. 2. g

It may be stated that the shaft 11 shown in Fig. 1, is the power shaft to which power is delivered from a'motor or line of shafting, and this transmits power directly through the lowarset of gears 14: and 16. It

7 isalso provided with a pulley 28 or sprocket wheel driving a belt or chain 29 which, through a similar pulley or wheel 30, drives the shaft 12, which in this case. happens to be one of the shafts on which one of the cylinders 10 is mounted. This shaft 12 becomes the driving shaft for the upper series of gears and cylinders and transmits itspower 'to them directly without any special infiuence from the train of gearing in the lower set. in this way the strain on the g gears is equalized, the loss of surface travel .due to back-lash is also equalized .in the upper and lower sets and the gears are easily removed. These advantages can be secured without changing the spacing apart of the cylinders. r

The elements 28, 29 and 30 are housed in a casing carridd' bythe casings 21 and 23 and made up of several'parts 31, 33 and 34.

There are two of the latter and they con- 1. In a paper drying machine, the comhination with a series of drying cylinders over which the web is adapted to pass, a shaft midwa --between each two adjacent cylinder shafts, a series of gears on said shafts,. meshing with each other in a train along the machine, and a gear casing covering the said gears and a plurality of covers divided along lines tangent to the pitch lines of the gears, said covers being notched at said pitch lines to permit the removalof the gears by straight movement along their shafts, and acover plate covering the two notches of two ad'acent covers.

2. In a paper rying machine, the combination with a series of steam heated drying cylinders over which the web is adapted to pass, said cylinders being arranged on that-modifications may be i shafts in horizontal alignment, a shaft midon said shafts meshing with each other in alignment along the machine, and a gear casing covering the said gears and having a plurality of removable covers, said covers being divided along lines tangent to the pitch lines of the gears, and certain of said coversbeing notched at said pitch lines to permit the removal of the gears, two adjacent covers supporting a cover plate covering the notches.

3. In a paper drier, the. combination with a train of gears arranged horizontally for operating the drier, with a casing extending along the .train of gears and supported at the bottom, a second train of gears directly above the first train, a casing for the second set ;o f gears surrounding them, and posts supported by the first casing and bearing the weight of the second casing.

In testimony whereof I have hereunto affixed my signature.

JOHN WARREN VEDDER.

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