US1798821A - Paper-manufacturing machine with raising felt - Google Patents

Description

March 31, 1931. E. M. VEYRON 1,793,321

PAPER "ANUFACTURING MACHINE WITH RAISING FELT Filed on. 26, 1929 9 Sheets-Sheet 1 March .31, 1931. VEYRON 1,798,821

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March 31, 1931. E. M. VEYRON PAPER MANUFACTURING MACHINE WITH RAISING FELT Filed Oct. 26, 1929 9 Sheets-Sheet 4 March 31, 1931. VEYRON 1,798,821

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PAPER IANUFAQTURING MACHINE WITH RAISING FELT Filed Oct. 26, 1929 9 Sheets-Sheet e Fig.9 16

March 31, 1931. VEY-RON 1,798,821

PAPER IANUFAGTURING MACHINE WITH RAISING FELT Filed Oct. 26, 1929 S'Sheets-Sheet 7 March 31, 1931. VEYRQN 1,798,821

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March 31, 1931. E. M. VEYRON 1,798,821

PAPER IANUFACTURING MACHINE WITH RAISING FELT Filed Oct. 26, 1929 9 Sheets-Sheet 9 [(4. 74 0. m x-I a; row

f v f Patented Mar. 31, 1931 UNITED STATES PATENT OFFICE EUGENE MARIUS 'VEYRON, OF LYON, FRANCE, ASSIGNOR T PAPETERIES NAVARRE, 0F LYON, FRANCE, A CORPORATION OF FRANCE PAPER-MANUFACTURING MACHINE WITH RAISING FELT Application filed October 26, 1929, Serial No. 402,728, and in France October 31, 1928.

T his invention has for its object improve- Figure is a cross sectional View taken on ments to machines for the manufacture of line 55 of Figure 3. paper in which the raising is performed au- Figure 6 is a cross sectional view taken an tomatically by means of a raising felt. line 66 of Figure 3.

5 The objects of the said improvements are Figure 7 is a top plan view corresponding 1. To provide for the automatic raising of to Figure 3. the sheet whatever the cleanliness and per- Figure 8 is a cross sectional view taken on meability of the raising felt may be; line 8-8 of Figure 9 and showing the oil 2. To absolutely avoid the production of damper device.

to mashings on the sheet being raised on ac- Figure 9 is a cross sectional view taken on count of the possibility of considerably reline 99 of Figure 8. v ducing the contact pressure between the felt Figure 10 is a cross sectlonal view taken on and the cloth roller without impairing the line 10-10 of Figure 8 and showing a tightreliability of the raising of the sheet; ening partition.

1e 3. To provide for a longer life of the rais- Figure 11 is a detail view of the oil make- (:5

ing felt by equal output, as a result ofthe up valve. voids in the felt being kept open by the suc- Figure 12 is a cross sectional view taken tion effect; on line 1212 of Figure 8.

4. To increase the dehydration capacity Figure 13 is a further sectional View taken 20 of the wet part without increasing the strain on line 13+-13 of Figure 8.

on the cloth; Figures 14 and 15 are detail views.

w 6. To improve the quality as a result of Figure 16.

5. To provide for an increased linear speed Figure 16 is a cross sectional view 'of a without danger of wrmklmg or tearing olf trimmmgpick-up cylmder and its frame. the sheet when being raised; Figure 17 1s a side View correspondmg to the dehydration of the pulp on both sides of Figures 18 to 21 relate to the. disengaging the sheet. device for the trimming pick-up cylinders.

Generally stated, the invention is charac- In order to permit the mounting of suction terized in that the raising press of the ordicylinder 1 upon adjustable rocking levers it ill? nary machines is replaced by a suction cylinis provided at both ends thereof with a supder mounted. upon a rocking lever device alporting arm 2 to which the related bearing lowing an accurate adjustment of the desired of the said cylinder is secured. The arm comcontact pressure between the felt and the prises two hinges, viz., hinge 3 on upright 4 V cloth, the rocking levers being fitted with and inge 5 between the S id arm and t e an oil damper comprising a system for comlever 6 of the scale. Astay 7h1ngedly secured pcnsating any oil loss. at 8 and resting on a boss 9 serving as a guide Another characteristic resides in the profor the same, maintains the cylinder 1 in vision of trimming pick-up cylinders proraised position when the cloth and felt are vided with a setting and disengaging device to be renewed. For this purpose the arm 2 is the details of which are to be dealt with loosened from the end 5 of the scale simply go hereinafter. by manual pulling out of the grip pin 10. Figure 1 is a general view showing the ar- The suction cylinder 1 has its inner sucrangement of the suction cylinder. tion chest connected as usual through hoses Figure 2 is a top plan view corresponding 11 to the vacuum station 12 by means of the to Figure 1. transverse general manifold 13. Figure 3 is a cross sectional view showing Each rocking lever device comprises a lever the construction of one rocking lever. 6 hingedly secured at 5 to the rocking sup- Figure e is a cross sectional view taken on porting arm as described above. the point 14 i 3 u 3 I y n to line le-4t of F igure 0. bearing upon a knife-edge 15. The sald lever loo 6 is hingedly secured at 16 to a twin rod 17 by which it is connected to the damper 18.

A counterpoise 19 adapted to be shifted by means of a screw or otherwise allows the pressure between the suction cylinder 1 and the cloth roller20 to be adjusted.

A stop 21 secured upon the rocking lever carrying upright 22 and fitted in the recess 23 in the lever, prevents the swinging of the knife-edge 15 and provides for the accurate co-incidence of the hinge holes at 5, so that the pin 10 may be driven in and out easily.

The damper or moderator 18 is of the oscillating piston type. The oscillating piston 25 is provided with a pair of valves 24 for the purpose of allowing the filling of the chamhers 26 formed by the piston walls on either side of the joint block 27. The filling of both chambers is thus efi'ected simply by swinging the piston by hand. Moreover, these valves provide for the automatic makeup of any oil loss by drawing from the oil supply-28 arranged at the top portion of the damper casing, the small working displacements of the piston being suflicient for the purpose.

The object of the damper is to wholly eliminate the vibrations and oscillations of the suction cylinder which would infallibly result in the production of mashed or wrinkled sheets by reason of variations in the contact pressure.

The trimming pick-up cylinders are shown at 29 in Figures 16 and 17. They consist of a cylinder lined with flexible india rubber and a frame 30 carrying the hinged trimming scrape-off blade-31. The cylinder is mounted in ball bearings arranged in the frame which is adapted to be shifted along a cross bar 31 parallel to the suction cylinder and hingedly mounted in the pair of supporting arms and projecting through two hubs thereon.

This arrangement allows the adjustment of the pick-up cylinders according to the size and also permits the disengagement of the cylinders as desired. The disengaging device comprises a stop 33 secured to the cross-bar carrying the pick-up cylinders and actuated from the operators side by means of a cam provided with an operating handle.

It is to be understood that'the embodiment just described is b no ways of limitative character and len s itself to all desirable modifications without thereby departing from the scope of the invention as set forth in the appended claims.

Claims:

1. In machines for the manufacture of paper where the raising is performed automatically by means of a raising felt, the improvement consisting in the provision of a suction cylinder operating as a sheet raising device, the said suction cylinder being mounted upon adjustable rocking arms the oscillations of which are damped in order to avoid the mashing or wrinkling of the sheet.

2. In machines for the manufacture of paper according to claim 1, the provision of an adjustable trimming pick-up cylinder device combined with a disengaging device allowing the said pick-up cylinders to be made inoperative when necessary.

In testimony whereof, I aflix my signature.

EUGENE MARIUS VEYRON.

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