US1530003A - Journal or winder shaft for paper machines - Google Patents

Description

March 1-7, 1925.

' B. LARSON JOURNAL O R WINDER SHAFT FOR PAPER MACHINES Filed Aug. 1.6, 1924 {Patented Mar. 17, 1925.

PATENT OFFICE.

BENNETT LARSON, 0F BHINELANDER, WISCONSIN.

JOURNAL OR WINDER SHAFT FOB PAPER MACHINES.

To all whom it may concern:

Be it known that I, BENNETT LARSON, a citizen of the United States, residing at Rhinelander, in the county of Oneida and State of Wisconsin, haveinvented certain new and useful Improvements in Journal or llVinder Shafts for Paper Machines, of which the following is a specification, reference being had to the accompanying'drawings. t

This invention relates to improvements in journal or winder shafts for use in the formation of paper rolls, and more par ticularly to that type of winder shaft shown in my prior Patent #l,033,4@28. In this patent I have disclosed a shaft, and more particularly a winder shaft, formed in two substantially semicircular segments connected by hinge blocks about which the sections may be moved toward or away from one another to increase or decrease the effective size of theshaft, so that the shaft may be used for winding the roll and collapsed to be withdrawn from the formed roll, thus eliminating the jamming of the roll and the necessity of splitting the same which ordinarily occurs at intervals when a solid shaft is employed. 7 Y

:Apartieular object of the invention is to provide means positively limiting the movement of the shaft sections when the same are at their maximum diameter. In the constructionabove referred to the sections of the shaft are shifted longitudinally of one another by means of a spring and will occasionally, through the influence ofsaid spring, move so rapidly from an open to a closed position as to cause injury to the hands of the operator. This positive stop is for the purpose. of limiting movement of the sections under influence of said spring to the point at which they are spaced apart the greatest possible distance, thus insuring 7 that normally the shaft will be maintained at the proper size for use and thus eliminat ing the danger of such aceidents.

A further object of the invention is to provide a modification of this structure permitting use of the same as a journal shaft, the ends of the sections being provided with trunnions for operating in the j ournals.

These and other objectsI attain by the construction shown in the accompanying drawings, wherein for the. purpose of illus per roll.

Application filed August 16, 1924. Serial No. 732,535.

tration is shown a preferred embodiment of myginvention and wherein s a L lgure 1 1s a perspective VIEW' of a joun nal shaft for paper machines constructed in accordance with my invention;

Figure 2 is a longitudinal sectional view therethrough;

Figure 3 is a section Figure 2;

Figure 4: is a fragmentary side elevation, partially broken away, of a winder shaft including the stop blocks;

Figure 5 is a sectional view showing how the sections of the winder or journal shaft are collapsed upon'one another to permit withdrawal of the shaft from a formed paon the line 33 of the segment which they oppose. These spacing blocks maintain the hinge blocks 12 centrally located and also provide afurther support for the pins 13.

In; the present construction the spacing blocks 14' at one end of each section are preferably connected by a solid web 16 and this web is thickened toward the end of the sectionv and integrally connected with the flange 17 of a trunnion 18. These trunnions are located at opposite ends of the sections, the trunnions at one end of the shaft having a flange 17 of a diameter equal to the mean diameter of the shaft when in contracted position, while the trunnion at the oppositeend has a flange equal in diameter to the diameter of the shaft when in expanded position.

Arranged upon the inner surface of each section 10 and 11' is a stop block 19 in the form of an angle plate having one face 20 thereof abutting and conforming to the inner surface of the section to which the stop block is secured by rivets 21. j A second face into expande 22 is fiat and extends transversely of the section and at right angles to the wall of the section. These faces 22 are of, greater length than one-half the diameter of the shaftwhen in fully expanded position and come in contact with one another whenthe shaft is in this fully'expanded position. This contact isassured by means of a spring 23 connecting the sections and under tension at all times. It will be obvious that a shaft of this construction will be held very firmly in its expanded position when the trunnions 18 are placed injournals 24:, which are so spacedthat adjacentfaces of the journals abut the outerlfaces ofthe flanges 17 since relative-movement of the sections at this time will be effectually prevented. Near one end of the shaft, the segments are formed rwith aligned slots 25, through which a lever 26 may be inserted and employedto move the shaft from expanded to contracted position.

It will be obviousthatthe use of the stop blocks 19 may be resorted to in the construction of the winder shaft as shown in"- the patent, and forthe purposes of illustration I have shown such stop blocks as 0111-- ployed with the section of the shaft having the half collars 27 and rings or washers 28, as described in my .prior patent, these half collars combining when the shaft is in fullyfexpanded position to provide a bearing for coaction with the bearing 29 of the paper machine.

Since the device as hereinbefore described is capable of a certain range of change and modification without materially departing from the spirit of my invention, I do not limit myself to such specific'structure except as hereinafter claimed.

" I claim -1. The combination in a shaft of the type described of two substantially semicircular segments, pivotal connections. between the sections permitting the movement of the sections into engagement with one another or into expanded positions where the sections are separated and constitute nearly a complete circle, a stop block secured to the inner surface of each section having a face extending transversely of the section and of a'width greater than the radius of the complete circle formed by said segments, said faces being, opposed and engaging one with the other when the segments are .in expanded relation, and yieldable means connecting the segments urging said faces into engagement.

2. The combination in a shaft of the type described of two substantially semicircular segments, pivotal connections between the sections permitting the movement ofthe sections into engagement with one another or positions where the sections plete circle, a stop block secured to the lnner surface of each section having a face extending transversely ofthe section and of facesbeing opposed and engaging one with the other when the segments are in expanded relation, yieldable means connecting the segments urging said faces into engagement, and bearings for said shaft in which the shaft is engageable when the sections thereof are in expanded position and unengageablewhen the sections are in contracted or partially contracted position.

,3. The combination in a journal shaft of two substantially semicircular segments, pivotal connections between the sections permitting movement of the sections into engagement wlth one another or into eX- panded positions where'the sections are separated and constitute nearly a complete circle, a trunnion secured to each section, the trunnions being secured to the sections at opposite ends thereof and each having a flange, the flange of one of said sections being of a diameter equal to the diameter of the sections when in expanded relation and the diameter of the other of the flanges being the same as or less than the mean diameter of the sections when in collapsed relation, and means normally holding said sections in position with the ends thereof in engagement with the first named flange and yieldably resisting movement of the section bearing the last named flange out of such engagement.

4L. The combination in a journal shaft of tWo substantially semicircular segments, pivotal connections between the sections permitting movement of the sections into engagement with one another or into expanded positions where the sections are separated and constitute nearly a complete circle, a trunnion secured to each section, the trunnions'being secured to the sections at opposite ends thereof and each having a flange, the flange of one of said sections being of a diameter equal to the diameter of the sections when in expanded relation and the diameter of the other of the flanges being the same as or less than the mean diameter of the sections when in collapsed relation, means normally holding said sections in position with the ends thereof in engagement with the first named flange and yieldably resisting'movement 0f the section bearing the last named flange out of such engagement, and bearings for said trunnions having their inner faces spaced apart a distance equal to the spacingbetween the outer faces of the flanges when the sections of the shaft are in expanded relation.

5. The combination in a shaft of'the type described of two substantially semicircular are separated and constitute nearly a com-segments, pivotal connections between the sections permitting the movement of the sections into engagement with one another or into expanded positions where the sections are separated and constitute nearly a complete circle, a stop block secured to the inner surface of each section having a face extending transveresly of the section and of a width greater than the radius of the complete circle formed by said segments, said faces being opposed and engaging one with the other when the segments are in expanded relation, yieldable means connecting the segments urging said faces into engagement, and bearings for said shaft in which the shaft is engageable when the sections thereof are in expanded position and unengageable when the sections are in contracted or partially contracted position, the sections of said shaft being each provided at one end with a trunnion for engagement in one of said bearings, said trunnions having flanges engaging adjacent faces of the bearings and fitting closely therebetween when the sections of the shaft are in expanded position to thereby prevent movement of the sections into engagement with one another.

In testimony whereof I hereunto aflix my signature.

BENNETT LARSON.

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