US834472A - Automatic take-up. - Google Patents

Description

' PATENTED OCT. 30, 1 906.-

I -J. PLHAS S.

AUTOMATIC TAKE-UR; APPLICATION FILED 817F112, 1905.

- Inventor.

Witne ses Attorneys 1w: NORRIS PITEIS c0., wnsumai'an, n. c.

JOHN PAUL HASS, OF GORHAM, NEW HAMPSHIRE.

AUTOMATIC TAKE-UP.

Specification of Letters Patent.

Patented Oct. 30, 1906.

Application filed September 12, 1905. Serial No. 278,164-

of the class embodying new and improved.

features of utility, accuracy, simplicity, and efficiency.

A further object of the invention is to provide a device embodying improved means for automatically taking up and compensating {gig changes in length of endless belts and the A further object of the invention is to provide a device for association with a paperthe felt of a paper-making machine.

making machine and embodying means for automatically compensating for changes in the length of the felt and to maintain the felt at all times in a level position and accurately straight. I v

. With these and other objects in view the present invention consists in the combination and arrangement of parts, as will be here inafter fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims.

In the drawings, Figure 1 is a top plan view of the improved take-up associated with 1g. 2 is a longitudinal sectional view of a portion of the frame of a conventional paper-making machine with the take-up applied and taken on line 2 2 of Fig. 1.. Fig. 3 is a transverse sectional view taken on line 3 3 of Fig. 2 and showing one of the bearing-blocks in elevation.

Like characters of reference indicate corresponding parts in all of the figures of the drawings.

The automatic take-up forming the subj cot-matter of this application is adapted for use in association with any form of endless belt, rope-drive, or endless apron. The invention is especially, although not exclusively, adapted for use in connection with the felt of a paper-making machine and is here illustrated in connection with a conventionalized paper-making machine, havingthe base 10, upper frame-pieces 11, and felt 12. Upon the frame in any convenient positions are erected the uprights 13, with their upper ends bifurcated to form the cars 14.

In the ears 14 are journaled the shafts 1.5 and 16, extending transversely of the machine and parallel with each other. Upon the shafts15 and 16 are mounted the sprockets 17 and 18, over alined pairs of which pass the chains 19 and 20. The sprockets 18 must be rigid upon the shaft 16, and the sprockets 17 may be either rigid or loose upon the shaft 15.

Between the uprights 13 are secured the guides 21 21 and 22 22 extending longitudinally of the machine, and thereon are slidably mounted the bearing- blocks 23 and 24. Between and in the bearing- blocks 23 and 24 is j ournaled the roller 25, over which passes the felt 12. The ends of the chains 19 and 20 are secured, respectively, to the bearing-blocks, 23 and 24, as by the eyes 26 and 27, so that the blocks 23 and 24 and the opposite ends of the roller 25 move simultaneously and in unison.

Upon the end of the shaft 16 is mounted the drum 28, about which is mounted the cable 29, from which is suspended the vari able weight 30.

The drum 28 is rotatable upon the shaft 16, being heldfrom displacement in any approved manner, as by the pin .31, and is provided with one or more spring-pressed pawls 32, engaging a ratchet-wheel 33, rigidly mounted upon the shaft.

It will be obvious that the weight 30 tends to move the sprockets 17 and 18 in the direction indicated by the arrow, which tend to move the chain and bearing-blocks as indicated, thereby holding the felttaut at all times, but compensating for any variation in its length.

It will also be obvious that as the belt or felt 12 becomes permanently lengthened the cable may be wound upon the drum by rotating the drum relative to the shaft 16 and about the ratchet-wheel 33.

It will be noted that the belt 12 remains constantly in the same plane throughout its adjustment.

Having thus described the invention, what is claimed is 1. A take-up device comprising a frame, guides mounted upon the frame, bearingblocks slidably mounted upon the guides and movable longitudinally of the frame, shaft s mounted transversely of the frame, sprockets mounted upon the shafts, chains passing over the sprockets and with their ends secured to the blocks, a roller journaled in the blocks, a

belt passing thereover, a drum mounted upon one of the shafts, a cable Wound about the drum, a Weight attached to the cable and tending to move the blocks longitudinally of the guides and to hold the belt taut.

2. The combination in a paper-machine of spaced uprights, guides mounted between the uprights and longitudinally of the ma chine, parallel shafts journaled in the uprights and extending transversely of the machine, alined sprockets mounted adjacent the ends of the shafts and above the guides, bearing-blocks slidablyrmounted upon the guides and movable longitudinally of the machine, a roller journaled in the blocks and extending transversely of the machine, an endless felt passing over the roller, chains passing over the sprockets and With their ends secured to the blocks and whereby the blocks Will move simultaneously and equally, a drum mounted upon one shaft, a cable Wound about the drum and a Weight suspended upon the cable and arranged to move the blocks to hold the felt taut.

3. A take-up device comprising a frame, guides mounted thereon, bearings slidably mounted upon the guides and movable longitudinally of the frame, a roller carried by the bearings, flexible devices extending above the bearings and each connected at its ends to opposite faces of one of the bearings, a

drum movable With said flexible devices, a

belt extending over the roller, and means for automatically rotating the drum to move the flexible devices and bearings to hold the belt taut.

In testimony that I claim the foregoing as my oWn I have hereto aflixed my signature in the presence of two Witnesses.

JOHN PAUL I-IASS.

Witnesses:

J. H. WOODWARD, CHARLES B. GIFFORD.

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