US73070A

US73070A - Thoma-s a

Info

Publication number: US73070A
Authority: US
Publication date: 1868-01-07
Anticipated expiration: 1885-01-07

Description

. @einen .gistenV attnt @ffice IMPROVEMENT IN FRICTION-ROLLERS FOB. BAND-SAWS.

dige .rlgehuls metten tu intlgese etten; rztin mit making niet nf tigt im.

TO ALL WHOM IT MAY GONCERN:

Be it known that I, TnoMAs'A. BALLoU, ofCleveland, in the county of Cuyahoga, and State of. Ohio, have invented certain new and useful Improvements in Friction-Rollers forSaws; and- I do hereby declare that the following is a full and complete description of the same, reference being had to the accompanying-drawings; making a part of this specification, in which- Figure l is a front view.

Figure 2 is a side View. l y

Figure 3 is a transverse section in thevdirection of the line :z: fig. 1.

Figure 4 will be referred to` in the description. i

Like letters of reference refer to like parts in the yseveral views. Y

The nature of my improvement relates to the manner of makingfriction-rollers for cylinder-saws, Sto., so as to prevent thenoisc, friction, and indentation of the saw when in operation, which is the case with the vordinary onesnow in usc. This roller A consists of the head Af, which is provided with a shoulder, B, fig. 3. O-n this shoulder, surrounding the head A', is placed raw hide, C, orv itsv equivalent, as'.` shown in figs. 2 and 3, causinghthe Saw to run quieter, truer, and with less friction. On the raw hide, and extending out from the head A as far as the end of the shoulder, is placed the follower. D, which is secured in place by means of theset-screws I, these screws also holding and securing the raw hide in place in .connection with the follower and head. E is the hole for the shaft o f the rolleigirhich, when in place, is held by the set-screw F. The frictionrollers n cw in use, being made of metal, as. they press against the saw while it is revolving, thus creating friction, will soon indent or form a groove' on the interior surface of said saw, and make a rattling, jarring noise" while in operation, and also run 'uneven and irregular. v A series of rollers placed inside of a cylinder-saw, H, is shown in tig. 4, which may be operated in the usual way.

By making the rollers as above described, and Asurrounding the head A with rawhide or its equivalent, much noise and friction are avoided. AAs the saw moves round upon the rollers the indenting is prevented,q as the raw hide will not wear away the saw, as iron. rollers would when used. for that purpose.4 When rollers made with raw hide in this way are used, the saw will run smooth and true, and without so much jarring and ncisc as when metallic ones are used; and they are. much cheaper; and when the raw hide Wears away, it canbe taken i out and new replaced without the expense of a new saw and-rollers, as 1s the case when metallic ones are used.

`What I claim as my improvement, and desire to secure by` Letters Patent, isf- The roller A, consisting of the head A and follower-piece D, and pieces of raw hide C, clamped between the head and follower by means of clamp-screws I, all constructed to opcratelsubstantially as described.

vTHOMAS A. BALLOU.

Witnesses:

J. H. Brummen,v J. M. Brsnor.