US596232A

US596232A - Frederick e

Info

Publication number: US596232A
Authority: US
Publication date: 1897-12-28
Anticipated expiration: 1914-12-28

Description

(Nb Model.) I FFE. SOHMITT.

ROLLER FRAME ADJUSTMENT FOR SANDERS.

Patented Dec. 28,1897.

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UNITED STATES PATENT Curios.

FREDERICK E. SCHMITT, OF GREEN BAY, WISCONSIN, ASSIGNOR TO THE MILWAUKEE SANDER MANUFACTURING COMPANY, OF SAME PLACE.

ROLLER-FRAME ADJUSTMENT FOR SANDERS.

SPECIFICATION forming part of Letters Patent N0. 596,232, dated December 28, 1897.

Application filed July 6,1897. Serial No. 643,550; (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK E. SOHMITT, of Green Bay, in the county of Brown and State of Wisconsin,have invented certain new and useful Improvements in Roller-Frame Adjustments for Sanders; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, and

to the letters of reference marked thereon,

. pointed out in the claims.

In the accompanying drawings like letters designate the same parts in both figures.

Figure 1 is a vertical longitudinal section of a portion of a sanding-machine to which my improvement is applied, the plane of the section being indicated by the line 1 1, Fig. 2 and Fig. 2 is a horizontal section in the plane indicated by the line 2 2, Fig. 1.

A designates a portion of the main frame, 13 the bed, C one of the polishing drums or cylinders, D D lower feed-rollers, E the upper roller-frame, F F upper feed-rollers, and G an upper resser-roller opposite the polishing-cylinder, all of the usual or any suit able construction and arrangement in or for this class of machines.

The roller-frame E is supported at the corners by vertical screws H, which are threaded therein and have bearings at their upper and lower ends in corner-posts I, mounted on the main frame or bed of the machine. The. several adjusting screws carrying the rollerframe are connected in the usual way by shafts J and interrneshing bevel-gears h and j, as partially shown in Fig. 1, so as to simultaneously raise and lower said frame equally at its four corners.

It is well known that in machines of this kind the polishingcylinders must be constructed and adjusted with great accuracy, and the bearings of the cylinders and feedrollers must also be accurately adjusted and firmly supported without play in order to produce satisfactory work. In machines having the upper feed-rollers carried by a frame which is adj ustably supported by vertical screws threaded therein, as shown in the.

drawings, the backlash or play of the screws in the roller-frame allows it to tip more or less forward or backward. This movement of the frame, occurring particularly when the material enters and leaves the machine, causes the polishing-cylinders to gouge into the work and thus produce wavy and imperfect surfaces. To cure this defect is the purpose of my improvement, which consists of a device for preventing the backlash or for taking up the play of the adj listing-screws in the'rollerframe.

I Upon each of the screws H, below the rollerframe or that part of the frame with which it engages, is a nut or threaded sleeve K, as shown in Fig. 1. Each of these sleeves is formed at its upper end with a cup-shaped spring-seat k and at its lower end with a notched rim or flange k. A heavy spiral spring L is interposed between the frame and each nut or sleeve, as shown in Fig. 1. These springs are made of sufficient strength to sustain the weight of the roller-frame and the mechanism which it carries.

M are dogs or detents forholding the sleeves K,when properly adj usted, from turning upon the screws H. They may be attached to the roller-frame, as shown in the drawings, so as to be readily disengaged from and engaged with any of the notches in the flanges k of the sleeves K. As shown in the drawings, they are longitudinally slotted and secured by bolts m in recesses formed in the under side of the roller-frame. By loosening the bolts m the detents may be withdrawn from engagement with the notched flanges for the purpose of adjusting the sleeves Kto vary the tension of the springs L,as desired. When these adjustments have been made, the detents M are thrust forward into the adjacent notches in flanges k and secured in place by the screws m.

In practice the sleeves K are turned upwardly 011 the screws II until the springs take up all play between the upper sides of the threads in the frame and the under sides of the threads on the screws and firmly support said frame in that position. By this means the frame is prevented from tilting up at either end and down at the opposite end when a piece of material enters or leaves the ma- 1 chine, and even perfect surfaces are insured if the machine is in other respects properly constructed and adjusted.

I claim 1. In a sanding-machine the combination with the roller-frame and vertical ad justin gserews engaging the same, of sleeves threaded on said screws and springs interposed between said sleeves and frame, substantially as and for the purposes set forth.

2. In a sanding-machine the combination with the roller-frame and vertical adjustingscrews engaging threaded holes in said frame and supported in bearings in the main frame, of sleeves threaded on said screws, dogs or catches for holding said sleeves from turning on said screws and spiral springs interposed between said sleeves and frame, substantially as and for the purposes set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

FREDERICK E. SC I'IMITT.

\Vitnesses:

CHAS. L. Goss, M. L. EMERIY.