US835631A - Machine for grinding mosaic flooring. - Google Patents

Description

.'No. 835,631. ,PATENTED NOV. 13, 1906. W. H. MOON'EY, J. E. PEIRGE 6a T. H. MOONEY.

MACHINE POR GRINDING MOSAIC PLOOING.

APPLICATION FILED NOV. 13. 1905.

3 SHEETS-SHEET 1.

No. 835,631. PATENTBD NOV. 13, 1906.

W. H. MOONEY', J. E. PBIRGE & T. H. MOONEY.

MACHINE FOR GRINDING MOSAIC FLOORING.

APPLICATION FILED EOV.13. 1905.

8 SHEETS-SHEET 2.

Wi hmmm 'WILLiAn n. Moonen JOHN 'ing at Unirnn -l earns PATENT einen.

Entier .Pn-inca, AND: THOMAS n.1 Moonen l or DAYTON. onio.A J maestria veen emanan@ Mosaic Feoonme.

No. senesi.

Epeefication of LetterslPatent.

Patented. Nov. is, ieee.

.application filed November 18,1905.. Serial No. 287,042.

To mi?, whom. t may concern..-`

Be it known that we, WILLIAM H. Moonnr, JOHN ELLIOT Person, and THOMAS H;

MooNnY, citizens ofthe UnitedStates, resid- Dayton, in the county of Montgomery and State of (Ehio, have invented certain new and useful improvements in' Machines for Grinding yMosaic Flooring; and we do declare the iollowingtobe a full, clear, and exact description ci the invention,` such as will enable others skilled in the art to which it appertains to malte and use the same, reference being had to the accompanying drawings, and to the iigures of reference marked thereon, which form a part of this specification.

This invention relates te a machine ier levelin or grinding to a tine surface mosaic or marcie ooring or tiling.

The object of the invention is to" provide means whereby the labor incidental to this class of work is greatly curtailed, as hereinafter described and claimed. Preceding a detail description of the invention reference is made to the accompanyingpdrawings, of whichligure ,1 is-a top plan view oi the grindingmachine. Fig. 2is a side elevation. Fig. 3 is a vertical sectional view through the frame or the forward portion of the frame, illustrating the grinding mechanism.

n a detail description ci the invention similar reference characters indicate corresponding parts. i

The machine is movable by hand over the iloor during its grinding operation and for this purpose consists of a truck 1, supported on ground-wheels2 and having an extended bracket 3, which vforms a bearing dior the shaft 5 of the motel' 6, said motor being suit"- ably secured in position on the truck. The motor-shaft 5 drives the cone-shaped gear 7 which en ages a crown-gear 8 on -vertica shaft 9, t e said shaft being supported in bearings l()l on the bracket or arm 3. The shaft 9 has rigidly secured to it a cone-shaped pulley 11 which is in rictional contact with and drives a number of similar pulleys 12, assembled around it. These latter pulleys are mounted upon shaft 13 and are maintained in their relative positions by iitting in uplper and lower bearing plates or yokes 14, w ch project from a sleeve 15, that loosely surrounds the central shaft 9 and is held in position thereon by upper and lower collars 16.

In order that the pulleys 12 may be allowed to have compensating movement consequent upon the Wear or grinding effect, there is permitted a certain amount of up-and-down movement of the shafts 13 Within said yoke la. The extent of this movement is indicated by the space between the uV per surface of the yoke and the nuts or col arsv 17. Supported on the lower ends of the shafts 13 by means of universal couplings 18 are grinders 19, consisting of disks With a iiat grinding-surface which comes in contact with the surface .of the mosaic or marble flooring. In their operations these disks revolve on their' own vaires-to wit, the shafts 13-and they travel around the shaft 9, thuh having two movements, one upon their own axes and one upon the central shaft of the machine, both movements being simultaneous. enabled to travel in a circle around the shaft 9 while revolving upon their own axes hy a stationary ring 20 which is secured to the frame ofthe trucli and has a tapering inner They are surface 21, which engages the peripheries of the pulleys 12, the tapering surface Oi said ring allowing compensation for wear. it will thus be seen that the pulleys 12 are Jrictionally engaged on op osite sides by this ring 20 and the driving-pu ley 1l on the center shaft 9.

Having described our invention, We claim claim* f 1. lIn a machine of the type speciiied, a plurality of grinders revolving individually around a common center, a ulley adapted to simultaneously revolve eac grinder upon its own axis, and a stationary ring frictionally engaging the Aouter sides of revolving pulleys.

2. ln a machine for grinding flooring, a stationary ring, a driving-pulley mounted Within said ring, a plurality of driven Wheels mounted between said drivingpulley and engaged on their outer sides by said stationary ring, a plurality of grinders, and` universe connections between each grinder and its respective drivin -wheel.

3. In a machine for grin g mosaic loorin a central driving-Wheel, a series of tapere friction-Wheels driven by said central driving-Wheel, a stationary ring having its inner surface parallel with the tapered wheels and engaging the outer surfaces of said tapered wheelsha series of grindingmosaic Wheels mounted upon the shafts' of said l tapered Wheels, and a universal coupling connecting each of said grinding-Wheels With each of said shafts.

4. In a machine for grinding mosaic flooring, the combination with a motor, of a central driving-Wheel geared to said motor, a stationary ring surrounding said central driving- Wheel, a plurality of driven Wheels engaged at opposite points by said central driving-Wheel and said ring, a plurality lof shafts upon which said driven Wheels are mounted, upper and lower yokes in Which said shaftsl are loosely mounted and enabled' to 4have vertical compensating movement, a'sleeve surrounding the shaft of the central driving- Wheel and to Whichsaid yokes are rigidly lined, a plurality of grinders, and universal couplings by which said grinders are connected with the shafts ofthe driven wheels.

In testimony whereof We affix our signatures in presence ol tWo Witnesses.

WILLIAM H. MOONEY. JOHN ELLIOT PEIRCE. THOMAS H. MOONEY.

Witnesses:

C. M. THEOBALD, RL J. lVI'CGAnJrY;r

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