US389064A - Emery-wheel dresser - Google Patents

Description

(No Model.)

G. H. DOUGLAS.

EMBRY WHEEL DRBSSBR.

No. 389,064. Patented Sept. 4, 1888..

UNITED STATES PATENT ETTcE-i CHARLES HENRY DOUGLAS, OF CHICAGO, ILLINOIS.

ENlERYWHEEL DRESSER.

SPECIFICATION forming part of Letters Patent No. 389,064, dated September 4, 1888.

Application filed December 21', 1886. Serial No. 222.741. (No model.)

To LZZ when it may concern.:

Bc it known that I, GnARLEs HENRY Done- Las, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Emery-meel Dresser, of which the following is a specification.

My invention relates to improvements in cmerywheel dressers in which wheels or disks are employed to revolve idly against the surface of the wheel to be dressed; and the objects of my improvements are, first, to cause the said disks to revolve more freely and with more firmness and accuracy than the devices heretofore employed for that purpose; second, to effectually exclude emery and dust from the bearings and to provide for their more perfect lubrication; third, to provide an easy and convenientmeans of taking up any rattle or lost motion caused by wear or otherwisein the bearings of the disk-shaft; fourth, to provide a means of guiding the dressingdisks in a straight line in front of the wheel to be dressed, and at the same time to afford aconvenient method of adjusting them against the wheel as it becomes dressed away. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a top view of a hand emery-A wheel dresser; Fig. 2, aside view of the large or disk end of the same, enlarged. Fig. 3 is a transverse section of Fig. 2 on a line through the center of the disks and shaft. Fig. 4 is an elevation of an emery-wheel dresser mounted on ways. Fig. 5 is a top view of the same. Fig. 6 is a transverse section of Fig. 2 with the male centers upon the disk-shaft.

Similar letters refer to similar parts throughout the several views.

The disks B are attached firmly to the shaft a, which is suspended and allowed to revolve upon the conical centers d and e. In the center of shaft ce there is a passage-way, y, for holding and conveying oil to the bearings, and also a passage, f, in the conical center e, through which the oil is supplied. Vhcn this shaft is in motion, the oil in the passages gradually oozes out around the bearings, lu bricating them, and also forcing away the emery and dust that may have settled upon the centers. The oil is held in the openingf by a metal cap, i, that slides over the opening.

A is the stock of the hand eincry-wheel dresser, which is made in two parts and held together with the screws b and c. By setting up screw b the center points, d and c, attached to the two halves of the stock A,are pressed into the centers of shaft a to make a close running rit,

and by this device the dressing-disks B are made to revolve firmly and accurately when brought in contact with the revolving wheel to be dressed, thus making a true aud even face thereon. By backing out the screws b and c the stock A will separate and allow the shaft a, with disks attached, to be removed or replaced at will. A fine adj ustmeut can thus be made and any unnecessary play from wear or otherwise easily taken up. The diskshaft a. in Fig. 6 is provided with male cent-ers, which revolve in the boxes 7i lz., through which there are oil-passages f f. This form of shaft is also adjusted to a close running rit by the same device as Figs. l, 2, and 3.

C, Figs. 4 and 5, is a bed, to which is attached a smooth round rod, E, upon which the stock D :is made to slide.

F is aset-screw, the lower end of which rests upon the smooth bevel of the bed C, upon which it slides when the stock D is moved along on the rod E in the act of truing a wheel. This set-screw is used to adjust the disks B against the wheel to he trued, which it does by raising or lowering the end of the stock D,through which it screws, and causing it to tilt upon the guiding-rod E sufficiently to press the disks against the emerywheel.

The center point d in Fig. 5 is made to screw through one of the wings of stock for the purpose of taking out and putting 1n the disk-shaft; also for the purpose of adjusting it to a close running fit. This is held in place by a jam-nut or set-screw.

To use this form of dresser most effectually, the bed C is bolted or clamped to the stand with the disks B touching the emcry-wheel. Then by turning the set-screw F, so as to canse the disks to press against the revolving wheel, and by sliding the stock D back and forth upon the rod E, the face ofthe wheel becomes nicely trued in the exact line that the shaft E may be set.

The stock A may be made in one piece of metal, with a slot in it of the proper proportions to allow the end that holds the disks to open far enough to take out or replace the disk-shaft when required and to make the necessary adjustments.

I disclaim the patents to Bush, No. 318,952; t0 Roberts, No. 242,046, and to Forbis, No. 367,287, as they do not embrace any part of my invention.

What I claim as my invention, and desire t0 secure by Letters Patent, is

l. An emery-wheel dresser in which the disk shaft a revolves on conical bearings, through which there are oil-passages f f, substantially as specified.

2. A11 emery-whee1 dresser in which the disk-shaft a is provided with a chamber or passage-Way, g, for holding and conveying oil to lubricate the bearings of the same, asspecied.

3. The combination, in an emery Wheel dresser, of the conical centers and bearings of the disk-shaft a, and the oil-passagesf and g, for lubricating the same, as specified.

which extends into both sides of the stock A for that purpose, as specied.

6. An emery-Wheel dresser provided with a bed, C, and a rod, E, or its equivalent, upon which the stock D may be slid or moved from one end toward the other, as on ways, for the purpose of dressing a true face or angle upon the emery-Wheel, as specified.

CHARLES HENRY DOUGLAS.

Vitnesses:

JAMES F. GRIFFIN, J oHN P. J oHNsoN.

Images