US757763A

US757763A - Polishing-machine.

Info

Publication number: US757763A
Application number: US19156304A
Authority: US
Inventors: David Mccance
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-02-01
Filing date: 1904-02-01
Publication date: 1904-04-19
Anticipated expiration: 1921-04-19

Description

H0 MODEL.

. PATENTBD APR. 19, 190$. D. MOGANGE.

POLISHING MACHINE.

nnmnxou FILED 233.1, 1904.

snnms-snnnw 1.

No. 757,763. PATENTED APR. 19, 1904.-

' D. MUGANCE.

POLISHING MACHINE.

APPLICATION FILED IBBJ, 1904.

K0 MODEL.

2 SHEETS-SHEET 2.

Jlll'orgeys Patented April 19, .190

PATENT Prion.

DAVID MGCANOE, OF LOCKPORT, NEl V YORK.

POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 757,763, dated April 19, 1904:.

Application filed February 1, 1904. Serial No. 191,563- (llo model.)

To all whom it may concern:

Be it known that I, DAVID MoCANcn, a citizen of the United States, residing at Lockport, in the county of Niagara and State of New York, have invented a new and useful Polishing-Machine, of which the following is a specification.

This invention relates to polishing-machines, and more especially to machines designed primarily for use in polishing long articles, such as strips of metal, long pieces of tubing, and the like.

V The principal object of the invention is to provide a simple, .thoroughly-eflicient, and easily-operated machine by means of which long articles may be rapidly and uniformly polished and in which the pressure of the polishing member upon the article to be polished may be readily controlled.

A further object of the invention is to provide a machine of the character specified with improved means for supporting the frame carrying the polishing member in suitable relation to the carriage upon which the article to be polished is secured.

In attaining the objects above mentioned, and others which will appear as the invention is more fully disclosed, I make use of a novel construction, combination, and arrangement of parts ofa polishing-machine, as hereinafter fully described and claimed, and illustrated in a preferred form of embodiment in the accompanying drawings, it being understood that various changes in the minor structural details may be made Without departing from the spirit of the invention or sacrificing the advantages thereof. r

In the drawings; Figure 1 is a view in side elevation of the complete machine, showing a strip of sheet metal clamped upon the carriage in position to be polished. Fig. 2 is a sectional view on the line 2 2 of Fig. 1.

Referring to the drawings, in which corresponding parts are designated by similar charactors of reference throughout, 1 designates the main driving-shaft of the machine, which is suitably journaled in bearing-blocks 2 2, mounted upon any suitable standards, as the posts 3 3 3. The shaft 1 has pivotally mounted thereon a frame 4:, preferably composed of two slightly-convergent tubular members 5 and a transverse brace member 6, arranged At the free end of the frame 4 a shaft 11 is journaled in bearings provided therefor, and this-shaft bears the polishing element, which consists in the present instance of a wheel 12 of any suitable character. The wheel 12 is mounted on one end of the shaft, as shown, and a pulley 13 is rigidly secured upon the shaft between the ends of the frame members 5 to receive the power transmitted by the belt 8. Lubricators 14E of any ordinary or preferred construction are provided in connection with the bearings for the shaft 11 and the frame, and the members mounted therein are supported by means of a spring 15, suspended from an overhead support and connected at its lower end with a turnbuckle 16, which is in turn connected with a bar 17, bolted to a yoke 18, which straddles the belt 8 and is attached to the frame 4. The bar 17 is pivotally connected with a bar 19 above it, whose lower endis forked, as shown, and whose upper end is pivotally attached to an overhead support. The bar 17 is provided near its connection with the bar 19 with a loop 20, which serves as a handhold for-the operator in controlling the action of the polishing element.

The polishing-wheel is disposed above the line of travelof the article to be polished, in the present instance a strip of sheet metal, (indicated at S.) The article to be polished is mounted upon a reciprocating carriage 21, which is arranged for horizontal travel along suitable ways. In the form of the invention illustrated the Ways are rods or tubes 22, which are mounted in suitable standards 23 and exi tend through double guides 24:, attached to the under surface of the carriage. Upon the upper surface of the carriage clamping devlces of a character suitable for use with the article to be polished are provided, and when the machine is to be used in polishing strips of sheet metal the clamping devices preferably employed consist of strips 25, extending longitudinally of the carriage and secured in position by means of bolts 26.

Reciprocatory movement is imparted to the carriage by means of a pinion'27,which meshes with a rack 28, formed on the under side of the carriage. The pinion 27 is mounted upon a shaft 29, journaled in bearings 30, provided upon a support 31, which projects laterally from the supporting structure of the carriage and has the outer end thereof resting upon a standard 32, the inner end being supported by a longitudinally-arranged member 34, Which is attached at its ends to the standards 23. The shaft 29 is provided with

pulleys

35 and 36, over which travel direct and crossed

belts

37 and 38, respectively. These belts are driven from a counter-shaft 39, which is in turn driven by belting from the main shaft 1. By the

belts

37 and 38 motion may be imparted to the shaft 29 in either direction, and such motion will be transmitted through back gearing to the pinion 27, which is loose upon the shaft 29 and is rigidly connected with one of the elements of the back gearing.

By alternately imparting movement to the pulleys 37 and38 the carriage is given a reciprocatory movement along the ways provided therefor, and the upper surface of the strip of metal or other article secured upon the carriage will be subjected to thorough and effective action of the polishing element. In order to support the ends of the article carried by the carriage, I provide at the ends of the carriage-supporting structure brackets 40, in which horizontally-arranged rollers 41 are journaled. These rollers increase the length of the support for the article to be polished, so preventing bending thereof and keeping it out of contact with the upper ends of the standards upon which the carriageways are mounted.

The operation of the machine will be readily understood from the description of the construction of the machine and from the accompanying drawings. The article to be polished is clamped upon the carriage by any suitable clamping devices. Movement is imparted to p the carriage by means of the devices provided for that purpose, and movement is simultaneously imparted to the polishing-wheel from the main shaft 1. The operator will then grasp the loop 20, and by applying force thereto he will bring the toggle-levers more nearly into alinement, so depressing the polishing-wheel and bringing it into contact with the article to be polished. The pressure of the polishing-wheel upon the article to be polished will be controlled by the force agplied to the loop 20, and as the members of the toggle-joint are brought more nearly into alinement the pressure of the polishing-Wheel upon. the article to be polished will be increased, as will be readily seen. When it is desired to exert a maximum pressure upon the article to be polished, the toggle members will be forced into alinement and will be held in that position by a bolt or pin which passes through the fork at the end of the bar 19 and limits the pivotal movement of the bar 17 in the fork.

Having thus described the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent, 1s

1. In a polishing-machine, a pivoted supporting-frame, a polishing element carried by said frame, toggle members for forcing said frame into operative position, and a spring engaging one of said toggle members and holding said members normally disalined.

2. In a polishing-machine, a pivoted supporting-frame, a polishing element carried by said frame, a reciprocating work-carrier disposed beneath said polishing element, a pair of toggle-links arranged above said pivoted frame and having the lower member thereof 'pivotally connected with said frame, yielding means for holding said frame normally in inoperative position, and means disposed between said yielding means and said toggle members for adjusting the position of the supporting-frame relative to said yielding means.

3. In a polishing-machine, a pivoted supporting-frame, a polishing element carried by said frame, yielding means for holding said frame normally in inoperative position, toggle members-for forcing said frame into operative position against the action of said yielding means, and means for limiting the pivotal movement of said toggle members. i. In a polishing-machine, the combination of a pivoted supporting-frame, a rotary polishing element carried thereby, a carriage arranged for reciprocatory movement beneath said polishing element and in the plane of rotation thereof, a rack beneath. said carriage, a pinion engaging said rack, and means at one side of said carriage for imparting movement to said rack.

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

DAVID MOOANCE.

Witnesses:

ABNER T. HOPKINS, H. W. HOBART.

IOC

IIC