US348146A - artman - Google Patents

Description

{No Model.) 2 SheetsSheet 1.

G. A. ARTMAN.

POLISHING ATTACHMENT FOR LATHES. No. 348,146. Patented Aug. 24, 1886.

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(No Model.) 2 Sheets- Sheet 2.

I G. A. ARTMAN. POLISHING ATTAGHMENT FORLATHBS.

$10,348,146. Patented Aug. 24, 1886.

N. PETERS, Pbolo-Ulhognpher, Washington. ac.

UNITED STATES PATE T FFICE.

CLIFFORD A. ARTMAN, OF DANSVILLE, NEW YORK.

POLISHING ATTACHMENT FOR LATHES.

SPECIFICATION forming part of Letters Patent No. 348,146, dated August 24, 1886.

Application filed January 26, 1855. Serial No. 154,072. (No model.)

To all whom it may concern:

Be it known that I, CLIFFORD A. ARTMAN, a citizen of the United States, residing at Dansville,in the county ofLivingston and State of New York, have invented certain new and useful Improvements in Polishing Attachments for Lathes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention consistsin a novel attachment for lathes, by means of which broom-handles and other like objects can be polished at the same time that they are being turnedin the lathe, all as will be more fully hereinafter described and claimed.

111 the drawings, Figurel is a top plan view of an ordinary lathe with my improved polishing attachment shown in connection therewith. Fig. 2 is a detached outside end view of my polishing attachment. der side view of the same, showing the manner of securing it to one part of the lathe. Fig. 4 is an inside perspective view of the same; and Fig. 5 shows the polishing-block detached. Fig. 6 is an enlarged perspective view of Fig. 1.

Referring to the drawings, a is the framework upon which the lathe mechanism is mounted.

a a are the shouldered ways upon which the frames carrying the cutting-tool and polishing attachment slide.

1) is the cutting-tool, which is secured in a frame of which 0, Fig. 1, is the upper portion and 0', Figs. 3 and 4, is the lower portion.

(1 is the piece of wood,which is being turned to form the broomhandle. It is secured at one end to the stationary chuck d, and at the other end to the revolving chuck d",,upon which are the pulleys d for the driving-belt.

e e are the rods, sliding in the bearings c, to the front end of which is secured the cross headf,having the center portion,f,surrounding the broom-handle. When the frame 0 ccarrying the cutting-tool reaches the cross-head f f it throws it forward,releasing the broomhandle from the chuck d.

Fig. 3 is an un-- lustrate the application of my improved polishing attachment, which is constructed and applied substantially as follows:

Referring particularly to Figs. 2, 3, and 4, g is a frame, preferably of hard wood, having the downwardly-bowed central portion, 9, faced with the metallic shoe 9" for the purpose of stability. This frame 5/ g is secured upon its under side to the frame 0 c, carrying the cutting-tool, by the metal cross-piece h. This cross-piece h has the turned-up end h, which is secured by the screw-bolt if to the frame 0, and underneath the frame a the curved wings h h of the cross-piece hare similarly secured by the bolts h h". The two frames, cand g, are additionally secured at the side by the screw-threaded bolt and nut 1 The other end, h of the cross-piece h serves as a pivotal bearing for the two arms k k, the lower ends of which encircle the end ha of the crosspiece h, and are held in place by the nuts 7c, the upper ends being connected by the bowed spring is", which serves to press the arms k is tightly together. Upon the inner faces of these spring-arms k k are seated the steel blocks Z Z, having their inner faces provided with the curved and rounded surfaces Z Z, which are polished and form the burnishingsurfaces which come in contact with the broomhandle immediately in the rear of the cuttingtool.

at is a metal brace, which is secured to the frame 9 on both sides of the bowed portion and serves to brace the arms is k in their upright positions. At the top of the arms 76 k are loosely pivoted the upright rollers n n. These rollers are adapted for engagement with the wedge 0, (see Fig. 1,) which, when the polishing attachment reaches the end of the broom-handle, enters between the rollers and separates the spring-arms k k, thereby releasing the broom-handle from contact with the polishing-blocks Z Z at the same time that the handle is released from the chuck (2*.

It will be seen from the foregoing descrip tion that my improved polishing attachment performs its work simultaneously with the turning of the broomhandle, and gives to its surface a finish which enables it to be at once utilized without further manipulation, thus polished surfaces on their inner faces adapted for contact with the article being turned, substantially as shown and described.

2. A polishing attachment for lathes, locat ed behind the cutting-tool, consisting of a pair of spring-arms having curved polished surfaces on their inner faces adapted for contact with the article being turned, and frictionrollers at their upper ends, to engage with a separate wedge for releasing the article from contact with the spring arms, substantially as shown and described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OLIFFORD A. ARTMAN.

Witnesses:

GEORGE E. ScoTT, JOHN ARTMAN.

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