US139028A - Improvement in lathes for turning wood - Google Patents

Description

o. s. SMILEY &' c. 0 SMALL.

Lathes for Turning Wood.

Patented May 20, 1873.

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OTIS S. SMILEY AND CHARLES O. SMALL, OF AUGUSTA, MAINE; SAID SMALL ASSIGNOR TO SAID SMILEY.

IMPROVEMENT IN LATHES FOR TURNING WOOD.

Specification forming part of Letters Patent No. 139,028, dated May 20, 1873; application filed April 15, 1873.

To all whom it may concern:

Be it known that we, OTIs SEWALL SMILEY and CHARLES O. SMALL, of Augusta, in the county of Kennebec and State of Maine, have invented certain new and useful Improvements in Lathes for Turning Wood; and we do hereby declare that the following is a full, clear, and exact description thereof, that will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing and to the letters of reference marked thereon, which form a part of this specification.

Figure 1 is a side view; Fig. 2, an opposite side view; Fig. 3, a top plan with parts broken out.

Same letters show like parts.

Our invention relates to a means for turning out poles, stair-balusters, broom-handles, 850.; and consists of a head so provided with knives that any size of turning can be readily performed.

A shows the head. B B show rolling or turning posts. These posts extend through the head A, as shown, and are made fast or held secureby the nuts 0 G. D D are the knives, which extend through the posts B B, as shown in the drawing. In the head are slots E E, through which the knives D D may play. The post B is provided with a hollow shaft, F, which serves as a rest for the knife D. The knife D, being the lower of the two knives, has for its rest the base of the head A. Directly back of the knives, as shown, are set-screws G G, upon which the inner ends of the knives bear. These screws are for the purpose of altering the inclination or cutting-points of the knives, to make them cut a thicker or thinner shaving, whether the screw is turned backward or forward. The position of one of the screws is clearly shown in Fig. 3. H shows the bushing, which is held in position by means of the screw I.

This bushing may be of larger or smaller size, whether the turning to be done is large or small. The height of the bushing employed. is, in most cases, equal to the distance between the lower edge of the knife D and the base of the head A, although smaller may be used, if desired.

The operation is as follows: The head A, which is attached to proper machinery, revolves. The article to be turned is pushed into the head by proper feed-gears. The knife D first does its work by reducing the stick to the proper size for the knife D, which knife takes off another shaving, and the stick passes through.

It will be observed that, owing to the slots cut in the head and the revolving posts, through which run the knives, said knives can readily be swung out over the base of the head and a new knife inserted, if required. It will also be remarked that this is the most efficient manner of altering the set-screws so as to change the cutting of the knives as may be desired; for when the knives are thus swung outwardly it leaves the screws in a po- I sition to be easily operated upon-that is to say, there is nothing in the way to obstruct the hands or tools of the operator.

What we claim as our invention, and desire to secure by Letters Patent, is-

The combination of the head A, the rolling or turning posts B B, the nuts 0 G, knives D D, slots E E, hollow shaft 1*, set-screw G G, bushing H, and screw I, all combined and

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