US143232A

US143232A - Improvement in planing-machines

Info

Publication number: US143232A
Authority: US
Publication date: 1873-09-30
Anticipated expiration: 1890-09-30

Description

A. H. FRANK &. G. SPIBEK Planing-Machines.

N0. 143,'232, PatentedSeptembeISO,1873.

PATENT OFFICE ANDREW H. FRANK AND GEORGE SPIRE, OF BUFFALO, NEW YORK.

IMPROVEMENT IN PLANlNG-MACHINES.

Specification forming part of Letters Patent No. 143,232, dated September 30, 1873; application filed June 14, 1873.

To all whom it may concern:

Be it known that we, ANDREW H. FRANK and GEORGE SPIRE, both of the city of Buffalo, in the county of Erie and State of New York, have invented certain Improvements in Wood-Planing Machines, of which the following is a specification:

Our invention relates to an improved means for changing the speed or number of revolutions of the feed-rollersof a planing-machine; and it consists, principally, of a pulley composed of two or more concentric cylinders capable of being readily secured together or separated, so as to increase or reduce the size of the pulley, as maybe required.

In the accompanying drawing, Figure l is a side elevation of a planing-machine provided with our improvements. Fig. 2 is a fragmentary front elevation thereof. Fig. 3 is anenlarged sectional view of our improved pulley in line 00.x, Fig. 4. Fig. 4 is a front elevation of the pulley with the outer cylindrical portion in section. Fig. 5 shows the pulley with the outer portion removed.

Like letters ofreference designate like parts in each of the figures.

A represents one of the side frames of a wood-planing machine; b, the cutter-shaft; B, the cutters, driven in the ordinary mannor; 0, a driving-pulley mounted on shaft 0; D D D, gear-wheels for transmitting motion to the feed-rolls5 and e, a counter-shaft, car rying the pulleys E F. The pulleys G and. E are connected by an endless belt, 6. All of these parts are constructed and arranged in a common and well-known manner. G is the pulley, mounted on the outer end of the cuttor-shaft b, for transmitting motion to the pulley F by means of an endless belt, h. It

is composed of an inner cylinder or pulley proper, g, keyed or otherwise secured to the shaft b, and one or more concentric cylinders, g, fitting upon the pulley proper g, and one upon the other, when more than one are used, only one cylinder, g, being shown in the drawing. The cylinder g is secured to the pulley proper g by a fastening-pin, z, secured in the cylinder 9, and projecting inwardly into a knee-shaped recess or cavity, j, formed in the face of the pulley proper g, and extendin g to the side thereof, as shown at k.

In order to connect the parts 9 and g together, the cylinder 9 is so placed against the.

pulley g that the pin z coincides with the outer end is of the cavity j, when, by moving the part g laterally until the fastening-pin strikes the inner end of the cavity j, and partly turning it in the direction in which the pulley revolves, the pin' 6 is brought into the position shown in Fig. 4, whereby the parts are firmly locked together.

When two cylinders, g, are. employed, the inner one is provided with a similar cavity, j, for the reception of the fastening-pin of the outer cylinder.

Any other suitable device for connecting the cylinders g with the pulley proper g, such as a key or lateral setscrew, may, however, be employed, if preferred.

L represents a ti ghtcning-roller, pressing against the endless belt h, and mounted on the short arm m of the lever M, turning on a pivot, a. The outer end of the lever M is held in its respective position by'the notches of an are or segment, 0, secured to the side frame A.

It is evident from the foregoing that the size of the pulley G is readily reduced by re moving the cylinder g, and increased by reapplying the same, thereby diminishing or increasing the speed of the feed-rollers, as the nature of the work may require.

When the cylinder 9 is removed from the pulley proper g, the belt h becomes slack, and is tightened again by adjusting the roller L and lever M in an obvious manner.

Our improved pulley meetsiall the requirements for which ordinarily step-pulleys are used, and is less expensive in its construction,

while it requires no more space laterally than an ordinary simple pulley.

We claim as our invention- The pulley G, composed of the pulley prope g and one or more concentric cylinders, g,

capable of being readily secured thereto and detached therefrom by means of the fastening-pin t and cavity j, substantially as and for the purpose hereinbefore set forth.

ANDREW H. FRANK. GEORGE SPIKE.

Witnesses:

JOHN J. BONNER, EDWARD WILHELM.