US655104A - Milling-machine. - Google Patents

Description

No. 655,|04. Patented July 3|, I900. C. C. NEWTON.

MILLING MACHINE.

(Application filed Nov. 23, 1899.)

(No Model.)

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MILLING MACHINE. (Application filed NW. 23, 1899.)

3 Sheets-Sheet 2,

' (No Model.)

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Patented lu |y 3|, I900.

No. s55,|04.

0L 0. NEWTON.

MILLING MACHINE.

(Application filed Nov. 23, 1899.)

3 Sheets-Sheet 3,

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UNITED STATES PATENT @EFFiCf,

CHARLES C. NEWTON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE NEWTON MACHINE TOOL WORKS, INCORPORATED, OF SAME PLACE.

MILLING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 655,104, dated d'uly 31, 1900. Application filed N vember 23, 1899. Serial No. 738,106- (No model.)

To ctZZ whont it may concern.-

Be it known that I, CHARLES C. NEWTON, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Milling-Machines, of which the following is a specification.

The object of my invention is to provide means for returning the table of a millingmaehine by power while the cutter mechanism is out of action.

In the accompanying drawings, Figure l is a side View of my improved milling-machine. Fig. 2 is a front view. Fig. 3 is an enlarged sectional view of a portion of the machine, showing the friction mechanism; and Fig. 4 is a side view of Fig. 3, partly in section.

A is the bed of the machine, having an upright extension A, to which the sliding head B is adapted.

C is the milling-cutter shaft, adapted to bearings b on the head B.

On the sliding head B are slideways, to which a slide 0 is adapted. Mechanism is provided for raising and loweringthe head B, and this head is counterbalanced in the present instance, as clearly shown in Fig. 1.

Adapted to ways on the bed A is a table D. This table is driven in any suitable manner common to this class of machines from the, main driving-shaft E of the machine. In the present instance this driving-shaft is belted to a shaft E, and the shaft E is belted to a shaft E geared to the mechanism for feeding the table. Also geared to the shaft E by means of bevel gears e e is a vertical wormshaft E with which engages a worm-wheel f on the hand-shaft F, provided with a handled wheel F. The shafts E and E are provided with cone-pulleys, so that the speeds can be regulated, and the shaft E is also provided at its opposite end with a cone-pulley, which is in line with the cone-pulley on the drivingshaft E, so that the belt at this point can be shifted as well.

On the main driving-shaft E of the machine is a three-step cone-pulley, in the present instance in line with a three-step cone-pulley on the counter-shaft G, which is driven from the main line-shaft by. a belt passing around the fast pulley g. Adjoining this fast pulley is a loose pulley g, and adjoining the pulley g is another loose-pulley 9 to' which is secured a small pulley g ,'which is in line with a belt-wheel 'i on the stud I of the machine. In the present instance this belt-wheel i is on the hub of a friction-wheel i,having a V- shaped groove in its periphery. The hub of the friction-wheel is mounted on the stud I, as clearly shown in Fig. 3.

Pivoted to the stud I is a lever K, having an arm extending rearwardly from the pivot, and on this arm is an adjustable counterbalance 7s. Carried by the lever K is a wheel K, having a tapered flange adapted to enter the groove in the wheel z" and at the same time enter a groove in the hand-wheel F, as clearly shown in Fig. 3. 'The lever K is provided with a handle 70, within easy reach of the operator, so that when it is desired to throw the hand-wheel F in gear with the friction-wheel 43 all that is necessary is to press down upon the lever K, throwing its friction-wheel K in frictional contact with both wheels. the wheel t" is driven motion will be imparted to the hand-wheel F, and the motion will be conveyed through the hand-wheel and its con nect-ions to the table.

The milling-cutter shaft C has a gear-wheel C, which is driven from the shaft E, so that when the forward feed mechanism is thrown out of gear the milling-tool is also thrown out of gear.

The operation of the mechanism is as follows: In milling the slow forward feed is accomplished through the ordinary driving means common to this class of machinesnamely, the countershaft G, shafts E, E, and E -and it has been customary heretofore to return the table by the operator turning the hand-wheel F. By providing an extra pulley g on the counter-shaft G, so that the driving belt from the main line-shaft can be shifted onto this loose pulley, and by belting this pulley to the pulley t', which is connected to the friction-wheel t", I am enabled to drive this friction-wheel when the forward feed mechanism and cutter-shaft are thrown out of gear, and by the operator simply pressing down upon the lever K this friction-wheel, which is driven in a reverse direction to the feed mechanism, drives the feed mechanism of the table rearwardly, returning the table Thus if quickly through the medium of the hand-a wheel F, worm, worm-gearing, shaft 131?, and shaft E By throwing out the cutter-shaft with the forward feed the work is returned under the cutter without it being marred by connected tor-the pulley,.and.a friction-wheel geared to the feed mechanism of the table, a lever, a friction-wheel thereon engaging the two friction-Wheels so that a return motion may be imparted to the table, substantially the cutter striking it.

The forward feed mechanism and cutter-f shaft can be thrown intogear by shifting the main driving-belt onto the fast pulley.

I claim as my invention v 1. The combination in a milling-machine, of a bed, a milling-tool shaft, means for driving'said shaft so as to rotate the tool, means for moving the bed forward, and powerf mechanism for returning the bedwhen the forward feed mechanism and milling-tool "shaft are out-of gear, and means-for throwingj 'saidpower mechanism into gear with thebcd,

substantially as described. 3 2. Thecom'bination in amilling-machin'e, i

of a bed,:a standard, milling mechanism car-i riedby the standard, a table, drivingmech- .anism forrthe table, a counter-shaft beltedto the driving mechanism, a fast pulleyand a loose pulley on :the counter-shaft, a wheel, belted-to the loose pulley, a friction-wheel} as described.

3. The-combination in a milling ma'chine, of a bed, a table thereon, millingmechanism, a shaft E means for driving the shaft so as tofeed the table forward, a vertical shaft E geared to the shaft E a shaft,'F, geared to the vertical shaft, a friction-wheel mounted on the shaft F, a driven friction-wheel z" adaptedto be thrown into gear when the feed mechanism is stopped, a lever K carrying a friction-wheel K, adapted to be thrown into gear with both the friction-wheels 1) and F, substantially asand'for the purpose set forth.

In testimony whereof 'I have signed :my

rname to this specification in the presenceof two subscribing witnesses.

CHARLES C. NEWTON.

NVitnesses:

WILL. A. BARR, Jos. I-I. KLEIN.

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