US442420A - Band-saw machine - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. N. UOAN.

BAND SAW MACHINE.

No. 442,420. Patented Dec. 9, 1890.

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NOAII COAN, OF CINCINNATI, OHIO.

BAN D-SAW MACHINE.

SPECIFICATION forming part of Letters Patent No. 442,420, dated December 9, 1890.

Application filed May 22, 1890. Serial No. 352,722. (No model.)

To a. whom, it may concern.-

Be it known that I, NOAH COAX, a citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Band-Saw Machines, of which the following is a specification.

My invention relates to an improvement in band-saws; and it consists in the construction and relative arrangement of parts, as hereinafter described and claimed,and illustrated in the accompanying drawings, making apart of this specification, in which Figure 1 is a front view of the saw. Fig. 2 is a section on lineman, Fig. Fig. 3is aside elevation. Fig. a is a central vertical section of the journal of the lower saw-pulley, and Fig. 5 is a section through the guide and follower on which the saw-pulleys are mounted.

A represel'its the base of the machine, to which is secured the table 13 and segmental frame 0, on the face of which is a dovetailed groove 0.

1 represents a follower mounted in the groove 0, and on which the saw-pulleys 2 3 are journaled, the journal f being made in sections and secured on the opposite sides of the follower 1, as indicated in Fig. 4.

4 represents gear-teeth cut on the outer edge of the follower 1, into which mesh the teeth of the spur-wheel 5. The wheel 5 is actuated through the worm 6, worm-wheel 7 by means of the crank S.

9 represents saw-guides, which are also secured to the follower 1.

10 represents a boxing, in which the journal of the pulley 2 rests upon a buffer 11.

12 represents a hand-wheel for adjusting the tension of the buffer.

13 represents a d living-pulley secured upon shaft 14.

15 is a pulley on the same shaft, from which the saw-pulley 3 receives its motion through the pulley 16 at the opposite end of its shaft.

17 represents a tightening-pulley to maintain the tension of the belt and take up the slack as the saw-pulleys are shifted from one position to another. The pulley 17 is mounted in the hanger 18, which hangs from the shaft 14, and the tension is maintained by means of the rope 19, passing over pulley 20, and having at its opposite end a weight 21.

22 represents a feed-roller secured immediately back of the saw. It is mounted on the shaft 23, at the other end of which is a wormwheel 24, receiving motion through worm 25, pulley 26, and pulley 27, which is secured on the main shaft 11. The frame C is provided with segmental slots, as shown at h b, Fig. 2, in order to permitthe passage of the journals secured to the inside of the follower 1.

The operation of my device is as follows: The saw may be set at any desired angle to the plane of the table by turning the crank 8, which moves the follower 1, through worm 6, worm-wheel 7, spur-gear 5, and rack 4. The saw is then started, the pulley 17 keeping the tension of the belt by means of the rope 19, pulley 20, and weight 21, the feed 22 being operated on the main shaft through pulley 27 pulley 26, worm 25, and worm-wheel 21, the material being fed in in the usual manner until it reaches the feed-roll 22, which carries it steadily forward.

The feed-roller may be dispensed with in machines designed for light work.

Having described my invention, what I claim is 1. In a band-saw machine, the combination of the stationary segmental frame 0, having the segmental slots 12 b, and provided on one side with a segmental dovetailed groove 0, the adj ustablesegm ental follower-frame 1, mounted in the slotted and grooved frame C, and the saw-carrying pulleys and guides mounted on said follower-frame, substantially as de scribed.

52. In a band-saw machine, the combination of the frame A, the table B, the stationary segmental frame C, having the segmental slots b b and provided on one side with a segmental dovetailed groove 0, the adjustable segmental follower-frame 1, mounted in the groove 0, the saw-carrying pulleys 2 and 3, mounted in the adjustable follower-frame, and the driving mechanism, substantially as shown and described.

In a band-saw machine, the combination of the stationary segmental frame 0, having the segmental slots b Z) and provided on one In testimony whereof I have hereunto set my hand.

NOAH. COAN.

Witnesses:

T. SIMMONS, C. W. MILES.

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