US475046A - Sawmill-carriage feed - Google Patents

Description

(No Model.) 3 Sheets+$heet 1..

I A. B. PALM-ER.

SAWMILL CARRIAGE FEED.

No. 475,046. Patented May .17, 1892.

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A. B. PALMER. SAWMILL CARRIAGE FEED.

No. 475.046].- Patented May 17, 1892.

R 6 e h S 3 R E M L A P R.

A m d o M 0 m SAWMILL CARRIAGE FEED.

Patented May 17, 1892'.

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UNITED STATES PATENT OFFICE.

AMOS B. PALMER, QF PORT ALLEGANY, PENNSYLVANIA.

SAWMILL-CARRIAGE FEED.

SPECIFICATION forming part of Letters Patent No. 475,046, dated May 17, 1892.

Application filed April 22, 1891. Serial No. 390,029. (No model.)

To all whom it may concern:

Be it known that I, AMos B. PALMER, a citizen of the United States, residing at Port Allegany, in the county of McKean and State of Pennsylvania, have invented a new and useful Sawmill-Carriage Feed, of which the following is a specification.

This invention relates towood-sawing machines, and more especially to circular-sawing-machine-carriage feed devices.

The object of the invention is to produce certain improvements in machines of this character; to which end it consists in the details of construction hereinafter more fully described and claimed, and as illustrated on the sheets of drawings, wherein Figure 1 is a plan view of this device. Fig. 2 is an elevation of the left side. Fig. 3 is a longitudinal section on the line 3 3. Fig. 4 is a perspective detail of the link broken, the parts which it connects being also shown. Fig. 5 is a perspective detail of the two-section pitman. Fig. 6 is a left-side elevation showing a modification. Fig. 7 is a perspective detail of the shifting mechanism.

Referring to the said drawings, the letter F designates the main frame-work of the device; A, the saw-arbor carrying the saw S and driven from the power-wheel P; T, the tracks for the carriage; D, a drum around which passes a rope R, which is connected to the two ends of the carriage G, and Q the shaft upon which this drum D is mounted. When this shaft is revolving in one direction it will be obvious that the carriage will be moved forward and when in the opposite direction the carriage will be moved backward.

Although I have thus described the carriage-operating devices which I preferably use, it will be understood that I may employ others without affecting the remainder of my invention.

Upon the arbor A is a pulley 1, connected by a belt 2 with a pulley 3, mounted on a shaft 4, which is journaled at one end in the frame F, and has a pivoted support 5 near its other end. Upon this extremity is secured a friction-wheel 6, which travels inside a drum 7,

that is secured upon the shaft Q. It is obvious that when this friction-wheel 6, which is of considerable size, is drawn into contact low it.

with the rim of the drum 7 and the parts are revolving in the proper direction, which is indicated by arrows, the carriage will be drawn backward and at considerable speed.

Upon the end of the arbor A is a pulley 10, from which a belt 11 leads over a pulley 12, thence backward and over a pulley l3, thence over a pulley 14, adjacent that numbered 12, and then back to the pulley 10 at the point of starting. As seen in Fig. 6, the belt 2 could be omitted, and the belt 11 might pass over the pulley 3 of the gig-shaft 4 by continuing the latter through the frame-work and locating the pulley 3 at a proper point, and this belt 11 could lead from any suitable source of power other thanits saw-shaft.

The pulley 12 is mounted on ashaft l2 and has a friction-wheel12 at its inner end standing adjacent the outside of the drum 7. In the same manner the pulley 14:,whichis some what larger than the pulley 12, is mounted on a shaft l l and carriesa friction-wheel 14.; which, however, is somewhat larger than the friction-wheel l2 and stands immediately bev The pulley 13 is mounted on a shaft 13 and carries a very small friction-wheel;

13 which stands inside the drum 7, all as best seen in Fig. 3. It will be seen that the rotation of the arbor A in the proper direction drives the friction-wl1eels 12 andlgl in the same direction, and by reasoh'of, the pe-- 1 culiar belting the friction-wheel 13 is turned in the opposite direction, all as indicated by the arrows; but as the former two stand outside and the latter inside the drum 7 they will cause it to turn in the same direction whenriage O is drawn backward at considerable speed, as is desirable, it may be forced for.- ward at variable degrees of speed,allof which are more or less than the speed of the return movement. My improved carriage-feed device is especially applicable to machines wherein the stock being sawed is constantly changing in size, and the speed of the carriage-feed must be adjusted accordingly.

Any suitable mechanism may be used for moving the various friction-wheels into and out of contact with the drum; but the means I preferably employ are hand-levers H H and H respectively connected with rods P 3 1 P and P, which pass through the ends of the frame and are attached to boxes X, within which the various. shafts are journaled ad-- jacent the friction-wheels. These levers are pivoted at their lower ends to brackets'K, carried by the frame, and springs E are preferably properly located to hold the various.

' friotiomwheels out of'contact with the drum when in. their normal positions, pivoted. supports 5 and 50. permitting the inner ends of the shafts to move, as willv be necessary.

It is well known to those skilled in the art that as soon as the log is sawed and the can riage rnoving devices are thrown'out, of gear of the shaft. 14., and is also connected with the pivoted support 5.. The rod P haspiw oted thereto a link P, which connects. Witha, pin p in the adjacent. side of, the rod P and beyond. this link: the said rod P extends tothe pivoted support 5, O-of the shaft. 13.. Thus it'aniy of the handles or levers. be drawn out,- ward power will be communicated to thepi-v- 'oted support 5 to throw the large friction- Wheel 6 into contact with the drum 7 but as soon as one handle is pressed inward, so. that its connected friction-wheel will be thrown against; the drum, the same movement throws the large. friction-wheel out. of. contact therewith, Suitable devices (not, shown);are preferably employed for holding the hand-levers at whatever points they may be set. It, will occur at once. that. if each of, the rods is connected to the pivoted support 5 and also to its own friction-wheel the movement of one friction-wheel will cause the simultaneous movement. of the. others, and all of them, will be thrown into contact with the, drum at. the. same time; but this I avoid, in the. following manner: The above-mentioned link 1?- has a l t PQin which the pin 19 fits loosely, as seen in, Fig, 4, and the rod P is in two sections, as seen in 5', which are loosely connected by a pinand slot, as shown. This construction ermits, the movement. Of one lever, rod, box, and friction-wheel without, the movement of the others, but: causes the movement of the pivoted support 5 simultaneously with the movement of each lever.

I do not confine myself to the exact details of construction, as considerable change may be made therein without departing from the spirit of my invention.

The feeding devices may be placed entirely independent of the saw-frame and driven from any source desired other than the saw-arbor.

What is claimed as new is- 1. In a saw-carriage feed, the combination,

- with the carriage, the carriage-feed shaft connected therewith, and a drum mounted on said shaft, of a large friction-wheel and a small fricti'on-wheel within said drum and secured at the ends of swinging shafts, means for revolving these shafts in opposite directions, boxes on said shafts, a. hand-lever, and a rod connecting said hand-lever with both, the boxes, one frictionr-wheel being out. of contact when the other is. in, contact; with the. drum, as and for. the purpose set forth.

2. In a saw-carriage feed, the combination,

with the carriage, the carriage-feed shaft connected. therewith, and. adrum mounted. on said shaft, of a large. friction-wheel and several small friction-wheels of different sizes adjacent said drum, swinging shafts upon which said friction-wheels: are mounted, said shafts having pulleys on their opposite ends, belting revolving thev shaft of the large wheel in one direction and of the smaller wheels in the opposite direction, and means, substantially as described, for moving the free. ends of the oppositely-revolving shafts in opposite directions simultaneously at will, as and for the:

purpose set. forth...

3-. In a saw-carriage feed, the combination, with the carriage, the. carriage-feed shaft connected therewith, a drum mounted on said shaft, a large friction-wheel within said drum,.

mounted on a swinging shaft, and belting revolving said. shaft in a direction to return the carriage, when the-wh'eelis in contactwith the drum,of a small friction-wheel mounted on a swinging shaft outside. the drum, belting revolving this wheel in the same direction as the large friction-wheel, a pivoted hand-lever, and a. rod in two sectionsloosely connected, the outer section extending from said hand- IIO lever and connected with the free end of the shaft of the smaller wheel and the inner section extending farther and connected with the shaft of the other wheel, as and for the purpose set forth.

4:. In a saw-carriage feed, the combination, with the carriage, the carriagesfeed shaft connected therewith, a drum mounted on said shaft, a largofriction-wheel within said drum, mounted on a swinging shaft, and belting revolv-ing'said shaft in a. direction to return the carriage when the wheel is in contact with the drum, of a. small friction-wheel mounted on a swinging shaft outside the drum,belting revolving this wheel in the same direction as the large friction-Wheel, a still smaller friction-wheel mounted on a. swinging shaft in side the drum, belting revolving this shaft in the direction opposite to the others,a pivoted In testimony that I claim the foregoing as hand-lever, a rod connected to the shafts of my own I have hereto affixed my signaturein to the two larger friction-wheels and having a presence of two Witnesses.

pin, another hand-lever, another rod connect- 5 ing this hand-lever with the remaining swing- AMOS PALMER ing shaft, and a link connected to this rod and WVitnesses: having a slot loosely engaging said pin, as and M. J. COLOORD,

for the purpose hereinbefore set forth. 0. W. HOOKER.

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