US390525A - Log-carriage for saw-ivjills - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

W. T. SMITH. I LOGGARRIAGE FOR SAW MILLS.

No. 390,525. Patented Oct. 2, 1888.

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Th e d 0 M 0 N Patented Oct. 2, 1888.

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w. T. SMITH. LOG CARRIAGE FOR SAW MILLS.

No; 390,525. Patented 0012.2, 1888.

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time STATES ATFNT tries.

WVILLIAM T. SMITH, OF BIRMINGHAM, ALABAMA.

LOG-CARRIAGE FOR SAW-MILLS.

SPECIFICATION forming part of Letters Patent No. 390,525, dated October 2, 1888.

Application filed March 7, 1888, Serial No. 266,429.

To aZZ whom it may concern.-

Be it known that I, WILLIAM T. SMITH, a citizen of the United States, residing at Birmingham, in the county of Jefferson and State of Alabama, have invented certain new and useful Improvements in Log- Carriages for Saw- Mills and System for Running the Same, of which the following is a specification so full, clear, and exact as will enable those skilled in the art to which this invention appertains to make and use the same, reference being had to the appended drawings, forming a part hereof.

This invention relates to certain new and useful improvements in log-carriages for sawmills; and it consists of a carriage and a system for running the same, as will be hereinafter more fully set forth in the specification, and pointed out in the claims.

One object of my invention is to provide a saw on either side of a circular track, so that the log is sawed twice during the circuit of the track.

A still further object of my invention is to provide mechanism whereby the log shortly after leaving the saw is automatically pushed laterally on the car, so that when it reaches the next saw it presents a surface to be sawed.

These objects I accomplish by the means hereinafter d escribed,and illustrated in the accompanying drawings, forming a part of this specification, and on which similar letters of reference indicate the same or corresponding features, and of which Figure 1 is adiagraminatical plan view illustrating my system of track, showing the construction of the switches, &c. Fig. 2 is an enlarged detail plan view, more clearly showing the construction of the switches. Fig. 3 is a side elevation of the rod and bars shown in Fig. 2. Fig. at is a side elevation of the improved truck for conveying the logs. Fig. 5 is a view thereof showing the log before itis sawed and means for pushing the same laterally. Fig. 6 is a similar view showing the log after it has passed the saw and as the carriage is turning one of the corners. Fig. 7 is a detail side elevation, more clearly showing the construction of the mechanism for pushing thelog. Fig. 8 is a side elevation of the guiding-block which (No model.)

assists in operating the head-block. Fig. 9 is a transverse sectional view on the line a w of Fig. 1. Fig. 10 is a plan view of the same. Fig. 11 is a plan view of a portion of two cars, showing the connecting coupling. Fig. 12 isa detail view of the hinge used therefor, and Fig. 13 is a plan view showing the coupling attached to a car as it appears in the act of rounding one of the curves or corners of the track.

The letter A designates one section of a railway-track, and the letter B another, the two being parallel to each other and connected together near their opposite ends by a semicircular section, 0 and D. At the points E F G H, respectively, I locate a switch, I, the same being constructed as more clearly illustrated in Fig. 2, which I shall now proceed to particularly describe.

Firmly fixed upon the ground or to a platform, as desired, is a rock-shaft, J, having near one end a handle, K, and provided at both ends with couplings L M, to the former of which is connected a rod, N, and to the latter a rod, 0, the said rods N and 0 being, however, connected to the couplings-the former, N, on the upper side of the rod J, and the latter, 0, on the lower side-so that when the handle K is turned over in the direction indicated by the arrow the rod N will travel in the direction indicated by the above-mentioned arrow and carry with it the sections P and Q of the track connected to it, while the rod 0 will travel in a contrary direction, the consequence of which is that the section 1? will be brought in a straight line and form a part of the track B, and the section Q will be thrown entirely out of line, and the car can run only in a straight line up and down the track B. These switches are used only occasionally, as their usual position is that shown in full lines, so that the cars will, as a rule, travel in an ellipse and in the direction indicated by the arrow in Fig. 1.

On the farther side of the track A and B,

to drivethem being applied to the pulleys V and WV. By this arrangement the log is sawed twice in its passage once around the trackfirst, by the saw R, and, secondly, by the saw S, the log being moved laterally after its passage at the first saw by means which will hereinafter more fully appear.

The letter A designates a log carriage, the same consisting of a body, B, mounted upon trucks 0' and D, the trucks being provided with curved depending arms E, which carry grooved rollers F, which, as more clearly seen in Figs. 5 and 6, run against the inner edge of the upper portion of the rail, the purpose of which will presently appear. The body B of the car is provided with slots at either end,and therein are mounted the plane rollers G.

At a short distancefrom the curved portion of the railroad-track and describing a concentric curve with the track, yet in a vertical plane beyond the rail, I place a railing, preferably of wood faced with iron, G, on itsinner side, said railing being supported and braced by bars H and I. The purpose of this device just described is to assist the car in turning short curves, the roller F running against the inner side of the rail, and the roller G runningagainstthe railin g j ust described-a means which, by actual trial, I find perfectly satisfactory.

Mounted upon the lower side of the trucks is a beam,'K, on which is mounted a rackbar, L, with its teeth turned downward. EX- tending across the track is a shaft, M, and at a point midway between the rails and mounted on said shaft is a pinion, N, and as the ear passes over the pinion N the rack-bar L is engaged therewith and motion is given to the car.

For a few incheson either side of the pinion N,I construct, as more clearly seen in Fig. 9, a sort of chair consisting of uprights O,hav-

' ing at its upper end pulleys or rollers 1?,which engage the upper laterally-extending edges of the rack-bar L. Inthis way a sure and firm union is had between the pinion and the rackbar, and the ear prevented from slipping or moving otherwise than steadily on its way. The log is placed upon the bars Q, on which the head-blocks B are mounted, and I will now proceed to describe the mechanism by means of which I automatically effect a pushing laterally of the log to be sawed.

At the points S and T, I locate a beam, U, having a curved slot, V, on its inner face, and as the carriage moves by these points the lever W travels in said curved slot V, the pawl thereon engages with the ratchet-wheel X, which turns the pinion Y, mounted on the same shaft with it, which pinion Y engages the rack-bar Z on the under surface of the head block, and thus pushes said block forward, and, as a consequence thereof, moves laterally the log, so that when it reaches the next saw said log is again ready to be sawed. In Figs. 11

i and-13 I illustrate the coupling I use in connecting the cars together in such a manner that they can readily and easily turn the cor- 11ers.

To each ear is secured a projecting beam, A, to which on the inner side is seen red one member of the hinge, shown in Fig. 12, and to the beam or block B, I secure the other member of said hinge. In this manner the cars have full swing in turning the curves and pass them easily; but in order to prevent the other side of the block B from its tendency to sag and injure the hinge I secure to the blocks A a curved bar, 0, and I mount upon the block B two or more eyes, through which the curved bar extends, so that as the cars turn the curve, as more clearly seen in Fig. 13, the block is allowed to run considerably forward on the off side, yet nevertheless is firmly supported.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the track, of saws situated on opposite sides thereof and running in opposite directions, and knees adapted to move the logs laterally to present a sawingsurfaee for the next saw.

2. The combinatiomwithithe track and logcarria-ges, of saws situated on opposite sides of the said track and running in opposite directions, knees adapted to move the log laterally, for the purpose set forth, a lever having connection with said knee, and a beam having a curved slot adapted to receive the said lever.

23. In a system for carrying logs, the combination, with an endless track and a shaft provided with a pinion located near said track, and an upper adjacent curved rail or railing located near each of the curves in said track, of a log-carriage whose body is provided with rollers which impinge against said upper adjacent curved rail, and whose trucks are provided with a rack-bar,witl1 which the pinion intermeshes, and one or more rollers connected therewith and constructed to impinge against the track-rails and facilitate the car in rounding curves.

4. The combination, with the endless track and saw-carriages, of the head-blocks Q and R, lever WV, pawl, ratchet X, pinion Y, rackbar Z, and beam U, having slot V, all arranged in the manner and for the purposes substantially as herein shown and described.

5. The combination, with the endless track, of log-carriages adapted to run thereon, and having curved depending arms and grooved rollers carried by said arms, for the purpose set forth.

6. The c0mbinati0n,with the parallel straight tracks A and B and semicircular sections 0 and D, forming an endless track, and one or more log-carriages constructed to run thereon, of saws respectively located on the farther side of the said tracks A and B and adapted to run in opposite directions.

7. In a system for carrying logs, the combination, with an endless track, a shaft pro vided with a pinion located near said track, In testimony whereof I affix my signature in and two or more cars provided with raokthe presence of two witnesses.

bars constructed to be engaged by the pinion and receiving motion therefrom, of a connect- WILLIAM '1. SMITH. ing-block hinged on its inner side to each car, and provided on its farther side with Witnesses:

eyes, into which a projecting arm from each A. E. L. KEEsE,

car extends. WM. LAUXMANN.

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