US619541A - S peters co - Google Patents

Description

No. 619,54l. Patented Feb. 14, 1899.

S. W. BUTTERFIELD. WOOD SAWING MACHINE.

{Application filed Apr. 4, 1898.)

No Model.)

By I M M HPNM (a 701'; flttorneys Tu: Norms Pmns co. PHOTO-LUNG. WASHINGYOE u. c.

4 Sheets-Sheet I.

No. 6l9,54l. Patented Feb. 14, I899.

- S. W. BUTTERFIELD.

WOOD SAWING MACHINE. (Application filed Apr. 4, 1898.) (No Model.) 4 Sheats-Sheet 2.

Witnesses 701 4 fittorqeys 1m: mums PUERS co. vnowmmu, WASHINGTON. u, c.

No. 6l9,54|. Patented Feb. I4, I899.

s.-w. BUTTERFIELD.

WOOD SAWING MACHINE.

(Application filed Apr. 4. 1898.) (No Model.) '4 Sheets-Sheet 3.

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No. 6l9,54l. 4 Patented Feb. 14, I899. S. W. BUTTERFIELD WOOD SAWING MACHINE.

(Application filed. Apr. 4, 1898., (No Model.) 4 Sheets-Sheet 4.

IL/0 RF) N o /v/ I If J6 141. w I /L Wiinesses; Janna-OZ fiufimfa'dalnvehcor UNITED STATES PATENT FFICE.

SAMUEL WVESLEY BUTTERFIELD, OF THREE RIVERS, CANADA.

WOOD-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 619,541, dated February 14, 1899.

Application filed April 4, 1898. Serial No. 6 76,482. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL WESLEY BUT- TERFIELD, a citizen of. the United States of America, residing in the city and district of Three Rivers, Province of Quebec, Canada, have invented certain new and useful Improvements in W'ood-Sawing Machines, (for which I have obtained Letters Patent of the Dominion of Canada, dated June 13, 1898, the application for which was filed May 31, 1898, Serial No. 81,973,). and I do hereby declare the following to be a clear, full, and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in wood-sawing machines.

The object of my invention is to provide a device of this character in which the logs or pieces of wood will be fed automatically to the saw.

A further object is to provide a log-holder in which the logs will be automatically placed in suitable holders, within which they will be held against disengagement during the period of sawing and from which the logs will be automatically dumped after being sawed.

To these and other ends my invention consists in the improved construction and combination of parts hereinafter fully described, and particularly pointed out in the appended claim.

In the drawings, in which similar letters of reference indicate similar parts in all of the Views, Figure 1 is a side elevation of my improved device. Fig. 2 is a plan View of the same. Fig. 3 is a detail of one of the log-holders. Fig. 4. is a plan view of a machine arranged with two saws. Fig. 5 is a side elevation of the same. Fig. 6 is a View similar to Fig. 4 as arranged for use with four saws. Fig. 7 is a side elevation of the same.

In the sawing of logs into suitable lengthssuch, for instance, as used in the manufacture of paper-pulp-where it is essential that they be sawed into fixed lengths and with the least possible amount of handling the present operation is very expensive, inasmuch as the logs must be handled many times, must be clamped in position byhand, and when sawed must be unclamped and taken from the machine by hand. This practice is very disadvantageous; and it is to obviate this and to provide an automatically-operated machine that. I have provided the herein-described construction.

A designates the frame of my machine,which is of any preferred construction provided it is substantial and will withstand reasonable wear and tear. The upper face of the framework (which in the construction shown in the drawings is formed for use with but one saw) is provided with a series of tracks or slides a, inclined downward from the rear to the front end of the machine. As shown, these tracks or slides are four in number, two on each side of the saw; but it is obvious that where more saws are used a greater number of tracks or slides are provided.

At each end of the machine is provided a series of drums or, having a plurality of sides, preferably six, each series of drums being removably connected to the frame. These drums are adapted to receive and rotate a series of endless log-carrying chains a", the chains being adapted to slide or be drawn over the tracks or slides a, as shown in Fig. 1. Each chain a is formed of a plurality of links a and connecting-bars a, the links a being preferably formed substantially as shown in Fig. 3, the upper face of the link having a V-shaped opening, the edges of the opening being provided with inwardly-extending teeth which are adapted to engage the periphery of the log and hold it in position while being sawed. As there are two chains on each side of the saw, it will be apparent that when the log is placed in position to be carried to the saw it will be held against any lateral or longitudinal movement by reason of its being in the V-shaped opening, while it will be prevented from rotating while being sawed by the teeth of, biting into the peripherythe more the inclination to turn the tighter the teeth will hold. After the log has been sawed the two pieces will be carried on by the chain and dumped automatically at the end of the machine.

The chains a are moved by means of a suitable sprocket-wheel of, mounted on the end of the shaft of the rear series of drums a,

the sprocket-wheel a being operated by a sprocket-wheel a mounted on the drive-shaft a of the machine, the two sprocket-wheels being connected by a suitable sprocket-chain a, the sprockets being arranged in such man-- face of which is connected one end of a pit-- man a the opposite endof which is pivotally connected to a lever 0. connected to one end of a shaft a, mounted in a suitable frame a. Mounted on the shaft or are suitable log-releasing dogs a, which are adapted to feed the logs to the carrying-chain a singly at each revolution of the disk a A suitable friction clutch or roll a is mounted in the frame A to throw the machine into and out of engagement.

The operation of the machine will be readily seen, it being obvious that when the frictional contact is made with the drive-shaft the hexagonal drums will rotate, and as each link a is passing under the log-holder table the releasing-dogs (1 will operate to release a log, holding the next from passing out, the log rolling into the series of parallel links a the front end of the dog aiding to start the log rolling. The logs are then sawed, as hereinbefore explained.

As shown in Figs. 4: to 7, inclusive, the same construction and arrangement is used when it is desired to cut the logs into small lengths at practically the same time.

As shown in Figs. 4 and 5, the saws are arranged to cut into three lengths, each portion being carried forward to the same point. It will be seen that the saws are arranged in such manner that the log will have passed the moving saw before coming in contact with the next saw in front, thus preventing any liability of the saw being bent or of accidents resulting from the contact of the central portion of the log with both saws at the same time. The construction shown in Figs. 6 and 7 is similar to that shown in Figs. 4 and 5,with the exception of the outer saws,which are adapted to saw off the ends of the log before being carried to the remaining saws, the four-saw construction being intended for the purpose of cutting up long logs into proper sizes for the remaining construction shown.

Having thus described my invention,what I claim as new is A sawing-machine, comprising a frame; a series of drums rotatively located thereon; a series of log-carrying chains mounted on said drums, each of said chains comprising a series of links and connecting-bars arranged a1- ternately with said links, each of said links havinga V-shaped opening, inwardly-extending teeth formed on said link extending into said opening, whereby the logs will be held from rotary movement on said chains; a driving-shaft mounted on said frame; connections between one of said drums and said drivingshaft, for imparting movement to said chains; a saw, rotatively mounted above and extending into the path of movement of said chains; a log-loader mounted at one end of said frame above said chains; and a connecting-bar, connected to said log-loader and said drivingshaft, whereby a movement of said shaft will automatically pass the logs into successive links, substantially as described.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

SAMUEL WESLEY BUTTERFIELD.

Witnesses:

W. J. RITCHIE, J OSEPI-I CHAMPOUX, Sr.

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