US1481459A

US1481459A - Gang-saw mill

Info

Publication number: US1481459A
Authority: US
Inventors: George A Dickie
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-01-24
Filing date: 1921-01-24
Publication date: 1924-01-22
Anticipated expiration: 1941-01-22

Description

2 Sheets-Sheet 1 RNEY lNvENToR G. A. DICKIE GANG SAW MILL med Jan. 24. 1921 Jan. 22 1924.

Jan. 22 1924.

` G. A. DlcKlE j vlGmcsf'smw MILL l Filed aan. 24., 1921,v

; l2 Sheets-Sheet 42 Patented Jan.. Z2, '1924.

' matite GEORGE A. DICKIE, OF SEATTLE, WASHINGTON.

GANG-SAW MILL.

Application led January 24, 1921. Serial No. 439,464.

To all whom t may concern.'

Be it known that I, GEORGE A. DICKIE, a citizen of the United States of America., and resident of the city of Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Gang-Saw Mills, of which the following is a specification.

My invention relates to certain improvements in gang saws of a type which is intended for sawing small logs and has for its object the provision of means for better supporting and holding in proper position the sawed end of the log until the entire length of the log has been sawed.

The features of my invention which I believe te be new and upon which I desire to obtain a patent will be hereinafter described and then particularly pointed out in the claims.

In the accompanying drawings I have shown my invention embodied in the form of construction which I now prefer to use.

Figure 1 is a side elevation of a mill having my improvement applied thereto.

Figure 2 is a transverse section through the same mill showing how the sawed end of the log is supported while being carried away from the saws.

Figure 3 is a top or plan view of one of the bolsters carrying the board supportinr plates which engage and support the sawe end of the log.

It is the object of my invention to provide means for better supporting the sawed end of a log in gang mills, particularly in those which cut small round logs.

The log handling and feeding mechanism employs an endless chain, as 7, which is passed over suitable sprocket wheels, as 70, driven in any convenient manner. Secured to the chain 7 at suitable intervals are shafts 74: which carry

wheels

75 and 76 which travel upon guide rails, as 8 and 80. One of these wheels, as 75, is preferably made grooved and the rail 8 upon which it runs is similarly beveled so as to insure movement of the same in a true straight line. Each shaft 74 is provided with a bunk or bolster' 77 upon which the log 78 rests.

Similar mechanisms are used for feeding the log to the saws and for carrying away the boards into which the saws cut the log, except for such variations as are specifically described. n

Upon each of the holsters of the carrying away mechanisms I provide a pair of plates which extend upwardly and are adapted to ent-er the kerfs made by the saw which lies at each side of the center of the log. This is clearly shown in Figure 2. These plates may have an upwardly projecting llange 9 and a base flange 90. The base flange is provided with a pair of slots, as 91, (see Figure 3), through which pass securing bolts 92, by means of which it is securely held upon the bolster and by means of which also, the separation of the two plates 9 may be varied to correspond with the different thickness of the central cut which is sawed from the log. These are positioned so that they automatically enter the saw kerfs and serve to maintain the sawed portion of the log in vertical position and to prevent it from rolling over and, particularly after the member by which the rear end of the log is secured to the bolster of the other chain has been removed. Both of the chains 7 and 7 are provided with rails, as 11 and 12, so positioned as to engage the lower or return part of t-he chain and support it.

The above mechanisms will hold the partially sawed log against turning until it has been completely sawed. The supporting plates 9 being adjustable transversely of the log may be positioned to conform to any thickness of timber into which the center of the log may be sawed. While I have described these plates as entering the kerfs at each side of the central plank, it is evident that they may be separated more than this if at any time this may seem desirable.

What I claim as my invention is:

1. In a gang saw mill, a device for supporting the sawed end of the .log and conveying away the sawed lumber, comprising a trackway, and endless chain extending lengthwise of the trackway, a series of trucks secured to said chain at intervals and each comprising an axle, wheels upon the axle and engaging the trackway and a bolster, and a pair of plates secured to the bloster and adapted to enter saw kerfs in the log. w

2. In a gang saw mill, means for conveying away the sawed end of the log comprisin an endless chain carrying log-supporting bolsters, blades carried by the lbolsters and adapted to enter the` saw kerfsy and means for adjusting said blades transversely of the chain to accommodate diierent positions of the central saws.

3. A device as in elaiin 2 having blades provided with a base flange slot-ted transversely of the chain and securing bolts Within the slots of the base.

Signed at Seattle, King County, lVashington, this 15th day of January, 1921.

GEORGE A. DICKIE.