US 9,221,187 B2Granted

Moving shear rail

AssigneeCleereman Industries, Inc.

InventorsRodney H. Chitko, Jeffrey J. Krueger

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Abstract

A sawmill including a band saw, mounted on a carriage. A moving shear rail is connected to the carriage such that the shear rail moves in synchronization with the band saw. The moving shear rail has a notch formed in the upper edge, and is positioned so that the notch is aligned with the band saw blade, and the upper edge of the moving shear rail extends at least to even with the band saw blade, and possibly even beyond the saw blade. The moving shear rail includes a shear rail plate carrying the notch, and a flexible element connected at each end of the shear rail plate. The flexible element is formed of conveyor links reeved about a pair of reels, including a last link that is removably connected to the shear rail plate. Each of the reels is mounted to a standard, one having a pivot, allowing that reel to be pivoted away.

Claims4

Dependent claims

A sawmill for cutting segments from a log, comprising:

a moving shear rail for use with a band saw, the band saw having a band saw blade, the blade having a predetermined width, and the band saw mounted on a carriage for moving the band saw in proximity to a log, for cutting segments from the log, the moving shear rail comprising a shear rail plate, having an upper edge and a notch formed in the upper edge, the shear rail plate connected to the carriage for moving with the band saw, the shear rail plate positioned so that the notch is aligned with the band saw blade and the upper edge of the moving shear rail plate extends at least to even with the band saw blade, wherein the shear rail plate has two opposing ends,
a flexible element connected at each of the two opposing ends of the shear rail plate so as to move with the shear rail plate as the shear rail plate moves with the band saw, and
a pair of reels, one reel positioned in proximity to each of the band saw ends of travel, about which the flexible element is reeved.

Dependencies are inferred from the claim text.

Facts

Application: 13/721,726Filed 20 Dec 2012
Published: US 2014/0174274 A126 Jun 2014
Granted: 29 Dec 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B27B 31/08
Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines:…
B27B 15/04
Band or strap sawing machines specially designed for length cutting of trunks: with vertically-guided saw blade
B23D 53/04
Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting: with the wheels carrying the…
B27B 31/06
Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines:…