Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
Wood planing machine provided with a cutter locking device
 A wood planing machine includes a machine base having first and second mounting sides. First and second pairs of posts are fixed on the machine base at the first and second mounting sides, respectively. A cutter carriage is disposed above the machine base, and has opposite end portions mounted respectively, vertically and movably on the posts. A cutter unit has first and second shaft portions journalled to the first and second end portions of the cutter carriage. The second shaft portion is formed with a first engagement section. A cutter locking device includes a locking plate mounted movably on the second end portion of the cutter carriage, and having a vertical plate portion disposed adjacent to the second shaft portion, and a horizontal plate portion disposed below the second shaft portion and formed with a second engagement section. A biasing unit biases the locking plate to move upwardly on the second end portion of the cutter carriage to an upper position to engage the first and second engagement sections, thereby preventing rotation of the cutter unit relative to the carriage. The locking plate is movable forcibly to a lower position to disengage the first and second engagement sections from each other. 
P & F Brother Industrial Corporation
B B B Y B
B23Q B27C B23Q Y10T B23Q
inventional inventional inventional additional inventional
Chiu-Tsun
Chang