# US 5,699,843 A · Multi-drum barking machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,699,843 A - Document ID: US5699843A - Status: Granted - Kind: A - Application number: 08/738,064 - Filed: 1996-10-25 - Granted: 1997-12-23 - Earliest claimed: 1996-09-20 - Inventors: Eric Gagne - Web page: https://patentgrep.com/patent/US5699843A ## CPC - B27L 1/10: using rotatable tools (B27L1/04, B27L1/08, B27L1/12 take precedence) - B27L 1/02: by rubbing the trunks against each other (B27L1/04 takes precedence); Equipment for wet practice {(B27L1/14 takes precedence)} - B27L: REMOVING BARK OR VESTIGES OF BRANCHES (forestry A01G); SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER ## Abstract A barking machine comprises a container for accommodating logs longitudinally therein, this container having a longitudinal side wall with a lower end, and a bottom wall including a first longitudinal opening adjacent to the lower end of the first side wall, a second intermediate longitudinal opening, and a third longitudinal opening. First, second and third longitudinal drum members are rotatively mounted in the first, second and third longitudinal openings, respectively, to expose a top portion thereof inside the container. A plurality of outer barking teeth are distributed on the rotary drum members to contact the logs and thereby bark these logs. Finally, a drive system rotates the drum members in the same direction for moving the barking teeth of the top portion thereof toward the longitudinal side wall. The bottom wall and the rotary drum members form a wall and drum member assembly having a greater slope from the first to the second drum member and a smaller slope from the second to the third drum member. ## Claims ### Claim 1 A barking machine comprising: a container for accommodating logs longitudinally therein, said container having a first longitudinal side wall with a lower end, a second longitudinal side wall opposite to the first longitudinal side wall, and a bottom wall including a first longitudinal opening adjacent to the lower end of the first side wall, a second intermediate longitudinal opening, and a third longitudinal opening situated on the side of the second longitudinal opening opposite to the first longitudinal opening; first, second and third longitudinal rotary drum members rotatively mounted in the first, second and third longitudinal openings, respectively, to expose a top portion of said first, second and third rotary drum members inside the container; a plurality of outer barking teeth distributed on the rotary drum members to contact the logs as said rotary drum members rotate to bark said logs; and means for rotating said rotary drum members in the same direction to displace the barking teeth of the top portion of the rotary drum members in the direction of the first side wall; wherein said bottom wall and said rotary drum members form a wall and drum member assembly having a first slope from the first drum member to the second drum member and a second slope smaller than said first slope from the second drum member to the third drum member. ### Claim 2 (depends on 1) A barking machine as recited in claim 1, wherein: the first, second and third rotary drum members are rotatable about first, second and third parallel rotation axes, respectively; and the first and second rotation axes are lying into a first plane defining an angle of approximately 25.degree. with the horizontal; and the second and third rotation axes are lying into a second plane defining an angle of approximately 12.degree. with the horizontal. ### Claim 3 (depends on 1) A barking machine as recited in claim 1, wherein the first slope has a value of approximately 25.degree. and the second slope has a value of approximately 12.degree.. ### Claim 4 (depends on 1) A barking machine as recited in claim 1, wherein the first, second and third rotary drum members each comprise an outer cylindrical surface on which respective ones of said barking teeth are mounted. ### Claim 5 (depends on 4) A barking machine as recited in claim 4, in which: said bottom wall comprises a first bottom wall section between the outer cylindrical surface of the first rotary drum member and the outer cylindrical surface of the second rotary drum member; said bottom wall comprises a second bottom wall section between the outer cylindrical surface of the second rotary drum member and the outer cylindrical surface of the third rotary drum member; the first bottom wall section comprises a first comb-like edge portion adjacent to the outer cylindrical surface of the first rotary drum member and formed with notches to enable passage of the barking teeth of the first rotary drum member, and a second comb-like edge portion adjacent to the outer cylindrical surface of the second rotary drum member and comprising notches to enable passage of the barking teeth of the second rotary drum member; and the second bottom wall section comprises a third comb-like edge portion adjacent to the outer cylindrical surface of the second rotary drum member and formed with notches to enable passage of the barking teeth of the second rotary drum member, and a fourth comb-like edge portion adjacent to the outer cylindrical surface of the third rotary drum member and comprising notches to allow passage of the barking teeth of the third rotary drum member. ### Claim 6 (depends on 1) A barking machine as recited in claim 1, wherein the lower end of the first side wall is formed with a comb-like lower edge portion adjacent to the outer cylindrical surface of the first rotary drum member and formed with notches to enable passage of the barking teeth of said first rotary drum member. ### Claim 7 (depends on 1) A barking machine as recited in claim 1, wherein: the first, second and third rotary drum members are rotatable about first, second and third rotation axes, respectively; and the barking teeth of the first rotary drum member each have a semicircular toothed surface centered onto the first rotation axis, the barking teeth of the second rotary drum member each have a semicircular toothed surface centered onto the second rotation axis, and the barking teeth of the third rotary drum member each have a semicircular toothed surface centered onto the third rotation axis. ### Claim 8 (depends on 1) A barking machine as recited in claim 1, wherein the top portion of the first rotary drum member is located adjacent to an inner face of the first longitudinal side wall.