Vehicle mounted boom apparatus

• US 4,063,359 A
• Filed: 01/12/1977
• Issued: 12/20/1977
• Est. Priority Date: 01/12/1977
• Status: Expired due to Term

• Current Assignee: Arthur J. Luscombe
• Original Assignee: Arthur J. Luscombe
• Inventors: Luscombe, Arthur J.
• Primary Examiner(s): Watson, Robert C.
• Application Number:
  US05/758,772
• Time in Patent Office: 342 Days
• Field of Search: 144/34 R, 144/34 E, 30/379, 30/379.5
• US Class Current: 30/379.5
• CPC Class Codes: A01G 3/08 Other tools for pruning, branching or delimbing standing trees
• CPC Class Codes: B25J 5/007 mounted on wheels
• CPC Class Codes: B27B 17/0091 Wheeled chain saws; Chain saws mounted on or driven by vehicles, e.g. for sawing trees in situ

Abstract

A vehicle mounted boom apparatus includes a lower boom member pivotally mounted on the vehicle and an upper boom member pivotally connected to the lower boom member. An elongate chain saw mechanism includes an elongate support arm shiftable mounted on the upper boom member to permit pivoting movement of the chain saw mechanism relative to the upper boom member about a pair of pivotal axes disposed substantially normal to each other. The chain saw mechanism is also provided with power shifting means to rotate the chain saw mechanism about its longitudinal axis relative to the upper boom member.

Claims

1. A vehicle mounted boom assembly mounted on a vehicle and including a support structure,

an elongate lower boom having one end thereof pivotally mounted on said support structure for vertical movement relative thereto,

an upper boom member having one end thereof pivotally connected to the other end of said lower boom member for vertical pivotal movement therebetween,

a pair of crank arms fixedly connected to one of said boom members and being pivotally connected together,

power means mounted on said lower boom member and being connected with said crank arms for shifting said upper boom member relative to said lower boom member,

a support bracket pivotally mounted on said upper boom member adjacent the other end thereof for swinging movement of the bracket relative to said upper boom member about a first axis,

a first hydraulic piston and cylinder mounted on said upper boom member and being connected with said support bracket for shifting the latter about said first axis,

a housing pivotally connected to said bracket for said pivotal movement relative to said bracket about a second axis disposed substantially normal to said first axis,

a second hydraulic and piston cylinder mounted on said bracket and connected with said housing for shifting the housing relative to said bracket about said second axis,

an elongate tubular support arm having one end thereof projecting into said housing and extending longitudinally therefrom, said tubular support arm being revolvable about its longitudinal axis relative to said housing,

an elongate chain saw assembly mounted on the outer end of said tubular arm,

and a power shifting mechanism in said housing operatively interconnected with said tubular support arm and being operable for rotating the support arm about its longitudinal axis.