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US 4,174,604 AGranted
Hedge trimmer apparatus
OwnerDavid J. Wilson, Sr., David J. Wilson, Jr.inventors
Life of this patent
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Abstract
A mobile hedge trimming machine including a two-wheeled carriage which supports a generally vertical, movable and tiltable base assembly, which in turn supports a motor driven hedge trimmer. Angularly displaced from the vertically oriented base assembly is a control column upon which there is located a control handle assembly by which the carriage is moved along a hedge by an operator, and by which the hedge trimmer is oriented both in elevation and tilt.
Claims4
A carriage for a motorized hedge trimmer comprising:
- a rollable first frame adapted to move along the ground, and having a pair of spaced wheels journalled about an axis;
- a generally straight, elongaed second frame supported by and rising from a point on said axle adjacent to one of said wheels, and including a generally vertically extending guide;
- a generally upward extending strut supported adjacent to the other of said wheels on said axle and connecting to an upper point on said second frame;
- an elevatable base supported by said second guide and adapted to be guided by said guide along said second frame;
- support means for supporting a motorized hedge trimmer on said base;
- tilt means for adjustably tilting said support means with respect to an axis which is normal to a plane parallel to the axis of said axle;
- an operating control assembly comprising:
- a triangular-shaped third frame coupled at its base to said axle and generally lying within a plane which is tilted with respect to said second frame from its base, base of third frame, to its apex,
- first control means supported at the apex of said first frame, including a first handle for providing, upon operation, a first bidirectional mechanical output, and
- second control means supported at the apex of said third frame, including a second handle for providing, upon operation, a second bidirectional mechanical output;
- elevation means responsive to a said first bi-directional output for elevating and lowering said base;
- and
- tilting means responsive to said second bi-directional output for tilting said support means with respect to a line parallel to said axle;
- whereby a motorized hedge trimmer attached to said support means may be selectively moved along a hedge and be selectively elevated and tilted.
11 more elements
Dependencies are inferred from the claim text.