US3701238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fence mower
Assignee: Individual
•
Filing: 1970-08-28
•
Granted: 1972-10-31
•
Expires: 1990-08-28
Abstract
Abstract The invention has to do with utilizing a fence mower for mowing vegetation such as grass, weeds and the like in hard to reach places such as under and beyond fences supported by fence posts which vegetation is inaccessible to the conventional type mowers heretofore disclosed. The mower is operated by means of a lifting supporting arm attached to a wheeled tractor which supports and guides the mower durings operative and non-operative positions. The lower edge of the bottom portion of a sleeve and the upper spring held sleeve of a lower companion sleeve holds opposed cam faces on said sleeves in meshed position yieldingly, but upon the cutting element protruding through and under the fence coming into contact with a vertical fence post supporting the fence. The forward movement of the tractor will cause the blade cutting element under the fence contacting the post to turn backward 90* and thus allow the meshed cam faces of the lower companion spring held sleeve which is attached to the lower collar or housing which carries the blades to turn 90* and the matching cam face edges of the upper and lower sleeves to again releasably mesh and held only by tension of the spring will allow the cutting blade next under the fence to mow the vegetation under the fence forward thereof to the next succeeding fence post.
Inventors
- 👤 George Hintze Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:51
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/86
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
191 words
In a fence mower connected to a wheeled tractor by a supporting arm for placing and holding a plurality of blades of said mower alternately for cutting the vegetation beneath and beyond the fence and including a plurality of reciprocating blades, a centrally disposed drive shaft, an upper stationary portion and a lower revolvable portion, said drive shaft disposed through said upper and lower portions and rotatable therethrough, outer sleeves on both said upper and lower portions which are matched in end to end relation by a plurality of facing companion cam faced edges meshing said sleeves in releasably connected abutment, the lower revolvable portion turns a predetermined number of degrees with respect to the stationary upper portion upon a blade positioned beneath the fence contacting a post of the fence and the forward movement of the tractor feeding the blades forward will cause said blade so contacting said post to turn backward said predetermined degrees for placing said next ensuing blade of said plurality of blades to turn said same predetermined number of degrees to position said last named blade under said fence for cutting said vegetation under said fence.
Claim 2
Dependent Claim
191 words
In a fence mower connected to a wheeled tractor by a supporting arm for placing and holding a plurality of blades of said mower alternately for cutting the vegetation beneath and beyond the fence and including a plurality of reciprocating blades, a centrally disposed drive shaft, an upper stationary portion and a lower revolvable portion, said drive shaft disposed through said upper and lower portions and rotatable therethrough, outer sleeves on both said upper and lower portions which are matched in end to end relation by a plurality of facing companion cam faced edges meshing said sleeves in releasably connected abutment, the lower revolvable portion turns a predetermined number of degrees with respect to the stationary upper portion upon a blade positioned beneath the fence contacting a post of the fence and the forward movement of the tractor feeding the blades forward will cause said blade so contacting said post to turn backward said predetermined degrees for placing said next ensuing blade of said plurality of blades to turn said same predetermined number of degrees to position said last named blade under said fence for cutting said vegetation under said fence.
Claim 3
Dependent Claim
60 words
Incorporating claim 1 and including a disc having central hole therethrough, said centrally disposed drive shaft terminating in an offset portion adjacent its lower end and rotatable through said hole in said disc to provide an eccentric operable rotatable crank to impart rotation to said disc to operate a plurality of reciprocating blades during the cutting operation of said blades.
Claim 4
Dependent Claim
44 words
Incorporating claim 2 and including said upper stationary portion terminating in a collar, a plurality of lower blades attached to said collar and extending outwardly therefrom, upper reciprocating blades operable in reciprocating movement over said lower blades to perform cutting operation of the vegetation.
Claim 5
Dependent Claim
45 words
Incorporating claim 3 and including link means having one end thereof pivotally attached to said disc at spaced intervals circumferentially around said disc and the other ends of said link means being pivotally connected at a common point on each of said upper reciprocating blades.
Claim 6
Dependent Claim
80 words
Incorporating claim 4 and including a drive shaft on said tractor coupled with power rotating means thereof to impart rotation to said drive shaft thereon and endless turning means surrounding pulley means on said drive shaft of said tractor an the drive shaft on said mower whereby rotation is imparted to said drive shaft on said mower for revolving the drive shaft on said mower to operate the blades of said mower to perform the cutting operation of the mower.
Claim 7
Dependent Claim
72 words
Incorporating claim 1 and including said supporting arm connecting said mower to said tractor and so positioned and arranged on said tractor that the mower is attached to the left side of the tractor to enable the operator of the tractor to move clockwise inside a fence surrounding a fenced area to permit the operator of said tractor to perform the cutting operation of the vegetation under and beyond said fenced area.
Claim 8
Dependent Claim
72 words
Incorporating claim 1 and including said supporting arm connecting said mower to said tractor and so positioned and arranged on said tractor that the mower is attached to the right side of the tractor to enable the operator of the tractor to move counterclockwise inside a fence surrounding a fenced area to permit the operator of said tractor to perform the cutting operation of the vegetation under and beyond said fenced area.
References Cited (Backward Citations)
US2575369A
Cited
US2838901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |