US3910016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gang lawn mower
Assignee: Jacobsen Manufacturing Co
•
Filing: 1974-08-08
•
Granted: 1975-10-07
•
Expires: 1994-08-08
Abstract
Abstract A gang lawn mower having a tractor with a frame and having mowers connected with the frame and a prime mover for driving the tractor and the mowers. Pivot mounting members are connected with the frame for pivotally supporting the mowers thereon, and there are two mowers arranged in end-to-end relation with a pusher member extending thereto for propelling the mowers and for pivotally supporting the mowers. A spring counterbalance arrangement extends between the frame and the pusher member for supporting the weight of the two mowers, and there is another mower disposed rearwardly and in the cutting path between the two mowers. Adjustment members extend to all mowers for adjusting the angle of cut, and the drive connections to the mowers are of a flexible nature so that the mowers can pivot and be adjustable and still be driven in those various positions. The drive to the front two mowers extends adjacent the pusher member, and springs are attached to the front two mowers for counterbalancing the weight at the outer ends of the front two mowers.
Inventors
- 👤 Anthony J Saiia
- 👤 Donald G Haffner
- 👤 Knud H Hoffmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:30
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/42; A01D34/43; A01D34/44; A01D75/00; A01D75/30; A01D75/306; A01D2101/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
174 words
A gang lawn mower comprising a tractor having a prime mover and ground wheels and a frame, a plurality of lawn mowers with two thereof disposed in side-by-side relation and being articularly connected together at their adjacent inner ends thereof, a lawn mower attaching member rotatively supported on said frame rearwardly of said two mowers and presenting a rotation axis extending transverse to the fore-and-aft axis of said tractor, a pusher member connected to said attaching member to be rotatable therewith relative to said rotation axis and extending from said attaching member and toward said two mowers, said pusher member having an extending end disposed adjacent said two mowers, connecting mechanism interconnected with said two mowers and said extending end of said pusher member, and a resilient mechanism connected with said attaching member to yieldingly urge said attaching member about its said rotation axis in the direction tending to raise and extending end of said pusher member, and thereby tend to raise said two mowers and thus counterbalance the weight of said two mowers.
Claim 2
Dependent Claim
174 words
A gang lawn mower comprising a tractor having a prime mover and ground wheels and a frame, a plurality of lawn mowers with two thereof disposed in side-by-side relation and being articularly connected together at their adjacent inner ends thereof, a lawn mower attaching member rotatively supported on said frame rearwardly of said two mowers and presenting a rotation axis extending transverse to the fore-and-aft axis of said tractor, a pusher member connected to said attaching member to be rotatable therewith relative to said rotation axis and extending from said attaching member and toward said two mowers, said pusher member having an extending end disposed adjacent said two mowers, connecting mechanism interconnected with said two mowers and said extending end of said pusher member, and a resilient mechanism connected with said attaching member to yieldingly urge said attaching member about its said rotation axis in the direction tending to raise and extending end of said pusher member, and thereby tend to raise said two mowers and thus counterbalance the weight of said two mowers.
Claim 3
Dependent Claim
59 words
The gang lawn mower as claimed in claim 1, wherein said resilient mechanism includes a spring supported on said frame, an arm projecting on said attaching member for rotating said attaching member about its said rotation axis, and said spring being operatively connected with said arm for yieldingly rotating said attaching member to tend to raise said two mowers.
Claim 4
Dependent Claim
42 words
The gang lawn mower as claimed in claim 2, including an adjustable Connection operatively connected between said spring and said arm for adjusting the force of said spring on said arm and thereby adjust the yielding rotative force on said attaching member.
Claim 5
Dependent Claim
75 words
The gang lawn mower as claimed in claim 1, wherein one of said plurality of lawn mowers is disposed rearwardly of said two mowers and in the cutting path therebetween, and pivot connections operatively connected between said frame and the rearwardly disposed said mower for pivotally mounting said mower on said tractor, and adjusting members connected between all said mowers and said frame for establishing the pivotal attitude of all said mowers on said frame.
Claim 6
Dependent Claim
48 words
The gang lawn mower as claimed in claim 1, including a drive connection operatively connected between said prime mover and said two mowers for powering said two mowers, and with said drive connection being flexible for powering said mowers in the various pivoted positions of said two mowers.
Claim 7
Dependent Claim
63 words
The gang lawn mower as claimed in claim 1, wherein said connecting mechanism includes a pivot connection for each of said two mowers for up and down pivotal movement of the outer ends of said two mowers, and a spring operatively associated with said pusher member and each of said two mowers for yieldingly upwardly supporting said outer ends of said two mowers.
Claim 8
Dependent Claim
68 words
The gang lawn mower as claimed in claim 6, including a rotation drive connection drivingly connected to said two mowers and being disposed between said pivot connections and thereby be spaced clear of said pivot connections, and a drive member operatively connected between said prime mover and said rotation drive connection and being flexible for powering said two mowers in the various pivoted positions of said two mowers.
Claim 9
Dependent Claim
108 words
The gang lawn mower as claimed in claim 1, including a shaft rotatably connected with said frame and extending transverse to the fore-and-aft axis of said tractor, said attaching member being a sleeve rotatably disposed on said shaft and supported thereby, an arm projecting on said sleeve for rotating said sleeve on said shaft, said resilient mechanism being operatively connected to said arm, a third one of said plurality of mowers being disposed rearwardly of said two mowers and in the cutting path between said two mowers, and articulated connections operatively attached between said shaft and said third mower for articularly connecting said third mower to said frame.
References Cited (Backward Citations)
US3668844A
Cited
US3824772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |