Mower

• US 4,934,130 A
• Filed: 09/28/1988
• Issued: 06/19/1990
• Est. Priority Date: 09/27/1985
• Status: Expired due to Fees

• Current Assignee: Husqvarna AB (HUSQVARNA)
• Original Assignee: Husqvarna AB (HUSQVARNA)
• Inventors: Claesson, Tore V., Nilsson, Dan L., Johansson, Rolf A. G.
• Primary Examiner(s): Weiss, John
• Application Number:
  US07/310,604
• Time in Patent Office: 629 Days
• Field of Search: 56/6, 56/10.4, 56/15.2, 56/15.9, 56/17.1, 56/17.2, 56/16.1, 56/208, 56/DIG. 22
• US Class Current: 56/17.2
• CPC Class Codes: A01D 2034/645 Lifting means for the cutter of the lawnmower mounted at the front of the vehicle for inspection and maintenance
• CPC Class Codes: A01D 2101/00 Lawn-mowers
• CPC Class Codes: A01D 34/64 mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle A01D34/695 takes precedence

Abstract

This invention relates to a riding mower comprising a chassis supporting a driving unit intended to propel the wheels of the mower as well as a cutting attachment, the cutting attachment being movably fastened to the chassis and by means of an operating device can be brought from a lower cutting position to an upper non-cutting position. The cutting attachment has an upper and a lower displacement area, the engagement and disengagement of the cutting attachment being effected in the upper area, whereas the cutting attachment in the lower area can be moved upwards or downwards with its parallelism with the ground preserved and can be locked against downwards movement for different cutting heights. The mower is driven while the cutting attachment is in the lower displacement area.

Claims

1. A riding mower comprising a chassis, a driving unit and a cutting attachment mounted on said chassis, said driving unit being capable of driving the wheels of said riding mower and said cutting attachment, an operating device for moving said cutting attachment from a lower cutting position in a lower displacement area to an upper non-cutting position in an upper displacement area and vice versa, means co-acting with said cutting attachment when the latter is in the lower displacement area for moving said cutting attachment upwardly or downwardly in substantial parallelism with the ground, means on said chassis with a plurality of teeth, said operating device comprising a rod and a slide member each having a free end and a hook at the respective free end, the hook on said rod being releasably engaged in one tooth for locking the cutting attachment in an upper non-cutting position, the hook on said slide member being engaged in a selected tooth to establish the cutting height of said cutting attachment, and when said operating device is moved in order to lift the cutting attachment said hook on said slide member is disengaged from the selected tooth and the cutting attachment is elevated, and when said operating device is moved to lower the cutting attachment said hook on said slide member becomes engaged with said selected tooth whereby said cutting attachment automatically stops at its selected height, said operating device thus permitting movement of said cutting attachment in an upward direction to clear an obstacle while returning said cutting attachment to the original selected cutting height after clearing said obstacle.

2. A mower as claimed in claim 1 wherein said cutting attachment is mounted on the front of said chassis and is capable of rotational movement in said upper displacement area.

3. A mower as claimed in claim 1 further comprising a force transmission means, a plurality of followers and a link arm mechanism whereby said operating device through said force transmission means is connected to a selected one of said followers and which through said link arm mechanism acts on said cutting attachment.

4. A mower as claimed in claim 3 wherein said link arm mechanism further comprises a support means and rollers on said support means whereby said cutting attachment is supported by said rollers during cutting.

5. A mower as claimed in claim 4 further comprising means for rotatably coupling said support means on a location on said chassis behind said cutting attachment.

6. A mower as claimed in claim 5 further comprising a lever, and said support means via said link arm mechanism supports said lever on which the cutting attachment is connected, and said lever being movably secured relative to said support means, and the lever and the link arm mechanism being connected to one of said followers.

7. A mower as claimed in claim 1 further comprising a brake member, and said cutting attachment cooperating with said brake member whereby when said cutting attachment is moved to the upper displacement area the blades of said cutting attachment is stopped from movement.

8. A mower as claimed in claim 7 further comprising a plurality of pulleys and wherein said brake member is a rubber block secured to said chassis whereby said block in the upper position of said cutting attachment engages said pulleys driving the blades of said cutting attachment.