US 4,942,725 AGranted

Horizontal cutting machine

OwnerFred A. Ruder, Sr.inventor

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Abstract

A machine for mowing grass, weeds, vegetation and the like is disclosed herein. The machine is a conventional rotary type lawn mower converted to a sickle-type cutting machine which enables the user to cut vegetation around trees, fence posts, rocks, etc. In use, the blade of a conventional rotary lawn mower is removed, thus exposing the power drive shaft. A torque converter is mounted onto the power drive shaft. The torque converter is connected to a transfer block by means of an endless belt. The transfer block is designed to transfer the circular motion imposed upon it by the power drive shaft and converting this circular motion into a reciprocating movement which is used to power a reciprocating cutting blade. The cutting blades are superimposed upon each other and one of the blades is free to move with respect to the other. The transfer block can be mounted onto the underside of the lawn mower by conventional bolts and includes a driving pulley and a cam which rotates with the pulley, said pulley being driven by the endless belt. The rotating cam engages the moveable cutting blade which results in a reciprocating cutting blade which is then used to cut the vegetation. The transfer block is made such that it is adjustable in a vertical direction and can therefore accommodate mowers of all types, regardless of the deck height.

Claims3

Dependent claims

A mowing machine and power driving source comprising:

a mowing deck including an underside deck surface,
a transfer block including a base support, having a plurality of sides,
a first connecting member affixed to one of said sides of said base support,
a second connecting member affixed to another of said base support sides,
a third connecting member connected to said first and said second connecting members such that a generally rectangular configuration is described by said base support member and said first, second and third connecting members, said third connecting member being attached to the underside deck of said mowing machine, said base support member being further supplied with an opening having a longitudinal axis generally parallel to a plane described by said first, second and third connecting members,
a bearing member including a bearing surface and a keyway slot at one end of said bearing surface, said bearing being slidingly inserted into said opening located on said base support, said bearing member further including on one terminating end thereof, a boss disposed on said end of said bearing member and positioned a certain distance away from the longitudinal axis of said bearing member,
a pulley member mounted on said bearing member, and including keyway means for fastening said pulley to said bearing member,
an idler arm adjustably mounted on one of said connecting members, said idler arm further including an idler pulley,
a torque converter extending from said power driving source and being connected to said pulley member via an endless belt, and
a bar cutter, having an elongated slot, mounted onto said base support member such that said boss sits within said slot such that when rotational motion is applied to said pulley member said boss member imparts reciprocating movement to said bar cutter containing said slot.

7 more elements

In a mowing machine, a cutting mechanism comprising:

a power driving force,
a plurality of ground engaging wheels,
a support deck having a topside and an underside, said power driving source secured and supported by said support deck,
a top support, having first and second terminating ends, secured to said underside,
a first and second side support member attached to said first and second terminating ends respectively of said top support,
a base support connected to said first and second side support members, said base support member being adjustable in a vertical direction with respect to said first and second side support members, said base support having an opening therethrough and a bushing secured in said opening,
a bearing member having a boss at one end thereof and a keyway slot at another end thereof, said bearing member slideably inserted in said bushing,
a pulley mounted on the slot end of said bearing member and secured thereto by key means in combination with said keyway slot, thereby rotatably securing said pulley to said base support,
an idler pulley support secured to one of said first and second side support members, said idler pulley support being adjustable with respect to said first or second side support,
an idler pulley rotatably secured to said idler pulley support,
means for biasing said idler pulley towards said top support,
an elongated cutting bar including a first set of cutting teeth and a second set of cutting teeth, said second set of cutting teeth superimposed on said first set of cutting teeth, and said second set of cutting teeth being reciprocably moveable in a longitudinal direction defined by said elongated cutting bar, said second set of cutting teeth further including an elongated slot at one end thereof, said cutting bar secured to said base support such that said slot is in engagement with said boss, and
said pulley being rotatably secured to said base support, being in rotational engagement with said power driving source by means of an endless belt, said idler pulley applying a biasing force on said endless belt in a direction which increases tension of said endless belt between said pulley and said driving source.

10 more elements

Dependencies are inferred from the claim text.