Simon AT40C Aerial Lift

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Wisconsin engine powered Manlift
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It works around the farm picking apples

Featured here is something that has become very popular at equipment rental sites. This is a manlift.

There are a variety of types depending on the working environment for which they are intended and user preference. There are at least 3 different lifting mechanisms that I can can think of. There is a scissors boom---basically a series of hinged 'x's that stand up like a cloths rack. they have a very small foot print and go straight up. You often see these battery powered on hard rubber tires. They work well inside buildings such as changing light bulbs in a Walmart Store because they will drive down the aisles. The down side is that they have no lateral reach. All they do is go straight up.

The other boom types are the folding boom and the squirt boom. what you see in the photo is a folding boom. IT has about 4 folding sections plus one telescoping section. IT will go up around 40 feet, and rotate 360 degrees and reach off to the out to the side and do it all with up to a 500 lb load (counting the operator and tools). The squirt boom will ultimately do the same thing, but with different geometry as it has a single telescoping boom.

The operator platform tilts forward as shown in one photo and pivots to the left and right side of the boom.

The model shown is suitable for outdoor locations, which are reasonably level. It can be driven with the platform elevated. Indeed all driving is done from the platform. You will find the outdoor models such as this one in both 2 and 4 wheel drive models which obviously has some impact on how well they get around. The axles are simply ones that you would expect to find under a 3/4 ton Ford Pickup--very generic. The machine featured here is fairly old, but has been repowered. It originally came out with a smaller Wisconsin air cooled gas engine which was worn out and failed. Though Wisconsin engines are on the way out ( The company sold out to Continental and EPA emission rules seem to have ended the usefulness of the market niche they used to have---larger air cooled gasoline engines), we were able to get a floor model to repower this unit.

If you are an old farmer you probably grew up cranking and cursing a Wisconsin engine on a haybaler or a combine, and it is ironic that now that they don't make them anymore, those problems starting has been largely resolved by the addition of electric start and an improved spark ignition system.

The drive is hydrostatic and the brakes automatic (the hydraulic pressure that turns the drive motor also releases the brakes). This unit includes a 110 volt generator powered by the engine so you can operate power tools from a plug in on the operator platform.

For more details a copy of the service manual --PDF format -- 9 mb file) is available.

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