Archive for July, 2010

Roofmaster Model 62 Hoist

July 20, 2010

I was asked the other day about the Roofmaster Model 62 Hoist.  This is a hoist that we made from about 1956 until about 2000.  I will give a little history on this unique hoist.

This hoist was invented in the late 1930’s by Charles Cobb in Los Angeles.  Roofmaster became aware of the hoist and hired Charlie, as he was known.  We improved and refined the product.  It was sold over the entire United States.

It was made of 2″ tubing that was jig welded with ground “nose” cones to index into the next sections along with safety chains with snaps so the sections wouldn’t come apart.

The primary purpose was getting roll goods to the roof, but there was a gravel bucket attachment to the material carriage, along with a roof hopper and automatic ground hopper for large jobs.  The capacity was only 250#, but the hoist was fast, hence the nickname “jackrabbit”.

Automatic Gravel Roof Hopper

Model 62 Roll Ramp

It was sold as a 40′ unit and came with four 8′ sections, one 4′, one 2′ and one 1′, along with a 5′ bottom section.  But, the contractor could add 8′ sections for higher jobs.  I think the highest we went was in the 120′ range.

Charlie Cobb showing the Model 62 in operation

The top curved section held an eight horsepower Briggs engine and a cable spool.  It had an always on internal brake and a Twin Disc clutch that was operated by a second operating handle.  The operator would release the brake and engage the clutch at the same time.  The material carriage would travel up the extension sections until it reached the top curved section, where it would stop and either throw the rolls onto a ramp or the gravel into the top hopper.  Gravity would take the carriage back down to the ground, where the operator would apply the brake to stop it.

Jim Neinow and others at Midwest RCA, Nov 1960

This is not an active hoist for us at this time.  There are still some 62 hoists out there, and we do still make replacement parts, but most hoisting today is done by cranes or 1000# or 2000# hydraulic hoists.

I never did figure out why we called it a 62 hoist…

Painting Galvanized Flashings

July 12, 2010

We get calls from homeowners and contractors asking how to properly treat galvanized vents and other flashings before applying our Roofmaster Flashing Paint.  Manufacturers of these vents and flashings apply a slick priming oil which prevents the flashings from rusting.  Flashing Paint won’t properly adhere to the flashing with the presence of this oil.

There are solvents available on the market for cutting this priming oil, but here’s a quick and cheap tip that most people will already have at home.  Make a solution of about 10% vinegar and 90% water, and use this to clean and prep the surface.  This cleans and etches the surface of the flashing, which allows for better paint adherence.  For extra strong hold, prime the surface first.

For other products to help homeowners, simply search “homeowner” at roofmaster.com


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