Restoring a Pre-Civil War Cotton Gin

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Larry Lemmond (left) and Bill Friday with the restored gin.
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In order to make the saw shaft and the brush shaft turn in opposite directions, so that the bristles can remove lint fibers from the saw teeth during the ginning process, an idler pulley is required.
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The disassembled brush drum assembly, with galvanized metal under the brush sticks to seal the interior.
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The Star's brush stick dimensions are still standard for a number of modern gins, making replacement parts (made of poplar wood and plastic bristles) readily accessible.
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There was a bit of a learning curve on iron pours: None of the ribs made during this pour were suitable for use in the gin.
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Early gin stands had anywhere from 30 to 80 saws, as specified by the purchaser. The Star has 50 saws, the most common size in the 1860s.
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The star on this casting offers the only clue of the identity of the identity of the gin's original builder, and it is inconclusive.
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A related piece manufactured by the Parry foundry in Texas.
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The Star on the job at the Burritt museum, belted to a tractor with a condenser full of spun fiber behind.

After Eli Whitney and H.
Ogden Holmes patented the world’s first modern saw cotton gin in 1794, allowing
vastly increased harvest capacity, planters increased their crops so rapidly
that gin production could not keep pace. Independent cotton gin builders began
supplying the need without regard to paying royalties to Whitney or Holmes.

A gin currently being
restored by the Southland Flywheelers Antique Tractor & Engine Club, based
in Hartselle, Ala., is one of those cotton gins. No name
is visible anywhere on it, probably the result of the manufacturer’s attempt to
avoid a patent infringement lawsuit, but we call it the Star. The Star was
likely built using saws, brushes, shafts and pulleys from a foundry, which then
shipped the parts to a carpenter who built the frame and installed the iron
pieces.

Possible link to Texas foundry

Two notable features may
provide a clue to the originating foundry: a small star cast onto each bearing
grease cap and knurled bronze drums to clamp the bearing halves together.

M.L. Parry’s Star Foundry, Galveston, Texas,
is a prime candidate. From the 1840s to the 1860s, Parry’s foundry built cotton
presses and other gin equipment, shipping the equipment to local carpenters for
assembly. Parry’s Star Foundry ceased operation in 1869. Thus far, we are
unable to confirm that the Star Foundry built the Star gin; it’s just a theory.

The gin’s wood frame was
made from poplar (also known as cottonwood), which grows in profusion all over
the South and has long been a preferred material for carpenters in this area.
Extensive research into early cotton gin stand construction styles also points
to a pre-Civil War era origin, as later models eliminated the outriggers, used
cast iron frames and added new features such as precleaner saws and automatic
feed machinery. The Star has only the single saw shaft; cotton was hand-loaded
in batches to the feed chamber.

The Burritt on the Mountain museum, Huntsville, Ala., gave the Star cotton gin to the
Southland Flywheelers in 2010. Tracing the gin’s history from there, it was
learned that the late Georgia Dunn donated the piece to the Burritt, having
earlier received it from Hardwicke Kay, Corinth,
Miss., whose deceased mother had
purchased it from an area antique dealer. From there the trail went cold.

Bliss of restoration
ignorance

After it was donated to the
Flywheelers, the gin remained in a barn alongside several old tractors for most
of a year until I took an interest in its restoration. Had I known just how bad
a shape the old relic was in, I might have passed up the opportunity, but
ignorance is often bliss and the project was tackled with enthusiasm.

Unfortunately, all 51 of the
gin’s cast iron ribs had been snapped off at the top and bottom, making it very
difficult to determine their original shape. The seed cotton feed chest was in
pieces and the sidewalls were completely missing. The major portion of the
gin’s wood frame was solid, although thoroughly riddled by boring insects, and
a few of the wood frame members had rotted to dust. The idler pulley, which
helps connect the saw and brush shafts and allows them to rotate in opposite
directions, was completely missing, its attachment arrangement unknown. All 21
brush sticks were nearly bare; the horse- or hog-hair bristles had long since
been eaten by mice. The few remaining bristles were too brittle to doff lint
off the gin’s saw teeth.

All 50 saws were present and
in good shape, except where rain had dripped through and eroded four of the 280
teeth on each saw blade. The 49 cast iron 3/4-inch spacer rings were all in
perfect shape, as was the large threaded nut that squeezes the saw/spacer stack
together on the shaft. The saws were terribly rusty, but after a wire brushing
and Scotch-Brite burnishing, they were slick, sharp and ready to go to work.
The input power pulley, made of a stack of 3/4-inch wood discs keyed to the saw
shaft and joined by three long wood pegs, is sturdy enough for continued use.

The two remaining critical
pieces of the feed chest front wall, which form the chamber that facilitates
the rolling of the seed cotton bundle during ginning, were broken apart but
usable. Cast iron pieces that had braced the edges of the front wall were
snapped in two. The missing upper half of these edge pieces carried the hinge
pins that allowed the wall to be lifted periodically to dump the seeds after
the fibers were ginned away.

Replacing these missing edge
pieces presented too much of a challenge, so an alternative method of
attachment had to be devised. The sidewalls of the feed chest, which were
completely missing, had picked up the hinge pins of the front wall, and were
separately hinged to allow the entire chest with the ribs to lift, exposing the
saws for maintenance. A “best guess” design based on geometrical constraints
was required.

Rib redesign

Replacement brackets were
fabricated from flat stock and screwed into place to re-form and stabilize
original sections of the seed cotton feed chest. Crude hinges were set to allow
the front wall to lift, exposing the saws and ribs. The missing sidewalls had
rested on top of the end ribs to seal the cotton inside the ginning space, and
the contour of each rib’s upper surface was carried all the way to the inner sides
of the main gin body, leaving a shadow on those walls. The shadow could be
traced, thus preserving the critical missing rib contour. Several remaining
inches of some of the lower rib stubs reached far enough above the attachment
tab to show the cross-section of the middle portion. The upper and lower rib
end tabs preserved the mounting hole spacing patterns, and both of the wooden
upper and lower rib attachment bars were present and in good shape.

With that design knowledge,
coupled with the extracted geometrical features, it was possible for my
brother, Curt Friday, Columbus,
Miss., to craft a wood pattern
duplicating an original rib. A double-check of the angle of the rib’s upper
surface at the gin point and angle of the saw teeth as they passed between the
ribs confirmed that the reproduction was accurate. Curt enlarged the dimensions
of the wood rib pattern to allow for 7 percent shrinkage of the molten iron in
the mold. Working with members of Alabama Art Casting, plans were made for
fabrication of a complete set of new cast iron ribs.

A trial iron pour at the
Soulé Live Steam Festival in Meridian,
Miss., in November 2011 provided
the correct dimensions for a subsequent set of 12 wood patterns. These were
packed into sand molds in January 2012 and a new set of ribs was poured at Tannehill State Park,
McCalla, Ala.
The entire process was great fun and instructive for the Flywheelers and the
Art Casters.

Unfortunately, very few of
these cast ribs were sufficiently true to form for completing a matched set, so
a new method was needed. A set of hot-rolled iron bars was procured and
machined to shape by Ray Ferguson, Harvest, Ala., using a CNC end mill. These
were bent using a peg-jig to the proper contour by Larry Lemmond, Hartselle, Ala.,
and inserted into the Star.

Keeping it authentic

All four shaft bearings were
present and in excellent shape. The lower halves are lined with babbitt bearing
metal, but not the uppers. Both the saw and brush shafts were straight and
sound. The brush drum was built with four pairs of wooden discs 11 inches in
diameter. The discs carry sections of galvanized metal to seal under the brush
sticks. Galvanizing of metal predates the Civil War, thus maintaining the
probability of a prewar manufacture date for the gin stand. Each disc has 21
mitred grooves around the perimeter measuring 5/8-inch by 3/4-inch to hold the
brush sticks. New brushes were ordered to specification and fitted with
high-strength plastic bristles. Those were nailed into the grooves and bound
with baling wire around each disc pair for extra strength, as was original
practice.

A spare pulley from
Flywheelers member Burton Marsh, Greenbrier, Ala., was incorporated into the
shaft power transfer mechanism as an idler, with a belt from an old peanut
plow, to make the saw shaft and brush shaft turn in opposite directions. This
allows the brushes to doff lint from the back sides of the saws and blow it out
the back of the gin. Though a bit crude, this fix worked fairly well.

And then there’s that color.
The gin body has a strange blue color (see photos in the Image Gallery) similar
to that seen on other very old wood structures, including an equally old cotton
gin similar to the Star owned by the Smithsonian Institution. An observer at
the annual Soulé Live Steam Festival identified the tint as “buttermilk blue.”
An Internet search turned up a description of dried buttermilk mixed with deep
blue synthetic ultramarine powder, an aluminum/sodium silicate mineral. A
source was found for the ultramarine powder. A mixture of these powders with
linseed oil will revitalize the gin color, including the new structural pieces.

The Star was demonstrated at
the Burritt museum Spring Farm Days, ginning cotton from recent crops grown and
hand-picked on Flywheeler Farm. The gin was powered by a 1948 Ford 8N. It
wasn’t smooth, and it wasn’t entirely efficient, but it worked, as witnessed by
Flywheeler Club members who were helping at the Burritt and 250 school children
on a field trip. This 160-year-old relic has come to life once again. FC

For more information:

— Retired scientist Bill
Friday, Huntsville, Ala., collects and restores old tractors,
grist mills, cotton gins, engines, pumps and tools. He is a member of the
Southland Flywheelers Antique Tractor & Engine Club. Contact him at bill.friday@earthlink.net.

— Southland Flywheelers Antique Tractor & Engine Club.

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