The Vandergriff Gin Rib

The Vandergriff Rib was designed by Mr. A. L. Vandergriff. It is precision-machined by Mr. Chris Nachtmann of CNC Performance Engineering located in Lincolnton, North Carolina. Chris and his family have been manufacturing this rib for Vandergriff Inc. for 14 years.  

Mr. Vandergriff had extensive experience with gin rib design while doing research for the improvement of cotton gin stands, primarily in the area of increasing the capacity. He always found them to be a bottleneck.  Over the years, as he increased the capacity of the gin stand the limitations of the gin rib became more and more apparent.  Most gin ribs were and are made from “castings.”  read more

Welcome to Vandergriff Inc., headquartered in Clovis, California.

The daily operations of the company are run by Loyd Vandergriff, son of the company founder the legendary A.L. Vandergriff. Vandergriff Inc's current product line is the Vandergriff Gin Rib, and the Jet Dyer. More detailed information related to products Vandergriff Inc. offers as well as biographical information on Mr. Vandergriff can be found through-out this site. Vandergriff Inc. prides itself in providing quality products to the industry that reflect the standards established by its founder, A.L. Vandergriff.

Vandergriff Inc. News, Winter 2012

2012 Projections:
April 1, 2012 is last day we are accepting ribs orders of the 2012 season.
Get your orders in ASAP!

New Gin Rib:
Our new 181 gin rib tested at Namoi in Australia exceeded our expectations. They converted a 161 saw gin to 181 saws based on  saw spacings Mr. A.L. Vandergriff used at Elbow Gin in 1995. At that time, he converted a Continental 120 saw frame to 182 saws, the narrowest in the industry. This ran for years in relative obscurity as most "experts" chose to ignore this narrower saw spacing and its potential for higher capacities and better turn-out.  Fast forward to 2011 and besides the "Namoi" 181, we also have the Consolidated 222.  This is simply a 198 narrowed down the Vandergriff 182 spacings.  The Namoi 181 has reported capacities as high as 22 bales per hour.  We made a minor tweak in gin rib design. We are making more for next season, as they will convert the rest of their 161 gin stands to 181 saws for obvious reasons.

Vandergriff / American Jet Dryer

Mr. Vandergriff has always been involved in developing drying systems that incorporate the use of slippage, turbulence and air temperatures that remain constant through-out the drying cycle. These concepts are of course incorporated into the Jet Dryer. He actually began experimenting with the Jet Dryer while in charge of research and development at Lummus.  He re-visited this entire concept of drying in the late 1990’s. The dryer is basically a cylindrical cone that gently tapers from the bottom to the top of the dryer.  The diameter increases as you move up the dryer.  Cotton is introduced into the dryer through a special inlet design that creates a high velocity stream which conveys the cotton towards the top of the dryer.
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