Monday, September 25, 2017

Ribs and Miscellaneous

Ginning season is right on us, and some of you have already started, especially in South Texas.  Some of the crops may come in earlier than expected in the southern states as well.  Vandergriff Inc is already running ribs for export right now.  We have big orders to fill.  As soon as we complete this run, we will jump right in to making ribs for the USA market.  Most of you know that to make a Vandergriff Rib is very time-consuming.  From forgings we acquire (From 1018 USA steel) to CNC Machining each rib.  This is why its important to get your orders in as soon as possible. Even now  is not too early for the USA market.  When we order forgings, we can include your order and you will get yours in early spring.  Orders placed right after the first of the new year also have a good chance of delivery in early to mid-spring as well.  We now manufacture several models of ribs for different type of gin stands and this adds to time of production.  If we were running one particular model of rib, we could just let it roll.

We make ribs for:

Consolidated Gin Stands
Lummus Gin Stands
Cherokee Gin Stands
Continental Gin Stands

Our ribs are made in the USA.  Our competitors are for the most part, made in China, India or Pakistan.  There is no comparison in performance. Don't let your huge investment in a gin stand have its performance affected by inferior gin ribs.

We have a lot of our Jet Dryer installations running this season, along with many others that have been running for many years now. Cost effective drying.  I have written other blogs on this. Check them out.

We have a couple of other products hitting the ginning market soon.  Keep your ears to the ground and check here every so often. You will be hearing about them. :)

Jet Dryers

Vandy Ribs for Consolidated Gin Stands

Vandergriff Ribs shipping out for export.
Made in USA on boxes.

"Products of Vandergriff Research"

Wishing you a great season. We appreciate all our customers world-wide.

Wednesday, September 20, 2017

Ribs, Misc

Consolidated 164 Gin Stand

"A Product of Vandergriff Research"

These Consolidated Stands are "Built Tough." There are still a lot of them on the market ginning.  Not only 164's but 198's and 116's.  Our rib can most certainly can help this stand, and has helped it.
Don't tolerate ribs that are not straight, that tag and cause rib fires.  That misery alone will quickly pay for a set of Vandergriff Ribs.  Ours are CNC machined from 1018 steel.  Accurate. Straight. Vandergriff design.  Proven.  Purchase ours and let that stand gin. Worry about other issues in your gin plant.  We also have Vandy Ribs for their 184 and 222 saw models.  They have run. They have ginned. They are proven.  If you want some Vandy ribs get on the list ASAP. It is never too early to call.  This is the same for all models of our ribs. It is never too early to call and get on the list.

We hope your season gets off to a great start.  Gin that cotton! Hope to see you down the road.

Loyd Vandergriff

Thursday, September 7, 2017

Late Summer Updates

Cotton is planted, and on a still night if you listen close enough, You can hear it growing.

Does this dryer look familar?

Continental Gin Company Counterflow Dryer 1950's
Note Cylinders at Bottom.

There seems to be a renaissance for this type of dryer, followed by large amounts of cylinder cleaner arrangements. This is a little history of this type of drying and why it ultimately faded. This information is taken from "Ginning Cotton, An Entrepreneur's Story," By A.L. Vandergriff. Pages 209-210.

Continental Introduced a counterflow dryer in the 1950's. It  was a unit consisting of a vertical box with spiked cylinders mounted inside in a vertical row, along the centerline of the box or chamber.  Adjacent to the cylinders on each side were long metal strips mounted on the wall of the box, spaced so that air could flow between them.  The cotton entered to top of the box by gravity onto the first cylinder, which knocked it onto the metal strips. These metal strips were sloped downward so the cotton could slide down them to the next cylinder. This process was repeated from one cylinder to the next. I believe there were four of these cylinders in the stack. Heated air entered the bottom of the box and traveled upward against the flow of cotton, thus the name counterflow.  Once I began increasing the capacity of the plants, it became necessary to split the flow and in doing this I added Tower Dryers, placing the counterflow dryers in series and following the Towers. This was done to primarily make use of the three cylinder cleaner under the counterflow dryers.  Currently, it is important to note deficiencies with the counterflow concept here and why and actual dryer had to be added prior to.  These dryers were never efficient. The fiber to fiber exposure to heated air was not as good as that in the Tower Dryers.  It seems that none of the drying efforts that tumbled cotton in bulk were efficient.  

We at Vandergriff American like to expose the cotton to drying and conditioning before getting into any type of cylinder arrangement, and we like to keep fiber exposure to any mechanical action (cylinders) to a minimum.  The action in our Jet Dryer requires no cylinders or any type of mechanical action. We create what we call a natural dynamic.  The cotton is conveyed to the top of the dryer in a  single stream and hits the top of our Jet, which is cylindrical. It then fans out in a 360 degree arc and begins its descent down the sides engaging the upspream flow of cotton. This dynamic creates turbulence and a swirling action that begins to single lock the fibers to allow warm air to flow through, and trash to begin to separate out.  It then exits out to the inclines or cylinder arrangement most gins currently have.  We get a nice even flow and even bat that allows the cotton to spread nicely across all the cylinders.  There is no need to add a horizontal cleaner arrangment with this. You can use what you have. If you are installing Jets in a new plant, the horizontal cleaner will work fine if this is the route you choose to go. There is mimium static drop with our system compared to a large number of cylinders that the cotton would be exposed to with a counter-flow/vertical flow type system. Remember, these systems start the drying process with cylinders involved.  All are in agreement that it is not desirable from a fiber quality point of view to let cotton be exposed to lots of cylinder's and too much aggressive mechanical action to dry and clean. Also note that with these counter/flow, vertical flow type "dryers," followed by a large number of cylinders, there is a real danger of roping and trash being embedded if this 1950's approach does not get the moisture content of the cotton down enough prior to entering the cylinders. Big risk here.  How much do you want to "slow down," on wet cotton to keep fiber quality up?  Our Jet's will work with your existing 8', 10' and even 12" cleaners in both stages of your operation. So, what you get with our system is a good drying dynamic without excessive cylinder exposure. It preps and conditions the cotton nicely and allows your existing cylinder cleaner arrangement to work more efficiently in terms of fine trash removal.  

"Don't let your cotton fiber be exposed to an excessive amount of cylinders, and then be run through 2 stages of "Shredders," (lint cleaners) before getting to the press.  The Fiber and the mills will appreciate you.