Tag Archives: concrete

Elevator investigations move farther afield with a side trip to Alta, Iowa

by kocart
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The trademark rounded headhouse identifies the Tillotson elevator, shown here behind the office and truck scale.

Story and photos by Kristen Cart

It is getting harder to visit our grandfathers’ elevators. All of the elevators within a half hour either side of the I-80 corridor have already been exhausted, so a stop for photography requires real planning and extra gas, time, and effort, even when piggybacked on our normal family visit to Nebraska.

The trip to Alta, Iowa, required just such an extra investment in driving time. The town and its Tillotson elevator is just north-west of Storm Lake in the northwestern corner of the state, and is not, quite frankly, on the way to anywhere.

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The Tillotson elevator in Alta, Iowa, where the old structure is mostly obscured by later bins.

I wonder how our kids put up with it. This trip in particular required over an hour’s northward jaunt before angling generally east-northeast, with a 30-minute divot or two along the Nebraska-to-Illinois route. Each detour took in wayward sites, including Alta.

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A look up the rail line opposite the Tillotson elevator revealed the historical trappings of town, with a backdrop of new grain bins.

It is normally a 10-hour drive to get home from visiting their grandparents, but this elevator excursion would tax my children’s patience for several more hours. To be fair, we got an extra early start. But that meant the serious backseat fidgeting would start sooner.

You would think that I would study Tillotson records first, and inject some discipline and efficiency into planning our route.

But no, that task was left for after the trip, so I could see how closely we approached several sites without seeing them.

I don’t think the kids minded the near misses–but they’ll get to see the countryside again when we go through to mop up the strays.

 

The Tillotson elevator in Hinton, Iowa, is fully upgraded to fulfill today’s mission

by kocart

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Story and photos by Kristen Cart

The Hinton, Iowa, grain elevator, anchoring the eastern verge of town along U.S. 75 in western Iowa, looks very little like it did when it first rose in a continuous pour over the flat surrounding farmland. Conveyors and legs and platforms stick out at odd angles from the headhouse–distribution central for the sprawling complex of elevator, drier, and annexes. The long row of grain storage bins and equipment deeply overshadows the eastern side of the highway, which zips past the center of town without a nod to the businesses along the main streets to its west.

An elevated conveyor crows in red lettering, “Floyd Valley Grain, L.L.C.,” where it may be easily read from the road. To drive the point home, two dedicated locomotives parked upon the nearby rails are painted bright red in the company colors and sport the company name. This cooperative, the advertising seems to say, is the true center of town.

DSC_6412Innovation and modernization bristle from every side of the old Tillotson elevator. The externally installed legs (the parts of an elevator that lift the grain during the loading process) are a later modification taken to prevent grain dust fires: the moving parts that may heat up, such as bearings and motors, are no longer confined in an enclosed space with combustible grain dust. The various conveyors connect to newer annexes that were built when the storage demand outgrew the original elevator. The entire complex has become a far greater enterprise than our grandfathers, builders of the original structures, ever envisioned.

I paged through the Tillotson Construction Company records, preserved in handwritten and carefully photocopied pages, looking for the building specifications for the original Hinton elevator. Unfortunately they were not preserved with the rest. But we know it is a Tillotson elevator from a news item about an accident at the construction site where a man fell to his death in 1954. Perhaps records pertaining to the subject of a potential lawsuit were not with the rest of the file.

The elevator follows a well-tested design, and like the majority of the later Tillotson elevators we have studied, it still serves. It is a fitting testament to the engineering pioneer that was Tillotson Construction Company.

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How to build an elevator: Jerry Osborn’s firsthand account from Blencoe, Iowa

by kocart

Story by Jerry Osborn and photos by Kristen Cart

The summer of 1954, before my senior year, I started working at the Hormel plant again, but after a few weeks my dad asked me to work on the elevator his company, Mayer-Osborn Company, was building at Blencoe, Iowa. This would be a different experience. Since I had no transportation of my own he took me to Blencoe and set me up in a motel near the site. He also took me to a shoe store to buy work shoes so I would be set to go to work. The wages weren’t great. They were $1 an hour just like all the other grunts on the job. No nepotism on this job. My job was to select the correct steel and see that it was laid properly as the slip forms were filled and jacked. Fortunately, I had enough engineering drawing work that I could read the blueprints. The slip operation had just begun when I arrived, so it was learn-on-the-run for me.

Things seemed to be progressing nicely until we were about twenty feet in the air. At that point it was noticed that some of the exposed concrete was crumbling and falling to the ground. This can’t be good. The operation was shut down immediately to determine what the problem was. It became obvious that the mix ratio of cement to sand and gravel was too low. The work to that point had to be torn down. The demolition was done over the weekend, and we were setting up to slip again on Monday. The concrete was mixed on the job and the appropriate mix weights were to be locked into the scales. Somehow the proper amount of cement was not designated. My brother, who had been on a lot of these jobs, was a supervisor on this job and should have checked the setting for the proper mix.

When operating properly, the concrete was mixed next to the elevator; each mix was dumped into a bucket hoist, which was lifted to the deck level. The mud was fed into two-wheel mud buggies. The buggies were then wheeled to and dumped at the place needing concrete. As this process took place another mix was in process, so when the hoist bucket was returned, it was once again filled and the whole process was repeated over and over until a height of more than 100 feet was reached. As the forms were filled, steel was laid and other features such as portholes were laid in place as the forms were jacked upward, exposing freshly set concrete at the bottom of the forms and providing more space at the top for more mud. A scaffold was built below but connected to the forms so men with trowels could smooth the fresh concrete as it was exposed below.

I had hoped to work until the slip was finished, but the restart didn’t leave enough time prior to football practice.

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