Prevent Injuries. Increase Productivity.

Arnold Company proudly manufactures the Door Demon® line of railcar openers, hopper trailer
openers, and vibration solutions; American-made options designed to
improve safety and productivity.

Arnold Company News

How to Open Hopper Trailer Gates Safely

Learn step-by-step how using the Door Demon® Hopper Trailer Opener (HTO) not only makes the job of opening hopper trailer gates or traps safer, but easier and more efficient. Key features of the HTO The HTO motor...
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Unload Grain Trailers Safely and Efficiently During an Active Harvest

During an active harvest, speed up the unloading process while improving the safety of your operators using our air-powered Hopper Trailer Opener and Vacuum Mounted Vibrator equipment combination.  Unload Grain Trailers Safer, Faster, and Easier Unload grain...
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Case Study: Prevent Boxcar Damage and Improve Safety

Concerns over improving operator safety and preventing boxcar damage lead a Florida-based food manufacturer to equip 7 facility locations with the Door Buster Combination Boxcar Opener. Safer for Operators, Easier on Boxcars   Oftentimes on aging boxcars,...
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Durable Solutions for Challenging Unloading Tasks

Prepare your operators who face repetitive, challenging unloading tasks with durable equipment that gets the job done safely and improves productivity. Using unreliable unloading equipment can make the job of material receiving much more difficult than necessary....
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New Ride-On Railcar Hopper Gate Opener Designed for High-Volume Applications

Open hopper gates safely and efficiently in high-volume railyards using the brand new and highly automated Ride-On Beam Mounted unit. The Evolution of the Multi-Position Hopper Gate Opener The original Multi-Position flagship unit includes an electric over...
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The Evolution of the Hopper Trailer Opener

Find out how changes in the grain industry increased demand for the Hopper Trailer Opener, the world’s first handheld, powered grain trailer opener. Introducing a Safer Solution to Help Solve Common Industry Challenges Prior to the introduction...
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Arnold Company:
Our Commitment to You

Albert B. Middeke Jr.“With safety and productivity always in mind, we take pride in our product selectionproduct qualityshort lead times, and personalized customer service! We offer our customers safe solutions to their Hopper Gate and Boxcar Opener needs, and we stand behind our products!”

Albert Middeke, President Arnold Company

Clients Served
Customer Testimonial
"Everyone was very courteous, helpful and the response was quick. Delivery time has excellent, it is certainly a joy to with an organization such as yours."
W. McCawley
International Paper