Adjustable Structural Supports Since 1951.

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Kick Brace for Concrete Forms
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Slip-On Guardrail Bracket
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QuickRail Parapet Guardrail
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Flat Plate Top For Light Duty Steel Shores
Flat Plate Top For Light Duty Steel Shores
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Lumber U-Head for Light Duty Steel Shore
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Lumber U-Head for Light Duty Steel Shore
$58.75
Pivoting Flat Plate Top For Light Duty Steel Shores
Pivoting Flat Plate Top For Light Duty Steel Shores
$33
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Flat Plate Top For Heavy Duty Steel Shores
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Lumber U-Head for Heavy Duty Steel Shore
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Lumber U-Head for Heavy Duty Steel Shore
$66.25
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Pivoting Flat Plate Top For Heavy Duty Steel Shores
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Twist-Lock Guardrail Bracket
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Twist-Lock Guardrail Bracket
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$7.88
Wedge Chains Links For Scissor Column Form Clamps
Wedge Chains Links For Scissor Column Form Clamps
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Wedge For Single Bar Type Column Form Clamps
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1" Steel Adjustment Rods
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1" Steel Adjustment Rods
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Joist Spacer
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10K/11K Leg Shore Frame Leveling Screw Jack
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10K/11K Leg Shore Frame Leveling Screw Jack
Based in the USA Based in the USA
Founded in 1951 Founded in 1951
Patented Products Patented Products
Knowledgable Customer Support Knowledgable Customer Support

History of the Ellis Shoring System and Ellis MFG Co.


It All Started With a Challenge

In 1948, Navy pilot and golf enthusiast L.S. "Gunna” Holmboe Jr. graduated from the University of Oklahoma with a degree in Business.

Eager to get to work, he started working with his father L.S. Sr. as a maintenance director for 200 rental units. Realizing it was only busy work he soon grew tired of the simplicity of the job and started looking for something more challenging than fixing roofs and mending fences.

L.S. Sr., seeing his son's dissatisfaction, came up with a new project -- to simplify the manufacture of wooden shores using metal clamps. This new product would eliminate the time spent measuring and cutting lumber to support the formwork for pouring concrete and L.S. decided to call this "The ELLIS CLAMP,” so named for "L.S.”

Just two Ellis Clamps and two pieces of lumber would allow a totally adjustable shore, saving time and money in his construction business. He went to his son with a $10,000 loan and a proposition – sell the Ellis Clamps and see what comes of it.

"But if you go in the red, you can forget it,” he said.

L.S. Holmboe Jr. would never forget, needless to say, because the Ellis Clamp took off like a shot. From his basement, L.S. Jr. worked to create the clamps using a machine he designed himself and soon he hired an assistant to help. It was far from the last hire the company would make.

Before long, L.S. hired his assistant and a welder to work for him full-time and designed another machine to bend the metal into a rectangular shape. Though his first order was small by today’s standards – only 200 – it put him hard at work and in just a week, the Hughes Construction Company had their Ellis Clamps. They were happy to have the product, and they weren’t the only ones who saw the exciting future offered by the clamps.

L.S. Holmboe demonstrating the use of an Ellis Shore and Ellis Jack

"I sent out some sales literature and received a lot of interest." he said. "Including that of my father."

L.S. Sr. saw the value in what his son had created and asked his contractors up North to take a look. The orders increased and soon enough, L.S. Jr. was hiring more men, renting more space and rolling up his own shirt sleeves to keep the orders filled. His father set up distributors in several cities, with many contractors placing orders of 1,000 at a time – a big leap from the basement.

"Our first large order was from a big contractor named Volpey Construction in Malden, Mass.," he said. "This was a big step, to make 2000 clamps in two weeks."

Now that orders for Ellis Clamps were on the rise, so much so that men worked two shifts daily making clamps, L.S. Sr. started the Ellis Equipment Company, which would later become Ellis Manufacturing Company, Inc, in 1951. Response for the clamp was so positive that father and son decided to invest in a patent for their invention, specifically allowing only Ellis Manufacturing Co., Inc. to legally make the Ellis 4x4 Shore Clamp with only one weld.

Ellis Manufacturing Co. original building after construction in 1956

In 1956, a new headquarters was built at 4803 N. Cooper Ave. in Oklahoma City to house the burgeoning enterprise. Sadly, before it was completed, L.S. Sr. passed away. Thankfully, he lived long enough to see his dream of operating a family business to come true. And L.S. Jr. stayed true to that dream, bringing his first son, Brent Holmboe, into the business in 1973. Brent is now Vice President and responsible for operations, increasing productivity and expansion of the Ellis Manufacturing line of products.

Ellis Manufacturing Co., Inc. currently ships shoring and concrete forming materials to all 50 states, and looks forward to new challenges in the demanding business of commercial and residential construction, mining and search and rescue industries.

Over the years, the Ellis product line has grown significantly. In addition to the Ellis Shore Clamp, the company has patented and offers other products as well.  The Heavy Duty Steel Shore is the latest patented addition to the Ellis line.  It's ability to combine jacking and shoring into one product is unlike anything offered in the construction industry.  The company also offers a large selection of other shoring products for light or heavy load applications ranging in heights from as short as 6.5" to over 20' tall.

Innovation is the key, Vice President Brent Holmboe said. Ellis is dedicated to improving their existing products, developing new tools, ideas and products for customers and continuing a legacy of excellence for the construction industry.

In addition, as a small, family-owned company, Ellis can stay adaptable in their focus on customer satisfaction.

"We listen to our customers and develop solutions that are job specific", President Clay Holmboe said. "Not only do we offer standard shoring, forming, and guardrail materials, but we can also customize products to fit specific needs of our customers."

Using on-site punch presses, iron workers and welding machines, Ellis has the ability to quickly manufacture standard and customized products. Ellis has also established relationships with manufacturers in other countries to offer imported products and materials. And since Ellis owns their own building and all of the equipment, they can operate with low overhead costs and offer its customers quality products at reasonable prices.

In business since 1951, Ellis has 65 years of experience and expertise to offer customers.

On April 20, 2005 at the age of 81, after months of health complications, and surrounded by his family and friends L.S. "Gunna" Holmboe Jr. passed away. Gunna will always be remembered for having an incredible sense of humor and an exceptional love for his family and friends. His contributions to this company are unprecedented and he will forever be missed.

Thank you for reading and learning more about the history of our company. For more information please call 1.800.654.8311 or Email Us. Ellis Manufacturing is located at 4803 Cooper Avenue in Oklahoma City, Okla.

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