Glenny Glass Celebrates 175 Years in the Glass Industry

Above: The exterior of the Glenny Glass facility in Milford, Ohio. 

The entryway of the Glenny Glass Co. facility in Milford, Ohio, features a painting depicting the company’s 19th-century origins; a horse-drawn delivery wagon sporting a full A-frame rack of flat glass. Founded in 1851 by William Glenny, the Cincinnati-based glass fabricator celebrates 175 years in business this year, which owners say make it the oldest continually operating glass fabricator in the U.S. With a 107,000-square-foot facility and 12,000-square-foot decorative glass division, as well as their own delivery trucks, it’s clear the company has come a long way since its founding. 

Family-driven success and succession-planning 

According to a company history published during Glenny’s centennial in 1951, the business was a family affair from the beginning; William Glenny founded the glass business in partnership with his father Samuel, a university professor. While glass was almost exclusively imported from Europe at the time of the company’s creation, Glenny played a role in the development of domestically produced plate glass by funding the innovations of John Ford, who would later go on to found the Pittsburgh Plate Glass Co. with John Pitcairn. 

The Glenny family’s ownership of the business lasted until 1989, when the company was bought by Rufus Smith and his son, R. Braxton Smith. Now the company is transitioning to the next generation of the family, Braxton II and Joseph Smith, who both grew up with the business and worked at the company in high school. “We’ve been a part of it our whole lives,” the brothers said in an interview at their Milford facility. “It gave us pride in what we do, growing up in it.”  

The brothers attribute much of the business’s longevity to its family ownership, specifically the stability it’s able to afford. “Business in this area is relationship-based, and we’ve built trust over the years through our partnerships,” says Joseph. The company currently serves a five-state region, and has recently expanded service to Nashville, Tennessee.  

While Braxton Sr. will continue to provide the company’s business vision, the two brothers are now stepping into greater management roles. To prepare for this transition, Joseph and Braxton took classes at the University of Cincinnati’s Goehring Center, which offered guidance in succession planning. “It was a chance to talk with second-, third- and even fourth-generation families and get advice on their processes,” Braxton says. The course also helped the brothers outline a five-year plan for them to transition into a greater role managing the day-to-day business operations. 

Joseph and Braxton also credit the long-term employees at Glenny in helping support the transition by playing a crucial role in their training. “There are people working here a long time, over 30 years, who were mentors to us,” Joseph says. The brothers in turn attribute the length of Glenny employees’ tenure to the family culture the company has built. “Our valued employees are the single most valuable assets we have,” they say. 

Major milestones and next steps 

Originally located in a five-story building on Cincinnati’s downtown riverfront, Glenny Glass relocated to a Blue Ash facility in 1968 after its original building was demolished to make way for Riverfront Stadium. The company later moved from Blue Ash to its current Milford, Ohio, location in 2006. The next major milestone was in 2016, Braxton says, when the company doubled in size and added automation and machinery, including a gantry system, a second cutting line, as well as tempering and insulating glass lines, all connected with FeneVision software. They’ve continued to invest in automation over the past few years, and at the time of my visit, were in the process of setting up their new Glaston thermoplastic spacer line, slated to be operational as of February 2026.

Braxton says the company plans to continue investing in machinery. Other next steps include expanding their reach to new customers in their service area and growing further in the commercial market as well as the window and door manufacturing sector. “We’re looking for conservative, steady growth,” he says. Glenny will be celebrating its 175th anniversary with an open house followed by a Cincinnati Reds game for 185 of its customers in June.