Alexander K. Rider
Esteemed Inventor and Freemason

Alexander K. Rider
Alexander Kirk Rider, a lesser-known Masonic figure, was a man who possessed a brilliant mind. He was a skillful engineer who turned inventor, and, during the U.S. Civil War rose to prominence. Rider not only played a significant role in manufacturing parts and equipment for the ironclad warship USS Monitor, but also would run the largest and most successful hot air engine enterprise in the world.
In 1845, after marrying Isabella Jones, Rider would devise new sweeping propeller wheel molds, which helped develop a truer screw. Porter said “the works became famous for their propellers and probably cast more than all the other foundries put together.” Rider soon became a foreman of the foundry in 1850, when the company re-established as the DeLamater Iron Works. Formed by Cornelius H. DeLamater, a Rhinebeck, New York native, the company became a phenomenal success and Rider was placed in charge of its entire foundry, where he began to design and invent engine patents for steamships.
In 1861, due to the Civil War, the United States government contracted DeLamater Iron Works to build ironclad warships for the Navy. DeLamater partnered with John Ericsson, a Swedish naval engineer and inventor who, upon approval from President Abraham Lincoln, began constructing the USS Monitor. It was a new concept in design that employed a variety of inventions which earned the attention of the maritime world. The impetus to build the Monitor was the development of the iron-plated CSS Virginia for the Confederacy, news of which prompted Ericsson to pen a letter to Lincoln.
In his correspondence to the president, he wrote: “having introduced the present system of naval propulsion and constructed the first screw ship-of-war, please look carefully at the enclosed plans.” Because of the ship’s low-profile, he added “I cannot conclude without respectfully calling your attention to the now well-established fact that steel-clad vessels cannot be arrested in their course by land batteries” and “our great city [Washington, DC] is quite at the mercy of such intruders [Confederates], and may at any moment be laid in ruins, unless we possess means which, in defiance of Armstrong guns, can crush the sides of such dangerous visitors.”
Though physically debilitated from an earlier occupational accident sustained in the foundry, Alexander Rider, who developed many models for Ericsson’s projects, may have been involved directly in the engineering process of the USS Monitor. It is believed that Rider’s cut-off valve patent in late 1861 was used during the ship’s construction. At the time, both Rider and Ericsson were highly touted steam engine inventors, who later would exclusively partner in a company that would revolutionize America.

Rider, who kept his permanent residence in New York City, relocated in late 1861 with his son Thomas to Hydeville, Vermont. As Rider recovered from his lingering work-related injury, it was in this small mill town where he would continue to devise new patents to improve his hot-air engine model.
Chartered in 1852, and named after Colonel Noah Lee, a hero of the American Revolution, Rider became a member of Lee Lodge 30 F&AM in Castleton, Vermont. The lodge was long-admired for its brotherhood, philanthropy, and strong patriotic spirit.
Upon the close of the Civil War in 1865, Rider returned with his son to New York City and resumed collaborating with Ericsson at DeLamater Iron Works. In 1869, Rider invented a molding screw for propellers, and, in 1871, patented an automatic cut-off for steam engines, which improved upon Ericsson’s aspirating air engine. In addition to Rider, DeLamater took a special liking to his son Thomas, who proved to be a great addition to the operation. Rider would design; Thomas would render the drawings.

His son, Thomas J. Rider, also joined Wallkill Lodge and was raised to the Sublime Degree of Master Mason on May 16, 1876. He was appointed Senior Deacon and occasionally sat as an acting Warden.

In 1872, with Rider’s hot air engine model in demand globally, he removed with his entire family to Walden, New York to form a partnership with George C. Wooster, named Rider, Wooster & Company. A large brick and mortar foundry was built with towering steam stacks along the active Wallkill Valley Railroad on 29 Grant Street and proved to be a perfect location for distributing the highly sought after engines to market.
Known for its abundant and highly successful knife factories, Walden in the 1870s was a blue collar town that offered membership to several fraternal orders, such as the Odd Fellows, Knights of Pythias, and Wallkill Lodge 627 F&AM, of which business partner Wooster had been a loyal member since 1872.
After embracing his fraternal pride once more, Rider decided to affiliate with Wallkill Lodge in 1874. He elegantly signed his name on the rolls, and enthusiastically joined the likes of Thomas W. Bradley (president, New York Knife Company), James Kidd (gristmill and tavern owner), and Charles D. Wooley (inventor and soap manufacturer) as Masonic brothers.

In 1897, the company reorganized as the Rider-Ericsson Engine Company but, in 1939, closed its doors and dissolved, making Rider’s company the longest-lived manufacturer of hot air engines the world has ever known.
Alexander K. Rider, who during his lifetime obtained more than 35 patents, was buried in an unmarked grave in the Wallkill Valley Cemetery in Walden, New York. He will be remembered forever as a brilliant inventor and accomplished brother of our ancient and honorable Free and Accepted Masons.
Bro. Williams, a collector of New York Masonic history, is Worshipful Master of Wallkill Lodge 627 in Walden, New York, where he also is lodge Historian.
