In 1863 the firm was purchased by John Marder, a bookkeeper for the firm, and David Scofield, Marder's father-in-law who was also an employee of the foundry.
In 1863 the firm was purchased by John Marder, a bookkeeper for the firm, and became Marder, Scofield, and Toepfer. John Collins, Marder's father-in-law became a n early partner of the foundry.