Waltham Crescent Street Model 1870: Deconstructed Parts A look inside Waltham’s Model 1870 Crescent Street, Serial Number 690511. Notice how each plate is marked with matching numbers to ensure proper.
Waltham Crescent Street Model 1870: "Woerd's Patents" Marking What do most artists do when they finish a work of art? They sign their name to it, of course. The same.
Waltham Crescent Street Model 1870: Square Impulse Jewel As evident in previous posts, Waltham’s Model 1870 Crescent Street is full of innovative advancements from the mind of Charles Vander Woerd..
Woerd’s Patent Regulators from #550,233 and #690,511. Around 1872, Waltham modified the original regulator design on the Model 1870 Crescent Street, adding another arm to distribute the force against the adjustment wheel.
Waltham Model 1870 Crescent Street (18-Size, 15 Jewels, Button-Set) [Regulator Image] [Regulator Image] Every Waltham Model 1870 Crescent Street movement features Charles Vander Woerd’s patent micrometric regulator, allowing precision changes.
Waltham Model 1870 Crescent Street (18-Size, 15 Jewels, Button-Set) [Patent Illustration] The patent issued to Charles V. Woerd on August 13, 1867 for his setting mechanism design was never implemented.
