An Unexpected Finding
I initially thought this item was some kind of gauge, perhaps an 1800s steam gauge. Its little side pin, twelve numbered tabs, and weight all pointed to a measurement apparatus. However, everything changed when I saw the words “PATENT 1863.”
It wasn’t even a gauge. It was a W. Hall brass combination lock that was patented in Boston during the Civil War in 1863. The design of the lock made perfect sense and became much more intriguing once I understood this.
What This Lock Is
W. Hall received a patent for the combination lock on January 6, 1863, under the number U.S. Patent #37,290. It is a little lock made of solid brass that is intended to secure small objects like travel cases, trunks, and lockboxes. It was intended to be attached to an object rather than integrated into it, as evidenced by the loop on top.
This technology does not require a key or revolving dial, in contrast to contemporary combination locks. Rather, it uses twelve flat brass tabs that can slide or rotate slightly and are numbered. Every tab has a notch within. The internal bolt can move when all of the tabs are properly positioned and the notches line up.
The lock remains closed and secure even if one tab is misplaced.
The Mechanism’s Operation
The perfect alignment is the only way the lock works. Neither gears nor springs are present. The tabs’ placement is the only way the combination is present. Tension is applied by a side pin until the tabs align correctly.

The 1863 W. Hall brass combination lock is so remarkable because of this. The lock is entirely dependent on precise manufacturing, and brass is not very wear-resistant despite its durability. That’s why a lot of these locks are still in good working order today.
I flipped the tabs back and forth for a long time. You have a tactile sense of alignment, knowing when you’re getting close and when you’re not.
Details and Markings on Patents
The lock has distinct markings that match the patent records: “W. HALL” and “BOSTON.” Although there are no records to support it, the “38” near the top might be a model or production number.
The structure of the lock precisely meets the patent’s description of a small, portable lock for personal safety. It has no ornamental or unnecessary aspects and is completely practical.
Why It’s Frequently Mislabeled
The lock initially looks like a wire gauge or measurement tool. Its twelve numbered tabs resemble gauges of thickness. Most individuals miss the mechanism’s actual function if they don’t understand it, which frequently results in mislabeling.
The design becomes clear and sophisticated once you understand how it operates. It looks like a mechanical puzzle up until that point.
Interest of Collectors
An initial step toward combination-based security is represented by these locks. The combination only existed in the user’s head because there was no key.
The 1863 W. Hall brass combination lock is prized by collectors due to its durability, mechanical innovation, and historical relevance. The metal gets a deep patina with time, yet the lock still works, which is not common for antiques.
It also acts as a reminder that 1860s goods were made to last. This lock was made to function consistently, not to be replaced.
Concluding remarks
The lock may not seem noteworthy at first. But it demands respect once you know what it’s for. The 1863 W. Hall brass combination lock, which is small, accurate, and still completely functional over 150 years later, is an example of skillful design and craftsmanship.
It doesn’t have to be visually striking. It continues to function flawlessly and precisely as intended. That demonstrates that W. Hall was correct the first time.






