Episode 3 of 3

Patent for Sealing Glass Images

When: July 11, 1854
Where: United States
Part of: James Ambrose Cutting patents improvements to the wet collodion (Ambrotype) process

Cutting received US Patent 11267 on July 11, 1854, for a method to seal collodion images on glass using balsam.

This patent described a method for sealing finished collodion images beneath a layer of glass using balsam. This technique became known as Cutting's Patent Ambrotype, distinguishing it from the earlier patents which covered chemicals and handling.

Sources

James Ambrose Cutting Wikipedia, revision of 2026-07-16

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.