Bausch & Lomb Optical Co., Pat. Oct. 3, 1876, #2188

The Physician's model microscope (second form), c. 1883

Bausch & Lomb Optical Co., Pat. Oct. 3, 1876. Serial No. 2188. The Physician's model microscope (second form), c. 1883
Bausch & Lomb Optical Co., Pat. Oct. 3, 1876. Serial No. 2188. The Physician's model microscope (second form), c. 1883
Bausch & Lomb Optical Co., Pat. Oct. 3, 1876. Serial No. 2188. The Physician's model microscope (second form), c. 1883
microscope in case

This microscope is signed: Bausch & Lomb Optical Co. and marked: Pat. Oct. 3, 1876. The serial number, 2188, is stamped onto the inside of the storage case. It an example of the second version of the “Physician’s Model” The main focus is by rack and pinion. The fine focus utilizes the “frictionless” mechanism which is the subject of the 1876 Gundlach patent. The stage is made of glass and has a nickel plated slide carrier, the subject of the 1877 Gundlach patent. The microscope dates c. 1883. The mirror housing and aperture wheel are made of hard rubber. With later versions of this model hard rubber was replaced by brass.

patent

Gundlach patent Dec. 25, 1877

patent

Gundlach patent Oct. 3, 1876

The B&L Physician's model microscope evolved over time. The microscope shown here is the second form. In this collection are examples of the first form and the third (final form).

 


 

The Bausch & Lomb factory in 1882:

Works of the Bausch & Optical Co.

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