Signed: Geo. Wale, Patent June 6, 1876

Monocular microscope with fusee chain focusing

George Wale Microscope, Patent June 6, 1876

George Wale Microscope, Patent June 6, 1876

The main focus of this microscope utilizes a fusee chain mechanism. The microscope can be reversed on its base.

George Wale Microscope, Patent June 6, 1876 substage


George Wale patent June 6, 1876       


George Wale Microscope, Patent June 6, 1876 patent image

George Wale Microscope, Patent June 6, 1876 advertisment


George Wale Microscope in case

Engraved on the inset brass handle of the case is the name of the original owner, C.J. Svehla

George Wale was born in the U.S. in 1840 from parents who emigrated from England. He initially worked with partners. There are known instruments signed "Hawkers & Wale" as well as those signed "Morrison & Wale". By the late 1870's he was working alone.

The following was extracted from: Practical Hints on the Selection and Use of the Microscope, by John Phin, 1877

George Wale microscope

CONTINENTAL MODEL. As made by Geo Wale, Paterson. N. J.

The Continental Form.—Most of the stands made by the better class of French, German and Austrian microscope makers are characterized by a low, compact form, and great simplicity and solidity of construction. Our engraving, Plate I, shows a very serviceable instrument, manufactured by Mr. George Wale, formerly of the Stevens' Institute, now of Paterson, New Jersey. The general form of this stand is very similar to that of the large model of Nachet, of Paris, but the details of construction have been changed considerably, and we think for the better in many respects. The coarse movement is effected by means of a pinion and chain, the latter being kept tight by means of a spring instead of by a screw, as is the common method, and as the pinion round which the chain is wound is milled so that the links fit into it, all slip is avoided, and there is positively no "lost motion" whatever—the movement responding promptly in either direction even when suddenly reversed. The fine movement consists of a lever which carries the entire body (coarse movement included) downward by means of a spring, and upward by means of a screw, the milled head of which is placed below the arm which carries the body. This brings both movements so close together that the hand may be kept on both at the same time—the thumb and fore finger operating the coarse movement, while the third and fourth fingers make the fine adjustment.

A peculiarity of this microscope is found in the method by which the pillars which support the arm are attached to the foot. Instead of being screwed directly to the foot or cast on it, as is sometimes the case, they are screwed to a circular plate which rotates with a smooth and firm motion. This enables the microscopist to plane the horse-shoe either behind the stage, when the instrument is used in a horizontal or greatly inclined position (as shown in the engraving), or in front of it when used in a vertical position. This confers great steadiness, with a comparatively light and convenient base.

As our purpose is not to give a minute description of any of these stands, but merely to call attention to their characteristic features, we omit all mention of the very ingenious devices which Mr. Wale has introduced into its construction, such as his new form of iris diaphragm, etc.

The advantages of this general form of stand are, that it is low and compact, so that it can be easily used in a vertical position—a favorite method with physicians and histologists. And so generally has it become a favorite, that most of our best makers have found themselves compelled to furnish microscopes of this model in order to retain their customers. Grunow, McAllister, Zentmayer, and others in this country, and even such English makers as Beck, Crouch, etc., have recently begun to manufacture microscopes of the Continental model in addition to their other styles.

For a detailed history of the instrument business of George Wale see:

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