|
|
 |
Bausch & Lomb Optical Co.
Pat. Oct. 3, 1876 and Oct 13, 1885
The Universal model microscope fitted with binocular tubes.
|
|
|
|
|
From: Behrens Guide to the Microscope in Botany, 1885 This stand, made by the Bausch and Lomb Co., is represented 1/2 natural size in Plate XI. It comprises the same general features as the one last named, but by a slight increase of distance between the stage and the table sufficient space is secured to admit the use of the largest illuminating or polarizing apparatus, etc., that is usually employed on the largest stands. In fact there is scarcely any of the accessory apparatus of the highest-priced microscopes that cannot, with a few slight modifications in non-essential particulars, be easily and efficiently combined with this. This stand can be obtained as shown in the cut, in a very simple and inexpensive style; but it is capable of a much higher development. It has been constructed, for the use of the writer, with the addition of lengthening mirror bar, graduated draw-tube for use in micrometry and in drawing to scale at any desired amplification, centering adjustment to stage, and graduated rotation of the same, centering substage moved vertically with rack and pinion, and graduated fine adjustment screw with index point, for use in measuring approximately the thickness of objects or cover-glasses. It is named by the makers the "Universal," from the belief that it is possessed of the working capacity of the most elaborate stands. The stage is well adapted to the use of a glass sliding stage; and a mechanical stage moved in all directions by special mechanism can be added if desired. |
|
The Wenham prism on this microscope utilizes a patented mechanism for its mounting as described in the 1884 US patent 293,217.
|
 |
 |
|
|
From The Journal of the Royal Microscopical Society, 1882: Bausch and Lomb Optical Co.'s Glass Stage and Slide- carrier.This (Fig. 128) is intended as a substitute for the mechanical stage to a certain extent. It consists of a polished plate of glass, incased in a brass ring, which clamps on the circular stage. The slide-carrier, which moves on it, consists of a light metallic plate, and has protruding from its lower surface four small points; at its two ends are prolongations, which are bent downward and inward, and, acting as springs, press against the lower surface of the glass. As the contact between glass stage and slide- carrier is only in these six points, friction is reduced to a minimum, and the action of the latter, although firm, is smooth and steady. It is claimed that it enables work to be done with far more facility than in the ordinary brass stage, where the entire surface of the slide bears on it, and that it is altogether more agreeable. The slide- carrier is provided at each end with small milled heads for manipulation, and has spring clips and a stop for Maltwood finder. |
 Bausch and Lomb Optical Co.'s Condenser.—The speciality of this condenser is that one end of the cross arm has a weight acting as a counterpoise to the bull's-eye lens at the other end. The lens is 3 in. in diameter. | |
 |
 |
Elsewhere on this website is a monocular version of this microscope
Home Page-Antique Microscopes Site Index
