US463168A - Dissecting-microscope - Google Patents

Description

(No Model.)

L E SAYRE DISSEGTING MICROSCOPE.

Patented Nov. 17,1891.

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To all whom it may concern.-

UNITED STATES PATENT OFFICE.

LUOIUS ELMER SAYRE, OF LAIVRENOE, KANSAS.

DlSSECTING-MICROSCOPE.

SPECIFICATION forming part of Letters Patent No. 463,168, dated November 17, 1891. Application filed July 3, 1890. erlal No. 357,704. (No model.)

In the use of the ordinary simple dissectingmicroscope difficulties are met with in the analysis of flowers and inspection of objects from the fact that both hands are necessarily employed in holding the instrument and object under examination. To overcome this difficulty and to give freedom in manipula tion of objects and in the handling of lenses at the same time, I have invented a new and a useful improvement in the combination, ar-

rangement, and mode of operation of the parts of the microscope, so as to allow it and the object under examination both to be held in the same hand at one and the same time, while the other hand is free to dissect and turn in different positions the object under examination. This device, combination, and improvement consist of a suit-able palm-piece or handle to be held in the hand and to extend down toward the wrist. At the wrist end of this hand-piece is attached and connected by a hinge-joint an arm, which is allowed to move freely in a vertical plane when the instrument is held in a position for use. The summit of this arm, or the end farthest from the handpiece, is a socket which is threaded on the on 1:- side. Into this socket is inserted and fitted a ball, forming the ordinary ball-and-socket joint, and into a threaded hole properly made in this ball is screwed a small post, which terminates at its other end in a needle-point. A screw-cap is screwed on this socket, which forms the summit of the arm after the inserject under examination as it is held between the thumb and forefinger of the hand which holds the microscope. In the hand-piece is a groove of sufficient breadth and depth to receive and protect the arm-post and lens when closed.

The annexed drawings give an illustration of the instrument and the letters indicate its several parts.

Figure 1 is a representation of the instrument partly in section, and Fig. 2 showing it as held in the hand in use.

a is the hand-piece; b, the hinge-joint; c, the arm, which is connected by the hingejoint to the hand-piece; d, the socket at the summit of arm a; e, the ball at the base of post f, which fits into socket cl; f, the post, which is screwed into ball 6 and supports the lens; g, the screw-cap which covers socket d; h, a thread on outside of socket; I, a screw at base of post f; J, a needle-point at extremity of The object and purpose of my improvement are to afford such movement of the instrument as will enable the lens to be brought over the object under examination when the instrument and the object are both held in the same hand.

I do not claim, broadly, the invention of a handle of a simple dissecting-n1icroscope, nor any novelty in the hinges or joints used.

\Vhat I do claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, in a simple dissectingmicroscope, of a grooved hand-piece a, with an arm 0, connected with said hand-piece by a hinge-joint b and having at its other extremity a socket d and capable of movement in the same plane with said hand-piece, and the further combination of both said handpiece a and arm 0 with a post f by means of a balland-socket joint formed by inserting the ball 6, into which post f is screwed into post f, terminating in a needle-point J, upon 10 the socket cl and adjustable by screw-cap g, which the lens is placed, said parts being comand the further combination of all these said bined and united substantially as set forth. three parts of the handle with the lens placed In testimony whereof I affix my signature in upon a needle-point J, the termination of a presence of two Witnesses. 7

post f, all substantially as set forth. LUOIUS ELMER SAYRE.

2. An improved handle of a simple dissect- W'itnesses: ing-microscope, consisting of three parts, to FRED. E. STIMPSON, Wit: a grooved hand-piece a, an arm 0, and a E. MABEL SAYRE.

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