US251721A - Trichinoscope - Google Patents

Description

V(No Model.)

C. 1?'. LOMB 8u E. BAUSCH. TRIGHINOSGUPB. No. 251,721. Patented Jan. 3.11882.

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AUNITED STATE-s PATENT OFFICE. i

CARL F. LOMB AND EDWARD BAUSCH,` OF ROCHESTER, YORK.

TRioHlNoseoPE.

SPECIFICATION forming part of` Letters Patent No. 251,721, dated January 3, 1.882.

Application filed June 6, 188i. (No model.)

`To all whom it may concern: Bc it known that we, CARL F. LOMB and EDWARD BAUsCH,citizensot`the United Sta tes, residingat Rochester, in the county of Monroe and State of New York, have jointly in vented an Improved Trichinoscope, ot' which 'the following is a specification, reference being had to the annexed drawings. v

Our invention has forits object the production of an improved trichinos'cope or portable instrument for the detection ot trichinte; and it consists in combining a lens of sufficient magnifying power for the purpose with a pair of clamped compression-plates, so that it may be adjusted laterally in planes parallel to the plates `between which the suspected object is iiattened so as to become transparent, the whole forming a cheap and 'simple device, capable of being used by persons unskilled Vwith the microscope.

`Our invention also consists in the details of the arrangement, as hereinafter more fully pointed out. i

Our improved trichinoscope is represented in the accompanying drawings, in which Figure lis a plan view. Fig. 2 is a central longitudinal section on the lino x m, Fig. 1. Fig.3 is a side elevation. Fig. et is a side elevation of a modied form of our improved trichinoscope. Fig. 5 is aplanview of the same. Fig. 6 is an end view ofthe same.

In the accompanying drawings, representing our improved trichinoscope, a a are thev glass plates between which the object to be eX- amined is iatteued b b', the frames containing the plates; c, the clamping-screw; d, the hinge, and e the microscope, attached to the upper frame by the swinging supporting-bars ff. g is an adjusting-screw. The compression-plates a c are formed ot' glass, with parallel faces, attached together by a suitable clamping device and so arranged that the slice or fragment of meat to be examined may be subjected to pressure between them for the purpose of crushing or flattening the same so as to renderit transparent. The plates are preferably inclosed in frames b b', hinged together at one end and provided with a clamping-screw, c, at the other. The arrangement will be readily understoodfrom the sectional view, Fig. 2, in which a a are the glass plates; b b', the fra-mes d, the hinge by which they are attached together, so that they may be opened for the purpose of introducing the object', (see dotted lilies 11;)4and c the clamp-screw,.which is pivoted to one end ofthe lower traine, b', so that it may swing outward, (see c.) and is pro- 4 vided with the thumb-nut l. An adjustingscrew, g, passes through one ofthe frames and bears against the other, for the purpose of determining the thickness ofthe object.

l Instead ofthe hinge d, clamps may be used at each end of the frames, so that the lower plate may be entirely removed when the object is introduced; and, it' desired, the clamps may beapplied directly to the glass plate, the frames being dispensed with.

Any suitable form of clam p may be used, operated bya screw j provided with a diaphragm. In Fig. 3 we have shown theI body ot a compound miscroscope as attached to the swinging barsj'f. The microscope, whatever form be chosen for it, is made adjustable in a direction at right angles with the compression -piates by means ot a thread on thelower part thereof entering a socket on the free end of the bar f. The tube may be so arranged as to slide through the socket. This arrangementen ables the observer to adjust the object in focus, if it becomes necessary; but it will be observed that the construction is such that the lens, when once focused, remains practically at the same distance from the lower face ot' the com pression-plate a, while it is freely adjustable in a plane parallel thereto for the purpose ot' examining different portions of the field, and that any object placed against that face will thus be always in focus, it being one ofthe objects of our invention to provide an apparatus which may be used with IOO 8o represented itas consisting ot' a double lens i as little manipulation as possible, and such object being accomplished by making the lower plate, a', movable for the purpose of introducing the object between the plates, While the relationship of the lens and the upper plate, a, remains constant. The plate a is made as thin as is consistent with sufficient strength.

In Figs. 4, 5, and 6 We ha ve represented a moditication of our improved tricliinoscope adapted to the use of the glass object-slides ordinarily employed by microscopists. The frames b b are in this case made, of a size and shape to inclose the slides a a', and are provided with a hinge, d, and clamp c, as previously described. The lens e is mounted on the upper frame, b, so as to be adjusted longitudinally and transversely thereon by means of the slide h and the pivoted supporting-barf. The upper frame, b, maybe made slightly wider than the glass plates, in which case the ends ofthe slide It are simply bent over theedges of the upper frame; but We prefer the construction shown in the drawings, grooves being cut in the side of the frame and the slide h being provided with wings t' i', fitting the grooves. rEhe grooves for the slide h may also be formed on the inside of the opening formed through the upper frame.

The manner of using our improved trichinoscope will be readily understood from the accompanying drawings. A slice or fragment of meat or other substance which is suspected of containing'trichin is placed on the plate a, and it is then flattened or compressed by forcing the plate a against it, any suitable liquidsuch as Water or glycerine-being employed to render the material transparent. The observer then ascertains the presence of trichinae in theobject by looking through the lens against any strong light, shifting the position ot' the lens so as to bring all parts of the object under examination.

Instead of the pivoted support f, as shown in Figs: 4 and 5, the lens may be attached to a cross-slide arranged to move transversely on the slide h.

It is obvious that ourilnproved trichinoscope may be used for the examination of many other kinds ot' objects.

We are aware that microscopes have been heretofore constructed in which the body was supported over the stage on ajointed arm, so that it could be swung laterally from above the stage for the purpose of facilitating access to objects thereon, and such arrangement we do not claim.

lVe claim- 1. The herein-described trichinoscope, consisting of a suitable microscope arranged to be moved in a plane parallel with the compression-plates a et', and attached thereto by a suitable support adapted to permit the said motion, substantially as and for the purposes set forth.

2. The combination ofthe compression-plates a ct', frames b b', clamping-screw o, hinge d, microscope e, and movable support f, substantially as described.

3. The combination, with the compressionplates t c', of the frames b b', clamping-screw c, and microscope c, arranged to be adjusted parallel to the plates by means of slide It and suitable support,f, substantially as described.

4. The combination, .with the compressionplates a a', ofthe frames b b', clamp c, adjusting-screw g, and microscope c, arranged to be adjusted in planes parallel to the. plates, substantially as described.

5. The combination, with the clamped compression-plates a a', of the microscope e, connected to the plates so as to be moved in a plane parallel therewith, and having afocusing adjustment at right angles thereto, substantially as described.

CARL F. LOMB. EDWARD BAUSCH.

Witnesses: y

HENRY LOMB, GEO. B. SELDEN.

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