US325722A - Microtome - Google Patents

Description

4E BAUSGH.

MIGROTOME.

(NoModeLy 2 Sheets-Sheet 2..

Wa /G u A l UNITE PATENT nnwnnn esuscmor new r onx."

Io. sag-r2}. emu A nannma niaiaesfimomJ 'I'oallwhamitmayconccfm- Be'it' known that LEBwm Benson, of Rochesteigin the county of Monroe and State of New York, have invented a new and useful Improve ent in Microtoma, of which the followingis specification, reference being made vto the annexed drawings,forming a part thereof,-in which- V v a Figure 1 is a front elevation of my improved microtome. Fig. 2 is a plan view. Fig. 3 is a; vertical section taken on line a: a: in Fig. 1.- Fig..4 is a side elevation of the knifecarrying 'slide. Fig. 5 is a plan view of the same. Fig. 6 is a lan view of the objectholdingclamp; and Fig. 7 shows a clamp for holding an ordinary razor, the plan viewgof this device being also shown in connection with the slidein, Fig.. 5. Fig. '8 is a sectional .ViBlLShowinga modification of the knife-car-v rying slide.

Similar letters of reference indicate the same 'parts in all the figures of the drawings.

'- thereto'for carrying therewith, and with The. object ofmy' invention is to provide a microtome capable of cutting sections at any desired angle, angle with the object to be cut, and which will permit of ready adjustment, and will secure more perfect results than can be secured by the 'microtomes of ordinary construction. My invention consists in a frame provided with a V-shaped guide and a slide adapted a knife and retained therein by a spring-feather. 1

It also further consistsina'ball-and-socket holder for the objectclamp, which admitsfof adjusting the object at any desired angle.

It also consists section-cutti'ng-knife' and the object-holder, all as hereinafter more fully-described.

The frame A of is provided. with a base, B, cast integrally formed on the back thereof forreceiving the knife-carrying slide D. Along the vertical wall of the guide 0 is formed a. groove, a, and

. in the knife-carrying slide D is formed a corresponding groove, a, in which is secured a spring-feather, b, which is adapted to slide in the groove a in the frame A. The springfeather b bears at the top and bottom groove a-' with a slight friction, which insures and'with a knife placed at-any' in means for adjustingihe my improved mierotome a V-shapedguide, G,

' ted aT-headed'bollgo, which of the' which will "project partly over the'vshaped I a guide in position-to be engaged by thespring 6o ,b', as'represented in Fig. 8. g

In the top of the knife-carrying slide D is formed a T- shaped T-headedbolt, d, whose screw-threaded shank projects upward through the slot beyond the 55. .upper face ofthe knife-carrying slide and re- ,eeivcs aiming-nut, e, for. binding the knife E tothe knife-carryingslide D. I "Y j Inthe front of thevertical portion of the shaped headed bolts, v

frame A, isformed a longitudinal T- slot,'f, to which are fitted two T- g, which project outward beyond the face -of the frame A and through a stiding frame, F,

fitted m the vertical face or the semi A; and providedwith a tongue, k, which projects int .75

the narrower part of the T- shaped slot f, an .forms a guide for the frame F. A .vertical dovetailed. slot, i, is formed'inthe frame F,

"and to the said slot is fitted a slide, which .carries the object-holder, and whichis adj ust- 8o able up and down in the slot 2 by a micrometer-screw, G, whichgisfitted to a l;hr eaded bearing, k, in the lowerhorizontal bar of the frame F.

' The threaded hearing or nut I: in the inicrometer-scrcw(ir'- turns is made in two parts, one being formedintegrally with the frame F, the other part, I, being attached to the frame F by a screw, or,

cure the in. The screw G is provided with a beveled disk, H, which may be'turned in the slot .in the lower part of the frame F-when it is j by means of-the 95 desired to raise the slide micrometer-screw G. In the front of the slide j is formed a T-shaped slot, 11,130 which is fitprojects at right angles through the slotan'd beyond the face of the slide j and receivesa vertical slide, I, com IQO posed of the two arms q, whichnre seemedto each other by a screw, 1', and provided with Blot, c,towhichisfitteda.

I which permits of adjusting the threaded bearing Is to always seproper bearing of the screw G there- 'a'tongue fitted to the new owerpart of t-heslot 'n in the slice The arms pq are'apertnred and adapted to receive between them the spherical clamp-support J,,and a screw, 8," passing through the upper arm. 12, and into the lower arm, q, ser ves to securely clamp the spherical holder J in any desired position. The spherical clamp-holder J is bored axially to receive the shank t of the object-clamp K; and itis provided in its upper side with a flanged sleeve, u, in which is insertedamilled adjusting-screw, v, for clamping the shank t in position in the spherical holder J.

The object-clamp K is of the usual well- 4 w, a yoke, a", connected with thefixed jaw 10 by rods b", a movable jaw, c, sliding on' the rods-b", and adapted to be-moved back and forth by the screw e, which passes through the Yoke a. 1

, Thebase of the frame Ais slotted to permit of the longitudinal movement therein of the lower end of the micrometer-screw .G. By means of this construction the frame. Find.

pointalon'g the length of the frame A, and fixedby means of the nuts 9K of the bolts 9, and the object-clamp and its support may be moved. up or down on the slide j, after loosening the nut 0 on the bolt 0, when it may be secured by again tightening the said nut. By providing for the movement of the object-. holding clamp 'to any point along the length ,of the bed-plate, and arranging the knife-' carrying-slide sothat it may move along the entire length of the bed plate, I am enabled to V adjustthe knife so as to make-a cut at a 'very oblique angle from anobjeetr of considerable size.

The'sphtrical clamp-holder J may be inclined at any desired angle within certain limits and securely held in any desired position by tightening the screw 8. The object-clamp K may also be raised or lowered in the clampholder J, so that anyd'esircd position or angle of the object to be cut may be readily secured. j

.The section cutting knifeE is provided with a curved. shank having a corresponding slot, which is open in one side to receive the bolt d. This knife may be place-din any position along the length of the slide I), and it; may also be clamped at any desired-angle with the face of -the frame A, so that the cut may be made at right angles with the objcct,or a long drawing 'eutma-y bemade by inclining the knife more.

or less with the face of the frame'A.

I have cut away the upper portion of the base in the front thereof to receive'a trough. .60 L, into which the, objects cut by the knife E may fall. V By curving the back of the frame A to receive the disk H of the micrometer-screw G, I

avoid slotting the frame, and thereby increase '55 its strength and rigidity.

known description, consisting of .a fixed jaw,

"ter-screw carried thereby,

To adapt an ordinary razor for use in my improved microtome, I provide an auxiliary holder, M, consisting of an arm curved at one end and; apertured' to receive the bolt d, and having at the oppositeend a horizontal mortise, j, which is made circular at one end to receive the back of the razor-blade N, the opposite end of the mortise being of trapezoidal form to receive the cutting-edge of the razor and to admit of adjusting itat the proper angle with reference to the plane of its motion; In the extreme outer end of the arm M is placed a screw, h, which enters the mortise andbears upon the back of the razorN, and. in the top of the arm M is placed aserew, i, which enters into-the mortise and bears upon the upper side of the razor N. By-means of these two screws the razor may be accurately adjusted at any desired angle,and may be'se- .eurely clamped, so that it is possible for any 85 one having my improvedmicrotome to use an ordinary razor, which is comparatively mex i w pensive, in place of the expensive section-eutting knife commonly used for this purpose. parts attached thereto may be moved to any Having thus described my invention, what I cl aim,'and desire to secure by Letters-Patent,

11. In a microtome, the combination, with V-shaped guide and a V' shaped knife-earry-' ing slide capable of sliding in the guide, of a spring adapted to hold the said'V-shaped slide in the slot-of the V-shaped guide, substanti e ly as herein shown and described.

2. The combination, in a, microtome, of a section-cutting knife, the knife-carrying slide provided with a T-s'haped islot, a 1: hea e bolt adapted to clamp thesecJion-cuttmg knife in any position along the le gth of the knifecarrying slide, and an object-holder adapted to support the object from which the sections are to be cut in the path of the sectioncuttmg knife, as herein specified.

. 3. The combination; in a microtome, of a knife-carrying slide adapted to he slid the entire length of the main frame and an ob ectholder movable along the entire length of the ,frame', substantially as herein specified.

4. In a mierotome, the eggbination, with the frame F andebjiac't-(mgr'r d micromelie frame A,

having a. slotted base and curved back to admit'of moving the frame F and micrometerscrew along the frame A, as specified. v

5. In a mierotome, the combination,with the .s ction-cutting knife and its slide, of a c lamp arranged to support the object from which the section is to be cut, and a ball-and-socket holder for supporting the said object-clamp in any desired position, as specified. p 6. The combination, with the vertically-ad 1 r 1 ju'stable slide j, of the arms p q, adjustable 1p and-down on the said slide, the spherical holder J and means-for clamping the holder 1n any desired position, as specified.

7. The combination, in a microtome,

of the 1 ;1 rmsp (1, screw s, axially-bored spherioel holdor J, adapted to beheld by and between the said arms p q, the clamping-screw v, and the ohiect-clamp K, as herein specified. 8. In a microtome, the combination, with the slide D, of a curved arm, M, provided with a mortise, f,

as herein described;- and two screws, h i, entering into the mortise and adapted to clamp theback and side of a razor,

, as described. 7

EDWARD BAUSCH. Witnesses: e

GEO. HOMMEI, WM. BAIJ'SOHL

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