US2263112A - Holder for laboratory devices - Google Patents

Description

Nv. 1s, 1941,. w. B. WARRN 2,263,112

,HOLDEVR FOR LABORA}TORY DEVICES Filed Dec. 21, 1940 FIG- 1- /Qweyz'ow WMM/V E MERE/V,

Patented Nov. 18,1941

v *UNITED STATES j PATENT '72,263,112 I y D William B.. Warren, Mount Lebanon, Ba., assigner to VFisher Scientific Company, Pittsburglnla.

Application December 21, 1940; SverialNo. 371,216 l @claims (o1. 248-229) This inventionrelates to holders for laboratory devices,` and more particularly torings usually of metal, which areclamped to, and extendat right'angles from, a vertical support for purposes which include the holding of a vessel lor other objectover a source of heat.

Conventionally, rings, of the type referred to merely comprise, in additionto the clamping instrumentality,` a Acircular metallicring which is I usually round in cross section, and adapted, when in use, toassume `such a position that its major y I axis occupies? a substantially` horizontal plane.

When so disposed, there is usually placed on top of the ring a piece of metallic gauze or a metallic triangle for the` purpose of supporting a beaker, or `other object;` These metallic'gauzes may be circular, but most frequently are square; while the metallic triangles are composed of intertwisted wires with the corners thereof extended for providing contact with the upper surface of the ring.

In laboratories, the rings, `metallic ganzes and metallic triangles are usually kept in a drawer or other suitable depository, and because of their complete detachment, become separated and lost at inopportune times.

It is among the objects of theipresent invention to provide for laboratory devices such as metallic gauzes, metallic` triangles, etc., a holder which is so constructed that the said devices may be quickly and easily attached thereto, thereby eliminating trouble and lost time accruing from detachment.

Another object is the provision of a metallic ring of the type described which comprises a simple clamping instrumentality with which the.

metallic gauzes, metallic triangles, etc. may be rigidly held at one portion thereof, whereby the remaining portions are permitted to expand and contract due to temperature variations, thereby eliminating buckling.

To the accomplishment of these and other desirable objects and purposes, I have designed the present, preferred embodiments of the invention presented in the accompanying drawings forming a part of this specification and to which reference should be had in connection with the following detailed description, and in this drawing, for simplicity, like reference numerals have been employed to designate the same `parts throughout the several views.

In said drawing:

Figure 1 is a plan of the apparatus of the present invention as it occupies a position extending horizontally from a vertical standard, and carrying secured thereto a laboratory device inthe form of `asduare of metallic gauze. l

Figure 2 is asectional view on the line II-IIiof Figure 1; 1 y

Figure 3 is a4 View similar to thatof Figure 1 but disclosing in combinationa. substituted laboratory device in the form of a metallic triangle.

Referring moreparticularly to the drawing, wl'iereinthere is'illustrated a preferred embodiment of aholdermade in accordance with the teachings ofthe present invention, the numeral I generally designates a` ring which conventionally-ismade of iron Yand has formed integrally therewith, and in substantially the same plane, a shank 2 having at its outer end a rod-receiving recess 3u for which there is provided a clampscrew 4. i

According to such construction and arrangement, the ring'l may be attachedto, and made to'extend at right anglesA from, a verticalf rod or standard (not-shown); Upon theupper sideof the ring I, which, so far asIamaware, has always been substantially round in cross-section, there is placed a piece of metallic gauze 5, or an intertwisted wire triangle 6, andupon this there is superposed a beaker or other object (not shown) usually for the purpose of subjecting the same to heat which is applied from below.

The teachings of the present invention contemplating, as hereinbefore stated, the firm attachment of the laboratory device (iIe. metallic gauze, triangleformed of intertwisted metallic wires, etc.) there is provided on what will in service be the upper side of the ring I a flat surface 8 which extends onto the shank 2 and terminates in a right-angular abutment or wall I0. In the mid-portion of this abutment or wall II) there is formed a generally rectangular recess I I, the bottom of which, for the most part, occupies the plane of the flat surface 8. Immediately adjacent to, and connecting with, the back wall of the generally rectangular recess I I, there is provided `on the bottom thereof a short and shallow step I2.

Disposed with its inner end upon the step, and projecting substantially from the generally rectangular recess I I, is a rectangular block I 4. 'Ihe width and thickness of this rectangular block I4 correspond, respectively, to the width of the generally rectangular recess II, and the distance between the top of the step I2 and the upper surface of the shank 2.

I projecting end of the rectangular block I4 over- Accordingly, then, the l porting medium (i. e. the aforesaid metallic gauze, triangle formed of intertwisted metallic wires, etc.).

Disposed between the edge or end of the supporting medium and the abutment or Wall I0, there is formed in that portion of the flat surface 8 of the shank 2 which is beneath the rectangular block I4 a screw-threaded recess I6. This screw-threaded recess I6 receives a screw I8 which extends through the rectangular block I4. This, the supporting medium, is rmly attached to the ring I, whereby the desired ends are attained.

While I have shown and described certain specic embodiments of the present invention, it

a laboratory flask or the like, means for clamping said ring to a support or standard, Va detachable supporting instrumentality extending across the upper surface of said ring, a fulcrum on the upper surface of said ring, a lever carried bysaid fulcrum and adapted to overlie said detachable supporting instrumentality, and means for holding one end of said lever in contact with said detachable supporting instrumentality whereby the latter is maintained against displacement.

2. A holder for laboratory devices comprising a ring adapted to assume a substantially horizontal plane, and when in such position to support a laboratory ask or the like, an lextension carried by saidring, means on said extension for clamping the same to a support or standard, a detachable supporting instrumentality extending across the upper surface of said ring and onto said extension, a fulcrum on the upper surface of said extension, a lever carried by said fulcrum and adapted to overlie said detachable supporting instrumentality, and means for holding one end of said lever in contact with said detachable supporting instrumentality whereby the latter is maintained against displacement.

3. A holder for laboratory devices comprising a ring adapted to assume a substantially horizontal plane, and when in such position to support a laboratory flask or the like, means for clamping said ring to a support or standard, a detachable supporting instrumentality extending across the upper surface of said ring, the upper surface of said ring having a recess, a fulcrum within said recess, a lever carried by said fulcrum and adapted to project from said recess and overlie said detachable supporting instrumentality, and means for holding the projecting end of said lever in contact with said detachable supporting instrumentality whereby the latter is maintained against displacement.

4. A holder for laboratory devices comprising a ring adapted to assume a substantially horizontal plane, and when in such position to support a laboratory flask or the like, an extension carried by said ring, means on said extension for clamping the'same to a support or standard, a detachable supporting instrumentality extending across the upper surface of said ring and onto said extension, the upper surface of said extension having a recess, a fulcrum within said recess, a lever carried by said fulcrum and adapted to project from said recess and overlie said de-A tachable supporting instrumentality, and means for holding one end of said lever in contact with said detachable supporting instrumentality whereby the latter is maintained against displacement.

WILLIAM B. WARREN.

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