US212645A - Improvement in malt-kiln floors - Google Patents

Description

F. BAUMANN. Malt-Kiln F1001.

No. 212,645.. Patented Feb. 25,1879.

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FREDEMCKBAUMANN, 4:on CHICAGO, ILLiNCIs.

IMPnovEMEN-r IN MALT-KILN FLooRs.`

Specification forming part of Ifetters Patent No. 212,645, dated February 25, 1879; application iilcd July 16, 1878.

To all whom 'it may concern:

B'e it known that l', FREDERICK BAUMANN, of the city of Chicago, county of Cook, State of Illinois, have invented new and useful Improvements in Malt-Kiln Floors, of which the following is a full and accurate description, reference being' had to the accompanying drawings, which forni part and parcel ot' this specification.

The nature of my invention relates to that class of malt-kiln floors which are composed or constructed of equidistant parallel floor.- bars, secured to and supported by notched cross-bars.

The peculiarity of my cpnstruction is, that my floor-bars aremadewith concave or grooved sides, into which the metal of thebridges leftbetween the notches ofthe cross-bars is crowded by means of upsetting. i

Besides, Ipropose to make a very strong, substantial, and durable malt-kiln floor, which, at the same time, and nevertheless, contains air-spaces between the floor-bars to the amount of from thirtythree to forty-two per cent. of the whole surface--a 'result which has, in the combination of bothl points, never before been accomplished.

I have also a peculiar method of uniting the several sections of which the malt-kiln tloor is composed, and which are previously made in some workshop, with` the intention of forming a whole and unbroken iioor after uniting.

My cross-bars project beyond the edgesof the section of which they form a part. These projections of one section meet those ot' another section, and a rivet, bolt', or screw is passed through a hole prepared in theprojections, c

In the drawings, Figure l` is a perspective view of a portion of my malt-kiln door; Fig. 2, an enlarged sectional view of the same.

A A are the :floor-bars, which I propose to make on'etenth to one-ninth ot' aninch wide at the upper edge; one-thirteenth to onetwelfth of an inch wide through the rounded lower part; one ninth to oneeighth of an inch deep from top to bottom; one-fifteenth to one-fonrteenth ofan inch wide across the concaved points.

The concave or grooved floor-bars are produced by the known process of drawing through dies. I would so space these iloorbars as to leave airspaces ibetween them which do not exceed one-sixteenth of an inch in width.

B B are the cross-bars, with their equidistant notches, which are punched or otherwise cut into the upper edges ot the cross-bars. These notches are of less depth than are the door-bars A, and so shaped as to allow the floor-bars A to be inserted from the top. The iioorbars A, being thus inserted v`into the notches of the cross-bars B, are then secured to and with the said cross-bars B by upsetting the bridges left between the said notches, by

which means themetal of these bridges is crowded into the side grooves of the floorbars A, so as to firmly clasp and hold them.

These cross-bars B, I propose to make, say, one-sixteenth .of an inch in thickness, one and one-eighth inch in depth, and two feet in length, and place them from two to two and one-half inches apart from eachother. Their ends are so trimmed as to leave standing a full bridge beyond the extreme notch, and then project in its lower portion about onefourth of an inch beyond this point, having in this projection a hole for uniting the several sections coinposin g the iioor. These sections I propose to make about twelve feet bars B.

I further propose to unite the several sections composing the malt-kiln oor so as to break their joints. I accomplish this by uniting the Central cross-bar of one tile with the l extreme crossbars of four other adjoining tiles, (two at each side.)

The support of this malt-kiln floor is assumed to be a rigid iron construction of I- 2 i einem beams, which are madeto form part of the grooves of the Hoor-bars, substantilly as -n building. for the purpose setforth.

What'l' claim as my invention is- A malt-kiln oor composed of Hoor-bars FREDERICK BAUMANN' A, having concave or grooved sides, and se- Witnesses: cured to the notched Ycross-bars B by upset- E. JEBSEN,

ting the met-a1 of the cross-bars into the side EMiL H. FROMMANN.

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