Improvements in Furnace Grate-bars.
Year: 1892

page_text: Date of Application, 3rd June, 1892-Accepted, 9th July, 1892
COMPLETE SPECIFICATION.
Improvements in Furnace Grate-bars.
I, CARL TURNOFSKY, of 48, Marienburger Strasse, Berlin, Kingdom of Prussia,
Empire of Germany, Merchant, do hereby declare the nature of my invention, and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
My invention relates to an exchangeable grate-bar constituted by two metallic
bars provided with recesses for the reception of bolts, the heads of which support
the fuel. The shanks of the bolts are provided with lugs, and the bars with
corresponding recesses, or vice-versa, so that a lateral movement of the shanks is
prevented.
My present invention is a new form of construction of the grate-bar patented by
me on May 19th, 1891, No. 8513. In this Patent I have described and claimed the
employment of bars of corrugated iron. According to my present invention I
employ, as supporting-bars for the above mentioned bolts, parallel iron-bars of
different shapes, as will be more readily understood by reference to the accompanying
drawings, in which:
Figs. 1, 2, 3, 4 & 5 illustrate five different forms of construction of my improved
grate-bar.
Fig. 6 is an elevation of one of the bolts in connection with the parallel
bars.
Similar letters refer to similar parts throughout the several views.
In Fig. 1 the bars A are parallel to each other at the places where they hold the
shanks B of the bolts between them (see also Fig. 5). The head C of the bolts is
square, but it may of course be shaped otherwise. The shank B is provided with
two lugs D fitting into corresponding recesses, or passing through corresponding
holes, of the bars A. Each pair of bars A is bent outwardly between the points at
which the bolts are located, and the lugs D may be of sufficient length to be in
contact with the bent-out portion of the adjoining bar A, thereby affording an
increased rigidity of the web. In Fig. 2 the bars A are parallel one to another in
their whole length. In Fig. 3 I have shown square shanks B, and the bars A are
bent at sharp angles, as shown, so as to grasp the shanks. In Fig. 4 I have
employed round shanks, and the bends of the bars A are made accordingly. In
Fig. 5 the bars A are bent outwardly in the shape of a trapezium, the shanks B are
rectangular.
It will be understood that the lugs D are dispensable in some cases, as shown at
Figs. 3 & 5.
The main feature of my invention is the formation of a grate-bar by means of two
bars parallel to each other in their general direction and clasping between them
the shanks of a series of bolts, the heads of which constitute the surface for
supporting the fuel.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A grate-bar formed by two bars parallel in their main direction and clasping
between them the shanks of a series of bolts, the heads of which constitute the fuel-
supporting surface, for the purpose as described.
2. The hereinbefore described constructions of grate-bars, substantially as

page_text: illustrated by Figs. 1-5 in the accompanying drawings, for the purpose set
forth.
Dated this 3rd day of June 1892.
CARL TURNOFSKY,
By Geo. H. Rayner,
37, Chancery Lane, London, W.C., Agent for the Applicant.