Improvements in Fire Bars and Grates for Portable or other Engines.
Year: 1886

page_text: Date of Application, 2nd. Apr., 1886.
Complete Left, 3rd Jan., 1887.
Complete Accepted, 4th Feb., 1887.
I JOHN THOMAS the Younger of Wrenbury Nantwich in the County of Cheshire
Engineer do hereby declare the nature of this invention to be as follows:-
This invention has for its object improvements in fire bars and grates for portable
or other engines.
I support the hangers on which the fire bars rest upon supports fixed to the sides of
the fire box and at some distance from the front and back of the fire box. The fire
bars consequently are made to project beyond the hangers for some distance. This
part of the bar is provided with projections near to the hangers to keep the bars
properly spaced. The bars at their ends where they abut on the front and the back of
the fire box are bevilled or inclined and here also they have air spaces between them.
By this construction I obviate the tendency that bars of ordinary pattern have to set
fast and twist or lose their form.
CARPMAEL & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Fire Bars and Grates for Portable or
other Engines.
I, JOHN THOMAS the Younger of Wrenbury, Nantwich, in the County of Cheshire,
Engineer, do hereby declare the nature of this invention and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement :—
This invention has for its object improvements in fire bars and grates for portable
Improvements in Fire Bars and Grates for Portable or
other Engines.
I, JOHN THOMAS the Younger of Wrenbury, Nantwich, in the County of Cheshire,
Engineer, do hereby declare the nature of this invention and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement :—
hase and mater far nortable

page_text: I support the hangers on which the fire bars rest upon supports fixed to the sides of
the fire box and at some distance from the front and back of the fire box. The fire
bars consequently are made to project beyond the hangers for some distance. This
part of the bar is provided with projections near to the hangers to keep the bars
properly spaced. The bars at their ends where they abut on the front and the back of
the fire box are bevilled or inclined and here also they have air spaces between them.
By this construction I obviate the tendency that bars of ordinary pattern have to set
fast and twist or lose their form.
In order that my said invention may be most fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
I support the hangers on which the fire bars rest upon supports fixed to the sides of
the fire box and at some distance from the front and back of the fire box. The fire
bars consequently are made to project beyond the hangers for some distance. This
part of the bar is provided with projections near to the hangers to keep the bars
properly spaced. The bars at their ends where they abut on the front and the back of
the fire box are bevilled or inclined and here also they have air spaces between them.
By this construction I obviate the tendency that bars of ordinary pattern have to set
fast and twist or lose their form.
In order that my said invention may be most fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan of a fire grate made in accordance with my invention; the walls
of the fire-box are also indicated in section.
Figure 2 is a section on the line A, B, in Figure 1.
Figure 3 is also a section on the line A, B, but the fire-bars are here omitted.
Figure 4 is a section on the line C, D. in Figure 1..
Figure 5 is a similar section but without the fire-bars.
Figure 6 is a sectional plan and is similar to Figure 1 omitting the fire-bars.
A, A, are the inner walls of the fire-box. B, B, are the supports for the hangers,
they are fixed to the walls of the fire-box on either side. C, C, are the hangers; as
will be seen, they are so placed as to leave a considerable interval between them and
the front and back of the fire-box. D are the fire-bars near where they rest upon the
hangers they are provided with projections D¹, D¹, which abut one against the other,
keeping the bars properly spaced. There are also preferably other projections D, D³,
intermediate in the length of the bars. At the ends of the bars where they extend
over the hangers they do not abut, but have air spaces D', D³, between. The ends of
the bars are also bevelled at D¹, D¹.
By thus constructing the fire grate the bars are much less liable to get fixed and to
become useless from change of form than is the case with the bars of an ordinary
fire grate.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
1. A grate of a portable or other engine consisting of fire bars resting on hangers
at some distance from the front and back of the fire-box; such fire bars having
projections near to the hangers keeping them properly spaced and at the ends which
project beyond the hangers and abut on the front and back of the fire box having air
spaces between them substantially as described.
2. Fire bars substantially as described and represented by the annexed drawings.