Improved Means or Appliances in Connection with Furnace Bars for Giving Movement thereto.
Year: 1888

page_text: Date of Application, 3rd Sept., 1888
F
Complete Specification Left, 3rd July, 1889-Accepted, 17th Aug., 1889
PROVISIONAL SPECIFICATION.
Improved Means or Appliances in Connection with Furnace Bars
for Giving Movement thereto.
I ADOLPH VOGT of Kiel in the Empire of Germany Civil Engineer do hereby
declare the nature of this invention to be as follows:-
My Invention has for its object to provide simple means or appliances in connection
with furnace bars to effect the jagging or rising and falling movement necessary to
keep them clear of clinker the said means or appliances according to my said Inven-
tion presenting also the advantages of enabling all the parts to be readily and cheaply
made and fitted together to suit any size fire place and readily removed and replaced.
According to my Invention I provide each bar at each end with two circular projec-
tions from each side formed by studs or rollers.
These projections from the bars are situated at a little greater distance from the one
end than from the other so that when the bars are placed reversely alternately the one to
the other the projections from one bar are situated at a short distance from the
projections of the other bar or bars next to it.. I secure brackets or supports at the
site of the fire place in such situations that there is a bracket or support in a line
midway between the two lines of projections from the bars at each of the bar ends and
in these brackets or supports are mounted trunnions or centre pieces from which
depend arms which support a squared rod extending transversely under the bars at
each end of the bars from side to side of the furnace. Upon this squared rod are
mounted carriers consisting of arms projecting between the fire bars upwards from the
squared rod and with two circular recesses at their upper ends which receive the
projections from the fire bars.
The projection from one fire bar rests in one of these recesses and the projection from
the adjacent fire bar rests in the other of these recesses. The appliance is provided
with rods and levers or. gear by means of which the squared rods and the arms which
carry them can be swung upon the trunnions or centres in the brackets so that the
recesses in the carriers give a positive movement upwards to the bar at one side of
each carrier and a positive movement downwards to the bar on the other side of it.
Thus as there are carriers arranged as described at each end of the fire bars and
operated by rods or levers or gear connecting them together the fire bars have
positive movements imparted to them so that whilst any of them are moved upwards
those adjacent to them are moved downwards by a positive movement which ensures
the bars being operated both upwards and downwards.
As the recesses in the carriers are open at top the fire bars can be readily removed
and replaced by bringing the carriers into the position which will permit of it. It will
be readily understood that the appliances can readily be adapted to grates of any size a
number of carriers being used in accordance with the number of bars.
The bars may be plain at top or they may be waved or undulated so as to present a
large heating surface which is possible in grates constructed according to my Inven-
tion owing to the formation of clinker being prevented.
Dated this 3rd day of Santamban 1000
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents

page_text: COMPLETE SPECIFICATION.
Improved Means or Appliances in Connection with Furnace Bars
for Giving Movement thereto.
I, ADOLPH VOGT of Kiel, in the Empire of Germany, Civil 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:
My Invention has for its object to provide simple means or appliances in connection
with furnace bars to effect the jogging or rising and falling movement necessary to keep
them clear of clinker the said means or appliances according to my said Invention
presenting also the advantages of enabling all the parts to be readily and cheaply
made and fitted together to suit any size fire place and readily removed and replaced.
The bars for use in my arrangement can bo very readily made of rolled steel in any
lengths and be cut up to the desired length for bars.
I will describe my Invention with reference to the accompanying drawings wherein
Figure 1 shows in vertical longitudinal section, Figure 2 in sectional plan and Figure 3
in transverse vertical section a part of a furnace provided with my Invention.
Figurés 4, 5 and 6 show in different positions two bars and the devices for operating
them.
Figure 7 is a view partly in section (drawn to a larger scale) showing one end of
the appliances and Figure 8 is an end view of one of the trunnioned arms and
Figure 9 is a sectional plan of the same. Figure 10 is a side elevation of a bar with
carriers in position and Figure 11 is a plan of several bars, the carriers being shown
out of position at the side.
Figure 12 is a modified form of bar. Figures 13 to 16 show the arrangement
applied to a locomotive fire box with an arrangement for tipping the. bars for dis-
charging their load.
According to my Invention I provide each bar A at each end with two circular pro-
jections from each side formed by studs or rollers a. These projections from the bars
are situated at a little greater distance from the one end than from the other so that
when the bars are placed reversely alternately the one to the other as shown in
Figure 11 the projections a of one bar are situated at a short distance from the
projections a of the other bar or bars next to it. I secure brackets or supports Bat
the side of the fire place in such situations that there is a bracket or support B in a
line midway between the two lines of projections a from the bars A at each of the bar
ends and in these brackets or supports B are mounted trunnions or centre pieces C
from which depend arms c which support a squared rod D extending transversely
under the bars A at each end of the bars from side to side of the furnace. Upon the
squared rod D are mounted carriers E consisting of arms projecting between the fire
bars A upwards from the squared rod D and with two circular recesses e e at their
upper ends which receive the projections a from the fire bars A. The pro-
jection a from one fire bar rests in one of these recesses e and the projection a from the
adjacent fire bar rests in the other of these recesses e, as shown in Figure 10 where
the full circles shew the projections on the bar shewn and the dotted circles shew the
projections on the bar next to it. The appliance is provided with rods and levers or
gear by means of which the squared rods and the arms which carry them can be swung
upon the trunnions or centres C in the brackets B so that the recesses e in the
carriers E give a positive movement upwards to the fire bar A at one side of each
carrier and a positive movement downwards to the fire bar A on the other side of it.
In Figures 4, 5 and 6 the operating mechanism consists of an operating rod f
connected to one arm of a bell crank lever g to the other arm of which is connected a
rod attached to the rounded ends of the squared rods D) so as to allow for the small
rotatory movement in operation.
Thus as there are carriers E arranged as described at each end of the fire bars and
operated by rods or levers or gear connecting them together the fire bars have positive

page_text: movements imparted to them so that whilst any of them are moved upwards those
adjacent to them are moved downwards by a positive movement which ensures the bars
being operated both upwards and downwards.
As the recesses e in the carriers E are open at top the fire bars can be readily
removed and replaced by bringing the carriers into the position which will permit of
it. In the position Figure 5 the hinder bar can be lifted out, and in the position
Figure 6 the forward bar can be lifted out. It will be readily understood that the
appliances can readily be ailapted to grates of any size a number of carriers being used
in accordance with the number of bars.
The bars may be plain at top or they may be waved or undulated so as to present a
large beating surface which is possible in grates constructed according to my Inven-
tion owing to the formation of clinker being prevented.
The spaces that would otherwise exist at the sides may be covered by a comblike
piece as shown at I Figures 2 and 3.
In Figures 13 to 16 I have shown the same arrangement applied to a locomotive
fire box and how it can be used with a grate tipping arrangement the rod / being
jointed at ² and one of the brackets B₁ being carried by a frame J centered at j¹ and
connected by the links & and (the latter swing upon the hanging link m) and con-
nected to the nut a through which passes the operating screw p the nut being guided
in guides q. The full lines shew the grate tipped and the dotted lines shew it in its
normal or raised position.
Figures 17 and 18 represents in transverse section and plan respectively a portion
of a furnace grate illustrating a modification in the mechanism for giving motion to
the bars. According to this modification at each end of the furnace there is arranged
a rod or spindle 1 on which arms or cranks 3 are keyed and connected in pairs by
bars 2 each of which engages in slots provided in the underside of a number of fire
bars, or as shewn in the drawing these bars 2 engage in slots provided in pieces 4 to
which are bolted or otherwise fastened five or any other desired number of fire bars A
so that when the spindles 1. are oscillated the bars A will be caused to rise and fall as and
for the purpose herein before described with reference to the other arrangements.
It will be evident that the details can be considerably varied without departing from
the nature of my invention.
Figure 12 shows a bar made of two strips with distance pieces between.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is
.1. The means for imparting to furnace bars a lifting and depressing movement both
by a positive action substantially as hereinbefore described.
2. The furnace bars provided with the projections a substantially as described.
. The carriers E with recesses e which give positive movements to the bars in both
directions and allow the bars to be readily removed substantially as described.
4. The arrangement and combination of parts constituting an appliance for
operating furnace bars substantially as herein before described and illustrated in the
accompanying drawings Figures 1 to 16.
Dated this 3rd day of July 1889.
J. H. JOHNSON & Co.,
Agents.