Improvements in Cooling Mechanism for Brake-discs.
Year: 1899

page_text: Date of Application, 6th Apr., 1899
1000
PROVISIONAL SPECIFICATION.
Improvements in Cooling Mechanism for Brake-discs.
I, GOTTLIEB DAIMLER, of Cannstadt, in the Kingdom of Würtemberg, in the
German Empire, Engineer, do hereby declare the nature of this invention
to be as follows:―
66
The present invention relates to improvements in brakes, and has for its object
a mechanism for cooling the brake while it is on," thereby preventing the
running hot of the brake blocks.
My invention essentially consists of a water reservoir, the cock of which opens
when the brake is put on. As soon as the brake is taken off again, the cock
of this water reservoir is automatically closed and no cooling medium can flow
out. The cock of the water reservoir is suitably connected to the lever of the
brake, so as to be controlled thereby or by the hand lever of the brake. By
means of my invention it is possible to actuate a brake for as long a period as
necessary without running the risk of the brake wheel or pulley running hot
or bursting. At the same time it is impossible that wooden brake blocks should
commence to burn, when the brake is put "hard on or for a long time.
"
My mechanism can advantageously be employed for vehicles of all kinds driven
by any power. In employing my mechanism and my particular brake pulley
the repairs of the brakes will be considerably lessened and the wearing out of
the tyres especially the caoutchouc tyres used for carriages will be obviated.
In winding engines my mechanism can be advantageously used as the diameter
of the brake pulleys may be less than of the brake pulleys which were necessary
up till now for such engines.
My invention will be more fully described with reference to the accompanying
drawing, in which similar letters denote similar parts throughout the different
views, and in which:-
Figure 1 shows a side-elevation of my mechanism, and
Figure 2 shows a transverse section of the brake pulley according to my
invention.
A is the brake pulley having a dish form as represented in vertical section in
Figure 2. In the example illustrated this brake is scotched by the brake-blocks
on the levers B B¹. The brake-block levers B B¹ are suitably connected to a
hand-lever H movable round an axis C.
D is a reservoir containing the cooling medium. On the bottom of the reser-
voir a cock E is provided. A suitable lever mechanism h F connects this cock E
to the hand-lever H, so as to communicate the movements of the latter to the
cock E. It will be easily understood from the accompanying drawing that the
cock E is closed when the brake is taken off, while it will open, when the brake
is put on. The cooling medium flows into a funnel T located below the cock E
of the water reservoir and from there through a tuber into the dish-shaped
brake-wheel A.
The construction shown in the drawing only represents one form of construc-

page_text: tion of my mechanism, but evidently I do not limit myself to brakes actuated
by brake-blocks, but I also employ my mechanism with brakes actuated by bands.
The construction remains the same and the cock of the water reservoir is con-
nected to the brake-lever or hand lever so as to be controlled thereby.
Cul 1
1900
improvements in cooking mechanism or brake-uists.
I, GOTTLIEB DAIMLER, of Cannstadt, in the Kingdom of Würtemberg, in the
German Empire, 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:―
I.
The present invention relates to improvements in brakes, and has for its object
a mechanism for cooling the brake while it is "on;" thereby preventing the
running hot of the brake blocks.
:
7.
My invention essentially consists of a water reservoir, the cock of which opens.
when the brake is put on. As soon as the brake. is taken off again, the cock
of this water reservoir is automatically closed- and no cooling medium can flow
out. The cock of the water reservoir is suitably connected to the lever of the
brake, so as to be controlled thereby or by the hand lever of the, brake. By
means of my invention it is possible to actuate a brake for as long a period as.
necessary without running the risk of the brake-wheel or pulley running hot
or bursting. At the same time it is impossible that wooden brake blocks should
commence to burn, when the brake is put "hard on or for a long time.
"
My mechanism can advantageously be employed for vehicles of all kinds driven
by any power. In employing my mechanism and my particular brake pulley
the repairs of the brake will be considerably lessened and the wearing out of
the tvrés, éspecially the caoutchouc tyres used for carriages will be obviated.
In winding engines my mechanism can be advantageously used as the diameter
of the brake pulleys may be less than of the brake pulleys which were necessary,
up till now for such engines.
+
My invention will be more fully described with reference. to the drawing filed
with the Provisional Application, in which similar letters denote similar parts
throughout the different views; and in which;-..
Figure 1 shows a side-elevation of my mechanism, &
. I
Figure 2 shows a transverse section of the brake pulley according to my
invention.
T
A
A is the brake pulley having a dish-form as represented in vertical section in
Figure 2. In the 'example illustrated this brake is scotched by the brake-blocks
on the levers B B¹. The brake-block levers B B are suitably connected to a
hand-lever H movable' round an axis C.
+
P
f.
"
D is a reservoir containing the cooling medium. On the bottom-of-the reser-
voir a cock E is provided. A suitable lever mechanism h F connects,this cock E
to the hand lever H; so as to communicate..the movements of the latter to the
cock E 1t will be easily understood from the drawing.. that the
cock E is closed, when the brake is taken off, while it will open, when the brake
is put on. The cooling medium flows into a funnel T located below the cock E
of the water reservoir and from there through a tuber into the dish-shaped
brake-wheel A.

page_text: The construction shown in the drawing only represents one form of construc-
tion of my mechanism, but evidently I do not limit myself to brakes actuated
by brake-blocks, but I also employ my mechanism with brakes actuated by bands.
The construction remains the same and the cock of the water-reservoir is con-
nected to the brake-lever or hand-lever so as to be controlled thereby.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
An improved mechanism for cooling brake discs consisting of a reservoir con-
taining a cooling medium, said reservoir having a cock which automatically is
opened when the brake is put on and inversely, for the purpose and substantially
as described.