Improvements in Brakes for Locomotives.
Year: 1889

page_text: Date of Application, 9th July, 1889-Accepted, 24th Aug., 1889
COMPLETE SPECIFICATION.
Improvements in Brakes for Locomotives.
I, FRANK LANSBERG of the City of St. Louis, in the State of Missouri, one of the
nited States of North America, Mechanical Engineer do hereby declare the nature
this invention and in what manner the same is to be performed, to be :
rticularly described and ascertained in and by the following statement :-
Figure I is an elevation showing one of the shoes in section and illustrative of
y invention.
Figure VI illustrates a triangle for use on certain constructions of locomotives.
My Invention relates to improvements in brakes, more particularly intended for
use on locomotives, and it consists in features of novelty hereinafter fully described,
and pointed out in the claims.
Referring to the drawings, 1 represents part of the frame-work of a locomotive.
2 represents bracket secured to the frame 1 by any suitable means. I have
shown it bolted to the frame, at 3, and provided with a lip or flange 4 fitting against
the lower part of the frame to assist in preventing lateral movement. This bracket
is provided with a lip or flange 5 to which is bolted or screwed, as shown at 6, a
stationary piston 7, over which fits a movable cylinder 8.
9 represents packing rings between the piston and cylinder and 10 an additional
packing ring between the piston and cylinder, which is made in the form of a cup-
leather, and which is held to the piston by means of a ring 11 and screws 12.
13 represents a steam or air pipe discharging into the chamber between the piston
and cylinder, for giving movement to the latter. I have shown this pipe passing
up through the piston, see Figure IV but it may communicate with the chamber
by any manner of connection.
14 represents a strap or yoke passing over the cylinder and connected at its
lower ends to a cross head 15. To the head 15 is secured the upper end of a link 16.
To the lower end of this link 16 the brake shoes 17 are connected, by means of
links 18. The links are suspended from the bracket 2, by means of links 28.
I have shown the strap 14 secured to the cylinder by means of a screw pin 19 on
the upper end of which a cam 20 is fitted.
The operation of the device is as follows:
The air or steam being turned on in the pipe 13 the cylinder 8 is raised or lifted
from the position shown in figure IV. As the cylinder is thus raised, it pulls upward
on the link 16 and moves the inner ends of the links 18 from the position shown in
full lines figure 1 toward the position shown in dotted lines. This forces the
brake shoes outward against the wheels of the locomotive, and produces the brake.
Then as the steam or air is closed off from the pipe 13 and allowed to exhaust the
cylinder falls again, and the brakes are thus released.
By thus arranging a stationary piston and a movable cylinder and by connecting
the brake shoes to the cylinder by means of the strap or yoke, and the cross head
and links a very substantially and cheap device is produced.
In some locomotives, the wheels upon which the brakes work are farther apart
than in others.
The construction of the link 16 that I have described may be used on locomotives
where the wheels are close together, and where they are farther apart, at triangle
like that shown at 21 in figure VI may be employed. This would throw the links 18
farther apart.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
-
1. In a brake for locomotives the combination of a fixed piston, a movable cylinder,
and connection between the cylinder and brake shoes, substantially as and for the
purpose set forth..
2. In a brake for locomotives the combination of a fixed piston, a movable cylinder,
brake shoes, and connection between the brake shoes and cylinder consisting of a
strap or yoke and links, substantially as and for the purpose set forth.
3. In a brake for locomotives the combination of a fixed piston, a movable cylinder,
brake shoes, a strap or yoke connected to the cylinder, the cross head secured to the
lower ends of the strap, a link secured to the cross head, and links connecting the
shoes to the link of the cross head, substantially as and for the purpose set forth.
4. In a brake for locomotives the combination of a bracket 2 secured to the frame of
the locomotive, and having a flange or table 5, the piston secured to the flange, an air
or steam pipe extending up through the piston, a movable cylinder fitting over the
piston, a strap or yoke secured to the cylinder by means of a pin 19 and a cap 20, a
cross head secured to the lower end of the strap, brake shoes, and links connecting the
shoes to the cross head, substantially as and for the purpose set forth.
Dated this Eighth day of July 1889.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.