Automatic Car Brake. Page: 3 of 3
[2], 1 p. : ill. ; 23 cm.View a full description of this patent.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
292,246
or projection R, secured to the rod S, and which
passes through the slot in the cam, will be
moved toward one end of the slot, and when
the draw-heads are drawn outward, as when
5 the train is in motion, the pin, stud, or pro-
jection will move up into the other end.
Secured to the frame in which the partially-
rotating shaft is pivoted are the supports T,
through which the rods S pass at their inner
io ends. The outer ends of these rods pass
through the brake-beams U. Upon each rod
are placed the sliding sleeve V, the spring W,
and the nut X. Thesleeveserves to compress
the spring against the brake-beam when the
15 rod S is moved endwise, and the nut serves
to shorten the rod, so as to cause a greater or
less pressure of the spring to be exerted
against the rod, and thus apply the brake with
greater or less force. Each brake-beam is
20 suspended from the under side of the frame by
means of the straps, springs, or other supports,
Y, and the brakes attached to this beam are
always held in contact with the wheels when
the draw-head is in its normal position. These
25 springs will have sufficient power to force the
brakes against the wheels with force enough
to hold the car in place upon the rails of any
ordinary grade. As soon as anumber of cars
are fastened together and the train is set in
30 motion, the draw-heads are pulled outward or
forced backward, for the purpose of throwing
the brakes clear of the wheels, according as
to whether the train is being pulled or backed.
If the train is beingpulled by the locomotive.
35 the draw-heads are pulled outward far enough
to operate the levers and withdraw the pressure
of the brakes from the wheels, and in case the
t rain is being backed the draw-heads are forced
inward; but in either case the connecting-rods
40 J are made to movethe partially-rotatingshaftand release the wheels from the brakes. As
soon as the train stops, the pull or push is re-
leased from the draw-heads, and the brakes
are at once applied by means of the springs.
From the above description it will be seen 45
that the brakes are entirely automatic in their
operation, and hence the train is made to do
its own braking.
I do not limit myself to the precise constluc-
tion here shown, for the levers may be con- 50
nected to the draw-heads in different ways.
The manner here shown is most preferable,
but is only one of a number of different ar-
rangenments.
IlHavirg thus described my invention, I 55
claim-
1. In an automatic car-brake, the combina-
tion of the endwise-moving draw-heads, the
levers connected thereto, the connecting-rods
attached to the levers, a partially-rotating 6o
shaft providedwith cams, theconnecting-rods,
springs, and brake-beams, substantially as
shown.
2. The combination of the endwise-moving
draw-head, theleversH I, the connecting-rods, 65
and the intermediate mechanism for operating
the brake-beams, the lever I being slotted so
that its pivot can be adjusted endwise, sub-
stantially as described.
3. The combination,withthepartially-rotat- 70
ing shaft provided with cams, and an operating
mechanism, of the rods, the springs, and the
sleeve, substantially as set forth.
In testimony whereof I affix my signature in
presence of two witnesses.
JOHN D. 3IILLER.
WVitnesses:
J. E. Lown vY.
Search Inside
This patent can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Patent.
Miller, John D. Automatic Car Brake., patent, January 22, 1884; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth170687/m1/3/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.