Car Coupling. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
JOHN W. THO3JASON, OF SALADO; TEXAS.
CAR-COUPLING.
SPECIFICATION forming part of Letters Patent No. 249,695, dated November 15, 1881.
Applicatin filed March B8, 18M. (No mdiel.)
To all whom it way concern : of the mouth of the draw-head, said plate k
Be it known that I, JolH W. TIo3IAsoN, of being adapted to slide in said recess as the
Salado, Bell county, Texas, have invented a face-platefis moved back and forth. A bole 55
new and useful Improvement in Car-Coup- is formed in the upper end of the draw-head
5 lings; and I do hereby declare that the fol- for the passage of the coupling-pin, and
lowing is a full, clear, and exact description of through the plate c. These holes register with
the same, reference being had to the accompa- each other when the face-plate f is drawn back
nying drawings, forming part of this specifi- by the levers h, allowing the pin to fall down 60
cation, in which- through the link; but when the levers i are
to Figure 1 is aside elevation of my invention. not operated and the face-plate is held out by
Fig. 2 is a vertical longitudinal section. Fig. the tension of the springs i these holes do not
3 is a bottom plan view. Fig. 4is a section on register with each other, and the coupling-pin
the line A A of Fig. 2. Fig. 5 isa perspective is supported in an upright position by the 65
view,showingthe means ofattaching my coup- plate k. By drawing back the levers h the
5i ling to a locomotive. holes are made to register and the coupling-
Myinvention relates to improvements in car- pin falls into position in the link by gravity.
couplings; and it consists, first, of certain de- 1 is a rack-bar adapted to slide vertically in
vices whereby the coupling-pin raised in the an opening in the platform and draw-head. 70
draw-head is supported until the draw-heads m is a horizontal shaftjournaled in thedraw-
20 strike each other in coupling, when the coup- head, and carrying a pinion, n, gearing into
ling-pin falls by gravity,. the rack-bar and operated by a crank on the
My invention further consists of devices end of the shaft in for freight-cars to raise and
whereby a link or pin may be raised separately lower the rack-bar. For passenger-cars a ver- 75
or both raised simultaneonsly, as the case may tical shaft projecting upward through the plat-
25 require, in coupling cars. form, connected by suitable gearing with the
My invention also consists in certain details shaft mi, is employed to operate said shaft and
of construction hereinafter more fully de- raise or lower the rack-bar. The rack-bar is
scribed. held in any desired position by means of a pawl, 80
My invention furtherconsists in the peculiar o, on a rock-shaft, p, journaled in the back part
30 construction of a link attached to the cow- ot the draw-head, said pawlengaging withthe
catcher of a locomotive, as hereinafter more pinion a when the rock-shaft p is turned in one
fully set forth, direction and disengaged therefrom when the
In the accompanying drawings, a is the plat- rock-shaft is turned in the opposite direction. 85
form of a car, to the under side of which the The upper end of the rack-bar i is cut away
35 draw-head b is attached in the usual manner. and provided with arecess, q, forthe reception
The draw-head his provided with recesses con of the projection r of the sliding plate s. The
each side, each having holes in its end bars, d, recess q is made longer than the projection r,
for the passage of rods c, secured to the face- sothatthelatter maybemovedverticallythere- 90.
platef, provided with a central opening fitting in, and the projection is provided with a screw-
40 over the mouth of the draw-head. threaded hole, t, for the reception of the screw
To the inner ends of the rods e is secured a it, passing also through a screw-threaded hole
connecting-rod, g, one end of which engages in the top of the rack-bar, whereby the sliding
with a book on a lever, t, pivoted on the un- plate s can be adjusted vertically on the link 95
der face of the platform, whereby tile face- held between the lower edge of the sliding
45 plate can be moved inwardly against the ten- plate, and in a recess, v, for the link made in
sion of the spiral springs i, arrangedin there- the rack-bar. By this construction links of
cesses c and surrounding the rods e. A lever, varying thickness may be employed in coup-
k, is employed oil each side of the draw-head ling cars and held horizontally in therack-bar,. coo
to draw back the face-plate / held out by the which latter, by means of the pinion, may be
50o tension of the spiral springs i. Theface-plate adjusted for cars of different heights.
f is provided with an inwardly-projecting The upper horizontal face of the rack-bar i
plate , itting in a recess in the upper part is recessed for the reception of asliding plate,
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Thomason, John W. Car Coupling., patent, November 15, 1881; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth170255/m1/2/: accessed June 27, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.