Car-Coupling. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
CLOUD B. CALHOUN, OF BOONSVILLE, TEXAS, ASSIGNOR OF ONE-HALF TO
DANIEL B. WOOD, OF SAME PLACE.
CAR-COUPLING.
SPECIFICATION forming part of Letters Patent No. 515,704, dated February 27, 1894.
Application filed October 11, 1893, Serial No., 487,878 (No model.)
To all whom it nway concer&: car; and a bevel gear-wheel can be secured
Be it known that I, CLOUD B. CALHOUN,a on the outer part of the rod, meshing with a
citizen of the United States, residing at Boons- similar bevel wheel on the lower end of a ver-
ville, in the county of Wise and State of Texas, tical rod running to the top of the car and
5 have invented certain new and useful Im- there provided with a hand-wheel, by which 55
provements in Car-Couplers; and I do declare construction the rod 7 can be manipulated
the following to be a full, clear, and exact de- from the top as well as from the side of the
scriptionof the invention, such as will enable car, when desired. Studs or heavy pins 71
others skilled in the art to which it appertains project up from the rod 7 through recesses 1
to to make and use the same, reference being in the bottom of the draw head and are con- 60
had to the accompanying drawings, and to the nected by links 8 with the outer ends of the
figures of reference marked thereon, which cam plates 3, as shown. The cam plates are
form a part of this specification, formed near their inner ends with the verti-
My invention consists in an automatic car cal slightly curved slots 3a, through which pass
r5 coupler, which, while simple and compact in guide bolts, 9, which are secured vertically 65
its construction, will enable the cars to be in the draw head, and which serve to guide
coupled and uncoupled without any neces- the inner ends of the cam plates in their
sity for going between them; and the inven- movements. The spring actuated cam plates
tion will be hereinafter fully described and are normally held in the position shown most
20 claimed. clearly in Fig. 2, the coiled springs 5 holding 70
Referring to the accompanying drawings, them with their inner ends as close together
in which the same numerals of reference in- as the bolts 9, against which the inner ends
dicate corresponding parts in all the figures, of the cam slots 31 then contact, will permit.
Figure 1 is a perspective view illustrating my The coupling link, 9, is formed with an ar-
25 invention, in position at the end of a car. Fig. row head, as shown; and it will now be seen 75
2 is a top plan view, with the top of the draw- that when two cars provided with my inven-
head removed, and taken on an enlarged scale. tion are brought together, the pointed head
Fig. 3 is a detail view. of the link, which is held horizontally by one
Referring to the several parts by their des- car, will enter the draw head of the other car
30 ignating numerals, 1 indicates the flat draw and sliding between the rounded outer edges 80
head of my invention, which is formed with of the two pivoted cams will press there inner
a large horizontal opening, 2, and a somewhat ends apart against the pull of the springs 5
flaring mouth to facilitate the entrance of the until the arrow head of the link has passed
couplinglink. Within this flat coupling head beyond the inner ends of the cams; when the
35 are mounted the two locking cams, 3, 3. These coiled springs 5 will instantly swing the cams 85
flat cam plates are practically semi-circular back into their normal position so that the
in form, having the rounded outer and straight straight sides of their inner ends will engage
inner edges; and each cam is pivoted near its back of the link head and thus hold the link
outer end on a vertical pivot bolt, 4; the cams securely locked in the draw head, and the
40 being arranged side by side in the draw head cars will thus be automatically coupled to- 90
so as to leave a small space between their in- gether.
ner ends at the central line of the draw head. To uncouple the cars it is only necessary
A coiled or spiral spring, 5, is secured at its for the brakeman, standing at the side of the
forward end to the outer end of each cam, car, to turn forward the crank-handle of the
45 the rear ends of said springs being secured in transverse rod 7, thus, through the stud-bolts 95
the rear of the draw head to verticalbolts, 6. 71 and connecting links 8 pulling the outer
7 indicates a transverse rod which extends ends of the cam plates forward against the
in bearings beneath the draw head, and has tension of their springs 5, causing the cams
a crank handle at its outer end by means of to turn on their pivot-bolts 4 and swinging
50 which itis readily turned from the side of the their inner ends sufficiently far apart (as zoo
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Calhoun, Cloud B. Car-Coupling., patent, February 27, 1894; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth173659/m1/2/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.