Improved Coupling for Mining Trucks and the like.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improved Coupling for Mining Trucks and the like.
I, CARL KOCH, Works Foreman, Zeche ver. Karolinenglück, near Hamme,
Kreis Bochum, Germany, do hereby declare the nature of my invention and in
what manner the same is performed to be particularly described in and by the
following statement :—
The object of the present invention is to produce a coupling of simple construction
and by means of which a quick, safe and convenient coupling of the trucks in mining
works can be effected and at the same time any danger of the unintentional
uncoupling of the trucks be avoided.
In order to attain this end I have constructed a coupling which consists mainly
of a metallic piece similar in form to the link of an ordinary chain, but broken
through at about the middle of one of the longer sides. The two ends where the
link is broken are rounded out for the reception of a plug to which is rigidly
attached a plain or threaded rod which passes through a hole in the opposite side
of the link and is guided therein, so that the said plug can be raised out of, or
dropped into the space between the two ends of the broken or mutilated link.
The coupling is effected by raising the plug, passing the coupling hooks of the two
trucks to be coupled into the said broken or mutilated link and then dropping the
plug again into its position between the ends of the link.
In order to make this Specification inore easily intelligible reference is had to
the accompanying drawings in which similar letters denote similar parts throughout
the several views:
Fig. 1 shows two trucks coupled together by my improved coupling.
Fig. 2 is a side elevation of the coupling link with the plug in position between
the ends of the same.
Fig. 3 shows the same elevation with the plug raised.
Fig. 4 is a plan and
Fig. 5 a sectional plan of the link on line in Fig. 3.
A is the link formed as shown in Fig. 3 with an opening at a¹ having its sides or
edges rounded out and made sloping as shown, for the reception of the plug
e. The
latter is mounted on the rod d which is guided in the upper shank of the link and
may be smooth as shown in the drawing where it simply slides in the guide hole c
or it may be provided with a thread and made to turn in an interior thread in the
guide hole for greater security.
When the hooks bb of the two trucks to be coupled, have been passed into the
coupling link, the same is closed either automatically by the plug falling into
the orifice of its own weight or the said plug may be screwed into place as the case
may be.
In the former case the link should be used with the plug down (Fig. 1).
Having now particularly. described and ascertained the nature of my said
invention and in what manner the same is performed I declare that what I
claim is :-
1-A coupling for mining trucks consisting of a broken or mutilated link a
having its ends hollowed out as described, a plug e to fill out the space between the
ends, a stem d rigidly attached to said plug and guided in a guide hole in
the opposite side of the said link, the whole device to operate, in the manner and
for the purpose substantially as described.

page_text: 2-In the device as covered by Claim 1 a screw thread on the stem d and an
.interior thread in the guide hole for the purpose substantially as described.
Dated this 17th day of November 1892.
REGINALD W. BARKER,
Applicant's Agent.