Year: 1888

page_text: Date of Application, 17th July, 1888
Specification Accepted, 17th Aug., 1888
I, DANIEL MONROE COWHER, of Mapleton Depot, in the county of Huntingdon
and State of Pennsylvania, United States of America, Miller, do hereby declare the
nature of this invention and in what manner the same is to be performed to
be particularly described and ascertained in and by the following statement :-..
My invention relates to improvements in car-couplings and it consists in certain
novel features, hereinafter described and claimed.
In the accompanying drawings
Fig. 1 is a view showing the draw-head in longitudinal section and the interior
parts in side elevation.
Fig. 2 is a detail perspective view of the trigger-supporting block and
Fig. 3 is a similar view of the trigger.
Referring to the drawings by letter A designates the draw head having the usual
opening in its front end for the entrance of the link. At its rear closed end the
draw-head is provided with a transverse shoulder B against which the rear end of the
trigger supporting block C, impinges.
This trigger supporting block, C, is secured within the draw head by means of a
transverse pin D inserted through the rear end of the same and the sides of the
draw head.
The trigger supporting block has a rear extension, E, which impinges upon the
shoulder, B, above mentioned and thereby prevents vertical movement of the said
block.
The bottom of the block at the front end of the same is cut away as shown at F
thereby providing the shoulder, G which prevents the coupling-link entering the
draw-head to too great an extent for the proper operation of the device.
In the body of the block I form the downwardly and forwardly inclined recess H
the lower end of which enters the cut away portion F. The trigger I works in this
recess H and the bottom wall of the recess is provided with a transverse stop or
shoulder J which is engaged by a similar transverse shoulder K on the underside of
The
the trigger so as to prevent the said trigger from sliding out of the said recess.
lower end of the trigger has a recess cut in one side so as to provide the extension L

page_text: which when the trigger is in its lowered position will be arranged on the central
longitudinal line of the draw head so as to be directly in the path of the entering
coupling-link.
The operation of the device will, it is thought be readily understood. The pin is
supported in the front end of the draw-head by the trigger in the usual manner as
will be readily understood. When the link enters the draw-head, it contacts against
the front face of the end of the trigger and forces the same upward in the recess in
the trigger supporting block. The support of the coupling pin is thus removed and
it at once falls into engagement with the link as will be readily understood.
When it is desired to uncouple the device the pin is raised, when the trigger will at
once automatically slide into the proper position to support the pin in its position.
The link will be drawn from the draw head by the receding car and the trigger
supporting block is allowed sufficient pivotal play to ride freely over the end of the
link as it leaves the draw head.
It will be seen that I have provided a very simple and efficient coupling and its
advantages will be readily appreciated.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
,
1. The combination with the draw..head having a rear transverse shoulder B, of the
trigger supporting block having a rear extension E adapted to impinge upon the
shoulder B and the trigger working within the body of said block substantially as
specified.
2. The combination of the draw-head, the block C, secured within the same and
having its lower front portion cut away and having an inclined recess within its body
communicating with the cut away portion and a trigger working in said inclined
recess, substantially as specified.
Dated this 17th day of July 1888