Thill-Coupling. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
DAVID WILMER TANNER, OF MARLIN, TEXAS.
THILL-COUPLING.
SPECIFICATION forming part of Letters Patent No. 471,199, dated March 22, 1892.
Application filed June 11, 1891. Serial No, 395,936. (No model,To all whom it may concern:
Be it known that I, DAVID WILMIERTANNER
a citizen of the United States, residing at Mar.
lin, in the county of Falls and State of Texas
5 have invented a new and useful Thill-Coup-
ling,of whichthe following is a specification
This invention relates to carriages and
wagons, and especially to the thill-couplings
used therein; and the object of the same is to
io produce certain improvements in devices of
this character.
To this end the invention consists in the
specific details of construction hereinafter
more fully described and claimed, and as illus-
15 trated on the sheet of drawings, wherein-
Figure 1 is a general perspective view of
one of my improved thill-couplings. Fig. 2 is
a central longitudinal section thereof with
the thill-head slightly removed. Fig. 3 is a
20 similar section with the upper member raised.
Fig. 4 is a plan view of the lower member.
Referring to the said drawings, the letter
A designates the axle, over which is passed a
clip C, holding the lower member M of the
25 thill-coupling.
S is one of the shafts, II the enlarged head
on the thill-iron and at the rear end thereof,
and P a pin through this head, all as is com-
mon in devices of this character, with thefol-
30 lowing exceptions.
To the upper side of the lower member Mi
is secured a staple 1, and 2 is the upper mem-
ber of my improved thill-coupling, whichhas
an eye 3 at its rear end, whereby it is pivot-
35 ally mounted on said staple. Both these
members are provided with deep notches 4 in
their front ends, as seen in the drawings. In
the rear end of the notch in the lower mem-
ber is secured a spring-catch 5, having a shoul-
40 der 6 in its body, which engages the upper
corner of the notch in the upper member 2
when the latter is down, and above this shoul-
der the spring-catch curves forwardly, as at
7. By this means when the tip of the catch
45 is drawn forwardly the upper member 2 may
be raised, and when it is again pressed down
it bears upon the curved portion 7 and presses
the spring-catch forwardly, and further down-
ward movement thereof causes the shoulder
50 6 to engage over the member 2 and hold it in
operative position. Each of the side walls
formed by the notch in the lower member isprovided with a recess 10, closed at its outer
end, but opening through the upper side of
this member, and in the lower end of thisre-
cess may be located leather or rubber pack-
ing. Depending from each of the two arms
of the upper member is a tongue 12, prefer-
ably having a rounded lower face, and when
this member is brought down the tongues
pass into the upper ends of the recesses 10,
as best seen in Fig. 2. The rubber packing
11, above referred to, is shown secured to the
lower ends of these tongues, which is its pre-
ferred position.
In operation the upper member is raised,
the head H is passed between the members
and depressed, so that the ends of the pin P
will drop into the recesses 10, and the upper
member is then brought down until the rub-
ber packing 11 on the curved faces of the
tongue 12 bears upon the upper sides of the
ends of the pin P, and the latter is thereby
held in the thill-coupling very securely, the
packing 11 preventing rattling and retaining
what oil may be needed to permit a free
movement of the parts.
This device may be cheaply constructed
and readily applied to any carriage or wagon
now in use, and the recesses 10, by extending i
only part way through the sides of the lower
member M and being covered whenin use by
the upper member 2, will remain for a long
time without becoming filled or clogged with
dirt. I do not confine myself to the exact de- I
tails of construction, as various changes may
be made therein without departing from the
spirit of my invention.
What is claimed as new is-
1. In athiil-coupling, the combination, with 9
a thill-iron having a coupling-pin, of a lower
member having at its front end a notch and
provided with bearing-recesses at opposite
sides of the notch to receive the coupling-pin,
an upper member hinged to the lower mem- 9
ber and having a notch at its front end and
provided with the depending arms arranged
in the bearing-recesses to engage the coup-
link-pin, and the spring-catch secured to the
lower member and arranged in the recess i
thereof and engaging the upper member at
the notch thereof, substantially as described.
2. In a thill-coupling, the combination, with
the thill-iron having a transverse pin through
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Tanner, David Wilmer. Thill-Coupling., patent, March 22, 1892; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth172979/m1/2/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.