provements in the Construction of Apparatus for Attaching and Releasing the Traces of Common Road Vehicles.
Year: 1893

page_text: Malination
12th Dec., 1893-Accepted, 13th Jan.,
1894
Application 12th Dec., 1893-Accepted, 13th Jan., 1894
COMPLETE SPECIFICATION
mprovements in the Construction of Apparatus for Attaching and
Releasing the Traces of Common Road Vehicles.
I ALFRED Diss of Stanwell Street, Colchester in the County of Essex,.
Builder and Contractor, do hereby declare the nature of this invention and in
hat manner the same is to be performed to be particularly described and
scertained in and by the following statement :-
This invention relates to improvements in the construction of the apparatus for
ttaching and releasing the traces of common road vehicles described in the
Specification to my Patent Number 6301 of A.D. 1885, and its chief object is to
provide better means for securing such apparatus (hereinafter referred to as trace
holders) to the shafts of the vehicle and their connecting cross bar.
The trace holder described in my said former Specification was merely secured
to the shafts and connecting cross bar by several screws which bore all the tractive.
stress of the traces and were liable to be wreuched out thereby; the said screws
also by their insertion considerably weakened the shafts.
I
According to the present invention I place no reliance upon screws or bolts for
resisting the tractive stress upon the trace. holder but I provide the latter with an
extension piece which passes over or under the said cross bar (preferably under).
and has a lug or cheek projecting at right angles therefrom which engages with
the back of said cross bar and takes up all or nearly all the tractive stress.
employ screws or bolts simply for maintaining the trace holder in place, not for
resisting the pull, and find one screw or bolt in the shaft and one in the cross bar
sufficient, and to avoid drilling unnecessary holes I so construct and arrange the
trace holder as to enable me to utilize as the last mentioned bolt the bolt which
ordinarily secures the step to the shaft cross bar.
My invention further relates to means for facilitating the insertion of the spring.
bolt into the hole or eyelet in the trace.
In the accompanying drawings in which similar letters refer to corresponding
parts in all the figures.
Figure 1 is a plan of the apparatus, Figure 2 a side elevation thereof, and
Figure 3 a side elevation looking at right angles to Figure 2.
Parts referred to in my said former Specification and illustrated in the
are correspondingly lettered in present.
drawings accompanying the same
drawings.
A is the metal bracket or casting which in conjunction with the spring bolt d
constitutes the trace holder- is a lug for attaching the same to the shafts (by
preference to the underside thereof as shewn). is the extension piece formed on
bracket A which is shewn as passing under the cross bar C of the shafts, and m is
a lug or cheek on extension piece which engages with the rear of cross bar C..
n is a slot in extension piece or bracket / through which passes the bolt o (Figures 1
and 3) for securing the step iron p (Figures 1 and 2) to the cross bar C. In
0 Figure 1 I have represented the shaft B cross bar C and step iron p in dotted lines.
The employment of a slot n in lieu of a circular hole allows for variation of
position of bolt o in different vehicles.
It will be clearly seen that nearly all the tractive stress of the traces is taken up
by the lug m and that however strong the pull on the trace holder there is no fear
5 of the same being wrenched away.
A further improvement consists in providing the bracket A with the bridge
piece q which connects the main body thereof and the cheek k. This bridge piece
serves as a sort of guide or register and greatly facilitates the attachment of the

page_text: trace, the hole or eyelet ¹ in which would be so situated as to correspond with the
bolt d when the trace rests on the bridge piece and bears against the back of
the space between the cheek k and the main body of the bracket A. The cheek k
is also considerably strengthened by the bridge piece q. is the cover of a
lubricating hole of sufficient size to permit the introduction of vaseline or grease
which I prefer to oil.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is-