An Improved Tug Stop for the Shafts of Vehicles.
Year: 1893

page_text: Date of Application, 24th Jan., 1893
Complete Specification Left, 24th Nov., 1893—Accepted, 30th Dec., 1893
PROVISIONAL SPECIFICATION.
An Improved Tug Stop for the Shafts of Vehicles.
HENRY CLARK 30 Crawford Street Cold Harbour Lane Camberwell S.E.
Engineer, do hereby declare the nature of this invention to be as follows:-
An improved tug stop for the shafts of carriages, carts, or other vehicles, with
no loose parts to be lost or mislaid, and no tools required for altering the position
of the stop.
This invention consists of a metal plate recessed on underside to receive a steel
spring, and with three oblong recesses, in which are hinged stops with square
shoulders to take the strain of the tug. The stops not in use are closed down flush
with the plate and the spring underneath prevents them from opening, and at the
same time keeps the one in use firmly in its position. At the end of each stop is a
small recess in the plate to enable the point of the finger to be inserted to raise the
stop to the vertical position.
Dated this 23rd day of Januar 1902
COMPLETE SPECIFICATION.
An Improved Tug Stop for the Shafts of Vehicles.
I, HENRY CLARK, of 30 Crawford Street, Cold Harbour Lane, Camberwell S.E.,
Engineer 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, that is to say :-
This improved tug-stop consists of a metal plate with oblong recesses in which
are hinged stops which, when open, take the strain of the tug. The stops not in
use are closed down flush with the plate and springs underneath prevent them
from opening, and the same springs hold them firmly in position when open.
And in order that my said invention may be fully understood I will now proceed
to describe the same with the aid of the accompanying sheet of drawings in which
Figure 1 is an elevation of my improved tug-stops attached to the side of a shaft,
Figure 2 a plan of same, Figure 3 a longitudinal section taken on line 1-1 of
Figure 1, and Figure 4 a transverse section taken on line 2-2 of Figures 1, 2
and 3.
A is the shaft, B a metallic plate secured by screws or otherwise to the said
shaft, CC and C are openings or recesses in the said plate, D D1 and D2 are
hinged stops fitted into the said openings and turning therein on hinge pins E E¹
and E respectively so that they may be closed into the said openings with their
outer faces flush, or more or less nearly so, with the surface of the plate B as shown
at C and C², or opened ont so as to stand at right angles thereto as shown at C¹.
F F1 and F are springs secured at one end to the back of the plate B (which
may be recessed as shown at Figures 3 and 4 to receive them) and bearing at their
other and free ends against the part of their corresponding hinged stops D Di
and D' beyond the hinge pins E E' E' so as to retain the hinged stops in their
closed positions (see the stops D and D2). When the stops are open the said
springs retain them in that position by bearing upon their back edges as shown
clearly in connection with the stop D' in Figure 3.
The openings or recesses C C C are bevelled as shown clearly in Figure 4, and
the stops D D and D are similarly bevelled to fit against the bevels in the
recesses when in the closed position.

page_text: It will be seen that when a stop, as D¹ for example, is in its open position it bears
against the back edge C³ of the opening or recess and against shoulders C formed
by the ends of the bevelled edges of the recess so that the strain exerted on the
stop by the tug strap in the direction of the arrows in Figures 2 and 3 is transmitted
to the plate B instead of being supported by the hinge pin.
Recesses G are formed in the plate B to enable the point of the finger to be
inserted to open out the stop.
It will be understood that the three stops afford three different positions for the
tug strap on the shaft, that stop being opened out which is best suited for the
required position of the tug strap, which comes immediately behind the opened
stop, the other stops which are not in use being kept in the closed position.
I have found that the three stops afford sufficient means of adjustment for the
tug strap on the shaft in most cases but it is obvious that the plate may be adapted
with any other number of stops that may be found necessary or desirable.
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 :-
First. The improved tug stop for the shafts of vehicles which consists of a
plate B having stops D D D hinged thereto and adapted to close into recesses
in the said plate substantially as described with reference to the accompanying
drawings.
Second. In a tug stop for vehicles the combination of a plate B, stops D D¹ D'
hinged thereto and springs F F F for retaining the said stops in their closed or
opened positions substantially as described with reference to the accompanying
drawings.
Third. The improved tug stop constructed, arranged and operating substantially
as described.
Dated this 02-1 Novemba 1000
HENRY CLARK,
Per F. Hilton,
115, Cannon Street, London, Agent.