Improvements in and relating to Carriage Draw-bar Attachments.
Year: 1888

page_text: Date of Application, 7th Mar., 1888
الان
Complete Specification Left, 6th Dec., 1888
Complete Specification Accepted, 15th Jan., 1889
Improvements in and relating to Carriage Draw-bar Attachments.
1, JOHN ROBERTSON, 412 St. Vincent Street, Glasgow, Coach builder, do hereby
declare the nature of this invention to be as follows:-
My invention has for its object the adaptation to carriages and other wheeled
vehicles of an appliance whereby the sudden jolting experienced on the starting of a
vehicle, as also when travelling over rough roads, shall be obviated, and thus ensure
greater comfort to the passengers, as also to reduce the strain upon the horses.
In carrying out my invention, I attach a tube to the front of the body of the
vehicle at any desired height, or to the cross bar of the shafts. Within the tube
above referred to, is a second tube of corresponding length, which is pressed back by
a strong spiral spring; a steel rod terminating at one end in an eye, and having a
screw thread formed upon the other end, is passed through the two tubes and spiral
spring aforesaid, and secured by what is known as a rams horn nut," to which
latter may be attached the chains fixed to the axle of the vehicle.
The draw bar is fixed to the eye of the steel rod above referred to, and it will be
obvious that upon the horse or other animal within the shafts exerting a pull upon the
traces, the first shock or jolt will be absorbed in the tense spiral spring within the
tube aforesaid, and therefore the starting of the vehicle will be gradual instead of
sudden.

page_text: T
аци relating to Carriage Draw Dar Attachments.
I, JOHN ROBERTSON, of No. 412 St. Vincent Street, Glasgow, Coachbuilder, 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 has for its object the adaptation to carriages and other wheeled
vehicles of an appliance whereby the sudden shock experienced at the moment of
starting of the vehicle, as also the jolting when travelling over rough roads is
obviated, thus ensuring greater comfort to the passengers, as also reducing the strain
upon the horse.
In order that my invention may be the better understood I have appended the
accompanying sheet of drawings in which Figure 1 represents an elevational view of
the device or appliance according to my invention, Figure 2 is a sectional elevational
view of same; and Figure is an elevational view of the device, showing the stay
for attachment to the vehicle.
In carrying out my invention I employ two tubes A, B, one capable of moving
telescopically within the other. Within the tube B is arranged a powerful spiral
spring C, the tension of which tends to press the tubes A B apart. A steel rod or
bar D provided with an eye a at one end, and having a screw thread & formed upon
the other end is passed through the tubes and centrally through the spring C. A
ramshorn nut E screwed upon the end 6 of the rod D serves to hold the whole together.
The tube A aforesaid is provided on one side with a stay c Figure 3 to allow of the
attachment of the appliance to the under side of the vehicle at any suitable height and
in any suitable position, so as to bring the device in a direct line with the shoulder
of the horse or the like. The ordinary draw bar is attached (by means of a hook or
equivalent) to the eye a of the rod or bar D, which latter may or may not be con-
nected to the axle by means of chains engaging with the ramshorn nut E aforesaid.
It will be obvious therefore from the foregoing, that upon the horse or other animal
within the shafts exerting a pull upon the traces, the first shock or jolt will be absorbed
in the tense spiral spring C within the tubes A, B, and therefore the starting of the
vehicle will be gradual and smooth instead of sudden as under existing conditions.
Having now particularly described and ascertained the nature of my said invention
and in what maune: the same is to be performed, I declare that what I claim is :-
The improved appliance for attachment to wheeled vehicles for obviating the
sudden shock experienced at the moment of starting said vehicles substantially as
herein described and illustrated in the accompanying drawings.
Dated this Sixth day of December 1888.
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.