Improvements in Double Trees for Tramway Cars and like Vehicles.
Year: 1890

page_text: Date of Application, 16th July, 1890
Complete Specification Left, 15th Apr., 1891-Accepted. 16th May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Double Trees for Tramway Cars and like Vehicles.
We, CHARLES GROOMBRIDGE, Inventor, and WILLIAM ALFRED SOUTH,
Veterinary Surgeon, both of 40 New Bond Street, in the County of Middlesex, do
hereby declare the nature of this invention to be as follows:-—
In double trees for tramway cars, as at present constructed, it sometimes occurs
that the horses kick out the pintle connecting the double tree to the draw bar, or
that this pintle becomes displaced accidentally, and the horses, escaping from the
control of the driver, cause serious injury to pedestrians. Furthermore, when the
horses have to be changed from one end of the car to the other, the driver and con-
ductor are compelled to remove the double tree and its attachments, and to carry
them round to that end of the car to which the horses are to be attached, thus
exposing themselves to danger and inconvenience.
Now, in order to obviate this danger and inconvenience, the double tree, instead
of being rigidly connected with its tongue, is connected thereto by means of a joint
or articulation; and instead of the pintle being loosely dropped through the tongue
and draw-bar, we provide a rivet, or a bolt (furnished with a nut) which, while
giving free play to the double tree, is prevented from being kicked out of place by
the horses, or by accidental removal.
By means of this joint or articulation the double-tree and the whipple-trees can
be turned upwards and over the tongue, and the outer end of each of the whipple
trees may be secured to hooks on the splash board so as to be out of the way when
not in use,
and thus remains as a permanent attachment to the car. Or, if preferred,
the under portion of the double tree may be provided with projections, or pins, on
to which the inner ends of the whipple trees may be hooked when out of use.
The improvements above described are equally applicable to railway waggons,
and to other vehicles travelling on rails and drawn by horses.
ERNEST DE PASS,
78, Fleet Street, London, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Double Trees for Tramway Cars and like Vehicles.
We, CHARLES GROOMBRIDGE, Inventor, and WILLIAM ALFRED SOUTH,
Veterinary Surgeon, both of 40, New Bond Street, in the County of Middlesex, 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, reference being had to the accompanying drawings and to the letters and
figures marked thereon, that is to say :-
In double trees for tramway cars, as at present constructed, it sometimes occurs
that the horses kick out the pintle connecting the double tree to the draw bar, or
that the pintle becomes displaced accidentally and the horses by escaping from the
control of the driver, may cause serious injury to pedestrians. Furthermore, when
the horses have to be changed from one end of the car to the other, the driver and
conductor are compelled to remove the double tree and its attachments and to carry
them round to that end of the car to which the horses are to be attached, thus
exposing themselves to danger and inconvenience.
Now, in order to obviate this danger and inconvenience, the double tree instead
of being rigidly connected with its tongue, is connected thereto by means of a joint

page_text: or articulation; and instead of the pintle being loosely dropped through the tongue
and draw bar, we provide a rivet or a bolt (furnished with a nut) which, while giving
free play to the double trec, is prevented from being kicked out of place by the
horses, or otherwise accidentally removed.
By means of this joint or articulation the double tree and the whipple trees can
be turned upwards and over the tongue and the outer end of each of the whipple
trees be secured to hooks on the splash board so as to be out of the way when not
in use, and thus remain as a permanent attachment to the car. Or if preferred the
under portion of the double tree may be provided with projections or pins onto
which the inner ends of the whipple trees may be hooked when out of use.
The improvements above described are equally applicable to railway waggons
and to other vehicles travelling on rails and drawn by horses.
And in order that our said invention may be readily understood we proceed to
describe the same fully with reference to the accompanying drawings, in which:
Fig. 1 is an end elevation shewing our improved construction of double tree
applied to a tram car. In this figure the double tree is shewn turned up and out
of, usc.
Figs. 2 and 3 are side elevations shewing the method of connecting the double
tree with the draw bar.
In these figures the whipple trees are removed for sake of
clearness.
Fig. 4 is a plan shewing the parts in position ready for coupling to the traces.
a is the double tree, and bare the whipple trees carried thereby. The double
tree is provided with a projection or lug a which enters between the jaws b', ', of
the tongue, and a pin connects these parts together so as to form a hinged
joint or articulation, thereby permitting the double tree to be turned up into the
position shewn by Figs. 1 and 2, and the whipple trees to be hooked onto the
hooks C₁. lig carried by the splash board f. The tongue 6x is permanently connected
to the draw bar d, by a bolt 6, but is able to turn. freely about the said bolt in a
horizontal plane without any chance of the bolt becoming accidentally detached.
is a plate formed in a piece with the draw bar and serving as a support for the
tongue and lug a', so that when the double tree is turned down into the position
shewn by Figs. and it will be effectually supported in its horizontal movements
about the bolt . If preferred, a rivet may be employed instead of the bolt 3,
and the hooks c, c, may also be replaced by eyes.
Each end of the tram car, or other vehicle, is provided with a set of trees so
that when one set is in use the other is turned up and coupled to the splash board,
as already explained.
Having now particularly described and
and in what manner the same may be per
certained the nature of our invention
ined we claim,
1. Constructing and arranging double trees for tram cars, and like vehicles,
whereby the necessity of removing said trees from one end of the car and connecting
them to the other is avoided, and the ccidental detachment of the tongue piece
from the draw bar prevented, substantially as herein described and shewn by the
accompanying drawings.
2. The improved double tree, for tram cars, and like vehicles, wherein the tongue
piece is permanently connected to the draw bar by means of a bolt or rivet, and the
double tree is jointed or articulated to the tongue piece so as to enable the double
tree to be turned up in a vertical plane, said double tree when in its lowered position
resting upon a plate so arranged as to support it in all its positions in a horizontal
plane, substantially as described and shewn by the accompanying drawings.
A 1001
ERNEST DE PASS,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicants.