An Improved Coupling for Continuous Draw-gear for Railway Wagons and Carriages.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
An Improved Coupling for Continuous Draw-gear for Railway
Wagons and Carriages.
I, GEORGE BARKER BOWLES, of 49 Trajan Avenue, South Shields, in the County
of Durham, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved coupling for continuous draw-gear for
railway wagons and carriages. Of the two draw rods or bars to be coupled
together the end of one forms a single eye and the end of the other a double eye.
The double eye has one T headed link or a link with any other suitably shaped,
head, or a flat bar connected to it by a pin or bolt, and the single eye has two
Theaded links or flat bars connected to it in a similar manner. When in position
the single link is placed between the other two with the T head of the one opposite
the Theads of the two, and the three are held together by two or more suitable
washers or collars which bear against the T heads. An indiarubber, spiral or
other spring or springs is or are inserted between the washers. The cross-section
of the three links together where they pass through the washers and spring may
be approximately a circle, while the part outside of the washers may be left
rectangular. When there is a pull on the draw-rod the T heads will press
against the washers and thus compress the spring. The position of this coupling
on a wagon is generally at some intermediate position between the ends of the
wagon.
Dated this 17th day of October 1896.
HERBERT HADDAN & Co.,
Agents to the Applicant.
An Improved Coupling for Continuous Draw-gear for Railway
Wagons and Carriages.
I, GEORGE BARKER BOWLES, of 49 Trajan Avenue, South Shields in the County
of Durham, 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:-
This invention relates to an improved coupling device for continuous draw gear,
for railway wagons or carriages and the like.
In the accompanying drawing-Fig. 1 is a plan view of the improved coupling
device. Fig. 2 is a view with parts shewn in action.
Fig. 3 is a cross section.

page_text: The arrangement of the coupling device consists of three bars A B and A¹
constructed of any suitable material and each provided at one end with a cross
head.
These bars are passed through a worm like spring or springs D which can be
constructed of india rubber or metal and which has at one end a washer C and at the
other end a washer C. The bars A A' are passed through the washer and spring
in such a manner that their cross heads bear against the washer C and the bar B
is passed through so as to lie between A and 'A and with its cross head bearing on
the washer C.
The bar B is provided at the opposite end to its cross head with an eye E and
the bars A A' are provided in a similar manner with eyes F, these eyes serve for
connecting the bars of the coupling device with the draw rods of the railway
coaches etc. which may be done by means of bolts or pins.
It will be seen that when there is a pull or draw on the bars A A¹ the effect is
to draw their cross heads and consequently the washer C¹ towards the washer C
and in like manner a draw on the bar B will bring the washer C towards the
washer C; the washers C C thus act on the spring D by which they are kept
apart, the spring effectually resisting the strain brought to bear on the coupling.
The bars may be either square or oblong in cross section throughout their
length that is to say have their faces parallel or the bars A A' Fig. 3 may have
one side in the form of an arc and the bar B may have its edges curved so as to
form when placed together in the manner explained a cross section in the form of
a circle for such of their respective lengths as is contained or passed through the
arrangement of springs and washers. The bars can be contracted in this way when
it is desirable to lessen the diameter of the spring D.
The holes through the washers C and C₁ through which the bars are passed
would be either rectangular or circular according to the shapes of cross section of
the bars.
I do not limit the invention to the shape of the bars and in some cases for the
cross head may be substituted a loose or detachable head of convenient form.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I
claim is:
1. The combination of the three bars A A¹ B having cross heads, with the two
washers C C and the compressible spring D introduced between the washers and
surrounding the bars, the whole substantially as and for the purpose set forth.
2. The construction substantially as described and illustrated of the improved
coupling comprising the bars A A B the washers C C and spring D.
Dated this 10th do of Ll. 1007
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, Agents to Applicant.