Improvements in Couplings for Traction Waggons and the like.
Year: 1895

page_text: PROVISIONAL SPECIFICATION...
Improvements in Couplings for Traction Waggons and the like.
I, DAVID GRAY, of the Firm of Messrs. David Gray and Son, of Holburn, in
the City and County of Aberdeen, North Britain, Wheelwright and Blacksmith, do
bereby declare the nature of this invention to be as follows:-
This invention relates to improvements in couplings for traction waggons and
the like.
i
In carrying out my said invention I construct the forecarriage or bogie as a
rectangular frame having the necessary means provided on it, for carrying the
lower ring of the turn plate or table; said ring being formed' or' provided with
cross arms or struts for carrying the turning pin or pivot. The front and back
bars of the said frame are connected to each other, near their centres, by two.or.
more stay bolts which may be provided at their outer ends with suitable plates or
washers. Inside the said frame and to the back of the front bar thereof I mount
an arrangement of two half elliptical or other springs, the ends of which are
connected to pins to which are attached the rear euds of two draw bars or 'bolts
which pass through the front bar of the frame and are attached at their outer ends
to the coupling links.
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The whole thus forms an efficient spring coupling for traction waggons and the
like, and owing to the springs being mounted within the frame of the forecarriage
they are out of the way and therefore not so liable to damage.
Dated this 21th dex of Auíril 1805
JOHNSONS,
115 St. Vincent Street, Glasgow, Petitioner's Agents.
improvements in Couplings for Traction waggons and the дKʊ.
1, DAVID GRAY, of the Firm of David Gray and Son, Wheelwrights, Hardgate,
in the City and County of Aberdeen, North Britain, 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 improvements in couplings for traction waggons and the
like, but has more particular reference to a spring draw bar for same, and it may
also be employed for lorries, carts and other vehicles, and has for its object to
provide a cheap spring draw bar which will be out of the way and also more
efficient and stronger than those hitherto employed.
In carrying out my said invention I proceed as is illustrated in the accompanying
drawings.

page_text: carrying the turning pin or pivot a The front Bar B and the back bar (not shown)
of the said frame A are connected to each other, near their centres, by means of
two or more stay bolts. C, which may be provided at their outer ends with plates or
washers, though I prefer to employ the arrangement as shown, that is two stay
bolts C.near their centres and two outside bolts Call passing through a metal
plate at their outer ends.
Inside the said frame A and at the back of the front B, I mount an arrangement
two half elliptical or other springs D, D', tlie ends of which are connected to the
inuer ends e of two draw bars, links or bolts E by means of pined or their equivalents,
as shown in detail l'igure 3; the said draw bolts E are connected, after passing
through the front B of the frame to the ends of the coupling. rod. F which also has
the rear ends of the coupling links Gattached to it there beinga tube Flinterposed
between the ends of the links:G, as hitherto, for keeping them in position as well as
to enable them the better to withstand strains.. Or as a modification, I may employ
a single spring baving forked ends.
The whole thus forms. an efficient coupling having a strong spring draw bar
mounted within the forecarriage, or bogie in such a manner as to be out of the way.
and so be less liable to damage...
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:
Having now particularly described and ascertained' the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what
claim is
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1st. The general arrangement, construction and combination of the various parts
constituting my improvements in couplings for traction waggons and the like,
substantially as hereinbefore described and shown in the accompanying drawings.
2nd. In couplings for traction waggons and the like, the arrangement of one or
two half elliptical or other springs inside the forecarriage or bogie and below the
lock ring thereof, substantially as and for the purposes herein before described and
shown in the accompanying drawings.
:
3rd. In couplings for traction waggons and the like, the means for connecting
the ends of the spring or springs to the ends of the coupling links, substantially as
herein before described and shown in the accompanying drawings.
Dated this 25th day of January 1896.
JOHNSONS,
115 St. Vincent Street, Glasgow, Applicant's Agents.