IMPROVED DRAW BARS FOR RAILWAY ROLLING STOCK OR OTHER VEHICLES
Year: 1876

page_text: LETTERS PATENT to Richard Baxendale and Joseph Heald, both of Chorley,
in the County of Lancaster, Wagon Builders, for the Invention of "IMPROVED
DRAW BARS FOR RAILWAY ROLLING STOCK OR OTHER VEHICLES."
Sealed the 11th August 1876, and dated the 24th February 1876.
PROVISIONAL SPECIFICATION left by the said Richard Baxendale and Joseph
Heald at the Office of the Commissioners of Patents on the 24th February
1876.
RICHARD BAXENDALE and JOSEPH HEALD, both of Chorley, in the County of
Lancaster, Wagon Builders. "IMPROVED DRAW BARS FOR RAILWAY ROLLING STOCK
OR OTHER VEHICLES."
One way of coupling the draw bars in its own vehicle consists of a connecting
box or coupling nut shape, but sufficiently long to well take hold of each end of the
two bars, such box being screwed inside, and the two ends of draw bars screwed to
correspond.
Another incthod we employ, we take the ordinary short, draw bars screwed in
the usual manner with right or left-hand threads, the distance or space between
the two ends of these draw bars is filled in with a piece of iron same size screwed
at each end, and connected by two box nuts or their equivalent.
Where we use one coupling box, as in the first arrangement, we apply an elastic
spring of steel, india-rubber, or other equivalent against the headstock, or outside
transom of vehicle, with or without a metalic plate between the elastic spring and
timber, and another such plate between the shoulder or hook and elastic spring.
These plates and springs are put on the draw bars to their places before the said
draw bars are coupled. After the draw bars are coupled we then secure the position
of the same with a covering of plain angle, tee, channel, or other suitable shaped
iron, or other equivalent, or a partial covering to protect the spring and to prevent
the turning round of the draw bars after being properly coupled. The internal
shape and size of these coverings are made to freely slip over the draw bar and
other washer or plate named, and of such shape as the said washer may be applied.
These coverings are then firmly bolted to the timber.
When round washers are used against the draw bar neck, one way for preventing
the twisting of draw bar will be by the use of hook bolts which secures the

page_text: covering when the hook ends (or reverse) will be inside the covering, and one or more
parts of the draw bar washer will have a piece punched or otherwise taken out
suitable to the hook or other shaped bolts projecting inside the said covering. Due
care being taken to allow only such liberty in connection with the draw bar neck
and washer as will not interfere with the necessary freedom of draw bar on the
elastic spring.
In the event of channel iron being used, no base or washer plate is necessary.
When the short draw bar is used or converted to the manner of our Patent, we
cither use the way already described, or so arranged the length of draw bar that
when the internal threaded box or nuts are screwed on the said draw bars to a
suitable distance this said box or nut must at the same time be screwed against a
washer with an elastic spring between the said washer or washers and the middle
bearer or transom; also when convenient we make use of the same or similar. We
use the same or similar box or nuts for containing the elastic spring as may be
at the time used on any vehicle then desired to fit with our principle of draw
bar.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Richard Baxendale and Joseph Heald in the Great Seal Patent Office
on the 22nd August 1876.
RICHARD BAXENDALE and JOSEPH HEALD, both of Chorley, in the County of
Lancaster, Wagon Builders. "IMPROVED DRAW BARS FOR RAILWAY ROLLING STOCK
OR OTHER VEHICLES."
Fig. 1 is frame of a railway wagon with the draw bar coupled in its own vehiclo
by screw box with right and left-hand thread, or both right hand and lock nuts
for security (if required). A, A, are the two draw bars screwed into screw box B;
C, C, are two lock nuts to secure and insure their firmness when screwed up to the
desired tension; D, D, are the draw bar boxes secured to the frame in the customary
way. In the centre of this box is a square hole for the draw bar to pass through
as usual likewise, but, we form a box here as shown in sectional end of Fig. 1, and
larger section Fig. 2; E is a washer of india-rubber or other equivalent which is
kept in its required place by washer plate F, which when in place is again held
and pressed against the india-rubber washer or spring, or its equivalent by shoulder
formed on the hook end of draw bar at G. Where we make the box of cast metal
we sink a hoop on the edge as at H (if required).
Fig. 2 is a larger section of the same.
Fig. 3 is a frame of a railway wagon, same as Fig. 1, but has our second
method of bar connection shown. a, a, are the two ordinary short draw bars
screwed in the usual manner at the ends at b; c is a piece of iron screwed at the
ends with right and left hand or right hand threads; this is connected to and
connects the two draw bars together and makes them as one; d, d, are screw
boxes; e, e, lock nuts; f, f, is draw bar boxes into which fits washer plate g, g,
through which passes the screwed ends of draw bar a; is an elastic washer or
spring or other equivalent. This may press against a thickness of metal as shown
at the bottom of draw bar box f, or may press against the cross bar of frame i, i.
The same may likewise apply to the transom beam in frame of Fig. 1, marked I;
or we may put a loose metalic plate between the timber and elastic or other
springs.
Fig. 4 is an enlarged section of method applied on Fig. 3.
Figs. 5 and 6, are simple methods of applying open draw bar boxes made of
various shaped wrought iron simply turned and welded up; Fig. 6 is simply a piece
of double sided channel iron cut off and punched for bar and bolts. When round
washers against draw bar necks are used, we prevent the twisting of draw bar by
hook bolts, which likewiso serve the purpose of securing the covering. Where

page_text: desirable we cover the working or threaded parts of draw bars with angle, tee,
channel, or other shaped iron, for the double purpose of protection to springs and
to prevent the nuts or screw boxes from turning round.
Having described the nature of our Invention and several ways of applying it,
we will now proceed to show its effect on the frame of the vehicle while in use, and
how it should be put together when the two draw bars are put into the frame, the
elastic or other spring cushions should be put into the draw bar boxes, the washers
of metal put against them, and the draw bars then passed through forced firmly up
to the cushion of elastic or other spring, and there connected by the screw box or
boxes, and locked up by nuts (if required). And when after a time of wear and
tear the cushions have given way by constant shake and compression, and the draw
bars become loose, by backing the lock nuts and screwing up the boxes the bars
will be made as firm as ever.
One great advantage in these draw bars is that each vehicle bears it own strain,
and instead of having a tendency under sudden jerks or strains to dismember the
framing, the jerk or strain is broken by the cushioning of the elastic washer, spring,
or other equivalent. The coupling or connecting screws likewise help to support
and keep the frame together; the vehicles will therefore of necessity be much
stronger, firmer, resist more rough usage, and wear much longer than any of the
ordinary make.
We do not confine ourselves to the precise details we have had occasion to
describe and refer to, but what we claim as secured to us berein is,-
The methods of fixing, cushioning, and connecting draw bars for railway rolling
stock or other vehicles (or their mechanical equivalents), substantialy as and for the
purposes herein-before set forth.
In witness whereof, we, the said Richard Baxendale and Joseph Heald, have
hereunto set our hands and seals, this Twith day of August, in the year of
our Lord One thousand eight hundred and seventy-six.
JOSEPH (L.S.) HEALD.
RICH". (L.S.) BAXENDALE.