IMPROVEMENTS IN OR CONNECTED WITH THE DRAW GEAR OF RAILWAY " ROLLING STOCK
Year: 1879

page_text: LETTERS PATENT to James Wallace, of, No. 29, King Street, Wigan, in the
County of Lancaster, Steel and Iron Merchant, for the Invention of
IMPROVEMENTS IN OR CONNECTED WITH THE DRAW GEAR OF RAILWAY
"
ROLLING STOCK."
Sealed the 23rd April 1880, and dated the 27th October 1879.
PROVISIONAL SPECIFICATION left by the said James Wallace at the Office
of the Commissioners of Patents on the 27th October 1879.
JAMES WALLACE, of No. 29, King Street, Wigan, in the County of Lancaster,
IN
"IMPROVEMENTS
Steel and Iron Merchant.
OR CONNECTED WITH THE
DRAW GEAR OF RAILWAY ROLLING STOCK."
My Invention relating to the draw gear of railway rolling stock has reference to
the means of fastening the ends of the draw bars at or about the centre of the
wagon or truck (for example).
According to the ordinary method of attaching the draw bars to the vehicles
iron boxes are employed (enclosing an elastic ring or buffer), which are liable to
fracture on the sudden jerking of the draw bars when the vehicles are set in
motion. Now my Invention has for its object obviating or minimizing the risk of
I
fracture, and rendering the elastic ring or buffer more durable; for this purpose
employ two discs of steel or other suitable material, which are grooved or recessed
for the reception of the elastic ring or buffer between them, and are perforated for
the passage of the draw bar. These discs with the elastic ring or buffer interposed
are attached to the underframing of the vehicle, and the draw bar is passed through
the whole and secured by a nut or other convenient means.
The elastic ring or buffer is made of round india rubber without any, square
edges, and is further protected by the provision of a steel or other metal neck or
collar lining inside the ring, and through which the draw bar passes.
The Invention is also applicable to through-drawbars extending from end to end
of the vehicle, the draw bar boxes being, however, in this case placed outside the
vehicle near the hook at each end.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Wallace in the Great Seal Patent Office on the 24th April
1880.
JAMES WALLACE, of No. 29, King Street, Wigan, in the County of Lancaster,
Steel and Iron Merchant. "IMPROVEMENTS IN OR CONNECTED WITH THE
DRAW GEAR OF RAILWAY ROLLING STOCK."
My said Invention relating to the draw gear of railway rolling stock has
reference to the means of attaching the draw bars to the vehicle, and it is applicable
both to divided draw bars, the ends of which are fastened at or about the centre
of the vehicle, and to through-draw bars which extend from end to end of the
vehicle.
According to the ordinary method of attaching the draw bars to the vehicles
iron boxes enclosing an elastic ring or buffer are employed, but these boxes are
liable to fracture on the sudden jerking of the draw bars when the vehicles are set
in motion.
Now my said Invention has for its object obviating or minimizing the risk of
fracture, whilst at the same time diminishing the wear and tear of the elastic ring
or buffer. For this purpose I employ two discs of steel or other suitable material,
which are grooved or recessed for the reception of the elastic ring or buffer between
them, and are perforated for the passage of the draw bar. The interior portion of
each disc at the part through which the draw bar passes is formed with a neck or
collar which protects the elastic ring or buffer from the rubbing action of the draw
bar, the elastic ring or buffer itself being moreover made of round india rubber
without any square edges liable to injury.
When the Invention is applied to divided drawbars, the discs with the elastic
ring or buffer interposed are attached to the under framing of the vehicle at or
about the centre thereof, and the draw bar is passed through the whole and secured
by a nut or other convenient means. In the case of through draw bars extending
from end to end of the vehicle, the discs with the elastic ring or buffer interposed
are, by preference, placed outside the vehicle near the hook at each end.
In order that my said Invention may be perfectly understood I shall now
proceed more particularly to describe the same, and for that purpose shall refer to
the several Figures on the accompanying Sheet of Drawings, which illustrate a
mode of carrying out the said Invention as applied to divided draw bars.
Figure 1 of the accompanying Drawings represents a plan, partly in section, of
the under framing of a wagon with my said Invention applied thereto, and Figures
2, 3, and 4 are details of the Invention; Figures 2 and 3 illustrating respectively
the two discs, and Figure 4 shewing the elastic ring or buffer. A, Figure 2, and
B, Figure 3, are two discs of steel or other suitable material, each of which is
provided with an outer flange or rim a and an inner flange or neck b, so as to form
a recess or cavity c for the reception between the two discs of the elastic ring or
buffer C, Figure 4, an opening & being left at the centre of the discs for the passage
of the draw bar. In applying the Invention to a vehicle the disc A, which is
provided with suitable lugs, is attached by bolts and nuts e to the underframing
D, and the elastic ring or buffer C having been inserted in the recess or cavity c of
the disc A, the disc B is placed over the elastic ring or buffer so that the latter
shall be enclosed in a species of chamber formed by the recesses or cavities c of the
two discs. The draw bar E is then passed through the whole and secured by a
nut for other convenient means. A similar arrangement is applied, as shewn, to
both ends of the vehicle.
By constructing the draw bar boxes in the form of two discs the liability to
fracture is obviated or greatly diminished, whilst the inner flanges or necks b of
the discs protect the elastic ring or buffer C against the rubbing action of the draw

page_text: bars, the clastic ring or buffer itself being moreover made of such a rounded section
as not to present projecting edges liable to injury.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider to be novel and original,
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters is,―
Constructing draw bar boxes of two discs with flanges or projections for
protecting the interposed elastic ring or buffer, all substantially as hereinbefore
described.
In witness whereof, I, the said James Wallace, have to this my Specification
set my hand and seal, the Eighth day of April, One thousand eight
hundred and eighty.
Signed, sealed, and delivered by
the said James Wallace, in the
presence of,
WM. HY. WILLYROSE,
Clerk with Messrs. Byrom & Bell,
Solicitors,
Wigan.
JAMES WALLACE (L.S.)