IMPROVEMENTS IN DRAW-BAR AND COUPLING APPARATUS FOR RAILWAY ROLLING STOCK."
Year: 1882

page_text: LETTERS PATENT to Stephen John Humble and James Walker both of Derby
in the County of Derby Engineers for an Invention of "IMPROVEMENTS IN
DRAW-BAR AND COUPLING APPARATUS FOR RAILWAY ROLLING STOCK."
PROVISIONAL SPECIFICATION left by the said Stephen John Humble and
James Walker at the Office of the Commissioners of Patents on the
9th February 1882.
STEPHEN JOHN HUMBLE and JAMES WALKER both of Derby in the County of
Derby Engineers IMPROVEMENTS IN DRAW-BAR AND COUPLING APPARATUS
FOR RAILWAY ROLLING-STOCK.
This Invention relates to improvements in draw-bar and coupling apparatus for
railway rolling-stock.
This Invention consists of a combination of the ordinary draw-bar with safety
(side) pins and springs the said safety pins, (with springs) being secured to the
buffer plank or other part of the under frame of the vehicle.
In carrying this Invention into effect in a simple form we lengthen the pin
which secures the shackle to the draw-bar hook and pass this pin through the
heads of the two safety pins; the safety pins are passed transversely through the
buffer plank and are fitted with a metallic spring (or springs) of volute, conical,
helical, or other convenient form or a washer of india rubber or other elastic
substance.
By this arrangement if the draw-bar breaks the vehicle will still be drawn by
the safety pins without undue strain.
As a modification the shackle pin may be made part of and solid with the draw-
bar hook and the safety pins may be lengthened and be secured to the cross tie (or
ties of the vehicle frame instead of, or as well as, the buffer plank.
As a further modification one safety pin, attached to or being part of the draw-
bar hook may be employed instead of two pins as above described, or more than
two pins with a spring or springs may be employed.
As a further modification a collar or projection may be formed on the draw-bar
and to this collar or projection a plate may be rivetted, or secured to which the
safety pins with springs may be secured.
As a further modification the safety pins (two or more) may have a back plate
fitted to them which will act on one strong spring, or elastic washer, only instead
of each safety pin being fitted with a separate spring or elastic washer.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Stephen John Humble and James Walker in the Great Seal
Patent Office on the 9th August 1882.
STEPHEN JOHN HUMBLE and JAMES WALKER both of Derby in the County of
Derby Engineers IMPROVEMENTS IN DRAW-BAR AND COUPLING APPARATUS
FOR RAILWAY ROLLING STOCK.
This Invention relates to improvements in draw-bar and coupling apparatus for
railway rolling-stock.
This Invention consists of a combination of the ordinary draw bar with safety
pins and springs the said safety pins (with springs) being secured to or acting on
the buffer plank or other part of the under frame of the vehicle.
In carrying this Invention into effect in a simple form we lengthen the pin
which secures tho shackle to the draw-bar hook and pass this pin through the
heads of the two safety pins; the safety pins are passed transversely through the
buffer plank and are fitted with a metallic spring (or springs) of volute conical
helical or other convenient form or a washer (or washers) of india rubber or other
clastic substance.
By this arrangemont_if_the_draw-bar breaks the vehicle will still be drawn by
the safety pins without undue strain, and the vibration of the draw-bar-is-
reduced.
As a modification the shackle pin may be made part of and solid with the draw-
bar hook or draw-bar and the safety pins may be lengthened and be secured to or
act on the cross tie (or ties) of the vehicle frame instead of, or as well as the buffer
plank.
As a further modification one safety pin attached to or being part of the draw-
bar hook or draw-bar may be employed instead of two pins as above described or
more than two pins with a spring or springs may be employed.
As a further modification a collar or projection may be formed on the draw-bar
and to this collar or projection a plate may be rivetted or secured to which the
safety pins with springs may be secured.
As a further modification the safety pins (two or more) may have a back plate
fitted to them which will act on one strong spring or elastic washer placed centrally
on the draw-bar or otherwise instead of each safety pin being fitted with a separate
spring or elastic washer.
The safety pins or pin above referred to and used with springs or a spring may
be solid or hollow or tubular for the purpose of lightness and compactness and the
draw bar may be arranged to pass through it or them.
The accompanying Drawings illustrate the Invention. The same letters of
reference refer to the same or equivalent parts in each Figure. Fig. 1 is a plan
view of part of the under frame of a wagon in which A is the draw-bar, B B' arc
the two safety pins, C C¹ are steel volute springs, D is the ordinary shackle, E is
the shackle pin, F is the buffer plank, G is the cross tie on which the safety pins
and springs act; J J are the draw plates. Fig. 2 is a plan view of part of the
under frame of wagon or carriage in which the safety pins B and B' and india-
rubber springs (known as Spencer's Patent) are shown, the safety pins and springs
acting on the buffer plank F. Fig. 3 is a side view partly in section of part of the

page_text: under fame of a wagon or carriage in which the safety pins B and B' are secured
to lugs H and H' on the draw-bar A, in this arrangement one ordinary steel spiral
spring is shown which surrounds the draw-bar A and is acted on by the safety
pins B and B through the draw plate J, which together act against the buffer
plank F. Fig. 4 is a side view partly in section of an arrangement in which one
safety pin B is employed which is secured to a lug H on the draw bar A, and with
which one spiral spring (known as the "Timmiss spring") is shown the safety
pin and spring acting on the buffer plank F. Fig. 5 is a plan view of part of the
under frame of a wagon or carriage in which the safety pins B and B' act with an
ordinary conical spring C through the draw-plate J on the buffor plank F, the
draw-bar A being passed through the spring C. Figs. 678 and 9 illustrate the
Invention as applied to railway rolling-stock with central combined coupling and
buffing apparatus. Fig. 6 is a plan partly in section showing a modification in
which a hollow pin or flanged tube B is employed which is screwed to the draw
and buffer bar A, one spring C is employed, the safety tube and spring acting on
the front part of a casing K which is socured to the frame plate L of the under
frame.
Fig. 7 is a plan partly in section of a further modification in which two safely
pins B and B are employed which are secured to lugs H and H' on the draw and
buffer rod A and which are extended through and guided by the plate L, two
springs C and C' are employed which act against the front end of a casing K
secured to the frame plate L of the under frame of the carriage or wagon. Fig. 8
is a plan partly in section of a further modification of the Invention in which Å is
the draw and buffer rod, B and B are the safety pins secured to lugs H H' on the
rod A and C C the springs which act on the front of the casing K secured to the
plate L. Fig. 9 is a plan of a further modification of the Invention as applied to a
radiating central combined coupling and buffing apparatus in which A is the draw
and buffer rod, B B' the safety pins, C C¹ the springs, J J¹ the draw plates so
formed as to be removeable without displacing the central rod A, M is an angle iron
frame, L the buffer plate, N a packing plate, O the radius plate attached to the
under frame of the carriage or wagon, P is a plato secured to the rods A B B'; the
rods A B B and plates JJ' and P are free to radiate right and left in recesses in
the plates ON L, the springs C C¹ and pins B B¹acting through the plate P directly
on the radius plate O.
Fig. 10 is a plan partly in section of a further modification in which a hollow
pin or flanged safety tube B is employed with spring C the front end of the tube
being secured to the draw-bar A by the pin E (between the shackle D and bar A)
the safety tube B and spring C acting on the buffer plank F.
It is obvious from the foregoing descriptions and the accompanying Drawings
that if the draw-bar A breaks the safety pins B B' and springs C C will draw
the carriage or wagon; a further obvious advantage of this Invention being the
reduction of the vibration of the draw-bar and the consequent prolongation of
its life
We do not claim any particular forms of springs as being part of this Invention
especially those referred to as " Spencer's Patent" and "Timmiss's Patent"
Having now described and particularly ascertained the nature of the said Inven-
tion and the manner in which the same is or may be used or carried into effect we
would observe in conclusion that what we consider to be novel and original and
therefore claim as the Invention secured to us by the herein-before in part
recited Letters Patent is
Improvements in draw-bar and coupling apparatus for railway rolling-stock by
the addition thereto or combination therewith of one two or more safety pins, or (as
equivalents) safety tubes, with one two or more springs, acting on the buffer plank
or plate or other convenient part of the under frame of the rolling-stock, or acting
in or on a box or casing or its equivalent attached thereto, for the purpose of
drawing the vehicle in the event of the breakage of the draw-bar and to lessen

page_text: the vibration of the said draw-bar, substantially as herein-before specified and as
described in reference to Fig. 1 to Fig. 10 of the accompanying Drawings
In witness whereof I the said Stephen John Humble have hereunto set my
hand and seal this Seventh day of August One thousand eight hundred
and eighty two
STEPHEN JOHN HUMBLE. (L.S.)