Improved Spring Shoe or Holder suitable for use with Pressed Metal under Frames and Bogies for Vehicles.
Year: 1897

page_text: Date of Application, 17th May, 1897
Complete Specification Left, 12th Feb., 1898-Accepted, 12th Mar., 1898
PROVISIONAL SPECIFICATION.
Improved Spring Shoe or Holder suitable for use with Pressed Metal
under Frames and Bogies for Vehicles.
WE, FRANCIS LAWRENCE LANE, Engineer, and THE LEEDS FORGE COMPANY,
LIMITED, Engineers and Ironmasters, both of The Leeds Forge, Leeds, in the
County of York, do hereby declare the nature of this invention to be as follows:-
:-
According to this invention a spring shoe or holder (hereinafter called a spring
shoe) suitable for use with a pressed metal underframe or bogie and adapted to
hold, through a link, one end of a bearing spring, is constructed from a single piece
of plate metal such as mild steel which is cut and pressed to shape so as to com-
prise a depressed central portion from opposite sides of which depend two parallel
or approximately parallel side checks or lugs adapted to carry a transverse pin,
and two flat horizontal end portions from one side of each of which extends in an
upward direction a side cheek or lug adapted to be rivetted to the back or web of
the pressed steel sole-bar of the underframe or bogie whilst the flat end portions
are adapted to be rivetted, to the bottom flange of the said sole bar the arrangement
being such as to give rigidity to the spring-shoe itself and at the same time
additional strength to the corner or bend of the sole-bar to which the spring-shoe
is attached. The strength of the vehicle to which such spring shoes are thus
applied is thereby increased to a considerable extent.
The improved spring-shoe is manufactured as follows:-A single plate of metal
such as mild steel is cut or shaped so as to have in plan view three projections
or lugs, preferably with rounded ends, extending from one side or edge thereof,
one of these projections or lugs extending from the central portion and the other
two from the end portions of the side or edge of the plate, the other or opposite
side or edge of the plate having one projection or lug which extends from the
central portion thereof in the opposite direction to the other three projections or
lugs. After the plate has been thus cut or shaped, it is heated to a suitable
temperature, say about 900° F., and subjected to a suitable pressure between male
and female dies adapted to dish or force inwards or downwards the central portion
of the said plate and likewise to press the central projections or lugs in an inward
or downward direction so as to bring them parallel to each other or approximately
so, the end projections or lugs being pressed so that they extend in the opposite
direction to the central projections, that is to say outwards or upwards. The
plate may be pressed to shape at one operation of an hydraulic or other suitable
press, or the central portion with central projections or lugs may be pressed
inwards or downwards at one operation and the end projections or lugs pressed
outwards or upwards by a second operation. After the spring-shoe has left the
press, its edges may be trimmed or set in the usual manner.
The new or improved spring-shoe is fixed in position by riveting or otherwise
securing the end or upward projections or lugs to the back or web of a pressed
steel sole-bar of a vehicle underframe or bogie, the flat portions at each side of
the depressed central portion being similarly secured to the lower flange of the said

page_text: sole-bar. The central depending projections or lugs thus fixed in position are
provided with a transverse pin to which one end of a bearing spring can be readily
attached by means of a link as well understood
Dated thi 1L 1
1004
Improved Spring Shoe or Holder suitable for use with Pressed Metal
under Frames and Bogies for Vehicles.
WE, FRANCIS LAWRENCE LANE, Engineer, and THE LEEDS FORGE COMPANY,
LIMITED, Engineers and Ironmasters, both of The Leeds Forge, Leeds, in the
County of York, 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:-
According to this invention a spring shoe or holder (hereinafter called a spring
shoe) suitable for use with a pressed metal underframe or bogie and adapted to
hold, through a link, one end of a bearing spring, is constructed from a single piece
of plate metal such as mild steel which is cut and pressed to shape so as to com-
prise a depressed central portion from opposite sides of which depend two parallel
or approximately parallel side cheeks or lugs adapted to carry a transverse pin,
and two flat horizontal end portions from one side of each of which extends in an
upward direction a side cheek or lug adapted to be riveted to the back or web of
the pressed steel sole-bar of the underframe or bogie whilst the flat end portions
are adapted to be riveted to the bottom flange of the said sole bar, the arrangement
being such as to give rigidity to the spring-shoe itself and at the same time
additional strength to the corner or bend of the sole-bar to which the spring-shoe
is attached. The strength of the vehicle to which such spring shoes are thus
applied is thereby increased to a considerable extent.
The improved spring-shoe is manufactured as we shall now proceed to describe
with reference to the accompanying drawings wherein Fig. 1 shows, in plan, a
biank from which the improved spring shoe is made. Figs. 2, 3 and 4 show
respectively in end elevation, side elevation, and plan, the mode of attaching the
improved spring shoe to the pressed metal sole bar of a vehicle.
A single plate 1 of metal such as mild steel is cut or shaped so as to have in
plan view, as shown in Fig. 1, three projections or lugs 1º, 1b, 1° preferably with
rounded ends as shown, extending from one side or edge thereof, one of these
projections or lugs, viz., 1b, extending from the central portion, and the other two,
viz., 1, 1°, from the end portions of the plate, the other or opposite side or edge
of the plate having one projection or lug 10 which extends from the central portion
thereof in the opposite direction to the other three projections or lugs. After the
plate has been thus cut or shaped, it is heated to a suitable temperature, say
about 900 F., and subjected to a suitable pressure between male and female dies
adapted to dish or force inwards or downwards the central portion 1° of the said
plate (Figs. 2 and 3) and likewise to press the central projections or lugs 1b, 1d in
an inward or downward direction so as to bring them parallel to each other or
approximately so (see Fig. 2). the end projections or lugs 1ª, 1° being pressed so
that they extend in the opposite direction to the central projections or lugs, that
is to say outwards or upwards. The plate may be pressed to shape between dies
at one operation of an hydraulic or other suitable press, or the central portion 1°

page_text: with central projections or lugs 1b, 1d may be pressed inwards or downwards at
one operation and the end projections or lugs 1ª, 1° pressed outwards or upwards
by a second operation. After the spring-shoe has left the press, its edges may be
trimmed or set in the usual manner.
The new or improved spring-shoe is fixed in position by riveting (as shown),
or otherwise securing the end or upward projections or lugs 1, 1° to the back or
web 2 of a pressed steel sole-bar of a vehicle underframe or hogie, the flat portions 1'
at each side of the depressed central portion 1° being similarly secured to the lower
flange 2 of the said sole-bar. The central depending projections or lugs 1b, 1d
thus fixed in position are provided with a transverse pin 3 to which one end of a
bearing spring can be readily attached by means of a link as well understood.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1. Constructing a spring shoe made of plate metal and having a depressed
central portion and a pair of parallel side cheeks or lugs depending therefrom_and
adapted to carry a transverse pin, with cheeks or lugs that extend upwardly from
one side of the two end portions of the shoe and are adapted to be secured to the
back or web of a pressed metal sole bar to the bottom flange of which the end
portions of the shoe are to be secured, the arrangement being such as to give
increased rigidity to the shoe and additional strength to the corner or bend of the
sole bar when the shoe is attached thereto, substantially as herein described.
2. The improved spring shoe shown in and described with reference to the
annexed drawing, the said shoe being constructed from a single piece of plate metal
cut and pressed to shape as set forth.
Dated this 12th day of February 1898.
For the Applicants,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.