Improvements in Springs, chiefly designed for use in Railway Vehicles.
Year: 1890

page_text: Date of Application, 25th Oct., 1890
Complete Specification Left, 23rd July, 1891-Accepted, 19th Sep*.,
1891
PROVISIONAL SPECIFICATION.
Improvements in Springs, chiefly designed for use in Railway
Vehicles.
I, WILLIAM MARRIOTT, of Melton Constable, in the County of Norfolk, Civil
and Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improved spring chiefly designed for use in railway
vehicles.
The object of my said invention is to improve the construction and efficiency
of springs intended for use in buffers and in the underframes of railway coaches and
the like.
My improved spring according to one form is built up of a series of discs, each
having four, six, eight, or more V-shaped pieces cut out of the rim so as to form
Half the number of fingers or ears
four or more even numbers of fingers or ears.
in each disc taken alternately are bent or cambered in one direction and the
remaining ears are cambered in the other direction, and when the series of discs
are brought together the ears of each disc that are bent in one direction are
arranged to abut against the similar ears of the adjoining disc that are bent in the
opposite direction, so that, the central portions of each pair of discs are separated
by a distance equal to the joint camber of the two sets of adjacent ears, and cannot
approach each other nearer than that distance without bending the said ears.
discs are secured together as follows, that is to say, I form on one of each pair
of fingers that are required to abut together a pair of clips which when the discs
are put together to build up the spring are caused to clip the corresponding finger
of the adjacent disc to prevent separation of the same while however permitting
of a slight sliding movement of one finger relatively to the other.
The
According to a modification of my invention I form each disc with three or any
other convenient number of fingers all cambered in the same direction, and I build
up my spring by threading the dises on a spindle with the camber of adjacent
discs in opposite directions, so that the fingers of each disc excepting the end discs
engage with the fingers of the next disc on one side and the central portion of the
disc with the central portion of the next disc on the other side. These fingers
also are provided with clips to prevent separation while allowing of the sliding
movement.
My improved springs are chiefly adapted for substituting the rubber springs
heretofore used in connection with railway vehicle underframes, but they are also
applicable for buffer-springs and like purposes.
1900
HASELTINE, LAKE & CO.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Springs, chiefly designed for use in Railway
Vehicles.
I, WILLIAM MARRIOTT, of Melton Constable, in the County of Norfolk, Civil
and Mechanical Engineer, 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 :-
My invention relates to springs which are chiefly designed for use in railway
and other buffers, and in the underframes of railway-vehicles.

page_text: ΟΙ
My improved spring comprises discs or plates formed with arms
which are bent or curved alternately in either direction, so that, when the said
dises or plates are placed together side by side, some of the arms of adjacent discs
or plates will touch each other; these contiguous arms are coupled in such a
manner that they can slide freely relatively to each other during compression or
extension of the spring.
In another form or modification of my spring, the arms of each disc are bent
or curved in the same direction the contiguous arms of adjacent discs being coupled
as above mentioned.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a vertical central section showing one form or modification of my
improved spring.
Figure 2 is a plan showing one of the plates or discs hereinafter described.
Figure 3 is a side elevation, and
Figure 4 is a similar view to Figure 2 showing another form or modification
thereof.
Figure 5 is a vertical section showing a further modification.
Like letters indicate corresponding parts throughout the drawing..
A. A are discs or plates having central holes A', and each of which is provided
with six or other even number of arms or extensions A². Half the arms or
extensions in each plate are bent or curved in one direction and the remainder in
the other direction so that when a spring is built up of a series of plates as shown
in Figure 1, the arms or extensions of each plate, that are bent or curved in one
direction abut against the arms or extensions of the adjoining plate that are bent
or curved in the opposite direction. To secure the plates A together and prevent
any rotary movement thereof relatively to each other, I form on one of each of
the adjacent arms or extensions or those that abut together clips B, which when
the plates are put together to build up the spring engage with the other arms or
extensions and prevent separation thereof whilst at the same time admitting of a
slight sliding movement of one arm or extension relatively to the other during
compression or extension of the spring. CC are end or cover plates having
central holes C¹ corresponding to the holes A', and against which the outwardly
bent arms or extensions A2 of the end plates A are adapted to bear. A suitable
rod or bar may be passed through the holes A', C¹.
Figures 3 and 4 show a modification wherein I form each of the discs or plates A
with three or any other convenient number of arms or extensions A³ all bent or
curved in the same direction. In this case in building up the spring I so place
the discs or plates that the arms or extensions A2 of each plate or disc excepting
the end ones engage with the arms or extensions A2 of the next or adjacent plate
or disc on one side, and the central portion of the said plate or disc with the
central portion of the next or adjacent plate or disc on the other side. The arms
or extensions A²' are likewise provided with clips B.
Figure 5 shows a further slight modification wherein I place between each of
the adjacent discs or plates A, a coil or other spring D so as to lessen the drive
or play of the spring. I sometimes employ india-rubber or other elastic washers
or I provide projections or stops upon one or both of the adjacent plates or other
suitable means for the like purpose.
It is obvious that I can employ any other convenient means for connecting
together the adjacent arms or extensions, instead of the herein before mentioned
clips, such as for instance a pin, stud or projection on one arm arranged to work in
a suitable slot provided in the other arm, or the like. I sometimes form the
hereinbefore mentioned spindle square, hexagon, or of other suitable form in
transverse section and provide correspondingly shaped holes in the plates or discs
so as to prevent the latter from rotating thereon.
50
Instead of threading the hereinbefore mentioned plates or discs upon a spindle

page_text: or the like, I sometimes enclose them in a suitable box or casing. In the latter
case the central holes A' may be dispensed with.
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 I
claim is :-
First. A spring comprising two or more discs or plates (with or without central
holes), each of which is provided with an even number of arms or extensions bent
or curved alternately in either direction, and which are arranged side by side and
are connected together by coupling the arms of each disc to the contiguous arms of
the adjacent disc or discs (with or without the springs between the said discs)
substantially as, and for the purposes, above specified.
Second. The modification of my invention wherein my improved spring is built
up of plates having arms or extensions bent or curved in the same direction,
substantially as described with reference to Figures 3 and 4 of the accompanying
drawing.
P T 1
1001
Dated this day of duty
WILLIAM MARRIOTT.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.