Improvements in Couplings for Transmitting Motion in Spring Mounted Traction Engines or in other cases where Relative Movement of the Driven and Driving Parts is to be allowed for.
Year: 1898

page_text: Date of Application, 7th Dec., 1898-Accepted, 7th Jan., 1899
COMPLETE SPECIFICATION.
Improvements in Couplings for Transmitting Motion in Spring
Mounted Traction Engines or in other cases where Relative
Movement of the Driven and Driving Parts is to be allowed for.
I, JAMES MARSHALL, of Britannia Ironworks, Gainsborough, in the County of
Lincoln, 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 has for its object to provide simple and compact means for coupling
driven and driving parts in cases where relative movement between them has to be
allowed for. My invention is specially applicable as a coupling between the engine-
driven spur pinion and the second motion shaft in traction engines mounted upon
springs, and I will describe, with reference to the accompanying drawings, my
invention as so applied from which also its other applications will be readily
understood.
Figure 1 is a side elevation, and Figure 2 a vertical section (on the line 1-2
Figure 1) of the engine driven spur wheel (A) and the pinion (B) on the second
motion shaft. Figure 3 shews one half of the floating, or intermediate, ring (C).
Figure 4 is a section on the line 3, 4, Figure 1, and Figure 5 is a section on the
line 5-6, Figure 1. Figures 6 to 10 shew in views corresponding to those of
Figures 1 to 5 a modification as hereinafter described. The corresponding parts
are marked with the same letters of reference in all the figures.
The floating or intermediate, ring, C, is so formed as to presenti recesses
alternately on each side, and in, or about, the same plane, each for the reception
of one of the links D, one end of each of which is connected to the ring C, alternately
at opposite sides thereof, and in the said recesses; those connected at the one side
of the said ring being connected, by their other ends, to the wheel A, and those
connected at the other side of the said ring being connected, by their other ends,
to lugs b, on the pinion B. The connection of the links D is effected so that the
requisite movement of the said links can take place. It is shewn in Figures 1 to 5
as being effected by forming the said links with circular bosses d² one at each end
and on sides opposite to each other, the said bosses & fitting into corresponding
recesses ca² and be formed in the plate C, wheel A, and pinion B, as shewn, so
that the said bosses can turn in the said recesses.
In Figures 6 to 10 I have shewn in views corresponding to Figures 1 to 5
another way of connecting the links D. It is effected in this case by means of
pins f rivetted in the wheel A, pinion B, and ring C, the projecting parts of the
said pins receiving the eyes in the ends of the links so that they can turn on the
said pins.
Owing to the way in which the floating, or intermediate, ring C is formed the
pinion B can be brought very close to the wheel A.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
A coupling for spring mounted traction engines, or for other purposes, where
relative movement of the driving and driven parts has to be provided for, the
said coupling consisting of a floating, or intermediate, ring, formed as described, to
accommodate links connected thereto in the recesses alternately on opposite sides,
and to the driving and driven parts; substantially as herein before described and
illustrated in the accompanying drawings.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.