provements in the Manufacture of Railway and other Axles.
Year: 1889

page_text: Date of Application, 8th July, 1889
Complete Specification Left. 12th Mar.. 1890-Accepted. 21st June, 1890
PROVISIONAL SPECIFICATION
Improvements in the Manufacture of Railway and other Axles.
I, CHARLES LOCK, of 5, Peckham Terrace, Prestbury Road, Upton Park, in the
county of Essex, Pianoforte maker, do hereby declare the nature of this invention to
be as follows:-
My invention relates to the manufacture of railway and other axles.
The chief object of my said invention is to construct a railway axle in such a
manner that should any flaw exist in the metal, of which the axle is composed, it will
not be able to extend and thus weaken the axle.
In carrying out my invention I take a bar of suitable metal (such as iron or steel)
which forms a core, and around the same I coil a plate of metal of any desired thick-
ness, and preferably in a cold state, the coiling being effected under great pressure
so that the convolutions will lie closely together and to the core. In practice I
find it advantageous to make use of thin plate for coiling around the core, so that in
case a flaw exists it will not extend far through the axle in the direction of its
diameter.
Around the exterior of the coiled plate 1 place a tubular or other casing of any
desirable thickness.
In some cases, instead of coiling a plate around the core I employ a series of
concentric tubes fitting one within the other.
My invention is also applicable to road-locomotive and other axles.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Railway and other Axles.
I, CHARLES LOCK, of 5, Peckham Terrace, Prestbury Road, Upton Park, in the
county of Essex, Pianoforte Maker, 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 the manufacture of railway and other axles or shafts; the
chief object of my said invention being to so construct an axle or shaft that should
any flaw exist in the metal of which it is composed, such flaw will not be able to
extend and thus cause the fracture of such axle or shaft.
My said invention consists essentially in wrapping or coiling around a core a
plate or plates of relatively thin metal, such core and coiled plate or plates being
ultimately enclosed in a suitable outer casing.
To enable my invention to be fully understood I will describe the same with reference
to the accompanying drawing, in which:
--
Figure 1 is a longitudinal section of a portion of an axle or shaft constructed
according to my invention; and
Figure 2 is a transverse section of the same.
Figure 3 shows the method of forming the crank of a crank shaft ; and
Figure 4 is a side view of the said crank.
a is the core of the axle or shaft, which core is a bar of iron, steel or other
suitable metal; and b is the plate coiled around the said core. In practice I find
it advantageous to make use of a thin plate, say one sixteenth of an inch thick for
coiling around the core, so that in case a flaw exists it will not extend far through
the ax'e in the direction of its diameter. I prefer to apply this plate in a cold

page_text: state and under great pressure, so that the convolutions will lie closely together upon
the core.
c is the casing surrounding the said coiled plate. This casing may consist of a metal
tube adapted to fit tightly over the coiled plate, or it may be cast thereon or applied
in any other convenient manner. The casing is advantageously made of such a
thickness that suitable journals can be turned therein.
When my invention is to be applied to a crank-shaft the webs of the crank are
preferably formed substantially in the manner hereinbefore described, that is to say,
by wrapping a plate of considerable length several times around the shaft and the
crank-pin, as shown in figures 3 and 4, in which d indicates the crank shaft, e the
crank-pin, and f,f the webs of the crank. In order to cause the plate of which each
web is composed to firmly grip the crank-shaft and the crank-pin, I advantageously
compress the sides of the said web together in the manner shown most clearly in
figure 3, and hold them in position by means of bolts g, g, by bands encircling the
webs, or by any other desirable means.
Although I prefer to use a continuous piate rolled around the core I may, if desired,
employ a series of concentric tubes fitting one within the other.
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
1. An axle or shaft comprising a central core, a plate of relatively thin metal coiled
around the said core, and an outer casing enclosing the said coiled plate, substantially
as described.
2. The combination with a shaft of the kind hereinbefore described, of a crank
constructed substantially in the manner described with reference to figures 3 and 4 of
the accompanying drawing.
3. The modification of my invention wherein a series of concentric tubes are
employed in lieu of a coiled plate, substantially as set forth.
Dated the 19th day of March 1800
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.