Improvements relating to Roller Bearings.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Roller Bearings.
I, EDWARD JONES, of Kynoch Limited, Lion Works, Witton, in the County
of Warwick, Engineer, do hereby declare the nature of this invention to be as
follows:
My invention has for its object the production in a simple and expeditious
manner and at small cost of short tubes especially adapted for use as the rollers
in roller bearings for shafting and for other purposes.
I produce my improved tubular rollers preferably from strips of sheet steel
of a width equal to the required length of the rollers. From such strips I punch
or stamp out blanks having narrowed or pointed forward ends which fit into
correspondingly recessed rear ends when the flat blanks are subsequently bent
into the required tubular form. Although employing various shapes I prefer-
ably adopt such a shape that the forward end of each blank shall be formed by
the portion pierced from the rear end of the preceding blank cut from the strip,
thus avoiding waste of metal.
The flat blanks of metal can be made into the tubular form in various ways
but by preference I employ a tube former consisting of a suitably curved abut-
ment block, which, when the blank is pressed against it with its pointed end
foremost, curls or rolls the metal into a circular form until its ends are bought
adjacent to each other; such ends are then closed by a swaging or rolling opera-
tion and the tubes are finally forced through a die which gives a regular external
surface.
By forming the tubular rollers in the manner described, the longitudinal grain
or fibre of the metal is disposed exactly in the direction of rotation caused by
contact of the rollers with the journal supported by the bearing in which they are
employed, and is thus better adapted to resist wear than by any other disposition.
The formation of the rollers from sheet metal also permits them to yield without
fracture under any uneven or undue stress to which they may be individually
subjected through irregularities in the journal, and by such yielding to distribute
the pressure over the other rollers of the bearing.
Dated His 19th May
UL
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester,
Agents for Applicant.
Improvements relating to Roller Bearings.
I, EDWARD JONES, of Kynoch Limited, Lion Works, Witton, in the County
Warwick, Engineer, do hereby declare the nature of this invention and in
CD 077

page_text: what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
My invention has for its object the production in a simple and expeditious
manner and at small cost of short tubes especially adapted for use as the rollers
in roller bearings for shafting and for other purposes.
In the accompanying sheet of. explanatory drawings to be hereinafter
referred to.
Figure 1 is a plan of the strip from which the flat roller blanks are formed.
Figures 2 and 3 are plans representing two forms of blanks, and Figures 4
and 5 are the respective plans of the said blanks made into rollers. Figure 6
is an end view of the rollers.
Figures 7 and 8 are plans representing two other forms of blanks, and
and 10 are the respective plans of the said blanks made into rollers.
is an end view of the rollers.
Figures 9
Figure 11
I produce my improved tubular rollers preferably from rolled strips of mild
steel of a width equal to the required length of the rollers. From such strips I
punch or stamp out blanks having narrowed or pointed forward ends which fit
into correspondingly recessed rear ends when the flat blanks are subsequently
bent into the required tubular form. Although I make the blanks of varying
shapes, in every case the forward end of each blank is formed by the portion
pierced from the rear end of the next blank to be cut from the strip, and thus
waste of metal is avoided.
The-meeting or abutting edges of the tube formed from each blank extend
in a spiral line completely around the tube.
Figure 1 is a plan of a mild steel strip having the grain or fibre, formed by
rolling, running in a longitudinal direction between the ends a and b. The
dotted lines indicate the manner in which the strip is stamped into blanks one
of which is shown separately at Figure 2. Such blanks are made into the tubular
form illustrated at Figures 4 and 6 in various ways, but by preference I employ
a tube former consisting of a suitably curved abutment block, which, when the
blank is pressed against it with its pointed end foremost, curls or rolls the metal
into a circular form until the ends are brought adjacent to each other along
spiral or curved lines as indicated at Figure 4; such ends are then closed
together either by a swaging or rolling operation, and the tubes are finally forced
through a die to give them a smooth and regular external surface.
Instead of punching or stamping out blanks such as illustrated at Figure 2,
I sometimes, by the employment of suitably formed tools, punch or stamp from
the strip as shown at Figure 1, blanks of shapes such as shown at Figures 3, 7,
and S, which I subsequently bend into the tubular form as with the blanks
hereinbefore referred to and as illustrated, at Figure 2.
By forming the tubular rollers in the manner described the longitudinal grain
or fibre of the metal is disposed exactly in the direction of rotation of the rollers
caused by their contact with the journal supported by the bearing in which they
are employed, and such a disposition I find much better adapted to resist wear
than any other. The formation of the rollers from mild steel blanks and with
interlocking or engaging ends, as described and illustrated, also permits them
to yield slightly under any uneven or undue stress to which they may be
individually subjected through irregularities in the journal, and by such yielding
to avoid damaging the surface of the shaft or journal and the body of the bearing,
and to effect the uniform distribution of the pressure over the whole of the rollers
contained in the bearing.
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
1. The manufacture of rollers for roller bearings from blanks cut from mild

page_text: steel strips, the opposite end of the said blanks being caused to interlock or
engage with each other when the metal is bent into a tubular form, substantially
as described and as illustrated.
2. In the manufacture of rollers for roller bearings from mild steel blanks,
the cutting of the said blanks from a strip of metal of a width equal to the
required length of the rollers and in such a manner that the forward end of each
blank shall be formed by the portion pierced from the rear end of the next blank
to be cut from the strip, substantially as described and as illustrated.
3. Rollers for roller bearings formed from mild steel blanks and having the
longitudinal grain or fibre disposed in the direction of rotation of the rollers
caused by their contact with the journal supported by the bearing in which they
are employed, substantially as described and as illustrated.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester,
Agents for the Applicant.