Improvements in or connected with Driving Chains.
Year: 1899

page_text: Date of Application, 10th June, 1899
Complete Specification Left, 2nd Mar., 1900-4 ccepted, 7th Apr., 1900
PROVISIONAL SPECIFICATION.
Improvements in or connected with Driving Chains.
I, HANS RENOLD, of Green Lane, Manchester, in the County of Lancaster,
Engineer, do hereby declare the nature of this invention to be as follows:-
My said invention relates to pitch driving chains such as are used for the
propulsion of cycles, motor cars and for the transmission of power generally,
and relates particularly to the studs or rivets upon which the blocks or rollers
and links of the chain are mounted.
These studs are formed with a neck, which in some instances has been made
taper, the neck being forced into a hole of the same shape in the link and the
projecting end headed up. To effect this the neck had to be softened which
softening was apt to extend to the body of the hardened studs and thereby
detrimentally affect the same. Further the hardness of the stud was liable
to be injured by the blows of the hammer when rivetting the ends of the studs.
The object of my invention is to improve the method of connecting the rivets
to the links and to dispense with the necessity for making the neck of the
stud softer than the body. In carrying my invention into effect I make the
entire stud of suitably hardened metal and form the ends with a reduced neck
perfectly cylindrical in shape. The ends of the neck are rounded and the neck
is also bored out with a central hole or recess.
The cylindrical neck is forced within a hole in the link which is made of
somewhat softer metal and which hole is very slightly smaller in diameter.
the rounded end of the neck projecting bevond the link.
The rounded end of the neck prevents any burr being formed on the link.
When the link has been thus forced on the neck of the stud it is perfectly
secure. In addition however I force a centre punch or suitable tool within the
central hole formed in the neck and enlarge the hole which causes the rounded
projecting end of the neck of the stud to expand to an infinitesimal degree
which renders the connection absolutely secure.
011
1000
Improvements in or connected with Driving Chains.
I, HANS RENOLD, of Green Lane, Manchester, in the County of Lancaster,
5 Engineer, do hereby declare the nature of this invention and in what manner
[Price SI

page_text: the same is to be performed to be particularly described and ascertained in
and by the following statement:-
My said invention relates to pitch driving chains such as are used for the
propulsion of cycles, motor cars and for the transmission of power generally,
and relates particularly to the studs or rivets upon which the blocks or roller
and links of the chain are mounted.
These studs are formed with a neck, which in some instances has been made
taper, the neck being forced into a hole of the same shape in the link and the
projecting end headed up. To effect this the neck had to be softened which
softening was ant to extend to the body of the hardened studs and thereby
detrimentally affect the same. Further the hardness of the stud was liable
to be injured by the blows of the hammer when rivetting the solid ends of the
studs.
The object of my invention is to improve the method of connecting the rivets
to the links and to dispense with the necessity for making the neck of the
stud softer than the body. The accompanying drawing clearly illustrates my
invention to an enlarged scale.
In carrying my invention into effect I make the entire stud a of suitably
hardened metal and form the ends with a reduced neck 6 perfectly cylindrical
in shape.
The ends of the neck b are rounded at and the neck is also bored with a
central hole or recess c.
The cylindrical neck is forced within a hole
made of somewhat softer metal than the stud.
smaller in diameter than the neck as will be
of the dotted lines at the right of the fig.
When in position the rounded end of the neck
as shown at the left hand of the fig.
in the link which link is
The hole is very slightly
apparent from an inspection
projects beyond the link e
The holes in the link e may, if necessary be smoothly rimered out so as
to present no obstruction to the passage of the neck b through the hole in the
link.
The rounded end of the neck prevents any burr being formed on the link.
When the link has been thus forced on the neck of the stud it is perfectly
secure. In addition however I force a centre punch or suitable tool within
the central hole e formed in the neck
rounded projecting end 1 of the neck
degree which renders the connection
dotted lines to the left of the fig.
and enlarge the hole which causes the
of the stud to expand to an infinitesimal
absolutely secure, as clearly shown in
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:-
In the manufacture of driving chains forming the entire stud upon which
the block, or roller, and links are mounted of hardened metal with a cylindrical
neck provided with a hole or recess, and forcing the neck through a hole of
slightly smaller diameter formed in a link of softer metal the hole in the neck
being then enlarged to expand the neck and render the connection secure sub-
stantially as described and shown.
Dotal this let dar of Vavch 1900