Improved Means and Appliances for the Rotation of Gears by Chain Gear Motion.
Year: 1895

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c., Act, 1883), as allowed
by the decision of the Comptroller General of the 5th day of February 1897.
Date of Application, 19th Nov., 1895
Complete Specification Left, 19th Aug., 1896-Accepted, 26th Sept., 1896
PROVISIONAL SPECIFICATION.
Improved Means and Appliances for the Rotation of Gears by Chain
Gear Motion.
1, FRANCIS MIOTTO of No. 4 The Poultry, Nottingham, Hair Dresser and
Perfumer do hereby declare the nature of this invention to be as follows :—
The object of my invention is to increase or decrease the rotation of gears for
bicycles, tricycles and the like, and for other machines; and to render the same
more easy of rotation than heretofore.
For this purpose I form the chain with alternate compound and single links,
joined together by rivets, bolts or other usual means. The compound link is made
about double the width of the single link, and has suitable slots at each end to
receive one end of a single link, which is of ordinary form; the ends of all the links
have a hole formed in them to receive the rivets or bolts for connecting them
together. On each outer side of the compound liuk-and preferably midway
between its ends-J form a stud or projection, fitted preferably with a friction
roller. These driving studs engage with, and fall into suitable recesses formed in
each flange of a double flanged wheel, fixed on the shaft to be driven; and which
is consequently rotated by the aforesaid driving studs and wheel; the main body
of each compound link, and the single links running round the recess in the wheel
between the flanges.
The driving-wheel fixed on the motor shaft, is also formed with double flanges,
having suitable recesses and projections formed in the periphery of each; so that
the main body of the compound link each falls into one of these recesses during the
rotation of the wheel; the projections or teeth on which, press against one end of
each compound link, and so drive the chain with the wheel.
The
In some cases I may reverse the mode of driving; and may use the projections
on the compound links on the driving wheel instead of as described above.
centres of these studs or projections may either be in a line with the centres of the
rivet holes connecting each link together; or they may be out of line with same;
and they may also be disposed at other suitable positions along the side of every
compound link; by which means speed is increased or decreased according to the
relative positions of same, and rotation is rendered easier thereby.
Dated this 18th day of November 1895.
H. WALKER HILL,
2 Church Gate, Nottingham, Agent for the Applicant. 1

page_text: COMPLETE SPECIFICATION (AMENDED).
Improved Means and Appliances for the Rotation of Gears by Chain
Gear Motion.
I, FRANCIS MIOTTO of No. 44 The Poultry, Nottingham, Hair Dresser and
Perfumer, 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 :-
The object of my invention is to increase or decrease the rotation of gears for
bicycles, tricycles and the like, and for other machines; and to render the same
more easy of rotation than heretofore.
For this purpose I form the chain with alternate compound and single links,
joined together by rivets, bolts or other usual means. The compound link is made
about double the width of the single link, and has suitable slots at each end to
receive one end of a single link, which is of or linary form; the ends of all the links
have a bole formed in them to receive the rivets or bolts for connecting them
together. On each outer side of the compound link I form a stud or projection,
fitted preferably with a friction roller. These driving studs engage with, and fall
into suitable recesses formed in each flange of a double flanged wheel, fixed on the
shaft to be driven; and which is consequently rotated by the aforesaid driving studs
and wheel; the main body of each compound link and the single links running
round the recess in the wheel between the flanges.
The driving wheel fixed on the motor shaft is also formed with double flanges,
having suitable recesses and projections formed in the periphery of each; so that
the main body of the compound link each falls into one of these recesses during the
rotation of the wheel; the projections or teeth on which, press against one end of
each compound link, and so drive the chain with the wheel.
The centres of these studs or projections may either be in a line with the centres
of the rivet holes connecting each link together; or they may be out of line with
same; and they may also be disposed at other suitable positions along the side of
every compound link; by which means speed is increased or decreased according
to the relative positions of same, and rotation is rendered easier thereby.
And in order that the said invention may be fully understood, and readily carried
out and into effect, I shall now proceed more particularly to describe the same;
and for that purpose shall refer to the several figures on the annexed sheet of
drawings, wherein the same letters of reference indicate corresponding parts in all
the figures.
Fig. is a side elevation of one form of my improved chain gear and
wheels.
Fig. 2 is a plan of the same.
Fig. 3 is a side elevation of another form or design of my improved chain gear
and wheels.
Fig. 4 is a plan of the same.
In these views-Figs. 1 and 2-A, A are the compound links of the chain,
and B, B are the alternate single links, joined together by the rivets or pins P. P,
which also carry the friction rollers F. F, which turn loosely on the pins and are
held in place by heads on the pins as shown; or by other suitable means.
In some
cases I may have these friction rollers midway or thereabouts between the ends of
the compound links; but the arrangement shown in Figs. 1 and 2 is preferred.
These driving studs or friction rollers fall into suitable recesses R. R formed in
each flange of the driving wheel D-the links A and B running round the recess
in the wheel D between the flanges C. C.

page_text: The driven wheel E is also formed with double flanges C₁ C₁ having
recesses R¹ R', and projections S. S formed in each flange so that the compound
links A. A fit or fall into these recesses R¹ R', and the projections S. S press against
one end of each of the compound links A A, and thus the wheel E is driven by the
chain A. B. on its axle H.
In other cases I may form the chain-as shown in Figs. 3 and 4-with one end A'
fitting in the opposite end B¹ of the adjacent link, the pins P and friction rollers F
being similar to the preceding arrangement; and I may cause the friction
rollers F. F to fall into recesses R2, R2 in the flanges CC of the driven wheel E-
as well as in the driving wheel D.-for the purpose of rotating the wheel E on
its axle H. This arrangement I prefer in inany cases, there being less friction
than in the arrangement shown in Figs. I aud 2.
In other cases I may use any desired combination of one or more of any of the
arrangements herein before described.
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 [
claim is:-
1st. In driving chains and chain wheels for bicycles, tricycles and the like the
combination of the compound and single links A. B with the friction or driving
rollers F and chain wheels D and E having recesses formed in the flanges thereof―
as shown in Figs. 1 and 2-for the purposes mentioned and substantially as
hereinbefore described.
2nd. In driving chains and chain wheels for bicycles, tricycles and the like the
combination of the chain A. B with the friction or driving rollers F and chain
wheels D and E having recesses formed in the flanges thereof-as shown in
Figs. 3 and 4-for the purposes mentioned and substantially as hereinbefore
described.
3rd. In chain gear motion the combination of the friction or driving rollers F
and chain A. B with the chain wheels D and E formed with recesses in the flanges
thereof for the purposes mentioned and as shown in the drawings.
4th. The arrangement and combination of parts hereinbefore described and
shown in the Figures 1 to 4 inclusive berewith for the purposes mentioned and
substantially as herein before described and set forth.
Dated this 18th day of August 1896.
H. WALKER HILL,
2 Church Gate, Nottingham, Agent for the Applicant.