Improvements in Friction Clutches.
Year: 1893

page_text: Date of Application, 19th Sept., 1893-Accepted, 21st Oct., 1893
COMPLETE SPECIFICATION.
Improvements in Friction Clutches.
We, J. BAGSHAW AND SONS, LIMITED, of Victoria Foundry, Batley, in the
County of York, Engineers and Ironfounders, and WALTER BAGSHAW, of Batley
aforesaid, Engineer, do hereby declare the nature of this invention, and in what
manner the same to be performed, to be particularly described and ascertained
in and by the following statement:-
Our invation cousine in
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Fig. 1, is a sme elevation of our improved friction clutch (for acting upon the
inside of the rim of the pulley or wheel).
Fig. 2, is a plan of the lugs C shown in Fig. 1.
Fig. 3, is a side elevation, and Fig. 4 is a sectional plan of the face pieces D
secured to the lugs C, as shown in Fig. 1.
Fig. 5, is an elevation partly in section of our improved friction clutch, for
joining shafting together, and which is also adapted to act upon the inside of the
rim of the wheel or pulley.
Fig. 6, is a side elevation, and Fig. 7 a plan of lever shown in Fig. 5.
Fig. 8, is a side elevation of our improved friction clutch for acting upon the
outside of a boss or rim.
Fig. 9, is a detail view of modification thereof, as hereinafter explained.
Fig. 10, is a detail view of strap and lever as shown in Fig. 8.
Fig. 11, is a sectional elevation of our improved friction clutch for acting upou
the outside of the rim of a wheel or pulley, and
Fig. 12, is a detail view of lever thereof.
Figs. 1, 2, 3 and 4. A is a strap of cast iron or steel, having free ends B with
lugs C, bolted upon which are face pieces D having raised or uneven surfaces.
E is a wedge (centred on the spindle or axis E') adapted to work against the said
face pieces D so as to force them outwards, and so expand the strap and give
the frictional contact when the said wedge E is operated by the lever F to which
it is connected. G is a spiral spring fastened to pins H upon the ends B of the
strap A and is for giving the return movement to the parts when the clutch is
put out of gear. J are tightening devices for keeping the strap concentric.
Figs. 5, 6, and 7.
K is a fast coupling box upon the shaft L, M is a strap
carried by the boss N which is fast upon the shaft O. Upon the said shaft O
is a sliding block P connected to which is an arm R fastened to a lever S which
has raised surfaces adapted to act as shown and described in Figs. 1. 2. 3 and 4
so as to cause the strap M to be put into frictional contact with the rim of the
coupling box K when the sliding block P is moved on the shaft O.
Figs. 8, 9, and 10. T is a strap of metal, preferably iron or steel, hinged at U.
Bolted upon the free ends V of the said strap are face pieces or inclined planes W
adapted to work against corresponding inclined planes or face pieces X carried upon
a fork Y to which is connected at Z the lever for operating it. The backs of the
said face pieces or inclined planes X work against lugs T'. T is a spindle having
a spiral spring T3 thereon for giving the return movement to the parts.
Instead of having the said face pieces or inclined planes as shown in Fig. 8 they
may be notched as shown in Fig. 9.
Figs. 11, and 12. T' is a shaft carrying a pulley T5, T" is a boss which is
secured to strap T' by bolt Ts, T is the face piece, T the lever arrangement
connected to the sliding block T by which the clutch is put in and out of gear.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. A friction clutch having a metal strap with free ends provided with plain or
uneven surfaces, which when acted upon by other plain or uneven surfaces inter-
posed between them, cause the said strap to give the required frictional contact,
and allow the said strap to resume its original position, with or without the agency
of a spring, substantially as shown and described.
2. In a friction clutch, the combination of a strap A, free ends B, lugs C, face
pieces D, inclined plane E, spindle or axis E', lever F, and spring G, operating as
and for the purposes shown and described.
3. In a friction clutch, the combination of a strap T, free ends V, face pieces or
inclined planes W and X, fork Y, lugs T', spindle T2, spring T³, and lever
connected to the fork Y at Z, substantially as and for the purposes shown and
described.
Dated this 13th day of Santanıbar 1902
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent to the Applicants.