Improvements in and connected with Friction Gears or Couplings.
Year: 1899

page_text: Date of Application, 16th Aug., 1899
Complete Specification Left, 16th May, 1900-Accepted, 16th Aug., 1900
PROVISIONAL SPECIFICATION.
Improvements in and connected with Friction Gears or Couplings.
We, THOMAS HENRY MASSEY, of 8, Warnford Street, Wigan, in the County
of Lancaster, Mechanical Engineer, and LAMBERT ASHWORTH, of 304, Bolton
Road, Radcliffe, in the County of Lancaster, Terra Cotta Manufacturer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to a new form of friction gear or coupling for the
transmission of rotary motion in machinery of all kinds, whereby accidents to
work-people and others and strains and breakages in machinery are obviated.
To this end we fix upon the shaft or axis of the part to be rotated a hollow
disc, upon the boss of which we form or secure a tooth wheel and adjacent to
the latter a loose driving pulley. The arms or disc of the said loose pulley are
formed at diametrically opposite points, at equal distances apart from the centre,
with two or more bosses each adapted to receive a toothed pinion arranged in gear
with the said toothed wheel and longitudinally kept in position by means of
studs passing through the same and the bosses on which they are mounted and
having each a head and nut.
Behind the nuts of the said studs springs are employed or a series of elm or
the like discs may be secured into the said pulley bosses and adapted to receive
between them metal discs secured upon the said bolts, so that when screwing the
said nuts up, the said pinions will be locked to the said pulley and being in gear
with the wheel on the boss of the said hollow disc, turn the latter and when
screwing the said nuts back, allowed to run loose around their axis and thus
uncouple the driving pulley from the said disc and its shaft.
By screwing the said nuts more or less up, the contact between the said pulley
and toothed pinions can be varied at wil! to overcome a certain strain or yield
thereto as may be required in the transmission of various amounts of power.
In lieu of the said nuts, levers may be employed in connection with the said
studs to obtain the desired frictional contact.
T
1
庭
1000
F. BOSSHARDT & Co.,
Agents to Applicants.
COMPLETE SPECIFICATION.
Improvements in and connected with Friction Gears or Couplings.
We, THOMAS HENRY MASSEY, of 8, Warnford Street, Wigan, in the County
of Lancaster, Mechanical Engineer, and LAMBERT ASHWORTH, of 304, Bolton
Road, Radcliffe, in the County of Lancaster, Terra Cotta Manufacturer, do
bereby declare the nature of this invention and in what manner the same is to
[Pri

page_text: be performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to a new form of friction gear or coupling for the
transmission of rotary motion in machinery of all kinds, whereby accidents to
work-people and others and strains and breakages in machinery are obviated.
And in order that our invention may be more fully understood we have caused
to be appended hereunto two sheets of drawings marked with letters of refer-
ence indicating like parts in the various figures.
Figs. 1 & 3 are end views, and Figs. 2 & 4 sectional side views of two different
forms of my improved friction gear or coupling.
In carrying out our invention and referring to the Figs. 1 & 2, we fix upon the
shaft or axis a of the machinery part to be rotated, a hollow disc b upon the
boss c of which we form or secure a tooth wheel and adjacent to the latter a
loose driving pulley e. The arms or disc f of the said loose pulleys are formed at
equal distances apart from the centre and in the present instance at diametrically
opposite points, with a number of bosses g, g, in the present instance two, each
adapted to receive a toothed pinion arranged in gear with the toothed wheel d
and longitudinally kept in position by means of studs & passing through the said
pinions and the bosses of the pulley and having each a head and nut m at
the opposite end.
Behind each nut a washer n is employed and between the same and the boss g
a spring so that when screwing up the said nuts, the said pinions will be
drawn tight against the pulley boss g and thus locked to the said pulley and
being in gear with the wheel on the boss c of the said hollow disc b, turn the
latter and when screwing the said nuts back, allowed to run loose around their
studs and thus uncouple the driving pulley from the said disc and its shaft.
By screwing the said nuts more or less up, the contact between the said pulley
and toothed pinions can be varied at will to overcome a certain strain or yield
thereto as may be required in the transmission of various amounts of power.
Referring to Figs. 3 & 4 we may key or otherwise secure the pinion
the bolt, dispense with or use in addition with the said spring o a series of
elm or the like discs p secured into the pulley bosses, say by projection q, and
adapted to receive between them metal dises r secured upon the said bolts k, so
that when screwing the nut m up, the sides of the pinions & adjacent thereto, the
pulley bosses 7 can be brought more or less in frictional contact with each other
so as to be completely coupled together or yield to a certain strain.
upon
In lieu of the said nuts, levers may be employed in connection with the said
studs to obtain the desired frictional contact as will be readily understood with-
out illustration.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
In a frictional gear or coupling, a spur wheel secured upon a rotary shaft in
combination with a pulley loosely mounted upon the boss of and carrying upon
bolts, a number of pinions in gear with the said spur wheel which pinions by
means of the nuts on the said bolts are capable of being drawn laterally more
or less in frictional contact with the said pulley so as to become wholly or partly
locked thereto, all substantially as set forth.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicants.