Machines, also Applicable to other Machinery.
Year: 1887

page_text: Date of Application, 3rd May, 1887.
Specification Accepted, 7th June, 1887
Machines, also Applicable to other Machinery. .
We THOMAS TURNER MERCER and THOMAS WOOLFALL both of Cherry Tree Machine
Works, Cherry Tree near Blackburn, Machine Makers, do hereby declare the nature of
our invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention refers to improvements. upon that description of driving motion
which formed the subject of Letters Patent granted to us on the 28th September 1885
and numbered 11512, and has for its object the dispensing with the rectangular frame
for keeping the internal pinion from turning and consists in substituting for such
rectangular frame a number of teeth upon the front of or forming one casting with
the said pinion and which teeth are in constant gear with a corresponding number
and series of internal teeth or circular orifices formed in the outer casing or wheel
guard as hereinafter described and illustrated on the accompanying drawing.
Fig. 1. is a front exterior view of so much of the driving gear of a wringing and
mangling machine as is necessary to explain our improvements which are shown
applied thereto, and Fig. 2. is a sectional plan view of Fig. 1. taken on the
line x-x.
Fig. 3 is a back view of the wheel-guard and Fig. 4 is a back view and Fig. 5. a
plan or edge view of the internal pinion, all shewn separately.
In all the views a. is the driving shaft or spindle say of the wringing and mangling
or other machine required to be driven. b. is the internally toothed spur wheel keyed
thereupon and c. the eccentric projecting upon the fly wheel or driving pulley. All
the foregoing parts are of the usual description and as heretofore employed. d. is
the internal pinion mounted as usual upon the eccentric c. and gearing with the teeth
of the internal spur wheel b. This pinion d. is however (in accordance with the
present improvements) provided in front with a number of additional teeth e. e. e.
which are in constant gear with a corresponding number and series of internal teeth
or circular orifices f. f. f. formed, as illustrated in the outer casing or wheel guard g.
sufficient play being left in the teeth or orifices f. of the casing or wheel guard g. to
Price I

page_text: permit the pinion d. (without turning upon its own axis) to partake of the necessary
reciprocating and oscillating movement in order to revolve the internal spur wheel b.
and this without coming out of gear with the latter.
In this manner we are enabled to revolve the internally toothed spur wheel by
definite gearing and without the employment of any loose parts which have a tendency
to become fractured. We also ensure the pinion being kept in constant gear with
the internal spur wheel without turning upon its own axis as aforesaid.
In some cases we arrange one or more additional teeth or circular orifices in the
casing or wheel guard and thus obtain the advantages of a differential motion.
Instead of teeth and double pinion as aforesaid we also arrange a similar movement
by mounting studs and friction rollers upon the outer face of the internal pinion-
the same taking into holes of larger diameter formed in the wheel casing to permit
the requisite reciprocating and oscillating movement of the pinion.
Having thus particularly described and ascertained the nature of this our said
invention together with the best methods with which we are acquainted for carrying
the same. into practical effect, we wish it to be understood that we make no claim
to the parts of driving gear herein before described as having been employed heretofore,
but what we do claim is :-
1st. The improved combination and arrangement of mechanism constituting a
driving gear for washing, wringing mangling and other machines substantially as
hereinbefore described and illustrated on the accompanying drawing.
2nd. Gearing the internal pinion with teeth or circular orifices formed in the outer
casing, or wheel guard substantially as and for the purposes herein before described and
illustrated on the accompanying drawing.