Improvements in Driving Gear for the Rollers of Wringing and Mangling Machines.
Year: 1891

page_text: Date of Application, 22nd July, 1891
Complete Specification Left, 21st Apr., 1892-Accepted, 18th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Driving Gear for the Rollers of Wringing and
Mangling Machines.
I THOMAS BRADFORD of the Crescent Iron Works Salford in the County
of Lancaster Engineer do hereby declare the nature of this invention to be as
follows:-
This invention relates to the driving gear employed for communicating the
motion of the fly wheel to the lower roller of a wringing or mangling machine,
the object of the invention being to dispense with the use of the two spur wheels
and two pinions usually employed for gaining power between the fly wheel and the
axle of the roller, and to obtain the same effect in a simpler manner without the use
of any revolving external toothed gearing.
For this purpose I cast with, or fix to the boss of the fly wheel or driving pulley
an excentric, carrying a toothed wheel which is mounted loosely thereon so that the
excentric can revolve and carry the wheel round with it but the wheel itself is
prevented from revolving on its own centre by means of a slotted lever or tail piece
cast with or fixed to, one side of the wheel, and having its slot working on a pin or
stud fixed to the framing.
This toothed wheel gears with an internally toothed wheel which is keyed upon
the axis of the roller to be driven, whilst the fly wheel or driving pulley is mounted
loosely upon the same, and the result of this is that on rotary motion being given
to the fly wheel or driving pulley, by hand or power, the excentric carries the
toothed wheel round with it inside the internal wheel, and as the former cannot
revolve upon its own centre, its teeth acting on those of the internal wheel will give
a very slow revolving motion thereto with a corresponding increase of the power,
and as the internal wheel is keyed upon the axle of the lower roller the desired
effect is obtained by two wheels only instead of four as usual.
Another advantage is that as the spur wheel works inside the internal wheel
there are no external teeth to soil or injure the articles being operated upon or
to injure the operator, the external appearance of the gearing being merely that of
a plain cylindrical box.
Dated this 21st day of July 1801
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Driving Gear for the Rollers of Wringing and
Mangling Machines.
I, THOMAS BRADFORD, of Crescent Iron Works, Salford, Lancashire, Engineer,
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 :-
This invention relates to the driving gear employed for communicating the
motion of the hand or actuating fly wheel or pulley to the lower one of the two rollers
of a wringing or mangling machine; the object of the invention being to dispenso
with the two sets of spur wheels and pinions usually employed for communicating
said motion and gaining power in so doing, and to obtain the same result in a
simpler manner avoiding the use of exposed toothed gearing.

page_text: On the accompanying drawings, Fig. 1. represents in front elevation, partly in
section, sufficient of the frame and accessories of a wringing and mangling machine
to enable the arrangement and application of the improved gearing to be fully
understood. The improved gearing is represented in sectional elevation through
the plane indicated by the line a-b. Fig. 2. Fig. 2 represents a sectional elevation
through the plane indicated by the line c-d. Fig. 1. looking in the direction of the
The position of both rollers of the machine is, however, represented in
such fig. in dotted lines.
arrow e.
3, represents the end frames of the machine, which are slotted to receive carrying-
blocks 4, through which the spindles 5, 6, of the lower and upper rollers 7, 8,
respectively pass, the spindle 5, with its roller 7, being that to which the actuating
motion is imparted, and which communicates a like motion to the spindle 6, with its
roller 8, by means of gearing 9, which is protected by a guard 10, bolted to the
adjacent end frame 3, all in a usual manner.
The improved actuating gearing is constructed with a wheel or pulley 11,
(mounted loosely upon the spindle 5, of the roller 7, and secured in position by a
collar 12, and screw-pin 13, or in any other suitable manner) which has cast on or
secured to its boss 14, an excentric 15. On such excentric is loosely mounted 'an
externally toothed wheel 16, which is cast with or secured to a tail-piece 17, formed
with a slot 18, adapted to engage with any convenient fixed part of the machine, such
as a stud 19, bolted to the adjacent end-frame 3. On the spindle 5, there is keyed;
as at 20, an internally toothed wheel 21, (having a greater number of teeth than
that of said wheel 16,) concentric with such spindle, and adapted 'to, engage with
said wheel 16.
It will thus be seen, that the wheel 16, when actuated by the rotation of the
wheel or pulley 11, is prevented from rotating about its axis by the stud 19;
engaging with its slotted tail-piece 17, in consequence of which it is caused, by the
motion it receives from the excentric 15, to traverse around within the wheel-21,
keyed on the spindle 5, and to impart a relatively slow movement thereto and to
said roller 7, with a proportional increase of power.
By such improved arrangement, the four usual exposed wheels and pinions are
dispensed with, and the co-acting gearing is wholly enclosed or boxed in, thereby
preventing liability of injuring the operator or of soiling or injuring the articles
being operated on.
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 1,
claim is :-
In driving gear for the rollers of wringing and mangling machines, the use, in
combination, of an actuating wheel 11, loosely mounted on the shaft to be actuated
and formed or fitted with an excentric boss 15;-an externally toothed wheel 16,
loosely mounted on said boss and adapted with means for preventing said wheel
from rotating around its axis ;-and an internally toothed wheel 21, fast on and
concentric with the shaft to be. actuated and engaging with said excentrically
mounted wheel 16;-when co-acting as herein before set forth.
Dated this 21st day of April 1892.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the. Applicant.