Improvements in and relating to Power Geared Mincing Machines.
Year: 1899

page_text: Date of Application, 25th Mar., 1899-Accepted, 29th Apr., 1899
COMPLETE SPECIFICATION.
Improvements in and relating to Power Geared Mincing Machines.
I, THOMAS WILLIAMS, the younger, of Bay Tree Cottage, Church End, Finchley,
London, N., 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 :-
The larger sizes of mincing machines or meat cutters require to be driven by
power gearing. The simplest and cheapest method of gearing would be to mount a
spar wheel on the driving shaft of the machine and to drive the same from a
pinion carried by a fly wheel. Since, however, all mincing machines are rotated
in the usual direction from left to right, this arrangement would necessitate
either revolving the fly wheel from right to left, which is naturally inconvenient,
or else the introduction of a third wheel to change the direction of rotation, which
would increase friction and cost.
Hitherto, therefore, power geared mincing machines have either been driven by
bevel or internal tooth gearing, both of which are more costly and set up more
friction than simple spur wheel and pinion gear.
According to my invention I propose to reverse the usual construction and
arrangement of the internal parts of power geared mincing machines so that their
driving shafts will require to be revolved from right to left in lieu of from left to
right as usual, I am thereby enabled to employ the simple spur wheel and pinion
gear first mentioned. My invention also relates to details in the construction and
arrangement of the gearing whereby ease in assembling and disconnecting the various
parts of the machine is effected, the whole of the gearing being removable on
releasing a single locking device, such as a nut or cottar pin.
In order that my invention may be fully understood I will now describe the same
having reference to the annexed sheet of explanatory drawings forming a part of this
Specification, in which :—
Figure 1 is a side elevation and Figure 2 a part sectional plan of a power
geared mincing machine constructed and arranged in accordance with my invention.
Similar letters refer to corresponding parts in both figures.
By way of example I have illustrated a well known type of mincing machine or
meat cutter in which the driving shaft a carries a forcing screw or propeller / whereby
the meat introduced through the hopper c is forced between cutting devices, such as
knives revolving in cutting contact with a ribbed or perforated cutting plate at or
near the delivery end of the casing d, which latter is provided with internal
spiral or longitudinal ribs to prevent the meat from simply revolving with the
forcing screw.
It will be noted that the forcing screw or propeller 6 has a left hand thread in
lieu of a right hand thread as is usual and has therefore to be rotated from right to
left in order to propel the meat up to the cutting devices, which latter, it will be
understood, are also reversed in construction so as to cut up the meat by right to left
rotation. The internal ribs of the casing will also be adapted for the right to left
rotation of the revolving parts.

page_text: Mounted on the end of the driving shaft a is a spur wheel e the teeth of
which are provided with a shroud f at their inner ends. A flat is cut on the
end of the shaft a, and the hoss of the spur wheel e being bored to correspond,
the latter, whilst revolving with the shaft a can readily be withdrawn therefrom.
g is a bracket cast or otherwise provided on the casing a and carrying a short
shaft h on which is mounted the fly wheel i detachably held in position by the
thumb nut k which screws into the end of the shaft h. Z is a pinion provided
or formed on the fly wheel i and meshing with the spur wheel e which by reason
of its shroud is held in place on the shaft a by said piuion. It is obvious that
if desired the outer ends of the teeth of the piniou may be shrouded in lieu
of the inner ends of those of the spur wheel e, with the saine result. By simply
unscrewing the thumb nut k, therefore, the whole of the gear can at once be
removed leaving the machine free to be disinembered for cleaning or other
purposes. A cottar pin or the like may be substituted for the nut k if desired, but I
prefer the latter as being easier to remove.
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 I
claim is :-
1. A mincing machine constructed and arranged so as to operate by rotation
of its driving shaft from right to left and driven by a pinion engaging with a
spur wheel on said driving shaft, both the pinion and spar wheel being readily
detachable from their respective shafts, substantially as described and for the
purpose specified.
2. A mincing machine arranged to operate by right to left rotation of its
driving shaft upon which latter is detachably mounted a spur wheel engaged and
held in place by a pinion provided on the boss of a fly wheel mounted on a shaft
extending from the machine and held thereon by a suitable locking device such
as a nut or cottar pin so that on releasing the said locking device the whole of the
gearing is removeable, substantially as described.
3. A mincing machine constructed and arranged to operate by right to left
rotation and having a bracket g carrying a short shaft on which is mounted
a fly wheel provided with a pinion which engages a spur wheel e detachably
mounted on the driving shaft a, either the spur wheel or the pinion having its teeth
shrouded at one end so that the driven spur wheel is held in place by the driving
pinion which in turn is kept in position by the nut k, whereby on unscrewing the
latter the whole of the driving gear may be removed, substantially as described
and illnetrated
Dated this 25th day of March 1899.
E. P. ALEXANDER & SON,
Chartered Patent Agents,
19, Southampton Buildings, Chancery Lane, London, W.C., Agents.