Improvements in Wheel Cutting Machinery.
Year: 1896

page_text: Date of Application, 9th July, 1896
Complete Specification Left, 9th Apr., 1897-Accepted, 9th July, 1897
Improvements in Wheel Cutting Machinery.
We JOHN WILLIE KNIGHT and GEORGE HENRY WILLSON both of Raglan Street
Iron Works, Halifax, in the County of York, Machine Maker, do hereby declare
the nature of this Invention, to be as follows:-
The object of our invention is to so operate the circular cutter, that it traverses
backwards and forwards automatically with a quicker return than forward
movement, also to revolve the dividing wheel automatically the required part of a
revolution at every double stroke of the cutter.
For operating the circular cutter we employ a shaft upon which the cutter is
mounted, the said shaft being carried in a slide upon a frame; for operating the
shaft is a pinion wheel and worm, the worm gearing with a wheel upon a second
shaft, this wheel also gears with a similar wheel upon a third shaft, the wheel upon
the second shaft slides upon it and drives it, parallel to which is the third shaft upon
which is a screw, the nut of which is within the wheel of the third shaft.
At the end of the second shaft is a bush upon which is a wheel gearing with a like
wheel (having a smaller number of teeth) on the third or screw shaft; the screw
shaft has a conical bush bearing, with internal key arranged so that in revolving
one way the shaft is made fast, and when revolving in an opposite direction it is
loose.
There is a clutch upon the aforesaid bush, also a second clutch upon the second
shaft which are alternately in gear and out with each other, the bush being moveable
upon its shaft by an arm, adjustable bolt and tappet rod on which are two tappets
or stops, the rod being connected to a pivotted lever connected to tappet levers, the
adjustable bolt is attached to the slide. When the clutches are in contact the slide
moves towards them until it comes in contact with the adjustable stop upon the
tappet rod, and the adjustable bolt in contact with arm which causes the clutches to
disengage when the action of the slide is reversed, and continues until the other
side of the slide comes in contact with the stop at the other end of the rod, which
it moves and puts the clutches in gear again reversing the action of the slide.
For revolving automatically the dividing wheel before named, we employ a stud
upon which is a change wheel gearing with which by means of other change wheels
is a worm driving the dividing wheel, the stud is so geared to the dividing wheel
that one revolution of the stud revolves the dividing wheel the exact part of the
revolution required.
On the stud is a disc on the side of which is a cam and stud, this cam stud comes
in contact with two pivotted tappet levers for the purpose of allowing the stud to
make but one revolution, which takes place at the backward stroke of the slide.
When the tappet rod is moved towards the cutter wheel the lower ends of one of
the levers moves outwards allowing the stud and disc to revolve, during which
revolution the cam comes in contact with the other lever pushing it into such a
position that the stud upon the disc comes in contact with the second tappet lever
and stops it; when the cutter slide ends its forward stroke it comes again in contact.

page_text: with the tappet rod and causes the first and second levers to move towards their
former positions.
The worm or change wheels operating the central stud are operated by spring
rod and friction cone upon the worm or other shaft.
Dated this Eighth day of July 1896.
JOHN E. WALSH,
Crossley Street, Halifax, Patent Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Wheel Cutting Machinery.
We, JOHN WILLIE KNIGHT and GEORGE HENRY WILLSON, both of Raglan Street
Iron Works, Halifax, in the County of York, Machine Makers, 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 object of our invention is to so operate the circular cntter, that it traverses
backwards and forwards automatically with a quicker return than forward
movement, also to revolve the dividing wheel automatically the required part of a
revolution at every double stroke of the cutter.
DESCRIPTION OF. DRAWINGS.
Fig. 1, is a sectional end elevation of our improved wheel cutting machinery.
Fig. 2, is a side elevation of Fig. 1.
Fig. 8, is a plan of Fig. 1.
Fig. 4, is a view of mechanism for operating or regulating the dividing
mechanism.
Fig. 5, is a front view of Fig. 4.
For operating the circular cutter A we employ a vertical shaft B upon which the
cutter is mounted, the said shaft being carried in journals C upon a slide C₁, mounted
upon a suitable frame C2. For operating the shaft B is a worm B1 gearing with a
pinion wheel D upon a horizontal shaft E, this wheel also gears with a similar
wheel D1 upon a second horizontal shaft F, the wheel upon the horizontal shaft E by
means of sliding key and keyway El slides upon it and drives the wheel Di upon
the second horizontal shaft F, this horizontal shaft F is parallel to the horizontal
shaft E and has a screw formed upon it, the nut F1 of which is within or forms part
of the boss of the wheel DI of the said shaft.
At one end of the shaft E is a bush G upon which is a wheel H gearing with a
like wheel H1 having a smaller number of teeth on the screw shaft, the screw shaft
has a conical bush bearing J at its opposite end with internal key J1, arranged so
that in revolving one way, that is for cutting, the shaft is made fast, and when
revolving in an opposite direction it is loose to allow of a quick return of the slide.
There is a clutch K upon the bush G upon the aforesaid shaft E also a second
clutch L upon the shaft which alternately engage or disengage with each other at
each reverse movement of the slide, the bush being moveable upon its shaft E, by an
arm Li, adjustable bolt or stud L2 and tappet rod M on which are two tappets or
stops M1, M2, the rod M being connected to a pivotted lever N, connected by
connecting rod and lever O to tappet levers N1, N2, the adjustable bolt L2 is
operated upon by a projection or bracket L³ attached to the slide.
When the clutches K and L are in contact, the slide C1 moves towards them until
it comes in contact with the adjustable stop M1 upon the tappet rod M, and the
adjustable bolt in contact with arm or projection L³, which causes the clutches to
disengage when the action of the slide is reversed, and continues until the other

page_text: side of the slide comes in contact with the stop M2 at the other end of the rod M,
which it moves, and puts the clutches into gear, again reversing the movement of
the slide.
We mount the dividing wheel P, upon a suitable carriage P1, upon one end of the
shaft P2, on which is fixed the wheel to be cut, the dividing wheel P gears with a
worm R upon a horizontal shaft R', placed upon one side of the bed or frame, this
horizontal shaft R' is driven by spring friction pulley R, operating a worm R³,
carried upon stud S mounted in a bracket S', bolted to the bed of the machine, this
worm R³ gears with a worm wheel S upon the horizontal shaft R', at one end of
this shaft is a change wheel T, having the number of teeth required to be cut in the
wheel upon the dividing wheel shaft P2, this change wheel gears by means of other
change wheels T, T, with a gear wheel U upon a second horizontal shaft U1, at the
other side of the machine frame, upon this shaft U1 is a disc U2, having a stud V¹,
upon the side of which is a cam V; the disc U is so geared to the dividing wheel,
that one revolution of the disc revolves the dividing wheel P the exact part of the
revolution required.
When the rod or lever O is moved in direction of arrow, the lower end of lever N2
moves clear of stud V1, allowing the disc U2 to make one revolution, during this
revolution the cam V comes in contact with lever N¹ (which is held in position by
friction only), pushing it from its first position to the position vacated by lever N,
consequently on the completion of one revolution of the stud or shaft U1, the
stud V comes into contact with lever N1, and motion ceases. When however the
slide carrying the cutter arrives at the end of its forward stroke, it again comes in
contact with the tappet rod M, which moves rod or lever O in the opposite direction,
so causing the lever N2 to move towards its initial position, such lever N2 at the
same time pushing the lever N1 to its initial position, by contact with projection N³
on the said lever N1 so completing the cycle.
The worm and change wheels operating the central stud or shaft, carrying the
cutter are operated preferably by rope X and pulleys Y, or in any other suitable
manner.
The Handle X' upon the screwed shaft X2, is for setting the carriage (carrying
the dividing wheel P and wheel requiring to be cut) up to the cutter, the handle Yi
upon the shaft U1 is for operating the machine by hand.
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 :-
1. In wheel cutting machinery, mounting the cutter A upon a slide C1 to which
is given a backward and forward motion by means of worm B1 gear wheels D and D¹
upon the shafts B, E, and F, nut F1, bearing J, key J1, tappet rod M, with
stops M', M², clutches K, and L, stud L', projection L³ operating automatically and
in combination with the dividing mechanism in the manner and for the purposes
substantially as shown and described.
2. In wheel cutting machinery, automatically operating the dividing wheel P from
the cutter slide by means of lever N attached to tappet rod M, levers O tappet
levers N', N2 disc U2, cam V, stud V1, gear wheels T, T1, T2, and U, shaft R',
worm R, operating in combination with the cutter mechanism, in the manner and
for the purposes substantially as shown and described.
3. The general arrangement of apparatus for cutting or forming the teeth in
wheels, substantially as shown and described.
11005
JOHN E. WALSH,
Crossley Street, Halifax, Agent.