Improvements in Machinery for Finishing or Machining [Pulleys and Fly-wheels and for other like purposes.
Year: 1898

page_text: Date of Application, 17th Sept., 1898
Complete Specification Left, 31st May, 1899-Accepted, 16th Sept., 1899
Improvements in Machinery for Finishing or Machining [Pulleys and
Fly-wheels and for other like purposes.
We, TANGYES MACHINE TOOL COMPANY LIMITED, of Oxford Works, Soho, in
the County of Stafford, Tool Manufacturers, and WILLIAM HENRY BAILEY, of
"Mayflower," Edgbaston Road, Smethwick, in the County of Stafford, Mechanical
Engineer, do hereby declare the nature of this invention to be as follows:-
-
The said invention consists of the improvements hereinafter described in or
additions to machinery for finishing or machining the peripheries of pulleys and
fly-wheels and for other like purposes described, represented and claimed in the
Complete Specification of Letters Patent No. 21,278 of 1895, the said improve-
ments or additions having for their object to permit the boring, facing and turn-
ing of the bosses of the pulleys and fly-wheels to be effected simultaneously with
the finishing or machining of the peripheries or faces of the pulleys and fly-wheels
and also to permit of the milling of the key-ways of the said pulleys and fly-
wheels while in the machine.
We will describe the said invention in connection with the finishing of a fly-
wheel.
At one end of the bed or base of the face milling machine described and repre-
sented in the specification of the patent herein before referred to, we arrange a.
vertical pillar or standard carrying at its top a radial swinging arm the said arm
being pivoted to one side of the standard so as to be capable of swinging clear of
or from over the bed of the machine in order to facilitate the placing of the fly-
wheel in position and its removal from the machine. In the end of the radial
swinging arm the vertical spindle of the boring tool works. The top of the
standard and the underside of the radial swinging arm are provided with facings
which when the radial arm is swung into its operating position or position for
work ensure the axis of the spindle of the boring tool falling in line or coinciding
accurately with the axis of the boring bar or tool thereby obviating after adjust-
ment of the said boring spindle. The radial arm when swung into position for
work is locked by a bolt or bolts or other equivalent fastening. The boring bar
or tool is arranged in a self-centering guide bracket and occupies a constant
position. Rotary motion is communicated to the boring spindle by belt and other
gearing or by equivalent driving mechanism. The boring spindle is made to
travel in a vertical line by mechanism differing in no essential respect from that
employed in effecting a similar motion in the operating spindle of an ordinary
boring machine. The arm for effecting the facing and turning of the boss of
the fly wheel is bolted to the boring bar so as to operate either on the upper or
underside of the said boss.
The borings or scrap metal produced by the working of the machine falls
through a hole in the table or bed of the machine on to the floor or base plate
of the same from which the scrap metal is removed from time to time through an
opening provided for that purpose.
In order to effect the milling of the key-way or key-ways of the fly-wheel,

page_text: whether parallel or taper, we secure to the boring spindle sleeve a hollow bar
carrying a train of toothed pinions the lowest pinion having on the ends of its
spindle the small milling tools for effecting the operation referred to. The rotary
motion of the first pinion of the train is obtained through bevil gearing. The
hollow bar herein before referred to is arranged to swivel in any direction by a
ball joint which passes through either parallel or taper bushes fixed in the boss
of the fly-wheel to give any desired taper.
The said invention consists further in the addition to the said machinery of
a tool of special curve, being the same radius as the tools in the face cutter block,
for the purpose of removing the lines made by the said cutter block on the
periphery of the fly-wheel. The tool is so arranged upon a compound slide that
it can be moved to either side of the centre of the wheel or up and down
the face of the wheel. The tool may also be tilted independently of or together
with the compound slide which is made to swivel upon its base. The object of
this tilting and swivelling movement is to adapt the tool to any desired radius
or camber of wheel periphery. As an alternative method we fix a tool on the
compound slide rest the said tool having a radius the same as the camber on the
periphery of the fly wheel. With this tool we scrape the surface of the wheel
smooth.
The application of the said invention to the finishing, that is simultaneously
finishing or machining the faces and boring, facing and turning the bosses of
pulleys and the like differs in no essential respect from its application to the
finishing of a fly-wheel as hereinbefore described.
Dated this vantaanth of Canta 1000
Improvements in Machinery for Finishing or Machining Pulleys and
Fly-wheels and for other like purposes.
66
We, TANGYES MACHINE TOOL COMPANY LIMITED, of Oxford Works, Soho, in
the County of Stafford, Tool Manufacturers, and WILLIAM HENRY BAILEY, of
Mayflower," Edgbaston Road, Smethwick, in the County of Stafford, Mechanical
Engineer, do hereby declare the nature of the said invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement:-
The said invention consists of the improvements hereinafter described in or
additions to machinery for finishing or machining the peripheries of pulleys and
fly-wheels and for other like purposes described, represented and claimed in the
Complete Specification of Letters Patent No. 21278 of 1895, the said improve-
ments or additions having for their principal object to permit the boring, facing and
turning of the bosses of the pulleys and fly-wheels to be effected simultaneously with
the finishing or machining of the peripheries or faces of the pulleys and fly-wheels,
and also to permit of the milling of the key-ways of the said pulleys and fly-
wheels while in the machine.
We will describe the said invention in connection with the finishing of a fly-
wheel.
At one end of the bed or base of the face milling machine described and repre-
sented in the specification of the patent hereinbefore referred to, we arrange a
vertical pillar or standard carrying at its top a radial swinging arm, the said arm
being pivotted to one side of the standard so as to be capable of swinging clear of

page_text: or from over the bed of the machine in order to facilitate the placing of the fly-
wheel in position and its removal from the machine. In the end of the radial
swinging arm the vertical spindle of the boring tool works. The top of the
standard and the underside of the radial swinging arm are provided with facings
which when the radial arm is swung into its operating position or position for
work ensure the axis of the spindle of the boring tool falling in line or coinciding
accurately with the axis of the boring bar or tool thereby obviating after adjust-
ment of the said boring spindle. The radial arm when swung into position for
work is locked by a bolt or bolts or other equivalent fastening. The boring bar
or tool is arranged in a self-centering guide bracket and occupies a constant
position. Rotary motion is communicated to the boring spindle by belt and other
gearing or by equivalent driving mechanism. The boring spindle is made to
travel in a vertical line by mechanism differing in no essential respect from that
employed in effecting a similar motion in the operating spindle of an ordinary
boring machine. The arm for effecting the facing and turning of the boss of
the fly wheel is bolted to the boring bar so as to operate either on the upper or
underside of the said boss.
The borings or scrap metal produced by the working of the machine falls
through a hole in the table or bed of the machine on to the floor or base plate
of the same from which the scrap metal is removed from time to time through an
opening provided for that purpose.
In order to effect the milling of the key-way or key-ways of the fly-wheel,
whether parallel or taper, we secure to the boring spindle sleeve, a hollow bar
carrying a train of toothed pinions the lowest pinion having on the ends of its
spindle the small milling tools for effecting the operation referred to.
The rotary
motion of the first pinion of the train is obtained through bevil gearing. The
hollow bar herein before referred to is arranged to swivel in any direction by a
ball or other joint which passes through either parallel or taper bushes fixed in
the boss of the fly-wheel to give any desired taper.
The said invention consists further in the addition to the said machinery of
a curved tool of a radius equal to the radius of the tools in the cutter block
for the purpose of removing the lines made by the said cutter block on the
periphery of the fly-wheel. The tool is so arranged upon a compound slide that
it can be moved to either side of the centre of the wheel or up and down
the face of the wheel. The tool may also be tilted independently of or together
with the compound slide which is made to swivel upon its base. The object of
this tilting and swivelling movement is to adapt the tool to any desired radius
or camber of wheel periphery. As an alternative method we fix a tool on the
compound slide rest the said tool having a radius the same as the camber on the
periphery of the fly wheel. With this tool we scrape the surface of the wheel
smooth.
Figure 1 of the accompanying drawings represents in front elevation machinery
for finishing and machining fly wheels containing the improvements constituting
the present invention; Figure 2 is a plan of a portion of the same.
Figures 3 to 13 both inclusive represent modified constructions or arrangements
of the said machinery hereinafter described.
The same letters of reference indicate the same parts in the several figures of
the drawings.
We will first describe the arrangement Figures 1 and 2:
A is the periphery or face milling machine described, represented and claimed
in the Complete Specification of the patent herein before referred to and B is the
vertical pillar or standard at the opposite end of the bed of the machine carrying
the radial swinging arm 6 pivotted at 61 to the side of the standard B. When
the radial swinging arm 6 is in the position for work, that is, the position repre-
sented in Figures 1 and 2 the axis of the boring tool spindle or tool holder a, is
coincident or in line with that of the fly wheel f to be operated upon the accurate
position of the said boring tool holder being determined by facings c, c on the

page_text: bolt
d
standard B and on the opposed or abutting face of the arm b. The
radial swinging arm b is locked in this, the working position, by
a screw bolt d pivotted to the pillar B at e the said
passing through a slot in the side of the arm when turned into its locking
position or when turned in the direction of the arrow in Figure 2 for unlocking
the said arm. When the arm b is unlocked it may be turned at right angles to
the position represented in Figure 2 so as to be clear of the fly wheel and permit
of the removal of the latter and of its replacement by another fly wheel to be
finished.
The top of the standard B is provided with a belt pulley be for gearing with the
belt pulley a of the boring mechanism which boring mechanism differs in no
essential respect from that of an ordinary boring machine.
The boring tool is of the kind commonly employed and is fixed in the end of the
boring spindle or tool holder a in the ordinary way.
As the axis on which the radial arm b swings is not coincident with that of
the pulley the belt or band (not shown) must be thrown off the pulleys a², b²
on the turning of the swinging arm 6 into its out of action position.
To render unnecessary the detaching of the driving belt referred to, we prefer
to construct the vertical pillar or standard B and swinging arm as shown in
the machine represented in front elevation (the swinging arm b being in its non-
acting position) in Figure 3.
Figure 4 represents the same machine partly in front elevation and partly in
vertical section with the arm 6 in its acting position.
Figure 5 is a horizontal section of the standard B and swinging arm b taken
on the line, a Figure 4, and Figure 6 represents a portion of Figure 4 drawn to
a larger scale.
Figure 7 represents in front elevation the machine Figures 3 and 4 fitted with
a tool for milling or machining the key ways of the bosses of fly wheels and
Figures 8 and 9 are views at right angles to each other of a portion of Figure 7
drawn to a larger scale.
From an examination of Figures 4, 5 and 7 it will be seen that portions of the
vertical pillar or standard B are cylindrical and that the radial arm b is made to
fit the cylindrical portions of the said pillar so as to be capable of swivelling
directly thereon, the arm b being fixed or locked in its acting position by cottered
pins (see Figure 7) taking into side lugs g, g on the bearing part of the radial
arm and coincident lugs 9, 9 on the vertical pillar or upright B (see Figures 3
and 7).
The method of driving the band or belt pulley 62 at the head of the vertical
pillar or standard B will be readily understood by an examination of Figure 4.
In order to effect the facing and turning of the boss of the fly wheel the boring
tool is removed and replaced by the upper and lower cutter blocks marked
respectively h, n, in Figure 4, the lower cutter block n being fitted loosely to an
extension of the boring spindle k. The sleeve ha of the upper cutter block h,
which effects the facing of one side of the boss of the fly wheel and also the turn-
ing of the periphery of one end of the said boss where the latter operation is
thought necessary, is keyed or fixed by keys i, i to the boring axis or spindle k the
cutter of the said block being advanced across the end of the boss by star wheel
feed mechanism of the kind commonly employed for like purposes. The upper
cutter block is raised and lowered for effecting the turning of the periphery of
that end of the boss presented to it, by the hand wheel the rotation of which
wheel causes the screwed sleeve 2 to advance out of or into the internally screwed
bush m of the tool holder.
The machinery or facing of the other end or side of the boss of the fly wheel f
is effected by a lower cutter block n of the same construction as that of the upper
cutter block h, the said lower cutter block being geared to the extension of the
boring spindle k by a clutch p which is keyed or fixed to the extension of the
spindle k.
The sleeve n² of the lower cutter block n fits the extension ² of

page_text: the boring spindle loosely, the rotation of the lower cutter block n being effected
when required by the raising of the clutch pin the manner hereinafter described.
To the lower end of the extension of the boring spindle k is keyed a sleeve
or clutch the upper end of which has projections or clutch teeth capable of
engaging with corresponding clutch teeth on the lower end of the sleeve 2 of the
lower cutter block n so that when the lower or rotating clutch p is engaged with
the sleeve n of the lower cutter block n, the said cutter block partakes of the
rotary motion of the axis or spindle but on the disengagement of the clutch P the
lower cutter block n comes to rest. In Figure 6 the clutch is shown in its
engaged position and in Figure 4 in its disengaged position.
The clutch described is raised for driving and raising the lower cutter
block n by the turning in one direction of a hand wheel q on the axis of which
is a worm gearing with a worm wheel the other end of the spindle of which
carries a pinions (see Figure 6) gearing with a rack son an outer case t in
which the sleeve 2 of the lower cutter block and also the clutch fit and
rotate. The reverse rotation of the hand wheel 9 effects the lowering of the
cutter block n and subsequently the disengagement of the parts of the clutch p.
The lines produced on the periphery or face of the fly wheel by the milling
cutters of the machine A are removed by a tool or scraper u shown separately
in Figure 12 and in a side elevation of the machinery in Figure 10 and in a
plan of a portion of the latter in Figure 11, the said tool or scraper being
carried by a compound slide, the vertical slide of which is capable also
of a turning or rotary motion on the horizontal slide 2 (see the plan Figure 11).
After angular adjustment of the vertical slide it is fixed by screw nuts v, vl, v².
The scraper has a radius equal to the radius of the milling tools in the cutter
block of the machine A. By providing a scraper or tool u of the kind described
capable both of vertical and angular adjustment any camber or curvature on
the periphery of the fly wheel may be accommodated by the said tool.
Although we prefer to employ a scraper having the curvature and capable of the
adjustments described we wish it to be understood that a scraper made for the par-
ticular camber or curvature of periphery of the fly wheel under operation may be
employed in which case the arrangement for permitting of angular adjustment of
the scraper is rendered unnecessary.
The opposite sides or edges of the periphery of the fly wheel are machined by
milling tools or cutters of the kind marked w, w in Figure 1, the said cutters
being mounted on the shaft which is driven by spur gearing operating the
wheel w. The lines produced by the milling tools or cutters are removed by the
subsequent action of the horizontal scrapers y, y shown in Figure 10 which hori-
zontal scrapers are substituted for the milling tools or cutters w, w.
Where the fly wheel is to be used with a driving band or belt the scraping of
the periphery of the fly wheel may be dispensed with, the lines produced on the
periphery of the fly wheel by the milling tools being left and thereby increasing
the bite of the band or belt on the fly wheel.
We wish it to be understood that in order to admit of several operations pro-
ceeding simultaneously or nearly simultaneously we prefer to arrange the part of
the machine represented in Figures 3 and 4 and the part of the machine in
Figure 10 at right angles to one another; the parts of the machine represented
in Figure 10 which should be seen in Figures 3 and 4 are omitted for the sake
of simplicity only.
When by the slow rotation of the table z carrying the fly wheel the portion of
the periphery first operated on by the milling cutters of the machine A has turned
through a quarter of a rotation that part of the machine represented at the left
hand end of Figure 10 is advanced to its work the work of milling and scraping
subsequently taking place simultaneously.
After the machining and scraping operations of the periphery and boss of the
fly wheel or simultaneously with these operations, the machining followed by the
scraping of the edges of the fly wheel are effected.

page_text: When it is desired to mill or machine the key way of the boss of the fly wheel f,
the extension of the boring spindle is removed and the upper cutter block h
is also removed from the boring spindle k, and mechanism of the kind represen-
ted in Figures 7, 8 and 9 is applied to the machine. The said mechanism con-
sists of a hollow bar 1 connected to a stem or shank 2 by links 3, 3. The said
stem or shank 2 takes in the hollow end of the boring spindle k. The hollow
bar 1 carries a train of pinions 4, 4, 4 driven by the bevil pinions 5,5 the axis
of the lowermost pinion 4 carrying a milling cutter or tool 6.
When the key way is to be plain, that is, parallel to the axis of the hole in the
boss of the fly wheel, we fit a slotted bush in the hole in the boss of the fly wheel
the axis of the hole in the bush being coincident with or parallel to the axis of
the hole in the boss.
Where the key way is to be taper we fit in the hole in the boss of the fly
wheel a slotted bush the axis of the hole in which is not perpendicular but slightly
inclined to the axis of the hole in the boss of the fly wheel as represented in
Figures 7 and 8, the links 3, 3 of the hollow bar 1 permitting the said hollow
bar 1 to take the slightly inclined position represented in the drawings. In this
way a slot having a greater depth at top than at bottom may be machined or
milled.
The application of the said invention to the finishing, that is, simultaneously
finishing or machining the faces and boring, facing and turning the bosses of
pulleys differs in no essential respect from its application to the finishing of a
Ay-wheel as hereinbefore described.
In applying the said invention to purposes other than the finishing or machin-
ing of pulleys and fly wheels, say for example, the machining or finishing of rope
pulleys and rope wheels as represented in Figure 13 the tools are modified to suit
the particular purpose to which the invention is to be applied.
In Figure 13 rotary cutters or milling tools 7 are applied to the vertical
spindle of that part of the machine represented at the right hand side of
Figure 10 which rotary tools or cutters 7 when the machine is advanced to its
work operate on the grooves of the wheel or pulley. The horizontal milling
cutters represented in Figure 13 replace the horizontal scrapers represented in
Figure 10 and simultaneously effect the machining of the opposite edges of the
grooved wheel or pulley as seen in Figure 13.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that we
claim as the said invention:.
-
First In machinery for finishing or machining pulleys, and fly wheels and
for other like purposes,the combination with a machine of the kind herein before
referred to for machining the periphery of the pulley, fly wheel or the like, of a
machine for simultaneously machining or finishing the boss of the pulley, fly
wheel or the like the last named machine being substantially of the construction
herein before described and illustrated in Figures 1 to 12 both inclusive of the
accompanying drawings.
Secondly: In machinery for finishing or machining pulleys and fly wheels
and for other like purposes, the construction and arrangement or combination
of parts herein before described and illustrated in Figures 1, 2, 3, 4, 5 and 6 of
the accompanying drawings for machining the bosses of the said pulleys, fly
wheel or the like the said construction and arrangement of parts consisting
essentially of a radial arm carried by an upright or standard at one end of the bed
of the machine the said radial arm carrying the boring spindle and mechanism
for operating the same, the radial arm being capable of swivelling or swinging
over or from over the bed of the machine and means for locking the arm in its
acting position over the bed of the machine substantially as described and
illustrated.

page_text: Thirdly-In machinery for finishing or machining pulleys and fly wheels
and for other like purposes:-the combination with a machine of the kind herein-
before referred to for machining the periphery of the pulley, fly wheel or the like
of mechanism for simultaneously effecting the machining of both sides of the boss
of the fly wheel the said mechanism consisting essentially of an upper cutter block
keyed to the boring spindle and capable of both vertical and horizontal motion
with respect to the said spindle and a lower cutter block similar to the upper
cutter block but capable of being engaged with and disengaged from the exten-
sion of the boring spindle by means of a clutch substantially as described and
illustrated in Figures 4 and 6 of the accompanying drawings.
Fourthly: A scraper or curved tool of the kind hereinbefore described and
mechanism for carrying and actuating the said scraper or tool, hereinbefore
described and illustrated in Figures 10, 11 and 12 of the accompanying drawings
the said mechanism consisting of a compound slide, the upper or vertical slide
being capable of a rotary motion on the horizontal slide substantially as described
and illustrated.
Fifthly: The construction and arrangement or combination of parts herein-
before described and illustrated in Figures 7, 8 and 9 of the accompanying draw-
ings for milling or machining the key-ways of pulleys and fly-wheels and the like
the said construction and arrangement of parts consisting essentially of a hollow
bar carrying a train of pinions driven and gearing in the manner described and
shown the lowermost pinion carrying a milling cutter or tool the said hollow
bar being preferably capable of a slight swivelling motion on the boring spindle
of the machine substantially as described and illustrated.
Sixthly: The use in combination with machinery of the kind described and
claimed in the preceding claim of a slotted bush for fitting the hole in the boss
of the pulley, fly-wheel or the like the axis of the hole in the bush being inclined
to the axis of the hole in the said boss of the pulley, fly-wheel or the like so as
to permit of the machining of taper key-ways substantially as hereinbefore
described and illustrated in Figures 7 and 8 of the accompanying drawings.
Dated the Thirty-first day of May 1899
W. T. WHITEMAN,
Agent for the Applicants.