Improvements in Turning and Drilling Machines.
Year: 1890

page_text: Date of Application, 15th Apr., 1890-Accepted, 31st May, 1890
COMPLETE SPECIFICATION.
Improvements in Turning and Drilling Machines.
I, WILLIAM WATTIE, of Worcester, in the County of Worcester, and State of
Massachusetts, one of the United States of America, Manufacturer, do hereby declare
the nature of my invention and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statements :-
My invention relates to turning and drilling machines, in which the pieces to be
turned and drilled are fed to the machine through a magazine; and the object of my
invention is to provide a machine for turning and drilling pulleys, and other metal
pieces, which shall be automatic in its operation and my invention consists in certain
novel features of construction and operation of a turning and drilling machine,
as will be hereinafter fully described, and the nature thereof indicated by the
claims.
Reformin

page_text: and 15 are fast together and turn freely on the pin 31, fast in the arm 32, which
turns freely on the worm shaft 13, and is held rigid to the bed 1 by the screw 33,
Fig. 1. The velocity of the worm shaft 13 can be altered by changing the gear 14
for one of greater or less number of teeth, and the slot 34 in the swinging arin 32 is
to allow for change of position in bringing the two gears 12 and 14 into mesh.
The rotation of the worm shaft 13 in the bearings 35 causes the revolution of the
three cam shafts 17, 18 and 19 by the worms 20, 21 and 22 fast on the shaft 13 (22
being shown in Figure 2 by the removal of some parts of the machine) meshing
respectively with the worm gears 23, 24 and 25 which are fast respectively on the
shafts 17, 18 and 19.
The feed cam 26 is fast on the shaft 17 held in the bearings 36 and 37, Figure 5,
and by its rotation in the direction of the arrow, Figure 1, gives motion to the
segment gear lever 27, hung freely on the pin 38 by the roll 28 at the lower end of
the segment gear lever 27 travelling freely in the groove of the cam 26. The segment
gear lever 27 meshes with the rack 29 in the feed plunger 30, carried in the
bearings 39 of the head stock 40 and parallel with the shaft 8 causing the feed
plunger 30 to move in accordance with the shape of the cam 26, the rack_29
answering for a key or feather, by passing through the bearings 39, and so preventing
any rotating movement of the feed plunger 3.
Figures 6 and 7 show an enlarged detail drawing of the feed plunger 30. The
plunger 30 is hollow, and the central part of the chainber 41 is so large that the drill
carrying spindle, will not touch it, but will bear only at the end of the feed plunger,
toward the mill or cutter head, at the smaller part 42 of the chamber, thus giving
small friction surface.
The extreme end of the plunger 30 has a recess 43 of such a size as to freely admit
the hub of the pulley to be turned and drilled; while the smallest part of the
chamber 44, which opens into the recess 43, is just the size of the drill used and is
perfectly concentric with the outside of the plunger. The bevelled end 45 of the
plunger 30 is intended to fit into and fill the inside edge of the rim of the pulley to
be turned and drilled; and when the pulley is pressed upon the plunger 30, by the
grip bar, the rough pulley is centered by the inside edge of the rini, and the hole
is bound to be drilled concentric with the inside edge, and consequently with the
outside surface, after the plunger has fed the pulley through the cutter end 11.
Therefore the result must be a concentric and well balanced pulley.
•
The grip cam 46 fast on the shaft 18, held in the bearings 18', revolves in the
direction of the arrow, Figure 1. The roll 46' travels freely in the groove of the
cam 46, and imparts the motion of the cam 46 to the slide bar 47, which slides freely
in the bearing 48 in a direction parallel to the shaft 8 and the plunger 30; and the
motion is conveyed from the slide bar 47 to the grip bar 49 through the fastening 50,
made fast to the slide bar 47 by the screw 51, Figure 1, and holding the grip bar 49
by the set screw 52. The grip bar passes through the hollow center of the shaft 8,
and has a bearing only at the end near cutter head 11, to give as little friction surface
as possible.
Figures 8 and 9 show an enlarged detail drawing of the grip bar. The end 53 has
a recess 54 at the extreme end, of such a size as to freely admit the hub of the pulley
to be turned and drilled; and a still deeper recess 55 to receive the end of the drill,
when it shall have passed through the pulley; the extreme end of the part 3 is
provided with notches 59 which fit loosely into the holes 56 in the web 57 of
the pulley, Fig. 12, and prevent any tendency on the part of the pulley to rotate
the diameter of the end of the bar 53 being small enough to press against the
web 57 of the pulley without touching the rim 58 of the pulley.
The part 60 of the grip bar is chucked out to freely receive the end 61 of the
bar 53. The coil spring 62 is put on under compression, and is held so by the
pin 63 driven fast into the end 61 and passing through the slot 64 in the piece 60
the spring 62 can now no longer expand, but the slot 64 will allow a certain amount
more of compression.
The grip cam 46 is turned to somewhat compress the spring 62 every time a pulley

page_text: is gripped and centered, and this compression will be greater or less according to the
imperfections in the different pulleys of a certain class and size.
The drill cam 65 is fast on the shaft 19, held in the bearings 66, and revolves in
the direction of the arrow, Figure 1. The roll. 69 travels freely in the groove of the
cam 65, and imparts the motion of the cam 65 to the slide bar 67, which slides freely
in the bearings 68, in a direction parallel to the shaft 8, and the plunger 30. The
motion of the slide bar 67 is conveyed to the drill carrying spindle 70, through the
connection 71, made fast to the slide bar 67 by the screw 72, Figure 1, and forked at
the hub 73 so as to allow the spindle 70 to turn freely within the fork.
The drill pulley 74 is fast on the shaft 75 which is carried by the bearings 76 in
the head stock 77. The shaft 75 is hollow, and the spindle 70 is of a size to slide
freely backward and forward through it on a feather or key, so that the spindle 70
will revolve when the pulley 74 revolves. The drill 78 is fast on the end of the
spindle 70 and has a bearing in the part 44, Figure 6, of the chamber within the
plunger 30.
The driving of the pulley 74, and consequently the rotating motion of the drill 78,
is effected by a belt from a counter shaft over head, (not shown) and is entirely
independent of the motion of the main driving pulley 2, while the longitudinal
motion of the drill 78, and the spindle 70, is directly through the medium of the
pulley 2.
The pulleys or rolls 8 are fed to the machine by means of the magazine or feed
chamber 79 used in connection with the magazine and made as large as practicable is
the receiving table 80 which is supported by the stands 81, Figure 5, both of which
are removed in Figure 2, and only one of them shown in Figure 1.
At the lower end of the magazine 79 is the shelf 82 which is in a position to
bring the roll or pulley resting upon it in a line with the plunger 30 and grip
bar 49.
The operation of the machine is as follows:-
Supposing the drill pulley 74 to be running and the magazine filled as represented
in the drawings, by the pulleys 83 the feed plunger 30 in its extreme rearward
position, which allows a pulley to drop on to the shelf 82, between the plunger 30
and the grip bar 49 which is advancing toward its extreme forward position. The
pulley as it rolls from the end of the magazine, is kept from falling on to its side by
the
pressure of the light flat spring 84 see Fig. 5 under which it has run by its own
momentum, and which is fastened to the shelf 82 of the magazine.
The cam shaft 17 turns in the direction indicated by the arrow, and the plunger 30
advances and moves the pulleys toward the cutter head 11. The cam shaft 18 turns
in the direction indicated by the arrow, and the grip bar 49 advances to its extreme
forward position and grips the pulley firmly against the plunger 30, thereby centering
it with the cutter head, the spring 62 in the grip bar 49 is somewhat compressed,
and thus allows for any variation in thickness of the different pulleys.
The plunger 30 starts forward rapidly at first, as the roll 28 on segment gear
lever 27 passes from the point a to the point b, on the cam 26, Fig. 11, and the pressure
of the flat spring 84 maintains the pulley in its upright position.
The several cams are so timed that the grip bar 49 arrives at its extreme forward
position just before the cam roll 28 reaches the point 6, on the cam 26, and the firm
gripping and the centering of the roll and the compression of the coil spring 62 is
the consequence.
The plunger 30 and the grip bar 49 now move together toward the cutter head,
carrying the roll firmly between them, and in passing through the cutter head the
pulley is turned to the required size.
Meanwhile the shaft 19 has been turning in the direction indicated by the arrow.
and the cam 65 is so timed that the drill 78 is advanced just as the pulley is gripped
by the grip bar 49 the shape of the drill cam 65 is much steeper than the feed
cam 26, causing the drill to overtake the pulley and pass through it, drilling a uniform
hole concentric with the turned surface, the drill passes through the pulley and is
withdrawn just as the pulley passes wholly through the cutter head and drops down.

page_text: When the roll 46' on the slide bar reaches the point c, Figure 10, in the cam 46,
the grip bar 49 is rapidly withdrawn, as the roll passes down the steep incline of the
cam to the point d, and the finished pulley is allowed to drop below, through the
cutter-head into a box placed for its reception.
The roll 28, of the cam 26 now passes from the point to the point g, bringing
the plunger 30 to its original position and the roll 46¹ advances to the point h, on the
cam 46 and the operation is completed.
My machine above described is "specially adapted for turning and drilling the
rolls used on the pattern chains of looms, one of which is shown full size in
Figure 12.
It will be understood that the details of construction of the several parts of my
machine may be varied from what is shown and described, and equivalent devices
used without departing from the principle of my invention.
Having now particularly described and ascertained the nature of iny said inven-
tion, and in what manner the same is to be performed, I declare, that, what I
claim is :-
1. In a turning and drilling machine, the combination with mechanism for gripping
and centering the rolls or pulleys, and mechanism for feeding them to the cutter head,
and means for operating said mechanisms, of mechanism for drilling the center hole in
said rolls or pulleys, and mechanism for turning the exterior surface thereof, and
means for operating said mechanisms, all combined together and operated, substan-
tially as set forth.
2. In a turning and drilling machine, the combination with the grip har, and
means for operating the same, and the feed plunger, and means for operating the
of the drill carrying spindle, and means for operating the same, and the cutter
head, and means for operating the same, and the magazine or feed chamber, substan-
tially as and for the purpose stated.
same,
3. In a turning and drilling machine, the combination with a cam actuated
gripping bar, a cam actuated feed plunger to co-act with the gripping bar, to grip
and feed the roll or pulley to the cutter head, of the cutter head, and means for
operating the same, and a cam actuated drill carrying spindle moving longitudinally,
and adapted to revolve, and means for revolving the same, and a magazine or feed
chamber, substantially as shown as described.
4. In a turning and drilling machine, the combination with the cam actuated
reciprocating grip bar, having a spring actuated gripping end and notches at its
extreme end for the purpose stated, and a recess to receive the end of the drill, and a
cam actuated reciprocating feed plunger, having a recess in its end, for the purpose
stated, and in combination with the grip bar to hold and center the roll or pulley and
feed it into the cutter head, of the cutter head, and means for operating the same to
turn the outer surface of the roll or pulley, and a cam actuated reciprocating and
revolving drill carrying spindle, extending longitudinally through the fee plunger,
and a magazine or feed chamber, substantially as set forth.
5. In a turning and drilling machine, the combination with the cam actuated
reciprocating grip bar, and a cam actuated reciprocating feed plunger, in combination
with the grip bar to hold and center the roll or pulley and feed it into the cutter head,
of the cutter head, and means for operating the same, and a cam actuated reciprocating
and revolving drill carrying spindle, and a magazine or feed chamber, all combined
together and operated, substantially as shown and described.
Dated this Twentieth day of March 1890.
WILLIAM WATTIE.
By H. B. Barlow,
Agent for Applicant.