Improvements in Uprighting Lathes.
Year: 1892

page_text: Date of Application, 22nd Nov., 1892-Accepted, 4th Feb., 1893
COMPLETE SPECIFICATION.
Improvements in Uprighting Lathes.
I, DUANE HERBERT CHURCH, of Lennox Street, West Newton, Massachusetts,
United States of America, Gentleman, 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 this invention is to produce a means for drilling the pivot-holes in
the frame-work of watches for the pivots of the respective shafts, to so perform the
work as to ensure the uprightness of the axes of the pivots and bring the holes on
each side of the frame in exact alignment, to provide a caliper-device for gauging
the size of the pivot-holes to correspond with the respective shafts for which they
are intended, also to provide a means for drilling the holes for one shaft in both
sides of the frame at the same time, said holes being of a size to exactly fit the pivots
of said shafts.
The invention consists in certain features of novelty more particularly pointed
out in the claims, being first described with reference to the accompanying drawings,
in which:
Figure 1 is a front elevation, partly in section, of a machine constructed according
to my invention.
Figure 2 is a plan of the same.
Figure 3 is an end elevation.
Figure 4 is a detail of the tool-adjusting rod, showing the springs which hold it
by frictional contact within the tool-carrying sleeve.
The machine consists of a frame constituting the bed 1, legs 23 and base 4.
Mounted in this frame beneath the bed 1, journalled in the legs 23, is the main
shaft 5, deriving its motion through worm 6 and gear 7, Figure 1. This shaft
carries the cams 8 9, which operate to feed the drilling tools to their work, through
the medium of levers 12 121, having their fulcrum in the bed 1 of the frame.
Interposed between the legs 2 3 and levers 12 12¹ are springs 10 10', which act in
opposition to cams 89, and return levers 12 12¹ to position, when released by said
cams.
Supported on the bed 1 to the left is a standard 13, carrying a hollow live
spindle 14, to which rotary motion is imparted by pulley 15. At the extreme right
or inner end, the spindle 14 is provided with a face-plate 16, adapted to receive and
hold the work to be operated upon. Within the spindle 14 is a tubular cutter-
holding spindle 17, which carries at one end the tool-holder 18. At the other end,
the cutter-holding spindle 17 is provided with a sliding dog 19, which holds said
cutter-bolding spindle from partaking of the rotary motion of the spindle 14, but
allows free longitudinal movement within said spindle, by reason of the dog 19,
sliding upon the pin 20 projecting from the standard 13. Within the cutter-
holding spindle 17 is placed the tool-operating rod 21, formed on its inner end with
an inclined face 22, which by a longitudinal movement of said rod 21 acts upon the
rear of the tool-holder 18 to throw the tool 16' more or less out of the axial line of
spindle 14, according to the size of hole it is desired to drill. This longitudinal
movement on the rod 21 is accomplished by sliding bar 23, operating through hand-
lever 24 upon the lower end 25 of lever 26 fulcrumed at 27, the upper end 28 of
which acts upon said rod 21 to thrust it inward. When thrust into place, the
rod 21 is held by springs 21', which expand against the cutter-holding spindle 17
and act to hold said rod to any position it may be set by lever 26 (see Figure 4).
Rod 21 is held from rotating within cutter-holding spindle 17 and allowed free
longitudinal movement by pin 21" and slot 21. Rod 21 is withdrawn from cutter-
holding spindle 17 by lever 12 operating upon collar 29.

page_text: Supported by.bed 1 is a post 30, carrying an adjustable stop-screw 31, which
limits (by contact with the dog 19) the withdrawal of the tool-carrying cutter-
holding spindle 17, which is withdrawn by spring 32, when released by lever 12.
Projecting from standard 13 is a slotted plate 33 for receiving and supporting
the shaft for which the hole is to be bored in the frame-work of the watch, while
the caliper-device is setting the tool 16¹ to position for cutting the hole of the
proper size.
The caliper-device consists of a stationary and a movable jaw, the stationary
jaw 34 projecting from standard 13 directly under and in line, or nearly so, with
the slotted plate 33. The movable jaw 35 of the caliper is carried by the sliding
rod 23, which is supported in brackets 23' attached to the bed 1.
The standard 131 and other parts supported by the bed to the right of the
machine, are exact duplicates and operate in exactly the same manner as those
above described; the hollow spindle 14 and its necessary parts being removed, as
they operate only for holding and rotating the work. Similar reference letters
have consequently been placed upon the corresponding parts to the right of the
machine, there being no description necessary.
Any suitable shipping device may be employed for stopping the machine between
the successive operations, such as a pin 37 on collar 38 operating to trip lever 39 for
shifting the belt.
The operation of the machine is as follows-
The frame-work of the watch is clamped to the face-plate 16. The shaft for
which the holes are to be drilled is first placed in the plate 33 to the left of the
machine, bringing the pivot in line to be operated upon by the caliper. The
operator then moves bar 23 to the left and clamps the pivot between the jaws 34 35
of the caliper. This movement of bar 23 operates lever 26, and thrusts in rod 21,
which adjusts tool 16¹ to a position more or less eccentric to the axial line of the
spindle 14 according to the diameter of the pivot in the calipers. This adjustment
places the tool 16' in a position for drilling a hole of exactly the size corresponding
to the pivot in the caliper, and springs 21¹ hold rod 21 in the position set by the
pivot.
The operator now removes the shaft from the caliper, reverses it, and places the
pivot at the opposite end, in the plate 33 at the right of the machine, which brings
the pivot in line to be operated on by the calipers at the right of the machine.
Bar 23 is now moved to the right, and the jaws 34 35 to the right clamp the pivot,
and the tool to the right of the machine is adjusted to proper place in the same
manner as was tool 16¹.
The tools are now in proper position for cutting the holes for the pivots of this
particular shaft.
The machine is now put in motion. Pulley 15 revolves spindle 14 and face-
plate 16 which is carrying the work to be operated upon. Worm and gear 67
rotate shaft 5 and cause cams 89 to slowly feed the tool carrying cutter holding
spindles 17 inwardly, through the medium of levers 12 12', and the holes are bored
in the frame-work clamped on the face-plate 16. When the main-shaft 5 has
turned about one-half a revolution, the cutting tools have completed their work,
and the lower ends of the levers 12 121 are resting upon the highest part of the
cams 89, and from this point, as the shaft 5 continues to turn, the cams 89 release
the levers 12 121 and allow springs 10 10¹ to act to return said levers to first
position, which takes place when the shaft 5 has completed the revolution. This
return of levers 12 12¹ releases the tool-carrying cutter-holding spindles 17, and
allows springs 32 to withdraw said cutter-holding spindles until the dogs 19 come
in contact with stop-screws 31, at which point the drilling tools reach first
position, and the machine is ready to repeat the operation. At this point pin 37,
carried by collar 38 on main shaft 5, trips lever 39 and shifts the driving-belt to
stop the machine for enabling the operator to remove or adjust the work on the
face-plate.
I believe it to be new in uprighting lathes to provide a hollow spindle with a

page_text: cutter movable laterally within the spindle, and means located within the spindle
for controlling the lateral position of said spindle and thereby causing it to cut a
hole of any desired size, the size of the hole depending upon the distance to which
the cutter is adjusted from the axial line of the spindle; hence I do not limit myself
to the means here shown for adjusting the cutter-holder laterally.
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-
—
Ist. In an uprighting lathe, the combination of two cutter-holding spindles located
in line with and facing each other and provided with laterally adjustable cutters
at their adjacent ends, means for moving said spindle simultaneously endwise in
opposite directions, and a live spindle enclosing one of said cutter-holding spindles
and provided with a work-holder adapted to hold and rotate a piece of work between
said cutters, as set forth.
2nd. In an uprighting lathe, the combination of a cutter-holding spindle provided
at one end with a laterally adjustable cutter, means for moving said spindle end wise
to present its cutter to a piece of work, and a rotating hollow spindle enclosing the
cutter-holding spindle and provided with a work-holder arranged to hold and rotate
the work in position to receive the action of the cutter, as set forth.
3rd. In an uprighting lathe, the combination with a rotary hollow spindle, of a
cutter-holding spindle located within said spindle and provided with a laterally
movable cutter-holder, means for moving said cutter-holding spindle lengthwise of
the rotary spindle, an adjusting device engaged with the cutter-holder and adapted
to move the same laterally to vary its position relatively to the axial line of the
rotary spindle, a caliper-device and connections between it and the adjusting device
whereby the cutter may be adjusted, as set forth.
Dated this 25th day of October 1892.
DUANE HERBERT CHURCH.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.