Pulleys and the like.
Year: 1885

page_text: Pulleys and the like.
I, WILLIAM PHILLIPS THOMPSON, Fel. Inst P.A of the Agency for Foreign
Patent Solicitors, 6 Lord Street Liverpool in the County of Lancaster, and
323 High Holborn in the County of Middlesex, Civil Engineer do hereby declare
the nature of the said invention for IMPROVEMENTS IN MACHINES FOR BORING,
TURNING, AND FINISHING PULLEYS AND THE LIKE, (a communication from abroad
by Walter J. Muncaster, and Merwin McKaig, both of Cumberland, county of
Alleghany State of Maryland, United States of America, Manufacturers) and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention relates to machines for boring, turning and finishing pulleys, and
consists in various features and details hereinafter explained.
In the accompanying drawings:-
Figure 1 is a front elevation of the improved machine;
Figure 2, a side elevation ;
Figure 3, a top plan view;
Figure 4, a detail sectional view of the head;
Figure 5, a side view of the machine when used only for turning.
Figures 6 and 7, views illustrating the gearing;
A indicates a frame, of suitable form having a vertically movable tool stock B
mounted in its head and provided with a rotary horizontal bed or table C at a
suitable distance from the floor line and below the head.
D indicates a horizontal shaft, carrying a bevel pinion E, gear wheels F and G,
and cone or series of pulleys H.
In rear or at one side of the shaft D is a second shaft I, carrying gear wheel J,
and pinion K, and carried in eccentric boxes or bearing which may be partially
rotated by a lever L, to throw the gears J, K, into or out of mesh with gears F, G,
of shaft D, this being merely the ordinary arrangement of back gearing used in
lathes or like machinery.

page_text: Motion is taken from pinion E to bed or table C through a shaft M carrying at
its upper end a bevel pinion N and at its lower end a pinion O, which meshes with
a like pinion O' on the horizontal table C.
The cone H affords three changes of speed; the back gear permits this number
to be doubled; and by employing a double speed countershaft the number may be
again doubled, thus giving all speeds required for work up to 40 inches diameter,
For larger machines a greater range of speed should be provided, with, of course,
corresponding increase and decrease of power.
The bed C is provided with radial T grooves, which serve to receive bolts
or movable jaws by which to secure the pulley or like work upon the bed, and as 1
it continuously rotates during the operation of the machine the tool stock is not
required to rotate, but merely to rise and fall to free or withdraw the tool which it
carries.
The boring tool stock B is formed with a rack at its rear end and is moved up
and down as required by a pinion a, secured upon a shaft b, journaled in the head
of frame A, and provided at one end with a worm wheel T, and at the other end
with a hand wheel U, the latter being used to raise the boring tool stock, for which
purpose a radial movement is desirable.
The worm wheel receives motion from a worm V on a shaft c, which is provided
with a gimpal joint d, to permit its front end to be raised or lowered to throw the
worm into or out of gear with the worm wheel.
The forward end of the shaft c is carried by a box e, which is raised and
lowered by an eccentric ƒ provided with a suitable handle, as shown in figures 1
and 2.
Heretofore in this class of machines, no provision has been made for disconnecting
worm wheel T and worm V, and as a consequence the ascent of the boring tool
stock has been slow, but by merely turning the eccentric f and dropping worm V
the shaft bis left free to be rotated by hand wheel U.
The rear end of shaft c is furnished with a gear wheel g, which receives motion
from a pinion h, attached to a cone pulley i, and driven by belt from any con-
venient part of the machine or from a countershaft, as may be expedient. So long
as the worm V remains in gear with worm T, the shaft b and pinion a will be
slowly rotated and the boring tool stock B will be advanced.
It sometimes happens that a continuous and automatic feed is not desired, as for
instance, in centering work upon the bed C, when it is necessary or desirable to
have the boring tool stock under instant control so that the necessary adjustment
of the work may be conveniently made, and when turning a pulley upon a
mandrel, or without the necessity of boring.
In such cases a center is placed in the boring tool stock and another in the bed,
and the stock is lowered until the work is held between the two centers.
For effecting the lowering of the stock for such work, the shaft c is furnished
with a crank or handle ; by which it may be rotated, and when this is to be used
the belt is thrown off the pulley i or off the pulley from which tho belt takes
motion, the handle is turned and the boring tool stock is fed down through the
action of the worm and worm wheel, but by hand feed instead of power.
This mechanism also admits of use as a hand feed for drilling or like work, when
such feed is desirable, and the gimbal joint & permits the front end of shaft c to be
thrown in toward the head of frame A, within easy reach of the operator.
In order to adapt the machine to turning or dressing off the peripheries of
pulleys, or like work, simultaneous with or independently of the boring operation,
the frame A is provided with an upright plate or face W, strongly braced by webs
or ribs, and at such distance from the center of the bed C as to clear any work that
may be placed thereon, and there is placed upon such upright face two sliding
blocks X, each carrying a plate Y capable of being rocked in a vertical plane, and
each plate in turn carrying a slide Z provided with a cross slide 1, the latter
bearing a tool clamp l.

page_text: The main slides or blocks ✗ are preferably connected by a right and left. feed
screw m journaled in frame A, by which the blocks may be moved to or from each
other, a handle being provided at each end of the screw m to permit adjustment
from either side of the machine.
Each slide Z is furnished with a feed screw n, carrying a hand wheel o, and
ratchet wheel p, the former for feeding by hand, and the latter constituting part of
an automatic or power feed, the screw serving to raise and lower the cutting tool
and its supporting devices. In like manner each cross slide k is furnished with a
feed screw, q, by which the tool may be moved toward or away from the center of
bed C independently of the sliding blocks X and while the latter remain at rest.
As shown in figures 2 and 3, the plates Y are each formed with a forwardly
extending web, braced and stiffened by ribs or flanges and spread or widened at the
front to form a guide and support for its slide Z, the forward projection of the web
being such that together with the slide Z and cross slide k the tool shall be brought
into line with each other in a plane parallel with upright face W of frame A and
in line with the axis of tool stock B or approximately so.
By means of screw, m, the turning tools r carried by the clamps k, may be set
apart far enough to clear the work secured upon the bed C; by screws, n, the
vertical adjustment of the tools may be regulated, and when proper connection is
established, with the feeding gear of the machine the tools are caused by said screws
to move up or down to dress the periphery of the work; and finally, by means of
the feed screws q, the tools may be advanced or receded independently, quickly, and
to the extent required.
Motion is given to each of the ratchet wheels, p, by a spring-sustained pawl or
dog 8, carried by a plate t, arranged to swing horizontally about the stem or
screw, n, and connected by a rod or pitman u, to the crank pin or a crank wheel
or disk v, carried by a vertical shaft w.
The two vertical shafts, w, are each furnished with a bevel pinion y, each of
which pinions receives motion from a horizontal cross shaft x provided with bevel
pinions and a¹, the latter meshing with and receiving motion. from a bevel
pinion P, on a shaft Q, provided with a bevel pinion R to which motion is given
by a bevel pinion S on the shaft of bed C, as shown in figures 5, 6 and 7.
The crank pins of the disks vare adjustable in radial slots e¹ to vary the throw
of the plates t and consequently the feeding action of the screws n.
In order to permit the feed slides to be set for taper work, the plates Y are so
mounted that they may be rocked in a vertical plane, as already mentioned, and in
order to secure them rigidly in any adjusted position the plates are provided with
curved slots f¹ through which pass clamping bolts g', as best shown in figure 1.
To permit such adjustment of the plates without interfering with the con-
necting rods or pitmen u, the connection of said pitmen with the crank pins is
advisably made in the form of a ball and socket joint, the opposite ends of each
being passed through and clamped in an eye or opening in the swinging plate t by
a set screw h¹ as shown in all the figures.
This machine can bore and turn pulleys at one and the same operation or per-
form either operation independently, thus permitting a large amount of work to be
done in a short time, ensuring perfect concentricity of the eye and rim, and
avoiding the necessity of two expensive machines by adapting the one machine to
do the work of both.
The turning appliances can be applied to boring and drilling machines already in
use, and thus the value of such machines may be vastly enhanced at a comparatively
small cost.
The saving of space effected by this invention is also an item of marked
importance in machine shops, and one operator or attendant may do the work
bitherto performed by two.
One turning tool may be used instead of two, if preferred.
Figure 5 shows the machine when designed for turning alone, the boring bar or
stock B being replaced by a centering arbor or tail stock.

page_text: Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is
1. In a machine for boring and turning pulleys, the combination of a frame, a
rotary bed to receive and hold the work, a boring tool stock, and turning tool
holders wholly independent of the boring tool stock and its feed mechanism, adjust-
able toward and from the center of the bed substantially as and for the purpose set
forth.
2. In combination with a main frame, a rotary bed or table, a drill or boring
tool stock perpendicular to the table and a tool holder adjustable to and from the
drill stock, and wholly independend of said stock and its feed.
3. In combination with a frame, a rotary bed or table, a drill or boring tool
stock, perpendicular to the bed, and a tool holder adjustable to and from the drill
or boring tool stock, and also adjustable in the direction of the length of the boring
tool stock, said tool holder being wholly independent of the boring tool stock and
its feed.
4. In combination with a frame, a, rotary bed, a drill or boring tool stock per-
pendicular to the bed, and a tool holder adapted and arranged to be moved toward
or from the drill stock, to be moved in line with the axis of said stock, and to move
at an angle to said axis but in the direction of its length.
5. In combination with a frame, a rotary bed, a drill or boring tool stock per-
pendicular to and adjustable to and from the bed, a rotary support mounted upon
the frame and adapted to be adjusted vertically, horizontally, and at intermediate
angles, substantially as set forth.
6. The herein-described pulley boring and turning machine, consisting of frame A,
boring tool stock B, rotary bed C upright face W, sliding block X, plate Y, slide Z
and cross slide k, the block X and slides Zk, being each provided with a fixed
or adjustable screw, all combined and arranged to operate substantially as
described.
7. In combination with a supporting frame and a vertically movable drill or
boring tool stock, a feed shaft provided with a pinion to engage with and move
said rack, and with a hand wheel and a worm wheel, a worm, a shaft carrying
said worm, adapted to be moved to throw the worm into or out of gear with the
worm wheel, and connected with a rotary member of the machine,-and a crank or
handle applied to said shaft by which to turn it manually; whereby a power feed
may be produced automatically or manually at will and a quick return of the drill
stock may be effected independently of the power feed.
8. The combination substantially as described and shown of frame A, vertically
adjustable stock B, shaft b, provided with pinion a, worm wheel T and hand
wheel U, and shaft c provided with worm V, handle J and pinion g to receive
motion from the driving gear, said shaft and worm being adjustable to and from
the worm wheel.
9. The combination substantially as described and shown of frame A vertically
adjustable stock B, bed C, shaft b provided with pinion a, worm wheel T, and hand
wheel U, shaft c provided with worm V, handle j and flexible joint d, box e sup-
porting said shaft, and eccentric f adapted to move said box and shaft and throw
the worn and worm wheel into and out of gear.
10. In combination with frame, A, stock, B, and rotary bed C, upright face W,
vertically movable slide Z, feed screw n, ratchet wheel p, plate t, dog 8 carried by
said plate, crank disk vand pitman u connecting the plate t and crank disk
substantially as described and shown.
11. In combination with frame A, stock B, and rotary bed C, upright face W,
rocking plate Y, slide Z mounted upon said plate, feed screw n provided with
ratchet wheel p, plate t, dog s carried by said plate, crank disk v, and pitman u,
connected with the crank pin of disk v by a universal joint, and adjustably con-
nected with the plate t, substantially as set forth.

page_text: 12. In a machine for turning pulleys, the combination of a frame, a rotary bed
to receive and hold the work, and turning tool holders adjustable to and from the
center of the bed substantially as and for the purpose set forth, and wholly
independent of the boring tool stock and its feed.*
13. In a machine for turning pulleys, the combination of a frame, a rotary bed
to receive and hold the work, a stock movable to and from the center of the bed,
and turning tool holders adjustable to and from the center of the bed and wholly
independent of the boring tool stock and feed.
Dated thin h
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