New or Improved Motion-reversing Mechanism.
Year: 1899

page_text: Date of Application, 14th Nov., 1899-Accepted, 6th Jan., 1900
COMIDELE DI DUITIVATION.
New or Improved Motion-reversing Mechanism.
I, ROBERT EWING, of 92, 14th Street, Troy, State of New York, United States
of America, 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:-
71
This invention is an improvement in mechanism for reversing motion, or
for imparting reverse rotary movements from a shaft or pulley rotating con-
tinuously in one direction; and it has especial reference to the production of
self-controlled motion reversing mechanism as will be fully understood from the
following description taken in connection with the accompanying drawings
which explain the invention in detail while the claims state concisely the essential
features thereof.
In the accompanying drawings:
Figure 1 is a part sectional elevation of the preferred form of the motion
reversing mechanism.
Figure 2 is a partly vertical section end view of Figure 1.
Figure 3 is a detail section on line 3-3, Figure 1.
Figure 4 is a view similar to Figure 1, showing a modification.
Figure 5 is a section on line 5-5, Figure 4.
Figure 6 is a sectional view similar to Figure 1, showing another modifica-
tion of the device, and
Figure 7 is a sectional view on line 7-7, Figure 6.
Figure 8 is a top view of plate G.
A designates a tubular shaft which is journaled in suitable bearings in a
frame Z which may be of any suitable construction, and as shown is a metal
frame adapted to be formed on or secured to the machine to which the motion
reversing mechanism is to be applied. Upon this shaft, intermediate the bear-
ings, are mounted two oppositely facing dises B, B₁ disc B being keyed to
the shaft A, while disc B is loose thereon. Surrounding and enclosing the peri-
pheries of these discs is a pulley C, which, as shown, has a hub C large enough
to allow the discs B, B', to be fitted into the ends thereof and center the pulley,
upon the shaft A. Attached to the inner face of disc B, are the opposite clutch
blocks b, b, (see Figure 3) which may be operated by means of links d, connected to an
annulus D rotatably guided in a Hanged collar within the hub C¹ and between
the discs B, B. By sliding collar E on shaft A, the clutch blocks are thrown
into and out of engagement with the hub C and thus may be caused to lock
disk B to the pulley, or release it therefrom, as desired. To the inner face of
disc B are attached similar clutch blocks which are connected by links &
to an annulus D' loosely mounted on collar E beside but independently of
annulus D, and by properly shifting collar E, the dise B may be locked to the
pulley C or released therefrom, as desired. It is obvious from the drawings
that when disc B' is locked to the pulley, dise B is disengaged therefrom, and
It is also possible, by shifting the collar E to a central position, to
disengage both discs from the pulley,
vice versa.

page_text: As a matter of convenience, the collar E may be made of opposite similar
halves, E, E, secured together by screws or bolts E each provided with an
external flange e on its outer edge and with an internal, annular recess e near
its lower edge, which recesses together form an annular groove E³ in the
collar around the shaft A, and into this groove project the ends of a pin f which
transfixes shaft A and is fastened to a rod F within shaft A, the pin f being
rigidly connected to rod F and rotating with shaft A and capable of movement
longitudinally of said shaft which is provided with slots A to permit this.
The shaft projects beyond one end of shaft A, as shown, and on its projeot-
ing end is journaled an arm which is so connected to the shaft, as indicated,
that the latter can revolve freely in the arm but has no longitudinal play there
through. The end of this arm is connected to a longitudinally movable hinged
plate G which plate is provided with depending eyes g, g', 9, which are trans-
fixed by a pin a, which latter also transfixes and is supported by ears 21 rising
from the adjoining bearing . As shown the eye is intermediate the ears ' ;
the oyes g, g, are on the projecting end of the plate and receive between them
the upper end of arm F which is also transfixed by pin F. In this manner,
longitudinal movement of plate G causes a similar movement of rod F through
the arm and vice versa. This plate G is provided with a weighted finger G
by which it can be turned on its hinged rod H and is also provided with a pro-
jecting notched finger G, the notch in which is adapted to engage a lug 23
when the plate is shifted longitudinally so as to cause rod l' to move the collar E3
into the intermediate position where neither disc B nor B¹ is looked to the
pulley, ie, in the position shown in Figure 1 where the pulley C can run idly.
The operator can, by shifting plate G to the right or left, lock either disc B
or B to the pulley, but the principal object of this invention is to automatically
accomplish the alternate locking of the discs B, B, to the pulley, and to effect
this the plate G is automatically shifted by the following means.
The plate G is provided with a lateral extension (which when the plate is
turned into the position shown in Figures 1 and 2 (80 as to hold arm out of
engagement with lug 2) assumes and maintains a horizontal position owing to
the weighted arm G. The underside of extension G³ is provided with a notch G
which is adapted to engage the upper end of a vibrating lover H (pivoted at its
lower end on a pin H attached to frame Z) provided with an extension H in
which is a cam slot that is traversed by an eccentric pin on a worm gear I,
which is journaled on a pin 2 attached to the extension Zon the main frame
as shown, so that for each rotation of worm I the lever H is once vibrated
back and forth.
The cam slot in extension H, is preferably so shaped as to give a consider-
able dwell or rest to the lever II at each end of its stroke. The worm wheel I
is operated by a worm J loosely mounted on shaft A and rigidly connected to the
hub of pulley C by means of a web e as shown so that worm J is rotated con-
tinuously with a pulley.
It will be obvious from the foregoing that so long as lever H remains in
engagement with the notch G, and while the pulley is being driven, the plate G,
and through its connections the rod F, will be reciprocated so that through the
described connections the discs B, B', will alternately be engaged with and
released from the pulley C. When disc B is engaged with the pulley the shaft A
is rotated and motion may be communicated therefrom by means of a pinion A
keyed to the shaft as shown. When dise B is locked to the pulley the shaft A
is not necessarily rotated but motion may be communicated from the pulley
through disc B to a compound gear K journaled on a spindle L, rigidly
attached to the frame Z as indicated in the drawings, and from this compound
gear K motion may be transmitted in a contrary direction to the part to be
moved, it being obvious that the gears A and K will rotate in opposite
directions.

page_text: From the foregoing description it will be obvious that the operator can dis-
engage plate G from lever H, and can, by hand, shift it and rod F so as to
engage either disc B or B with the pulley, or can shift the plate so that neither
clutch will be engaged; or by dropping the plate to the position shown in
Figure 2 the lever H will enter notch G of plate G (the opposite sides of
extension being beveled or rounded as shown so as to facilitate the engage-
ment of the lever with said notch) and so long as the lever remains in engage-
ment with the notch and the pulley is driven the clutches will be alternately
shifted so as to alternately lock the discs B and B to the pulley and thus while
the pulley C may be driven continuously in one direction reverse motion may be
transmitted through the gears A' and K.
In the modification shown in Figure 4 the web of the pulley C is omitted
and its hub is utilized as its periphery; further in this case the pulley is con-
struoted in two opposite halves L, L, which enclose the discs M, 31, and
their clutch devices. Part L is connected to the worm J and is thereby journaled
upon the shaft while part L' is journaled upon the hub of the disc M which
substantially corresponds to disc B', in Figure 1. The clutch blocks and the
connections between the clutch blocks and the links are slightly different from
those shown in Figure 1, but the remaining essential portions of the apparatus
are substantially alike in both Figures 1 and 4.
.
In Figures 6 and 7 another modification of the pulley and clutch devices is
illustrated. In this the disc B is omitted. The pulley N is connected to the
worm Jas before but is provided with an annular web N¹ which carries both
sets of clutch blocks o, p. The clutches are adapted to engage the flange ()'
of a disc which has a long hub 02 journaled upon the shaft and carrying on
its extremity the gear A. The clutches are adapted to engage the flange Pl
of a disc P, the hub P of which is journaled upon the hub 08 of the disc O,
and carries the gear which engages the compound gear K. The operation
and construction of the remaining portion of the apparatus are substantially
identical with that shown in Figures 1 and 4. And further explanation thereof
herein is unnecessary.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. A motion reversing device substantially as shown and described comprising
a pulley, opposite clutch devices adapted to engage therewith; and a worm
driven by said pulley, a worm gear operated by the worm and provided with on
eccentric pin, and a vibrating lever having a cam slot engaging said pin; with a
longitudinally movable plate reciprocated by the lever, and connections between
Baid reciprocating plate and the clutch devices, substantially as described.
2. The combination of a pulley, opposite clutch devices adapted to engage
thorewith, a worm driven by said pulley a worm gear operated by the worm and
a vibrating lever operated by said worm gear; with a longitudinally movable
and tilting plate having a notch adapted to engage said lever when the plate is
thrown in one position, said plate being reciprocated by the lever when engaged
therewith, and connections between said reciprocating plate and the clutch
devices, for the purpose and substantially as described.
3. In a reversing mechanism, the combination of a shaft, the opposite disca
thereon, one of said discs being keyed to the shaft, the other loose thereon, the
pulley enclosing said discs, the opposite sets of clutch devices, respectively con-
nected to the discs and adapted to alternately engage the pulley, and mechanism
substantially as described for operating said clutch devices.
4. The mechaniant for reversing motion or imparting reverse rotary movements
from a shaft or pulley rotating in but one direction, substantially as shown
and described with reference to Figures 1, 2 and 3 of the drawings.

page_text: 5. The modification of the mechanism set forth in Claim 4 substantially as
shown and described with reference to Figures 4 and 5 of the drawings.
6. The modification of the mechanism set forth in Claim 4 substantially as
shown and described with reference to Figures 6 and 7 of the drawings.
1000
R. EWING,
Por W. H. Beck,
115, Cannon Street, London, Agent.