Device for Converting Motion.
Year: 1890

page_text: Date of Application, 30th Oct., 1890-Accepted. 6th Dec., 1890
UUMIDELE SI MOITIATIVA
Device for Converting Motion.
I, SEXTUS SLOAN, Gentleman, of Painesville, in the County of Lake, and State
of Ohio, 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 :-
The nature of my invention relates to mechanism to be substituted in place of the
crank on sewing machines or any other kind of machinery, whereby power is com-
municated during the entire revolution thereby overcoming the dead center of the
stroke.
That the invention may be seen and fully understood by others, reference is had to
the following Specification and annexed drawings in which,
Figure 1, is a view of my invention applied to a shaft, rotative.
Figure 2, is an enlarged detached section or interior view showing several of the
parts which are hereinafter fully described.
Figure 3, is an enlarged cross-section of my invention applied to a rotative shaft.
Figures 4, 5, 6, and 7, are views of detached parts of the improved device. The
construction and function of each are fully described hereinafter.
Figures 8, and 9, show the application of the invention to a sewing machine as an
illustration of its operation.
Like letters of reference designate like parts throughout the Specification and
drawings.
Rigidly attached to the shaft b, by means of a key or any known device is a
wheel a, (best shown in Fig. 3) the rim of said wheel extending on each side as
shown in Fig. 3, and having the inner side thereof serrated or toothed as shown in
Fig. 2. The rim of the wheel a, extending on each side as above mentioned forms
two chambers. In each of the chambers in contact with the wheel a, and fitted
loosely on the shaft b, are the disks c, and c¹, Figs. 2, 3, 4, and 5. Pivoted to these
disks C,
and el, at the points d, (best shown in detail views Figs. 4, and 5,) are two
other disks e, and e', of less diameter than the disks c, and c¹. A section of the
periphery of the disks e, and e¹, on either side of the pivot d, is serrated as shown
at, Fig. 4. Passing through and threaded into the disks e, and e¹, in a line
with the pivots d, and the centers of said disks are two screws g, and g', of the form
substantially as shown in Fig. 6, having the pins h, h, attached to their lower
In the
terminals, said pins preferably forming an integral part of the screws.
disks c, and c', are holes, one of which is shown at i, Fig. 5. Said holes i, are so
placed in the disks c, and c', as to admit the pins, of the screws g, and gl. In
the center of each disk e, and e¹, is a hole n, which circumscribes the shaft b, but they
do not come in contact therewith. Fitted loosely on the shaft b, are the geared
wheels or pinions j, and j¹, Figs. 1, 2, 3, and 4; said pinions encase the two chambers
and the disks therein and are provided with boles, one of which is shown at k, Fig. 1.
to admit the heads of the screws g, and g¹.
A frame is attached to the connecting rod, or it may be a part of any device when
it is desired to produce a reciprocating motion; said frame contains two racks 1,
and m, Fig. 1, (m is shown by dotted lines); said racks are so arranged that rack l,
will be in position to engage the teeth of the pinion j, and the rack m, will be in
position to engage the teeth of the pinion j¹. These double racks may be made of
any suitable material, steel or iron being preferable.
The disks e, and e¹, being pivoted to the disks c, and c¹, at d, and having the
screws g, and g', passing through the disks e, and e, and the pins h, entering the
holes i, in the disks e, and e¹ when the screw g, is turned as shown in Fig. 6, with
the pin h, to the left, the eccentricity of the disk e, causes the teeth f¹, to engage

page_text: with the teeth in the rim of the wheel a, which is rigid on the shaft b, where the
pin, comes in contact with the right side of the hole i, but when it comes in contact
with the left side of the hole i, the two disks e, and e, have a common center and the
teeth, and f, are within the periphery of the disk c, and the two disks will revolve
loosely on the shaft b. If the screw g. be turned with the pin h, on the right it will
be seen that the result will be the reverse of that above described for the same
reason.
The pinions, and, being loose on the shaft, and having the beads of the screws g,
and g, protruding through the holes k, therein, will if turned to the right or left
cause the pins h, to come in contact with the right or left side of the holes i, in the
disks
and c, thereby engaging and disengaging the teeth ƒ, and ƒ, with the teeth
in the rim of the wheel a.
C,
As hereinbefore stated the wheel a, is rigidly secured to the shaft b, therefore the
teeth, and f', becoming engaged with the teeth of said wheel a, will cause the
shaft b, and the pinions, and, to revolve together resultant from the screws g,
and g, protruding through the holes i.
e,
To cause the shaft b. to revolve in the same direction on one movement of the rack
frame as it does on the reverse movement the screw g, Fig. 3, is turned so that the
teeth, of the disk e', will engage with the teeth of the wheel a, while the opposite
screw, or screw 7, is turned so that the teeth of the disk
will engage
with the
teeth of the wheel a, consequently when one pinion as j, is revolving loosely on the
shaft, the other pinion . is engaged and vice versa. One pinion is engaged on
the stroke in one direction, the opposite pinion is engaged on the reverse stroke
thereby causing the shaft b, to revolve continuously in the same direction.
In Figs. 8, and 9, 1 have shown the application of the device to the sewing
machine. I have taken this only as an illustration as the device can be applied in
any case where a reciprocating rod or piston is desired. By having this device
attached to a sewing machine, the operator is not required to use either hand to start
the machine, there being no dead center to overcome, the foot being applied to the
treadle is sufficient to start or stop the machine with case at any point desired. Two
wheels with extending rims placed in juxtaposition to each other may be used in place
of the wheel a, and still adhere to the nature of my invention.
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
1st. In a device for converting motion, a wheel rigidly attached to a shaft, having
its rim extending on each side and serrated on the exterior of said extensions in com-
bination with two eccentric disks having their peripheries partially serrated and
situated within two chambers formed by said extensions, operating conjointly with
two pinions or geared wheels by means of screws, the heads of which extend through
holes in said pinions, and the other ends terminating in a pin which is inserted in a
hole in a disk to which the eccentric is pivoted, said pinions being in mesh with two
racks arranged within a frame and operating in the manner and for the purpose
substantially as set forth.
2nd. In a device for converting motion the combination of the geared wheels or
pinions with screws threaded into and through the eccentric disks in line with the
pivot and center of said disks, the heads of said screws protruding through holes in
said pinions. The opposito terminals being pins which are inserted in holes in the
disks to which the eccentric disks are pivoted. Operating conjointly with two racks
arranged within a frame whereby the engagement of the serrated sections of said
eccentric disks with the serrated inner side of the rim of the rigid wheel is caused
substantially in the manner and for the purpose specified.
3rd. In a device for converting motion the combination of the disks C, and c¹,
fitted loosely on the shaft, and the disks e, and e', having their peripheries partially
serrated, pivoted to the disks c, and c¹, and operating independently of the shaft,
-arranged to co-operate conjointly with the screws g, and g', the pinions j, and j', and

page_text: two racks arranged within a frame substantially in the manner and for the purpose
set forth.
4th. Two geared racks secured together in a frame in combination with two
pinions, and j', the screws g, and y', the eccentric disks e, and e', and the wheel a,
whereby a rotary motion is produced in the manner substantially as specified.
Dated this 19th day of September 1890.
SEXTUS SLOAN,
Cleveland, Ohio, U.S.A.