Improvements in Sewing Machines.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Sewing Machines.
I, CHARLES MADISON HINE, Inventor, of Eagle Power Building, Sandusky
Street City of Allegheny, in the County of Allegheny, and State of Pennsylvania,
U.S.A. 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 :-
My invention relates to an improvement in sewing machines; and it consists
in the needle carrying arm, and its peculiar connection with the main shaft, as will
be more fully described hereinafter.
The general objects of my invention are to produce a sewing machine in which
an enormously high rate of speed is obtained with but small cost of maintenance;
ready adjustment; simplicity of repairs; direct connections with no multiplied
motions; and to make the needle carrying arm feed the goods being operated upon.
Fig. 1 is a perspective of a machine which embodies my invention.
Fig. 2 is a side elevation.
Fig. 3 is an end view.
In this application I confine my invention to the construction of the needle
carrying arm and its peculiar connection with the main shaft, as the other features
are shown and claimed in another application bearing even date herewith.
In the several views, 1 is a round base supporting the bearings 2, in which the
main shaft is journalled. Extending horizontally from the base is the bearing 4, in
the outer end of which is secured the rod 5, which is parallel with the main shaft
but in a lower plane. For convenience of construction the rod 5 is secured in
position by the set screw 6, but the parts may be made in one casting if so
preferred.
Pivoted upon the shaft 5, by conical screws 7, 7 and jamb nuts 8, 8, is a yoke 9,
having a slotted upward projection 10, to which is attached an eccentric rod 11, by
means of a stud 12, and nut 13. This eccentric rod with its strap 14 embraces a
feed eccentric upon the main shaft, for the purpose of vibrating backward and
forward the feed yoke 9.
The feed eccentric in the present instance is fastened to the main shaft by an
extended collar 15 and screw 16, but numerous modifications of such attachment
will readily occur to a skilled mechanic. The feed yoke 9, carries another shaft 17
parallel to and above shaft 5. Spanning this said shaft 17 is a needle carrying
arm 18, pivoted by conical screws 19, and jamb nuts 20, to the shaft 17. This
needle carrying arm extends forward nearly to the line of the main shaft where it
takes a downward turn and terminates in two forks 37 and 38 which partially
embrace an eccentric 24, on the main shaft, placed side by side with the feed
eccentric above described. These two eccentrics may be made separately or in
one piece. At a point on said needle carrying arm slightly back of the main
shaft 3, is an outwardly projecting L-shaped piece 25, to which the needle 26 is
fastened in any suitable manner. A spur or false needle 39 is secured back of the
sewing needle in any suitable way to the needle carrying arm. This false needle
entering the cloth takes the strain off the needle by helping to advance the cloth.
The cloth plate 27 is fastened to the forward end of the main shaft 3, and attached
to said cloth plate is a bracket 28, supporting a flat leafed pressure spring 29.
The loop forming mechanism can be either such as is here shown at 30, or of any
other form that may be preferred, as this forms no part of my invention. The
ension 31 may be of any desired construction, as it does not constitute any part of
my invention. The spool 32 may be set on a spindle 33 on the rear bearing 2, of
Γ

page_text: the main shaft 3, and to avoid snapping the thread it is led up through the
perforated L shaped standard 34, on the same bearing. After passing the
tension 31, the thread passes to the needle 26, through a perforation in the stud 21,
and the needle fastening. At the rear end of the main shaft 3, is a balance
wheel 35 provided with a groove 36 to receive the driving belt.
The construction above described may be varied at will and is here shown
merely to illustrate a complete machine, and forms no part of my invention. By
merely sliding the stud up and down in the slotted projection 10, the length of the
stitch may be regulated at will. The slot may be omitted, but then only one
length of stitch would be possible. The needle carrying arm can be laterally
adjusted in several ways. By loosening the screw 6, the shaft 5, can be moved
laterally in its socket, carrying with it the needle carrying arm yoke and the
needle carrying arm; or the yoke itself can be laterally adjusted on the rod 5, by
means of the screws 7, as will be readily understood; or the outer end of the
needle carrying arm can be laterally adjusted on the rod 17, by means of the
screws 20, and in each instance effect the lateral adjustment of the needle carrying
arm and the needle attached thereto in relation to the end of the driving shaft. In
operation the eccentric 24 transmits motion to the needle carrying arm, and raises
and lowers the needle. The feed eccentric transmits motion to the slotted
projection on the yoke by means of the eccentric rod, to which yoke said needle
arm is pivoted by conical screws.
Since the feed eccentric is set diametrically opposite to the eccentric 24, the
following order of action takes place :-The action of the large eccentric 24 draws
the needle down through the cloth, and while the needle is still in the cloth, the
action of the small eccentric draws the cloth forward. The action of the large
eccentric now raises the needle and while raised the action of the small eccentric
moves the needle back into position for the next stitch.
The machine is almost indestructible, but if injured is quickly repaired in any
ordinary machine shop without special tools.
It is compact and cheap, with direct action, and extraordinary speed. All
bearings needing cil can be easily protected by oil guards so that the operator
will not injure his fabric. Since the feed operates while the needle is thrust
through both pieces of cloth, both upper and lower pieces will be advanced evenly
and together.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:―
1. In a sewing machine, a shaft having an eccentric, a needle carrying arm
which extends at an angle to the shaft, the inner end of the arm having a slot
in which the eccentric revolves, a feeding mechanism connected with the opposite
end of the arm for moving it horizontally, and a needle, substantially as described.
2. In a sewing machine, the combination of the base, having driving shaft
bearings, a support extending therefrom at right angles to the said bearings, a
needle carrying arm pivotally connected at its outer end to the said support,
the driving shaft, a needle arm reciprocating mechanism connecting the shaft
and the inner end of the said arm, a feeding mechanism connecting the shaft
and the outer end of the said arm, and a needle, substantially as described.
3. In an organized sewing machine, the combination of a driving shaft, a feed
eccentric upon said shaft, an eccentric rod, one end of which embraces said
eccentric, the other end being secured to a vibrating yoke suitably pivoted, a
shaft suitably mounted upon said yoke, a needle carrying arm spanning and pivoted
upon said last shaft, the forward end of said needle carrying arm having a slot
which partially embraces an eccentric upon the driving shaft, and a needle,
substantially as set forth.
4. In an organized sewing machine, the combination of a driving shaft, an

page_text: eccentric upon said shaft, a needle carrying arm having a slot in its forward end
to partially embrace said eccentric, and its rear end spanning and being pivoted
to a rigid shaft, a vibrating yoke carrying said rigid shaft, suitable feed mechanism
connected with the above described stitching mechanism and a needle, substantially
5 as set forth.
D
1
101 1
C T
1001
C. M. HINE,
By L. W., per F. B.