Improvements in or relating to Oscillating Treadles.
Year: 1897

page_text: Date of Application, 9th Aug., 1897
Complete Specification Left, 7th May, 1898-Accepted, 2nd July,
1898
PROVISIONAL SPECIFICATION.
Improvements in or relating to Oscillating Treadles.
I, PER PERSSON, of Stockholm, in the Kingdom of Sweden, Machine Designer,
do hereby declare the nature of this invention to be as follows:-
The treadle forming the object of this invention is chiefly intended for use on
sewing-machines though applicable for other purposes as well. It differs from
those heretofore used in that the feet are allowed to act in different ways the treadle
on one side being depressed by the forward part of the foot while the hind part
or heel of the same foot rests on a support located outside the axis of oscillation
of the treadle; at the opposite side the treadle is depressed by the
heel of the other foot while the forward portion of the same foot rests
on another support likewise located outside the axis of oscillation of the
treadle. Moreover, the parts in question may be readily reversed so
admit of changing the motion of the foot so that, after depressing the treadle alter-
nately with the forward part of one say the right foot and the heel part of the
left foot, the working of the treadle may be varied so as to be effected with the
heel of the right foot and the forward part of the left foot. By this construction
of treadle-mechanism the forward and heel parts of the feet may be allowed to
work and rest alternately and the working of the treadle is thus made less
fatiguing.
as to
In carrying out the invention between the side-frames of usual construction
there is arranged the usual fixed cross-bar as well as a rocking shaft, the latter
being provided with an arm which is connected by means of a pitman to the crank
or crank-disc of the machine. Two treadle plates or foot rests are supported over
the shaft. One of these plates is supported or pivotted at the front on an arm
projecting from the cross shaft and so attached by means of pins and eyes, or other-
wise, to the plate that the latter is free to oscillate. At its rear end the plate rests
on an arm projecting from the driving shaft. The plate may either rest loosely
on the arm which is preferably provided with a roller or it may have eyes and a pin
be inserted through the latter and the arm. The other plate on the other hand is
supported at the back by an arm similar to the supporting arm described and rests
at the front on an arm similar to the operating arm described which also projects
from the driving shaft. The treadle is worked so that on placing one foot on each
plate the operator first depresses say the right hand plate with the forward part
of his right foot, causing its operating arm to move downward and subsequently
the left hand plate with the heel of his left foot the operating arm of the right
hand treadle being thus made to ascend and the operating arm of the left hand
treadle to descend.
The relative positions of the plates are thus slightly changed in the working
of the treadle; as however the plates move up and down together one treadle
only has been referred to though the plates may be said to constitute two distinct
treadles.
In order to admit of a reversal of the motion, as mentioned above, the supporting

page_text: arms may be made removable from the cross shaft. By detaching the arms and
turning them in the opposite direction and by swinging or partly rotating the
operating arms round the shaft and turning the treadle endwise, the feet are
allowed to act in the reverse manner to what has been mentioned before, that is,
the depression will be performed by means of the heel part of the right foot and the
forward part of the left foot. To allow of this reversal the operating arms are
fulcrumed on the driving shaft their extent of rotation being limited by means of
a pin sliding in a slot in the hub or by other means in order to cause them to
occupy the proper angle in both positions.
It is not necessary to use whole or single treadle plates since the supporting arms
may be provided with special plates to place the heel or forward parts of the foot
on, while the feet are allowed to act on separate plates likewise attached to the
operating arms. The supports may also be arranged in different manners, for
instance they may project upwards directly from the base-plate when the machine
is provided with a base plate when perhaps the cross bar is omitted. The operating
arms may also be made to project say at right angles from an arm or bar situated
between the plates on the driving shaft and below the treadle plate, and for the
purpose of reversing they may be made reversible or revoluble in a plane parallel
to the driving shaft so as to allow of their being placed under either the right or
left foot plate. The chief features of the invention therefore are the said supports,
being made independent of the treadle shaft and placed at some distance from said
shaft and supporting the treadle which obtains additional support from arms pro-
jecting from the shaft.
BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to Oscillating Treadles.
I, PER PERSSON, of Stockholm, in the Kingdom of Sweden, Machine Designer,
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 follow-
ing statement:-
The treadle forming the object of this invention is chiefly intended for use on
sewing-machines though applicable to other purposes as well. It differs from
those heretofore used in that the feet are allowed to act in a different way, the treadle
on one side being depressed by the forward part of the foot while the hind part
or heel of the same foot rests on a support located outside the axis of oscillation
of the treadle; at the opposite side the treadle is depressed by the
heel of the other foot while the forward portion of the same foot rests
on another support likewise located outside the axis of oscillation of the
treadle. Moreover, the parts in question may be readily reversed so
admit of changing the motion of the foot so that, after depressing the treadle alter-
nately with the forward part of one say the right foot and the heel part of the
left foot, the working of the treadle may be varied so as to be effected with the
heel of the right foot and the forward part of the left foot. By this construction
of treadle mechanism the forward and heel parts of the feet may be allowed to
work and rest alternately and the working of the treadle is thus made less
fatiguing.
as to
In the annexed drawing the treadle is shown, applied to a sewing machine, in
front elevation in Fig. 1 and in plan in Fig. 2, Figs. 3 and 4 show respectively

page_text: cations.
или нали вссиона он не пие х- y or Fig. 2.
Figs. 0 to 12 are modin-
In carrying out the invention between the side frames a, a there is arranged the
usual fixed cross bar b as well as a rocking shaft c the latter being provided with
an arm d which is connected by means of a pitman to the crank or crank disc of
the machine. Two treadle-plates or foot rests f and 9 are supported over the
shaft c.
One of these plates f is supported or pivotted at the front on an arm h
projecting from the bar 6 and so attached by means of pins and eyes, or otherwise
to the plate that the latter is free to oscillate. At its rear end the plate rests
on an arm k projecting from the shaft c. The plate may either rest loosely on the
arm, which is preferably provided with a roller k¹ or it may have eyes and a pin
be inserted through the latter and the arm. The other plate g on the other hand
is supported at the back by an arm h¹, similar to the arm h, and rests at the front
on an arm ² similar to the arm k which also projects from the shaft c. The treadle
is worked so that on placing one foot on each plate the operator first depresses say
the right hand plate g with the forward part of his right foot, causing its arm
to move downward and subsequently the left hand plate f with the heel part of
his left foot, the arm 2 of the right hand treadle being thus made to ascend and
the arm k of the left hand treadle to descend.
The relative positions of the plates are thus slightly changed in the working
of the treadle; as, however, the plates move up and down together one treadle
only has been referred to though the plates may be said to constitute two distinct
treadles.
In order to admit of a reversal of the motion, as mentioned above, the arms h
and h¹ may be made removable from the bar b, as shown in the drawing. By
detaching the arms h and h¹ and turning them in the opposite direction and by
swinging or partly rotating the arms and 2 round the shaft and turning the
treadle endwise they may be reversed so that the feet act in the opposite direction
to that described that is to say, the depression of the treadle will be performed by
means of the heel part of the right foot and the forward part of the left foot. To
allow of such reversal the arms k k are fulcrumed on the shaft c, the extent of
rotation being limited by means of pins studs or the like c on the shaft and slots
in the hubs of the arms, or instead of slots or shoulders, studs or the like on the
arms or by other means in order to cause them to occupy the proper angle in both
positions.
It is not necessary to use whole or single treadle plates, since the arms h h¹ may
be provided with special plates to place the heel and forward parts of the foot upon,
the feet are allowed to act on separate plates attached to the arms k, 2. The
supports h, h may also be arranged in different manners, for intance they may pro-
ject upwards directly from the base plate, when the machine is provided with a base
plate, when perhaps the cross bar is omitted. The arms k, 2 may also be made to
project say at right angles from an arm or bar m, situated between the plates on the
shaft c and below the treadle plate and for the purpose of reversing they may be
made reversible or revoluble in a plane parallel to the shaft c, so as to allow of their
being placed under plate for plate g (see Fig. 5) where the reversible supports are
also shown, being designated by n, n¹. The chief features of the invention, therefore,
are the said supports being made independent of the treadle shaft and placed at
some distance from said shaft and supporting the treadle which obtains additional
support from arms projecting from the shaft.
Figs. 6, 7 and 8 show the arm & connected to the treadle plate by means of a
bent spring n², said plate being provided with lugs n³ having a series of holes for
at pin, on which rests the arm h. By this means various inclinations may be given
to the treadle plate. According to Figs. 9 to 12 the arm is directly articulated
to the plate, to which the arm is connected by means of a link h³, permitting
the plate to move longitudinally as much as required, while the plate swings
together with the arm k³.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. Oscillating treadles, which are so arranged that the feet move in different
ways the forward end of one treadle plate and the rear end of the other treadle
platė resting on supports, located at a distance from the driving shaft, the treadle
plates being also supported by arms, projecting in opposite directions from the
driving shaft, so that the forward end of one treadle may be depressed with the
one foot and the rear end of the other treadle with the other foot, substantially
as described.
2. In treadles of the character described the arrangement of reversible supports
and arms so that the motion of the feet, may be changed substantially as described.
3. In treadles of the character described the use of a separate treadle plate or
foot rest on each support or arm instead of treadle plates in one piece substantially
as described.
4. In treadles of the character described the arrangement that the arms k, k³
do not project directly from the driving shaft, but are articulated and form angles
with arms projecting from the driving shaft, substantially as described.
5. In treadles of the character described the arrangement that the arms can be
swung on the driving shaft to the extent required for reversal and kept in position
by pins studs or the like projecting from the driving shaft and acting on
shoulders, studs or the like on the arms, substantially as described.
6. In treadles of the character described the arrangement of fixed supports
consisting of arms h, h¹ projecting from a fixed part b of the machine frame and on
which the treadle plates are movably mounted, the arms being connected to the
fixed part in such manner that they may easily be removed and again fixed
to it after being moved into an opposite position to that in which they were before
removal, in order that the motion of the feet may be changed substantially as
described.
7. In treadles of the character described the arrangement of the treadle plate
connected to its support or arm in such manner that it is pivotally connected to
the fixed arm and can move with the other, for instance by resting on a roller on
the last mentioned part substantially as shown and described in Figures 3 and 4
of the accompanying drawings.
8. In treadles of the character described the arrangement of a spring (Fig. 7)
or connecting link (Fig. 9) connecting the treadle plate to its arm or support so that
the treadle plate becomes slightly movable in a longitudinal direction substantially
as described.
9. The combination and arrangement of parts constituting the complete treadle
mechanism substantially as described and illustrated in Figures 1, 2, 3 and 4 of
the accompanying drawings.