Sewing Machines, and other such like Mechanism.
Year: 1885

page_text: Sewing Machines, and other such like Mechanism.
I, WILLIAM HENRY BECK, of 115 Cannon Street, in the City of London,
Consulting Engineer and Patent Agent do hereby declare the nature of the said
invention for "NEW OR IMPROVED LEVER PEDALS FOR DRIVING MACHINE TOOLS,
SEWING MACHINES, AND OTHER SUCH LIKE MECHANISM" to be as follows:-
The special feature of this invention consists in a suspended lever pedal which
can be placed close to the crank shaft it is intended to turn, whereby the table of
the machine can be approached closely with the greatest ease, and the pedal or
pedals can be actuated by a person whether standing up or seated.
The Drawings hereto annexed illustrate these suspended lever pedals applied in
various ways.
Figure 1 shows a lever a with a pedal b at its lower end, the said lever a being
suspended and oscillating at c. The lever has a kind of arm f, cast or otherwise
formed with it, projecting beyond the shaft to be turned. To the point g is
jointed a connecting rod h which takes on to the crank k of the shaft .
When two pedals are employed the dead points may be avoided by taking care
not to place the two cranks diametrically opposite to one another but to place them
at a slight angle so as not to interfere appreciably with the symmetrical movement
of the feet which operate the pedals.
This arrangement of the pedals gives an exceedingly easy and smooth action,
transforming the nearly horizontal to and fro movements of the feet into continuous
rotary motion of the cranks on the shaft x. This shaft which carries a flywheel,
transmits, by a cord or strap, or other suitable means, the required motion to the
working parts of the machine, as for example to the saws of a fret cutting machine,
the needles of sewing or embroidering machines, the spindle of a lathe, and
generally to any machine susceptible of being operated by the feet.
Figure 2 shows a modification in which the suspended lever a, furnished with its
pedal b, is connected directly to the crank k of the shaft x, the crank pin moving
in a slot m made for that purpose. In this case the oscillations of the lever a
are transformed directly into a continuous rotary motion of the crank k of the
shaft x

page_text: The modification shown in Figure 3 consists in placing the arm fat the point of
suspension c of the lever a. As in Figure 1 the arm f transforms the oscillations of
the lever a into a continuous rotary motion of the shaft x by means of the
connecting rod h and crank k.
Figure 4 shows how, still following the same principle, (which consists in
preserving the smallest possible distance between the shaft x and the pedal lever a)
the pedal lever can be connected directly to the crank k. In this case the upper
end a of the lever a slides on its point of attachment c, and the pedal follows the
up and down movements of the crank k by passing through a curvilinear path.
The attachment c carries a friction roller which revolves loosely on its axis.
Figure 5 shows a modification of Figure 4 in which the upper end of the lever a
slides in a socket n mounted loosely on the axis of suspension c.
The shaft x may be furnished with one or two pedal levers the cranks being
placed at right angles or in a line with each other or at other suitable intermediate
angles.

page_text: Sewing Machines, and other such like Mechanism.
I, WILLIAM HENRY BECK of 115 Cannon Street, in the City of London,.
Consulting Engineer and Patent Agent 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, reference being had
to the accompanying sheet of Drawings and to the letters and figures marked
thereon:-
The special feature of this invention consists in a suspended lever pedal which
can be placed close to the crank shaft it is intended to turn, whereby the table of
the machine can be approached closely with the greatest ease so as to facilitate
inspection of the work being done, and the pedal or pedals can be actuated by a
person whether standing up or seated.
The drawings hereto annexed illustrate these suspended lever pedals applied to a
fret cutting machine Figure 1 being an elevation, and Figure 2 a side view of such
machine.
The levers a, a¹, furnished with pedals b, b¹, at their lower ends, are suspended
and oscillate on a cross piece c which may serve at the same time as a distance piece
for the two side frames d, d¹ which compose the stand of the machine. These
levers have each a kind of arm f, cast, or otherwise formed with it and projecting
beyond the shaft x to be turned. To the points g are jointed connecting rods h
which take on to the cranks k of the shaft x.
When two pedals are employed, as illustrated in the drawings, the dead points
may be avoided by taking care not to place the two cranks diametrically opposite
to one another, but to place them at a slight angle so as not to interfere appreciably
with the symmetrical movement of the feet which operate the pedals.
This arrangement of the lever pedals gives an exceedingly easy and smooth
action, transforming the nearly horizontal to and fro movements of the feet into
oscillations of the suspended levers, and these oscillations into continuous rotary
motion of the cranks of the shaft x. This shaft, which carries a flywheel v,
transmits by a cord or strap m or other suitable means the required motion to the
working parts of the machine as for example to the saws of the fret cutting
machine, the needle of a sewing or embroidering machine, the spindle of a lathe or
generally to any machine susceptible of being operated by the feet.
Figure 3 shows a modification of the lever pedals which consists in placing the
arm f at the point of suspension c of the lever a.. As in Figure 1 the arm f
transforms the oscillation of the lever a into a continuous rotary motion of the
shaft x, by means of the connecting rod h and crank k.
Figure 4 shows a modification in which the suspended lever a, furnished with its
pedal b, is connected directly to the crank k of the shaft x, the crank pin moving
in a slot m' one side of which is formed by the cap m². In this case the
oscillations of the lever a are transformed directly into a continuous rotary motion
of the crank k of the shaft x.

page_text: Figure 5 shows how, still following the principle above described (which consists
in preserving the smallest possible distance between the shaft and the pedal
lever a) the pedal lever can be connected directly to the crank k. In this case the
upper end of the lever a slides on its point of attachment c, and the pedal follows
the up and down movements of the crank k by passing through a curvilinear path.
The attachment c carries a friction roller which revolves loosely on its axis.
Figure 6 shows a modification of Figure 5 in which the upper end of the lever a
slides in a socket n mounted loosely on the axis of suspension c.
In the arrangement shown in Figure 7, the connection of the lever a with the
crank remains the same as in Figure 6, but the upper part is connected to an
arm z pivoting on the axis c. In this arrangement the pedal 6 describes, an
elliptic path.
In the arrangement shown in Figure 8, the pedal b describes'a circular path, the
arm z, in Figure 7, being replaced by a crank plate s¹ which turns on its axis c in
the same time as the crank shaft by means of the pinions y y' keyed on the
shafts c.and x and driven the one from the other by means of the pitch chain y³
represented by the dotted lines in Figure 8.
.
As above described, one or two lever pedals may be applied to the same crank
shaft, the cranks being, in the latter case, placed or fixed on the shaft at right
angles, in a right line or nearly in a right line with regard to each other.
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:-
The arrangement of the lever a suspended by its upper end, furnished with a
pedal b at its lower end, and connected to the crank of the shaft which it is
required to turn, either by means of the arm f cast or otherwise formed with, or
connected to, the lever a, and of the connecting rods h as illustrated in Figures 1,2
and 3, directly by the crank pin taking into a slot or slide formed in the lever a
as illustrated in Figure 4, directly by the crank pin taking into a bearing in the
lever a the upper end of the said lever being allowed to slide on its point of
attachment c as in Figure 5, or in a socket mounted loosely on the point of
attachment c as in Figure 6; or directly as illustrated in Figures 7 and 8, and as
herein before described.
1
1000