Improved Treadle Mechanism for Driving Sewing, Knitting, and other Machines.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
Improved Treadle Mechanism for Driving Sewing, Knitting, and
other Machines.
HERBERT AKROYD STUART Bletchley Iron Works, Bletchley in the County of
Buckinghamshire, Mechanical Engineer, do hereby declare the nature of this invention
to be as follows:-
This Invention refers to a new and improved treadle mechanism for communicating
rotary motion to Lathes and Sewing and other Machines which apparatus may be
applied to or detached from such machines as desired. The apparatus is arranged in
a very compact manner and may be so constructed as to form a stool or low ottoman
when not in use. A flat frame or box contains the treadle attached to a small axle
beneath it with which it oscillates.
The lid of the box is made hollow and in the cavity-which may be enclosed or open
but is better enclosed-is placed the fly wheel with a crank pin at a suitable distance
from the centre on which pin works a slotted lever the other end of the lever being
fixed to the treadle shaft which is jointed in such a manner as to allow of the lid which
is hinged to the frame or box-being turned down on it as a cover. The most natural
and convenient position for the lid and fly wheel when in use is at right angles to the
box and treadle where it may be fixed either by a hook or a spring, but it might if
required be arranged at any angle to the box.
When the treadle is operated an oscillating motion is communicated through the
shaft to the slotted lever and the slot acting on the crank pin causes the fly wheel to
revolve rapidly and a continuous rotary motion is conveyed to the handle or wheel of
the machine by a cord of leather or other suitable material.
Dated 19th day of April 1888.
HERBERT AKROYD STUART.

page_text: COMPLETE SPECIFICATION.
Improved Treadle Mechanism for Driving Sewing, Knitting, and
other Machines.
I, HERBERT AKROYD STUART, of Bletchley Iron Works, Bletchley, in the county of
Buckingham, Mechanical Engineer, 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 improved mechanism for converting the oscillating motion
of a treadle into rotary motion, for driving, sewing, knitting and other machines,
and has for its chief object to provide treadle mechanism which can be readily applied
and removed.
The apparatus is arranged in a frame or box which can be so constructed as, when
the apparatus not in use, to form a stool or low ottoman.
In the accompanying drawing
Figure 1 is an elevation of the box or frame of the apparatus, and,
Figure 2 is a section of the same.
Figure 3 is a view similar to Figure 2, but showing the box opened..
Figure 4 is a section on the line e, a Figure 3.
Figures 5 and 6 are views illustrating details.
a is the frame or box, and is the lid thereof. c is the treadle which is secured to
the axle or rock-shaft d and carried in suitable bearings in the box a, the said shaft
at one end being formed with a slot e as shown in Figure 6, for a purpose hereinafter
described.
fis a fly wheel and driving pulley which is mounted on a pin secured to the lid b
and g is a crank pin on the said wheel.
is a lever having formed at one end a slot i working on the pin g. The other
end of the said lover is shaped as shown in Figures 2 and 5 to enter the slot e in the
rock-shaft as shown in Figure 3.
During the time that the apparatus is not required for use the box is closed as
shown in Figures 1 and 2. When, however, the apparatus is to be used the box is
opened, the rock-shaft d being so placed that the slot e is in a proper position to
receive the end of the lever h, as shown in Figure 5. When the rock-shaft and lever
are thus engaged the movement of the treadle by the feet will cause the oscillation
of the lever and the consequent rotation of the wheel fin a well known manner.
The lever has near the end ja segmental slot k through which passes a headed
screw or stud which screw or stud serves to prevent the said lever from falling out
of place when it is disconnected from the rock-shaft. The motion of the driving wheel
can be transmitted through a leather cord, hand or other device.
Hooks, bolts or other convenient means may be employed for holding the lid in its
open position while the apparatus is in use.

page_text: 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 1
claim is
(1) The improved treadle mechanism comprising a box containing a treadle mounted
on a suitable axis, and a lid carrying a fly wheel and a slotted bar engaging with a
crank pin on the said wheel, the said slotted bar being adapted when the lid is raised
to engage with the rock-shaft, substantially as described.
(2) The manufacture and use of the improved treadle mechanism hereinbefore
described and illustrated in the accompanying drawing.
قيم
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.