Year: 1887

page_text: Date of Application, 23rd June, 1887
Complete Left, 23rd Mar., 1888
Complete Accepted, 27th Apr., 1888
I, WILLIAM JONES, of the firm of Jones and Company, of Guide Bridge, near
Manchester in the County of Lancaster, Sewing Machine Manufacturers do hereby
declare the nature of this invention to be as follows:-
My invention refers to improved means as hereafter described for imparting motion
to the presser foot bar and also for regulating the length of movement or vibration
thereof, and stopping the same.
For the above purposes I mount by preference on the top of the head of the sewing
machine a double ended lever or crank in suitable bearings. Through one end of such
lever is passed the top end of the presser foot bar, and the other end of such lever is
engaged with a tappet or cam on the needle shaft, from which the required motion is
derived and transmitted through the double ended lever or crank for imparting the
required vibration or motion to the presser foot bar. The outer end of the presser
foot bar has provided thereon an adjustable nut, screw, or collar, the position of which
can be readily varied with regard to the end of the lever or crank, and by such
variation the length of the movement or vibration of the presser foot bar can be
regulated whilst the machine is working, or such movement can be stopped
entirely.
J. W. HARDING,
Agent for the Applicant.

page_text: I, WILLIAM JONES of the firm of Jones and Company of Guide Bridge, near
Manchester in the County of Lancaster, Sewing Machine Manufacturers, 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 refers to improved means as hereafter described for imparting motion
to the presser foot bar and also for regulating the length of movement or vibration
thereof, and stopping the same.
In the accompanying drawings Fig. 1 is a side elevation, Fig. 2 a front elevation
and Fig. 3 a plan looking at the top of a sewing machine head with my improvements
applied.
A represents the front part of the head and for the above purposes I mount
by preference on the top thereof a double ended lover or crank B in suitable
bearings C.
Through one end D) of such lever or crank B is passed the top end of the presser
foot bar E, and the other end D₁ of such lever is engaged with a tappet or cam F on
the needle shaft G, from which the required motion is derived and transmitted through
the double ended lever or crank B for imparting the required vibration or motion
to the presser foot bar E. The upper end E' of the presser foot bar has provided thereon
an adjustable nut H, the position of which can be readily varied up or down, and by
such variation the motion or vibration of the presser foot bar E can be regulated
whilst the machine is working, or such movement can be stopped entirely; and in
order to effect this end I provide a small spring buffer J which raises the end D of
the lever B as the nut H is relieved from it, so that by unscrewing such nut the
double ended lever B can be withdrawn from the tappet or cam F on the needle
shaft G and so arrest the movement of the presser foot bar E, or by adjusting the
nut H downwards thereon, the end D¹ of the double ended lever or crank B may be
brought in gear to any required extent, and so regulate the amount of motion or
vibration of the presser foot bar E.
When the vibration or motion of the presser foot bar E is required to be the same
and continuous, I employ a fixed collar or projecting piece instead of the adjustablo
nut H. When the collar or projecting piece is employed, the spring buffer J may also
be dispensed with.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
The application of double ended lever or crank B, in combination with tappet or
cam F on the needle shaft G, and parts connected therewith for giving the required
motion or vibration to the presser foot bar E, arranged and operating substantially as
herein set forth.
Dated this 23rd day of March 1888.
J. W. HARDING,
Agent for the Applicant.