Year: 1898

page_text: Date of Application, 2nd Aug., 1898-Accepted, 15th Oct., 1898
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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:-
-
This invention relates to improvements in machines for sewing the soles of
boots or shoes to the welts thereof and refers to those parts of the machine for
feeding and guiding the work, having for its object means whereby a lateral ad-
justment of the work guide may be effected.
In order that the invention may be clearly understood and readily carried into
effect I will proceed to describe the same in connection with the accompanying
drawings, in which:
Figure 1 represents a side elevation showing portions of a sewing machine in-
cluding the work-support or channel-guide, the presser-foot, and the means for
adjusting the presser-foot in accordance with my invention.
Figure 2 represents a front elevation of the mechanism shown in Figure 1.
Figure 3 represents a section on line 3-3 of Figure 1.
Figure 4 represents an elevation taken from the side opposite that shown in
Figure 1.
.
Figure 5 represents a plan of the mechanism shown in Figures 1, 2, and 4.
Figure 6 represents a perspective view of the presser-foot and its supporting
lever, and the adjusting devices comprising my improvements.
Figure 7 represents a sectional view showing a portion of a boot or shoe in
the position it occupies while the outer sole and welt are being stitched together,
the presser-foot being shown in the position it occupies when a comparatively
narrow edge is being stitched.
Figure 8 represents a view similar to Figure 7, showing the presser-foot in the
position it occupies when a wider edge is being stitched.
Figure 9 represents a perspective view of one of the parts of my improved
presser-foot adjusting mechanism.
The same letters of reference indicate similar parts in all the figures.
i is a work-support, adapted to bear upon the outer surface of the outer sole s
of a welted boot or shoe, and.j is a work-guide or presser-foot, which is affixed
to a lever j, the latter being mounted to oscillate on a support hereinafter referred
to on the frame of the machine, so that the said work-guide alternately approaches
and recedes from the work-support i, said work-guide or presser-foot being
arranged to bear upon the upper surface of the welt w, as shown in Figures 1, 7,
and 8. The work-support i and work-guide jare relatively arranged and operated
so that the work-guide and work-support alternately grasp and release the work,

page_text: holding it in position while it is being penetrated by the awl and needle, during
the stitch-forming operation, the work being fed while the needle is retracted.
The machine is provided with suitable mechanism of known construction for effect-
ing these operations; and as my present improvement only concerns the means for
laterally adjusting the work-guide or presser-foot, to move the shoe so as to gauge
the distance which the stitch will occupy from the edge of the sole thereof, I do
not deem it necessary to describe the other mechanism.
In carrying out my present invention, instead of mounting the lever upon a
fixed stud or centre of rotation, I mount it upon a centre which is laterally movable,
and provide this centre with means whereby it may be moved to vary the position
of the work-guide or presser-foot with relation to the path of the needle, and thus
cause the upper-guiding edge of the work-guide to stand close to the path of the
needle, as shown in Figure 7, or at a considerable distance therefrom, as shown
in Figure 8. To this end, I employ as the stud or centre upon which the lever j
oscillates, an eccentric which is mounted to turn upon a fixed supporting stud
and is fitted in a socket formed for its reception in the lever . On the
eccentric is formed a rack-segment which is concentric with the stud 3, and
engages with a similar rack-segment j formed on a lever 7 which is mounted to
oscillate upon a fixed stud 18 and is provided with an operating handle .
It will be seen that a movement of the lever 77 in one direction will partially
rotate the eccentric and thus vary its lateral position, so that it will support the
lever, and consequently the presser-foot or work guide j, farther from or
nearer to the path of the needle, as the case may be; a rotation of the cam in
one direction causing the work-guide to move away from the path of the needle,
while a rotation of the cam in the opposite direction causes said work-guide to
move toward the path of the needle. It will also be seen that the described im-
provement enables the work-guide to be adjusted by means of the lever handle,
as described while the machine is in operation. The movements of the lever 7.
may be limited by adjusting stops 10 10 on the supporting frame.
I do not limit myself to the details of mechanism here shown for changing the
centre upon which the work-guide carrying lever oscillates, as said centre may be
changed by other equivalent means without departing from the spirit of my
invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is:-
:-
1. In a boot sewing machine a presser-foot or work-guide attached to a lever
oscillating upon a fulcrum which is laterally adjustable for the purpose specified.
2. In a boot sewing machine a presser-foot or work-guide attached to a lever
oscillating upon a laterally adjustable fulcrum, and operating in conjunction with
the work support, substantially as described and for the purpose specified.
3. The means for shifting the aforesaid adjustable fulcrum laterally substantially
as described.
4. A boot sewing machine having a laterally adjustable work-guide or presser-
foot constructed and operating in conjunction with the work support substantially
as described with reference to the accompanying drawings and for the purpose
specified.
בד
1
OI August 1898.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.