Improvements in Boot Sole Sewing Machines.
Year: 1895

page_text: Date of Application, 16th Oct., 1895
Complete Specification Left, 16th July, 1896-Accepted, 22nd Aug., 1896
PROVISIONAL SPECIFICATION.
[Communicated from abroad by CLAUDE CLERC, of 182 Boulevard de la
Villette, Paris.]
Improvements in Boot Sole Sewing Machines.
FREDERICK JAMES RAMM 3 Tillington Terrace Stafford Accountant do
hereby declare the nature of this invention to be as follows:-
This invention has reference to improvements adapted principally to the Blake
sole sewing machine, but may be adapted to other sewing machines.
In altering the length of the stitch on these machines it has hitherto been
necessary to remove the feed cam on its shaft which deranges the machine; whilst
the revolving horn of the machine has hitherto been heated by gas running
through joints which were made "gas tight" by the use of mercury or water
& oil.
My improvements consist :-
:-
In adding an adjustable lever to the rocking frame through which the motion
of the feed cam is communicated to the feed bar & by means of a slot & binding
screw at its upper extremity & a series of holes in its lower extremity and a
movable pivot pin I connect it to the link which actuates the feed bar & thus
regulate the movement of the propeller according to the length of stitch it is
desired to make without altering the pition of the feed cam.
On the stem of the revolving born of the machine i mount collar which is
turned to the taper of the stem and has an annular groove cut on its inner surface,
an ordinary gas cock is screwed into the outside of the collar and communicates
with the annular groove, a hole is now drilled vertically from the upper edge of
the horn stem and opens into the annular groove of the collar. The collar is held
in position on two or more studs set in the frame of the machine with spiral
springs and nuts and thus forms a flexible bearing which adjusts itself auto-
matically to take up wear as it occurs, and always maintains a perfectly air tight
joint. The gas passes through the gas cock into the annular groove of the collar
and upwards through the vertical hole in the horn stein and thence through a
tube or tubes into the interior of the horn to the parts to be heated.
Dated this 14th day of October 1895.
I, FREDERICK JAMES RAMM 3 Tillington Terrace, Stafford in the County of
Stafford, Accountant 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 :-
The object of this invention is first of all to provide a ready means of varying
the length of the stitch and further relates to an improved mode of conducting gas
into the horn of boot sole sewing machines.

page_text: Heretofore it has been usual when the operator required to modify the length of
stitch for him to displace the feed cam on its axis. This displacement has
generally the effect of modifying more or less the proper working of the machine
and necessitates the readjustment of the machine before it will again do
satisfactory work. To obviate this, which is the object of part of my invention,
I connect the feed lever with a secondary lever by a binding crew and by altering
the position of the secondary lever and its accompanying link, the operator is able
to regulate the length of the stitch at will.
On the stem of the revolving horn of the machine mount a collar which is
turned to fit the taper of the stem and has an annular groove cut in its inner
surface.
This collar has two or more lugs bored to fit two or more stuls which are
screwed into the frame of the machine, which collar is kept in position by a spiral
spring encircling each stud below the lug and pressing it upwards against the stem,
the lower end of such spiral spring resting on a washer which can be set up and
down the stud by a small set screw to increase or relax the tension of the spring
and thus forms a flexible cone bearing which adjusts itself automatically to take
up wear as it occurs and always maintains a gas-tight joint. An ordinary gas
cuck is screwel into the outside of the collar and communicates with the annular
groove which allows the gas to flow into the horn through a suitably placed
conduit one end opening into the annular groove and the other connected to one
or more gas burners placed in the interior of the horn in the usual manner.
In the accompanying drawings I have shown my improvements embodiel in
so much of a sole sewing machine as is necessary to illustrate their as
Fig. 1 is a front view showing the feeding mechanism.
Fig. 2 is a side view of same showing the feed lever with the secundary lever.
Fig. 3 is a front view of the horn.
"a" (Fig. 1) is the framing or platform of the machine which carries the
bearings ", " for the feel lever c. with two branches 12. One of these
branches el carries at its extreme end an anti-friction roller and stul ""
working in the groove of the revolving feed came." and through this branch el
motion is communicated to lever c.
The second brauche 2 of the lever c is connected about its centre by the binding
screw "" to a secondary lever "/ "which oscillates with the main lever in
the bearings "b. b.”
"
This binding screw "/1 binds the lever "" to the lever c through a slotted
hole "72" in lever "" The branch "2" of the lever c is otherwise connected
at its upper extremity by means of a spiral spring attachment "c3" "c3" to a
fixed point of the machine.
The lower extremity of the lever "" is pierced with several holes "/3" in
some one of which can be fixed a pin "g." which connects this lever "" to a
link which in turn is connected to a pin "41" which is rigidly attached to
the feed bar "k" which feed bar "k" is drawn forward in the direction of the
stitch against the controlling action of a spiral spring attachment "." [1," fixed
on to the frame of the machine.
"
"
The plate "" in which is a slot "" which guides the pin "" is fixed by
means of screws on the presser bar "m" carrying the presser foot "m" which
holds in position the work to be sewn on the horn "n."
The needle "v und
needle bar "U" are like similar parts in other machines.
In using my invention the boot to be sewn is placed on the horn "a" and the
presser fout"
presses on the seam to maintain it in place when the needle "o
descen is to make the stitch. When the stitch is completed the presser foot "m
"
1
rises gently and the feed cam acts on the levere by the intermediary of the
antitriction roller "d" which causes the branch 2 conjoined with the secondary
lever to oscillate with it.
pin
זי
" "
"
The lever "" acts on a connecting link "" through the pivot pin "g" and the
"" descends in the slot "" in dragging the feed bar "k in an oblique
"

page_text: movement in its descent. This movement has for effect firstly to press the
point ""on the seam of the boot and secondly to feed the sam forward equal to
the length of a stitch.
When the lever "f" returns to its first position the feed bar "&" is brought
back into its corresponding position by reason of this movement combined with
that of the opposing springs "1"
In the drawing the connecting link "" is represented at its highest position
in "3" that is to say the pivot pin "" is placed in the top hole "3" of the
lever It will be sem that if we place the pin "" in any one of the other
holes 3" we make the link ""travel further and consequently the feel
bar and the work will be carried forward a greater distance which will
increase the length of the stitch until the maximum length of stitch is reached by
placing the pin "g" is the lowest hole "/3" of the lever ""
"
1
As it is desirable that the operator should be able to put the feel point "k"
and presser point "m" into the position most familiar to him the presser
foot" is maintained on its bir "3" by a screw "m" in slotted hole in it the
loosening of which "m" permits the removal and regulation of the presser
point but with such loosening the plate "i" falls.
The position of the slot "" being thus changed the distance between the
centres of pin "1" and each of the holes "/3" is modified and it is to correct
this that make the slotted hole "" in the lever "" where it is connected t
the branch by the binding screw "1" in such fashion that this lever can
when the binding screw "1" is loosened take of itself a position resulting from
the positions given to the points "ki" and "m." It will be understood that the
number of holes "3" can be varied as required according to the nature of the
work to be done.
On the stem "A" (Fig. 3) of the revolving horn N of a boot sole sewing
machine mount a collar B which is turned internally to the taper of the stem A
and has an annular groove C cut in its internal surface. The collar B has two or
more lugs bored to slide freely on two or more studs D screwed into the frame of
the machine and is held in position by spiral springs D' encircling each stud below
the lug and pressing the collar upwards against the stem, the lower end of each
spiral spring resting on a washer D2 which can be set up and down the stud by a
small set screw to increase or relax the tension of the spring, and thus forms a
flexible conical bearing which adjusts itself automatically to take up wear as it
occurs and always maintains a perfectly gas-tight joint.
It will be understood that any elastic material may be used to press the two
surfaces together to form the gas joint. An ordinary gas cock with suitable
connection for rubber or other gas tube is screwed into the collar B at "e"
communicating with the annular groove C. A hole "" is then drilled vertically
through the horn stem A with its lower end opening into the annular groove C of
the collar B, the gas passes through the gas cock into the annular groove of the
collar and upwards through the conduit "f" (Fig. 3) in the horn stem thence
through another tube or tubes into the interior of the horn N to the parts requiring
to be heated.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
(1) The arrangement for regulating the stitch above described applicable to
machines for sewing bout soles and the like and consisting essentially in a lever with
two branches oscillating in bearings disposed upon the platform of the machine and
of which one of the branches carries an antifriction roller which engages in the siot
of the feed eam, the other branch of which lever is controlled by the action of
opposing springs and is connected about its centre to a secondary lever by a
binding screw which operates through a slotted hole in the secondary lever which
again is pierced at its lower extremity with boles suitably disposed in one or other

page_text: of which fits the pivot pin of the connecting link which transmits the movement
to the feed bar & feed point substantially as set forth.
(2) The arrangement of the gas supply to the revolving horn of sole sewing
machines so as to automatically allow for wear & tear whilst still maintaining a
perfectly gas-tight joint by means of springs substantially as set forth.
Dated this 15th day of July 1896.
FREDERICK JAMES RAMM.