Improvements in Stitch Separating and Indenting Machines for Use in the Manufacture of Boots. and 'Shoes.
Year: 1895

page_text: Date of 'Application, 23rd July, 1895-Accepted, 12th Oct., .1895
COMPLETE
[Communicated from abroad by GOODYEAR SHOE MACHINERY CO., a
corporation organized under the Laws of the State of Maine, and having.
its headquarters at Portland, in the County of Cumberland and State of
Maine, United States of America, Manufacturers.]
"
Improvements in Stitch Separating and Indenting Machines for Use
in the Manufacture of Boots. and 'Shoes.
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
stateinent :-
My invention relates to "stitch separating and indenting machines," and is an
improvement upon the invention described in the Specification of a former
Application dated April 23rd, 1895 No. 8057 and it consists in certain novel
features of construction, arrangement and combination of parts which will be
readily understood by reference to the description and to the accompanying
drawings in which+
Figure 1 of the drawings is a plan of a machine embodying my invention. i
Figure 2 is a front elevation.
Figure 3 is a side elevation looking towards the left of Figures 1 and 2.
..:
Figure 4 is a vertical section on line 2, 2 on Figure 1 and showing the parts at
the left of said line in elevation.
Figure 5 is a partial horizontal section on line 3, 3, on Figure 4.
Figure 6 is a development, on a flat plane, of the periphery of the cam for
operating the feed lever.
3.
Figures 7, 8 and 9 are respectively a plan, a side elevation and an..end view of
the feed slide.
Figures 10, 11 and 12 are respectively a plan, a front elevation and a side
elevation of the tool stock.
Figures 13, 14 and 15 are respectively a plan, a side elevation and a front view
of the tool stock carrying lever.
Figures 16 and 17 are respectively a front elevation and a side elevation of the
contact plate secured to the front end of the presser lever, and
Figures 18 and 19 are respectively a plan and a section of the main disk of the
lower work support.
Like letters of reference indicate corresponding parts in the various figures.
The object of my present invention is to provide for greater variations in the
length of stitches, both above and below the intended or desired length, and render
the machine capable of selecting the spaces between such widely varying stitches
with even greater certainty than in the machine hereinbefore referred to, and to
this end I construct the machine as illustrated in the accompanying drawings in
which A is the bed of the machine head preferably mounted upon a column A¹ only
a small part of the upper portion of which is shown in the drawings.
The bed A has secured thereto the upwardly projecting stands A2 A² in bearings
in which is mounted the shaft. B, having mounted upon one end thereof the hand
wheel C, upon its other end the grooved driving wheel D and between its two
bearings the cam wheels E and F as shown.
The bed A is also provided with the upwardly projecting stand A³ Figures 3

page_text: and 4 formed preferably in one piece with said bed, and having formed in its upper
end a groove to receive the reciprocating feed slide G, and in its front side with a
vertical groove or bearing for the vertically movable bar H, and said bed also has
secured to its upper surface the stand A which extends upward therefrom and is
provided with a forward and downward arm which is secured by the bolt a to the
stand A3 as shown in Figures 1, 2 and 3.
The vertically movable bar H is held in its bearing in the stand A³ by the
rémovable cap plates and has secured thereto the pendent rod J which passe
through the tubular adjusting screw J'fitted to a threaded bearing in the stand A³
secured to the front of the stand A3 as shown in Figures 2, 3 and 4.
The rod J is surrounded by the spring d'and washer or collar e, between the
upper end of the adjusting screw J' and the ear H' projecting from the front of
the bar H, which tends to move the bar H upward, when the operator's foot is
removed from the treadle (not shown) which is connected by the link or connecting
rod K to the lower end of said rod J for the purpose of depressing the bar H
and the work support carried thereby to facilitate the placing and removal of the
work.
The rod J has adjustably secured thereon near its lower end the collar d', and
bas fitted thereon between said collar and the lower end of the screw the rubber
cushion d2 as shown.
The horizontally reciprocating feed slide G is secured in its bearing by the cap
plates e e Figures 1 and 4 and has formed thereon the inclined upwardly projecting
ear G' to which is pivoted the tool stock carrying lever L as shown.
So far the machine is constructed and arranged substantially the same as the
machine described in the before cited Letters Patent except that the stands A² A*
and A are detachably secured to the bed A instead of being formed in one piece
therewith.
The slide G has pivoted thereto the hand lever G2 Figures 1, 2, 3 and 5 carrying
at its inner end the pin ƒ Figure 4 upon which is mounted the rectangular block f
which is fitted to and movable in a slot in the under side of the short arm of the
feed lever M, the opposite arm of which lever carries a can truck which fits into
and is acted upon by the path, formed in the periphery of the cam wheel E,
Figure 1 to vibrate said lever and reciprocate the feed slide G a greater or
less distance according to the position of the block f relative to the fulcrum of
said lever M.
The slide G is provided at one end with the extension G³ Figures 7-9 to the
outer end of which is secured the segmental plate g¹ in which are formed two.
series of holes h Figure 1 to receive stop pins to determine the position of and
lock the hand lever G2 in its adjusted position.
The lever L is pivoted at 2 to the ear G¹ Figure 1 and is provided with the
horizontal arm i, the movable end of which is engaged by the adjustable contact
pin set in the front end of the trip lever N the opposite end of which is
acted upon by a cam path 2 in the outside vertical face of the cam wheel E
which path is shown only in dotted lines in Figure 3, for the purpose of
raising the separating and indenting-tool from contact with the work at the
proper time.
The other arm of the lever L extends upward and then horizontally, and has
formed at its end the hub 3, in the centre of which is set the pin Figure 4 upon
which is mounted the tool stock O as shown.
The lever L has an oval ear or upward extension, Figures 10-12 just
above the hub i³, which has a curved slot i cut through its centre the front faces
of the hub and ear being in the same vertical plane and serving as a frictional
surface to hold the tool stock O, and said lever is also provided with the
extension in the hub of which is set a stud carrying a truck j upon which the
lower end of the steel plate secured to the front end of the presser-lever P
Figures 1 and 3 acts to depress the indenting tool when the point of said tool
has been properly located between two stitches.

page_text: The rear end of the lever P carries a truck which is fitted to and acted upon by
the path F in the side of the cam wheel F as shown in Figures 1 and 3.
The tool stock O has its lower portion constructed to hold the tool k
substantially as in my former Patent, and is pivoted to the hub by the pin 4
in substantially the same nanner as in said Patent, but the upper portion of
said stock is of different construction in that it is provided with a flat pad like
ear fitted to form frictional contact with the ear. of the lever L and has
screwed into its centre through the slot of said ear ³, the rearwardly pro-
jecting rod kupon which is fitted at the rear of said ear the chambered
inetal washer 1, in which is set a leather disk which is pressed against said
ear by the spring 12, the tension of which is regulated by the adjustable thumb
nut as shown in Figures 1, 3 and 4.
'
The stand A has adjustably secured to its upper end the upper work support
or table m substantially as in my prior Patent before cited and n is a gauge wheel
against which the edge of the shoe sole bears while the operation of separating or
pricking up the stitches is being performed.
Qis the lower work support in the form of a frusto-conical disk mounted in an.
inclined position upon and revoluble about the tubular threaded stud o, set in the.
inclined ear H2 projecting from the upper end of the bar H, and having a plurality
of annular grooves formed in its upper surface as shown in Figures 18 and 19.
The tubular stud or bushing o has a female screw thread formed therein and has
fitted thereto the bolt o¹ having its lower end squared to receive a wrench by which
it may be adjusted up or down therein and provided with the clamping nut o² by
which it may be clamped in the desired adjusted position.
The upper end of the bolt of has set therein the screw stud o³ upon which is
mounted so as to be revoluble thereon the supplementary or auxiliary work support ot,
by adjusting which to a greater or less height, the angle of the tread surface of the
shoe sole, to be acted upon, may be varied in order to present the work to the
separating and indenting tool in the proper position to produce the desired effect
thereon according to the varying shapes of the upper surface of the sole edge in
different classes of work. This construction and arrangement of the lower work
support is an important feature of my present invention.
The bar H has a slot p Figures 2, 4 and 5 cut through it, and has set therein so
as to span said slot a pin p₁ upon which is mounted the block p² fitted to and
engaged by the forked forward end of the lecking lever R pivoted at p³ Figures 4
and 5 to the stand A³ and having secured to its rear end the steel segmental ratchet
plate p with which one of the pawls q q¹ and q² engages to lock said lever and the
work support in the position to clamp the work between the upper and lower work
support.
The pawls q g¹ and q² are mounted upon a common fulcrum pin q³ set in the
lever R fulcrumed at its front end upon the stud p³ and carrying at its rear end the
truck which is fitted to and acted upon by the path F2 forined upon the inner
face of the cam wheel F said path being shown only in dotted lines in Figure 4.
By this construction and arrangement of the locking mechanism I am enabled to
obtain a finer adjustment of the lower work support with an increased leverage and
a coarser and consequently stronger tooth on the ratchet plate, which is a very
important advantage.
The pawls gq and q² vary in length a fraction of the length of a tooth of the
ratchet plate p and they are pressed towards the ratchet plate pt by the springs p³
and are disengaged therefrom by coming in contact with the pin 7 set in the ear r²
projecting to the rear from the stand A3 all as shown in Figures 4 and 5.
The lever L has set in an ear projecting therefrom the threaded studs provided
with the check nut s' and connected to its lower end is one end of the spring s² the
opposite end of which is connected to a fixed part of the machine substantially as in
the prior Patent before cited.
The plate j' secured to the front end of the presser lever P is provided near the
middle of its height with the forwardly projecting lip or lug 2 Figures 2, 3, 16 and 17

page_text: having a curved or cam-shaped under surface the full or thick part of said lug acting
as a stop to limit the upward movement of the truck 3 mounted on a stud set in the
laterally projecting arm O¹ Figures 13-15 of the tool-stock O, and thus maintain
the indenting tool in a substantially perpendicular position when the front end of
the presser lever is in its depressed position and the indenting tool is forced into the
work.
The path g of the cam wheel E is of a peculiar construction for the purpose of
imparting to the feed slide G, and the parts carried thereby, a double recipro-
cation of varying lengths of movement in order to the more accurately locate
the spaces between the stitches, when the variation is extreme, both above and
below the regulation length.
The formation of said path is as follows: Assuming that the cam shaft revolves
in the direction indicated by the arrow on Figure 3, and that the cam is started to
rotate from the position shown in Figure 1 and indicated by the centre of the stud
upon which the cam truck carried by the rear end of the lever is mounted, the first
50 degrees of the rotation of said cam is a standstill or rest t, so far as concerns any
movement of the feed lever, the next 35 degrees is a throw t¹ towards the left of
Figure 1, of three-fourths of the full vibration of the rear end of said lever, the
next 55 degrees is a rest t2, the next 30 degrees is a throw t3 towards the right,
equal to of the full vibration of said lever, the next 60 degrees is a throw t',
towards the left, equal to one-half the entire vibration of the rear end of said lever,
and thus completing the movement of said lever in that direction, and the travel of
the slide G towards the right, the next 30 degrees is a throw to, toward the right,
of a distance equal to of the entire vibration of the rear end of said lever; the
next 40 degrees is a rest to, and the remaining 60 degrees is a throw t' of the other
three-quarters of the movement in the same direction, when the feed lever and feed
slide will be in the same position as at starting, and a single revolution of the cam
will have been completed.
This construction of the path g of the cam wheel E is clearly illustrated in
Figure 6 of the drawings.
The edge gauge wheel n is mounted upon the stand S secured to the top of the
stand A³ by means of the bolts u u Figure 1 which pass through slotted holes in
the foot of said stand so that said stand may be adjusted toward or from the front
of the machine to a limited extent.
S¹ is an adjusting screw threaded in a lug or ear on the cap plate e and engaging
by its head with a notch in the edge of the foot of said stand as shown in
Figures 1 and 2, so that by slackening the bolts uu, and turning the screw SI
in or out the stand S may be easily adjusted to the desired point when the bolts uu
are again screwed down to clamp said stand firmly in position.
The operation of my invention is as follows:-
The parts being in the position shown in the general view of the drawings, that
is, with the front end of the trip lever raised to its uppermost position, the front
end of the presser lever in its lowermost position, the rear end of the lock lever in
its highest position, with its pawls thrown out of engagement with the teeth of the
ratchet, by coming in contact with the pin r and the feed slide at the extreme of
its movement towards the left, if the cam shaft be revolved in the direction indicated
by the arrow on Figure 3 during the first 15 degrees of movement of said shaft the
several parts remain at rest to allow time to turn or swing the shoe so as to
maintain the shoe at all times with the portion of the sole for the time being to be
acted upon parallel with the line of movement of the feed slide.
The next 35 degrees of rotation of said shaft causes the front end of the presser
lever to be raised to its extreme height, depresses the rear end of the pawl lever R
causing the pawl to engage the ratchet teeth of the lever R and raise and lock the
lower work support, and moves the front end of the trip lever N to its lowermost
position at a speed corresponding to the upward movement of the front end of the
presser lever so that the truck j³ carried by the tool stock will be maintained in
.contact with or in close proximity to the under surface of the thicker part of the

page_text: Tug on the presser lever, and the truck j is in contact with the lower end of the
plate jl.
The next 35 degrees of rotation causes the feed slide and the parts carried
thereby to be moved towards the right a distance equal to the length of the
regulation or standard stitch for the job in hand, which movement is equal to
three fourths of the entire movement of said slide in that direction, the separating
or indenting tool having been previously raised out of the work and the work
having been clamped between the upper and lower work supports.
During the next 55 degrees of rotation the front end of the trip lever N is raised
to its extreme upward position thereby allowing the tension of the springs to move
the long arm of the lever L and the tool stock and tool carried thereby downward
so that the point of the tool will enter the space between two stitches if the stitch
just passed over by said tool is of the standard length, but if said stitch is shorter
or longer than the standard length the point of the tool will rest lightly upon the
stitch.
During the next 30 degrees of rotation, the feed slide is moved towards the left
a distance equal to one-third of the length of the standard stitch or one-quarter of
the full movement of said slide in one direction and if the point of the separating
tool is between two stitches said tool and its stock will assume a slightly inclined,
position toward the left, the resistance to the movement of the point of said tool
presented by the raised stitch overcoming the friction between the pad and the
ear is caused by the tension of the spring 12, but if the stitch passed over in the
movement towards the right is less than the standard length, the point of the tool
when it descends will rest upon the second stitch from the starting point, and
when the feed slide is fed towards the left as above described the point of said
tool will drop into the space between the two stitches when it arrives at the
proper point.
During the next 60 degrees of rotation the feed slide is moved towards the right
a distance equal to two thirds the length of the standard stitch or one half the
whole movement of said slide towards the right and completing its movement in
that direction, during which movement the separating tool will assume a position
inclined towards the right if its point has previously dropped into a space between
two stitches, but if the stitch passed over by said tool in its first movement towards
the right a long stitch and the point of said tool when it descended rested
upon said long stitch this last movement towards the right would cause said tool
to drop into the space between the end of the stitch and the one next to the right
thereof.
During the next 30 degrees of rotation the feed-slide and the tool stock carrying
lever will be moved toward the left a distance equal to one-third the length of the
standard stitch, or one-quarter its complete stroke in one direction, thus completing
the test for the location of the space between the two stitches, and if the stitch
previously passed over by the tool in coming toward the right is longer than the
standard stitch the separating tool will be slightly inclined toward the left when
the last mentioned movement of the feed slide towards the left is completed, the
truck being then beneath the cut away or thinner portion of the lug of the
plate so that the tool stock O may be moved about its pivot pin by reason of
the resistance to the movement of the point or working end of the separating tool
presented by the stitch in advance thereof overcoming the friction between the
bad k¹ of the tool stock and the ear 5 of the lever L.
During the last 120 degrees of the rotation the presser lever will have had its
front end depressed one-half of its entire stroke, aud in the next 15 degrees of the
otation the front end of the presser lever will complete its downward stroke and
force the separating tool into the work, to clearly define the space between the two
titches and indent the sole or welt by the action of the lower end of the platej upon
he truck carried by the lever L without the lug coming in contact with the
ruck j³.

page_text: In the next 25 degrees of rotation the rear end of the lever R' is raised to the
extreme of the upward movement thereby disengaging the pawls from the ratchet
teeth on the lever R and unlocking the lower work support, and in the remaining
60 degrees of the rotation the feed slide and the parts carried thereby are moved
towards the left a distance equal to the length of the standard stitch or three-
quarters its entire stroke in one direction and feeds the work a distance equal to
the length of the stitch that is in advance of the point of the separating tool
whether it be of the standard length or longer or shorter than the standard, thus
bringing all the parts of the machine into the same position they occupied at the
commencement of the operation and a complete cycle of operations having been
completed, and the shoe advanced one stitch, which operation may be repeated at
each revolution of the cam shaft, it being understood that before commencing the
operation above described the operator had placed the sewed shoe in position
between the work supports Q and m with the tread surface of the sole resting upou
the work supports Q and o*.
The tool stock O is pressed against the lever L by the tension of the spring
so as to cause friction sufficient between said parts to hold said tool stock in the
same position relative to said lever until moved therefrom by force applied to the
operating end of the tool or to the truck ³ carried by the arm 0¹ to move said
stock about its pivotal connection to said lever.
Having now particularly described and ascertained the nature of the said
invention, 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 :-
1st. In a machine for separating or "pricking up" the stitches on boot and shoe
soles the combination of a work support; a vertically and laterally movable
separator for locating the intervals between the stitches whether of uniform or
varying lengths; means for imparting to said tool a plurality of lateral movements
to locate the interval between the stitches, and another lateral movement to feed
the work; and means for frictionally holding said separator in the position to
which it is vibrated in either direction till moved by a resistance applied to its
working end.
2nd. In a machine for separating the stitches on boot and shoe soles the com-
bination of a work support; a vertically and laterally movable separator for
locating the intervals between the stitches whether of uniform or varying lengths;
means for imparting to said tool a plurality of lateral vibratory movements to
locate the intervals between the stitches, and another lateral movement to feed the
work; means for frictionally holding said separator in the position to which it is
vibrated in either direction till moved from said position by a resistance applied
to its working end; and means for forcing said separator between the stitches
when the point of said separator has located itself between two stitches.
3rd. In a machine for separating the stitches on a boot or shoe sole, the
combination of a work support; a horizontally reciprocating slide; a separating
tool carried by said slide and movable vertically relative thereto; a cylinder cam
provided with the path g having the throw and stand-stills as set forth; a cam
lever operated by said path and connected to said slide, whereby said separator is
moved toward the right a distance equal to the length of the standard stitch, then
towards the left a distance equal to one-third of the length of the said standard
stitch, then towards the right a distance equal to two-thirds the length of the
standard stitch and then towards the left a distance equal to one-third the length
of said standard stitch to locate the interval between the stitches and then toward
the left a distance equal to the length of the standard stitch to feed the work;
means for frictionally holding said separator in the position to which it is vibrated
in either direction till moved from said position by a resistance applied to its
working end; means for depressing said separator, to cause it to rest lightly upon
the work, after the first movement thereof towards the right; and ineans for

page_text: Deen
orcing sail separator between the stitches, when its point has
etween two stitches, and just preceding the movement toward the left for feeding
he work.
4th. In a machine for separating the stitches on boot and shoe soles the
combination of the feed slide; the tool stock carrying lever provided with truck ;;
the tool stock provided with the arm O' and the truck 3; the separating tool k;
a spring for depressing the tool stock; a lever connected at one end to said slide ;
the cylinder cam path g having the throws and rests as set forth and arranged to
act upon and vibrate said lever; a lever and cam for raising said tool stock and
tool; the lever P provided with the plate j on its front end with the cam shaped
lug constructed and arranged to act upon the trucks; and 3 as set forth; and a
cam for vibrating said lever P.
5th. In a machine for separating the stitches on boot and shoe soles the
combination of a horizontally reciprocating slide; a vibrating lever carried by
said slide; a tool stock pivoted to said lever; means for frictionally holding said
separator in the position to which it is vibrated in either direction till moved from
said position by a resistance applied to its working end; a separating tool for
locating the intervals between the stitches, whether of uniform or varying lengths,
carried by said stock.
6th. In a machine for separating the stitches on boot or shoe soles, the combination
of a horizontally reciprocating slide; the lever L pivoted thereto and provided
with the slotted ear ; the tool stock O pivoted thereto and carrying the separating
tool k; and provided with the friction pad or upward extension ; the rod k² set
in said pad and extending through the slotted ear of the lever L; the frictional
washer ; the spring 12; and the thumb nut i³.
7th. In a machine for separating the stitches on boot and shoe soles the
combination of a revoluble main lower work support having a frusto-conical
upper surface provided with a plurality of annular grooves formed in said conical
upper surface near its peripheral edge, said support being mounted upon an inclined
axis; a fixed upper work support to bear upon the welt of the boot or shoe; and
a gauge to bear against the sole edge.
on boot and shoe soles the
8th. In a machine for separating the stitches
combination of a main lower work support as Q, having a frusto-conical upper
surface and mounted upon an inclined axis; and an auxiliary support as of revolubly
5 mounted upon a bearing in axial line with the main support and adjustable to and
from said main support.
9th. The combination in a stitch separating machine of a vertically movable
bar having an outwardly and downwardly projecting arm or ear; a tubular stud
set in said inclined ear; a frusto-conical disk mounted upon and revoluble about
0 said tubular stud; a threaded bolt fitted to and adjustable end wise in said tubular
stud; a screw stud set in the upper end of said bolt; and an auxiliary supporting
disk mounted upon and revoluble about said screw stud.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.