Improvements in Rough Rounding and Channelling Machines for Boots and Shoes.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Rough Rounding and Channelling Machines for
Boots and Shoes.
I, WILLIAM HENRY DORMAN, of the Green Hall, Stafford, Engineer, do hereby
declare the nature of this invention to be as follows:
This invention consists in an improved feed for rough rounding and channel-
machines.
in provide a table to support the sole of the shoe, having its edge as near as
convenient to the channelling knife.
This table assists in feeding forward the shoe by being made to intermittently
revolve upon an axis approximately perpendicular to the sole of the shoe-in
unison with the feeding jaws, when the latter are feeding forward the shoe, and
to remain stationary during the opening and return movement of the jaws.
The table is carried on that part of the machine which supports the channel-
ling knife, and may be operated by a ratchet wheel and pawls from one of the
feeding jaws, and be provided with a retaining pawl to prevent back movement.
If desired I may employ a roller, in lieu of the table, having its axis approxi-
mately parallel to the sole of the shoe, and give to it an intermittent revolving
feed movement in a similar manner to that described for the table.
Dated this fith day of April 1899.
Improvements in Rough Rounding and Channelling Machines for
Boots and Shoes.
I, WILLIAM HENRY DORMAN, of the Green Hall, Stafford, 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:-
This invention relates to an improved feed for rough rounding and channel-
ling machines.
In such machines the shoe upon its last and with the sole in position (being
held to the shoe by some adhesive solution) is held by the operator up to the
machine and guided by hand as the operation proceeds.
The machine is provided with a gauge to assist the operator in guiding and
supporting the shoe, with a feeding arrangement more or less in the form of a pair
of jaws which advance the work as the operation proceeds, with a paring knife
which reciprocates and "rough rounds" the edge of the sole and the welt, with

page_text: a channel knife which simultaneously cuts a channel in the sole, and with a
roll which bears upon the sole in proximity to the channel knife and supports
the sole.
Now my invention. consists in providing in lieu of the above mentioned roll a
feeding roll or table, that is to say, a roll or table to which a positive feeding
movement of revolution is imparted by the machine in unison with the feeding
movement of the jaws, or like already known arrangement.
In carrying out the invention the roller or table is revolved intermittently
upon an axis, which is either approximately parallel to or else a
approximately
perpendicular to the sole of the shoe; the movement being made in unison with
the movement of the feeding jaws, when the latter are feeding forward the shoe
and the roll or table being caused to remain stationary during the opening and
return movement of the said jaws.
The roll or table is carried on that part of the machine which supports the
channelling knife, and may be operated by a ratchet wheel and pawls from one
of the feeding jaws, and be provided with a retaining pawl to prevent back
movement; or the movement may be derived from a special cam and con-
nections.
In the accompanying drawings,
413 17.8.
Figure 1 is a sectional side view of a roll feed shewing the work in position.
Figure 2 is a plan thereof:
Figure 3 is a front view of a portion of the feed mechanism;
Figure 4 is a sectional view of a detail:
Figure 5 is a sectional side view of a table feed drawn to a smaller scale.
Figure 6 is a plan thereof;
..1
Figure 7 is a side elevation drawn to a larger scale of a portion of the table
feed shewing the work in the operative position; and
Figure 8 is a plan view of a detail.
My roll or table feed is in the drawings shewn applied to a rough rounding
and channelling machine of the kind described in iny former Patent No. 2895
of 1899 although I wish it to be clearly understood that the invention can be
equally well applied to other types of rough rounding and channelling machines.
Referring first to the roll feed shewn in Figures 1 to 4, A is a portion of the
frame of the machine and A¹ the part which carries the feed roll. B and C are
the feed jaws, D is the paring knife and E the channelling knife: all these
parts being of known construction.
a is the sole supporting roll which I carry upon a shaft a¹ (Figure 4) which is
rotatably mounted in the bearing a² and is provided with a worm wheel a³ at the
end remote from the roll a. This worm wheel a³ engages a worm 6 mounted
upon a shaft 6' supported in bearings 62, 62 carried by the part A¹ of the machine
frame.
To impart the reqired intermittent rotary movement to the roll a through the
medium of the shaft I advantageously provide the following mechanism, that
is to say, I key upon the said shaft a ratchet wheel and I also mount upon
it a hanging lever. 6. This hanging lever 4 has a pawl 65 held in engagement
with the ratchet wheel 63 by a spring 66 upon the lever 6 which is oscillated on
the shaft 61 by the connecting rod c. The rod is connected at its other end to
one end of an arm or lever pivoted at 2 to the machine frame and having a
roll held by a spring against the periphery of a came which is mounted on
the main cam shaft F of the machine. The connecting rod c is jointed at its
ends to the lever 64 and the arm c¹ by means of balls, which fit in sockets c²,
and are held therein by caps, which, however, allow the necessary movement.
The cam revolves in the direction of the arrow 1 Figure 1; the rise c pulls
upon the rod and by means of the ratchet 63, pawl 65 and gear a³, b rotates
the feeding roll a in the direction indicated by the arrows 2 and 3, the move-
ment, taking place in unison with the ordinary movement of the jaws B and C
for feeding forward the work G.

page_text: The fall of the cam 5 permits the spring to return the pawl 65 and this
movement takes place in unison with the ordinary return movement of the feed-
ing jaws B and C.
Figures 5, 6, 7 and 8 shew the feeding table which may be employed instead
of the feeding roll already described.
d is the table, the said table being provided with a central stem or pivot d¹
free to revolve in the bearing d²; its edge d³ supports the sole of the work Gas
near as possible to the channelling knife E. e, (Figure 8) is a ratchet wheel
fixed to the table d and caused to rotate intermittently by the pawl e¹ carried
upon, and operated by, the lever e² which is free to swing horizontally upon the
stem d. The lever is connected by the ball ended rod f to another lever fl
mounted upon a vertical shaft g supported in bearings g₁, g carried by the
machine frame and provided with a lever g2 connected by another ball ended
rod g to the ordinary feed lèver H of the machine engaging the groove i of
the cam I. e is a detent or pawl carried upon the stationary pivot e for pre-
venting the ratchet wheel e and table d turning backwards on the return of
the pawl e¹.
The operation of this construction of feed gear is as follows, that is to say,
the cam groove moves the lever H and feed jaws B and C (which are con-
nected together) to-and-fro horizontally for the purpose of feeding the shoe along
in the ordinary manner. The rod g moves in unison with the said lever H and
jaws B and C, and, through the medium of the lever g², shaft g, lever f¹, rod f
lever ², and pawl el, the wheel e and the feeding table d are made to move so
that the forward feeding movement of the jaws B and C takes place simultaneously
with the forward feeding movement of the table, the table remaining stationary,
with the work upon it, while the jaws B and C are opened by the ordinary opera-
tion of the machine and returned to take a fresh grip of the shoe preparatory
to again moving forward with the next forward movement of the table.
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
1. In a machine for rough rounding and channelling the soles of boots and
shoes the employment of a feed roll upon which the boot or shoe sole rests, the
said feed roll having an intermittent rotary motion positively imparted to it,
substantially as, and for the purpose, herein before described.
2. In a machine for rough rounding and channelling the sole of boots and
shoes the employment of a feed table upon which the boot or shoe sole rests, the
said table having an intermittent rotary motion positively imparted to it, sub-
stantially as, and for the purpose, herein before described.
3. The combination and arrangement of parts forming the feed mechanism
for rough rounding and channelling machines herein before described and illus-
trated in Figures 1 to 4 of the accompanying drawings.
4. The combination and arrangement of parts forming the feed mechanism
for rough rounding and channelling machines herein before described and illus-
trated in Figures 5 to 8 of the accompanying drawings.
Dated the 8th day of January 1900
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.