Improvements in Knife Holders for Sole-rounding Machines.
Year: 1893

page_text: Date of Application, 28th Dec., 1893
Complete Specification Left, 27th July, 14-Accepted, 1st Sept., 1894
PROVISIONAL SPECIFICATION.
[Communicated from abroad by GEORGE HENRY PECK FLAGG, of 122, Lincoln
Street, in the City of Boston, County of Suffolk and State of Massachusetts,
United States of America, Gentleman.]
Improvements in Knife Holders for Sole-rounding Machines.
1, 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 to be as follows:-
This invention relates to sole-rounding machines which employ a fixed pattern
against which the sole to be trimmed or "rounded "is clamped, a carriage which
travels around the pattern, and a knife holder pivotally connected to the carriage
and provided with a trimming knife which is caused, by the movement of the
carriage and by the pivotal connection of the holder to the carriage, to trim the
sole along the edge of the pattern.
In machines of this class it is very important that the cutting edge of the knife
be kept abreast or even with the pivot that connects the knife holder to the
carriage, so that the cutting edge will not be behind said pivot when in operation,
it being well known that when the cutting edge is behind the pivot the trimming is
imperfect, particularly at the toe of the sole, and more particularly when the sole
has pronounced angles at the toe, as in so called square-toed soles. The wear of
the knife naturally causes the cutting edge to gradually recede from its proper
position abreast the pivot, and it therefore becomes necessary to adjust the knife
from time to time to compensate for wear of its cutting edge. The invention has
for its object to provide improved means for adjusting the knife, so that its cutting
edge may be readily kept in the proper relative position without material loss of
time in the operation of adjusting.
The invention consists in a knife holder comprising in its construction a base
having a stud or pivot adapted to enter and turn in a bearing in the carriage of the
machine, a top plate having means for holding the knife and mounted adjustably on
the base so that the knife may be adjusted in the direction of its cutting movement
to compensate for wear of its cutting edge, and means for positively securing the
top plate to the base in any position to which it may be adjusted.
The machine has the usual fixed pattern; the clamp which secures the sole to
the pattern the carriage which is caused by suitable mechanism to travel around
the pattern, said carriage having a slide which is movable on the base of the
Said parts constitute
carriage and is pressed by springs toward the pattern.
elements of a sole-rounding machine, the construction and operation of which are
well known, the knife which is mounted on the slide being caused to move along
the edge of the pattern and to move in and out and thus follow the curvatures of
the pattern.
The present improvements relate wholly to the knife-holder, which is pivotally
connected to the slide..
The base of the holder has a downwardly-projecting stud or pivot which is
formed to turn freely in a bearing or socket formed for its reception in the slide,
the pivot and socket constituting a pivotal connection which enables the knife
holder to turn freely in a horizontal plane and also to be readily removed from the
slide.
The knife is directly attached to a top plate having suitable means for holding
the knife, said means being preferably dove-tail ribs or gibs, to which the dove-
tail shank of the knife is fitted. Said top plate is adjustable on the base in the

page_text: direction required to adjust the cutting edge of the knife in the direction of its
cutting movement.
The top plate may be connected to the base by a pivot which is located at one
side of the cutting edge of the knife, or at the opposite side of the knife from the
pattern, its arrangement being such that a swinging movement of the top plate on
said pivot will move the knife substantially in the direction of its cutting movement.
In the rear portion of the top plate is formed a segmental slot through which passes
a clamping screw engaged with a tapped socket in the base, the head of said screw
bearing on the top plate and positively holding it in any position to which it may
be adjusted.
By loosening the screw and turning the top plate on its pivot, the knife may be
readily adjusted to bring its cutting edge forward and thus compensate for wear
which without such adjustment would bring the cutting edge back of the pivot, the
proper position of said edge being abreast of said pivot.
The top plate may have a rectilinear instead of a swinging adjustment, the base
having a dove-tail guide and the top plate dove-tail ribs fitting said guide. In this
case the top plate will be secured by a clamping screw passing through a straight
slot in the top plate.
Dated this 50th day of Dananshan 1802
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Knife Holders for Sole-rounding Machines.
1, 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 sole-rounding machines, which employ a fixed pattern
against which the sole to be trimmed or "rounded" is clamped, a carriage which
travels around the pattern, and a knife-holder pivotally connected to the carriage
and provided with a trimming-kuife which is caused, by the movement of the
carriage and by the pivotal connection of the holder to the carriage, to trim the
sole along the edge of the pattern.
In machines of this class, it is very important that the cutting edge of the knife
be kept abreast or even with the pivot that connects the knife-holder to the
carriage, so that the cutting edge will not be behind said pivot when in operation,
it being well known that when the cutting edge is behind the pivot the trimning is
imperfect, particularly at the toe of the sole, and more particularly when the sole
has pronounced angles at the toe, as in so-called square-toed soles. The wear of
the knife naturally causes the cutting edge to gradually recede from its proper
position abreast the pivot, and it therefore becomes necessary to adjust the knife
from time to time to compensate for wear of its cutting edge. My invention has
for its object to provide improved meaus for adjusting the knife, so that its cutting
edge may be readily kept in the proper relative position without material loss of
time in the operation of adjusting.
The invention consists in a knife-holder comprising in its construction a base
having a stud or pivot adapted to enter and turn in a bearing in the carriage
of the machine, a top-plate having means for holding the knife and mounted
adjustably on the base so that the knife may be adjusted in the direction of its
cutting movement to compensate for wear of its cutting edge, and means for
positively securing the top-plate to the base in any position to which it may be
adjusted.

page_text: Of the accompanying drawings, forming part of this Specification,-
Figure 1 represents a top view of portions of a sole-rounding machine provided
with a knife-holder embodying my invention.
Figure 2 represents a perspective view of the holder.
Figure 3 represents a top view of the holder, showing the knife in section.
Figure represents a section on line 4-4 of Figure 3.
Figure 5 represents a section on line 5-5 of Figure 3.
Figure 6 represents a top view of the holder, showing the position of the top-plate
after the knife has been adjusted forward.
Figure 7 represents a perspective view of a modification.
The same letters of reference indicate the same parts in all the figures.
In the drawings-
I
represents the fixed pattern; the clamp which secures the sole to the pattern;
e the base of the carriage, the same being caused by suitable mechanisin to travel
around the pattern; and e' the sliding portion of the carriage, the same being
movable on the base e and pressed by springs toward the pattern. Said parts
constitute elements of a sole-rounding machine, the construction and operation of
which are well known, the knife which is mounted on the slide el being caused to
move along the edge of the pattern and to move in and out and thus follow the
curvatures of the pattern.
My improvements relate wholly to the knife-holder, which is pivotally connected
to the slide r'.
e represents the base of the holder, the same having a downwardly projecting
stud or pivote, which is formed to turn freely in a hearing or socket formed for
its reception in the slide e', the pivot and socket constituting a pivotal connection
which enables the knife-holder to turn freely in a horizontal plane, and also to be
readily removed from the slide c¹.
represents the top-plate, to which the knife is directly attached. Said plate
bas suitable means for holding the knife, said means being here shown as dovetail
ribs or gibs, to which the dovetail shauk y' of the knife is fitted, and is adjustable
on the base e in the direction required to adjust the cutting edge of the knife in the
direction of its cutting movement.
The preferred construction whereby said adjustment is permitted is shown in
Figures 1 to 6, inclusive, the top-plate being connected to the base by a pivot i,
which is located at one side of the cutting edge of the knife, or at the opposite side
of the knife from the pattern a, its arrangement being such that a swinging move-
ment of the top-plate on said pivot will move the knife substantially in the direction
of its cutting movement. In the rear portion of the top-plate is formed a segmental
slot, through which passes a clamping-screw & engaged with a tapped socket in
the base, the head of said screw bearing on the top plate and positively holding it
in any position to which it may be adjusted.
It will be seen that by loosening the screw and turning the top-plate on its
pivot, the knife may be readily adjusted to bring its cutting edge forward and thus
compensate for wear, which without such adjustment would bring the cutting edge
back of the pivot, the proper position of said edge being abreast of said pivot, as
shown in Figures 1 and 3. Figure 6 shows the position of the top-plate after it
has been adjusted to a considerable extent to compensate for wear of the knife.
Figure 7 shows a modification, in which the top-plate has a rectilinear instead
of a swinging adjustment, the base having a dovetail guide m, and the top-plate
dovetail ribs nn fitting said guide. In this case, the top-plate is secured by a
clamping screw o passing through a straight slot p in the top-plate.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. A knife-holder for sole-rounding machines, comprising in its construction a
base having a stud or pivot whereby it may be pivotally connected to the carriage

page_text: of the machine, a top-plate having means for holding the knife and mounted
adjustably on the base so that the knife may be adjusted in the direction of its
cutting movement to compensate for wear of its cutting edge, and means for
positively securing the top-plate to the base in any position to which it may be
adjusted.
2. A knife-holder for sole-rounding machines, comprising in its construction a
base having a stud or pivot whereby it may be pivotally connected to the carriage,
a top-plate having means for holding the knife and pivoted to the base at a point
back of the cutting edges of the knife so that a movement of the top-plate on its
pivot will cause an adjustment of the knife substantially in the direction of its
cutting movement, and a clamping screw engaged with the base-plate and passing
through a segmental slot in the top-plate, whereby the latter may be positively
secured in any position to which it may be adjusted.
Dated this 27th day of July 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.