Improvements in Machines for Rounding the Soles of Boots and Shoes.
Year: 1898

page_text: Date of Application, 15th Mar., 1898-Accepted, 27th Aug., 1898
COMPLETE SPECIFICATION.
[Communicated from abroad by MELLEN BRAY, of Newton, in the County of
Middlesex, and State of Massachusetts, United States of America.]
Improvements in Machines for Rounding the Soles 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 statement:-
My invention relates to sole rough rounding machines, and it consists in certain
novel features of construction, arrangement, and combination of parts which
will be readily understood by reference to the description of the accompanying
drawings in which :-
Figure 1 is a plan of the head of a machine embodying my invention.
Figure 2 is a front elevation of the same.
Figure 3 is a side elevation.
Figure 4 is a partial sectional elevation, the cutting plane being on line x x of
Figure 2 and looking towards the right of said figure.
Figure 5 is a vertical section on line y y of Figure 4 looking towards the right
of said figure.
Figure 6 is a rear elevation of the regulating index and detent wheels and the
detent spring.
Figures 7 and 8 are respectively a plan and an edge view of the cutter.
In the drawings A is the frame of the head of the machine comprising a base and
two upwardly projecting arms, in suitable bearings in which are mounted the driving
shaft B, a fixed journal pin B1 in axial line with said driving shaft, the crank shaft
C, the cam shaft D and a fixed fulcrum pin E.
The driving shaft B-bas firmly secured upon its outer end the driving pulley F,
and near its inner end the worm G, and has formed upon its inner end a crank-pin
for operating the cutter har K.
The fixed journal pin B¹ has mounted upon its inner end the rear end of the arm I
in such a manner that said arm may be oscillated to a limited extent about said
journal pin, and said pinhas: loosely mounted upon its outer end.the lever J.
The arm I has formed therein two horizontal guideways in which are mounted so, as
to be movable endwise therein the bars K and L.
The bar K has pivoted to its rear end, one end of the link K¹, the other end of
which is mounted upon the crank-pin formed on the inuer end of the shaft B, and the
front end of said bar has secured thereto the cutter a.
The bar L has mounted on a vertical stud set in its front end the pressure roll b
and is connected at its rear end to the movable end of the short arm of the elbow
lever M, the long arm of which is connected by the rod c to a treadle (not shown)
mounted upon the floor in such a manner that a pressure upon the front end of the
Го
077

page_text: treadle will move the bar and roll towards the rear against the tension of the spring M¹
shown only in dotted lines in Figure 3.
N is the feed shaft mounted in bearings in the stand N¹, in an inclined position,
has secured to its front end the feed disc N2, and to its rear end the worm wheel N³
which engages with, and has motion imparted to it by, the worm G..
O is the anvil plate against which the cutter a abuts after piercing the sole, said
plate being firmly bolted to the front end of the arm I.
The bar L has fitted to a groove in its under side at its front end, a block & so that
said block can be moved endwise of said bar, for the purpose of adjustment and is
secured in the desired adjusted position by a clamping screw passing through a slot
therein and screwed into said bar, and said block has a stud set therein upon which
the guide roll is mounted as shown in Figures 2 and 3.
*The rolls band b¹ are made frusto-conical, as shown, so as to better fit against the
tread surface of a sole on the last, that has considerable convexity or curve
transversely.
The arin I has set in its side near its lower end the stud e which is engaged by one
end of the lever P which is fulcrumed upon the pin F and has connected to its other
end the rod or wire f the lower end of which is connected to a treadle. (not shown) in
such a manner that if pressure is applied to the front end of the treadle the front end
of the arm I, the cutter a, and the anvil plate O will be raised to permit the free.
backward rotation by the weight V of the cam-shaft after it has been partially rotated
by the ratchets, said parts being returned to their normal or lowest positions, when
the pressure is removed from the treadle, by the combined action of gravity and the
tension of the spring, said normal or lowest position being controlled and regulated
by the screw stop h set in the ear h¹ in said arm I, and bearing upon the base plate
of the frame A as shown in Figure 2.
In operating upon a shoe sole, to rough round it, the sole edge is inserted between
the pressure rolls band b₁ on one side and the anvil plate O and the feed disc N² on
the other side with the tread surface of the sole toward said rolls and the lower edge
of the feed disc in contact with the inseam.
If it is desired to rough round a sole having a "Baltimore edge," so called, that is,
a sole that, on the outside of the shoe projects a constantly varying distance from the
inseam, I automatically raise and lower the arm and the cutter a. This is
accomplished as follows:
The shaft D is mounted in a bearing in the frame A, and a bearing in the stand Q
and has mounted on one end thereof at the right of said frame two cams í and i¹
one or the other of which, when the shaft D is rotated, acts upon the roll j to raise the
front end of the arm. I, and allow it to be drawn down again by the combined action
of gravity, and the tension of the spring g.
The roll or truck j is mounted upon the stud set in the arm I and is movable
endwise of said stud to transfer it from a position above the cam i to a position
above the cam i or "vice versa," by means of the shipper lever k, the inner
end of which is forked and embraces the edge of the truck j, as. shown in
Figures 1 and 2.
The roll or truck j is located above the cams and the weight of the arm I and
the tension of the spring 9 will keep said roll in contact with one or the other
of said cams unless prevented. from such contact by the adjustment of the screw
stop h.
The cam shaft D has firmly secured thereon between its two bearings the two
ratchet wheels and separated from each other and between them is loosely
mounted upon the shaft D the lever m the upper end of which has secured
thereto a thin curved metal plate n which projects laterally over both ratchet wheels
so as to cover a portion of the teeth of each ratchet, the lower end of said lever m
having pivoted thereto one end of the link ml, the opposite end of which is pivoted
to one arm of the elbow lever R, the other end of which is connected, by the elastic
connection O, to a treadle upon the floor, not shown.
The shaft D also has loosely mounted thereon, one at the right and the other

page_text: at the left of said ratchets, the two pawl levers p and p¹ carrying the pawls
q and respectively, and having pivoted thereto the rods r and respectively as
shown.
The driving shaft B has firmly secured thereon just inside the driving pulley F
the spur gear wheel S, the teeth of which engage the teeth of the larger
spur gear wheel S₁ mounted upon the shaft C so as to be movable end wise
thereof to disengage it from the gear S, but when in engagement with said
gear $ it is clamped to said shaft so that said shaft will be revolved with said
gear wheel S
The opposite end of the shaft C has formed thereon the crank pin s shown in
Figure 3, only sightly eccentric to the axis of said shaft, to which is fitted one end
of the link s, the opposite end of which is pivoted to the short arm of the lever J,
to the movable end of the long arm of which are pivoted upon a common pin, the
links and t.
The rear end of the link is connected to the upper end of the equal armed
lever T, fulcrumed upon the stud u, set in the stand U secured to or formed in one
piece with the frame A, all as shown in Figures 1 and 3.
The cam shaft D has firmly secured thereon the grooved pulley D₁ to which is
attached one end of a cord v which after passing partially around said pulley, and
over the sheave v¹ has attached to its other end the weight V, which; when the truck
jis raised by the upward movement of the front end of the arm I caused by
the action thereon of the lever P when operated by the operator, will rotate the
cam shaft in the opposite direction to that imparted to it by the ratchet mechanisms,
the extent of said backward rotation being limited by a stop pin w set in said pulle
D' coming in contact with a stop pin w set in the stand Q as shown in
Figures 1 and 3.
'
The shield n when in its normal position, or with its carrying arm in contact
with the adjustable screw stop a¹ with which it is normally held in contact by the
spring m² will so cover the teeth of the ratchet wheels that the pawls will not
engage said ratchets and consequently no motion will be imparted to the cams i
and even though the pawl levers are vibrated, and if the machine be operated
under these conditions without the long arm of the lever R being depressed the
sole will be trimmed all around the fore part of the ball of the shoe at a uniform
distance from the inseam.
If a sole is to be trimmed with a "Baltimore edge" the shield must be moved
towards the front of the machine a sufficient distance to uncover one or more
additional teeth of the ratchet at its back edge according as to whether the sole to
be rough rounded is a short or a long one.
This forward movement is obtained by a downward movement of the elastic
connection O, caused by the operator placing his foot upon the treadle connected
therewith and depressing it.
To limit said forward movement of the shield to any desired point I provide
the screw stop pin a² threaded in the bracket or ear 62 and having secured thereon
the hand index wheel W, and detent collar c¹, by means of clamping nut c², said
collar c¹ having four detent notches 1, 2, 3 and 4 forined in its periphery at equal
distances from each other, with one of which notches the detent spring d' is engaged
whenever the machine is in operation.
The index wheel W has stamped or otherwise fixed upon its front face the numbers
6, 8, 10 and 12 around its outer edge and at equal distances from each other,
the numbers 6 and 10 being in the same vertical plane as the detent notches
1 and 3, and the numbers 8 and 12 being in the same horizontal plane as the
detent notches 2 and 4.
When the index wheel W is in the position shown in Figure 2 with the index
Figure 6 at the top the screw stop a² will be in the position indicated in Figure 4
and the machine is adjusted for rough rounding a No. 5 to 6 sole with a "Baltimore
edge." but if said index wheel be turned one quarter of a revolution in the direction
indicated by the arrow on said wheel the stop screw will be moved towards the stop a¹

page_text: a distance equal to one half a tooth of the ratchet and the machine will be in con-
dition to rough round a No. 7 to 8 sole, and so on, each one quarter of a revolution
of the index wheel in the same direction, advancing the screw stop a distance equal
to one half a tooth of the ratchet, until the index Figure 12 is uppermost, which is
the limit of movement in that direction.
The cans and are designed to be moved about their axes of motion by the
action of the pawls upon the ratchet wheels only one half of a revolution, and in
order to prevent a greater movement, even if the operator should neglect to remove
his foot from the treadle at the proper time, each of the ratchet wheels and l¹ has a
section of its periphery left smooth, or without teeth, as shown at 8 on Figure 4.
Two stop pawls el are pivoted to a portion of the frame A, and are pressed into
engagement with the teeth of the ratchet wheels by springs (Fig. 4), and retracted
therefrom by the rearward movement of the lever fl caused by the contact of the
pin with the arm when the lever L is moved to the extreme of its forward
movement.
The stud is adjustably set in the slot g¹, formed in the arm I, as shown in
dotted lines in Figure 3, so that the stud j may be raised or lowered to bring
it into contact with the portion of the cam having the smallest radius when the stop
screw h rests upon the base plate of the frame A.
The cutter is made of the form shown in plan in Figure 7 and has a cutting edge
across its forward end around the projection 5 and along the right hand edge
to 6 as shown in Figure 7.
(94)
The advantage of a cutter formed as shown is that some portion of the cutting will
he done during the backward movement of said cutter.
It will be observed that the cams and are right and left cams, being
otherwise exactly alike and impart the same motion to the art I but 'in the
reverse order.
The springs g and M¹ are provided with suitable adjusting devices for regu-
lating the tensions thereon in a well known manner as shown in Figures 1, 2
and 3. The operation of my invention will be readily understood from the
foregoing without further explanation.
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 correspondent, I declare that what I claim is :-
1st. A cutter for sole rough-rounding machines having a cutting edge across
its front end and along one side and having a rounded or curved lateral pro-
jection at the junction of said cutting end and side.
2nd. In a sole rough-rounding machine the combination of a feed shaft mounted
in fixed bearings in an inclined position; a feed disc carried by said shaft; an
oscillating cutter arm, a cutter carried by said arm; means for reciprocating said
cutter in a direction at right angles to the line of feed; a cam shaft mounted in
fixed bearings; a pair of right and left pattern cams carried by said shaft; means
for rotating said cams through a half revolution; an anti-friction truck mounted
upon a stud, adjustably set in said cutter arm above said cams and moveable endwise
of said stud for the purposes specified.
3rd. In a sole rough-rounding machine the combination with a rotary feed disc;
of an oscillating cutter arm; a reciprocating cutter carried by said arm; a gauge bar
fitted to a bearing in said arm and movable end wise toward and from said feed disc;
a pressure roll mounted on a fixed stud set in said har and a second pressure roll
mounted upon a stud adjustably connected to said bar and movable thereon in the
direction of the length of said bar.
4th. In a sole rough-rounding machine the combination of a feed shaft
mounted in fixed bearings; a feed disc carried by said shaft; means for revolving
said disc; a pivoted cutter arm; pressure rolls and a cutter carried by said arm;
means for moving said cutter and rolls toward and from said feed disc; a cam
shaft mounted in fixed bearings; a pair of right and left pattern cams mounted

page_text: on said shaft; an anti-friction truck mounted upon a stud, adjustably set in said
cutter arm, and movable endwise thereon from a position over one cam to a position
over the other cam; a pair of ratchet wheels mounted on said cam shaft in fixed
positions; an adjustable shield covering portions of the teeth of each ratchet; a pair
of levers each carrying a pawl to act upon one of said ratchets and means for vibrating.
said pawl levers in opposite directions, or so that when one pawl is advancing the
other is receding, as set forth.
5th. In a sole rough-rounding machine the combination of the shafts B and C;
the gears S and S1; the vibratory arm I; the anti-friction truck j carried by said
arm; the cam shaft D mounted in fixed bearings; the right and left pattern cams
i and and the ratchet wheels and carried by the shaft D; the shield n; means
for controlling the position of said shield; the pawl levers p and pl; the pawls q and
ql; the links, and t; the levers J and T, the crank pin s on the shaft C; and
link s¹ all constructed, arranged and operating substantially as described.
6th. In a sole rough-rounding machine the combination with work feeding
mechanism, of a vibratory cutter arm; a reciprocating cutter and an anti-friction
truck carried by said arm; a cain shaft mounted in fixed bearings; a pair of right
and left pattern cams fixed upon said cam shaft and arranged to act upon said truck
to raise said cutter arm; a ratchet wheel mounted upon said cam shaft; a pawl and
pawl lever for moving said shaft about its axis; a lever provided with a shield to cover
a portion of the teeth of said ratchet; an adjustable stop to limit the movement of
said shield in one direction; a spring to normally hold said shield lever in contact.
with said stop; a second adjustable stop screw to limit the movement of said shield
lever in the opposite direction; an index wheel and a detent collar secured upon said
screw stop; and a detent spring to lock said screw stop in adjusted position.
Dated this 15th day of March 1898.
HASELTINE, LAKE & Co.
45, Southampton Buildings, London, W.C., Agents for the Applicant.