Year: 1889

page_text: te of Application, 18th June, 1889-Accepted, 15th Mar., 1890

page_text: have dovetail ribs 88 formed to fit the dovetail sides of the grooves d of the
cutters, said ribs being curved and slightly eccentric to the axis of the shaft a, to
give the cutters engaged therewith the necessary clearance or decrease in height
from cutting edge to heel.
The sleeve 4 and the section 2 formed thereon are rigidly affixed to the shaft a by a
screw g, or other suitable attaching device; but the outer section 3 is adjustable
toward and from the inner section to give the holder which the two sections con-
stitute, the required expansibility and contractability, said holder being expanded in a
direction at right angles with the grooves in the cutters and caused to grasp and hold
the cutters by a movement of the section 3 away from the section 2, and contracted
and caused to release the cutters by a movement of the section 3 toward the
section 2.
The section 3 is adjusted as above described by a bolt e, the inner end of which is
screw threaded and engaged with a threaded socket in the shaft a, so that a rotary
movement of the bolt will give it an end wise movement in or out as the case may be..
The bolt has a shoulder or enlargement 6 within the sleeve 4, which shoulder bears
against the inner end of the hub 5 of the section 3, so that when the bolt is moved
outwardly its shoulder forces the section 3 outwardly and thus expands the cutter
holder. When the bolt e is moved inwardly it permits the section 3 to be moved
toward the section 2 to contract the cutter holder. The bolt has a squared outer end
or head adapted to be engaged by a suitable wrench or tool whereby the bolt is rotated.
represents a sleeve enclosing the sleeve 4 of the section 2 and secured to the
sbaft by the screw g. Said sleeve has lugs i i formed on its outer end, arranged
to support the heels or rear ends of the cutters c c, the sleeve having a slot ; which
permits the adjustment of said lugs to compensate for wear of the cutters.
The top lift rest m has the longer wall or face A' for the tread surface of the top
lift of a heel presented to the cutter, and the shorter wall or face A for the edge of
the top lift. Said rest is attached to a yoke n' which is fitted to slide on a collar or
sleeve n which, in turn, is fitted to slide longitudinally on one of the bearings of the
shaft a, and has a lug o which is tapped to receive a screw p. Said screw is mounted
to rotate without moving endwise in a fixed lug on one of the bearings of the
shaft a, all as shown in Figure 1. The rotation of the said screw p causes it to move
the sleeve n and top lift rest, and thus cause the latter to project more or less over the
top lift end of the cutter head. The yoke n' is adjustable at right angles with the axis
of the cutter, so as to enable the shorter wall A to be adjusted to different sized
cutter heads.
The rests for the side of the heel has a stud t formed on its inner end, which stud
is journaled in a socket or bearing formed in an armi u affixed to the top lift rest m,
the heel rests being thus adapted to swing laterally so that it may be displaced by
contact of the shank of a boot or shoe sole with it, when the shoe is turned to present
the extreme forward end of the heel to the cutter head. To keep the rest s normally
in its operative position, I secure the spring to the arm u in which the stud tis
journaled, and engage the free end of said spring with a slot w in the stud, as shown
in Figures 4 and 5. The spring normally holds the rest & in its operative
position, viz. at right angles with the axis of the cutter, and yields to permit the
rest to be swung away from said position when the shank of the boot or shoe sole
comes in contact with said rest.
a represents the counter guard, which is a saucer shaped disc attached to a stud b'.
Said stud is mounted in a bearing in an arm c¹, which has a shank inserted in a split
sleeve or socket d'. The split sleeve d'is compressed to hold the shank c³ firmly at any
point to which it may be adjusted, by a screw d working in tapped ears d³ d' on said
sleeve, and provided with a lever or handle d. The sleeve d' is formed on a plate d*,
which is adapted to slide at right angles to the axis of the cutter head on a slide e¹,
which is movable in a direction parallel to the axis of the cutter on fixed guides d' d',
and may be adjusted in said direction by a screw d³ so as to move the arm c and the
counter guard carried thereby toward or from the top lift rest. The plate d' has
slots which receive screws einserted in the plate e¹; said slots and screws

page_text: permitting the plate d³ to slide toward and from the cutter head. The sleeve d' has
at its rear end an arm e (Figures 16 and 18) which engages with a grooved nut e*
on a screw stud e affixed to the slide e¹. The rotation of the nut e causes the
sleeve d¹ to move forward or backward as the case may be, thus rendering it possible
to adjust the counter guard forward or backward while the machine is in operation.
At f¹ is shown the rand and heel seat trimmer which is mounted on a shaft g¹
journaled in bearings on the supporting frame, and driven by friction pulleys from
the shaft a, as hereinafter described.
Said rand trimmer is composed of a head h¹ firmly attached to the shaft g' with its
inner end in contact with the collar g' and having a cylindrical periphery, two or
more blades having segmental flanges j¹ formed to fit the periphery of the head,
and a circular guard m' attached by a screw n¹ to the shaft g' and having a marginal
lip which projects slightly over the rand cutting portions of the knives. Each knife
has two oppositely bevelled surfaces, pl o¹, which, at the sharpened end, form
respectively the heel seat trimming edge and the rand trimming edge.
The knives are attached to the head h' by means of pins k¹, which projects from
the periphery of the head and enter orifices in the flanges of the knives.
The orifices in the knife flanges exceed the number of the pius, so that as the
knife becomes worn it can be moved forward by removing it from the pins and re-
engaging it by placing orifices on the pins which before were behind the pins. The
knives are held in engagement with the pins k¹ by a flange s' formed on the collar t¹
which is firmly attached by screws to the head h¹, said flange projecting over the
flanges of the knives, as shown in Figure 13. The flange is tapered internally
and the flanges of the knives are tapered externally so that the guard m' will when
drawn in by the screw n', force the flanges of the knives tightly into the wedge shaped
recess formed between the flange and the head h¹. The heel rest of the rand
trimmer which projects from the lower portion of the hood q¹is similar to that of
the heel trimmer-q¹ represents a hood or shield which is formed to enclose the
rand cutter excepting at its front side, and which is secured by a thumb screw q² to
a flange on the collar 93, said collar being fixed by means of a small screw r¹ to the
bushing n in which the shaft g' turns.
In a modification shown in Figures 19, 20 and 21 the hood q¹ is provided with an
arm p having a slot p. Said arm is clamped by a screw p between ears p' on a
collar pe affixed to a fixed bearing in which the shaft g² rotates, said screw passing
through the slot p. By loosening the screw p the hood g' may be displaced or
swung back away from the rand cutter to permit the free removal and application of
the latter from and to its shaft g'. The heel rest in this case is carried by an arm
projecting from the ring p®.
A represents an exhaust fan blower attached to the supporting frame. To the casing of
said blower is connected a trunk or flue B which has a vertically elongated mouth
located behind and below the heel trimming cutter head; said mouth having at its
lower portion a lip B₁ which projects forward far enough to ensure the entrance
into the trunk B of all the chips and cuttings that fall from the cutter.
Crepresents a tube which connects the casing of the blower with the hood q' of
the rand trimmer, and conducts the cuttings from the rand trimmer to the blower.
Said tube is made of rubber, or other Hexible material, to permit the described
displacement of the hood g'.
The shaft g of the rand trimmer has a grooved friction pulley D. A similar
pulley E is affixed to the shaft a of the heel trimmer. F represents an intermediate
friction pulley having a V-shaped periphery formed to fit the grooved pulleys D E.
Said intermediate pulley is journaled in a yoke H, on which is formed a screw threaded
shank I. Said shank is engaged with a nut J which is supported between arms K K
formed on a horizontal stud L, which is fitted in a socket M on the supporting frame.
By rotating the nut J the yoke H and friction wheel F are raised or lowered as the
case may be, and the said wheel is engaged with or disconnected from the
wheels D. E.
I do not limit myself however to the described frictional connection of the two

page_text: cutter shafts, but may connect the shafts a and g¹ by a belt 6' running on pulleys, as
shown in Figures 22 and 23.
6* represents a yoke formed on a shank or stud 6, which is secured by a set screw b
in a sleeve or socket 6 affixed to the frame or pedestal of the machine. In said yoke
is journaled a shaft 68, which has two emery wheels 69 610 of suitable form to grind the
knives of both cutter heads. Said shaft is driven by a belt 612 from the shaft gof
the rand cutter. The yoke 6 may be adjusted to tighten or loosen the belt by
moving its shank 6' in the socket *.
'
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
I declare that what I claim is :
1. In a heel trimming machine, the combination with the cutters c having grooves
on their inner surfaces arranged substantially at right angles with the axis of rotation
of the cutter head, of an expansible two part holder formed to enter said grooves and
composed of a section secured to a shaft, and a movable section adapted to be moved
or adjusted crosswise of said grooves whereby the holder is enabled to engage the
sides of said grooves, substantially as set forth.
2. In a heel trimming machine, the combination of the shaft a the holder com-
posed of the stationary section 2 secured to said shaft, and the adjustable section 3
fitted to said former section, said section having curved and dovetailed ends, the
screw bearing against the inner end of said adjustable section and forcing the same
outward, and the cutters having in their surfaces dovetail grooves or seats to receive
the ends of said sections, as set forth.
3. In a heel trimming machine, the combination of the shafi a, the holder section 2
having the sleeve 4 attached to the shaft and provided with a recess 7, the adjustable
holder section 3 formed to enter said recess, the bolt e engaged as described with the
shaft and formed to bear against the adjustable section, and the cutters having
internal seats or grooves formed to engage the holder sections, as set forth.
4. In a heel trimming machine, the combination with the rotary cutter, of an arm
or support arranged in front of the axis of the cutter, a rest pivoted at its inner end
to said support and arranged to stand at right angles with the axis of the cutter as a
support for the side of the heel, said rest being adapted by its pivotal connection to
swing out of place and thereby avoid the shank of a boot or shoe sole, and a spring
whereby said rest is normally held in a position at right angles with the axis of the
cutter and permitted to yield and swing from said position, as set forth.
5. In a heel trimming machine, the combination with the cutter head, of the top
lift rest, the sleeve n supporting said rest and adapted to slide on a fixed bearing, and
the screw p journaled in a lug on said bearing and engaged with a tapped socket in a
lug on the sleeve n, as set forth.
6. In a heel trimming machine, the combination with the cutter head and the
rand trimmer, of the exhaust fan blower, the trunk or flue connected with the
blower and having an enlarged mouth provided with a forwardly projecting lip, and
arranged adjacent the cutter head, the hood q', and the pipe C connecting said
hood with the blower casing, substantially as set forth.
7. In a heel trimming machine, the combination with the exhaust fan blower,
of the hood g¹ having the slotted arm p³, screw and clamping devices for said hood,
and the flexible tube connecting said hood and blower, substantially as set forth.
8. The combination of the cutter shaft a, having the friction wheel E, the rand
trimmer shaft g', having the friction wheel D, the intermediate friction wheel F,
and means for adjusting said intermediate wheel whereby it may be operatively
engaged with or disconnected from the wheels D E, as set forth.
9. The combination with the shafts a g¹ and their grooved friction wheels E, D,
of the intermediate friction wheel F, the yoke H, supporting the journals of said
wheel, the nut. J engaged with a screw threaded portion of said yoke, and a fixed
support for said nut, all arranged and operating substantially as described..
10. In a heel trimming machine, the rand trimmer composed of the cylindrical

page_text: head having pins, the knives having segmental flanges
formed to fit the
head and provided with orifices to receive the pins ¹, said orifices exceeding
the pins in number, the flange secured to the head as a means for keeping the
knives in engagement with the pins, and the circular guard m¹ detachably secured
to the shaft of the trimmer and serving to hold the rand trimmer on said shaft, as
set forth.
11. In a heel trimming machine, the combination with the cutter-head, of the
counter guard having an arm c', and shank &, the clamping sleeve d' receiving
said shank and having an arm e, the plate d having slots therein, the slide e', the
screw secured in said slide, the fixed screw *, and the nut on said screw engaging
said arm e*, substantially as set forth.
Dated this Seventeenth day of June 1889.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.