IMPROVEMENTS IN EDGE-SETTING AND OTHER CUTTING TOOLS FOR TRIMMING BOOTS AND SHOES, AND IN BURNISHERS FOR FINISHING THE TRIMMED EDGES
Year: 1885

page_text: "
I SOCRATES KEATS of Eisenbahn Strasse N° 1, II Etage, in the town of Leipzig,
Germany, Mechanical Engineer do hereby declare the nature of my invention for
"IMPROVEMENTS IN EDGE-SETTING AND OTHER CUTTING TOOLS FOR TRIMMING
BOOTS AND SHOES, AND IN BURNISHERS FOR FINISHING THE TRIMMED EDGES," to
be as follows:-
This invention relates to improvements upon a Patent granted to John Keats for
machinery for trimming and burnishing the soles and heels of boots and shoes,
dated 22nd November 1882 No: 5557.
My improvements have a two fold character: First to adapt the tool, whether a
cutter or a burnisher, to operate upon different widths of surfaces, by making the
width of the tool adjustable to suit the work in hand and thus to avoid the
necessity of employing tools of various widths; Secondly to provide the rotary
cutters with detachable cutting blades which shall operate like the blades of a
plane in contradistinction to that of a scraper. The rotary cutter described in the
specification of the above mentioned Patent was fitted with detachable blades which
were inserted in radial grooves formed in a metal cylinder and were held in place
by end clamps.
I now propose to form my rotary cutters with detachable blades set tangentially
in grooves cut through a ring flange projecting from one end of a hub. The blades
will be flat plates of steel slotted to receive clamping screws and held fast in place
in the tangential slots of the ring flange by the tightening up of these screws.
When a chamfer cut is required the periphery of the cutter blank will be reduced
so as to form a projecting inclined side at the edge of the flange, and the cutter
blades will be formed to correspond to this change of profile of the blank. To
provide for a variable width of cut I fit over the cutter blank a sliding cylinder in
which I make some two or more dove tail grooves parallel with the axis of the
cylinder to receive adjustable turning tools, the edges of which will project from
the end of the cylinder and serve to give the second chamfering cut. This cylinder

page_text: I make fast to the cutter on which it slides by means of a loose key inserted in
corresponding grooves in the cutter blank and its covering piece, and held fast by
a clamping screw. On slackening this screw the cylinder is free to slide to effect
the adjustment required, and when the screw is tightened up the adjustment will
be firmly maintained.
This principle of adjustment I apply also to burnishers, instead of using as
contemplated in the before mentioned Patent, different sizes of burnishing tools for
different thicknesses of work. The tool which will be carried by a holder as
heretofore I form with two.shoulders having between them a maximum breadth of
burnishing surface, and to this tool I hinge an adjustable piece formed with a cross
piece which serves with one shoulder of the burnishing tool to embrace the sole
under operation. This hinged piece I adjust in position by a stop screw at its rear
carried by the rear shoulder of the burnisher, and by screw pressure applied to the
squared head of the hinged piece. I am thus enabled to contract the burnishing
surface or enlarge it at pleasure precisely in the same manner as I can enlarge or
contract the paring surface of the cutting tool.

page_text: "
the Trimmed Edges.
I SOCRATES KEATS of Eisenbahn Strasse No 1, II Etage, in the town of Leipzig,
Germany, Mechanical 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 improvements upon a Patent granted to John Keats
for machinery for trimming and burnishing the soles and heels of boots and shoes
dated 22nd November 1882 N° 5557.
My improvements have a two-fold character, 1st to adapt the tool, whether a
sole edge setter or a burnisher, to operate upon different widths of surfaces, by
making the width of the operating surface of the tool adjustable to suit the work
in hand, and thus to avoid the necessity of employing tools of various widths.
Secondly, to provide the rotary circular tool holders, whether designed for sole
edge setting or heel paring, with detachable cutting blades, which shall operate
like the blades of a plane, in contradistinction to that of a scraper.-The rotary
cutters described in the specification of the above mentioned Patent were fitted
with detachable blades, which were inserted in radial grooves formed in a metal
cylinder, and were held in place by end clamps.
I now propose to form my rotary cutters with detachable blades set tangentially
in slots cut through a ring flange which projects from one end of a hub.
The blades at their cutting edges will take the profile of the work they are
respectively required to perform, and they will be so fitted into the slots as to leave
a throat or clear way for the passage inwards of the shavings of leather which
they are intended to make.-These cutters I secure to their holders by clamping
screws which pass through elongated slots made in the cutters to perinit of their
adjustment.
In the accompanying drawings,
Fig. 1 shews in side elevation a compound cutting tool which is used for
trimming the edges of soles, and commonly known as Edge-setting, such tool being
carried by a spindle mounted on the end of a rotary shaft having its bearings in
the main framing,-the adjustable guard or guide for protecting the upper of the
boot or shoe being shewn in place.
Fig. 2 is an end view of the same parts.
Fig. 3 is a detached view of the compound edge setting cutter.
Fig. 4 is an inner end view; and
Fig. 5 is an outer end view of the same.-This tool is composed of two concentric
holders, one fitting over the other, and adjustable so as to vary the width of cut
according to the thickness of the sole to be operated upon.
Figs. 6 and 7 shew the two parts of the cutter detached from each other, and
drawn in cross section; and
Figs. 64 and 7a shew one of the blades detached from their respective holders.

page_text: A, Fig. 1, is the spindle on which the tool is mounted.-B and C are the two
parts of which the tool is composed. The part B is fitted with blades b which
make the square cut of the sole edge, and also take off the burr on the inner or
upper angle of the sole, and the part C is fitted with cutters c for taking off the
burr on the outer or lower angle of the sole.
The holder B, which is screwed onto the end of the spindle A, consists of a
hollow cylinder with one closed and one open end, such cylinder having parallel
slots cut in it from the open to the closed part, for the purpose of forming throats
for the insertion of the blades b.-This holder is formed with a vertical annular
flange b on its inner end, which is intended to enter the crease of the boot or shoe,
and act as a guide for facilitating the manipulation of the boot.
By reference to Fig. 4 it will be seen that the holder B is fitted with four
cutters, the cutting edges of which are ground so as to form a chamfering edge
at right angles to the main cutting or paring edge, as shewn in the detached views
Figs. Ga These chamfering edges stand up within the divided flange b', and
entering the crease of the boot, they act upon the adjacent edge of the sole, and
trim off the burr therefrom. The cutters b are made fast in their holder by
clamping screws b².
The stem of the holder B carries the holder C, and keyways are formed in both
the spindle and the holder to receive a loose key c¹, which is locked by a binding
screw passed through the holder C. By this arrangement the adjustment of the
holder C relatively to the holder B is effected and secured.-The holder C, it will
be seen, carries two cutters c, which are inserted in spaces cut in the periphery of
the holder, and are beld in place by clamping screws. These cutters are intended
to take off the burr from the outer or lower angle of the sole, and for this purpose
they are shaped as is best shewn in the detached views Figs. 7.
It will now be understood that this compound tool, before being used, must be
adjusted to suit the thickness of the sole to be operated upon, as otherwise the
burr of one angle only of the sole edge would be removed by its action.
In some cases it is not necessary to cut a chamfer on both the upper and lower
angles of the sole. Under these circumstances I substitute for the adjustable
cutter holder C, the gauge D, shewn in place, and in central section at Fig. 8, and
in back view at Fig. 9.-This is also adjustable like the holder C upon the stem of
the holder B, to suit the thickness of sole to be operated upon.
E, Fig. 1, is a stationary guide carried by a bracket bolted upon the main framing,
and adjustable in a nearly vertical direction.-This guide E serves as a guard to
protect the upper from injury, and as a guiding edge in moving the work over the
cutter.
Fig. 10 shews my improved heel paring cutting tool mounted in place upon the
spindle A and ready for action; and
Fig. 11 is an end view of the same parts of the machine.
Fig. 12 is a longitudinal section of the heel paring tool detached; and
Fig. 13 is a view of the inner end of the tool.
F is the tool holder turned to correspond to the profile of the heel to be cut, and
slotted longitudinally from end to end to receive the tangential cutting blades f.
This holder, like the holder B, is formed with an annular flange f¹ to enter the
crease of the boot or shoe, and form a guide for the workman in presenting the boot
to the cutter.
Figs. 14 shew one of the tangential blades f. detached from its holder.-This
blade, it will be seen, has a cutting edge corresponding to the profile of the holder,
and it is so shaped at its extremity, like the blades b, as to provide a cutting edge
for removing tlie burr from the face of the heel.
The tangential blades f lie in the longitudinal slots, and are secured to their
holder by clamping screws 2 passed through the blades f from within the holder.―
The adjustable guage E in this case is fixed outside the paring tool, and against it
the heel of the boot rests, wlien presented to the cutting tool. This gauge is also

page_text: adjustable, as in the preceding example, and is carried by a bracket projecting from
the main framing.
I will now describe my improvements in the burnishing tool. In the patent
above referred to, the holder contained three burnishers, two of which were used
to support the acting burnisher in position, and were exchangeable therefor at
pleasure. These burnishers, which were intended to resist the back pressure of the
acting burnisher, bore diagonally upon the back end thereof, and were sustained
in position by means of a pressure spring.-I now propose to hold them in position
by means of adjustable screws tapped into the tool holder, and bearing on pro-
jecting pins of the inclined burnisher. I also propose to adjust the length of the
burnishing surface to suit the thickness of the sole to be acted upon, and thereby
to keep the burnisher clear of the upper.
Fig. 15 shews the burnishing tool in side elevation, as applied to the machine,
and
Fig. 16 a front view of the same.
Figs. 17 show the burnishing tool detached from its holder, in side and front
elevation. The holder consists of a hinged box G secured to the spindle A, which
in this case receives a reciprocating axial motion instead of a continuous rotary
motion.gg are the burnishers, to the acting one of which is hinged a gauge
pin gl, which embraces the burnisher, and is advanced over it to shorten its acting
surface by means of a screw stop g² fitted into a threaded lug carried by the tool.
holder. g³ are pressure screws fitted into threaded lugs projecting from the lid
of the box, and bearing upon pins that project from the inclined burnishers
that form the rest for the acting burnisher.-In presenting the boot or shoe sole
to this tool, the face of the sole is pressed against the guard 91, which being
suitably adjusted by means of the screw stop g³, will prevent the burnisher from
extending beyond the crease and marking the upper leather.-As the pressure
screws g³ will not yield to the back pressure of the acting tool, the efficiency of
that tool will be materially increased.
When changing the burnishers, as contemplated in the above named patent, it
will only be necessary to disconnect the gauge piece g¹ from the acting burnisher by
the removal of the hinged pin, and apply the same, if required, to the burnisher
which is to change places with the acting burnisher.
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
1st Constructing rotary cutting tools for edge setting as described with reference
to the drawings.
2nd The compound cutting tool which permits of the adjusting the width of the
cut as described with reference to Figs. 3, and 5.
3rd The application to the rotary cutting tools of the adjustable gauge D, as
described with reference to Figs. 8 and 9.
4th The construction of heel paring tool as described with reference to Figs. 12,
13 and 14.
5th The improved burnishing tool and holder, as described with reference to
Figs. 15, 16 and 17.
Dated this 2nd day of Novamban 1080x
NEWTON & SON,
Agents for the Applicant.