Improvements in Rotary Cutters for Paring the Heels of Boots and Shoes.
Year: 1892

page_text: Date of Application, 23rd July, 1892
Complete Specification Left, 24th Apr., 1893-Accepted, 27th May, 1893
PROVISIONAL. SPECIFICATION.
Improvements in Rotary Cutters for Paring the Heels of Boots
and Shoes.
I, HENRY ALFRED OLDERSHAW of No. 38 Highcross Street Leicester in the
County of Leicester Engineer, do hereby declare the nature of this invention to
be as follows:-
kick "
This invention relates to improvements in rotary cutters for paring the heels of
boots and shoes and consists in the means or method of attaching or locking the
segments or series of cutter blades firmly in position, so that they do not
or the narrow ends thereof shift like those secured by a nut or pin passing through
lug on the extreme end of the wide part of such segment as is now the case.
By my invention the segments are made that the outer surface conforms to the
shape of the heel as usual. And the lug is put a little out of the centre on the
underside of the wide or convexed part of the knife, the bottom of the lug being
hollowed to fit upon a collar of the back portion or bush of the cutter, the outer
face of each lug is tapered and projects so that when it is desired to fit the segments
upon projecting pins in the bush or back portion keyed on the rotative shaft they
are firmly secured in the desired position by a tapered washer, cap, or clip-the
inclined face of which corresponds with the inclined face of the lugs, and is pressed
by a screw nut, which when screwed upon the left hand threaded end of the
rotating shaft causes each segment to be drawn down towards the shaft, without
displacing the knife blades or cutters.
By making the lug more in the centre of the knife and locking it in the manner
described the cutters are brought directly in the line of force besides being greatly
strengthened. The rotating shaft is driven by ordinary means, and very fast. The
said means of attaching and locking such tools may be applied to any construction
of paring machine having a top rotating shaft.
Dated this 20th day of July 1892.
WILLIAM BESTWICK MAXFIELD,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Rotary Cutters for Paring the Heels of Boots
and Shoes.
I, HENRY ALFRED OLDERSHAW of No. 38 Highcross Street Leicester in the
County of Leicester 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:—
66
This invention relates to improvements in rotary cutters for paring the heels of
boots and shoes and consists in the means or method of attaching or locking the
segments or series of cutter blades firmly in position, so that they do not kick,"
or the narrow ends thereof shift like those secured by a nut or pin passing through
lug on the extreme end of the wide part of each segment as is now the case.
That my invention may be clearly understood I have attached a sheet of
drawings in which :
Figure 1 is a side elevation of the rotary cutters as secured upon the shaft of
the machine. And
Figure 2 a back plan view of the cutters as arranged upon the shaft according
to this invention.

page_text: To carry out my invention the segments are made so that the outer surface
conforms to the shape of the heel as usual. And the lug is put a little out of the
centre on the underside of the wide or convexed part of the knife, A, the bottom
of the lug being hollowed a', to fit upon a collar a, of the back portion or bush a³,
of the cutter the outer face of each lug is tapered or conical at B and projects so
that when it is desired to fit the segments upon the projecting pins in the bush or
back portion keyed on the rotative shaft C, they are firmly secured in the desired
position by a tapered washer, cap, or clip D, the inclined face d of which
corresponds with the inclined face B of the lugs and is pressed home by the screw
nut E. When screwed upon the left hand threaded end e of the rotating shaft C
each segment is caused to be drawn down towards the shaft without displacing the
knife blades or cutters.
By making the lug more in the centre of the knife and locking it in the manner
described and illustrated the cutters F are brought directly in the line of force
besides being greatly strengthened.
The rotative shaft C is driven by ordinary means and very fast, as is well known
in this class of heel paring machines; and this invention of fixing and locking such
cutters in position can be applied to any construction of paring machine having a
top rotating shaft without departing from my invention.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.
1. In rotary cutter blades of the character described the employment of conical
lugs clipped by a conical washer, substantially as described.
2. To facilitate the fixing and adjustment of the knives upon the pegs in the
bush or back portion of the cutters so that they can be drawn down to the shaft,
the combination of a conical lug and washer with the collar a², and screw nut E,
arranged substantially as and for the purpose hereinbefore described.
3. Improvements in rotary cutters for paring the heels of boots and shoes,
substantially as set forth.
Dated this 21st day of April 1893.
WILLIAM BESTWICK MAXFIELD,
"The Central" Office for Inventions,
19, Bowling Green Street, Leicester, Applicant's Agent.