A New or Improved Lift Knife for Cutting or Punching Leather or other Stiff Material.
Year: 1898

page_text: Date of Application, 1st June, 1898
Complete Specification Left, 27th Feb., 1899-Accepted, 1st June, 1899
PROVIDIUNAL DITUITICATION.
A New or Improved Lift Knife for Cutting or Punching Leather or
other Stiff Material.
SOLOMON BENNETT, of 117, Richmond Road, Dalston, in the County of London,
England, do hereby declare the nature of this invention to be as follows:-
My invention relates to a new or improved twin knife or punch for cutting or
punching out of a leather sheet for instance, two concentric pieces of the same or of
à different shape according to the use which is to be made of these pieces. By
way of illustration I will assume that the shape of the pieces to be cut out of a
leather sheet is that of a boot heel lift. The knife or punch consists then of two
strips of steel of suitable width and unequal length placed on edge, vertically and
concentrically one within the other, the lowermost edges of these strips being set
and sharpened and forming the cutting edges of the punch or knife. The upper
end of these strips is connected to or formed integrally with a top of metal or
other suitable material whereby they can be secured in the press for punching
purposes. These strips are coiled to the shape required both being parallel when
the strips have to be of the same shape and the opposite ends are rivetted, welded
or brazed together in the usual manner. Or each strip may consist of two or more
short strips rivetted or welded together in any suitable manner.
Dated this lot dov of Tuna 1808
DE KATOW & Co.,
Agents for the Applicant.
A New or Improved Lift Knife for Cutting or Punching Leather or
other Stiff Material.
SOLOMON BENNETT, of 117, Richmond Road, Dalston, in the County of London,
England, Gentleman, 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 a new or improved twin lift knife or punch to be used
in connection with my improved form of boot heel such as described in the Speci-
fication of my Letters Patent No. 10296 dated the 5th day of May 1898, this knife
or punch being shown in the accompanying drawings wherein Fig. 1 is a plan
and Fig. 3 a cross section on line AA of Fig. 1 of the same. Fig. 2 is a plan
view of the cutting edges of this twin knife, while Fig. 4 shows a plan of the car-
rier or holder for the central and smaller lift knife or punch and a vertical cross
section of the same.

page_text: My improved twin lift knife or punch consists of three parts, the outer lift knife
or punch a, the inner lift knife or punch and the carrier or holder s. The latter
is provided at both sides with lugs which fit in corresponding notches
formed in the upper edge of the outer lift knife or punch a and may in some cases
be secured to the latter by screws, being perforated at for this purpose. This
carrier pieces has a central opening which allows of the insertion of the inner
lift knife which being bevelled at the top is suspended and firmly wedged in
position so that the whole knife or punch can be now placed in the press over the
sheet of leather required to be cut up and when pressure has been applied a leather
piece containing a cut out inner piece both of the configuration represented by
the plan of the cutting edges of the punch shown in Fig. 2 is punched out of the
leather sheet aforesaid..
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:
1. In lift knives or punches for boot and shoe heels, the combination with an
outer lift knife or punch of an inner lift knife or punch suspended within the
former and of a holder or carrier wherein the latter knife or punch is tightly
wedged in position, substantially as set forth.
2. The carrier or holder having two lugs secured in corresponding notches formed
in the upper edge of the outer lift knife, substantially as shown and for the pur-
pose specified.
T
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