Improvements in Tools for Toothing Saws or other Implements Requiring Toothed or Serrated Edges.
Year: 1898

page_text: Improvements in Tools for Toothing Saws or other Implements
Requiring Toothed or Serrated Edges.
HENRY SMITH, 103, Artisan View, Heeley, City of Sheffield, do hereby declare
the nature of this invention to be as follows:
.
This invention has for its object to provide a method whereby a number of
teeth may be produced in saws & the like at one stroke or operation, either by
hand or power.
To accomplish this & also to reduce the cost of upkeep in the tools employed,
I make the cutting or working parts which produce the tooth or teeth required,
each independent of the other, by using as many parts or segments in the con-
struction of the tool as there are teeth required in the operation, i.e. if 20 teeth
are required in six inches, I employ as many pieces of steel of required thickness
&c. shaped at the nose or cutting point (hardened & tempered) to produce the
necessary form or shape of tooth required. These segments or cutters are secured
in a strong metal box, by means of a metal plate & screws.
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Both the top tool box or punch" & the bottom tool box or bed" are built
up of independent or separate tools in the same way, in order that if one of
said tools break, or become damaged in working, it may be taken out & a counter-
part put in to take its place at a trifling cost.
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The top tool box or punch" is secured in the ram of a punching, or other
suitable machine, & the bottom tool box or "bed" is secured in position on
the table of said machine. When the material to be toothed or pierced is placed
in position on the "bed," the top tool or punch" is brought down by hand,
or power, to engage the tools secured in the "bed." When the "punch" is
raised the operation is complete, the number of teeth in the work corresponding
with the number of cutters employed.
COMPLETE SPECIFICATION.
Improvements in Tools for Toothing Saws or other Implements
Requiring Toothed or Serrated Edges.
I, HENRY SMITH, of 103, Artizan View, Heeley, Sheffield, in the County of
Tork, Engineer, do hereby declare the nature of my said invention and in what
Price 8d 1

page_text: manner the same is to be performed to be particularly described and ascertained
in and by the following statement:-
This invention has for its object to provide a method whereby a number of
teeth may be produced in saws and the like at one stroke or operation, either
by hand or power.
To accomplish this and also to reduce the cost of upkeep in the tools employed,
I make the cutting or working parts which produce the tooth or teeth required,
each independent of the other by using as many parts or segments in the con-
struction of the punching or cutting tool, as there are teeth required in the
operation, i.e. if 20 teeth are required in six inches, I employ as many pieces
of steel of required thickness, etc. shaped at the nose or cutting point (hardened
and tempered) to produce the necessary form or shape of tooth required.
Both the top tool box or
and the bottom tool box or
"bed" are
built up of independent or separate tools in the same way, in order that if one
of the said tools break, or become damaged in working, it may be taken out and
a counterpart put in to take its place at a trifling cost.
"punch
As the principle of my invention will be the same whether it is employed in
forming the teeth in a saw, toothed cutter, or like implement, a description of
it as applied in the manufacture of single or double toothed cutters, such as the
interchangeable bits used in stone masons chisels, will suffice.
The nature of my invention will be better understood on reference to the
accompanying sheet of drawings, in which,
Fig. 1, represents a double toothed cutter, produced by my improved tools.
Fig. 2, is a front elevation of the top tool box or punch.
Fig. 3, is a side elevation of the same.
Fig. 4, is a plan looking on the face or cutting edge of the top tools, segmental
cutters or punches.
Fig. 5, is a side view of one of the segmental cutters or punches, and,
Fig. 6, is a plan of the same.
Fig. 7, is a plan of the bottom tool box or bed.
Fig. 8, is a side view of the same.
Fig. 9, is a front view, turned upside down.
Fig. 10, is a side view of one of the bottom tools, segmental cutters or dies.
Fig. 11, is a plan of the same.
The same letters refer to similar parts throughout the several views.
In the top tool, the segments or cutters, A, A, are secured in a strong metal
box, B, by means of a metal keep plate, C, and screws, D, D, they are likewise
secured side ways, by means of the set screws, E, E, and packings, F, F.
The bottom tool box or bed, G, has the complementary segmental cutters or
dies, H, secured by the keep plate, I, and set screws, J, J, and they are likewise
secured sideways by the set screws, KK, and packings, L, L. The box or bed
is also provided with two set screws, M, M, and a packing plate, N, by which
the said dies may be adjusted end ways.
"
"
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The top tool box or punch is secured in the ram of a punching or other
suitable machine, and the bottom tool box or bed" is secured in position on
the table or bed of the said machine.
6
When the material to be toothed or pierced is placed in position on the "bed,"
the top tool or punch" is brought down by hand or power, to engage the tools
secured in the "bed." When the "punch" is raised the operation is complete,
the number of teeth in the work corresponding with the number of cutters
employed.
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 tools for toothing saws or other implements requiring toothed or serrated

page_text: edges, the arrangement and combination of parts and appliances comprising a
top tool box or punch, and a bottom tool box or bed, both constructed with a
number of separate and independent cutting or working parts, secured together in
their respective boxes, so as to produce at one stroke the number, form and shape
of teeth required, in the manner and for the purposes substantially as herein
described and illustrated.
Doted this 7th day of Fahmia 1900
R. HEBER RADFORD,
Agent for the Applicant.