AN IMPROVED TOOL, COMBINING A CIRCULAR SAW, A FRET SAW AND A DRILL
Year: 1884

page_text: and a Drill.
We THOMAS MAYHEW BEAR of Colchester in the County of Essex Manufac-
turer; and HARRY RANSOM of Coggeshall in the County of Essex, Cabinet Maker
do hereby declare the nature of our said invention for "AN IMPROVED TOOL,
COMBINING A CIRCULAR SAW, A FRET SAW AND A DRILL". to be as follows:-
On a suitable frame we mount a table of any desired size and shape, and in the
frame we mount in suitable bearings three shafts; the centre one is the primary
one and it receives its motion from a treadle, pivotted to the frame, with con-
necting rods and cranks which are preferably placed outside the frame. On this
shaft is fixed a large spur wheel say of 24 inches diameter on the pitch line.
On the lower shaft is fixed a spur pinion of say 3 inches diameter, gearing with
the spur wheel on the primary shaft; on this lower shaft is also fixed a heavy
fly wheel. On the top shaft is another small pinion of say 2 inches diameter,
gearing with the spur wheel on the primary shaft. On one end of this shaft at
or about the centre of the table is a circular saw fixed in any approved manner;
the other end of the saw spindle is recessed or otherwise arranged to receive the
stem of a drill. Immediately under this end of the shaft is arranged a small
horizontal table adjustable vertically on which to rest the work to be drilled
or bored.
To support the upper end of the fret saw an arm may be fixed to the table, or
a bracket may be made to hang from any suitable position on a wall or ceiling
over the saw when the tool is fixed in place. The reciprocations of the saw are
obtained from a cam fixed on to the end of the shaft which carries the circular
saw, which is removed for the purpose, thus leaving the table clear for any length
of work.
In a machine constructed as we have hereinbefore described we attain a maxium
amount of work with a minimum expenditure of power, in fact so efficient is the
machine that it will run empty when once started for over eight minutes, the
advantage of which in a treadle machine must be obvious as the operator is not
bound to be continuously pedalling to keep the machine under weigh.
We do not bind ourselves to any given size for the spur wheel, but we always
use a smaller pinion on the saw spindle than on the shaft carrying the fly wheel by
which we obtain greater efficiency.
ber 1884.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer & Patent. Agent,
Royal Courts Chambers,
70, 71, & 72, Chancery Lane, London, W.C.,
Agent for the Applicants.

page_text: An Improved Tool, Combining a Circular Saw, a
Fret
and a Drill.
Saw,
We THOMAS MAYHEW BEAR of Colchester in the County of Essex Manufacturer,
and HARRY RANSOM of Coggeshall in the County of Essex, Cabinet Maker, do
hereby declare the nature of my said invention for "AN IMPROVED TOOL COM-
BINING A CIRCULAR SAW, A FRET SAW, AND A DRILL," and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :---
On the
On a suitable frame we mount a table of any desired size and shape, and in the
frame we mount in suitable bearings three shafts; the centre one is the primary
one and receives its motion from a treadle, pivotted to the frame with connecting
rods and cranks which are preferably placed outside the frame. On this shaft
is fixed a large spur wheel say of 24 inches diameter on the pitch line.
lower shaft is fixed a spur pinion of say 3 inches diameter, gearing with the
spur wheel on the primary shaft; on this lower shaft is also fixed a heavy fly
wheel. On the top shaft is another small pinion of say 2 inches diameter,
gearing with the spur wheel on the primary shaft. On one end of this shaft at
or about the centre of the table is a circular saw fixed in any approved manner;
the other end of the saw spindle is recessed or otherwise arranged to receive the
stem of a drill. Immediately under this end of the shaft is arranged a small
horizontal table, adjustable vertically on which to rest the work to be drilled
or bored.
To support the upper end of the fret saw an arm may be fixed to the table or
a bracket may be made to hang from any suitable position on a wall or ceiling
over the saw when the tool is fixed in place. The reciprocations of the saw are
obtained from a cam fixed on to the end of a shaft which carries the circular
saw, which is removed for the purpose thus leaving the table clear for any length
of work.
In a machine constructed as we have herein before described we attain a maximum
amount of work with a minimum expenditure of power, in fact so efficient is the
machine that it will run empty when once started for over eight minutes, the
advantage of which in a treadle machine must be obvious as the operator is not
bound to be continuously pedalling to keep the machine under weigh.
We do not bind ourselves to any given sizes for the spur wheel, but we always
use a smaller pinion on the saw spindle than on the shaft carrying the fly wheel,
by which we obtain greater efficiency.
In order that our invention may be fully understood we will more particularly
describe it with the aid of the accompanying drawings in which similar parts are
marked with like letters of reference.
Fig. 1 is a front elevation and Fig. 2 a side elevation of our improved tool
showing the novel features of the same, many of the parts which present no
novelty being omitted for the sake of clearness.
Referring to the drawings A designates the table mounted on the frame B.
C is the primary shaft which receives its motion from a treadle D pivotted to the

page_text: frame B through the connecting rods E E and cranks F F. On this shaft is fixed
the large spur wheel G. H designates the lower shaft on which is fixed a small
spur pinion J gearing with the spur wheel G. K designates the fly wheel fixed on
the shaft H. L. designates the top shaft on which is fixed a small spur pinion M
gearing with the spur wheel G. N designates the circular saw and O the drill
both mounted on the shaft L. P designates the adjustable table for the drilling or
boring work.
When a fret saw is used the circular saw N is removed and a cam is fitted in
its place. The fret saw is suspended from any suitable position and receives its
reciprocations from the cam on the top shaft.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
First. An improved tool combining a circular saw, a fret saw, and a drill,
constructed arranged and operating as herein before described and shown.
Secondly. In a circular saw, a fret saw, or a drill or in any of these tools in
combination, the construction and arrangement of the driving gear as and for the
purpose hereinbefore described and shown.
Thirdly. A treadle driving gear consisting essentially of the treadle D con-
nected to the primary shaft C by cranks F and rods E, the shaft H. driven by spur
gearing from the primary shaft C at an increased speed and carrying the fly
wheel K, and the shaft L driven by spur gearing from the primary shaft C also
at an increased speed, all combined and operating as and for the purpose herein-
before described and shown by Figs. 1 and 2 of the accompanying drawings.
נופ.. ו..
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43
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer & Patent Agent,
Royal Courts Chambers,
70, 71 & 72, Chancery Lane, London, W.C.,
Agent for the Applicants.
August 1985.
Dated this 201
this 22nd day
August 1985.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer & Patent Agent,
Royal Courts Chambers,
70, 71 & 72, Chancery Lane, London, W.C.,
Agent for the Applicants.