Improvements in Upright Sawing Machines.
Year: 1891

page_text: Date of Application, 4th Dec., 1891
Complete Specification Left, 3rd Oct., 1892-Accepted, 26th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in Upright Sawing Machines.
We JAMES MCHARDY of Fairfax House Chiswick Scientific Expert and
WALKER GEORGE DE FORGÉS GARLAND of East Molesey, Manufacturer do
hereby declare the nature of this invention to be as follows:-
This invention, which relates to improvements in upright saws, consists, mainly,
in the use of white metal, or other easily fused metal for bearings.
A plunger is provided,. so shaped as not to turn in its bearings, and upon it a
stud is fixed, or a joint formed capable of contracting motion from any suitable
crank or cam by means of a connecting-rod, or its equivalent.
This said plunger (or a mandrel similar to it) may be placed in the working
position in which it passes through apertures in wooden, or other parts capable of
containing the bearings-the metal may then be poured into the said apertures,
and the bearings will be formed without further trouble.
Any suitable saw may be fixed in the said plunger in any way convenient, but
we prefer to provide a metal jacket on the end of the plunger, so constructed as
to surround it, and to be, at the same time capable of including the end of the saw.
The said jacket is provided with a key or pinch screw which on being tightened,
retains the saw in the position to which it is adjusted.
The said saw may be made to pass up through a suitable table, and work without
any top-gear, the crank-action driving it up and down like hand-sawing reversed,
but we may also provide a supplimentary bracket, by which means it will become
possible to use any kind of fret-saw in the machine.
A single upright will be made capable of carrying all the parts necessary,
vic.; the slide-bearings, the table, and the bolt and nut for fixing it to the bed of
a lathe; or it may be cramped to any table or bench and provided with foot or
hand driving-gear.
Dated this 20th dow of Nb 1001
JAMES MCHARDY.
WALKER GEORGE DE FORGÉS GARLAND.
COMPLETE SPECIFICATION.
Improvements in Upright Sawing Machines.
JAMES MCHARDY of Fairfax House Chiswick Middlesex, Scientific Expert
and WALKER GEORGE DE FORGES GARLAND of East Molesey Surrey
Manufacturer 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 which relates to improvements in upright sawing machines is
described as follows;
A suitable single upright is provided with a table, bearing cases or blocks
cramps or screws for fixing and any other desirable accessory gear. The bearing
cases or blocks are suitably prepared to receive white-metal (or its equivalent) in
its molten state and retain it when cool. A plunger so shaped as not to admit of
turning, is provided with a stud or joint capable of contracting motion from any
suitable crank or cam by means of a connecting rod or its equivalent.
This said plunger (or its equivalent) is adjusted in the bearing cases or blocks
in its working position. White metal (or its equivalent) is then poured into the
said bearing-cases or blocks and the bearings are formed without further trouble.

page_text: Any suitable saw may be fixed to the upper end of the plunger in any convenient
manner.
The saw may work without any top gear, or a supplimentary frame may be
added so that any kind of fret-saw may be used in the machine.
In the accompanying drawings
Fig. I. represents a side elevation of the machine, the dotted lines showing a
frame for the fret-saw combination.
a-A single upright capable of receiving all the parts.
b A table as herein described.
cd-Bearing-cases or blocks capable of receiving the molten metal to form the
bearings.
ef The plunger sliding-not turning-in the bearings and carrying the saw as
suggested.
9-A stud or joint engaging
h-a connecting rod driving the plunger by its connection with
i-a crank, actuated in suitable manner.
any
j-Part of the bolt for fixing the machine in position.
k. l. m. Frame, (dotted lines) with necessary parts, which may be added to
carry out the fret-saw-combination.
n A bearing with plunger &c. necessary to k. l. m.
y-A clip for attaching saw to plunger at n.
Fig. II. Bearing & bearing case in section.
cd The case or block.
e-
-The plunger or core placed in position to receive
-the soft metal which forms the bearing.
N.B. We are aware that plungers similar to ours are already in use but not
working in similar bearings upon an upright sawing-machine. The plunger to
which we lay claim may therefore be square angular or feathered in any way
provided that we can cast the bearing upon it or upon a core-mandrel similar to
it and so prepare it for work without further trouble.. The said plunger may
retain the saw in any suitable manner and is provided with a pin as herein-setforth
to actuate it by means of a connecting rod.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is ;
1. The plunger particularly herein described.
2. The bearings (as described) produced by pouring the metal, in upon the
plunger (or its equivalent) in the working position.
3. The combination of an upright sawing machine (without a frame above the
saw), with a frame capable of converting it into a fret-sawing machine.
Dated' this 4th day of September 1892.
JAMES MCHARDY.
WALKER GEORGE DE FORGÉS GARLAND!