Improvements in Saw Frames.
Year: 1895

page_text: Date of Application, 15th May, 1895
Complete Specification Left, 14th Feb., 1896-Accepted, 14th Mar., 1896
Improvements in Saw Frames.
I, BENJAMIN HODGES, of Loscombe, West End, Christchurch, in the County
of Hants, Engineer, do hereby declare the nature of this invention to be as
follows:-
:~
This invention relates to improvements in saw frames for fret and like saws and
has for object to provide a saw frame which can be readily clamped to a lathe
and which is adapted to be actuated from the face plate or other attachment of
the same.
According to my invention in constructing the saw frame I provide an upright
slotted main frame of metal which is furnished with an adjustable arm at the top
and at the bottom and with lugs or ears for clamping the frame to the bed of a
lathe. I also provide a second frame adapted to slide in the slot in the main frame
and provided with a guide rod at the top and at the bottom, which guide rods pass
through and slide in holes made in the ends of the before mentioned adjustable
arms. This sliding frame carries the saw and is provided behind the main frame
with a slotted yoke or cross-bar into the slot of which a pin on the face plate of
the lathe enters and imparts a reciprocating motion to the sliding frame when the
face plate is revolved in the usual manner.
It is obvious that my improved saw frame can be clamped to a bench or the like
and actuated by a crank cr in any other suitable manner.
Dated this 15th day of May 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
Improvements in Saw Frames.
I, BENJAMIN HODGES, of Loscombe, West End, Christchurch, in the County
of Hants, 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:―
This invention relates to improvements in saw-frames for fret and like saws and
has for object to provide a saw-frame which can be readily clamped to a lathe
and which is adapted to be actuated from the face plate or other attachment of
the same.
According to my invention in constructing the saw-frame, I provide an upright
slotted main frame of metal which is furnished with an adjustable arm at the top
and at the bottom, and with lugs or ears for clamping the frame to the bed of a
lathe. I also provide a second frame adapted to slide in the slot in the main frame
and provided with a guide rod at the top and at the bottom, which guide rods pass
through and slide in holes made in the ends of the before mentioned adjustable
arms. This sliding frame carries the saw and is provided behind the main frame
with a slotted yoke or cross bar into the slot of which a pin on the face plate of the
lathe enters and imparts a reciprocating motion to the sliding frame when the face
plate is revolved in the usual manner.

page_text: It is obvious that my improved saw-frame can be clamped to a bench or the like
and actuated by a crank or by any other suitable means.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which
Figure 1 is a perspective view of my improved saw-frame, part of one side of the
slotted main frame being broken away:
Figure 2 is a perspective view drawn to a reduced scale illustrating the
application of my saw-frame to a lathe :
Figure 3 is a view shewing a slight modification.
a is the upright main frame which, as shewn in the drawing, is composed of two
side bars b, having secured to them at the ends two arms c, c' which also form
distance pieces for maintaining the bars at such a distance apart that the space
between them will form a slot d. Several sets of holes may be formed in the side
bars b, to permit of adjusting the arms c, d in any desired position. e, e are the
lugs or cars by means of which the said main frame is secured in any suitable
position. is the sliding frame the rear part of which slides in the slot d in the
main frame whilst the arms at the upper and lower ends are provided with the usual
holders or strainers g, g for the saw h. i, i are guide rods fixed to the sliding frame f
and passing through suitable guide sockets in the arms c, c¹, which sockets serve as
guides for the said frame.
In order to provide for any wear between the rods i, i and the said sockets in
which they slide, the sockets may be provided with removable linings or bushings,
or the rods may have removable casings clamped upon them so that when the said
casings become worn they can be readily renewed.
is the slotted yoke formed upon or fixed to the back of the sliding frame fand
serving to receive the pin of an operating crank such as a face plate. The slot of
this yoke can be provided with a removable lining if desired.
As hereinbefore stated my improved saw-frame can be clamped to a beach and
actuated by any suitable means. When, however, the saw-frame is to be worked
by a lathe, the lugs e, e are clamped upon the lathe bed by means of clamping
plates (such as k Figure 2) and a bolt, and a crank disc or face plate is fixed
upon the lathe spindle with the crank pin m in the slotted yoke j as shewn.
With this arrangement it will be readily understood that as the spindle of
the lathe is rotated, the sliding frame and consequently also the saw will be
reciprocated.
I sometimes combine with my saw-frame an arm n carrying an adjustable presser
foot o which is slotted to allow the saw to pass through it and serves to prevent
the material being operated upon from being lifted by the saw.
To enable the saw to be set at a slight angle for special kinds of work, one of the
holders or strainers may be formed with an arm as shewn at p, Figure 3.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a saw-frame the combination with a slotted main frame adapted to be
fixed in any desirable manner, of a sliding saw-frame having attached to it
guide rods sliding through suitable sockets carried by the main frame and
provided with a slotted yoke or cross bar for enabling it to be operated by a crank,
substantially as described.
2. The manufacture and use of the improved saw-frame hereinbefore described
and illustrated in the accompanying drawing.
D
السيد
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.