Year: 1898

page_text: A communication from ALBERT RAHIRE, of 6, Rue d'Hautmont, Louvroil (Nord),
in the Republic of France
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a machine for cutting files, having a continuous
reciprocating motion with variable course and quick return motion.
A frame having end supports carries four bearings in which rotate two shafts.
One shaft carries the driving pulley, a fly wheel and a pinion controlled by a
ratchet device by means of a disengaging device operated by a handle. The
A second
pinion engages with a wheel keyed to the second shaft on the frame.
pinion secured to this second shaft communicates the motion to a large wheel
carried in one of the frame supports. A segment of this wheel is solid and forms
a crank disc and is provided with a pin engaging in a slide movable in a guide
formed in a balance beam, the lower end of which is connected to the foot of one
of the frame supports. The head of this balance beam is provided with a pin on
which is pivotted a connecting rod which transmits movement to a carrier, movable
in guides in the frame.
The adjustability of the slide in the wheel enables the length of the course to
be altered.
The carrier receives a tool holder which can be vertically operated by means
of a pivotted lever, the rear end of which is provided with a balance weight.
A support beneath the frame receives the file to be cut and a handle enables it
to be tightened according to its length and shape.
The quick return motion is obtained automatically 'by the arrangement of the
balance beam, the pin connected to the big wheel occupying the same time in
passing through the portion of the circle, in the return as in the advance, the
rectilinear motion resulting from this movement being much greater during the
return.
Dated this 10th day of September 1898.
BOULT & WADE,
Agents for the Applicant.

page_text: One shaft D carries the driving pulley F, a fly wheel G and a pinion controlled
by a catch H by means of a disengaging device J operated by a handle K. The
pinion I engages with a wheel L keyed to the shaft E. A second pinion M
secured to the same shaft communicates the motion to a large wheel N carried in
one of the frame supports. A segment of this wheel N is solid and forms a crank
disc and is provided with a pin O engaging in a slide P movable in a guide Q
formed in a balance beam R, the lower end of which is connected at S to the foot
of one of the frame supports. The head T of this balance beam is provided with
a pin on which is pivotted a connecting rod U which transmits movement to a
carrier V movable in guides X in the frame.
The adjustability of the slide P in the wheel enables the length of the course
to be altered.
The carrier V receives a tool holder V¹, provided with a tool f, which can be
vertically operated by hand by means of a pivotted lever Y, the rear end of which
is provided with a balance weight Z.
A support a (Fig. 4) beneath the frame receives the file to be cut, which is held
between two plates or abutments c c¹, the latter of which is formed in one with
or secured to a slide d, which can be moved between the faces of the frame B,
according to the length of the file to be operated upon, so as to clamp it securely
against the fixed part h, a screw e, operated by a handle b, being employed to
effect this operation.
The quick return motion is obtained automatically by the arrangement of the
balance beam R the pin connected to the large wheel occupying the same time in
passing through the portion of the circle in the return as in the advance movement
the rectilinear motion resulting from this movement being much greater during
the return.
Having now particularly described and ascertained the nature of this inven-
tion as communicated to me by my foreign correspondent and in what manner
the same is to be performed, I declare that what I claim is: —
1. A file cutting machine having a continuous reciprocating motion in which the
return stroke of the tool is effected quickly by means of a connecting rod and a

page_text: slotted balance beam in which a slide on a pin on a wheel driven from the main
shaft operates substantially as described.
2. A file cutting machine comprising a frame a reciprocating tool holder a
connecting rod a pivotted slotted balance beam a slide movable in said slot and
carried on a pin on a wheel and means for rotating said wheel substantially as
and for the purpose described.
3. The combination and-arrangement of parts constituting the complete machine
for cutting files substantially as described or illustrated in the accompanying
drawings.