IMPROVEMENTS IN MILLING-MACHINES
Year: 1883

page_text: LETTERS PATENT to Henry Harris Lake of the firm of Haseltine, Lake
"
& Co, Patent Agents, Southampton Buildings, London. for an Invention of
IMPROVEMENTS IN MILLING-MACHINES" communicated to him from abroad
by Pierre Philippe Huré of Paris France
PROVISIONAL SPECIFICATION left by the said Henry Harris Lake at the
Office of the Commissioners of Patents on the 11th May 1883.
"
HENRY HARRIS LAKE, of the firm of Haseltine, Lake & C° Patent Agents,
Southampton Buildings; London "IMPROVEMENTS IN MILLING-MACHINES
[a communication to him from abroad by Pierre Philippe Hure of Paris France]
This invention relates to machinery for cutting articles of metal such as rimers
and gear wheels and it can also be used for sharpening cutters, rimers or the like
According to the said invention I provide three carriages, two of which are
actuated by a lever, serving to move the cutter bearing spindle in all directions se
as to produce various shapes according to a template which is larger than the piece"
which is intended to be cut; A vice in which the template is fixed, this template
being curved so that the radius of such curve shall be equal to that of the curve
described by the tracer; and a tracer the motion of which is regulated in accordance
with the diameter of the cutter and to which may be substituted a spring point
designed to trace on the template from the profile of the article which is to be cut.
A specimen of this machine is shown on the accompanying drawings.
Figure 1 is a sectional side elevation of a machine embodying this invention
Figure 2 is a front elevation of the same and
Figure 3 is a plan
Figures 4 and 5 show the arrangement of straps and pulleys for setting tho
machine in motion.
Similar letters of reference indicate corresponding parts in the several Figures.
The cutter bearing spindle a is mounted upon a vertical carriage b which moves
upon a horizontal carriage c. These two carriages are moved by means of a lever d
arranged upon a pivote and upon another pivot hereafter described resting on the
vertical carriage b

page_text: The motion imparted to these carriages by the lever causes a rectilinear
movement of the cutter both vertically and horizontally and it is by means of
this motion that the outlines of the template fixed upon the vicef may be traced.
These outlines are sketched by a tracer d¹ which moves horizontally in a slot
formed in the lever d and vertically in a guide provided with a screw.
The vice is movable and its motion varies according to the size of the templates
and of the piece which is to be cut; it is further arranged so as to cause the
templates to curve, such a curve being equal to the curve described by the tracer
fixed upon the lever; The lever d is pivotted at e upon an arm of the transverse
carriage 9 and also in a ring fixed upon the carriage b and which is movable in a
vertical slot. In this ring which is lined inside with tempered cast steel, a ball,
also of tempered steel, is fitted and forms an integral part of the lever d. Two
screws permit the ring to be tightened when required in order to prevent too much
play.
The carriages b and c are mounted upon a transverse carriage g which receives
its motion from a screw to which a handle is attached and serves to regulate the
position of the cutter h with regard to the piece which has to be cut.
The cutter bearing spindle is actuated by a tension strap running upon a frame j
which is fixed overhead; this arrangement is shown in Figures 4 and 5, in which k
is a large pulley connected with the cone pulley of the spindle of the machine: Vis
a counterpoise; m is the belt connected to the motor: n is a loose pulley; o is a
fixed pulley being integral with the pulley p which is connected with another
pulley fixed upon the axle of the wheel k s is a movable carriage placed upon
the vertical carriage b and connected with the same by means of a pin moving in
a slot this carriage allows the cutter bearing spindle to be raised and thus
t is a horizontal
provide for the cutting of articles having a large diameter.
carriage turning upon a circular dovetailed foot and carrying a poppet u having a
dividing plate and a counterpoint v. This carriage moves automatically in such
a manner as to impart a rotary movement to the axle of the poppet u and thus
permits the cutting of helicoidal grooves or the like on various articles.
The different depths in the cutting are obtained by means of a series of gear wheels.
The carriage t does not form an integral part with the table of the machine, as it
can be removed when required and the poppets u and v can be placed on the table
when they are required for the cutting of straight grooves in rimers, gearings or
the like.
The automatic motion is transmitted from a grooved pulley, fixed upon thé
cutter bearing spindle a, by means of a strap running upon a pulley x, at the
extremity of a shaft fixed upon the base of the machine. A grooved pulley x is
fixed upon the same shaft as the pulley and transmits motion by means of a
belt to the pulley y which being fixed upon the same shaft as pulley y further
transmits by means of a belt motion to a pulley z fixed on a shaft on which is a
worm which transmits motion to the screw of the carriage by means of two bevel
wheels.
A small lever serves either to put one of these bevel wheels in or out of gear in
order to start or stop the automatical movement.
This machine is also arranged to sharpen tempered rimers of all shapes, by means
of emery grinding stones, American stones or any other description of stone which
may be used; these stones being fixed on the spindle instead of the cutter ha
template being also used in this case.
The machine is mounted upon a cast iron table supported by a column and the
form and size may be varied as required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Harris Lake in the Great Seal Patent Office on the
10th November 1883.
.
HENRY HARRIS LAKE of the firm of Haseltine, Lake, & C° Patent Agents,
Southampton Buildings, London "IMPROVEMENTS IN MILLING-MACHINES".
A communication to me from abroad by Pierre Philippe Huré, of Paris, France
This invention relates to milling machines for shaping articles of metal such as
rimers, gear wheels, and the like and with either straight or helicoidal teeth; the
said machine being also used for sharpening cutters, rimers and similar articles
The said invention comprises the following novel features that is to say: -
(1) the arrangement of two carriages actuated by a lever serving to move the
cutter bearing shaft mounted upon one of the said carriages into various positions
so as to produce articles of different shapes in accordance with templates which are
made a certain number of times larger than the article which has to be cut.
(2) The arrangement of a- table (which can be raised or lowered by means of a
screw) carrying the puppet heads which hold the material being operated upon
and which can be moved with relation to the cutter bearing shaft by means of two
carriages, carrying at their point of intersection a circular journal which serves as
a pivot for the said table and which is inclined in various directions as required
when cutting in a helicoidal manner. (3) The arrangement for the automatic
motion of the table and for the automatic disengagement of the machine by means
of levers and stop pieces, and the arrangement of a puppet head mounted upon the
said table for helicoidal cutting by means of gear wheels arranged according to the
size and be direction of the pitch of the teeth required to be formed; lastly the
arrangement of a vice carrying the template and a tracer sliding upon the same.
In the accompanying drawings
Figure 1 is a side elevation of a machine embodying this invention
Figure 2 is a front elevation of the same and
Figure 3 is a plan
Figures 4 and 5 shew the mechanism employed for transmitting movement from
the motor to the machine.
Figures 6, 7 and 8 are views of apparatus used for sharpening cutters, rimers
and the like
Figures 9, 10, 11 and 12 shew various details of the mechanism used for
automatically throwing the machine out of gear.
Similar letters of reference indicate corresponding parts in the several figures
The cutter shaft A is mounted upon a carriage B which moves perpendicularly
upon a carriage C which slides upon the frame D. These two carriages are moved
by means of a lever E oscillating upon a pivot F and upon another pivot, herein-
after described, attached to the carriage B. The motion imparted to these carriages,
causes a horizontal and vertical movement of the cutter shaft, which movement
allows the said shaft to follow the outlines of a template fixed upon the vice G.
These outlines are sketched by a tracer E' which moves horizontally in a slot
formed in the lever E and vertically in a guide provided with a screw.
The said tracer may be inclined so as to remain perpendicular to the template
whatever position the latter may assume when the table is inclined as is the
case when the machine is cutting metal to form helicoidal or irregular cutters or
rimers.
The vice is movable and is attached to the front part of the table at a point
which may slightly vary, and it is provided with a screw permitting the adjustment

page_text: of the clamps securing the template. The said vice is arranged so as to admit
templates having a curve the radius of which is regulated by the tracer mounted
upon the lever, but it can also admit straight templates when required as will
hereinafter be described.
The lever E oscillates upon a pivot F fixed together with a support for the same
upon the frame of the machine, and passes through an annular socket F¹ fixed
upon the carriage B. This piece F is lined with a ring of cast steel in which
moves a ball also made of cast and tempered steel integral with the lever E. The
said cast steel ring being split two pressure screws permit the said ring to be
tightened in order to prevent too much play.
The cutter bearing shaft A is driven from pulleys arranged in a frame H fixed
overhead which pulleys by means of belts transmit the movement of the motor to
the machine.
J indicates a large pulley connected with the conical pulley of the cutter bearing
shaft A of the machine. K is a counterpoise, L a belt connected to the motor.
Ma loose pulley and N is a fixed pulley integral with the pulley O which is
connected with another pulley P keyed upon the shaft of the wheel J.
The frame D of the machine is hollow and open and its front part is provided
with a slide in which a bracket Q ascends and descends by means of a screw
actuated by toothed wheels, upon which bracket slide the double carriages R
and R¹ and the table S, the automatic motion of which takes place as follows that
is to say-Upon the base of the frame D are fixed two supports T in which
rotates a small shaft U. Upon one of these supports is journalled a tension lever
arm V, at the extremity of which is placed a small conical pulley provided with
two grooves one of which is connected with the cutter bearing shaft A and the
other with a large pulley mounted upon the shaft U. Upon the shaft U is
mounted a small pulley transmitting the motion to another small pulley revolving
with its shaft placed at the extremity of the tension arm V¹ which is journalled
upon the second support T. This small pulley transmits motion to the shaft U1
passing through the double carriage R, R. By means of an arrangement of a
worm and wheel and bevelled wheels motion is imparted to the large screw of the
table S which causes the same to move forward whereas at the same time that its
extremity which is toothed imparts a motion to the gear wheel of the poppet
head X for helicoidal cutting. In the case of rimers which are to be formed with
straight teeth, the support of the gear wheels is loosened and the latter are thrown
out of gear, the shaft of the poppet head X ceasing consequently to rotate. The
extremity of the said shaft is provided with an alidade operating upon a
divider.
Two stop pieces are moved in turn beneath a lever which is raised and allows
when falling the disengagement of the mechanism producing the automatic
motion.
When as above stated rimers have to be formed with straight teeth the table S
and the poppet head X remain fixed and a forward motion is imparted by the
carriages B and C actuated by the lever E, in this case the template is curved upon
the radius regulated by the lever and is larger than the piece which has to be
produced. But if on the contrary the carriages B and C are fixed upon the frame
by means of screws, and a forward motion is imparted by the table S, the
template will only have the exact shape and length of the piece to be
produced.
The apparatus thewn in Figures 6, 7 and 8 designed for sharpening cutters
rimers and the like is composed of a socket Y provided with two arms carrying
bearings in which rotates a small shaft upon which is mounted a pinion actuated
by a larger pinion mounted upon the cutter bearing shaft A in lieu of the cutter,
At the extremity of the said small shaft is mounted an emery wheel or the like
used for sharpening purposes. This socket is fixed upon the carriage of the cutter
bearing shaft and can by means of a screw be inclined in all directions to sharpen
either the top or the end of a cutter or rimer; this sharpening is effected

page_text: transversely to the tooth which is being sharpened. The details of the apparatus
for automatically throwing the machine out of gear are shewn in Figures 9, 10,
11 and 12. This apparatus comprises a bearing a upon which rests a conical
pinion actuated by a hand lever b which oscillates upon a screw pivot c and
engages in the notch of a flat lever d acting upon stop pieces h (Figure 12) fixed
upon the carriage by means of a square headed bolt i.
A spring k acts upon the bearing a, and is compressed by means of the lever b,
as shewn in Figure 10. The lever d is held in a suitable position by means of the
screw g which is located in a slot formed in the said lever.
Having thus fully described the said invention as communicated to me by my
foreign correspondent and the manner of performing the same I wish it understood
that I claim, in a milling-machine:-
First. The combination and arrangement of the two carriages B and C actuated
by. the lever E provided with a slot for permitting the position of the tracer E' to
be adjusted, substantially as described and for the purpose specified.
Second. The employment and arrangement of mechanism for transmitting the
power of the motor to the machine and consisting of a counterweight K, the loose
and fixed pulleys M and N, the latter being integral with the pulley O which
drives the pulley P keyed upon the shaft of the wheel J, and a lever V carrying a
cone pulley with two grooves, substantially as described.
Third. The combination of mechanism for transmitting power from the motor to
the machine as above described, with a large and a small pulley both mounted
upon the shaft U, the tension arm V', the worm, and the double carriage R, R',
substantially as described and for the purpose specified.
Fourth. The employment and arrangement of the sharpening apparatus
consisting of a socket Y provided with bearings, two bevel pinions one of which
is keyed upon the cutter bearing shaft A, and an emery wheel z, substantially as
described with reference to figures 6, 7 and 8 of the drawings.
Fifth. The employment of mechanism for effecting the automatic disengagement
as above described comprising a bearing a, a hand lever b, a flat lever d provided
with a notch, stop pieces h, and a spring k, substantially as described with
reference to Figures 9, 10, 11, and 12 of the drawings for the purpose specified.
In witness whereof I the said Henry Harris Lake have hereunto set my hand
and seal this Tenth day of November in the year of our Lord one thousand
eight hundred and eighty three.
HENRY IT TAZE