Year: 1897

page_text: We, LA SOCIÉTÉ ANONYME DES HAUTS-FOURNEAUX, FORGES ET ACIERIES DU SAUT
DU TARN, and ADOLPHE ESPINASSE, both of 19 Rue d'Athénes, Paris, France, do
hereby declare the nature of this invention to be as follows:-
Our improvements have reference to machines suitable for grinding, sharpening,
trueing, and polishing, by means of grindstones, metallic articles of various kinds
such as files, springs, and other forged articles, edge-tools, and hardware goods, and
relate to a special support applied to the framing of such a machine, and located
under the grindstone in such a manner that it can be moved nearer to or further
from the .said grindstone.
The support is formed at the top in the shape of a basin or trough and is pro-
vided at its rear with an engaging and disengaging apparatus. By means of rails
placed at the bottom of the trough, there is provided a path for the longitudinal
rolling of a carriage upon which a plate intended to carry the articles to be
ground can be moved transversely. This carriage is connected, by means of a
toothed rack, to the engaging and disengaging apparatus. At the end of the
forward travel of the carriage, the plate can be moved or pulled out of the range
or plane of the grindstone in such a manner that the workman can turn or replace
the metallic articles without running any risk in the case of the breakage of the
grindstone.
te
Figs. 1, 2, and 3 of the accompanying drawings represent the general arrange-
ment of the machine in side elevation, front elevation, and plan respectively.
Fig. 4 represents an arrangement of elastic rest which bears on the plate and
upon which the articles to be ground are arranged.
The frame A, the grindstone B, and the other accessory parts are drawn in
finer lines than the trough shaped support C, the large stem C' of which is adapted
to slide in a tubular socket S attached to the frame. A screw r, whose end enters
a vertical groove in the stem C', prevents the support from turning. The move-
ment of the support in a vertical direction is produced by means of a screw V,
which works in lugs VV, and by the operation of a nut or a ratchet-pawl 7.
Removable rails.r r are. located at the bottom of the trough C. Their upper
surface may be straight or may be curved to the shape of the articles to be
ground. The carriage E is adapted to roll. on the rails rr by means of rollers
or wheels O, O. At the upper part of the carriage there are arranged other
rollers or wheels o o, whose axes are perpendicular to the axes of the wheels or
rollers 0, 0; and upon the said upper rollers there is adapted to bear and to roll
transversely a plate. K formed, with ribs on the top at its periphery, and capable
of sliding between the extreme transverse ribs n, n of the carriage.
The support C,carries in bearings a, at its closed rear end,, a shaft upon
which a pinion b¹ is keyed. Upon each end of the shaft 6 there is arranged to
slide on a feather the cone cor c¹ of a conical friction-clutch, each cone being
surrounded by a loose pulley h or formed internally with the same conicity as
the corresponding cone c or c

page_text: The loose pulleys constantly revolve, one in one direction, the other in the
opposite direction, and are arranged at a distance of from three to four millimetres
from the corresponding cones e and c¹.
The cones c, c¹ are connected together by means of an arm D, which is adapted
to slide under the end of the support, by the action of an operating lever d to the
end of the short arm of which the arm D is connected by a pin k. The lever d,
which oscillates about a point X, is jointed at u to a straight bar q upon which
at determined points are mounted tappets which strike, in turn, against a
tappet e which, is fixed to the carriage E and enters with its lower end a slot or
groove formed longitudinally in the centre of the said straight bar.
A toothed rack J attached at one end with a slight play by means of a pin to
the carriage E, extends through an opening formed in the transverse rib that
terminates the support and serving as a guide for the said toothed rack which
gears into the pinion 6', whose motion is made to accord with that of the carriage.
On one side of the support there is formed a horizontal projecting shelf I on
which there is provided by means of angle irons a groove g that communicates
with another groove g¹ which is perpendicular thereto. In the groove 9 there
engages a stud f arranged eccentrically on a pin y adapted to turn in the eye of
an extension L rigidly connected with plate K. The groove g is, for part of its
length, inclined to the plane of rotation of the grindstone in such a manner that
the stud f, in moving in the same, causes the plate K to slide transversely as
regards the carriage E, and thus the points at which the grindstone attacks the
metal travel transversely and the grindstone is worn away, and works, uniformly.
In turning, in its bearing, the eccentric pin y carrying the stud f, the position of
the points attacked by the grindstone is also altered with relation to the planes
of rotation which correspond to the said various points.
When the articles to be ground have longitudinally, a curved shape on the top,
it is sufficient to give the same curvature to the rails r, r, in order to produce
direct grinding or grinding according to form, that will not require the use of
elastic plates for supporting those articles. But when the articles to be ground
have slightly curved surfaces and vary but very slightly in thickness from one
end to the other, the rails r, rl remain straight, but then the articles to be ground
are placed upon supports having a certain amount of elasticity. These supports,
which may consist of mere blocks of rubber are generally constructed after the
manner indicated by Fig. 4, in which the studs or brackets s, s, are formed at the
top to receive and hold the articles along their contour, and bear on an elastic
seating constituted by a spring. The degree of pressure of the articles against
the grindstone may be rendered practically constant, either by making the springs
of sufficient length, or by employing in their stead, levers one end of which
carries the tappet or stop whilst the other end is loaded with a weight.
machine may be simple or double-that is to say, there may be one or two grind-
stones on one and the same frame. The dust produced by the work may be
drawn off and discharged by means of a fan, as is done in the case of machines
of the same kind working wet or dry.
The mode of operation of this machine is as follows:-
The
The support having been set to the desired height and fixed and a small
table p, situated in front, having been supplied with the articles to be ground,
the grindstone is put into motion if it is not so already; at the same time, by
means of the lever d, there is brought into engagement that one of the cones c
or c¹ that causes the pinion to turn in such a manner as to cause the carriage E
to advance under the grindstone. As the carriage advances, the plate K, and
consequently the small table p, advance transversely to a certain extent under the
pressure of the pin f sliding in the groove g. A stop catch or tappet Z prevents
all sliding of the articles under the biting action of the grindstone. When the
course of the carriage is to terminate, the tappet e comes against the tappet t¹
and disengages the cone that has so far been in engagement. The other cone
is then engaged by means of the lever d; the pinion immediately rotates in

page_text: the contrary sense, and the carriage returns, its course being arrested when the
tappet e strikes against the tappet t and the pin f is opposite to the groove g¹.
The workman brings the pin f into the groove y', pulling the plate K and its small
table aside, which permits him to turn or to replace the metallic articles whilst
keeping outside the plane of rotation of the grindstone, and sheltered from all
danger. The articles being put back into place, the plate K is pushed back
opposite to the grindstone, then pushed under, the first cone being put into engage-
ment by means of the lever d, and so on.
It will be seen that the grindstone B, mounted on its axle, in the ordinary
manner, has no motion except that of rotation, which renders its operation much
more certain than if, whilst turning, it had to be displaced in height or transversely,
which would cause it to jump and vibrate, not without real danger of breaking.
It will thus be seen that the support is arranged in such a manner that the
carriage that it supports will stop automatically at each end of its course, that
the articles, worked according to form or supported elastically can be brought
to the height wished, that they will be displaced transversely, both during
the work and after the completion of the forward travel of the carriage, and finally
that their superintendence and handling may be done without its being necessary
for the workman to be in front of the grindstone.
ليوم
1807
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
We, LA SOCIÉTÉ ANONYME DES HAUTS-FOURNEAUX, FORGES ET ACIERIES DU SAUT
DU TARN, and ADOLPHE ESPINASSE, Engineer, both of 19 Rue d'Athénes, Paris,
France, 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:-
Our improvements have reference to machines suitable for grinding, sharpening,
trueing, and polishing, by means of grindstones, metallic articles of various kinds
such as files, springs, and other forged articles, edge-tools, and hardware goods, and
relate to a special support applied to the framing of such a machine, and located
under the grindstone in such a manner that it can be moved nearer to or further
from the said grindstone.
The support is formed at the top in the shape of a basin or trough and is pro-
vided at its rear with an engaging and disengaging apparatus. By means of rails
placed at the bottom of the trough, there is provided a path for the longitudinal
rolling of a carriage upon which a plate intended to carry the articles to be
ground can be moved transversely. This carriage is connected, by means of a
toothed rack, to the engaging and disengaging apparatus. At the end of the
forward travel of the carriage, the plate can be moved or pulled out of the range
or plane of the grindstone in such a manner that the workman can turn or replace
the metallic articles without running any risk in the case of the breakage of the
grindstone.
Figs. 1, 2, and 3 of the drawings filed with our Provisional Specification represent
the general arrangement of the machine in side elevation, front elevation, and
plan respectively.
Fig. 4 represents an arrangement of elastic rest which bears on the plate and
upon which the articles to be ground are arranged.

page_text: The frame A, the grindstone B, and the other accessory parts are drawn in
finer lines than the trough shaped support C, the large stem of which is adapted
to slide in a tubular socket S attached to the frame. A screw v, whose end-enters
a vertical groove in the stem C', prevents the support from turning. The move-
ment of the support in a vertical direction is produced by means of a screw V,
which works in lugs V₁ V", and by the operation of a nut j or a ratchet-pawl l.
Removable rails r r are located at the bottom of the trough C. Their upper
surface may be straight or may be curved to the shape of the articles to be
ground. The carriage E is adapted to roll. on the rails r r by means of rollers
or wheels 0, 0. At the upper part of the carriage there are arranged other
rollers or wheels oo, whose axes are perpendicular to the axes of the wheels or
rollers O, O; and upon the said upper rollers there is adapted to bear and to 'roll
transversely a plate K formed with ribs on the top at its periphery, and capable
of sliding between the extreme transverse ribs n, n of the carriage.
The support C carries in bearings a, a¹ at its closed rear end, a shaft b upon
which a pinion is keyed. Upon each end of the shaft b there is arranged to
slide on a feather the cone c or c¹ of a conical friction-clutch, each cone being
surrounded by a loose pulley h or 'formed internally with the same conicity as
the corresponding cone c or c¹.
The loose pulleys constantly revolve, one in one direction, the other in the
opposite direction, and are arranged at a distance of from three to four millimetres
from the corresponding cones c and c¹.
The cones c, c¹ are connected together by means of an arm D, which is adapted
to slide under the end of the support, by the action of an operating lever d to the
end of the short arm of which the arm D is connected by a pin k. The lever d,
which oscillates about a point X, is jointed at u to a straight bar q upon which
at determined points are mounted tappets tt which strike, in turn, against a
tappet e which, is fixed to the carriage E and enters with its lower end a slot or
groove formed longitudinally in the centre of the said straight bar.
A toothed rack J attached at one end with a slight play by means of a pin to
the carriage E, extends through an opening formed in the transverse rib that
terminates the support and serving as a guide for the said toothed rack which
gears into the pinion 6', whose motion accords with that of the carriage. "
On one side of the support there is formed a horizontal projecting shelf I on
which there is provided by means of angle irons a groove g that communicates
with another groove g¹ which is perpendicular thereto. In the groove g there
engages a stud f arranged eccentrically on a pin y adapted to turn in the eye of
an extension L rigidly connected with plate K. The groove g is, for part of its
length, inclined to the plane of rotation of the grindstone in such a manner that
the stud f, in moving in the same, causes the plate K to slide transversely as
regards the carriage E, and thus the points at which the grindstone attacks the
metal travel transversely and the grindstone is worn away, and works, uniformly.
In turning, in its bearing, the eccentric pin y, carrying the stud f, the position of
the points attacked by the grindstone is also altered with relation to the planes
of rotation which correspond to the said various points.
When the articles to be ground have longitudinally, a curved shape on the top,
it is sufficient to give the same curvature to the rails r, r, in order to produce
direct grinding or grinding according to form, that will not require the use, of
elastic plates for supporting those articles. But when the articles to be ground
have slightly curved surfaces and vary but very slightly in thickness from one
end to the other, the rails r, 1 remain straight, but then the articles to be ground
are placed upon supports having a certain amount of elasticity. These supports,
which may consist of mere blocks of rubber are generally constructed after the
manner indicated by Fig. 4, in which the studs or brackets s, s, are formed at the
top to receive and hold the articles along their contour, and bear on an elastic
seating constituted by a spring. The degree of pressure of the articles against
the grindstone may be rendered practically constant, either by making the springs

page_text: The
of sufficient length, or by employing in their stead, levers one end of which
carries the tappet or stop whilst the other end is loaded with a weight.
machine may be simple or double-that is to say, there may be one or two grind-
stones on one and the same frame. The dust produced by the work may be
drawn off and discharged by means of a fan, as is done in the case of machines
of the same kind working wet or dry.
The mode of operation of this machine is as follows:
:--
The support C having been set to the desired height and fixed and a small
table p, situated in front, having been supplied with the articles to be ground,
the grindstone is put into motion if it is not so already at the same time, by
means of the lever d, there is brought into engagement that one of the cones c
or c¹ that causes the pinion b to turn in such a manner as to cause the carriage E
to advance under the grindstone. As the carriage advances, the plate K, and
consequently the small table », advance transversely to a certain extent under the
pressure of the pin f sliding in the groove g. A stop catch or tappet Z prevents
all sliding of the articles under the biting action of the grindstone. When the
course of the carriage is to terminate, the tappet e comes against the tappet
and disengages the cone that has so far been in engagement. The other cone
is then engaged by means of the lever d; the pinion & immediately rotates in
the contrary sense, and the carriage returns, its course being arrested when the
tappet e strikes against the tappet and the pin f is opposite to the groove g¹.
The workman brings the pin f into the groove gl, pulling the plate K and its small
table aside, which permits him to turn or to replace the metallic articles whilst
keeping outside the plane of rotation of the grindstone, and sheltered from all
danger. The articles being put back into place, the plate K is pushed back
opposite to the grindstone, then pushed under, the first cone being put into engage-
ment by means of the lever d, and so on.
It will be seen that the grindstone B, mounted on its axle, in the ordinary
manner, has no motion except that of rotation, which renders its operation much
more certain than if, whilst turning, it had to be displaced in height or transversely,
which would cause it to jump and vibrate, not without real danger of breaking.
It will thus be seen that the support is arranged in such a manner that the
carriage that it supports will stop automatically at each end of its course, that
the articles, worked according to form or supported elastically can be brought
to the height wished, that they will be displaced transversely, both during
the work and after the completion of the forward travel of the carriage, and finally
that their superintendence and handling may be done without its being necessary
for the workman to be in front of the grindstone.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. A supporting-head in the form of a longitudinal basin or trough C carried
by a vertically adjustable but non-rotatable stem C₁ removable rails r, r arranged
at the bottom of the supporting head; a carriage E provided with rollers 0, 0
arranged to run on the said rails and carrying other rollers o, o; a plate K,
capable of moving transversely on the rollers o. 。 adapted to support on
small tables p, or on blocks rendered elastic, the articles to be worked, and
furnished with an extension L in the eye of which is lodged a pin / carrying an
eccentrically arranged stud f and a guide groove into which the said stud
projects and which for a part of its length is inclined to the plane of rotation
of the grindstone and at one end communicates with an outwardly extending
groove gl so that a slight transverse displacement will be imparted to the plate K
during the longitudinal movements of the carriage, and a greater lateral dis-
placement can be imparted to the plate at the termination of each forward run
of the said carriage.
2. In combination with the carriage E referred to in the preceding claim, a

page_text: rotary shaft 6 provided with a central pinion 61, a rack J attached to the carriage
and in gear with the pinion, friction-cones c, c¹ mounted to slide endways upon
but to rotate with the said shaft, conical pulley h and h¹ mounted to revolve in
opposite directions upon the shaft and surrounding the friction cones, an arm 1)
connected to the cones and arranged to slide, under the extremity of the work {
support, and an engaging-lever d jointed to the said arm D and a straight bar q
provided with tappets t, t and against which a tappet e on the carriage is adapted
to abut alternately when the carriage approaches the end of its travel in either
direction substantially as described for the purpose specified.
3. The combination and arrangement of parts constituting the improved
grinding machine described and shown.
00
L
1
0 Th
1007
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.