Year: 1886

page_text: I GABRIEL RAPHAEL HUGON of The Woodlands Stretford Manchester in the
County of Lancaster Engraver do hereby declare the nature of this Invention to be
as follows:-
My Invention has for its principal object to provide machinery to effect the
ready and efficient engraving of metal rollers to varying depths for use in
embossing or printing or for analogous uses.
The roller or surface to be engraved has affixed to it a disc at each end and is
then mounted on compound carriages so as to be capable of being moved into any
position necessitated by the work-The Pentagraphic frame is coupled to these
carriages and gives movement to the roller or surface both circumferentially and
longitudinally The drill holder or holders is or are stationary and mounted on a
rail For controlling the depth of the drilling I have provided the machine with
a compound system of levers mounted on the pentagraphic frame and coupled by a
screwed rod to a cam rail which moves a weighted lever or levers exerting pressure
on the drill or drills-By raising or lowering the tracer which is coupled to the
first lever of the said system a direct connection is maintained with the drill or
drills so that if a groove to be cut varies in depth the same variation is repeated in
the roller or surface being engraved.
In order to overcome the resistance to the motion which it is desired to give to
the tracer I have provided the tracing table with an arrangement for driving the
tracer by power which may be conveniently effected by a strap pulley driving a
frictional reversing motion such as a pair of reversely screwed boxes which can be
engaged or disengaged at will so as to move the tracer in any direction.
Usually the roller or surface to be engraved is mounted on a mandril maintained
in position by standards at the ends of the machine but in order to obtain the
necessary rigidity of the roller or surface under the action of the drill or drills
I mount it in carriages within which are placed friction rollers one of which has
a fixed position and the other one of which is contained in a hinged joint piece so
that by means of a spring to which the hinged joint is attached sufficient pressure
is obtained to hold the roller sideways.
T
1000
J. HENRY JOHNSON,
Agent for the said Gabriel R. Hugon.

page_text: доналарцію Dug&5
"
I, GABRIEL RAPHAEL HUGON of Seedley Mount Pendleton (late of The Woodlands
Stretford) Manchester in the County of Lancaster, Engraver 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 :-
My Invention has for its principal object to provide machinery to effect the ready
and efficient engraving of metal rollers to varying depths for use in embossing or
printing or for analogous uses.
The roller to be engraved has affixed to it a disc at each end and is then
mounted on compound carriages so as to be capable of being moved into any
position necessiated by the work. The Pentagraphic frame is coupled to these
carriages and gives movement to the roller both circumferentially and longitudinally.
The drill holder or holders is or are stationary and mounted on a rail. For
controlling the depth of the drilling or engraving I have provided the machine
with a compound system of levers mounted on the pentagraphic frame and coupled
by a screwed rod to a cam rail which moves a weighted lever or levers exerting
pressure on the drill or drills. By raising or lowering the tracer which is coupled
to the first lever of the said system a direct connection is maintained with the drill
or drills so that if a groove to be cut varies in depth the same variation is repeated
in the roller or surface being engraved.
In order to overcome the resistance to the motion which it is desired to give to
the tracer I have provided the tracing table with an arrangement for driving the
tracer by power which may be conveniently effected by a strap pulley driving a
frictional reversing motion which can be engaged at will so as to move the tracer
in any direction.
Usually in this type of Pentagraph machine the roller to be engraved being
mounted on a mandril is maintained in a parallel position by being mounted in
standards at the ends of the machine and it is supported by discs on the mandril
resting on roughened surfaces on a compound carriage. In lieu of these standards I
maintain the rigidity of the roller under the action of the drill or drills by
mounting it at each of its ends in a carriage provided with two friction wheels one
of which has a fixed position whilst the other is carried in a hinged or jointed
piece so that by means of a spring to which the hinged or jointed piece is attached,
sufficient pressure is obtained to hold the roller mandril sideways the carriages
being provided with means for maintaining the roller parallel as hereinafter
described.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed sheet of drawings the same letters of reference
indicating corresponding parts in all the figures.
Figure 1 is a front elevation. Figure 2 a plan and Figure 3 an
of an engraving machine constructed according to my invention.
end elevation
Figure 4 is a

page_text: transverse section taken along the line A. B in Figure 2 and the remaining figures
are details hereinafter referred to.
1. is the main table of the machine upon which the surface or article to be
engraved is mounted. Fitted to or formed in one with this table is a supplementary.
table 2 upon which the pattern or design to be engraved is placed, the said pattern
being cut or carved in a block 3 fixed to the top of said table 2. The roller to be
engraved is mounted on a compound carriage 4, 5 the lower carriage 4 being
arranged to travel on rollers or wheels a across the table 1 and the top carriage 5
being arranged to move to and fro upon rollers or wheels b over the lower table 4
in a direction at right angles to the motion of the said lower table.
The surface to be engraved may be either curved or flat, but I have shewn on
the drawings a cylindrical surface or roller 6. This roller is supported at its
opposite ends on blocks 15, and 16 (shewn detached in Figures 7 and 5 respectively).
fixed to the carriage 5. A half ring 13 is attached by steel tapes or strips e to the
block 15 to ensure the roller from slipping when being turned by the motion of
the compound carriage under the action of the pentagraph.
One end of the cylinder mandril bears upon the half ring 13 and is secured.
thereon by a strap 14 partly surrounding the said end of the mandril and bolted to
the half ring 13. The opposite end of the roller mandril is fitted with a ring 12.
resting upon the block 16 and is also fitted with an index 10 for determining and
indicating the position axially of the roller. Instead of the usual mode of keeping
the roller mandril in line by standards I support it in addition to the rings 12.
and 13 between friction wheels 19 and 20 mounted on the carriages 17° 17° the
friction wheels 20 being each carried in a piece 21 hinged to a spring 22 to give
side pressure to hold the roller 6 firmly between the said wheels 20 and the
opposite wheels 19. The carriages 17° 17° are supported on wheels & each carriage
being provided with a grooved projection z engaging a continuous lip or projection y
on a fixed rail 18 along which lip or projection the carriages 17° 17° are traversed,
for the purpose of bringing different portions of the roller 6 under the action of the
drills or engraving tools 36 as hereinafter described the said roller being
maintained parallel to the rail 18 during its longitudinal movements by the
projections and y.
The drills or engraving tools are mounted in frames 8 carried on the longitudinal
rail 7 and are maintained in contact with the roller 6 by weighted levers 34
pressing against the outer ends of the drill spindles the depth to which the drills
are required to penetrate the roller being regulated by a rocking bar 9 against,
which a tail piece on each of the weighted levers 34 is made to bear. The bar 9 is
connected by a link 33 to one end of a lever 31 centred at x to a block 32 fixed,
on the table 1 its opposite end being in contact with another lever 29 centre. at 30
to one of the bars of the pentagraph 23. The pentagraph is fulcrumed at 24 to the
table 1 and is connected at 25 to the carriage 5 upon which the cylinder 6 is
mounted. To this pentagraph is also hinged at 28 a lever 27 in one end of which,
the tracing point 26 is fixed so that when the tracing point is traversed over
curved surfaces on the pattern block 3 a corresponding motion will be transmitted
through the several levers referred to, to the drills 36 thereby producing on the
roller 6 corresponding curved surfaces on a reduced scale.
The tracing point 26 is traversed mechanically over the pattern in the following
manner. To the under side of the pattern table 2 is centred a radius arm 38
capable of being rotated and fixed at any desired point round the said table. The
outer end of the radius arm is provided with a socket in which is fitted to rotate
a vertical spindle driven by a strap 47 from the reversing gear 43 which receives
motion by pulleys and driving straps as shewn in Figure 3 from the shaft 41.
On the upper end of the vertical spindle (as shewn clearly in the sectional view-
Figure 9) is fixed a bevel wheel 45 gearing with a corresponding wheel 46 fitted
on a sleeve or collar m mounted so as to revolve in a swivelling head piece on the
vertical spindle. In this head piece n rests a screwed rod 39 which is hinged at

page_text: one end to the socket 26 carrying the tracing point. The outer end of the said
rod is capable of being moved round the table 2 into any required position. The
wheel 46 is provided with a box 40 containing two half nuts p which when desired
may be caused to engage the screw thread on the rod 39 and thereby impart to the
Baid rod by means of the reversing motion 43 and lever 44 a longitudinal movement
in one direction or the other and thus cause the tracing point 26 to move in a
corresponding direction over the pattern on the table 2. It will thus be seen
that by means of these longitudinal motions of the rod 39 in combination with
the adjustment of the radius arm 38 the tracing point 26 may be guided by
power over the whole surface of the pattern block and impart through the
pentagraph 23 a corresponding movement to the roller 6 thereby presenting the
surface thereof to the action of the drills which are rotated from the shaft 41 by
the band or cord 42 and will effect the engraving of the surface presented to them
corresponding to the pattern over which the tracing point is caused to travel.
The tracing point 26 is kept in contact with the pattern by a weighted lever 57.
Figure 8 represents in sectional elevation and plan an arrangement for guiding
the tracing point when slots of a given length are required to be drilled in the
roller. Instead of the mitre gearing 45, 46 herein before described a bar 54 having
a dovetail projection on the top face is fixed on the upper end of the vertical
spindle which turns in the socket at the end of the bar 38 and on the dovetail
projection is fitted to slide a piece 55 through which. passes a plain rod 48 one
end of which is connected to the socket which carries the tracing point 26.
piece 55 is capable of being adjusted and fixed in any required position on the
bar 54 according to the length of the slots to be drilled. The spindle upon which
the bar 54 is fixed carries at its lower end an elliptical toothed wheel 49 in gear
with an eccentric toothed wheel 50 mounted on a stud on the radial bar 38 on
which stud is also mounted a worm wheel 51 in gear with a worm fast on one end
of a shaft 52. This shaft rotates in bearings on the bar 38 and receives motion
by means of the gearing 53 from the reversing mechanism 43, 44 herein before
described with reference to Figures 1, 2 and 3. Upon imparting motion to the
shaft 52 motion will be transmitted through the worm and worn wheel 51 and
the wheels 50 and 49 to the spindle carrying the bar 54 causing the tracing
point 26 to travel over the pattern surface a greater or less distance according to
the position in which the piece 55 is fixed on the bar 54 the cylinder 6 being
moved by the pentagraph a correspondingly proportional distance in front of the
drills or engraving tools.
The
In order to facilitate the rotation of the roller 6 to bring another portion of its
circumference under the action of the drills the carriages 17° 17° are each
provided with a frame 60 (shewn in Figure 6) containing a friction roller u and
a sliding block 61 also provided with a friction roller t. This block is acted upon
by a screw & fitted to turn in the frame 60 so that by turning the said screw in
one direction the friction roller t is caused to approach the roller u and thereby
raise the roller 6 from its bearing on the block 15 and 16 the strap 14 having
been previously released from the half ring 13. The roller 6 may then be readily
turned to the required extent which may be determined by the index wheel 10
and be again fixed in its adjusted position by first withdrawing the friction
rollers t to admit of the roller 6 seating itself on the block 15 and 16 and then
tightening up the strap 14 the process of engraving may then be proceeded with
as herein before described.
4
Having now described and particularly ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
First In pentagraphic engraving machines the particular manner of mounting
the roller to be engraved substantially as herein before described with reference

page_text: Second-In pentagraphic machines the arrangement of the levers and means
for controlling the depth of engraving substantially as hereinbefore described with
reference to the accompanying drawings.
Third: In pentagraphic machines the means substantially as hereinbefore
described and illustrated by the accompanying drawings for driving the tracer
by power for the purpose described.
Fourth-The general arrangement and combination of parts constituting the pen-
tagraphic engraving machine substantially as hereinbefore described and illustrated
in the accompanying drawings.