IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MILL AND OTHER ENGRAVING, PUNCHING, DIVIDING, AND RULING ROLLERS, EITHER FOR HAND OR MACHINE ENGRAVING; AND AN IMPROVED MAUNDRIL USED IN MILL, ECCENTRIC, AND OTHER MACHINERY EMPLOYED IN ENGRAVING ROLLERS FOR PRINTING AND EMBOSSING CALICOES AND OTHER FABRICS
Year: 1856

page_text: LETTERS PATENT to John Barber, of the City of Manchester, in the
County of Lancaster, Engraver to Calico Printers, for the Invention of
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MILL AND OTHER
ENGRAVING, PUNCHING, DIVIDING, AND RULING ROLLERS, EITHER FOR HAND
OR MACHINE ENGRAVING; AND AN IMPROVED MAUNDRIL USED IN MILL,
ECCENTRIC, AND OTHER MACHINERY EMPLOYED IN ENGRAVING ROLLERS FOR
PRINTING AND EMBOSSING CALICOES AND OTHER FABRICS."
Sealed the 17th March 1857, and dated the 17th September 1856.
PROVISIONAL SPECIFICATION left by the said John Barber at the
Office of the Commissioners of Patents, with his Petition, on the 17th
September 1856.
I, JOHN BARBER, of the City of Manchester, in the County of Lancaster,
Engraver to Calico Printers, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MILL AND
OTHER ENGRAVING, PUNCHING, DIVIDING, AND RULING ROLLERS, EITHER FOR HAND
OR MACHINE ENGRAVING; AND AN IMPROVED MAUNDRIL USED IN MILL, ECCENTRIC,
AND OTHER MACHINERY EMPLOYED IN ENGRAVING ROLLERS FOR PRINTING AND
EMBOSSING CALICOES AND OTHER FABRICS," to be as follows:-
I obtain encreased facility in dividing and punching the pitch pins on the
rollers for engraving by mill and other machines, and in the setting out for
hand and other engraving, by an improved method of securing the roller to
the maundril. Instead of the usual box maundril made in segments or

page_text: wedges, and coned inside to fit the inside circle of the roller, I fasten the
roller on the maundril by a bell chuck or chucks, formed so as to grip the
whole outside coned circle of the roller, the chuck being coned inside to
receive rollers of different sizes, one of the said chucks either forming part of
the maundril or not, as required. The said loose chuck or chucks having a
long barrel bored and made to fit the shaft of the maundril, one end of which
is screwed, and has a washer or washers to fit with a flange to receive the
sunk part of the nut when one loose chuck is used, the sharp edges being
taken off the outside circle of the roller by the tool when turned off in the
usual way. When the roller is forced by the maundril nut into its bed in
the chuck, the maundril will be put in the centre of the roller, and be prevented
from working back by set screws in the flange of the washer, by being screwed
down to the sunk part of the nut. I place the roller with the maundril
between two antifriction wheels, in pedestals on the adjusting table of the
machine, the maundril necks passing down the slots or grooves, with ribs
well got up on each side. The maundril has two collars at the index end,
made to fit well upon the ribs of the head stock, to prevent end play of the
maundril and roller, which, working on its own bearings, and the shanks of
the maundril in the grooves of the headstock, rising and falling only with the
different size of rollers, must divide correctly. The pedestal with the anti-
friction wheels, and the headstocks with the maundril through the grooves,
and the index made to fit well with a long boss screwed up with a nut on
the maundril, and index for slashing, all move together, with the adjusting
table, independent of every other part of the machine, by means of an apparatus
at one end of the table, which table moves on a pivot in the centre of the
machine. In ruling longitudinally, I place the roller to be engraved for a
second color within the chucks of the maundril, and also on the antifriction
rollers, the maundril being well secured by the index, the dividing screw being
set at liberty, a mark is then made on the margin of one end of the roller
by the steel point made to fit well into the socket of the black lead lever, the
carriage then to be moved to the other end of the roller, and a mark made
also, for the purpose of proving the exact distance of the variation of the
engraved roller from the parallel or horizontal line, as will be seen from the
engraved roller when placed between the antifriction wheels on the adjusting
table. I place the engraved roller without the maundril, say, with a small
plate pattern engraved on it, that has been side traversed, requiring one or
more rollers to fit on the antifriction wheels, and release the carriage from
the dividing sorew, and put the driving screw in action by screwing the chops
of the nut down to the screw by the apparatus; for that purpose, place the

page_text: steel point on to some part of the engraving that will be most likely to shew
the line exactly, move the adjusting table by the apparatus at the end of the
said table, draw the carriage the full length of the roller, until the exact lines
of the engraving have been got and the engraved roller removed. I then
place the roller, fixed within the chucks, on the antifriction wheels, and that
has to be engraved, and set the point exactly into one of the marks before
made on the margin, and move the carriage to the other end of the roller
by the rack and pinion or driving screw; the exact distance will then be seen
of the variation from the horizontal or parallel marks on the margin of the
other end. The adjusting table and roller being, say, half an inch out of the
parallel in the whole length of the roller, which half inch must be gradually
given at each division, and be got in the full length of the roller by the
adjusting index attached to the worm rack, segment, and slide, that will move
the pitch of the maundril index to the distance required at each division
across the roller; the punching lever will then give the stroke exactly on the
top centre of the roller; the adjusting table is then brought back to its
horizontal position and locked, the driving screw to be set at liberty by the
box or nut being opened from the screw, or the rack and pinion released.
The dividing screw must then be put in action, by being secured to the
carriage by the means adopted for that purpose.
When the dividing screw
is in operation the rack and pinion or screw for moving the carriage is always
to be set at liberty; the index on the maundril end giving the divisions of
the pattern, the regulating index and screw only correcting the variations
gradually at the division of each sketch. For the ordinary four, five, or more
colors the adjusting table is not required, the rollers being simply fixed
between the chucks of the maundril without loss of time. The punching
lever has a socket or boss to receive an apparatus that holds a pin with a
broad shoulder, to prevent the sinking of the surface of the roller by the blow
from the punching lever, which is raised by a chuck made to answer the
purpose, working on the carriage that carries the levers, the said chuck
having a tube with a grooved rod passing through the tube, having a key or
nib to fit the groove. The said tube works in bearings on the carriage of the
machine, and with a lever fixed at the index end, so that an ordinary workman,
having the index and wheel for side divisions, the lever to work the chuck,
and a handle for the driving screw all at hand, has never to move from the
index during the time he is dividing and punching a roller.
In another modification of the dividing machine I employ a weight and
chain, worked both ways by the handle of a wheel studded to work into the
chain, the said chain to be attached to the chuck lever that works on a stud

page_text: pin on the carriage and under the punching lever, for the purpose of raising
the punching lever to give the stroke, the chuck lever having a wheel, band,
and weight on the other side, attached to counterbalance the lever. The
black-lead pencil lever is also for the purpose of dividing the sketches cor-
rectly on the paper, which is fastened to the roller by india-rubber belts, with
or without hooks and eyes, gum, or other suitable substance; which lever is
intended to rule also the paper sketches and rollers for hand engraving, by
placing the paper for the corrected sketch on the roller after it has been
turned to the size required. I rule the sketch to the distance sideway, and
divide it in the round, according to the number required for the pattern, then
with the knife lever I cut the guages for the steel die that has to be turned in
a lathe to the exact size of the sketch and roller. When I have cut with the
knife across, I unlock the knife by a small lock lever, the socket of which is
so constructed with a stop that it can be turned from cutting horizontally to
cutting round the roller in a moment, thus avoiding much loss of time and
inaccuracy, which cannot be avoided by the methods now generally adopted.
"
In top pressure mill engraving machines, instead of the dividing apparatus
and turning handle being at the end of the machine as at present, I place
them on the mill carriage, thereby enabling the machine man to divide and
shift the carriage without requiring him to go to the end of the machine
to divide or turn. The machine man having the turning handle and dividing
apparatus on the carriage, can move the roller or carriage by either handle
with ease and certainty to any part of a sketch he may require to fit in
his mill or pitch, when marking on by pitch pius, and by having all under
his own eye, will give great facility in marking on or re-entering "bump"
and other mills, instead of the uncertain rocking or turning of a helper,
who will not be required as at present. These arrangements do not apply
to dodging or eccentric machines. I also manage the levers so that the
machine man has not to remove the weight as at present in raising the mill
frame lever from the roller, consequently causing great economy of time. A
screw on the carriage, by being turned one-half round by a ball lever, sets the
exact distance for fitting in the mill. In the mill frame steps I have certain
improvements, which consist in having springs attached to the pivot caps that
carry the mill, with nuts or screws to adjust the fall or otherwise in the steps,
and will also keep the mill in a proper position for fitting in and giving great
assistance to the machine man in the work. I also employ a very compact
arrangement of side pressure mill engraving machine, with apparatus for
dividing for bumping, and segment for holding the fingers. I also arrange a
very compact and efficient machine, in which the mill acts upon the under side

page_text: of the roller, which roller turns on its own bearings between two or more anti-
friction wheels. The steps in the slide of the headstock being for the purpose
of steadying the shaft of the maundril when driving, and giving facility for its
removal.
The nature of these improvements will be more clearly understood by
reference to the accompanying eleven Sheets of outline Drawings, and letters
of reference thereon, in which the letters refer to each Figure separately, in
which Fig. 1 is a front elevation of my improved dividing and punching
machine; Fig. 2 is a plan of the same; and Fig. 3 is an end view thereof;
Fig. 4 represents a roller divided; Figs. 5, 6, and 7 are detached views of a
driving screw and nut; Fig. 8 is a back elevation of another modification of
my dividing and punching machine; Fig. 9 is a plan; Fig. 10 an end view
of the same; Fig. 11 is a front elevation of a top pressure mill engraving
machine, shewing my improvements; and Fig. 12 an end view of the same;
Fig. 13 is a view of a worm and segment in conjunction with an index for
slashing; Fig. 14 is a back elevation of my improved side pressure mill
engraving machine; Fig. 15 is an end view of the same; and Fig. 16 a part
detached, shewing the index and apparatus for dividing for bumping; Figs.
17, 18, 19, and 20 are views of improved mill frame steps; Fig. 21 is a front
elevation of part of a mill engraving machine, in which the mill acts upon
the
under side of the roller; Fig. 22 is an end view of the same; Fig. 23 is a
section of my improved maundril, also shewing other chucks placed over the
chucks on the shaft for the purpose of holding large handkerchief or other
rollers. In Figs. 1, 2, and 3, representing one of my improved dividing,
punching, and engraving machines, is shewn one of my improved maundrils,
the shaft of which is shewn at a, having a part enlarged and coned so as to
form a chuck b, the other chuck c being loose, and is kept up to the roller d
by means of the nute and washer f; the antifriction wheels or bearings for the
roller are shewn at g, the adjusting table at h, the maundril necks moving in
the slots i of the main frame. As before said, both chucks may be loose and
kept up to their places by nuts and washers. k represents the index for
dividing the roller in the round; 1, the index for slashing; m, the ball weight
of the index point; n, the dividing screw; o, the slide; p, the carriage; q, the
rod, worked by the chuck lever r, for raising the punching levers s. The black-
lead lever is shewn at t, the knife at u, and the rack for moving the carriage
at v. Instead of the rack v, the screw w, in Figs. 5, 6, and 7, may be employed
with the nut box x. In Figs. 8, 9, and 10, representing another modification
of my improved dividing and punching machine, I work the chuck and
punching levers by a weight a and chain 6, worked both ways by the handle of

page_text: a wheel c, studded to work into the chain, the said chain to be attached to the
chuck lever d, that works on a stud pin e on the carriage f, and under the
punching lever for the purpose of raising the punching lever 9 to give
the stroke, the chuck lever having a rope and weight on the other side attached
to counterbalance the lever. In top pressure mill engraving machines the
dividing apparatus and turning handle are placed on the mill carriage repre-
sented at Figs. 11 and 12, instead of being at each end of the machine. The
mill carriage is shewn at h, the turning handle at i acting on the driving
wheel k, working in another wheel 1, upon the shaft of which is the wheel m,
driving the wheel n at the end of the shaft of the maundril, thereby giving
motion to the roller o. p is the wheel for the dividing handle, working into the
wheel q on the shaft r, at the end of which is the wheel s, working in the
wheel t, to which the dividing screw is attached. The mill frame lever is
shewn at u, working on the fulcrum v, which is raised, according to the size
of the roller, by the screw w and nuts x. The mill frame lever is raised and
lowered by means of the screw y, acted upon by the lever z. The top of the
screw y acts upon the lever a', connecting rod 6', and lever c', which is
connected to the mill lever u by the connecting rod d'. In Figs. 14 and 15,
I represent a very compact arrangement of a side pressure mill engraving
machine, the mill frame being shewn at a, the mill carriage at b, the mill
frame lever at c, the screw for raising and lowering the same at d, and the
weight for giving effect to the levers at e. In Fig. 16, shewing the index and
apparatus for dividing for bumping, the index is shewn at f, and the segment
for holding the fingers at 9. In the mill frame steps, represented in Figs.
17 and 18, the springs are shewn at h, and the rods which connect them with
the pivot caps at i. In Figs. 19 and 20, the springs le are of india-rubber
or other elastic material. The mill is guided by a slotted rod m, forming its
own pivot cap, the rod m being kept in its place by screws n, and furnished
. with a lock screw o, for the purpose of setting the mill at any distance
required. In Figs. 21 and 22, representing part of a mill engraving machine,
in which the mill acts upon the under side of the roller, the mill is shewn at p,
the roller at g, the antifriction rollers at r, the step slide at s, and the screw
for adjusting the steps at t. The mill frame levers are shewn at u, the weight
being put on and taken off by means of the screw v and lever w. In Fig. 23,
representing my improved maundril, the shaft is shewn at x, the ordinary balls
or cone chucks at y, over which are placed the larger bell or cone chucks z,
for the purpose of holding larger rollers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Barber in the Great Seal Patent Office on the
17th March 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BARBER, of the City of Manchester, in the County of Lancaster, Engraver to
Calico Printers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of September, in the year of our
Lord One thousand eight hundred and fifty-six, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said John Barber, Her special licence that I, the said John Barber, my
executors, administrators, and assigns, or such others as I, the said John
Barber, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MACHINERY OR
APPARATUS FOR MILL AND OTHER ENGRAVING, PUNCHING, DIVIDING, AND RULING
ROLLERS, EITHER FOR HAND OR MACHINE ENGRAVING; AND AN IMPROVED MAUNDRIL
USED IN MILL, ECCENTRIC, AND OTHER MACHINERY EMPLOYED IN ENGRAVING ROLLERS
FOR PRINTING AND EMBOSSING CALICOES AND OTHER FABRICS," upon the condition
(amongst others) that I, the said John Barber, by an instrument in writing
under my hand and seal, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said John Barber, do hereby declare the
nature of my said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
(that is to say):-
I obtain encreased facility in dividing and punching the pitch pins on the
rollers for engraving by mill and other machines, and in the setting out for
hand and other engraving, by an improved method of securing the roller to the
maundril. Instead of the usual box maundril made in segments or wedges, and
coned inside to fit the inside circle of the roller, I fasten the roller on the
maundril by a bell chuck or chucks, formed so as to grip the whole outside

page_text: coned circle of the roller, the chuck being coned inside to receive rollers of
different sizes, one of the said chucks either forming part of the maundril or
not, as required. The said loose chuck or chucks having a long barrel bored
and made to fit the shaft of the maundril, one end of which is screwed, and has
a washer or washers to fit, with a flange to receive the sunk part of the nut
when one loose chuck is used, the sharp edges being taken off the outside
circle of the roller by the tool when turned off in the usual way. When the
roller is forced by the nut of the maundril into its bed in the chuck, the maundril
will be placed in the centre of the roller, and be prevented from working back
by set screws in the flange of the washer, which are screwed down to the sunk
part of the nut. I place the roller with the maundril between two antifriction
wheels on the adjusting table, the maundril neck working in a groove in the
headstock to prevent end play of the maundril and roller, or the maundril may
work on its own bearings in pedestals without antifriction wheels. I also
place on the carriage two pedestals with screws and levers, that raise and lower
the maundril and roller, and afford great facility for placing and removing
rollers from the machine. The maundril has two collars at the index end, made
to fit well upon the ribs of the headstock, to prevent end play of the maundril
and roller, which, working on its own bearings, and the shanks of the maundril
in the grooves of the headstock rising and falling only with the different size of
rollers, must divide correctly. The pedestal with the antifriction wheels, and
the headstocks with the maundril through the grooves, and the index made to
fit well, with a long boss screwed up with a nut on the maundril, and index for
slashing, all move together with the adjusting table independant of every other
part of the machine, by means of an apparatus at one end of the table, which
table moves on a pivot in the centre of the machine. In ruling longitudinally,
I place the roller to be engraved for a second color within the chucks of the
maundril, and also on the antifriction rollers, the maundril being well secured
by the index, the dividing screw being set at liberty; a mark is then made on
the margin of one end of the roller by the steel point, made to fit well into the
socket of the black-lead lever; the carriage then to be moved to the other end
of the roller, and a mark made also, for the purpose of proving the exact
distance of the variation of the engraved roller from the parallel or horizontal
line, as will be seen from the engraved roller when placed between the anti-
friction wheels on the adjusting table. I place the engraved roller without the
maundril, say, with a small plate pattern engraved on it that has been side
traversed, requiring one or more rollers to fit it on the antifriction wheels, and
release the carriage from the dividing screw, and put the driving screw in

page_text: action by screwing the chops of the nut down to the screw by the apparatus
for that purpose. To place the steel point on some part of the engraving that
will be most likely to shew the line exactly, move the adjusting table by the
apparatus at the end of the said table, draw the carriage the full length of the
roller, until the exact lines of the engraving have been got and the engraved
roller removed. I then place the roller, fixed within the chucks, on the anti-
friction wheels that have to be engraved, set the point exactly into one of the
marks before made on the margin, and move the carriage to the other end of
the roller by the rack and pinion or driving screw, the exact distance will then
be seen of the variation from the horizontal or parallel marks on the margin of
the other end. The adjusting table and roller being, say, half an inch out of
the parallel in the whole length of the roller, which half inch must be gradually
given at each division, and be got in the full length of the roller by the adjust-
ing index attached to the worm rack, segment, and slide, that will move the
pitch of the maundril index to the distance required at each division across the
roller; the punching lever will then give the stroke exactly on the top centre
of the roller; the adjusting table is then brought back to its horizontal position
and locked, the driving screw to be set at liberty by the box or nut being
opened from the screw, or the rack and pinion released. The dividing screw
must then be put in action by being secured to the carriage by the means
adopted for that purpose. When the dividing screw is in operation, the rack
and pinion, or screw for moving the carriage, is always to be set at liberty. The
index on the maundril end giving the divisions of the pattern, the regulating
index and screw only correcting the variations gradually at the division of each
sketch. For the ordinary four, five, or more colors, the adjusting table is not
required, the rollers being simply fixed between the chucks of the maundril
without loss of time. The punching lever has a socket or boss to receive an
apparatus that holds a pin with a broad shoulder, to prevent the sinking of the
surface of the roller by the blow from the punching lever, which is raised by a
chuck made to answer the purpose, working on the carriage that carries the
levers, the said chuck having a tube with a grooved rod passing through the
tube, having a key or nib to fit the groove; the said tube works on bearings on
the carriage of the machine, and with a lever fixed at the index end, so that
an ordinary workman, having the index and wheel for side divisions, and the
lever to work the chuck, and a handle for the driving screw all at hand, has
never to move from the index during the time he is dividing and punching a
roller.
In another modification of a dividing machine, I employ a weight and chain,

page_text: worked both ways by the handle of a wheel studded to work into the chain,
the said chain to be attached to the chuck lever that works on a stud pin on
the carriage, and under the punching lever, for the purpose of raising the
punching lever to give the stroke, the chuck lever having a wheel, band, and
weight on the other side, attached to counterbalance the lever. The black-lea
pencil lever is also for the purpose of dividing the sketches correctly on the
paper, which is fastened to the roller by india-rubber belts, with or without
hooks and eyes, gum, or other suitable substance, which lever is intended to
rule also the paper sketches or rollers for hand engraving, by placing the paper
for the corrected sketch on the roller after it has been turned to the size
required. I rule the sketch to the distance sideway, and divide it in the round,
according to the number required for the pattern, then with the knife lever I
cut the gauges for the steel die that has to be turned in a lathe to the exact
size of the sketch and roller. When I have cut with the knife across, I
unlock the knife by a small lock lever, the socket of which is so constructed
with a stop that it can be turned from cutting horizontally to cutting round
the roller in a moment, thus avoiding much loss of time and inaccuracy, which
cannot be avoided by the methods now generally adopted. I give the distance
of the horizontal cuts from an apparatus on the carriage for raising the knife
lever from the paper on the roller, and giving the exact distance of each cut,
the apparatus corresponding with the dividing screw exact; the knife is
then unlocked, the carriage brought back to the same part, and the distance
of the circular cuts given from the dividing screw, ten gauges being cut
at the same time, five for mills, and five for dies, hanging together like
postage stamps. In top pressure mill engraving machines, instead of the
dividing apparatus and turning handle being at the end of the machine,
as at present, I place them on the mill carriage, thereby enabling the
machine man to divide and shift the carriage without requiring him to go
to the end of the machine to divide or turn. The machine man having the
turning handle and dividing apparatus on the carriage, can move the roller or
carriage with ease and certainty to any part of a sketch he may require to fit
in his mill or pitch, when marking on by pitch pins, and by having all under
his own eye, will give great facility in marking on or re-entering bump and
other mills, instead of the uncertain rocking or turning of a helper, who will
not be required, as at present. These arrangements do not apply to dodging
or eccentric machines. I also manage the levers so that the machine man
has not to remove the weight, as at present, in raising the mill frame lever
from the roller, consequently causing great economy of time. A screw on

page_text: the carriage, by being turned one-half round by a ball lever, sets the exact
distance for fitting in the mill. In the mill frame steps I have certain
improvements, which consist in having springs attached to the pivot caps that
carry the mill, with nuts or screws to adjust the fall, or otherwise, in the
steps, and will also keep the mill in a proper position for fitting in, and giving
great assistance to the machine man in the work. I also employ a very
compact arrangement of side pressure mill engraving machines, with apparatus
for dividing, for bumping, and segment for holding the fingers. I also
arrange a very compact and efficient machine, in which the mill acts upon the
under side of the roller, which roller turns on its own bearings between two
or more antifriction wheels. The steps in the slide of the headstock being
for the purpose of steadying the shaft of the maundril when driving, and giving
facility for its removal. These improvements will be clearly understood by
reference to the accompanying five Sheets of Drawings, with the figures
and letters of reference thereon, the said letters referring to each figure
separately.
In (Sheet 1) I represent my improved maundrils and their application. In
all the Figures the shaft is shewn at a; the roller at 6; the chucks, con-
sisting of cones of various sizes, at c; the washers at d; the nuts at e; and
the set screws at f. Fig. 1 is a section of one of my improved maundrils, and
Fig. 2 an external view of the same. In Fig. 3, the dotted lines shew the
roller, when new, the same size as in Figs. 1 and 2, the external full lines
representing it when worn or turned down, and also the position of the groove
at the ends of the roller, into which the cones fit when required, either for
turning off or engraving. Fig. 4 is another modification of maundril. Fig. 5
is a view of the shaft and nuts detached. Fig. 6 is an external view of Fig 4.
Figs. 7, 8, 9, 10, 11, 12, 13, and 14 are transverse sections and external
views of Figs. 4 and 6. Fig. 15 shews the small ends of the cone chucks,
acting upon or holding the roller.
(In Sheet 2), representing my improved top pressure mill engraving machine,
Fig. 1 is a plan; Fig. 2, a longitudinal elevation; Figs. 3 and 4, end views;
and Fig. 5, a part detached. In this machine, the dividing apparatus and
turning handle are placed on the mill carriage, instead of being at each end
of the machine. The mill carriage is shewn at h; the turning handle at i,
acting on the driving wheel k, working in another wheel 1, upon the shaft of
which is the wheel m, driving the wheel n, at the end of the shaft of the
maundril, thereby giving motion to the roller o; p is the wheel for the dividing
handle, working into the wheel q, on the shaft r, at the end of which is the

page_text: wheels, working in the wheel t, to which the dividing screw is attached. The
mill frame lever is shewn at u, working on the fulcrum v, which is raised,
according to the size of the roller, by the screw w and nuts x. The mill
frame lever is raised and lowered by means of the screw y, acted upon by the
lever z. The top of the screw y acts upon the lever a¹, connecting rod b', and
lever c', which is connected to the mill lever u by the connecting rod d'; at
e are bevil wheels, employed for driving for straight round work, reversing,
and bumping. I also employ a small steam engine, forming a portion of the
machine, the cylinder of which is shewn at f¹, the eccentric at g', and the
handle governing the throttle valve at h', thus giving the machine man com-
plete command over the speed of the work, the indicator
his eye.
being close under
In Sheet 3, representing an improved side pressure mill engraving machine,
Fig. 1 is a plan; Fig. 2, a longitudinal elevation; and Fig. 3, an end view
of the same.
The mill frame is shewn at a, the mill carriage at b, the mill
frame lever at c, the screw for raising and lowering the same at d, and the
weight for giving effect to the levers at e. The handle facts upon the toothed
wheel g, working into the toothed wheel h, giving motion to the shaft i and
wheel k, driving, by means of the wheel 1, the maundril m and roller n, which
can be reversed at pleasure by means of the bevil gear o and coupling box p.
When the coupling box is out of gear, the roller can be brought round by the
handle with ease and facility, the indicator q being immediately under the
eye of the machine man. There are screws r, for acting upon the steps s, for
the purpose of quickly screwing up or removing the roller; the coupling box
lever is shewn at t, and the rod which extends across the machine at u, having
handles at v. The mill acting upon the roller is shewn at w.
In Sheet 4, Fig. 1 is a plan of my improved dividing, punching, and en-
graving machine, and Fig. 2 is a longitudinal elevation of the same, in which
is shewn one of my improved mauudrils, the shaft of which is at a, having a
part enlarged and coned, so as to form a chuck b, the other chuck c being
loose, and is kept up to the roller d by means of the nut e and washer f.
The bearings for the roller are shewn at g, the adjusting table at h, the
maundril necks moving in the slots i of the main frame. As before said
both chucks may be loose, and kept up to their places by nuts and washers.
k represents the index for dividing the roller in the round; 1, the index for
slashing; m, the ball weight of the index point; n, the dividing screw; o, the
slide; p, the carriage; q, the rod worked by the chuck lever r, for raising the
punching levers s. The black-lead lever is shewn at t, the knife at u, and

page_text: the screw for moving the carriage at v; at w are screws and levers for the
giving facility in changing; at æ is a spring in a barrel attached to the rod
of the punching lever, for the purpose of returning the chuck after the lever
has struck the roller, giving great facility in pitching the index. Instead of
the screw v, the rack y, in Fig. 4, Sheet 3, may be employed.
In Sheet 5, Figs 1 and 2 are elevations, and Fig. 3, a plan, of my improved
mill steps, and Figs. 4 and 5 are elevations, and Fig. 6, a plan of another
modification of the same. a is the mill shaft; b, the step; and c, the cap,
kept in its place by the rods d, suspended by the spiral springs e, which keep
the mill square to the work on the roller, and also give the required elasticity
for fitting in. In Figs. 4, 5, and 6, the springs k are of india-rubber or other
clastic material. The mill is guided by a slotted rod m, forming its own pivot
cap, the rod m being kept in its place by screws n, and furnished with a lock
screw o, for the purpose of setting the mill at any distance required.
In Fig. 7, Sheet 5, representing part of a mill engraving machine, in which
the mill acts upon the under side of the roller. The mill is shewn at p, the
roller at q, the step slide at s, and the screws for adjusting the steps at t; the
mill frame levers are shewn at u, the weight being put on and taken off by
means of the screw v and lever w.
Having thus fully described the nature and particulars of my said Invention,
and the manner in which the same is to be performed, I desire it to be
distinctly understood that I do not confine myself to the exact details herein
set forth, as such may be varied or modified without departing from the
principle thereof; but I claim as my Invention, and which to the best of my
knowledge and belief has not been hitherto used within the realm,—
Firstly, the arrangement and construction of the machine for dividing and
punching the pitch pins or rollers for engraving by mill and other machines,
and for cutting the gauges and dividing the sketches.
Secondly, the maundril, with its cone fitting into a coned groove.
Thirdly, the arrangement of the levers, and the facility of the ball, lever,
and screw, as applied to engraving machines.
Fourthly, the indicator, as attached to the carriage of the machine for
bumping, and as applied to the roller as an indicator for fitting in.
Fifthly, the driving and reversing motion for bumping and straight round
work.
Sixthly, the direct application of the steam engine to the machine, instead
of the secondary motion from shafts and straps.
Seventhly, the application of springs in the steps to give the necessary

page_text: elasticity and balance to the mill, as all such improvements are herein
described, and illustrated in the accompanying five Sheets of Drawings.
In witness whereof, I, the said John Barber, have hereunto set my hand
and seal, this Sixteenth day of March, in the year of our Lord One
thousand eight hundred and fifty-seven.
Signed, sealed, and delivered by the within-
named John Barber, in the presence of
JOHN BARBER. (L.S.)
E. J. HUGHES, Patent Agent,
Manchester.