Year: 1888

page_text: Date of Application, 14th Jan.. 1888
Complete Specification Left, 15th Oct., 1888
Complete Specification Accepted, 23rd Nov., 1888
I GEORGE MOULTON of 76 Whitley Street, Rochdale Road, Manchester in the
County of Lancaster, Engineer and Tool Maker do hereby declare the nature of this
Invention to be as follows:-
My Invention relates to the so termed Pantagraph Engraving Machines which are
used in the tracing or engraving of designs upon articles preparatory to the subsequent
etching operations as is well understood. The principal object of my invention is to
render the machine better adapted to operate upon comparatively small objects, as for
example my improved machine is well adapted for operating upon glass articles but I
do not limit myself to the indicated uses for the machine. I carry the article to be
engraved upon a table or carrier which is fitted to revolve upon a vertical axis and I
move the tracer vertically the two motions being derived from the pantagraph apparatus.
Two or more tables may be arranged at different levels and one two or more tables may
be mounted at one level. The tables in a set at one level are connected together and are
also connected with the pantagraph apparatus. One tracer only may act upon each article
or two or more. A number of traces may be arranged around the axis of revolution of one
table and such number may correspond to the repeats of the pattern or to a divisor of
such repeats. In the arrangement which I have adopted when carrying my invention
into effect two or more sets of tables are arranged one above another and the tables in
each set are connected together in couples by means of wheels and bands the spindle
of a wheel in each couple being connected by means of a wheel and band with a
vertical shaft which is connected with the pantagraph apparatus so that the tables are
caused to revolve in unison. The rings, frames or parts which carry the tracers or
tracer levers are all connected with a cross head or part which is acted upon by means
of a band wheel or a sector lever which is weighted or acted upon to balance the
vertically moving load. This wheel or lever is connected by means of a wheel and
band or bands with the pantagraph apparatus. The traces are carried by bell-crank

page_text: levers and one arm of each lever projects above a plate or pusher. All such plates in
the series are mounted to move vertically and are all connected together by means of
rods or connections and are connected with a common lever which can be acted upon
to throw out of action or to bring into action all the tracers simultaneously.
Dated this 13th day of January 1888
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.
COMPLETE SPECIFICATION.
Improvements in Pantagraph Engraving Machines.
1 GEORGE MOULTON of 76 Whitley Street, Rochdale Road, Manchester, in the
County of Lancaster, Engineer and Tool "Maker, 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 and accompanying
drawings
My Invention relates to the so termed Pantagraph Engraving Machines which are
used in the tracing or engraving of designs upon articles preparatory to the subsequent
etching operations as is well understood. The principal object of my invention is to
render the machine better adapted to operate upon comparatively small objects, as for
example my improved machine is well adapted for operating upon glass articles but I
do not limit myself to the indicated uses for the machine. carry the article to be
engraved upon a table or carrier which is fitted to revolve upon a vertical axis
and I move the tracer vertically the two motions being derived from the pantagraph
apparatus. Two or more tables may be arranged at different levels and one two or
more tables may be mounted at
one level.
The tables in a set at one level
are connected together and are also connected with the pantagraph apparatus. One
tracer only may act upon each article or two or more. A number of tracers may be
arranged around the axis of revolution of one table and such number may correspond
to the repeats of the pattern or to a divisor of such repeats.
The nature of my Invention will be best understood when the said invention
is more fully described with reference to the three sheets of drawings which are
attached hereto.
In the said drawings Fig. 1 represents a side elevation of my improved engraving
apparatus applied to a pantagraph machine which is not entirely shown for want of
space. Fig. 2 is a sectional plan of the engraving apparatus and exhibits the

page_text: pantagraph machine more fully. It must be understood that the pantagraph machine
may be of any suitable construction and it has not therefore been considered necessary
to show it in its entirety in the drawings.
In the said drawings a. a are tables which carry the work to be engraved and are
mounted to vibrate upon vertical axes. In the example eight of these tables are
arranged in sets of four at two levels one set being carried above the other set. The
left hand table in the lower set is left out in Fig. 1 in order to show the template more
clearly. This template will be referred to hereinafter. The method which I have
adopted in the mounting of these tables is illustrated in Fig. 3 in which is also
illustrated one of the tracers and certain of the connected parts. The table is attached
to the upper end of a hollow shaft a which is provided with two steel centres a² a².
One of these centres rests in a seating in the upper end of a post which is inside
the said hollow shaft and the other centre is adjusted to work in a second seating
formed in the lower end of the post this latter centre being carried by an arm a³
which is attached to a wheel y upon the lower end of the hollow shaft. It will be seen
that the table will be at liberty to move with very little friction partly around the
vertical axis passing through the points of the two centres. The four posts which
carry the four tables in the lower set are secured by their lower ends to the bed or
framing of the machine. The four upper posts are secured to a frame which is
attached to a central fixed column c. The tables are provided with sliding jaws or
dogs or are otherwise suitably adapted to hold the work. In the case of one of the
tables in Fig.
a glass globe is represented as fixed in position to be engraved. The
traces are carried by annular parts d which I will term tracer carriers. The four
tracer carriers in each set are attached to a cross head e and the two cross heads are
connected together by means of rods ff. Each tracer is carried by a bell-crank
lever which is hinged to a bracket gl which is secured upon the tracer carrier and is
adjustable thereon in position around the vertical axis of motion of the table a and
also toward and from the said axis. In the case of one of the tables two tracers are
shown but it must be understood that all the eight tracer carriers are similarly
provided one two three or more tracers being applied around each table as may be
required. What will term the vertical arm of the lever g. carries the tracer the end
of the horizontal arm projecting above a plate h. The tracer is kept in contact with
the work by the action of a spring g which bears against the said vertical arm.
weight might be used in place of this spring. It will be seen that if the plate / were
raised the tracers would be withdrawn from the work and on the contrary if the plate
were lowered the tracers would be permitted to return toward the work. The said
plate is provided with a hollow boss which is fitted to slide within the eye of the tracer
carrier as seen in Fig. 3. All the eight plates in the two sets are connected together
by means of levers and rods so that when one moves vertically all the eight plates
move in unison. This connection is effected by means of levers i. which are hinged
at j. j. and are connected by their shorter arms with the bosses of the plates h. The
ends of the longer arms are coupled together and to vertical rods which connect
together the levers and which are in connection with the two sets of tables. The
lever which is to the left hand in Fig. 1 is fixed upon a shaft which extends from
side to side of the arrangement and also carries the corresponding lever upon the other
side of the machine. Upon the same shaft is fixed a lever j2 which is provided with a
bowl which is kept in contact by the weight of the parts with a template k which
is made of the same contour as the side of the work to be engraved. It will be seen
that if the cross heads e. e are raised in a vertical line the eight tracer carriers d will
have the same movement and the tracers and the bowl 3 will be raised in the same
degree in contact with the work and the template. As the said bowl moves in contact
with the template it follows the curvature or contour of the same and imparts a
rocking movement to the shaft j' whereby the levers upon the said shaft raise or lower
the plates with which they are connected and by their connections with the other
levers and the connecting rods effect the corresponding raising or lowering of all the
other plates in the two sets. The levers g are so proportioned as that the movements
of the plates shall correspond with the movements of the tracers. The result of this
A

page_text: 1)
is that the plates follow the ends of the horizontal arms of the levers g in their move-
ments so that the said plates are always but a short distance from the said ends of the
arms and are in positions to act promptly when it is desirable to withdraw the tracers
from the work. If preferred the use of a template might be dispensed with. The
engraving or tracing upon the work is effected by a combination of the rotating or
rocking movements of the tables a and the vertical movements of the tracors due to
the movements of the cross heads e. e which carry the tracer carriers as aforesaid.
The cross heads e e are provided with spindles e¹ upon which are fixed wheels e* which
run upon vertical planed bars . whereby the said cross heads are guided to move up
and down in a straight line. The rocking movements of the tables is derived from a
wheel seen in Fig. 2. This wheel is connected by steel bands with the reciprocating
frame m which moves in a direction across the machine as indicated by the arrows.
The vertical movements of the said tables is derived from the bars n of a frame which
moves in directions at right angles to the movements of the frame m. These parts m
and roll upon wheels and are connected with the tracer arm of the pantagraph machine.
In Fig. 2 represents a part of the said tracer arm the end carrying the tracer not
appearing for want of space in the drawing. The movements are conveyed to the frames
by means of inclined adjustable slides so that the movements of the tracer over the
pattern are conveyed in a diminished ratio to the frames as is well understood the
construction of the pantagraph apparatus not being claimed herein as novel. One
of these inclined slides appears at in Fig. 2. This slide transmits movement to
the frame m which is connected by means of bands with the wheel and this wheel is
connected by other bands with two bars p. which are mounted to move endwise in a
straight line with a minimum of friction as in ordinary pantagraph machines. These
bars p. p. are connected by bands with wheels . q each bar connecting two of the last
named wheels with the main wheel Z. It will be seen that when the wheel / is rotated
to any extent in either direction all the four wheels g. 7 will receive a corresponding
circumferential movement in the same direction. The wheels 7. 7 are fixed upon the
hollow shafts which carry the four tables in the lower series. The wheel is fixed
upon a shaft which extends upward and carries a second wheel which is connected
with four wheels 7' which are upon the hollow shafts which carry the tables in the
upper set. The effect of this arrangement is that all the eight tables receive motion
from the wheel which is actuated by the pantagraph as aforesaid so that the work
upon the tables is caused to revolve partly around the axes of movement of the said
tables when the frame m is moved. The cross heads e. e which are connected together
by means of the rods f. fas aforesaid are raised and lowered by means of a wheel
which is fixed upon a shaft. Upon the same shaft are fixed two wheels s. s which
rest upon the pantagraph bars n. » so that as these bars move the said shaft is caused
to turn upon its axis. The connection of the two cross heads e. e is effected by means
of four rods two of these appearing in full in Fig. 1 the other two being indicated by
dotted lines. These latter two are extended downward and appear at ff in Fig. 2.
The lower ends of these rods are connected together by means of a bar and are
attached to one end of a band which passes over and is attached to the wheel and is
connected by its other end with a load t which is adjusted to balance the weight of the
cross heads e. e the tracer carriers d. d and all the other vertically, moving parts
carried by the said cross heads. It will be seen that when the bars n move in either
of the directions indicated by the arrows the cross heads e. e and as a consequence the
whole of the tracers on the levers g. will be raised or lowered as the case may be. It
will thus be apparent that as the pantagraph tracer travels over the pattern and the
parts men are moved to and fro the pattern will be re-produced upon the work by the
combination of the revolving motion of the work and the vertical movements of
the tracers. All the tracers can be withdrawn from action by means of a lever u
indicated by the dotted lines in Fig. 1. This lever may be adapted to be acted upon
by the foot of the operator. The upper end of this lever carries the template k.
When the front end of the lever that is the end which does not appear in the drawing
is depressed the template is moved in the direction indicated by the arrow and by
acting upon the lever effects the withdrawal of all the tracers by reason of their
1
?'

page_text: hereinbefore described connection with the lever . I do not confine myself to the
number of tables to carry the work in each set as there might be less than four or
there might be more than four. It will be seen that each of the bars p might be
connected with more than two band wheels or the wheel I might impart movement to
more than two bars fulfilling the office of the bars p. Also if preferred there might be
more than two sets of tables arranged at different levels but it is obvious that a multi-
plication of the tables would increase the work which the pantagraph apparatus would
have to do so that if there were too many tables there would be a difficulty in
correctly following the lines of the pattern. If preferred the tables carrying the work
might be raised and lowered and the tracer carriers be rotated or vibrated upon
vertical axes.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
(1.) The combination of parts arranged and acting substantially as and for the
purpose set forth and indicated hereinbefore and in the accompanying drawings.
(2.) The combination with a pantagraph apparatus of tables mounted to turn upon
vertical axes and of tracer carriers arranged to move up and down in the lines of the
said axes and provided with tracers adapted to operate upon work carried by the said
tables the said tables being connected by means of bands and wheels with a part of
the pantagraph apparatus moving in one line and the parts carrying the tracer carriers
being connected by means of bands and wheels with the part of the pantagraph which
moves at right angles to the part which gives motion to the said tables.
(3.) The tables arranged in a set of two or more connected together to turn in
unison upon vertical axes and connected with a pantagraph apparatus and the tracer
carriers also connected with such apparatus and arranged to move up and down
vertically such tracer carriers being adapted to receive tracers to operate upon work
contrally secured upon the said tables substantially as and for the purpose set forthi
and indicated.
(4.) The tables and tracer carriers as set forth in the third claiming clause hereof
arranged in two or more sets one above another substantially as and for the purpose
set forth and indicated.
(5.) The tables and tracer carriages when modified in formation and in the method
of mounting and actuating the same so that the tables shall be rotated upon vertical
axes instead of the tracer carriers and the latter shall be raised and lowered instead of
the tables the movements being derived from the pantagraph apparatus so that the
pattern is re-produced upon two or more articles carried by the tables substantially as
set forth.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.