Improvements in Pantographic Engraving Machines.
Year: 1889

page_text: Date of Application, 30th Apr., 1889
· Complete Specification Left, 29th Jan., 1890-Accepted, 1st Mar.,
1890
PROVISIONAL SPECIFICATION.
Improvements in Pantographic Engraving Machines.
I, WILLIAM GOUDIE, at the St. Rollóx Flint Glass Works, Glasgow, in the County
of Lanark, North Britain, Engraver, do' hereby declare the nature of this Invention
to be as follows, that is to say :-
My said Invention has for its object by means of improved appliances to adapt
pantographic engraving machines for engraving upon glass globes, wineglasses,
tumblers, jugs, and other articles of glass or other material having surfaces varying
more or less from simple globular or cylindrical forms.
My improvements can be applied to various kinds of pantographic engraving
machines but I prefer such as are of simple construction and which have appliances,
or can be easily fitted with appliances for varying the proportion between the guide
pattern and what is produced by the engraving points.
In one machine to which my improvements are very conveniently applicable the
tracer is attached to a pair of jointed pantograph parallelograms the fixed and acting
centres of which are adjustable for varying the proportion between the guide pattern
and the work, the acting centres being attached to a long beam which rests on steel
balls. Above the beam there is, according to one modification a horizontal shaft the
ends of which pass through blocks which are placed in vertical guide slots in end
frames, the shaft being fitted to move freely end ways through the blocks. Near its
ends the shaft has fixed on it cylindrical pulleys which rest on blocks fixed on the
beam, and as the beam is moved by the pantographs in any direction, any end way
motion is imparted as such to the shaft, whilst any backward or forward motion
causes a corresponding rotation of the shaft through the action of the beam blocks on
the pulleys.
A large number of glass globes or other articles are strung upon the shaft for the
purpose of being engraved simultaneously, and for the purpose of holding them
Securely and in a manner to obtain accurate work, a corresponding number of metal
disks are provided. The disks are made with bosses which are accurately fitted on
the shaft, on which they are fixed by pinching screws when adjusted with the globes
between them. Each disk has on one side of it a cover of rubber or other suitable
soft material for the larger end of a globe to bear against and on the other side there
is a slightly projecting boss to enter the smaller opening of the next globe, a rubber
ring being placed round the boss, and rubber rings of different sizes being provided
to suit different globes.
The engraving points, of which there are diametrically opposite sets are carried by
weighted levers on stationary centres as in some existing machines; but the bars
carrying the centres are adjustable so that the levers holding the engraving points
may be disposed in the best manner to suit the particular form of globe or other
article on which they have to operate.
When wine glasses, tumblers, or other articles which cannot be strung on a spindle
have to be engraved, the shaft herein before described as having globes strung upon it
is removed; and there is substituted for it a long journalled frame or holder, consisting
of two short end shafts or journals to be held in the slide blocks in the vertical guides
at the ends of the machine, the short shafts having fixed on them cylindrical pulleys
to rest upon and be actuated by the beam below, and the pulleys being connected by
5 a long side bar parallel to the axis, but at such a distance therefrom as to allow of
the glasses being placed centrally. Instead of one side bar there may be two
diametrically opposite side bars. A number of metal plates are provided for being
adjustably fixed on the side bar or side bars, by screw clamps, or in any other
convenient way; and these plates extend across the axis when they are in position,

page_text: and are by preference formed with circular recesses concentric with the axis. In
arranging a number of glasses to be simultaneously operated on by the machine disks
er rings of rubber or other suitable soft material are interposed between the glasses
and the metal plates, and first one article is placed in position against a fixed metal
plate and a second metal plate is adjusted so as to grip the article against the fixed
metal plate. Next the third metal plate is adjusted to grip the second glass between
it and the second metal plate, and the others are in succession gripped in a similar
manner; and the entire series can be operated on like one long cylinder, the several
acting points being of course adjusted to the several glasses or articles.
.
Plates and similar flat or nearly flat articles may also be engraved on the same
machine, such articles being simply fixed on a frame or support fixed on the beam
and moving horizontally and without rotation.
Dated this Twenty-ninth day of April 1889.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Pantographic Engraving Machines.
I, WILLIAM GOUDIE, at the St. Rollox Flint Glass Works, Glasgow, in the
County of Lanark, North Britain, 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, that is to say :—
My said invention has for its object, by means of improved appliances, to adapt
pantographic engraving machines for engraving upon glass globes, wine glasses,
tumblers, jugs, and other articles of glass or other material, having surfaces varying
more or less from simple globular or cylindrical forms.
My improvements can be applied to various kinds of pantographic engraving
machines, but I prefer such as are of simple construction, and which have appliances,
or can be easily fitted with appliances for varying the proportion between the guide
pattern and what is to be produced by the engraving points.
In one machine to which my improvements are very conveniently applicable, the
tracer is attached to a pair of jointed pantograph parallelograms the fixed and
acting centres of which are adjustable for varying the proportion between the guide
pattern and the work, the acting centres being attached to a long beam which rests
on steel balls. For some purposes a single pantograph parallelogram is sufficient.
The beam, in moving in correspondence with the pattern, imparts combined
longitudinal and rotatory movements to a horizontal shaft, on which a large number
of glass globes or other articles are strung for the purpose of being engraved
simultaneously, special appliances being provided for holding them securely and in a
manner to obtain accurate work. The engraving points, of which there are
diametrically opposite sets, are carried by weighted levers on stationary centres, as
in some existing machines; but the bars carrying the centres are adjustable so that
the levers holding the engraving points may be disposed in the best manner to suit
the particular form of globe or article on which they have to operate. There may be
three or more sets of engraving points arranged to act on three or more equidistant
parts of the globes or articles.
For wine glasses, tumblers, or other articles which cannot be strung on a spindle
a suitable modification of holding appliances is provided; and plates and similar flat
or nearly flat articles may also be engraved on the same machine, such articles being
simply fixed on a frame or support fixed on the beam and moving horizontally and
without rotation.
And in order that my said Invention and the manner of performing the same may
he properly understood 1 hereunto append four sheets of explanatory drawings to be
hereinafter referred to and representing pantographic engraving machinery as provided.
with my improved appliances.

page_text: Figure, 1, sheet 1, of the drawings is a plan showing parts of a machine as-
adapted for engraving glass globes; figure, 2, sheet, 2, is a sectional front elevation,
and figure, 3, sheet, 3, is an end elevation. Figures, 4, and 5, sheet 4, are a sectional
front elevation and a transverse-sectional elevation of parts for holding wine glasses,
tumblers, and the like; and figures, 6, 7, and 8, sheet 4, are a plan, an end elevation
and a sectional front elevation, showing parts of apparatus as modified for engraving
plates, and the like. In these drawings the same reference letters and numerals.
are used to mark the same or like parts wherever they are repeated.
In the modification shown in figures, 1, 2, and 3, a well known single pantograph
parallelogram, A, is employed to reduce and transfer the movements of the
tracer, A 1, carried by hand over the lines of the guide pattern, A 2, to a beam, B,
which rests on steel balls, B 1. Above the beam, B, there is a horizontal shaft, U,
the ends of which pass through blocks, C1, which are placed in vertical guide
slots, D, in end frames, D 1, the shaft, C, being fitted to move freely endways.
through the blocks, 1. Near its ends the shaft, C, has fixed on it cylindri al
pulleys, C2, which rest on transverse horizontal rails, B 2, formed on brackets, B 3,
fixed on the beam, B; and as the beam, B, is moved by the pantograph, A, in any
direction, any endway motion is imparted as such to the shaft by ribs or flanges, on
the rails, B2, acting on the edges of the pulleys, C2, whilst any backward or
forward motion causes a corresponding rotation of the shaft, C, through the action
of the rails, B2, on the cylindrical surfaces of the pulleys, C 2. One of these
pulleys, C2, (or each of them) has lines marked on its periphery dividing it into
aliquot parts, and an adjustable pointer, C3, fixed to the end frame, 1) 1, is provided
to facilitate the setting of the pulley and the shaft, C, and articles thereon so that
repeats of a pattern may be commenced at points accurately dividing the circum-
ference of a globe or other article into equal segments. The globes or articles, E, to
be engraved are strung upon the shaft, C, and are centered and fixed thereon by
means of metal disks, F, which are made with bosses accurately fitted on the shaft
on which they are fixed by pinching screws when adjusted with the globes, E,
between them. Each disk, F, has on one side of it a cover, F 1, of rubber or other
suitable soft material for the larger end of a globe, E, to bear against, and on the
other side there is a slightly projecting boss to enter the smaller opening of the next
globe, a rubber ring, F 2, of suitable shape being placed round the boss, and rubber
rings of different sizes being provided to suit different globes.
The engraving points, G, of which there are two diametrically opposite sets in the
modification shown in figures, 1, 2, and 3, acting respectively on the highest and
lowest parts of the globes, E, are carried by weighted levers, G 1, G 2, on stationary
centres, G 3, adjustable on longitudinal frame bars, G 4. The engraving points, G,
are not in contact with the globes, E, excepting when the operator depresses a
treadle, H, which is fixed to a rocking shaft, H 1, having fixed on its ends levers, H 2,.
connected by rods, H 3, to a longitudinal bar, H 4, provided with adjustable screw
pins to act on the upper engraving levers, G 1. A similar bar, H 5, acts reversely
on the lower engraving levers, G2, the two bars, H4, H 5, moving in vertical
guides, H 6, and the lower one, H 5, being acted on by cams, H 7, turned by levers, H 8,
moved by pins on the rods, H 3. The weights of the parts are so arranged that when
the operator takes his foot off the treadle, H, the longitudinal bars, H 4, H 5, move
so as to turn the levers, G 1, G 2, with the engraving points, G, out of contact from.
the globes, E.
When wine glasses, tumblers, or other articles which cannot be strung on a spindle
have to be engraved, the shaft, C, is removed, and there is substituted for it a long
journalled frame or holder such as is partly shown in figures, 4, and 5, and consisting
of two short end shafts or journals, J, to be held in the slide blocks, C 1, in the
vertical guide slots, D, at the ends of the machine, the short shafts, J, having fixed
on them cylindrical pulleys, C 2, to rest upon and be actuated by the beam (B)
below. The shafts, J, have also fixed on them disks, J 1, connected by a long side.
bar, J 2, parallel to the axis, but at such a distance therefrom as to allow of the
glasses, E1, E 2, being placed centrally. Instead of one side bar, J 2, there may be

page_text: two diametrically opposite side bars; and when there is only one, it and the parts on
it must be counterbalanced by means of weighted levers, J 3, so that the centre of
gravity of the parts carried by the end shafts, J, may be as nearly as possible in the
axis of those shafts. A number of metal plates, J 4, are provided for being adjustably
fixed on the side bar, J 2, by screw clamps or in any other convenient way; and
these plates, J 4, extend across the axis when they are in position, and are formed
with circular recesses or projections concentric with the axis. In arranging a
number of glasses, E1, E 2, to be simultaneously operated on by the machine, disks
or rings F 1, F 2, of rubber or other soft material are interposed between the glasses
and the metal plates, J 4; and first one article is placed in position against a fixed
metal plate, and a second metal plate is adjusted so as to grip the article against the
fixed metal plate. Next, the third metal plate, J 4, is adjusted to grip the second
glass, E 1, between it and the second metal plate; and the others are in succession
gripped in a similar manner; and the entire series can be operated on like one
long cylinder, the several engraving points, G, being of course adjusted to the several
glasses or articles, E 1, E 2.
The arrangement for engraving plates and similar articles will be understood from
figures, 6, 7, and 8. The plates, E3, are simply fixed down on a long metal plate, K,
which is carried by brackets, K 1, fixed on the beam, B, of the machine. In engraving
plates and similar disk like articles the guide pattern, A 3, may be conveniently in
the form of a quadrant or other sector of a circle to be shifted round as many times
as may be necessary to complete the tracing of the entire circular area.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In pantographic engraving machines, combining and arranging parts for holding
and engraving glass globes, wine glasses, tumblers, jugs, and other articles of glass
or other material, having surfaces varying more or less from simple globular or
cylindrical forms, substantially in the improved manner hereinbefore described.
2. The mode of holding a series of globes or other articles in a pantograph engraving
machine, in which they are placed between a series of metal disks adjustably fixed
on a shaft with interposed rubber or equivalent material so as to grip the articles,
the parts being constructed, arranged, and operating substantially as hereinbefore
described.
3. The mode of holding wine glasses, tumblers, jugs, and similar articles in a
pantograph engraving machine, in which they are placed between a series of metal
plates adjustably fixed to one or more bars, the said bars being fixed to end disks or
pulleys fast on journals or short end shafts, and the articles being thereby held con-
centrically with the axis of the end shafts, the parts being constructed, arranged,
and operating substantially as hereinbefore described.
Dated this Twenty-eighth day of January 1890.
EDMUND HUNT,
Applicant's Agent..