Improvements in Glass-blowing Machines.
Year: 1897

page_text: Date of Application, 15th June, 1897.-Accepted, 31st July, 1897.
COMPLETE SPECIFICATION.
Improvements in Glass-blowing Machines.
I, HENRY JOSEPH COLBURN, of No. 531 Laskey Avenue, in the City of Toledo,
County of Lucas, and State of Ohio, United States of America, Mechanical Engineer,
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:
This invention relates to gas-blowing machines and has for its object the
improvement in means for supporting the operative parts of the machine, whereby
they are made easily adjustable vertically; improvement in means for supplying air
under varying pressure to the blow-irons of said machines; improved supporting
devices for said blow-irons; improved means for rotating said blow-irons at different
speeds; improved construction of the sectional molds, and improved means for
adjusting some of the parts supported on the main shaft, all as hereinafter fully
described and pointed out in the claims.
In the drawings forming part of this specification,―
Figure 1 is a front elevation, partly in section, of a glass-blowing machine
constructed according to my invention.
Figure 2 is a side elevation of one of three uprights composing part of the frame
of the machine, which is located back of the main-shaft in Figure 1.
Figure 3 is an enlarged plan view of the top and base of the machine, with
interinediate parts omitted.
Figure 4 is a side elevation of certain gear connections shown in Figure 3.
Figure 5 is an enlarged vertical section of the upper part of the main-shaft, and
the parts secured thereto.
Figure 5 is a perspective view of means of engagement between the main-shaft of
the machine and a sleeve on said shaft.
Figure 6 is a vertical section of part of the base of the machine and showing partly
in section a closed mold thereon.
Figure 7 is a plan view of the mold shown in Figure 6.
Figure 8 is a sectional plan view, said sections being on the several planes
indicated by the lines 8, 81, and 82, on Figure 5, the various parts being shown
broken away.
Figure 9 is a plan view of an arm of one of the spiders on the main-shaft, which
supports the blow-iron in vertical position.
Figure 10 is an elevation of the end of the arm shown in Figure 9.
Figure 11 is a full-sized section of the end of one of the blow-irons and the socket
for receiving the same.
Figure 12 is a section on line 12-12, Figure 11.
Figure 12 is a sectional view of one end of a valve operated by the blow-irons of
the machine.
Referring to the drawings, A is the base of the machine to which are bolted the
three uprights A1, A2, A3, shown in Figure 1, which is a front elevation of the
machine, wherein said uprights are shown one each on the right and left-hand sides
of the machine, and one on the back of the main-shaft C,

page_text: This disposition is made of these uprights in order to leave the front half of the
machine entirely unobstructed. Said uprights are united at the upper extremities
thereof by a three-armed. top-frame B, a plan view of which is shown only in
Figure 3. Suitable truck-wheels a, a, are provided and mounted on the ends of
studs horizontally secured on the base A; and a swiveled truck-wheel a³, is secured
to the base A, at the back of the inachine, and provided with a handle, only a portion
of which is shown in Figures 2 and 3, whereby said machine may be moved.
As shown in said Figure 3, that part of said top-frame B, which unites the
uprights A2 and A³, passes practically over the centre of the circular base A, and a
bearing 3, is provided therein which is central with said base. Said bearing receives
the hub of a large beveled gear E, a shoulder being provided on the underside of said
gear E, for bearing against the upper surface of said bearing 3.
Said beveled gear E, is rotated by the engagement therewith of the beveled
pinion W, secured to the shaft W, having a worm-gear 21, on the end thereof
overhanging the top of the frame B, (see Figures 1 and 3), said worm-gear meshing
with a worm 22, on a shaft 23, located at right angles to said shaft W2, and
supported for rotation in suitable bearings 24, bolted to the upright frame-piece A³,
near the upper extremity thereof. A suitable driving pulley 25, is fixed on one end
of said shaft 23, with which a belt engages for rotating the same. Centrally through
the beveled gear E, is located the main vertical shaft C, whose upper extremity is
flanged, as at 4.
A metal collar 5, is shrunk onto the upper end of said main-shaft C, the top of said
collar being flush with the top of said shaft.
The purpose of this collar is to afford a broad bearing for the support of said
main-shaft C, on the upper end of a long-screw-threaded sleeve D, fitted to the upper
end of said shaft. The said sleeve D, passes through the hub of the beveled gear E,
and has a free vertical movement therein but is made to rotate with said gear as
follows:
A key-way is provided on the inner surface of the hole in the hub of the beveled
gear E, and the outer surface of the threaded sleeve D; and a key fitting tightly in
the groove in the gear E, and loosely in the groove in the sleeve D, permits the
vertical movement of the latter through said hub, but the two parts C and D,
rotate as one.
A positive engagement between the collar 5, on the end of the main shaft C, and
the upper end of the screw-threaded sleeve D, whereby said main-shaft C, is made to
rotate with said sleeve D, is effected as follows: A slot 5ª, rectangular in cross-section,
is cut diametrically across the top of the sleeve D, and on the bottom of the collar 5,
rectangular projections 5", fitting into said slots 5ª, thereby positively locking the same
parts together for the purpose described. Figure 5ª, of the drawings, illustrates this
construction. Said threaded sleeve D, has a screw engagement with a suitably
threaded hand-wheel F, the hub of which has a bearing on the upper surface of the
gear E, and below said bearings in the top-frame B, is a locking wheel or check-nut G,
which screws up to a bearing against the lower end of the hub of the beveled-gear E.
From the above description it will be seen that the sleeve D, may be securely
locked by the wheels F and G, to the hub of the beveled-gear E, in any desired
vertical position relative to said gear, and the rotation of the latter rotates the
main-shaft C, and the parts secured thereto.
A main-head M, is keyed to the shaft C, at 7, and a screw-threaded sleeve O, is
keyed to the said shaft below said main-head in proximity thereto. A screw-threaded
sleeve 0, having a hand-wheel thereon, preferably integral therewith, fits over said
sleeve O; and the upper end of said sleeve O', bears against the lower end of the
hub 8, on said main-head. The sleeve 0¹, is the main support of said main-head M.
A set screw 9, bears against the key 7, whereby said head M, is caused to rotate
with said shaft.
The point of said set screw enters said key more or less to prevent it from falling
in key-groove when the said screw is loosened. Said sleeve 01, is for the purpose
of vertically adjusting said head M, and supporting it, as above set forth,

page_text: The drawings illustrate a machine designed for four molds, and the main-head M,
thus has four radial arms 10, (though a greater or less number may be used,) to
the outer extremities of which the brackets N, are secured, which brackets support
the vertically moving blow-iron spindles 12, whose lower ends positively engage
with the upper ends of the blow-irons T, for rotating said blow-irons and for supplying
air to the molds therethrough.
Said main-head M, has a short lub 13, projecting above the upper surface thereof,
and between the end of this hub and the lower end of the sleeve D, is located on the
main-shaft C, a sprocket-wheel K, turning freely thereon. A sprocket-chain 14, on
said sprocket-wheel engages a driving sprocket-wheel, to be described further on,
whereby said sprocket K, is rotated independently of said main-shaft C, and a gear 15,
secured on the lower extremity of the long hub of sprocket K, meshes with four
gears 16, supported for rotation on suitable studs 17, fixed in said head M.
Said gears 16, are located centrally in line with the center line of the arms 10, of
the main-head M, and have secured to their hubs, between said gears and the surface
of said main-head, the sprocket-wheels 18, engaging with which and with another
sprocket-wheel 19 on the blow-iron spindle 12, is a suitable sprocket-chain 20,
whereby rotary movement is imparted to said spindle and to the blow-iron engaging
with the lower end thereof.
The means for rotating said sprocket-wheel K, as above described, are provided as
follows:
The bevel-gear E, is provided with gear-teeth on its periphery, as well as with
beveled teeth on the under side thereof, and said first-named teeth engage with the
teeth of a gear 26, supported on a stud 27, for rotation thereon, which stud is fixed
in the top-frame B.
Said frame B, has a bearing 28, in its extreme rearwardly projecting arm for a
vertical shaft 29 (see Figures 2, 3, and 4), whose lower end is stepped in a bearing 30,
bolted to the upright A (Figure 2).
A small gear 31, is secured to the top of said shaft 29, the center of said gear
and the center of gear 26 are located on the same line, radially, from the center of
the main-shaft C, and between said gears 31 and 26, are two gears 32 and 33 of
different diameters, secured to a sleeve which is rotatably supported on a stud 34,
fixed in the end of a yoke 35-the smaller of said gears 33, meshing with the gear 26,
and the larger gear 32, meshing with the small gear 31, on said shaft 29.
Said yoke is adjustable horizontally on the top-frame B, a slot in said yoke having
passed therethrough a bolt 36, which enters a suitably threaded hole in the
top-frame B, whereby said yoke may be secured in any desired position on said
frame.
To change the speed of the shaft 29, the two gears 32 and 33, are removed and
two gears of different diameters substituted therefore, said bolt 36, being loosened
and the yoke 35, being adjusted to bring the said new gears into mesh with the said
gears 31 and 26.
The length and position of said shaft 29, are such that a sprocket-wheel 37, fixed
thereon, as shown in Figure 2, will lie in the same horizontal plane as the sprocket-
wheel K, on the main-shaft C, and a suitable sprocket-chain 14, is provided for the
engagement of said two sprocket-wheels, whereby the rotary movements of the
shaft. 29, are imparted to said sprocket K, and through the gear and sprocket-chain
connections above described to the blow-iron spindles 12, and blow-irons T, which
engage by one end with said spindles.
From the preceding description it is seen that while the main-shaft C, is rotating
at one speed, the speed of rotation of the blow-irons may be varied to suit the
requirements of the different kinds of work which can be performed by this
machine.
At the extremities of the arms 10, of the main-head M, are secured the brackets N,
which support the blow-iron spindles 12. Said brackets, as shown, are provided with
two arms in which are located the bearings 39, for said spindles 12, and between said
bearings on said spindle, the sprocket-wheels 19, are located.

page_text: Said sprocket-wheels and spindles have a spline and groove engagement, whereby
said spindles may have a vertical movement through the said sprockets and be
rotated thereby.
The upper extremities of the spindles 12, are somewhat enlarged and a groove is
turned therein at right angles to the axis of the spindle, and a collar 40, engaging
said groove, has oppositely located trunnions thereon which engage pivotally with
the forked end 41, of the cam-actuated levers 42. Said levers, on their inner ends,
are provided with cam-rolls 43, and are supported for a swinging movement in a
vertical plane on pins 44, passing therethrough and through a suitable standard 45,
bolted to the surface of the main-head M.
On the lower extremity of said blow-iron spindle 12, there is screwed thereon a
mouth-piece 46, which is provided with a flaring entrance in the lower end thereof,
as shown in Figures 5 and 11, which last-named figure shows the construction of the
lower end of the spindle 12, and the upper end of the blow-iron T, in engagement
therewith, and in engagement with the piston-valve inside of said spindle.
Figure 12 shows, in cross section, the means of engagement between said blow-
iron and the mouth-piece of said spindle, whereby said blow-iron is positively rotated,
which construction consists in providing a cup-shaped piece 47, fitting the interior of
said mouth-piece 46, and having a spline and groove engagement with the interior
thereof and a hexagonal or other angularly shaped opening 48, centrally there-
through in line with the axis of said spindle 12, the ends of the blow-iron being made
to conform in cross section to the contour of said opening 48, and fitting loosely
therein.
Upon the insertion of the blow-iron into the spindle 12, if the angular sides of the
end thereof do not coincide with the angular opening in the eup-shaped piece 47,
the latter will be lifted against the spring 47", which spring will force said cup down
in engagement with said blow-iron as, by the revolution. of the latter, the angular
sides of said opening coincide with the angular end of said blow-iron.
The blow-iron spindle 12, as shown in Figure 5, is provided with a cavity 49,
within it near its lower end, and in the upper end thereof with a hole 50, for receiving
a suitable pipe connection; said two openings being united by an air-passage 51,
extending lengthwise from the lower end of said spindle into the hole 50, in the top
thereof.
This passage provides means for conducting air to the blow-iron and thence to the
molds T, of the machine, and said passage is controlled by a piston-valve located in
the lower end of said spindle 12, which valve is opened by the contact of the upper
end of the blow-iron when inserted into the mouth-piece 46, and is closed by the air
pressure above it when said blow-iron is taken away.
Said valve consists of a tubular piece 52, the upper end of which is closed and
which fits the bore of the air-passage 51, in the lower end of said spindle, with
sufficient freedom to slide freely therein.
The length of said valve is such that when the blow-iron T, is removed and the air-
pressure has forced said valve downward, so that its lower end rests on the inner
surface of the cup 47, the air-ports 53, in the walls of said piston-valve 52, near its
closed end, will be entirely covered by the inner surface of the passage-way 51,
in the spindle 12, thus preventing the passing of the air therethrough.
The dotted position of said valve, when closed, is shown in Figure 11.
Within the lower end of said valve is a washer 54, made of rubber, leather, or other
suitable material, against which the end of the blow-iron comes in contact when it is
put into the mouth-piece of the spindle.
This serves not only to prevent the escape of air around the end of the blow-iron,
but also prevents the battering up of the end of the valve by the end of the blow
irons which in operating this machine have to be removed and replaced very quickly.
Instead of the washer 54, the end of said tubular valve 52, may be provided with
an annularrubber shoe, as shown in section in Figure 12ª.
The blow-iron spindle 12, is connected by suitable metal pipe fittings and a
flexible-pipe 55, with a valve-controlled air-passage 56, horizontally located in the top

page_text: of the standard 45. A piston-valve 57, has a movement in said passage for opening
and closing an air-port therein.
Said valve has a screw-threaded stem 58, on the outer extremity of which is a
head 59, provided with an annular groove engaging with the forked end of a bow-
spring 60, secured to the upper end of said standard 45.
Said valve 57, is moved to close the air-port above referred to by the engagement
of the said head 59, on the end of the valve-stem 58, with a horizontally located
stationary cam-surface 61, against the edge of which the said head 59, is constantly
held in engagement as said parts are carried around in a circular path by the rotation
of the main-head M.
By varying the peripheral contour of said cam-surface 61, any desired action of the
valves 57, may be obtained. Said cam-surface is held stationary by being secured in
any suitable manner to the top of the annular blow-iron cam 1, cast integral with a
long hub 62, which extends from the underside of the sprocket-wheel K, to the top
of said gear 15, on the main-shaft; the hub of said sprocket-wheel turning freely
within said hub 62.
An arin L, shown partially in Figure 2, and more fully in Figure 8, is bolted to
the top of said blow-iron cam I, and extends backward nearly to the inner face of
the frame-upright A¹, which is provided with a vertical rib 63, with which the fork-
end of the said arm L¹, engages and whereby the blow-iron cam L, is prevented from
rotating by contact with the rotating hub of the sprocket-wheel K.
Said blow-iron cam L, is made with a downwardly projecting cam-surface 64,
(shown in Figures 1 and 5,) with which the cam-rolls 43 on the ends of levers 42
engage, and whereby said levers are operated to move said spindles 12 vertically in
their bearings when, during the operation of the machine, the blow-irons arrive at
that point in their rotation about the main-shaft where they must be removed from
the machine and a new blow-iron with a fresh gathering of glass substituted
therefor.
Air is supplied to the various blow-irons of the machine as follows:
An air-passage 65, is made in the main-shaft C, from the top thereof downward
and terminating at a point somewhat below the surface of the main-head M.
A cross-passage 66, is made through the walls of the shaft C, at such a point as
will bring said cross-passage within the air-reservoir M', within said main-head.
Said air-reservoir is practically circular in form and concentric with the main-
shaft C.
Air-conduits M², are provided extending from said reservoir M', to the surface of
the main-head M. Said air-conduits being in the form of hollow ribs are preferably
cast integral with the walls of said reservoir and the horizontal surface of said main-
head whereby they not only serve their purpose of air-conduits but also form
strengthening ribs for the stiffening of the horizontal portion of said main-head on
which the various operative parts of the machine heretofore described are located.
The location of these ribs or air-conduits M², is clearly shown in Figure 8, wherein
it is seen that their extremities lie substantially midway between the arms 10, of
said main-lead. An opening is made down through the surface of the main-head
into each of these air-conduits M', as shown in said Figure 8, and a flexible
connection 67, extending from said opening to a suitable nipple on the side of the
valved air-passage 56, in the top of the standard 45, serves to convey air from the
said main reservoir to said valved air-passage.
To the upper end of the shaft C, a connection is provided with any convenient
source of air supply, a short end 68, of said flexible connection being shown in
Figure 5.
Two spiders S and S¹, are secured to the main-shaft C, (see Figure 1), and each of
these spiders is provided with as many arms 69, as there are sets of molds.
In the machine forming the subject of this invention only four molds are
employed.
The centre of the socke's in the ends of the arms 69 of said spiders, and the blow-

page_text: iron spindles in the ends of the arms 10 in the main-lead, and the centre of the
molds T', supported on the base of the machine, are all in vertical alignment.
In order to provide for the easy and rapid adjustment of the blow-irons in absolute
alignment with the blow-iron spindle 12, and the mold T, the sockets 70, in the
ends of the arm 69, for receiving said blow-iron, are made laterally adjustable, as
shown in the detailed view in Figures 9 and 10, said socket having exteriorly a
rectangular form and being inserted in a flanged rectangular opening in the ends of
said arın 69, with adjusting screws 71, passing through said flange and engaging the
edges of said socket.
Furthermore, owing to the rapidity with which said blow-iron is taken from and
replaced in the machine, it has been found convenient to cast on the ends of the
arms 69, guides 72, for said blow-iron, which flare outwardly thereby rendering it
unnecessary for the workman to be especially careful in replacing a blow-iron in the
machine. Said guides on the upper blow-irons S, hang downward; and on the lower
blow-iron stand vertically. The usual enlargement 73 on the blow-iron is provided
for supporting said blow-iron on one of said spiders. In the drawings, said
enlargement is shown as engaging the arms of the spider S¹.
In manufacturing articles of glass on machines of this description, the use of
sectional paste-molds is almost invariably required, and to provide for the dipping of
said molds in water, for the purpose of wetting the paste-lining and cooling the parts
of said mold, a water-trough 74, is provided in the front part of the base A; (see
Figure 3). Said trough is made integral with said base.
Figures 6 and 7, show the construction of one of said paste-molds indicated by T¹,
and its adaptation to the machine.
Referring to Figures 3 and 6, a base A, is shown having a horizontal platform 75,
occupying, as shown in Figure 3, about two-thirds of the area of said base. The
other third being represented by the water-trough 74. A raised combing 76,
surrounds this platform and forms the front of the water-trough. A track 77, at a
suitable distance from the centre of the base and concentric therewith, where it lies
on the horizontal portion of the platform, is provided for a supporting wheel, 78, to
run on, which wheel is pivotally supported in proper relation to said track on
the under side of a mold-carrier 79. Said mold-carrier is hinged to a hub 80, with
short arms 81, cast thereon for the reception between them of the end thereof. A
suitable pin passes through said arms and the end of said mold-carrier whereby the
latter may have a swinging motion in a vertical plane which permits said mold-
carrier and mold to follow the downwardly curved track 77, into the water-
trough 74.
The hub 80, is fixed upon the main-shaft C, in any convenient manner
and rotates therewith.
The movement of said mold-carriers on the track around the circular base A, causes
the rotation of the wheel 78 on its axis. Said wheel has secured to its face a beveled
gear 82, engaging with another beveled gear 83, supported in the inold-carrier 79.
A stud passes through said mold-carriers to which stud said beveled gear 83 is fixed,
which stud is central with the mold T¹, a disk being fixed to the inner end of said
stud thus forming a bottom for said mold, which, being constantly rotated by the
movement of the mold supporting wheel 78, geared thereto as described, serves to
give a smooth finish to the bottom surface of any article of glass made in said
mold.
Said mold is automatically opened and closed at the proper time to permit it to
descend into the water-trough in an opened position, and said opening is effected by
the spring 92, secured by one end to the pin 93, and by its opposite end to the
stud 85, in the block 86, which spring draws the said block towards the main-shaft,
as the mold begins its descent into the water-trough, the edge of the cam 84 being of
such contour as to permit said movement of said block.
When said mold is closed, the tension of said spring 92 serves to keep said roll 85
in contact with the edge of the cam 84.
The closing of said mold is effected by the cam 84, against which the cam-roll 85
bears, which cam-roll is supported in the block 86, which slides between the two

page_text: arms 87 and 88 of said inold-carrier, two connecting rods or arms 89, being attached
to each side of said block and to one side of said paste-mould, each side of the center
thereof.
The two halves of the said mold T", are pivoted at 90, to the mold-carrier, and it is
readily seen, by reference to Figure 7, that any movement of the block 86, outwardly
from the main-shaft between the arins 87 and 88 of the mold-carrier, will close said
mold T, and said movement is provided for at the proper time by the contour of said
cam 84.
The final closing of said mold-section is made positive by a cam 84", secured to the
platform 75, of the base A, with which cam the cam-roll 85, engages.
To positively insure the opening of said mold, the cam 84, is provided as an aid to
said springs 92, which cam is secured to the platform 75, of the base A, in position to
engage said cam-roll 85, and impart a quick movement of the block 86, inward
toward the main-shaft. C.
Heretofore, in molds constructed in a manner similar to this, said molds have been
badly strained or broken by reason of more or less molten glass being sometimes
caught between the sides thereof, as the mold is closing over the gathering of glass
on the end of the blow-iron, and without any means provided for yielding to said
pressure by any of the parts, inore or less damage will frequently oocur.
To obviate this objection, one or both of the arms 89, is made as shown in
Figures 6 and 7, viz.,a loop 91, is formed in said arın substantially circular in form,
and by referring to Figure 6, it will be seen that the ends of said loops are somewhat
separated. This loop 91, in the arm 89, is made in such a way as to have strength
enough to perform its functions in opening and closing the mold, but if any glass
becomes caught between those parts of the mold which should close tightly, the said
loop in the arm 89, permits the two horizontal portions of said arm to approach each
other more or less, thus relieving the excessive pressure on the mold, and preventing
any damage thereto.
Said arm is made of steel and properly tempered.
As said mold descends into the water-trough 74, it does so against tension of the
spring 92, located between the pin 90 of said mold, and the pin 93 forming part
of a colla 94, which is secured above the hub 80 to the main-shaft C, by a set-screw.
Said spring 92, is for the purpose of assisting the return of the mold carrier to a
horizontal position as it emerges from the water-trough 74.
The adjustment of the main-shaft C, and all of the parts secured thereto is effected
by first loosening the locking-wheel G, and then by manipulating the hand-wheel F,
the said main-shaft C, may be raised or lowered at will and secured in said newly
determined position by turning up the wheel G, as described.
Adjustments of the main-head M, on said shaft C, are effected without changing
the position of said shaft, by first loosening the set-screw 9, which holds the key 7,
and then manipulating the screw-threaded sleeve O', to raise or lower said head, as
desired, securing the latter by again setting up the screw 9.
This adjustment, for example, is necessary to effect the removal of cum 61, it being
necessary to change this cam for different kinds of work.
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. In an automatic glass-blowing machine, a suitable base, and upright frame
thereon, a vertically-adjustable main-shaft suspended from a part of said frame over
said base, and means for rotating said shaft, a series of molds, blow-irons for said
molds supported in operative relation thereto, a main-head vertically adjustable on
said shaft, said bead, with said molds and blow-irons rotating with said shaft, means
on said main-head for positively engaging the upper extremities of said blow-irons,
means for effecting a change in the speed of rotation of said blow-irons relative
to the speed of rotation of the main shaft, means for supplying air at varying
pressures to said blow-irons, and means for automatically opening and closing said
molds, substantially as described.

page_text: 2. In an automatic glass-blowing machine, a base and an upright frame thereon, a
vertically adjustable main-shaft suspended from a part of said frame over said base,
and means for rotating said shaft, a main-head secured to said shaft and adjustable
vertically thereon, a series of molds secured to said shaft, and blow-irons for said
molds, one end of said blow-irons engaging the end of vertically moving hollow
spindles rotatably supported on said main-head, levers pivotally supported on said
main-head for moving said spindles, a suitable air-supply for said blow-irons, valves
on said main-head for controlling said air-supply and means for operating said valves
and for moving said pivotally supported levers consisting of non-rotating cam surfaces
supported on said main-head and engaging said valves and levers and movable
vertically with said head, substantially as described.
3. In an automatic glass-blowing machine, a base and upright frame thereon, a
main-shaft suspended from said frame over said base, and means for rotating said
shaft, a main-head secured on said shaft and adjustable vertically thereon, a series of
sectional molds, blow-irons for said molds, hollow spindles on said head for positively
engaging one end of said blow-irons, and means of support on said shaft for said
blow-irons, air-conduits between said hollow spindles and an air-reservoir in said
head, valves in said air-conduits and pivotally supported levers engaging said hollow
spindles, which valves and levers are operated by their engagement with stationary
cam surfaces on said head, around which they are moved by the rotation of said head,
combined with means for supplying air to said reservoir, substantially as described.
4. In an automatic glass-blowing machine, a base and upright frame thereon, a
main-shaft suspended from said frame over said base, and ineans for rotating said
shaft, a main-head secured on said shaft and adjustable vertically thereon, a series of
sectional molds, blow-irons for said molds, hollow spindles on said head for positively
engaging one end of said blow-irons, and means of support on said shaft for said
blow-irons, air-conduits between said hollow spindles, and an air-reservoir in said
head, valves in said air-conduits and pivotally supported levers engaging said hollow
spindles by one extremity and by their opposite extremities with stationary cam-
surfaces on said head, around which said levers are moved by the rotation of said
head, combined with means for supplying air to said reservoir, and means for rotating
said blow-irons at different rates of speed independent of the speed of rotation of said
main-shaft, substantially as described.
5. In an automatic glass-blowing machine, a suitably supported main-shaft and
means for rotating said shaft, a main-head secured thereon, a series of molds secured
to said shaft, blow-irons between said molds and said main-head, air-conduits for
conveying air to said blow-irons under varying pressures, means for opening and
closing said molds, and means for supporting and for rotating said blow-irons at varying
rates of speed independent of said main-shaft, consisting of a spindle for engaging
one end of said blow-irons, a member on said main-shaft rotating freely thereon, gear
and band connections between said member and said spindle for rotating the latter,
an auxiliary shaft on the frame of the machine parallel with said cam-shaft, a band
connection between said auxiliary shaft and said member on the main-shaft, and
interchangeable gear connections between the main-shaft and auxiliary shaft whereby
the latter may be rotated at varying rates of speed relative to the speed of said main-
shaft, substantially as described.
6. In an automatic glass-blowing machine, a suitably supported main-shaft vertically
adjustable in its bearings and means for rotating said shaft, a main-head vertically
adjustable on said main-shaft and rotating therewith, suitable molds carried around
by said main-shaft in a circular path, suitably supported blow-irons, hollow spindles
on said main-head engaging with one end of said blow-irons, driving connections on
said head for said spindles, a blow-iron driving member on said main-shaft rotatable
independently thereof, and means for rotating said member at varying speeds, an air-
reservoir in said main-head, air-conduits therefrom to said hollow spindles, valves in
said conduits for varying the supply of air passing to said spindles, means for moving
said spindles vertically, and suitable air-passages in said main shaft communicating
with said air-reservoir for supplying air thereto, substantially as described,

page_text: 7. In a glass-blowing machine, a sectional mold therefor, and means for operating
the same consisting of a mold-carrier, mold-sections pivotally secured thereon, a block
having a longitudinal movement on said carrier and one or more longitudinally
yielding connecting arms engaging with said block and the sections of said inold, and
ineans for moving said block whereby said sections are swung from and toward each
other, substantially as set forth.
8. In a glass-blowing machine, means for rotating the blow-irons thereof consisting
of a rotatable hollow-spindle 12, a mouth-piece 46, thereon having an opening in its
lower end for the end of a blow-iron, a vertically movable cup 47, in said mouth-piece,
a spring 47, between the top of said cup and the lower end of said hollow spindle, an
angularly shaped opening in said cup for receiving a similarly shaped end of a blow-
iron, an air-valve in said spindle operated by said blow-iron to admit air to the latter,
and means for rotating said hollow spindle, substantially as described.
9. In an automatic glass-blowing machine, means for effecting the alignment of a
blow-iron with its mold consisting of a blow-iron support 69, movable sockets in the
ends of said arms for engaging said blow-iron, and means for adjusting said sockets in
a plane at right angles to the axis of said blow-iron, substantially as described.
10. In a glass-blowing machine, a mnain-shaft and means for rotating said shaft, a
series of blow-irons and means on said shaft for supporting the same, combined with
means for rotating said blow-irons, and for effecting a change in the speed of rotation
thereof relative to the speed of rotation of said main-shaft, substantially as described.
JALL
1
HENRY JOSEPH COLBURN,
Haseltine, Lake & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.