Improvements in and relating to the Manufacture of Hollow Glass Ware, and Apparatus therefor.
Year: 1898

page_text: Date of Application, 13th Dec., 1898-Accepted, 8th Apr., 1899
Improvements in and relating to the Manufacture of Hollow Glass
Ware, and Apparatus therefor.
I, PETER JENSEN, of 77, Chancery Lane, in the County of Middlesex, Chartered
Patent Agent, do hereby declare the nature of this invention (a. communication
to ine froin abroad by Christian Zechariah Frederick Rott, Manufacturer, and
Theodore Charles Steimer, Machinist, residing respectively at 4728, Wallingford
Street, Pittsburgh, in the County of Allegheny and State of Pennsylvania, and
at Charleroi, in the County of Washington and State of Pennsylvania, both in the
United States of America), 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 the blowing of hollow glass articles, including both
improvements in the art of blowing the same in paste molds, and machines for
blowing glass in such paste inolds, the machine being peculiarly adapted for this
purpose, though it may be employed for blowing in the ordinary heated iron molds.
One object of the invention is to provide for the blowing of finless hollow glass
articles, circular in cross section, without the necessity of dipping or spraying the
paste molds in order to cool the same, so cheapening the manufacture and improving
the class of articles produced. Another object is to provide a blowing machine
suitable for blowing, such articles which is extremely simple in construction, while
all the necessary parts for the running of the same can be supported upon a single
frame, the machine being thus self contained, so that it can be moved from place
to place in the factory.
The paste molds above referred to are employed only for the blowing of glassware
which is truly circular in cross section, these being generally termned cylindrical glass
articles, though they often differ from true cylinders in the fact that they are of
irregular shape in longitudinal section, as found in lamp chimneys of different shapes
having contracted necks, bulbs, or other enlargements, or having tapering bodies.
These articles are blown in what are termed "paste'molds so as to form them,
"finless," that is, free entirely from the fins formed at the joints of the glass mold, i.e.,
where the two sections of the mold come together. To accomplish this the interior
face of the mold is coated with a suitable paste, which supports a coating of
carbonaceous material, such as pulverulent charcoal, and the blank is blown against
this coating, and revolved during the process of blowing, so that no portion of the
glass body rests against the mold joint a sufficient length of time to form such fins.
The revolving of the blanks during blowing has either been accomplished by &
regular mechanical rotation of the blow pipe or by revolving the blow pipe by hand
back and forth, or as it might be termed, an oscillation thereof, the same movement
being imparted to the blank within the mold. This art of glass making bas required
different conditions entirely from the ordinary class of glass blowing or pressing in
nolds where the glass comes directly into contact with the iron surface, as exemplified
in the blowing or pressing of ornamented articles, bottles, etc.
The universal practical use of such paste molds has been to dip them into water, or
spray water onto the paste surface after each blowing operation to cool the molds.
The continual dipping or spraying of the mold gradually washes off the charcoal

page_text: surfacing of the paste lining, leaving the sticky paste exposed to the hot glass, which
destroys the paste, making it necessary to recoat the mold. Practice has shown it to
be necessary to renew this paste lining after each turn, the paste being burned off and
new paste applied before the next use of the inold. The labor of dipping the mold or
wetting its paste surface has required the employment of an extra workman, or the
use of complicated mechanisms.
It has been discovered that these articles can be formed within the molds when dry
by maintaining the mold by outside cooling below a heat which would char the paste
surface, and that in so doing much of the labor and complication of paste mold blowing
is overcome, and the life of the paste surface extended, so that the objections to this
art of glass blowing are practically removed. This part of the invention therefore
consists in making finless hollow glass articles circular in cross section, by blowing
and revolving a hot blank against a dry paste surface within the mold, and maintaining
such paste surface below a charring heat by outside cooling.
The glass blowing machine is especially adapted for the manufacture of these
hollow glass articles in the way above indicated and with blow molds suitable for
practising the same.
It consists, generally stated, in a frame having blow molds thereon, for example,
two molds which are hinged together and opened by springs, while they are
closed and held closed during the blowing operation by suitable cams mounted
on a horizontal cam shaft between the molds; a motor supported on the machine
and geared to this shaft by worm wheel gearing, a blower supported on the
machine and operated by the motor for furnishing air, both for the blowing of the
articles and for cooling purposes around the machine; means for supporting the blow
pipe without enlarging it; rotary friction wheels supporting the pipe in position, and
rotating the same; peculiar connections between the air supply pipe, and the blow
pipe, in which the connecting air supply socket is coupled with the blow pipe and
withdrawn therefrom, and moved out of line therewith, so that a continuous stream of
air will not be forced through said air supply pipe; adjustable means by which
the molds can be raised and lowered according to the length of the article to be
formed therein, so that the same length of blow pipe can always be employed. The
particular points of invention desired to be covered, will be specifically set forth and
claimed.
To enable others skilled in the art to make and use this invention, the same
will now be described more fully, referring to the accompanying drawing, in
which_
Figure 1 is a face view of the machine; Figure 2 is a back view thereof; Figure 3
is a side view; Figure 4 is a cross section on the line 4-4 Figure 1; Figure 5 is a
cross section on the line 5-5 Figure 1; Figure 6 is a perspective view of the
mechanism for operating the blow-pipe socket; Figure 7 is a detail for the
straightening of the molds supporting the adjusting and operating mechanism;
Figure 8 is a top view of mechanism for operating blow-pipe socket; and Figure 9 is
a detail of mechanism for turning blow-pipe; Figure 10 is a longitudinal section, and
Figure 11 a cross section of a paste mold suitable for practising the invention
above outlined of applying outside cooling to the mold to maintain its paste
surface below a charring heat; and Figure 12 is a longitudinal section illustrating
another means of accomplishing this result.
As the glass blowing machine illustrated in the drawings is especially adapted for
the practice of the above stated method of blowing finless cylindrical hollow glass-
ware, I will describe such machine including the mold itself, so as to make clear the
way the invention may be practised in machine blowing, though it is to be understood
that such method may be employed for blowing either by machinery or by hand.
The machine is mounted on the truck A, by which it can be moved from place to
place in the factory, and from which bed or truck extend up the standards a a, which
give support to the main part of the operative mechanism. On this bed or truck is
secured the motor B, the motor shaft b of which passes forward about in line with
the standard a and carries the worm b¹, which meshes with the worm wheel 62, driving

page_text: the pinion bs, which meshes with the gear wheel c¹, on the end of the cross or cam
shaft C, which extends across the machine and carries the cams d d and d¹ d', which
operate the molds D and D¹ respectively.
These molds are formed with hollow walls and have suitable connections by which
water may be carried through the same. The molds illustrated in Figures 10, 11
and 12 have mold cavities of the ordinary shapes for blowing lamp chimneys, and are
formed in two sections, 3 4, hinged together. Each section of the mold is formed as
it were, as part of a cooling box, so that when the two sections are closed together
the mold proper is enclosed within a cooling chamber. For this purpose the molds
have in addition to their ordinary walls 4 the outer walls 5 forming the water
chainbers 6. These chambers have suitable pipe connections by which any suitable
cooling medium, such as water, cold air, or the like, can be carried through the same.
For example, they have the inlet pipes which extend preferably to the bottom of the
mold, and the outlet pipes 8 leading from the top thereof, these two pipes having
suitable hose connections by which the currents of water or air can be maintained
within the cooling chambers 6. The molds shown in Figs. 10 and 11 are hinged
together at 9 and have suitable handles 10 for operating the same. The only move-
ment necessary for them is the horizontal opening and closing movement in order to
insert the blow blank in and withdraw the blown article from the same while it is
supported on the blow pipe. The interior walls of the blow mold are truly circular
in cross section, as shown in Figure 11, and there are necessarily the points of
joining, as at 11, in which fins would be formed in the ordinary way of blowing in
iron molds. The inner surfaces of the mold are, however, covered with a suitable
paste, as above described, and for this purpose any kind of paste, so-called, and used
in the art may be employed. A paste well suited for the purpose is formed of boiled
linseed oil and rosin in suitable proportions with which the blowing surface of the
mold is coated, and over which pulverized charcoal is dusted to form a surface against
which the blowing takes place. As these molds are mounted in the glass blowing
machine, as illustrated in Figures 1 and 2, water is supplied to the hollow chambers
6 from a main supply pipe e supported on the cross bar el, to which suitable hose
connections can be made from any point in the factory, and from which flexible hose
connections are carried to the inlet pipes 7 leading into the water chamber of each
mold section, the water after passing through the same being led out through pipes
es and flexible connections et to a point of escape, the flow of the water through the
molds being controlled by valves e and eo.
The mold cavities can be of any suitable shape, according to the article formed,
those illustrated in the machine being for the formation of straight bodied lamp
chimneys, as this is an extremely simple form. The two mold sections are simply
hinged together as is ordinarily the custom in blow molds, while, in order to open the
mould springs d² are employed, which are connected to suitable stationary parts of
the machine, as shown, and are of sufficient strength to draw the mold section open,
as such movement is permitted by the cams operating the mold. These cams d d
and are arranged as shown, to close the molds and to hold them closed for a
sufficient length of time to provide for the blowing of the articles, and then to permit
the gradual opening of the same by the springs ². The two sets of cams are set at
right angles to each other, so that one mold will be open while the other is closed,
this being found to be a convenient system in the working of a machine having two
nolds thereon, though, where a larger number of molds are employed they can be
arranged to open and close at any fixed periods, according to the best workings
of the machine.
As it is desirable in the running of such machines to always employ the same length
of blow-pipe, no matter what article is being formed; I provide means for adjusting
the blow molds vertically, according to the height of the body thereof, this being
more clearly shown in Figure 7. Secured to the bed A is the bracket f, which is
bolted thereto by bolts f passing through slotted ways, so that the bracket f may be
adjusted forward and back to bring the mold into the exact position desired, the

page_text: bracket having the lug f2, with which the adjustable screw f³ engages, said screw
passing through the pivot f* upon the bed A.
The upright portion of the bracket f has a vertical slot formed therein, as indicated
in dotted lines and in front of the bracket is the platform g, provided with the upright
portion g¹, having a tongue and groove connection with the bracket f, as shown in
Figure 5, and provided with a lug g² which extends through the vertical slot of the
bracket f, said lug having a threaded hole extending vertically through the same with
which the adjusting screw f5 engages, said adjusting screw being mounted in a seat
in the face of the bracket f, and in the lug fe at the top thereof, and being provided
with an ordinary crank for turning the same.
The blow mold sections rest upon the platform g and the pivot pin g³ passes
through a lug g at the top of the standard g¹ on the platform, and enters into the
seat in the platform itself, while it passes through the hinges of the mold
sections, so serving both to hinge together the mold sections and mount them upon
the platform. The platforms carrying the inolds can be adjusted vertically
through this lug g2 by turning the adjusting screw, while the bracket f can itself
be adjusted back and forth if found necessary, by loosening the boits f¹, and turning
the adjusting screw f³, the bracket being then firmly locked in place.
When blowing articles it is necessary that the blow-pipes should be supported in
proper relation to the molds, and for this purpose guides near each end of the blow-
pipes are necessary. The lower guides can be made very simple in construction, being
nothing more than flaring portions of forks i extending out from the cross-bar ei
secured to the standards a, which cross-bar also supports the water supply pipe e, the
lower portion of the cylindrical blow-pipes h entering these forked guides. It is
necessary to support the blow-pipes vertically, and it is also desirable for the handling
of the same that they shall have no lugs or rings of greater thickness than the bodies
thereof, as such lugs interfere with the manual setting of the pipe in preparing the
blank for inserting in the machine. It is also necessary to lock and hold the blow
pipes in direct axial line with the mold while rotating the same. To accomplish these,
ends I employ the following construction :
On the end of the cross or cam shaft C is placed a sprocket k, from which a sprocket
chain k¹ extends up to the sprocket k² on the cross shaft L, which is mounted in
suitable bearings upon the standard a, as more clearly shown in Fig. 4.
This cross-
shaft operates both the blow-pipe rotating mechanism and the connections between
the air supply pipes and the blow pipes. To rotate each blow-pipe a bevel pinion
on the shaft L is employed, said bevel pinion meshing with the bevel pinion on
the shaft 2, shown in dotted lines within the bearings 13, said shaft carrying the bevel
pinion at its opposite end. The bearing 13 is mounted upon the top plate A¹ of the
machine frame, just in front of the cross-shaft L, the bearings for the cross shaft
being also secured directly to said bed plate. Mounted in the bed plate is a shaft m¹
(shown in dotted lines) carrying on the upper end thereof the combined bevel pinion
and friction wheel m, this wheel, as shown, having a lip m² extending out beyond its
gear face, which lip, as shown in the enlarged detail view Figure 9, fits within the
recess h¹ of the blow-pipe h, and gives support thereto, while said wheel, by its contact
upon the blow-pipe rotates the same at a speed corresponding to the respective surface
speeds of the wheel and pipe. To increase the frictional action, the shaft m¹ also
carries below the top plate A¹, the friction wheel m³, which may have its surface
covered with leather or like material to bind upon the blow pipe. As seen in Figure 4,
a recess a² is formed in the body of the top plate A¹, into which the blow-pipe enters,
so as to contact with the driving wheel m. In order to hold the blow-pipe in proper
position I employ the friction wheels n¹, secured upon a shaft mounted in the top
plate, one above, and the other below the same, in position to hold the blow-pipe
against backward movement. To hold the blow-pipe against both the driving wheel m
and the centering wheel n I employ the spring operated wheel p carried on the arin pl
mounted on the top plate and held in such position that it bears upon the blow-pipe
forward of the center thereof, and so holds it in contact with the driving wheel m and
the centering wheel n. The lever pl carrying this wheel p has the arm p², a spring p³

page_text: being connected to the outer end of this arm and to the top of the shaft carrying the
wheel n so as to draw the wheel p in toward the driving wheel m. The arm p³ is
employed to give a more yielding action to the holding wheel p.
With this construction of supporting and driving mechanism, it is only necessary
to place the blow-pipe into the fork i with its groove in line with driving wheel m.
and force it against the spring wheel p, which will yield sufficiently to let it pass the
same and then spring back and hold it in contact with the driving wheel m,
spring wheel p and centering wheel n in position to be rotated during the blowing
operation.
In order to provide the necessary air under pressure for blowing the articles, [
employ a rotary blower R mounted on the truck A, as shown in Figure 2. This
hlower is driven from the band wheel B¹ on the motor shaft b by means of a bolt r
extending to a band wheel on the blower shaft. From the blower shaft the air
pipe rises as shown at r and extends over above the body of the machine as at ³, it
being also preferred that two branches thereof shall extend downwardly along the
sides of the machine, as at rt, so as to provide for distributing air around the
machine and keep the parts cool. The upper horizontal portion 3 of the blow-pipe
is supported by the arms 15 extending up from the top plate a, and flexible hose
branch pipe S¹ extend downwardly from this upper blow-pipe section ³, at the base
of which are the blow-pipe sockets or couplings s, these sockets or couplings having
seats which fit over and make close connection's with the blow pipes h when the
article is to be blown. The side pipes, as shown, gradually decrease in diameter
while they extend down to about the level of the top of the molds.
At this point
they have valves 5 which control the escape of the air, while valves in the branch
pipes S regulate the air passing to the blowing sockets s. These valves may be
ordinary slide valves of the simplest form, but by the regulation of their openings
the desired pressure for blowing can be accurately adjusted, while the rotary
blower R runs at a regular speed.
No controlling mechanism for either varying or cutting off the air is employed,.
because it is found that but a slight pressure is required, and it may be constant
when operating, while by the raising of this socket the air supply to the blow-pipe is
cut off, and the air escaping from the pipe aids in the cooling of the mechanism and.
those operating the machines.
To give the necessary vertical movement to the connecting socket or coupling S,
we employ the cam 82 mounted on the shaft L and operating on the depending
arm of the lever & carrying the socket 8 and mounted in brackets & secured to the
top plate A¹. The lever 8 may have the socket a secured directly thereto. but we
find it desirable to draw this socket out of line with the blow-pipe when it is raised.
therefrom, and for this purpose I employ the following mechanism :
The socket s has a lug s6 extending backwardly from the same, which lug is itself
pivoted upon the lever s, and secured to one side of this lugs is the arms which
extends outwardly in line with one of the brackets &, and thence backwardly parallel
with said bracket without contact therewith, and spring 8 connecting the free end of
this arm with the lever s¹. This arms is so located that when the socket * is
raised the inner face of the arm will press against the front face of the bracket $5,
which will serve to force the lugs and with it the sockets over to one side out of
line with the blow-pipe. This action takes place when the cam 32 strikes the
depending arms and raises the socket. When, however, the cam frees the arm s³
so that the weight of the socket causes it to drop down upon the blow pipe, the
face of the elbow arm 7 is drawn from contact with the bracket 5, and the
spring will then draw the arms toward it and so swing the socket s into line with
the blow-pipe as it is lowered onto the same. By this construction, whenever an
article is to be blown, the socket passes directly upon the top of the blow-pipe and
makes a tight joint therewith, but as soon as the blowing is completed the cam
raises the socket, and it is pushed over to one side, out of line of the blow-pipe, and
all liability of the current of air blowing down into the blow-pipe, which might
affect the article therein, is prevented.

page_text: The connections for the electric wire are made to the switch boxes, having the
switch, and the resistance box u² through which the speed of the motor is
controlled.
In practising the invention in connection with the above machine, a continuous
current of water is carried through the hollow chambers of the blow molds around the
mold walls thereof in the way above described, so maintaining the paste surfaces of the
mold at a low temperature proper for blowing these hollow cylindrical articles. The glass
is gathered on the blow pipe h, and after it is properly marvered and blown slightly to
bring it to proper condition for blowing within the mold, as one of the molds is
opened in running the machine the blow pipes carrying the blanks are fed alternately
to the two molds and the finished blanks are withdrawn therefrom. To do this the
operator simply guides the blow pipes into the lower guides i holding the groove ¹
in line with the driving roll m, so that its lip m² will enter the groove h¹ and by
slight pressure push out of the way the spring actuated roll p, the blow pipe being
forced.against the centering roll n¹ and being thus enclosed within the cluster of
rolls and driven by friction wheel m and its accompanying fricton roll m³ while held in
proper axial line.
After the blow-pipe carrying the blank has been placed in this
position, by means of the cam d d or d¹ d¹, the mold D or D¹ is closed around the
blank, and at the same time the blowing socket & of the air supply pipe is lowered
onto the blow pipe and makes a sufficiently tight joint therewith to force the air
through the pipe into the blank and expand it within the mold while it is being
rotated by the mechanism above described, and as soon as the blowing is completed
this blowing socket 8 is raised and drawn out of line with the blow-pipe and the mold
is opened, and the blow-pipe carrying the finished blown article can then be withdrawn.
In making the connection of the socket 8 of the air supply pipe with the blow-
pipe, as the cam 82 permits the lowering of this socket down upon the blow-pipe the
spring 88 drawing the arm s draws the socket 8, as it swings on its lug into line
with the blow-pipe, the contacting faces of the arm s7 passing out of contact with
the standard or brackets. When the blowing is completed the cam 2 pressing on
the depending arm of the lever st raises the standard from the blow-pipe, and as it is
raised the contacting faces of the arm s7 strikes the face of the bracket & and forces
the socket out of line with the blow-pipe, so that there is no possibility of further
pressure from the blow-pipe affecting the article blown, the air being simply
discharged in downward course over the machine and assisting in cooling the parts.
In this way without the use of any automatic valves varying the pressure, a proper
blowing pressure to expand the article is obtained, and finished articles of even walls
and fine finish are produced. The blowing operation can be carried on rapidly,
the only necessity being to keep both molds filled, and an ordinary machine
having two molds is capable of producing 2000 or more blown articles during
a turn.
In case it is desirable to employ a mold which is larger or longer than the one
last used, provision is made for raising or lowering the mold platform and adjusting
it to exact position, so that the same length of blow-pipe can always be employed.
A further advantage is found in the fact that the blow-pipe itself has no enlargements
on it, which would interfere with the usual blowing operations in marvering and
otherwise preparing the blank for the blowing machine.
During the blowing of the articles in the molds the blanks are expanded against
the dry surface of the paste coating within the mold and are rotated against the
same by the rotation of the blow-pipe while they are being enlarged within the
mold, and in so doing the formation of any fins on the surface of the blown chimney,
tumbler, or other article, is prevented, while the article is brought to true cylindrical
shape in cross-section. The blowing operation goes on steadily, the blanks being
blown against the dry surface of the paste coating or lining of the mold, and the
mold itself being maintained, by the water or air cooling acting on the outside of the
mold proper, at a temperature below that at which this paste lining or surface will
char; that is, become injured in such way as to prevent the proper blowing of the
article. It has been found that but a slow current of water is required to keep the

page_text: mold at such temperature, while by means of this current the paste lining can be
held at the best temperature for blowing purposes; and that the life of the paste
can be extended many times beyond that of the life of paste within molds where the
molds are dipped or the surface sprayed and so gradually washed off, as above
described. It thus makes possible the employment of a blowing machine of the
character above described where the only necessity in the mold is that it will open
for the withdrawal and insertion of the blank, and close for the blowing thereof, while
the employment of water running over exposed surfaces and the possible danger
arising from the same are done away with.
Where articles are blown by hand against the dry paste surface of the mold
cooled in this way, practically the same advantages are obtained, all the labor and
delay of dipping molds being done away with, and the only movement of the mold
being the ordinary opening and closing thereof, which can be performed by the
blower himself, and therefore the cost of an extra workman at each shop, or the
use of complicated dipping or spraying means, is done away with.
The articles
produced in this way are found to have a fine polished surface, as smooth and perfect
as produced in any paste mold blowing, while it is found that the blowing can pro-
ceed more rapidly and a larger number of articles per turn be produced.
In Figure 12 I have illustrated another form of mold suitable for carrying out
this way of glass blowing, and the same in all essentials as that shown in
Figures 10 and 11, except that instead of employing a cooling chamber through
which a cooling medium is carried, the mold is cooled by jets of air striking against
the outer surfaces of the mold walls, and for this purpose any suitable air pipes are
carried around the mold sections at points about midway of the height thereof, as
at 12, these pipes being perforated so as to project the air against the surfaces of
the mold and so keep it cool.
Having now particularly described and ascertained the nature of iny said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improvement in the art of making finless hollow glass articles circular in
cross section, consisting in blowing and revolving the hot blanks against a dry
paste surface within the mold and maintaining such paste surface below charring
heat by outside cooling, substantially as set forth.
2. The improvement in the art of making finless hollow glass articles circular in
cross section, consisting in blowing and revolving the hot blanks against a dry paste
surface within the mold, and maintaining such paste surface below charring heat
by a current of cooling fluid contacting with the outer surface of the mold body,
substantially as set forth.
3. In a glass blowing machine, the combination with a blow-mold of a blow-pipe
having an annular groove thereon and a supporting means engaging with said
groove substantially as set forth.
4. In a glass blowing machine, the combination with a blow-mold of a blow-pipe
having an annular groove thereon and a rotating and pipe supporting means
engaging with said groove, substantially as set forth.
5. In a glass blowing machine, the combination with a blow-mold, of a blow-pipe
having an annular groove thereon, a roll or wheel having an annular tongue
engaging with said groove, substantially as set forth.
6. In a glass blowing machine, the combination with a blow-mold, of a blow-pipe
having an annular groove therein and a cluster of rolls fitting around the blow-pipe,
one of said rolls having an annular tongue engaging with the groove of the blow-
pipe, and one of said rolls being power driven, substantially as set forth.
7. In a glass blowing machine, the combination with a blow-mold, of a blow-pipe
and a cluster of rolls centering the blow-pipe, one of said rolls being power driven
and another of said rolls being spring actuated, substantially as set forth.
8. In a glass blowing machine, the combination with a blow-mold, of a blow-
pipe, a supporting plate having a recess into which said pipe enters, and a cluster

page_text: of rolls supported on said plate surrounding the blow-pipe and centering the same
one roll being power driven, and one roll spring actuated, substantially as se
forth.
9. In a glass blowing machine, the combination with a blow mold, of a blow
pipe, a supporting plate having a recess into which the blow-pipe enters, and a
cluster of rolls surrounding the blow-pipe above and below said plate, substantially
as set forth.
10. In a glass blowing machine, the combination with a blow-mold, of a blow-
pipe, a plate having a recess through which the blow-pipe enters, a power driven
roll mounted on a shaft extending through said plate and carrying a friction roll
below said plate, a guiding roll mounted on said plate above and below the mold;
and a spring operated roll carried on a lever mounted on said plate, substantially
as set forth.
11. In a glass blowing machine, the combination with a blow-mold, of a blow-
pipe, a power driven roll engaging with the blow-pipe, a guide roll mounted in a
stationary bearing, and a spring operated roll carried on a lever having a long arm
and a spring connected to said long arm, substantially as set forth.
12. In a glass blowing machine, the combination with a blow-mold, of a blow-
pipe, a frame having a top plate, a cross shaft supported on said top plate, and a
cluster of rolls fitting around a blow pipe, and a series of gearing extending from
the cross shaft to and rotating one of said rolls, substantially as set forth.
13. In a glass blowing machine, the combination of a hinged blow-mold, a blow-
pipe supported above the same, springs for opening said molds, and cams operating
upon and closing said molds, substantially as set forth.
14. In a glass blowing machine, the combination of a hinged blow-mold having
hollow walls, a blow-pipe supported above the same, springs for opening said mold
cams operating upon and closing said mold, and water supply pipes and flexible
connections therefrom to carry water to and from each of the sections of said
hollow molds, substantially as set forth.
15. In a glass blowing machine, the combination with a blow-mold, a blow-pipe
supported in line therewith, and a mold platform on which the mold rests, which
is vertically adjustable, substantially as set forth.
16. In a glass blowing machine, the combination of a blow-mold formed of hinged
sections, a blow-pipe supported in line therewith, and a mold platform on which
the mold rests, which is vertically adjustable, and a shaft extending through
the hinges of the mold and connecting it to the mold platform, substantially as
set forth.
17. In a glass blowing machine, the combination of a blow-mold, a blow-pipe
supported in line therewith and a vertically adjustable mold supporting platform
ou which the mold rests, and a horizontally adjustable supporting bracket carrying
the platformu, substantially as set forth.
18. In a glass blowing machine, the combination with a mold; of the bracket f
having a vertical slot therein, a mold supporting platform 9 provided with a lug g²
extending through said slot, and an adjusting screw in the bracket engaging with
said lug, substantially as set forth.
19. In a glass blowing machine, the combination with a mold, of the bracket f
having a vertical slot therein, a mold supporting platform g provided with a lug g²
extending through said slot, and an adjusting screw, in the bracket engaging with
said lug, the platform and bracket having tongue and groove faces engaging with
each other, substantially as set forth.
20. In a glass blowing machine, the combination of a supporting platform
carrying a hinged sectional blow mold, a cross shaft mounted in a frame back of said
blow mold and carrying cams operating to close said molds, a motor mounted on
the frame having a motor shaft provided with a worm, a shaft carrying a worm
wheel, and gearing connections from said shaft with the cam shaft, substantially as
set forth.

page_text: 21. In a glass blowing machine, the combination of a bed plate and truck carrying
a hinged sectional blow mold, standards rising therefrom and supporting a shatt
carrying cams operating to close the mold, a top plate supported on said standards
and carrying a cross shaft, sprocket and chain connections between said shafts, and
a blow-pipe and mechanism carried on said plate for rotating the blow-pipes,
substantially as set forth.
22. In'a giass blowing machine, the combination of a frame, a hinged sectional
blow mold mounted thereon, a motor supported on said frame, a rotary blower and
power connections between the motor and blower, and an air pipe extending from
said rotary blower and connected to a vertically adjustable socket engaging with
the blow-pipe, substantially as set forth.
23. In a glass blowing machine, the combination of a frame, a hinged sectional
blow mold mounted thereon, a motor supported on said frame, a rotary blower, and
power connections between the motor and blower, an air pipe extending from said
rotary blower, and connected to a vertically moving socket engaging with the blow
pipe, and air pipes extending downwardly, at the sides of the machine having valves
at their lower ends, substantially as set forth.
24. In a glass blowing machine, the combination of a frame, a hinged sectional
blow mold mounted thereon, a motor supported on said frame, a rotary blower,
and power connections between the motor and blower, and an air pipe extending
from said rotary blower and connected to a vertically moving socket engaging with
the blow pipe, and a flexible depending air pipe connecting with a vertically
moving socket adapted to engage with the blow-pipe, substantially as set
forth.
25. In a glass blowing machine, the combination of a frame, a hinged sectional
blow mold mounted thereon, a motor supported on said frame, a rotary blower, and
power connections between the motor and blower, and an air pipe extending from
said rotary blower and connected to a flexible depending air pipe connecting with
a vertically moving socket adapted to engage with the blow-pipe, and valves in
said depending pipe and in said pipes leading to the blowing sockets, substantially
as set forth.
26. In a glass blowing machine, the combination with a blow-mold, of a blow-
pipe supported in line therewith, and a blowing socket having a flexible connection
with the air supply pipe, said blowing socket moving both vertically and horizon-
tally, so as to be drawn down upon the blow pipe, and lifted and drawn out of line
therewith, substantially as set forth.
27. In a glass blowing machine, the combination with a blow mold, of a blow-
pipe mounted in line therewith, and a blowing socket connected with the air supply
pipe, adapted when lowered to engage with the blow-pipe, and having a side move-
ment when raised, so as to be drawn out of line with the blow-pipe, substantially as
set forth.
28. In a glass blowing machine, the combination with a blow mold, of a blow-
pipe supported in line therewith, an air supply pipe having a flexible depending pipe
engaging with a blowing socket, a lever carrying said blowing socket, and having
a depending arm, and a cross shaft carrying a cam engaging with said arms, sub-
stantially as set forth.
29. In a glass blowing machine, the combination with a blow mold, of a blow-
pipe supported in line therewith, an air supply pipe having a flexible pipe engaging
with a blowing socket, a lever mounted in a suitable bracket on the machine, a cam
operating said lever, said blowing socket having a lug pivoted to said lever and
carrying an arm adapted to contact with the supporting bracket, substantially as
set forth.
30. In a glass blowing machine, the combination with a blow-mold, of a blow-
pipe supported in line therewith, an air supply pipe having a flexible pipe engaging
with a blowing socket, a lever mounted in a suitable bracket in the machine, a cam
operating said lever, said blowing socket having a lug pivoted to said lever and
B

page_text: carrying an arm adapted to contact with the supporting bracket, and a spring con-
necting said arm and the main lever, substantially as set forth.
Dated this 13th day of December, 1898.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.