US805335A - Plunger for glass-blowing machines. - Google Patents

Plunger for glass-blowing machines. Download PDF

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Publication number
US805335A
US805335A US15147703A US1903151477A US805335A US 805335 A US805335 A US 805335A US 15147703 A US15147703 A US 15147703A US 1903151477 A US1903151477 A US 1903151477A US 805335 A US805335 A US 805335A
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United States
Prior art keywords
plunger
glass
blowing machines
head
opening
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US15147703A
Inventor
Harry Bard
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Millville Manufacturing Co
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Millville Manufacturing Co
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Filing date
Publication date
Application filed by Millville Manufacturing Co filed Critical Millville Manufacturing Co
Priority to US15147703A priority Critical patent/US805335A/en
Application granted granted Critical
Publication of US805335A publication Critical patent/US805335A/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/06—Construction of plunger or mould

Definitions

  • Figure 1 is a view of a blank or press mold with the plunger within the mass of glass charged into the same.
  • Fig. 2 is a full-sized View of the plunger and its connected parts in section.
  • Fig. 3 is a sectional plan view on the line a a, Fig. 2; and
  • Fig. 4 is a perspective view of the separable part of the plunger.
  • a movable member 4 is carried, which member is grooved at 5 and is provided with an enlarged opening 6, through which passes a pin 7, securing it to the plunger. This arrangement provides for a-certain amount of movement between said plunger and the movable piece.
  • This movable piece has an enlarged head 8, shaped like the head of an ordinary screw, and this fits the beveled portion 9 in the end of the plunger. I/Vhen the plunger is inserted in the glass, the movable piece is pressed up into the tubular portion of the plunger and stays there until the plunger is started out of the glass.
  • the movable piece is not necessarily of the shape shown, but must be so shaped and arranged as to provide for the passage of air around the same and must have a head exactly fitting the plunger when the two are brought together as they are forced into the glass.
  • the upper portion of the movable piece may also be tapered, and in some instances such piece may be tapered from end to end.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Description

No. 805,335. PATENTED NOV. 21, 1905.
- H. BARD. I
PLUNGER FOE GLASS BLOWING MACHINES.
urmoumn FILED APR. '1. 190a.
UNITED STATES PATENT OFFICE.
HARRY BARD, OF MILLVILLE, NEW JERSEY, ASSIGNOR TO MILLVILLE MACHINE COMPANY, OF MILLVILLE, NEW JERSEY, A CORPORATION OF NEW JERSEY.
Specification of Letters Patent.
Patented Nov. 21, 1905.
Application filed April 7, 1903- Serial No. 151,477. I
ing of the glass in the blank or press molds in the manufacture of bottles having necks of contracted area. My invention is fully shown in the accompanying drawings, in Which Figure 1 is a view of a blank or press mold with the plunger within the mass of glass charged into the same. Fig. 2 is a full-sized View of the plunger and its connected parts in section. Fig. 3 is a sectional plan view on the line a a, Fig. 2; and Fig. 4 is a perspective view of the separable part of the plunger.
In the blowing of hollow glassware by ma chinery it is necessary, of course, to insert a plunger in the mass of glass within the pressmold for the purpose of forming the neck and head of the bottle and the preliminary recess to receive the air to finish the article. WVhen making bottles or other hollow ware having contracted openings, it is necessary to provide a straight plunger, as such plunger finishes the internal wall of the neck and head. In using a straight plunger, however, great difiiculty is experienced in withdrawing such plunger from the mass of glass after it has been entered into the same; and the object of my invention is to overcome this difiiculty and insure the ready and immediate withdrawal of the plunger after it has effected the preliminary recessing of the glass. To prevent the plunger sticking in the mold, such sticking being due normally to a vacuum between the plunger and the mass of glass, I make the plunger 1 hollow, with an opening 2 extending through the same and communicating near the upper part of the plunger to the atmosphere through an opening 3. In the lower part of this opening or recess 2 a movable member 4: is carried, which member is grooved at 5 and is provided with an enlarged opening 6, through which passes a pin 7, securing it to the plunger. This arrangement provides for a-certain amount of movement between said plunger and the movable piece.
This movable piece has an enlarged head 8, shaped like the head of an ordinary screw, and this fits the beveled portion 9 in the end of the plunger. I/Vhen the plunger is inserted in the glass, the movable piece is pressed up into the tubular portion of the plunger and stays there until the plunger is started out of the glass. At this time the slightest movement of the plunger, which might even cause movement of the glass, is suflicient to separate.the plunger from the movable piece, which necessarily remains in its lower position due to the force of gravity, and this slight separation between the parts is sufficient to admit air from the atmosphere which passes through the tubular portion of the plunger, thereby breaking the vacuum created by the plunger when it is inserted in the glass, and the plunger may be then removed withoutdifficulty. The movable piece is not necessarily of the shape shown, but must be so shaped and arranged as to provide for the passage of air around the same and must have a head exactly fitting the plunger when the two are brought together as they are forced into the glass. Instead of having simply a tapered head the upper portion of the movable piece may also be tapered, and in some instances such piece may be tapered from end to end.
Having thus described my invention, I claim and desire to secure by Letters Patent The combination ofa hollow,elongated plun ger for-use with glass-blowing machines, having an upper opening communicating with the atmosphere and a lower opening with a flared or beveled mouth, a short movable plug fit- .ting the hollow bore of the plunger at its lower end, said plug being grooved for the passage of air, a head carried by said plug and shaped to fit the flaring mouth of the plunger and serving to fully close the lower opening, and a pin carried by the plunger and confining the plug to the same, said plug being slotted to receive the pin and provide for slight movement with respect to the plunger.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
' HARRY BARD.
Witnesses:
WM. A. LOGUE, B. F. HIREs.
US15147703A 1903-04-07 1903-04-07 Plunger for glass-blowing machines. Expired - Lifetime US805335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15147703A US805335A (en) 1903-04-07 1903-04-07 Plunger for glass-blowing machines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15147703A US805335A (en) 1903-04-07 1903-04-07 Plunger for glass-blowing machines.

Publications (1)

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US805335A true US805335A (en) 1905-11-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942319A (en) * 1957-11-22 1960-06-28 Oglebay Norton Co Apparatus for and method of providing a protective lining on a hot top
WO2002044035A2 (en) * 2000-10-19 2002-06-06 Kozora Joseph W Plunger for the manufacturing of glass containers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942319A (en) * 1957-11-22 1960-06-28 Oglebay Norton Co Apparatus for and method of providing a protective lining on a hot top
WO2002044035A2 (en) * 2000-10-19 2002-06-06 Kozora Joseph W Plunger for the manufacturing of glass containers
WO2002044035A3 (en) * 2000-10-19 2002-08-15 Joseph W Kozora Plunger for the manufacturing of glass containers

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