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US1378064A - Process of forming molds for dentists' use - Google Patents

Process of forming molds for dentists' use Download PDF

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Publication number
US1378064A
US1378064A US420078A US42007820A US1378064A US 1378064 A US1378064 A US 1378064A US 420078 A US420078 A US 420078A US 42007820 A US42007820 A US 42007820A US 1378064 A US1378064 A US 1378064A
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Prior art keywords
dentists
cup
forming molds
mold
forming
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US420078A
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Giuseppe E Terranova
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Priority to US420078A priority Critical patent/US1378064A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/044—Rubber mold

Definitions

  • GIU'SEPPE E. TERRAN' OVA, OF NEW HAVEN, CONNECTICUT.
  • FIG. 1 A perspective view of a flask for dentists use constructed in accordance with my invention.
  • FIG. 2 A top view of thesame showing a mold therein and indicating in broken lines the walls pulled away from the mold.
  • FIG. 3 A sectional view on the line 3-3 or Fig. 2.
  • This invention relates to an improvement in flexible flasks for dentists use, particularly for use as an investing cup in the -formation of bridge work.
  • the investment is made in plaster of Paris without a container.
  • the object of this invention is to provide permit their being properly connected
  • the invention consists in forming the cup from flexlble rubber so that when the material 1s hardened the cup can be readily removed without breaking, as hereinafter described and particularly recited in the claim.
  • this cup is oval and provided with a base 6 so that it will stand upright.
  • These cups are filled with'plastic composition and the caps to be invested are embedded in this composition which, when it is properly set, may be removed from the cup by expanding the wallsof the cup as indicated in broken lines in Figs. 2 and 3,'which frees the mold and permits it to be readily removed without breaking.
  • the process of forming molds for dentists use consisting in forming a mold of plastic material in a flexible cup and then expanding the sides of the cup to permit the removal of the mold.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Saccharide Compounds (AREA)

Description

G. ELTERRANO VA .PROCESSOF FORMING MOLDS FOR DENTISTS' USE- I APPLICATION FILED OCT, 28, 1920- 1,378,064, 7 Patented May 17,1921;
UNITED STATES PATENT OFFICE.
GIU'SEPPE E. TERRAN' OVA, OF NEW HAVEN, CONNECTICUT.
PROCESS OF FORMING MOLDS FOR DENTISTS USE.
Specification of Letters Patent.
Patented May 17, 1921.
Application filed October 28,1920. Serial No. 420,078.
Processes of Forming Molds for Dentists Use; and I do hereby declare the following,
when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in
Figure 1. A perspective view of a flask for dentists use constructed in accordance with my invention.
Fig. 2. A top view of thesame showing a mold therein and indicating in broken lines the walls pulled away from the mold.
Fig. 3. A sectional view on the line 3-3 or Fig. 2.
This invention relates to an improvement in flexible flasks for dentists use, particularly for use as an investing cup in the -formation of bridge work. Usually the investment is made in plaster of Paris without a container.
The object of this invention is to provide permit their being properly connected, and
the invention consists in forming the cup from flexlble rubber so that when the material 1s hardened the cup can be readily removed without breaking, as hereinafter described and particularly recited in the claim.
In carrying out my invention I form an mvesting cup 5 from flexible rubber. Preferably this cup .is oval and provided with a base 6 so that it will stand upright. These cups are filled with'plastic composition and the caps to be invested are embedded in this composition which, when it is properly set, may be removed from the cup by expanding the wallsof the cup as indicated in broken lines in Figs. 2 and 3,'which frees the mold and permits it to be readily removed without breaking.
I claim:
The process of forming molds for dentists use consisting in forming a mold of plastic material in a flexible cup and then expanding the sides of the cup to permit the removal of the mold.
In testimony whereof,'I have signed this specification in the presence of two subscribing witnesses.
Witnesses:
FRANoIs Rossr, ANTONIO CIRMO. v
e. E. VTERRANOVA.
US420078A 1920-10-28 1920-10-28 Process of forming molds for dentists' use Expired - Lifetime US1378064A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2566131A (en) * 1946-08-17 1951-08-28 Kleiner Willy Method for the molding of plastic articulators
US4155962A (en) * 1977-05-25 1979-05-22 Neefe Optical Laboratory, Inc. Method of removing molded lenses from the mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2566131A (en) * 1946-08-17 1951-08-28 Kleiner Willy Method for the molding of plastic articulators
US4155962A (en) * 1977-05-25 1979-05-22 Neefe Optical Laboratory, Inc. Method of removing molded lenses from the mold

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