US649624A - Manufacture of artificial teeth. - Google Patents

Manufacture of artificial teeth. Download PDF

Info

Publication number
US649624A
US649624A US74090899A US1899740908A US649624A US 649624 A US649624 A US 649624A US 74090899 A US74090899 A US 74090899A US 1899740908 A US1899740908 A US 1899740908A US 649624 A US649624 A US 649624A
Authority
US
United States
Prior art keywords
teeth
manufacture
pins
platinum
artificial
Prior art date
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
Application number
US74090899A
Inventor
Friedrich August Wienand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US74090899A priority Critical patent/US649624A/en
Application granted granted Critical
Publication of US649624A publication Critical patent/US649624A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A61C13/10—Fastening of artificial teeth to denture palates or the like
    • A61C13/1003—Fastening of artificial teeth to denture palates or the like by embedding in base material
    • A61C13/1009—Anchorage members, e.g. pins or bars; Means or methods for affixing pins to porcelain teeth

Definitions

  • Myinvention relates to the manufacture of artificial teeth.
  • the quality of the artificial mineral teeth is not only greatlyim proved, but the cost of manufacture of such teeth provided with nickel pins or with nickel pins plated with platinum as compared with that of artificial mineral teeth as hitherto made is enormously reduced. It is therefore possible to keep a large stock of teeth, such as is absolutely needful in the case of a den tist, Who under these circumstances-does not require much capital, although these teeth fulfil all requirements like those having platinum pins.
  • What I claim is- A process for manufacturing artificial mineral teeth provided with nickel pins, or nickel pins plated with platinum, which consists in firing and cooling such teeth in vessels Wherein a vacuum is produced, in order to prevent the oxidation :0f the pins and to obtain a denser fusing of the teeth.

Landscapes

  • 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)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

UNITnD STATES PATENT OFFICE.
FRIEDRICH AUGUST IVIENAND, OF PFORZI-IEIM, GERMANY.
MANUFACTURE OF ARTIFICIAL TEETH.
SPECIFICATION formin part of Letters Patent No. 649,624, dated May 15, 1900.
Application filed December 19, 1899. Serial No. 740,908. (No specimens.)
To all whom, it may concern.-
Be it known that I, FRIEDRICH AUGUST VVIENAND, manufacturer, a subject of the Emperor of Germany, residing at 18 Gartenstrasse, Pforzheim, Grand Duchy of Baden, in the Empire of Germany, have invented certain new and useful Improvements Relating to the Manufacture of Artificial Teeth, of
- which the following is a specification.
Myinvention relates to the manufacture of artificial teeth.
For years it has been customary to fasten artificial mineral teeth by means of platinum pins, which are embedded in the mineral material during the molding and project from the back of such teeth. These pins serve to establish the connection between the teeth and the rubber or metallic tooth-plate. As platinum is very expensive, but has been absolutely necessary by reason of the high melting temperature of the material of the mineral teeth, such as no other metal but platinum withstands, attempts have been made to employ pins of various alloys of platinum and platinum tubes, which are baked in the teeth and into which the pins made of alloys are then soldered or cemented, with a view to reducing the amount of platinum, and consequently the cost of the teeth. All these methods are of a very primitive nature, and many of them are altogether impracticable because the pin fastening device consists, not of one whole, but of parts, thus greatly diminishing the strength, while the expense is still very great, as platinum is indispensable with these methods. After numerous experiments I have succeeded, by the use of an improved process of manufacture of artificial teeth, to render nickel pins or nickel pins plated with platinum available for fastening such teeth. According to my invention the artificial teeth furnished with nickel pins embedded during the molding in the mineral material of the tooth are conveyed in air-tight nickel vessels wherein a vacuum has been produced, into the furnace and fired. By this process I preclude the burning or oxidation of the nickel pins and render them pliable in the air-tight exhausted vessels,
heated to a temperature of 1,250 to 1,400 while the mineral material also fuses.
Mineral teeth have heretofore been fired openly upon a chamotte plate after they have been molded and cleaned. After the firing the plate is removed from the furnace and left to 0001. In this operation it often hap= pens that teeth become cracked; but the defoot is not noticed with the naked eye until the teeth are manipulated by the dentist, when the cracked teeth break. With myin- 6o vention this defect is obviated, because, as before stated, the artificial teeth are fired in air-tight exhausted vessels to which no air can obtain access on the removal from the furnace. Furthermore, the vessel is placed for cooling in a hermetically-closed appara-' tus which is heated, the air being Withdrawn from the same by means of a jet-pump, so that the cooling will take place very gradually. By this invention the quality of the artificial mineral teeth is not only greatlyim proved, but the cost of manufacture of such teeth provided with nickel pins or with nickel pins plated with platinum as compared with that of artificial mineral teeth as hitherto made is enormously reduced. It is therefore possible to keep a large stock of teeth, such as is absolutely needful in the case of a den tist, Who under these circumstances-does not require much capital, although these teeth fulfil all requirements like those having platinum pins.
What I claim is- A process for manufacturing artificial mineral teeth provided with nickel pins, or nickel pins plated with platinum, which consists in firing and cooling such teeth in vessels Wherein a vacuum is produced, in order to prevent the oxidation :0f the pins and to obtain a denser fusing of the teeth.
In testimony whereof I have hereunto set my hand, in presence of two subscribing witnesses, this 28th day of November, 1899.
FRIEDRICH AUGUST WIENAND.
Witnesses:
JACOB ADRIAN, UJY SIEBERT.
US74090899A 1899-12-19 1899-12-19 Manufacture of artificial teeth. Expired - Lifetime US649624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US74090899A US649624A (en) 1899-12-19 1899-12-19 Manufacture of artificial teeth.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74090899A US649624A (en) 1899-12-19 1899-12-19 Manufacture of artificial teeth.

Publications (1)

Publication Number Publication Date
US649624A true US649624A (en) 1900-05-15

Family

ID=2718194

Family Applications (1)

Application Number Title Priority Date Filing Date
US74090899A Expired - Lifetime US649624A (en) 1899-12-19 1899-12-19 Manufacture of artificial teeth.

Country Status (1)

Country Link
US (1) US649624A (en)

Similar Documents

Publication Publication Date Title
US649624A (en) Manufacture of artificial teeth.
GB2117402A (en) Processing copper beryllium alloys
US1162339A (en) Method of making composite metal bodies.
USRE20877E (en) Cast metaixjc dentobe
US1958446A (en) Cast metallic denture
US1953075A (en) Dental investment composition and process
US2310732A (en) Alloy and dental article
US1063376A (en) Process of making porcelain inlays.
US1555315A (en) Pin for artificial teeth, small rings, fusing-in wires, and the like
US2381625A (en) X-ray tube anode seal
US1160428A (en) Art of metal-working.
JP6484586B2 (en) Method for producing electroformed material and method for producing structure
US1406730A (en) Process fob molding
USRE5572E (en) Improvement in compositions for dental plates
US633071A (en) Artificial tooth.
US868109A (en) Method or process of making artificial teeth.
US108806A (en) Improvement in the manufacture of gold-foil for dental purposes
US871430A (en) Artificial tooth.
KR101828981B1 (en) Co-Cr based alloy for dental porcelain fused metal using vacuum precision casting and manufacturing method thereof
US1162341A (en) Composite metal body.
US1411781A (en) Process of making double-walled glass vessels
US1071174A (en) Process of working refractory metals.
US1424782A (en) Alloy
US1023299A (en) Method of making meter-jewels.
DE3609132C2 (en)