US902A - Vertical tooth-extractok - Google Patents
Vertical tooth-extractok Download PDFInfo
- Publication number
- US902A US902A US902DA US902A US 902 A US902 A US 902A US 902D A US902D A US 902DA US 902 A US902 A US 902A
- Authority
- US
- United States
- Prior art keywords
- tooth
- claws
- lever
- extractok
- vertical tooth
- 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
Links
- 210000000078 Claw Anatomy 0.000 description 24
- 210000003414 Extremities Anatomy 0.000 description 2
- 210000003141 Lower Extremity Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001747 exhibiting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
- A61C3/14—Dentists' forceps or the like for extracting teeth
Definitions
- Figure l represents a perspective view of the instruments entire.
- Fig. 2 the short plate.
- Fig. 3 the claws and supporting plate.
- Fig. 4 the claws and supporting plate.
- a short lever B On the upper side and near this aperture, connected by a suitable joint is a short lever B, from that end of which directly over the aperture projects two pivots which pass through the claws, and a supporting plate C, on which pivots the claws turn, and are secured by a screw or in any other convenient way.
- the claws thus situated are made in a circular form, and turn on the above mentioned pivots near their centers on the under side of this lever, near the outer end I attach two springs which extend beyond the outer end, running parallel with the lever, and act upon the inside of the lower extremities of the claws, for opening them when the pointed lever is withdrawn.
- Modus 0pemndz' The tooth plate A ⁇ is placed upon the teeth adjoiningthe one to be extracted, with the aperture directly over it, the claws being placed on each 'side are made to adhere by means of the lever E working into the upper ends when the tooth is immediately withdrawn, by contracting the outer extremities of the tooth plate and lever. l/Vhen necessary to extract the tooth farthest back in the jawthe plate A is removed and another F, is placed in its stead the flattened endof which extends only to the claws and thus permits of their action on such a tooth whereas. the other would not.
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)
- Developing Agents For Electrophotography (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Toys (AREA)
Description
UNITED STATES PATENT onirica.N
DAVID H. DICKEY, OF BOSTON, MASSACHUSETTS.
VERTICAL TOOTH-EXTRACTOR.
Specicaton of Letters Patent No. 902, dated August 30, 1838.
T0 all whom it may concern.'
Be it known that I, DAVID H. Dromer, of Boston, in the county of Su'olk and State of Massachusetts, have invented a new and useful Improvement in Instruments for EX# tracting Teeth, which I denominate Dickeys Vertical Tooth-Extractor; and I do hereby declare that the following is a full and exact description thereof, reference being had to drawings accompanying and making part of this specification.
In the accompanying drawings Figure l represents a perspective view of the instruments entire. Fig. 2, the short plate. Fig. 3, the claws and supporting plate. Fig. 4,
Vthe short" lever reversed exhibiting the springs. Y
I construct mj vert-ical tooth extractors from steel or any other suitable metal, and that part called the tooth-plate is made from a rod of any suitable length and flattened at that end which rests upon the teeth adjoining the one to be extracted, through which flattened part or end an aperture is made suftlciently large to ,admit of the action of the claws on the tooth. On the upper side and near this aperture, connected by a suitable joint is a short lever B, from that end of which directly over the aperture projects two pivots which pass through the claws, and a supporting plate C, on which pivots the claws turn, and are secured by a screw or in any other convenient way. The claws thus situated are made in a circular form, and turn on the above mentioned pivots near their centers on the under side of this lever, near the outer end I attach two springs which extend beyond the outer end, running parallel with the lever, and act upon the inside of the lower extremities of the claws, for opening them when the pointed lever is withdrawn. Directly back of the claws and on the upper side of this lever is 'a projection D through which is an aperture, and on the outer end is a similar projection H, in which is formed a female screw, Through these two projections passes another lever E extending fromthe outer end of the instrument to the claws, that end of which nearest the claws is made pointed and forms a revolving wedge, which point tioned supporting plate is to prevent the ex-V pansion of the claws during the operation.
Modus 0pemndz'.-The tooth plate A `is placed upon the teeth adjoiningthe one to be extracted, with the aperture directly over it, the claws being placed on each 'side are made to adhere by means of the lever E working into the upper ends when the tooth is immediately withdrawn, by contracting the outer extremities of the tooth plate and lever. l/Vhen necessary to extract the tooth farthest back in the jawthe plate A is removed and another F, is placed in its stead the flattened endof which extends only to the claws and thus permits of their action on such a tooth whereas. the other would not.
That I claim as my invention and desire to secure by Letters Patent in the above described vertical tooth extractor is- 1. The lever C working in the female screw, with one end pointed, and forming a revolving 4wedge, for opening the upper parts of the forceps thereby contracting the lower or that part which is made to adhere to the tooth in combination with other parts j DAVID H. DIOKEY.
Witnesses:
JOHN W. HUBBARD,
ABEL GAY.
Publications (1)
Publication Number | Publication Date |
---|---|
US902A true US902A (en) | 1838-08-30 |
Family
ID=2061188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US902D Expired - Lifetime US902A (en) | Vertical tooth-extractok |
Country Status (1)
Country | Link |
---|---|
US (1) | US902A (en) |
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0
- US US902D patent/US902A/en not_active Expired - Lifetime
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