US677577A - Dental forceps. - Google Patents
Dental forceps. Download PDFInfo
- Publication number
- US677577A US677577A US5630401A US1901056304A US677577A US 677577 A US677577 A US 677577A US 5630401 A US5630401 A US 5630401A US 1901056304 A US1901056304 A US 1901056304A US 677577 A US677577 A US 677577A
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- US
- United States
- Prior art keywords
- forceps
- fork
- handles
- jaws
- dental forceps
- 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
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Classifications
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- 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
- A61C3/16—Dentists' forceps or clamps for removing crowns
Definitions
- NrrED STATES -PATENT Enron NrrED STATES -PATENT Enron.
- My invention relates to an improvement in dental forceps; and my object is to provide an ordinary forceps with an attachment that will afford a free and painless extraction of crown pins from tooth-roots by an application of reciprocal forces. I attain these results by means of the mechanism shown in the accompanying drawings, in which- Figure 1 is a side view of the forceps with handles closed and locked. Fig. 2 is a side view of the forceps with handles and jaws opened and forked attachment extended from the ends of the jaws. Fig. 3 is aview of the forceps, showing the fork in extended position. Fig. is a view of the joint of the forceps, showing cross-section of the sides of the fork and grooves in which it slides. Referring to Fig.
- a and B represent the handles of the forceps; O, the locking device of the handles; D, the brace, firmly set in B and held by means of a nut cl.
- a thumbwheel E In the brace D is placed a thumbwheel E with shoulders containing threads within, through which the shaft F is screwed.
- the shaft F and the fork G are one piece, and the fork is placed in grooves astride the axis of the forceps, narrowing down at the point g.
- H and I represent the upper and lower jaws of the forceps, respectively.
- J is a spring holding the handles A and B in proper position.
- Fig. 1. represents the instrument closed.
- Fig. 2 shows the forceps with the jaws H and I open and the points 9 g of the fork G carried beyond them.
- the direction and position of the points 9 g of the fork G are controlled by the thumb-Wheel E.
- Fig. 3 represents the vertical position of the forceps, with the points g g of the fork G carried beyond the jaws II and I of the forceps.
- Fig. 4 shows in detail a transverse section of the instrument at the forcep-joint, in which G G represent the sides of the fork set in the grooves in which they slide.
- the crown-pin In operating with the forceps the crown-pin is grasped by the jaws H and I close to the tooth-root.
- the handles A and B are closed and held by the locking device.
- the ends g g of the fork G are set against the toothroot, and by turning the thumb-Wheel E the reciprocal forces of pulling and pushing are obtained without injuring or disturbing the tooth-root in its socket or causing pain to the patient.
Description
No. 677,577. Patented July 2, I901. H. N. LANCASTER.
DENTAL FOBGEPS.
(Application filed. Apr. 17, 1901.)
(No Model.)
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NrrED STATES -PATENT Enron.
HOWARD N. LANCASTER, OF CHICAGO, ILLINOIS.
DENTAL FORCEPS.
$PECIFICATION forming part Of Letters Patent NO. 677,577, dated July 2, 1901. Application filed April 17, 1901. Serial No. 56,304. (No model.)
To ctZZ whom it 712 663] concern.-
Be it known that I, HOWARD N. LANCASTER, a citizen of the United States, residing'at Chi: cago, in the State of Illinois, have invented a new and useful Improvement in Dental Forceps, of which the following is a specification.
My invention relates to an improvement in dental forceps; and my object is to provide an ordinary forceps with an attachment that will afford a free and painless extraction of crown pins from tooth-roots by an application of reciprocal forces. I attain these results by means of the mechanism shown in the accompanying drawings, in which- Figure 1 is a side view of the forceps with handles closed and locked. Fig. 2 is a side view of the forceps with handles and jaws opened and forked attachment extended from the ends of the jaws. Fig. 3 is aview of the forceps, showing the fork in extended position. Fig. is a view of the joint of the forceps, showing cross-section of the sides of the fork and grooves in which it slides. Referring to Fig. 1, A and B represent the handles of the forceps; O, the locking device of the handles; D, the brace, firmly set in B and held by means of a nut cl. In the brace D is placed a thumbwheel E with shoulders containing threads within, through which the shaft F is screwed. The shaft F and the fork G are one piece, and the fork is placed in grooves astride the axis of the forceps, narrowing down at the point g.
H and I represent the upper and lower jaws of the forceps, respectively.
J is a spring holding the handles A and B in proper position.
Fig. 1. represents the instrument closed.
Fig. 2 shows the forceps with the jaws H and I open and the points 9 g of the fork G carried beyond them. The direction and position of the points 9 g of the fork G are controlled by the thumb-Wheel E.
Fig. 3 represents the vertical position of the forceps, with the points g g of the fork G carried beyond the jaws II and I of the forceps.
Fig. 4 shows in detail a transverse section of the instrument at the forcep-joint, in which G G represent the sides of the fork set in the grooves in which they slide.
In operating with the forceps the crown-pin is grasped by the jaws H and I close to the tooth-root. The handles A and B are closed and held by the locking device. The ends g g of the fork G are set against the toothroot, and by turning the thumb-Wheel E the reciprocal forces of pulling and pushing are obtained without injuring or disturbing the tooth-root in its socket or causing pain to the patient.
What I claim as new, and desire to secure by Letters Patent, is
The combination with a pair of forcep beaks of a fork propelled through grooves by means of a thumb-wheel and threaded shaft; said thumbwheel being set in the forcep-handle.
HOWARD N. LANCASTER.
IVitnesses:
ELLA A. MA NUssoN, CORA J. BROWN. 7
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5630401A US677577A (en) | 1901-04-17 | 1901-04-17 | Dental forceps. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5630401A US677577A (en) | 1901-04-17 | 1901-04-17 | Dental forceps. |
Publications (1)
Publication Number | Publication Date |
---|---|
US677577A true US677577A (en) | 1901-07-02 |
Family
ID=2746124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US5630401A Expired - Lifetime US677577A (en) | 1901-04-17 | 1901-04-17 | Dental forceps. |
Country Status (1)
Country | Link |
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US (1) | US677577A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5403332A (en) * | 1993-11-15 | 1995-04-04 | Christoudias; George C. | Maritsa tissue approximator and method of using the same |
US20030207234A1 (en) * | 2002-05-03 | 2003-11-06 | Brilliant Margo K. | Double headed orthodontic ligature pliers |
-
1901
- 1901-04-17 US US5630401A patent/US677577A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5403332A (en) * | 1993-11-15 | 1995-04-04 | Christoudias; George C. | Maritsa tissue approximator and method of using the same |
US20030207234A1 (en) * | 2002-05-03 | 2003-11-06 | Brilliant Margo K. | Double headed orthodontic ligature pliers |
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