US733320A

US733320A - Dental securing device.

Info

Publication number: US733320A
Application number: US11166902A
Authority: US
Inventors: William Everett Griswold
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-06-14
Filing date: 1902-06-14
Publication date: 1903-07-07
Anticipated expiration: 1920-07-07

Description

No. 733,320. PATENTBD JULY 7, 1903. W. E. GRISWOLD.

DENTAL SECURING DEVICE.

APPLIGATION FILED JUNE 14, 1902.

no MODEL.

W lT/VESSES:

Patented July '7, 1903.

PATENT OFFICE.

\VILLIAM EVERETT GRISVVOLD, OF NEW YORK, N. Y.

DENTAL SECURING DEVICE.

SPECIFICATION formingpart of Letters Patent No. 733,320, dated July 7, 1903. Application filed June 14, 1902. Serial No.111,669. (No model.)

To aZZ whom, it may concern:

Be it known that I, WILLIAM EVERETT GRIsWOLD,'a citizen of the United States, residing at New York, in the'county of New York and State of New York, have invented certain new and useful Improvements in Dental Securing Devices; and-I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to dentistry. Its ob ject is to provide dental securing devices that consist, essentially, of interlocking spring members adapted to be applied to opposing or opposite parts of the denture.

In the accompanying drawings, Figure l is a perspective of a portion of a jaw with an attaching device above ready to'be put in place. Fig. 2 aredetail perspectives of two complementary attaching devices known as the 'V-fastener. Fig. 3 is 'a division of an attaching device with an accompanying detail of a tension-spring. Fig. 4: is a perspective of the complementary securing devices of a T-fastening. Fig. 5 is a side elevation of a form of coil-spring adapted to be used. Fig. 6 is a section of the two parts joined. Fig. 7 is a side elevation of a form of coilspring. Fig. 8 is a perspective of the complementary parts of the L-shaped fastening devices. Fig. 9 is a vertical section of a spring-fastening, together with an enlarged detail of a spring used as a tension device. Fig. 10 is a side elevation of a tooth with one part of a form of fastening secured to it, and Fig. 11 is a section of a tooth and fastening secured.

In the drawingslhave illustrated what may be roughly termed three forms of fasten: ings-a l-fastening, a T-fastening, and an L-fastening. In all these fastenings I provide for a male member and a female member and an interlocking feature. Inthe V-fastening at Figs. 2 and 3 I have illustrated the female member as having a series of corrugations on the side and the male member as having ribs on the side which are adapted to engage the corrugations, the character of the engagement depending upon the distance the male member is forced into the female member. I may of course vary the ratio of the ribs and what may be roughly termed V shape, so

that the apex of the V when the male member is forced into the female member may close the opening in that member, forming a compact fastener, though in some instancesI may reverse the relative arrangement. The bottom of the male member maybe closed and the top of the member inclosing it may be covered over with a plate secured after the parts are placed so that the whole fastening is closed in. In Fig. 3 I have shown the V member with a spring. (Illustrated in detail below.) The spring may serve to tension the sides of the male member to force it out into an assured and firm contact with the corrugations of the female member where a peculiarly tight fit is desired. In the T-shaped member and the L-shaped member of Figsd to 9 I provide likewise for interlocking features; but in these devices I have illustrated salient points of a tension-spring or coil-spring with flaring arms as preferably passing through openings in the side of the male member, so that the points may press out into the corrugations of the female member, and thus secure the two together, as especially illustrated in the section of Fig. 6. The L and T devices have wings or flanges on the sides for the purpose of securing them to a crown, root-cap, or other feature and forming an attaching-base.

In the drawings, 1 represents the male V member; 2, the female member; 3, corrugations in the side of the female member; 4, ribs formed on the outside of the male member.

dis a spring adapted to be applied, if desired, to the male member.

6 is a closed bottom of the male member.

7 is a bevel shown on the top of the male member. ,There may beacorresponding bevel on the female member.

8 is the body of the male T-shaped mem her; 9, the body of the female T-shapedmember; 10, corrugations of that member; 11, perforations in the sides of the male member; 12, a coiled spring having its flaring ends bent to form salient points 13, which project through the perforations 11 and engage the corrugations or recesses l0. 14 is another form of coiled spring having salient points 15. This spring may be used instead of the spring 12, though requiring the perforations to be placed lower in the sides of the male members. These binding-springs and the one described hereinafter illustrate some of the forms which may be applied and indicate that the form of the spring is subject to many modifications.

16 is a bottom, which may be integral with the male member; 17, a plate which may be soldered on the top of the member inclosing it, thus covering the two devices when secured together.

18 represents wings or flanges on the side of the securing devices adapted to be attached 'tU-thebase of a root, crown, or cap.

In FignS I have applied the reference-letters as in the description and illustration preceding of the T-shaped fastener, Figs. 4 and 6.

In Fig. 9 the section may be regarded as a vertical section looking toward the front of the male member of Fig. 8. The figure is purposed merely to show the relative position of the modified spring 19 with its salient points 20.

In Fig. 10, 21 is a tooth. 22 is a slightlymodified male member of a T-shaped fastening secured to the tooth, the rounded sides of the fastening permitting the perforations 11 to show.

In Fig. 11, 21 is asection of a tooth, with the male member 8 and the spring 19 in position, illustrating the manner in which a long wing or flange may pass around the curve of a tooth or crown to secure a firmer attachment or add a base.

In Fig. 1, 23 is a wire to which is soldered at opposite ends two female members 2 of the V-shaped fastening. The wire 23 may be inclosed in vulcanite or soldered to a saddle, and the female members may then be forced down over the male members 1, one of which is shown attached to a crown 25, the other to a root-cap 26, both being shown in place on a portion of the jaw (or'a model) 24. The beveled edges of the male member permit the user to readily find the proper position in placing the vulcanite or saddle, especially when the female member is correspondingly beveled or flared. Hitherto I have described these spring-fastenings with general reference to the common features.

There are specific features of detail in the fastening of Figs. 1, 2, and 3 which require further description. The-female member 2 has, as illustrated, a back 30,which may form as soldered to the root-cap. The member 2 has also two converging

sides

31 and 32,which may yield on the introduction of the male member, the narrow opening between the sides being closed by the apex of the male member. 33 indicates an upward bend or flare given the metal, so that it may more readily take over the beveled portion 7 of the male member when applied as illustrated in Fig. 1, for example. In the member 1 there are two diverging

sides

34 and 35, which diverge from the apex 36. The diverging sides are bent to form two approaching

lips

37 and 38 with a sufficient interval to provide for the desired spring of the metal. When the male member is applied to the female member as previously described, the apex 36 will project slightly through the opening between the

sides

31 and 32 of the member 2, while the

lips

37 and 38 will lie against the flat back 30, so that the member 1 may readily be forced into the member 2 without having any sharp edges of the member 1 interfere with such fit, and at the same time there is provided a solid supporting-back for the combined members as thus joined. I have shown ribs 4 on the member 1 and have also in Fig. 3 illustrated a simple spring which may tension the member 1 against the sides of the member 2 when in place. his obvious that instead of the ribs 4 I may provide the perforations 11, as illustrated in Figs. 4 to 10, and apply the coiled spring with salient points, as illustrated in those figures.

In Fig. 11, as described, the application and use of the Wings are illustrated. These wings facilitate soldering to the crown. The wings on the male member lie upon and embrace the female member and close in the whole, so that it may be finished smoothly. The wings form a claspwhich extends partially around the tooth and may be used as a surface to build porcelain against in making a porcelain denture, so as to give a close-denture between the removable parts and the stationary crown. They also make the work more rigid and strengthen the denture to resist lateral strain.

Having fully described my invention, what I claim is- 1. A dental spring-metal securing device comprisinga female member having converging sides, a male member having diverging sides and adapted to close the opening between the converging sides of the female member.

2. A dental spring-metal securing device comprising a female member having converging sides, a male member having diverging sides, and complementary interlocking ribs and recesses.

3. A dental spring-metal securing device comprising a female member having converging sides, and a male member having diverging sides and approaching lips.

4. A dental spring-metal securing device IIO comprising a female member, a substantially V-shaped male member, adapted to fit into and be inclosed by the female member and perforations to engage the corrugations or recesses.

6. A dental securing device comprising to close the opening between the sides of the complementary ribbed and recessed parts,

5 female member, and means for closing the top and bottom of the combined members.

5. A dental spring-metal fastening comprising a male member having perforations in its sides, a female member having corrugations or recesses in its sides, and a spring bent to present salient points through the and a binding-spring.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM EVERETT GRISWOLD. Witnesses:

ARNA E. HAYDEN, N. M. L. PANUSHKA.