US780919A

US780919A - Dentometer.

Info

Publication number: US780919A
Application number: US21672904A
Authority: US
Inventors: Ned Shockley
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-07-15
Filing date: 1904-07-15
Publication date: 1905-01-24
Anticipated expiration: 1922-01-24

Description

PATENTED JAN. 24, 1905.

- NQYSHOCKLEY.

DENTOMETER.

APPLICATION FILED JULY 15 1904.

/VdJ/zaa/Zk Witnesse Inventor,

I I Y I Httorbegs;

' from that shown in Fig. 1.

UNITED STATES Patented January 24, 1905.

NED SHOCKLEY, OF FARRAGUT, IOWA.

DENTOIVIETER.

SPECIFICATION forming part of Letters Patent No. 780,919, dated. January 24, 1905. Application filed July 15, 1904:. Serial No. Z16,'729.

To all whom, it may concern.-

Beit known that I, NED SHocKLEY, a citizen of the United States, residing at Farragut, in the county of Fremont and State of Iowa, have invented a new and useful Dentometer, of which the following is a specification.

This invention relates to dentometers.

The object of the invention is to provide an implement of the character specified which shall be simple of construction, thoroughly efiicient and durable in use, and which with readiness and case may be manipulated to make exact the measurements of the circumference of teeth to which the bands are to be applied.

With the above and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of a dentometer, as will be hereinafter fully described and claimed.

' In the accompanying drawings, forming a part of this specification, and in which like characters of reference indicate corresponding parts, there is illustrated one form of embodiment of the invention capable of carrying the same into practical operation, it being understood that the elements therein exhibited may be varied or changed as to shape, proportion, and exact manner of assemblage without departing from the spirit thereof.

In the drawings, Figure 1 is a view in elevation viewed from the graduated side of the shank. Fig. 2 is a view in elevation taken at right angles to Fig. 1 with the handle detached from the shank. Fig. 3 is a detail view of the measuring-band. Fig. 4. is a view of one end of the shank, taken from the opposite side Fig. 5 is a sectional detail view of the terminal of the shank.

Referring to the drawings, 1 designates the shank or stock of the implement, and 2 a handle detachably connected therewith and provided with a scriber 3, the function of which will presently appear. The shank may be made of any suitable material, preferably of steel and plano-convex in cross-section, the

plane or flat side being provided with a graduated scale 4, preferably laid off with the metric system. The handle 2 may be made of any suitable material, such as wood or bone,

having a ferrule combined therewith and provided with the scriber, or it may be of a solid piece of metal of the same or other character as the shank. The handle is provided with a threaded stem 5,'designed to engage a threaded extending beyond the shoulders 8 of the head,

forming thereby an opening 9, that extends entirely through the end of the tapered portion of the shank adjacent to the said shoulders. The tapered portion is further provided with a guide 10, which is by preference integral with the structure, although, if preferred, it may be made as a separate element and suitably combined therewith.

Mounted upon the shank is a slide 11, carrying a set-screw 12, by which to hold it at any desired adjustment, the slide being provided with a pointer 13, adapted to coact with the scale 4. in ascertaining measurements. The slide is provided with a longitudinal slit 14., adapted to receive one end of a measuringband 15, the same being held therein by a screw 16, passing through an opening 17 in the band and seated in the slide. The band may be made of any suitable material, preferably of thin flexible steel, and is adapted to pass through the guide 10, then through the orifice 7, where it is formed into a loop the neck of which is disposed in alinement with the longitudinal center of the shank and is held against separation from the shank by a head 18, which bears against one of the shoulders 8. The advantage of employing a thin metallic tape over a wire is that it more readily conforms to the contour of the tooth to be measured and, further, can be readily inserted between the teeth that are closely juxtaposed, where an ordinary wire, such as usually employed,

could not readily be positioned. In assembling the band with the shank the end having the opening 17 is inserted from the back of the head through the orifice 7, thence bent into a loop, and the said end is again inserted through the orifice from the end of the shank, is passed through the guide 10, and is secured in the slit 14 in the manner described. It will be noted by reference to Fig. 5 that the metal of the shank contiguous to the head forms a septum for keeping the two limbs of the band divided, and by the eoaction between the head 18 of the band and the shoulder 8 the former will positively be held against aecidental separation in use.

In using the device the slide is pushed forward toward the tapered end of the shank in order to distend or open the loop of the band, and this loop is then positioned around the tooth, after which the slide is drawn back, causing the band tightly to impinge the tooth. The operator then notes the graduation-mark on the scale opposite which the pointer stops, and the slide is then pushed forward to distend the band and permit its removal from the tooth. The slide is then returned to the graduation-mark to which it was moved in the measurement of the tooth, and the setscrew is tightened. The gold plate to form the band is then laid upon the flat side 'of the implement, with one end against the pointer and the scriber bearing against its under face. By giving a slight movement to the plate the scriber will make a mark, and the length of the plate from the pointer to the scriber-mark is exactly the length that the band is to be. The measurements secured are absolutely accurate and may be relied upon under all conditions.

While the device of the present invention is exceedingly simple of construction, it will be found thoroughly efficient and. practical in use and may be readily and quickly operated to obtain the desired measurements. It is also exceedingly durable, the only portion liable to destruction being the measuringband, and this may readily be replaced in case of the band being provided with a head to hold it against separation from the shank-terminal, and its other end being connected with the slide.

2. 'A dentometer comprising a graduated shank having a shouldered terminal provided with a longitudinal orifice, a slide on the shank coacting with the graduations thereof, and a looped 111easuring-band having its members disposed within the orifice and its neck arranged in alinement with the longitudinal center ofthe shank, one end of the band being provided with a head coacting with one of the shoulders to hold it against separation from the shank-terminal, and its other end being connected with the slide.

3. A dentometer comprising a graduated shank having a longitudinally-oriliced terminal, a slide on the shank coacting with the graduations thereof and provided with a longitudinal slit, a looped measuring-band having its members disposed within the orifice and its neck arranged in alinement with the longitudinal center of the shank, one end of the band being provided with a head to hold it against separation from the shank and the other end disposed within the slit of the slide, and means for securing the latter end within the slit.

4. A dentometer comprising a graduated shank having a longitudinally-orificed terminal and a guide, a slide on the shank coacting with the graduations thereof, and a looped measuring-band having its members disposed -within the orifice and its neck arranged in alinement with the longitudinal center of the shank, one end of the band being provided with a head to hold it against separation from the shank and the other end of the band being passed through the guide and secured to the slide.

5. A dentometer comprising a shank having a tapered end terminating in an oriiieed head, a slide on the shank, and a looped measuringband having its members disposed within the orifice and its neck arranged in alinement with the longitudinal center of the shank, one end of the band being provided with means coacting with the head to hold it against separation from the shank-terminal and the other end being connected with the slide.

6. A dentometer comprising a shank provided with a tapered end terminating in an orificed head and provided with a guide, a slide on the shank provided with clamping means, and a looped measuring-band having its members disposed within the orifice and its neck arranged in alinement with the longitudinal center of the shank, one end of the band being provided with means coacting with the head to hold it against separation from the shank, and the other end being detachabl y connected with the slide.

7. A dentometer comprising a graduated shank having at one end a longitudinally-orificed terminal and near its other end a scriher, a slide on the shank coacting with the graduations thereof, and a looped measuring-haml ICC having its members disposed in the orifice and its neck arranged in alinement with the 11- In testimony that I claim the foregoing as my own I have hereto afiixed my signature in gitudinal center of the shank, one end of the the pr of tWO Wi nesses.

band being provided With the head to hold i against separation. from the shank-termina and its other end being connected with th slide.

NED SHOOKLEY. Witnesses:

A. D. COLEMA E. N. CRAFT.