US1140660A - Wax-extractor. - Google Patents

Description

WILIAM J. BBIZIUS, OF I'OS ANGELES, CALIFORNIA.

WAX-EXTBACTOB.

Specification of Letters Patent.

Patented May 25, 1915.

Application flled ;kumamv 9, 1915.l Serial No. 1,474.

To HZZ whom z't may-concern: I

Be it known that I, WILLIAM J. Bmzrcrs,

a citizen of the United States, residingat' Los Angeles, inthe county of Los Angeles and 'State of California, have -invented 'a new and 'useful 'Wax-Extractor, of lwhich the following is a specification'.``

My inven-tion relatesf'to dental instruments, and especially' to instruments usedv for removing excess Wax from Wax impressions used in old inlayzwork. In such Work' e' inlaid is first shapedso that' it Will provide'a proper support for the in-' the cavity to lay, and this cavityis then filledv With Wax; the projecting portion of thewax' being rounded out to 'conform tothe v'original shapel of the tooth. The Waximpression'is then removed' andf'is used as a pattern vto form a mold in which the gold inlay is east,

the go'ldfinlay When finished being the same' size and shape' as the Wax-impression orfpatterm" The inlay is 'then cemented into'v thecavity.

The principalobjectof thel invention--is to' provide an instrument' by Which'small -portions of Wax may'be removed' frornthe i proper 'looking and Wearing quali-ties on accounti'of the actual costj of the-.gold itself:

With my invention lanydesiredamount .of Wax may be' removedfrom the impression so vthat on'ly 'a shell' of gold is produced, this shell being filled With and embeddedin 'cement' When in place.

f As it takes 'some time to prepare Wax impressions,-and 'they' are therefore 'valu'a'ble;` it i's very necessaryl thatan'y instrument' intendedifor the 'above purposefbe soconstructed that the operator Will not beilikely to injure'the 'impression in removing superfluous Wax and so that the amount-'of Wax removedcan be reg'ulatedv exactly.

A furth'en object of' my invention' is zto provide a Wax :extractor by which *small particlesof Wax. may be' 'removed -from -an impression lwithout dangerV of Yinjuring-the impression,v the operator having complete control'of the amount of Wax removed at all' times.

Further' objects and advantages Will .be evidenti hereinafter.

In the' annexed draw'in'g, Which is for illustrative' purposes only Figure 1 is a side view of'the Wax extractor With its connecting Wires and tubing shown broken off. Fig. 2 is an en-larged section on the plane wL-wz'of Fig. 1. Fig. 3 is a further enlarged section on thepla-ne :va-wa of Fig. 2. Fig.' .4 is a similarly'enlarged section on the plane" :nt-m4 of Fig. 2.

As illustrated in the draWing, the extractor consists of a central metal tube 11 Whichfv has'a head 12 brazed into the for- Wa-rd' end thereof, the head 12 having an extraction tube 18, which is preferably of silver,'bra'z'edtherein. Th'e extracting tube 13 is provided-With a centralopening 14 Which communicates With a cylindrical openingl 15 Which extends completely through the center of the metal tube ll'from the head 12 to the -rear end 16. Mica insulation 17 is Woun'd'on the metaltube 11, and an electric heating element' 18 i'is Wound on the mica, being-insulated'fromthe metal vtube 11 by the mica.- A layer of'asbestos 19 is placed over the heating element 18,' and a shell 20 is secured over 'the asbestos -19 as shown in Fig. 2, and seeured' to 'a' plug 21 by a set screW 22. The shell 20 is `preferablyv formed of insulatingmateriaL'- Th'e plug 21 isslipped over the' metal tube 11 and is secured in place on the-tubeby'means' ofa set'screw 22', the plug-21 having 'a projectionextending inside' Vthe-'shell 20 .for 'supporting the shell 20 at`-the`E rear i end. Wires 23 and 24' pass through the plug 21 and communicate With the heating-element 18, the wires 28 and 24 being externally connected to' any suitable source pf' electric =power` through any suitable' switch.:

A metallic band'25--slides over the junction of the shell 20 and the plug 21. A flexible'tuber 26' is securedover'the end 16 of the metal tube 11 and the) internal opening l27 inthat'tube is in 'open'communication With the opening 15 offthe'tube 11. A Wire member 28 has'a hand1e'293formedat one end, and has curved ortions 30 and 31 so shaped that they grip tlie' internal Walls of the tube 11 Whenthe Wire' 28 is pushed therein. A small bodyT of absofrbentv cotton 32 is tWisted about'fthe'end 'of the'-'wira'=-28j'and rests in the opening 15 close to the extracting tube 13. p

The method ofoperation of the invention is as folloWsz-The tube 26 is connected to any suotion means so that a slight vacuum is produced in the opening 27 and in the opening 15 inside the metal tube 11, this vacuum being constantly relieved by an infiow of airthrough the opening 14 in the extracting tube 13. Electric current being supplied through the wires 23 and 24, flows through the wires forming the heating element 18, and heat is generated therein. This heat is conducted through the mica 17 to the tube 11, and this heat is conducted by the metal tube 11 to the head 12 and to the ex- Wax, the Wax is melted by contact With the extracting tube and becomes liquid. The constant flow of air inwardly through the opening 14; draws the melted Wax through the opening 14 into the opening 15 inside the metal tube 11. This Wax fiows along the opening 15 and is finally absorbed by the cotton 32. At intervals the tube 26 is removed from the metal tube 11, and the Wire 28 and the absorbent cotton 32 are removed from the opening 15, fresh cotton being se- 4d cured to the Wire 28 as needed.

.I have found that it is possible by using my extractor to carve away very small por- `tions of Wax and to maintain an absolute control of the amount of Wax removed at 'any time. By the use of my Wax extractor, I can cut the walls -of the Wax impression down to an almost paper thinness Without in any Way affecting the external shape of the impression. lT can produce looking grooves or' cavities inside the impression into which the cement is forced when the tooth is .put in place. After the impression is suitably modified by the use of my Wax extractor, the gold inlay may be produced therefrom by any one of the several Well known methods.

My invention should not be confused With the various devices in common use in dentists offices .for heating air before it is forced from an orifice; Such devices cannot be used as my invention is used due to the fact that the heated Wax is forced out lagainst cold portions of the impression adlhering thereto and materially changing the niaaeco means for drawing the heated Wax through said opening away from said point.

2.-A Wax extractor comprising a handle, a small heated metal point carried insaid handle and having an opening therein, means for drawing the heated Wax through said opening away from said point, and absorbent means adjacent to said point for' collecting and retaining the heated Wax.

3. A Wax extractor comprising a metal tube, means for heating said tube, an extracting tube having a small opening therein secured in said metal tube, the opening in the extracting tube communicating with the interior of the metal tube, and means for causing a partial vacuum in the interior of the metal tube.

4. A Wax extractor comprising a metal tube, means for heating said tube, an extracting tube having a small opening therein secure'd in said metal tube, the opening in the extracting tube communicating with the interior of the metal tube, means for causing a partial vacuum in the interior of the metal tube, and absorbent means in said metal tube for collecting and retaining the melted Wax drawn into said metal tube through said extracting tube.

5. A Wax extractor comprising a metal tube 'having an extracting tube secured in one end thereof, said extracting tube having an opening communicating With the interior of said metal tube, insulating material wound on said metal tube, an electric heating element wound on said insulating material, means for supplying electricity to said heating element, and means for causing a partial vacuum in the interior of said metal tube.

6. A Wax extractor comprising a metal tube having an extracting tube secured in one end thereof, said extracting tube having an opening` communicating with the interior of said metal tube, insulating material wound on said metal tube. an electric heating element Woundon said insulating material, means for supplying electricity to said heating "element, means for causing a partial vacuum in the interior of said metal tube,

and absorbent means inside saidmetal tube for collecting and retaining the heated Wax drawn into said metal tube through said extracting tube.

7. A Wax extractor comprising a metal tubeohaving a small end and having an opening -extending longitudinally through said tube and said end,., an electric heating element wound on said tube and insulated' 1,14o,eeo

thererom, means forisupplying eleetricity to said heating element, a shell for protecting said heating element, and means for causing a partal Vacuum inside said tube.

8. A Wax extractor eomprising a metal tube having a small end and having an opening extending longitudinally through said tube and said end, an electric heating element Wound on said tube and insulated therefrom, means for supplying electricity to said heating element, a Shell for protecting said heating element, means for causing a partial Vacuum inside said tube, and removable absorbent means in said tube for collecting and retaining the melted Wax drawn into said metal tube by said vacuum.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this lth day of January, 1915.

WILLIAM J. BRIZIUS.

In presence of- FoRD W. HARRIS, FEED A. MANSFIELD.

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