US1991047A - Orthodontia band bracket - Google Patents

Description

" Feb. 12, 1935. l c. E: BOYD Erm.

ORTHODONTIA BAND BRACKET Filed Jan. 17, 1953 M 5w. ef# c i j mjy fwy .a 5 @w Patented Feb. 12, `19354 yflour( inventionrelates generally to orthodonf tia appliancesgandmore particularlytol a` Vde--V vice;fon'automatically securing arch b'ars to orthodontiabrackets.` Y A "51 'I 'he principal objectsl of` our invention are,

. bandlandfurther,ftprovidean'automatic arch to generallyimprove upon and simplify the construction'fof 'arch' bar securing devices, to providem'arch" bar'- attaching meansithat is entirely automatic infitlslactionbf engaging `and holdingftlie'arch bar in 'proper operative relation upon thebracke'tthat islcarried by the toothed' barattaclfiing `"device that entirely eliminates all I separate or `extraneous attaching or `secur` "`"Ilurther` objects of our `inventionare, `to yprovide` arch barT securing'means that Willefe'ct a materialsaving ofI time and labor yon the `par-tof theorthodontist in attaching arch bars tothe tooth`y bandfbrackets and Vfurtherito prop Vide a)VA relatively Sin'lplf`.a. I1`dl convenient 'attaching means that AWill bev'veiective Y materially decreasing lthe f time" required for the` treatment of fthe teeth to vvliichiftheorthodontic"appli-` ance is applied.h ya A s 2A further bbject of' our`invention`is, to provideian attachingdeviceof the character Ire-H Ierredfto; that will ".ofier no discomfort `to Afthe' patient land-Whichiwill nottend touirrita'te-y or i cut the tissue `of the flesh that'fmakes contact Withthe bracket, arch" bar and fthe securing means therefor. f 1 i' A 'further object Aof our invention is, to providefanlatorriaticarch bar.attaching device that" will' enable' the archr "bar f to i beV easily `and quickly i placed :1in position Within or removed from the arcli'bar" receiving notch inthe toothI band bracket and which Willfeiectually retain thlarcl'i? bary in proper position upon the brackf-l etf and readily permit the'desired` longitudinal movement of the arch bar:relativetothe'brack-t` et, as is required during adjustment of'thearcln bar` in the? treatment rendered t'oz the teeth."

With the foregoing and; otherV objects" in view` oui'finvention'consists in certain` novel features i of:constructionandv 'arrangements of parts that Will tbe? hereinafter more fully describedand claimedi` and"` illustratedA in drawingin which: i y Fig. :21 iswa front elevational Yview. of a portionmof` a tooth `band with 'abracket applied thereto and `With our improved arch bar attachingflryneansiin position on the 'sides `of* saidi brackets."` Y .i 'f1 y i 1,591,047'l orvrmmjN'iIAv BAND BRACKET* Application January 17, 1933, serial toi'inie (o1. slag-14) {kl Vbar attaching means.` y

thek i accompanying" Fig. 2 a' vertical sectwionjtakenofnjth l1 242 andI showingthe bracket and archbaif attac'liigrneansin elevation; l l

' Fig.'3 is anelevat' `nal v'ievv similart Figa, 1 and showing a moded" formi oi fthe Fig. 5; is `an elevational vievvg similar/tto Figs! i 11 and 3 andshovving' a further lmodified forni.`

rch: i

ofthe `automatic archbar attaching device''f 2" Fig` 6 is a vertical section taken ontheifline Referring by numerals toth'e accompanying drawing and particularly tofthe construction toothf' band to which is securd'fin theusual' manner, an arch barreceiving bracket llgfthat' isV provided in "its front portion withi'a1horizontally disposed n notch It is' tli'eusual practice to'is'e'cure theI arch bar to the bracket byimeans of "fligaturesor:` the y rlike and in iorder'td's'ecure. the `latter to ilthel` bracket 11, `the'ends of` the'ilatter1 .are Vpro#V vided with hooks J"or notches for i the reception of said 'ligaturesg but 'in""ourl improvedconstruce. tion, both `ends of the bracket"areiroundedlror beveledlsoin as to fferno discomfort'trfthevskin and `tissuesA thatfcome `in'` contactevi/'Sith they bracket.:` A i y f The arch bar securing means contemplated by our invention, 1icomprises'la pair of/subStan-j y tially U-shaped i members with fonez `memberA ar-. i

ranged on each side' face ofv the .bracketfl 1; 1 with the parallel arms @of said' :1 members#V disposed aboveand belowfthefnot'ch 12.2` These' members Vdesignated by the numeral t14;carefformed'zxef resilient `Wire andthe forward endwofythe" lower horizontal'` arm of each "member, Vist permanently secured to i thev side"` vface1 of rthebracketiimme:

diatelyibelow the arch ban'notch'` or recess 12;

The lower portion of this hook normally projects below the upper face of the notch 12, as illustrated in Fig. 2, so that when the arch bar 13 is positioned in the notch, said hook overlies the upper front face of said arch bar.

In Fig. 2 the arch bar 13 is shown in positionjust before being moved into the notchr 12 and during such movement the rounded or` beveled `face 17 ofhook 16 will be engaged so as to flex the member 14 upwardly andrear- .wardly a sufficient distance for the bar to pass the lower end of the hook and occupy its scat in notch 12.

To restrain the members 14 against undue Figs. 3 and 4, the arch bar retaining members 19 are substantially of inverted L-shape and the lower ends of the vertical legs of said members are permanently secured, preferably by means of solder 20, to the side faces of bracket 11 adjacent to their lower ends.

v'I'he horizontal arms of these members occupy positions at the sides of the bracket just above the arch bar receiving notch 12 and the forward ends of these free arms terminate in depending `hooks 21 that extend downwardly a short distance below the upper face of the notch or slot 12.

Stop lugs 22 are formed on the side faces of bracket 11 to the Arear ofthe notch`12 for limiting the forward movement of the arch barretaining members 19. p v

In this form of device, the archbar, when moved toward andv into notch 12,engages the rounded or beveledv front faces of hooks 21,

thereby flexingv the resilient members 19 up-` wardly -Y and rearwardly until the arch bar passes the hooks yand the engagement of the latter with the upper front face of the archbar effectually secures the same to the bracket.` f

In the modified construction illustrated in Figs. 5 and 6, the retaining members 23 of resilient wire are substantially L-shape with the upper vends of their vertical legs secured by f solder orotherwise tothe upper portions of the side faces ofl the bracket 11. r

`The horizontal arms of the brackets lie :adjae cent to the 'side faces of the bracketsjust above the arch bar receiving notch 12 and the free ends of said horizontal arms terminate in depending hooks 24 that project a short distance belowtheupper face of notch 12.`

Suitably located 'stop lugs 25 projectfrom the side faces of bracket 1l above the horizontal arms lof the members 23 for limiting their upwardflexingl movements. A t

In the constructionsillustrated in Figs. l, 2, 3 and 4, the rearward flexing movement of the retaining ,membersf14, 19 and'23while the arch bar is being positioned in the'arch bar receiving notch, is limited by the tooth vband to which the bracket is secured.

In the modified .construction illustrated 'i in Fig. 7,- downwardly andy outwardly presented hooks 27 are pivotally mounted at 28 to the sides of the brackets 29 above the arch .bar 4receiving notch 30v and the lower ends of said hooks extend a Ashort distance below the upper` edge of the arch bar receiving notch soV as. to overlie the arch bar 31 when the lsameis properlypositioned withinthe notch..` I

Projecting upwardly and rearwardly from the hooks 27, beyond their pivot points, are resilient fingers 32, the upper ends of which bear against the outer face of the tooth band 33. v

When the arch bar 3l is moved into the notch 30, the curved front faces 34 onthe lower ends of the hooks are engaged by the arch bar so as to swing said hooks upwardly, thereby flexing the resilient fingers 32 and when ,the arch bar is properly positioned inthe notch', jthe resiliency of theexed fingers 32 returns the hooks 27 `to their normal positions with their lower ends overlying the upper front face of the arch bar.

When the. arch bar is properly seated in the bracket, it is rmly retained in such position by the hooks on the free ends of the resilient 4 retainingmembers and while in such position,

the arch bar may be shifted longitudinally relative to the bracket as is required for adjustments duringtreatment of thefteeth towhich the orthodontia device is appliedandtheattachment of the4 arch bar to the bracket is effected without the use of ligatures or other extraneous connecting means. l To effect a release of the arch bar'from the brackets provided with the attaching` means, it is only necessary to apply a suitable tool to thel hooks o n the free endsof the retaining members and lift said hooks a sufflcientdistance to per-r device effects a material saving of time'v and,v labor in the application of the arch bar to the bracket and likewise in the removal of said arch bar from the bracket and said device entirely eliminates the use of ligatures and other fasteninggmeans that not only involves` considerable time. and labor in manipulation, but providesa source of discomfortto; the patient byr reasonv spirit of the invention, the scope ofwhich is set forth in the appended claims.

We claim as our invention: v

1. The combination with an orthodontia band bracket, Aprovided with ari arch bar receiving notch, of resilient members permanently secured to the side faces of the bracket and hooks on the free ends of said resilient members,

which hooks normally project beyond the edge of the arch bar receiving notch so as to overlie the front face'of the arch bar that is seatedin saidnotch. v 1.

2. The combination with an orthodontia band bracket having an arch bar receiving notch,fof means permanently secured to the side 'faces of said bracket and` projecting beyond the edge of the arch bar receiving opening in said bracket foroverlying the front face of the arch bar that is seated in said notch. i i

3. The combination with an orthodontiaband bracket provided with. an arch bar receiving notch, of resilient members permanently secured at one end to the side faces of said bracket, the free ends of which members terminat'ein bar receiving notch and the front faces of which hooks are rounded orinclined.

4. The combination with an orthodontia band bracket, provided with an arch bar receiving notch, of` resilient members secured at one end to said bracket, the free ends cf which members terminate in hooks that project beyond the` edge of the arch bar receiving notch, the front 4faces of which hooks are rounded or inclined and means for limiting the movement of said resilient members in one direction.

5. An orthodontia band bracket having an arch bar receiving notch and a resilient member permanently securedto said bracket `and extending beyond the `upper edge of the notch Y therein for retaining an arch barwhen properly seated in the notch in 'said bracket.

. n 3 V6. An orthodontia band bracket having an arch bar receiving notch and a pair of spaced resilient members secured to said bracket, the free ends of `whichV members permanently extend beyond the upperedgeof the notch in said bracket for retaining an arch bar when properlyv n seated Within said notch.

7. An orthodontiaband bracket, having an andthe 'free end of which member normally projects beyond-,onek of the` edges of `the notch

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