US2110461A - Tooth brush - Google Patents

Description

Al5 portion to the operative position.

'Patented Mir. 8,1938

PATENTijgo-Frics? `:nimm l 'roorninnusnmsnen s. embark,- Mcvmmm.' Y. Anuncian .Mu lz, i937.. serum. 142,103 lretira- 1an My inventan einem brushes yrma. mmeparticularly to la. tooth brush which can'be collapsed into-i138 handle.v s

'L' One of theobjectsv of :ny-invention is lto pro- 5 vide a tooth brush or other'appliance having a handle ywhich acts asa receptacle for the-bristle portionlwhenthe same is not 4in use and wherein the vsaid bristle portion 4is automaticallypre-- sented' in the operative position.

l' vAnother object ofjmy invention. is to provide .f sucha toothbrush wherein A-tlie handle which "20 intended to .explain-the same without limiting itin any manner.

Fig. 1 is a'sideelevation of my tooth brushl .partly insection.

Fig.. 2 is a similar viewshowing the tooth brush 25 collapsed. I v

Fig. .3 is a section on the line 33 of- Fig. 2.'

- Fig. 4` is a top view'-showing how` the bristle portion is released. v

' Fig. 5'is a section onv theline 5-5 of Fig. 1. 3o Fig. 6 is a perspective viewof my tooth brush in the operative position.

AIn'thev drawing, I designates the handle of the tooth brush which is also the receptacle for the bristle portion 2, "having the bristles I0 y 35 mounted therein. 'I 'he handle I has a pin 3 secured to its walls and pivotally mounted on the shank oi the pin 3 Aby means of the yoke 4 is the bristle portion 2. However, any hinge joint can be utilized to maintain these parts in ,40 pivotal relation.

Within the recess of said yoke 4, I provide a.'

spring 5 one of whose ends 6, bears against the' bristle yportion 2 and whose other end 1, bears against the handle I. -It is obvious therefore 45 that 'the spring 5 will normally maintain the toothbrush in the extended position. In order that this relation of the parts be not disturbed during the use of the tooth brush, the recep- I 'tacle I is formed with projections Il adapted s 50 `to engage the recesses I3 of the bristle portion when 'in the extended position. Since the 'parts are made of a resilient material, the projections I4 will engage the recesses I3 in a snap-ilt.-

'I'he bristle portion 2 is'provided with agroove 5| 3 at its outer end and this is adapted to engage a latch 8, formed on. the end of the receptacle I. When the bristle portion 2 is collapsed into the receptacle I, the iatch'l will snap into the groove 3 and retain it againstthe. action of the spring .5.' The latch l is I neferablyv formed integral 15 with the ,receptacle` I and is in the form of a projection thereon.4

As kheretofore .explained the assemblage is madeof a resiliet'material and the walls II of the receptacle I beingv of narrow width are easily compressible. Referring particularly to 4Fig.` 4, this shows-the tooth brush in the col- :lapsed position, and the lingers E compressing the walls Il of the receptacle I.v This action elongates the receptacle I and the latch 8 leaves 15 the groove 3 releasing the bristle portion 2 which 4is then permitted to swing back to the dotted line position shown, impelled by the unhampered 'action of the spring i.

I have shown a preferred embodiment of my invention but it is obvious that numerous changes .can be made without vdeparting from its spirit.l` For example, whileI` have'illustrated my inventionas applied to a tooth brush, many other vcommon articles may be formed so as to utilize its principles; Also, I 'have shownthe latch 3 in the receptacle engaging the groove 3 in the bristle portion but it is obvious lthat their positions might be reversed and it is understood that my -invention covers this departure. This variation is likewise applicable to projections Il and the recesses I3.

1. A collapsible tooth brush comprising a handle having resilient walls and having a recess formed thereby, said walls being adapted to distort'the shape `of VYsaid recess when. pressure is exerted on said walls, a bristle portion pivotally connected to said handle and adapted to t into said recess when the tooth brush is collapsed. 40

spring means operating on said handle and bristle portion to maintain them in the extended posi- .tion and latch means comprising complementary members on said handle and said bristle portion handle having resilient sidewalls and an. end

wall which are connected to each other by in- 'tegrall rounded edges, whereby pressure exerted on said'side walls will cause said end wall lto move outwardly, a bristle portion which isy piv- 9,110,461 l l l vthe notion of laid spring ineens end which dieeneeee when pressure-le 'exerted on seid sidey v welll, eeid pressure cousine` the outwed movement o! cold end well which conica one of nid latch members. t

. ELHANAN B. CHIBNIK.

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