US1848868A - churchill - Google Patents

Description

March 8, 1932. U C 1,848,868

BRUSH Filed June 27, 1951 IN V EN TOR.

BY v

ATTORNEY Paterited Mar. 8, 1932 ttatesz'm tow-i cleanin fit 016 the type prvi ci a with a co'nical skirt of bristles flaring tdwttr d the handle end brush and-warding the handle.

mg-typeof brush is particula ly useful employed far "cleaning be'tWeeI-i --c "verhztiig ing flanges of such a b WL-- r r The efiiciency of this shirt depends largely tvhichji-t possesses. 'Phe -present i rit eii'tion' den-1s with'the problem- "of securing Wider'fiare 1n this type 'Qfbriish than his hitherto beeIipOssi-bie and has for its 0b je'bt'te proviie a unvei -construction whereby a? flare may-be secured; i 7

' Another :dbj-ectyo'f the invention is to pro- V'ide 2t, there di'ir'iibie brushfl Hitherto the flare been :pTOKfiiCGd by Wirjrding the skirt bristles upon-the retiiiced-end 0$ the'handle.

sti'ckfaiid allowing the shoiiiclferitormed' be? twentheharr'd'l-emid"satidrethiced end to bear construction wherein there can be'no circum-i' sh'f shoi'il derailws'the bristles to su ar eimi enmity 'of the stick to some extent,

ma the present invention trims td pro id "af fiefltiathslipoithe biistles,-

I iWifi these Jan-dother objects iii View; my

p npv o y iiniowing the tip" bristles ta; lie-brought together to' a closed-point 1 ifi el antng water I ci 'ose't howls andthe 'skir't" isftsj ii the i benefit-06011 ar-r raaigement andcomblnakt -on' of the various;

, parts of my devibe, whereby the objects c bnis axial, sectioiial view through The tip bristles-are I ence character 12, and aire" ben t back ripen themselves to provide the; second layer of bristles-13. w in eonstriititin'giflhe I I cedure 6f inserting the stick to a r'dt'ttatble vise is followed; the binding-wire 1 4 being,

semwed asiat ltto the tip 11 of the stiekk 116 tipbr-istiesaire theh laid beneath the ltini a u'sus'ti naf n 'eflthe "second layer-1 3 projectifig 'reztrw rd'ly ar-(mud the hajni le" While the first binding 16 is Wrapped. F

the tsti al pm intimated the rtr v r Theseeoi'i'd layer 13'is t hefi laid back upioh tip 12'xyer 12inthe pqsition shown i n'Fi-gare "2, and secured by the second binding 17" The-d ottedilines indicttehow the Wire is car V ried from the firsttothe seconc'i'bindingk; I

- As the second binding is wv i'tippe'l; 'the' sed- 70nd? layer 1i3 tvi11; gradually ush the tip bristles l2 tog thert0 rovtc1e mlesed point. t

r The intermediate "bristles are {then Iaii'd 0%,

providing 2 third Layer 1 8f wh-ih i s map ed;

by. the binding 195vthe' rea rward'l protruding portivns o f the bristles being thence l a icibttck t. pon them elves to form the ieurth" layer 20 which is th'en'e W rtp' ped' with? the Y The intermediate bristles are e f stiffioi ent lengthls'o that the bindiiig '19 1rrray be 'positioned :at :51 substantial distance re'a rwardiy' of-theflbia ding 21,, thereby producifig the bristles fihencisei-ves- .ttshoulder 22 which serves to create the flare the skirt bristles.-

1* By laying on thewi-ndinglS) first the inter:

mediatte bristles are securely, held 5 and the Winding 21,;positioned forwardly -0i the Winding 1 9, p l1s'in'the bristles forwardly .Qi"

the winding .sg that thendiz meter pi the brush zit this stage effcgristrlietion and ta-Itith'e r region ofthe eo' iisiiertb ly les'js t'hanit'hefli-ametrof the shoulder 22,1

The, u n -T t he, s o ldem r s s. i 5 turztliy from the iesiii'endy. j of I, the ties tending to: assume .t w a ne rlymi fiftfia as p'ossibl'e in the regiii where" they are bent back upon themselves. The winding19 also aids in producing the bulge, and reinforcesv 1 intermediate the windings 21 and 19 or forwardly of the shoulder 22.

The winding 23 is drawn tightly around the skirt bristles, pulling the intermediate regions thereof inwardly, and causing the skirt portions 24. thereof to flare sharply outwardly against theshoulder 22. The forward extremities of the skirt bristles 24 form the fifth layer 25 of the forward portion of the brush. r a

The skirt bristles 24 are of bassine material,

While the tip bristles 12 and intermediate layer 18 are of the more pliable vpalmetto material. Thus the head of the brush is encased with a layer 25 of the stiffer and more wear resistinggbristles, and the skirt 24. is constructed of the heavierbristleswhich are required for this purpose, while those layers which must be bent back upon themselves are constructed of the more pliable bristles which can be so worked. I I

I Inasmuch as the shoulder 22 is formed of bristles instead of the smooth surface of'the handle, the skirt bristles 24 will vbe located against the corrugation-like surface of the shoulder and 'will be tightly held against anyv possible twisting 'or circumferential movement. In other words, the bristles Wlll be held against twisting movement not only by the wrapping 23 but also by frictional engagement with the shoulder 22.

The most important advantage ofthe invention however, resides in the greater flare which it is possible to secure in the skirt 24. In that type of brush wherein the flare is produced in the shoulder formed in the stick itself, it is possible for-the skirtto close considerably toward the handle, whereas in a brush constructed according to my invention, the skirt will stand out rigidly at a greater angle to the handle than has hitherto been attained. i

It is possible that a greater angle could be secured in the shoulder type construction by employing a handle of larger diameter than is at present used in this type of brush. However, this would involve considerably more expense and would make the brush Another advantage residing in the present brush is the much greater frictional engagement between the skirt bristles and the collared portion of the brush. It maybe noted that the skirt bristles are in constant contact withthe bristles of the intermediate layer from the winding 21 to the highest portion ofthe shoulder 22. V 1

This feature combined with'the rough surface of the shoulder 22, provides a much more sturdy and durable construction.

Another advantage of the invention resides in the fact that as far as producing the flare is concerned, it is unnecessary to employ a handle with a reduced tip. The flare is produced independently of the tip and the latter has no bearing on the flare.

A further advantage of the invention resides in the fact that it is easier to construct this brush than the prior form of brush. It seems that the skirt bristles may bemore easily'held in engagement with the intermediate bristles than against the smooth, slippery surface of the shouldered tip, and the trim- Iningof the skirt maybe done on an ordinary rotary cutter trimming machine where the wider flare of my invention is secured, whereas, formerly, it was always necessary to trim the skirt by hand.

Some changes may be made in the construction and arrangement of the parts ofmy in-f vention without departing from the realspirit and purpose of'my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents which may bereasonablyv included within their scope. 1 8

I claim as my invention 1. In a brush, ahandle stick, a set of bristles bent back upon themselves to provide two layers of bristles joined by an annular protruding collar portion formed by the bends in said bristles, a binding wrapped around said bristles between the layers thereof within said collar, a binding encircling both layers between said collar and the head end of the stick, an outer layer of bristles encircling.

said previously mentioned bristles, and a binding'encircling said outer layer just between said collar and the head endof the stick, and drawing the intermediate regions of. said outer bristles into the hollow between the collar and thehead end of the stick, said outer layer projecting rearwardly and being held in flared position bysaid collar to form askirt. j j V 2. In a brush, a handle stick, a: set of tip bristles secured thereto, aset of intermediate bristles secured thereto and encircling the tip bristles, said intermediate bristles being bent back upon themselves to form. an annularly protruding collar, an outer. layer of bristles, a winding securing. said outer layer against the intermediate layer ust forwardly of said collar, said outer layer projecting rearwardly and being flared outwardly by said collar to form a skirt. j l

3. In a brush,a handle stick, a layer of bristles secured thereto and bent upon itself to form an annularly protruding collar, an outer layer of bristles and a binding securing said outer layer upon the under layer, just forwardly of said collar, saidouter layer of bristles projecting V rearwardly and being ilzaasgsed fllitred outwardly by said collar to form a s irt. V V i 4; In a brush, a handle stick, tip bristles secured thereto; an intermediate layer of bristles bent back upon themselves to form an annularly protruding collar, a bindingene circling the inner layer onlyof saidintermediate bristles and reinforcing said collar from Within, a binding encircling both of saidlaym ers forwardly of the collar, an outer layer of bristles, and a binding securing said outer v layer against said intermediate bristles just forwardly of the collarythe outer layer ex-'' tending rearwardly and'being flared outwardly by said collar to form a skirt.

r 15 Signed'this 1st day of June, 1931,- atSiouX City, Iowa.

THADDEUS R. CHURCHILL.

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