US2101737A - Hair trimmer - Google Patents

Description

D.7,1937.` LAGESLR 2,101,737'`- HAIR TRIMMER Filed June 14, 1937 Patented Dec. 7, 1937l PATENToFFIcE o nnm'rmMMn Y Y `Lemma A. Gener, Aurox-afm. implication,me 14, 1937, semina. `148,055 i i i o ,i o x10 claims. "I'hisflnventionrelates to alhair more particularly to suchy device having la pick-up roller that. will positively pick up the `hairspreierably on .the head of. a human being, and present such, hairs irran outwardly standing position.

` `To"f`atte`mpt to trim the hairon the vhead of a humanbeing withfan ordinary-razor would he disastrous for the reason that., the l razor could not be properly guidedandthe hairswould not r bepicked up and `presnited to `tlfiefnlade at right angles thereto; hence such trimming attempt wouldresultin cutting unsightly urrows and"` other irregularitiesin the hainethus destroying its good appearance.

In the prese t inventionfllhave overcome these ndiiiiculties byprevidingan attaclunent or additional structure that may be readily, attached to or built into an ordinary razor holder to provide a pick-up rollerrotatabie infront of the cutting edgeofthe razor .blade in suchdirection andso e `and cause`then1 to stand atY substantially right angles to. thecuttingedge of the blade, so that l es theuhair trimmer is moved over thehair of the` "headfit `will positively and effectively trim the same smoothlvto give a very uniform and pleasy ing appearance` fto'the hair alter being trimmed, e and free from r'oughplaces or other'unsightly fappearance.

" means for` positively ,rotating the pick-up roller at the desired speed, either by means of a power roller; receiving itsrotaton from rolling contact` e on the hair or by means oi' `a suitable motor, such e 33 as aslpring, motor, electric motor, or `the like.

When a` motor is` used the power roller will-be v omitted, but intheabsence of a motor the power roller o' will' be provided tofiurnlsh the power for. driving the` pick-up roller by rolling contact with. 40

the hair oi"` the head,K as reierred'toabovej vide ya vhair trimmer that will" trim f the hair evenly and smoothly.

e A further object is, to providea novel pick-up roller for "picking up the hairs of `the'head and present 'them at" substantially right angles to the cutting edge-of. the blade. o o V A still further object is to" provide novel means forfpositively rotating said pick-up roller at the desired speed.

`Another object is advance ofthe cutting edge ofthe blade that o the `cutting edge willfbe presented to the hair at a` convenient and efiective angle.

A further object is to provide such means that trimmer and constructed fas to pick-" upY the l hairs .of the head 9 In thelpresentfinvention I have also-provided e vAmong the objects of my -invention` is-to pro-` to t so arrange parts (cl. ao-ei) o 1 o t they may be readily" incorporated into a` safety razor oi any ofthe well known types -in ysuch manner as to sell the Vvcompleted device ata reasonable price. f

A still further object and eiiective device of theclass described herein, such that a man may trim his own hair without the assistance of anyone else, and either 'with 'or 'without the use of mirrors as desired.

`Other objects, advantages and capabilities will latermore fully appear.` i 1 is to provide 'aconvenient' `My invention further resides inthe combination, construction and arrangement of parts illus-` trated in the accompanying drawing, and while I have shown` therein preferred embodimentsI wish it understood `that'the same are susceptible of modification and change without from the spirit of myrinvention.

"In the drawing:-

Y o Fig. l is atop plan view of a safety razor showving my 'invention applied thereto,

inrig'gi.. fis avertlcaltransverse section taken on the line 3`-3 f Fig. 1.` o

Fig. 4 is af perspective detail view of the at-` lacildiment prior to securing the same to the razor o er.

`Fig.2 is a ,sideelevation vofthe device shown Fig. 5`is"a vertical transverse sectional `View of a modiiled `form of my inventiom,

`l'teferring more 4 in ,detailto lthe drawing.- vmy invention is vshown as applied to a safety razor of the Gillette type,vhaving`the usualfholder I, `clamping plate 2 and handle 3, the clampingplate 2 being secured tothe holder I bythe screw stud 4 screwing into a correspondingly threaded opening in theupper end of the handle, so that by rotation of the handle the blade 5 will be clampedV inthe usual manner between the clamping `plate and the holder. While I have for illustrative purposes shown this particular type of Gillette razor, I wish itfunderstood that my invention is departing applicable to 'other forms of Gillette'razors as well as other typesof razors, it being obvious` that o when applied to diierent types o r forms of razors the i attachingv parts will be varied to suit `the particular typeof razor to` whichmy invention is applied. .o 1 ,H

For `the purpose `of providing a suitable mountingY for my hair trimming attachmentf I have prof vided a `pair of endplates and?! eachprovided with lugs '8 bentat the desirableangle thereto `(inv the present case this angleV being 90),and each` of these` lugs being formed with:` openings 9 to` receive the attaching screws I0, which are preferably provided with slotted heads to receive a screw driver or the like. and be screwed into correspondingly threaded openings II in the holder (see Fig. 3), so that the plates 6 and 1 will occupy a position substantially at right angles to the body of the holderand project downwardly therefrom. In applying my device to a safety razor I permit the rear guard teeth I2 to remain on the razor but remove the guard teeth from the front edge, said front edge being preferably shaped as shown at I3 in Fig. 3, this being so `that there will be no guard teeth on the front edge of the razor to interfere with my pick-up roller.

Plate 6 is formed adjacent its forward edge with suitably spaced round openings or apertures I4 and I5, while plate 1 is likewise formed with spaced similar apertures I6 and I1, these apertures receiving the shaft or reduced cylindrical ends of the pick-up roller I8 and the power roller I9, the former being rotatably mounted in the apertures I4 and I6 and the latter being rotatably mounted in apertures I5 and I1. Fixed upon one end of the shaft or reduced cylindrical end 20 of power roller I 9 is a gear 2|, and likewise fixed upon the shaft or reduced cylindrical end 22 of the pick-up roller I8 is a small gear 23. Plate 6 is also provided with a cylindrical aperture 24 properly spaced to receive a stub shaft 25, upon which is mounted a gear wheel 26 properly meshing with gears 2| and 23, so as to transmit rotation from power gear 2I to gear 23 for driving the pick-up roller I8. Gear 26 may be either xed to stub shaft 25 and the latter rotatablein aperture 24, or stub shaft 25 may be fixed inaperture 24 and gear 26 rotatable on the stub shaft, as desired. y n

Referring to Fig. 3, the line 21 represents the general line of travel of the device over the hair, it being understood that when both the power roller I 9 and the adjacent bearing portion of the clamping plate 2 touch the head they are in position for a close trim or fine cut, and when a coarser cut or trim is desired the device will rock about the power roller I9 as a fulcrurn, with the adjacent portion of the clamping plate 2 a greater or less distance away fromthe head, thus giving a wide range of adjustability to the close or coarse cut.

It will be noted that the power roller I9 is provided with a suitable number of spaced discs 28, each being formed around its circumference with a sumcient number of notches or indentations to provide projecting blunt-ended teeth 29, which will sink in between the hairs of the head and iny general follow the scalp, the teeth 29 giving added traction because of their more readily taking hold of the scalp. vIt is also to be noted that the pick-up roller I8 is provided throughout its length with teeth 30 so arranged' as to pick up the individu..l hairs of the head as the device is moved over the head, due tothe rotation of the pick-up roller such that the individual hairs will be picked up and presented at approximately right angles to the cutting edge 3I of the blade 5.

I have shown an effective arrangement of teeth 30 on pick-up roller I8 in the drawing. which consists i'n effect of providing the pickup roller with a circumferential helical groove 32, which may be single, double, triple, or other pitch, as desired, which grooves result in the formation o f correspondingly helically arranged ridges 33 which are in turn provided with a plurality of suitably spaced longitudinally formed grooves 34, which results in the formation of thepick-up teeth 30 for picking up the individual hairs as described above. This results in the pick-up teeth 30 being progressively staggered around the circumference of the pick-up roller so that as the latter rotates each succeeding pick-up tooth or teeth will be somewhat spaced longitudinally of the pick-up roller with relation to the next preceding tooth or teeth. This means that when the pick-up roller is rotated, as it will be by being driven through the gears 2|, 26 and 23, from the power roller I9, the individual hairs of the head being trimmed ,will be picked up and presented at approximately right angles to the plane of the cutting edge of the blade.

In the operation of my device it will from the foregoing be understood that when trimming the hair on the head preferably of a human being, the power roller I9 will be pressed against the head and moved downwardly over the hair with sufficient pressure to cause positive rotation of the power roller in the direction of the arrow in Fig. 3, which through the medium ofgear wheels 2|, 26 and 23 will impart rotation to the pick-up roller I8 in the direction of the arrow in Fig. 3, and in turn cause the pick-up teeth 30 to pick up the individual hairs 35 and carry them individually, as shown in Fig. 3, toward the cutting edge of the blade and present them thereto at substantially right angles which, as is obvious, is the most advantageous position of ther hairs with relation to the cutting blade to facilitate ease of cutting. This ease and efllcient cutting will take place because of the forward movement of the cutting edge of the blade over the head, which forward movement, as explained above, results in the rotation of the power roller and the pick-up roller. As shown in the drawing, Athe driving gearsfwill be so proportioned and arranged as to drive the pick-up roller at a higher rate of speed of rotation than that of the power roller, this increase in speed being capable of `any desired ratiol with respect to the rotation of the power roller as desired, depending upon the relative size of the gears.

While I have shown in the drawing for illustrative purposes a particular arrangement of the pick-up teeth of the pick-up roller which I have found to be highly satisfactory, I wish it understood that my invention comprehends'other possible arrangement or arrangements of such pickup teeth capable of producing the effective picking up of the individual hairs and presenting them substantially at right angles to the cutting edge of the blade.

Other means for rotating the pick-up roller I8 may also be employed, such, for example. as power means illustrated in the modification of Fig. 5. In this form I have shown for illustrative purposes a motor casing 36, which may house any desired form of motor, such as an electric motor, spring motor, or the like, mounted upon shaft 31 and driving gear 38, which meshes with gear 23 for directly or otherwise driving the pickup roller I8. In this form the power roller I9 is omitted and in order to provide a suitable fulcrum in the advance portion of the device I have provided spring fingers 39, suitably spaced in any desired number along and fastened to a bar I0 secured at its ends in side plates 6 and 1, which at their forward ends may be somewhat shorter in length because of the omission of the power roller I9. It will be understood that when an electric motor is used in casing 36, suitable electrical connections will be provided thereto for connection with the ordinary yelectric socket In the home. With this arrangement last described the pick-up roller I8 may be rotated at a greater or less speed as desired.

Having now described my invention,

I claim:-

1. In a hair trimmer, a cutting blade, holding means 'for said blade, and a pair of rollers in advance of the cutting edge of said blade, one of' said rollers contacting the surface to be trimmed and driving the other roller.

2. In a hair trimmer for trimming the hair on a human head, a cutting blade, a holder for said blade, a traction roller in advance of the cutting edge of said blade and adapted to be rotated roller between said traction roller and said cutting edge, and means for rotating said pick-up roller from said traction roller but at a greater speed.

4. In a hair 'trimmer for trimming the hair on a human head, a cutting blade, a holder for said blade, a traction roller in advanceof the cutting edge of said blade and adapted to be rotated by rolling contact with the head, and a pick-up roller between said traction roller and said cutting edge, and means for rotating said pick-up roller from said traction roller but .at a greater speed, the direction of rotation of said pick-up roller being such as to carry its upper portion toward said cutting edge.

5. In a hair trimmer for trimming the hair.

on a human head, a blade, a holder for said blade, a pick-up roller adjacent the cutting edge of said blade and having progressively offset teeth around its circumference, and a power roller said blade, a framework attached to said holder,

a pair of rollers rotatably mounted in said framework in advance of the cutting edge of said blade, one of said rollers being mountedahead of the other one and said other roller being mounted closely adjacent the` cutting edge of'said blade, the forward roller having traction means for causing its rotation as it is rolled over the head, l and means for driving the other roller from said forward roller.

f7, In a hair trimmer for trimming the hair on a human head, a cutting blade, a4 holder for said blade, a framework attached to said holder, a pair of rollers rotatably mounted in said framework in advance of the cutting edge of said blade, one of said rollers being mounted ahead of the other I-one and said other roller being mounted vclosely adjacent the cutting edge'of said blade,

the forward roller having traction means for causing its rotation as it is rolled over the head, and means for driving the other roller from said forward roller, said' other roller being provided with means for picking up the hairs and presenting ythem to the cutting edge of the blade.

8. In a hair trimmer for trimming the hair on a human head, a cutting blade, a holder for said blade, a framework attached to said holder, a pair of rollers rotatably mounted in said framework in advance of the cutting edge of saidblade, one of said rollers being mounted ahead of the other one and said other roller being mounted closely adjacent the cutting edge of said blade, the forward roller having traction means for causing its rotation as it is rolled over the head,

and means for driving the other roller from said forward roller, said other roller being provided with means for picking up the hairs and presenting them to the cutting edge of the blade,

the means on said other roller for picking up the hair comprising projections progressively offset circumferentially of the roller.

9. In a hair trimmer for trimming the hair on a human head, a cutting blade, a holder for said blade, a pair of depending plates on said holder, a pair of rollers rotatably mounted in said plates, one of said rollers forming a pick-up roller adjacent the cutting edge of the blade, and the other roller being in advance of said pick-up roller and being rotated by rolling contact with the head, means for driving the ypick-up roller from the forward roller, the forward roller having circumferentially arranged projections to increase the rolling contact with the head, the

`pick-up roller having teeth progressively circumferentially offset from each other to pick up the f hairs and present them to the cutting edge of said blade, the speed of rotation of the pick-up roller being greater than that of the forward roller.

l0. In a hair trimmer for trimming the hair on a human head, a cutting blade, a holder for said blade, a pair of depending plates on said holder, a pair of rollers rotatably. mounted in said plates, one of said rollers forming a pick-up roller adjacent the cutting edge of the blade, and the other roller being in advance of said pick-up roller and being rotated by rolling contact with the head, means for driving the pick-up roller from the forwardroller, the forward roller l having circumferentially arranged projections to increase the rolling contact with the head, the

pick-up roller having teeth progressively circumferentially offset from each other to pick up the hairs and present them to the cutting edge of said blade, the speed of rotation of the pick-up roller being greater than that of the forward roller, the direction of movement of the upper portion of said pick-up roller being toward the cutting edge of the blade.

LEONARD A. GESLER.

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