US1505333A - Hair clipper - Google Patents

Description

F. L. GRAY mun CLIPPER Filed Sent. 27, 1922 '2 Sheets-Sheet 2 13 1521955 1: ray 5- i9 3 2* Patented Aug. 19, 1924,."

uNirso STATES PA'rsNroFnca."

some L. GRAY, or main, care.

mm current Application med September 21, 1922. Serial in. 0,157.

tion therefor and improved parts for use therein. I

lt'has been quite conventional to provide a cutting bar having teeth uponwhich reciprocates a knife bar having corresponding teeth.- By thus using a stationary member below and a reciprocating bar above,

' the tendency is to move the hair ends with the upper teeth and not positively sever the hair as desired. v e

Many attem ts have been made in the past to meet t 's condition, amen others is the use of a brush attachment s own in my earlier Patent No. 1,404,603, issued J an. 24, 1922 which served its purpose as there indicate It is i now my mtention to simpli my construction and, fully overcome t e difficulty of moving the hair as the cutter teeth advance toward it, and to' do this without. the use of a feeding brush, though the latter may be used with my present improvement if it is desired.

vIt is an object of the present invention to produce an efficient cutter for long, as

' blade, so that the upper or fixed blade willhold the hair ends in well as for short hair, and to feed the hair evenly and uniformly to the cutting teeth.'

It is a further object to provide a comb base late and two blades in my cutter, and or thisv reason .I- will place the -sta+ tionary blade above with the reciprocating cutter blade below or under the stationary position whilethe lower teeth travel in their course. 1

It is a further objectto also rovide a spring member to hold the mova le blade against the upper blade.

The device is adapted for either manual or power actuation and can be used-with the relative arrangements ofparts here disclosed or by some obvious changes without losing the advantages of the mounting for the movable blade here shown. Finally, it is an especial obiect of my inaped slot for :tion of the base p the movin blade to-receive the toe of the actuating ever to cause the said blade to hug the wall against which it moves and thereb hold the blade in strict alinement. Wit these and other objects in view, my

invention resides in the novel featuresand combinationof parts hereinafter more particularly described and pointed out in the claims.

In the drawingsi Figure 1 is a plan view of the clipper; Figure 2 is a view in vertical section. taken on the line 2-2of Fig. 1;

Figure 3 isan inverted plan view; Figure4 is a side view in elevation; Figure 5-is a top view of the device with the top plate removed; p

.Fi e 6 'is a viewsimilar to Fig. 5, but

showmg the lever and blade in another posi-.

tion of its throw;

Figure 7 1s a plan view of the movable blade Figure. 8 is a side view of the. two cutter blades, and w x Figure 9 is a longitudinal, vertlcal secate and the pressing spring.

Similar referencecharacters are. used to indicate corresponding parts throughout the several views.

A designates fixed blade or cutting comb which is in the'form of a fiat plate, B V

is the base plate upon which the entire devicerests w en in operation, (3 is *the serrated lmife reciprocating between A and B,

D is an actuating lever of the first class for operatingghe knife C, and E is a flat spring situated tween parts B and D forexertan upward pressure against, the knife C.

e comb element A has a Hat upper surface and hollowed out cavityl on its lower face so that the surface against which the blade C will workis reduced as much as possible. Accordingly, the upper surface of movable blade C contacts a forward portion of A and: a thin ed 26 as shown Figs.'2 and 4. .The' part has two perforations for receiving screw elements 9 near its edge, the screws registering with the a ertures 21 of thebase plate B for holding tlib plates in rigid but detachable engagement.

Near the center of the late is another aperture'for receiving t erein a stem 3 having an outside manual operating fiat device t and the inner'end of the stem being externally threaded for a purpose later explained.

At a point at the rear of the stem 3, is

another aperture in the plate A through which is inserted the screw member 5.which is provided withthe inner reduced end 11 which is threaded and designed toeng'age a threaded socket in a raised neck part 7 integral with the base plate B. The midpart between th upper end of the stem and said threaded part 11 serves for the flat shape and are bent upwardly in parallel relation to each other just to the rear of the pivot element 5. The rear end of the bar D may be transversely operated, either manual orpower means to swin the blade C transversely of the axis 0 the clipper, reaching the extreme positions of the blade shown in the two views 5 and 6 of the drawings.

Between the parts A and B is' nounted the bar D for oscillation in a horizontal plane or some plane parallel to the plates A and B. Midway the length of said bar is an aperture for receiving therein the pin 5, the said aperture being thickened to form a strengthened-neck 8 for oscillation about the pivot 5. The bar has also an elliptical slot 24 just forward of said pivot, for permitting transverse movement of the bar about the stem 3, as before explained.

The base plate B has longitudinal parallel fins 12 on its lower surface, as shown in Figs. 4 and 9, in particular. The rearward portion of the plate B, designated 10, is

curved upwardly as shown at Figs. 2, 4 and 9. In a hollowed out portion of the said plate B, is mounted a longitudinallyarranged spring plate E having a forward end 16 normally exerting an u ward thrust against the lower surface of G to press the same against the lower surface of, the projecting edges of the late A. Said spring is fixed to the plate a little to the rear of the pivot end 11, and is cut out to form yoke extensions encircling the neck 7 These ends have openings 25 through which screws 6,project and are secured to the base plate, as before explained. v

A mid-point of the spring E is formed with a transverse bowed portion 14 which is rectangular in shape and perforated to receive therethrough the screw 3. Below the saidbowed portion, is mounted a nut 13 Y fitted to the threaded portion of the said -"screw. Rotation of the said screw by means of the wing parts 4, raises the nut 13 against the bow 14 and thus adjustably increases out that only the forward end of the spring "contacts the knife C. 1

It is obvious, from what has been explained thus far, that the knife C is mounted between the stationary parts A and B.

These three partsA, C and B have serrations 18, 19 and 20, respectively. The teeth 18 and 19 arecutting teeth, while 20 are merely guiding serrations 20 or forward projections of the plate B which servc to hold the hair fromtransverse movement while the cutters A and C are severing the same, only the knife G being the movable part. This knife C is actuated by the part 2 of the 'lever,D work.ing in the slot 15 which is of special construction which will now be described. I

The slot 15 is somewhat elon ated in shape in the direction of the knife. It is substantially frusto-conical in outline, the forward edge being the lower base line which is strai ht. The upper base or shorter surface ine is somewhat curved inwardly at 23 as seen at Fig. 7 while the oblique sides are designated in said view by numeral 22. This construction has a very important function. "When the said side walls are made perpendicular to the base of the slot, as they have sometimes been made, the extreme throw of the'lever end 2 tends to thrust the knife blade C forward away from the shoulder at the under face of the plate A. W hen* however, these diagonal sides 22 are constructed tobe perpendicular to the length of the lever end or toe 2, the thrust of the lever will have no tendency to shift the blade or knife C forward away from its guide. See Figs. 5 and 6 in which the relative position of the parts 22, 2 and D are shown very clearly in either position of the throw of th knife. The rear side of the slot 15 is convexly curved as shown clearly in Figs. 5 to 7, and there designated by 23. This completes the exercise of this function of holding the knife in close proximity to the guide shoulder 27, since at each extreme thrust the end edge of 2 will be seated in the notch of said curve 23 and tend to prevent forward movement of the blade.

Rsum: The stationary blade A isdetachably secured to the base B by the screw 3, the back strip serving as an extension of the blade A and designated by 28 in the drawings. The reciprocating knife C being being placed in superposition as shown, the

screws 9 will fix the plate A to the plate B, and the pivot screw 5 will secure the forward end of 28 in position, serve as a ivot for the, lever D and-be fixed in the ann us 7.

' 6 fix the yoke ends of t e spring by being secured into the base plate through 'theey'elets 25. The nut 13 is then seated within the bow 14, and the screw 3 fixed in said nut thus tightening the forward end of the spring up against the blade G. The device ma now be grasped by the parts 28 and 10, an thelever moved transversely by any appropriate means. This latter is not a feature of my present invention, so. is not disclosedin detail.

There are many obvious changes that may be made without departing from the 3 int of my invention--w ile the knifeC is ere shown and-described as below the stationary blade A yet the position of the twoblades may evi ently be'reversed without losing the man advantages gained b using the slot and ever structure describe here with much detail. Also, the parts 28 and vA may be made in one piece if it is desired.

It is to be noted that the two parts A and B remain fixed and hold the hairin'position while the knife C works between them. The teeth 18 and 19 only are cuttin teeth, while the pron or pro ections 20 rom the'fins 12 serve t eir purpose though not in cutting contact with the teeth of the said blades.

What I claim as new and desire to secure by Letters Patent is: v

1. In a clip er, a base plate, a cutting comb rigid w1t the base plate, a movable serrated knife between the base and comb,'

and a spring pressing the knife away from the base into cutting contact with the comb.

2. In a clipper, a base plate, a cutting comb ri id with the base plate, a reci rocable serrate knife between the base ate and comb, a spring pressing the kni e-against the comb, means for admsting the pressure of the spring, and a lever for reciprocating the knife.

3. In a clipper, a base plate, a cutting comb ri id with the base plate, a reciprocable serrate knife supported above the said plate and beneath the comb and having a slot therein, an o crating lever-having an end entering the s at and fulcrumed back of the knife, a stationary guide for the rear ed e of the knife, and means for holding the ife against the comb.

4. a clipper, a base plate, a cutting comb r1 1d with the base plate, a reciprocable serrate knife supported above the said plateand beneath the comb and having a slot therein, an operating lever having an end entering the slot and fulcrumed back of the knife, the sides of. the slot divergin away from the fulcrum of the operating ever, a stationary guide for the rear edge of. the knife, and means for holding the knife against the comb.

'fulcrumed in the rear of the '5. In a clipper, a base plate, a cutting comb ri id with the base plate, a reciprocable serrate knife supported above the said plate and beneath the comb and having a slot therein, an operating lever having an end entering the slot and fulcrumed back of the knife, a stationary guide for the rear edge of the knife, the rear edge of the slot being curved to maintain contact between that ed e of the slot andthe end of the lever whi e the knife moves in a straight line, and means for holding the. knife against the comb.

6. Ina clip er atransversel reciprocable serrated km e having an e ongated slot therein, a stationary guide for the back of the knife, and an operating lever fulcrumed in the rear of the knife, the rear edgeof the I slot being curved to maintain contact between that ed e of tween. that edge of the slot and the end of the slot and the end' of the lever while the knife is moved in a from the fulcrum of the operating the lever while the knife is moved in a strai ht line.

n a clipper, a transversely reciprocable knife having an elongated slot therein and a pivoted operating lever with its end in the slot, the ends of the slot diverging laterally away from the fulcrum of the lever.

'9. In a clipper, a reciprocable serrated knife having an elongated quadrilateral slot therein and an operatin lever having its end in the slot, each. en of the slot being parallel to the longitudinal axis of the lever when the end of the lever reaches the extremity of the movement towards that end of the slot.

10. In a clipper, a transversely recipro- I cable knife having an elongated quadrilateral slot therein and a pivoted operating lever with its end in the slot, the ends of the slot diverging laterally away from'the fulcrum of the lever and the rear edge bem tw een that edge of the slot and the end of the lever.

11. In a clipper, a stationary cuttin comb, a reci rccable knife mounted beneat the comb an having an elongated slot therein and a pivoted operating lever with its end in the slot, the ends of the slot divergaway from the fulcrum of the lever.

Tn testimony whereof I hereunto afiix my signature.

' FOREST L. GRAY.

inwardly convex to maintain contact be-.

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