US1504595A

US1504595A - Electrically-operated hair clipper

Info

Publication number: US1504595A
Application number: US649594A
Authority: US
Inventors: Andis Matthew
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-07-05
Filing date: 1923-07-05
Publication date: 1924-08-12
Anticipated expiration: 1941-08-12

Description

Au 12 1-924. I 1,504,595

M. ANDIS BLECTRICALLY OPERATED HAIR CLIPPER Filed July 5. 1925 F i l I 3 INVENTOR.

Patented Aug. 12, 1924.

UNITED STATES .nm'rprnnw nnms, or FRACINE, Wisconsin;

ELECTRICALLY-OPERATED 1mm cmrrnn.

Application filed July 5,

To all whom it may concern Be it known that I, Mar'rrrrnv a citizen of the United States, 'I'BSICllIIg at Racine, county of Racine, and State of 5 Wisconsin, have invented new and useful Improvements in Electrically-Operated,

Hair Clippers, of which the fpllowing is a specification.

My invention relates to improvements in 1 electrically operated hair clippers;

' The ob ects of my invention are to provide a more efficient mechanism; to provide a form of constructionadapted to permit the width of the casing to be reduced to a 15 minimum and its shape confo'rmed to the requirements of a handle, whereby it may be held in the handof the operator for considerable periods without fatigue; to provide means for' efficiently utilizing an alternating electric current to actuate the movable cutter or. blade and to regulate the stroke and the pressure of the blades upon each other; toprovide an improved blade actuating member or' lever ;to provide improved means for'connecting said member with the blade; and to provide an improved spring mechanism for supporting and retracting the lever.

A further object of my invention is to provide a less expensive/ more durable more efficient, and more easily regulated electrically driven hair clipper.

In the drawings Figure 1 is a lan view of my improved hair clipper with the casing cap removed.

Figure, 2 is a side view oi the same with portions of the side wall broken away.

Figure 3 is a detail view of the actuator mounting in rear elevation F a Figure 4 is a plan view of .the actuator and 1ts mountin in assembled relation.

Figures 5, 6, and 8 are cross sectional views drawn respectively on lines 55, 6-6, 7+7, and 88of Figure 4. Figure 9 is a sectional view drawn on line 9'-9 of Figure 2.

Figures 10 and 11 are respectively end and plan viewsof the, laminated magnet core.

Like parts are identified by ANnIs,

I the same reference characters throughout the several views. A

The casing 1 is preferably formed of aluminum. It is provided with a down- 55 wardly inclined open ended front portion 2 having bearings to receive a stationary 1923. Serial No. 649,594.

blade 3. This blade is secured to the easing by screws 4. The cooperating movablev blade 6 is interposed between the upper portion of the blade 3 and the end of the casing, and this movable blade is provided on its inner face with a raised bearing 7 substantially centrally disposed. Clips 8 are formed to embrace the respective ends of" this bearing, and screws 9 connect the clips and the bearing with the blade 6. The clips comprise strips of resilient material having upwardly and rearwardly projecting portions, the ends of which are reversely turned to form yielding bearings 10 between which a forked connecting member 11 may be engaged. The arms 12 of the fork extend'downwardly at the respective sides of the bearing member 7, whereby the blade 6 is held in position on the blade 3 and in pressure relation thereto.

The connecting member 11 extends downwardly and forwardly from the elbowed portion 13 ot a laminated armature or actuator arm 14 which extends along' one side of the casing 1, and connecting member 11 ;is secured by a clip 15 and bolts or rivets to the elbowed portion 13 of the armature. The clip 15" may be an integral rtion of the" connecting member 11, stampe or struck up therefrom.

The rear end'portion of the actuator arm 14 is connected by a clip" 16 with a-reversely looped flat spring 17, disposed with its wider dimension in verticalplanes, and hav- 1 mg its opposite end secured within a mounting bracket 20 by the screw 21 and clamping nut 22. The central or iorwardly projecting loop 18 of the flat spring 17 bears against an inturned li 19 on the bracket 20. A'coiled compression spring 25 is interposedbetween the loop 18 and the clip 16, whereby the pressure of this spring 25 will be exerted to urge the actuating arm toward the side of the casing along which its portion 14 extends.

An electromagnet is interposed between the portion 14 of the actuatorarm and the opposite side of the casing 1. This electro magnet has a flat laminated core of the -horsesl1oe type, one leg of which projects through an oval winding 31 with its polar extremity 32 in proximity to the intermediate portion of the actuator arm 14. The other leg extends along the front side of the winding with its polar extremity 32' in proximity to the end of the actuator arm to associated which the clip 15 is connected. Screws 34-. connectthe intermediate portions of the core with the supporting pier blocks 33.

With the described construction, it is ob vious that when the magnet is energized, the actuator arm 14 yvill be drawn toward the polar extremity 32 of the magnet core,- the arm 14 serving-as an armature. soon as the magnet is de-energized, the arm 14-swings outwardly toward the side wall of the casing under the pressure of spring 25. With a 60 cycle alternating current, a rapid vibration of the actuator arm and the blade 6 of the clipper is possible. The pressure. of the blade 6 upon the sta-v tionary blade 3 may be conveniently regu lated by a screw 37 which has threaded hearing in bracket 20, and is adapted at its inner end to engage a bearing head or member 39 secured in the loop 1802f the spring 17. The. loop 18 is fulcrumed upon a bearing projection or lip 24, struck up from the bottom of the bracket 20. Downward pres-' sure at the'bend or front end of the loop 18 tends'to tilt'this loop over the fulcrum 24, thereby swin ing the rearwardl extendingloop or, ben 17 upwardly an causing the front end of the armature 14 to swing L downwardly without interfering with its vibratory movement induced by the electr'o-. magnet' The stroke of the actuator arm 14 may be regulatedby spreadingthe loop 18, and this ma be conveniently done by a screw 40, whic also has threaded bearirg in bracket 20, and has a conically taper inner end portion 42 adapted to serve as a conical wedge between the open endof the loop 18 to spread'the same whenkthe screw is turned inwardly. By spreadin the sides of the loop, the arm 14 is adju inwardly toward the magnet core.

The electrical connections are made at the rear end of the casing through the flexible cord 45, detachably connected with the casing by the screw/threaded plug. 46. Wire 47 passes directly to the 0011 31 and wire 48 passes to the switch box 49, and when theswitch is closed it afiords a means of connection through the wire 50 with the coil. An oscillatory switch operatin member 524s mounted upon the s1de of t e casing. This switch and its operating piece may be of any ordinary type.

It will be observed that the blades 3 and 6 have transversely extending

contacting bearings

58 and 54 with an intervening cavity formed by transversely recessmg the opposing faces of the blades. Thebearings at 53 and 54 arenarrow and the cavity 55 is open at each end, thereby allowing for a transverse delivery of any hair that would otherwise tend to wedge between the blades and interfere with the shearing operation.

By employing a laminated core for the magnet and a laminatedactuator arm 14, a

As along one side wall 0 between the armature and substantially instant de-energization is pos sible. A very eflicient magnet is also provided, and the winding on the flat-core produces an oval coil which occu ies minimum space between the upper and ewer'walls of t e casing. By offsetting the actuator arm so that its armature portion 14may extend the casing, the transverse width of the oasin is reduced to a minimum. The spring hin e connection 17 file bracket 20 is offset across the rear side of the ma at and adds nothing to the width or thic tress of the casing. The elbowed portion 13 extends movement of the armature arm 14"to and from the met core or pole lece causes flexion of th e pring 17 1a thein'itial'bend or rearwardly extending loop- 17. This portion of the spring hinge has some of the characteristics of a pivotal connection but it is adapted to allow the portion 14 of the armature to be drawn flat against the ole piece or opposing end of the core 32. wing to this fact and the length of the arm 14, between the spring hinge at 17 and the connecting member 11, the latter is rmitted to move in substantially a straight transverse line Without any material cramping or binding efiect between the yielding bearings 10. I The movable blade 6 has its rear or lower margin free from contact with shoulders 59 formed on the casin The forked connecting member 11 not on yholds.

the blade in pressure contact with the relatively stationary blade 3, but also positions it and holds it against outward or inward movement. The movable blade is, therefore, wholly free to slide on the blade 3 in any direction that the actuator may move it. I

The casing is preferably open at the toss to afford access to the interior, a cap normally closes this opening and the

screws

37 and 40 extend loosely'through holes in this cap. The latter is connected with he casin byfi rews 41.

1. In a; hai r clip er, the combination or relatively movable one of the blades having a swinging end (loosely interlocked therewith and provided lades, an actuator for 1 2. In a hair clipper, the combination with a support, of a stationary blade, a movable blade adapted to slide freely in any direction upon one surface of the stationary blade, an actuator having one end loosely interlocked with the central portion of the movable blade and its other end connected with the support, means for laterally swinging the actuator to impart a vibratory movement to the blade, and resilient connections for communicating said vibratory movement from the actuator to the blade.

3. In a hair clipper, the combination with a support, of a stationary blade, a movable blade adapted to slide freely in any direction upon one surface of the. stationary blade, an actuator having one end loosely interlocked with the central portion of the movable blade and its other end connected with the support, means for swingingthe actuator upon its supporting connection to impart a vibratory movement of the blade, resilient means for communicating said vibratory movement from the actuator to the blade, and means connected with the support for adjustably pressing said aotuator in the direction of the movableblade to regulate its pressure upon the stationary blade. a

4. The combination with the movable blade of a hair clipper, a set of resilient clips mounted upon the blade and provided with portions inturned, each in the direction of the other, and a vibratory actuator for the blade having a connecting portion engaged between the inturned portions of said clips, whereby the vibratory movements of the actuator may be yieldingly transmitted to the blade.

5. The combination with the movable.

blade of a hair clipper, a set of resilient clips mounted upon the blade and provided with extremities inturned, each in the direction of the other, and a vibratory actuator for the blade having a flat connecting portion substantially perpendicular to the surface of the blade and engaged between the inturned ends of said clip, whereby the vibratory movements of the actuator 'may be yieldingly transmitted to the blade,

said flat connecting portion being also adapted to loosely interlock with the blade to prevent movement of the latter in directions transverse to its vibratory movement.

6. In a hair clipper, the combination with a set of co-acting hair clipping blades, of a support, an actuator for one of the blades, a looped spring connecting the actuator with the support, and electromagnetic means for moving the actuator intermittingly from the normal position in which it is supported by said spring.

7. In a hair clipper, the combination with a set of co-acting hair clipping blades, of

a support, an actuator for one of the blades,

in one direction, a reversely looped flat spring connecting the actuator with the support at oneside of the magnet and disposed with its flat sides in vertical planes, a fulcrum member on the support, upon which one looped portion of the spring rests, adjusta-ble means on the support for applying pressure to the opposite side of the spring between the fulcrum and the blades, and means for loosely connecting the actuator with its associated blade at the other sideof the magnet and substantially at the central axis of the support.-

9. In a hairclipper, the combination with a hollow handle, an electromagnet contained within the handle; an armature having transversely-1 extending spring hinge connection with the handle at the rear of the magnet, and a connecting member in front of the magnet; a relatively stationary hair clipping blade secured to the front end of the handle; a co-acting movable blade loosely supported against the first mentioned blade by said connecting member; and means for applying downward pressure to thearmature and movable blade to-regulate the pressure of the blades upon each other.

10. In ahair clipper,'the combination with a hollow handle, an electromagnet con 11. In a hair clipper having a hollow handle provided with co-acting relatively movable blades at one end thereof, an electromagnet within the handle, an armature loosely connected with one of the blades in front of the magnet and having an offset central portion extending along one side of the handle to the rear of the magnet, a reversely loo ed fiat springdisposed transversely. of t e handle in the rear of the magnet with one end connected with the handle and the other supporting the armature, and a spreader for separating the sides of one of the spring loops to vary the stroke of the armature. 12. In an electromagnetic clipper, the combination with a movable blade and a vibratory blade actuating armature, of a setof yielding clips connected with the blade, and a connecting member on the armature loosely engaged between said clips and adapted to transmit the motion of the armature to actuate the blade transversely. 13. In an electromagnetic clipper the combination withamovable blade and a vibratory blade actuating armature, of a set of yielding clips connected with the blade, and a connecting member on the armature loosely engaged between. said clips and adapted to transmit the motion of the armature to actuate the blade transversely, said blade having'a shoulderedprojection and said connecting member being forked and adapted to loosely engage said projection to hold the blade against outward or inward movement. 14:. In an electromagnetic hair clipper, a vibratory blade actuating armature, a hollow handle enclosing said armature, a transversely disposed reversely bent strip of resilient metal connectin the armature with the handle in spring hinge relation thereto, and a coiled spring interposed between two of the legs of one of the spring loops in a posiition to retract the armature by its reco1 15. In a hair clipper, the combination with a hollow handle, of a set'of co-actingl hair clipping blades at one end of the handle, an electromagnet within the handle, a coacting armature having one end operatively-connected with one of the blades, a fiat strip of resilient metal having its width in a plane perpendicular to that of armature movementand reversely looped along a line transverse to the ban le, pne end of said strip being-in. p orting relation to the armature and ,t'hfiotlier end being connected with the handle.

16. In a ,x'hair clipper, the combination with a hollow handle, of a set of co-acting hain clip ing blades at one end of the bandle, an e ectroinagnet within the handle, a. -co-a'cting armature having one end 0 eratively connected with one of the bla es a fiat strip of resilient metal having its width in a plane perpendicular to that of armature movement and reversely looped along a line transverse to the handle, one end of said stripbein in supportin relation to the armature and %he other end icing connected with the handle, and means for spreading one of the loops of said strip to vary the position of the armature. 17.- In a hair clipper, the combination Ting flat clipsof res1 tively connected with one of the blades, a

fiat strip of resilient metal having its width in a plane perpendicular to that of armature movement and reversely loo ed along a line transverse to the handle, 0 e end of said strip being in supporting relation to the armature and the other end being connected with the handle, means for spreading one of the loops ofsaid strip to varythe position of the armature, and adjustable means for urging said stri and armature in a direction at right ang es to the plane of armature movement.

18. In an electromagnetic hair clipper, a transversely movable hair cutting blade, a' vibratory blade actuating armature loosely connected with the blade; and adapted to apply pressure thereto, a hollow handle enclosing said armature, a yielding connection between the rear end of the armature and the handle adapted to allow both downward and lateral movement of the working end of the armature, an electromagnet adapted to actuate the armature transversely in one direction, an armature retracting spring adapted to move it in the other direction, and adjustable means for applying pressure to said yielding connection to V2118 the s 'lade,

direction u on the opposing surface of the stationary lade, a vibratory actuator having one end connected with the support and adapted for lateral swinging movement upon said connection, with,- the support for applying pressure to the vibratory actuator in the direction of and means connected L ioo the stationary blade to regulate the pressure of the movable blade thereon.

20. The combination with the movable blade of a hair clipper, of a longitudinally extending projection on the outer surface of the central portion of the blade, a set of resilient clips secured to the central portion of the blade, having aforked member resiliently eng between said clips, with its fork arms ooseinterlocked with said'projection to hold and. a vibratory blade actuator,

l theblade from movement transverse to its out margin. 21". e combination with the movable blade of a hair clipper, of a set of upstandaged ient material secured to the blade, and a blade actuator having a flat clips in resilient pressure relation thereto,

connecting member" engaged between the said clips having inturned extremities bear:

clips in resilient pressure relation thereto. ing-agamst flat sides of tlfe connecting mem- 22; The combination with the movable ber, and said connecting member being 5 blade of a hair clipper, of a set of upstandotherwise loosely interlocked with the blade ing flat clips of resilient material secured to prevent movement upon the bladein the vto the blade, a blade e etuator having a flat plane of the connectin gTmember.

' connecting member engaged between the MA HEW ANDIS.