US1701148A - Electric hair clipper - Google Patents

Description

Feb. 5, 1929. 1,701,148

A. J. DREMEL,

ELECTRIC HAIR CLIPPER Filed ly 19 6 2 Sheets-Sheet 1 I 1/? w @i &

Feb. 5, 1929. I f 1,701,148

- A. J- DREMEL ELECTRIC HAIR CLIPPER Filedjuly 19 1926 2 Sheets-Sheet 2 Patented Feb. s, 1929. 1,701,148 UNITED STATES PATENT OFFICE.

ALBERT J. DREMEL, OF BACINE, WISCONSIN.

ELECTRIC HAIR CLIPPER.

Application filed July 19, 1926. Serial-No. 123,305.

This invention relates to electric hair constructed that although the devicemay li be subjected to relatively severe jars that In general, this invention is an improvenevertheless the bearings for the revoluble mentover that disclosed in my priorPatent shaft or crank shaft or similar part are so 60 #1,541,334, of June 9, 1925, for electric hair formed that they will automatically align clippers and has the same general objects as themselves, although their supports may those set forth in such patent, such as the have become shifted, and thus a self-aligning provision of an electric hair clipper which set of bearings for the shaft is provided will run either upon A. C. or D. C., which whlch will prevent any binding whatsoever, 65

is self-contained, which is of very small size, even under extreme conditions. Further d hi h i lf-ventilating. objects are 'to provide an electromagnetic Further objects are to provide a novel clipper, in which the controlling contacts are form of mounting in which a main supportreadily accessible, and in which a novel form ing plate is employed and carries the electroof cut-off switch or button is employed in 7 magnets, the armature, the stationary clipper Connection with these contacts to move the blade, and the bearings for the contacts, contacts themselves out of operative position switch, and crank shaft, and in which the and to thus open the electric circuit of the assembly of the parts upon this main supdevice. porting plate maybe most easily made, and An embodiment of the invention is shown 75 in which the utmost accessibility of the parts lmthe accompanying drawings in which: is provided, as the casings or housings are Flgure 1 is a plan view of the device with carried directly by said plate, and the plate the casing shown in section; may be removed from the casing as a unit F lgure 2 is a vertical sectional view and will carry all of the operative parts. through the device, such view corresponding 80 2 Further objects are to provide an electric to a section on the line 2-2 of Figure 1;

hair clipper in which no die castings or other ig re 3 is a sectional view on the lin cast parts of this type are required, but inf Figu e 2; Y stead, in which the casings and the parts Figure 4 is a plan view of the main supthereof may be for d f stampings to porting plate, a part of the construction 85 secure the utmost cheapness of construction. being shown in section;

Further object ar t r vid a l tri Figure 5 is a side elevation of the structure hair clipper in which a resilient connection shown in Figure 4 with the upper bearing is provided between the armature and the 1 he r nk Shaft mi movable clipper blade of such a natur th t Figure 6 is a perspective view of the clip 00 although the movable clipper blade may be for the magnet ends or cores;

- held stationary, as by clogging, that never- F gure 7 is a diagrammatic view showing theless the armature will continue to execute the electric Connections and the COIItaCtS complete vibrations, and in this way the The electric hair clipper is provided with clipper blade will receive slight motions and a main supporting plate 1 of sheet metal 05 will thus be caused to work itself out of stamped into the form shown in Figures 4 p the hair which, as stated, may have tempoand 5. This sheet metal plate 1 is provided rarily clogged the blade. In other words, with upturned forward and rear lugs 2 and ,3

the construction is such that the machine whichreceive the attachingscrews 4: and 5 goes on operating, although the movable of the upper and lower casing sections or '100 blade may become clogged, due to forcing it members 6 and 7.- These casing members into too great an amount of hair in a given are stamped from sheet metal and thus the time. In this way, therefore, a machine is expense of die casting or similar construcprovided which continues to function, and tions is avoided.

which will work itself out of any clogged Further, the main supporting plate 1 i 0 condition. provided with the pivot pin 8 for the vibrat- It is to be understood that these clippers ing armature 9, and with downwardly exare subject to jars in the normal handling of tending arms 10 equipped with a rearwardly the device, and, consequently, danger of misslanting lugsall for the reception of fastenalignment of the parts with consequent bind ing members for the stationary blade 12 so mg frequently results. This invention is that the stationary blade is rigidly carried deslgned to provide a clipper which is so by the supporting plate 1. Y

The vibrating armature 9 is, as stated, pivotally carried by the pin 8 and is provided with a pair of forwardlyextending elongated leaf springs or flat springs 13.

These springs 13 have downwardly extending, rounded ends 14 which fit within 'a cutout formed in the movable bladev 15, as

most clearly shown in Figures 1 and 2, with the rounded portions 14 of the springs contacting with the faces 16 of the cutout in the movable blade. Further, the stationary plate carries a spring 17 which is provided with a rectangular arm 18 equipped with a I cutout 19 through which the springs .13 project. This last mentioned spring 17 has its forward edge bearing upon the movable "blade 15 and, consequently, applying the requisite yielding pressure to such blade to hold it in engagement with the stationary blade 12, such movable blade being guided 1 faces to the vibrating armature 9. The

.cores 23 or arms of the magnets are curved at their inner ends, as indicated at 24, to conform to the cylindrical portion 25 (if the armature, so that the maximum area of ux path is provided. These magnets, it wi 1 be seen, are formed from similar stampings and are "U-shape, and may be very cheaply produced. They are 7 stacked and complessed in the form shown and are each held by means of a single screw 26, They are prevented from turning by means of the.

clip 27 which asinay be seen from Figure 6 is provided with two channels to receive the ends 23 of the magnet cores. The screws 26 pass through the clip, through themagnet cores, and into the plate 1, such screws entering the threaded apertures 29 of the plate. Thus an extremely rigid mounting for the magnets is secured and a minimum of fastening members, such asscrews are employed. The channeledportions of theiclip 27 are joined by means of a circular or disc-like portion 30, which is apertured, as indicated at 31 in Figure 6, to receive the pivot pin 8 of the armature. Thus the upper end of the pin is also rigidly supported by means of the clip 27, so that the pin is held against loosening even when subjected to the continuous, rapid stresses imposed by the vibrating armature.

Preferably, the supporting plate 1 is p pressed, as indicated in Figure 6, such depressed portion furnishing additional room in the casing for the wires from the electromagnets. Further, by having the supporting plate cut out, as shown in Figure 4,

ventilation may be readily secured, and the air may be drawn from the under side of the plate, through the plate against the magnet coils, and projecting through the opening %2 (see Figure 2) ofthe upper casing mem- Adjacent the rear end of the supporting plate 1, an upper support 33 is provided, and

is equipped with downturned arms 34, as

shown most clearly in Figure 3. llhese arms are provided with feet or lugs35, which are apertured and threaded to receive the screws 36. The screws 36 also serve to hold the insulating contact carrying plate 37.

It is to be particularly noted that the support 33 and the plate 1 are each provided with socketed or spherically recessed por-' tions 38'which receive the spherical bearings Y 39 for the crank shaft 40 (it being noted that the crank shaft 40 has the flywheel omitted in Figure 3 for the sake of clearness).

These spherical bearings are elongated to provide elongated bearings for the crank shaft'40. If the device is subjected to jars and the upper support 33 is shifted relative to the main supporting plate 1, no damage can result, as the spherical bearings insure their. correct and free alignment to thus relieve the crank shaft of any binding whatsoever.

'It is to be noted that the extreme outer end 9 of the armature is slotted and receives the crank 41 of the crank shaft and, consequently, as the armature vibrates the crank shaft is rotated.

The crank shaft is provided with a fly wheel 42 (see Figures 1 and 2) which is in the natureof a, fan, to throw the air outwardly through the aperture 82 in the upper casing. Further, this flywheel insures the continuous rotation of the armature and carries the crank past dead center. In addi tion to this, the flywheel 42, it will be noted from Figure 2, is closely adjacent the aperture 32 and,- consequently, .nay be given an initial, spin by the thumb or finger of the operator-in starting the device. 1

In connection with the spherical bearings 39, it is to be noted from F igure 3, that a very simple means has been provided for holding them in place. This means consists of av U-shap'ed spring 43 whose upper and lower arms are ape'rtured and hold the bearings in their correct positions within their sockets. Thisspring may be held in place by one of the screws 36, such spring .being clamped beneath a foot 35 of the upper suport.

The lower end. of the crankshaft 40 is v in reality the movable portion of the contact making device. It is provided with an ear 46, whereby it may be attached to the insulating plate 37. A pair of stationary contact members 47 are secured to the insulating pate, and the cooperating parts of the movable arms 47 and such stationary contacts are equipped with suitable non-corrosive contact faces. The stationary contacts 4:? are connected to the coils and 21 of the electromagnets. The other ends of the coils are connected together and to a return conductor 48. One conductor is also connected to the ill-shaped contact member and is indicated by the reference character 49 in Figure 7. it is to be noted that the conduc tors have been omitted from Figures 1, 2, and 3 for the sake of clearness. I

in the normal operation of the device, the flat face 44 of the crank shaft allows first one and then the other of the movable contacts to engage its corresponding stationary contact and, consequently, permits energiza-- tion of the appropriate electromagnet. This draws the armature towards that electromagnet and gives a turn or twist to the crank shaft. Continued rotation causes the cylindrical. portion of the lower end of the crank shaft to open the circuit for the previously energized electromagnet. The flat face 4% of the armature shaft 40 is then presented towards the other spring arm &6 and, consequently, permits the opposite-electromagnetto become energized. This operation continues in rapid succession with consequent vibration of the armature, spinning arms and hold them permanently out of engagement with the stationary contacts, as shown in Figures 2 and 7. The lower end of the pin 52 is equipped with a thumb piece 54: on the under side of the device, so that the insulating block 53 may be slid either between the spring fingers or outwardly therefrom.

'Thus, the necessity of a distinct, and separate switch is avoided and the make and break mechanism for the device itself con- 'stitutes the controlling switch for the apparatus.

It is to be particularly noted that applicant has made an electric hair clipper which is of extreme compactness, and may be readily carried in the hand of the operator, and

may be most easily manipulated.

Further, it will be seen that the device is of very light weight, which further facilitates the easy operation of the device in the actual cutting of the hair.

It is to be noted further that the device may bemade in a very inexpensive manner, as no die casted or complicated parts are required, but instead in which stampings are employed. As is well known in the manufacture ofthese devices, such construction permits the utmost cheapness of manufacture.

It is to be noted further that a remarkable ease of assembly is permitted by this device, as the entire operative unit may be assembled at a single time upon the supporting main plate, and that thereafter it is a very simple matter to slip the shells into place and secure them to the lugs of the main supporting plate.

Further, the main supporting plate directly carries the stationary cutter blade and, consequently, the exact relative position of these parts is assured.

Although the invention has been described in considerabledetail, such desgription is intended as illustrative rather than limiting as the invention may be variously embodied and as the scope of such invention is to be determined as claimed.

I claim:

1. An electric hair clipper comprising an electromagnet, a vibratory member actuated thereby, a pair of clipper blades, one of said blades being movable with reference to the other, and easily deformed resilient means interposed between said vibratory member and the relatively movable clipper blade, said resilient means being relatively extended as compared with the stroke of said relatively movable clipper blade, whereby said vibratory member maintains its vibratory motion when said clipperis clogged.

2. An electric hair clipper, comprising a pair of electromagnets, an armature mounted between said electromagnets, a crank shaft operated by said armature, contacts operated by said crank shaft and controlling said electromagnets, a stationary clipper blade, a movable clipper blade associated therewith, and resilient means connecting said armature and said movable clipper blade and permitting said armature to actuate said crank shaft throughout complete strokes when said movable clipper blade is temporarily held stationary.

3. An electrichair clipper, comprising a.

. pair of electromagnets, an armature adapted to vibrate between said magnets, a cranlr shaft actuated from said armature, an upper and alower frame member having sockets formed therein, spherical bearingsfor said crank shaft'seated within said'sockets, a stationary clipper blade, a movable clipper blade actuated from said armature, and contacts controlled by said crank shaft for controlling said electromagnets.

4., An electromagnetic clipper, comprising a supporting plate having a downturned foot, a stationary clipper blade carried by said foot, an electromagnet, and a vibratory armature carried'by said plate, a movable clipper blade operatively connected to said armature, an upper and a lower shell for enclosin I said electromagnet and armature and sai plate, and securing means for attaching said shells to said plate.

5. A11 electromagnetic hair clipper, comprising a supporting plate, a pair of electromagnets having U-shaped cores, a Vibratory armature mounted between said cores, a bearing member for said armature enclosing opposite ends of said cores, securing means passing through said bearing members, said cores and said plate, a. stationary clipper blade carried by said plate, a movable clipper blade operatively coupled to said armature, and an enclosing shell secured to said erating with said stationary blade and actuatedby said member, and an upper and a lower enclosing shell secured to said plate, said shells being bodily removable from said plate to completely expose said electromagnet, said movable member and said clipper blades.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee,

'in the county of Milwaukee and State of Wisconsin.

ALBERT J. DREMEL.

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