US1343012A - Electric safety-razor - Google Patents

Description

H. SENGEBUSCH.

ELECTRIC SAFETY RAZOR.

APPLICATION FILED JULYZ. 1917.

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siren stares HANS SENGEBUSCH, OF CHICAGO, ILLINOIS.

ELECTRIC QAFE'IY-RAZOR.

Specification of Letters Patent.

, Patented June a, teen.

Application filed July 2, 1917. Serial No. 178,122..

that kind in which the blade is rapidly reciprocated'on the guard, by back-and-forth sliding motion of the blade in the bladeholder, so that the blade has. a sawing action at the cutting edge thereof, and whereby the operation of shaving is made easier and more satisfactory, for the reason that the cutting is not only accomplished by the forward strokes of the razor in the hand of the user, in the ordinary manner, but also by the rapid reciprocation'of the blade relative to the guard with which the razor, being a safety razor,'is necessarily provided.

It will be seen that this is an improvement on the construction shown and described in application Serial No. 150,378, filed February 23, 1917, in which the invention is covered broadly.

The object of the present invention is to provide a novel and improved construction whereby the different parts thereof can be easily assembled and taken apart, and whereby the razor will be comparatively inexpensive to manufacture.

It is also an object to provide certain details and features of construction and combinations tending to increase the general eiiicienoy and desirability of an electric safety razor of this particular construction.

To these and other useful ends, the invention consists in matters hereinafter set forth and claimed.

In the accompanying drawings Figure 1 is a side elevation of a safety razor embodying the principles of the invention, showing the end portion of the handle broken away for convenience of illustration. I

Fig. 2 is a front elevation of the'structure shown in Fig. 1.

Fig. 3 is a horizontal section on line 3-3 in Fig. 1.

Fig. 4 is a vertical section on line 4-4 in Fig. 3.

' swinging j aw-section Fig. 5 is a view similar to Fig. 4, but with the handle and magnet omitted, and showing the blade-holder open.

1g. 6 is a perspective of the body-section of the blade-holder.

perspective of the pivot or of the blade-holder, by which the blade is clamped in place.

Fig. '8 is a perspective of the blade-retainer and guide, being the element which reciprocates with the blade.

ig. 9 is a perspective of one end-portion of the element shown in Fig. 8, turned over, and showing Fig, 7 is a one end-portion of the blade. As thus illustrated, the invention comprises a handle A provided with a head B, which latter is cylindric in form, and which contains an electro-magnet b, the latter being disposed transversely of the handle. This magnet is provided with a core 1 and the coils 2, of any suitable character, said core having a pole-piece 3 which projects throughone end-wall of the cylindric head B, so that the the exception of said pole-piece. The head B can be made of metal or any other suitable material which will be suitable for the purpose, and is sealed at both ends so that the magnet is contained in a water-tight compartment, whereby no leakage can occur to injure the magnet. The coils 2 are adapted to receive an alternating current, of suitable character, and for this purpose electric conductors may extend through thehandle A to the terminals of the electro-magnet, whereby the latter is energized by the alternating current.

The blade-holder comprises a body-section C which is formed of sheet-metal, and which is of such shape that it has teeth 0 to form the usual guard along one edge thereof. This body-section C is provided with curved walls .4 and 5 to fit the cylindric outer surface of'the head B, and to form a seat for the latter, the wall 4 having a curled por tion 6 to serve as a pivotal bearing. At its opposite ends, the section (l is provlded with brackets 7 having openings 8 to provide supports or bearings for the I'pintle 9, which latter is of any suitable character. The jaw-section D is also formed from sheetmetal, being provided at its opposite ends entire magnet is inclosed, with with brackets 10 having openings 11 for the pintle 9, being provided with' a jaw or clamping portion 12 to rest upon the blade E, and with a rear curved wall 13 which conforms to the cylindric rear side of the head B, when the latter is in position in the blade-holder. The blade-retainer F is made of sheet-metal, and has a flat body-portion f formed at its opposite ends with turned-over or bent lugs 14; which engage and hold the opposite ends of the blade, and the rear edge of this plate or retainer and guide F is provided with lugs 15 which extend over the rear edge of the blade. Also, it will be seen,

the flat body-portion f has a portion thereof partially cut out and turned up to form an arm 16 having the opening 17, which latter engages the end portion 18 of the flat spring 19, which latter is secured flatwise to the armature 20 of said magnet, it being observed that this armature is a flat disk of iron or steel disposed directly in front of the pole-piece 3 of the magnet. The other end of the spring 19 is provided with a rigid pin 21 which engages the pivot bearing 6, whereby, after the portion is disengaged from the opening 17, the armature 20 and spring 19 and the pin 21 can be removed together as a unitary or separate part, or may be removed from the blade-holder along with the magnet which forms the head. of the handle. sition shown in Figs. 1, 2, 3 and 4, the blade is locked in the blade-holder, and the bladeholder is held on the magnet in the position shown, by the interlocking engagement between the portion 18 and the'opening 17, so that the socket-piece 23 of the portion 4 of the blade-holder. "It will be understood that the tubular rear edge-portion 24 rOf the blade-retainer and guide F is mounted on the pintle 9, so that the flat body-portion f swings about the same axis that the clamping jaw D swings on when theblade-holderis opened to release the blade. When the parts are all together, fixed relation to eaclrotherby the interposed head B of the handle, so that the clamping 1 portion 12 of the swinging jaw is held firmly on the blade, and the latter may have itsv ends provided with notches 25 to engage the lugs 14 of the blade'retainen When the current is turned'on, so that the magnet b is energized by the alternating current, the armature 20 is rapidly vibrated, and this reciprocates the blade-retainer F endwise, on the pintle 9, causing the blade E to have a rapid endwise reciprocation on the guard 0, by a back-and-forth sliding motion in the blade-holder. This, of course, causes the sharp edge of the blade to have asawing actionwhen in use, as well as a direct forward cutting action, so that the razor bethe When the parts are in the po-' 22 is held in the notch the portions 1 and 13. are held in 1 comes effective by simply moving it slowly forward, and. the shavingoperation is thus rendered much easier and more satisfactory.

To remove the blade, the cylindric head 13' ing jaw-section D to be swung outward (see Fig. 5), and then the blade-retainer F can be swung into position to facilitatethe removal of the blade edgewise therefrom, by lifting the front edge of the blade to raise the notches 25 from the lugs 14, thus permitting the rear portion of the blade to slide over said lugs.

blade-holder. is locked in position to retain projection 26 As. stated (see Fig. 1), the

the blade while the-cylindric head B is in position between theportions 4 and 13,- as

engages the indentation i 27 to hold the head B against rotation; but, the portion 13 is sufiiciently springy to per? mit disengagement of the projection 26 from the indentation 27, and when the bladeholder is removed, after rotating the magnet in the holder, the two portions aand 13 V are thenfree to have relative movement toward each other, thus openingthe bladeholder blade.

With the foregoing construction, it will} 1 00 be seen thatythe blade-holder can be made and permitting the'removal of the.

more or less economically and cheapl from sheet-metahby. simply stamping an bending the parts, and

that the construclion .of

the magnet is also very simple'and comparatively inexpensive. The said magnet, as previously hermetically sealed in the head B so that no water can leak into the compartment which contains themagnet during the use of the razor.- The blades can be of any suitable character, but are preferably thin fiat blades,

of suitably tempered steel, with one cutting edge, but it is obvious that by omitting the lugs 15', and holding the blade only-at the ends thereof, double-edged blades can be .used, if such are desired. The head B can bemade water-tight in any suitable or desired manner, or the interior of this cylindric shell or head can befilled with paraffin or some similar preparation which will protect the magnet and prevent the entrance of water.

- With the foregoing construction, it will be seen that the armature 19 is mounted to vibrate freely andlunrestrictedly and without exercising any control over the electric current, so that said armature and the blade vibrate in unison, at high speed. The magstated, and "as shown, is practically net, of course, remains stationary during this rapid vibration of the armature.

With the foregoing construction, it will be seen that the momentum of the armature 20, while in motion, is substantially in the same direction as that of the blade, so that the vibration of parts is all transversely of the razor handle, and in a direction parallel or substantially or practically parallel with. the edge of the guard c. In this way, there is no vibration, or tendency toward vibration, in a direction longitudinally of the handle A, while the razor is in operation; but, at the same time, the handle and magnet are removable as a unit, with the armature on the outside of the head of the magnet casing, and'the hinged clamping member D cannot be swung away from the, blade until after the magnet is removed, whereby the magnet constitutes the means for retaining the blade-holding device closed on the blade.

What I claim as my invention is 1. An electrically operated safety razor of the type wherein means are provided to movably support a vibratory armature at one end and to detachably connect the free end thereof with a blade, so that the armature and blade vibrate in unison, and with the momentum of thearmature substantially in the same direction as that of the blade, the magnet being disposed in position to act upon the middle portion of said armature and being wound to receive alternating current to electrically cause endwise sliding movement of the blade relatively to a guard in one direction, and wherein a spring is provided for mechanically actuating the arma-. ture and blade in the opposite direction, characterized by this, to-wit'z-that guiding means for the blade are provided, including 7 a hinged clamping member to hold said blade in operative position, in combination with means for removably holding the magnet and to prevent removal of the blade except by first removing the magnet from the structure in which the blade is held.

2. A. structure as specified in claim 1, said guiding means including a reciprocating blade-retainer hinged on the axis of said clamping member.

3. A- structure as specified in claim 1, and a handle, said magnet having a cylindric water-tight casing forming a head for said handle, which handle and head are removable as a unit, and said armature being carried on the outside of said head.

4:. A structure as specified in claim 1, said magnet being rotatably movable in the razor, and means whereby said magnet must be rotated from normal position before it can be removed.

5. A structure as specified in claim 1, said guiding means including a pintle for said clamping member.

guiding means including a pintle for the rear edge of said clamping member, and a re ciprocating blade-retainer on said pintle.

8. The combination of a handle, an electric motor forming a fixed head for said handle, a'blade, and a blade-holding device which is slidable onto and off from said head, so that the head forms a support for said device, having meansto operatively connect said blade with said motor.

9. In a safety razor, a blade-holder having a pintle, a blade-retainer and guide mounted -on said pintle, whereby said blade-retainer and guide is supported for both swinging movement and endwise reciprocation, a blade detachably held on said blade-retainer and guide, and means to ra idly reciprocate said blade-retainer and gui e, said blade-holder having a guard to support the reciprocating cutting-edge of the blade.

10. A structure, as specified in claim 9, said means comprising an 'elect'ro-magnet provided with a vibratory armature 'having means to detachably engage said blade-retainer and guide, and means whereby said armature is removable when detached from said blade-retainer. 4

11. A structure, as specified inclaim 9, said means being electrically operated and having provisions to engage and disengage said blade-retainer and guide.

12. In an electrically operated safety razor, two inovably connected blade clamping members having opposed blade clamping portions, other portions extending from the blade clamping portions, means comprising a shell containing an electric magnet and removably and frictionally engaging said other portions'to force said blade clamping portions toward each other, so that a blade ,may be slidably clamped between them, an armature mov'ably mountedon one of said other portions and disposed in position to be operated by said magnet, and means adapted to connect the armature with the blade in said razor, whereby the vibration of the armature will reciprocate the blade.

13. In a safety razor, the combination of means including a pair of pivotallyconnected clamping jaws, a blade clamped between said jaws, one of said'jaws having means forming a guard for the cutting edge of the blade, a handle, a fixed head on said handle, and portions rigid with said clamping jaws to detachably engage said head, thereby 'to keep said jaws clamped tightly upon the blade, said head being removable e from between said portions to. permit the complete disconnection of said jaws and blade from the handle and the opening of said jaws.

14. A structure as specified in claim 13, said head being cylindric in form to permit oscillation thereof between said portions and means whereby partial rotation of sai H S SENGEBUSCH.

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