US2987818A - Supplemental cutting attachment for electric razors - Google Patents

Description

June 13, 1961 J. ROSENSTEIN SUPPLEMENTAL CUTTING ATTACHMENT FOR ELECTRIC RAZORS Filed March 4, 1959 INVENTOR. JUDA L. Rosana-rem United States Patent O 2,987,818, SUPPLEMENTAL CUTIIN A'ITACHIWENT FOR ELECTRIC RAZORS Juda L. Rosenstein, 1909 Tyler St., Hollywood, Fla,

Filed Mar. 4, 1959, Ser. No. 797,108

1 Claim. (Cl. 3D90) This invention relates to electrically driven shaving devices and more particularly to an attachment for that type of razor having a pair of spaced apart rotary shaving elements and with the attachment being primarily adapted to engage and shave the hair from restrictive places such as the nostrils and the ears.

The invention is adapted for use with that type of razor commonly known as Norelco and whereby the razor is provided with a pair of rotary shaving elements that are detachable independently and held in driving connection with separate drive shafts, by spring devices, forming a part of the razor. p

The invention contemplates a relatively slender and axially disposed cutting head that is adapted to be installed within a socket presently formed on the razor and held in position by the spring devices and with the device when in position being connected with the respective drive shaft. The Norelco razor embodies a hinged cutter support that is engageable in overlying relation with the body portion of the razor that houses the prime mover and the spaced apart drive shafts and with the cover being recessed and flanged for the rotative support of the conventional cutting elements and with the cutting elements being held in position by the spring devices. The device of this invention functions to engage the conventional recess of the cover after one of the conventional cutting heads has been removed and whereby the device is clipped into position to project a substantial distance above the normal area of the cutting heads of the razor to be inserted into the nostrils or the ears for effectively cutting superfluous hair therein.

Novel features of construction and operation of the device will be more clearly apparent during the course of the following description, reference being bad to the accompanying drawings wherein has been illustrated a preferred form of the device and wherein like characters of reference are employed to denote like parts through the several figures.

In the drawings:

FIGURE 1 is a fragmentary side elevation showing an electric razor having the device applied thereto,

FIGURE 2 is a plan view showing the device in operative relationship to the electric razor,

FIGURE 3 is a transverse vertical section with the cutting attachment removed and taken on line 3-3 of FIG- URE 2 and,

FIGURE 4 is a horizontal section taken on line 4--4 of FIGURE 3.

Referring specifically to the drawings, the numeral 5 designates the body portion of a conventional electric razor of the type commonly known as Norelco. The body portion 5 is recessed at its upper end, as at 6 and is provided with bearings 7, that support vertically arranged and parallel drive shafts 8, driven in conventional 'manner in unison. The recess 6 is covered and uncovered by a plate 9, provided with spaced apart circular openings 10. The plate 9, is additionally circumferentially recessed at 11, upon its underside, forming flanges 12. The recesses 11 receive the conventional rotary cutting elements 13 of the razor and the cutting elements 13 are held in a recessed driving position, by spring devices 14, having retractable loop portions 15. The loop portions -15 have snapping engagement within grooves 16 formed within the plate 9. The plate 9 is shiftably supported with respect to the body portion 5 in a manner commonly recognized, such as a conventional hinge device and the plate 9 is held against shifting movement by a suitable spring biased latch.

Adapted to seat within one recess 11, is a cutting de vice, illustrated as a whole by the numeral 17. The cutting device comprises a cylindrical base 18, having a lower circumferential flange 19 that is proportioned to seat within the recess 11 and to be held against displacement by the spring devices 14. The cutter device 17 embodies a relatively slender cylindrical shell 20, preferably formed integral with the base 18. The shell 20 is closed at its upper end by a semi-spherical end portion 21. The side walls of the shell 20 are provided with a plurality of equidistantly spaced and angularly arranged slots 22, that extend for the major height of the shell. The base 18 is cylindrically recessed at 23 and the recess 23 communicates with an enlarged cylindrical recess 24, that opens upon the bottom of the base 18. Rotatably supported within the shell 20, is a cutter element 25, that is formed tubular and having an open upper end. The side walls of the cutter element 25 are cut away as at 26 to form equidistantly spaced cutting blades 27, that have a relatively close cutting engagement with the edges formed :by the slots 22. The cutting element 25 is provided with an integral cylindrical lower base portion 28, that is rotatably engaged within the recess 23. The base 28 of the cutter element 25 is provided with a generally rectangular slot 29, that receives a correspondingly shaped upper end portion 30 of a drive shaft 8. Disposed within the recess 24, is a closure gasket 31, that overlies the base 28. The gasket 31 may be formed of fiber, plastic or the like, functioning as a lower bearing surface for the cutter device 25.

In the use of the device, the plate 9 is released and swung laterally, after which one cutter device 13 is released by the spring 14 so that the cutter device may be removed. With the cutter device 13 removed, the cutter device of this invention is inserted within the socket normally supporting the cutter 13 and the spring arms 14 then again shifted to engage the groove 16, supporting the cutting device 17 in a manner similar to the cutter 13. The plate 9 is then swung downwardly to its latching engagement with the body portion 5, in which position, the shaft 8 will be automatically engaged within the groove 29, effectively imparting a driving action to the cutter element 17 when the prime mover is energized. It will be understood of course that the cutter element 25 and the gasket 31 are previously assembled and the gasket 31 is frictionally held against accidental displacement within the recess 24, thus holding the parts in their assembled relationship. Now, when the prime mover is energized, the cutting element 25 will be rotated by its associated drive shaft 8, causing the blades 27 to override the inner marginal edges of the slots 22, successfully cutting any hair that projects inwardly of the slots. The shell 20 is proportioned to be engaged into either the nostrils or the ear of the user. After using the attachment, it may be removed by merely shifting the cover 9 laterally and then shifting the springs 14 together so that their terminal ends will be released from the groove 16, at which time the attachment may be removed and the other cutting element 13 installed in its original position so as to permit the razor to function in its normal capacity. The device may be cleaned after prolonged use, by removing the gasket 31, and slipping the cutter element 25 outwardly for removal of the accumulated hair therein.

While the device has been illustrated as being a substitute cutting element for one of the cutting heads 13, it is also contemplated that the base #18 may be extended to provide an additional flange so that the device can be engaged within both of the sockets for the cutters 13.

It will be apparent from the foregoing that a very novel form of supplemental cutting device has been provided for a specific type of electric-razors. The device has been proportioned to receive within the socket normally provided for the razor cutting elements and in no respe'ct, has the razor construction been altered. The device is strong, durable, economical to manufacture and provides a very desirable supplemental cutting element for the Norelco razors presently in use. The cutting elements 25 may obviously be replaced-from time to "time as "they become worn, similar to other cutting heads presently 1n use.

1 It is to be understood that the invention is-not limited to the precise construction sh'own, biit that changes are contemplated as readily fall within the spirit of the in vention as shall be determined by the scope of the subjoined claim.

Having described my invention, what Iclaim as new and desire to secure by :Letters Patent is: A shaving or cutter attachment for electric razors, the attachment comprising a cutter assembly that is adapted to be mounted upon and driven by a drive shaft of the razor, the cutter assembly including a hollow slotted shell having a flanged base portion that has seating engagement upon the 'razor-co-axial with the drive shaft of the-razor, a rotative cuttingdevice engaged inthe shell axially thereto and that has a cooperative cutting-engagement with the slots,

-theeutting-device having a-flanged base that-is rotative in a cylindrical recess formed in the base of the shell, means on the base of the cutting device having a key connection with the drive shaft of the razor, the slotted shell being elongated and cylindrical and having relatively thin side WalIs,tlie 's'rots eite'nding for :themajor height of the shell and with the slots being;equidistantlyspacedand vertically angled, the base for the shell being cylindrical and its flange being circumferential "for seating engagement upon the razor, the cutter device being cylindrical and having spaced apart cuttingblade's that frictionally engage the interior walls of the shell to override the marginal-edges of the slots and means engaged the base of the shell for' maintaining the'cutterelement in rotative engagement within the shell against axial displacement.

'ReferehcesCi'ted in the file of "this patent 'UNIT ED STATES PATENTS 1,262,536 Martin Apr. 9, 1918 2,026,630 Harris Ian. 7, 1936 2,212,624 Testi Aug. 27, 1940 2,336,160 Boyd Dec. 7, 1943 2,601,720 'Qarissimi a- July 1, 1952 2,783,533 Wilson Mar. 5, 1957

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