US2220800A

US2220800A - Shaving implement

Info

Publication number: US2220800A
Application number: US209235A
Authority: US
Inventors: Jepson Ivar
Original assignee: Chicago Flexible Shaft Co
Current assignee: Chicago Flexible Shaft Co
Priority date: 1938-05-21
Filing date: 1938-05-21
Publication date: 1940-11-05
Anticipated expiration: 1957-11-05

Description

' Nov.'5, 1940. L JEPsoN suAvzwa :Hamam Filed May 21, 4193s Patented Nov. 5, 1940 UNITED STATES I smivrNG mLEMENr Ivar Jepson,V Chicago, Ill., assigner to Chicago Flexible Shaft Company, Chicago, lll., a corporation of Illinois Application Mey 21.1938, sensi No. 209,235

3 Claims.

This invention relates to shaving implements of the type known as dry shavers and has for its object certain improvements on the invention in the patent to John Bruecker, No. 2,081,694.

One of the objects of the present invention is to provide a shaving implement of the character described in which the perforated portion of the comb is slowly oscillated or moved back and forth while the cutter is in operation. The movement thus imparted to the comb supplements the motion imparted by the hand of the operator in moving the shaving head across the face and this supplemental movement serves to more effectively work the beard hairs into the small openings and thus enhance the eilic'iency of the shaver.

Another object is to provide an improved structure and operating means for simultaneously operating the cutter and the comb for the purpose intended.

Other objects and attendant advantages will be appreciated by those skilled in the art as the invention becomes better understood by reference to the following description when considered in connection with the accompanying drawing, in.

which- Figure 1 is a longitudinal sectional view through the cutting head end of a shaving implement e bodying my invention; f

' 30 Fig. 2 is a face view of the comb, removed;

Figs. 3 and 4 are cross-sections taken substantially on the section lines 3-3 and 4-4 of Fig. 1;- and Figs; 5 and 6 are enlarged cross-sections through the cutting head showing the opposite positions of the comb.

My invention contemplates slowly moving a.

curved or tubular comb back and forth upon andwith respect to the housing or handle proper by means of which the comb is manipulated in the shaving operation and this movement of the comb being simultaneous with the operation of a cutter in cooperation with the inner side of the comb. In the form here shown, the comb designated generally by II is tubular and has a closely per- 55 fixed a gear I8 which is driven by a gear I9 in turnV fixed to a power driven shaft 2| journaled in the body structure above mentioned. This shaft 2i may be theJ armature'shaft of an. electric motor housed in the body structure. The motor is preferably of such small size and the structure is so shaped and proportioned asto held in the hand of the operator for manipulating the shaving implement. Upon the opposite end of the shaft Il is mounted a cutter holder designated generally by 22 equipped with one or more cutter` blades of any suitable or preferredV construction adapted to be moved across the inner side of the perforated portion of the comb in shearing engagement therewith. In the present case I have shown atvcutter blades 23' of the 15 type and construction described in. my copending application Serial No. 209,233 led May 21,1938. These blades are free to move radially and in the cutting operation each blade is pressed outwardly against the inner side of the perforated 20 portion ofthe comb by centrifugal force which may, if desired, be supplemented. by the pressure of alight flat spring 24. In the embodiment here shown the cutter blades are rapidly moved across the curved perforated portion of the combV in g5 shearing coaction therewith by rotation of the head 22 driven from the armature shaft 2| as above described. Simultaneously with this operation of the cutter blades the comb II is slowly oscillated by suitable means, such, for example, asv 30 a. driving train operated from the amature shaft 2I. As an illustration the shaft 2I has an extension 25 which is connected through suitable intermediate reduction gearing 26 and 21 to an eccentric operating shaft 28 journaled in what may 35 be termed the gear casing portion 29 of the housing structure. To this shaft 281s fixed an eccentric 3 I which operates a connecting rod or link 32 pivotally connected at 33 to the comb-carrying hub I3. The arrangement is such that upon each complete rotation of the shaft 28 and its eccentric 2| the tubular comb will be oscillated back and forth from the position shown in Fig. 5 to the position shown in Fig. 6 and bsckto the starting position shown in Fig. 5. As a further illustration referring to Fig. 3, it will be noted that the arc designated 34 represents approximately 68 on the face of the comb which in this instance is the approzdmate width of the perforated area. The comb will be oscillated approximately 68' in a .counterclockwise direction viewing Fig. 3 to the position denoted by the arc 35; and then back again to the original position. This,back and forth movement of the comb is performed simultaneously with the operation or the cutter and does not disturb the cooperative relation between the cutter and the comb. The relative speed of the cutter blades with respect to the com-b as well as the relative speed oi the comb with respect to its supporting body may, of course, be varied. the intention being that the comb shall be moved slowly back and forth at approximately 100 complete oscillations per minute, or less than this rate.

The -invention is not to be understood as re-` stricted to the details set forth, since these maybe modiiled within the scope of the appended claims, without departing from the spirit and scope o! the invention.

I claim:

1. In a shaving implement, vin combination, a comb of cylindrical conguration having a shaving area of extremely thin material provided with closely positioned hair receiving openings, a cutter adapted to move across the inner side of said shaving area in shearing engagement with the inner edges of said openings, a holder for the cutter mounted to move about an axis coaxial with the longitudinal axis of said cylindrical comb, means for operating the holder to move the cutter at a high rate of movement in said shearing engagement. and means operating simultaneously with the cutter operating means to oscillate the comb about said longitudinal axis at a slow rate of movement compared with said movement of the cutter.