US2264033A - Motor - Google Patents

Description

Nov. 25, 1941. J. YoUHousE 2,254,033

MOTOR Filed July so, 1958 4 sheets-sheet 1 INVEN R /1 gouhouse Nov. 25, 1941. y

J. YoUHoUsE 2,264,033

MOTOR Filed July 30, 1958 4 Sheets-Sheet 2 .V NTO Jose $1 Y?) ou m ATTORNE NOV. 25,1941. J, YQUHQUSE l vMOTOR Filed July 30, 1938 4 Sheets-Sheet 5 Fig 7 Fig. 8

il o4 I (04 l H l- 6+ 26 "z i 64 i 26 50 j* i v if UW l l 25 C) 1 U @C [l @o J i @o 60 l I INVENTOR NOV. 25, 1941. J, YQUHOUSE 2,264,033

MOTOR.

Filed July 30, 1938 4 Sheets-Sheet 4 INVENTOR vloseph Youhduse ATTO Y Patented Nov. 25, 1941 ansiosi;

MOTOR Joseph Youlxouse,l Fairfield, Conn., assignor to Casco Products Corporation, Bridgeport, Conn., a corporation of Connecticut Application July 30, 1938, Serial No. 222,123

17 Claims.

This invention relates to shaving machines for personal use.

An object of the invention is to provide a shaving device which is sturdy and rugged in construction and which can be readily assembled with a minimum of operations.

A feature of the invention resides in the subframe construction on which is mounted the driving motory and the cutting means. The subframe assembly will carry the load of the operating parts and will relieve the casing from strain which would otherwise be imparted thereto were the operating parts mounted directly therein.

With the use of the subframe, the motor and cutting means can be assembled, and the assembled unit mounted in the casing of the shaving device as a unit. The casing of the shaving device is preferably a multipart casing of moldable material which completely surrounds the subframe and motor and forms a. handle for the shaving device. The casing is secured to the subframe and held against relative rotation with respect thereto.

At the time when the casing is assembled about the subframe, a switch is disposed in the casing and held in proper relation thereto by the sec-- tions of the casing. The switch is rotatable on the casing and controls the circuit to the motor.

To prevent the sections of the casing from separating, a reinforcing ring is disposed around the outside of the casing and is locked in place to hold the casing sections against unintentional shifting with respect to one another.

As the casing which encloses the assembled unit is used as a handle, it is necessary that its diameter be maintained small so that it will not be unhandy to grasp in using the device.

In order to make the unit as compact as possible so that it will not make the handle of the razor of too large a diameter, a novel motor construction is employed in which a U-sliaped field structure is carried by the subframe and the armature is mounted on the subframe between the legs of the U.

Space is further conserved by providing the armature with a flat disk-shaped commutator, and locating the brushes cooperating with the commutator, on the subfraine so as to extend parallel to the axis to the armature shaft and thus reduce the width of that part of the assembly.

The cutting means is mounted on the end of the subframe and includes a casing having a xed cutting blade or perforated head removably secured thereto. A cutting blade is mounted Within the head and coupled to the end of the motor shaft to be rotated thereby and cooperate with the fixed blade to sever hairs extending therethrough.

Other features and advantages of the invention will be apparent from the speciication and claims when taken in connection with the drawings, in which:

Figure 1 is a longitudinal sectional View of the casing and subframe, taken along line I--l of Fig. 3.

Fig. 2 is a longitudinal sectional View of the casing and support, taken along line 2-2 of Fig. 3.

Fig. 3 is a top plan view of the device.

Fig. 4 is an expioded View of the device.

Fig. 5 is a side elevational view of the cutter blade and the coupling means therefor.

Fig. 6 is a top plan view of the cutter blade and coupling means.

Fig. 7 is a iront elevational view 0i the base member of the subframe.

Fig. 8 is a side elevation of the base member of the subframe.

Fig. 9 is a bottom plan view of the base member or" the sub-frame.

Fig. 10 is a side elevational view of the removable portioh oi' the subframe.

Fig. 1l is a top plan view oi the same.

Fig. 12 is an end view of Fig. 10, looking from the right.

Fig. 13 is a sectional view of the casingtaken along Aline l3-i3 of Fig. 1, showing the sub frame in position therein.

Fig. llt is a transverse section taken on the line H- -lt of Fig.

Fig. l5 a transverse section taken on the line I5-I5 ci Fig. 2.

Fig. 16 is a transverse section taken on line lli-I6 of Fig. l..

The shaving device of the present invention comprises a skeleton subframe 20 adapted to carry the moving parts of the shaving device, and a casing 2l surrounding the subframe and forming a handle for the device, whereby it can be grasped and manipulated during the shaving operation. inasmuch as the sub-frame carries the moving parts, it will take the strain incident to the operation thereof, and the casing can be made of Tenite or other suitable moldable material which can be readily molded to form an attractive handle.

The subframe. as shown in Figs. 'i through 12, comprises a base portion 25 having at one end thereof a collar 26. The collar is preferably formed integrally with the base portion and is provided with an axial bore 21 in which is p0-l sitioned a metallic sleeve 23, preferably brass, carrying a bearing 29.

'I'he bearing is of the self-lubricating type and is made of a metal alloy or other material which will absorb a lubricant. The lubricant may be supplied to the bearing in any desired manner. In the preferredform of the invention, the collar 26 is provided with a transverse bore 39 terminating in an aperture 3l in the sleeve 28. A wick-321s saturated with a lubricant and is disposed in the bore and aperture so that it engages the surface of the bearing 29. The transverse bore is closed after the wick has been inserted therein by la plug 33 threaded therein.

The shaving device of the present invention is powered by an electric motor 35. The armature 36 of the motor has a' drive shaft or armature shaft projecting from' each end thereof. One end 31av of the shaft is adapted to be received in the bearing 29 in the collar and to project therethrough as shown in Figs. 1 and 2. The other end 31h of the shaft is supported in a bearing carried by a lug 40 extending transversely 'of the razor and secured to the other end of the base portion of the subframe by a pair of screws 4|. 'Ihe lug is provided with a central aperture 42 which, when the lug is secured to the base portion of the subframe, is in alignment with the bore in the collar, and has a metal sleeve 43 therein which carries a bearing 44 adapted to receive the end 31h of the armature shaft.

The lug not only supports the end of the shaft 'for rotation, but it also carries the vthrust of `in an aperture l in the sleeve 43. A wick 52 containing lubricant is disposed in the sleeve and held in contact with the bearing by a bushing 53.

In assembling the armature on the subframe, the end 31a of the armature shaft is inserted in the bearing 29iin the collar portion 26 of the subframe. The bearing 44 in the lug portion is then positioned over the end of the armature shaft and the lug is secured to the base portion of the y subframe. With thel lug secured in place, the

armature will be firmly held on the subframe.

y If desired, the bearings can be of the self-aligning type and thus greatly facilitate assembly of the motor and subframe.

In orderto make the ramr compact so that the handle portion thereof will not be vtoo large, several novel features have been employed in the motor. One of these features resides in the field structure for cooperating with the armature to complete the motor. In the preferred form of the invention, a field structure 55 is formed with a substantially U-shaped field piece, with the legs 56, 51 thereof extending longitudinally of the axis of the razor, and is provided with a eld coil 58 surrounding the bow 59 of the U. The field piece is located with respect to the subframe by a pair of locating pins 60 on the subframe and is secured in place by a pair of screws 5l. When the-field piece is so located and secured to The bearing 44 is made of,

the subframe, the legs of the U will be substantially parallel to the shaft of the armature, and the field coil will be disposed at one end of the motor instead of at the sides thereof as is in' the usual motor construction so that the motor has a minimum diameter.

Another feature of the motor which tends to reduce its diameter' resides in the novel commutator and brush-construction. Instead of having theusual cylindrical commutator with the radially extending brushes, the present preferred form of the invention employs a flat disk-shaped commutator 62 secured to the end 31a of the shaft by a bushing 62a of insulating material securedvto the commutator. The wires of the armature coils are connected to the commutator segments in the usual manner. A pair of brushes 63, cooperating with the flat face ofthe commutator, are disposed in .holders 63a positioned in pockets 64 and the collar portion of the subframe, as shown in Figs. 1 and 4, so as to extend parallel to the axis of the amature shaft,

With the armature and field thus rigidly mounted on the subframe, any strain set up by thevrotation of the motor will be carried by the subframe.

The subframe may be of any desired material, but preferably it is molded from Bakelite, or a similar hard molclable material, and the sleeves 28 and 43 are molded in the collar and lug at the time when they are made. l

The subframe of the present invention not only carries the motor but is adapted to have the cuttings means mounted thereon. As shown in Figs. 1 and 2, the drive shaft of the motor extends beyond the collar and is adapted to clrivey the cutting means of the razor. The cutting means of the present invention comprises a substantially truncate collarf 65 adapted to be threaded to the reduced end of the collar 26 of the subframe, and has an outwardly ared casing 66 secured to a reduced neck`portion 61 of the collar 65 so as to extend outwardly thereof and form a hollow casing surrounding the drive shaft.

The outer face of the hollow casing supports an outwardly projecting flange 68 of a thin cutter head 69 which is locked to the easing by a flanged ring 10, as clearly shown in Figs. l and 2.

The cutter head is provided with a plurality of hair-receiving apertures 1I, herein disclosed as radial slots extending through the face and side wall of the cutter head. 1

Within the cutter head is mounted a cutter blade 12 shaped so as to present cutting surfaces 13, 14 which cooperate with the slotsy in the cutter head to sever hairs extending therethrough upon relative rotation of the blade with respectl to the head. The cutter blade is coupled to the drive shaft for rotation therewith. In the preferred forni of the invention, the coupling means comprises a sleeve 15 adapted to fit over the end 31a of the armature shaft or drive shaft and extend into a recess 16 formed in the collar. The sleeve has a tight fit with the armature shaft, and is provided with a transverse wall 11 having a socket 18 formed therein to receive the end of the drive shaft. The end of the drive shaft is provided with flat sides 19 and the socket is correspondingly shaped so as to provide a positive drive connection between these two elements.

Upon rotation of the coupling sleeve, the cutter blade, which is mounted in an open transverse slot 15a in theupper end of the sleeve, will v the removable cutter headby a spring 80. order to prevent the cutter blade from becoming be driven through the engagement of the walls of the slot with the blade.

As is usual in razor constructions, the cutter blade is yieldngly urged into engagement with In separated from coupling member under the urge ofthe spring when the head is removed as in vided with a notch 85 in the upper surface thereof for receiving the portion 84.4

With the device of the present invention, when l the head is removed, the blade'will be moved until it engages the portion 84 and will be held in position on the coupling member. The end of the coupling member can be provided with notches 86, if desired, which will prevent the spring clip from rotating on the coupling member and will hold the portion 84 so that it wall always extend transversely of the blade.

It is to be understood that the spring clip will not in any way prevent the blade from moving into engagement with the cutter head for cooperation therewith and that the yielding clip can be readily manipulated, when desired, so that the blade will be released.

Also, as described and claimed in said copending application, means have been provided to prevent the blade from vunintentionally moving sideways and becoming disengaged from the coupling member. is slidably mounted in the bore in the coupling member and isdisposed between the spring 80 and the blade. As shown in Figs. 1 and 2, the member is received by a slot 9| in the undersur- A blade-engaging element 9|)y face of the blade. The element is of a diameter which is slightly smaller than the width of the slot in the blade, so that the blade, while held against slipping sideways out of the slot, is permitted a limited lateral movement whereby it can readily align itself with the cutter head so as to be in proper position with relation to the slots therein to cooperate therewith to sever hairs extending through the slots.

I'he subframe and motor mounted thereon are completely enclosed by the casing 2|. In the preferred form of the invention, the casing is made up of two parts ,95, 96. The part 95 is 'secured to the subfrarne by a screw 91 extending through the base portion thereof and into -the lug 40. 'Ihe part 96 is secured `to the subframe by a screw 98 threaded into the bushing 53 secured to the end of the lug 40. Thus the lug, in addition to serving as a mounting for the end of the armature shaft, forms a connector for the two parts of the casing and reinforces the casing intermediate the length thereof against compressicnal strains.

The two sections have their adjoining surfaces formed with interfitting parts as shown in Figs. 4 and 13 andindicated at |00. This forms a dustproof cover and also holds the parts in register. A plurality of projecting guides |0| and I0|a are carried by the sections 95. The guides |0l I lay in slots in the surface of the subframe as shown in Fig. 1 and are received by the section 96. The guides |0|a are received in pockets ||1 of section 96 as shown in Fig. 16. The guides |0| |0|a and associated elements aid in the proper assembling of the casing.

The section 96 of the casing is provided with a pair of blocks |02, one of which is shown in Fig. 4, which are adapted, when the section is in place, to lit into and close the pockets 64 in the collar portion of the subframe in which the brushes 63 for the commutator are located as shown in Fig. 14.

The two sections 95, 96 are provided at their upper ends with an inwardly projecting flange |03 which snugly engages a shoulder |04 formed on the collar 26 adjacent the collar 65.

To prevent the parts of the casing from separating, a ring |05 is disposed about the outside surface thereof. Preferably, this ring has a ilange |06 and is disposed over the `flanged end of the casing and is clamped in place by the truncated 'collar 65 of the cutting member, when the latter is threaded on the end of the collar 26 on the subframe.

A switch means of the type described in copending application Serial No. 208,512, led May 18, 1938, is rotatably mounted in suitable grooves |01 in the casing. The switch broadly has a pair of contacts |08 which are movable into engagement with a pair of contacts |09 carried by a fixed contact plate ||0 and completes the circuit to the motor, one of the fixed contacts being corinected to the field coil 58, which is connected to one of the brushes by a conductor Ill, and the other fixed contact is connected to a conductor 'H2 from the other brush, as shown in Fig. l.

The switch has an actuator ||4 which projects from the end of the casing and serves to control unit as a whole can then be inserted into the casing. This is advantageous inasmuch as the moldable casing, when used as a foundation for assembling the moving parts of the razor, often becomes cracked and broken during the assembling operation.

The subframe not only serves as a base for the assembling of the unit, but also serves to reinforce the handle against compressional strains.

Variations and modifications may be made within the scope of this invention and portions of the improvements may be used without others.

I claim:

1. In a portable motor driven device, a drive motor; a subframe for supporting the motor; a multipart casing secured to the subframe and enclosing the same; and a locking ring engaging the outer surface of the multipart casing to hold the sections of the casing against separation.

face of the disk commutator and extending parallel to the longitudinal axis of the casing.

3. In a portable motor driven device, a skeleton frame having a base portion provided with an integral collar at one end of the base portion and a removable lug at the other end; coaxial bearings in the lug and collar; and a motor mounted on the frame, said motor having an armature shaft mounted in the bearings and a field structure mounted on the base portion on the frame.

4. In a portable tool having a driving motor therein; a skeleton frame supporting the armature and field of the motor in fixed relative positions; a casing enclosing the skeleton frame; a tool secured to one end of the skeleton frame and exposedexteriorly at one end of the casing; and a switch means for controlling the motor held in place by the casing.

5. In a portable motor driven device, a skeleton frame having a base portion provided with an integral collar at one end of the base portion and a removable lug at the other end; coaxialbearings in the lug and collar; and a motor mounted on the frame, said motor having an armature shaft, the opposite ends of which are mounted in the bearings, the one end of the shaft extending beyond the end of the collar and forming a toolcarrying member. l

6. In a portable motor driven device, a drive motor; a skeleton frame supporting the armature and field of said motor in fixed relative positions; a multipart casing enclosing the skeleface of the multipart casing; and a tool secured `to one end of the skeleton frame and locking the flanged ring in place.

7; In a portable motor driven device, a skeleton frame having a base portion provided with a collar at one end; an axial bearing in the collar; an armature lhaving a shaft, one end of the shaft| being. disposed in the bearing in the collar; a lug having a bearing' therein secured to the otherA end of the base portion with the vbearings in alignment with the bearing in the collar and receiving the other end of the armature shaft; and a field structure secured to the base portion of the frame and extending into cooperative relation with the armature.

8. In a portable motor driven device, a skeleton frame having a base portion provided with a co1- lar at one end; an axial bearing in the collar; an

armature having a shaft, one end of the shaft being disposed in the bearing in the collar; a lug having a bearing therein secured to the other end of the base portion with the bearing in aligni ment with the bearing in the collar and receiving the other end of the armature shaft; a. fieldv having a bearing therein secured to the other trolling the motor comprising said amature and of the frame and extending into cooperative relav tion with the armature.

1l. In a portable motor driven device, a skele-v ton frame having a base portion provided with a collar at one'end; an axial bearing in the collar;

. ton frame; a flanged ring engaging the outer surend of the base portion with the bearing in alignment with the bearing in the collar and receiving the other end of the armature shaft; a field structure secured to the base portion of the frame and extending into cooperative relation with the armature; a two-part casing secured to the skeleton frame and enclosing the same; and a switch rotatably carried by the two-part casing for conan armaturehaving a shaft, one end of the shaft being disposed in the bearing in the collar; a lug having a thrust bearing therein secured to the other end of the base portion with the thrust bearing in alignment with the bearing in the collar and supporting the other end of the shaft; and a eld structure secured to the base portion of the frame and extending into cooperative relation with the armature.

l12. In a portable motor driven device, a drive motor; a subframe, said drive motor being secured to and supported by the subframe; and a multipart casing surrounding the subframe and having means on at least one part thereof engageable with cooperating means on the other part thereof for guiding the parts during assembly and preventing relative movement between said parts, said means also engaging the subframe to guide the casing into proper position therewith during assembly.

13. In a portable motor driven device, a motor; a shaft driven by said motor; a subframe for supporting the motor and having an integral collar projecting at one end thereof; an axial bearing fixed in said collar and supporting' one end of said shaft; a bearing secured tothe opposite end of said subframe 'and supporting the other end of said shaft; a multipart casing enclosing the subframe; and a tool head secured to said projectingA collar. f

14. In a portable motor driven device, a motor; a shaft driven by said motor; a subframe for supporting the motor'having a threaded collar projecting from one end thereof; an axial bearing fixed in said collar and supporting one end of 'said shaft; a bearing secured to the opposite end of said subfrarne and supporting the other vend of said shaft; "a multipart casing enclosing 15. In a portable motor driven device, a motor; 'i

a shaft driven by said motor; a subframe for supporting the motor and having an integral collar projecting at one end thereof; an axial bearing fixed in said collar and supporting one end of said shaft; a bearing secured to the opposite end of said subir-ame Aand supporting the other end of said shaft; a Vmultipart casing enclosing the subfrarne; a' flanged ring circumscribing the multipart casing and having a portion engaging the outer surface thereof; and a tool head secured to said projecting collar andlocking the flanged ring in place.

16. In a portable motor driven device, a motor; a subframe supporting the armature and field structure of said motor in fixed relative position; a threaded collar projecting from one end of the v collar oi the frame for locking the anged ring in place, said head cooperating with a tool secured to the end of the shaft supported by said bearing. v

i7. In a portable motor driven device. a subframe provided with an integral collar at one end thereof; a removable lug disposed at the other end of said frame; coaxial bearings carried by the lug and collar; a motor mounted on said frame having an armature shaft. the op-v posite ends o! which are supported by said bearings; a two-part casing surrounding said trame and enclosing the same and said motor; and means for securing the two parts of the casing together about said frame, saidv means including screws threaded into opposite sides of said lug.

JOSEPH YOUHOUBE.

Images