US1127409A - Rotary safety-razor. - Google Patents

Description

G. B. UGLLINS.

ROTARY SAFETY RAZOR.

APPLICATION FILED HAYS, 1914.

2 SHBETSSHEET 1.

Patented Feb. 9, 1915.

G. B. COLLINS.

ROTARY SAFETY RAZOR.

APPLICATION FILED MAY 9, 1914.

Patented Feb. 9, 1915.

2 SHBETSSHEET 2.

12a Q/ha UNITED STATES PATENT OFFICE.

CAP BEBL'IBAND COLLINS, OF DES MOINES, IOWA.

ROTARY SAFETY -RAZOB.

ful Improvements in Rotary Safety-Razors,

of which the following is a specification.

. This invention relates to improvements in rotary safety razors, and one of the objects of the same is to provide an improved selfcontained motor propelled device of this character having a rotary circular blade.

.-A further object is to provide an improved device of this character having a blade of disk shape provided with a continuous non-serrated cutting edge, and a guard for the blade.

A further object is to provide improved means for controlling the operation of the blade.

To the attainment of these ends, and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty'in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrating the invention, and in which Figure 1 is a top plan view of an improved device of this character, constructed in accordance with the principles of this invention. Fig. 2 is a side elevation of Fig. 1. Fig. 3 is a sectional view taken on line 3-3, Fig. 2. Fig. 4 is a sectional view taken on line 4--4, Fig. 5. Fig. 5. is a vertical sectional view taken on line 55. Fig. 2. Fig. 6 is a sectional view taken on line 6-6, Fig. 5.

Referring more particularly to the drawings and in the present exemplification of this invention, the numeral 10 designates generally a casing or housing of any desired size and configuration, preferably of a size and shape to fit the hand and by means of which the device may be manipulated.

The housing is preferably constructed in sections and connected with one section by means of a reduced portion 11 is a guard 12, of circular configuration having sfiaced peripheral teeth. The guard is s aped to form a recess or chamber 13 for a purpose r'to be hereinafter set forth and the reduced portion 11 between the guard and the casing is tubular for the reception of a hollow shaft 14. Passing through the hollow shaft 14,

specification of letters Patent.

Patented Feb. 9, 191 5 Application filed m a, 1914. Serial No. 837.415.

which extends beyond the guard and, i

wheel or element 18, that is ,adaptedto. r05 tate with the shaft 15. o The cutting blade 19 is in the. form of a disk and is connected to the shaft.1 5. to.

rotate therewith preferably through theme-I dium of the element 18, which latter; may be provided with a. stud 20 adapted .toenter a recess in the blade, and the blade together with the element 18 are secured to the shaft 2'."

15 preferably by means of a nut or collar.

21 which has a threaded engagement with,

the extremity of the shaft 15 and serves to clamp the blade between the element-21 and the element 18. Obviously the blade 19 is of a diameter slightly less than the diam.

eter of the guard.

Arranged within the casing 10 is a spring barrel 22 which is mounted loosely upon the:

hollow shaft 14, the latter being mounted loosely upon the shaft 15. Inclosed with '2':

the spring barrel 22 is a spring 23 which is:

anchored as at 24 to the hollow. shaft 14 and is also anchored as at 25 to the barrel 2:2.

A portion of this barrelis shaped to I form an internal toothed gear 26 with which v I a pinion 27 meshes and which pinion is connected with a gear 28 for rotation therewith, the latter being journaled upon a stub.

shaft 29 preferably supported by. one of I the members of the casing. Connected with the shaft 15, to rotate therewith isa gem 30 which meshes with the gear 28 and connected with the gear 30 to rotate therewith is a gear 31. the latter meshing with a gear 32 which is connected with a fan or governor 33, the fan or governor and the gear 32 being rotatably mountedupon a'stub shaft 34 also connected with one of the sections of, the

casing'10. Connected with the shaft 14 for rotation therewith is a ratchet element 35 V and mounted upon a support 36. carried by the other section of the casing 10 is a dog or pawl 37 which cooperates with the ratchet element 35. The sections of the casing 10 are preferably removably secured together by means of a threaded connection 38. so as to permit ready access to the interior of the casing.

In use. the spring 23 is wound by holding one hand against the blade and the fastening device 21 hold it against rotation, and then rotating the casing 10 by the other hand. This will cause, the spring 23 to be wound, and the pawl and ratchet elements V 5 .35, 37mwil-l 'lock' them against retrograde -As the; spring 23 unwinds, the

- circular motor casing, said casing constituting a housing, a stem projecting from and 65 movement. "springbarrel. andthe, gear'26 will be.-- tated, and this in turn will rotate the pinion "37 and the gear 28, and the gear 28 mesh- 10 ing'with the gear 30. which is secured to the shaft 15, will rotate the blade 19, the dem the [casing 10. The unwinding movement offthespring is retarded by the governor 33 i \vhichis connected with the ge r 31 through themedium of the pinion 2 .7 Thus it will be manifest that while the blade is being rotated, the user may manipulate the razor in the manner in which all safety razors are operated, thereby giving a shearing action to the blade, as well as the ordinary move ment which will be imparted to the blade by thehand of the operator.

In order to control the rotation of the blade, a stop device is provided whichco operates with the toothed element 18. This stop device preferably comprises a shiftable member 39 provided with an annular central portion 40 which surrounds the outside of the recess 13 of the guard, and the extremities of the annular member are extended as at il, l2 and are provided with projections 43, 44. The annular portion 40 V is rovided with 'a tooth or projection 45 which is adapted to be moved into and out of engagement with the teeth of the element 18, and the shifting device may be supported by means of pin'and slot connections 46, 47. Thus when it is desired to permit the spring 40 to rotate the blade, the stop device is shifted by the finger of the operator by engaging'the projection 43 to move the projection out of engagement with the teeth of the elementIS, and when it is desired to stop 45 the blade, the device is shifted in the opposite direction by the finger of the operator vi'c'efbeing held in the hand by means of a Moe bination and arrangement of the several parts without departing from the spirit 'of this invention.

. What 1s claimed asnew is 1. Aself-contained deviceof the character described, embodying a substantially flat arranged perpendicularly to one of the walls of the casing, a guard connected with the stem and disposed adjacent the casing, a driving shaft extending from the casing and through the said stem, a blade detachably connected with the shaft and disposed adjacent the guard, a stop device adjustably supported by the guard, said stem provided with a lateral opening therethrough adjacent the guard, a portion of'said stop device projecting through said opening, and 1 means on the shaft with which the said portion of the stop device coo erates.

2. A self contained razor. o the character described, embodying a motor propelled '80 rotatable disk shaped blade, a guard for T the cutting edge of-the blade, said guard having a chamber therein, an element disposed within the chainber, and rotatable with the blade, and means cooperating with the said element for controlling the operation of the motor.

3. A self contained razor of-the character described, embodying a motor propelled rotatableidisk shaped blade, a guard for the cuttingedge of the blade, said guard having a chamber therein, a rotatable toothed eleinent disposed within the chamber and connected with the motor, and an element shiftable into andout of engagement with the toothed element for controllingthe motor.

i. A self contained razor-of the character described, embodying a motor propelled rotatable disk shaped blade, a guard for the cutting edge of the blade, said'guard having a chamber thereimn rotatable ele-' ment disposed within the chamber, and connected with the motor, and an element supported by the said guard, and movable into and out of operative relation with the said 105 element for controlling the operation of the motor.

In witnesswhereof, I hereunto subscribe mv name to this specification in the, presence of two witnesses.

' GAP BERTRAND COLLINS. Witnesses: WM. BREYETI'E,

P. A. S. SMITH.

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