US1269831A - Razor-sharpening machine. - Google Patents

Description

R. C. McCALEB.

RAZOR SHARPENING MACHINE.

APPLICATION men nzczzs, 191s.

Patented June 118, 19158x 2 SHEETSSHEET l.

Attorneys R. C. McCALEB.

RAZOR SHARPENING MACHINE. APPLICATION FILED DEC.26. I916.

2 SHEETS-SHEET 2.

Witnesses All Attorneys Patented June 18, M18.

TtUhlERT COLIFAX MOGMEB, 01? CHICAGO, ILLTN 01S.

RAfiOm-SHARPENTNG- MACHINE.

naeaaai.

Specification or Eetters Patent.

Patented dnne 1a, 121%.

Application filed December as, rare. sen-a1 no. reacts.

To all whom a may concern."

lie it known that 1, ROBERT C. MCCALEB, a citizen of the United States, residing at Chicago, in the county of Cook and State of lllinois, have invented a new and useful Razor-Sharpening Machine, of which the following is a specification.

' The device forming the subject matter of this application is adapted to be employed for sharpening razors, and one object of the invention is to provide novel means whereby rotation is imparted from one of the stropping rolls to the other.

Another object of the invention is to provide novel means for moving the blade holder so that it will cooperate successively with the respective rolls.

llt is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects inview which will appear as the description proceeds. the invention resides in the combi nation and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings Figure 1 shows in top plan, a sharpening machine constructed in accordance with the present invention;

Fig. 2 is a side elevation of the structure I shown in lFig. 1;

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Fig. 3 is an end elevation;

Fig. 1 is an elevation showing the opposite end of the structure from that delineated in Fig. 3;

ll ig. 5 is a section onthe line 5-5 of ri a.

Fig. 6 is a cross section taken through the machine.

Tn the drawings ,the numeral 1 indicates a base plate on which are erected standards 2 and 3. The base plate 1 carries, for the purpose of illumination, a lamp 28. Disposed he'tween the standards 2 and 3 are tapered rollers 1 provided with spiral sharpening bands whichmay be made of leather or. any suitable material adapted to have. a stropping action on the blades. The spiral bands 5 mesh into each other, and-the bands, therefore, constitute not only a sharpening means, but means whereby rotation may be imparted from one of the rollers 4: to the other, when one roller is rotated. At their wider ends, the rollers 1 are circumscribed by friction bands 6 which engage each other. The friction bands 6 may be made of rubber or a like material. The friction bands constitute a means, independent of the spiral bands 5, whereby one roller may be rotated from the other. The rollers 4 are mounted on shafts 7 journaled in the standards 2 and 3.

Erected on the base plate 1 near to the standard 2 is a supplemental bearing 8 carrying a stub shaft 9 on which -is journaled a wheel 10 provided with a friction facing 11 engaging the friction band 6 of one of the rollers 4. The wheel 10 carries a pin 12 mounted to move in a slot 1 1 fashioned in an upright arm 15 f'ulcrumed intermediate its ends as shown at 16 on the standard 2. A similar arm 17 is fulcrumed on the standard 3, the arm 17 being considerably shorter than the arm 15, in view of the fact that an actuating means, repre sented by the wheel 10 and attendant parts, is operatively connected with the arm 15, Whereas nosuch actuating means is connected with the arm 17. The arms 15 and 17 are connected by a blade holder 18 of any desired construction. The blade holder 18 operates between the tapered rollers 1;.

A tank 19 is mounted on the base plate 1 adjacent the standard 3. The shafts 7 of the rollers 4 project through the tank 19, and the shaft of one roller may be supplied with a crank 20, whereby the said roller may be rotated. It is not necessary, however, that the rollers be hand actuated, and any mechanical equivalent for the crank 20 may be substituted, whereby the device may be driven from a motor. Extended part way across the tank 19 horizontally is a partition 21 provided at its ends with upright supports .22 which project toward grinding rolls 25 secured to the shafts 7 and located within the tank 19. The tank 19 contains a quantity of water indicated at 23. The lower ends of wicks 241 dip into the water. The wicks 21 pass upwardly between the supports 22 and the walls of the tank 19 and rest on or overhang the grinding rolls 25. Tn the end wall of the tank 19 there is an opening 26 disposed above'the partition 21. The numeral 27 denotes a razor which may be thrust through the opening 26 on topof bands onthe wider ends of the rollers engage with each other. From the friction band 6 of one of the rollers 4, rotation will be imparted to the wheel 10. When the wheel 10 is rotated, the pin 12 in the wheel moves in an orbit and, cooperating with the slot 14 in the arm 15, imparts a rocking or swinging movement to the said arm, on its fulcrum 16, the blade holder 18 which is carried by the arms 15 and 17, being swung first toward one of the tapered rollers 4, and thentoward the other of the tapered rollers. The blade which is carried by the holder 18, therefore, is presented alternately to the rollers 4. It is to be observed that the rollers exert a downward action on the blade in the holder 18, thereby stropping the blade. It is to be understood that a blade-carrying means of any kind may be assembled with the holder 18, so that the device can be used to sharpen safety razor blades of any kind. I am aware of the fact a specific blade holding means, adapted to retain a safety razor blade cannot be claimed in the same application with the sharpening mechanism herein-disclosed, and therefore I have shown or described no specific means whereby safety razor blades may be assembled with the holder 18. v

When it is desired to grind a razor blade, the blade, indicated at 27, is pushed inwardly through the opening 26 in the outer end wall of the tank 19. The ed e of the blade then is engaged by the grin ing rolls 25, these rolls exerting a downward grinding action on the blade. The water 23 in the tank 19 is absorbed by the wicks 24 and is delivered onto-the grinding rolls 25, in a manner which will be obvious from Fig. 5.

The blade holder 18 is disposed parallel to the line of contact between the rollers 4, and, since the rollers 4 taper, the abrasive surfaces of the rollers engage the blade in the holder 18 at a slight slant, giving a slant sharpening stroke to the blade and imparting the necessary fine and microscopic saw edge to the blade. 7

Having thus described the invention, what is claimed is 1. In a device of the class described, a supporting structure; a pair of tapered rollers Journaled 0n the supporting structure to rotate in contact, and provided with intermeshing spiral abrading elements; and a blade holder mounted between the rollers to swing in a direction transverse to the axes of the rollers, the blade holder being disposed in the plane of the line of contact between the tapered rollers.

'2. In a device of the class described, a base; standards mounted on the base; arms mounted to swing on the standards; a blade holder connected with the upper ends of the arms and operating between the rollers; interengaged friction members on the rollers; a supplemental bearing upstanding from the base; a friction wheel journaled on the bearing and engaging the friction member of one of the rollers; a projection on the wheel, the lower end of one of the arms being provided with a slot wherein the projection is slidably received; and means for rotating one of the rollers.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

ROBERT COLFAX MCCALEB.

Witnesses W. Loser, FRED BEATY.

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