US1230717A - Razor-sharpening device. - Google Patents

Description

F. J. KALTEY'ER.

RAZOR SHARPENIN'G DEVICE. APPLICATION FILED MAR. I6. IsIs.

UNITED STATES FREDERICK J. KALTEYER, F PHILADELPHIA, PENNSYLVANIA.

RAZOR-SHARPENING DEVICE.

Specification of Letters Patent.

Patented June 19, 1917.

Application led March 16, 1916. Serial No. 84,569.

To all whom it 'may concern.'

Be it known that l, Frisur-mien J. KaL- Tarsu, a citizen of the United States, residing in the city and county of Philadelphia,

l adapted to be employed to sharpen the blades of the old fashioned razors and also to sharpen the blades of safety razors or any type of removable razor blade.

It further consists of a novel construction of a razor sharpening device in which a `blade holder is provided with a resilient shank vWhich is pivotally mounted to provide both a rocking adjustment and an adjustment to and from the sharpening rolls in a longitudinal plane between the rolls so that the position of the blade with reference to a roll may be varied and also its resistance to fieXure.

Other novel features of construction and advantage will hereinafter more clearly appear in the detailed description of my invention.

For the purpose of illustrating my invention, I have shown in the accompanying a typical embodiment which will give satisfactory and reliable results in practice, but it is of course to be understood that Y such embodiment is typical only and' that the various instrumentalities of which my invention consists can be variously arranged and organized, and that my invention is not limited to the :precise arrangement and organization of these instrumentalities as herein shown and described. v

Figure 1 represents a perspective view of a razor sharpening device embodying my invention. Y Y e Fig. 2 represents an end elevation of Fig. certain partsnbeing shown in section. Fig. .3 represents a side elevation, partly in ection, ofa portion of my device.

certain arts ofthe device, .showing them in a di erent relation with respect to each other from that seen in1Fig. 2.

4 represents an end'` elevation ofv Fig. 5 represents a diagrammatical view of the automatic stop, mechanism of the motor.

Similar numerals of reference indica-te corresponding 'parts in the figures.

Referring to the drawings 1 designates a base or support, upon which is mounted, in any desired manner, a motor 2, which for purposes of illustration. I have shown as consisting of an electric motor having the conductors 3 and 4:- connected With the battery 5 or other Source of electrical supply. 6 designates the motor shaft on which is mounted the pinion 7, which meshes with a gear S mounted on a'shaft 9, and said gear 8 meshes with a gear 10 mounted on a shaft 11. The stationary shafts 9 and 11 have their inner ends fixed in any desired manner on the casing of the motor 2, and arie arranged` parallel with respect to each ot er.

A The gear 8 is fixed to a roll 12 loosely I mounted on the shaft 9, and retained thereon by means of a set collar 13, which is secured to the shaft, in the present instance, by means of a pin 14 passing through the collar 13 and the shaft 9. A portion of the periphery of the roll 12 is cut away, as indicated at 15, so as to form a shoulder 16. 17 deslgnates a strip of leather or other suitable material which has been properly Atreated to form a surface which will have a sharpening effect on the blade with which it comes in contact, and as will be apparent, either a grinding or a stropping surface may be provided.

The strip of material 17 extends from the shoulder 16 to the point 18. 19 designates a roll to which the gearlO is fixed, and said roll conforms in construction and contour to the roll 12 and is mounted on the shaft 11, a set collar 2O being employed to retain the roll 19 on the shaft 11.. .A 21 designates a strip of leather or other. sui-table material secured to the periphery ofthe Aroll 19 and conforming in construction and contour to the strip of material 17 on the roll 12.

22 designates a threaded rod fixed to the casing of the motor Y2 and extending through the slot 23 of the flange or anglearm 24 of a bracket 25, and in order to maintain the gages thethreads of the rod 22. The bracket 25V comprises an arm which extends for- ,bracket 25 in its vertically adjusted position, a thumb nut 26 is provided which enwardly and which is provided at its forward end with a threaded rod 27 having the thumb nut 28. The rod 27 passes through the slot 29 in a blade holder or clamping device 30, which consists of a resilient arm 31 which carries at its lower end the clamping jaws 32 and 33. As illustrated, the jaws are formed by slotting the lower end of the blade holder in order to provide two yielding clamping jaws.

A bolt 34 passes through the jaws and has a threaded end with which a thumb nut 35 engages in order that the jaws may b'e opened or closed, as desired. The inner face of the jaw 32 is lreversely inclined, or in other words, the lowerportion inclined upwardly and outwardly, as seen at 36, and then inclines upwardly and inwardly, as seen at 37, and then extends vertically upwardly, as indicated at 38, (see Fig. 1). The inner face of the jaw 33 is constructed in a similar manner to the inner face of the jaw 32, and a detailed description thereof is therefore thought to be unnecessary. One of the shafts 9 or 11, for example, the Shaft 9, has loosely mounted thereon a gear 39 i fixed to the gear 8 and having a single tooth to engage the pins of a gear 40l suitably mounted and having a single tooth to engage the pins of a gear 41 suitably mounted. The

gear 41 has a tooth to engage the actuating lever 42 of a switch 43 which automatically shuts oif the current from the source of electric supply to the motor after a predetermined number of revolutions has been made by the motor. j

It will, of course, be understood thatthis automatic stop mechanism may be dispensed with, if desired, and it is not necessary to employ it in all cases arising in practice. When the sharpening rolls are in the position seen in Fig. 4, the razor to be sharpened is not in Contact with either sharpening roll.

lIn the operation, the blade to be sharpened is clamped between the jaws 32 and 33 b'y proper adjustment of the thumb nut 35. The switch 42 is now actuated in the proper direction to close it, and the motor 2 causes the rolls 12 and 19 to rotate in the direction of the arrows seen in Fig. 2, so that the blade is alternately engaged on opposite sides by the sharpening elements, it being seen that one has the lead on the other. The parts are constructed in such a manner that the blade will be yieldingly pressed against the sharpening surface, due to the resiliency of the arm 31, as will be understood by reference to Fig. 2. l

The blade holder is rigidly supported, but owing tothe vprovision of the spring arm 31, it will be maintained against the sharpening elements under the proper tension. This tension can he adjusted, as is apparent, by pro er actuation of the thumb nut 28 and vertice adjustment of the blade holder 30,

and by the vertical adjustment of the bracket 25, the machine can be adjusted to receive razor blades of diii'erent widths. If it is desired to use different types ofsharpening rolls, for example, to substitute `a roll having'a stropping surfae for one having an abrasive or honing surface, it is simply necessary to remove the set collars and insert the rolls to be substituted into position and secure them in position by the set collars.

It will be seen from the drawings that the blade holding device is normally positioned in such a manner that the cutting edge of the blade to be sharpened is substantially midway between the shafts 9 and 11. The sharpening surface of the rolls is formed on a radius greater than one-half the distance between the centers of the rolls, and the curvature of the sharpening surface at its end is on a gradually decreasing radius so that the blade returns to its normal neutral position after leaving the sharpening surface without any material vibration;

It will now be apparent that Ihave devised a novel and useful razor sharpening device which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described a preferred embodiment thereof which will give in practice -satisfactory and reliable results, it is to be understood that the same is susceptible of modication in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a razor sharpening machine, the combination of parallel rotatable sharpening rolls, a bracket arm, and a blade holder having a resilient shank pivotally mounted on the arm to have both a rockin adjustment and an adjustment to and om the rolls in a longitudinal plane passing between the rolls, whereby both the position of the blade with reference to a roll and its resistance to flexure may be varied.

2. In a razor sharpening machine, the combination of parallel rotatable sharpening rolls, a bracket arm adjustable to and from the rolls in a plane passing longitudi- Inally between them, and `a-blade holder having a resilient shank pivotally mounted on the arm to have both a rocking adjustment and an ladjustment to and from the rolls in said longitudinal-plane,'whereby both the position of the blade with reference to a roll and its resistance to iieXure may be varied.

3. In a razor sharpening machine, the combination of parallel rotatable sharpening rolls, a pivoted bracket arm adjustable to and from the rolls in a plane passing longi- 13e on the al1-into have bot-h a lockingvadjustment and an adjustment vto and from the rolls in said longitudinal plane, whereby both the position of the binde with reference to a roll und its resistance to flexure may be varied.

FREDERICK J. IQALTEYER.

' Witnesses:

H. S. FAIRBANKS, C.' D. MCVAY.

Copies f this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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