US1925772A - Device for sharpening razor blades - Google Patents

Description

J. A. MORRECE DEVICE FOR SHARPENING RAZ OR BLADES Sept. 5, 1933.

3 Sheets-Sheet Filed Dec. 14, 1931 INVENTOR JA. M0 R1025 [TORNEI' DEVICE FOR SHARPENING RAZOR BLADES Filed Dec. 1 4, 19:51 5 Sheets-Sheet 2 J'NVENTOK J A M 022105 ATTORNEY Sept. 5, 1933. J. A. MORRICEV 1,925,772

DEVICE FOR SHARPENING RAZOR BLADES Filed Dec. 14, 1951 3 Sheets-Sheet 3 f w 47 i .J {5 K ;4 Q M w J5, L-i K j H;

INVENTOR J A. MoRRlcz' AT T ORA L V Patented Sept. 5, 1933 p v f i V- f unirso STATES PATENT oFFIcs DEVICE FOR SHARPENING RAZOR BLADES James Anderson Morrice, Dowanhill, Glasgow,

Scotland Application December 14, 1931, Serial No. 580,964, and in Great Britain December 17, 1930 i 2 Claims. (01. 51-80) This invention relates to a device for sharpenrial, such, for instance, as that commercially ing or stropping razor blades and 'the'like, the known under the registered trade-mark bakedevice being of the kind comprising an upper lite, or similar material. As shown, in Figures roller and a lower roller located within a box 1 and 2, the end of the lid opposite to that which having a hinged or removable lid, the upper is hinged or pivoted to the box is provided with, roller being mounted relatively to the said. lid, an extension or tongue piece 3 adapted to enter the said rollers being adapted to" operate on a correspondingly shaped recess 3 in the box, both sides of the blade of a safety razor while the said tongue piece secured within the recess connected to the razor head or frame. by means of spring-pressed balls 3 carried by The chief object of the invention is to provide the tongue piece and engaging cavities 3 in the 65 In order that the said invention may be clearly acted upon by the rollers 4 and 5, the lid 3 being 7 an improved and efficient constructional'form of box. device of the ahovementioned character. Mounted within the box is a lower roller 4 According to this invention, there is provided and mounted within the lid is an, upper roller a device of the kind above referred to, wherein 5, the axes of the said rollers being disposed 1 the upper and lower rollers are formed with heliparallel. to the axis of the'lid. The said rollers g0 cal grooves adapted to act on both sides of the may be rigidly or yieldably mounted, or one roller blade at the edge thereof, such edge when being may be rigidly mounted and the other yieldably acted upon lying substantially in alignment with ,mounted, according to requirements, the said the axes of the rollers, the rollers being provided rollers being adapted to operate on both sides 20 with gear wheels, a gear wheel or "wheels assoof the blade 6 .of a safety razor 7, indicated by ciated with the upper roller being adapted to be broken lines in Figures 1 and 2; while connected 7 brought into engagement with a gear wheel or to the razorhead or frame. The box 1 is shown Wheels associated with thebottom roller when the formed with integral rests or seatings 8 to locate lid of the box is closed. the razor in position when the blade is being 80 understood and readily. carried into effect, the also shown provided with integral portions 9 same will now be described more fully, by way of adapted to assist in retaining the razor in 13051- xample, with reference to the accompanying tion when the lid is closed. drawings, illWhlChi- F The rollers 4 and 5 'may be operated by any 09 Figure 1 is a longitudinal vertical sectional suitable gearing, which may be friction gearing, view on a slightly enlarged scale, of a device emif desired. In the example shown, the said rollbodying the invention; cm are provided with toothed spur wheels 10 Figure 2 is a top plan view corresponding to and 11, respectively, adapted to mesh with one Figure l, with the lid of the box opened; another when the lid of the box is closed. The Figure 3 is a fragmentary longitudinal secaxle of the roller 4 is provided with a toothed tional view taken approximately 011 theline 33, pinion 12 operable through van intermediate Figure 2; g I toothed pinion 13 from a toothed spur wheel 14 Figure lis a fragmentary transverse sectional secured to a shaft 15 having associated thereview, on a further enlarged scale, showing the with a clutch member 16 adapted to be engaged, a5 driving clutch andrelative connections; under the action of a spring 17, with another Figure 5 is a sectional side elevation showing clutch member 18 connected, for instance, to the a modified form of roller; boss of a rotatable crank handle 19 located ex- Figure 6 is a similar view to Figurev 5,. showteriorly of the box and pivotally jointed, as at ing a further modified formof'roller; H 20, so as to permit the handle to be folded in Figure 7 is a fragmentary longitudinal sectional known manner and occupy a position at the side view thereof; of the box, as indicated by broken lines in Fig- Figure 8 is a similar view to Figure 7, showing ure 2, when in inoperative position, the crank another modified form of roller; -21 of the handle then engaging with a hole at Figures 9 and lOare also similar views'to Figthe side of the device at the parting between the ure 7, showing further modified forms of rollers. box and the lid, the hole being formed partly Referring first more particularlyto Figures 1 in the box at 22 and partly in the lid at 22', so to 4 of the drawings, the device comprises a box as to retain the handle in such position, or en- 1 having hinged or pivotally connected thereto, gaging witha hole in the lid 3 which will act, as as at 2, a lid 3, the said box and lid being prefa catcher a fastener to retain the lid in closed erably each moulded from a composition mateposition. The said clutch members 16 and 18 are constructed and arranged in known manner so that the lower roller 4 can be driven only in one direction. The gearing for operating the lower and upper rollers 4 and 5 is arranged relatively to a casing 23 located within the box 1 at one side thereof and is so designed in the example shownthat the said rollers are rotated in the desired direction by imparting rotary movement to the handle 19 in clockwise direction.

The rollers 4 and 5 are each formed with a single helical groove 24, which may be of right or left hand pitch, as desired, the groove on each roller being of the same hand, as shown, but may be of different hand. Also, if desired, each roller may be formed with helical grooves of right and left hand pitch. The pitch can be determined according to requirements. The rollers, in the example shown, may be made of a relatively hard material, such as metal, or a composition, such, for instance, as bakelite, as aforesaid, or similar material, the grooves in that event being each provided with a helical strip 25 of leather, rubber, or other compressible material, which may extend entirely, as shown, across the width of the groove, or may extend partially across the groove, and project beyond the periphery of the roller so as to serve normally to effect, for ex ample, the stropping of the blade to be dealt with. When the strip is worn so as to be flush,

or approximately flush, with the periphery of the roller, the blade will then be subjected to the action of both the strip and the roller, so that, for example, a combined stropping and sharpening or honing of the blade may be effected.

Alternatively, as in the example shown in Figure 5, each of the rollers may be formed of leather, rubber or the like and the helical groove 24 therein may be provided with a strip 26 of metal, glass or any other relatively hard material, which is normally disposed below the periphery of the roller, so that the periphery of the roller may normally effect, for example, the stropping of the blade, but when worn so as to be flush, or approximately flush, with the strip 26 of hard material, a combined stropping and sharpening or honing of the blade may be effected.

In a further modification shown in Figures 6 and '7, each roller, preferably made of bakelite, or similar material, may be provided at the periphery adjacent to one Wall of the helical groove 24, with a slightly raised helical portion 27 to act on the edge of the blade being dealt with, so as to remove, for instance, any burr that may be formed at the edge of the blade. If desired, the said wall may be undercut, as shown in Figure 8. In a still further modification, shown in Figure 9, a helical strip 25 of leather or other suitable material, such as aforesaid, may extend partially across the groove 24 in the roller and project slightly beyond the periphery of the raised helical portion 27, or, as shown in Figure 10, may be flush with the periphery of the said raised helical portion.

What I claim is:--

l. A device for sharpening razor blades comprising a box adapted to house a razor having a blade attached thereto, means in said box for supporting the razor, said means including two upright nembers to cooperate with and support the handle and frame of the razor, a lid hinged to said box and adapted to fold thereon when the device is in operation, a member carried by the lid and formed with a recess to receive and support the guard of the razor, sharpening rolls in both box and lid engaging the razor blade,

means for operating said rolls, and means for preventing reverse rotation of said rolls.

2. A device for sharpening razor blades comprising a box adapted to house a razor having a blade attached thereto, a support for said razor and blade to hold the blade in sharpening posi- 1

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