US1829060A

US1829060A - Sharpening device for safety razor blades and the like

Info

Publication number: US1829060A
Application number: US337326A
Authority: US
Inventors: Jay B Rhodes
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-02-04
Filing date: 1929-02-04
Publication date: 1931-10-27
Anticipated expiration: 1948-10-27

Description

Oct. 27, 1931. J RHODES 1,829,060

SHARPENING DEVICE FOR SAFETY RAZOR BLADES AND THE LIKE Filed Feb. 4, 1929 2 Sheets-Sheet l INVENTOR C7457 ,6. fi/wdw Oct. 27,1931. J RHODES 1,829,060

SHARPENING DEVICE FOR SAFETY RAZOR BLADES AND THE LIKE Filed Feb. 4. 1929 '2 Sheets-Sheet 2 IN VENTOX Jay E. Ema/w Patented Oct. 27, 1931 JAY B. RHODES OE KALAMAZOO, MICHIGAN SHARPENING DEVICE FOB SAFETY" RAZOR BLADES THE LIKE Applicationfiled February 4, 1929. SerialNo. 337,326:

- i The main objects of this invention are:

First, to provide a sharpening device for safety; razor blades and the like'which, while easily'manipulated, is very eflicient and en- 6 ables the effective and uniform sharpening of the blade, even by unskilled persons.

Second, to provide a sharpening device of this character which effectively prevents cutting ormutilation of the strap or other sharp- 10 ening element. Third, to provide a sharpening device which is adapted for use with either flexible sharpening elements such as straps, or non-flexible sharpening elements. I 15 Fourth, to provide a sharpening device having these advantages which is very simple and economical in structure and at the same time the parts are strong and durable. Objects pertaining to details and economies of my invention will definitely appear from the description to follow. The invention-is defined in the claims.

A structure which embodies the features of 'myinvention is clearly illustrated inthe accompanying drawings in which: Fig.1 is a fragmentary plan view of my sharpening device in operative relation to a sharpening element, the partsbeing in the position occupied when moved in the direction indicated by thearrow.

Fig.2 is a side View withthe device shown at the end of its stroke to the left by full lines, and the reverse movement occurring when moved to the right indicated by dotted lines. Fig. 3 is a-detail section on a line correspending to line 3-3 of Fig. 1 showing the re lation of the blade to the roller and the sharpening element when the sharpeningstroke is toward the left.

' Fig. 4 is a similar sectional viewshowing Fig. 8 is a members.

Fig.9 is an enlarged fragmentary section on line 9-9 of Fig. 6.- V

Fig. 10 is a detailsection on line 10-10 of Fig. 5. v i

Fig, 11 is a side view of one of the roller end members.

In the accompanyingidrawi-ngs 1 represents a razor strap but it will be understood that the sharpening elementmay' be of'any suitable character, either flexible or nonflexible. In the embodiment illustrated my improved sharpening device comprises a handle 2 havinga spindle 3, the handle being disposed axially of the spindle.

On this spindle I mount aroller' desigplan view of one of theholder nated generally by the numeral ,4. In the embodiment illustrated this comprises a barrel portion 5 and end portions6 whichare fitted-into notches 7 in the end of the barrel portion and secured therein. These gend members have radially projecting ears '8. The segmental portions 9 of the barrel are bent inwardly to retain the end members 6 and their ends 10 provide stops, the-purpose of which will appear later.

The cars 8 are provided with outwardly projecting pivots 1l.engaging the. arms 12. of the U-shaped :blade carrier 13. This carrier is provided with a blade holder consisting in the embodiment illustrated of a pair of coacting

members

14 and 15 adapted to receive and clamp a blade as16- The arms 12 of :the carrierare provided with opposed slots 17 and-18, theslot 18 being formedwitha shoulder. 19, see F ig, 7. The blade holder member l tis arranged through the slot 17 and provided'witha lug 20 engaging the outer side of the arm. It is also provided with a notch 21 which engages the shoulder 19 of the slot 18 so that the holder member 14 constitutes a tie mem ber-for the carrier, retaining its arms in engagement withthe pivots 11, that'is, it prevents their being sprung off the pivots.

The member15 is slidable in the slot 18 5 and constitutes a key or locking member in that it prevents the disengagement of the member. 14 from the shoulder 19. The-memher 15 is detachably engaged with the opposite slot 17 as indicated in Fig. 6.

The member 15 is provided with a keeper 22 which retains it in blade holding position. This keeper is of such character as to coact with the stop 23 in preventing the complete removal of the member 15. Either the keeper or the stop is formed after the member is inserted through the slot 18.

The member 15 is provided with blade engaging lugs 24 adapted to enter the holes 25 present in certain well-known types of safety razor blades. The member is slotted at 26 to receive these lugs and permit longitudinal movement of the member 15.

The blade holder is so positioned on the carrier that the blade is supported in the plane of the carrier pivots and with its edge adjacent to the roller. It will be observed that the pivots for the carrier are eccentric relative to the axis of the roller; that is, they are substantially spaced from the axis of the roller and disposed centrally relative to the stops 10 so that the swinging or rocking movement of the carrier and roller relative'to each other is limited by these stops.

When the roller and carrier are in the position indicated in Figs. 3 and 4 the roller acts as a support for the edge of the blade; that is, the blade may be deflected somewhat by pressing upon the strap as shown in Figs. 3 and 4:, which views, it will be understood, show the blade and sharpening device considerably exaggerated in size. The roller serves to limit this deflection and supports the bladeso that the desired bevel is maintained.

With the parts thus arranged, assuming that the device is placed upon the strap with the carrier in advance of the roller, the initial forward movement will cause the roller to swing forwardly until the stops engage the carrier and the carrier moves forwardly with the rear edge of the blade in engagement with the strap and, in the event of suflicient pressure, supported by the roller as indicated in Figs. 3 and 4. On the reversal of the direction of stroke the edge of the blade is first swung away from the strap and the carrier swung over the roller as indicated by dotted lines in Fig. 2 until the carrier rests in front of the roller and the opposite side of the blade is brought into coacting relation to the strap. All that is necessary for the operator to do is to move the device backward and forward over the sharpening element with suiiicient downward pressure to hold the device to the sharpening surface.

Owing to the relation of the edge of the blade that is being sharpened to the roller, it

is quite impossible to distort the blade so as to round its edge instead of sharpening it with the proper bevel, as the roller maintains the blade in proper relation to the sharpening element. even though the sharpening element f be loosely held or allowed to flex sharply around the roller. It will be observed that the roller engages the strap in advance of the blade so that a flat surface is presented to the blade.

The blade is so supported that immediately on the beginning of reversing movement, its edge is swung away from the sharpening element, and it is quite impossible to cut or mutilate the sharpening element. The parts of my improved sharpening device are very simple in structure and easily assembled, and there are no parts that are likely to become broken or worn with ordinary use. The blades may be quickly inserted or removed and when in the holder are protected so that the operator cannot be injured by the ordinary manipulation of the device.

I have illustrated and described m improvements in an embodiment which have found highly satisfactory. I have not attempted to illustrate or describe certain embodiments or adaptations as I believe this disclosure will enable those skilled in the art to embody or adapt my improvements as may be desired.

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

1. In a sharpening device, the combination with a handle of a spindle carried by said handle, the handle being disposed axially of the spindle, aroller rotatable on the spindle and notched at its ends to provide spaced stops at each end and provided with radial pivot lugs disposed centrally relative to said stops, and a blade carrier pivotally mounted on said lugs and provided witha blade holder arranged to support a blade substantially in the plane of the axis of the carrier pivots and with its edge to be sharpened in lapping relation to the roller when the carriage is in en gagement with the roller stops.

2. In a sharpening device, the combination with a handle, of a spindle carried by said handle, the handle being disposed axially of the spindle, a roller rotatable on the spindle and notched at its ends to provide spaced stops at each end and provided with radial pivot lugs disposed centrally relative to said stops, and a blade carrier pivotally mounted on said lugs in radially spaced relation to the axis of the spindle to coact with said stops and provided with a blade holder.

In a blade sharpening device, the combination with a handle, of a roller rotatably mounted on said handle, a blade carrier pivotally mounted on said roller, the carrier pivots being disposed eccentrically relative to the axis of the roller, and coacting stops on said roller and carrier positioned so that the periphery of the roller constitutes a support for the edge of the blade being sharpened when the carrier is moved across the surface of a sharpening element and the carrier is reversed and swung to a position in advance of the rolleron the reversing of the stroke.

4. In a sharpening device, the combination of a rotatably mounted roller,-a blade carrier pivotally mounted on said roller, the axis of the blade carrier being spaced from the axis of the roller, and stops on said roller limiting the swinging movement of the carrier and roller relative to each other, said pivots for said carrier constituting its sole connection to said roller whereby rotative movement of the roller resulting from engagement thereof with a surface will swing the carrier to a position in advance of the roller and rotation of the roller in the opposite direction will first lift the edge of the blade being sharpened from the surface and then reverse the position of the carrier.

5. In a blade sharpener, the combination with a handle, of a roller rotabably mounted on said handle and provided with pivots radially spaced from its axis, a U-shaped carrier having its arms engaged with said pivots, the arms of said carrier having opposed slots therein, one of the slots being shouldered, a blade holder comprising a pair of holder members, one of whichis provided with a lug at one end engaged in one of the slots and with a notch at its other end engaged with the shoulder of the other slot, said member constituting a tie member for said carrier and having upwardly projecting studs thereon adapted to engage a blade, and a second holder member slidable in one of said slots to detachably engage the other.

6. In a blade sharpener, the combination with a handle, of a roller rotatably mounted on said handle and provided with radially disposed peripherally projecting lugs, the ends of the roller being notched to provide stops spaced uniformly relative to sand lugs, said lugs being provided with outwardly projecting pivots, a U-shaped carrier having its arms engaged with saidpivots on said lugs to coact with said stops, and a blade holder on said carrier.

7. In a blade sharpener, the combination with a handle, of a roller rotatably mounted on said handle and provided with radially disposed peripherally projecting lugs, a U- shaped carrier having its arms pivoted on said lugs, the arms of said carrier having opposed slots therein, one of the slots being shouldered, a blade holder comprising apair of holder members, one of which is provided with a lug at one end engaged in one of said slots and with a notch at its other end engaged with the shoulder of the other slot, and a second member slidable in said shouldered slot to detachably engage the other.

In witness whereof I have hereunto set my hand.

JAY B. RHODES.