US942731A - Razor-sharpening device. - Google Patents

Description

J. J. MEEHAN.

, RAZOR SHARPENING DEVICE.

APPLICATION FILED JULY 2, 1908.

42973 l n Patented Dec. 7, 1909.

2 SHEETS-SHEET `1.

J. J. MBEHAN.

RAZOR SHARPENING DEVICE.

APPLICATION FILED JULYz, 1908.

Patented Deo. 7, 1909.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT cerros.

.ToHN J. MEEHAN, oF DENVER, coLonADo.

RAZOR-SHARPENING DEVICE.

Specication of Letters Patent.

'Patented Dec. 7, 1909.

Appliation' inea July a, 190s. serial 110-441,53?.

'form a part of this specification.

My invention relates to improvements in devices for sharpening razors, my object being to provide a device of this class which shall be specially adapted for use in sharpening double edged blades of the Gillette or other similar types.

My improved construction includes a casing in which isv journaled la rock shaft or spindle, around which the flexible stropping device passes. Also journaled. in this casing is a second rock spindle which forms a holder for the razor blade. The two rock spindles are connected on the outside of the casing in such a manner that when the spindle which is acted upon by the strop, iis actuated by a pull of the strop in one direction, a corresponding movement is imparted to theI spindle carrying the blade to be sharpened, thus bringing the opposite edge of the blade into operative engagement with the strop for sharpening purposes. Provision is also made for normally'retaining the blade-carrying spindle in a position whereby both of its edges are out of contact with the runs of the stropping device, thus obviating thepossibility of cutting the latter while reversing its running movement.

Having briefly outlined my improved con-v struction, I will proceed to describe the same in detail, reference being made to the accompanying dranJing in which is illus- .trated an embodiment thereof.

In this drawing, Figure 1 is a top plan view of my improved device. Fig. 2 is a side view of the same looking inthe direction of arrowv2, Fig. 1. Fig 3 is a sectional plan view of the device cutting the casing and the strop, the two spindles also being shown partly in section. Fig. 4 is a vs ection taken on the line 4-4, Fig. 1, looking in the direction ofthe arrow. Fig. 5

is a section taken on the line 5 5, Fig. 1,Y

the parts beingl shown on a lar er scale. Fig. 6 is a side view, similar to ig. 2, vthe parts, however, being shown lon a larger scale and in different relative positions.

Fig. 7 is a detail view of the split sleeve for receiving the blade-holding spindle. Fig. 8 is a view of the same looking in the direction of the arrow in Fig. 7. Fig. 9 is a detail view of the blade-carrying spindle. Fig. 10 is a similar view with the blade in place, the spindle being shown on a smaller scale. Fig. 11 is a similar View showing a slightly modified form of the blade. Fig. 12 is a detail view of the spring for normally retaining the blade in an intermediate position, and parallel, or approximately so, Y

with the two runs Aof the strop.

The same referencev characters the same parts in all the -views.

Let the numeral 5 designate a casing indica-te provided with u per and lower separatedv walls 6, whose a jacent extremities'are connected by side walls 7 land 8. Journaled in these side walls near one end of the casing is a rock spindle or roller 9 havin one extremity solid, as shown at 10, to faci itate the fastening of a crank arm 12 by means of a screw 13. This arm l2 is provided with a pin 14 which passesV through a slot 15 formed in one extremity of an arm 16 secured to one end of a spindle 17 by a screw 18. This spindle is journaled inv the opposite side walls 7 and 8 of the casing, and is split von opposite sides, as shown at 19, to

receive the protruding portions ofthe razor blade 20, when the latter is mounted upon its holding pin 21, the said pin being inserted in the hollow spindle as indicated in the assembled views. This blade-holder, as shown in the drawing is flattened on one side, as shown at 22, and lfrom this flat side protrude removable. studs 23, adapted to pass throu h openings 24 formed in the blade 20. y making the studs 23 removable and providing the holder 21 with a series of threaded yrecesses 25, the position of the studs may be changed to cause them to pass through openings formed in blades of different manufacture. Moreover, these studs may be placed at o posite extremities of the blade (see Fig. 11i), the blade infthis event being provided with V-shaped recesses 26.` One extremity of the bladeholder 21 is provided with a milled head 27 which protrudes from the casing on one side. This protruding head facilitates the casing, as aforesaid.

Athe said spindle. This blade is engaged on removal and insertion of the blade-holder in the hollow spindle 17 journaled in the -The hollow spindle 17 is provided at one extremity with a lip 28, which projects outwardly therefrom, occupying :t position beyond the adjacent extremity of the razor blade when the blade-holder is inserted in opposite sides by the laterally projecting extremities 29 of a coil spring 30, the latter being mounted upon and made fast to a screw pin 31, secured to one side of the casing. The coil must be locked upon the screw pin by solder, or otherwise, to prevent it from turning bodily thereon. In this event the opposite opposing arms 29 of the spring are both under tension, and iftheir movement .were not arrested by the pin 28, they would occupy a crossed position. Hence,v when the spindle 17 is turned in one direction, the movement-of the pin 28 is resisted by the tension of one of the spring arms 29; and hence, as soon as the power acting to turn the spindle ceases to act, the spring arm returns the spindle to; its normal position. This happens regardless of the direction of the spindles turning movement. j

Journaled in the extremity of the casing remote from the rock spindle 9,.is a roller 32 which' engages the opposite runs of the iexible strop 33, and forms a guide to keep the runs of the strop separated and whereby these runs are maintained in parallel, or approximately parallel, relation.

Assumin that the parts are assembled, substantial y as indicated in Figs. 1 and 2, and it is desired to sharpen a blade 20, the latter is applied to the holder 21, after which this holder is inserted in the spindle 17, the blade protruding through the slots formed in the blade, as heretofore explained, and as illust-rated in Figs. 3 and 4. I will also assume that the flexible strop 33 is aplied totheinstrument, as shown in the drawingand also that one end of the casing is equipped with holding means, as chains 34, whlch are connected with the casing by rin s 35 and with each other by a ring 36. ow, if these chains are passed around a hook, vor other stationary object of suiiicient stabilityY to resist the pull upon the stro the latter may be moved backv and fort by alternately pulling upon its opposite extremities. en the strop is pulled in one direction, the operating spindleis given a, artial rotary movement which, through t e medium of the crank arms 12 and 15, communicates a similar movement but in theopposite direction to the spindle 17 carrying the blade-holder'2l whereby a corresponding movement is im arted to the blade, throwing its opposite e ges into contact with the opposite runs of the strop for sharpening purposes; then, as the movement of the strop is reversed, the'two rock spindles are actuated in directions the reverse of -their previous movement, thus bringing the opposite edges of the blade into contact with the opposite runs of the ;strop, whereby both sides of each edge are brought into a. sharpening engagement with the ,.strop. This operation is continued until the blade is sharpened. As soon as the actuating pull upon the strop ceases to act,A the blade-` holder together with the spindle in which it is located, is automatically thrown by the spring 30 to the central position whereby the blade occupies a position parallel, or ap-A proximately parallel, with the two runs of the strop. This prevents the cutting of the strop when its movement is reversed,'before the edges of the blade have time to change their position.

In order to facilitate the removal and insertion of a blade, the casing is provided at one end with an elongated opening 40, which is enlarged at the center to receivethe hollow spindle 17. This slot 4 0 permits the in troduction of the blade-holding pin, or spindle 21, with a blade in position, as illustrated in Figs. 10 and 11. This makes it practicable to quickly introduce va blade for sharpening purposes and remove it after itk has been sharpened, and is'therefore con-` in the last named spindle which is hollow,

the'opposite edges of a double edged blade protruding through the, slots in the spindle, substantially as described. j j

, ,2. A. razor Sharpener comprising a casing,

a spindlejournaled in the casing, a razor strop passing around and engaging thespimf dle in operative relation, a -second spindle journaled in the casing to receive a double edged blade; means for normally retaining the second spindle in a predetermined position, and an operative connection between the journal of the first named spindle and that of the blade-holding spindle, whereby as the strop is moved back and forth over the first named spindle, the blade is actuated for sharpening purposes.

3 .1A razor Sharpener comprising a casing, two rock spindles journaled in theopposite sides of the casing, a holder adapted to receive a double edged blade, the said bladeholder bein inserted in the one Ispindle which is ho leu* lfor the purpose, thelast named spindle lbeing slotted on opposite sides'to'allow the opposite edges of the blade to protrude, an operative connection between the two spindles, a flexible strop adapted to engage the 4other spindle, and a spring for normally retaining the bladecarryln spindle in such position that the blade will be parallel, or approximately parallel, with the runs of the strop, substantially as described.

4. The combination with-'a casing, of -a rock spindle journaled in the casing, a flexible strop engaging the said spindle, a second spindle'slotted on opposite sidesand adapted .to receive a double edged blade, the last, named spindle being provided l with a lip, springs engaging the lip on opposite sides and normally holding the second spindle in 'such position that the blade is parallel, or approximatelyk parallel,A with the runs of the strop, the opposite extremities of the two spindles beingl provided with crank arms connected in 'o erative relation whereby as the o ne spindle 1s actuated the other is simultaneously operated, substantially as described.

5. In a razor Sharpener, the combination ,'.with a casing, of a blade-holding spindle journaled in the casing, the blade being double edged and protruding through slots formed in the said spindle, means for normally maintaining the blade-holding spindle in a predetermined position, another spindle journaled in the casing, a flexible strop engaging the last named spindle, an operative connection between the two spindles, and a guide rollerengaging the opposite runs of the sharpenlng strop, substantially as described|.

A razor Sharpener comprising a casing, a spindle journaled in the casing,-a stro engaging the said spindle, a hollow splndle journaled in the casing and slotted -on opposite sides, a holder for the blade adapted to be inserted endwise inthe hollow spindle,

the oppositeiedges of a double-edged blade protruding'through the slots in the hollow spindle, substantially as described.

v'i'. A razor Sharpener comprising a casing, a spindle journaled in the casing, al strop engaging said spindle, a hollow spindle also Journaled in the casing and slotted on opposite sides, a blade holder consisting of a in adapted tobe inserted endwise 1n the ollow spindle and readily removable therefrom in an endwise direction.

8. A razor Sharpener, comprising a casing, a spindle journaled in the casing, a strop engaging the said spindle, a hollow spindle Journaled in the casing and slotted on opposite sides, a holder for the blade, said holder comprising a pin adapted to enter the hollow spindle in an endwise direction, the casin being slotted at one end to permit the intro uction of the blade-holder with the blade in place, the opposite edges of a double-edged blade protrudingthrough the slots in the hollow spindle when the blade is inserted, substantially as described.l

. 9. A razor Sharpener, comprising a casing havin an elongated opening in one end, a spind e journaled in the caslng, a strop engaging said spindle, and a blade-holder adapted to enter the casing in an endwise direction with a blade in place, the bladeholder being jornaled in and readily removable frorn the casing, and an operative conneetion between the spindle and the bladeholder, whereby as the spindle is moved back and forth, the blade-holder is rotated in reverse directions to bring both edges of the blade into en agement with the strop, substantially as (escribed.

In testimony whereof I aiix my signature in presence of two witnesses.

JOHN J. MEEHAN.

Witnesses:

A. J. OBRIEN, DAISY F. HUGHES.

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