US1571523A - Razor stropper - Google Patents

Description

Feb. 2 1926. 1,571,523

H. IPSEN RAZOR STROPPER Filed Sept. 8, 1920 [NI/E TOR A TTORNEY- Patented Feb. 2, 1926.

2U NLTIEEID HENRIKYIPSEN,"OF BROOKLYN,"NEWTYORK,TASSIGI\TORTO MAURICE L. BRANDT, OF

"NEVVYORK, N. Y.

irApplicationi filedseptember 8, 1920. Seria1=1\To.'-408,848.

To all whom it may concern:

Be it known that? 1, Hanan: I1SEN,1EL citizen of the United States, and a-resident of the borough of Brooklyn, county of-Kings, city and State of New'York, have invented a certain new and useful Razor Stropper, of which thefollowingis aispecification.

My invent? on; relates to razor-stroppers of the swing strap variety,- in which a razor-or razor blade issnspended in (the bight of a strop and the opposite sides of the-blade: are alternately presented tothe surface of the strop as the latteris-moved inopposite directions relatively to the blade,- andat the same time the blade is moved transversely relatively to the strop whereby the proper stropping and setting moveme'ntsof: the blade relatively to thestrop are attained.

In the prior devices-of this character, the movement ofthe blade transversely 1 of the strop has-been accomplished by means of a screw which is rotatedby pulling first on one end'of the StI'OPwZLDCl then on the other, the screw being located in the *bight ot. the

' strop and being rotated by the engagement of the strapsin the samermanner thata pulley is rotated by a belt-.

The object of the present invention isto provide a devicein which a razor blade or the like edged tool may-he so positioned, arranged and manipulated that when each side of the blade is presentedlto the 'strop there will be relative movement between the'b-lade and the strop in -which the blade will be caused to travel in the-direction, transverse to the longitudinal axis, ofthe strop while the strop is heingmoved in the directionot' its longitudinal axis, and wherein the blade will be caused; to partake of rapidnnovements transversely of the stropiwhereloy it, the blade, will be drawn latterly across the path of movement of the strop a plurality of times during each "full movement of the strop.

A further object is to provide simple,

cheap and .etiicient meanswhereby'opposite sides of the blades will be presented to the strop as the vdirection of movement of the same is changed, and whereby danger of cutting or otherwise marring of the rstrop is avoided. These and further objects will more fully appear in the following specification and accompanying drawings considered together or separately. 2

I have illustrated one embodiment of :my inventlonin theaccomp-anflng drawings,in which like p arts 1l1: all. of the several figu-res 1 are designated by corresponding characters a of reterence, fillddll'VVlll'Qll taken ona line-just inside of the righthand side member 1: of Fig; l,and

:Fig. 6 is aidiagrannnatic View showing'the path of movement of the-blade in relation of the strop.

In carrying out my invention I provide a frame comprisingside members 1, 1, preferably of key-hole shape as shown. The members are secured together in spavced-relatio-n by means ot a cap piece. 2 having a loop 3 througlrwhichis passeda strap 3 whereby the framemaybe'secured to astationary ob,- ject, such as a hook, as is common.-

Extending longitudinally o-f-the frame and in proximity to the capu2 llSzEL stay 4: which is preferably rivetedorotherwise secured to the side members and-eXtending-between. them, and rot at-aloly-mounted.on the stay 1 is roller *5. 1The' -sideJnemhers.are held :in'spaced ir'elation by other-stay members 6, 7,8,9, and 11 as shown.

A strop 12 having a handle 13w=at--each extremity it placed 1 within the frame between-the roller 5 and the cap piecei 2, there being a bight in the strop Within which the roller 5 rests to *beengaged. by the .strop which will act as a beltto rotate the roller inopposite direction as one endior the other of the :strop is withdrawn from the roller.

1 Loosely carried on the stay rod 6 isa sleeve 1 1 towhich is securedablade holder comprising a pair of: leaves 15 between which a razor bladeis adapted to besecure'd in any desirechmanner, and: with the edge *of the blade: projecting beyond the leaves in the direction away from the stay rod 6. I

i Rig-idly secured to the sleeve 14 is a-tinger '16 which projects? from the sleeve in the direction opposite the leaves 15. ZIhe free we cam groove 18 in the cylindrical surface of the roller 5.

Loosely mounted on the stay rod 4 is a frame comprising a pair of oppositely disposed discs 19, 19, one at each end of the roller. The discs are connected by a bar 20 which is positioned between the roller and the stay 6. The bar is provided with a longi tudinal slot 21 through which the finger 16 projects.

Rigidly secured to each disc 19 is a spring member 22. Each spring member comprises two legs which are crossed and engage opposite sides of the stay rod 6, whereby the bar 20 is normally positioned between the rods 4 and 6 with the finger l6 and the blade holder in the central position as shown in full lines in Fig; 2.

The strop, as shown in Fig. 2, is guided by the stays 7 and 9 on one side and by the stays 8 and 10 upon the opposite side of the frame. The stays 7 and 8 are so positioned relatively to the blade holder that when the latter is oscillated to engage the blade with the strop that portion of the strop in engagement with the blade will be backed up bya stay and there will be no danger of the strop being kinked,-crimped or cut by the pressure of the blade, and rounding of the edge of the blade will be avoided.

The operation is as follows:

A razor blade is inserted in the blade holder from one end thereof with the edge of the blade projecting from the holder, and with the latter in the central position as shown in Fig. 2, the side members 1, 1 being cut away as shown to permit of the insertion and removal of the blade,and also to permit of endwise movement of holder.

The loop of the strop 3 is placed over a hook or other stationary object, and the handles 13 are grasped one in each hand to bring the axis of the roller 4 in approximately the vertical position. The strop is now drawn back and forth over the roller whereby the latter is rotated first in one direction and then in the other as the right or left hand of the operator is drawn toward his body.

.The initial movement of the roller will,by reason ofthe frictional engagement of the head 17 with the groove 18, swing the finger 16, and move the bar 20 in the direction of rotation, and the engagement of the finger 16 in the slot 21 of the bar will swing the blade holder in the opposite direction. This movement will bring one edge of the blade into contact with that portion of the strop which is moving toward the operator and the strop will be drawn along the blade in the direction from the back to the edge thereof. In swinging the discs 19 with the roller one leg of each spring 22 will be put under tension, and the tension of the springs together with the frictional engagement between the roller and the strop will overcome the frictional engagement of the head with the side wall of the groove 18 and the movement of the discs will be arrested while the roller will rotate under the influences of'the moving strop, with the edge of the blade in contact with that end of the strop moving toward the operator.

\Vhen the movement of one end of the strop toward the operator has reached its limit the handle on the other end thereof has been drawn almost into the frame. The motion is now reversed.

As soon as the first movement of the strop has ceased and before the reverse movement can start due to the pull on the now short end of the strop, the springs 22, 22 will release the edge of the blade from contact with the now long side of the strop and, the roller being at rest, the tension of the springs will release the head 18 from its engagement with the side wall of the groove and swing the blade holder to the central or neutral position. It will be seen that the head 17 is less in diameter than the width of the groove 18 and the arm being centered, as shown in Fig. 1 and in full lines in Fig. 2 the head will not engage the side wall of the groove until the roller has been given a partial rotation. hen the rotary movement of the roller is arrested the springs will move the arm back to the position shown in full lines in Fig. 2 as such movement will be in the direction away from the inclined side wall of the groove.

hen the short end of the strop is pulled the roller will be rotated in the opposite di rection and the above described operation will be repeated except that the other side of the blade is presented to the stropping surface.

During the operation above described the engagement of the finger 16, with the cam groove 18 of the roller 5 will cause the blade holder to be reciprocated back and forth along the stay 6 and across the line of movement of the strop. The throw of the holder in the direction longitudinally thereof, and

tarnsversely of the line of movement of the strop will be limited only by the length of the slot longitudinally of the roller.

The holder will be reciprocated once for every rotation of the roller and the diameter of the roller will determine the number of reciprocations of the blade holder for each complete movement of the strop. In the embodiment of the invention illustrated, when the strop is pulled by the right hand of the operator, the roller, which is of comparatively large diameter, will make three revolutions and the blade will be re ciprocated three times across the path of movement of the strop while one side thereof is in engagement with, the strop.

lVhen the left hand is pulled toward the operator the blade will be swung over, its opposite side "will engage that portion of the strep on the other sideof the roller and the blade will be reciprocated three times while that end of the stropis being pulled.

By making the roller smaller in diameter the number of reciprocations of the blade per movement of the stropmay be increased to any desired extent.

The position of the pivotal point, on which the blade oscillates, relatively to the stays 7. and 8 being such that the edges of the blade engage the strep opposite those members provides a firm foundation for the bearing points of the blade, and the pressure of the blade against the strop cannot bulge thelatter outward-to form a. more or less deep pocket in which the edge of the blade may rest during the actual stropping. The formation of such a pocket would cause the delicate edge of the blade to bear on a concave surface and said edge would become rounded as is frequently the case when an unskilled person attempts to strop a razor on an ordinary swing strop and allows the strop to sa In addition with such a pocket there will be danger of the blade catching in the concaved surface of the strop before the blade can swing free of the strep when the movement of the latter is reversed, thereby cutting or otherwise marring the stropping surface in addition to dulling the blade.

In accordance with the provisions of the patent statutes, the principle of the 1nvention has been described, together with the process which is now considered to represent the best embodiment thereof, but it IS to be understood that the process described is merely illustrative, and that the invention may be carried out in. other ways.

Having now described the invention, what is claimed and desired to be s cured by Letters Patent is 1-- 1. A device of the character described, comprising a strop, said strop being formed into a. bight, a roller within the bight and adapted to be rotated in opposite directions by reciprocating movements of the strop, there being an endless pe *ipheral groove in the cylindrical surface of the roller, a support for the roller, a blade holder pivoted in the support and adapted to oscillate transversely of the axial line of the roller and to be moved longitudinally of the roller, and a finger engaging a side wall of the groove and adapted to oscillate the holder, a spring for moving the holder to a position intermediate the extremes of oscillation, the engagement of the finger in the cam groove during rotation of the roller causing the holder to reciprocate in the direction at right angles to the directien of the oscillating movement.

A device of the character described,

comprising a strep, said strep being formed into a bight, a roller within the bight and adapted to be rotated in opposite directions by reciprocating movements of the strop,

there being an endless peripheral groove in the same and the holder, said finger engaging the element, and a spring carried by each'end of the element for moving the holder to a position intermediate the extremes of oscillation, the engagement of the finger in the cam groove during rotation of the roller causing the holder to reciprocate in the direction'at right angles to the direction of the oscillating movement.

3. A device of the character described, comprising a support, a roller rotatably mounted in the support, a strop, said strop being formed to a bight the roller being in the bight, and adapted to be rotated in opposite directions by reciprocating movements of the strop, an element pivoted in the axial line of the roller, a spring secured at its center to the element and having its ends engaging opposite sides of a stationary portion of the support, said element being capable of movement independently of the roller, there being an endless peripheral groove in the cylindrical surface of the roller, a blade holder pivoted in the support in parallel relation to the roller, a finger carried by the holder and adapted to engage the groove in the roller whereby the holder may be given a complete reciprocation in the direction axially of the roller on each revolution. of the roller, said finger having a sliding engagement with the element, there being frictional engagement between the element and roller whereby the element will be oscillated as the roller is rotated in each direction, the spring tending to maintain the linger in the central position relatively to the extremes of oscillations of the element.

t. A device of the character described, comprising a support, a roller rotatably mounted in the support, a st-rop, said strop being formed to a bight, the roller being in the bight and adapted to be rotated in opposite directions by reciprocating movements of the strep, an element pivoted in the axial line of the roller, a spring secured at its center to the element and having its ends engaging a stationary portion of the support, said element being capable of moving relatively to the roller, there being an endless pcripheral groove in the cylindrical surface of the roller, a blade holder pivoted in the support in parallel relation to the roller, a finger carried by the holder and adapted to engage the groove inthe roller whereby the holder may be given a complete reciprocation in the direction axially of the roller on each revolution of the roller, there being a slot in the element, said finger passing through the slot and having a sliding engagement with the element there being frictional engagement between the element and roller whereby the element will be oscillated as the roller is rotated in each direction, the spring tending to maintain the finger in r the central position relatively to the extremes of oscillations of the roller.

5. A device of the character described, comprising a support, a roller rotatably mounted in the support, a strop passing over the roller whereby the latter may be rotated, an element comprising an arm in frictional engagement with each end of the roller, said arms being connected by a bar, there being a slot in the bar, there being an endless peripheral groove in the cylindrical surface of the roller, a stay member extending across the support and parallel to the axis of the roller, a blade holder loosely carried on the stay member, a finger carried by the holder, said finger passing through the slot in the bar. and the end thereof engaging the groove in the roller, a double acting spring carried by each arm of the element and adapted to bear against opposite sides of a member stationary relatively to the Support.

This specification signed this 2nd day of September, 1920.

HENRIK IPSEN.

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