US1867623A - Honing device - Google Patents

Description

July 19, 1932.

.J. GOULDBOURN ET AL HONING DEVICE Filed Dec. 27, 1926 Patented July 19, 1932 UNITED S T Josurn- GOULDBOURNI AND FRED nicks,

UNITED SHOE MACHINERY CORPORATIQ T ION OF NEW JERSEY Application filed Deceinber 27, 1926, Serial No. 157,353, and .injG -eat This invention relates to abrading devices and is herein illustrated as embodied in a device for sharpeningor honing the cutting edges of flat, rectangular knives having straight cutting edges. 1 V

l/Vhilevknives of thetype above referred to are used in performing a number of various shoemaking operations, one of the most commonusesof such knives is to be found in performing splitting or evening; operationsuponpieces of stock. The cutting edges of knivesfused in performing these splitting and evening operations are generally hollow ground, in a suitable grinding ma- Y7 chine, and aresubsequently submitted to a honing operation to impart to the knife a final and more perfect cutting edge. 7

l/Vith the foregoing. in mind 1t 18 an ob ect of the present invention to provide an im-' proved device which may be operated to hone quickly and efficiently knives of the typereferredto and by which the desired inclination of the groundtface on the knife will be preserved independently of'the skill of the operative in manipulating'the lioning stone.

In accordance with theabove-stated object, a feature of the invention consists in the combination with a honing tool, a work 4 holder and a clamp for maintaining Work in the holder, of a gage movable between an operative position and an inoperative position, and a spring movable with the gage to either one side or the other of a dead-center positionto maintain or look the gage in either operative or inoperative position. The illustrated gage is an elongatedhmember adapted to p'ositiona cutting blade'or knife properly in the holder in operative relation 1 to the honing tool by engagement with the i I cutting edge It will be understood that the invention, 7 whiehis herein illustrated asbeing embodied in a device for operating upon flat rectanof the blade orknife.

gular knives, is in no respect limited to the particular type of work to be operated upon' other than may be determined from'the scope of the appended claims.

The above and alsoo-ther features of the invention, together with certain. details of prises a base or; frame 10, substantiallyitri- "the lever 16 is at the inward end (Fig. 1) of on LEICESTER' Enchant, Assrenons TO n, on PATERSON, newt JERSEY; A ooaroan:

I-IOIUING nnvroii- ,Britain February 3, 19 26. 7

the appended claims.

Inthedrawing', "liiig. 1 is a plan" view of the mifeggrinding ClQVlCQ showing a cutting; blade supported withintheworkholder; i V F ig 2is a side'elevatjion of the device, as seen from the'left ofj Fig lk; and Fig.'3 'is a view in'perspective ofa splitting knife of the same typeas that shown in Figs. lancLZ. v As shown in .the'drawing, the device comangular in shape (Fig, 1) and providedupon its upperxsurface with a plurality ofspaced seatings'12 upon which a blade ltto be honed is clamped; r

T le knife or blade ii (Fi .3 is treat rectangular shape and is of a type employed generally in splitting,

I or evening the thick ness of, leather s'toclnand'shoepartsv- The cutting edges of knivesofthis type are in the form ofastraight line and are generally 7.3

hollow ground.

For use in clamping the knife upon the seatmgslQ there is provided'aclamping lever upwardly from-the frame 10. The lever 16 is provided itsrear extreinity iwitha substantially vertical extending} threaded hand sc gg 't he lower end of, which is arranged to engage theupper fa ceiof the frame when its movement along the stud 20. By rotating the hand screw 24E when the lever 16 is in this position the lever-may be swung about the stud; to clamp the knife rigidly against the frame 10, 'When th screw 24is rotated to releasev the-knife the clamping lever 16.-

ma be slidr long thestHdj Q untilj e s r w and, rearwardly extending portion of the ver 1.6. a lea or, he edge f th am l (Fig. 1) atwhich timethe lever may be s'wungiabout its pivot to raise theforwardly .dle or supporting width of the extending arm 18 out of engagement with the knife 14 to allow a knife upon which the honing operation has been completed to be removed and another unhoned knife to be positioned with facility within the honing device.

The device is provided with means to assist in positioning the blade within the holder prior to applying the clamping pressure to the blade, and to this end there is provided a pair of pins 26 which are vertically extending and arranged one at either side of the seatings 12. By means of the pins 26 the supported knife may be properly positioned transversely of the frame, and to assist in positioning the blade-longitudinally there is provided a gage 28' which is herein illustrated in the form of a pair of joined blocks extending laterally of the frame 10. As shown in Fig. 2 the gage 28 is mounted for movement-between an operative (full line) position and an inoperative (dotted line) position. A. spring 30 extends between the frame and the gage 28 and, as the gage is moved from one ofsaid positions to the other, the spring moves with the gage, passing. through a dead-center position, and then maintains or looks the gage in the desired position. In positioning a blade within the holder the gage 28 is moved to its operative position, as shown in full lines in Fig. 2, and the blade is placed upon the seatings' 12 between the positioning pins 26 with its cutting edge resting against the rear surface of the gage 28, and in this position the blade is clamped by means of the lever 16 and hand screw 24. After the knife to be honed has been so positioned the gage 28 is swung outwardly and downwardly about its pivot into an inoperative position for the purpose of leaving the edge of the knife clear and unobstructed for the honing operation.

At the rearward corner or apexof the triangular frame 10 there is formed a vertical boss 32 in which is rotatably mounted a spinpost 34 which may be adjusted vertically within the boss and is provided at its upper end with a rectangular portion 36 bored transversely to receive a pivot pin 38. On the pivot pin 38 and at each side of the rectangular block 36 are located ears 40 extending downwardly from a substantially horizontally disposed sleeve bearing 42 in which is slidably and rotatably mounted a rod 44.

The rod 44 is provided with a band or casting 46 which is arranged to surround a discal honing stone 48. The stone in shape and band 46 so as to afford two opposed, easily accessible, honing' faces which ma stofid that the operative, by rotating the honing toolthrough 180 may, as desired, bring either of the different faces into honing relation with'the cutting edge of a" supported gitudinally of the blade) to stone is placed on the pad.

will always be kept properly lubricated and it is desired to hone 48 is cylindrical is somewhat thicker than thebe of different grades. It will be underknife. The stone 18 is maintained within the band 46 by means of screws 50 which pierce the band and abut a split ring 52 arranged to surround the honing stone. A handle 54 is secured to the band 46 and may be used in manipulating the honing tool.

The rod 44 carries at its rear end a collar 56, provided with a felt washer 58, which limits forward movement of the stone (lonprevent the hone from slipping forwardly oil the edge of the knife during the honing operation. A second felt washer is located adjacent a boss formed on the band 46 and limits rearward longitudinal movement of the honing stone duringthe honing operation. "A plurality of pins 62 are symmetrically disposed with respect to-the work holder and are for use in limiting movement of the honing stone transversely of the work holder and of the supported bladeduring the honing operation.

In the use of the device, the edge of a clamped knife is located a substantial distance in front of the bearing42and the upward and forward inclination of the seating s 12 for the knife is such that the bevel of the knife and the face of the hone are substantially horizontal. It will be apparent that with this construction'the honing'stone may be freely moved by the operator in any direction over the edge of the knife and the honing may, therefore, be effected by movements similar to those used in hand honing, but that with this construction the anglev of. the knife edgeremains unaltered since the pivotmount ing of the stone while allowing the stone to be moved freely in any direction over the knife edge, prevents the stone from being tilted vertically across the edge of the knife.

Fixed to one side of the triangular frame 10 i is a cup shaped receptacle 64 (Fig. 2) which has on its upper face a recess or seating for the honing stone when it is not being used and this seating has in it a pad 66 of felt or other absorbent material upon which the stone rests. This pad 66 may be soaked in-oil so that it will give up oiltothe stone when the Thus the stone cleaned. I

In the drawing a'single bevel knife has been illustrated but it is pointedout that if a double bevel knife the only change required from the construction shown is that the angle of the seatings 14 with the horizontal be altered in such a manner that the bevel surface of'one side of the knife be located substantially horizontally when the knife is clamped to the s'eatings.

Having thus described our invention, wha we claim as new and desire to'secure by Let ters Patent of the United States is:

v1. In a honing andsharpening device, th combination with a work holder, a clamp fo located on the machine frame use in maintaining supported work within the holder, and a honing tool, of a movable gage between an operative and inoperative position for use in positioning properly blades within the holder and a spring, mov able with the gage to either one side or the other of a dead-center position, to lock the gage in either operative position or inoperative position.

2. In a sharpening and honing device, a

honing tool, a work holder comprising a plurality of spaced positioning pins adapted to engage the edge of the supported Work properly to position the work transversely within the holder, a gage comprising an elongated member movable between an operative and an inoperative position properly to position the Supported Work longitudinally within the holder a spring, movable with the gage to either one side or the other of a dead-center position, to lock the gage in either position and a co-operating clamp member for maintaining rigidly the blade within the holder after it has been properly positioned by said pins and gage.

3. In a honing and sharpening device, the

combination with a honing tool and a knife holder, of a gage comprising a movable elongated member, a pivot for the gage, a spring connected to the gage, said spring passing by the pivot upon movement of the gage to maintain the gage in either one of two positions, one of said positions being an operative position against which the knife may be positioned and the other being an inoperative position away from the knife, and a co-operating clamp member for maintaining rigidly the knife within the holder after it has been positioned against the gage.

In testimony whereof we have signed our names to this specificationQ JOSEPH GOULDBOURN.

FRED RICKS.

CERTIFICATE OF CORRECTION Patent No. 1,867, 623. July 19, 1932.

JOSEPH GOULDBQURN, ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, lines 3, and 4, claim 1, strike out the words "between an operative and inoperative position"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 23rd day of May, A. D. 1933.

He J, Moore. (Seal) Acting Commissioner of Patents.

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