US1878840A - Cutlery polishing machine - Google Patents

Description

J. Fuse Filed Aug. 8, 1929 CUTLERY POLISHING MACHINE- Sept. 20, 1932.

muxlm `umiln'u: R a 1| INVENTOR gjm/V TMW/o,

ATTORNEY Sept. 20, A1932.

J. Fusco 1,878,840

GUTLERY POLISHING MAGHINE Filed Aug. 8, 1929 l 2 Sheets-15h66?l 2 INVENTOR ik gk 'i 'ATTORNY Patented Sept. 20, 1932 VJOHN rusoo, yon NEW rrrnTnN,` coNNno'rrcUr cu'rLnnY ronrsrrrive MACHINE a n l Application led Augustl 8, 1929. Serial No. 384,391.

This invention relates to cutlery finishing machines. Cutlery blades today are largely blanked from sheets of stainless steel and require no grinding like, forinstance, a yforged V blade. Thevsteel rolling process Vwill leave well dened marks which' will appear in the blades blanked out of the rolled sheets.

Thebladesfare rst passed between op posed wheels carrying abradent material coarse enough to t-aper the blade and form the cutting edge and also remove as much as 'possible thermarks left by the rolling process. These coarse abrasion wheels, however, leave marks of theirv ownV which the succeeding finer abrasion wheels arebound to'follow, but cannot entirely remove, so but what they can readily be seen after hand buffing, which is too expensive an operationto be continued long enough to entirely remove the preceding imperfections. 5

The object of the present invention is to employ polishing rolls rowwheels 'and to mechanically pass the blades through the rolls in two directions, V and thuslbreak up notonly the lines `of the x rolling process, but also eectually destroy the lines formed by the initial coarse abrasion wheels, so that but little handbufiing isjre quiredV to produce a mirror-like finish. n

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several viewsY in whichy Y Y .Y i

lFigure 1 represents a front elevation of the machine in operationo Figure 2v'is a plan View of the machine in operation showing a knife blade passing through the rollsY Y i Y Figure'3 is a partly broken end elevation Y of the machine lookinguin the direction of arrow a of Figure 2- withthe traveling cari riage and its mechanism andsupport re-,

moved, and l Figure 4 is a cross 'sectional 'view of carin place of the narriage supportingV frame on line b-b of Figure 2, y l

The bed 1 `supports the principal members of the machine comprising, in part, the stand'- ards 2, .3,-and 4, in which are located the floating boxes 5, 6, and 7. The shaft 8 of the upper Vpolishing roll 9 has one end ournaled in the box 7, while its other end is detachably con- 1 neoted to the sleeve 10 by the pin 11, andthe sleeve to the short shaft 12 ollrnaled in the 55 boxes 5 and 6 Vand carrying the pulley 13 by means of which the upper polishing roll is rotated through themedium of the -belt 14y and pulley '15 on the main driving shaft 16 journaled in the standards 17, 18, and 19 is the main shaft drivingv pulley. 20 is the lower polishing'roll on the shaft 21.]'ournaled in theboXes 22, 23, 24, mounted inthe several standards, and 25 -is the driving pulley for this vlower roll shaft.

26 isa bar supported on the springs 27,128v and 29, and 30, 31. and 32are studs passing Y freely through the bar 26 and each is anchored respectively in the upper floating boXes, 6, and 7, as shown in Figure 3.. The several springs alsov pass freely through the caps 2fL 3a 'and 4a and rest on ad'ustinfr nuts lone 33, being shown in-Figure 3. -34 is abar pivotally supported in the ears 35 attached Yto .the bar 26, and 36 isa rod pivotally connected to this har and also to' the treadle lever 37.

38'is a plate mountedon the bed for sup-j` a porting the mechanism pertaining tolfthe traveling knife holding carriage comprising an angular supporthaving the basef 39 and the upright 40, Figure 4. 41 is a continuously f driven feed screw, Figure 1, j ournaledinthe standards 42,43, Figure 1, rising from the base 39.' rlhe outer end of this screw is connected to the shortrotatable shaft 44 by the universal coupling 45,'y and 46 isv the driving pulley'for the short shaft 44l and feed screw. The feed screw and `support are preferably located at an acute angle to the bed 1 for a and against the upright to prevent its turning on said rod while permitting saidV arms to do so.

53 is a plate secur-ed to and depending from the platerl, and it carries the half-nut 54,`

Figure 4, to engage with the feed screw 41; 55 is a screw threaded in plate 53, andmfreely entering a hole in the block 52 and it carries the spring 56 located betweenithe' plate 53 andfblock 52 to swing the carriage and disengage the nut 54 from the feed screw.`"57 is a' locke ing lever pivoted on the screw 58 and anchored to the block 52, for' lockhg the Cr..

riageagainst the reactionrof the spring 56, to be more fully described. 59 is the holder for the blade 60 and is'mounted von the block Y 52 f Y f Vith the carriage out of the control of the feed screw, it is manually moved towardthe rolls far enough to placea knife yblade at the entrance and between the open polishing rolls and also place the screw 61,v carried by the` plate 51directly'under the finger 62, .carried` by the vertical rod 36,.

With the'members thus placed, the treadle is depressed to bring the finger 62 forcibly;

against the screw,v 61 and tilt the carriage to vbring the nut 54* into engagement with the feed screw 41Fi-gure 4." .Thisinward/'Inove-- ment of thenut and plate 5,3 will permit the gravity lev`e1157 `to lie in front of the plater53, with its further movement-limited by the pinY 63, and thus'v maintain contact v of nut` and:

feed V.screw during the polishing operation.

Depressing the treadle will also.' force vdown bring the the bar-26 and boxes 5,6 and 7, to

upper roll against theblade. Owing to the connection of the short shaft 12 with the sleeve. R Y Y* Y .t in, cembinatlom a" bed, opposed.y.cy lindlal abrasive rollsmou'nted v v holding Carriage@ SuPpQrt-OP. th 'Carriage tion will also permit thespring 64, Figure'l, f `Vto swing the `pivoted lever 65 and lockit in its lower, position. As'ithe bar 66 connects the lever 65 with the trip'lever 67, the Vaction ofy lever 65 vwill yalso set said Y trip leverfvinlthe position shown during-the travel ofthe carriage.

As the Ablades areV subjected vto anexcessive gripping;

. soonshorten the life ofthe former, and also draw the temper ofthe latter. To avoidfthis freely mountonto thetreadleV pressure during-.their lengthwise travel throughthe rolls, and vtheir gradualV withdrawal therefrom, it is veryimportant that the point of Contact of the rolls with the i blades be centinuously Vchanged-to prevent; overheating the rolls andblades, as this will] r`l so that the outward travel of the knife holding carriage onthe feed screw will progressively change the gripping point of contact Y between'the rolls and blade.

When the blade has passed through the rolls, the trip 68, Figure 2, will strike the trip lever 67 and unlock the treadle lever 37 when the stored uptension in the springs 69, 70, and the springs under the bar 26, will return the triplever toits normal position, and the barcontrol barup against the Anuts 7l,-Figure 1 As the studs 30, 3l, and 32, are anchored respectively to thek boXes 5, 6, and 7, said boxes and' the upperfpolishing"y rollwill be carried up with the bar26 adistancesuflicient to freely ad- Amitthel entrance' of a knife blade between the. rolls. l v y.

Simultaneously/"with the release of the treadlf lever 37, .the gravity lever 57 Figure springs will carrysaid Y the carriage nd'halt its further travel.

abrasion members in different lines o f travel The essential feature of the presentinvention is ,ftevpass-th blade .th'reugh "opposedso and continuethe sepa-ratey movements untilj the imperfectionsA ofthe previewsV operations are eifectually brokenrup'andentirely ob` literated,v k Rolls, insteadfof wheels, aretlie indispensable ,elements in produong :the .de-

sired f results, for they, permitv .the blade to remain incontact with the rolls long enough to f Jfully* complete: fthe polishing operation,

blade `can be withdrawn any desired ,period gf the Y carriage-s travel,

and thus shorten or lengthenthe polishing operation' conformablywith thework l0-,be done. 1 Y

In amach,l 'e of thecharac-terdescribed,

therein', aknfefbiladef a rotatable feed' screw` journ'aledon the Asupport, means for ing 4the carriage, said feed screw so thatthe outward travel of the 'bladehold-` ing e carriage .will progressively change the 2f :1.11 knife..- ,bledfe ebredihe machine, "ifi combinationi,l a' 1 bed,

temporarilyfconnecting the' f feed. screw with .the carriage, l.automaticv tripping meansffor breaking the .ontaciy lie-e tween the .carriage and feed, screw `,and hallt-v offsetatan. acute' angle rwithy respeet; to themachin efrsbed c, Stande-rds 'lrivuntedrthereon,L OPRQSedJ, Cylindrical; abrasion rel-1S l mounted `inf-the 'Star1-de-rdlaaieksheft fieX-w ibly connected with one end of the upper. roll" i @slightly-.tilt @besserer-19111 te taper', the

faces of the blade when both rolls engage the blade, said upper roll and jack shaft journaled in spring supported boxes, a knife holding carriage, a support therefor, a rotatable feed screw journaled on the carriage and offset at an acute angle with respect to the bed, treadle mechanism for bringing the upper roll into operative engagement With the lower roll, and the knife holder into operm atve engagement with the feed screw.

In testimony whereof I afLX my signature.

JOHN FUSCO.

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