US979879A - Blade-sharpening machine. - Google Patents

Description

F. P. oLDs. l BLADE SHARPENING MACHINE.

APPLIUATION FILEDLAPB. 19| 1910.

979,879. Patented Dec. 27, 1910.

F. P. OLDS.

BLADE` SEARPENIN G MACHINE. APPLIOATION FILED M3119, 1910.

Patented Dec. 27, 1910.

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Ef/@M nrrn sA'rEs TENT onirica.

FREDERICK OLDS, OF IBIEREA, OHIO, ASSIGNOR OF ONE-HALF TO WILLIAM F. WIELAND, OE BEREA, OHIO, AND ONE-HALF TO H. LEICK, OF CLEVELAND,

OHIO.

IBLADE-SHARPENING MACHINE.

Specification of Letters Patent.

Patented Dec. 27, 1910.

This invention has reference broadly to aV blade-sharpening machine in which the blade-clamping member may be automatically reciprocated in a direction transversely of a longitudinally reciprocable abrading member.

Other features, each in its coperative relation, contribute toward making the invention as such comprise the combination of several lspecific improvements upon the blade-sharpening machine shown, described and claimed in Patent No.945,137, issued to me January 4, 1910; such improvements consisting in turn of means hereinafter fully described and particularly set forth in the claims.

The annexed drawings and the following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of' various mechanical forms in which the principle of my invention may be employed.

In the said annexed drawings Figure 1 is a plan of myv complete machine, Fig. 2 a side elevation with one feature omitted, Fig. 3 an enlarged plan of certain automatic mechanism, Fig. 4 a vertical section on line IV-IV of Fig. 3 looking in the direction of the arrows, Fig. 5 is an enlarged view of .the clamping mechanism, and Fig. 6 is an enlarged vertical section of a part of such clamping mechanism.

In these several views llke letters and numerals of reference designate similar parts throughout.

A suitable elongated base-block A has mounted upon it two side plates a, and each of these is provided with an inwardly dis. posed groove. These as oppositely disposed form a channel which is adapted to serve as a guide-way for the base flanges b of the carriage B. This carriage is constructed in such a way that it`will properly holdthe standard type of whet-stone abrading member b', and upon one side is provided with an actuating pawl b2, as shown. This pawl is laterally movable with respect to the carriage and against the action of the spring b3. The specific use of the pawl in its relationshi to my construction will in due time be disc osed.

Upon one end of the machine I mount a crank vshaft C, and this, besides bein@ provided with any conventional type of gear wheel c and handle c', is operatively connected to the carriage B through the medium of a pivoted connecting rod 02. In Figs. l and 2 another shaft c3 will be seen mounted across the machine upon two upwardly projecting bosses a2. A gear pinion c4 mounted upon one end meshes with this gear wheel c,

A while on the other end, that is, on the opposite side of the machine, a circular grindstone c5 is provided. The latter has a pulley c aixed upon its exterior face, and for a perfectly obvious purpose. It is accordingly apparent that the turning of the crank will rotate the stone c5 and simultaneously impart a sliding reciprocable motion to any abrading member in the carriage. Further, the machine is manually operable on one side and power-operable on the other. Upon the opposite end of the y.frame and specifically upon two lupwardly extending standards a which form its bearings, I mount a rod D. Two lever arms Z support a connecting handle d andalso incloslng an integral eccentric collar d2 are oscillatorily mounted upon the rod D. This collar serves to effect the clamping of the blade in conjunction with cooperative parts presently more particularly explained. The length of the collar'is suiiiciently less than the length of the rod to permit of its being slid laterally, that is, in

the direction of its axis, and in fact a distance corresponding approximately to the width of the abrading member in the reciprocable carriage B. Between the lever arms d and so necessarily mounted upon the adjustment by means yofthe set screws e', whereby bladesvaryin'g in thickness may be more readily accommodated. The. depend- Aing arm da is adjustably secured to one ofthelever arms d, for an operative purpose to be presently noted.

. A nod F assesthroug'h the vhandle d and by reason o its being somewhat longer, projects a suiicient distance to permit two other lever arms f to be likewise and in turn oscillatorily mounted upon it. These arms support a second clamping mechanism comprismg the rest-plate f and set screw f2, and between which a chisel blade X- may be read-l ily clamped,.as clearly represented in Fig. 2.. A loose collar f3 for the 'rod F is interposed between the lever arms' f, while the end vof the rod F is threaded to receive a wing-nut4 imparted t ereto.

` Mounted upon an ear as approximately midway of the length of the machine, and as shown in the path voit-movement of the pawl b2 is a horizontally disposed ratchet G. A spring detent properly disposed upon the frame and 'a jacent to the ratchet G engages the'latter to serve its well-'known' and customary function. Upon th'eupper face of this ratchet I secure two parallel and under-cut members g adapted to form a slide-Away, for aypurpose to become hereinafter a parent.

(if) and gear pinion o* and specifically upon another ear a4, I pivotally mount a bent lever H. This lever is'slotted at h, as is best seen in Fig. 3, and .is devised to extend across, so that the slotted portion will rest upon, the member g. on the upper face of-the ratchet. A wing-screw h in passing throu h the slot h to -coperate with a suitably eveled binding nut h2 in the slideway, is adapted tox the lever H in various positions eccentrically with respect toI the axis of the ratchet. In this-way, the free end It* of the lever. I -I may be given, when -the ratchet is rotated, any reci rocatory stroke desired, as should-be =readi y understood. This free end 71.-* of the lever H carries two uprights ha betweenwhich the depending 'arm' d is capable of being adjusted,

and for the obvious purpose of transmitting the reciprocation of the free end L, to the clamping mechanism.

The operation of the parts already described insofar as they relate to the antomatic feature of this invention'is as follows.: The turning of the shaft C either dimove the clampin at which the rotar Intermediately of the combination of 'Ja reci rocable abrading rectly by hand or indirectly by' power,l applied to the` ulley on the stone and then' transmitted t rough the medium of the; shaft 0.3 and gear pinion c* will reciprocate the carifiage B -and-incidentally the pawlb'*l y'The latter willv las positioned engage the ratchet' upon each revolution of the shaft C, and in so\ doing intermittently rotate the ratchet yGr a predetermined number of teeth. Consonantly, lthe `ratchet will intermittently mechanism to one side or the other until t e connection between the ratchet and lever passes beither one of the two dead centers, at which point the lateral direction of such movement begins to reverse. In this manner the desired reciprocable movement is intermittently or automatically imparted tothe clamplng mechanism. This assurance of a steady and uniform lateral movement of a blade upon an abrading member simultaneously with the longitudinal reciprocation of the latter,

must and does produce an absolutely true bevelededge upon the blade, and moreover. wears the abrading member in a way that necessarily maintains a at uniform surface at all times. Upon that side of the machine p stone 0 is situated, I

attach @standard ada ted to support an l adjustable'tool rest N. y improved connotedjthat my machine. entire of which, however, concur in purpose toward struction of tool rest (permits 'a multiple' ad.- justment thereof, an specifically @a move-v ment of the rest N in Afive distinct directions with relation to the stone 10. This constitutes, however, the subject matter ofl andivisional application under evendate here-y with.

It will be the accomplishment of a single object,

namely the perfectionofminute and exact adjusta ility of any blade to be vsharpened with respect to the abrading member. This ready ada tation to meet different conditions insoga'r contributes to heighten the serviceableness by lessening the probabilit of improper or atbest indeterminate grin in results. p

aving fully described my invention, what I claim and desire to .secure by Letters Pat-` vlfIn a blade-sharpening machine, the combination of a reci rocable abrading member; means for lefectmg such reciprocation; a clamping member;`and means for automatically effecting the movement of said clamping member.

2. n a blade-sharpening machine,`the

member; means forv efectmg such reciprocation; a clamping member.; and operatively connected means, includin a lever and a ratchet for automatically e ecting the reciprocation of said clamping member.

8. In a blade-sharpening machine, the combination of an abrading member; a clamping member; and means operatively connecting said members, whereby the reciprocation of one effects the transverse movement of the other.

4. In a blade-sharpening machine, the combination of an abrading member; a clamping` member; and means operatively connecting said members, whereby the reciprocation of the former effects the intermittent transverse reciprocation of the latter.

5. In `a blade-sharpening machine, the combination of a suitable frame; an abrading member; means for reciprocating it longitudinally; a pawl secured to said member; a ratchet mounted in the path of said paWl; a clampingmember slidably mounted across said frame; and means comprising a lever operatively connecting said ratchet and clamping member, whereby-the rotation of the former effects the reciprocation of the latter.

G. In a blade-sharpening machine, the

combination of a suitable frame; an abrading member; means for reciprocating it longitudinally; a paw] secured to said member; a ratchet mounted in the path of said paWl; a clamping member slidably mounted across said frame; and a lever connecting saidv ratchet, eccentrically of its axis, with said clamping member, whereby the rotation of said ratchet eiects the reciprocation of said clamping member.

7. In a blade sharpening machine, the combination o f an oscillatory blade-clamp ing member; a second blade-clamping member oscillatorily mounted upon said firstmentioned clamping member; and means for lixing said second member against oscillation.

Signed by me, this 12th day of April, i910.

FREDERICK .1). OLDS.

Atte'sted by- CURT B. MUELLER, l FRED H. LEICK.

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