US2654187A - Sickle bar sharpening implement - Google Patents

Description

Oct. 6, 1953 L. T. FERRIN SICKLE BAR SHARPENING IMPLEMENT Filed April 14, 1951 2 Sheets-Sheet l' F I G -l a" g a a Snventor Lester I Ferrin Oct. 6, 1953 L. T. FERRIN 2,654,187

SICKLE BAR SHARPENING IMPLEMENT Filed April 14, 1951 2 Sheets-Sheet 2 3nventor Lester T. Fern'n Patented Oct. 6, 1953 UNITED STATES PAT ENT- OFFICE 2,654,187 v SICKLE BAR SHARPENING IMPLEMENT V Lester T. Ferrin, Tonasket, Wash.

Application April 14, 1951, Serial No. 221,080 3 Claims. (01. 5136) My present invention relates to tools andmore particularly to a sickle bar sharpening implement.

' One object of the invention lies in the provision of a frame which is adapted to receive and clamp in position for sharpening, a sickle bar of the common well known design.

Another object of the invention lies in the provision of a'carriage movable longitudinally upon the frame and which carries an electric motor and grinding wheel for successively sharpening each tooth of a sickle bar.

Another object of the invention lies in the provision of the carriage with spaced track rollers "united by means of an underslung U-shaped frame which supports transversely extending spaced guides adapted to slidably support a base or mounting plate upon which the motor and grinding wheel are suitably mounted and operably connected together.

Another object of the invention lies in the provision of an implement of this type which is simple to manufacture and may. be produced with facility at a, low cost and which is very useful and capable ofperforming the function of sickle bar sharpening.,, V V v 1 c v e Other objects will be apparent during the course of the following description.

In the drawings, forming a part of this application, and in which like numerals are employed to designate like parts, i

Figure'l is a perspective view of my improved sickle vbar sharpening implement with one leg broken away forconvenience. of illustration,

Figure 2 is a transverse cross section taken through the implement central of the carriage and with the motor shown in elevation,

Figure 3 is a plan view of the carriage and fragments of the track and a parallel sickle bar, and,

Figure 4 is a perspective view of the U-shaped frame having its spaced transversely disposed guides secured thereto and with the track rollers removed.

Referring now more particularly to the drawing, I have shown in Figure 1 a frame comprising inverted U-shaped angle iron end portions 5 and 6 each of which has downwardly disposed outwardly spread legs 1 united at their top ends by a horizontal section 8 of the angle iron from which the legs are formed. The angle iron is positioned with flange 9 arranged to dispose a flat face 9 outwardly and a flange N is thus disposed inwardly. Suitable braces II are secured as by rivets, or other suitable means, to the flanges I0 v, 2 v of the legs I substantially midway their length and angle upwardly to a point midway the length of a companion horizontal section 8 and are there secured in overlapping position by means of a single rivet or bolt.

vA longitudinally extending clamp-ing bar I2 is formed of angle iron and is secured at each end to a horizontal section 8 adjacent the front leg I of spaced end portions 5 and 6. The clamping bar l2 ispositioned with its depending flange l3 on the inner edge and its lip extending forwardly therefrom and disposed in a horizontal .plane. This necessitates its being secured in face to face relation with the under side of flange 9'.

Angle braces l2 are secured between the clamping bar flange l3 and the front leg flanges 9 to lend rigidity to the clamping bar and support the front legs against-longitudinal pressure on the frame.

Rearwardly spaced from clamping bar l2 and in parallel relation thereto I have provided a tubular track 14' secured upon the upper face 9' of horizontal section 8 of each end portion 5 and 6 by means of bolts and the track 14 is forwardly spaced from the juncture of rear legs I and their companion horizontal sections 8, to maintainthe motor and carriage weight within'the vertical plane of the lower end of the two rear legs I and preclude unduly spreading the legs I.

Spaced track rollers I5 are provided with concave faces adapted to conform to the tubular track i4, and these track rollers are bearinged on stub shafts [6 supported in inwardly, disposed aligned bosses ll carried by upwardly extending ears [8 which are a part of and extend from the U-shaped body l9 of the carriage frame 20.

Transversely extending spaced parallel angle bars form guides 2| with their horizontal supporting lips 22 disposed in inwardly opposed relation and with their vertical flanges 23 extending upwardly at the outer edge of said lips. These guides thus permit transverse sliding movement of mounting plate 24, but confine the longitudinal movement with relation to the carriage frame. Longitudinal movement of the carriage is permitted when desired by movement of the rollers along track 14.

Secured on the mounting plate 24 of the carriage, I have provided an electric motor 25 suitably switched at 26 in the power supply cord 21. A belt pulley 28 is provided on the motor shaft and a belt 29 is trained about said pulley and also about a second pulley 30 mounted on grinder shaft 3| rotatably mounted in spaced self aligninwardly and their beveled edges upwardly dis:

posed and clevis clamps 36 are then positioned to clamp the sickle bar to the clamping bar- With the motor driving the angle-faced grinding wheel, the carriage is moved by grasping the handle and raising the grinder above the leyel of the sickle bar. The mounting plate 24 is then slid forward in the guides 2! to position the grinder wheel directly aboye the teeth to be sharpened. "The 'car'riageis then permitted to tilt downwardly in front until the grinding'w'heel contacts th teeth and upo n'con'tact the mount ing plate is slid rearwardly causing the wheel to sharpen'the'fu ll bevel surface of the two adjoining i edges' of adjacent teeth. The carriage is then niovedlopg'itudinally on the frame to position the grinding wheel. above the next successive adjpi nmg teeth Idr refl ct n the am a peni o ergl iqfi."

Having thus described my invention what 1. claim as new and desire to secure by letters Patent is:

1 A man l cont led 9 5 er sh en m l men want n a sep rtin r e aving e d pbrt oli mime-qt r ad rom and rear supporting legs on the end portions; a horini sectipn n ng he upper ends 9T semn n s a damn he ha in a m @1 pgsd i horize ta'l ee? extend be ween id n n rti 'an l 'eb e 9 s id erizonte ec ns ad a said imnt l s a wi ner track u e l t aid n r z tal sec on eras ra pla s said dampin her: alq 'siih'a 'm able tr ms; concave w s s on sa d ra t and u ort ng s id m abl ir 2 transversely 'o itis esl singed gu des en. the l am a equatin late ha in a h n l nd si ms' hl im an e in d 1 weeters? ncr m wi h pa e 9 s d m rb e iran "s iq'mqv able nam are, HlQQPfiPE are be n r tiel 'filtahle t elet gn W ai iiiin tie Irene: a met r e um s; 9 'eais mounting plate; an angle-faced grinding wheel rotatably mounted on the under side of said mounting plate; belt means for transmitting r0- tary motion from the motor to the grinding wheel; and clevis clamps for clamping a sickle bar in a horizontal plane to said clamping bar, whereby a sickle bar may be positioned for sharpening by said grinding wheel.

2. In a sickle bar sharpening implement havn a su po tin me. a a re e e mounting plate carrying a rotatable grinding wheel, a carriage moveable longitudinally on the e treme and adapted to support said mounting plate comprising a U-shaped body adapted to encirclea portion of the frame, spaced rollers carriedby said body and disposed to roll on a part of said supporting frame, and spaced guides rigidly secured on said body transversely of the diregtign pf movement and adapted to slidably support said mounting plate.

3.- mentall ontm led 5 2 15 be? temmin plem nt eeei ris l am epi rti s 91 bular track, means carried by -the framefor reasebly s cu i a s ek a in swi smta an Tami n traced a a el e eiiq to said a k, a em lon itud n l y m vab e l in the track and secured against transverse movement e on ren r el ei d e ide 9 then??- ble frame a m untin p at e'tip ee blr meu ir d i ai gu d sai mova l It ms a in ttm p at b g ti all 't tab e a rin. n

Wheel 'rotatab'ly enn ed tn s id memi ihg ie-$ 5,

anual op a hand e .1 said P ats whereby means Q tatin sa d rindi g wheel, and a i the grinding wheel may he suceessiyely positigneg o s ar en he e h 9 a ickle bar- L ER Ref -eas Ciiefl i t e @31 Q? thi Pa ent UNITED STATES Pg TEN'ps Number Name Date 411,043 McGregor Sept. 17, 1889 13,42,381 Bole Jan. 16, 1923 2,088,,202 Borck July 27, 1937 2,142,669 Carpenter Jan. 3, 1939 2,180,911 Rogers Nov. 21, 1939 2,187,289 Utterback Jan. 16, 1940 2,418,737 Talboys Apr. .8, 194-7 2556,82? Greeley -Dec. 21, 1948 ,282,935: Rainbolt .et a1 Sept. 27, 1949 2,520,210 Howell Aug. 29, 1950 2,562,578 Rickman July 31, 1951 2,572,530 Smith Oct. 23 1951 2,583,758 Webber Jan. 29, 1952

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