Патент USA US2408459код для вставки
Oct. '1, I946. _ w, H, THQMA5QN ' DRIVE MECHANISM Filed July- 15, 1944 2,408,456 , ' 2 Sheets-Sheet 1 \\\\' MM ‘Oct. 1, 1946. 2,408,456 w. H. THOMAS‘ON DRIVE MECHANISM Filed July 15, 1944 2 Sheets-Sheet‘ 2 .. J .15 25.“ / .. / .. m w.\\00$ 2 . \\\\\\\\\\\\\\\ \\\_\\\\\\\\\\\\\\\\ m_ J M , 1/2 7‘ I. ‘ . w ,0 .. , Il/1; // \\\\\\\\\ Patented Oct. 1, 1946 2,408,456 UNITED STATES PATENT OFFICE 2,408,456 DRIVE MECHANISM William H. Thomason, Margret, Ga. Application July 15, 1944, Serial No. 545,081 1 Claim. (Cl. 74-49) 1 2 .The present invention relates to new and useful improvements in drive mechanisms where it is l I and is provided with a roller l4 freely mounted on the pin while a pin I5 is eccentrically mounted on the gear [2 and is likewise provided with a roller I6 freely mounted on the pin I 5. A rod I1 is reciprocably mounted in a guide I8 at one side of the casing 5 and on the inner end of the rod is formed a head I9 slidably supported on the bottom of the casing, the head being of desired to convert rotary to reciprocating motion such as in mowers and various types of shears, as well as for use in combines, binders and other machinery and the invention has for its primary object to provide a drive mechanism of this character of simple and practical construction, elongated construction and having its ends curved which is efficient and reliable in use, relatively inexpensive to manufacture and otherwise well 10 outwardly as shown at 20 and 2| to provide con tacting edges for the rollers l4 and I6 of the gears adapted for the purposes for which the same is II and I2, respectively, during the rotation of intended. the gears, each of the rollers being timed to en Other objects and advantages reside in the de gage an adjacent edge of the head to slide or tails of construction and operation as more fully hereinafter described and claimed, reference be 15 throw the head in opposite directions whereby a reciprocating movement of the rod l‘! is produced. ing had to the accompanying drawings forming It will be apparent than any suitable cutter or part hereof, wherein like numerals refer to like other mechanism may be attached to the outer parts throughout, and in which: end of the rod I‘! where a reciprocating action Figure 1 is a side elevational view of the eas 20 thereof is desired. ing in which the mechanism is mounted. The casing 5 may be ?lled or supplied with a Figure 2 is a sectional view taken substantially suitable lubricant to reduce friction and facilitate on the line 2—2 of Figure 1. operation of the device. Figure 3 is a longitudinal sectional view It is believed that the details of construction through the casing. Figure 4 is a sectional view taken substantially 25 and manner of use of the device will be readily understood from the foregoing without further on the line 4-4 of Figure 3, and detailed explanation. ' Figure 5 is a fragmentary perspective view of Having thus described the invention, what I the driven head on the reciprocating member. claim is: Referring now to the drawings in detail where Means for converting rotary into reciprocating in for the purpose of illustration I have disclosed 30 motion and comprising a pair of shafts, means a preferred embodiment of the invention, the nu for driving one of said shafts, interengaged gears meral 5 designates a casing having bosses B on secured to the shafts for rotation in opposite die its opposite sides in which shafts ‘I and 8 are journaled. rections, a slidably supported member including a laterally projecting head and means eccentri To one end of the shaft 1 is secured a pulley cally carried by the gears and engageable with 9 adapted to be driven by a belt or other drive opposite edges of the head to move the latter in means ID. opposite directions, said member being slidable in A spur gear I l is secured to the shaft 1 within a ?xed path, said means last-mentioned compris-' the casing engaging a similar gear l2 also posi ing a pair of rollers revolved by said gears into tioned in the casing and secured to the shaft 8, engagement with said head alternately and each the gear ll being driven in a counter-clockwise disengaging said head when the other is engaged » direction while the gear I2 is driven in a clock wise direction as shown in Figure 3 of the draw ings. therewith. . A pin I3 is mounted eccentrically on the gear 45 WILLIAM H. THOMASON.