US1555703A - Thrasher - Google Patents

Description

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THRASHER Filed April '2, 1925 s Sheets-Sheet 5 Q umTus images Qumwus.

Patented Sept. 29, 1925.

PAUL QUINTU-S Ann CHARLES QUInTus, or GARNER, IOWA.

T-HRASHER.

Application filed April 1 1925. Serial No. 21,346,

To all whom it may concern:

Be it known that we, PAUL QUINTUs and CHARLES QUINTUS, citizens of the United States,- residing at Garner, in the county of Hancock and State of Iowa, have invented certain new and useful ln'lproven'ients in Thrashers, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to thrashers and more particularly to the feeding mecha nism thereof.

An important object of the invention is to provide a feed conveyor governor positively disconnecting the feed conveyor at any time during the operation of the machine when the amount of grain fed by such conveyor is in excess of the amount drawn away by the cylindelu A still further object of the invention is to provide a device of this character in which the disconnecting means during ordinary operation, provides a positive drive as differentiated from the ordinary friction drive for the feed conveyor. 1'

A still further object of the invention is to provide a device of this character in which the effectiveness of the internal conveyors feeding the grain and straw to the cylinder is increased during that time when the feed conveyor is disconnected.

A- still further object of the invention is to improve the governor controlling the operation of the feeding mechanism so that a positive driving connection is provided at all times during operation and so that the transmission" of shocks and jars to the Ina= chinery when the governor is thrown in operation is prevented.

A still further and nrorespecific object of the invention is to" provide a drive for the feed'conveyor which, when the feed becomes choked is intern'iittently disengaged to-' gether with means for adjusting the saine to determine the period of such disengagemeat,

- These and other ohjectswe attain by the construction shown in the acconipa-nyingv drawi ngs,wl1erein for the purpose of illustration is shown a preferred elnbodin'lent of our invention and wherein:

Figure1 is a view partially in section of feeding apparatus of thrasher constructed in accordance with our invention;

Figure-- 2 is an enlarged detailed view showing the driving mechanism of the feeder and one face of thegovernor;

Figure 3is an elevation of the opposite face of the governor;

Figure 4 is a vertical sectional View through the governor Figure 5 is a top plan View of the upper conveyor;

Figure 6 is a similar View of thegrain Pan; a

Figure 7 is a detailed sectional view on the line '(7 of Figure 2; and i a Figure 8 is a section on the line 8'8= of Figure 3. i i

Referring now more particularly to the drawings, the numeral 10 generally designates an upper conveyor, 11 a lower conveyor, 12 a grain band discharging to the concaves 13 and cylinder 14. The feed con veyor is generally designated at 15 and arranged above this feed conveyor is a band cutter shaft 16 having theu'sual cutters 17 and driven from any suitable source of power (not herein disclosed).

Arranged rearwardly of the band cutter shaft 16- is a counter-shaft 18 from which the upper conveyor crank shaft 19 is drivenby a sprocket chain 20. To the counter' shaft 18' is pivoted the forward ends of a pair of arms 21 to which adjacent these forward ends, the bearings 22 of the upper conveyor crank shaft 19 are secured. The rearends of these arms extend through vertical guides 23 so that these rear ends'inay elevate when excessive pressure is appliedalgainst the lower face of the conveyor 10; This conveyor 10 is formed of a plurality of slats 2 1 having upon their upper surfaces adjacent their upper ends a bearing 25 receiving one of the cranks 26 of the crank shaft 19. The conveyor inclines re'arwardly and has the lower ends of the slats 24 slung in pivot links 27 permitting longitudinal movement of the slats and permitting ver tical elevation of the upper or forwardends thereof.

The lower conveyor 11 is of the ordinary belt typeand has its forward end arranged beneath the rear end of the feed conveyor 15.- The drive shafts 28 and 29 of the lower conveyor 11 and feed conveyor 15 are ar ranged at adjacent ends of theseconveyors and adjacent these shafts, a second counter shaft 30is disposed. This counter-shaft 30 is connected with the counter-shaft 18 by a sprocket and chain connection, generally designated at 31, and the second countershaft has secured thereto a pair of gears 32 and 33 of which the gear 32 meshes with the gear 34 secured to the lower conveyor drive shaft 28. The gear 33 meshes with the gear 35 of a governor mechanism 36, more clearly shown in Figure 2.

In this figure, it will be seen that the gear 35 is loosely mounted upon the shaft 29 and upon this shaft 29 is keyed a hub 37 having a pair of oppositely directed arms 38, 39, and a third arm 40 directed at right angles to the first named arms. The inner face of-the gear wheel is provided with a series of circumferentially spaced teeth 41 adapted for coaction, with a dog 42 formed by the inturned end of a lever 43 pivoted inter mediate its ends, as at 44, to the arm 39 and having its opposite end, indicated at 45, projecting beyond the periphery of the gear wheel. This opposite end 45 is connected with the arm 40'by a. spring 46 which at all times acts to urge the dog end 42 of the lever 43 into engagement with the lugs 41 and so connect the hub 37 and shaft 29 to the gear 35 for rotation therewith. Upon the arm 38 is mounted a lever 47 similar to the lever 43 with the exception of the fact thatlit is not provided with a dog similar to the dog 42 and this lever is connected with the lever 43 at points at opposite sides of the pivots of the levers by links 48' so that these levers'move in unison.

It will be obvious that if the rotation of the gear wheel is in the direction of the arrow A of Figure 2 and anything is interposed in the path of the arms 45, 45, of the levers 43, 47 each engagement of one of these levers with this obstruction, the inner end or dog 42 of the lever 43 will be disengaged fromsthe lugs 41 and the gear 35 permitted to rotate without imparting its rotation to the shaft 29v and conveyor 15. Such a means is provided by pivoting to the wall of the thrasher, as at 49, a lever 50, one end-of which, indicated at 51, is arranged above the gear wheel, the opposite end of which has directed therethrough a bolt- 52, the upper end ofwhich is directed through one of the arms 21 and has engaged therewith at-the upper surface of the arm an adjusting nut 53. The end5l of this lever, when the arm 21 is depressed, is ar-. ranged beyond the path of rotation of the outer ends 45, 45, of the levers 43, 47, and no engagement with these levers is had. When, however,.the arm '21 is elevated, cor responding elevation of the rear endof the lever 50 takes place with the result that the front end thereof is depressed and arranged in the path of the ends 45, 45, of the levers. Ateach one-half revolution of the gear, the engagement ofthe dog 42 with the lugs 41 may be released and rotation of the shaft 29 checked until the arm 21 again lowers to release the engaged lever. Attention is directed to the fact that during this period, the entire weight of the upper end of the upper conveyor is placed against grain between the upper and lower conveyors so that the efiiciency of the upper conveyor at this time is increased and the feed of grain to the cylinder 14 will be correspondingly in creased.

The driving connection between the shafts 18 and 16 includes a sprocket 54 secured to the shaft 18 and a sprocket 55 loosely mounted on the shaft 16 and connected with the sprocket 54 by a chain 56. Arranged upon the shaft 16 adjacent the sprocket 55 is a governor disk 57 which is keyedto the shaft and upon the outer surface of'which is rotatably mounted a rim 58. This rim 58 has upon the surface thereof adjacent the sprocket gear 55 a, pair of outstanding lugs 59 provided with circumferentally directed openings 60. To the sprocket gear is secured a pair of diametrically opposed radially directed arms 61, each having at its outer end. a circumferentially extending arcuately bent guide rod 62, the ends of which are directed through the lugs 59 and these arms have mounted thereon springs 63. Each arm has its guide rod 62 directed through the lug 59 lying rearwardly thereof as regards the direction of rotation which 'is expressed by the arrow B of Figure 3. The opposite face of the governor has an out-- standing rim 64 provided upon its inner face with lugs 65. The disk 57 has a corresponding outstanding flange 66'opposing the rim 64 and to the disks are pivoted a pair of governor arms 67, the free ends of which are weighted, as at 68, and connected by a tension spring 69 in such manner that they are drawn toward oneanother and toward the center of the disk. Each governor arm has secured thereto a drive dog 70 directed through an opening 71 formed in the flange 66 and which, when the governor arms are in the expanded position, extend into the path of the lugs 65 and between two adjacent lugs so that the disk and rim are locked to one another for rotation.

It will be obvious that this type of governor will provide for positive connection and disconnection of the driving'disk and the rim so that at all times when the speed of the drive is suflicient to operate the thrasher, the governor will be in operation. This structure has a decided advantage over the ordinary friction governor in that it requires no setting to differentiate between different types of grain. It will be obvious with the friction type of governor it is impossible to employ the same adjustments when using wet tough grain as is provided when the grain is dry and lightand easily handled whereas with a governor of this type, a single adjustment is all that is necessary. In the transmission of the drive to the sprocket wheel, if the sprocket be under load, the shock of initial movement is taken up by the spring 63 so that a gradual starting of the load is provided for, thus preventing breakage and excessive wear on the. parts.

Since obviously the construction hereinbefore set forth is capable of use with practically any type of thrasher and in its adaptation to different types of thrashers, it will have to be to a degree modified and altered, we do not limit ourselves to such specific structure except as hereinafter claimed.

lVe claim 1. In a thrasher, in combination with a driven band cutter shaft thereof and feeding mechanism associated with the band cutter shaft for feeding the thrasher, a gear loosely.

mounted upon the band cutter shaft and op eratively connected with the feeding mechanism to drive the same, a governor on the band cutter shaft having a part fixed to the shaft and a part loosely mounted thereon, the governor embodying centrifugal elements positively connecting the sections thereof when the shaft attains a predetermined speed and a yieldable connection between the loosely mounted governor part and the gear.

2. In a thrasher, in combination with a driven band cutter shaft thereof and feeding mechanism associated with the band cutter shaft for feeding the thrasher, a gear loosely mounted upon the band cutter shaft and operatively connected with the feeding mechanism to drive the same, a governor on the band cutter shaft having a part fixed to the shaft and a part loosely mounted thereon, the governor embodying centrifugal elements positively connecting the sections thereof when the shaft attains a predetermined speed, and a yieldable connection between the loosely mounted governor part and the gear, comprising an arm secured to said gear, a pair of lugs carried by the loosely mounted part of the governor and arranged in the path of said arms and springs interposed between said lugs and the ends of said arms.

3. In a thrasher, in combination with a driven band cutter shaft thereof and feeding mechanism associated with the band cutter shaft for feeding the thrasher, a gear loosely mounted upon the band cutter shaft and operatively connected with the feeding mechanism to drive the same, a governor on the band cutter shaft having a part fixed to the shaft and a part loosely mounted thereon, the governor embodying centrifugal elements positively connecting the sections thereof when the shaft attains a predetermined speed, a yieldable connection between the loosely mounted governor part and the gear comprising an arm secured to said gear a pair of lugs carried by the loosely mounted part of the governor and arranged in the path of said arms and springs interposed between said lugs and the ends of said arms, said lugs having circumferentially directed openings, said arms having arcuate guide rods directed through the opening of the coacting lug and about which said springs are mounted.

In testimony whereof we hereunto affix our signatures.

PAUL QUINTUS. CHARLES QUINTUS.

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