US2457259A

US2457259A - Disappearing tooth bars for concaves

Info

Publication number: US2457259A
Application number: US563279A
Authority: US
Inventors: Fred M Moll
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-11-13
Filing date: 1944-11-13
Publication date: 1948-12-28
Anticipated expiration: 1965-12-28

Description

Dec. 28, 1948. MQLL 2,457,259

' DISAPPEARING TOOTH BARS FOR CONCAVES Filed Nov. 13, 1944 Y 4 Sheets- Sheet 1 M 5 INVENTOR I FRED MATHIAS MOLL BY r ATTORNEYS Dec. 28, 1948.

F. M. MOLL 2,457,259

v DISAPPEARING TOOTH BARS FORCONCAVES Filed Nov. 13, 1944 4 Sheets-Sheet 2 INVENTOR FRED MATHIAS MOLL ATTORNEYS Dec. 28, 1948, F. M. MOLL 2,457,259

' DISAPPEARING TOOTH BARS FOR. CONCAVES Filed Nov. 13, 1944 4 Sheets-Sheet 3 @mmmfiw m w mm @m mmwwm w @m @mm m INV'ENTCR FRED MATHIAS. MOLL ATTORNEYS Dec. 28, 1948. F. M. MOLL' 2,457,259

, DISAPPEARING TQOTH BARS FOR CONCAVES Filed Nov. 13, 1944 4 Sheets-Shea 4 INVENTOR FRED MATHIAS MOLL ATTORNEYS Patented Dec. 28 1948 "DISAPPEKRTNG TOOTH BARS FOR -'00NCAVES Fred Moll, West. Bend, Wis.

"Application November 13, 1944,"Serial No. 563,279

' -.%3'Glaims. 1

This invention appertains to threshing ma- '-iili-ines and more particularly to a "novel concave "therefore.

In threshing different kinds of grain, it-is-high- "ly' desirahie, in "order "to obtain best results, to

change'the' concave bars and teeth 'accordirrgto the character and type of the -'-grain "being 'threshed. With "the modern threshing machine, the-changing of the concave bars and -teeth is a difii'ctilt, tedious and time-con'suming job.

"-Itis, therefore, one or the primary objects of my invention to erovide rockaihle toothed bars ior the concave with means for rocking the *bars from *t-he exterior of the threshing machine,

whereby the desired number of toothed bars can be "conveniently and expeditiously operated to brhrg-the teeth into andout df play. 7

fhnolth'er salient nbject of my invention is to provide novel 'rn'ean's for forming the rocking tooth hars'of -a--'concave,:?so-tha-t when the bars are rocked to "move the teeth to an inoperative position, the teeth of one loar will be received in grooves or "notches-of the adjacent bar, whereby not only 'will said teethhe protected, but whereby theiteeth can he'movedto an extreme lowered desired position to form. an 'e'fiective grate. A iurtherimportant object of'myinvention is to provide novel means for supporting the rock able bars, whereby said bar-scan be conveniently :removed when necessary or desirable Without dismant'iing the cylinder and concave.

.A .still tur'ther important. object of my inventionis the provision of novel plates formed on or carried Joy the bars adapted to be brought into ran operative position toward the .arcuatei ace of :a concave, when the teeth are in their lowered position, whereby to increase the -efficiency of .said loars as-a-grate.

I these and other voba'ects in view the invention consists in the novel construction, arrangement and formation :of parts, as "Win he hereinafter more specifically described, claimed and illustrated in the accompanying drawings, :in which drawings:

Figure l is a fragmentary vertical longitudinal sectional view through athreshing machine showing the cylinder andlconcave portion, the

view being taken substantially vonthe line .-ll of Figure 5 looking in the direction of the arrows. 7

Figure 2 is a view similar to Figure l'with the cylinder removed and all of the rockable sgrate ihazrs moved-to their lowered position.

Figure 3 is a ..fragmentary side elevation-all view of a "threshing machine showing the :finean-s ifor rocking thegrate bars.

Figure 4 is an enlarged fragmentary detail sectional View taken on the line 4-4 of Figure 1, looking in the direction of the arrows illustrataway xafrom the cylinder :cam :22 extends heyond one outer side :face

ing my novel rmounting for the rockable grate bars and bhe grate plates "carried thereby.

F-igure 151.1 .a horizontal section takensubstantially on 'tlrefline ':5-15=.of Figure 1, looking :in the direction ofit'he arrows, showing my novel {grate bars and the operating "means therefore.

jiFi'gure "6 "is :an enlarged fragmentary :detail sectional view illustrating a modified form of any invention showing Ea rsmgle mea'ns .for simultaneously racking :a :pair or toothed .ba-rs.

:F'igure '7 iis a view similar to Figure 6, hutnshowin'g the grate bars actuated'ito move the teeth to a loweredfinoperatiweposition.

nheteriiing to the 'cdrawings in :detail, wherein similar reference characters designate correspending partstthtou-ghout the several views, the deoter C generally indicates my improved conoiaizei or a threshing machine T.

@IIfly a nsnfii'cient portion of the threshing ma- !I hasiheen :shown to "iilustratethe novel te'atuives of :my concave, "and as i-iilustrated, the threshingzmachirre includes the usual side :irame plates 1'0 and it which support the cylinder 12 are rocleahly supported at one end "on a cross bar 26 carried by .a'the frame of the threshing machine and the opposite ends of the castings are supported :by 2!. These cams are keyed :or lothrerwise secured to a transversely extendling cam shaft =22 rotatable mounted on the frame tot thethreshing machine. -By turning theshait, the entire concave can be adjusted toward and "One end of the of the "threshing machine and is provided with .am npenat'ing irandlev-oracrank 23. Arratchet wheel 2:24 dog 25 :can be provided for holding the cam shaft-in :-a preferred adjusted position.

brought out :in the objects of the specifiicait'i'on 'the roclzable gratevbars d8 formthezsa-lient "teatime of invention and :as illustrated these received in bearing sleeves 28 which are threaded in the side concave casting plates I-6. By this ar.

rangement the bearings can be threaded outwardly to move the same away from the bearing pintles, so that the bars can be dropped. To facilitate the movement of the grate bars out-of the side casting plates I6 said casting plates can be grooved or slotted as at 29 below the bearing sleeves.

In view of the fact that the toothed bars I 8 are rocked from the exterior of the threshing machine; it is necessary to have the bearing pintles 27 on one side relatively longer than the bearing pintles on the other side and the longer bearing pintles extend slightlybeyond one side face of the threshing machine and have removably keyed thereto operating cranks 30.

In removing the rockable grate bars, the cranks 30 are first taken off of the pintles and bearing sleeves are threaded outwardly on both sides'until the shorter bearing pintles can be slid downwardly and out of the bearingsleeves after which the longer pintles are slid from out of their bearing sleeves.

Any preferred means can be provided for operating the rock bars, but as shown in the drawings, I provide operating levers 3|.for the cranks 30. Each of the levers can terminate in an operating handle 32 and obviously by pulling the levers back and forth the bars can be rocked. In order to hold the levers in an adjusted position with the rock bars either in their operative or inoperative position the lower edges of the levers 3| are provided with notches 33, and these notches can be moved into engagement with a lock angle bar 33 carried by the frame of the machine. A slotted guide bar 34 can also be provided for facilitating the correct movement of the levers.

When the levers 3| are pulled forwardly with the cranks in their dotted line position shown in Figure 3, the rock bars I8 will be so positioned that the teeth 26 will be in a raised operative position. Hence, the teeth will project toward the cylinder I2. When the levers are positioned rearwardly, the cranks 30 will be moved to the full line position shown in Figure 3 and the bars clearly shown in Figure 2. Hence, the bars I8 can be of theusualwidth and still permit the effective lowering of the teeth. The grooves 35 also form 36 will be raised to an operative position.

In some instances it may be advisable to operate pairs of the bars I8 in unison and to only provide one operating lever for two bars. In Figures 6 and 7 I haveshown-suchan arrangement. As illustrated, adjacent bars can have secured to their bearing pintles sector gears 31. These gears intermesh so that movement of one bar will be transmitted to an adjacent bar. In this arrangement the rock bars move toward and away from one another and one of the rock bars of a pair of rock bars can be provided with an .operating crank 38 and this crank has pivotally connected thereto the operating lever 39.

l Fromthe foregoing description, it can be seen that I have provided an exceptionally simple and durable concave for threshing machines in which the toothed bars thereof can be quickly and easily adjusted to bring the teeth thereof into and out of play. I

Changes in details may be made without departing from the spirit or the scope of my invention, but what I claim as new is:

1; In a threshing machine, a concave including a plurality of pivotally supported toothed bars, the teeth of said bars being of a greater length than the distance between the bars, means for rocking said bars, and said bars having grooves for receiving teeth of adjacent bars when the bars are rocked to move the teeth to a lowered position to form a support and stop for said teeth.

2. In a threshing machine, a concave including a plurality of pivotally supported bars, teeth projecting outwardly from said bars, the teeth being of a greater length than the distance betweenthe bars, means for rocking said bars to move the teeth thereof to a raised operative position and to a lowered inoperative position, one edge of the bars being provided with groovesfor receiving the leading edges of the teeth when the bars are rocked and the teeth are in their lowered position to form a support and stop for said teeth.

3. In a threshing machine, a concave including a plurality of pivotally supported rock bars arranged in relatively close proximity to one another, teeth carried by and projecting outwardly from the upper faces of the rock bars, said teeth being of a greater length than the distance between the bars, means for rocking said bars for moving the teeth either to a raised operative position or to a lowered inoperative position, one edge of either of said bars being provided with grooves for receiving the leading edges of teeth of adjacent bars, when the bars are rocked to move the teeth to a lowered position to form a support and stop for said teeth, and grate fingers carried by the mentioned edges of the bars and extending in an opposite direction to the teeth movable to a raised position when the teeth are in their lowered position.

FRED M. MOLL.

REFERENCES CITED The following references are of record in the I file of this patent: 1

UNITED STATES PATENTS Number Name Date 768,200 Speirs et al. 'Aug. 23, 1904 896,097 Flynn Aug. 18, 1908 1,162,548 Barhorst Nov. 30, 1915 1,191,853 Thompson July 18, 1916 1,269,109

Noack June '1 1, 1918