US617116A

US617116A - Straw-rack for threshing-machines

Info

Publication number: US617116A
Authority: US
Publication date: 1899-01-03
Anticipated expiration: 1916-01-03

Description

Patented Jan. 3, |899.

F. B. MGDANIELS.

STRAW RACK FOB THRESHING MACHINES.

(Application Bled Jaxx. 25, 1897.)

3 Sheets-Sheet I.

(N0 Model.)

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Patented Jan. 3, |899.

No. alms.

` F. B MGDANIELS.- STRAW RACK FRTHRESHING MACHINES.

(Aplilication filed Jan. 25, 1897.)

3 sheets-sheet 2.

(No Model.)

No. 612,116. Patented 1an. 3, 1899. F. B. McDANlELS.

STRAW RACK FOR THBESHING MACHINES.

(Application filed Jan. 25, 189 7.) (No Model.)

3 Sheets-Sheet 3.

Norms Pneus no.A PHOTO-Limo.. wAsmNoToN o c grain is received from the cylinder as the head This rack consists, essentially, of two series of rack-bars alternately arranged and provided with means for reciprocating said bars, the arrangement bein g such that the bars of one series have an opposite reciprocation from the bars of the other series-that is to say, one series of bars move forward as the others move back, and vice versa. Each rack-bar 11 is provided upon its upper surface with a series of notches, each notch having at its rear end an abrupt shoulder 12, and the alternate notches are preferably formed with a rounding or curved upper surface, as shown in Figs. 2, 4, and 5, or with laterally sloping or inclined surfaces, as shown in Figs. 6, 8, and 9. Each series of bars 11 is supported upon suitable cross-bars, preferably by being rigidly secured thereto. As here shown, one series of rack-bars 11 is supported upon the cross-bars 13 13 13, while the other series are supported upon the cross-bars 14 14 14. It will be understood, however, that any suitable number of cross-bars may be employed for each series of rack-bars. The said cross-bars 13 are pivotally supported, as shown in Figs. 15 and 16, to the upper ends of the hangers 6 of one of the grain-pans 5 and to a short hanger 6', pivotally supported upon the frame of the machine. The other series of cross-bars 14 are pivotally supported, as shown in Fig. 16, upon the upper ends of the hangers 6 of the other grain-pan and upon a short hanger 6, also pivotally supported upon the wall or frame of the machine. It will be seen that as the grain-pans are reciprocated the rack-bars 11 will be given an opposite reciprocating movement, and that thereby the straw falling upon said rack-bars will be rapidly moved along over the surface of the rack, and that as one series of bars move forward while the other moves backward the straw will be picked up by one set of bars at the points where it is left by the other set of rack-bars. As the bars move forward the abrupt shoulders 12 thereon engage the straw and cause it to move forward or toward the tail end of the machine with the bars, and as said rack-bars move backward the straw does not move with them, but is left at the points to which it is carried in the forward movement of the bars, at which points it is picked up by the other series of bars and given a further forward movement.

As shown in the detail views, Figs. 2 to 8, and also in Figs. 15 and 16, I prefer to make each rack-bar with a series of notches having fiat upper surfaces alternating with notches having laterally inclined or rounded upper surfaces. The purpose of this construction is to enable me to secure two notches in a given depth of the bar, each having a gradual or slight incline to its upper surface, so as to cause but slight friction or resistance between this inclined surface and the straw when the rack is receding or moving backward and leaving the straw. Moreover, any grain lodged upon the flat surface of one notch will as it passes over onto the next succeeding notch slide off laterally and drop upon the grain-pans below.

I prefer to provide the rack with a series of lifting fingers or blades, preferably arranged also in two series and between the bars of the rack. |These blades may be formed of sheet metal, wire, or other suitable material. As shown in Figs. 1, 10, 11, 15, and 16, said blades are formed of sheet metal andare provided upon their upper surfaces with a series of notches substantially in the shape of sawteeth. As shown in Figs. 1, 15, and 16, these blades 15 are secured to suitable cross-bars 16, and said cross-bars are rigidly secured to the hangers that support the rack. Any other suitable means of supporting said blades or lifting-fingers may, however, be used. Vith the arrangement shown in Figs. 1, 15, and 16 as one series of rack-bars retreat or move backward the corresponding series of lifting fingers or blades move in the same direction and at the same time are depressed or tipped downward, so that when said bars reach the limit of their backward movement the upper surfaces of said blades or lifting-fingers are substantially on a level with the upper surfaces of said rack-bars. As the rack-bars are moved in the opposite direction the lifting lingers or blades are elevated and projected above the u pper surfaces of the rack-bars. This movement of the blades is clearly illustrated by the full and dotted lines indicating the different positions of said blades in Fig. 1 of the drawings. rlhese lifting fingers or blades aid in the movement of the straw over the surface of the rack and at the saine time as said fingers or blades are quickly projected upward between the bars they lift and shake up the straw, thereby aiding in shaking out the grain from the straw. They also tend to throw forward the straw, and as said blades are alternately arranged those of one series move in opposite directions from those of the next series. The straw or considerable portions of it will be tossed from one series of blades to the next series,and so on throughout the machine. Vhile I prefer to move the blades alternately in opposite directions and to support said blades upon the hangers by which the racks are operated, it will be understood that I do not confine myself to such means for supporting or operating said blades or lifting-fingers. While in the construction shown in Figs. 1, 15, and 16 said blades or lifting-fingers have both a reciprocating and an oscillating movement, being tipped or tilted by the hangers upon which they are supported and being carried bodily forward and backward by the movement of said hangers, such movement is not essential to the operation of the device, and in Figs. 10 and 1l of the drawings I have shown the blades or lifting-fingers 15 mounted upon IOO IIO

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shafts 18, by which said blades orlifting-fingers may be given an oscillating movement only. The blades when thus arranged may be located substantially as shown in Figs. 1.,

15, and 16 in relation to the reciprocating rack-bars l1, or the rack-bars may in this instance and also with the construction and arrangement of blades or lifting-lingers shown in Figs. l, 15, and 1G be omitted.

In Figs. 10 and 11 I have shown the blades arranged to alone form the straw-rack, the reciprocating bars being entirely omitted. Vhen the bars are not employed, it will be understood that a greater number of blades will be used. As shown in Figs. 10 and 11, the blades are arranged so as to overlap each other in series, and the shafts 18 being rocked by any suitable means the blades 15 will be tilted or oscillated, and thereby the straw will be moved over the rack and the grain will be shaken therefrom and will drop down between the blades onto the grain-pans below.

In Figs. 12, 13, and 14 I have shown the blades or lifting-fingers formed of wire, with their upper surfaces straight, as shown in Fig. l2, or made of saw-tooth form, as shown in Fig. 14. In Figs. 12, 13, and 14 I have also shown the shafts 18 mounted in suitable bearings upon reciprocating bars 20, there being preferably one of said bars at each side of the machine. These bars are suitably supported, as by means of the pivoted hangers 2l, and they are connected to the reciprocating grain-pans or to the pitmen 7 or to other suitable means by which they may be given a reciprocating movement. To the end of each shaft 18 is connected a crank-arm 22, provided with an opening or slot and connected by a pin or othersuitable means to the frame or casing of the machine. The crankarms of one series of said shafts 18 extend downward and those of the other series eX- tend upward. By this means as the bars 2O are reciprocated the blades or lifting-fingers 15 will be oscillated, the alternate series of blades moving in opposite directions, and by this means the blades or lifting-fingers will operate to rapidly move the straw over the rack and at the same time to shake the grain therefrom.

In Fig. 17 I have shown the pitman 7 made in two sections overlapping each other, each section being provided with a series of holes 25, with bolts 26 for bolting said sections together. By this means the pitman can be lengthened or shortened, and thereby the movement of the parts operated therefrom may be regulated or adjusted. In this Way I can regulate the movement of the rack-bars and blades as occasion may require.

y In Figs. 18 and 19 I have shown the liftingfinger 15 formed by overlapping the ends of the wire of which it is constructed in a suitable clamp 28, that is secured to the shaft 18 by means of a set-screw 29, the two parts of the clamp being drawn together for the purpose of clamping the wire by means of a bolt 30.

claim as new and desire to secure by Letters- 1. The combination, With the two series of oppositely-reciprocating rack-bars and means for moving said bars, of the tilting and reciprocating blades or fingers, the end of each blade or finger thatis toward the head of the rack being arranged to rise higher than the opposite end as the racksbar is moved, and means for positively tilting and reciprocating said blades or fingers, for the purpose set forth.

2. The combination, in a straw-rack for threshingmachines, with the two series of .rack-bars alternately arranged, and means for moving said bars in opposite directions, of the two series of tilting and reciprocating blades or lifting-fingers the end of each blade or finger that is toward the head of the rack being arranged to rise higher than the opposite end as said blade or finger is tilted, and means for positively tilting and reciprocating said blades or fingers, for the purpose set forth.

3. The combination, in a straw-rack for threshing-machines, of a series of 'pivotallysupported blades or lifting-fingers, the end of each blade or lifting-fin ger that is toward the head of the rack being arranged to rise higher than its opposite end, and means for positively tilting and reciprocating said blades or fingers, for the purpose set forth.

Lt. The combination, in a straw-rack for threshing-machines, of a series of reciprocat- 'ng pivotally-supported blades or lifting-hngers, the end of each blade or finger that is toward the head of the rack being arranged to rise higher than its opposite end, means for reciprocating said blades or fingers, and means for positively tilting said blades or fingers, for the purpose set forth.

5. The combination, in a straw-rack for threshingmachines, of a series of alternately` arranged and overlapping blades or fingers, pivoted arms or hangers upon which said blades are supported in a fixed position, said blades projecting from said hangers toward the head of said straw-rack, means for reciprocating said blades or fingers, and means for positively tilting said blades or fingers, for the purpose set forth.

6. The combination, in a straw-rack for threshing-machines, of aseries of alternatelyarranged and overlapping blades or fingers,

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pivoted arms or hangers upon which said blades are supported in a fixed position with the main portions of said blades projecting from said hangers or arms toward the head of the straw-rack, and means for oscillating said hangers, whereby said blades or fingers are given a positive reciprocating and tilting movement and the ends of said blades that are toward the head of the straw-rack being arranged to rise higher than the opposite ends. y

7. The combination, in a straw-rack for threshing-machines, of a series of." blades or lifting-fingers, pivoted arms or hangers upon which said blades or fingers are supported, said blades or fingers projecting from said hangers toward the head of the straw-rack, and means for oscillating said hangers,where by said blades or fingers are given a reciprocating and positive tilting movement and the ends of said blades that are toward the head of the straw-rack are caused to rise higher than the opposite ends.

8. The combination, in a straw-rack for threshing-machines, with reciprocating rackbars, of a series of blades or fingers, pivoted arms or hangers upon which said blades or fingers are supported, said blades projecting from said arms or hangers toward the head of the straw-rack, and means for oscillating said hangers, whereby said blades or ngers are given a reciprocating and positive tilting movement.

9. The combination, in a straw-rack for threshing-m achines, with reciprocating racks,

of a series of blades or lifting-fingers, pivoted arms or hangers upon which said blades or fingers are supported in a fixed position and projecting from said arms or hangers toward the head of the straw-rack, and means for moving said hangers, whereby said blades or fingers are given a reciprocating and tilting movement and the ends of said blades or fingers that are nearest the head of the strawrack are caused to rise higher than the opposite ends, for the purpose set forth.

l0. The combination, in a straw-rack for threshing-machines, with the two series of rack-bars 1l alternately arranged, cross-bars supporting said rack-bars, hangers supporting said cross-bars, lifting blades or fingers 15 supported in a fixed position upon said hangers, and means for oscillating said hangers, for the purpose set forth.

ll. The combination, in a straw-rack for threshing-machines, with the two series of rack-bars 1l alternately arranged, cross-bars supporting said rack-bars, hangers supporting said cross-bars,the lifting blades or fingers arranged between said rack-bars and carried by said hangers,the grain-pans also supported upon said hangers and means for operatively reciprocating said grain-pans, for the purpose set forth.

In testimony whereof I have hereunto set my hand this 12th day of January, A. D. 1897.

FRANCIS B. MCDANIELS.

In presence of- A. C. PAUL, M. E. GooLEY.