US1379208A - Stripping and husking machine - Google Patents

Description

IA-IF. PANDO.

STRIPPING AND HUSKING MACHINE.

APPLICATION FILED NOV. 4, 1916.

1,379,208. Patented May 24, 1921'.

5 SHEETS SHEET I.

WITNESSES IN VEA/ T08 A. F. PANDO.

STRIPPING AND HUSKING MACHINE.

APPLICATION FILED NOV. 4, 1916- 1,3'79,208. Patented May 24, 1921.

I 5 SHEETS-SHEET 2.

A. F. PANDO.

STRIPPING AND HUSKING MACHINE.

APPLICATION FILED NOV. 4, I9I6.

1,379,208. Patented May 24,1921.

5 SHEETS-SHEET 3.

TIIE'ZB.

I wirivfssas I INVENTOR am I 001 r0 5. P4/I/00 I. I By fiH/IEYS A. F- PANDO.

STRIPPING AND HUSKING MACHINE,

APPLICATION FILED NOV. 4, 1916..

: Pate nted May 24,1921.

5 SHEETSSHEET VIII! lll bl IIH II III I w QM WWII/E8855 A ITO/M578 A. FLPANDO.

STRIPPING AND HUSKING MACHINE.

APPLICATION FILED NOV. 4,19i6.

Patented May 24, 1921.

5 SHEETS-SHEET 5.

A TTORNEYS WITNESSES UNITED STATES rarest c erics.

ADOLFQ F. PANDO, 0F BUENOS AIRES, ARGENTINA.

STRIPPING AND HUSKING IJIACHINE.

awrence.

Application filed November 4, 1916.

1 '0 all whom it may concern:

lie it known that I, AnoLro FoRTUNA'ro Pacino, a citizen of th Argentine Republic, residing at Bartolom Mitre street, No. 343, Buenos Aires, Argentina, have invented certain new and useful Improvements in Stripping and Husking Machines, of which the following is a specification.

My present invention relates to a machine for stripping and husking the cobs of maize plants, previously harvested either by another machine, or otherwise.

An apparatus constructed in accordance with this invention, is shown by way of example in the accompanying drawings, in which:

Figure 1 is a lateral elevation of the complete machine.

Fig. 2 is a longitudinal section of the machine, showing the internal parts of the same.

Fig. 3 is a cross section, seen from the side of the elevator, showing sectional views of the arrangement of the internal parts.

Fig. 4 is a partial section, showing the resilient side of the feeding hoppers.

Fig. 5 is an upper view of another section of the same.

Fig. 6 shows an upper view of the husking device.

Fig. 7 is a cross section of a detail of the stripper.

Fig. 8 is a sectional view which shows the form and disposition of the helicoid threads of the husking rollers.

The same reference numbers indicate the same or corresponding parts in all the views.

The corn stripping and husking machine substantially consists of the following main aarts:

l A frame for supporting the several mechanical portions of the apparatus.

The stripping device for detaching the cobs from the stalks or plants.

The husking device for detaching the husks or leaves which inclose the cobs.

The elevator for raising the plants to the stripping rollers.

A series of hoppers, adapted for the adequate feeding of, the plants into the stripper.

A system of gear wheels, pinions, pulleys and driving belts and chains for imparting motion to the several working parts of the machine.

Referring first to the stripper, this de Specification of Letters Patent.

Patented May 24, 1921.

Serial No. 1295015 ribs or rifles running parallel to the axis of v the roller, so that the cross section of this latter resembles a ratchet wheel, as may be seen in Fig. 7; by means of this arrangement the corn plants are readily and firmly gripped and the petiole of the cob severed from the stalk, as will hereinafter be fully explained.

The roller 1 is mounted rotatively in two bearings 2, supported by the timbers 8 of the frame of the machine. To one of the journals of said roller, is bolted the fly wheel 4 which simultaneously serves as a pulley, and on the opposite journal are mounted the sprockets 5 and 6 for imparting motion to the elevator and to the husking device.

Parallel with said roller 1, at a small distance therefrom are mounted one or more rollers 7 (in the example of the invention shown, three of such rollers are provided) having on their outer surface ribs or rifles similar to thoseof the roller 1, and to the ends of the rollers 7 are secured the hoops {3 which bear on the surface of the roller 1 in order to limit the distance to which said rollers may approach each other; the hoops 8 serve at the same time to transmit the motion from the roller 1 to the rollers 7 so that rotation of both rollers is performed in opposite direction The rollers 7 are mounted in brackets 9 of a special shape which in turn are sup ported by the axle 10, mounted on the frame of the machine. 7

.The axle 10 of the brackets 9 is mounted parallel to the roller 1 and in such position that the path of movement of the rollers 7 toward the roller 1, within the limits ofits usual movement in use, is at a very acute angle to and nearly parallel to the path of movement of the corn stalks between the stripping rollers 1 and 7 andin the same direction. As a result of this arrangement, slightly thicker portions of the corn stalks will engage a roller 7 on its under side within a certain limited area and will force the roller away from the roller 1 but abruptly thicker portions such as ears of corn will engage a roller 7 beyond such limited area and in such manner as to press the roller forwardly toward the roller 1. The reason for such operation is obvious. When upward pressure is applied to the periphery of the roller 7 at a point between the point of contact of the rollers and a point in line with the centers of the roller shaft and the supporting axle such pressure will tend to move the roller 7 backwardly with respect to the direction of feed away from the fixed roller 1 but pressure applied at a point forward of such line of centers would tend to move the roller 7 in the opposite direction and towardthe fixed roller 1. An ear approachingthe stripping rollers would engage against the forward face of a roller 7 and tend, to force the roller backward toward the fixed roller 1. An effect in operation therefore is obtained by this diagonal movement of the roller 7 that would not be obtained if the rollers 7 moved perpendicularly away from the roller 1. The pressure on the stalks and damage thereto is limited by the hoops 8 and these hoops are preferably of such thickness that the stalks will not be unduly crushed but when an ear engages the rollers 17116210131011 of the rollers against the base of the ear and against thc'stem there of will be sufiicient to detach the ear from the stalk Said rollercarrying brackets sides of which are formed by two boards or plates 14,01 special shape, hinged to a vertical spindle 15, mounted inside of an angu- I lar piece 16, attached to the horizontal sides of the hoppers.

Every pair of said plates 14 is connected by means of aspring 17, for the purpose of keeping them in a suitable position.

Behind the rollers 1 and 7, isprovided a discharge spout 18, opposite to the feeding device, by which the stripped stalks are dis charged from the machine after passing between the stripping rollers.

' VUnder the stalk feedin device and on the same side ofthe apparatus, isanother hopper 19, of special design, which guides the detached cobs toward one end of the bushing device which is mounted in the frame of themachine, at the bottom of the hopper 19. g V V The husking rollers 20, of suitable diameter, are provided on their entire length, "with helicoid threads of special section (see 'Fig. 8).. ,As shown a thread .V-shaped in 7 cross section on each roller enters econsiderably larger groove rectangular in cross section'jand bears against theside thereof.

The, surfaces-of therollers are also provided with fine longitudinal ribs or 'r ifles, running parallel to the axis of the rollers;

other, on two double bearings 21,-supported 111 turn on two girders forming part of the .frame of the machine.

Along the sides of the rollers 20 and fixed to the frame, are two plates 22 of steel or other suitable substance, having one of their edges, situated next to the rollers, somewhat sharpened, for the purpose of detaching from'the huslring rollers any husks or foreign matter which may adhere to them and interfere with their free rotation.

T 1e rollers 20 whichfor a certain length at one end are slightly smaller in diameter than in the remaining part, are coupled together by means of two pinions 23, so that one of the rollers 20 will rotate in a contrary direction to the other, the'latter receiving its motion from the, roller 1, by means of the sprocket '5, chain 241 and sprocket 25, mounted on the journalof one of the rollers 20.

Transversely with regard to said-rollers 20, at a suitabledistance from their ends andat a small distance above the rollers, are mounted two beater bars 26, providedon partof theirlength with a semi-wrapperof rubber, leather or other suitable material, indicated at 2'7, and providedfor a convenient length on their lower side, with transverse ribs or teeth.

Said beater bars are fixed atone end to a crank shaft 28, supported in the bearings 29 through guiderslots 81, provided in a suit-- able part of the framing and wherein they areallowed to freely reciprocate horizonsuit that the ends of the bars are, held in position but not rigidly, inthe guide-slots 31.

The rocking movement of the beater bars 26wh1ch at the lowest point is from right to left, as seen in F 1g. 2, 1s lmparted by'means ,of one ofthe pinions .23, a pulley which forms the hub of the same, belt'33 and'pulley 34, mounted on the'crank shaft 28.

The bottom of the hopper 19 is provided at one side with an aperture 85, through which pass the'cobs fed along by the threads of the sides'of the hopper which extend nearly in contact with the middle of each I of said rollers, so that the cobs-which move and 30, while their opposite ends pass of the rollers 20, to av passage 36, the bottom on the same, will be fed towardthedischarge opening 37, at the end of said passage or casing, where any suitable receptacle may be placed for receiving the husked cobs.

The frame which supports the above described machine is supported on four feet 38.

The corn plant elevator consists of two parallel boards or plates 39, connected together by means of the cross bars 40 and supported at the lower end by the feet 41, while the upper end is suitably connected as at 42 to the frame of the stripping and husking machine.

Between the boards 39 moves an endless canvas belt 43, provided with cross bars having small pegs 44.

The endless canvas belt is mounted on two rollers, one 45, provided with stretchers 46, and mounted at one of the ends'of the boards 39, while the other, 47, is fixed in the frame of the machine, opposite the feeder and parallel to the roller 1. Said roller 47 is provided at the ends with two washers 48, for guiding the canvas conveyer. v The roller 47 transmits to the canvas the movement received from the sprocket 6, by means of the chain 49 and the sprocket 50, mounted on the journal of said roller.

The operation of the above described corn stripping and husking machine, is as follows 7 After starting the machine by the application of any suitable power to the fly wheel 4, the harvested corn plants are placed on the elevating canvas 43, with their stalks toward the feeder of the stripping machine.

The plants are fed along in this position into the hoppers 13, at the bottom of which they are seized by the ribs or teeth of the rollers 1; during their passage between the rollers 1 and 7, the stalks will be compressed by the action of the spring 12 which operates on the arms of the brackets 9.

As an ear arrives before the rollers 1 and 7, the increased diameter of the stem of the ear as compared with the diameter of the stalk, may force the rollers slightly apart, as is permitted by the resilient connection of the arm 11 but as the shoulders of the ear engage the rollers, the same will have a tendency to press the rollers 7 forwardly in its path of movement toward the roller 1, thus increasing the operative pressure of the rollers and submitting the petiole or stem of the ear to a tearing action with the result that the car will be gradually loosened and finally detached by the action of the rollers. The hoops 8 of the rollers 7 prevent the rollore from approaching each other too closely and thereby eventually tearing to pieces the whole stalk while the same is being loosened from the cob.

While the stripped stalks are being discharged through the spent 18, the cobs will fall into the hopper 19, at the bottom of which they are submitted to the action of the husking rollers 20,

The rollers 20 rotate in opposite directions, that is to say, both turn toward the small space left'between them, and while rotating, the helicoid threads of the rollers will cause the cobs to travel through the opening 35, at the bottom of the hopper 19. As soon as the cobs are carried by the rollers, which new approach each other very closely, beneath the beater bars 26, owing to the combined rocking and vertically reciprocal motion of the same, the teeth on the under side of the bars will alternately seize the cobs, press them against the thread of the rollers 20 and then loose them again, so that the cobs are tossed about and turn on their axis, with the result that the husk will be seized and torn off by the threads and rifles of the rollers 20. The husks will between the rollers and fall to the ground, while the clean cobs, no longer seized by the rollers, will travel along them and be discharged through the opening 37.

Any grain which during this operation may become detached from the cobs, will pass between the rollers 20, through the space left between the threads, falling to the ground together with the husks, from which it may be separated in any convenient way. 7

When I speak in my claims of ribs for a roller, I do not mean that they necessarily must be continuous; and when I speak of a fixed roller I mean a roller which is relatively stationary to the machine.

I declare that what I claim and desire to secure by Letters Patent, is

1. In an ear and stalk separating mechanism I01 corn husking machlnes, a fixed rotatable stripping roller, a second stripping roller co-acting therewith, a pivoted arm at the free end of which said second roller is rotatably supported, the pivotal axis of said arm being behind the line joining the centers of the two rollers and so positioned that the movement of the movable roller to and from the fixed roller is in a path nearly parallel to the path of movement of the stalks between the rollers, and means for feeding stalks between the rollers on the side in front of said line, whereby the rollers tend to approach one another when an ear reaches the point of tangency of the rollers.

2. In an ear and stalk separating mechanism for corn husking machines, a fixed rotatable stripping roller, a second stripping roller coacting therewith, a pivoted. arm at the free end of which said second roller is rotatably supported, the pivotal axis of said arm being behind but relatively close to the line joining the centers of the two rollers, so that the path of movement of the roller is nearly parallel to the path of travel of the stalks between the rollers, a spring acting upon the pivoted arm to press the second roller toward the fixed roller, and means for feeding stalks between the rollers on the side in front of said line, whereby the rollers tend to approach'one another when an ear reaches the point of tangency of the rollers.

3. In an ear and stalk stripping mechanism for corn husking machines, a fixed rotatable stripping roller, a second movable rotatable stripping roller co-acting there with mounted, for movement between the fixed roller in a path nearly parallel to the path of travel of the stalks between the rollers in such manner that an ear engaging the rollers will tend to press the movable roller toward the fixed roller.

4:. In an ear and stalk separating mecha nism for corn husking machines, fixed and movable rotatable stripping rollers between which the stalks are fed, means yieldably supporting the movable roller for movement toward the fixed roller in a path at an acute angle to but nearly parallel to the path of movement of the stalks between the rollers r a manner to tend to press the roller "forward along its path of movement toward the fixed roller. 7

5. In a machine for husking corn, a plurality of cooperating husking rollers, substantially straight beater bars lying trans- Versely above the bushing rollers provided with friction faces, slidably mounted and yieldably pressed toward the rollers at one end and a rotatable crank arm on which the other ends of said beater arms are mounted to give reciprocating and rocking movement to the beater arms whereby the beater bars alternately rub over and free any cob which may be broughtbetween a heater arm and the rollers.

In testimony whereof I afix my signature.

ADOLFO F. PANDO.

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