US828919A - Wind-stacker hood. - Google Patents

Description

No. 823,919. PATENTED AUG. 21, 1906. i A. H. & H. A. BBRNS. 4 WIND STAUKER Hoon.

APPLICATION FILED DBO.20. 1905.

53 www@ I Nw UNITED STATES l PATENT oriucn.

ANDREW H. BERNS AND HERMAN A. BERN S, OF CH'EBANSE, ILLINOIS.

WIND-STACKER HOOD.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed December 2Q, 1905. Serial Nox 292.559.

T0 all whom t may concern:

Be it known that we, ANDREW HERMAN BERNs and HERMAN ANDREW BERNs, citizens of the United States, residing at Chebanse, in the county of Iroquois and State of Illinois, have invented certain new and useful Improvements in Wind -Stacker Hoods, of which the following is a specification.

This invention relates more particularly to the hood or adjustable discharge end for the stackers or straw and chaff discharge pipes for threshing-machines and the like. Heretofore such hoods have been provided for directing the blast or discharge at diHerent angles at the discharge end of the stackers but no adequate provision has been made whereby the straw may be deposited in any desired position without being blown away or across the stack which is being formed. This improved hood provides means whereby the straw may not only be discharged in any direction desired, but may also be deposited just where it is wanted and will not be blown away. Its objects are to form a simple and efficient discharge-hood of the character described, and it consists in the novel features and details of construction, which will be described and claimed hereinafter.

In the accompanying drawings, Figure l is a side elevation of an improved hood ernbodying this invention, parts being broken away to show the forni of construction. Fig. 2 is a front or end view of the same. Fig. 3 is a front or end view of the hood in open or contracted position. Fig. 4 is an enlarged detailed view of one of the sections.

As shown in the drawings, 4 represents the outer end of the wind-stacker pipe, the hood being swiveled thereto in any convenient manner, and any suitable means (not shown) may be provided for turning the hood on the pipe. The hood proper comprises a rigid portion 5, which is adapted to revolve or swivel in the end of the stacker-pipe, and a plurality of pivoted folding or telescoping sections which increase in cross-sectional area toward'the discharge end of the hood. The first of these sections 6 6 are what might be termed single sections and are formed to gradually change the cross-section from circular form to rectangular form. The last or outer sections 7 7 may be termed double sections and are formed from wide sheets, the pivoted sides being slit and overlapped, as shown in Fig. 4. These last sections are preferably rectangular, and the outer walls may even be curved in slightly, as shown in Fig. 3, for a purpose to be explained hereinafter. The sections of the hood are open at the normally lower side and are pivoted together at 8 8. rI`hey are held in engagement with eachother and a reasonably-tight closure formed between them by means of the beads or wires or flanges 9 9, formed along the engaging edges, as shown in Fig. 1. The hood is held inthe normally lowered or closed position (shown in Fig. l) by means of the side springs 10, which are fastened to the rigid portion at one end and to the last section at the other end in any desirable manner to give the proper tension.

The velocity and pressure of the blast of air through the discharge-pipe will be greatly diminished if the area of the pipe or outlet is increased, and as the blast is thus diminished the straw will be gently deposited or dropped at the end of the stacker instead of being blown away. This invention provides means for thus'increasing the discharge area with the ho'od in any desired position and yet allows the hood to be drawn up to such an open position that the straw can be blown away to a considerable distance when desired. In order to provide for a full discharge area, the first sections of the hood are closed first and the outer sections closed last when the hood is being raised to a partially-open position. This may be accomplished in any desired manner g but the arrangement shown has been found to operate very successfully. This consists of an operating cord or wire 11, which passes through guide clips or lugs 12 on each of the sections and. is fastened to the last section. This cord or wire is continued down along the stackerpipe to a convenient point for operating and is there fastened in any desired manner when the hood has been adjusted. The outer sections are prevented frorn closing first by means of a coiled spring 13, through which the wire Il passes and which bears against the lugs` on these sections. This spring can ofcourse be made in sections corresponding to the sections of the hood and performs the further function of causing the outer sections to close together simultaneously instead of one after another. It will thus be seen that the full discharge area is maintained until the hood is entirely raised to open position, when the blast passes directly through without being deflected or modified thereby.

The operation of this improved hood will ITO be readily understood from the above description and the drawings. The blast of air from the threshingmachine passes up through the stacker-pipe and carries therewith the straw and chaff. As the blast enters the discharge-hood it is deilected by striking the walls of the hood-sections and its force is dissipated as it spreads out over the enlarged area, so that the straw will be dropped adjacent to the hood instead of being blown away. The Hat surfaces of the rectangular sections are especially efective in spreading the blast, so that its force will be dissipated. It will be noted that when the hood is closed or down the blast from the circular pipe striking against the llat or inwardly-curvedfaces of the hood-sections is deflected into the corners of the hood, causing eddies, which weaken the force of the blast and allow the straw to be gently dropped out of the hood instead of being blown out violently. On account of the novel hood-raising device this operation will be the same with the hood in any position other than the full-open position. This hood has been found to operate much more successully than any of those heretofore in use, larger stacks being built with it with a consequent saving of time and less straw wasted.`

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

1. The combination with a wind-stacker pipe, of an adjustable hood of increasing discharge area and which will furnish the greatest discharge area in all positions except the -full-open position.-

2. The combination in a stacker-hood, of a cylindrical rigid section, a plurality of telescoping sections pivoted to said rigid section and to each other, said sections gradually changing in cross-section from circular to rectangular outline the outer sections presenting substantially flat planes for the blast to strike against when the hood is in lowered or closed position.

said hood, and means for telescoping said sections to open or partially open said hood whereby the inner or smallest sections will be closed before the outer or larger sections and then said outer sections will be closed or telescoped simultaneously.

'5. The combination in a stacker-hood of a rigid section adapted to be swiveled to the stackeripe, a plurality of pivoted telescoping hoo -sections of gradually-enlarged area, clips or keepers on said sections, a closingwire or the like passing through said clips and secured to the last section and a spring for holding the last sections in extended position while the iirst sections are being closed.

6. In a stacker-hood, the combination of pivoted telescoping sections, means for telescoping and means for extending said sections, and means whereby the outer sections will be held in extended position until the inner sections are telescoped and will then be l telescoped simultaneously.

`7. The combinationof the telescoping sections of the beads comprising wires with the edges of said sections being turned to inclose the same and adapted to form a tight closure between said sections and prevent them from becoming disengaged.

ANDREW H. BERNS. HERMAN A. BERNS.

Witnesses EDMOND ALLEN, J As. CAHILL.

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