US2092961A - Discharge gate mechanism for concrete transportation conduits - Google Patents

Description

Sept. 14, 1937. E. A. c. EICKSTAEDT 2,092,961

DISCHARGE GATE MECHANISM FOR CONCRETE TRANSPORTATION CONDUITS Filed May 1, 1956 2 Sheets-Sheet l Zlrvut Mon Edwirpfl. C Eicksiaed t,

Se t. 14, 1937. E. A. c. EICKSTAEDT I 2,092,961

DISCHARGE GATE MECHANISM FOR CONCRETE TRANSPORTATION CONDUITS Filed May 1, 1936 2 Sheets-Sheet 2 awe/whom Edwin CE'zfcksta-edt,

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Patented Sept. 14, 1937 UNITED STATES DISCHARGE GATE MECHANISM' FOR CON CRETE TRANSPORTATION CONDUITS Edwin Alvin Carl Eickstaedt, west Allis, Wis., as-

signor to Chain Belt Company, Milwaukee, Wis., a corporation of Wisconsin Application May 1, 1936, Scrlal-N0.- 77,422

6 Claims.

This invention relates to discharge gate mechanism for concrete transportation conduits, and has for one of its objects to provide mechanism of this character which will be simple in construction, comparatively inexpensive tomanufacture, and highly eflicient in use. The invention relates generally to the type of gate disclosed in the prior U. S. Patent No. 2,021,108, granted November 12, 1935, on an application filed by Charles I. Longenecker; and more 'specifically, to mechanism for retaining the gate in closed position.

With the above and other objects in view which will appear as the description proceeds, the invention consists in the novel details of construction and combinations and arrangements of partscharge gate and associated mechanism construct ed in accordance with thepresent invention, the

gate being shown in closed position;

Figure 2 is a central longitudinal sectional view of the parts shown in Figure 1, the clamping mechanism, however, being shown in unlocked position and the gate. partially open; 1 j. s

Figure 3 is a side elevational view similar to Figure 1, with parts broken away and'omitted for the sake of clearness, and showing the gatein completely open position, and

Figure 4 is a transverse sectional'view taken approximately on the plane indicated by the line 44 of Figure 1, looking in the direction of the arrows.

The gate structure generally is, or may be, of substantially the same. construction as that set forth in the said Longenecker Patent No. 2,021,108, comprising a frame member H) which is rigidly secured to conduit sections II as by 45 welding or in any other suitable manner. The lower portion of the frame member is cut away as at l2 to provide a discharge opening for the concrete mixture, which opening may, if desired, be closed by gate member l3 which is pivotally hung on the conduit H by means of the arms I4 engaging the rod or pipe l5 which is secured to the said conduit. The said gate member I3 is preferably provided with the rubber gasket or other packing member [6 arranged to seal the joint between the gate, the frame l0 and the conduit sections II in substantially the-same manner as set forth in said'Longenecker-patent.

The frame member I0- is provided with the spaced U-shaped ears 20 in which are journalled the bearing portions 2| of shaft 22. The said shaft is provided beyond the bearing portions 2l-with the eccentrically disposed studs or projections 23 and with the squared extensions 24, which latter receive the operating handles 25. A stirrup 7 from Figure 4. The said stirrup ZB-ris preferablyprovided at its bottom with a transverse-brace bar 21 whichis arranged to engage with amember carried by the gate 13 as will appear more fully below. i

Bolts 28' are passed through theupstanding legs of the U-shaped journals 20 of the frame member and serve to retain the shaft 22 in position, as will be readily understood from the drawings. 7

The gate member l3 has secured to it's bottom a transversely extending'substantially T-shaped bar 30, the lower surface of: which; 31', is adapted to engage with-the upper surface, 29, ofithe brace bar 21, as shown 'inzFigures 1 and,.2.w The said member 3|] may be provided with-the extension 32,.also engageable with the'bar 21, and serving as a stop to properly position the stirrup 26- relative tothe gate when the. latteris to be closed and clamped in suchposition.

The member 30 is also provided at one side with a finger or projection 35, the "under surface of which is adapted to ride upon the top surface 29 of the stirrup bar 21 as the stirrup is swung about the. eccentric member 23 to clear the gate and permit the latter to drop.

With the parts in the positions illustrated in Figure 1, the discharge opening I2 is closed by the gate l3 and the plastic concrete mixture will pass through the conduit ll just as though the latter were a solid pipe. However, if it be desired to discharge mixture through the opening l2 the handles 25 are grasped and moved through an arc of 180 to the position shown in Figures 2 and 3. This movement will lower the eccentric portions 23 of the shaft 22 and inasmuch as the stirrup 26 is hung upon these eccentrics the said stirrup will be permitted to drop a distance equal to theeccentricity of the members 23. This in turn will permit the gate I3 to drop to substan- I tially the position shown in Figure 2, after which the operator grasps the stirrup 26 and swings it in a clockwise direction as viewed in Figure 2 to substantially the position indicated in broken lines in the said figure. During this swinging movement the top surface of the stirrup bar 2'! will slide along the under surface of the finger or projection 35 thus supporting the gate during this movement, and not only preventing its irregular lower surface from catching upon the stirrup, but also preventing the gate from dropping unexpectedly and possibly injuring the hands of the operator as he moves the stirrup When the stirrup has been moved to substantially the broken line position shown in Figure 2 the gate [3 will then drop to the position indicated in Figure 3, whereupon plastic mixture moving through the conduit ll may be freely discharged through the opening I2. When the discharge is completed the opening may be again closed byreversing the procedure just described.

With the gate l 3 in open position shown in Figure 3, if it be desired to discharge the concrete into a hopper, trough, or chute, such device, indicated at 36 in Figure 3, may be supported upon a hook 31 which may be secured in an aperture 5 38 provided in the lower portion of the stirrup 26, as will be readily understood.

While one form of the invention has been illustrated and described it is obvious that those skilled in the art may vary the details of con- 30 struction as well as the precise arrangement of parts without departing from the spirit of the invention, and therefore it is not wished to be limited to the above disclosure except as may be required by the claims.

What is claimed is:

1. Mechanism for closing a lateral discharge I opening in a conduit, comprising a gate member mounted on said conduit for movement to and from said opening; a stirrup member pivotally carried by said conduit for engagement with and disengagement from said gate member, saidtstirrup being also arranged for rectilinear clamping movements; and eccentric means for moving said stirrup rectilinearly to cause it to clamp said gate member in closing position.

2. Mechanism for closing a lateral discharge opening in a conduit, comprising a gate member mounted on said conduit for swinging movements to and from saidopening; a shaft journ'aled on said conduit, said shaft having eccentric portions;

a stirrup member journaled on said eccentric portions, whereby it may be swung into and out of engagement with said gate member; and means 55 for moving said shaft and eccentric portions to cause said stirrup to clamp said gate member in closing position.

3. Mechanism for closing a lateral discharge opening in a conduit, comprising a gate member mounted on said conduit for swinging movements to and from said opening; U-shaped members carried by said conduit; a shaft journaled in said U shaped members, said shaft having a pair of eccentric projections; bolts passing through the legs of said U-shaped members for retaining said shaft in position; a stirrup member journaled on said eccentric projections for swinging movements into and out of engagement with said gate member; and means for rocking said shaft and eccentric projections to cause said stirrup to clamp said gate member in closing position, and to release the same.

4. Mechanism for closing a lateral discharge opening in a conduit, comprising a gate member mounted on said conduit for swinging movements to and from said opening; a stirrup member mounted on said conduit for swinging movements relative to said gate member; means carried by said gate member for engaging with and positioning said stirrup relative to the gate when the latter is to be closed; and means for moving said stirrup to cause it to clamp said gate in closing position.

5. Mechanism for closing a lateral discharge opening in a conduit, comprising a gate member mounted on said conduit for swinging movements to and from said opening; a stirrup member mounted on said conduit for swinging movements relative to said gate member; means carried by said gate engageable with said stirrup during the swinging movements of the latter, whereby the stirrup may support the gate and prevent swinging of the latter until the stirrup is clear thereof; and means for moving said stirrup to cause it to clamp the gate in closing position.

6. Mechanism for closing a lateral discharge opening in a conduit, comprising a gate member mounted on said conduit for swinging movements to and from said opening; a stirrup member mounted on said conduit for swinging movements relative'to said gate member; means carried by said gate member for engaging with and positioning said stirrup relative to the gate when the latter is to be closed, said means having a projection engageable with the stirrup during the swinging of the latter, whereby the gate will be supported by the stirrup until the latter is clear; and means for moving said stirrup to cause it to clamp said gate in closing position.

EDWIN ALVIN CARL EICKSTAEDT.

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