US1095492A - Discharge-chute for concrete-mixers. - Google Patents

Description

C. H. DASHER. DISCHARGE GHUTE FOR CONCRETE MIXERS. V APPLIUATION FILED SEPT. 2, 1913. 1,095,492, Patented May 5, 1914;

2 SHBETS-S HEBT 1.

WITNESSES: INVEN'IOR COLUMBIA FLANOGRAPH 60., WASHINGTON, D. c.

C. H. DASHER.

DISCHARGE GHUTE FOR CONCRETE MIXERS.

APPLICATION FILED SEPT. 2, 1913.

7 1,095,492. Patented May.5,1914.

2 SHEETS-SHEET 2.

,7? (Jar/es Ila 6%.? I 4 Jaw W/W I v Y A'I'rORNEY CHARLES H. DASHER, 0F OAKLAND, CALIFORNIA.

DISGHARGE-CHUTE FOR OONCRETE-MIXEBS.

Specification of Letters Patent.

Patented May 5, 1914:.

Application filed September 2. 1913. Serial No. 787,587.

T 0 all whom it may concern:

Be it known that I, CHARLES H. DASHER, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in. Discharge-Chutes for Concrete-Mixers, of which the following is a specification.

This invention relates to a discharge chute for rotary mixers, and has been particularly designed for use in conjunction with a concrete mixing machine.

Heretofo-re it has been common to use a tiltable discharge chute which will assume a downward outwardly inclined position when the machine is in discharge position and an upward inwardly inclined position when the machine is-mixing.

The object of the present invention is to improve on this discharge chute so as to cause it to occupy a minimum amount of room when in mixing position and not stick out so far as to interfere with the operation of nearby elevators and other machinery; and also to balance the chute so that it can be easily worked.

The nature of the invention and its objects will more particularly appear hereinafter, having reference to the accompanying drawings, in which- Figure 1 is a view of the invention in front elevation. Fig. 2 is a vertical section on the line AA, Fig. 1, showing the folded position of the chute in broken lines.

A is a rotary concrete mixing drum of well known description adapted to receive the material to be mixed at one side and to discharge it at the other, through a central opening 2. The present invention has to do with the discharge end of the apparatus.

Adjacent to the discharge opening 2 are two horizontal shafts 34; the lower shaft 3 extending crosswise of the end of the drum just below or adjacent to the lower end of opening 2 and the upper shaft 4 similarly extending across the top of the opening 2 and both shafts being suitably j ournaled in appropriate uprights 5. Shaft 4: is extended to one side of the drum and carries an operating lever 6 for the purpose later to be described. The lower shaft 3 carries bracket arms 7 to which the lower chute section 8 of the discharge chute is rigidly secured, so

' that the chute section 8 will rock in unison pivoted at one end to the underside of section 8 at a point 11 outside of andbeyond shaft 3, and at the other end at a point 12 to the top of the chute section 9 and beyond and outside of shaft 4.

The several parts are constructed and arranged so that by a simple backward and downward movement of lever 6 the inner section 9 will be rotated outwardly and the outer section 8 will be rotated inwardly assuming the positions shown by the dotted lines in Fig. 2. lVhen in the position shown by the solid lines in Fig. 2, the sections form a continuous trough leading from the inside of the mixing drum to the exterior thereof and any material deposited on section 9 will flow by gravity from the mixing drum to any receiving receptacle placed under section 8. shown by the dotted lines, section 9 is removed from the drum to such an extent that little or no material will fall upon it during the mixing process and section 8 is swung back into such position that the be fore mentioned receiving receptacle can be hoisted or conveyed vertically without striking it, while both sections are so placed that any material adhering to them will drain back into the mixing drum.

By thus making the chute in two sections and hanging them in the manner shown, the sections balance one another so that a single lever for both sections sufiices, and requires very little power or strength to move them. The two sections when moved up into the inoperative position assumed when the drum is mixing, occupy a minimum amount of space which is a quite important feature, and they also, when folded up, provide a perfect re-dra-in back into the drum, of any moisture or wet material that may still be clinging to the chute sections aifter discharge.

Having thus described my invention what I claim and desire to secure by Letters Patent is:

1. A discharge chute for mixing drums consisting of a pair of vertical supports, a pair of shafts mounted one above the other on said supports, chute sections operatively connected together and carried by said shafts, and means on one of said shafts for moving the sections into alinement one with When in the position the other to form a discharge chute projecting a distance substantially equal to the length of one of said sections from each side of the supports, and for moving said sections into a folded position one above the other With the ends of said sections projecting from each side of the supports a distance substantially equal to one-half the length of a single section.

2. A discharge chute for mixing drums comprising a pair of vertical supports, a pair of shafts mounted one above the other in said supports, a chute section rigidly car ried by each of said shafts, a link operatively connecting the forward ends of said sections, and a handle on one of said shafts for moving the sections into and out of alinement.

3. A discharge chute for mixing drums comprising a pair of vertical standards, a pair of shafts mounted one above the other on said standards, chute sections movable into discharge and folded position carried by said shafts, said chute sections when in discharge position projecting substantially the length of one of the sections from each side of the support, and when in folded position projecting only one-half the length of one of said sections from the sides of the supports and having the opposite ends thereof in substantially vertical planes.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

CHARLES H. DASHER. Witnesses H. M. LA'rrIMoRE, J. A. Hasrn.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G.

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