US1619626A

US1619626A - Discharge mechanism for mixers

Info

Publication number: US1619626A
Application number: US634093A
Authority: US
Inventors: Joseph H Mosel
Original assignee: LAKEWOOD ENGINEERING Co
Current assignee: LAKEWOOD ENGINEERING Co
Priority date: 1923-04-23
Filing date: 1923-04-23
Publication date: 1927-03-01
Anticipated expiration: 1944-03-01

Description

1,619,626 March 1 1927' I J. H. MOSEL DISCHARGE MECHANISM FOR MIXEBS Filed April 23. 1923 2 Sheets-Sheet 'K 5:06am.

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1, 19,26 March 1 19217 J. H. MOSEL 6 6 DISCHARGE MECHANISM FOR MIXERS Filed April 23, 1923 2 Sheets-Sheet 2 Patented Mar. 1, 1927.

UNITED STATES PATENT OFFICE.

JOSEPH I-I. MOSEL, OF LAKEWOOD, OHIO, ASSIGNOR TO THE LAKEW'OOD' ENGINEERING COMPANY, OF LAKEWOOD, 0I-IIO,-A CORPORATION OF OHIO.

DISCHARGE MECHANISM FOR MIXERS.

Application filed April 23, 1923. Serial No. 634,093.

This invention relates particularly to'an.

apparatus or mechanism for discharging the contents of av mixing drum after the contents have been given the desired mixing action. More particularly, the device is intended for use with a revolving drum of a concrete mixer, and provides the means by which the mixed batch may be discharged from the drum while the drum is still rotating. i

The object of the invention is to provide a discharge mechanism for the purpose which will efficiently discharge the batch when it is desired so to do, and which is so constructed that it will discharge'the batch from the mixer in a minimum interval of time.

Reference should be had to the accompanying drawings forming a part of this specification, in which Fig. l is a front elevation with portions in section of a portion of a mixing machine including a revolving drum, the discharge mechanism and a portion of a frame work; F ig. 2 is an elevation with portions in section of a part of the discharge mechanism; Fig. 3 is an end elevation of a portion of a mixing machine including a drum part of the frame work and the discharge mechanism; Fig. 4 is an elevation of a portion of the discharge mechanism.

Referring to the drawings 1 is a mixing drum which in the present instance is shown as cylindrical, and the particular drum shown is adapted to be supported so that it may turn on tracks 2 and 3, and is driven by means of a central gear ring 4. At one side of the machine there is an opening 5 by which material to be mixed is charged into the drum. Upon the opposite side there is an opening 6 through which a mixed batch of material is discharged, and is known as the discharge opening. I p

The ,mixing drum which has been de scribed is of a type which is very well known in the trade, and it is not intended to limit the invention to this particular type of mixing drum.

In operating concrete mixers, particularly the element of time in charging in'a batch to be mixed, mixing the same, and discharging it, is an important element, and ma chines of this character are invariably operated by running the drum continuously, and therefore a successful discharging mechanism must be capable of discharging a. batch from the drum without stopping the drum. The opening through which material to be mixed is charged and the opening through which a mixed batch is discharged are necessarily limited in size because if made too large the contents of the drum will be likely to be thrown out one of these openings during the mixing operation. Therefore, discharge mechanisms with which I am familiar have heretofore been limited in their capacity for receiving and discharging a batch of material'by the size of the discharge opening because the discharging mechanism is invariably on the outside of the drum, and is inserted through the dis-- charge opening at the time when it is 'dethe mixing drum rotates. The second part of the mechanism may be described as a chute which normally is retained without the mixing operation, and when it is desired to discharge the contents of the mixing drum the chute portion is inserted through the discharge opening of the mix ing drum and into position to cooperate with the stationary part of the discharge mechanism which is mounted within the drum.

The action, during the discharging operation, may be described as that the stationary part being flaring receives a large quantityofa mixed batch, as the drum rotates, much larger than the chute itself could receive if it alone were inserted through the discharge opening, in the drum, and of the batch which is thus received by the stationary part of the mechanism, the same is directed onto the chute and out ofthe mixing drum.

Referring to the drawings, the stationary part of the discharge mechanism is indicated at 7, and is more clearly shown in Fig. 11. It consists of a member which is rounding and has a back portion 7 and

side portions

7 and 7. the bottom and open at the side which is toward the discharge opening 6 of the mixer. This member 7 is mounted on brackets 8 and 9 whichare respectively carriedby uprights 10.and 11 which form part of the mixing machine frame and which extend adjacent the discharge opening 6 of the drum. These brackets extend through the opening 6 of the mixing drum and are secured

tothe side portions

7 and 7 of the member 7. These .opening 6 above the member 7, which might be the case if the shield 12 were not present. The movable part of the discharge mechanism 18 more particularly shown in 1 1g. 2,

and comprises a trough-like member 13 and 11.

which at its upper end is cut in a slanting manner, as indicated at 141, the angle being such that when the trough 13 is inserted through the discharge opening 6, the end of the trough will lie substantially parallel with the lower edge of the member 7, and will lie up close to it so that material will not be discharged between the members 7 and 13. The trough 13 is mounted upon two arms 15 and 16. These arms are both pivoted upon a shaft 17 which is mounted so as to extend transversely of the uprights 10 The shaft may be provided with any means for turning it, such for instance as a hand lever 18. The arms 15 and 16 are mounted upon the shaft 17 upon the outside of a flange of 'theupright members 10 and 11, and at approximately the portion of the arms where they are secured to the chute members 13, these arms are bent inwardly. as indicated at 15 and 16 so as to pass across the flanges of the upright members 10 and 11. Therefore, when the trough 13 is moved inwardly through the discharge opensecond chute member 19, and this chute member 19 may be supported in any desired manner. The chute member 19 has one or more stops, such as indicated at 20, agalnst which one or both of the arms, in the present It is open on the top and open at" instance, the arm 15, will abut and so limit the outward movement of the chute member 13.

Upon what may be termedthe inner side of the chute member thereis secured a plate 21. This plat-e at one of its ends is secured at or adjacent the inner end of the chute 13, while the lower end of the plate is fastened to one or more brace rods, suchas indicated. at 22, which in turn are fastened to the chute 13. When the chute 13 is in its outward position, that is to say, when it is withdrawn so as to be in its non-discharging position, the plate 21 will be moved into a position in which it will close the lower portion of the discharge opening 6 of the mixing drum, At this time the two plates 12 and 21 cooperate so as to effectively prevent material which is being mixed in the drum from being thrown out of the discharge opening. The stationary portion 7 which is within the mixing drum is so arranged that its surfaces converge at their lower ends. The structure might be described as having flar ing walls so that the upper edges of the walls enclose a greater area than the lower edge of the walls, Therefore, the upper portion of the member 7 presents a large effective capacity for receiving portions of the batch which, as the drum rotates will be carried up and dropped from the mixing blades in the drum when theportions so carried are at the highest point of the drum.

When the chute 13 is in its outward, nondischarging position, concrete which may enter the member 7 will. of course .merely pass through it, but due to the slanting walls of the member 7 it will assist materially in the mixing action because the material falling vertically upon these slanting walls willv be discharged at an angle and therefore the mixing operation will be assisted.

It will be perfectly evident that the mixer 7 will receive a much greater amount oil? ma, terial during the discharging operation than. could be received it the chute 13 were alone used, and this is because the member 7 being stationarily mounted within the mixing drum 1, may be made of a larger size than could. be removedthrough the discharging opening 6. The material which is cori'alled or gathered by the member 7 may, however, readily be discharged through the chute 13 and so to the outside of the mixer where it may be received by an auxiliary chute 19, or disposed of in any desired manner.

Having described my invention, I claim 1. The combination with a revoluble drum having a discharge opening, a "mechanism for discharging the contents of said drum comprising two trough shaped chute parts, one part located inside of the drum and stationarily mounted with respect to the drum, and a second part which is movable bodily from outside of the drum through said dis:

charge opening and into co-operating relation with the first mentioned part.

2. The combination with a revoluble drum having a discharge opening, a mechanism for discharging the contents of said drum comprising two parts, one part being a flarin g hollow member which is positioned inside of the drum, and stationarily mounted with respect to the drum, and a second part which is a chute and movable bodily from the out side of the drum through said discharge opening into a position underlying the first mentioned part.

3. The combination with a revoluble drum having a discharge opening, a mechanism for discharging the contents of said drum comprising two parts, one part located inside of the drum and stationarily mounted with respect to the drum, and a second part which is movable bodily from outside of the drum through said discharge opening and into co-operating relation with the first mentioned part, a closure plate member carried by the said movable chute which plate stands in front of a portion of the discharge opening when the chute is withdrawn from the drum.

l. The combination with a revoluble drum having a discharge opening, supporting means outside of the drum, a stationary hollow member which is located inside of the drum and supported from said supporting means, and a movable chute member which is mounted upon said supporting means and movable bodily from without the drum through said discharge opening and into a' position in which its upper edge is contiguous to the lower edge of said hollow member to effect a discharge of material from the drum.

5. The combination with a revoluble drum having a discharge opening, a stationary hollow member positioned inside of the drum but stationarily mounted with respect to the drum, a chute member which is pivotally supported outside of the drum for movement bodily about an axis spaced from the chute and means for moving said chute member whereby the chute member may extend through the discharge opening of the drum and into co-operativerelation with the said stationary hollow member within the drum.

6. The combination with a revoluble drum having a discharge opening, a supporting means outside of the drum, a stationary hollow member having outwardly flaring walls which member is located inside of the drum and supported from said supporting means, a movable chute member which is supported outside of the said drum said chute being movable bodily through said discharge opening and into a position immediately beneath the said hollow member to thereby effect a discharge of material "from the drum.

7. The combination with a revoluble drum having a discharge opening, supporting means outside of said drum, a stationary hollow member having flaring sides which is located inside of the drum and supported from said supporting means the width of said hollow member being greater than the diameter of the said discharge opening, and a movable chute member which is supported outside of said drum and movable bodily from without the drum through said discharge opening and into co-operating relation with the said stationary member to effect a. discharge of material from the drum.

In testimony whereof, I hereunto affix my signature.

JOSEPH H. MOSEL.