Патент USA US2119780код для вставки
June 7, 1938. v H. 0. cuR'ns AGGREGATE HANDLING APPARATUS Filed Aplfil 17, 1937 242O3525 22/9212)": A": / Q - __ 2,119,780 Patented June 7, 1938 . ’ i ‘ p v UNITED STATES PATENT OFFICE 1* 2,119,780 ' AGGREGATE’ HANDLING APPARATUS Henry 0. Curtis, Des Moines, Iowa Application April 17,‘ 1937, Serial No. 137,480 6 Claims. 5 lo 15 20 25 (01. 214-110) One object of my invention is to provide apparatus for handling aggregate such as sand, gravel and the like for conveying such aggregate to an aggregate mixer, such as a concrete mixer, side members l5. The speci?ed‘ curvature of each. end member‘ l4 enables closure of these. doors’ through the aggregate‘ after the container C'is propelled into the pile of aggregate with the door the apparatus being‘comparatively simple and open. . \ _ 5 durable as well as inexpensive from a manufac- For propelling the aggregate container or car turing standpoint. A further object is to provide an‘ aggregate handling apparatus including a wheeled container and doors pivoted to the open ends thereof, which are so movable through the aggregate as to facilitate their closure after the aggregate container has been ?lled. Still a further object is to provide a wheeled aggregate carrier having'a reversible bail pivoted thereto for propelling it by means of Winch and cable mechanism. Another object is to DI‘OVidBdOOI‘S for the aggl'egate Carrier Which are Opened and 0105911 by the reversible bail during its OperationStill another object is to provide an inclined track for the aggregate Carrier S0 associated With a concrete mixer that the carrier can be propelled up the track and to a position for discharging its contents into the concrete mixer. With these and other objects in View, my in- rier C I provide a bail iii, a winch I‘! (see Figure 3) and cables I B. The bail I8 is pivoted to the vention consists in the construction, arrangement and combination of the various parts of my aggregate handling apparatus, whereby the objects 30 contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying ‘drawing, in which: ‘ Figure 1 is a side elevation partly in section 35 showing an aggregate carrier forming a part of my aggregate handling apparatus. Figure 2 is a plan View ofv the carrier. _ Figure 3 is a diagrammatical side elevation of the carrier and the remaining part of the appa40 ratus for conveying aggregate to a concrete mixer; and Figure 4 is a side elevation of a modi?ed form of carrier. On the accompanying drawing I have used the 45 reference character C to indicate a container for aggregate. The container C has a pair of side walls l0 and a bottom II, the ends of the con- tainer being open. Wheels l2 are provided for supporting the container'C so that it can be read50 ily propelled from one position to another. The open ends of the carrier C are closed by doorsD and D’ pivoted to the upper corners of the carrier as at l3. Each of the doors D and D’ comprises an arcuate end member l4 curved on 55 a radius from the pivotal axis l3, and a pair of carrier C as at H! so- it can be reversed as illus trated by solid and dotted lines in Figure 1. 10 When the bail I6 is in the solid line position, the aggregate carrier is‘ propelled in 'a left hand direction into the pile of aggregate. It will be noted that the door D is opened; such opening being automatically e?ected by a jackknife tog- 15 gle arrangement including a pivoted lever 20; a. door lever 22 and link connections 23 and 24. They link connection 23 extends from the bail iii to the lever 20', while the link connection 24' ex tends from the lever 20 to the lever 22. '. 20‘ When the bail I5 is reversed,.the jackknife tog gle arrangement will straighten out to the dotted position for closing the door’ M and thereby. re taining the aggregate in the container 0 when the container is propelled in a right hand direc- 25 tion. A ?exible connection 25 is provided between the lever l6’ and the door D’ for closing-this door whenever the carrier, is propelled in a left hand direction and for permitting it to openiwhenit’mr is propelled in a right hand direction. The door D’ is normally retained closed by. a latch 26 engaging a cross rod. 27 on the door. A leaf spring. 28 serves to normally retain the latch in the latching position. The latch is provided 3,5‘ with an extension 29' adapted, as willhereinafter appear, to be engaged during the operation of. the aggregate carrier for unlatching the door auto matically. In Figure 3 further elements of the apparatus 40 are illustrated. An inclined track 30 is provided which may be mounted on a truckv T. The trackv 30‘ is made of a pair of channel irons spaced lat erally and adaptable for receiving the wheels I2, and thereby. guiding the carrier to. a position 45 Where it can discharge into the. chute. 3| ofv a concrete'mixer 32. The latch extension.2v9.~ is. adapted to engage a Stationary projection 33' f0!‘ thus releasing ‘the door D’ after which a stationary extension 34 en- 50 gages a lever 35 of the door D’ for opening the door so the contents of the container C maybe discharged into the concrete mixer 32. ' The winch and cable mechanism includes idler pulleys 36, a dead man pulley 36" and a boom 31 55 2 2, 1 19,780 carrying an idler pulley 38. The boom 31 is piv tainer for reversal relative thereto for pulling said oted to the truck T and may move between stops 39 during operation. In Figure 4 I illustrate a modi?ed form of con struction in which a container C’ is provided with an open end 40 which is constricted by in clining the forward ends of the sides of the con tainer toward each other. In this way the dis charge end of the container C’ may enter the in 10 take opening 4| of a concrete mixer32' for dis charging the contents thereinto without spilling them. This carrier is illustrated as having a. manually operable door D" provided with a han dle lever 35’ and a latch 42 is illustrated for 15 latching the doorlD" in closed position. Aside from these features, the carrier C’ is sim ilar in construction to the carrier C, but does not have all of its automatic advantages. Practical operation 20 In the operation of my device, referring to Figure 3, the carrier C is being moved in a left hand direction and pulled into a pile of aggre gate 43. The door D is open, as shown by solid lines in Figure 1, so the aggregate can enter the container C, but will be retained against falling out of the forward end thereof by the door D’ latched in closed position by the latch 26. When the container has been ?lled, the winch I1 is reversed for swinging the bail I6 of the car rier from the full line position to the dotted posi tion, which ?rst closes the door D and then pro pels the carrier up the inclined track 30, as shown by dotted lines. Finally as shown by dash lines, =' the carrier travels down the inclined portion 30’ of the track 30, the latch 26 being unlatched ad jacent the end of its downward travel and there after the extension 34 engaging the handle lever 35 and thereby opening the door D’. This per 40 mits the contents of the aggregate carrier to be discharged into the chute 3| from which the ag gregate slides into the mixer 32. . ' Just before reaching the height of its travel on the inclined track 30, the bail l6 will engage the pulley 38 of the boom 31 and swing the boom forwardly to the dash line position, thereby rais ing the forward end of the bail to an out-of-the way position where it does not interfere with the concrete mixer 32. This position is illustrated Figure 4. v50 . in After the contents of the carrier have been dis charged, the winch I'! is again reversed for re versing the bail l6 and propelling the aggregate carrier C back for another load of aggregate. With the construction shown in Figure 4, it is 55 not necessary to release and open a door at the right hand end of the carrier. A modi?cation of the character shown in Fig ure 4, when compared with the construction 60 shown in Figure 1, and many others may be made without departing from the real spirit and pur pose of my invention, and it is my intention to cover by my claims any modi?ed forms of struc ture or use of mechanical equivalents which may 65 be reasonably included within their scope. I claim as my invention: 1. In an aggregate handling apparatus, a wheeled container having open ends, doors for said ends, a bail pivotally connected to said con container in either direction, and an operative connection between said bail and said doors to close one door when the bail extends in one di rection and to close the other door when the bail extends in the other direction. 2. In an aggregate handling apparatus, a wheeled container having open ends, doors for said ends, said doors being pivoted to said con tainer and being formed on radii from the pivot 10 axes, a bail pivotally connected to said container for reversal relative thereto for pulling said con tainer in either direction, and an operative con nection between said bail and said doors to close one door when the bail extends in one direction and to close the other door when the bail extends in the other direction. 3. In an aggregate handling apparatus, a wheeled container having open ends, a door for one of said ends, a bail pivotally connected to the lower part of said container adjacent the cen ter thereof and reversible by swinging fore and aft across thetop thereof for pulling said con tainer in either direction, and an operative con nection between said bail and said door to close the door when the bail extends in one direction from its pivotal connection. 4. In an aggregate handling apparatus, a wheeled container having open ends, a door for one of said ends, a bail pivotally connected to said 30 container and reversible by swinging fore and aft across the top thereto for pulling said container in either direction, and a toggle lever connection between said bail and said door to close the door when the bail extends in one direction from its . pivotal connection and to open the door when the bail extends in the other direction therefrom. 5. In an aggregate handling apparatus, a wheeled container having open ends, a door for one of said ends, a track for said container ter minating adjacent the intake of an aggregate mixer and winch and cable mechanism for alter nately propelling said container into a pile of aggregate and along said track to discharge its contents into said mixer, said container having a bail connected to the lower center portion there— of with its outer end connected with said winch and cable mechanism, such bail connection being swingable across the top of said container and thereby reversible for pulling the container in 50 either direction. 6. In an aggregate handing apparatus, a wheeled container having open ends, a door for one of said ends, a track for said container ter minating adjacent the intake of an aggregate mixer and winch and cable mechanism for alter nately propelling said container into a pile of ag gregate and along said track to discharge its con tents into said mixer, said container having a bail connected with said winch and cable mecha nism, such bail connection being reversible for pulling the container in either direction, and a boom pivoted adjacent said aggregate mixer and adapted to be engaged by said bail and raise it to a position where it does not interfere with the mixer as the container assumes a position there adjacent for discharging its contents. HENRY O. CURTIS.