GB400342A - Discharging and distributing mechanism for concrete mixers - Google Patents

Abstract

400,342. Concrete-mixing machines. POTTER, E., 3, Staple Inn, High Holborn, London.-(Chain Belt Co. ; 1600, West Bruce Street, Milwaukee, Wisconsin, U.S.A.) June 22, 1932, No. 17629. [Class 86.] Means for distributing concrete from a concrete-mixer 12 consists of a delivery shoot 15 which is adapted to receive concrete from a discharge opening in the mixer and is arranged so that it is rotatable into an inoperative position wherein it lies substantially parallel to the longitudinal axis of the mixer, and adjacent thereto as shown in dotted lines in Fig. 3. The shoot 15 is mounted at its receiving end on a universal pivot 17 on an arm 16 which is pivotally connected to the frame so as to have substantially horizontal swinging movement. The free end of the shoot is supported by a rod or cable 25 which is connected at its upper end to a strap 27 having a series of apertures for the reception of a bolt 29 carried by a trolley 30 adapted to run on a track 33 on a delivery hopper 14. This hopper 14 is mounted adjacent the discharge opening 13 in the mixer and above the receiving end of the shoot 15, and comprises side-plates 14a and, if necessary, a curved end member 14b. The track 33 consists of a pipe welded or otherwise secured to the upper edge of the hopper. The socket member 19 of the universal pivot 17 is cut away as at 19a, Fig. 6, to permit the shoot to be tilted laterally when in inoperative position, and a bolt or key 19b is provided to prevent unintentional separation of the parts of the joint. In the inoperative position, the free end of the shoot is supported by an arm 21 rigidly mounted on the frame 11, as shown in Fig. 3. One or more stop members 3.5, Fig. 9, are provided in order to prevent the arm 16 and the receiving end of the shoot from coming into contact with the drum 12 or the frame members 11. The stop member 35 consists of an arm which is pivoted to the frame 11 and held in horizontal position by a spring 38. When the receiving end of the shoot 15 is in proper position beneath the hopper 14, latch members 16a, 35a, which are carried by the arms 16, 35 respectively, engage in order to prevent the receiving end of the shoot being displaced relatively to the hopper 14. The arm 35 is provided with an upstanding rod 35b which is adapted to be engaged by the receiving end of the shoot as it swings downwardly so as to depress the arm 35 against the action of the spring 38 and release the engagement between the latch members 16a, 35a. The arm 16 may then be swung about its pivot.