Abstract: A mixer assembly including a driven hollow quill having first and second conical portions in an axial bore and being adapted to receive and mate with a mixer shaft assembly including a mixer shaft having a conical chamfer to mate with the first conical portion and a quill shaft disposed on and removable from the end of the mixer shaft. The quill shaft has a threaded aperture which cooperates with a jack screw rotatably mounted within the quill bore to draw the conical chamfer into preloaded centered relationship with the first conical portion of the quill bore. A tapered sleeve lodged between the mixer shaft and the second conical portion of the quill bore distributes radial loads on the shaft over a large area of the quill, thereby preventing damage to the shaft and quill. A seal assembly on the mixer shaft isolates the housing from the interior of the vessel. The seal is readily removed for replacement. First, the tapered sleeve is released from the second conical portion.

Abstract: An electronic digital display scale with a label printer adapted to weigh an article, to print a measured weight of said article on a label and to adhere said label onto said article weighed, wherein the printed label is held by a label transfer device by means of adhering or suction and transferred to an applying position outside a frame, thereby said label is applied to the weighted article by depressing said weighed article against the label retained by said label transfer device.