Here is one model, which I am presuming is the earlier one. It is shown here in a photograph of the machine at Skyline Type Foundry. (See Photos / Skyline Type Foundry section.) It appears to be the same style as shown in the Operating Instructions for the Rouse Type Mortiser , but differs from the one in the 1940 T.M-3: Instruction Print for Rouse Type Mortiser and 1959 ATF Printing Equipment Catalog .
In this version, the milling cutter is mounted directly on an arbor extending from the motor, and the cutter rotates in a fixed location. The workholding vise is mounted on a vertical slide at the front center of the machine. The entire vise moves up and down under lever control to make the cut.
In this version, the milling cutter is belt driven, and is held by a spindle on the right-hand side (as the operator faces the machine). This places the cutter much nearer the center of the machine. The workholding vise is mounted in a fixed position in front of the cutter. In this version, the cutter moves up and down under lever control to make the cut, while the workholding vise remains stationary. One visual result of this is that the guard shielding the cutter is now in the shape of an inverted J. The machine also appears now to have a chip bucket underneath.
This is the machine layout shown in the drawing T.M-3: Instruction Print for Rouse Type Mortiser , The machine now seems to share many parts with Rouse's Vertical Miterer, so I've shown the "Master Vertical Miterer" below, in an image from the same page of the same 1959 ATF catalog. (Rouse also made an "Economy Vertical Miterer," which has much the same layout.)
[click image to view larger]
[click image to view larger]
I presume that the fixed-cutter/moving-vise version of the machine is the earlier version because the moving-cutter/fixed-vise version was designed to share parts with the Vertical Miterer (a more popular and more common product). It is logical to assume that Rouse redesigned the Mortiser for greater manufacturing compatibility with the Miterer, while it would have made little sense to redesign it to be less compatible.
The date on drawing T.M-3: Instruction Print for Rouse Type Mortiser (April 26, 1940) gives a date by which this design change must have been made. The patent for the Rouse Vertical Miterer dates from 1932/1934 (No. 1,980,502, to Harry B. Rouse, "Mitering Machine," filed 1932-02-19, issued 1934-11-13), so it is possible that this design change occurred in the early 1930s.
Because I wish to keep all of linking images on this site in the public domain, I (the photograper) dedicate the version of the Rouse Type Mortiser photograph used as a page icon and linking image to the public domain.
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