Abstract: The present invention is a housing retrofit assembly for a milling machine or the like, including a quick adjusting stop nut for selective sliding coarse adjustment and rotational precision fine adjustment for rotatable engagement with a threaded rod or shaft in close tolerances, which provides stable precision engagement with the shaft, and which provides a positive locking mechanism. A unique lighting assembly is also disclosed which moves with the machine head for illuminating the milling cutter or the workpiece.

Abstract: The present invention is a quick adjusting stop nut for selective sliding coarse adjustment and rotational precision fine adjustment for rotatable engagement with a threaded rod or shaft in close tolerances, which provides stable precision engagement with the shaft, and which provides a positive locking mechanism.

Abstract: The present invention is a retrofit apparatus for attachment to vertical milling machines. The invention generally comprises a main scale, a digital indicator, a mounting cover having a centrally located aperture for receiving the indicator and allowing vertical movement thereof, a plurality of hat clips and screws to attach the scale and indicator to the mounting cover, a rear mounting plate, a quill stop bar, a quill mount, and a rod. In operation, as the quill device of a milling machine is moved, the indicator slides up and down within the aperture and the indicator effectively and precisely measures the vertical displacement thereof. In an alterative embodiment of the invention, the retrofit apparatus comprises an aperture in the mounting cover wherein the aperture is substantially the same size as the indicator, and in operation only the scale moves while the indicator measures the vertical displacement of the quill.

Abstract: A screen frame is made by joining four (three or more) screen frame segments together at corners to form a generally rectangular or multi-sided screen frame. Corner joint inserts are placed within each corner of the four screen frame segments and the inserts are spot welded to adjoining screen frame segments to provide a sturdy and rigid screen frame. The screen frame segments are metal extrusions having two parallel flanges extending from a generally square shaped hollow body. A metal screen is secured in the screen frame by spot welding the screen between the flanges of the screen frame segment. The resulting screen frame and screen provides a long-lasting, corrosive resistant, and rigid frame and screen for positioning in window or door frames which can withstand damage from intruders, projectiles, and environmental stresses.

Abstract: The present invention is a screen frame and screen positionable in most window frames and door frames. The invented screen frame is comprised of four screen frame segments joined together at corners to form a generally rectangular or multi-sided screen frame. Corner joint inserts are inserted in each corner of the four screen frame segments and the inserts are spot welded to adjoining screen frame segments to provide a sturdy and rigid screen frame. The screen frame segments are preferably stainless steel extrusions having two parallel flanges extending from a generally square shaped hollow body. An alternative construction of the screen frame is a continuous extruded segment that is notched at certain locations for bending and forming into a continuous screen frame having one junction requiring spot welding. A metal, preferably stainless steel screen is secured in the screen frame by spot welding the screen between the screen frame flanges of the screen frame segment.