These engravings illustrate the style of hand wheel and screw with cap and washer that we make and furnish with our combined husk mills, and when ordered we send them with the irons needed with mill stones. The figure on the right shows the hand wheel, screw cap and washer in position when ready for operation. The wrought iron screw is cut in a lathe and is what is termed a square thread. The wheel cap and washer are all turned and polished, making a good looking, durable fixture, as well as an accurate means of adjusting the stone. We sometimes make these of brass.
This shows our pattern for arched bridge pot and lighter lever for geared mills or when an elevated step is wanted. The part holding the steel on which spindle rests, is contained in a central lifting chamber, which is turned to fit the body of the arch, like a piston, thus allowing a perfect perpendicular movement without any liability to vary from its true position; the heavy set-screw at the rear end of the lever is to admit of more adjustment; the lever can be moved around at most any required angle without interfering with any part of the step. We provide means (not shown in this cut) to tram the spindle by screws placed in the central lift part of the step, when desired.
Of these we have various styles, some sufficiently heavy for a six foot mill stone, and to tram by screws. The centre lift part is constructed in same style as the arch-step described above. We have patterns of all lengths of lighter levers, as shown under head of Lighter Levers, which fit over this style of step in same manner as shown, excepting we provide an independent rest for the rear end of the lever and screw for regulating it. This makes a very desirable rig for the lower end of mill spindles in any mill, and are fast taking the place of all others. It obviates the cutting of the bridge-tree or timber on which it rests.
The steel on which the spindle-toe rests and presses sidewise in running is constructed in various ways. In some situations we provide a flat plate, below for taking the downward pressure, and above it a heavy steel ring supported a little above to allow a chamber for the flow of oil around the very extreme lower end of the steel spindle toe. This chamber is free to be supplied with oil from the upper receptacle through holes provided for the purpose. A bearing made with a hardened steel plate below and a ring of good anti-friction metal around the spindle-toe is the most desirable when properly constructed and of suitable metals.
