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US 4,052,012 AGranted
Portable flour mill
AssigneeMill & Mix Company, Inc.
InventorDonovan R. Feist
Life of this patent
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AssigneeMill & Mix Company, Inc.
InventorDonovan R. Feist
Estimating the term…
A home flour mill for family use having a stationary stone supported by one wall of an outer housing, an electric motor driving a revolving stone cooperable with the stationary stone to accomplish the grinding, a threaded rod and double lock nut means for moving the electric motor and its associated stone toward and away from the fixed stone. Feeding and discharging hopper means and passageway means for leading grain to and from the area between the stones, and bag retaining means in the outer housing to hold a bag to receive the ground flour. A removable cover and internal support means for the motor, hopper, and associated structure; and further rod means for retaining the stationary stone in position and parallel to the rotating stone.
A grain mill having one rotatable stone and one non-rotatable stone in facing relationship to each other, a grain feeding means associated with the non-rotatable stone to feed grain between the stones, collecting means for receiving ground material discharged from the peripheries of the stones, means for driving the rotatable stone, means for adjusting the spacing between said stones, said means for driving said rotatable stone and the means associated with said non-rotatable stone being surrounded by an outer housing including a top wall, vertical side walls, an exterior vertical end wall, a partial bottom wall under a motor for actuating the means for driving said rotatable stone, an interior wall parallel to said end wall and between said motor and said end wall, said means for adjusting the spacing between said stones including a sleeve portion on the periphery of said motor, a threaded rod passing through said interior wall and said sleeve and having a turning knob attached at one end thereof, whereby manual rotation of said threaded rod, via said knob, moves said motor and associated stone toward or away from said non-rotatable stone for adjusting the spacing between said stones.
A grain mill having one rotatable stone and one non-rotatable stone in facing relationship to each other, a grain feeding means associated with the non-rotatable stone to feed grain between the stones, collecting means for receiving ground material discharged from the peripheries of the stones, means for driving the rotatable stone, a motor for actuating said means for driving said rotatable stone, means for adjusting the spacing between said stones, said means for driving said rotatable stone being surrounded by an outer housing, said housing including a top wall, vertical side walls, an exterior vertical end wall, a partial bottom wall under said motor, an interior wall parallel to said end wall and between said motor and said end wall, said means for adjusting the spacing between said stones including a sleeve portion on the periphery of said motor, a threaded rod passing through said interior wall and said sleeve and having a turning knob attached at one end thereof, whereby manual rotation of said threaded rod, via said knob, moves said motor and associated stone toward or away from said non-rotatable stone for adjusting the spacing between said stones.
A grain mill comprising:
A grain mill having
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
Term ended 4 Oct 1994 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
Portable grain grinding mills have been known for over a century, an exemplary patent of this vintage being the reissue patent to Straub (U.S. Pat. No. Re. 8,712, issued May 13, 1879). The Snyder (U.S. Pat. No. 1,571,812, issued Feb. 2, 1926) and Dimm et al (U.S. Pat. No. 2,216,611, issued Oct. 1, 1940) patents being similar in that the threaded adjusting means for the rotor stone is coaxial with the shaft of the motor. The Barber patent (U.S. Pat. No. 3,638,871, issued Feb. 1, 1972) has means for feeding grain, means for mounting a container for receiving the ground grain, and a relatively movable stator stone. A more recent patent to Reinhall (U.S. Pat. No. 3,790,092, issued Feb. 5, 1974) similarly discloses paired disks to grind vegetable produce and means to insure a coolant supply through "grooves" in the stones to avoid overheating the produce during grinding.
Among the objects and advantages of my invention are the following:
1. To provide a low initial cost and economy in operation in mills for home use.
FIG. 1 is a perspective view of the over-all mill ready for use in the home.
FIG. 2 is predominately cross-sectional, the view being taken approximately along the line 2--2 of FIG. 1.
FIG. 3 is similarly cross-sectional, taken approximately along the line 3--3 of FIG. 2.
The over-all mill is designated by reference numeral 10. The main top wall 12, and removable top wall 14, having a handle 16, are mounted between the two vertical side walls 18, to form the outer housing for the mill. A partial bottom wall 20 is shown under the motor 22 (FIG. 2), and appropriate wiring 23 for the motor appears in FIGS. 1-3. As illustrated, the periphery of the motor 22 abuts the four walls 12, 18, and 20, lending rigidity to the entire unit.
Sleeve-like portions 24 are formed as extensions on the periphery of the outer wall of the motor 22, for loosely receiving the threaded rod 26. Double lock nuts 25 are provided on the threaded rod 26 adjacent the extremities of the sleeve-like portions 24 to fix the position of the rod 26 in relation to the motor 22. The rod 26 extends beyond one end of the housing and has a turning knob 28 attached thereto. The opposite end of rod 26 passes through wall 30, and is threadably received in claw-nut 31 the claws of which are adapted to penetrate into the wall 30 and to thereby fix the position of nut 31.
The drive shaft 38 of the motor 22 passes through a bushing 39 attached to the wall 30 and an aperture 37 in said wall 30. Rotating stone 36 is affixed to the end of drive shaft 38 by a fastening means 41. The non-rotating stone 34 is permanently affixed to end wall 32 via the securing plate member 43.