US882925A - Mill-stock mixer and distributer. - Google Patents

Description

No1 882.925.l PATBNTED MARLZ, 1.908.'

F. C. BoYNToN.

MILL STOCK MIXER ANDDISTRIBUTBRQ APPLICATION rILnD mas, 1907.

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UNITED sTA'rEsrarENr oEEioE. i

* FREDERICK (l. BOYNTON, O

No. 882,925, Specification o To all whom 'it may concern:

' Be it known that I, FREDERICK C. BOYN- TON, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Mill- Stock Mixers and Distributers, of which the following is a specification.

My invention relates to devices for use in flour-mills for mixing and distributing or feeding stock to the various machines.

The object of my improvements is to roduce an apparatus that is capable of tioroughly mixing material or stock of different kinds and discharging the mixture uniformly and in desired quantities.

My improved apparatus comprises a cylindrical casing containing series of revolving mixers or flights in radial arrangement7 and means for introducing material to the casing and for discharging it in regulated quantities. Such improvements are illustrated in 'the accompanying drawings, in which- Figure 1 is a central vertical section of my improved mixing and feeding machine; Fig. 2 is a horizontal section on the irregular line 2-z of Fig. 1; Fig. 3 is a vertical section of the device for regulating the discharge of material; Fig. 4 is a horizontal section of the same; and Figs. 5 and 6 are detail views yof one of the flights.

In the drawings 1 designates the legs and 2 the cross-pieces of the supporting frame of the machine. On the top of the frame is a short cylindrical .casing 3 the bottom of which is secured to the frame by bolts 4. On the lower cross-piece is mounted7 a driving-shaft 5 carrying a miter-gear 6,' Vand above it is supported a spindle or vertical shaft 7 having a miter-gear 8 in mesh with the gear 6. The spindle is supported by means of a collar 9 in contact with a boss 10 formed on a cross-piece 11 in which the spindle has a bearing and the spindle also has a bearing at 12 in the upper frame cross-piece. Power may be applied to the shaft 5 by means of a pulley and belt for rotating the spindle.

To the head of the spindle 7 is secured by a set-screw 13 the hub 14 of a spider having a plurality of arms 15, preferably four, radiating from the hub. A series of flights or mixers 16 is formed on or attached to the under surface of each arm 15, preferably at angles of about forty-five (45) degrees to the axis of the arm, with their lower ends ar- F MINNEAPOLIS, MINNESOTA.

MILL-STOCK MIXER AND DISTRIBUTER.

f Letters Patent. Patented March 24, 1908.

Application filed August 8, 1907 Serial No. 387,592.

ranged on a plane a short distance above the bottom of the casing. The flights preferably consist of-flat blades having their upper portions contracted and provided with curved flanges 17 for the purpose of strengthening the bases of the nights.

The top of the case consists of a fixed middle portionA 18 and lids 19 hinged to its edges for providing convenient means for access.to the interior. The feed-spout 2() for supplying material to the machine is arranged to discharge 'at the center of the cover and beneath its mouth is an inclined guide-trough 21 for catching the descending material and properly delivering it to the mixers. This trough is preferably semicircular and is attached by a fastener 22, or otherwise, over the center of the spider so as to revolve with the spider and deliver the stock in a circular path coincident with the circle of action of the inner flights. By this arrangement an accumulation of stock at the center is avoided and the stock is subjected to the action of the mixers from the point of admission throughout its travel to the sides of the case.

In the sides of the case are discharge openings 23I at any desired intervals, and connected with them are spouts 24 for conduct- 'ing the material to the proper machines for further treating it.

The quantity of stock fed from the machine into any of the spouts 24 is controlled by a feed -regulaton This regulator conthe upper portion of the spout 24, and'having a tangential flange 26. The body 25 and flange 26 are preferably soldered or otherwise attached to a curved plate 27 which may be secured to the case 3 at the sides of the o enings 23 by screws or rivets 28 or in any esired way. A cover 29 at the top and a base 30 at the bottom of the flange 26 inclose the space between the flange and the plate 27. An opening 31 in the cylinder 25 is provided for the passage of material from the case opening 23 to the discharge spout 24.

Within the body 25 is a short concentric cylinder 32 which has an opening 33 in its side for the passage of material to the spout. This cylinder is open at the bottom and closed at the top by a cover 34 'the rim of which seats on the upper edge ofthe body 25. This inner cylinder or tube is ada ted to be turned Within the outer tube, an a handle 35 is providedon the cover 34 for that purpose, to adjust the location of the opening 33 with reference to the opening 23 for regulating the discharge of stock. 'lt is desirable to have the revolu ble tube fit close enough within the fixed. tube to be held in positions of adjustment by frictional contact, without th'e employment of a holding device. Such feed-regulator furnishes convenient and eilicient means for regulating, or cutting off, the feed of stock from the machine to a discharge spout.

Having described my invention, what I claim and desire to secure by Letters Pat ent is l. A mill-stock mixer and distributer, comprising a casing providing a circular chamber having a plurality of outlets at its sides, means for introducing stock to the center thereof, a revolving spider therein having radial arms provided u ith flights adapted to work the stock from the center to the circumference, discharge spouts, hollow rotary valves having openings in their sides for controlling the passage of stock from said outlets to said spouts, and means for adjustably rotating such valves, substantially vas set forth.

2. A mill-stock mixer and distributer, comprising a casing providing a revolving feed-trough for introducing stock in a circu lar path around the center of the chamber, a revolving spider in the chamber having radial arms provided with flights adapted to work the stock from the center to the circumference, discharge spouts connected with said outlets, and controllable valves therefor for regulating the passage of stoclcthrough' trolling the passage of stock from said outlets,

to said spouts, and tangential flanges and passage-n ays for directing the stock to such openings, and means for adjustably rotating such valves, substantially as set forth.

4. A mill-stock mixer and distributer, comprising a casing providing a circular chamber having a plurality of outlets at its sides, means for introducing stock to the center thereof, a revolving spider therein having radial arms provided with flights adapted to work the stock from the center to the circumference, a feed-trough carried in inclined position by the spider for introducing stock in a circular path around the axis of the spider, and discharge spouts connected with said outlets, substantially as set forth.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses this 29th day of July, 1907.

FREDERICK C. BOYNTON. Vitnesses:

P. H. GUNCKEL, H. A. BowMAN.

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