US 734631 A
Description (OCR text may contain errors)
' No; 734,631. PATENTED JULY 28, 1903;
' R. A. STUBBS.
FEEDING DEVICE FOR BOLTING OR OTHER MACHINES.
APPLICATION FILED MAY 23, 1902.
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1TH: NORRIS PUERS cc, Pnom-Lmla, wnsmumou, u. c.
PatentedJuIy 28, 1909;.
PATENT ltILEY Ascent sronns, on DAYTON, OHIO.
FEEDING D EVICEFOR BOLTING OR OTHEll MACHINES.
SPECIFICATION forming part of Letters Patent N 0. 784,631, dated July 28, 1903 Serial No. 108,659. (No model.)
If aZZ whom it may concern:
Be it known that I, RILEY ASBURY STUBBS,
a citizen of the United States, residing at Day-. ton, in the county of Hamilton andState of. Ohio, have invented new and useful Improve-i ments in FeedingDevices for Bolting or other Machines, of which the following is a specification.
My invention relates to feed apparatus for flour-bolting machines, crushing-rollers, and
other machines where it is required to feed grain and like material and distribute the same uniformly. It is peculiarly well adapted to the class of bolting-machines employing a fixed bolting-cloth thrown into successive corrugations or waves, by which the crushed stock is carried forward and bolted.
In bolting-machines, and especially in the class indicated, it conduces to :the efficiency of the sifting action that the flour stock received from the reduction-rolls should be fed and distributed to the bolting-cloth uniformly and gradually over the surface from side to side, as it is desirable to avoid any forced passage of particles through the meshes of the cloth, even though the same should be produced by the mere weight of'any concentration of superincumbent material at any' one point. To properly regulate and uniformly feed and distribute the crushed stock, I have devised the mechanism herein described, which acts to feed and distribute the stock equally over the cloth from side to side, and thus insures the best results in the bolting operation.
To this end my invention consists in the I combination, with a feed-hopper, of an oscillating bar or equivalent support operating i i just below the feed-hopper, provided with a 40 series of fingers or agitators projectedupward and playing through the feed-opening into y the mass of stock and acting to prevent clogdurable in continued service.
the front wall being removed, showingthe feed-regulating bar and attachments; Figs. 2 and 3, partial front views showing the relations of the series of fingers t0 the hopper at opposite extremities of its oscillation; Fig. t, a cross-section of same, showing the relation of the feed devices to the hopper and to the bolting-cloth beneath.
Referring now to the drawings, A designates the feed-hopper of the bolting-machine, which receives the crushed stock as it comes from the reduction-rolls (not shown) and delivers the same to the bolting-cloth through a laterally-extended orifice a, at the bottom.
In the class of bolting-machines hereinbefore indicated, having a horizontally-arranged bolting-cloth, the relation of the feeding-hopper and devices is as shown by Fig. 4, the bolting-cloth beingindicated by the dotted wave-line w of said figure. In this class of bolting-machines the wave motion of the cloth gradually carries forward the larger [particles of the stock by a gentle rolling movement, While the intermovement of the mesh fibers produces a sifting action, which carries through the smaller particles. It will be readily seen that to secure the best results of this action of the bolting-cloth it is desirable to feed the material uniformly across the bolting-web,and this is accomplished by the bar B, hung upon pivoted links I) b beneath the hopper A in the line of the discharge-orifice ct, said bar having at its upper side a series of curved fingers or hooks c, projecting upward through the orifice a into the body of the hopper. I find the U-shaped fingers,such as illustrated herein, to be effective and most The bar B swings upon its pivotal hangers with an oscillatory motion in the plane of the central axis of the discharge-orifice a and is actuated to and fro by a rod or pitman p, attached to the bar, and engages a crank or eccentric p, journaled at any convenient pointon the frame. The oscillatory motion of the hooks thus producedis thus both vertical and lateral and tends to prevent packing of the material, moves it sidewise, and draws it downward into and through the dischargeopening (1, thereby aiding the passage of the uniformly. In case any foreign matter, such stock downward and distributing the same I in operation and more durable.
fully regulate the degree of rapidity of the as a bit of corncob, enters the hopper and is too large to pass through the feed-slit the fingers prevent its wedging, and it is continually pushed upward, and the finer material is allowed to pass by and feed through. Likewise any obstruction small enough to pass down beneath the hook part of the fingers is drawn down and forced through the feed-slit.
It may aid in certain cases to stagger the fingers or hooks c alternately to a slight degree, so that the action may not be confined strictly to the same plane, or they may be bent sidewise all in one direction. A T- shaped finger or even a straight finger or other forms might be used with good results, but wires bent to the form shown are efficient To more feed, I hinge one of the side walls a of the discharge-mouth of the hopper and place behind it one or more springs S, carried upon a thumb screw 8, whose shank is threaded through a fixed portion (1, a nut n bearing against the spring, so that the hinge-wall may rest against the spring, whose resistance tension may be regulated, or the shank may be set forward to bear rigidly against the hinged wall a, thus giving means suited to difierent conditions or material of varying the size of the feed-opening and the yielding adjustment of the hinged portion or gate of the hopper. Having described my invention, I claim and desire to secure by Letters Patent of the United States- 1. In combination with a feedhopper, a
feeding and distributing device including vertical fingers disposed in the discharge slit or orifice ot' the hopper, and means whereby said fingers are moved in Vertical planes and simultaneously in the direction of the length of said slit or orifice.
2. In combination with a feed-hopper of the character indicated a bar hung beneath and across the path of the discharge and capable of an endwise oscillation, and having a series of fingers projecting upward and through the discharge-orifice of the hopper, and means for oscillating said bar substantially as set forth.
3. The combination of the hopper provided with a hinged wall or gate; vertical fingers disposed in the discharge slit or orifice between the gate and the adjacent wall of the hopper; and means for imparting to the fingers a combined up-and-down and sidewise movement.
4. The combination withafeed-hopperhaving a hinged wall or gate, and an adjusting screw and spring, of a bar hung beneath and across the path of the discharge, Vertical fingers on the bar extending into said dischargeorifice, and means for operating the bar to impart thereto an up-and-down and endwise oscillation.
In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.
RILEY ASBURY STIIBBS.
H. 0. BLACK, J OHN L. H. FRANK.