US492347A - Flour-bolt - Google Patents

Description

(noModeL) M CLARK .FLOI'IR'BOLT. I

5 Sheets-Sheet 2.

Patented Feb. 21, 1893.

(No Model.)

Q 5 Sheets-Sheet 3. M. W. CLARK.

- FLOUR BOLT.

Patented Feb. 21, 1899 M ya Jay}

UNITED STATES PATENT OFFICE.

MYRON W. CLARK, OF PARMA, MICHIGAN, ASSIGNOR, BY MESNE ASSIGN- MENTS, OF ONE-HALF TO THE EDWARD P. ALLIS COMPANY, OF MIL- WAUKEE, WISCONSIN.

FLOUR-BOLT.

EPECIFICATION forming part of Letters Patent No. 492,347, dated February 21, 1893. Application filed November 18, 1886. Serial No. 219,319. (No model.)

T0 at whom it may concern..-

Be it known that I, MYRON W. CLARK, a citizen of the United States, residing at Parma, in the county of Jackson and State of Michigan, have invented certain new and useful I mprovements in Flour-Bolts, of which the following is a specification, reference being had therein to the accompanying drawings.

Figure 1 is a side elevation of a flour bolt containing my invention, parts of the casing being broken away to show the structure, part of the bolt cloth of the reel being omitted. Fig. 2 is a longitudinal vertical section taken on dotted line 00 as Fig. 4. Fig. 3 is a vertical transverse section. Fig. 4, is a rear elevation, parts of the casing being broken away. Figs. 5, 6, 7, 5 6 7 are detached views of the bearers, which support the cloth hoops or rings. Fig.8 is a transverse vertical section of a modification. Fig. 9 is a vertical section on line y 3 Fig. 8.

The object of this invention is to utilize a much greater portion of the bolting cloth than is customary with slowly moving reels of the ordinary construction; and it consists in certain new constructions and combinations of parts, as will be hereinafter fully set forth.

Like letters of reference indicate like parts in all the figures.

AArepresent generally the frame-work and easing, within which the operative parts of the bolt are located.

B is the central driving shaft mounted in suitable bearings and having a belt pulley fastened upon it. 7

Within the bolting cloth there is a closed drum or hollow cylinder which I will describe. Of this drum, 0 is the head nearest the tail end, that is the discharging end of the bolt. The drum head has a central sleeve with a set screw 0 for securing it to the central shaft,

' B. D is a similar head at the receiving end of the bolt, and which may be secured to the shaft B, when desired, by a key or setscrew. E is a shell mounted upon the drum-head. which it fits closely at either end. This shell may be either sheet metal, wood, or other suitable material; and its surface may be either circular in cross section or ribbed or corrugated as shall be desired or found advantageous according to the circumstances of the case.

I will describe the structure of the reel which surrounds the drum. F is a short cylinder section or tube, supported at the head end of the bolt, into which opens a hopper or feed spout, a. f is a worm mounted on shaft B to feed the material from the hopper, a, through the tube section F and thence into the reel. G g is the reel head at the receiving end of the bolt; 9 9 being arms which connect the centrally open flange portion with a hub surrounding the shaft B, and secured thereto by set screw b or other equivalent device. At the tail end of the reel there isa ring, flange, or centrally open disk, I, with a rearwardly projecting flange 2'; the outside diameter of the part I being the same as the outside diameter of the reel head Gg. Thus the part I is adapted to serve as a separate ring for one end of the bolting cloth. J is a hub mounted on shaft B to which it is sesured and preferably made adjustable thereon by a set screw, j, for a purpose which will be herein after explained. Of course the hub and flange I are connected by means of spokes. 1070 are inclined arms projecting forward and inward from the flange I, to the drum-head O, which arms may be made to partially support the said flange. It is not indispensable that these arms should be integral with both the ring and the drum-head. In fact, some of the adjustments can be facilitated by making these parts in two pieces, so that one can be rotated about the central shaft independ ently of the other. K K are stay rods screw threaded at their outer ends and passing through the reel head G g and the flange I, to which parts they are firmly secured by means of nuts; there being by preference two nuts at either end, at each of the stay rods, as indicated in Fig. 2. L L are elevators mounted on the stay rods by means of centrally open carriers surrounding the stay rods, part or all the carriers being provided with laterally pr0- -jecting lugs, Z, for a purpose which will be explained.

The bolting cloth is indicated at M, and is supported intermediate of its ends upon aseries of cloth hoops or rings NNwhenever the ICC length of the bolt is such as to make one or more supports of this character desirable.

In Figs. 1 to 7, each cloth ring is mounted upon the stay rods by means of interposed bearers, each bearer consisting, in this in stance, of a stirrup ring, n, the-circular part of which has an inside diameter a little greater than the outside diameter of the stay rod, and has a screw threaded hole in the outer angular portion. The saddle part N has the ends of its legs concaved to fit the stay rods. The hole in the upper flat part of the saddle registers with the screw threaded hole in the angular part of the stirrup and receives a bolt or screw which passes through a countersunk hole in the cloth ring or hoop, whereby these parts are firmly held together in proper working relation to each other and to the stay rods. The bolting cloth at the tail end of the reel is turned down over the outer edge of the flange I, toward the rearward projecting flange 71 against which it is clamped by a strap or band 0, or a cord or other suitable device.

At the forward or head end of the bolt and between the reel-head G g and the casing there is a cloth tightener, consisting essentially of a metal ring P, having a wooden ring p, attached to its front face to receive the front end of the bolting cloth which is tacked thereto.

Although I propose to make the parts P, p of different materials, yet they constitute essentially a single movable and adjustable ring, of which the wooden part is specially adapted to have one end of the bolting cloth attached to it.

Q Q is a series of bolts, screw threaded at their inner ends where they are seated in the reel head G g. Each bolt is provided with a flange or shoulder q, engaging with the inner face of the ring P through which the outer end of the bolt projects; so that by turning these bolts in the proper direction, the ring P p can be moved forward or outward from the reel head, and the bolt cloth thereby properly stretched; this cloth tightener ring and the adjacent reel-head being of substantially the same diameter as will be readily understood without further explanation.

R is a partition a short distance inside the tail end of the casing. This partition has a central opening to receive the rearward projecting part 2', of the flange, and the space between the flange and the partition may be packed with wool or its equivalent, to prevent leakage at this point.

The space between the partition R and the tail end casing, constitutes a tailings chamber which is hopper bottomed as indicated in Fig. 4, and opens into a trap consisting essentially of revolving wings S S which run in close proximity to the surrounding walls, 3 sin such manner that the tailings are discharged downward through the spout '1", while the wings effectually intercept air currents which otherwise might pass through the spout.

In setting up and operating this bolt, I propose to fasten the drum securely to the central shaft, then place the reel head G g and the flange I, loosely on the shaft; the elevators are then placed on the stay rods and the ends of the rods inserted in the reel heads and the flange, after which the reel heads and flange are firmly fastened to the shaft, B. Preferably I locate the head.G g with its flange part G about five inches from the front end of the drum; and to prevent leakage I attach a ring H h to the reel head. The ring is provided at its inner edge with a vertical flange h for this purpose and the space between the ring and the shell F of the feeder is packed, as shown at V, preferably with sheep skin having the wool attached, which fills the annular space between the ring and the shell. When it is desired, the elevators may be arranged somewhat spirally relative to the bolting cloth and the drum before the reel head and ring are permanently attached to the central shaft. In case the ring or flange I, and the inclined arms is 7c are made integral with the drum-head O the spiral direction of the elevators may be regulated by turning the reel head G g upon the shaft B. But when those parts are not made integral it may be found more convenient to regulate this spiral arrangement by turning the flange I and its hub upon the shaft after the reel head G g, has been secured to the shaft. When preferred, however, the arms it it may be omitted. By preference the bearers which are interposed between the cloth rings and the stay rods are so located relatively to the swinging carriers to which the elevators are attached, that the projecting lugs Z, of the carriers will engage with the bearers and limit the oscillation or swing of the elevators about the stay rods. The conveyers are driven from the shaft B by means of chains or belts traversing sprocket wheels or pulleys as indicated in Fig. 1. When the bolt is in operation material is fed in through the hopper a, and thence through the shell, the worm, and the openings between the arms g g, of the reel head to the bolt cloth. As the cloth, the elevators, and the drum revolve in the direction indicated by the arrow in Fig. 3, part of the material is caught by the elevators on the upward moving side of the bolt and discharged therefrom on the outer surface of the drum, whence it is returned to the bolting cloth; some of it going over the drum and being delivered to the bolting cloth on the downward moving side of the bolt. Part of the material which is carried over the top of the drum is delivered to the bolting cloth at a comparatively short distance below the highest point of the drum; owing in part to the centrifugal action upon the material which is producedby the rotation of the drum. It will be readily understood from an examination of Fig. 3 that the relative positions of the elevators and of the downward inclined surface of the drum are such as to greatly facilitate the bolting or sifting action, because they assist in properly directing the material around the inner surface of the bolting cloth and in contact therewith not only upon the upward moving side of the reel but also upon its downward moving side. That is to say, as shown in Fig. 3, the elevators have their outer or free edges set away from the cloth hoops sufficiently to afford a space between the cloth and the elevators wide enough to permit a part of the chop or flour to fall back from the elevators to the cloth and to descend over the ascending side of the reel. So too, a quite wide space is left between the elevators and the drum, so that the elevators may not interfere with the movement of material over the surface of the drum. The thickness of the cloth hoops and the covering applied thereto, as plainly shown in Figs. 2, 3 and 8, would of themselves give space sufficient for a considerable back fiow of material,-but the proper working of the reel is best assured by keeping the elevators out of contact with the hoops, which may be done by proper arrangement of the stops on the elevator clips or cast lngs.

In operating this bolt, it will be found that with a proper speed of rotation, say about thirty revolutions per minutefor a reel of thirty six inches in diameter, the material will be sifted through the cloth on both the upward moving side and the downward moving side up to a line drawn horizontally through the reel about half way betwen its axis and its highest point. Thus nearly the whole area of the cloth will be made available for bolting purposes.

While on some accounts I prefer to use a cylinder shaped drum,yetI do not wish to be limited thereto; because its surface might be corrugated, ribbed or troughed, as is sometimes done in this class of bolts. Nor do I wish to be limited to the use of a drum which rotates in the same direction with the reel or at the same speed. I p

In Figs. 8 and 9, I dispense with the stay rods K K and the bearers I n for connecting the reel heads and supporting the cloth, and use instead thereof spiders TT firmly secured to the shaft 13 with bars U u attached at their ends to the spiders by means of bolts 25 t or their equivalents. These bolts may pass radially through the ends of the barsinto the peripheral flanges of the spiders; or arms to the outer ends of which the bars may be attached by means of bolts passing through the bars and the lugs on lines which are substantially at right angles to the radial lines on which the lugs are formed. In either event the bars should have outward projections or lugs to which the cloth rings are bolted or otherwise secured; and by preference the outer faces of these lugs are grooved to receive the cloth rings and thus assist in supporting them against displacement. In these figures there are also a similar cloth tightening ring P p and adjusting bolts Q Q which have their inner ends seated in either the arms or.

the flange of the spider at the head end of the bolt. In this modification the packing ring I-I his attached to and carriedby the cloth tightening ring Pp there being of course a suitable packing material in the annularspace between the ring and the shell of the feeder.

With the construction shown in Figs. 1 to 4, there is liability, in case the cloth does not fit tightly to the flangeG of the reel head, of material passing between this flange and the bolt cloth, and then through the ring into the conveyer and being mixed with material which has been bolted. To guard against such occurrence I propose to use a similar packing ring in connection with and attached to the tightening ring as is indicated in the drawings at H; and where this last referred to packing ring is used it may be found 'advantageous to omit the packing ring H h from the construction shown in Figs. 1 to 4. In other words, the packing ring H it may be made fast either to the reel head or to the tightening ring as preferred, but there is obviously noneed of using two such rings.

In the modified form shown in Figs. 8 and 9, the elevators L L are provided with pivots w w at their ends, these pivots being seated and turning in the flanges of the spiders; the arrangement of the parts being such that the swinging edges of the elevators engage with the cloth hoops during part of each revolution of the bolt to pick up material, and as they move upward they automatically tilt inward and discharge the material upon the drum.

WVhile I have indicated a relative arrangement of these parts in Fig. 8 which will operate satisfactorily under ordinary circumstances yet I do not wish to be limited thereby; itbeing apparent that the point in the rotation of the bolt at which the-elevators will tilt inward and discharge their load, may be varied by changing the positions of the pivots toward or from the center of the reel, as may be found most advantageous under any particular circumstances or conditions.

The cloth stretcher is not claimed by me, its subject matter having been held in an intert'erence proceeding to be public property.

The construction of parts shown in Figs. 8 and 9, is made the basis of an application filed as a division of the present one, on the 25th day of November, 1S92,Serial hid 153,075, and hence is not specifically claimed herein.

The feature of space between the edges of the elevators and the bolting cloth, is made an element of claims in another divisional application filed by me on the 24th day of January, 1883, Serial No. 459,550, and is not specifically claimed in this specification.

The subjects matter of claims 1 to 5 inclusive have been involved in interference with an application of one Charles A. Smith, Serial No.227,157,and with applications of one Zenas O. Eldred, which interferences were finally decided in my favor. The remaining claims in this case involving matters not claimed by others, and the matter of space between the Ito . elevators and the cloth being declared to render another interference probable, the last mentioned division has been made in order that features and combinations as to which priority has been awarded to me may be patented without further delay.

WVhat I claim is- 1. In a flour bolt the combination of a rotating reel, a drum within the reel, a series of elevators carried by the reel, and movable relatively thereto, for the purpose of discharging material upon the drum substantially as set forth.

2. In a flour bolt, the combination of a rotating reel, a drum within the reel, a series of spirally adjustable elevators carried by the reel, substantially as set forth.

3. In a flour bolt, the combination of a rotating reel, a drum within a reel, and a series of elevators pivoted to the frame of the reel, and projecting toward the drum substantially as set forth.

4.. In a flour bolt, a reel having two heads separately adjustable around the reel shaft, stay rods connecting with the reel heads, and elevators mounted on the stay rods, substantiallyas set forth.

5. In a flour bolt, the combination with the reel and the drum, of a series of elevators, and means substantially as described connecting the elevators with the reel, whereby, as the reel rotates, the edges of the elevators are moved away from the bolt cloth to permit material to pass between the elevators and the bolt cloth on the downward-moving side of the bolt, substantially as set forth.

6. The combination in a flour bolt, of a rotating reel, a smooth drum within the reel, and a series of intermediate tipping elevators.

7. The combination in a flour bolt, of a rotating reel, a smooth drum within the reel,

tating reel, a smooth drumwithin the reel, and a series of spirally adjustable tipping elevators carried by the reel, substantially as set forth.

9. In a flour bolt, the combination of a ro- 5o tating reel, a smooth drum within the reel, and a series of elevators pivoted to the frame of the reel and projecting toward the drum, substantially as set forth.

10. In a flour bolt, the combination of a bolting reel, and a smooth internal drum, a series of elevators, and means substantially as described, connecting the elevators with the reel, whereby as the reel rotates, the edges of the elevators are moved away from the cloth on the downward side of the bolt to permit material to pass between the elevators and the bolt cloth on the downward-moving side of the bolt, substantially as set forth.

11. In a flour bolt, the combination of a rotatable reel, a drum within the reel, a series of elevators between the drum and reel, and swinging carriers for said elevators, provided with stops to limit their oscillation and the consequent movement of the elevators.

12. In a flour bolt, the combination of a rotatable reel, a drum within the reel, and a S64 ries of elevators between the reel and drum, adapted to be adjusted to and from lines parallel with the axis of the reel.

13. In a bolting reel, the combination of an external bolting cylinder, an internal drum, and tipping elevators between the bolting cylinder and the drum.

14. In a bolting reel, the combinationof an external bolting cylinder, a smooth imperforate internal drum, and elevators between the reel and drum, said elevators being set away from the drum.

In testimony whereof I aifix my signature in

Images