US896656A - Feeder. - Google Patents

Description

No. 896,656. PATENTED AUG. 18 1908.

P. M. MOTT.

FEEDER. APPLIOATION FILED SEPT. 12, 1907.

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FEEDER.

APPLICATION FILED SEPT.12,1907.

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FRANK MAY MOTT, OF DOUGLAS, ARIZONA TERRITORY.

FEEDER.

Specification of Letters Patent.

Patented Aug. 18, 1908.

Application filed September 12, 1907. Serial No. 392,488.

To all whom it may concern:

Be it known that I, FRANK MAY MoTT, a citizen of the United States, and a resident of Douglas, in the county of Cochise and Territory of Arizona, have invented a new and Improved Feeder, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved feeder, which is simple and durable in construction, easily adjusted, not liable to get out of order, more especially designed-for feeding ore and other materials to stamp mills and other machinery or devices, and arranged to permit of governing the amount of the material fed according to the capacity and working of the stamps, to insure proper reduction of the material without danger of choking the mill by overfeedmg.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claim.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of the improvement on the line 11 of Fig. 2 Fig. 2 is a plan view of the same; Fig. 3 is an enlarged sectional side elevation of the adjustable tension device for the scoop; Fig. 4 is a sectional side elevation of a modified form of the improvement; Fig. 5 is an enlarged sectional side elevation of the throw regulating device for the scoopshown in Fig. 4, and Fig. 6 is an enlarged sectional plan view of the same on the line 66 of Fig. 4.

Outside of the bin A containing the ore or other material, is secured a chute B into which passes the material from the bin A by way of the usual ore bin gate 0, and the lower end of the chute B delivers the material to a scoop D pivoted at E on a bracket E secured to the underside of the chute B. The scoop D is open at both ends and its sides fit against the sides of the chute B, so that the material passing down the chute B readily passes into the scoop D to fill the same. When the scoop D is in its normal position, as illustrated in Fig. 1, its bottom is in an approximately horizontal position, so that the material is held in the scoop D, but when the scoop D is rocked downward into the position shown in dotted lines in Fig. 1, then the material in the scoop drops out of the same to the machine to be fed.

The scoop D is provided with arms F and G extending in opposite directions from the top and bottom of the scoop, as plainly indicated in Figs. 1 and 2, and the arm F straddles with its outer forked end F the stem H of a stamp mill of any approved construction, and to which the material is to be fed by the chute B. The top of the forked end F is adapted to be engaged by a collar II on the stem H, so that when the latter moves downward the collar H engages the forked end F, thus swinging the arm F and consequently the scoop D downward, for the latter to discharge the material to the stamp mill. When the stem H moves upward, then the scoop D is immediately returned to its normal non-discharging position by the action of a spring device I, connected with the arm G. This spring device I is provided with a rod I having its ends I I threaded, the threaded end I screwing into a boss E formed on the bracket E. A nut J screws on the threaded portion I against the boss E to securely hold the rod I in position. The lower end I of the rod I extends through the slotted free end G of the arm G (see Fig. 3) and on this threaded end G screws a nut K, for the free end of the arm G to rest on when the scoop D is in normal non-delivering position, as shown in Fig. 1.

The nut K is adapted to be locked in place by a jam nut K, and on the said nut K is secured a sleeve K through which extends loosely the rod I. The top of the free end G of the arm G is provided on opposite sides with upwardly extending lugs G resting on the under side of a washer L, mounted loosely on the sleeve K and pressed on at its upper surface by one end of a spring L coiled around the sleeve K and the rod I. The upper end of the spring L abuts against a nut L screwing on the upper threaded end I of the rod I, to permit of adjusting the tension of the spring L. The nut L is adapted to be locked in place after the desired adjustment is made by a jam nut L screwing on the end I of the rod I. Now by the arrangement described, the arm G and consequently the scoop D is spring-- pressed, to return the scoop D to normal nondelivering position as soon as the stem I-I rises. Thus during the upward movement of the stem H the feeding of the material ceases, and during the downward movement of the stem H the scoop D is tilted to allow the ma- In the modified form illustrated in Figs.

4, 5 and 6, the chute B is secured to the ore bin A, and the scoop D is pivoted at E on a bracket E attached to the under side of the chute B. The rearward extending arm G of the scoop D is pivotally connected with an extension l on a cylinder N, in which reciprocates the piston O pivotally connected with the crank P of a crank shaft 1? driven by suitable means, such as a pulley P and belt connected with other machinery. The piston O is made hollow and in it extends the head Q of a stop rod Q screwing in the bottom of the cylinder extension N, the lower outer end of the stop rod Q being provided with a suitable handle Q under the control of the'operator, for screwing the stop rod Q up or down in the cylinder N and its extension N. A jam nut Q screws on the threaded lower end of the stop rod Q and abuts against the lower end of the extension N, to lock the stop rod Q in place after the same is adjusted. Now by the arrangement described the rotating crank shaft P imparts motion to the piston. O, which by coming in contact at either end with the head Q imparts an up and down movement to the latter, and consequently to the cylinder N and its extension N in which the stop rod Q is secured. The up and down movement thus given to the cylinder N and to the extension N causes a locking of the arm G and the scoop D to allow the material in the scoop to drop down to the mill, to be reduced by the latter in the usual manner. By adjusting the rod Q more or less throw can be given to the 'cj linder N and to the extension N, and

consequently to the scoop D, to suit the nature of the material under treatment at the time.

The feeder shown and described is very simple and durable in construction, and can be readily adjusted to vary the amount of material periodically discharged from the scoops D or D, and the arrangement per mits of feeding any kind'of ore, wet or dry fine or coarse, or fine and coarse mixed.

'The feeder may be readily applied to any and all kinds of mills, jigs, launders or conveyers of any kind or to any kind of machinery needing an automatic feed.

Having thus described my invention, I claim as newand desire to secure by Letters Patent:

A feeder for stamp mills, comprising a fixed chute connected with the supply, a rocking scoop forming a continuation of the lower end of said chute for the material passing down the chute to fill the said scoop, an arm on the scoop adapted to be engaged by a movable part of the stamp mill, a second arm on the scoop and a spring device connected with the arm to hold the scoop normally in a closed or non-delivering position, said device comprising a rod threaded into the chute and passing through the arm, a spring encircling the rod and bearing against the arm, means for adjusting the tension of the spring, and means for adjusting the arm on the rod.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK MAY MOTT. Witnesses W. S. DIxoN, NORMA G. MURPHY.

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