US294375A - Hermann bernhard feldmann - Google Patents

Description

llNiTnn STATES PATENT OFFICE.

HERMANN Y BERNHARD yFELDMANN, 'OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-H-ALF TO STEPHEN P. M. TASKER, OE SAME PLACE.

HOPPER FOR P'ULVERIZINGIVIACHINES.

v SPECIFICATION forming part of Letters Patent'No. 294,375, dated March 4, 1884.

Application mea July 16, 188,3., (No muda.)

f) @ZZ wwm it may concern: v

Be it known that I, HERMANN BERNHARD FELDMANN, of the city and county of Phila delphia, and State `of Pennsylvania, have invented certain Improvement-s in Hoppers for Pulverizing-Machines', of which the following is a specification.

My invention is applicable for general use as a hopper with any class of devices to which 1o hoppers, as such, are applied. It is however especially designed for employment in connection with a certain pulverizing-machine invented by Villiam Henry Thompson, of Islington, county of MiddleseX,Kingdom of Great Britain, and patented to himin and by Letters Patent of the United States No. 249,489, dated November 15, 1881, and with certain apparatus, being improvements upon the same, heretofore patented to me and to Stephen P. M. 2o Tasker, of Philadelphia.

Ihe object of my invention is to produce an automatic hopper provided. with adjustable feeding appliances of such construction as to be adapted to feed a quantity of material pre- 2 5 determined according to the set of said appliances.

A preferred form of a convenient embodiment of my invention is hereinafter described and'claiined.

3o In the accompanying` drawings, Figure 1 is a central vertical sectional elevation of a hopper conveniently embodying my improvements. Fig. 2is `a top plan view of the same, section being supposed in a plane on the dotted line a a of Fig. 1. Fig. 3 is a front elevation of the hopper viewed from the right hand i of Fig. 1 in the direction of the arrow.

In the drawings, A is the casing of the hopper, it being any suitably-shaped inclosing 4o case or frame providedwithtwo convergentlyinclined chutes, B, upon which the material is fed, and through an openspace, a, between which the material is discharged upon a horizontal diaphragm, C, suitably affixed across the casing and constituting the bottom thereof. One side of the horizontal diaphragm is slotted to form the discharge opening D, through which the material descends into the pulverizingmachine. The arrangement of 5o the two inclined chutes relatively to the diaphragm is substantially such asis shown in the lchines from any motor-shaft.

drawings, and such that the material fed upon` caused to descend through the above-described opening are the following: f

I E is an oscillatory feed-plate of the breadth of the casing, and suspended free for oscillation upon an axial rod, e, framed in the casing. parted to the feed-plate E cause` it to advance the material descending through the opening a between the chutes upon the horizontal diavphragm, across said diaphragm to the discharge opening therein,v through which it gravitates.

As a convenient device for imparting the oscillatory movement to the feed-plate, I have devised the following contrivance, which may be operated direct from the shaft of the Thomp- Continued impulses of oscillation im# son pulverizer, or inthe case of other ma- F is a motor-shaft,preferably carrying a flywheel, G, and provided with an eccentric, H, about which is applied an eccentric yoke, I, which is connected by means ofl a pitman, J, with the lower arm of a bell-crank lever,-K, suitably supported from the hopper, the upper arm of which is connected withone eX- -tremity of a link or connecting-rod, L, the other extremity of which is'pivoted to the oscillatory feed-plate. revolution of the eccentric through theinstrumentality of the yoke and pitman occasions the vibration of the bell-crank, theconsequent reciprocation of the link or connecting-rod,and the oscillatory movement of the feed-plate E.

As a means of conveniently controlling the extent of oscillation of the feedplate, I have made the point of connection of the link with the vertical arm of the bellcrank adjustable by supporting the link upon a pivot-pin, M, projecting from -a sliding sleeve, N, upon the upper end of the bellcrank, theA position f of which sleeve with respect thereto being controlled by a fixed adjusting-screw, Q, swiveled It will be obvious that a A IOO in the bell-crank and threaded through the sliding sleeve. The position of the pivot-pin with respect to its distance from the fulcrum of the bell-crank lever regulates the extent of throw of the oscillatory feed-plate.

I is a spring-controlled door, which constitutes one of the sides of the casing opposite to the oscillatory feed-plate. The ofice of this door, which is suspended from an axial rod above, and which below bears againsta spiral spring, p, is to permit of the discharge of such an accumulation of material, under the very rapid operation of the device, as would be too great to escape through the discharge-opening D.

The operation of the oscillatory feed-plate is to advance a predetermined quantity of material deposited upon the horizontal diaphragm across said diaphragm into the discharge-open ing formed therein. rlhe hopper is preferably continuously supplied with material,as its discharging capacity is very great.

Such being adescription of a preferred form of my apparatus, it is proper for me to state that other means than the eccentric, bell-crank, and connections may be employed toimpart the oscillatory throw to the feed-plate, and that I have simply instan ced the arrangement represented as one convenient for the purpose.

I am aware that I am not the rst to employ an oscillatory plate in connection with a hopper, broadly considered, and to such device, broadly, I lay no claim.

Having thus described my invention, I claim and desire to secure by Letters Patent- 1. Ina hopper, the combination of an inclosing-casing, a diaphragm or iioor therein provided with a discharge-opening, chutes or kindred devices adapted to direct the deposit of material fed into the casing upon the diaphragm, an oscillatory feed-plate adapted to occasion the feed of a predetermined quantity of material deposited upon the diaphragm to the discharge-opening therein, and means for occasioning the oscillation of the feed-plate, substantially as set forth.

2. rlhe combination, with an inclosing-casing containing convergent chutes, and a diaphragm provided with a discharge-opening, substantially as set forth, of an oscillatory feedplate, a link, a bell-crank lever, an eccentric yoke, and an eccentric, all substantially as set forth.

3. In combination with a casing for a hopper provided with the inclined convergent chutes and the horizontal diaphragm and the oscillatory feed-plate, the spring-controlled door, substantially as and for the purpose set forth.

In testimony whereof I have hereunto signed my naine this 2d day of July, A. D. 1883.

HERMANN BERNHARD FELDMANN.

In presence of- J. BoNsALL TAYLOR, JOHN JoLLnY, J r.

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