US1040237A - Door mechanism for ore-pockets or similar receptacles. - Google Patents

Description

R. B. PEARSON.

DOOR MECHANISM FOR ORE POOKBTS 0B. SI MILAB. BBOBPTAOLES.

' APPLICATION FILED APR. 14, 1911.

1,040,237. Patented Oct. 1, 1912.

2 BHEETS-BHEET 1.

| I I I I a 1 wmvsssss: mvsuron .Q MMJ MBQNW R. B. PEARSON. DOOR MECHANISM FOR ORB POOKETS 0R SIMILAR BEGEPTAOLES.

rum-r1011 nLnn APR. 14. 1911.

1,040,237.. Patented Oct. 1, 1912.

' 2 SHEETS-SHEET 2.

WITNESSES: INVENI'OR PATENT OFFICE.

ROBERT B. PEARSON, 0F DULUTH, MINNESOTA.

DOOR MECHANISM FOR .ORE-POCKETS OR SIMILA B RECEPTACLES.

Specification of Letters Patent.

Application filed April 14, 1911. Serial K0 6213136.

Twill whom it may concern;

Be it known that I, ROBERT B. PEARSON, a

citizen of the United States, and a resident of Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Door Mechanisms for Ore-Pockets or Similar Receptacles, of which the following is a specification..

This invention relates more particularly to that class of ore pockets, bins or similar receptacles adapted to store one or more carloads of ore or other granular material The principal objedt, therefore, of this invention is to provide a mechanism whereby a larger and wider door than heretofore nomically, thus insuring a more re. id deliability to choking and arching because to the operation thereof. In the accompanying drawings Figure 1 is a front elevation of a portion of an ore pocket, having a door and door mechanism Patented Oct 1, 1912.

used, can be handled and controlled coo- B livery of material with greatly essenfi the larger discharge opening, thus eliminating considerable delay and expense incident 155' below-by manual labor before the remainembodying my invention, While Fig. 2 is a vertical sectional elevation taken on the line w-w of Fig. 1,-looking in the direction of the arrows; Fig. 2 an enlarged plan sectional detail taken on line y-y of Fig. 2. Figs. 3 and t are diagrammatic views illustrating the operation of the door. v

Referring to the drawings, 1 is the ore pocket having a bottom portion 2 inclined toward the discharge opening 5 in the front wall 3. This front wall 3 is reinforcedby the posts 4, one on each side of the outlet 5, towhich posts the side plates 6 of the opening 5 are fastened. ThlS opening 5 is closed by a door 7, said door being supported in place bynovel semi-automatic mechanism which forms the basis of this invention and Ewill herein be described in detail.

Referring again to the drawings, the door *7 preferably of comparatively large size to facilitate the unloading of the pocket, is provided at the upper portion of its lateral edges with gudgeons 8, sliding in grooves 9 in the vertical posts 4. The respective lower lateral edges of the door are attached pivotally by means of thelugs 10 to simple link motions, each of which consists of struts 11 and links 12 pivoted together at their outer ends and having their opposite or inner ends pivoted respectively to the door 7 and side plates 6 substantiall as shown, the bearin on the pocket ing preferably somew at below that on the door and outwardly therefrom, the struts and links being free to revolve'about their pivots through part of a circle in a vertical plane at right 1 angles or approximately. so to the door 7 or front .wall 3 ofthe poc et. 4

The object in placin the fixed pivot of ,the link'motion'below t e levelof the door pivot at its lowest or closed position is to so 11 proportion the several parts of the-linkmotion as to give the outenends of thestruts at a time; and having a discharge opening wherefrom it is desired to deliver the material very rapidly and still be able to cut off the delivery thereof at will of the operator, and has particular reference to the construction and arrangement of the door; mech- 20 anism by means of which this object may be or attained, as will more fully hereinafter appear.

' The principal object of my invention is to so construct the 'door and attached mechanisms as to provide a simple, economical and efficient door action which will be semiautomatic in opening and comparatively, easy of closure against a head of ore or other material in the pocket when it is desired to stop the flow of same. This object I attain in the manner hereinafter set forth.

The invention consists principally in thenovel structural features and combination and arrangement of parts, or mechanisms, 35 whereby the door is held in place audits movements controlled, as hereinafter illustrated, described and claimed.

In illustrating and describing these improvements I have only illustrated and will describe that which I consider to be new, taken in connection with so much as is old as will properly -disclose the invention to others and enable those skilled in the art to practice the same, leaving, out of consideration other and well known elements, which if set forth herein would-only tend to confusion, prolixity and ambiguity.

In the art to which this invention relates it is well known that with the present size of doors used, the ore when damp or sticky frequently arches clear across the door opening, causing much difficulty, and involving considerable time,, labor and ex ense to break the arched materialgenera ly from inginaterial can be discharged;

and links a uniformly downward movement about the fixed pivot from the thrust of the material in the bin, thus holding the outer ends of the struts and links against the cams or dogs or causing them to drop with certainty to the stops 17 when the cams 13 are disengaged by the operator.

A short distance above the' level of the door pivots when the door is in the closed position, and just outside the path of the outer ends of the links-12 extends a cam shaft 14- parallel to the door 7 and revolubly attached to the side plates 6 by means of the brackets 15hr in any other suitable manner, said cam shaft having keyed or pinned thereto, a controlling handle 16 and two cams or dogs 13 adapted to be projected .into the path of said links 12 at some little distance above the level of the door pivots of struts 11 when door is in the closed position; in such a manner as to serve as a stop for the outer ends of said. struts and links 11 and 12 holding the same at such a height that the door 7 can be forced down through a How of ore in the discharge opening to the closed position, the link motion comprising parts 11 and 12 holding the door against the thrust of the ore while the cams remain in lace. p

Y on it is desired to' open the door, the cams 13 are withdrawn from the path or the links 12 by means of the shaft l land handle 16 thereon; when the outer ends of the links 12 revolve downwardly about'their pivots,

from the thrust of the door throu h thestruts 11 until the said links 12'str e the steps 17 which project hem and are attached to the sideyplates 6 at such a point below and in the path of the links 12 that when said links 12 are. resting on said stops 17 the outer ends of the struts 11, which are pivoted to the outer ends of links'12, will be so much lower than the door'pivots of struts 11' that said struts 11 will be .at such an angle with the door that the pressure of the is counterbalanced in a suitable manner, 'as

the door may weigh several hundred pounds when of large size and substantially. built, as is herein contemplated.

In Fig. 1, the door is shown closed. In Fig. 3, the door is shown raised or wide open, leaving the chute free fordischarge of ore or other materiaL, In Fig. 4:, the

door is shown lowered to the position where it begins to cut ofl? the flow of ore. The dogs 13 are set to stop the links'12' 'in the upper position, so that as the door goes down into the ore the struts 11 turn on the pivots which attach them to the ends of the links.

The door is pushed down by hand, the struts taking the thrust of the ore against the door almost entirely, and after the door gets below a certain position,the resultant of the thrust of the ore and the thrust of the struts "11 forces the door further downward and holds it down so long as the outer pivots oi. the struts and links are held in the upper position by means of the dogs 13.

In actual construction there will be con- 1 ditions at times when the stops 17 would probably be unnecessary, such as; should the ink motion be attached nearer to the bottom of the door, the bottom of the chute might serve as a stop; also when link 12 is considerably shorter than struts 11 the stop might not be necessary, but would however, be desirable to render the action steadier and more reliable; and it is understood that other changes in the details or proportions as may be desired by one skilled in the art,

can be made without departing from the in-- 5 in turn are pivoted to the ore discharge,

means for controlling the positions of the outer centers of said link motions by which the outer center may be heldvat a desired height to hold the door against the thrust of the ore when closing same, means for lowering the-outer center when desired, in order that the thrust of the ore may be utilized in combination with the link mdtion, to raise the door above the flow of ore, substantially as described.

2, The combination with anore receptacle and'chute having a discharge opening,'tl1e chute bein provided with vertical guideways, of'a oor havin its top provided with V pivots adapted-to'sli cm the guideways, a

pair "of struts pivoted to the lower lateral edges of the door and extending outward, a pa r ,oflmks-pivoted to the sides of the,

chute, th'eouter ends of the links and struts being also pivoted-together, and means for locking the outer 'ends'ofthe links against the thrust of the struts and the door, and

means for releasing the same, as described. g. 3. The combination with a chute havin a' discharge openin and vertical guides o a gate adapted to c ose said opening and pro vided with pivots adapted to slide in the guides, a air of struts pivoted to the door: and exten ing outwardly therefrom, a pair 501: links which are shorter than the struts a pair of cams adapted for engagementwithand pivoted to the sides of the chute, their outer ends being also pivoted to the struts,

- serve as stops when engaged with the links,

. of the oper'ator',as escribed.

1 14. The combination with an ore vthus locking the same against the thrust of the door or releasin the latter at the will bin having a discharge opening, of a door having a counterbalance and adapted to slide vertically and a link mechanism pivotall connected with the door and the latter a apted to move outwardly and upwardly when unlocked, means for keeping the outer center i of the link mechanism in the uppermost position. when it is desired to close the door and to lock the door in place when closed,

and means for locking and unlocking the link mechanism, as described.

5. The combination with a storage bin for ore, or other granular material, rovided with vertical .guideways and a discharge opening, of a door.ad'apted to close said lateral to slide in said guideways and having t e respective lower lateral edges pivoted to a pair of struts extending outwardly therefrom, means for fixing the osition of the outer ends of said struts during the closing of the door, and as long as it is desired to keep door closed, links pivoted to the sides of the chute and their outer ends pivoted to said struts; means for lowering the position of the outer pivots of said struts and links to release door substantially as described.

6. The combination with a storage bin for ore, or other granular material, rovided with vertical guidewa s and a discharge opening, of a door a apted to close said opening, said door having the to lateral edges provided with ivots adapte to slide 1n said guideways an having the respective lower lateral edges thereof 1voted to a pair of struts extendmg outwar ytherefrom and having their outer ends pivoted to links which are in turn pivoted to the front of the bin, means for holding the outer ends of the links against the thrust of the door, means for releasing same when desired together with means for stopping same at proper position when closing door.

7. A device of the class prising, in combination, a bin having an opening in one wall thereof, a closure for said opening adapted for compound movement in'a vertical and horizontal direction, a strut on said closure and means associated with said strut adapted to control the path of. travel of the free end thereof, substantially as described.

ROBERT B. PEARSON.

described, com- Gopiesot this patent may be obtained for five cents each, byuaddressing the "Commissioner of Patents,

Washington, D. G.

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