US634802A - Device for operating mine-shaft doors. - Google Patents

Description

- UNITED STATES PATENT OFFICE.

CHARLES C DWELL, OF ANAGONDA, COLORADO.

DEVICE FOR OPERATING MINE-SHAFT ooons.

. SPECIFICATION forming part of Letters Patent No. 634,802, dated October 10, 1899;

Application filed June 6,1899. Serial No. 719,582; (llomodehh I TO all whom it may concern: Be it known that I, CHARLES CALDWELL, a citizen of the United States, residing at Anaconda, in the county of Teller and State of Colorado, have invented new and useful Improvements in Devices for Operating Mine- Shaft Doors, of which the following is a specification. Y

My invention relates to mechanism for em tomatieally opening the doors of mine-shafts by the movements-of the cage. of the elevator.

The object of the invention is to provide an improved construction of the same which shall possess superior advantages with respect to elfieiency in use.

The invention consists in the novel construction and combination of parts hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a side elevation of the shaft of amine provided with myimprovements. Fig. 2 is a horizontal section on the line a: 50, Fig. 1. Fig. 3 is a side elevation of the rope-wheel, showing the adjustable weight carried thereby. Fig. at shows views in elevation and plan, respectively, of the oscillating rod which operates the cog and rope wheels and the top plate through which it passes. Fig. 5 is a perspective view of the oscillating rod, showing .the

'shoe' by which it is operated by the move ment of the elevator-cage. Fig. dis a detail In the said drawings thereferenee-numeral 1 designates the upright timbers of the. mine;

shaft,'and 2 the cross-timbers connected therewith.

a the brace-bars, and 5 the cable, whichmay be of any ordinary or suitable construction. The numeral'ti designates a vertical oscil lating rod, which passes through two-of the cross-timbers at each landing, one of which timbrs is providedwitha plate 7,-thr'oi1gh which said rodv also passes. The upper side of this plateis recessed around said'hole,

forminganoil-cup 8. At the under side of is a door or doors.

The numeral'3 designates an elevatoi' cage,

is oscillated or turned the rod is correspondingly oscillated by reason of the key and groove. Secured to said rod is a shoe 1?, which is adapted to be thrown into the path of a bar 13, secured to the brace-bars 4 at one side of the cage as the cage is lowered. Mounted upon said rod and held in place thereon by collars 1a is a rack-bar 15, which meshes with a cog-wheel 16, secured to or formed with the rope-wheel l7, journaled to the cross-timbers of the shaft. There is one of these wheels at each landing Where there The periphery of this wheel is grooved, and secured thereto is a rope 18,which passes around a pulley 19, carried by a bracket 19, and the other end is secured to the hinged door 20 of the landing. This door is provided with a spring or springs 21, of any suitable construction, for closing the door when the elevatorrcage is raised or elevated. The said rope-wheel is provided on the side opposite the cog-wheel witha radial rod 22, which carries an adjustable coun terbalance-weight for the purpose of returning saidwheel to normal position after it has been operated to open the door, as hereinafter described.

Thenumeral 24 designates vertical guide bars or beams which engage=with opposite guide-grooves 25 in the bottom of the said cage, and to these bars or beams are'pivoted levels 26; To the upper end of one of these levers is pivoteda rod 2'7, the other end of which is pivoted to the plate 9. Also pivoted to said levers at the upper and lower ends,respectively, are. outwardly-extending rods 28, the opposite ends of which are pivoted to chairs or steps 29, pivotallyconnected with the vertical timbers of the shaft and located in,re-.

are 'connectedtogether in pairs by horizontal .cesses 29 therein. -There are two of these chairs at opposite sides of theshaft, and they rods 30, so that asthe 'chairs onone side of the'shaft are operated by the leverandlconnections the others will move in unison therewith. The v numeral 31 designates a handlever pivoted to the bearing secured to the floor of the mine-drift and connected with one of the said chairs by a rod 82.

The numeral 34, Fig. '2, designates the beams'to which the floor of the elevator-cage is secured. Then it is desired to lower the elevator-cage to receive a car or for any other purpose, the operator at the landing at which it is desired the cage shall stop signals for the cage to descend and turns the lever 31, so that through its connections the chairs will be thrown inward, as seen in Fig. 1, and lie in the path of and serve as stops for the cage. At the same time the rod 6 will be given a one-quarter turn, so that the shoe carried thereby will lie in the path of the bar 13, carried by the brace-bars of the cage. the cage reaches the landing said bar will strike the shoe and depress the rod 6, and the rack-bar engaging with the cog-wheel of the rope-wheel will turn the latter and through the medium of the rope secured thereto will open the door. When the cage is elevated, the bar 13 will move away from the shoe l2, and the strain on the rope being relieved the springs connected with the door will close the same. At the same time the weight carried by the rope-wheel will turn the latter in a reverse direction and through the medium of the cog-wheel and rack-bar will elevate the rod 6. The lever 31 is then turned to throw the chairs outward into the recess 29 so as to be out of the path of the cage, and also to turn the plate 9,."rod 6, and shoe 12, so that the latter will be out of the path of the bar connected with the brace-rods of the cage. If it is desired to lower the cage to another level or landing after the door has been opened and closed, as above described, instead of proceeding immediately upward it can be readily done as the chairs and shoe are out of the paths of the cage and the bar 13, as will be readily understood.

While I have shown but one door employed in connection with a landing, it is obvious that two may be employed without departing from the principle of the invention, as such can be readily accomplished by a multiplication of ropes and pulleys, which will be obvious to anyone skilled in the art to which the invention pertains.

Having thus fully described my invention, what I claim is p g I 1. In a mine-elevator, the combination with the hinged spring-actuated door, of the os'cil lating rope-wheel, the rope connected therewith and with the door, the cog-wheel carried by said rope-wheel, the rack-bar engaging therewith and means for operating the same by the movement of the elevator-cage, substantially as described.

2. In a mine-elevator, the combination with the hinged spring-actuated door, the ropewheel, the rope connected therewith and with the door, and the cog-wheel carried by said wheel, of the vertically-movable rack-bar, the vertically-movable oscillating rod carrying the same, formed with a vertical groove, the shoe secured to said rod, the-plate formed with a hole and with a key engaging with said groove, the rod pivoted to said plate and meshing with said cog-wheel, the verticallymovable rod which carries said rack-bar formed with a vertical groove, the shoe fixed to said rod, the plate through which said rod passes provided with a key engaging with said groove, the rod connected therewith, the

lever with which said rod is connected and the hand-lever and connecting-rod for operating the same, substantially as described.

4. In a mine-elevator, the combination with the hinged spring-actuated door, the oscillating rope-wheel, the rope connected therewith and'with said door, and the cog-wheel carried by said rope-wheel, of the rack-bar meshing therewith, the vertical rod carrying said rack-bar and formed with a vertical groove, the shoe fixed to said rod, the plate through which said rod passes formed with a key engaging with said groove, the bar pivoted to said plate, the lever with which it is connected, the rods connected with said lever, the pivoted chairs with which said last-mentioned rods are connected, the hand-lever and connecting rod, substantially as dcscribed.

5. In a mine-elevator, the combination with the hinged spring-actuated door, the oscillat ing rope-wheel, the rope connected therewith and with said door, the radial arm and ad justable counterbalanced weight and the cogwheel connected with said rope-wheel, of the vertically-movable rack-bar and means for operating the same by the movement of the cage of the shaft, substantially as described.

(5. In a mine-elevator, the combination with the hinged spring-actuated door,.the oscillating rope-wheel, the rope connected therewith and with the door, the radial arm and adj ust= able counterbalanceweight,and the cog-wheel conected with said rope-wheel, of the rack bar, the vertically-movable, oscillating rod carrying said rack-bar formed with a vertical groove, the shoe fixed to said rod, the plate having a key engaging with said groove, and means for operating said plate, substantially as described.

7. In a mine-elevator, the combination with the hinged spring-actuated door, the oscillatin g rope-wheel, the rope connected therewith and with the said door, the radial arm, the adjustable weight, and the cog-wheel secured to said rope-wheel, of the rack-bar engaging therewith, the vertically-movable oscillating rod carrying said rack-bar formed with a vertical groove, the shoe fixed to' said red, the plate through which said rod passes provided with a key engaging with said groove, the rod connected therewith, the lever with which said rod is connected,-the outwardly-extending rods connected with said lever, the pivoted chairs with which said last-mentioned rods are connected, the hand-lever and the connecting-rod, substantially as described.

8. In a mine-elevator, the combination with the hinged spring-actuated door, the oscillating rope-wheel, the rope connected therewith and with said door, the radial arm, the counterbalance-weight carried thereby, and the cog-wheel secured to or formed with said ropewheel, of the rack-bar meshing therewith, the vertically-movable oscillating rod carrying said rack-bar formed with a vertical groove, the shoe fixed to said rod, the plate through which said rod passes provided with a key engaging with said groove, the rod connected

Images