US1510600A - Car-operated mine door - Google Patents

Description

l 2 9 1 7 a O can OPERATED MINE noon \m w 1% w n h w m r t INVENTOR WITNESSES Patented ct. 7, 192

' JOHN HLMILLER, or PINEvILLE, KENTUCKY.

can-ornaacrnn MINE noon.

Application filed January 13, 1924. Serial BTW-637,292.

T 0 all whom it may concern:

Be it known that I, JOHN H. MILLER, a citizen of the United States, residing at Pineville, in the county of Bell and State of Kentucky, have invented new and useful Improvements in Car-Operated Mine Doors, of which the following is a specification.

This invention relates to door operating mechanism and has for its object the provision of means mounted along a mine track and engageable by a car traveling thereover whereby to automatically open the safety doors-commonly provided, the device having the great advantage of obviating all necessity for manual operation.

An important object is the provision of an apparatus of thi s' character including operating means engageable by the car wheels, other operating means being pro vided to insure action in the event of fail ure of the wheel operated means.

Yet another object is'the provision of a device of this character provided with means for automatically reclosing the doors after the car has passed through.

An, additional object is the provision of structure for this purpose which will be simple and inexpensive in manufacture, and installation, positive inaction, efficient'and durable in service and a ment in-the art.

With the above and other objects and advantagesin view the invention consists in the details of construction to be hereinafter more fully. described and claimed and illustrated in the accompanying drawings, in which:

Figure 1 is a plan view of the complete device, the doors being shown closed in full lines and open by dotted lines,

Figure 2 is a longitudinal section,

Figure 3 is a detail section onqthe line 3-3 of Figure 1,"

Figure 4 is a detail cross'section through one of the actuating members,

Figure 5 is a detail section on the line 5-5 of Figure 1, V 1 V Figure 6 is a'detail section on the line 6-6 of Figure 1,

Figure 7 is a detail'perspective view of one of the door carried brackets.

Figure 8 is a detail section on the line 8-8 of Figure 1.

Referring more particularly to the drawings the letter A designates a track including the usual ties B carrying the rails C.

general improve-.

The letter D indicatesthe bulkhead having a door opening adapted to be closed by 3 doors E which are hinged as shown at the side edges of the opening.

The invention consists in providing means for opening and closing these doors automatically, and in carrying it out, I pro vide' supports 10 stationarily mounted at opposite sides of the door way and having pivoted thereto, at 11, a sectional ramp 12 including sections Band 14:, hingedly connected as shown'at The sections 13 ascend while the sections 14 descend, and the free ends of the sections 14: are s'lid'able upon wea-rplates 16 which are formed with slots 17 for the passage of depending 18 carried by the sections. I 91 v 'Secured upon a tie at each side' of the door way is a plate 19 having pairs of, spaced cars 20 between which are pivoted arms 21 carriedby a rock shaft 22'which projects beyond one side of the track and which has'its projecting end equipped with a long arm 23 having a weight 24c'slidably adjustably mounted thereon. On the underside of each ramp section 13 is a forked element 25' within which is pivoted at 26 a depending'linlc 27 pivotally connected at 28v with. an arm 29 projecting from the rock. shaft 22 so that when the ramp is depressed by passage of the car along the track, the effect will be to rock the shaft 22.

Carried the hinged edge of each door is a curved bracket 30 having a forked end 31' within which is pivoted one end of a reachzrod'32 having a turn buckle 33 inter posed therein for adjusting purposes, Carried by each rock shaft 22 is an arm 34: pivoted at ,to an elongated yoke which has its bight portion formed with a hole. The reach rods 32 extend through these holes and along the yokes 36 and through cross members .37 in the-yokesi whichjconstitute guides. Within the. yokes,

' the ,rods 32 are encircled by coil springs ElSwhich bear against thebight portions of the yokes and'against adjusting nuts 39 threaded onto the rods;

The doors carry oppositely extending brackets 40 at the hinged edges thereof connected by a bridle bar 41 which insures simultaneous operation of the doors.

guides In the operation of the device up to this point, it will be seen that when a car approaches the door way from either side, the passage of the car over a ramp will cause depression thereof and consequent rocking of the shaft 22 as above described. dhen either shaft 22 is thus rocked, it is apparent that the arm 34 will swing away from the doors so that a pull will be applied. to the yoke 36. This pull is transmitted to the associated rod 32 and as this rod connected with the bracket 30 on a door, the result will be that the doors will he swung into open position as indicated by dotted lines in Figure 1 so that the car may pass through. The weights 24 operate to return the parts to normal position.

Attention is called to the fact that'the ramp sections are angular in cross section and that they are located immediately against the rails, the sections being formed with upstanding flanges 42 which project above the rails so as to be engaged by the treads of the wheels. This specific construction is preferred as it. obviates any necessity for providing an element on the car to engage the ramp.

To insure operation in the event of failure of the ramp'structure, I make use of an auxiliary operating mechanism. This feature involves the provision of upstanding posts 43 located at the opposite sides of the track at one side of the door way. Hinged upon these posts are bars 44 which normally ex tend in obstructing relation across the track and which are equipped with buffer rods or wear members 45 which will prevent damage when the bars are engaged by a car. It might also be mentioned n passing that the doors E are likewise equipped with similar buffer bars 46 for the same purpose.

The numeral 47 designates supporting sills which extend from the posts 43 to the bulkhead I), which sills form supports for levers 48 pivoted thereon as shown at 49. These levers are pivotally connected at one end with links 50 which are pivoted to brackets 51 on the bars 44. Pivoted at 52 on the sills are other levers 53 which are pivotally connected at one end with the adjacent lever 48 by means of links 54, and which have pivoted to their other ends reach rods 55 equipped with turn buckles 56 and connected with brackets 57 on the doors.

In case the track mechanism fails to operate, it is apparent that a car approaching the door-way from that side equipped with the bars 44, will strike against these bars and swing them outwardly as indicated by dotted lines in Figure 1. When this movement occurs, the link and lever mechanism will operate to swing the doors E into open position. Quite naturally, it will be seen that when the doors are opened by the ramp mechanism, the bars 44 will be swung even though they are not engaged. by the car.

From the foregoing description and a study of the drawings it will be apparent that I have thus provided a simply constructed and easily installed mechanism for automatically opening the safety doors upon the approach of a car from either direction so that it will be unnecessary for the operator of the car to open the doors manually. The mechanism really consists of comparatively few parts which may be of very rugged construction so as to withstand hard service without derangement.

While I have shown and described the preferred embodiment of my invention it is of course to be understood that I reserve the right to make such changes in the form, construction and arrangement of parts as will not depart from the spirit of the invention or the scope of the subjoined claims.

I claim:

1. Means for operating hingedlyimounted mine-doors along a track way, comprising rock shafts journaled across the track Way opposite sides of the door opening and carrying arms, sectional hingedly connected rampsextending along the track way and connected with said arms, said ramps being positioned for engagement by thewheels of a can passing along the track brackets on the hinged edges of the doors, means connecting the doors for effecting simultaneous operation, reach rods connected with said brackets, and other arms on the rock shafts connected with the reach rods, said last name-d connection consisting of yokes carried by the last named arms and through which the reach rods are slidable, and yield able tension means within the yokes.

2. Operating means for hinged safety mine-doors extending across atrack way, comprising supports along the track way at opposite sides thereof, horizontal bars pivoted on said supports and obstructing the track way for engagement by a car, levers pivoted on the supports and connected with said bars, other levers pivoted on the supports and connected with the first named levers, and reach rods pivotally connected with the second named levers and with the doors.

In testimony whereof I afliX my signature.

JOHN H.

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