US1472645A - Gate - Google Patents

Description

' w. P. FOLEY ET AL GATE . Filed June '7, 1921 2 Sheets-Sheet 1 *INVENTOR.

A TTORNE Y.

Grit 30, 1923. I

w. P. FQLEY ET AL GATE Filed June '7, 1921 2 Sheets$heet 2 INVENTOR.

A TTORNEY.

Patented Get. 39, 1923.

, rinses Parser since.

WILLIAM r. FOLEY aim RALPH w. KNUPP, or SOMERSET, rn vnsrnvnnra.

GATE.-

Application filed June 7,

To all whom it mar concern I Be it known that we, WILLIAM P. FOLEY and RALPH W. KNUPP, citizens of the United States, residing at Somerset, in the county of Somerset and State of Pennsylvania, have invented certain new and: useful Improvements in Gates, of which the following is a specification.

This invention relates to automatic gate operating mechanisms and more particularly to that class of vertically operated gates operatively connected to an elevator or lift such as is used in mine hoist shafts or other elevator shafts.

The primary object of the invention is to provide an automatically operated gate or gates at the entrance to an elevator shaft so that the same must be brought to its closed position before the lift or cage can leave its landing point thus preventing the possibility of any one falling down the shaft when the cage or lift is not at the landing.

Another object of the invention is to provide a pneumatically operated, safety gate cooperating with a lift or cage in such manner that the open or closed position of the gate is at all times cont-rolled by the position of the cage with respect to a landing point.

A continued object of the invention resides in the construction of a simple, yet highly efficient pneumatically operated deivice for automatically raising or lowering a gate or gates, and one in which the relative position of the parts are so arranged as to permit of easy installation in any mine shaft at a minimum of expense and without considerable labor.

With these objects in view, the invention consists of the construction andnovel com bination and arrangement of parts hereinafter fully described, illustratedin the accompanying drawings and pointed out in the subject matter being claimed, it being understood that various changes in the form, proportion, size and minor details of construction may be resorted to without departing from the spirit and scope of the invention or sacrificing any of the advantages thereof.

With these objects in view and others which will be manifest andsuggested as the purpose and nature of my invention are ev a d he fo ow ng p i cation and 1921. Serial No. 475,846.

drawing wherein we have shown a practice, yet preferred embodiment thereof,

Figure 1 is a side elevation showing the cage in dotted lines and the operating mechanis'm for the gate. a

Fig. 2 is a detail sectional view of the air or steam ram for operating the gate.

Fig. 3 is a sectional view of the brake cylinder used in connection with the operating mechanism. 1

Figs. 3 and a are sectional views showing the control valve in its different posi-; tlOIlS.-

Figs. 5 and 6 are vertical sectional views of the same, and

Fig. 7 is a perspective of a trip disk for operating a spring pushed control valve.

Referring now to the drawings wherein like numerals designate corresponding parts throughout the several views, 5 designates the vertically slidable gate which is provided at its top and bottom with extended eyes 6, 7, arranged toact as guides for the said gate operable between the verticalside guide rods 8 9, extendingfrom the flooring to a suitable beam, for instance, as clearly shown by Fig.1. The gate, of course, constitutes the closure for the cage or lift 10 shown in dotted lines, operable in the shaft by means of the hoist rope 11 connected to the hoisting drum 12 of the structure.

A gate elevating element, in the form of a cable or rope 13, is connected as at 1 1, to the top of the gate 5, and which passes over a pair of pulleys 15, 16', arranged on'thetop of a beam 17. The element 13, depends from the pulley 16, and is secured as at 13, to the outer end of a piston rod 17,tl1elatter having its inner end provided with a piston 18, operable within a vertically disposed cylinder 19, which is offset somewhat with respect to the guide rod 8, 9, and is formed at its upper end with a tubular inlet and exhaust, as indicated at 19 and at its lower end with a combined inlet and exhaust, as indicated at 19".

Arranged within the cylinder 19, at the bottom thereof, is a coiled spring 20, which.

acts as a cushion for the piston 1.8, when the I 1 arenas and shaft 37-, so that the rotary movement of the disk will not exceedone complete revolution for the travel of the cage from one landingto another, and by this arrangement when the cage 10, reaches a landing,

that the controlling valve mechanism is so positioned that the pressure is exhausted through pipes 3a and 20, and when the elevator or lift reaches the landing and pressure is supplied to the pipe 20 through the operation ofthe' valve mechanism, pres sure will also be supplied to the cylinder 33, causing the operation ofthe piston 32, andthe, brake l2 and in this connection exhaust is had from thecylinder 33, through the pipes 35 and 23, and by this arrangement the application of brake 12 is had on the drum, until it is time for the elevator or lift to leave the landing, but before the application of the brake is removed, controlling'valve mechanism is operated, so as to supply pressure to the cylinder 33,

through the pipes 23 and 35, and this also causes the supply of pressure to the cylinder 19, below the piston 18, at the same time an exhaust of pressure is had through the pipes 20 and 34, and on the supply of pressure in the manner as stated the brake 12 is released and the piston 18 moved upwardly and the gate 5 will move to closed position by gravity.

When the valve 21, is shifted to the position shown in Figure 3 a supply of pressure is bad to the pipes 20 and 34, and exhaust is had through the pipes 23 and 35, and when th valve mechanism is shifted to the position in Figure 4, a supply of pressure is had to the pipes 23 and 35, and exhaust through the pipes 20 and 34. The valve 22, is always closed unless it is released lug 42.

If the cage is positioned intermediate a pair of landings, the brake 12 can be applied without in any manner effecting the position of the gate 5, due to the fact that the valve 22. is closed.

In the accompanying drawings, we have illustrated our invention embodied in one form by way of example, and which in practice has been. found to be highly satisof-the invention; It is furthermore understood that the invention is not necessarlly limited or restricted to the precise elements shown except insofar as such limitations are specified in the subject matter being claimed.

Having shown and described our invention, what we claim as new and desire to secure by Letters Patent of the U. S; is

1 A device for the purpose set forth comprising an' elevator shaft gate lifting member normally in inoperative position and shifted to such position by the weight of the gate, a cylinder provided with a pressure operated piston connected to said member, conducting pipes opening into said cylinder above and below said piston and each providing for supply and exhaust, a releasable valvular element mounted in one of said pipes for arresting the operation of'said piston when the elevator is between landings to prevent the. shifting ,of said member from inoperative position, a valve mechanism for controlling supply and exhaust through said pipes, and means operated from the hoisting mechanism of the elevator when the latter reaches the landing for releasing said valvular element whereby on the operation of said valve mechanism to one position said piston will be shifted to move said member to operative position.

2. A device for the purpose set forth comprising an elevator shaft gate lifting member normally in inoperative position and shifted to such position by the weight of the gate, a cylinder provided with a pressure operated piston connected to said member, conducting pipes opening intosaid cylinder above and below said piston and each pro viding for supply and exhaust, a releasable valvular element mounted in one of said pipes for arresting the operation of said piston when the elevator is between landings to prevent the shifting of said member from inoperative position, a valve mechanism for cont-rolling supply and exhaust through said pipes, means operated from the hoisting mechanism of the elevator when the latthrough the medium of the disk 41, and tel reaches the landmg for releasmg Sald valvular element whereby on the operation ofsaid valve mechanism to one position said piston will be shifted to move said member to operative position, a brake element associated with said mechanism and applied thereto simultaneously with the shifting of said member to operative position, a fluid pressure operated means communicating with said pipe and connected to said brake element for operating the latter when said member is shifted to operative position, and means for releasing said brake element simultaneously with the shifting of said member to inoperative position by the gate.

3. A device for the purpose set forth comprising an elevator shaft gate lifting member normally in inoperative position and inoperative position, a valvemechanism for controlling supply and exhaust through said pipes, means operated from the hoisting mechanism of the elevator when the latter reaches the landing for releasing said valvular element whereby on the operation of said valve mechanism to one position'said piston will be shifted to move said member to operative position, and means for cushioning the movement of the piston when said member is shifted to operative position.

4. A device for the purpose set forth comprising an elevator shaft gate lifting member normally in inoperative position and shifted to such position by the weight of the gate, a cylinder provided with a pressure operated piston connected to said member, conducting pipes opening into said cylinder above and below said piston and each providing for supply and exhaust, a releasable 4: 1 ime i5 larelement whereby on the operation of said valve mechanismtoone position said piston will be shifted to move said member to operative position, a brake element associated with said mechanism and applied thereto simultaneously with the shifting of said member to operative position, a fluid pressure operated means communicating with said pipe and connected to said brake element for operating the latter when said member is shifted to operative position, means for releasing said brake element simultaneously with the shifting of said member to inoperative position by the gate, and means for cushioning the movement of the piston when said member is shifted to operativeposition.

In testimony whereof, we affix our signatures hereto.

WILLIAM P. FOLEY. RALPH W. KNUPP.

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