US1225773A - Automatic safety elevator-gate. - Google Patents

Description

J. H. COLE.

AUTOMATIC SAFETY ELEVATOR GATE.

APPLICATION FILED MAILZS, I9I6.

Patented May 15, 1917.

2 SHEETSSHEET I.

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1. H. COLE.

AUTOMATIC SAFETY ELEVATOR GATE.

APPLICATION FILED MAR. 29, I916.

Patented May 15, 1917.

2 SHEETSSHEET 2.

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JAY HARDING COLE, OF BINGHAMTON, NEN YORK.

AUTOMATIC SAFETY ELEVATOR-GATE.

Specification of Letters Patent.

Patented May 15, 1917.

Application filed March 29, 1916. Serial No. 87,547.

To all whom it may concern:

Be it known that I, JAY HARDING COLE, a cltizen of the United States, residing at Binghamton, in the county of Broome and State of New York, have invented certain new and useful Improvements in Automatic Safety Elevator-Gates; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention is a novel improvement in elevator gate operating devices, and its object is to provide novel means whereby the gate at any floor may be operated automatically, at the will of the operator; but if it is not desired to have such gate open it will remain closed during the passage of the car past such floor; but the operator by simply pulling a rope or other device can set automatically in operation the means for opening the elevator gate at the desired floor. Means are provided whereby the gate may be quickly opened as the car nears the proper position at the floor where the gate is to be opened; and whereby such gate can be quickly closed just after the car starts away from said floor.

T he invention is particularly adapted for use with freight elevators; but can be readily adapted for use with various kinds of elevators and furnishes eifective protection against improper opening of the gates; and requires no physical exertion on the part of the operator in opening or closing a gate while at the floor.

I will explain the invention as adapted for use in connection with gates of freight elevators, but the invention is not restricted to any particular form of gate, or kind of elevator, as, when once understood, its applicability to various kinds of elevators will be readily appreciated by those skilled in the art.

The accompanying drawings illustrate one embodiment of the invention, and I will describe the invention with reference thereto, and summarize in the appended claims the novel features and combinations of parts for which protection is desired.

In said drawings:

Figure 1 is a front elevation of part of an elevator shaft showing a freight elevator, gates, and gate operating mechanism; the elevator supposed to be ascending, and the trip on second floor being shown-in operative position for engagement with co-acting devices on the car, and the trip on the lower floor being shown in inoperative position.

Fig. 2 is an enlarged detail view showing a gate opened, the car in position at the floor, and the trip justin position to be disengaged on the further upward movement of the car.

Fig. 3 is a detail sectional view showing the parts in the position shown in Fig. 1 in full lines.

Fig. a is a reverse view of Fig. 3.

Fig. 5 is a detail sectional view of the trip controlling devices.

Fig. (3 is a detail.

Referring to the drawings, the car 1 is shown as of the ordinary freight elevator type, and has side standards 1 guided by upriglnis 2 at the sides of the elevator shaft in the usual manner. At each of the floors the openings in the shaft may be provided with suitable doors or gates; the gates are shown as vertically movable and made in two sections. As shown the lowermost section 8 of the gate is adapted to slide in suitable grooves 8 in uprights at the sides of the shaft opening, and the upper section 3 is adapted to slide in suitable guides 3 in said uprights.

Ropes or cables 3 are connected to opposite ends of the lower section 3 and run over suitable guide sheaves or pulleys 3 and are attached to a large grooved wheel or drum t rotatably mounted on a stud P", attached to a support at the side of the shaft, and preferably above the gate. By properly turning this drum 4; the ropes 3 are wound up thereon and consequently the gates 3 lifted. .Preferably gate section 3 rises beside the gate section 3 and the upper bar of section 3 engages pins or stops 3 on the upper bar of the section 3 and picks the latter section up so that both of them rise together. By usingtwo sections the gates can be readily operated in low ceiling rooms; but it is not necessary to employ two sections unless it is desired to make a very high barrier in front of the shaft opening.

Attached to one face of the drum l is a small drum P around which is wrapped a cable or chain 45 which passes over guide pulleys at to and between upper and lower pulleys 4t (mounted in a slot in a guard plate 2 attached to the side of the adjacent upright 2) and connected to a movable and laterally swingable member 5 which is preferably slidably andswingably mounted on a vertically disposed rod 5"-, securely attached to the said upright. The cable 4 is of such length that when the gate is closed the said member 5 stands about centrally of the rod, and if this member be either raised or lowered it will pull the cable 4? and cause drums l and e to rotate, and thus raise the gates, see Fig. 2; and when this slidable member 5 is released the gates will lower by gravity and will cause the said member to return to. its normal position.

Each member 5 normally projects outwardly toward the related gates and out of the way of the car, when in normal inoperative position (Fig. 1). hen it is desired. to operate the gate at any floor the related member 5 must be swung inward to the position shown in Figs. 2 and 3 so that a trip finger 5" on said member 5 will project into position to be engaged either by an upper abutment or catch member 1 or a lower abutment or catch member 1 attached to upright 1 or side of car and projecting thereform, (see Figs. 2-3). The upper catch 1 is adapted to engage the trip finger 5 when the car is ascending if said trip 5 is thrown in operative position; and the catch 1 is adapted to engage the trip finger 5 when the car is descending, if said trip be thrown into operative position.

The trip finger may be thrown into operative position when desired by the opera-.

tor on the car by means of a pull cord 6 of which there is one at each floor; each pull cord extends from a point near the bottom of the floor up to and over a pulley 6 and 6 near the ceiling, and then down beside upright 2 to and between upper and lower pulleys 6 mounted in the guard-plate 2 beside the pulleys t and is attached to the member 5 at the side thereof opposite the attachment of cable 4 thereto. When the cord 6 is pulled it will swing the member 5 from its inoperative position, as shown in Figs. 3 and L, to its operative position as shown in Figs. 2 and 5; in which position the trip finger 5 will be in position to be engaged by either catch 1 or 1 on the car. When swung into this operative position the trip finger 5 may be retained therein by any suitable means, such as a spring catch 5 attached to the member 5 and adapted to engage a catch plate 5 attached to the adjacent side of the upright- 2, see Figs. 2, 3 and 5; so that when properly turned the member 5 is retained in position to have trip 5 engage catch fingers 1 or 1 and when so engaged the trip will be moved vertically on rod 5 and in such movement disengage catch 5 from the retainer 5.

If the car is ascending and the proper member 5 is shifted to the position shown in Fig. 3 its finger 5" will be engaged by the upper catch 1 and held thereby as the car ascends. The catch 1 is so located on the car that it engages the trip 5 before the car comes to position at the floor where the gates are to be opened, and as the car ascends to position the member 5 is carried up and through the cable t and connections causes the gate to fully open by the time the car has come to position at the floor where the car is to stop and the gates be opened. If the car should next descend, instead of ascending, the member 5 would lower with the car and the gates would close quickly by gravity.

If the car should ascend. the trip finger 5 will be automatically disengaged from the catch 1 by means of a suitably located cam plate 7 attached to the upright 2 in such position that as the car again starts upward the trip finger 5, which remains in engagement with catch 1 and is upheld thereby, will come into contact with the said cam and the cam will force the trip finger out of engagement with the catch 1", and as soon as the trip finger is disengaged from the catch the gates will drop by their own weight and return member 5 to normal position.

If the car should be descending and the operator wants to open the gates at any floor, after he leaves the floor next above he pulls the rope 6 so as to throw the trip member 5 at the floor where he wants to open the gates into position to be engaged by the lower catch 1 as the car descends.

The catch 1 will thereupon engage the trip finger 5 and force the latter downward, in so doing it will through the connections cause the rotation of the related drums 4t, 45 and through them cause the gates to be raised at the desired floor just before the car comes into position at the floor where the stop is to be made; and the gates are held raised while the car is at such floor by reason of the catch 1 holding down the trip finger 5".

If the car should then re-ascend, :the

gates would close as their weight will cause Y the member 5 to move upwardly to its normal position; but if the car is going to descend member 5 will be drawn downward by the catch 1 and into engagement with a suitably located cam plate 7 which is so arranged as to force trip finger 5 out of engagement with catch 1 and as soon as it is disengaged the weight of the gates will through the connection return the member 5 to its normal neutral position.

A sliding member 5, the connected gateactuating devices, and a controlling cord 6, should be arranged at each floor; so that the operator can shift the proper member 5 at any point where he desires to stop. When the elevator is going up if he wishes to open a gate at a certain floor he would pull cord 6 at the floor at which he desires to stop before the car reaches such floor landing; or if the car is descending he would pull cord 6 of the proper floor just before the car reaches such floor landing. As only a short movement of the car is required to fully open the gates this can be very readily done. If a person at any floor wants to get on the car he can pull the cord 6 at the floor where he is standing and cause the gates to be raised as the car reaches such floor.

I have illustrated one practical means of carrying out the invention, and when understood others skilled in the art can readily embody the invention in various mechanical forms within the scope thereof, and I do not consider the invention restricted to the particular embodiment illustrated in the drawings.

lVhat I claim is:

1. In combination an elevator car and elevator gate; a slidable and laterally movable member adjacent the gate, a trip on said member, operative connections between said slidable member and the gate to operate the latter when the slidable member is moved vertically, means for swinging the said trip into position to be engaged by catches on the car, catches attached to the car adapted to engage the trip when in operative position, devices adapted to hold the trip in position to be engaged by the catches on the car, and means adjacent the path of the car adapted to cause the trip to disengage the catches on the car when the slidable member has made suflicient movement.

2. In combination with an elevator carand gate; a cable and drum for operating said gate, a slidable swingable member adjaceut the gate, a trip on said member, means whereby said slidable member operates the drum, means for swinging said slidable member into position to have the trip engaged by members on the car, members attached to the car adapted to engage the trip when in operative position and cause same to move with the car, devices adapted to hold the trip in position to be engaged by the members on the car, and means to cause the trip to disengage the members on the car, when the slidable member has made a sufiicient movement.

3. In combination with an elevator car and floor gate; of a slidable laterally swingable member adjacent the path of the elevator, means manually controllable by the operator on the car for shifting said swingable member into position to be engaged by a member on the car so that said swingable member will be shifted by the movement of the car, means connected with said swingable member for opening the gate when said slidable member is shifted by the car, and means for disengaging the slidable member to close the gate when the car moves beyond certain limits.

4. In combination with an elevator car and floor gate; a slidable swingable member adjacent the floor landing, means adapted to be operated by said swingable member for opening the gate at such floor, means manually operable by the operator on the car for throwing said swingable member into operative position, means on the car adapted to engage said swingable member when in operative position and actuate said member, and means for disengaging said swingable member from the car means after the gates are opened when the car moves beyond certain limits.

5. In combination with an elevator car and gate; of a vertically and laterally movable member mounted adjacent the path of the ele ator; means manually operable by the operator on the car for causing said member to be engaged by members on the car, means connected with said movable member for opening the gate when the member is actuated by the car, members on the car adapted to engage the movable member and move the same as the car moves, and means for automatically disengaging said movable member from the car member if the car moves beyond certain limits.

6. In combination an elevator car and elevator gate; a cable and drum for operating said gate, a slidable member adjacent the gate, a trip on said member, a cable connecting said slidable member with the drum to operate the latter when the slidable member is moved vertically, means manually operable by the operator on the car for moving the said trip into position to be engaged by a catch on the car, catchesattached to the car adapted to engage the trip when in operative position and cause same and the member to move with the car, and cam plates adapted to cause the trip to disengage the catches if the car moves beyond certain limits.

In testimony that I claim the foregoing as my own, I aflix my signature.

JAY HARDING COLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C.

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