US907454A - Elevator-door mechanism. - Google Patents

Description

J. BROMBAGHER.

ELEVATOR DOOB. MECHANISM.

APPLICATION FILED FEB. 4,1908.

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JULIUS BROMBAOHER, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO P. MARTIN DE OROUPE'I, OF LOS ANGELES, CALIFORNIA.

ELEVATOR-DOOR MECHANISM.

Specification of Letters Patent.

Patented Dec. 22, 1908.

Application filed February 14, 1908. Serial No. 415,988.

To all whom it may concern:

Be it known that I, JULIUs BROMBAOHER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Elevator-Door Mechanism, of which the following is a specification.

The main object of the present invention is to provide an elevator door with means for convenient operation thereof in opening and closing.

A further object of the invention is to pro vide means for such purpose which will ease off or relieve the jar in opening and closing the door.

Another object of the invention is to provide, in a double elevator door, convenient and simple means for simultaneous operation of the two doors.

In the accompanying drawings: Figure 1 is an elevation of a double elevator door embodying the invention. Fig. 2 is a horizontal section thereof on line 00 2 Fig. 1. Fig. 3 is a vertical section on line as -m Fig. 2. Fig. 4 is a vertical section on line m -ac Fig. 2. Fig. 5 is a vertical section on line m ac Fig. 2. Fig. 6 is an elevation of a single elevator door showing application of the invention thereto.

1 designates a portion of the framing of an elevator shaft and 2 a fixed anel or wall portion partly closing the sha t at one side, eaving an opening or doorway at that side.

3, 4 designate elevator doors which are adapted to move across said opening, being, i

for example, mounted on trucks 5 running on a rail 6, these doors being adapted to move alongside of the fixed panel 2 when in open position, for example, in front of said panel, that is, toward the side at which the operator stands. The doors 3 and 4 are operated by a lever 7 fulcrumed at 8 on a supporting member 9, said lever being connected by a link 10 with the door 4 and having an operating connection with the door 3 by a device 11 connected to the lever 7 and moving in a guide-way 14 formed on the door 3, the said guide way may be formed by a bar 12 attached to the door 3 by spacing blocks 13 and screws, the bar 12 extending parallel to the door and forming a guide way etween the bar and the door. The device 11 preferably consists of a spool or roller mounted to turn on a stud 15 attached to the link 10 and passing through the lever 7, this stud forming a pivotal connection for the link and the lever. A washer 16 extends between the spool 11 and the lever 7 and the outer end of the lever is bent over and down to extend in front of link 10 and is provided with a handle 17 for manual operation. The lower spacing block 13 is preferably covered with rubber or other yielding material 25 which acts as a buffer for the spool 11 at the end of its downward movement.

The member 9 on which the lever 7 is fulcrumed is yieldingly mounted so as to provide a floating or yielding fulcrum with elastic resistance to motion in either direction. Said member 9 is preferably in the form of a rocker arm and has a sleeve 22 mounted to turn on a stud 21 which stud is secured to a fixed support 20, the latter being attached to the panel 2. A coil spring 24 is secured at one end to the fixed support 20 and at the other end to the member 9 so as to normally hold said member in central position, but to allow it to yieldingly rock in either direction.

The operation is as follows :--Nhen the doors are closed, the lever 7 and the link 10 are extended horizontally, as shown in full lines in Fig. 1, so that the doors are locked against operation by direct push on the door. When the doors are to be opened the handle 17 is lifted turning the lever 7 upwardly and causing the member or roller 11 to run up in the guide way 14, thereby drawing the first door 3 to open position. At the same time, the lever 7 and the link 10 act as a toggle, and the opening of this toggle by the raising of lever 7 causes the outer end of the link 10 to be drawn inwardly, opening the second door 4. As the doors are fully opened the jar due to the stoppage of their motion is taken up by yielding fulcrum 8, the spring 24 allowing the member 9 to turn slightly under the pressure of such jar. "When the door is to be closed, the lever 7 is pushed down, straightening the toggle 7, 10 so as to close the outer door and causing the roller 11 to travel downwardly in guide 14 thereby closing the first door. As this operation is completed the jar is taken up by the yielding fulcrum, the member 9 turning slightly in the reverse direction.

It will be noted that with this construction a single yielding device takes up the jar, due to stoppage, of both doors and the number of parts is reduced to a minimum and an easy, smooth operation is iven to both doors.

In case only a singde door is used, the link 10 will be omitted as shown in Fig. 6, the connecting member or roller 11 being attached to lever 7 and said roller working up and down in guide way 14 to operate the door. The lever 7 is, in this case, also pivoted on a yielding fulcrum 8, 9, constructed as shown in Fig. 3.

The invention is described as applied to the landing doors of an elevator, but it will be understood that it can be applied to sliding doors of any kind and in any situation.

What I claim is 1. A door operating mechanism comprising, in combination with a plurality of doors and a fixed frame, a supporting member yieldingly mounted 011 the fixed frame, a lever pivoted to said supporting member, a link connecting said member with one of the doors, guide means on the other door, said lever provided with means engaging in said guide, means to operate the latter door and having its free end extended beyond said first means and adapted to engage with the link when the doors are closed.

2. A door operating mechanism com rising, in combination with a door and a ixed frame, a pivot on the frame, a spring pressed rocking member on the pivot, a lever connected to the rocking member, guide means on the door, and a shouldered stud on the lever for engaging said guide means to operate the door by the movement of the lever, said stud being adapted to have a link pivotally secured thereto at one end.

3. In a door operating mechanism, comrising, in combination with a door and a fixed frame, a supporting member yieldingly mounted on the fixed frame, guide means on the door, a lever pivoted to the yielding supporting member, a stud near the free end of the lever, a spool on the stud for engaging in said guide means to operate the door, the outer end of the stud being adapted to have a link pivotally secured thereto.

4. A door operating mechanism comprising, in combination with a plurality of doors, a fixed frame, a pivot thereon, a sleeved rocking member on the pivot, a lever connected to said member, a link connecting said lever with one of the doors, guide means on the other door, and means connected to said lever and engaging in said guide means to operate said other door.

5. In a door operating mechanism, a plurality of sliding doors, a vertical guide on one door, a frame, a lever having a pivotal connection at one end with theframe, means connected to the lever and sliding along the guideway to operate the door as the lever is swung, a link having a pivotal connection with the other door and having a pivotal connection with said means, the lower end of the guide being on a line with the two extreme pivotal connections to hold the lever and link in a horizontal position at right angles to the guide when the doors are shut.

In testimony whereof, I have hereunto set my hand at Los Angeles California this 7th day of February 1908.

GEORGE T. HAoKLEY, FRANK L. A. GRAHAM.

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