US1203364A - Apparatus for operating elevator-doors. - Google Patents

Description

JINZABURO KURIMOTO, OF SEATTLE, WASHINGTON.

APPARATUS FOR OPERATING ELEVATOR-DOORS.

Specification of Letters Patent.

Patented Oct. 31, 1916.

Application filed June 9, 1916. Serial No. 102,760.

To all whom it may concern:

Be it known that I, J INZABURO KumMo'ro, a subject of the Emperor of Japan, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Apparatus for Operating Elevator-Doors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to folding doors, and particularly to apparatus for moving the doors in an elevator shaft when the car is level with the floor at that landing.

The objects ofthe invention are to provide means on the car capable of being thrown into connection with the door-actuating means at the landing, when the car floor comes opposite thereto, so that the door will be opened mechanically and then closed mechanically unless the operating means is thrown out of engagement with the actuating means.

Another object is to provide means for automatically disengaging the actuator from the door when the latter closes against its jamb.

Still another object is to provide a clutch between the driving mechanism and the actuating means, and a control lever for such clutch within the car.

These and other objects are more fully shown by the accompanying drawings and description.

Figure 1 is an elevation showing the operating means and doors. Fig. 2 is a fragmentary elevation of a modified base for more than two doors. Fig. 3 is a section through the car floor showing the motor, ad-

justment lever, and drive shaft of the clutch mechanism. Fig. 4: is a detail of part of the chain and guide pin enlarged' Fig; 5 is a sectional view of the releasing plate and guide pin enlarged.

Like figures in like parts of the device.

As is well known, "many accidents, frequently causing death and injuries to persons, occur by reason of persons falling down elevator shafts through doorways or entrances to the shafts for the elevator cars, left open by. outsiders; and other injuries sometimes fatal'occur by reason of persons falling intoor from the elevator cars when the cars are allowed to stop with the floors the difierent views show other four figures.

, Numerals l, 2 and 2 show thedoors of the elevator shaft which when closed form part of the wall of the shaft, butwhen opened by being slid sidewise leave open space for passengers etc. to enter the car within the shaft. These doors slide one over the other in the commonly well known method of construction. 3 and L represent the outside frame of door 1, although the door may be made solidly as one part.

5 is the door post or jambagainst which the edge of the door is closed, 6 is the base of the door 1 which extends below the floor line 8, and 8 represents the thickness of the floor or partition between the floor line and ceiling of space below.

7 is a slot cut into the base 6 of door 1, V

on the end of the drive shaft 27 of a common electric motor 19, shaft 27 being square from its extension beyond the journal 19, in order to cause the sleeve 25 and clutch member 20 to revolve as otheshaft 27 is caused to revolve by the motor, the sleeve 25 however being slidably placed over and moved longitudinally upon the shaft by the end 24 of lever 23 which is pivoted on pin 2 F and operated by the handle 24 as determined by the person in the car. The point 24* is placed within a grooved wheel 22 fixed to the sleeve 25.

The motor 19 may be fixed to the under side of the. floor 18" of the elevator car by screws 19 or'other simple means and frame 26 connected at 26 extends above the floor of the car and supports the lever by the pin 24*.

In the base portion 6 of door 1 at one end is a thickened'portion 6 into which is cut a U-shaped groove 12 with the ends of the U terminating or opening at the edge of the thick portion and its bend following the same are as that of the sprocket wheel 10 at or near the base of its teeth. One of the hinge joints of the chain 9 is coupled with a sleeve 30 through which is slidably fixed a pin 29 one end of which is provided with a head 13, and the other end terminates in a rounded knob 31. A spring 28 attached to the head 13 and sleeeve 30 holds the pin normally with its knob 31 extended to its limit.

In the lower arm of the U-shaped groove is a stop block 32 with a spring plate 17 which normally lies against the face of block 32; and through block 32 is hole 33into which is fitted slida'bly a bolt 17 normally projected by a spring 17 so as to have one end extended beyond the edge of the door; but when this extended end of the bolt is pressed into the hole 33 the other end is projected against the down-turned end of the spring plate 17 whereby the same is raised and forms a sloping bed or continuation of the bed of groove 12 over which the knob 31 of the pin 29 rides as the chain'is carried around by the sprocket wheels. The arrangement of the clutch members 20 and 21 is such that they will not meet or match except when the floor of the car and floor of the building are even.

.In operation, as the car is being used the motor is allowed to keep the shaft and clutch member 20 revolving, and as the car reaches a landing or floor the doors stand closed in the position shown in :Fig. 1, and the operator moves the lever until the member 20 binds against the other member 21 whereby the wheel 11 will be turned and the chain carried around in the direction of the arrow until the knob 31 of the pin enters the upper arm of the U and reaches the bend in the same. When not permitted by the chain to follow the groove, the pin carries the door toward the left until the right end 14 of the slot 7 reaches the pin 11 at which time the groove will be in a posit-ion with its bend conforming with the circle of the left hand edge of the sprocket 11, whereupon the knob 31 will travel along the groove 12 until it strikes plate l7 on block 32. The pin 29 will then drawthe door back or close it again until the protruding bolt 17 strikes the post 5 whereby the bolt will be driven into hole 33 and'against the plate 17 lifting the same until it forms a slope sufficient to allow the pin knob 31 to ride over the block 32 and continue on out of the groove and around the sprocket wheel 10 into the upper arm of the groove, and into position to again open the doors. It will thus be seen that so long as the clutches are in operation the doors will be continually opened and closed, but the operator simply moves the lever and disconnects the clutch when the door is opened and when the door is to be closed he moves the lever to again connect the clutch; the doors being incapable of being tampered with and left open by persons outside the elevator car.

In order to prevent the knob 31 striking a square shoulder as it travels into the upper arm of the groove and again into the lower arm from the slot 7, the lower faces of these approaches are beveled at 12 and 12 to provide slopes at such points over which the knob rises, as it does over the plate 17. Another slope may also be provided at 12 in the bed of the groove 12 at the point where the knob 31 binds against the wall of upper arm of the groove when it begins to open the door. In some cases it is desirable to have several doors to move and slide one a U-shaped groove whose arms terminate flush with its front edge, a pair of wheels,

a belt movable around them and having a pin adapted to enter said groove and to move around the bend thereof when the door is open and the groove registers with one side of the-rear wheel, and means for throwing the pin out of the groove when the door is closed; combined with a clutch member on said rear wheel, a motor on the elevator, a

clutch member constantly driven thereby, and means for moving this member into engagement with the first-named member at will.

2. An elevatorshaft, a sliding door therein having a U-shaped groove whose arms terminate flush with its front edge, front and rear wheels at each shaft landing, an

endless belt passing around them and having a pin adapted to enter said groove and to move around the bend thereof when the door is open and the groove registers with one s1de of the rear wheel, and means for throwing the pin out of the groove when the door is closed against its jamb; combined with a female clutch member on said rear wheel, a motor on the elevator, a male clutch member constantly rotated thereby,

' and manually operable mechanism for moving this member into or out of engagement 2 with the female member when the elevator stands opposite the landing. I

' 3. A sliding elevator shaft door having U-shaped groove whose arms terminate flush with its front edge, a block in the lower arm of the groove and having a hole through it, a spring-projected bolt in said hole adapted to be borne inward when the door closes against its jamb, and a plate on the block movable to an oblique position by the inward movement of said bolt; combined with inner and outer wheels, means for rotating one of said wheels from the elevator when it is opposite a landing, an endless belt moving around them, and a spring-projected pin in the belt adapted to travel in the bend of the groove when the door is opened and the bend of the groove registers with the rear side of the inner wheel and to travel up said plate when the door is closed and the plate is inclined.

4. A sliding elevator shaft door having a U-shaped groove whose arms terminate flush with its front edge, a block in the lower arm of the groove and having a hole through it, a spring-projected bolt in said hole adapted to be borne inward when the door closes against its jamb, and a plate on the block movable to an oblique position by the inward movement of said bolt; combined with inner and outer sprocket wheels carried by the landing, means for rotating one of said wheels from the elevator when it is opposite such landing, a chain belt moving around them, a pin slidably mounted through one of its pivots and having a knob at one end, and a spring tending to project said knob whereby its head engages the upper arm of Copies of this patent may be obtained. for

the groove to open the door, travels around the bend of the groove when the door is open, engages the lower arm of the groove and the plate thereinto close the door, and rides up said plate and moves out of the groove when the door is closed and the bolt inclines the plate, substantially as specified.

5. A sliding elevator shaft door, a base therefor having a horizontal slot, a thickened portion at the front end of the base having a U-shaped groove whose arms terminate flush with the front edge of the door and whose bend crosses the slot, at block in the lower arm of the groove, a'plate at the inner end of said block, and means for in clining the plate when the door is closed; combined with front and rear pins in the landing, the rearmost projecting through said slot, sprocket Wheels journaled thereon, means for rotating the rear sprocket wheel from the elevator when it is opposite the landing, a chain belt moving around said wheels, and a spring-projected pin in said belt having one end adapted to engage said groove to open and then to close the door, and thrown out of said groove by the plate when the door is closed, substantially as described.

In testimony whereof I aflix my signature.

JINZABURO KURIMOTO.

five cents each, by addressing the Commissioner of Patents,

- Washington, D. G.

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