US1299124A - Building-elevator. - Google Patents

Description

J. E. CARRUTHERS.

BUILDING ELEVATOR. APPLICATION F ILED FEB. I. 1919.

1,299,124. I Patented Apr. 1,1919.

3 SHEETS-SHEET I.

J. E. CARRUTHERS.

BUILDING ELEVATOR.

APPLICATION FILED FEB. 1. 1919.

Patented Apr. 1,1919.

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BUILDING ELEVATOR.

APPLICATION FILED FEB. I. 1919.

Patented Apr. 1,1919.

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JOI-INE. CARRUTHERS, OE AUBURN, MAINE, ASSIGNOR 0F ONE-HALF T0 WILLIAM A.

PAUL, OF AUBURN, MAINE.

BUILDING-ELEVATOR.

. Specification of Letters Patent.

' Patented Apr. 1, 191a.

, Application filed February 1, 1919. Serial No. 274,504.

To all whom it may concern Be it known that I, JOHN E. CARRUTHnRs,

State of Maine, have invented certain new and useful Improvements inBuilding-Elevators, of which the following is a specification. g

My invention relates to improvements in elevators and more particularly to freight elevators in buildings. Its objects, among others, are to provide means whereby the elevator in rising and falling opens automatically the tra doors at the floors of the building and the entrance gate or gates to the elevator.

In the accompanying drawings, Figure 1 is a side view with some parts broken away of an elevator well and elevator with my improvements applied thereto; Fig. 2 is a front view of the same with parts broken away and Fig. 3 is a horizontal sectional view taken on line ma2 Fig. 1. y

The same reference characters indicate like parts in the several figures.

In the drawings, the elevator is shown in r the position where the trap doors are open and the condition will be the same at any fioor whether the elevator be rising or falling. In said drawings, 1 is the elevator well, 2 the building frame. These may be of any convenient construction and arrangement. The elevator is adapted to be raised or lowered by power and in any convenient manner. As shown, the power is applied to a cable 3 passing over a pulley 4 on the building frame, the cable 3 being secured to the top of the elevator. The elevator consists of a platform 5 and supporting frame 6, the top of the framecomprising a rectangular band 7. To the bottom of the elevator are attached outwardly extending wedge-shaped door openers 8 and, at the top of the frame, are attached similar wedge-shaped door openers 9. In the floor between two rooms, are provided ways 10 in which are positioned horizontally movable trap doors 11 adapted, when brought together, to close the floor opening in the well. These doors on the adjacent edges and on each side are preferably provided with anti-friction rolls 12 positioned so that, when the elevator descends or ascends, the wedge-shaped door. openers 8 and 9' engage the anti-friction rolls 12 and force the doors apart to permit the elevator to pass from floor to floor.

In the elevatorwell frame on the entrance side are vertical grooved ways 13 in which is loosely mounted a vertically reciprocating gate 14. This gate may be of any convenient style and its vertical edges extend into and reciprocate in said grooved ways, the width of the gate being less than the space between the bottoms of the two grooves, thus running loosely in 'theways. The gate is raised by acable or belt connection 15 between it and the trap doors. This cable 15 passes over a pulley 16 at the top and attached to the top of the frame by a staple 17 or in any convenient way. The cable then'passes down preferably in the grooved ways 13 in which the vertical door reciprocates, thence rearwardly around a stationary truck 18, thence around a truck 19 attached to the inner door, thence back and attached to the edge of the other door at 20. It is noted that the two sides of the elevator door and well and operating mechanism are substantially duplicates. Thus, it will be seen that, when the wedge 8 or 9 forces the sliding doors apart, the action of the cable is to raise the vertical reciprocating door. Now, when the elevator passes above or below the floor, the weight of the reciprocating door is sufficient to return the trap doors together, thus, closing the trap opening in the well as soon as the elevator has passed in either direction. The

trap doors are mounted on trucks 22 which travel on a track 21. The reciprocating door is provided at the to with a buffer 23 mounted on rods 24 on the top of the frame and having coil springs 25 upon said rods between the buffer and the top of the door frame. The frame of the elevator and the frame of the well are provided with a tongue and groove structure 26 for guiding and steadying the movement of the elevator in the well.

- I claim:

1. In a device of the character described, an elevator well, a vertically movable gate, horizontally movable trap doors, a cable connecting said gate and doors and an elevator provided with wedge-shaped trap door openers.

2. In a device of the character described, anelevator well, a verticallymovable gate, horizontally movable trap doorsprovided;

with anti-friction rolls in their adjacent edges, a cable connecting said gate and doors and an elevator provided With Wedgeshaped door openers.

3. In a device of the characterdesci 'ibed, an elevator well, vertically grooved ways in the frame adjacent said well, a vertical gate free to move in said Ways, horizontally movable trap doors, cables connecting said gate and doors and an elevator provided with wedgeshaped trap door openers.

l. In a device of the character described, an elevator well, a vertically movable gate, horizontally movable trap doors provided with anti-friction rolls in their adjacent edges, a cable connecting said gate and doors and an elevator provided with Wedge-shaped trap door openers adapted to engage said antifriction rolls and open said doors, the

eight of the gate being sufficient to overcome the inertia of the trap doors and close them after the elevator has passed.

5. In a device of the character described,

an elevator Well, a vertically movable gate, horizontally movable trap doors, provided with anti-friction rolls in their adjacent passed.

6. In a device of the character described, an elevator well, a verticallymovable gate, horizontally movable trap doors, a cable connecting said gate and doors on each side, one end of the cable being attached to the gate, an antrfrictionroll carried by the remote trap door over which said cable travels and theother endof the cable attached to the other trap door whereby the rising or falling of the elevator raises the gate.

In testimony whereof I affix my signature.

JOHN E. GARRUTHERS.

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

Washington, D. G. v

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