US154977A - Improvement in self-closing hatchways - Google Patents

Improvement in self-closing hatchways Download PDF

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US154977A
US154977A US154977DA US154977A US 154977 A US154977 A US 154977A US 154977D A US154977D A US 154977DA US 154977 A US154977 A US 154977A
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doors
cage
levers
cab
self
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02Door or gate operation
    • B66B13/04Door or gate operation of swinging doors

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  • This invention has reference to that class of hatchways in which the doors at the diiferent floors of the building are opened and closed in an automatic manner through the medium of the ascending and descending cab or elevator-cage.
  • the invention consists in the arrangement, in respect to the hatchway-doors, of a system of levers, slotted arms, and connecting-rods, which are constructed and relatively arranged in such a manner above the hatchway-doors that the ascending cab or elevator-cage, after having opened the doors through the medium of inclined planes carried by the cage, will tend to retain the doors in an open position until the bottom of the cab has cleared the same, 'when the gradual closin g of the doors is insured by the arrangement of levers, arms, and rods.
  • the opening of the doors to permit the downward passage of the cab is accomplished by causing projecting plates or strips on the cab to come in contact with the levers arranged above the doors in.
  • Figure 1 is a side elevation of the hatchway-cage, frame, doors, and operating-levers.
  • Fig. 2 is a longitudinal vertical section of the same, and
  • Fig. 3 a top or plan view thereof.
  • A designates a hatchway of the usual construction, having at the corners diagonally opposite to each other tracks or guide-rails a, for the receptionof bifurcated guide-plates b, or wheels, at the corresponding corners of the cage B.
  • the cage or elevator-cab is provided at the corners not occupied by the guideplates, with. vertical strips or plates 0, which subserve the function hereinafter specified; and on the top the cage carries inclined planes or plates D, which come in contact with the under side of the doors H, when the cab is ascending, so as to bear against said doors, and to cause the same to be forced open by the upward progress of the cab.
  • the doors are hinged in the ordinary manner, and are, re spectively, connected at opposite sides thereof to a system of levers, E, slotted arms F, and connecting-rods G, which are brought into action to retain the doors in an open position until the cab has passed above the top edges of the same, when they serve to close the doors in a gradual manner, by causing the projecting corner-strips O to travel in contact with the levers E, which are inclined in an outward direction in respect to the path of the cage, so that the contact of the latter is eventually removed.
  • the levers E are hinged at their upper ends to the corner-posts of the hatchway, and at their lower free ends they are connected with the inner ends of the slot ends of the slotted arms F.
  • the levers E incline in an inward direction when the doors are closed, and the slotted arms 13 are retained in a horizontal position, while the rods Gr extend in an outward direction.
  • the act of opening the doors when the cab is descending is performed by causing the corher-strips O of the cage to come in contact with the lev'ers E, thus gradually forcing the same outward, and insuring a corresponding gradual opening movement of the doors through the medium of thelevers, slotted arms, and connectin g-rods.
  • the doors commence to move in a downward direction so soon as the cage has passed below the top edges of the same, and they gradually follow the movement of the same, so that, by the time the top of the arranged to operate in concert with each other cage has passed below the door-frame, the substantially as herein described.

Description

UNITED STATES- LINTON R. BARBOUR, 013 BOSTON, MASSACHUSETTS, ASSIGNOR TO JAMES PATENT j DFFIOE.
H. MGKAY'ANDBARNET WARNER, OF SAME PLACE.
.IMPROVEMENT IN SELF-CLOSING HATCHWAYS.
Specification forming part of Letters Patent No. 154,977, dated September 15, 1874; applicationfiled June 19, 1874.
To all whom it may. concern:
Be it known that I, LINTON It. BARBOUR, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Safety-Hatches, of which the following is a specification: I g
This invention has reference to that class of hatchways in which the doors at the diiferent floors of the building are opened and closed in an automatic manner through the medium of the ascending and descending cab or elevator-cage. The invention consists in the arrangement, in respect to the hatchway-doors, of a system of levers, slotted arms, and connecting-rods, which are constructed and relatively arranged in such a manner above the hatchway-doors that the ascending cab or elevator-cage, after having opened the doors through the medium of inclined planes carried by the cage, will tend to retain the doors in an open position until the bottom of the cab has cleared the same, 'when the gradual closin g of the doors is insured by the arrangement of levers, arms, and rods. The opening of the doors to permit the downward passage of the cab is accomplished by causing projecting plates or strips on the cab to come in contact with the levers arranged above the doors in.
the path of the cage, thus forcing said levers in an outward direction to cause the doors to be opened through the intervention of the slotted arms and connecting-rods, and retained A in an open position until the cage has'passed below the same, when they are gradually restored to a closed position.
Inthe accompanying drawings, Figure 1 is a side elevation of the hatchway-cage, frame, doors, and operating-levers. Fig. 2 is a longitudinal vertical section of the same, and Fig. 3 a top or plan view thereof. I
A designates a hatchway of the usual construction, having at the corners diagonally opposite to each other tracks or guide-rails a, for the receptionof bifurcated guide-plates b, or wheels, at the corresponding corners of the cage B. The cage or elevator-cab is provided at the corners not occupied by the guideplates, with. vertical strips or plates 0, which subserve the function hereinafter specified; and on the top the cage carries inclined planes or plates D, which come in contact with the under side of the doors H, when the cab is ascending, so as to bear against said doors, and to cause the same to be forced open by the upward progress of the cab. The doors are hinged in the ordinary manner, and are, re spectively, connected at opposite sides thereof to a system of levers, E, slotted arms F, and connecting-rods G, which are brought into action to retain the doors in an open position until the cab has passed above the top edges of the same, when they serve to close the doors in a gradual manner, by causing the projecting corner-strips O to travel in contact with the levers E, which are inclined in an outward direction in respect to the path of the cage, so that the contact of the latter is eventually removed. The levers E are hinged at their upper ends to the corner-posts of the hatchway, and at their lower free ends they are connected with the inner ends of the slot ends of the slotted arms F. The levers E incline in an inward direction when the doors are closed, and the slotted arms 13 are retained in a horizontal position, while the rods Gr extend in an outward direction.
When the doors are opened by the ascending carriage or cab, the levers, arms, and rods are moved outward, so as to enable the doors to be opened to their full extent, and to permit the cab to ascend and act upon the bent levers for preventing a too sudden closing of the doors, which would take place if the levers and other devices were not present.
The act of opening the doors when the cab is descending is performed by causing the corher-strips O of the cage to come in contact with the lev'ers E, thus gradually forcing the same outward, and insuring a corresponding gradual opening movement of the doors through the medium of thelevers, slotted arms, and connectin g-rods. The doors commence to move in a downward direction so soon as the cage has passed below the top edges of the same, and they gradually follow the movement of the same, so that, by the time the top of the arranged to operate in concert with each other cage has passed below the door-frame, the substantially as herein described.
- doors will be in a closed position. a In testimony that I claim the foregoing I I claim as my inventionhave hereunto set my hand. In combination w1th the doors of a hatch- LINTON R. BARBOUR.
way, the opening and closing mechanism, consisting of the cage, the pivoted levers E, slot- Witnesses:
ted arms F, and connecting-rods G, the va- CHARLES A. RHODES, rious parts being constructed and relatively D. R. SANFORD.
US154977D Improvement in self-closing hatchways Expired - Lifetime US154977A (en)

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