US442310A - Hatchway-guard - Google Patents

Hatchway-guard Download PDF


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US442310A US442310DA US442310A US 442310 A US442310 A US 442310A US 442310D A US442310D A US 442310DA US 442310 A US442310 A US 442310A
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    • 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


(No Model.)
E. M. DYE.
No. 442,310.l Patented Deo. 9, 1890.
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SPECIFICATION forming part of Letters Patent No. 442,310, dated December 9, 1890.
Application iiled March 21, 1890. Serial No. 344,731. (No model.)
To all whom, t may concer/L.-
Be it known that I, EARL M. DYE, of lut falo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Hatchway-Guards; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form partof this specification, in which-- Figure l is a vertical sectional view through a portion of an elevator-hatchway, showing my improved devices for automatically operating the hatchway-doors, a portion of the elevator-car being also indicated in dotted lines and the door being closed, the car presumably ready to descend. Fig. 2 is a similar View of the parts, showing the door opened during the descent of the car. Fig. 3 is a detail view of a hatch-door and its hinge or journal bearings. Fig. 4 is a detail.
This invention is an improvement in devices for automatically operating the hatchway doors or covers of elevator-shafts at the different stories or iioors of the building in which the elevator is located; and it consists in hinged doors which close over the hatchway, in combination with a series of levers of peculiar construction and combination and weighted, which are engaged and operated by contact with devices on the elevator-car during the ascent and descent of the latter, so that the hatch-doors will be opened during the passage of the car, but immediately closed thereafter, all of which will be clearly understood from the following description and claims.
Referring lo the drawings by lettel', A desi gnates one of the guide-rails for the elevatorcar; c, the guide or catch-strip thereon; B, a hatchway, and C one et' the doors or covers thereof. This door lies at right angles to rail A, and can be turned up thereagainst, the rail being recessed on its inner face at c to accommodate the door, so that when raised the inner or lower face of the door lies flush with the face oi' the rail A. The door C is preferably formed of wood having its front and side edges bound by a metallic band E, and at its rear or hinged edge is secured a rod F.
D is a metal strip set into a transverse recess in the under face of the door, so that its outer face is flush with the face of the door, and its opposite ends are attached to the rod and frame. The ends of rod F project beyond the ends of the door and are journaled or secured in boxes G G, which have set-screws g g in their ends that impinge against the ends of rod F, and by adjusting which the door can be shifted or adjusted longitudinally to cause the strip D thereon to accurately register with the strip d when the door is raised. This strip serves a double purpose. It strengthens the doors and tends to hold them in perfect shape, and it also acts as a track for the friction or guide rollers on the elevatoncar to travel over.
II designates an angular bracket-arm secured to the rear edge of door C, opposite and connected to strip D and projecting rearwardly beyond the same and beside rail A, by depressing the rear end et which the door C will be swung upward and opened.
I designates a bell-crank lever pivoted at its bend on a pin or support J, attached to rail A above the recess c therein and at the side thereof facing arm H. On one end of this crank is a weight jadjustably secured thereon by a set-screw, by reason of which the other arm i of the crank is projected beyond the face of the rail A into the path of the elevator-car.
K designates a pitinan-red pivotally connected at its opposite ends to the ends of arms H and y2', as shown, se that by rocking the bell-crank lever a reciprocating motion is imparted to pitman K, and the door C will be caused to open or close. The weight j always tends to force arm 'L'. of lever I upward to a horizontal position, thereby through the connections closing the door C, and when the arm i is depressed weight j is swung upward and arm II is rocked downward, causing the door C to swing open.
In order to counterbalance the weight of the door, I weight the end of arm II or lower end of pitman K, as indicated at 71:, so that, considering the door and arm H as a unity, they are balanced on rod F, thereby enabling the door to be operated with facility upon the rocking of lever I.
L indicates thc car of ordinary construc- TOO tion and having usual appliances to coact with strip a to guide it in its vertical movements. On the bottom of this car are mounted in proper hangers friction-rollers M m, in such position that when the car descends they will impinge against the arm 11 of lever I, if it be not lowered. Roller m projects slightly beyond the edge of the car, and roller M is set back in such position that it will strike the end of arm z' when the latter is about horizontal, and ,as the car descends it will force arm i down sufciently to cause door C, through the connections described, to open before the car-bottom passes the upper end ofleccss c, and when roller M disenga-ges the arm e' roller m engages the same and thereby keeps the door C open until the car has passed below the edge of the open door and is guided by strip D, by which means thev door is kept open until the car has descended through the hatchway. The weight j, however, will cause the immediate closing of the door upon the descent of the car, and in order to prevent slamming of the door or too hasty closing thereof a curved guard N is attached to the roof of the car in position to engage the face of the strip D and lower the door gradually as the car descends. This curved strip when the car ascends engages the strip D and raises and swings the door C upward until the rollers or guide appliances on the body of the car have come into engagement with strip D, this upward lifting of the door through arm Il and pitman F pulling arm z' downward out ot the way, and as the car rises out ofengagement with piece D the roller m again comes into engagement with arm i and prevents the same being swung outward into engagement with the side of the car, but allowing it to gradually swing upward as the car rises, thus insuring the gradual closing of the door C as the car ascends.
In practical use the lever, cranks, and doors are duplicated for each hatchway, such arrangement being obvious and the operation of the parts in the duplicate devices being as described.
Having described my invention, what I claim as new, and desire to secure by Letters Patent, is
l. The combination ot` the door, the rearwardly-projecting arm H, attached to the rear edge thereof, the bell-crank lever I above the door, having a rearwardly-projecting weight.- ed arm and a forwardly-extending arm 1, projecting into the path of the car, and the pitinan K, connected to arm i and arm II, with the car, having the rollers on the bottom thereof adapted to engage arm i and the guards on top of the car, all substantially as specified.
2. The combinatian of the rail A, having guide-strip d and recess c, with the door C, having a guide-piece D and a longitudinallyadjustable hinge-rod F, and the j ou rn al-boxes G G, provided with screws g g, substantially as described.
3. The combination of the guide-rail A, having a recess c, the hatch-door C, adapted to be swung up and rest partly in said recess, and provided with a transverse guidestrip D and a rearwardly-projecting arm H, the bell-crank lever I, having an arm i, projecting in the path of the car, the ptman connecting arm 1' with arm H, the weight adj ustably secured on the other arm of lever I, and the counterbalancing-Weight la, with the car, the guard N on top thereof, and the friction-rollers M m on the bottom thereof, substantiallynas and for the purpose specified.
In testimony that I claim the foregoing as my own I aiiix my signature in presence of two witnesses.
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