US724472A - Hatchway-door. - Google Patents

Description

PATENTED APR. '7, 1903.

M. HEGBOM. HATGHWAY DOOR. APPLICATION FILED FEB. 15, 1901.. H0 MODgL, :I: SHEB;-SHBET 1 i E l 1/ it] .3 .L nl" Jul '5* a S7 I M M llllllmmV 'l L f fffljl I, I Zigiz ,JJ/ Y /eoea inl/612% ggg M.. f y d No. 724,472. PATENTED APR. '7, 1903.

M. HEGBOM.

HATGHWAY DOOR.

APPLICATION FILED FEB. 15| 1901.

N0 MODEL. I 2 SHEETS-SHEET 2.

W////l/l/y? lllmlliii Q HHH j Hwy I UNITED 'STATES MARSELIUS IIEGBOM,

PATENT OFFICE.

OF CHICAGO, ILLINOIS, ASSIGNOR TO 'FREDERICK VOSS, OF CHICAGO, ILLINOIS.

vHa'rcaimait-boort.

SPECIFICATION forming part of Letters Patent No. 724,472, dated April 7, 1903.

l Application filed February 1 5, 1901. Serial No. 47,421- (NO mOdel-l a citizen of the United States, and a residentl of Chicago, Cook county,Illinois,have invent-` ed certain new and useful Improvements in `Hatchway-Doors; 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 a part of this specification.

This invention relates to improvements in hatchway-doors, and more particularly to doors designed to be used in spaces where but a small amount of head-room can be secured.

The invention consists of the matters hereinafter described, and more fully pointed out and defined in the appended claims.

In the drawings, Figure 1 is a front elevation of a device embodying my invention, showing thedoor closed. Fig. 2 is a vertical section of the same. Fig. 3 is an enlarged detail,l partly in section, showing oneof the upper corners of the door and part of the track broken away. Fig. 4 is a fragmentary top plan view,partly Iin section. Fig. 5 is a detail, partly-in section, of one of the lower corners of the door.

As shown in said drawings, A indicates a door, preferably metallic and, as shown, constructed in one piece and designed to close .an aperture in a wall or partition of approximately the same length and breadth. On the inner side of said wall or partition, or that side on which the door is secured, are provided tracks B, which maybe constructed of any desired material, but as shown, .are constructed of channel-iron, the lower ends of which are rigidly secured to the floor and which extend upwardly to the top of the dooropening, from which point said tracks curve upwardly and inwardly, and the upper end portions thereof lie horizontally at a right angle with the plane of the door and in close proximity to the ceiling, as shown in Fig. 2. Said door fits closely against the wall, entirely closing the opening therein, and is provided on each of its lateral edges with brackets a, each provided with the horizontally-extending arm a', to which is rotatably secured a roller a2, which fits closely in one of said tracks, as shown in Figs. 3 and 4. Said rollers are provided at the bottom and top ofthe door 'on each side thereof, so that when the door is closed said track rigidly supports the same against inward pressure. At the lower corners of said door are the laterally-directed brackets 0.3, rigidly secured thereon, which extend, as shown, between the corresponding trackand the wall, as shown in Fig. 2.

C C indicate pulleys rotatively secured on the wall and over which are trained the chains or flexible connections c c, the lower ends of which are secured, respectively, to the brackets a3 a3 by means, as shown, of a hook. The other end of said flexible connection is provided with a counterweight of any desired form and materially lighter than the door. Said door maybe of an ypreferredconstruction. As shown, however, the same is constructed of sheet metal, which may be corrugated, if preferred, and bound upon its margin with angleiron, as shown in Figs. l and 2, the flanges of said angle-iron forming a continuous surface on which to secure the respective supporting parts. A strengthening cleat or stay a4 extends across the middle of the door,and a handle is provided centrally thereon, as indicated in Fig. 1. l

, The operation of my device is-as follows: The door when closed, as indicated in Fig. 1, being heavier than the two weights b b' will remain closed until an upward pressure is brought to bear thereon, whereupon the upper rollers lserve along the channel of the track and the top of the door swings inwardly,

as shown in dotted lines in Fig. 2. Inasmuch as the top of the door is now supported on'the i ISO same downwardly in the track and canse the upper end thereof to move toward the wall until the door is in the position shown in Fig. 1.

Obviously many details of construction may be varied without departing from the principle of my invention, and doors of any desired shape and tracks either of channel or of angle iron may be used, as preferred.

I claim as my invention- 1. The combination with a sheet-metal doo having metal reinforced edges, of a curved track located on eachside of the same, rollers on each side of the door at the top and bottom thereof which engage in said track whereby said door is adapted to slide upwardly in a position at an angle with its plane in its closed position. Y

2. In a device of the class described, the combination with va sheetmetal door, of an angle-bar rigidly se'cnrcdaround the margin thereof, rollers projecting laterally therefrom near the top and the bottom, a curved channeled track adapted to receive said rollers and rigidly secured with one end portion approximately parallel with the plane of the door-opening and the other end portion directed at approximately a right angle there with whereby said door is adapted to slide upwardly to a position at a right angle with its plane in its closed position, and gravityacting means acting to move said door to its open position. f

In witness whereof I have hereunto subA scribed my name in the presence of two subscribing witnesses.

' MARSELIUS HEGBOM In presence of C. W. HILLS, LOUIS J. DELsoN.

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