US1085470A - Door. - Google Patents

Description

J. OBRIEN & A. A. LUEKE.

DOOR.

APPLICATION FILED DBO. 13, 1912.

Patented Jan. 27, 1914.

I HI IIIHIIIIIIHIIIIHHIlllllunw Adel @5196 OZriem OF LOUISVILLE, KENTUCKY, ASSIG-NORS, BY

MESNE ASSIGNMENTS, TO ALFRED ISENBERG, OF LOUISVILLE, KENTUCKY.

DOOR.

Specification of Letters Patent.

Patented J an. 27, 191a.

Appilcation filed December 13, 1912. Serial No. 736,627.

To all whom it may concern:

Be it known that we, JAMES OBRIEN and ADoLrH A. LU'EKE, citizens of the United States, residing at Louisville, in the county of Jelferson and State of Kentucky, have invented new and useful Improvements in Doors, of which the following is a speclfication.

This invention relates to improvements in doors such as are commonly employed in elevators, freight cars, buildings, ships and other structures and has particular application to that type of door employing a number of sections slidalole one upon the other to open and close the doorway which the door controls.

In carrying out the present invention, it is our purpose to provide a door of the class described wherein in the sliding movement of the first section to open and closed positions, such section will travel at a speed greater than that of the adjacent section so that a uniformity of movement will be brought about between the sections constituting the door when the sections are operated to open and closed positions and wherein the sections may be operated quickly and with ease and facility.

It is also our purpose to provide a looking means through the medium of which the closing position, the locking means being constructed in such manner as to operate antomatically and lock the door in closed position immediately succeeding the movement of the sections of the door to such position.

Furthermore, we aim to provide a mecha nism by means of which the sliding sections of the door may be operated at the relative speeds aforesaid and which will embrace the desired features of simplicity, efliciency, durability and strength coupled with cheapness of cost in manufacture and which may be applied to any type of sectional sliding door in use.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim.

In the accompanying drawing; Figure 1 is a rear elevation of a sectional door equipped with the present invention. Fig. 2 is a horizontal sectional view on the line the section 5 to open the purpose a bar or lever vtremity fulcrumed or sections of the door may be locked in door length a guide 9 22 of Fig. 1, and Fig. 3 is a detail view of the locking mechanism.

Referring now to the accompanying drawmg in detail, the numerals 1, 1 designate the door jambs of the frame of the door opening, while 2 indicates the door as an entirety composed, in the present instance, of sections 3, 4 and 5, the sections 3 and 4 being adapted to slide one upon the other and upon the section 5, while the latter is connected by means of hinges 6 to one of the jambs 1 so that, when the occasion arises, the door may be swung to an open position to leave the door opening unobstructed.

In the ordinary use of the door, the section 3 is slid upon the section at and the latter together with the first section slid upon doorway and moved in a reverse direction to close the doorway. In accordance with the present invention, we employ a mechanism whereby the first section may, in the movement of the door to to open and closed positions, slide upon the second or adjacent section at a speed greater than that of the second. section in sliding upon the last or stationary section of the door. In the present instance, we employ for this 7 having one expivoted upon a pin 8 fastened in any suitable manner to the hinged edge of the section 5 of the door, adjacent to the lower end of such edge. The section 4 of the door has connected in any suitable manner at the rear edge thereof at a point approximately cent-rally of its designed to receive a pin 10 carried by the bar or lever 7 and extending outwardly of one side thereof, while the rear edge of the section 3 of the door adjacent to the upper end thereof has appropriately connected thereto a guide 11 designed to receive a pin 12 fastened to the free end of the lever or bar 7 and extending outwardly of the side of the bar opposite from the pin 10. By arranging the pins to extend in relatively opposite directions, the lever, when connected with the respective sections of the door, is disposed in an out of the way position and nicely fitted or disposed in operated position. By connecting the guide 11 to the rear edge of the section 3 or first section of the door adjacent to the top of such section and the guide 9 to the rear edge of the second or adjacent section at a point approximately centrally of the height of such section, the first section of the door in its movement to open and closed positions travels at a speed approximately twice as great as that of the adjacent or second section of the door, owing to the fact that the radius or distance from the pivot point of the lever to the second section of the door is in direct proportion to the radius from the center of the second section to the top edge of the first section. Thus, when the section 3 of the door is actuated to slide to an open position, such section travels at a speed greater than that of the second section, while when the sections of the door are moved to closed position, the first section travels at a relatively great speed as compared with that of the second section.

In order to lock the sections of the door in closed position and to bring about such looking action-automatically, suitable locking means is employed. In this case, a lever 13 is pivoted at a point between its ends upon a pin 14: carried by the guide 11 adjacentto the top edge of the first section of the door. One end of the lever 13 has the upper edge thereof rounded as at 15 and is normally held in the path of movement of the adjacent part of the lever or bar 7 by means of a suitable form of spring 16 carried by the guide, while the opposite end of such lever 13 is equipped with a weight or the like 17 which acts to hold the lever normally in a horizontal position. Thus, when the operator wishes to open the door, that is slide the sections relatively to one another to clear the doorway, the weighted end of the lever 13 is depressed whereby the locking end thereof is moved out of the path of movement of the bar or lever 7 so that the latter may operate as aforesaid, the spring 16 restoring the locking lever to normal position upon such lever being released by the operator. In the movement of the sections of the door to closed position, the lower edge of the bar or lever 7 engages the rounded edge 15 of the locking lever 13 and so swings the latter about the pivot pin 1e so that the bar or lever 7 may assume its proper position. WVhen the rounded end of the locking lever is relieved of the influence of the bar, such lever is restored to locking position by means of the'weight 17 and prevents accidental sliding of the door sections.

WVhile we have herein shown and described one preferred form of our invention by way of illustration, we wish it to be understood that we do not limit or confine ourselves to the precise details of construction herein described and delineated as modification and variation may be made within the scope of the claim and without departing from the spirit of the invention.

WVe claim:

The combination with a door comprising a number of sections adapted to slide one upon the other, of a lever movable about a fixed fulcrum, connections between said lever-and sliding sections at relatively different points first section will move at a greater speed than the adjacent section, a locking lever pivoted to said first section adjacent to one end and adapted for swinging movement in a vertical plane and normally resting in a horizontal plane and having the upper corner thereof adjacent to the pivotal connection rounded and disposed in the path of movement of said lever whereby when the sections are extended the lever will be locked automatically, a weight on the free end of said locking lever for returning the same to locking position succeeding the engagement of with the rounded end of the second lever, and a spring for holding said lever normally in looking position. 1

In testimony whereof we afifix our signatures in presence of two witnesses. 7

JAMES OBRIEN. ADOLPH A. LUEKE.

whereby the Witnesses:

FLonnN on G. TRINLER, JULIA E. CURTIS.

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

Washington, D. G.

the first-mentioned lever,

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