US1028833A - Door-controlling means. - Google Patents

Description

HQ G. VOIGHT.

DOOR CONTROLLING MEANS.

APPLICATION FILED JAN. 25, 1912.

1,028,833,; v V Patented June 4,1912

2 SHEETS-SHEET 1.

gay/Ill!!! I III I IIII/IIIIII/I 1/ H. G. QIGH J D0011 CONTROLLING MEANS. APPLICATION FILED JAN. 25, 1912.

I .1 ,028,83 3; Patented June 4, 1912.

" 'Eg. 'Ei5z5.

B SHEETS-SHEET 2.

COLUMBIA PLANDURAPH co., WASHINGTON. Bic.

' HENRY G. VOIGI-IT, OF NEW BRITAIN, CONNECTICUT.

DOOR-CONTROLLING MEANS.

Specification of Letters Patent.

Patented June 4, 1912.

Application filed. January 25, 1912. Serial No. 673,287.

To all whom it may concern:

Be it known that I, HENRY Gr. VOIGHT, a citizen of the United States, residing at New Britain, Hart-ford county, State of Connecticut, have invented certain new and useful Improvements in Door-Controlling Means, of which the following is a full, clear, and exact description.

This invention relates to closing and looking devices for elevator doors and the like and has forits object to provide means which, while securely holding the door in a closed position, can, with the least expenditure of energy on the part of the operator, be manipulated to unlock and move the door out ofthis position, and which, from the open position, will automatically close and lock the door, the closing action being checked and controlled so that as a whole, it will be as rapid as possible and yet allow the door to close without any undue violence or noise.

A preferable embodiment of the invention is illustrated in the accompanying drawings, in which,

Figure 1 is a view in side elevation showing my invention applied to an elevator door. Fig. 2 is a cross sectional view through the door casing showing in top plan view the opening and closing mechanism. Fig. 3 is a vertical sectional view through the door closer cylinder. Fig. 4 is a view in elevation of the operating handle in its locked position. Fig. 5 is a similar view showing, the operating handle in unlocked door-opening position. Fig. 6 is an end elevation, partly in section, of the operating handle shown in Figs. 4: and 5. Fig. 7 is a top plan view of the locking disk. Figs. 8 and 9 are respectively side elevation and plan views of the door lock casing.

Referring to the drawing by numerals, 1 indicates a door casing forming part of an elevator well and 2 a sliding door of wellknown type.

3 represents a bracket secured to the elevator casing and 4 a door closing and checking cylinder pivotally mounted upon said bracket at the lower end thereof.

5 and 6 represent levers forming a toggle, the end of lever 6 being pivotally secured to the upper end of bracket 3 and having closely adjacent said end a transverse arm 7 to which is pivotally secured the upper end of a piston rod 8 extending within the door closing and checking cylinder 4:, the

detailed construction of which will be hereinafter referred to.

' At the forward'edge of the door 2 is secured a plate 9 provided with a post 10 on which is pivotally mounted the lower end of an operating lever 11 which is held thereon by means of a nut 12. Intermediate the ends of this lever and to the under face thereof is secured a circular casing 13 having its rear face open and provided with a transverse slot 14 in its front face, the lever arm 11 at such point being provided with a corresponding slot 11*. Extending inwardly from the side wall of this casing is a lug 15. This casing incloses a plate 16 secured to the forward edge of the door and preferably provided with a boss 17 from which a stud 18 extends outwardly through the slotted opening in the outer face of the casing 13 and through the lever 11, a nut 20 being screwed on its end and holding the casing and lever on said post. The casing itself is securely attached to and moves with the lever 11 by means of the screws shown.

The forward end of the lever member 5 is pivotally mounted upon the post 18 and the interior of the casing 13 and. has its edge .1

recessed at 22 to engage with said lug. This is accomplished in the following manner: A bowed spring 23 is secured to the edge of this disk opposite its recess22 and is provided with inwardly turned ends adapted for sliding engagement with the sides of the casing 13. This spring, being secured to a part fixed to the stud 18, bears against the side of the casing 13 which, by reason of the slotted engagement of the latter with the stud, is movable relative thereto. The spring 23 normally moves the caslng and 1ts attached lever forwardly to bring the lug 15 into the recess 23 in the edge of the disk. From this it is obvious that the toggle levers 5 and 6 cannot be moved from the position shown in full lines in Fig. 1 until the operating lever 11, attachedto the caslng, 1S givena slight pull to the right, moving the casing to the right and retracting the lug 15 p the door and its detailed construction and connections will now be described. As has been stated, this cylinder 4 is pivotally mounted at its lower end upon the bracket 3, and the end of the toggle lever 6 is pivotally mounted at the upper end of said bracket and is provided closely adjacent said end with a transverse arm 7 pivotally connected to the piston rod 8 of the closer cylinder. This closer cylinder comprises the casing 4 having mounted therein the piston rod 8 and a piston head 24. A powerful coil spring 25 bears against the top of the cylinder and against the piston head and normally forces it downwardly thereby pulling down the lever 6 and closing the door. In order to regulate the force and speed with which the door is closed thereby after being. opened, I provide a compressed air checking device by forming in the bottom of the cylinder an air vent 26 forming a bleed valve whose aperture is governed by a screw valve 27. By adjusting this screw, the rate at which the air can be forced from the cylinder by the spring pressed piston head 24 can be governed at will and a too rapid closing or slamming of the door prevented.

In operation my invention acts as follows: Assuming that the door is closed by the action of the closer cylinder 3 and that the toggle levers 5 and 6 are locked by reason of the engagement of the lug 15 with the recess 22 of the locking disk 21, the operator gives the operating lever 11 a slight pull, drawing the casing 18 and its lug 15 from engagement with the recess 22 as the lever and its casing have a limited free movement relative to the toggle lever 5. A continued pull on the lever will break the toggle joint and cause the door to slide open, the end of the lever 5, as this occurs, turning to the left or counter-clockwise and with it the disk 21 and its recess. It will be noted that I have provided a powerful leverage for drawing the piston 24 upwardly against the tension of the spring 25, this leverage being secured by having the arm 7 closely adjacent the fulcrum end of the lever. The operator, therefore, is able to open the door against the pressure of this spring with a comparatively slight pull.

WVhen it is desired to have the door closed, the operator releases his hold upon the lever 11 whereupon the closer spring 25 will force the piston rod 24 downwardly and through the toggle lever connections, slide the door disk 21 turning with the angular movement of the end of lever 5 and presenting its recess 22 to be engaged by the lug 15 on the interior of the casing 13, thereby locking the toggle levers and holding the door in closed position until the lever 11 is again moved by the operator.

I have described and shown this door controlling mechanism as applied to an elevator door provided with a closer cylinder, but it is, of course, obvious that the device is not limited to this type of door alone by any means, but can be applied to any door of the sliding type.

What I claim and desire to secure by Let ters Patent is:

1. In a device of the character described, the combination of a door casing, a sliding door, a lever pivoted to said door and connected to said casing and swinging with the opening and closing movement of said door, a member carried by and oscillating with the movement of said lever, a member pivotally mounted on said door and carrying a part adapted to engage said oscillating member as said door closes and lock said door against opening movement, and means whereby said member may be withdrawn from locking engagement and whereby said door may be opened.

2. In a device of the character described, a sliding door, a movable arm carried thereby, a connection for said arm independent of the door, an operating handle carried by the door, a locking device operable by said handle and co-acting with said arm to hold said arin against movement and to thereby lock said door.

3. In a device of the character described, a sliding door, a movable lever carried thereby, a connection for said lever independent of the door, an operating handle carried by the door, a locking device operable by said handle and coacting with said lever to hold lock said door, and closing mechanism for said door operatively connected with said lever to move the latter in a direction to move said door into closed position.

4. In a device of the character described, a sliding door, a movable lever carried there by, a connection for said lever independent of the door, an operating handle carried by the door, a locking device operable by said handle and coacting with said lever to hold said lever against movement and to thereby lock said door, closing mechanism for said door operatively connected with said lever to move the latter in a direction to move said door into closed position, means for regulating said closing mechanism. I

5. In a device of the character described, a sliding door, an arm pivotally mounted near one end on said door, a support or connection independent of the door for the other end of said arm, said arm being movable relatively to said door and to said independent support, an operating handle carried by the door for moving the latter, said handle having a limited independent movement relatively to said door, and a locking mechanism for said arm to prevent movement thereof and to thereby lock the door, said locking mechanism being controllable by the said independent movement of said handle.

6. In a device of the character described, a sliding door, a toggle lever connected at one end to said door, a cooperating toggle lever for the other end of the first mentioned toggle lever, a support for said second toggle lever, means for moving said toggle levers normally in a direction to transmit a closing movement to the door, and a looking mechanism carried by the door and coacting with said first mentioned toggle lever to hold the latter against movement when the door is closed, and a door-operating handle carried by the door and capable of limited independent movement relatively thereto, and means of connection between said handle and said locking means whereby the latter may be released preparatory to opening the door.

7. In a device of the character described, a sliding door, a pair of toggle levers, one of said levers being pivotally connected to said door and an independent support for the other of said levers, a door-operating handle carried by the door and coacting with one of said toggle levers to hold the same against movement and to thereby lock the door, said handle having a limited amount of independent movement relatively to said door to permit the release of said locked lever to permit said door to be opened.

8. In a device of the character described, a door, a casing, a pair of toggle levers, one lever being pivotally connected to the door and the other lever being pivotally connected to said casing, a door controlling handle carried by the door adjacent to the pivotal connection of the aforesaid lever and a locking means operable by said handle for holding said last mentioned toggle lever against movement to thereby lock the door in its closed position.

9. In a device of the character described,

a sliding door, a lever connected at one end thereto and having a swinging movement relatively thereto, an independent support for the other end of said lever, a door-operating handle also carried by the door movable therewith and relatively thereto and to said lever, a locking means for preventing the relative movement of the lever to the door, said locking means being controllable by the relative movement of the handle to the door and lever.

10. In a device of the character described, a sliding door, a lever carried thereby and movable relatively thereto, a door-operating handle also carried by the door movable therewith and relatively thereto and to said lever, a locking means for preventing the relative movement of the lever to the door, said locking means being controllable by the relative movement of the handle to the door and lever, and means to cause said locking means to engage and hold said lever against movement relative to the door when said door is closed, said locking means including a device carried by the lever and means co-acting with said device and carried by the handle, one of said parts having a notch and theother of said parts having a lug arranged to enter said notch to prevent said lever from moving.

11. In a device of the character described, a sliding door, a lever carried thereby and movable relative thereto, a door-operating handle also carried by the door. movable therewith and relatively thereto and to said lever, a locking means for preventing the relative movement of the lever to the door, said locking means being controllable by the relative movement of the handle to the door and lever, and means to normally cause said locking means to engage and hold said lever against movement relatively to the door when said door is closed, said locking means including a disk carried by the lever, and means co-acting with said disk and carried by the handle, one of said parts having a notch and the other of said parts having a lug arranged to enter said notch to prevent said lever from moving.

HENRY G. VOIGHT. Witnesses:

GWENDOLINE A. JAoKsoN, M. S. WIARD.

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

Washington, I). C.

Images