US2078838A - Door controlling device - Google Patents

Description

April 27, 1937. s. c. CHRIST! 2,078,833

' DOOR CbNTRQLLING DEVICE Filed Feb. 28, 1955 2 Sheets-Sheet 1 April 27, 1937. s. c. C HRISTY DOOR CONTROLLING DEVICE Filed Feb. 28, 1935 2 sheets-sheet 2 frevwezar Patented Apr. 27, 1937 unrrso stares Parent orFicE 2,078,838 noon. oon'rriopmnor DEVICE George C. Qhristy, Chicago, Ill. Application February 28, 1935, Serial No. 8,627

2 Claims. .(Cl. 292-53) 1 inoperative the holding device that holds the door in any given position.

The invention has as a further object to provide adoor controlling device'for Conn-011mg m orally movable doors.

The invention has as a further object toproviole a door controlling device which is mounted on the door and forms a part thereof.

The invention has as a further object to provide a door controlling device particularly adapted for the sliding doors of cars. f

The invention has as a further object to pro vide a door controlling device for a laterallymovable door or" a car which automatically prevents 5 the lateral movement of the door'in either direction due to movement or stopping of the car.

The invention has other objects which are more particularly pointed out in the accompanying description.

Referring, now tothe drawings, Fig. l is a View of one form of door controlling device embodying the invention; I I

Fig. 2 is an enlarged view of the bottom partof the door showing the position of the parts when 5 the handle is moved in the direction of .the arrow to move the door; 1

Fig. 3 is a View similar to Fig. 2 showing the handle in the central position and the door locked against movement;

Fig. 5 is a sectional view taken on line 5-5' of Fig. 3 with the upper part of the door in section added thereto; 5 Fig. 6 is a view similar to Fig. 2 showing a modified construction of door controlling device;

Fig. 7 is a sectional view taken on line l! of Fig. 6.

Like numerals refer to like parts throughout the several figures.

Referring now to the drawings wherein for purposes of illustration I haveshown the door controlling device in connection with a laterally movable car door, it is of course evident that it Fig. 4 is a sectional viewtake on of ally movable car door. At the bottom of the door are rollers 2 and 3 which engage a track 4, the door rolling along this track. One of the difficulties of such a door is that when the car gives a sudden move, the door will move, and also when the car'is suddenly stopped. This often causes the door, if it should be unlocked, to move back and forth and be battered at the ends of its travel and injured by such battering. This movement is something that it is exceedingly desirable to prevent.

In the construction shown in Figs. 1, 2, 3, 4, and 5 the controlling device is attached to the door and forms a part thereof. In its simple form the device consists of a plate 5 which is attached to the door in any desired manner, 'as

by the fastening devices 5. Mounted in proxim- A ity to this plate and preferably mounted thereon are the control members I and 8, preferably pivotally connected in position. In Figures 1 to 5 I have shown two separate controlling members I and 8 pivoted at 9 and ill to a suitable fixed part on the door, which may be the plate 5. These controlling members are provided with engaging ends I I and I2 which engage a fixed part 4 associated withthe device with which the door is used. A handle grasped by anyone on the ground, and this handle is arranged so that when pressure is applied to it to move the door, it will release the controlling device which holds the door against this movement.

"Any suitable connection between the handle and the controlling members may be utilized. In the particular construction shown, the plate 5 is'pr'ovided with a slot l5 through which the handle I l projects. Connected with this handle on the inside of the plate is a piece [6 which covers the slot when the handle is in any of its various positions. There is alsov connected with the handle M an actuating part i! which moves one of the control members to its inoperative position whenthe handle is moved in one direction, and which moves the other controlling member to an inoperative position when the handle is moved in the opposite direction. In the construction shown this is accomplished by the actuating part ll being located between the control members, as clearly shown in Fig. 4. The control members are enclosed between the plate 5 and the part l8, which may be the door itself or some part associated therewith so that the control mechanism It is suitably located to be Cir is inaccessible and hidden from view. At the top of the door there are usually provided guides la which engage stationary parts lb on the car, a portion of the guides la projecting under the part lb.

In Figs. 6 and 7 I have shown a modified construction wherein the two control members la and 8a are mounted upon the same pivot 8b. The other parts are similar to the construction shown in Figs. 1 to 5 inclusive.

While in Figures 1 to 5 inclusive I have shown the device applied to a metal door, I have in Figures 6 and 7 shown the device applied to a wood door. In this construction there is an opening cut in the bottom of the door and the plate l9 to which the control members are connected by the pivot 8b, is fastened to the outside of the door by the fastening devices 20. There is a rear plate 2! and the control members la and 8a are between the plates l9 and 2 I. The pivot 8b preferably passes through both of the plates. The control members are preferably cut away at their upper ends so as to overlap, as clearly shown in Fig. 7. The engaging ends 22 and 23 engage the part 24 of the device with which the door is used. The handle 25 passes through the slot 26 in the plate l9 and has an engaging part 21 which projects between the control members la and 8a. There is a closure 28 for the slot 26.

I have described in detail certain particular constructions embodying the invention, but it is of course evident that the parts may be changed in form, construction and arrangement, and some of the parts omitted and others used which are not herein shown, without departing from the spirit of the invention as embodied in the claims hereto appended, and I therefore do not limit myself to the particular construction shown.

The use and operation of my invention are as follows:

The door I in Fig. 1 is shown down on the rollers 2. When the handle of the car is free, that is, is released, it stands intermediate the control members, and these control members are in the position shown in Fig. 3, wherein the engaging ends ll and l2 engage the part 4 and the door is lifted off of the rollers so that it cannot be accidentally moved in either direction. I prefer to have the parts la and lb so related so that when the door is thus lifted off the rollers, the part of the guide la under the part lb engages said part lb, or the top edges of the door may engage a fixed opposed part, so as to assist in holding the door against movement.

When it is desired to move the door, the handle M is grasped. If the handle is moved in the direction of the arrow, that is to the right in Fig. 2, the actuating part l'l engages the control member l and moves its lower end ll outwardly and upwardly so as to release it from engagement with the part ll. The door can now be moved to the right, as this movement causes the lower end of the control member l2 to move outwardly and upwardly so as to release the door, the door then coming down upon its rollers and being easily moved to any desired position. If the door is to be moved in the opposite direction, the handle I4 is moved in the opposite direction, moving the end l2 of the member 8 outwardly and upwardly, freeing the door so that it may be easily moved. When the handle is released, the lower ends of the control members are in engagement with the opposed part 4. Under these conditions a slight movement of the door in either direction causes the lower end of one of the control members, depending upon which way the door is moved, to be moved inwardly to securely engage the part 4 and lift the door from the rollers and hold it against any accidental movement. When the handle I4 is grasped and moved in either direction, it releases the control member to which it applies pressure and permits the door to be moved so as to release the other control member and the door rests on the rollers and can be moved to the point desired.

The operation of the device in Figures 6 and 7 is similar in every respect to that above set out.

It will therefore be seen that I'have here a simple, inexpensive control device which prevents accidental movement of the door in either direction, but which permits its easy movement in either direction when the handle is grasped.

It will further be noted that the same handle which is used to move the door, also acts to ref lease the control members. This device, therefore, does not require the operator to do anything different from what he does with the ordinary door, for he grasps the handle just like he grasps the handle of the ordinary door and applies pressure to it, and this releases the control members and causes the door to move to the desired position. When he releases the handle, the control members act to raise the door and prevent accidental movement in either direction.

I claim:

1. A door controlling device comprising a movable handle for moving the door to open and close it, a lifting mechanism with which said handle is associated connected with said door for lifting and supporting the door when pressure is applied to the door at a point separate from the handle when the handle is released, said handle having a controlling engagement with said lifting device, the movement of the handle, for the purpose of opening or closing the door, rendering said lifting mechanism inoperative, said handle being separate from said lifting mechanism.

2. A door controlling device comprising a door lifting mechanism connected with the door for lifting and supporting the door when pressure is applied to the door at a point separate from the handle, a handle for moving the door to open and close it, and an operative connection between said handle and the door lifting mechanism for rendering said lifting mechanism inoperative when pressure is applied to the handle to move the door.

GEORGE C CHRISTY.

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