US1643454A - Car-door operation - Google Patents

Description

Sept. 27, 1927.

L. P. HYNES CAR DOOR OPERATION Filed May 1, 1925 \\\\\\\u I? r/// A ATTOR N EY INVENTOR LEE P. HYNES l l l l l r l l l l .h- I I I l l l I I l Patented Sept. 27, 1927.

LEE P. HYNES, OF ALBANY, NEW YORK,

PATENT orFlce.

ASSIGNOR, BY MESNE ASSIGNMENTS, TO

CONSOLIDATED CAR-HEATING COMPANY, INC., OF ALBANY, NEW YORK, A GOR- IPORATION OF NEW YORK.

Application filed May 1,

For a detailed description of the present form of my invention, reference may be had to the following specification and to the accompanying drawings forming a part thereof, wherein Fig. l is a front view of my device partly in section; g

Figs. 2 and 3 show details;

F ig. 4 is a plan and Fig. 5 a side View.

My invention relates to apparatus, for operating car doors by an electric motor through the intervention of a radial door arm. This combination permits the motor to immeditely attain its normal constant speed by reason of its high leverage advantage over the door at starting and to maintain such constant speed through the entire run of the door while imparting to the door a gradual increasing speed from zero to maximum followed'by a decreasing speed from maximum to Zero. This eliminates the need for resistance regulation of the motor, also the need of checking agencies for the door, since the radial arm becomes-so to speaka mechanical regulator for the motor, compensating mechanically, instea'dof electrically, for the extra inertia-loadof the door at stopping and starting. I provide herein certain features of improvement in door apparatus of this type, including a simple form of clutchfor disconnecting the motor from the door to allow the door to be worked manually.

Referring to the drawing, A represents the door with a channel B on its rear edge wherein travels vertically a roller 0 on the outer end of a radial arm 0 on the arm shaft D. The shaft D is operated by the shaft D through a clutch. Y is the motor. driving shaft D through the worm gear N and O O are limit switches operated by a bar 0' on shaft D at each end of its run. The arm C occupies the full-line position when the door is open and the dotted line position when it is closed, the rear edge of the door occupying when open the position a and, when closed, the position b. The arm C, when the door is open, is inclined upwardly from the shaft D and inclined downwardly therefrom when the door is closed, as appears in Fig. 1. By this means the door when closed is securely locked by the arm which is of particular importance if the CAB-DOOR OPERATION.

1925. Serial No. 27,268.

motor is unclutched from shaft D when the door might otherwise be arred open. When the door is open the arm must be at or near the horizontal. Otherwise-it would be difficult to stop it against the base of the motor and its extension spring R might collapse suificiently to allow it to pass the horizontal where it would come up again with a jerk and cause a shock to the mechanism. The

' angle of the door arm is positively determined, in each of the two positions, by stops (Z and g on the base E of the motor. The shorter stop 9 is for the door-closed position and the longer stop (Z for the door-open position. Thus the run of the door is fixed independently 'of any yielding of the door jamb or of any rubber filling onthe door-edge abutting against the jamb. Moreover, a bar F is hinged at one end to the base E of the motor and its free end has a cord or wire G secured to it'which passes over a pulley T on the door-frame near the top of the door and terminates in a handle by which the bar may be manually lifted. On the upper edge of bar F is a short projection 70 and a longer projection f, these projections having offsets at their upper ends which take under the door arm C, the offset on shorter projection is when the arm is in its door-closed, and that on projection; when the arm is in its dooropen position. In eitherposition a pull on cord G will lift the arm from its locking position and so free the door for hand operbeing free to slide longitudinally thereon.

The discs are separated by means of yokearms 39 and g which bear on the face'of disc J. The yoke and yoke-arms pivoted on the stationary framework at h, h, are oper ated by a treadle P to separate the discs against the pressure of spring WV and when so operated a stud S on the yoke rides under a latch H and the discs are thereby locked apart. The door can then be operated by hand independently of the motor, which may at that time be disabled or not supplied with current. On the hub of clutch-disc K is a cam projection M, which, when the motor is a condition.

. is open.

restarted will hit the tail of latch H and so release the yoke and permit spring V to throw the clutch discs into engagement. Thus when it is desired to operate the door by hand it is ionly necessary to step on treadle P. That will unclutch the door and motor and leave the clutch latched in its open It will notbe necessaryto pay any further attention to the clutch, for when the motor is started again it will automatically re-engage itself with the door.

The apparatus above described constitutes a simplified development of that shown in my pending application, No. 6,788, seriesof ,1925, filed February 4th, 1925, and is particularly useful in an arrangement wherein the shaft D is driven by the motor through a screw-gearing, as shown herein, and in my application aforesaid. Any other type of non-reacting gear may be used. In such :an "organization themanual operation, when the motor is disabled, is facilitated by the clutch .that disconnects the motor from the door, leaving the latter free to be moved by hand.

hat I claim as new and desire to secure by Letters Patent is; i U a V 1. A door operating mechanism comprising an electric motor, a door arm operated thereby and a manual clutch interposed between the door arm, and said motor, said door arm being set to assume an angle .with its free end below the horizontal when the door is closed so as to hold theidoor locked 'while the motor is unclutched and to assume an angle above the horizontal when the door 2. A door-operating mechanism comprising an electric motor, aclutch, a door arm, and a lifter for the door-arm acting on the arm in either the closedor open position of the door. i l

3. A door-operating mechanism comprismg an electric motor, a clutch, a door-arm and a lift-er for the door-armhaving engaging means at difierent levels to engage the door-arm in either the open or closed position of the door.

LA door-operating mechanism comprising an electric motor, a clutch, a door-arm and stationary stops for the door-arm at different levels,

5. A do0r-0perating mechanism comprising an electric motor, a radial door-arm, a manual clutch between the motor and the door, a clutch operating lever and a latch for locking the clutch operating lever in its di engaged condition, said latch being supported independently of the lever;

6. A door-operating mechanism comprisin an electric motor,a radial door-arm, a manualclutch between the motor and the door, a clutch operating lever, a latch ior locking-the clutch in its disengaged condi tion, and motor-operated meansfor releasing the clutch.

7. door-operatingmechanism compris ing an electric motor, a radial doorarm, a spring clutch between the motor, and the door, a pedal controlling the disengagement of the clutch, a latch for locking the clutch in its disengaged condition, and inotor-operstationary base for operating the said movablemember, a latch for locking the movable member in its disengaging position and mo- 9. A door-operating mechanism comprismg an electric motor, a non-reversing between the a motor and the door, a, radial door-arm, stationary stops for each extreme position of the door-arm, a manual lifter for each of saiddoor-arm positions, a manual clutch between d0or-arm and themotor,a

spring-actuated lock for the clutch in its disand motor-actuated connected position,

means for releasing said lock;

Signed at Albany, county of Albany,

and State of New York, this 27 day of April,

l LEE RHYNES tor-operated means for releasing the clutch. l

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