US1405623A - Electrically-controlled door lock for cars - Google Patents

Description

R. H. PARSONS.

ELECTRICALLY CONTROLLED DOOR LOCK FOR CARS.

APPLICATION FILED APR. 4, 1919.

Patented Feb. 7,1922.

UNITED STATES,

RAYMOND n. PARSONS, or EW YoBx, N.. Y., ASSIGNOR 'ro mmanrafmmm COMPANY, on NEW you, n; 'Y., A CORPORATION or WEST .vmerm'a.

ELECTRICALLY-CONTROLLED noon LOCK ron'cim's.

is a specification.

- invention,

- cuit employed in accordance with myinven throughout the several'views.

This invention relates to electrically controlled door locks for doors employed on "street cars, interurban"cars,"subway or eleparticularly to such cars or trains vated trains, railway trains, or the like,'and which 'are electrically operated.

. The object of the'invention i's to provide an electrically controlled door lock. which is simple in construction, efficient in operation,

and economical of manufacture, and readily assembled, and which requires little or no attention in upkeep. v Q

"A further object of the invention is to provide' an electrically controlled lock for doors which will effectively 'lock the door against accidental ordeliberate opening while the car-is'inmotion.

"Other objects of theinvention will appear more fully hereinafter.

The invention consists substantially in the construction, combination, location and relative arrangement of parts, all aswill'be more fully hereinafter set' forth as shown by'the accompanying drawing and finally pointed are well known'in-the art and are the stand- "ard' type of doors employed, and for the ,purpose of illustratingmy invention I-ihave applied the principles thereof to a"r tating member which may be the actuatingshaft out in the appended claims.

Referring to'the drawing f Fig. 1 is a top plan view of a door lock mechanism employed in accordance with my "Fig. 2 is a its unlocked position.

similar view showing same in same with the parts in th'e position shown'in Fi 1. V

%ig. 4 is a sectional view takenon the'line' 4, 4:, Fig. 3, looking in' the direction of the arrows. y

5 is a diagrammatic vIew of the'c'lrtion. I

The same part 7 reference character wherever In accordance with my invention fI 'propose to provide a door lock for street' cars, or-

7 other cars which are electrically dri'ven,iand

tofutilize the currentsupplied to the motor I Specification of Letters P atent.

. dental or otherwise.

' inoperative when the car is standing 'still.

is designated by. the 'same' .it occurs.

Patented Feb. 7, [1922.

Application filed A ril 4(1919; 'seriaiiwo. 287,385.

" of the car when th'e same is beingipropelled.

to lock the door against movement, acci- I further propose to utillze the established principle that when the-car is coasting, or is moving due to its momentum, the driving motor being geared to'the wheels and continuing therefore to rotate, actsas a generator of current, andI utilize the current thus generated when the car iscoastin or moving un'der "its own momentum to ikewiselock the door in "its closed position so that 1. thereby obtain a permanent electrically operatedlockfor the door which can only be unlocked or rendered It is known to employ pneumatic *motors for operatin doors and to. provide means for electrical Y controlling the control valve of the pneumatic motors whenithe car is in motionto prevent the actuation of the motor to open the door. A'great many of the cars "at present in use, however, are of the manually operated type,and -it is-principally to the manually voperated doors of electrically driven cars that my present inventionis directed, andin accerdancetherewith when the car is in motion 'I lpreventim'annal of the door or it maybe any shaft in the door operating mechanism which upon rotation effects the opening of the door. fThis' shaft I haveindicated atzl,.and suitably located at the end thereof to rotate therewith I provide a disk*2 with anotch. or jog '3 out thereinaszshown. In practice I' refer-to havethe shaft 1 pass through .a p ate or support "4 which is mounted 'atthe l'tOp of the-door to be out offtheway, unseen,

and less 'aptto "become accidentally or otherwise deranged. Pivotally mounted on the heldon apin 8'carried by the plate 45in any'suitable manner, for example, by'means of a cotter'pin. The "end 630f dog '5: is

adapted to 'fit into the jog 31 0f therota able-ilo 7 disk 2. A spring 9 is fastened to a pin .on the plate 4 and a pin 11 on the leg 7 of the dog to normally tend to project the leg 6 of the dog 5 into the jog" 3 of the disk 2. Also mounted on theplate 4 is a suitable magnet 13 which may be of any desired type or construction, or as 1llus- "trated,'the armature of which is a plate 14" A spring 21 is interposed between'the frame 16 and the armature 14. From the foregoing 'construction it will be seen that the arm 19 is moved about'its pivot upon actuation of the armature 14 but that its movement is slightly in advance of the armature-14 when the armature is attracted towards the magnetand is slightly behind the movement of .the armature 14 when the magnet is deenergized due to the pin and slot connection between the armature 14 and the arm 19 secured by means of the pin 17 and the yoke 18. The end of the arm 19 has secured thereto a block 20, which, when the magnet is energized, and as shown in Fig. 1, becomes positioned between the end of the leg'7 of the dog 5 and a stationary block 21 secured to the plate 4.

The operation of the device thus far described will be apparent. If the magnet 13 is energized the. armature 14 and conseuently the. arm 19 is drawn into the position shown in Fig. 1 and thereupon counterclockwise rotation of the shaft 1 as indicated ;by the arrow is prevented because the end of the jog 3' bears against the leg 6 of dog 5 and the leg 7 of dog5 bears against the movable lock block 20 and'the fixed stop .block 21", thereby preventing the rotation of the'shaft 1. As soon, however, as the magnet is deenergized the shaft 1 is rotated counterclockwise asindicated by the arrowin Fig.

2.- The jog 3 in the disk 2 causes the dog 5 to-be rotated about its pivot 8 against the action'of the spring 9 for the block 20 "of the arm-19 has been drawnout of the 'path'of the end of the leg 7 of the dog 5.

' In the present equipment of-street cars the counter E. M. F]? principle of the motor acting as a generator when the car is .mov1ng"due to its own momentum has been "utilized extensively incoasting recorders or timeire'corders in the manner shown and de- :scribed in Letters Patent to Messrs. Hall -'and Hall,*No. 1,201,041, datedOctober 10,

. 1916, and'in Letters Patent to Messrs. Wade &Chappe1le, No. 1,275,328, dated August 13,1918, and it is therefore the present practice to employ a circuit arrangement z som'ewhat'similar tothat shown in Fig. 5,. wherein current is supplied from the third 1: J

raihtrolley wire or thelike, to line 30 where i current also to said device it passes through solenoid 31 to the car motor by a conductor 32 (not shown). Thus if currentlis being utilized by the motor to propel the car the solenoid 31 raises its plunger. 33 to establish circuit connection between contacts 34 and 35, one of which contacts, namely 34, is connected. to the source throughwire 30, and the other of which contacts is connected to the magnet 13. Thus it will be seen that when the car is being propelled by electricpower the magnet 13 is energized to lock the door against opening. Likewise, when =thecurrent is not being supplied from line .30, and consequently the. solenoid 31 is deenergized, the plunger establishes circuit connection betweencontacts 36 and 37 so that the motor 38 being rotated generates current which is supplied through contacts 36,37, to the magnet 13, thus preventing the door from being opened when the car is in motion and being propelled from the electric' source. In both of the foregoing instances the magnet 13 isconnected to ground in any suitable manner to establish. the complete circuit.

Many modifications and changes in detail will readily occur to those skilled in the art without departing from the spirit and scope of my invention as defined .in'the claims, but having now set forth the object and nature of my invention and'having shownand described a structure and'arrangement. embodying the principles thereof, what I claim as new and useful and of my own invention'fand desire to secure byLetters Patent is, 1. In a locking device for doors of electrically driven cars, the combination with an actuating member to 'be moved, an electrically actuated locking device, means for supplying current to said device from the main current supply when'the car is ele'ctrically propelled and means for supplying from a generator. 110

"spring controlled means for engaging said notched disk, electrically actuated means ineluding a block member for engaging said spring controlled.ameans to form a locking device," and means for supplying current to said electrically actuated means when -12 the car is coasting under its own momentum.

. 3. In a locking device for doors of electrically driven cars, the combination with a rotatable shaft and lock mechanism, including a lock dog and stop blocks, forlocking. said shaft against rotation when the car is inmotionfl x 4. In an electrically operated-lock mechanism fordoors ofelectrically operated cars, a solenoid, Janotched lock disk, a spring .130

pressed pivotally mounted lock-member normally engaging said notched lock disk and means for engaging said lock member against movement when the solenoid is energized.

5. In a locking device for doors of electrically driven cars, the combination with a rotatable shaft, a disk carried by said shaft, and provided with a jog therein, a dog normally adapted to lie in said jog and to be rotated upon rotation of said shaft, means adapted to prevent rotation of said dog, and electrically controlled means for locking said dog against rotation. v

6. In a locking device for doors of electrically driven cars, the combination with a rotatable shaft, a disk carried by said shaft, and provided with a jog therein, a dog normally adapted to lie in said jog and to be rotated upon rotation of said shaft, means capable of moving into the path of said dog, and electrically controlled means for locking said dog against rotation, and means for actuating said electrically controlled means when the car is in motion.

7. Ina locking device for doors of electrically driven cars, the combination with a rotatable shaft, a disk carried by said shaft, and provided with a jog therein, a dog normally adapted to lie in said jog and to be rotated upon rotation of said shaft, an obstruction block adapted to be positioned in the path of said dog to prevent the rotation thereof, a magnet for drawing said block into position to obstruct said dog, and means for normally withdrawing and retaining said block out of the path of said dog when the magnet is not energized.

8. In a locking device for doors of electrically driven cars, the combination with a rotatable shaft, a disk carried by said shaft, and provided with a jog therein, a dog normally adapted to lie in said jog and to be rotated upon rotation of said shaft, an obstruction block adapted to be positioned in the path of said dog to prevent the rotation thereof, a magnet for drawing said block into position to obstruct said dog, and means for normally withdrawing and retaining said block out of the path of said dog when the magnet is not energized, and means for energizing said magnet when the car is in motion.

In testimony whereof I have hereunto set my hand on this 1st day of April, A. D. 1919. V

RAYMOND H. PARSONS.

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