US1001944A - Door-operating mechanism. - Google Patents

Description

P. R'. FORMAN. DOQR OPERATING MBGHANISM. APPLIQATION FILED SEPT. 16, 1909.

Patented Aug. 29, 1911.

3 SHEBTSSEEBT l.

A ANA/NNW P. R. FORMAN DOOR OPERATING MBCHANISM. APPLICATION FILED SEPT. 16

Patented Aug. 29, 1911.

3 SHEETS-SHEET 2.

@wi/knew@ P. R. FORMAN.

DOOR OPERATING MECHANISM.

APPLIGATION FILED SEPT. 1s, 1909;

UNITED STATES IAYIENT OFFICE PARIS R. FORMAN, OF CHICAGO, ILLINOIS, ASSIGNOR, BY IVESNE ASSIGNMENTS, TO NATIONAL PNEUMATIC COMPANY, A CORPORATION OF WEST VIRGINIA.

DOOR-OPERATING MECHANISM.

Speciication of Letters Patent.

Patented Ang. I29, 1911.

To all i/.ri-o'm it may concern:

Be it known that I, Panis R. IORMnN, a citizen'of the United States, residing in the .city of Chicago, county of Cook, and State provide door operating mechanism eni- .bod in@ ower devices for movin the door means to enable and automatic ,releasingl 1 and independent y the door to be moved by of the power devices.

A further object of the invention is to` provide door operating mechanism, includ.

ing power devices for operating the door, and automatic controlling devices whereby. when the door is wide open, it can be closed either by hand or by the power devices as desired. f

A 'further object of the invention is to provide a door operating mechanism including power operated devices for moving the door and means whereby the door can be moved by hand, independently of the power operated devices, the power operated devices fo-llowingup the door movements and effecting the final movement of the door,

'- if desired, and ready to accomplish thel power actuation of the door.

Other objects of the invention will appear more fully hereinafter.

vThe invention consists substantially in the construction, combination, location and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown in the accompanying drawings, and finally pointed out in the appended claims.

lIn the accompanying drawings,Fignre 1 is a view in side elevation of a construction embodying the principles of myinvention. Fig. '2 is a detail view, showing a dis'- placed position ofthe parts. Fig. 3 is 'afsimilar view showing means for causing the power operated devices to follow up the movements of the door when effected by hand independently of the power devices. Fig. et is aview in vertical transverse section on theline 4, 4, Fig. 3, through the pivot of theqdoor operating arm or lever.

In carryingout my invention, I provide power operated devices, which, under suitable control, edects the opening and closing movements of the door. I also provide means whereby the door may be detached from its power operated devices so as to'be capable of movement by hand independently of such devices. I'also provide means whereby, when desired, the door movements, when eifected by hand independently of the power devices, may be followed up by the power devices, and the latter automatically engaged with the door so as to complete, if necessary, the final movements of the door and to hold or lock the door in the limit of its movement, or whereby further movement of the door may be effected in either direction by the power devices. Y

In Figs. l and 2, I have shown a door operating mechanism `embodying power devices for eifectingl the operation of the door, with automatic detachable devices whereby t-he door may be moved by hand independently of its power mechanism, and in Fig. 3,

I have shown applied to such mechanism means for enabling the'power devices to follow up and to automatically engage or lock with the door moving devices, whereby y the door movements are again under control of the power devices.

Referring particularly to Figs.` I and 2, the operating cylinder of the power devices is formed of two portions A, A', arranged in line with each other, in each of which' operates a piston B, B', these pistons being connected together through a rack C. The proximate ends of the portions A, A', of the power cylinder are open to the atmosphere and, subject to suitable control,

oressure medium is su 'Jlied to the remote ends of the portions A, A, from a valve' chest F, througlinthe operation of a suitable valve, of which G is the operating arm, the movements of which being controlled in any convenient orysuitable manner, or froinany desired point,as for instance, yvmeans of a cont-rol handleII, and intermediate connections The' rack C, mesheswith and rotat-ively actnate's ,a segment gear D, for operating the door moving lever K.

The\parts so far described, in the specific details of construction or operation thereof, form no part of my present invention, and they operate in the usual manner of such devices. The arm K, beingconnected to the .doorL for operating the same in the usual or l.any ordinary or well known manner, so that `when the lever K. is rocked in one direction or the other, the door is correspondingly moved into open or closed position. In this form of my invention, the door moving lever K, is mounted upon and rocks with l ya shaft 4, journaled in a standard 20, which engage the arm 9, of

isshown as part of the cylinder casting. ,The segment gear D is loosely hinged or pivoted to rock on the shaft 4:, and is provided with an arm 5, having a lug or pro'- jection 6, arranged to engage against one edge of the door operating leverl K. A vpawl-7 is pivoted as at 8, upon the arm or extension 5, of the segment gear, said pawl having Van arm 9, normally held by `the spring 10, or otherwise, against a stop 1.1, kand 1n position for the end off' the pawl engage a shoulder 12, formed on or secured to the door operating lever K, and shaft 4.' .A fixed stop'13, is arranged to thepawl 7,' when the door is in its wide open position,'whereby the pawl is rocked about 'its pivot 8, to disengage the pawl from engagement with shoulder 12.y

From the description, it will be. seen that if the valve .control handle H, is moved to operate the valve to admit. pressure to the closed end of portion A', ofthe cylinder, so as to cause the pistons B, B, to move `toward the left hand end of the power cylinder, the rack gear D, will be rotatively movedLand with it the arm 5, and the lug or proj'ection y6, in the same direction as that of. the hands of a clock, the lug or pro- .will-be carried out of quently moving the door.

jection 6, engaging against the rear edge of the door operating lever K, and conse- The moment this motion isinaugurated, the arm 9 ofl pawl 7, engagement with stop 13, thereby enabling spring 10 to move pawl 7 into engagement with the shoulder 12,

thereby securely locking the door operating lever K, to the arm 5, and gear D, so that any further motion .of the power mechanism, in either direction, will cause a corresponding movement of the door operating ever K, and therefore of the door. If, however, when the door is wide open, this being the position of the parts shown in Fig. l, and it is desired to close the door by hand, and without the intervention of the power devices, the door can be easily and readily moved toward closed position, since the door operating lever K, and the locking 'shoulder 12, are movable entirely independently of the arm 5 and pawl 7, said pawl being disengaged from' the locking shoulder 'rection to cause the lug 6I 12, when the door operating lever is in its extreme position of throw to open the door. In other words, by completely opening the door, the power me chanismv through which t-he door operating lever K, may be operated, is entirely disconnected from the door operating lever, leaving thedoor operating lever free to rock or swing independently of the powerdevices, and hence enabling the door to be moved by hand toward closed position, the operating mechanism being left in the position corresponding to that occupied by it whenthe door is wideopen. In this man- Iier, the door may be, if desired, completely closed or opened .by hand, and independently of its power operating 'mechanism Whatever position into which the door is moved, by hand, whether it isV partially closed or completely closed, after being detached or disconnected from its power operating devices, said power operating devices are left in condition to be again coupled operatingly with the door moving lever K. This is `accomplished by manipulating the valve control handle H, or the valve arm G, in such manner as to admit the pressure medium to the closedtend of portion A `of the cylinder, thereby causing the rack bar C, `connecting the pistons B, B, to move toward the left, and through the engagement of said rack bar with segment gear D, causing the latter to rock. freely about its pivot shaft 4,

of'arm 5,.to api door operating proach or follow up the was moved bv lever K.` When the door yhand from its wide open position, and after the pawl 7 has been disengaged from shoulder 12, said shoulder moved freely past the engaging end of pawl '7. Therefore, when the segment gear D is rocked to causeflug and in a dia 6 to follow up or approach the door operat# ing lever K, and effect a rengagementrof the pawl mechanism with lthe door operating lever K, the engaging end of pawl 7 rides over the surface 15, 'until said engaging end snaps again into engaging` relation with respect to shoulder 12, under the influence of vthe tension of spring 10, thereby again locking the power operatingfmechanism to the door` operating lever, the pawl 17 engaging the shoulder 12, in one direction, and the lug @engaging the door operating lever K, in the'other direction so as to compel coincident movement of the power mechanism and the door operating lever K. Thereafter, the power mechanism may com- 4plete the closingA movement of the door, if

the door hasl not alreadybeen completelv closed by hand, and'also securely holds the door closed by the pressure of medium in the power cylinder.

In practice, I

prefer to so arrange the` parts that when the door is closed, the doorv the operating` ,f

movinglev'er K, will occupy substantially' or cally follow up and be rengaged or recoupled to the door operating lever after the' ower mechanism has been disconnected,

om the door operating lever, by moving thedoor into completely" opened position, as 15 above-explained, to permit the door to be moved byphand, independently of the'v power mechanism. "Itmay also be 4desired to pro- Vide means fo'r automatically operating the valve in the valve Vchest -so as to secure a cushioning effect of the door as it appreaches the limits 'of its' movement. ln Fig. 3, I have shown means for accomplishing these purposes, as one particular embodi- -ment ofdevices for accomplishing said re` 25' sults', and wherein a casting 16, is pivotally mounted as at 17, upon the standard 20. This casting 16, is provided with a lug 18, connected through arod 19, with the valveoperatinglever Gr, so that by rocking casting 16, in one direction or the other', the valve lever G is automatically rocked to actuate thevalve.- A cam, indicated in dotted lines at '21,'v is attached to the side of the segment Vgear D, and works through an opening or seat,lindicated at 22, in the castingd, where- ,by the valve controlling lever G, may be automatically operated, as the power mechamsm approaches the limits of its stroke in eccentric relation with respect to said shaft 4. An arm 24, is pivotally mounted inter-- the door approaches the limits of its movements. Attached to the end of shaft 4, upon which the door. operating lever K is mounted, 'and which rocks with said lever, is a pin or stud 23, said pin orstud being mounted in mediate its ends upon the' stud 23. To one 24,- is free to move upwardly when rocked about `-itspivot stud 23, but when rocked downwardly, said free end of arm 24, brings up against a lug 30, formed on casting 20.

, It will be noticed that since the pin 23, is

mounted in eccentric relation with respect to the axis of shaft 4, therefore, when the door operating lever K, is moved from the position occupied by it when the door is in completely).

to the door operating lever y together, the valve controlling lever-Gg, wiill either` direction to effect a cushioning of the` -door movements, 1n a well known manner, as'

end of arm 24, is pivotally connected a linkl opened position, this being the position s own in Fig; 3, the shaft 4, is also axially rotated in theidirection of the hands of a clock. Consequently, the eccentric stud 23, will be moved around the axis of ,rotation oi' shaft 4. gli, at the time the door operating lever K is thus moved to cause the door'to move toward closed position, and the eccentric stud 23, correspondingly moved, as

above' stated, the power operat'ng mechanism is moving with said lever the pistonsB, B', andrack bar C are coincidently" moved, the lug 29, will be immediately withdrawn lfrom4 proximity 4to the bell crank n lever arm 27, and therefore the movement of' eccentric stud 23,.'about` the axis of shaft 4' will merely result in freely moving or rocking't-he bell crank 26, 27, and thevalve controlling mechanism will nt be'inany Wayaected.l So long, therefore,`as the power operating mechanism is coupled or connected K, so as to\move not be affected' by the positionl of eccentric stud 2 3.' It, however, the dom` operating lever K,is disconnected I erating mechanism, and is moved by hand in the direction to close' the door, so thatthe eccentric stud 23 is moved around the axis of shaft 4, the-pistons and rack C,vnot being moved, the lug 29, will serve as a stop to' prevent the free rocking movementl of the arm 27 of the bell `crank lever,.and thereferred to, will b e imparted to the free end ofarm 24, which free end will consequently be forced against l'ug'30, thereby rocking the casting 16, about the plvot 17, and causing the 'valve lever connecting rod 19, to be moved toward the right. These various connections are so proportioned, that just as the door approaches and. nearly reaches its closed position, the valve lever connecting rod 19 will have been suiiciently moved to place the valve lever G in such a position that the operating medium in the 'power cylinder will be reversed, thereupon causing the pistons` and rack C, and consequently, the segment gear D, to move in the reverse direction, or

in a direction to followup automatically the door closing movement ofthe lever K, thereby completing the closing movement of the door, if such movement has not already been completed, and securing the door in closedposition, the power mechanism automatifrom the power op- 4fore the movement of eccentric stud 23, rc-

cally attaching itself, as above explained, to

the door operating lever, and hence again placing the dor operating lever under the control of its power operating devices.

It will be noticed that as soon as the pistons and connected rack begin to move in a direction to cause the rack arm 5, to follow after, or to follow up the movement of the door operating lever K, the lug 29 will be withdrawn from engaging relation with respect tothe bell crank arm 27, thereby releasing the lock which previously had held the free end of arm 24 against the shoulder 30, of casting 16, and consequently enablingy the castino 16, thereafter to be freely rocked, as, or instance, by manipulating' the valve control lever G, by the actuations of hand lever H, and thereby enabling the power mechanism under control of the hand lever H, to be brought into action to move the door to open position. It will be seen therefore, that the final closing movement of the door, not only automatically moves the valve to cause the power mechanism to follow up the ,door closing movement of lever K, the follow u'p movement of the power mechanism being initiated just as the door approaches its closed4 position, but also the mechanism which automatically moves the valve lever, in the manner just described, is automatically released, as soon as the power mechanism has'startedl on its follow up travel, so as to permit thereafter the manual control 'of valve lever' Gr, from the hand lever H.

From the foregoing description, taken in connection with the drawings, it will be seen that I provide a simple and eticient door operating mechanism, having ower devices for moving the door, which 1s capable of being detached to permit movements of the door by hand, when desired, and wherein the power devices are permitted to follow up the manual movements of the door, and to again become automatically coupled thereto. lt will also be seen that, when desired, the follow up movement of the power mechanism will be accomplished automatically.

A construction ofdoor operating mechanism possessing the characteristics hereinabove referred to, is applicable for use upon elevated, subway and surface street cars, elevators and the like, where door operating'mechanisms arefemplo ed, and the construction aords special a vantages in the handling of large crowds in entering and leaving the cars, and which crowds are sometimes so great as vto require attendants or guards on the platforms or stations,

or where the closing of the doors by a motor, in case of passengers crowding on the car, might be dangerous andresult in injury or .amage to the passengers. It will be /seen that a structure embodying my invention, enables' the guard on the platform or on the car to close the door easily by hand, thereby avoiding danger of injury t passengers and after the door is closed or nearly closed, the ower mechanism is manipulated so as to ollow. up the door, and fastenit securely in its closed position. .While I have shown and describedspecie structures embodying the principles of vmy invention. my invention, as defined in the claims, isnot to be limited `or restricted to the specific details of structure and ar]- rangements shown. p y

Havinof now set forth the object ,and nature of my invention, anda construction embodying the principles thereof, what' I claim as new and useful, and of my own `invention, and desire to securev by Letters Fatentiszf l i ,1.

l. The combination with power operated devices having detachable engaging connections ada ted to be connected tok a door for moving tie latter in both directions, of means independent of the'power operated devices for moving Athe doorbyhand, independently of the` power operated devices.

2. The combinationwith power operated devices having detachabler engaging connection with a door to move the same,`of`

automatic means for disconnecting the door from its power operating means', and means independent of the power devicesfor moving the door by hand.

8. The combmationlwith4 a door, of power I operated devices forrmoving the same, de-

tachable devices j' for disconnecting the power operateddevices and door, whereby the door may be, moved manually, and

means for automatically causing the power devices to follow up the manual movements of the door. j v

4. The combination with la door, of power operated devices for moving the same,V

means for automaticallyAV disconnecting the power devices from the door when the door is in its opened position, whereby the door may be moved manuallytoward closed position, and means for automatically coulpling the power-devices and door.

5. The combination with a door, of power devices for moving the same, means for disconnecting the power devices from the door, whereby the door movements lmay beeffected manually, means for causing the powerv f devices to follow up the manually operated door movements, said means operating to automatically connect the power devices and door.

ioo

ilo

6. The combination with a door, cfa cq.

power cylinder and piston, gearing actuated y said piston for moving the door,` and means for detachably connecting said gearing and door` when the latter is in opened` posit-ion.

7 The combination with ardoor, of an;V

operating lever therefor, power `devices for moving said lever, and means lfor detach,-

ably connecting said power devices :and lever.

,8. The combination with a door, of an operating lever therefor, a vrocking arm, said lever and arm being mounted for independent movement, said arm arranged to engage said lever to be mov'ed'in one direction, a pawl to lock said arm andj lever, whensaid arm 1s moved m the other direction, power devices for rocking said arm, and means for automatically disconnecting said pawl.

9. The combination with a door, of an operating lever therefor, a power driven arm arranged to engage said lever to move the same in one diretcion, and a detachable pawl larranged to engage the lever to move the same in the other direction,and means for automatically releasing said pawl when the door is in its opened position.

10. The combination with a door, of an operating lever therefor, a movable arm arranged to engage said lever to move the door toward closed position, a pawl arranged to engage said lever to move the same in the opposite direction to open the door, power devices for moving said arm, and means for automatically detaching said pawl when the door is in its completely` opened position.

11. The combination with a door, of an operating lever therefor, a movable arm arranged to engage said lever, to move the same int-0 a direction to close the door, a detachable pawl to engage the lever to move the door toward opened position, power devices for moving said arm, means for automatically detaching said pawl when the door is in its opened position, whereby the door may be moved manually and inde, pendently of the power devices, and means `for moving said arm and pawl into engaginto Aopened or closed position, power operated devices for movingsaid lever, including a movable arm, said arm being mounted for independent movement for connecting and disconnecting said arm and lever.

14. The combination with a door, of an' operating lever therefor, a power driven arm mounted independently with reference to said lever, detachable connections between said arm and lever, such parts being disconnected automatically when the door is'in opened position, whereby the door may be moved manually, independently of the power driven arm, and means for causing said arm to follow up the door movements .and automatically engage said lever.

15. The combination with a door, of a power cylinder having a piston, a rack operated thereby, a gear operated by said rack, an arm connected to said gear to move therewith, an independently mounted door operating lever arranged to be engaged by said arm when the latter is moved 1n one direction, a pawl carried by said arm, and engaging said lever to move the same in the other direction, and a stop to automatically disengage said pawl when the door is inv its opened position.

16. The combination with a door, of an operating lever therefor, a power driven arm, said arm andY lever being mounted for independent movement, said arm arranged` to engage said lever to move the same in one direction, a pawl carried by said arm and arranged to engage said lever in another direction, a stop to automatically disengage said pawl when the lever is in one limit of its movement, whereby the door and its operating lever may be operated independently of the power driven arm, and' means operated by the independent movement of said lever to cause said arm to follow up said lever and automatically engage and lockl with the same.

In testimony whereof I have hereunto set my hand in the presence of the subscribing witnesses, on this fourth' day Vof September PARIS R. =FORMAN. Witnesses:

E. REiLLY, FRANK JOHNSON.

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

Washington, D. C.

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