USRE13978E - hulme - Google Patents

Description

J. W. HULME.

UTOMATlC SAFETY LOCK FOR DUORS. APPLICATION FILED APR,5.1.912.

BessuedSept. 14, 1915.

A m Y /W/WW/'WW/W//W To all whom it may o o-noem:

.ToHN W. HULME,v oF JERSEY CITY, NEW Jansen, AssIGNon. To consci HEATING COMPANY, CFALBANY, NEW YCRK, A CORPORATION 'or vAUTOMATIC SAFETY-LCCK Fon Doons.

Original No. 990,877, dated May 2, 1911, Serial No. 585,702. Aiiplication forvreissueyfile@-pxiilsti` Serial No. 688,166. .l 5.o

`Be it known that I, JOHN W. HULME, a citizen of the United States, and a resident of Jersey City, New Jersey, have invented certain new 'and useful Improvements in Automatic Safety-Locks for Doors, of which the following is a specification accompanied by drawings.

This invention' relates to automatic safety locks for doors, but more particularly` to locks for sliding cardoors, although the invention may be used with any type of door` to which it is ap licable.

The objects o the invention are to improve upon automaticsafety locks for doors, simplify the construction with as few parts as' possible, increase the eiliciency and certainty of operation, and prevent the parts .from getting out of order, 20

Another object of he invention is toenable the device to be operated from la distant part of the car, .or from thesaxne location at which the door operating mechanism .is controlled.-

To `these ends the invention consists of a device" embodying the `combil'mtio'ns of elements and arrangement o f parts substan tially as hereinafter fully described and claimed'in this specification and shown in the 'accompanying drawings, in which! Figure 1'i's a longgitudi'nal elevation partly in section, of the door locking device. Fig,

2 is a diagrammatic plan view partly in section and partly 'brokenaway showing one end of acar with the door operating and door locking devices and electrical and pneumatic connections, and Fig. 3 is a side ele# vation, partly broken away, of C'neend of` Referring to the drawings, A re resents the side of the car body, B the 'en of the car, and C lthe step. The 'door D is adapted to slide back and forthl across the car entrance.

T he invention is shown in this instance, by way ofillustratiom in connection 4with a side end door, but it is to be understood as applicable' to the. center side doors as. well. For a side .end door as shown, the `door operating mechanism is preferably located beneathel seat adjacent thedoonand this specification of Reissued Letters Patent. Reisslil Se controlling the air 'connectionsto 'thai cy .withdrawn to permit -thedoerit weils o' i 1 i,if'isrnrrm mechanism may consistofsangrtsuitalilel.devices, Il havino` shown "asifanaexamplecelectrically control vices. conveniently operated by .'airpressu'e taken led pneumatic fopeatig'gide- My automatic safetykolocliimay .be 5

from any suitable portion of ttiewair .supply line of the car and mayebezcontifblledizeles trically from the most Vconv-enienteleotrlimall source. 1 iwf( M i A My invention may' bez applied ato. l however operated, whether v nechanic-a pneumatically, or electrop'neimaticfllyzmif Referrmg to the typeofgdeonioperating mechanism illustrated irr'tfthe sdrawin ,iE

and F represent cylinders, thiefpistbnsm land H of which are connected'byi alcommnipis.- ton rod J provided withafraekiK "iPivoted at L above the rack Kis ai-lexvfer` Mohaiiing one end provided with.=a .itoothe N meshing with the rackKaheinthenend pivote'd to a slide O movahlcron attheback of the door D; firm:-

- n ."M The air supply line Q sconnecteditrx ide yg valve casing R, which casiiigiinturrr-i-s.connected by pipes. S and T withftheg'zeylindrs E and The casingRfis'providdswfiththe exhaust ports 'a andthe slidey valirefU linders. This valve U isgicontroll tls-:by th solenoid; c and d, thefco connected to the valvei As shown in this instance, therci'reuitsi negada?.

the solenoids @and d include. la suitable.: three :Af

ypoint or reversin switch nnectedftoa suitable source o supply."asiaffbatteryfnw,

thenfgftive pole of which may benennen'- I connected to solenoid` andgth-'ey otheraztp solenoid d and a common returnwirej )leads to ground. -B`y operatingfthehswitchimetile ycontrolling valve U is movedinutheidesired direction td control the operatiomofthreicyl indersE and F and openlor close tliexdoor 5.

In 'accordance with thisinventiomimeens are provided forV automatically Hocking 'the door closed, and for automatiallyineleasing loseda A suitable forni of mechanism 'for operating* and controlling this stop is shown as a cylnected by pipe le with the air supply line Q which in this case operates the door l), for a' reason hereinafter to appear. 'lhel piston i, should preferably lit the cylinder g loosely to allow leakage or should otherwise be constructed to allow leakage, as by ineens oi a leaky hole, the amount of leakage depending upon the time required to operate the. door. Behind the piston is placed a coiled spring m of sufficient strength to overcoine the inn ertia of the'pistonv and carry it through its return stroke aided by leakage from the front of the piston. At the rear of the cylinder g is shoivna .valve casing n, havingr an exhaust port o With a narrow valve seat p against which a valve c7 is seated ,by a

light spring r which inay be coiled about the valve spindle s. The upper end zZ' of the valve spindle projects outside of the casing n' n in4 position to be actuated by suitable con trolling devices. Any suitable exhaust valve may be used in place of that disclosed, as a :standard Whistle valve or a balanced valve.

To control the valve g I have shown an electroniagnet u, in this case..connected in series with the controlling solenoids c and al.' although I ain not to be understood as lim iting the invention to this locationoflhe controlling magnet u. Pivoted at on the cylinder vg is a, lever `w bearing on the end v5 of the spindle s, the outer end m of said lever forming the armature for magnet u, so that When said magnet is energized, the armature m is attracted, and valve (j is forced open against the pressure within the cylin-y der g, thus allowing the cylinder .g .to eX haust.' The piston h moves rapidly to the back of ,thecylinden thus retracting or. withdrawing the piston rod j from behind' thedoor D. The piston 7i will return slowly toward the locking position owing to the leakage.

In the operation of the device, let it be assumed that the door D .is closed as shown in Figs. land 2, the switch V is open andv the piston rod j is in lockingposition, with valve g closed. To open the door D the operator moves switch V to energize solenoid. c, Which at the saine time in this instance energizes electro-magnet u, attracting erinture af, and opening valve zj.- The pistonh moves quickly from locking position yto the vend:l of its stroke, eonipiessing spring m.'

The operator holds switch V closed ino-- Vinentarily to be sure the controlling vvalve U has operated, andthen reopens the switch V, denergizing solenoid c and magnet u, so thatlvalve r] is reseated by springv r. Since it will require a few secondsfor the leakage around the piston to substantially equalize the pressure, sui'licient tinie will be aliforded to perniit the door te oi en. 'vilo close the door the switch V is inoved to ener solenoid l and at the saine time magnet u, there by repeating the operations de ibed in connection with the locking device, which is withdrawn aivay freni the door, while the door is closing, and then returns toy locking position behind the door.

Il? for any reason the doorshould fail to operate, due to failure of air or electricity, the .loclr #will not operate and the door will be maintained closed. If' itlshould be desired to operate the door by hand' as in case of accident, a hand operating lever y is provided on the piston rod'j,A .and the door guide e. may be slotted at 2 to perniit the lever y to slide in the guide. Means inay also be provided for controlling an Velectric signal lamp 3 bythe operation of the door lock. As shown in this instance the door guide L recessed at 5 and the end G of thel locking rodj proyects into the recess in Between the closing head 9 and the head 8 of the pin isairangeda spring .l0 normally 4 The pin Z istending to retract the pin 7. provided with a contact il adapted to enter between the spring contacts l2 rnonntef the bracket 13 and close lainp cir the lainp 3, when the door is closed.

I claim and desire to obtain by Letters lgatent the following:

l. ln an automatic safety loch for do rs, the combination with a door vat lo l ng -deiiee, pneumatic devices for operating said door and said lo device suijiplied :troni the saine sup ily la electro-niego etic devices for controlling s door operating and lool; operating devices, and ineens for simultaneously controlling said electro- .uiagnetic`- devices.

Q. .in au L Y toinatic safety loch-for doors, the combination with a door and a lock, of interconnected opera-ting ineans vfor simultaneously and automatically actuating` both the door and the lock, and for preventing the operation of .one Without the other, and .Y interconnected controlling means for siinulM 'forithe lock ope-rating means, and means ,for actuatingsaid controlling devices simiiltaneously.V

4. In an `autematic;safety lock for doors,

the combination with a door and a lock, of

pneumatic means for actuating the door to open and close the same, pneumatic. means for actuating the lock, pneumatic connections ...between said actuating means whereby'the lock is released when the door is opened, and

simuitaneously actuated electro-magnetic icontrcliing devices pneumatic actuatii'ig means for the door and locii.

5..'Inan automatic safety lock for doors, i

they combination with -a door and-a locking device-pneumatic devices for operating said doorand said locking devices, electromagne'ticfdevices 'for controlling said door operating and lool; operating devices, and means magnetic-devices.

for simultaneously controlling said electro- 6. In'an automatic safety vlock for doors,

the'combination withl a door and a' lock therefor, of power .devices for operating said door and lock, and separat-e devices controlling the operation of said` door and :lock power devices, said controllingdegices being actuated from a source of power separate from that for actuating said-door and lock power devices.l

i' 7 In an automatic safety lock forf doors,V

the combination with a door and a lock therefor, of. power devices for operating said door and'lock, separate devices controlling the operation of said door and lock power devices, said controlling devices being actuatedfrom a source-of power separate from that for actuating said door and lock power devices and of a different character.

`8 In an automatic safety'lo'ck for doors, the combination with a door and a lock therefor, 'of power devices for operating said door and lock, separate devices controlling the operation of said door and lock power devices, said controlling devices being actuated from a source of power separate from that for actuating said door and lock lpower devices, and a common means for controlling said controlling devices.

. 9. In an automatic safety lock for doors,

-the 'combination with" a door and a lock therefor, of power vdevices for operating said door and lock, separate devices controlling the operation of -said door? and lock power devices, said controlling ,devices be ing actuated from la source of-p'ower separate from that for actuating saidv door and lock power devices, anda common means for simultaneously controlling said controlling devices.

10. In anl automatic safety lock for doors,

the combination with a d oor and a lock 'ofpower devices for operating said door 'and lock actuated 'by power from the same source, and separate devices controlling the operation of said door and lock 'power devices, said controlling devices being actuated from a source of power separate from that for actuating the-` door and lock power devices. i

11.- In an automaticsaifety lock for doors, thecoinbination with adoor and a lock, of power devices for operating said door and lock actuated by power 'from the same source, and separate devices controlling the operation of said door and lock power devices, and operated from a con'uncn' e'iource 'of power different in character Tfrom the power actuating thedoor and lock pon-*erf devices. 12. In an automatic safety lock the combination with therefor, of power devices for operating said door and locl,'and separate devices controlling th'e operation of said door and lock power devices, said controlling devices being actuated from a source ofpower separate from that for actuating' said door and lock power devices, said lock being provided 'with means whereby the same may-be manually operated.

y 13.111 an automatic locking device for doors, the combination with a door and lock, of operating means for said lock, adapted to be quickly withdrawn fro-'m locking position,

mechanism for causing the operating means to slowly return to locking position, and

'means for controlling said mechanism.

14. In an automatic locking device for doors, the combination with a door and lock, of a fluid pressure cylinder connected to cperate the lock,' provided with means for Aquickly .withdrawing the lock and means carried by the cylinder for causing a slow 'return of the lock to locked position.

15. In an automatic locking device for doors, the combinationwith a door and lock,

a fl-'uid pressure cylinder, a piston and 'piston rod, and means for permitting leakage from onel side of the piston tothe other, to permit a slow return motion of the piston, and meanscarried by the cylinder for permitting pressure to escape therefrom.

16. In an automatic Ilocking device lfor cai doors, the combination with a door, of a motor/.for'opening and closing the door, a controller therefor, an automatic lcclc for the door, and means for restoring the lock to locking engagement with the door in the Vevent of the said motor failing open the door. l

17. In an automatic locking device for car y for doors, .a door and aflocl" doors, thecombination with a, door, of an operating pressure-motor therefor, means for unlocking the door and admitting pressure `to the door motor, and means acting after the admission of pressure .to automatically relock the door in the event of the pressure in the motor vfailing to open 18. In 'an automatic locking device for car doors, the combinationwith a door, of an operating motor therefor, a lock therefor, independent devices for releasing thev lock and admitting, power to the inet-or, and retarded restoring vmeans for'the lock perinitting the action 4of the said motor between the releasing and the restoring of thev lock. 19. In an automatic locking device 'for doors, the combination With a door and operating. means therefor, ofA a lock, matic unlocking and relooking devices so tiined WithA respectl to each other'astrnpern iiit the said operating means to act on the oor.

E20. A11-automatic locking device for doors,

comprising a fluid pressure cylinder, a pis ton and piston rod, fluid pressure 'connections at one side ot the piston, a spring at and autofor per the other side` of the piston', means and an initting leakage around the piston.q automatic valve for relieving the pi "sure 21. An automatic locking dei'fce i" r doors, comprising a cylinder and pistonj duid pressure connections at one sideo the piston, and an automatic Valve at the piston, means for permitting leakage from one side of the piston to the other' and a spring adapted to return the piston after its initial stroke.

ln Witness whereof l have hereunto set my hand., before two subscribing witnesses, this 22d day of li'arch, 1912.

" Y .JOHN ifi/ HULME.

Witnesses:

I HERBERT G'. Osman, HENRY SiiELDoN- the other 'side of

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