US524979A - Safety - Google Patents

Description

(No Model.) ZSheets-Sheet 1. M. C; PULLENLOVE. SAFETY APPLIANGB POR BLEVAYTURS. No. 524,979. Patented Aug. 21, 1894.

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` SAFETY APPLI-ANGE'POR BLBVATURS. No. 524,979.

Patented Aug'. 21,1894.

ps www lUNITED STATES MCCLELLAND C. FULLENLOVE, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE- HALF TO JOHN C. COSGROVE, OF SAME PLACE.

SAFETY APPLIANCEA FOR- ELEVATORSL.

SPECIFICATION forming part of Letters Patent No. 594,979, dated August 21, 1894. Application filed November 2,1 893. Serial No. 489.739- (NO model-l To a/ZZ whom it may concern.-

Be it known that I, MCCLELLAND C. FUL- TJENLOVE, a citizen of the United States, resid- 4ing at Chicago, Cook county,Illinois, have in- .ventedvcertain new and useful Improvements 1n Safety Appliances for Elevators, of which I do declare the. following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

In the running kof elevators it often happens that the operator neglects to close the door or gate before the elevator car is started 1n upward or downward direction and as passengers attempt to get upon the elevator car while in motion there is danger of their belng caught between the car and the floors past which the car is moving. This failure of the operator to close the doors or gates of the elevator shaft before starting the car is one of the most frequent causes of accidents -V in this class of apparatus, and the object of my present invention is to provide improved means whereby the movement of the elevator car either in upward or downward direction shall be checked until the door or gate opposite which the car has stopped, is closed. This object of invention I have accomplished by the novel mechanism hereinafter described, illustrated in the accompanying drawings and particularly defined in the several claims at the end of this specification.

Figure l is a view in vertical section through an elevator shaft, having my invention applied thereto. Fig. 2is an enlarged perspective view looking fromthe shaft out-v ward and showing the lower part of the elevator gate or door and partof the adjacent` shaft inclosure, and showing also the means located adjacent the door for controlling the dogging mechanism that checks the moving of the elevator car when the door is open. Fig. 3 is a view similar to Fig. 2 but showing the door partially open. Fig. 4 is a view in vertical section through the bottom of the elevator car and the dogging mechanism affixed thereto andthrough the shiftingmechanism located adjacent the door way for controlling said dogging mechanism. Fig. 5 is a detail perspective view of one form of dogging mechanism carried by the elevator car.

Fig. 6 is a View in horizontal section on line 6--6 of Fig. 4f. Fig. 7 isa detail perspective view of one of the shoes with which the jaws `of the dogging mechanism are furnished. Fig. S is a vlew 1n central vertical section through one of the jaws of the dogging mechanism shown in Figs. l-6. Fig. 9 is a view in vertical section through an elevator and partof'its shaft showing a modified form of my invention as applied to the controlling of the elevator cars, the starting and stopping of which is effected by a hand lever. Fig. l0` is a view in horizontal sectionon line l0-10 of Fig. 9.

In the form of mv invention illustrated in Figs. l--8 of the drawings my invention is shown as applied to that class of elevators in which the starting and stopping of the elevator is effected by means of an operators cable that extends vertically through the car, and in Figs. 9 and l0 my invention is shown as applied to another familiar type of elevators in which the startingand stoppingV of the car is effected by a hand lever within convenient reach of the operator. It will be seen, however, that my invention is not restricted to the particular type of mechanism whereby the movement of the elevator car is effected. A

A designates the shaft of the elevator that extends through the several doors A of the building, and B denotes the elevator car that is raised and lowered by the usual cable b. j

C designates the operators cable that extends through the elevator car B and serves to eect the stopping and starting of the car ina manner well understood by those familiar with/that class of apparatus.

The shaft of the elevator A` is provided with the usual inclosure D, this inclosure being furnished at each floor with a door D through which passengers may pass to and from the elevator car B; this door D being sustained in a manner free to slide back and forth as well understood. Beneath the bottom of the elevator car B` is mounted the dogging mechanf ism that serves to check the operators cable C, or other means whereby the starting and stopping of the car is effected. In the form of my invention illustrated in Figs. l-S of ths drawings this flogging mechanism com- IOO vshoes e4'.

prises jaws E and E pivoted together by a bolt e'that depends from and is fixed` to a plate e attached to the bottom of the elevator car adjacent its edge, and from this plate e depends a strap eE-that extends beneath the (logging mechanism and serves to hold the same against displacement. The jaws E and E are provided with arms E2 and E3, the outer ends of which carry the vertical plates or eX- tensions F and F that extend at the side of the elevator for some distance above and below its floor. A springjl may be used to hold jaws E and E normally apart; The dogging mechanism is located upon the bottom of the elevator car at such point that its jaws will serve as a clutch to engage the operators cable C and preferablythe jaws of the dogging mechanism are each provided with the shoes e4 having curved ribs e5 to enter the spaces between the strandsof the cable in order to more firmly hold the cable. Preferably also the shoes e4 are pivotally connected to the jaws by a bolt e6 that passes through an extension e7 formed on the back of each of the The purpose lof thus providing the jawsof tlie dogging mechanism with pivoted shoes is to enable this mechanism to more certainly hold the 'cable and it is obvious thatl ifthe` jaws be caused to bear against the cable C and the operator within the car attempts to move the cable in either direction, the shoes e4' turning upon their pivot point-will tend to more lirm'ly bind and hold the cable.

AUpon each of the floors A', or at other adjacent points of the elevator shaft is mounted the" shifting mechanism whereby the doggng mechanism will be brought into operation to' checlithe operators cable when the door or gate of the elevator car isv in open position. This shifting mechanism, or shifter, in the preferred form of my invention consists of an arm or plate G vthat is mounted upon a short shaft g journaled within a fixed bracket g', the opposite end of the shaft g being pro# vided with an arm or extension H adapted to be operated by the door D of the elevator car. v The door D is preferably furnished with an arm or plate d that serves tov engage the arm H and restore it to position when the door is closed'. The shifter is so located that when the door Dis in closed position the arm or plate G will not affect the movement of the' plates or extensions F and F of the dogging mechanism, as` these plates have curved ends and are at such distances/apart as tok freely pass the arm or pla-te Gr when the latter is in the vertical position shown in Fig. 2 of the drawings. It will'be seen, however, that when the car B is brought opposite aflo'or A of the shaft the arm or plate G will at such time be between the plates or extensions F and F of the dogging mechanism, and if now the door D" be opened by moving it in the direction of the arrow Fig. 2, the bottom of the door will contact with and rock backward the arin H of the shifter, thereby turning the shifter to the position shown in Fig. V3 of the drawings.V When the shifter is thus turned to the position shown in Fig. 3, the arm or plate G will spread apart the plates or extensions F and F of the clogging mechanism and will thereby cause the jaws E and E of this mechanism to firmly grip the operators cable C. and it is manifest that so long as the door D remains open the operators cable will be thus held against movement, and it will be impossible for the operator to start the elevator cai'. When, however, the door D is closed, the arm or plated at the bottom of the door (see Figs. 2 and 3), willV contact with the arm H and restore the shifter to the position seen in Fig. l, thereby releasing the plates or extensions F and F of the dogging mechanism and thus relieve -the operatorsi'cable C from the jaws E and E. y n

It is manifest that the details of construction above set out may be varied within wide limits without departing from the spirit of my invention and that my invention may be applied to the various types of apparatus commonly employed for effecting the starting and stopping of the elevator cars. Thus for example, in Figs. 9 and 10 of the drawings I have shown a modification of my inventio'n adapted for use'in' connection with that type' of elevators in which a hand lever is employed for effecting the starting and stopping of the elevafor oai". elevators, it is customary tojinoiint beneath in this typeof.

the door of the car B, a rock shaft K carry-j ing arms lo to the ends of which are attached sections ofthe operato'rs cable C.

The rock shaft Kis furnished with a bevel pinion k" with which engages a like pinion k2 mounted upon a shaft k3 conveniently journaled beneath the door of the elevator. car: To the shaft los is attached a hand lever M, the grip-handle m of which extends toa point withinV convenient reach of the operator as' well understood. In order to arrest the move"- m-ent of 'the hand lever M solong as vthe door of the elevator car is open,'I mount upo'n the elevator a flogging mechanism coi'np'rising al movable jaw P, the ends-of which are pro'- vided with the angular slots p within which enter the studs r of the arms- R that are pivoted as at fr. The' opposite end of these pivoted arms R extend outside the elevator car and are furnished with the plates orV extensions F and F similar to the plates or extensions hereinbefore described, and arranged to be operated by a shifter such as that hereinb'efore described. This shifter consists of a plate or bar G fixed to one endof the shaft vided with an arm H extending into position to be operated by the door D of the eleva-tor, a plate or bar d serving to restore the arm H l to normal position when the door D is closed. j' In order to enable the jaw P to' more' effectf ively check the movement of the hand lever i M, I prefer to formthe face of this' jaw with serrations, and to provide similar serrations IIO ` other.

seen that when the elevator car B has been brought opposite the door-way and the door D thereof has been opened, the shifter, being at such time between the plates F and F will spread these plates thereby causing the arms R to rock about their pivot points so as to move the pins fr'of these arms toward each This movement of the pins r along the incline slotsp of the jaw P will force inward this jaw, causing its serrated face to bear against the hand lever M thereby locking the lever against movement until the door of the elevator has been closed and the hifter has been restored to its normal posiion.

It will thus be seen that by means of my invention the elevator car must remain at rest until the door opposite which it has been stopped is in closed position,` and consequently all danger of injury to passengers by getting on and olf the elevator car while it is in motion is avoided. I do not wish my invention to be understood as restricted to the details of construction above set out since these may be varied within wide limits without departing from the spirit of the invention.

Having thus described the invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with an elevator shaft, a gate for closing a door-,way of said shaft, an elevator car and mechanism for starting and stopping said car, of a clutch carried by the car for checking said starting and stopping` mechanism, pivoted arms arranged outside the car for operating said clutch, and a shifter ixedin the hatchway and extending into po sition to engage said arms and having a part extending into position to be engaged by said gate. i,

2. The combination with an elevator shaft, a gate for closing a door-way of said shaft, an elevator car and mechanism forstarting and stopping said car, of dogging mechanism for checking said starting and stopping mechan-A ism comprising a clutch having at least one movable jaw, pivotally sustained plates arranged outside the car but carried thereby for operating said jaw, a shifter for engaging said plates, said shifter being fixed in the hatchway and having an arm extending into position to be operated by the gate.

3. The combination with an elevator shaft, a gate for closing a door-way of said shaft, an

elevator car and mechanism for starting and stopping said car, of dogging mechanism for checking said starting and stopping mechanism comprising a clutch carried by the car for engaging said starting and stopping mechanism, pivotally sustained elongated plates F and F connected with said clutch and a shifter fixed in the hatchway and having a pivoted arm or plate F arranged in position to engage said pivotallysustained plates F and F', and having an arm II arranged to be operated by the door.

4. The combination with an elevator shaft, a gate for closing a door-way of said shaft, au elevator car and mechanism for starting and stopping said car, of dogging mechanism for checking said starting and stopping mechanism comprising a clutch carried by the car and a shifter for operating said clutch comprising a pivoted arm G, fixed in the hatchway, an armor extension H arranged in position to be operated by the door and an extension or plate d connected to the door for engaging said arm H.

5. The combination with an elevator shaft, a gate for closing a door-way of said shaft, an elevator car and mechanism for starting and stopping said car, of dogging mechanism for checkin g said starting and stopping mechanis'm comprising a clutch, pivoted arms for operating said clutch, said armsbeing provided with vertical plates F and F and a shifter for bringing said clutch into operation, comprising a pivoted arm G fixed in the elevator shaft and between the paths of travel of the plates F and F and an arm or extension H connected to said arm G and arranged in poroo sition to be engaged by said gate.

6. The combination with an elevator shaft, a gate for closing a door-way of said shaft, an elevator car and mechanism for starting and stopping said car, of dogging mechanism for [o5 checking said starting and stopping mechanism comprising pivoted jaws having ribs e5 arranged to enter between the strands of the cable, and a suitable shifter for engaging said dogging mechanism, said shifter being lo- [1o cated in position to be operated by the door.-

7. The combination with an elevator shaft, a gate for closing a door-Way of said shaft, an elevator car and mechanism for stai-ting and, stopping said car, of dogging mechanism for I I5 checking said starting and stoppingmechanism comprising a clutch having pivoted jaws provided with shoes pivotally mounted therein, and a shifter for operating said jaws, said shifter being arranged in position to be oper- 12o ated by said gate. i

McoLnL-LAND c. FULLENLovE.

Witnesses:

FRED GERLACK, GEO. P. FISHER, J r.

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