US1872803A - Elevator car guide - Google Patents

Description

Aug. 23, 1932. L. G. PERssoN ELEVVATOR GAR GUIDE Filed Feb, 14, 1930 iNvi-:N'TOR of@ my.. ,my ATTORNEY 'A Patented Aug. 23, 1932 i" UNITED STATES.

llrx'rENT fo-FVFI'cI;rl i

LABS Gorman; PEnssomoF N EW YORK, N. Y., AssIGnon. To n.3. sEnnLnvAfroR .CoM-

. y rANY, INC., A CORPORATION or DELAWARE, f

VELEVATOR CAR GUIDEV Application inea February 14, i930. serial No. 42,8,so4iff Y *This invention provides means vvhich Will positively prevent the frame of an elevatorA car from becoming deformed and allowing the guide shoes and safety device on one side to leave the guide rail, the tendency to do which occurs, for example, When a car is much more heavily loaded on one side than it is on the other and the safety devices are caused to operate. When a car is largely or Wholly loaded on one side of the center line and an accident occurs which places the car out of control so that it acquires a speed which calls the safety devices into play, the unbalanced condition requires a stronger retarding force on the heavily loaded side than on the lightly loaded side, and since the safety devices are constructed to hold equally on-each side, the cross members of the car frame tend topivot on the side of the car that is lightly loaded with theresult that if. this tendency is great enough theheavily loaded side of the car swings off the guide rail altogether.

Bythis invention, I provide means which cooperate with the head of the rail to prevent 3 such a contingency.

The. invention is conveniently applied with the type of lguide rail which is coming more generally into use, namely, one having an enlarged head joined to the base by a Web and having a general resemblance to the rails employed on railroads.

Upon the vertical side frame members of the car, usually though not necessarily, for their full length,I provide an angle member which extends behind the head of the guide rail.y .r Preferably, there Will be two opposed angle l tion by the ltendency of the cross frame members to pivot about their lightly loaded ends. As long as the car is running under control the flanges of the angle members are out of contact with the heads ofthe rails and do not come into play. It is only when the car is brought to the sudden stop occasioned by ther safetyfdevices and there is a suliicie'nt lack of balance in the loading of the carto cause the car frameV to Warp sufficiently to bring the flanges on the heavily loaded side againstthe' rear of the railhead, that these angle mem-V bers function and prevent thefsafety-,devices on `that sideV from leaving the'rail altogether.

It is apparent that such angle irons have suliicient inherent strength for the purpose. Specifically I prefer lto apply these angle irons to the side frame members of the car by attaching 'them to the flanges of'. an extra channel member which is secured to the outer face of each side frame member. This chan-` nel member serves as an extra reinforcement' to'the'sideframe members and affords them the'requisite strength to sustain-his load When the angle members are called into'play topre#y vent the side `of the car from leaving the rail.l The construction is such that they may loeJ the full length of the heightof the car and their length Will prevent their becoming overheated from the friction when they'engage the railhead. i l

I shall novv describe the illustratedem-l bodiment ofV my invention"` and shall there- Y after point out my invention inclaimsr.

Fig. l is an elevation of the frame of an elevator car in an elevator hatchvvay;

Fig. 2 is a section on the line 2-2 of Fig-l Fig. 3 is a longitudinal side elevation of the p same; and y n y y y Fig. 4 is an enlarged section of a guide rail and the cooperating members'on the side 'of the elevator car. A

In the construction illustrated y Vin. thel drawing,l there isshoWn theframe l ofan ele.-

vator car, the details of the car beingomitted for the sake of simplicity and the clearer illustration of the features of the invention'.y The car is shown in an elevator hatchway To opposite sides of the hatchvvay, there are secured guide rails 3. The guide rails consist of a base or flangea Which is adapted to be secured to the side of the hatchvvay,a vveb4 5 extending perpendicularlyfrom the base l, and an enlarged head portion-6L The guide rails' run longitudinally Vof the h'atch'vvayl from from top to bottom and are adapted to guide the elevator in the shaft.

Gn the elevator car, secured to the upper and lower cross beams adjacent the guide rails l, there are elevator guide shoes 7 of the usual; type'.y The shoes engagethe enlargedy head portion of the guide rails on three sides thereof to restrainmovement of the elevator car with respect to the guide rails mal operation of the elevator by the guide rail on the opposite side of. the hatchway and its cooperatingguide shoe. -If the car is loaded out kof balance and the carruns away so4 that the safetydevices operate, additionalv means are provided to prevent the heavily 'A loaded side 'from leaving the rail.

In the Y construction shownthese additional means are: on the outer face ofthe channel shape members 8 whichgconstitute the. side frame member-sof the elevator car and extend the entire heightV of the car.V To the outerA face of each member 8, between the flanges thereof, is secured a secondand' narrower f channel shape member 9. Theflanges of the channel shape member 9 extend laterally from'the side of the car on either side of the l enlarged head portion 6 of the guide rail.

Toeach of theflanges l0 of the channel shape member 9,l there is secured an .angle memberl having anges 1l and 12, the flange ll being secured to the member 10, and` the langelQ extending, around theen'larged head of the guide rail in-close proximity to the web of theguide rail. Y l Y y In the illustrated construction, the channel members 9 and theangle members secured to the vflanges thereof extend the entire heightr of the car; It is to be understood, however, that the length of these members need only lhe such as toidistribute the forces exerted'thereon over Y a suiiicient area to maintain the safety devices iii-engagement with the guide rails, and also, to provide sufficient engaging area so that heat generated by frictional engagement b etween these members and the guide railswill Anot cause the fusing of the members to the guide rail. n y

From the above description of the illus-y trated embodimentof my invention, it will be apparent that the safety devices will b e held positively'to the guide rails on each side of the car irrespective of the `condition ofr load ing of the car and a possible difference 1n the momentum of the two sides of the car wheny the safety devices operate. s It is obvious thatv various changes may be made in the'embodiment illustrated in the drawing and'v above particularlydescribed' within the principle and scope of my invention as expressed inthe appended claims.,`

Lat-eral` movement of thel Aface' engagingover Y the adja-c'ent'iside frail,

and-vertical anglemembers on the side frame members of the car between the guide shoes extending behind the enlarged head of the adjacent 4guide rail and the guide shoes acting to maintain the angle members out of contact with .thehead but in close proximity thereto'. -l l 2. In an elevator car, incombination withvertical .guide rails disposed on opposite sides of a hatchway and having each an'enlarged-y l guide head, the'fra-me of the'car, and'opposedf' vertical angle members oniopposite side. frame members of the cark extending substantially? the full length ofthe frame members, thegop-.l posed'fianges ofthe members on each side runningbehindthe enlarged head of the adj acentrail out of contactvwith the'head vbutin closeV proximity thereto.V l ,Y i f 3; Inan elevator car, in combination with vertical guide railsy disposed onopposite sides of a hatchwayv and having. eachan'enlarged guide head, the framegof thecar, afvertical channel member secured tolthe sid-e framey member on'eachzsi'deofthe car in opposition tothe respective. guide rail, andv two'fanglef members secured tothe "flangesof each channel member, the twozangle members oneach side havingtheir outeriianges extending-'inwardly immediately behind thefenlargedraili, andzspaced toreceive'the webof the guiderailbetween them. f 1

4. In :an elevatorcar, in combination: with vertical .guide rails disposed on opp'ositesides; of ahatchway and having eachiani enlargedi` guide head', the frame .-oft-he car, a vertical; channelY member v secured to the.; side.: .frame memberon each side of: the'carJ ofsubstanf tially the length of the side frame memberY and disposed in opposition' tothe respective; guide rail, and two angle members/secured" tothe flanges. of each channel member-,andE substantially corresonding thereto in: length,. the two vangle members on each side-*havingv their outer flanges extending inwardlyimme diately behindV and out of Contact` with the e Lans Gorrrnin ile-nassen.'

I hereunto:- subscribe;

tao

Images