US1899751A - Elevator guide - Google Patents

Description

Feb. 28, 1933.

J. DUNLOP ELEVATOR GUIDE Filed Dec. 20, 1929 INVENTOR Jd 77 76'5 Dunlap.

ATTORNEY Patented Feb- 28, 1933 JAMES DUNLOP, or PARK RID E, rntmors, ASSIGNOR ELEVATOR COMBANY,A-CQR-PORATION T0 WESTINGHOUSE, ELEC RIC oi nnrnors W ELEVATOR GUIDE Application filed December 20, 1929'. Serial No. 415,457.

My invention relates to fastening means for guide shoes and has particular reference to guide-shoemountings for elevators.

At the present time, elevator guide shoes are rigidly fastened to the elevator in such manner that any shocks or vibration, caused by inaccuracies in, or misalignment of, the guide rails is readily transmitted to the elevator cab, to the annoyance of the operator and passengers. The rails may become misaligned at the joints between the sections, causing a slight jolt as the shoes pass from one section to another or they may warp, causing the car to sway while in motion, thus narrowing the distance between the car and fixed objects, such as door treads, rigidly fastened in the hatchway, making it possible for the car to strike these objects whilein motion.

Instances are known where the distance between the respective rails becomes narrower at some points in the hatchway than at others, due to the settling of the building, causing the car to slacken its speed while passing these points or become wedged altogether between the rails.

No provision is now made for absorption of shock and vibrations or misalignmentof the rails due to any of the above enumerated causes.

the provision of a non-metallic connection between the car and the guide shoes.

My invention will be described with reference to the accompanying drawing wherein Fig. 1 is an elevational view of a conventional-type elevator cab and sling showing. the guide shoes attached to the car by means of my guide-shoe fastening device.

Fig. 2 is a detail perspective view of one of the guide shoesembodying my fastening device.

Fig. 3 is a side view, partly in cross-section,

the car.

HIV-III of Fig. 2.

of my fastening device, taken onthe line Referring now. to t-hedrawing'in detail, I

. have illustrated, in Fig. 1, an elevator cab 1 attached to a conventional-type sling having,

heads are'aflixed brackets'3,securely fastened thereto by means ofbolts't and nuts 5, these Guide-rail shoes 9 have lateral extensions 10, which, when a shoe is in its operativeposition, engages the projecting boss 6 upon The cross-sectional diameter of the shoe projection being-smaller than the internal diameter of the tube like boss 6, it fits looselywithin the tube. Between this projection on the shoe and the projecting boss, I provide shock-absorbing acoustic insulatingmaterial 11, such as or hose, to prevent contact between the metal parts of the shoe and boss and to make the connection between them flexible. It will be understood that the shoe extensiomaften as by welding 7, i I and extendmg toward the guide rails 8. I

a rubber tube being surrounded by the shook-absorbing material, snugly fitswithin the boss.

In order to'strengthen the connection, a

similar shock-absorbing means 12, or rubber proj ecting tube, is disposed snugly overf'the outside of pro ecting boss and an enlargement -13 the formed upon the shoe projection. A cushion 14 of disposed within the hollow boss 6 and the end of the extension 10 upon the guide shoe 9- to cushionthe lateral movement of the guide shoe, Wit-h thisconstruction, there: is no contact between the metal parts of the elevator cab and the guide shoe.-

The operation, ofmy device is as follows;

if the earl is in motion and there should'be ment of the guide rail shoes9 in passing from one section of the rail to the: other, thus causingthe rubber-hoses 1 1 and 12 to shock-absorbing material may be 55 at the top and bottom thereof, channel-iron cross heads 2. Tothe channel-iron crossa projecting boss 6 amisalignment between the sections of the v rails'8'or manufacturing dcfectsin therail itself, this would causeqa horizontal moveflex horizontally and absorb the click and any vibration attending the movement of the shoe over the joints of the rail sections.

If the rails should move with relation to each other, in such manner that they would no longer be parallel, thus causing the dis tance between them to be narrower at some point in the hatchwayvthan shoes would tend to flex vertically, as Wellas slightly compress the rubber tube as the car passes this point, thus compensating for the variance in without affecting the speed of the car'in any manner. The same operation of the shoes would ensue should the rails become warped as the shoes would flex, thus reducing the swaying effect of the cab when passing over the warped sections of the rails.

All vibration, caused by faulty rails being thus absorbed or compensated for, will necessarily not be transmitted to the elevator cab. It may also be seen that the flexing of the shoes, causing them-to follow the alignment or contour of the rails, will preventiirregular wear at any point on both the rails and,

shoes. By using a vibration-absorbing means for connecting the shoes to the car, a quietly running elevator will result, no vibrations due to faulty rails within the hatch- =way being transmitted to the car. 7 itwill be understood V flexible, non-metallic From the foregoing, that I have provided a connection between the guide-rail shoes and the elevator cab which will enable the shoes to follow the rails under all conditions, which acts as a shock absorber and provides a quietlv-running elevator car.

of my invention, I do not wish to be limited fto the specific structure illustrated, as various modificationsmay be'made within the concentric relations. v

2. An elevator car, a guide rail, a guide shoe for engaging said rail, lateral extensions on said car and on said shoes, the adjacent ends of said extensions being spaced and overlapping, and vibration-absorbing means of yieldable acoustic insulating material be tween said overlapping extensions toprovlde a connection therebetween.

8. A car, guide rails for said car, guide tween. said extensions.

at others, the

the distance between the rails Although I have shownthe preferred form non-metallic member inter- -posed between the adjacent lateral. exten sions, whereby they are maintained in spaced.

shoes for engaging said rails, lateral extensions on said car and on said shoes, one

of said extensions being telescoped within the other extension and spaced therefrom, and yieldable acoustic insulating means be- 4. In combination, an elevator guide shoe havlng a laterally extending portion, a support therefor comprising a bracket, a tubular portion extending laterally therefrom and adapted to telescopically receive the projecvtion extending from the guide shoe, a nonmetallic cushion member within the tubular extension, and, a yieldable non-metallic tubular member sli-dably received on the guideshoe extension to. support the extensions in spaced relation, whereby there is no directmetallic connection between theguide shoe.

and the bracket.

In testimony whereof, I have hereunto subscribed myv name this 4th day of Dec,

JAMES DuNLor.

Images