US1570813A

US1570813A - Safety device for elevators

Info

Publication number: US1570813A
Application number: US658339A
Authority: US
Inventors: Wilson Peter
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-08-20
Filing date: 1923-08-20
Publication date: 1926-01-26
Anticipated expiration: 1943-01-26

Description

Jan. 26 1926.

P. WILSON SAFETY DEVICE FOR ELEVATORS Filed August; 20 1923 W/hesses IN VEN TOR.

Patented Jan. 26, 1926 UNITED STATES PETER WILSON, OF SPRINGFIELD, ILLINOIS.

SAFETY nnvion Fort ELEVATORS. I

Application filed nu ustzo, i923. Serial No. e5 s,'s-39.

To all whom it may concern vators, s'uchas passenger elevators used ii-'1" office buildings and the like, or in connection with cages used for hoisting coal, etc;

The purposes of this invention are; First, to provide an economical and simple means of providing protection for lift' elevators that'will be reliable and really safe. I

' A further object of my invention is' to provide a device for the purpose -mentioned that will be easy to keep in repair and easily and quickly repaired when occasion demands it. i

A further object of my invention isto provide a device of the character hereinaff ter mentioned that'is adapted -to work in all cases without fail.

The particular merit in my invention is;

to be found 'in'its simpl'eand easy operation, using the very simplest'mean's possible for getting the most needed and unfailing action in cases of emergency in the event of an elevator cable breaking.

The desired objects of my invention are obtained by the safety device forel'evators described'in the annexed specification recited in the claims and iillustratedin the accompanying drawing in which like reference numerals indicate the samejstructural parts in the several figures; I I

Fig. 1 is'a perspective view o'fthe assembled parts of the safety device of my invention. I I I ,V

Fig. 2 1s a perspect ve view ofa section of the guide rail adapted to act as a guide for the elevator device of my inyention.

Fig. 3 is' a perspective of' the counterweiglited dog adapted to mesli'with stoplugs 3 1011 the vertical guidera-i'l shown in Fig.2. f

Fig. 4 is a perspective of the counterweight which is adapted to assist in drop ping grappling dog 2 intoines'hing relation with stoplugs'3 shown in Fig. 2 in the event of sudden parting of cable supporting an elevator.

Fig. 5 is an end View of the device of my inventionin part-showing the normally re'la of it. .This figure also shows the shapes of thestop-lugs anda section of the steel beam on which. the device of niy invention is mounted.

Fig. 6 is aside view of'the device of my invention in part showingtlie'relative position of the grappling'dog's and the stoplugs w'ith'which it meshes.

Fig. 7 is a top view in part pling .dogs are mounted on thesteel beam of the elevator andsholwing also in the mean? time. the relative position of said grappling dogs With respect to the vertical I alignment Qf the perpendicular guide rail which not only'serlves as a-guide for elevator but also carries integral therewith the stop-lugs or cogs of the part cular design shown which serve as stofp means for'the elevator when n the event of the-suspending .cable'brealrngthe grappling dogs automatically drop intcl aiqu cl: meshing engagement with said race. I I I The'preferred embodiment of my invention'fis' illustrated in the several :figures above ment oned and the desired means :of operat-' ing this device will bev clearly understood by carefully observing. the illustrations. when reading the instructions concerning the operation of-thisdevicez 3 I Y I Aidetailed description therefore of this device will be noted as follows: When it is desiredtoinstall the device of my invention on a lift elevator perspective drawing shown (in -1 will illustrate therelative position ofthe several parts thereof. For

instance, when it is desired to assemble the several parts theengineer will proceed as follows; First, attach brackets 24, three pairs ioffthe same in correspondingv relative positions on each of the two sides of the beam of theelevator. These will be attached, of course .to the vertical planeof the beam as shown. It will be noted that there is one grapJoli-ngv dog on each side of each vertical: guide rail which carries the meshing stop-lugs with'which said grappling dogs are adapted to meshon corresponding op positesides. It will be also noted that there is on the same shaft alignment with said grappling dogs a counterweight in the middleof the space between the two end dogs that are found onthe same side of the elevato'rbeani. It "is tobe here noted that said I tive position ofthe grappling dogs both i when in meshing-engagement and when out" ofth e. 1e; Vice f my invention showinghow the gimp mally operating position.

counterweight is adapted to be suspended from the same supporting ring on which the elevator is supported which ring is attached directly to the cable which supports the elevator.

Character 28 Fig. 4 is a keyed tubular sleeve integral with auxiliary counterweight 6 and adapted to hold said counter-weight in a centrally disposed location on the counter-shaft on which it is supported.

It will be observed that as long as the elevator cable is in good shape the grappling dogs and the counterweights are simultaneously lifted to a rotatively elevated posi tion in which they are held as long as the elevator is being supported by the cable, but in the event of the elevator cable brea ing said grappling dog will quickly rotatively drop to an engaging position with rack lugs 3 on vertical guide rail made integral therewith.

Referring now to the detail parts of the device, numeral 1 is the base of the vertical guide rail which acts as a guide means for an elevator. Numeral 2 is the grappling cogs of the dogs adapted to mesh with the lugs of rack 3 on the vertical guide rail. Numeral 3 shows the lugs of the rack with which grappling dogs mesh in an emergency. Numeral i is the hole in the grappling dog through which

horizontal shafts

7 and 8 pass in mounting said dog into nor Numeral 5 is the counterweight made integral with said grappling dogs. Numeral 6 is also a counterweight made integral with said counterbalance which is adapted to aid in dropping said grappling dogs into meshing engagement with the stop-lugs in emergency.

Numerals

7 and 8 illustrate the correspond ing horizontal oppositely mounted shafts which are supported by brackets 2a which shafts are adapted to serve as supporting means and pivot means for rotatively mounted grappling dogs and center mounted counterweight. Numeral 9 indicates the part of the vertical guide rail which is adapted to come in contact with the guide elements of an elevator. Numerals 10 and 11 and 11 are detail parts of the elevator beam on which the device of my invention is mounted. Numeral 12 is the vertical plate running up and down a shaft serving as supporting means for vertical guide rail above mentioned. Numeral 13 is the partition or walling means for walling up the shaft. Numeral 14 is the bottom plate of the beam structure of the elevator. Numeral 15 is the eye bolt serving as attaching means for the suspending elevator cable. Numeral 16 indicates the position of the rectangular hole in the elevator beam plate through which the meshing cogs of said grappling dogs are adapted to pass when moving into meshing engagement with said vertical stop-lugs. Numeral 17 indicates the flank portion of said vertical guide rail. Numeral 18 indicates the elevator supporting cable. Numeral 19 indicates the ring from which is suspended the several attaching cables which radiate therefrom and attach to the eye bolts of the elevator by which means the elevator is suspended.

Numerals

20 and 21 indicate said attaching cables. Numerals 22 and 23 are correspondingly opposite supporting cables for the rotatively mounted counter-weights and grappling dogs of the device of my invention. It is to be noted that these two corresponding supporting cables just mentioned are also centrally attached at their upper ends to the same ring to which the diverging elevator supporting cables are attached. Numeral 2a indicates the bracket which is adapted to support

horizontal shafts

7 and 8 on which are mounted the grappling dogs and counterweights above mentioned. Numeral 25 indicates the elevator frame work. Numeral 26 indicates the attaching means for connecting the frame work of the elevator to the supporting beam thereof. Numeral 27 indicates the floor of the elevator.

It will be noted in the detail study of the details of my invention that certain minor details in the construction of my invention may be varied in design and still stay within the spirit and scope of my invention.

Having thus described the nature of my invention what I claim as new and useful and desire to secure by Letters Patent 1s- 1. In a safety device for elevators the combination comprising a pair of opposite vertical shaft guides for theelevator; each having a plurality of vertically aligned stoplugs, an elevator beam adapted to be guided by said vertical guidesin the vertical movable support of the elevator, parallel opposite horizontal supporting shafts rotatably mounted through supporting counter shaft brackets; emergency catch dogs in opposite pairs secured to the ends thereof, and adapted to rotate with said rotatable countershaft; auxiliary mounted counter weights secured to and centrally disposed on said rotatable counter shafts and adapted to simultaneously rotate with said rotatable counter shafts by action of gravity in the rotating movement thereof in bringing said emergency catch dogs into emergency engagement with said stop lugs in said elevator guides in the event of accidental parting of the elevator supporting cable.

2. An elevator safety device of the character described comprising a pair of opposite vertical shaft guides for the elevator provided with integral vertical stop-lugs, an elevator supporting beam provided with 0ppositely positioned counter shaft supporting brackets, a pair of horizontal parallel rotatable counter shafts rotatably mounted in said brackets; oppositely mounted rotatable counter-Weighted emergency catch dogs adapted to normallyengage With said vertically aligned stop-lugs by the action of gravitation in the event of an accidental parting of the supporting cable for the elevator; auxiliary centrally disposed counter weights securely mounted on said counter shafts and adapted .to aid in expediting the emergency rotation of said emergency catch dogs as described and for the purpose set forth.

3. In an elevator safety device of the char acter described, the combination with, vertical guide members in the elevator shaft, having integral vertically aligned stop-lugs on opposite side faces thereof, of a cage having opposite sets of counter-balanced emergency catch dogs mounted on bracket supported horizontally parallel opposite counter shafts, adapted to provide simultaneous r0- tatable support of said catch dogs; said rota tably supported emergency catch dogs adapted to be normally suspended in a predetermined position of disengagement With the integral vertically aligned stop-lugs,

during the cable support of said elevator; but adapted to quickly and automatically rotate simultaneously into engagement With said stop-lugs through the agency of graviemergency catch dogs as described and for the purpose set forth.

- In Witness whereof I hereunto set my hand and seal this 13th day ofAugust A. D. 1923:

PETER WILSON. [1,. s.]