US228473A - Elevator - Google Patents

Description

(No Model) I. PAGE.

Elevator.

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N.FETERS, PNOTO LITHOGRAPNER, WASHINGTON. D. 04

PATENT Fr es.

WILLIAM I. PAGE, OF BOSTON, MASSACHUSETTS.

ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 228,473, dated June 8, 1880.

Application filed April 12, ISSO. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM I. PAGE, of Boston, of the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Passenger or Goods Elevators for Buildings 5 and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which- Figure 1 is a vertical section of an elevator provided with my invention. Fig. 2 is an underside view and Fig. 3 a front elevation, of the car of such elevator.

My invention relates to elevators provided with means or mechanism for arresting the downfall of the car in case of breakage of its hoisting rope or ropes or of the belt or any part of the mechanism for effecting the raising of the said car in its well. lVhen such safety mechanism has been applied to the top or roof of the car such mechanism in no respect served to directly sustain the bottom or floor of such car. Undersuch circumstances ithas frequently happened that when a car has been heavily loaded and its suspension-rope has broken, and in consequence thereof the car has dropped until brought to a stand by its safety apparatus, the bottom or floor of the car and its load, by reason of the momentum generated therein, have separated from the sides of the car and fallen to the bottom of the well, serious results having followed such accidents.

My improved safety mechanism is to prevent this breakage of the car and fall of its floor and load from causes as set forth; and to this end I adapt the safety-catches to the bottom or flooring of the car, so that it may be supported by them when they may be in engagement with the well-racks, and I apply to the top of the car the lifter-bar and connect it with the said safety-catches by rods and elbowlevers, as hereinafter described.

In the drawings, A denotes the elevator-car, and B its well, the latter having within it, at its opposite sides or diagonal corners, two serrated raoks, one of which is shown at C.

To the under side or bottom of the floor of the car there are applied, by means of strong carriers or frames D, bolted thereto, two safety slide-catches, E, adapted to engagewith the said racks, each of the said catches being pro vided with a spring, G, to force it forward toward its rack.

The shank of each catch is connected with or linked to the middle part of one of two elbow-levers, H, arranged with the bottom of the car in manner as shown, and pivoted thereto or to a metallic carrier, I, fastened to the said bottom. Rods K, pivoted to the lower arms of the elbow-levers and going up through the car near its two opposite diagonal corners, are connected with the rope-lifter beam or bar L, arranged over or upon the top of the car and 'attempt being made to raise the car by its liftin g-rope each of the safety-catches will first be drawn back out of engagement with its rack until stopped by the shoulder a of the catch being drawn against the cap I) of its carrier, this having to take place before the car can'be raised. 7

It will also be seen that the car at its bottom is connected with the lifter-bar by means of its depending rods and the elbow-levers, the latter being linked to the stems of the safety-catches.

In case of breakage of the lifting-rope there will be a consequent fall of the car a short distance within the well, the weight of the car while the rope is intact and suspending the car being suflicient to overcome the expansive power of the springs tending to drive the catches forward. The car in falling will drop until the springs may drive the catches into engagement with the racks, and as the catches and their attachments to the car are beneath the floor it will readily be perceived that the latter on stoppage of the car will be prevented from breaking away from the rest of the car and falling with the passengers or goods that may be within the car to the bottom of the well.

I am aware that it is not new to adapt safetycatches to the lower part or bottom of the car, such being shown in the United States Patent No. 121,910; but in this case such catches were simply pushed out of action with their racks by rods projecting down from levers acted upon by the lifting-rope, there being no cross-bar,

like the bar L, and rods depending therefrom. and bent levers to pull the catches out of action with the racks, as in my improvement.

WVith my invention the bar L and its depend ing rods serve to lift the car from its bottom but in the said Patent No. 121,9) the car is supported by levers attached to its top, from which it will be seen that important differences exist between my safety mechanism and that set forth in the said patent.

That I claim as m y invention is as followsthat is to say, in passenger or goods elevators 1. The combination of the elevator-ear and its lifter-barL with rods extending down from scribed.

WILLIAM I. PAGE. Witnesses:

R. H. EDDY, YV. WV. LUNT.

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