US337317A - Safety attachment for elevators - Google Patents

Description

(No Model.)

Patented Mar. 2, 188 6.

WITNESSES N. PETERS, Pholo blhognphon Washington, D. C.

- STATES PATENT FFlCFa HIRAM R. FEBRIS, OF CLEVELAND, OHIO.

SAFETY ATTACHMENT F OR ELEVATORS.

EPE'C'IFICATION forming part of Letters Patent No. 337,317, dated March 2, 1886.

Application filed January 6, 1886. Serial No. 187,196. (No model.)

To all whom iamay concern:

. Be it known that I, HIRAM B. FERRIs,of Cleveland, in the county'of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Safety Attachments for Elevators; and I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to'make and use the same.

My invention relates to improvements in safety attachments for elevators in which one or more bars, slats, or rods are suspended from each hatchway, so as to eng ige anything projecting beyond the elevator-platform when the elevator is ascending. The bars, slats, or rodsare supported by leverslarranged substantially like what is known as a parallel ruler, so that the bars, slats, or rods may move upward. The bar, slat, or rod, or system of bars, slats, or rods suspended from each hatchway is connected with a vertical rod, cord, or cable, as the case may be, leading from top to bottom of the elevator-shaft, the latter being connected with levers 'ar-.. ranged to form a knuckle-joint, by operating which a suspended weight is'released, said weight having a cord attachment that is connected with the shifting-cable of the elevator,.

so arranged that the descent of the weight elevates the shitting-cable and stops the upward movement of the elevator, the object being to simplify the construction, to increase the eiiiciency and durability, and lessen the initial cost of this class of elevator attachments. lVith these object'sin View my invention consists in certain features of construction and in combination of parts hereinafter described,and pointed out in the claims.

In the accompanying drawings, Figure l'is a side elevation showing the suspendedweight and the attachment for operating the sanie.

Fig. 2 is a side elevation through'the parallel rod suspended from a hatchway. Fig. 3 is an enlarged elevation of the'suspended weight and levers for operating the same. 4 is an enlarged elevation showing a modification of the suspended weight and attachments.

A. represents the floors with hatchways A, through which the elevatorplatform (not shown) passes. On the front side-that is,

the side where freight or passengers are received or discharged-and under each hatchway is arranged a bar, rod, or slat, B, that is pivoted to the levers 0, the levers in turn being pivoted at e to the hangers D. Light chains E are secured to the lower side of the hatchway and to the bar B; These chains are of equal length, and are distributed at suitable intervals along the bar B-for instance, as shown in Fig. 2. These chains form stops that limit the depression of the bar B to'about ten inches (more or less) below the bottom of the hatchway, and the arrangement of parts is such that, with the'bar B depressed, the levers G are inclined in the same direct-ion, as shown. The bar B is arranged flush with the face of the hatchway, so that when the ele-' I vator is ascending anything on the elevator that would clear the bar B will also clear thev face of the hatchway If anything projected beyond the elevator-platform so as to come,

under the bar B, the latter would be carried up substantiallyin the manner that parallel rulers are closed. Rods b are passed through the links of the chains E, and on the face-that is, the side next the elevator-platform-is secured a cloth screen, or netting of suitable material, that will fold easily as the system of bars or rods is elevated, by means of which cloth or screen small articles or the toe of the foot cannot 'be thrust outward under the hatchway after having passed above the bar B.

By means of suitable mechanism, next de-' raised the rod F will be drawn upward. At some convenient place, which may be anywhere along the line of the elevator from eeli,

lar to garret, a weight, G, is arranged in a:-

box or casing, G, with a cord, 9, secured to the weight and leading over a pulley,g, and from thence downward a suitable distance, and is attached to the shifting-cable H, for instance, at h.

In Figs. 1 and 3 the cord g is shown attached near the left-hand side of the weight, so that 5 if the weight were drawn up by the cord the lower end of the weight would by gravity incline to the left hand, so as to rest on the slight shelf, ledge, or projection I, in which elevated position of the weight there is slack no enough in the cord g to leave the shifting-cable H free to be operated in the usual manner. When the weight is pushed off of the shelf 1, in its descent it draws on the cord and the latter draws up on the cable H, the length of 1 the cord g being such that when the weight strikes the bottom of the casing the cable is drawn up to the point that stops the elevator in its ascent. Alever, J, is pivoted atj and jointed to the lever K, and at the joint these levers are connected in any suitable manner with the rod F. A weight, J, is arranged to more or less counterbalance the weight of the rod. -When the knuckle-joint formed by the levers J and K is bent downward, as shown in Fig. 1, the outer end of the lever K rests against the side of the weight G. Now, when a 'bar B is elevated, causing, as aforesaid, the rod F to be elevated, the knucklejoint is raised or straightened, so that the lever K pushes the weight G off the shelf I, when, by means of the descending weight, the shifting cable is drawn up and the elevator stopped. After the elevator has been thus stopped and the projected obstruction removed, the weight G is drawn up by hand or other means, and madeto rest on the shelf I, and the knuckle-joint is again adj uste'd, as shown in Figs. 1 and 3, after which the elevator is in condition to run.

In Fig. 4 is shown a modification where a o sloping shelf, ledge, or projection, I, engages a correspondingly-beveled lower edge of the weight, and the knucklejoint is set in a straight line to hold the weight on the shelves or ledge. \Vith such construction, when the 5 rod F is elevated, it draws the knuckle-joint upward and releases the weight, so that the latter slides off of the shelf.

It will be observed that I use no springcatches or any mechanism that is liable to ,0 break or become disarranged from wear or accident.

' A rubber block, G", is attached to the bottom of the weight G to cushion the same when it'descends to the bottom of the casing. 5 \Vh'at I claim is- 1. In a safety attachment for elevators, the combination, with a hatchway, of a bar, slat, or suitable device held suspended under the hatchway and parallel and flush with the face 0 of the latter, said bar or slat being pivoted to inclined levers that operate in the same plane with the said bar or slat, said levers inolining in the same direction, substantially as setforth.

2. In a safety attachment for elevators, 6 5

described, of chains secured to the hatchway and to the suspended bar to limit the depression of the latter, substantially as set forth.

3. In a safety attachment for elevators, the combination, with a hatchway, and a bar or suitable device pivoted to inclined levers and held suspended under the hatchway, with chains to limit the depression of the suspended bar, of rods inserted in the links of said chains, the parts being arranged substantially as set forth.

4. In a safety attachment for elevators, the combination, with a hatchway, a suspended bar, inclined lever, chains, and rods secured in said chains, substantially as described, of a cloth screen, netting, or suitable flexible dc vice arranged to extend on the face of such bars, rods, and chains, so as to fold with the same, substantially as set forth.

5. Ina safety attachment for elevators, the combination, with a hatchway, a suspended bar, and inclined levers arranged substantially as described, of a cloth or suitable flexible material secured to the hatchway and to the suspended bar, so as to fold when the latter is elevated, substantially as set forth.

6. Ina safety attachment for elevators, the combination, with a hatchway, and a bar or suitable device held suspended under thehatchway, of a cloth or suitable flexible material secured to the suspended bar, so as to close the opening between the bar and hatchway, said cloth being arranged to fold when the bar is elevated, substantially as set forth. 7

7. In a' safety attachment for elevators, the combination, with a weight for reversing the shifting-cable to stop the ascent of the elevator, of a shelf, ledge, or projection for en gaging the weightand holding the latter elevated and inoperative, and suitable mechanism for automatically disengaging the weight from such shelf, ledge, or projection, substantially as set forth.

8. In a safety attachment for elevators, the combination, with a weight for reversing the shifting-cable, and a shelf, ledge, or projection for holding the weight elevated and inoperative, of levers forming so-called knucklejoints, arranged for disengaging the weights from such shelf, ledge, or projection, the parts being arranged substantially as set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 28d day of December, 1885.

ses age.

ALBERT E. LYNCH.

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