US458765A - Safety device for elevators - Google Patents

Description

(No Model.)

E. P. MOENNING & K. A. W. HABSBLER. SAFETY DEVICE PoR BLEVATORS.

Patentedept. 1

" UNITED STATES EMlL F. MOENNING AND KARL A. NV. HAESELER, OF SAN FRANCISCO, OALFORNIA.

SAFETY DEVICE FOR ELEvAToRs.

Application iilecl April 22,

To all whom it may concern:

Beit known that we, EMIL F. MoENNiNe and KARL A. YV. HAESELER, citizens of the United States, residingin the city and county of San Francisco, State of California, haveinvented an Improvement in Safety Attach ments for Elevator-Cages; and we hereby declare the following to be afull, clear, and exact description of the same.-

Our invention relates to a novel safety attachment for elevator-cages.

by its rope. `mortised or 5o outer ends of the levers D. The

' accompanying drawings,

It consists in the combination, with the cage and the vertical guide-timbers thereof, of supplemental vertical bars fitting in grooves in the outer faces of the guide-timbers,said vertical bars being connected at top and bottom with an gularly-disposed levers, by the action of which they are drawn toward the center or forced outward.

lt further consists in the connection, with these levers, of the suspending-link, springs acting upon the levers when the link is released by breakage, and cushion-springs upon which the elevator-cage is received when the safety attachment is throwninto action, and in certain details of construction which will be more fully explained by reference to the in which-- Figure l is a side elevation with section of one of the side timbers. Fig. 2 is an end view of the cage-frame. Fig. 3 shows the manner of joining the levers.

A A are the vertical side timbers of the elevator-cage, the platform of which is indicated in the present case at B. These side timbers travel lin suitable guides, which extend vertically upon each side of the well within which the elevator moves. They may be made of any suitable or desirable material, as wood or iron. They are formed with grooves or channels A', made in their outer faces, these grooves or channels being of suficient width and depth to receive the vertical bars C and allow them to lie entirely within the grooves, so as not to form any frictional contact with the guides in which the elevator travels when the latter is properly suspended The upper ends of the bar O are otherwise fitted to receive the of these levers meet together and abut within SPECIFICATION forming part of Letters Patent No. 458,765, dated September 1, 1.89]

1891. Serial No. 390,041. (No model) inner ends cisely the same manner PATENT OFFICE.

a yoke E, which is fixed centrally to the top of the cage or the cross-beam which connects the two sides A. These meeting ends have semicircular grooves madein them, and within these grooves balls or rollers F are fitted, surrounding a sleeve G, which is of sufficiently smaller diameter to allow the balls or rollers to lie between the outside of the sleeve and the interior of the semicircular grooves or channels. Through the center of this sleeve a pin H passes, its ends extending out through slots I in the yoke and passing into holes in opposite sides of the link J,whicli is fitted to slide in guiding-channels formed upon each side of. the yoke, as shown. The link J is considerably longer than the yoke, and when drawn downward until the pin is at the bottom ofthe slot in the yoke the lever-arms D will stand at a more obtuse angle than when at the highest point, the bar which unites the lower ends of the link then being considerably below the bar which connects the sides A of the cage.

Between the meeting ends of the lever-arms D and the top of the yoke inside are fitted the springs K. At the top of the link is a stout loop or eye L, into which the suspending-rope is fixed. When the weight of the cage is suspended by this rope, it will be seen that the link will be drawn up until its bottoni bar is in contact with the top bar of the cage. The ends of the levers D will be drawn up toward the top of the yoke, and will thus compress and ilatten the springs K between the top of the yoke and the top of the levers. These ends of the levers, having been drawn up in this manner, will draw the upper ends of the side bars inward, so that they lie within the sides of the vertical timbers A of the cage, and whenever for any reason the inner ends of these levers are pressed downward the outer ends will force the side bars C outward, and they will be correspondingly projected from their channels in the uprights A, so as to bind againstthe guides between which the elevator travels. The lower ends of the bars O are similarly connected by levers D', the outer ends of which are united to them, inner ends meet and are connected in preas before described with the pin, the sleeve,

while the i and roller or ball" Sii bearings outside the sleeve. By reason of this anti-frictional joint weinsure the easy move4 ment 'of all the parts upon each other and prevent their being in any way becoming 5 clogged or prevented from having a free movement The outer ends of the levers D and D', where they pass through the mortises in the vertical bars C, have longitudinal slots made in them, as shown at a. Pins pass through the sides of the bars C and through these slots, andit will be manifest that the lever-arms D and D will be allowed to slide slightly through the slots or mortises in the bars. When by reason of the connection with the suspending-rope the inner ends of the lever-arms are drawn up to their highest point, their outer ends are drawn inwardly, so that they in no way touch or bind upon the guides between which the elevator travels; but when by any reason, as the breaking of the rope, the springs act to force these bars downward the endsvwill be first forced out through the vertical bars C,.and,`as these outer endsl are slightly beveled, the lower angles being acute will engage with the sides` of the guides. the same time the-slots in the levers are so short thatthe pins passing through them will act upon the side bars C, and they also will be forced out into frictional contact with the guides. The peculiar-ity of this construction is such that while the pendedy by the rope and link roperemains intact, as soon as it becomes broken or from other reason the link is allowed to be-forced down by the action of the springs above the lever-arms the latter project out and force the barsv C into contact with the guides, and the whole apparatus is thereafter suspended by the frame-work cousisting of the bars C and leversD and D,.while the cage is free to drop within this frame- ""work. As it drops down upon the top of the lower levers D the shock is relieved by means so long as the ofthe springs M, which are fixed between the top of the meeting ends of the lever D and the lower bar or floor of thecage. ends of the levers D and D are slightly beveled,.as shown, so that when the device is suspended and the centers of the leversdrawn up to meet at the angle which they maintain in their normal condition the outer ends of these levers will be flush with or slightly within the outer tion-bars C, but when they are released from the rope, so that the center of the bars D is forced downward by the action of the springs M, the ends of these levers will slide out by reason of the slot moving over the pin which connects them with thebars C, and these beveled ends will be forced out slightly beyond the barC and take a positive hold upon the guides, the first action being that of the levers D at the upper end7 and as the cage is then allowed to drop between these bars it acts upon the levers D' at the bottom and forces them out Vin a like manner. This insures the engagement of the ends of both sets wvard beyond the line whole device is sus.

The outer faces of the vertical fricf of levers with the guides, and in addition forces the bars C outward, so that they engage the .guides with a strong frictional contact extending the whole length of the bars.

At the top and bottom of the side timbers A of the cage are fixed the anti-friction rollers O, the outer peripheries of which project just enough beyond the outer faces of the timbers A to form a rolling contact with the `guides when the elevator is suspendedand in its normal condition; but the action of the levers D and D will force the'bars C out of these rollers whenever the levers are released.

In order to clear oif any chips or accumuwhen the cage is movngupwardly'they will scrape off any accumulated dirt or plane off any-small chips or broken wood which may have been formed by reason of the outer ends of the levers D-being forced intoy the guides in checking the cage at any time.

N are angle-plates fixed to. the inside faces of the bars C just below the levers D and above the top bar of the cage. angle-plates give increased bearing-surface beneath the outer ends of the levers, and the upper bar of the cageabuts against them, so

These l fhaving a beveled edge presented, so thatZ as to give an even support at each` end and'fV keep it from contact with vers.

Having thus described our invention, what we claim as new,vand desire to secure by Letters Patent, is

l. In an elevator, the side timbers having grooves or channels made longitudinally in their out-er faces,v supplemental vertical bars fitting said grooves or channels, levers having their outer ends connected withsaid bars above and below the cage and their inner ends meeting cent-rally above and below the the ends of the le- 2. In an elevator, the longitudinally-channeled vertical side timbers,the supplemental said channels and adapted to respectively, of these bars and their meeting ends jointed together, a yoke connected with the top of the cage, having' guide-channels upon each side,a suspending-f IOO IIO

tzrl

link sliding in said guide-channels and having a bar at the bottom which engages and supports the top bar of the cage, a pin passing through the meeting ends of the levers, and corresponding holes in the sides of the link, slots in the sides ot' the yoke which allow said pin to travel up and down, so that the levers may be moved from an obtuse angle with each other when the side bars are forced outwardly to a greater angle when the bars are drawn into the channel in the side timbers, and springs xed between the top of the yoke and the upper side of the meeting ends ot the bars, whereby the latter are forced downward, so as to extend their ends and the side bars when the device is released from the suspending-rope, substantially as herein described.

3. In an elevator, the vertically-channeled side timbers, supplemental bars fitted to lie in said channels in the exterior of the timbers, levers above and below the elevatorcage, having their inner ends connectedtogether, their outer ends extending through mortises in the side bars and beveled so as to engage the guide-timbers when forced outward, longitudinal slots made in these levers within the mortises ot the side bars, and pins passing through the side bars and through these slots, whereby the ends of the levers may be drawn inward when the cage is suspended and allowed to extend slightly beyond the faces of the side bars when the levers and bars are forced outwardly, substantially as herein described.

4. In an elevator, the cage having the vertical side timbers channeled longitudinally in their outer faces, a flexible jointed supplemental frame-work consisting of side bars C, fitting in the channels of the side timbers of the elevator-car, levers D and D above and below the elevator-car, having their inner ends connected together with an anti-frictional joint and the outer ends pivoted to the supplemental side bars, yokes connected with the top and bottom of the cage, having slots through which the pins connecting the meeting ends of the levers extend, a link sliding in guides in the upper yoke, having an att-achment at the upper end for the suspending-rope, and the pin connecting the uppe'r levers extending through holes in its sides, springs iitted between the top of the yoke and the top of the upper levers, whereby the latter are forced downward and outward when released from the weight of the cage, and springs fixed between the bottom ofthe cage and the tops of the meeting ends of the lower levers, so that the cage may drop upon these springs when the side bars and levers have been forced out into frictional contact with the elevator-guides, substantially as herein described.

5. In an elevator, the combination of the vertically channeled side timbers, supplemental bars fitting said channels, centrallyjointed levers above and below the car, the outer ends of which connect with the upper and lower ends of the supplemental bars, a suspending link, springs acting upon the upper levers, and rollers journaled in the side timbers, with their peripheries projecting and traveling in contact with the guides while the cage is suspended, substantially as herein described.

G. In an elevator, the guides thereof and a cage or car, in combination with Scrapers carried by the cage or car, having their edges acting against the guides to plane or smooth the same, substantially as herein described.

In witness whereof we have hereunto set our hands.

. EMIL F. MOENNING.

KARL A. IV. HAESELER.

Witnesses:

S. H. Nonnen, H. F. Asonuox.

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