US1472386A - Cable equalizer - Google Patents

Description

Oct. 30, 1923. 'M

H. B. COOK CABLE EQUALIZER Filed Dec. l, 1922- lli-I f Patented @ch 30, 1923.

UNHTEU STATES HOWARD B. COOK, 0F NORWOOD, OHIO, ASSIGNOR TO THE WARNER ELEVATOR MANU- FACTURING COMPANY, OF CINCINNATI, OHIO, A CORPORATION 0F OHIO.

CABLE EQUALIZER.

Application led December 1, 1922. Serial No. 604,138.

To all whom t may concern:

Be it known that I, HOWARD B. COOK, a citizen of the United States, and residing at Norwood, in the county of Hamilton and -State of Ohio, have invented a new and useful Improvement in Cable Equalizers, of which the following specification is a full disclosure.

This invention relates to a device for equalizing the strains upon a plurality ofy ther objects and certain advantages will appear in a description of the drawing, in which drawing:

Figure 1 is a top plan view of my device as applied to the top rail of an elevator.

Figure 2 is a side elevation of the structure of Fig. l, parts being broken away for purposeV of clearer illustration.

Figure 3 is a transfer section on line 3 3, Fig. 2.

The numeral 1 designates the drawhead ot an elevator frame, only a portion of the traine being herein illust-rated. The drawhead, as herein shown, is composed of two channel irons attached at their opposite ends to vertically disposed channel irons 2, disposed intermediate of the channel irons 1. The elevator frame structure, however, forming no part of this invention. Pivoted respectively to bearing pins 3, 4, supported by and engaged between the channel irons l of the drawhead, are two levers, 5, 6, each ot unequal arm length, the corresponding arms of each lever being of equal length, the respective short arms thereof being opposingly disposed, and the bearing pins of said levers disposed in the same horizontal plane. Each lever is formed of two plates spaced apart by suitable spacing collars traversed by bolts for clamping the plates together. The levers swing on the bearing pins centrally between the drawhead channel irons 1. Links or drawbars, respectively, 7, 8, are pivoted as at 9, 10, to the short arms of the respective levers 5, 6. Links 11, 12, are respectively pivoted as at 13 to the outer extremities of the long arms of said levers. The respective extremities of the links 11, 12, are pivoted also at 15 to corresponding opposite extremities of a shackle, doubletree, walking beam or lever 14, as a connector member. The shackle, doubletree or lever, or connector member 14 is of two-plate construction, the plates ixedly spaced apart, as in the case of the levers 5, 6, by suitable spacers traversed by clamping bolts. Ceintrally of the lever, shackle or connector member 14 and between the plates thereof is pivoted as at 16 a third drawbar 17, which extends upwardly, and parallel with the drawbars 7, 8. The upper end of each of the drawbars 7, 8 and 17, is provided with a forked or yoke head 18, which is pivoted at 20 centrally to a single tree-.or lever 25,

at the outer extremities of which and disposed symmetrically at each side of the pivot are pivoted as at 29 forked cable sockets 27, each having a cable 28 attached thereto. Thus a pair of spaced cables pivotally connect with each drawbar. 'ln order that the cables may be symmetrically and compactly arranged and aligned crosswise of the drawhead in correspondence to the disposition of grooves of the winding drum, (not shown) or gmoved pulley over which the cables travel, the equal-armed levers or single trees of the drawbars 7, 8 and 17, are disposed in non-parallel relation with respect to the lower set of levers 5, 6 and connector member 14. The equal-armed levers or single trees 25 on the bars 7 and 8 are disposed in mutually parallel relation, and the lever or single tree 25 of the bar 17 is disposed at a higher elevation and at an angle thereto, and also in non-parallel relation with the lower set of levers. This, arrangement allows for convenient symmetrical grouping of the cables, and has been found to be particularly advantageous as applied to sircable elevator suspension.

Having described my invention, lt claim:

1. n combination with a drawhead, comprising spaced beams, of equalizing elements pivoted between said beams, links attached to the exremities of said equalizing elements, a shackle connecting non-adjacent links, ad

jacent links extending through said shackle, a link tattached to said shackle centrally thereofV and of said adjacently disposed links, equalizing elements attached to each of said adjacently disposed links, and means for connecting a cable to opposite extremities of each equalizingl element of the said adjacently disposed links.

2. In combination with a drawhead, comprising spaced parallel beams, of a 'lower set of equalizing elements between said' beams, and pivoted thereto, in the same plane and symmetrically, at each side of the center of figure of said drawhead, links pivoted to non-adjacent extremities of said elements, bars attached to adjacent extremities ofsaid elements, a shackle bridging said elements and connected with said links, a bar attached centrally of said shackle and disposed in parallelism with the first mentioned bars and between the same, an upper equalizing element pivoted to each bar, and means for connecting cables to the extremities ofeach upper equalizing element.

3. In a combination, with a drawhead, comprising two spaced parallel beams, levers having unequal arms pivoted between said beams, said pivots horizontally aligned, the short arms of said levers adjacently disposed, links pivoted to the long arms of said levers, a shackle connecting said links, a

drawbar pivoted to each short arm of said lever, a third drawbar pivoted to said shackle, centrally thereof and of said first mentioned levers and drawhead, equalarmed levers, one pivoted to the top of each drawbar, and means for connecting a cable to each extremity of each of said levers, said levers in non-parallel relation with said first mentioned levers and shackle.

4. In a combination, with an elevator drawhead, comprising two parallel "b'eams, two levers of unequal narm length pivoted in the sameplane between said beams, one symmetrically at each side of the center of figure of said spaced beams, the short arms of said levers disposed mutually adjacent, links pivoted to said short arms, having at their opposite ends equal-armed levers, links pivoted to said long arms of said unequalarmed levers, a connector member connecting said links, a link pivoted centrally of said connector member, and an equal-armed lever pivoted to said connector member, and rope sockets pivoted at the ends of said equal-armed levers.

5. A tensionequalizing device, comprising two pivoted levers having aligned pivots, drawbars pivoted to adjacent short arms of said levers, links pivoted to non-adjacent long arms thereof,`a shackle member connecting said links, said member composed of space plates clamped together, a drawbar pivoted between said plates, centra-lly of said shackle, and equal-armed levers pivoted to the extremities of said drawbarin non-parallel relation with one another and with said shackle, and means for attaching cables to the ends of said equalarmed levers.

6. In a; six-cable equalizing device for elevators, the combination with an elevator drawhead, comprising spacedy parallel beams, of pivoted equalizing levers between said beams, said levers having unequal arms, their short arms opposingly related, links pivoted to the outer ends of the long arms of said levers, a shackle pivoted to and connecting said links, said shackle member composed of space plates clamped together, a drawbar attached to the short arm of each of said levers and extended between the plates of said shackle, a third drawbar pivoted to said shackle centrally thereof and of said levers and drawhead, equal-armed levers, one pivoted at the top of each drawbar, and means for connecting a cable to each extremity of each of said equal-armed levers, said levers being in non-parallel relation to said first mentioned levers and shackle, two of said levers mutually parallel and the third non-parallel with the other two.

7. In a six-cable equalizing device for elevators, the combination with an elevator drawhead, comprising spaced parallel beams, of equalizing e ements pivoted between said beams, said elements having unequal arms, their short arms opposingly related, links pivoted-to the ends of the long arms, a shackle member pivoted to and connecting said links, said shackle member composed of plates clamped together in spaced relation,

a drawbar attached to each short arm of said levers and extended between the plates oi said shackle, a third drawbar pivoted to said shackle centrally thereof and of said levers and drawhead, equal-armed elements, 'one pivoted at the top of each drawbar, and means for connecting a cable to each extremity of each of said equal-armed elements, said elements being in non-parallel relation to said first mentioned elements and shackle, two ofsaid levers'mutually parallel and the 115 third non-parallel with the other two.

8. A device of the character disclosed, comprising a support, a pair of companion levers pivotally mounted upon said support,- an equalizing lever at its opposite ends respectively plvotally connecting to one end of each of said companion levers, and single trees respectively pivotally connected at their centers to the opposite ends of said companion levers and centrally to said equalizing lever, and a pair of cables respectively pivoted and secured to the opposite ends of each single tree.

9. A device of the character disclosed, comprising a support, a pair of companion levers pivotally mounted upon said support 10 neCted at its center to i'ts drawbar, and a pair of cables respectively pivoted and secured to the opposite ends of the single tree.

In Witness whereof, I hereunto subscribe my name, as attested by the two subscribing wltnesses.

HOWARD B. COOK.

Witnesses:

L. A. BECK, R. KISTNER.

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