US1650847A - Hoisting apparatus - Google Patents

Description

.Nov. 29, 1927.

' 1,650,847 F. J. MURPHY HOiSTING' APPARATUS 7 Filed Jan. 13. 1926 Y 2 sheets-sheet 1 Nov; 29, 1927.

F; J. MURPHY 3013mm APPARATUS Filed Jan. 13. 1926 2 Sheets-Sheet 2 Ill-I of Fig. 4.

Patented Nov. 29, 1927.

FRANK J'. MURFHY, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR, T0 KRAFFT MURPHYCQ, 0F WASI-IINGT0N, DISTRICT OF COLUMBIA, A CORPORATION OF DEL- AWARE.

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Application filed January 13, 192 Serial No. 81,051.

This invention relates to improvements in elevators and particularly hoists of the character commonly used for elevating materials such as cement or plaster to be used in the erection of buildings. v

One object of the invention is to provide a hoist with which material,; such as concrete, to be used in floors, or plaster to be used on the walls, maybe transported or conveyed from a mixer on the ground at the exterior of the building to the interior of the building at the floor where it is to be used without the aid of manual labor in the actual carrying of'material.

A further object is to provide a hoist of very simple and comparatively inexpensive construction. In this connection it is desirable to so construct the hoist that the entire load of the container or bucket for carrying the material will be borne by some part of the building structure and not by the ways which guidesaid container .or bucket. "l/Vith an arrangement such as this, the construction of the ways may be greatly simplified due to the fact that they carry no extraordinary weights and by relieving .them of the load it is possible to extend the ways upwardly a considerable distance for use inconnection with high structures without employing a tremendous amount of supporting structure for the ways. r

With these and other objects in View the invention consists inloertain novel details of construct-ion and arrangementsandcombinations cit-parts all as. will be hereinafter more fully described and the novel features-thereof particularly pointed out in the appended claims.

In the accompanying. drawings Figure lis anelevat'iOnaI view, partly in section, of an apparatus embodying the pres ent improvements.

Fig. 2. is an elevation looking at the apparatus and the outer face ofthe wall if the building. p

Fig. ,1, but on .3 is a view similar t 1 an enlargcdscale, showingthetrip device "for tilting the containerto discharge the material therefrom. F v

Fig. 4: is a plan view ofthe parts showiiih 3.;andf Fig. .5 is .asectionad View on the. line 5-5 As illustrated Fig. particular paratus shown .isdesigned for handling conbe understood.

crete to be used in the construction of the floors included in the illustration adiagrammatical representation of the concrete mixer 10. This mixer, as is well understood, is adapted to be tilted to discharge. its contents after the same havebeen thoroughly mixed and, in accordance with the present invent-ion,,the container 11, into which the mixer is adapted to discharge its contents, is mounted on ways 12 which extend into a pit in proximity tosaid mixer whereby the container .11 may be lowered to a position below mixer 10 to receive the contents of the latterwhen the same is dumped. By having the mixer located in position to dump .directly into container 11 when the latter is lowered into the pit .or below the mixer, it is unnecessary that any manual labor be used in carrying the material from said mixer to said contaiuer. y

For supporting the ways 12 of the hoist there is a supporting frame mounted in vertically disposed openings, such as the win- .dows, in the building and these supporting of a building and there is, therefore,

frames carry brackets which engage said ways and maintain the latter in their vertical positions properly spaced with respect to one another. As shown in the drawings these supporting frames comprise inner and outer timbers 18, 14, which may be clamped against the inner and outer faces of the building wall bysuitable tie bolts 15. Spanning thetimbers 13, 14:, are cross timbers 16 bolted to said timbers 13, 1 1,. said cross timbers engaging or abutting against the sides of the window or other opening to pre- Vent movement of the frame longitudinally .of timbers 18, 14. Bolted or otherwise secured to the exterior timber 14 are L-shaped brackets 17 to which the ways 12 are secured by suitable fastening means, suc'has clips 18. Tolend strength "to, said bracketsfi they are made angular in, cross section and they reinforced by suitable braces 19 conne'ct'ing to the two arms thereof.

' 'fjlhe containerll is pivoted 0d centernear its bottom, as at 20, one frame 21 which is adapted to be guidedby the ways 12 as will Adjacent its upper ordis- .charge end thecontainer carries atits edge nearest thewall of v the building two rollers 22, 23 and'mounted on each ofcross timbers 16 of thebracket supportii1g frame in the Window ofthe floor towhich the material vwardly along the inclined portion 26 is to be delivered there is a comparatively heavy plate 24 on which is provided a trip mechanism adapted to engage the rollers 22, 23 on the container to first project said container inwardly through the window opening and then cause the same to bc tilted bottom upwards so as to insure the entire contents being discharged therefrom. This trip mechanism preferably comprises a stop, in the form of an angle iron 25 bolted to plate 24 in position to engage roller 22 of the container as the container is elevated. It will be understood that the cable 28 for raising the container is attached to the frame on which the container is pivoted and not to the container itself. This being true, when roller 22 engages said stop 25 the container will be tilted upon its pivotal center 20 upon a continued upward movement of the frame, the rollers being caused to move laterally to a position on a track 26 and the container bemg caused to assume a substantially horizontal position with the lower edge of its mouth located within the inner surface of the inner wall. To clearly illustrate this position of the container, it has been shown in dotted lines at 11 and the rollers in dotted lines at 22. After the container has assumed the position shown in dotted lines at 11 a continued upward movement of the container frame will result in the container being tilted bottom upwards as shown in dotted lines at 11 When in this tilted position roller 23 will be elevated on to a track 27 mounted on plate 24. After the contents of the container have been discharged the hoisting cable will be lowered and the weight of the container will cause the rollers to both run onto a track 26 to the position they assumed when the container was in position 11 and then, as the container frame is'further lowered the rollers will move downof track 26 and the container will again assume its vertical loading position. In the foregoing description reference has been made to only one plate 24: but it will be remembered that there is a plate 24 provided with duplicate trip mechanism at each side of the opening.

It will be observed that the ways 12 are supported in their vertical positions solely by being clipped to the brackets 17. This is rendered possible by reason of the fact that, according to the present invention, the entire load composed of the container and its contents and the container frame are supported by the hoisting cable 28 from suitable pulleys 29 supported by suitable bearings 30 on timbers 31 mounted at some point on the building independently of the ways 12. If desired, these timbers 31 may be mounted on beams 32 anchored at the top of the building or, the beams 32 could be located in one of the upper window openings of the building and anchored on the interior of the building in any suitable way. By sustaining the container frame, the container and the contents of the latter through means structurally independent of the ways, said ways carry no longitudinal strains and they can, therefore, be made comparatively light. Furthermore, no supporting structure. in addition to the brackets 17, is necessary for said ways and, consequently, the entire space between the supporting brackcts of each two adjacent floors and between the ways and the wall of the building is unobstructed or open to permit the projection of the container 11 through the window opening. Another feature of supporting the load independently of the ways is that the ways may be extended to practically any height, or at least to heights considerably greater than is possible in other types of hoists because the lightness of the ways eliminates the imposition of extraordinary loads by the upper portion of the ways on the lower portions thereof.

The greater portion of the contents of the container may escape when said container is first projected through the window opening with its open end located within the inner face of the wall but to prevent the loss of any material falling from the container when the same is fully inverted (at which time its open end is slightly retracted) small platforms 33 may be provided on the timbers of the bracket supporting frames.

What I claim is:

1. In an apparatus of the type described, the combination of a container, vertical ways on which said container may. be elevated, frames adapted to be rigidly mounted in window openings or the like, brackets mounted on said frames and attached to said ways for supporting said ways, and means structurally independent of said ways and their supporting means for supporting and elevating said container on said. ways.

2. In an apparatus of the type described, the combination of oppositely disposed vertical ways, a container movable along said ways, frames adapted to be rigidly mounted in window openings or the like of a structure in which the material transported in said container is to be used, supporting connections between said frames and said ways, mechanism for raising and lowering said container on said ways, the entire load of said container and its contents being carried by said elevating mechanism, whereby the ways are free of longitudinal stresses other than those imposed by their own weight, and a. trip mechanism mounted on one of said frames for tripping said container.

3. In a material hoisting apparatus adapted to be positioned in close proximity to the exterior wall of a structure being erected, the combination of frames adapted to be rigidly mounted in vertically disposed window openings or the like of said structure, a pair of brackets mounted on each frame at the base of the opening and projecting beyond the Wall of said structure, Ways connect-ed to and supported by said brackets, a container movable along said ways, mechanism for elevating said container on said ways, said elevating mechanism carrying the entire load of said container and its contents, whereby none of said load is imposed on said Ways, and a trip mechanism mounted on one of said frames for tripping said container.

4. In a material hoisting apparatus adapt-- disposed Window. openings or the like of said structure, a pair of brackets mounted on each frame at the base of the opening and projecting beyond the Wall of said structure, Ways supported by'said brackets, clips connecting said Ways and brackets, a container movable along said Ways, and mechanism for elevating said container on said Ways, said elevating mechanism carrying the entire load of said container and its contents, wherebynone of said load is imposed on said Ways, and means mounted on the frame in one of said openings for tripping and tilting said container, the entire space between the brackets of each two adjacent openings and between said ways and the Wall of said structure being unobstructed to permit said container to be tripped and tilted through said opening.

FRANK J. MURPHY.

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