US1175049A - Material-elevator. - Google Patents

Description

H. CULL.

MATERIAL ELEVATOR.

APPLICATION FILED OCT. 20. 1913.

1,175,049. Patented Mar. 14, 1916.

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MATERIAL ELEVATOR.

APPLICATION FILED OCT. 20. 1913.

1,175,049. Patented Mar. 14,1916.

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HENRY CULL, or CHICAGO, ILLINOIS.

MATERIAL-ELEVATOR.

Application filed October 20,

and State of Illinois, have invented certain new and useful Improvements in Material- Elevators; and I do hereby declare that the following is a full, clear, and exact de scription of the same, reference being had to the accompanying drawings, and to the numbers of reference marked thereon, which form a part of this specification.

This invention relates to material elevators of that class used in the erection of buildings, for the elevation of materials entering into the construction thereof. In the erection of a building of any considerable height or size the elevation ofthe materials of whatsoever kind entering into the structure or for use in the erection of the structure, entails large expense and. if the hoisting derricks used in the erection of the building frame are employed for the purpose the workers are frequently inconvenienced by the use of such derrick for elevating the materials when the same derrick may be required for handling and placing the individual parts of the frame, or other materials, as required. In the use of aboom derrick for elevating such material also the distance between the boom and the load is so great during a part ofthe upward travel of the load that-the load may swing dangerously through a wide arc, and may endanger 1 the lives of workmen, or parts of the structure previously erected.

'Inthat class of building elevators in which a platform or cage is used to hoist the materials loaded thereon, additional handlingis necessary at the bottom of the lift.

and the danger of part-of the loads falling therefrom is constantly present. Furthermore where either a boom hoisting derrick or a cage elevator is used, a large amount of labor is entailed in elevating the derrick from floor to floor as the building progresses, or in extending the frame of the cage elevator upwardly as the work progresses, in

. eitherinstance incurring-expenseand delay.

Specification of Letters Patent.

thereof.

Patented Mar. 1%, 1916.

1913. Serial No. 796,140.

delivering the load at any required place upon the structure, utilizing power therefor. It is also an object of the invention to afford a construction whereby the load is sup ported during the'entire period of elevation in close proximity with the hoisting crane and thereby held from swinging outwardly from the building thereon to endanger street traffic or swinging inwardly sufiiciently to entail trouble or danger.

It is also an object of the invention to af- I ford a construction whereby an upwardly traveling crane is provided, and movably mounted upon a sectionally constructed up right, the sections corresponding approximately in length with the story heights of the building.

It is an object of the invention to afford a sectional racked upright adapted to be extended section by section as the building height increases and having slidingly mounted thereon a hoisting crane adapted to receive its load when at the bottom of said upright and to travel upwardly with the load to the required height and then to permit the load being swung inwardly upon the floor of the structure, and equipped with safety detents engaging in said rack and acting to preventdownward movement of the crane, except when manually released.

Other important objects of the invention will hereinafter more fully appear.

The'invention in a preferred form is illustrated in the drawings and hereinafter more fully described.

In the drawings: Figure l is a detail view in side elevation of a device embodying myinvention. Fig. 2 is an enlarged fragmentary side elevation of one of the frame uprights of a building and the hoisting mechanism thereon, showing the same partly broken away. Fig. 3 is a face view Fig. 4 is a fragmentary section taken on line 4-4 of Fig. 2. Fig. 5 is a section on line 5-5 of Fig. 2.

As shown in the drawings: A building frame of structural steel or other suitable material fcomprising suitable horizontal floor members, beams or'joists 1, and uprightsor posts 2, and constructed as usual orin any suitable manner, is indicated in a state of "partial completion. Secured at the outer side of one of the uprights or posts 2, at any convenient position to permit delivery of the material at the bottom thereof, is the upright way 3, of the elevator- This, as shown, comprises a column, preferably metallic, for example of steel, rectangular in cross section and of considerable width as compared with its thickness,

and having recessed in the outer face thereof upwardly facing ratchet teeth 4. Said upright column or way is spaced outwardly from the column or post 2, by means of blocks 5, interposed between the same and the post at each successive floor in the building or at convenient intervals in the building height, and is constructed of a plurality of duplicate interchangeable sections which are lapped or spliced together or in any manner suitably and rigidly connected in alinement to afford a substantially continuous column affording a central continuous outwardly and upwardly facing ratchet 4 'bar provided with a yoke 9, at its inner end to engage on each side of a central post, as shown in Fig. 1, inclines upwardly to the upper end of the upper section of the ratchet bar and is rigidly bolted thereto and pro jects beyond the same as shown in Fig. 1, and carries at its outer end a hoisting sheave 10. Mounted to slide on said ratchet bar column 3 is a frame 11, which may be constructed of cast steel or any suitable material, and is recessed on its rear side to a depth to receive the ratchet bar or column 3, therein and engaged on the rear side thereof and overlapping the rear face of said ratchet bar column are plates 12, which confine said frame to said ratcheted column, but permit the'same to slide freely thereon. Integrally connected to'the upper end of .the frame 11 and extending upwardly above the same and in the plane therewith for a sufficient distance is a crane arm 13, the upper end of which is turned outwardly and extends for some distance from the said frame and is provided with a plurality of apertures at different distances from said frame to enable the hoisting cable 14, to be suitably applied thereto and approximately at a point in alinement with the center of gravity of the mass to be hoisted. On the outer face of said frame 11 and integrally connected therewith are sleeves 15 positioned near the top of said frame and at each sidethereof and with the axis thereof extending vertically, and directed beneath each of said sleeves and also integral with the frame are outwardly projecting bosses 16, each having'i a cylindric bore therein corresponding with the bore of said sleeve. Rotatably mounted in said sleeves and the apertured members afforded by the bosses 16, are cylindric shafts 17, which are each provided on the upper end with an integral upwardly and outwardly extending crane arm 18, also pro vided with a plurality'of apertures in the length thereof, as shown in Figs. 1. and 2. As shown, the lower end ofeach of said shafts 17, is mounted upon a suitable ball or other anti-friction, bearing 19, seated inthe socket therefor, and, if preferred, a ballor 5 other antifriction bearing 20, may be provided at theupper end of each of said sleeves and whichengage the shaft and also are engaged by a flange 21, secured at'the junction of said crane arms with said shafts an arm 24, which extendsoutwardly and is o, and integrally connected with which is.

provided'iat its outer end with a weight 25,

which acts to hold said pawl normally in engagement with the teeth on said ratchet bar, asshown in Fig. 2. Mountedin said slot is a'pivoted detent 26, the inner end of which bears against a portion of the frame to hold the detent normally extended in horizontal position, as shown in Fig. 2, and

inposition to receive therein and engage the suitably shaped upper end 27, of the pawl '23, to hold the pawl retracted when desired.

A lever 28, is engaged on th h ft 22 111g SaId pawl 23, and a lin 29, 1S engaged on the outer end of said lever, and engaged near the top of the frame 11, asshown' in Figs. 2 and an, permit said pawl 23, to be retracted when it is desired to lower the'device, such release of the pawl from the ratchet teeth necessitating the engagement of the upper end 27, of the pawl by the detent26; g

A lever 30, is secured on the same shaft with, or in any suitable manner, to the detent 26, to enable the loader to release said detent preparatory to loading,thereby 'permitting the pawl 'to again engage the ratchet bar. A hoisting cable 14, leads downwardly from the sheave 10, through any suitable arrangement of sheaves or pulleys to a drummounted on the shaft 32, of .anysuitable power winch, of course driven from any suitable source or power."

Journaled in suitable bearings at, said post- 2, and adjacent to the extremity. of the winch shaft '32, is a vertical shaft 35 which extends in sections, each'appi'oximately of floor height in length to the height of the gramme building required. :Said shaft 35, is providedaat its .lowerend with a bevel gear 3.6, which meshes with a bevel gear '37, on the shaft 32. Secured on the shaft 35, above on the crane arm each floor .-is a :drum 38, in which, if desired, the coupling "of the shaft ends may be effected.

Snatch blocks 39, are secured where .required on the various posts 2, affording the uprights :of the frame or on any suitable part .of the frame. A line :orcable 5L0, is provided for the respective hoisting drums for shifting the .load when deposited on the floor where required. For this purpose portable track in relatively short sections may be used where required on the false floor of the building and a truck of any suitable kind is mounted on said track to receive the load, or, if preferred, the load may be deposited upon suitable rollers on the false floor.

The operation is as follows: The building material is delivered as usual in loads at. the foot of the ratchet bar column 3, the operator trips the pawl from the ratchet bar column, the detent 26 holding said pawl from reengagement until the hoisting frame is lowered to the load. The loader then, by means of the lever 30, releases the detent 26, from the pawl 23, whereupon the pawl again immediately engages the ratcheted column to support the hoisting frame at the desired height above the load. Suitable cables are now passed about the load, preferably at each end thereof,an-d are engaged upon a suitable equalizing bar 41, depending from one of the crane arms 18, as shown in Fig. 1. Conveniently one of the crane arms 18, may be equipped with such an equalizing bar 41, and the other of said arms may be equipped with a suitable chain or cable tackle, to engage about such material as mav not be hoisted conveniently on the equalizing bar when loaded. The power is applied on the hoisting arm 13, which is integral with the frame 11 through the medium of the cable 14, the point of attachment of said cable on said hoisting arm being at any of the apertures in the length thereof and dependent usually upon the point of attachment of the equalizing bar or cable which supports the load 18, and to enable such point of attachment to the cable 14, to be substantially in alinement with the center of gravity of the mass to be lifted. The crane arm maybe held from swinging if desired during the hoisting operation by a turn of cable or line thrown around the hoisting arm and crane arm which may be quickly released when the load has reached the desired elevation. As the load rises the awl is at all times in engagement with the ratchet teeth in position to instantly support the. frame and load in case of accident.

When the desired floor is reached the crane arm 18 is swung laterally and inwardly, and the load is deposited upon a low car or truck 4-3 supported on the sectional track, whereby it .may be pushed to any desired point or may be drawn to any desiredpoint by means of thecable 40, which is engaged thereto and passes through any suitable arrangement of the snatch blocks 39, before described, thence led back to the drum 38, whereby the power of the hoisting engine or motor may be applied conveniently to de liver the load to the desired point, or rolls may be used beneath the load, and the cable 40, is applied as before described to direct the load to the required point. Having deposited its load, the hoisting frame may be returned for re-loading by the operator pulling upon the trip line 29, to engage the end of the pawl beneath the detent 26, thus permitting the device to descend to the required position for reloading. When the frame is extended for the next upper floor it is Only necessary to build on an additional ratchet bar section and to shift the hoisting beam 8 upwardly to engage the top thereof,

as before described, to enable the device to be used for the next succeeding floor, and this extension can be effected without material delay or interfering with the use of the device.

Of course it is to be understood that I have shown buta prefererd form of my invention, although the invention is obviously capable of numerous variations and modifications from the particular and preferred embodiment illustrated and described herein. I therefore do not purpose limiting myself otherwise than necessitated by the prior art.

I claim as my invention:

1. In a device of the class described, a ratchet bar column, a frame slidably mounted thereon, a pawl engaged on the frame and normally engaging the ratchet bar column to support the frame thereon. a crane arm mounted on said frame, a hoisting beam supported above the same from the upper end of said column and from the building frame, a sheave thereon, a cable engaged through said sheave and leading to a source. of power at one end and at the other engaged with said frame, and means permitting the pawl to be tripped to permit descent of said frame.

2. In a machine of the class described, a single ratchet bar column constructed in duplicate interchangeable sections, each in length approximately equal to a floor height of a building, means engaging the same to an upright or post of a building, and a hoisting beam engaged at its inner end to a post of the building and near its outer engaged at the top of the ratcheted column and projecting therefrom, a sheave on the outer end thereof, a sliding frame engaged on for engaging the column.

3. In a device of the class described, a

column, a frame slidable thereon, swinging crane arms on said frame provided with apertures at various distances in the length thereof over said frame, a hoisting arm integral with the frame and eXtending over the crane arms and also provided with apertures therein corresponding with those of the crane arms, a sheave supported above the frame, a cable led therethrough and at one end connected with the source of power and at the other end connected with the hoisting arm at one of the apertures therein substantially in alinement with the center of gravity of the mass to be supported, a safety device acting to support said frame from descent at any pointon said column, and means for releasing said safety device to permit descent of the frame.

4. A device of the class described, embracing a frame, a ratcheted column on which said frame'is slidably-supported, a

crane arm journaled on each side of said frame at the face thereof, a hoisting arm integral with the frame extending over and between said crane arms, a sheave supported at the top of the column, a line led there: through and at one end connected with the source of power and at the other end connected with the hoisting arm at a point approximately in alinement with the center of gravity of the load to be elevated, and a releasable detent mounted on the frame and acting normally to engage the ratcheted column to support the load at any point in the length thereof. 5. In an elevator construction, a sectional guide member comprising interchangeable interfitting members connected together, a boom resting on the top thereof, a frame slidable on said guide member, means trained over said boom and connected to said frame to elevate the frame, and davits journaled on said frame adapted to carry a load and to be swung-into. a position on either side of said guide member.

6. In an elevating. device. for buildings underconstruction, sectional guide and supporting members adapted to-be built up simultaneously with the building, a frame slidableon said guide member and adapted to be supported thereby, a boom resting on the uppermost of said guide sections and anchored to the building, a cable trained thereover and attached to said frame to elevate the same, and pivotally mounted ele ments on said frame for carrying a load and adapted to be swung from a position with.- out the building. during elevation of the frame to a position within the building at a desired floorv to receive or deposit a loadi In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

Witnesses:

CHARLES W. HILLs, Jr., FRANK K. Henson.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G. I I

HENRY oULn;

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