US1303322A - Daniel a - Google Patents

Description

1., F. HUNTER.

I HOISTING MEANS.

APPLICATXON FILED rmvl4. 191s.

Patented 313 131919.

'2 SHEETS-SHEET I.

T. F. HUNTER.

HOIST'ING MEANS. APPLICATION man Nov. 4. ms.

Patented May 13,1919

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE;

THOMAS F. HUNTER, OF CHICAGO, ILLINOIS, ASSIGNOR TO E. W. SPROUL COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

HOIS'I'ING MEANS.

Application filed November 4, 1918.

To all whom it may concern Be it known that I, THOMAS F. HUNTER, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Hoisting Means, of which the following is a specification.

The invention relates to an elevating or hoisting means which is principally, although not exclusively, used by building contractors.

It is an object of the invention to provide a hoisting apparatus which is so arranged that an uneven loading of the'carrier does not effect tilting thereof.

It is a further object of the invention to provide a carrier which is raised by a plurality of cables exerting a lifting force on 'both sides of the carrier so as to insure its level raising or lifting.

It is also an object of the invention to provide a hoisting means which is adapted to elevate long flexible members without permitting deflection of said flexible members during the elevating movement, which would necessitate the lifting of the carrier considerably above the level of the platform on which the flexible members are to be dis charged.

To the accomplishment of the objects stated and others that will become apparent upon perusal of the description, the preferred embodiment of the invention com prises a means set forth in the following specification, particularly pointed out in the appended claims and illustrated in the annexed drawings, the annexed drawings, however, disclosing merely one of the various ways in which the principle of the invention may be utilized.

Insaid drawings Figure 1 is a perspective elevational view of a hoisting apparatuseonstructed in accordance with my invention.

Fig. 2 is a horizontal section of the devlce.

Fig. 3 is a front view of the hoisting element. V

Fig. 4 is a Side Fig. 5 is a top view of the same. plan vlew of a cradle used in conjunction with the hoisting element In elevating long flexible members.

. Fig. 6 is a front view of the parts shown in Fig. 5. a

Specification of Letters Patent.

Patented May 13, 1919.

Serial No. 261,040.

Referring particularly to Figs. 1-4, 1 designates a plurality of members arranged on the ground and serving as carryin means for the hoisting frame by means 0' which articles to be lifted are elevated. The members 1 are superposed by a transverse memher 2, which forms a carrying element for uprights, generally designated by 3 and 7 and spaced, a suitable distance in accordance with the length of the article carrier or hoisting element. The upright 3, as indicated particularly in Fig. 2, comprises an outer member 4 of oblong construction which at the front edge is flush with a member 5 and secured to its inner side. A member 6 spaced a short distance from the member 5 is secured to the outer member 4 but extends therebeyond. The space' defined'by members 5 and 6 constitutes a guide slot or groove and is provided for the reception of a member of the carrier or hoisting means, for which purpose the groove is well greased so as .to permit raising and lowering of the hoisting means without undue frictional resistance. The coacting upright 7 of the same construction as upright 3, is maintained in fixed relation to the latter by spacin members 8 and tie-rods 9, which extend t rough the members 6 and 4 (Fig. 2) and through blocks 10 to thereby constitute a rigid structure. Lattices 11 and 12 reinforce the structure and a plurality of braces 13 are secured to the structure and to the building wall whereby the frame is maintained 1n vertical position and secured against movement.

The hoisting element comprises vertical members 14 of a width to slidingly' lit in the inner grooves of the uprights 3 and 7 and these members are interconnected by the connecting beams 15 and 16, which together with the vertical members 14 constitute the frame of the hoist. At the center the frame is braced by the vertical member 17 and by diagonal beams 18. At a distance from this frame a bar 19 is rovided which is connected to theframe by the oblique members 20 and connecting pieces21, and in addition dia onal connectin pieces 22 rigidly secure the cam 19 to the rametof the hoist. Skids- 23 are supported at the top of the vertical members 14 and the longitudinal member 19, and in oblique position for the purpose. of enabling the load raised thereon to slide oil whenever the hoist has reached discharging position.

As shown in Fig. 1, the upright members 3 and 7 are equipped with skids 24 which bridge the space between the hoisting element and the discharging platform and form a continuation of the skids 23 of the hoist when the latter has reached the topmost or discharging position. The means for raising or lowering the hoist includes a drum 25, arranged at a suitable location in the vicinity of the hoisting structureand driven from any source of power, not shown. The uprights 3 and 7 are respectively provided with guide sheaves 26 and 27 at the lower extremity thereof, and suitable guide sheaves 28 and 29 are arranged at the upper extremity of said upri ht, members. Two cables 30 and 31, winding on the drum 25, are respectively trained aroundthe sheaves 26 and 28, of the upri ht 7, and around the sheaves 27 and 2gof t e upright 3, and are secured to the adjacent ends of the hoist. From the foregoing it is obvious that upon rotation of the drum inproper direction the hoist is raised by a lifting pull exerted at both ends thereof, so that at uneven loadin of the hoist tilting thereof is preclude The tilting of the carrier is a disadvantageous feature incident to the known hoistingdevices in which one cable is employed secured to the middle portion of the carrier whereby the latter is raised.

In the construction of buildings it is frequently necessary to hoist long flexible members such .as reinforcing rods, steel beams and the like, which are considerably lon er than the carrier and which, according to -.t e practice followed, overhang the same and make it necessary for the carrier to be raised until the overhanging and downwardly extending ends of the flexible members are flush with the discharging platform. To obviate the necessity of raising the hoist above the discharging platform and" to prevent the flexible members from extending beyond the hoisting carrier, a cradle, generally designated by 32, is provided which is arranged on the carrier and in conjunction therewith serves as a lifting member for long flexible rods or beams. As

indicated in Figs. 5 and'6' the cradle comprises longitudinal members 33 secured to central members 34, and a plurality of spacing blocks 35 are arranged at roper distances and-interconnected with tiie members by rods extending therethrough. The inner ends of the members 33 abut the oblique members 21' of the hoist to form arigid structure therewith. The longitudinal members of the cradle when arranged on the hoistoccupy different horizontal planes to provide for the skidding effect of the load carried thereon and when the cradle is used in connection with the hoist the skids 23 said carrier.

.said auxiliary platform includin lo may be dispensed with. To insure proper movement of the cradle together with the carrier a plurality-of vertical guide beams 36 are arranged to contact with the inner longitudinal members of the cradle and pro erly braced to the buildingwall in any pre erred or convenient manner. The operation of the improved hoist is thought to be obvious from the foregoing description and further reference thereto 1s thought superfluous.

While the drawings disclose a preferred embodiment of the invention it is, of course, understood that many chan es and alterations may be made without eparting from the spirit of the invention, and it is not .theintention of limiting the invention to the details as shown, butto include all modifications constituting departures within the scope of the invention as defined by the appended claims.

I claim:

1. In a, hoisting apparatus, in combina- 'tion, a pair of uprights, a carrier reciprorier and extending beyond the ends of said carrier to receive long articles, and means for exerting a lifting pull to b'oth ends of 2.,In a hoisting apparatus, in combination, a pair of upri hts, a discharging platform, inclined ski s connectin the upper ends of said uprights with said platform, a carrier reciprocatingly fitted between said uprights, aloading plat-form detachably ar-- ranged on said carrier and extending beyond the ends thereof to receive long articles, said latform carrying the load so as.- to permit its rolling off onto the skids when in discharging position, means for exertmg a lifting pull to both ends of-said carrier, and means for guiding the said loading' platform durin its reciprocation. v

3. In a hoisting apparatus, in coinbination, .a pair of uprights provided-with in.- ner vertical grooves, a carrier reciprocat ingly fitted between said uprights'and comprislng vertical members guided in said grooves, side members supported on said 116 vertical members, an auxiliary "platform adapted to be placed on said side me b nal members bearing against sai s1 bers, connecting beams resting on .'s d side, 120 members and interconnecting thelongitudi nal members of said platform, andmeans for exerting a lifting pull-toboth ends of said carrier.

4. In a hoisting apparatus, the combina tionof a pair of uprights, a carrier re ciprocatingly fitted between said uprights, said carrier comprising a'central carrying portion inclined in direction toward theplane of the uprights, and lateral portions 1'30 catingly tted between said uprights, said projecting laterally beyond the uprights inclined toward the central portion and 10 and inclined toward the central portion. toward the plane of the upri hts.

5. In a hoisting apparatus, the combiner V In testimony whereof I a my signation of a air of uprights, a carrier reciproture in the presence of two witnesses.

carrier comprising a central carrying por- TFIOMAS H tion inclined in direction toward the plane Witnesses: of the uprights, and lateral carrying por- 'DANIEL A. BRENNAN,

tions projecting beyond the uprights and IRMA BECK.

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