|Publication number||US2409929 A|
|Publication date||Oct 22, 1946|
|Filing date||Jan 23, 1945|
|Priority date||Jan 23, 1945|
|Publication number||US 2409929 A, US 2409929A, US-A-2409929, US2409929 A, US2409929A|
|Original Assignee||Cohen Harold|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (3), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Oct. 22, 1946.
H. COHEN APPLIANQE Filed Jan. 23, 1945 lz e l Jzizral'd Cohen IN VEN TOR.
Patented Oct. 22, 1946 UNITED STATES PATENT OFFICE I V 9 2,409,929 I APPLIANCE Harold Cohen, Elizabeth, N. J.
Application January 23, 1945, Serial No. 574,092
This invention relates to an appliance which may be used advantageously to support a hoist on parts of a structure in the course of erection, so as to enable the hoisting of the structural components and other materials to be used in the erection of the structure, such as a tower, frame- "WOlk and the like.
The principal object of the invention is the provision of improvements in a device of the indicated character, whereby a hoist or the like may be supported or mounted or put into position for use, and also be shifted from one position of use to another, quickly and easily.
With the foregoing, other objects of the invention will appear in conjunction with the combination, construction and function of the parts hereinafter described and illustrated in the accompanying drawing, in which- Fig. 1 is a side elevational view of a hoist attached for use in accordance with the invention, to parts of a tower in the course of erection, by way of example.
Fig. 2 is an enlarged side elevational view of th hoist detached, portions of the standard being broken away.
Fig. 3 is a sectional view taken on the line 3-3 of Fig. 1, parts of the tower being shown in dotand-dash lines.
Fig. 4 is an enlarged sectional view on the line 4-4 of Fig. 5, the clamp being shown engaged in full lines, and the hinged part of the clamp being shown open in dotted lines.
Fig. 5 is a side View of the lower hoist supporting device applied to parts of a tower, portions of the device being broken away, and the parts of the tower being shown in dotted lines.
Fig. 6 is a sectional view taken on the line 6-6 of Fig. 5.
A hoist or boom Ill shown most clearly in Fig. 2 is selected to illustrate the use of the present invention. The hoist comprises a standard or mast II whose upper end portion is arcuate or curved as at I2. The standard II is constructed of cross-sectionally round tubing. The standard may be extensible as to length, or it may be mad non-extensible. The upper end portion of the standard has pulleys I3 mounted thereon to accommodate a hoisting cable I4 for carrying out the hoisting and lowering of the structural components and other materials to be used in the erection of a structure, such as a tower. Sections of a tower already assembled are designated I5 and appear in Fig. 1. The hoist is attached to certain of the sections I5 for use, and is capable of being shifted from the position of 2 use shown, upwardly, to another position in the course of the erection of the tower to the required height.
The hoist is detachably supported or mounted in position for use by a plurality of appliances or devices [6 of the present invention which are similar except in one respect to be explained hereinafter.
The device comprises a bearing member I1 and a clamp I8 on said bearing member. The member I I consists of sleeve. The clamp I8 comprises jaws I9 and 20 respectively. Each of the jaws is approximately semi-circular. The jaw I9 is fixed to the sleeve IT, as by welding, and extends radially therefrom. The jaw 20 is hingedly connected with the jaw I9 by means of eyes 2I on the jaws, respectively, and a pintl 22 which extends through said eyes 2|. The jaw 20 has a lateral extension 23. A slot 24 in the extension accommodates a screw stud 25 on the outside of the sleeve I1 and projecting radially therefrom. A wing-nut 26 cooperates with the stud 25 and the extension 23 to retain the jaw 20 in a closed or clamping relation to the jaw I9. The jaw I9 has a depending offset portion 21 which is provided by reason of a semi-circular piece of metal welded to the jaw or the jaw I9 may be of cast in one piece to provide the offset portion 21. This oifset portion has spaced notches 28 therein opening downwardly through the lower edge thereof.
The sleeve H of each device I6 is designed and adapted to loosely surround the mast II. The clamp I 8 is designed and adapted to engage a vertical component or upright 29 of a section I5 heretofore mentioned, while the offset portion 21 engages two other components or horizontal braces 30 of a section I 5, by reason of the notches 28 which receive said braces 30 respectively, as shown most clearly in Figs. 3, 4-. and 5.
The hinged jaw 20 of the clamp I8 may be opened as shown in dotted lines in Fig. 4. The clamp then may be brought into position with respect to the upright 23. The jaw 20 is then closed about the upright 29 after which the wing-nut 26 is applied to the stud 25 to securely clamp the device I 6. It is understood the jaw I9 of the clamp will be brought down to a position in which the braces 39 are in the notches 28. Thus the mast I I of the hoist is turnably engaged with the devices I 6. l
The one respect in which the devices I6 differ is in the provision of an abutment 3I on the sleeve I! of one of the devices I B. The device with such abutment is used at the lower end of the mast I I. The abutment is in the form of a disk of metal welded or otherwise secured to the sleeve H to serve as a base. The abutment has a central hole 32 therein to receive a screw bolt 33 carried by a dished anti-friction plate 34 welded or otherwise secured to the lower end edge of the mast H, as shown in Fig. 5. The bolt 33 is loosely received in the hole 32 and keeps the mast I I from moving upwardly. The abutment 3| sustains the weight of the hoist and any load carried by the hoist.
If desired, collars 35 and 36 may be secured to the mast in proximity to the upper and lower ends respectively of the upper device l6 or the device which does not have an abutment 3E. The collar 35 may be made to rest directly upon the upper end of the sleeve H in order to help in sustaining the weight of the hoist and its load. The collar 36 may be used to help the bolt 33 in keeping the mast from moving upwardly.
From the foregoing, it will be apparent that the devices I fi enable the hoist to be attached for use quickly and easily; that the hoist may be shifted upwardly or downwardly as the occasions require; that the notched offset portion 21 may be engaged with cross braces by the mere act of letting the hoist-down; that the offset portion 21 prevents the-devices [6 from turning with respectto the structure being erected; and that the hoist may 4 be turned in the sleeves H, or in other words, the hoist may be turned about the axis of the mast I l to enable the load to be swung over the top of the structure in the course of its erection, thereby facilitating the handling and assembling of the structural elements and other materials used in the construction of a tower or analogous structure.
I claim: 1. An appliance for detachably supporting a standard for turning movement on parts of a fixed structure, said appliance comprising a bearing sleeve adapted to loosely surround the standard, a fixed jaw on the sleeve, a hinged jaw on said fixed J'aw cooperating with the latter to engage one of said parts of the fixed structure, means to secure the hinged jaw to the sleeve in functioning position, and means on the fixed jaw to engage other parts of said fixed structure to prevent the appliance from turning with respect to 'said structure.
2. An-appli'ance as set forth in claim 1, wherein s'aidlastmeans consists of a notched portion on said fixed "j aW.
3. An appliance as set forth in claim 1, and an abutmenton said sleeve which maybe engaged by the'lower end 'of said standard.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3610432 *||Mar 20, 1969||Oct 5, 1971||Kuribayashi Sadatomo||Marine derrick system|
|US4597498 *||Dec 14, 1984||Jul 1, 1986||East/West Industries, Inc.||Mobile maintenance stand and crane apparatus|
|US5758785 *||Jun 17, 1996||Jun 2, 1998||Spinosa; Dominic||Lifting system|
|U.S. Classification||248/230.4, 212/347|
|Cooperative Classification||B66C23/28, B66C23/203|
|European Classification||B66C23/20P, B66C23/28|