US2581716A - Construction of drum for hoists, winches and the like - Google Patents

Description

Jan. 8, 1952 M. F. SASGEN 2,581,716

CONSTRUCTION OF DRUM FOR HOISTS, WINCHES AND THE LIKE Filed March 22, 1946 I 2 SHEETS-SHEET l I N VEN TOR.

Matthias F. Sasgen A TTORNEYS M. F. SASGEN 2,581,716

CONSTRUCTION OF DRUM FOR HOI-STS, WINCHES AND THE LIKE Jan. 8, 1952 2 SHEETS-SHEET 2 Filed March 22, 1946 INVENTOR. Matthias 1' 621 611 A TTORNEYS Patented Jan; 8, 1952 CONSTRUCTION OF DRUM FORT HOISTS, WINCHES AND THELIKE Matthias F; Sasgen, Chicago,v Ill., assignor to SasgenDerrick-Cm, Chicago, 111., a corporation of Illinois Application March 22, 1946, Serial No. 656,421

1 1,-Claim.

This invention relates to the construction oi drums of the character'used in hoists, winches and the like, and the invention relates particularly tothe manner of assembly of the separately formed elements of such'drums;

Drums of the aforesaid character are commonly-afforded'by a central barre1 of cylindrical form having separately formed-flangesrigidly secured to thelopposite ends'of 'the barrel at right angles tothe-axisof 'thebar-rel. and these flanges are so formed as to provide mounting hubs concentric 'wlth the axis-"ofthe-barrelwhereby the drum may be supported-forrotative movement. Such drums are utilized'for operating a hoist or winch cable which is arranged-tote woundabcut the barrel of the drum as anincident to rotative movement of the-drum,- and the forces required to impart the desired rotative movements to the drum or to hold the'drum against rotation are applied to one or the other of the flanges of the drum. It will thus be'clear'that the forces that are applied between the flanges and:the barrel of the drum are primarily of a torsional character which tend'to-disrupt-theconnection between the flanges and the barrel of the drum, but in addition to' such: torsional 1 forces, the, load: applied to the cablethat is=beingwoundiupon thebarrel'of the drum also: acts in what might be termed shearing relationship appliedv transversely with respect to the axis of the drum andlthe tendency of such forcesis' also to disrupt the-connection between'the flangesandJthe' barrel of the drum.

Because of the great forces that are-thus applied to drums oftheaforesaid-character, it has been customary: in the-past to resort to, rather elaboratesan'd eXpensive-methodsof connection of the barrel' to the flanges, and to simplify and reduce the costaofa efi'ec-ting'v such connection of the barrel ztothe:endflangesis the. primary object of the present invention.

In practice it hasbeenfound that it is advantageous to make the flanges of drums of the aforesaid character from amaterialsuch as malleable iron, and: this has in the past ledto the conclusion that the elements of such a drum could not be satisfactorily secured together by processes'of welding, and a further object of the present invention-is to enablesuch parts to be eiiectively and strongly secured together by welding processes thatQmaybereadily; andeasily performed. Anotherand related. object is to. enable theelements of-such a1drumtobesecured togethor by processesof weldingin sucha manner. that the. effectiveness; ofv the welded bond. with. the m'alleableiron flanges. is .renderedimmaterial. A further and"rel'ated' object is to secure the ele- Other and further objects'of'the: present invention will be apparent fromthe following descriptionzand claimiandareillustrated in the accompanying drawings which byway of illustration, show preferred embodimentsandxthe principles thereof and'whatIinow consider to be the best mode inwhich Ihave' contemplated applying thatv principle. Other embodiments of the invention embodying the-same or equivalent principles may be used and'structural changes may be made as desired" by those skillediin the art without departingv from the present invention and the pur view of the appendedclaim.

Inthe. drawings:

Fig. l is a side elevational view of adrumconstructed'in accordance with the invention, aportionofrthe view being-inlongitudinal section;

Fig. 2 isa sectional View of one flange;

Fig. 3 is an'end view of the flange;

Fig. 4'is a side elevational view taken partially in longitudinal section and illustrating another drum embodying the features of the invention;

Fig. 5 is'an elevational view of the inner side surface of one of the end flanges of the drum of Fig. 4;

Fig. 6 is a fragmental perspective view taken partially in section and illustrating the inner surface-of one'of the end flanges in association with the barrel ofthe drum of Fig. 4;

Fig. 7is-an elevational View of the drum of Fig. 4, taken partially. in section; and

Fig. 8 isa fragmental sectionalview taken substantially alongthe line. 8-8 ofili'ig'. 5.

In the-formchosen for disclosure in Figs. 1 to 3 of thedrawings, theinvention; is embodied in a drum l0 adapted for-use in. hoisting winches and the likeand. having a drum barrel !2 with endflanges and I5 secured toopposite ends of the barrellz, andit is with the mountingthe end flanges Mland. It. onthe. barrel l2that the present invention iseconc'erned;v Drums of the character. shown. herein are utilized for hoisting extremely? heavy loads and therotative mounting of'the drum is afforded by means such asa 3 mounting shaft extended axially through axial mounting hubs i8 and 20 formed on the flanges I4 and I6, respectively. The operation of the associated hoisting cable is effected by winding the same about the barrel l2, and the requisite starting, driving and braking forces are applied to one of the flanges, as the flange I6, the driving forces being applied to internal gear teeth I! while stopping or locking forces are applied as by a braking or locking dog to teeth I8 formed exteriorly on the flange l5. Such .a mode of use of the drum makes it necessary that the connections of the barrel I2 to the two flanges I4 and I6, and particularly the flange I6, be extremely rugged and strong, and in accordance with the present invention this is accomplished in a simple and inexpensive manner.

by a welding operation wherein welding rod material is welded as at 35. Fig. 1, onto the end Thus under the present invention the two I flanges l4 and I6 are formed from malleable described in detail with respect to the flange I6.

Thus, as will be evident in Fig. 2, the flange l6 has a generally flat inner end face 22 against which the flat annular end face 24 of the barrel l2 may be disposed in a concentric relation with respect to the hub 20, and means are'afforded on the face 22 of the flange l6 for holding the barrel against lateral displacement from such concentric relationship. In the form shown in Figs. 1 to 3 such means are afforded by a plurality of circumferentially spaced axially projecting lugs 28 which are formed integrally with the flange and are disposed for engagement with the outer surface of the barrel I2. The barrel I2 is formed with the annular end surfaces 24 normal to the axis of the barrel, and ordinary steel pipe or tubing may be employed as the basic material for the barrel l2 and may be cut to the desired form by relatively simple operations.

When the end of the barrel [2 has thus been located within annular row of lugs 28 so as to be thereby held against lateral displacement with respect to the flange I6, means are, under the present invention, rendered effective to hold the flange l6 and the drum I2 against relative endwise displacement, thereby to hold the end portion of the barrel l2 in the desired operative relationship with respect to the lugs 28. In accordance with the present invention this is eifected by means of welding, and this is accomplished in such a way that an extremely high strength is afforded for resisting torsional displacement of the barrel I 2 with respect to the flange [6. Thus the flange l6 has a plurality of circumferentially spaced arcuate slots 3t formed therethrough in such positions as to be disposed opposite the end surface 24 of the barrel I2, and these slots 30 are tapered as will be evident in Figs. 1 to 3, so as to be of greater width and length on the outer face of the flange I6 than they are on the inner face 22 of the flange. In the form of the invention shown in Figs. 1 to 3, the lugs 28 are formed so as to be or keys are formed in the respective slots 30 surface 24 of the barrel I2, and the deposit of welding rod material is continued to such an extent as to completely fill the openings 30. Thus the tongues or keys 35 are of dovetail form, so as to thereby mechanically interlock with and resist endwise withdrawal of the flange I B, and because of this, the character or strength of the welded bond between the welding rod material and the malleable iron or other substance is rendered immaterial.

In the form chosen for disclosure in Figs. 4 to 8 of the drawings, the invention is embodied in a drum IOA having a drum barrel I2A with end flanges MA and IBA secured to opposite ends of the barrel 12A. The rotative mounting of the drum is afforded by means such as a mounting shaft extended axially through axial mounting hubs I8A and 20A formed on the flanges MA and ISA, respectively. The operation of the associated hoisting cable is effected by winding the same about the barrel IZA, and the requisite starting and driving forces are applied to one of the flanges, as the flange |4A which in such an instance constitutes what is usually termed the gear or drive flange of the drum, while the stopping. or looking forces are applied to the other flange, as the flange ISA which is in such an instance termed the brake flange of the drum.

The two flanges MA and WA are formed from malleable iron and while generally similar in form, the two flanges MA and WA may have different rim constructions and widths to adapt the same to the different uses and functions required. Thus, as will be evident in Figs. 4 and 6, the flange ISA has a generally flat inner end face 22A against which the flat annular end face 24A of the barrel I2A may be disposed in a concentric relation with respect to the hub 20A, and means are afforded on the face 22A of the flange I6A for holding the barrel against lateral displacement from such concentric relationship. In the form shown in Figs. 4 to 8 such means are afforded by a plurality of circumferentially spaced axially projecting lugs 26. which are formed integrally with the flange and are disposed for engagement with the inner surface of the barrel I2A.

When the end of the barrel I2A has thus been located in an embracing relation with respect to the. annular row of lugs 26 so as to be thereby held against lateral displacement with respect to the flange IBA, the flange ISA and the drum IZA are secured against relative endwise displacement by means of welding that is accomplished in substantially the same manner as hereinbefore described. Thus the flange IBA has a plurality of circumferentially spaced arcuate slots 30A formed therethrough in such posi tions as to be disposed opposite the end surface 24A of the barrel !2A, and these slots 30A are tapered as will be evident in Figs. 4, 7 and 8, so as to be of greater width and length on the outer face of the flange IBA than they are on the inner face 22A of the flange. With the parts held firmly in the relation shown in Figs. 4, 6 and 7, a plurality of retaining tongues or keys 35A are formed in the respective slots 30A by a welding operation wherein welding rod material is welded as at 36A, Fig. 7, onto the end surface 24A of the barrel HA, and the deposit of welding rod material is continued to such an extent as to completely flll the openings 30A.

Thus the tongues or keys 35A are of dovetail form, so as to thereby mechanically interlock with and resist endwise withdrawal of the flange 16A.

From the foregoing desecription it will be ap parent that the barrel of the drum may be formed from commercially available steel tubing that may be cut at right angles to its axis by easily performed machine shop operations, and this steel drum may be readily and easily associated with the malleable iron flanges. by process of welding in such a manner that the character of the welded bond between the welding material and the end flanges is of no particular moment. The present invention so relates the welded material to the steel barrel that such welding material form a plurality of tongues or keys that are mechanically interlocked due to the tapered form of the openings so as to thereby hold the end flanges on the barrel against endwise separation with respect to the barrel. Because of this endwise locking action, the effectiveness of the annular rows of lugs is assured, and these lugs serve to prevent relative movement of the barrel and the flanges in a direction perpendicular to the axis of the drum. The keys that are formed from the welding material will of course have an extremely good welded bond with the end edges of the barrel, and because of this, the torsional forces that are effective between the barrel and the end flanges of the drum are taken in shear by the material of the keys, and this results in an exceedingly high resistance to such torsional forces.

Thus the drum of the present invention may not only be manufactured at a reasonable cost, but this drum possesses extremely high strength to resist the forces and shocks to which it is subjected in use.

Thus, while I have illustrated and described preferred embodiments of my invention it is to be understood that these are capable of variation and modification and I therefore do not wish to be limited to the precise details set forth, but desire to avail myself of such changes and alterations as fall within the purview of the following claim.

6 I claim:

' A winding drum and cable winch comprising a cylindrical steel barrel having continuous even end faces extending in planes perpendicular to the axis of the barrel, and end flanges formed of malleable iron having their inner side faces abutting against opposite end faces of the barrel in coaxial relation therewith, each of said flanges having an annular series of spaced arcuate slots concentric with the axes of the barrel and flanges, each of the slots diverging outwardly from the inner face of the flange and being larger at the outer face of the flange, and each flange having an annular series of spaced lugs formed integral therewith concentric with the axis thereof and the axis of the barrel, said lugs projecting laterally from the inner face of the flange and engaging longitudinal face portions of one end of the barrel, and keys formed from welding material welded onto the ends of the barrel and filling the slots in the flanges, whereby torsional displacement of the barrel with respect to the flanges is resisted and the flanges are mechanically interlocked to the barrel by the keys extending into the tapered slots to prevent endwise displacement of the flanges with respect to the barrel, the annular series of lugs of the flanges serving to prevent relative movement of the barrel and the flanges in a direction perpendicular to the axis of the barrel.

MATTHIAS F. SASGEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name 2 Date 1,290,091 Cole Jan. '7, 1919 1,407,202 Kiibler Feb. 21, 1922 1,562,419 Bowen Nov. 17, 1925 2,220,284 Roemer Nov. 5, 1940 OTHER REFERENCES Welding Encyclopedia, 11th Ed. 1943, The Welding Engineer Publishing Co., Chicago, 111., page 484,

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