US1076333A - Crane or the like. - Google Patents

Description

c. H. TUCKER.

CRANE 0R THB LIKE.

APPLICATION FILED 0OT.14, 1912.

Patented ont. 21, 1913 2 SHEETS-SHEET 1.

lx v l u g v L W! TNESEEE' c? mi C. H. TUCKER.

CRANE 0B. THE LIKE. APPLICATION IILE'D 0012914, 1912.

Patented Oct. 21, 1913.

2 SHEETS-SHEET 2.

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intimen srn'rns FATENT OFFiCE.

@Heeres H- Testina, 01T solera @e10- GRANE; OR THE LIKE;

remesa To all.y whom t may coacem Be. it known that I, CHARLnsy TUCKER, a citizen of theUnitcd States, and a resident of` Toledo, in the coun-ty of Lucas and State of Ohio, have invented a certain new and usefull Crane, ory the like; and l do hereby declare the following to be a ful-l, clear, and exact description oii the. invention, such as will enable others.Y skilled in, theA art tot which i it appert-ains to, make and use the same, reterence being had to the, accompanying drawings, and to` the characters of reference marked thereon, which form, a part of this specification.

My. invention` relates to improvements in hoisting1 or conveyingmeehanisms, and par-v ticularly to means for use in factories employing large drawing presses, forging hams;

any connection torwhich.v it may be adapted or appropriate.

thas been common in plants of the character described toemploy overhead cranes having carriages or trolleys operatingV there-- on. fromn whichy beams havingv work or die lifting hooks or. arms projecting laterally from v'their lowerv endS are. suspendedy for vertical adjustment. InI all of such apparatus, however, sofar asl aware, the work lifting, hook or arm, when not engaged to a work. piece or die, projects laterally from the carrying beam without the clear. space or runway thereof, thus rendering it liable when moved laterallywith the carrying parts tol engage or strikek against pressframes or other obstacles standing in theirpathsA of movement, unless extreme care is observed in the` handling thereof, and net; infrequently causing considerable damage to contactingiobjects or craneparts and injury to workmen.

The object of. my invention is to provide an apparatusof. this class with a work or die carrying hook lor arm, which, when in use, is adapted to stand projected laterally from its carrying memlOI, and whennot in use, or relieved of the weight ofI an article, automatically moves to inoperative position to permit a movement of the carrying mem ber close to presses or other obstacles without striking the same, thus enhancing the practicability and commercial value thereof.

A further object of the invention is the specificati on ofg LettersY Ttatent.v

Patented (1ct-21, 19.13.,

rilassa eetmeter lele-12 ses In. 72.5.589-

provision combination with a suspended trolley beam or. mast, ofy an article carrying arm, which is adapted to project laterally fromthe beam in operative position or tov be turned into` inoperative vertical position, land when in such position to have a part thereof; form a suspended article carrying 4lhook.

The invention is fully described in the following` specification, and while, in its broader aspect, it is capable of embodiment in numerous; forms, a preferred embodiment gthercof is illustrated in the accompanying i drawings, in whiche- Figure l is an elevation of an; overhead crane with the invention associated therei with. and with parts broken. away, the crane being shown injthe act of placing-'a die in a ipress`r which is disposed at one side. Qf the idear Space 0r runway o: the crane mast; and'y Fig. Qis a different sideelevaticn of the i` crane; and; suspended article carrying parts; i Referringtov the drawings, l designates an overhead cranev o r bridge, which operatesori tracks 2:, 2,A and; has a carriage or trolley 3 mounted thereon .for movements trans-v *IH-.Saly 0H Said tracks, aS-,swell understoodinL the, art.r Thetracks 2,2, are mounted on. horizontal beams.` t, which;v are supported by columns 5 atthe respective Sides ot the clear.

space or run-way 6 in which the suspended i article carrying partsof the trolley or carriagex are intended to move. Z designates a drawing-press,steam-hammer or the like, a plurality of which. maybe disposed. ateach s ideof the run'fway or clear space 6.

A iframe-,worky 8,- is suspended from the carriage between the beam members. of the bridge land forms a guide in which a mast i9, is mounted forl vertical reciprocatory nmovements.I The mast 9 has a pair of; Espacedg bracket-arms l0 projecting, laterallyy from thelowerend thereof, and these arms tare connectedc adjacent to. their outer ends` iby a pivot-pin lil to-,the outerendsofwhilch, iwithout` the arms 10, are pivotally attached ithe links l2, 12; The links 1:2 extend upwa-rd. from the pivot-pin l1 and. are coninected1 at their upperends by a short shaftVY passes around one of the sheaves llt of the respective pairs, then upward over a sheave 17 carried at one side ot the frame-work 8, thence downward around the other sheave 14 of the associated pair, and iinally extends upward from such sheave and is iXedly attached to a part of the frame, as shown at 18. The drum 16 is geared in any suitable manner to a motor 19 mounted on the carriage 3, as is well understood in the art.

An article-carrying arm 2O is mounted on the pivot-pin 11 between the bracket- arms 10, 10, and has its inner end weighted to normally tend to maintain the arm in inoperative vertical position, as shown by the dotted lines in Fig. l. The arm 20 has its article-carrying end projected a suitable distance from the pivot-pin to adapt it to project beyond the clear space 6 and int-o position to place a die 2l into a press or power-hammer 7 or to remove the same therefrom when the carriage 3 is adjacent to one side of the bridge l, as shown in Fig. l. rJlhe inner or weighted end of the arm 2O is provided with a hook 20a, which, when the arm is in vertical position, serves as an article-carrying hook, and, when the drum is in' horizontal position, coacts with a pin 22, which is carried by the bracket-arms l0, to limit the lowering movement or the arm, as shown in Fig. l. l/Vhen the arm 20 is in its vertical or inoperative position the outer hooked end thereof is intended to pass between the pairs of sheaves 14 carried by the pin 153 and to have its swinging movements in one direction limited by such pin. It is thus apparent that the pins 13 and 22 coact with the respective ends of the arm 20110 j' qevent the arm from making more than a quarter turn on the pivot-pin 11.

lt is evident in the use of a crane provided with my improved article-carrying arm that such arm, when a weight or article is applied to the outer projected endthereot, stands in horizontal position, as indicated by thev full lines in Fig. 1, and may then be projected beyond the clear space 6 to place a die into a press, o-r for any purpose, and that when suc-h arm is relieved or' the load which it was carrying it automatically assumes the inoperative vertical position indicated by dotted lines in F ig. l, so that the crane can be run lengthwise ci' the clear space 6 close to the columns 5, or other objects disposed adjacent to the sides of such space, without danger of the arm striking such objects and injuring the same, as frequently occurs with the cranes employing` a normally horizontally proj ect-ing article-carrying arm.

lt is also evident that when the arm 2O is in its vertical position the lower hooked end thereof may then serve as an article carrying means. lt will therefore be seen that either end of the arm 20 can be used as an article carrying means when the other end of such arm is in its inoperative position.

l wish it understood that my invention is not limited to any specific construction or arrangement of the parts except in so tar as such limitations are speciiied in the claims.

Having thus described my invention, what l claim as new, and desire to secure by Letters Patent, is,

l. ln combination, an overhead trolley, a mast depending therefrom, an article carrying member pivoted to the lower end portion of said mast for vertical swinging movements, said member having a long arm with a hook at its outer end and a short arm which is formed with a hook at its outer end and is of greater weight than the long arm to normally maintain the latter in inoperative Auprightposition with the hook of the short arm in article carrying position, and a stop for limiting the downward swinging movements of the long arm fromupright position.

2. ln an overhead crane, a suspended part having bracket members projecting laterally therefrom, a pivot-pin mounted in and connecting` said members, links pivotally rising from opposite ends of said pivotpin, a shaftmo-unted in and connecting the upper ends of said links, sheaves carried by said shaft, means coacting with said sheaves to control the raising and lowering movements of said part, an article carrying arm mounted on said pivot-pin for vertical swinging movements and normally influenced to stand in vertical position, and when in such position to have its upper end proj ecting between and against different ones of the sheaves, and adapted to act against said shaft, means carried by the said bracket nembels for coacting with a part of said arm to limit the downward swinging 1novements thereof in one direction, said arm when in horizontal position being adapted to project beyond the clear space or run-way `of said crane part.

In testimony whereof, l have hereunto signed my name to' this specification in the presence of two subscribing witnesses.

CHARLES H. TUCKER.

iVitnesses C. W. OWEN, C. H. BILLS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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