US1577606A - Crane - Google Patents

Description

March 23 153266 E. T. BENNINGTON CRANE Filed March 4,

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CRANE.

Application filed March 14, 1923. Serial No. 624,939.

To all whom it may conccm:

Be it known that L Eimr, T. BENNINGTON, ll, citizen of the United States, residing at Willough oy, in the county of Liike'and State of Ohio, have invented a certain new mid useful Improven'icnc in Cranes, of whiclilhe following is a. full, clear, and exact description.

This invention relalcs to cranes of the hand propellecl electric hoist type, and has for its chief object to improve the control of (cones of this type so as to make it possible for an OPGi'fiilOFWltii one hand to move the crane along the rumvaycnd to move the trolley along the crime and to coniziol the hoist without making i'c necessary for him to shift his hand from one point to another, and leaving his other hand free for other 'WQKk.

In carrying out my invention it rigid pipe is extended downward from live trolley for enough '50 that if. can he. conveniently reached by the operator while standing on the floor, this pipe being; connected to lho trolley in a manner such limit the opcinlo can, by pushing or pulling on it cilhcimove the trolley sil'ong zinc crane, or the crane along its i'unwnyq The trolley is provided with on electric hoist which is x'ei'noi'c. controlled, and for the control of the hoist switching moons preferably in the form of a pair of push button switchos orc p fevidcii near the bottom of the pipe which forms :1v conduit for the switch wiring, so limb the operator can with his liimnh operate either of the lioisi; controlling swilchcs while his hand grips the pipe to shift the (111110 ortrollcy, or both.

The invention mcy he further briefly summarized as consisting in certain novel (letaiis of construction, :mii coml'iinetions'mid arrangements f ports which will he (lesci'ibeil in the specification and set, forth in the appended claims.

In the accompanying sheets of cirawings wherein I have shown the pi'c'icl'recl GlflliOl'liment of the invention, Fig. 1 is a perspective View showing a portion of a crane and one 01" the runway rails for the crane, said crane being equipped with my iin'e nfiio'n; Fig. 2 is ii side View of, the ti'oilcrynmd of a portion of the body of the crane?- Filz. 3 is an enlarged View of the lower end of the crane controlling mcmher showing the push .and the remote conlrolled and push button switches.

The crane herein iilustmted is in itself of the well-lmown hype hich hoe a "body or cross-portion 1D in the'zform of an I-lzcem to the emis of which are connected end trucks 11 hevinwheels 12 'whicli travel along the pamlle mile 13 cities crane run way. I have herein illustratedeim i one of the rails 13 one one of the whee e end trucks 1'1, but it will be undershoofi that the construclion at leech ends is the same except that the truck cc one end of the crime has ihPfilil of cuercn'l'. collectors.

Travelling over iiie lower ficngeof the ii-beam 10 is a trolley 14 which is pmvideci with an electric hoist. The details of the hoislv me immelc'rial to my invention, but I have indicateil the motor at 15, the cable drum at 16 on which the-hoist; or load cable 1? is adaplecl to be wouncl and from which it is designed to be unwound to raise and lower the loacl respectively.

The motor receives currentfrom a peinof trolley wires 18 whic'hcre engaged by trolicy Wheels 19 carried by the trolley, these trolley wires 18 extending across the crane above and parallel to'lihe I-hemn 10. 'lhey receive current from a; pair of main trolley wires 20 which are above one oi the runway i rails 13 and are ei'igaged by trolleys 3,1 cm. rie/d by one of the end trucks 11 of the crane.

A crane of this typcis pulled or pushed hy hand along the runway, and the trolley is in [is similar manner moved along the crane. In accordance with my invention the moons for moving the crane or ifihe troi icy, or botn encl the means for controlling: the hoist is. embodied more or loss in one element, Moi with this in view Icx'l'omi down from the-trolley a. pipe 22 which has sufficient lenglh that the lower part can he conveniently reached by the ope-mics: on The floor below. The upper 1 art of thepipe is in any suitable way rigid y connected to the trolley so that it extends down as o rigid arm or handle which ill enable the cyclic lo he pushed along the crane and the to be pushed :ilon; its runway.

' However Ilind that: this overcome v can be mo There are various Ways in which the upper end ofthis'v pipe can be rigidly connected to the trolley for the purpose described, but in this instance its upper end is attached to an exten sion 23 of a'load bar 2; of the trolley, and" a shortdistance beneath the loud bar this pipe is connected to the trolley by a bracing member 23'. In this manner .sutiicient I'JQI- idity is provided between the trolley and pipe for thewpurpose o Entering the trolley und thecrane. l-l'eretolore it; lias been necessu rylin :L crane ot this type to posit-ion the loa'dfor trolley at the centcinot' thecrime before the, crane couldehe moved alone the riinwaysince bvpushing against; theload with the trolley near one end, that particle iar end would more but the other end would remainstationary, r nsing t1 bindingactio-n; objectioncnn be oilectivelv, i. e that the crane ,dalong the runway by pushing or pulling on thepipe even though the-trol= ley' near one: endh flexibly suspendingthe runtvti'y endbyprovidi-ng; on the end trucks supporting. 'ivheels which swivel so that the tlangcs ot'the {vheels are prevented from diggingint -the ruilsnndthus caus ing a binding action. i

In accordance :Witlrniy invention the hoist motor isremote-controlledthrough the medium of solenoid operated switches; the dc" tails of which are immaterial to-iny inven tion and which are preferably,enclosed in a box 24 attached to one side of the-hoist." In

Fig. ll have shown conventionally or diagrz'immatically oneiway in which this can be accomplished. In this figure l'utiliZe tour remote controllea'l switches 25, 26, 27 and 28 which are closed by solenoids 29 adapted to be connected to the current supplying or line conductors 30 by switching meansconsisting preferably of push button switches 31" which in 'ZLCCOl'CltIIlCGWltll my invention are arranged in 0. housing 32 near the lower end of the pipe 22 as shown in Figs. 1 and 3. The Wires, in this instance three in number, are extended up from the push button switches 31 through the pipe to a. point near the. upper endot the lzttter where' they are extended imvai-dly to the box2 l" containing the remote controlled switches.

Each oi these push bhtton, switches con trols two ot the switches; one controllirig the switches and, 271. and the other the switches 26- and When one of the Push button switches closed sons to close'tivo ofthe remote controlled switches, current passes from the line conductors through the armature 1.'iand field with ,the current passing through the'armatiruein one direction, and when the switches ofthe other set are closed by manipulating the other push button switch, the current again passes through the field and armature of the motor but through.thearmature in the reverse directionl ,ln;otlierlwords, ovhenone push buttonsrvfitch is operated, the hoist cable is Wound insoas to 1'tLlSQ,l1QlQfltlOl lOflti hook; and ivhenfth'e other. push button s-i'vitch is closed. the" cable is unwoiind so as to-losver the .lo ad or the load hook.

"In practice, an interlockis provided bet\V QOI1,.tl1E3 lTWO sets of remote controlled switches so that it is impossible to close all the switches at the same time, but as before stated, the dctails'of the switches are inii'na aterial ,to the invention; and the 'sain is hence I I i lnmov'ing the trolleywoi the crane ltSt-ilfliii theoperator puts his handon thelow'er endof the pipe 22, and when he wishes to raise true of the-interlock re terred to, and it is not-shown.

or lowerfltheiload he can do this by closin either push button switch-With 'hislt'l'litni' and ithouttakinghis'hand tio1n tli'e"piiie.' He can thus move the crane or "trolley'tmd takecare ofthehoist with one lmndwvithout'i' f movingit froln' one point. to' a nk'ither, and

leaving the-other hand free; In 'fachflwith this one hand the several operations of'nifov-f ing th'e trolley and the crane,or bothf, and

of eontrollingthe hoist'can be 'pe'rforinedf either simultaneously o1- successively. I While I haveshownftlie preferred form of my invention, I do not desire to be c' onj-t fined to the exactdetuils sliownibufiaim in my claims tocov'c'r all modifications which do not involve a departure from the "spirit. and scopeof niy invention as definetlin the iippended claims. l v

.l'laving described my invention, I'claint: :1. In com'binat'ion 'Withn crime adapted to be n'ioved' along a. ru'ntvay, aftirdlley adapted to tieoved along the cra'iie, -an electric hoist in said trolley iin dl a rigid member"extending down vtro'm' the trolleyi and carrying hoist controlling switches.

2 In combinationwitha {crane adapted to be moved along 511 runwtzy, strolley adapted.

lie

to he movedalongjthe crime and provided with an electric hoist, and a hollow cra'ne and trolleymoving member extending down from the tr'olley and proilidd n it e lowei-"end witli'hoist controlling. switches, .v stud hollow niember'formingaconduitfo1n the wires 'entehding li oni the switches 3. In combination with a (irane da pted v V I runway, a trolley sd:1pted to' be moved along'itho, crane and,

to be moved along provided vitli an; electric hoist remote con-R trolled sivitc hes lor: operating the hoist, and a rigid member .xtehdingfdoxh frointhe trolley and: 'providedpneanitsdowen end 1 with hoist controlled switches. connected to said remotecontrolledswitches.; 2-1

4. In combination with a crane adapted to v be moved along azrunwayya trolley adapted to be moved along the crane and provided with an electric holst'having remote conmenace trolled switches, a rigid pipe connected to the trolley and extending downward there from, and a; pair of hoist controlling switches near the lower end of said pipe, said pipe constituting a conduit for wiring connecting the last mentioned switches to the remote controlled switches.

5. Incombination with a crane runway a crane movable by hand along the runway a trolley adapted to be moved by hand along the crane and having a motor operatcd'hoist and a rigid member rQ ectmg down from the trolley and serving when force is applied thereto to move the trolley along the crane or to move the crane along its runway or both, said member embody mg means for controlling the hoist motor.

t. In combination with axload carrier adapted to be moved along an overhead track, a hoist on said carrier by which the load may be raised or lowered, a handle depending from the carrier by which said carrier may be pushed along the track, and means for operating the hoist, said hoist operating means including a controlling;

element, connected with the handle.

7. The combination with a load carrier adapted to be moved along an overhead traclcway and having; a hoist' by which the load may be raised or lowered, of a member depending from the carrier, said member having a connection with the carrier such that the carrier may be moved along the trachway when force is applied to said member, said member also having means by which the operation of the hoist may be controlled to raise or lower the load.

In testimony whereof, I hereunto affix my signature.

EARL T; BENN] NGTON.

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