US1765408A - Crane - Google Patents

Description

June 24, 1930. H. P. ELLIOTT 1,765,408

CRANE Filed Feb. 4, 1924 .Trevenfioz; 9 M

UN E

HARMON r. ELLIOTT, F CAMBRIDGE, Massacrrusnrrs, risers-nor.

CRANE & ENGINEERENG COMPANY, or WICKLIFFE, on o, A

Patented June 24, 193% manta conronarron 0E OHiO CRANE Application filed February 4; 1924. Serial No. 690,415. r

This invention relates to a traveling crane and" hoist and particularly to an overhead crane adapted to be movedmanually on its track beyond the wall of a building to engage and raise loads from a lower level, as "from a truck, and convey them within the building. I I I The particular type of overhead crane with which thisinvention is concerned is adapted to be moved alongits overhead track by an operator who pushes or pulls on the load to move the crane. The crane usually has a self-contained electric motor which operates the hoisting apparatus, and 15 the motor is usually controlled by two pull cords, which cords may depend directly below the crane. When this type of crane is employed to raise loads disposed externally of the building, the crane is moved upon the outwardly-extended portion of the track into a position substantially vertically over the load. ,The crane,'therefore, is usually a considerable distance beyond-thewall of the building. The operative is thereby compelled to lean outwardly beyond the wall in order to engage and operate the motorc'ontrolling cords and also to grasp the load, whereby to move the crane and load into the building. Thereis, consequently, the very grave danger that, the operative may slip and fall out of the building and become injured.

- An object of this invention is the provision of a travelingcrane with means where by the crane may be moved manually in and out of a building andv the power-actuated hoisting apparatus thereof controlled to raise or lower its loadby an operative locatjed entirely within the-building and, thereby, ina safe position. v 1 r In carrying out the invention, I may provide the'crane with'a handle which preferably is pivoted to the .crane and extends rearwardly and, preferably,also downwardly therefrom ;"and said handle may be provided with motor-controlling means at, preferably, its lower end, whereby the crane may be moved to a position external of the building and withdrawn, and its motor controlled, by an operative manipulating the To Tran CLEVELAND M free end of the handle and di in a i 'i the construction and operation of traveling cranes. I Y

Fig. 1 is a sideelevation of the invention lllustrating the manner in which it may be used. a

7 Fig.2 is a detailed side elevation illusof the crane and the handle. v

Fig. 3 is-an end elevation, in detail, of the means to secure the handle to the crane. Fig. 4: is an end elevation of the rear end of the'crane and illustrating more particularly the means to secure the handle in vertical, orv out-of-use, position to the crane.

As here shown, the overhead traveling crane embodying the invention may include the casing 10 which encloses the electric motor and the hoisting or raising and lowering apparatus, from which apparatus the flexible cable 11' may depend for raising and lowering a load. The crane may be suspended movably by wheels 12 from an overhead track 13. Said track may be secured in an elevated position, as to the ceiling of r the building and extended outwardly through a window or door l4; in the wall 15 ofthe building for the purpose of support ing the crane "in position to raise and lower loads from and to some lower position, as, from a truck; which loads are adapted to be passed through the window or door 14; by a suitable movement of the crane along the track.

abutment is adapted to be e gag d by h Preferably, also, the

trating the connectionbetween the rear end The track may be provided'with 7 .an abutment 13? at its outermost end, which crane, thereby to restrict the extent of outward movement thereof.

In accordance with this invention, the crane is provided with means adapted to be located at all times within the building and by which to control the raisingand lowering of the cable 11 and by which the crane may be moved manually along its track. Said means may include the rigid control handle or pole 20, which handle is adapted to be secured to the rear portion 10 of the crane casing and extend rearwardly and, when in use, downwardly therefrom. The lower or free end of said handle is adapted to be grasped by an operative and pushed or pulled upon to move the crane and its load along the track. The length of said handle is adapted-to be such that'the free end thereof is disposed within thebuilding when the craneis at the outermostend of its rack, whereby to render it unnecessary for the operative to lean out of the building. Preferably said handle is pivotally secured removably to the crane. The securing means may include-a sectional connectingmember comprising the complemental semicircularly shaped yokes 21 and 22,; which yolres may be clamped removably aboutthe cylindrically-formed rear end-portion 10 of the crane casing by the bolts 23 and 24. The upper end of said handle may be disposed between the lower endsof said yokes and supported pivotally on the lower bolt 24. Preferably means are provided to support the handle in a convenient position to be grasped by an operative. Said means may include a tension spring 25, the lower end of which may be secured pivotally, or

otherwise, to the handle. The other end of said spring may be secured loosely to one end of an arm 26, which arm-may be pivoted at its other end on the bolt 23, andsupported against pivotal movement in a downward direction by engagement with a suitable stop-member as a casing-flangelO. The arrangement is or may be such that the spring 'will support the handle in a convenient operating position and yet may permit the handle to be depressed or raised if and when desired. When the crane is not in use, said pole may be moved into a more or less elevated and horizontal pos1t1on, as indicated by the dotted lines, Fig. 2, and retained removably in such position by suitable'means as the spring latch 28, which latch may be secured to the crane casing 10. Said latch is adapted to be engaged by a projection, as a pin 29, of he handle,whereby to retain it releasingly in horizontal position; and the latch is adapted to yield and release the pin when the handle is pulled'downwardly with sufiicient force.

The construction and arrangement of spring 25 and arm 26 is or may be such as to permit the handle to be raised to ahorivice including a load carrier and a load zontal position, as indicated by the dotted lines, Fig. 2, and the arm 22 may pivot about said bolt 23 to permit such movement of the r handle.

Said handle preferably is hollow and a flexible electric cable, 32.;is or may be extended through the pole from suitable motor controlling apparatus carried by the crane. Said cable is preferably formed with a flexible loop at its pass between the pole and crane casing whereby to permit the pole to move freely about its'pivotal connection with the casing. 7

Suitable motor-control switches may be contained in a switch-casing 34;, which case 30 ing may be carried'by the pole at the free end thereof and said switches may have exposed circuit- control buttons 35 and 36, one of which may be arranged to bemain tained in a depressed position to raise, ama the other, to lower the load. Whenneithei' switch is depressed, the motor may hold the lead against vertical "movement The ing.

Iclaim; H I I 1. An overhead" trackftype traveling device including a carrier and a hoist and havk inga handle extended rearwardly an'd down- *wardly therefrom, -;means connecting said handle pivotally with said device for'ver- 'tical pivotal movement, and yielding means to restrict the downward movement 'ofsaid handle." j 2. An overhead track type traveling device including a load carrier anda hoist: and having a handle extended rearwardly and downwardly therefrom, means connecting said handle pivotally with said device for vertical pivotal movement, means to restrict the downward movement of saidh'alr' dle, and means to releasably hold said h an-. dle in its upper position.

3. An overhead track type traveling del handling mechanism, an enclosing casing for said mechanism, a sectional connecting mem- "ber '8I1C11Cl1Ilg sald casing, means detachably connecting the sections of said connecting member together, meansfor detachably connecting said connecting member to said casing, and a handle pivoted on oneof said means and extended rearwardly fromthe device. V I 1 4:. An overhead track type. traveling device including a load carrier and a hoist and 1 0 having a handle extended rearwardly and downwardly therefrom, means connecting the forward end of said handle pivotally with said device for vertical pivotal movement, and means rearwardl of the pivot for yieldably suspending sald handle from the device.

5. An overhead track type traveling device including a load carrier and a hoist and having a handle extended-rearwardly and downwardly therefrom, means for connecting said handle pivotally with said device for vertical pivotal movement, and yielding supporting means for said handle, including an arm pivotally connected at one end with said device and a spring connecting I the free end of said arm and said handle.

6. An overhead track type traveling de-- vice including a carrier and a load carrying.

means, a handle extended rearwardly and]v downwardly from said device, means con-- necting said handle pivotally with said device, for vertical pivotal movement, and yielding supporting means for said handle, including an arm pivoted to said device for vertical movement, a stop member arranged to limit the downward pivotal movement of said arm, and a tension spring connecting said handle and said arm.

In testimony whereof, I have signed my name to this specification.

HARMON P. ELLIOTT.

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