US1564655A - Lumber-loading device - Google Patents

Description

Dec. 8 1925. 1,564,655

' B. W. WESTBO LUMBER LOADING DEVICE Filed June 23, 1924 2 Shets-Shet 1 INVENTOR BE/FNH/JRD [Mu/5750 Dec. 8, 2 1.564.655

- B. w. WESTBO LUMBER LOADING DEVI CE I Filed June 23 1924 2 Sheets-Sheet 2 2/ fag. 5 30 INVENTOR flERNH/YRD M! 01/557150 Jggx $250 04, ATTORNEY t atcntedlllec. 8, W25.

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Applicatioh and June as, 1924. Serial no. veneer.

To all whom it concern:

Be it known that l, BnRNHAnn W, Wnsr- B0, a citizen of the United States, and a resident of South Prairie, Pierce County,

a Washington, have invented certain new and useful improvements in Lumber-Loading Devices, ef-which the following is a specification. i

This invention relates to improvements to in lumber loading devices, and particularly to a device of that character especially adapted for the handling of lumber and for loading it 'intoand from ships; the principal object of the invention being to 1 provide such a device inthe form of. a

grapple, adapted to be attached to and lifted by a hoisting. cable and which has means provided for embracing and lifting large stacks of lumber.

Another object offlthe invention is to 'provide a device as above stated havingv manualy operable means for easily and quickly adjusting the lifting members so as to free the device from a stack of lumber or for $5 securing it to the stack.

A still further object resides in the provision of clam ing levers for retaining a load against slippagewhile being carried.

@ther objects reside in the details of con- W struction and combination of parts embodied in the inventionand in' their mode oi operation.

- in accomplishing these and other objectsof the invention, .have'providedthe improved details of construction, the preilerred forms of which are illustrated in the accompanying drawirn'gs, wherein 1 Figure 1 is a perspective view illustrating the application. of a device embodying the present invention to a" stack of lumber.

Figure 2 is an enlarged side view of the device.

Figure 3 is an end view of the same. Figure 4 is a plan'view-of thecarrier with the lilting arms turned to the position they assume while carrying a load and showing in dotted lines the position to which they are adjusted to free the device M from the load. Figure 5 is a side elevation of a device of a modified construction.

'Figure 6 is a plan view of the same. llteferring more in detail to the draw- M in% s- M he carrier comprises a horizontally diaposed main frame structure comprising two tion.

parallel, spaced apartbeams 1 and 2, joined rigidly by a transverse beam 3 that con-- nects at its ends with the central portions of the end beams. "lhisframe can be madein smtahle widths and'lengths and prefer-\ ably would be cast in one piece of such strength that a load of considerable weight could be lifted thereby.

1 At the opposite ends oi the end beams 1 and 2, or at what may he termed the four corners of the frame, bearings are provided I wherein the upper ends of four vertical,

posts, or shafts 4, are rotatably held. lhe se are of equal length and attheirvlower ends 1 have laterally directed arms 5 fixed rigid-- ly thereto and which may be moved to diilerent positions by rotation of thejshafts to which they are fixed.

Fixed onthe upper ends of the four shaits 4 are crank arms 6 and mounted pivotally on the framefby pins'Z, at opposite ends of the cross beam 3, are bell cranks comprising oppositely extending arms 8 and actuating levers The crank arms 8 of each lever are connected bylinlis 10 with the cranks 6 at that side of the frame to provide connections through which, by movement of the bell crank, both shafts maybe simultaneously "rotated to swing the arms 5 into or from load carrying position beneath the frame.

Formed centrally on the cross beam 3 are three spaced apart lugs 12 and .pivotally mounted between these on a bolt or pin 13 extended through them'are two clamping levers ll that extend toward opposite ends of the frame as shown in Figure l. The

upper ends of these levers extend somewhat past their pivot point and are connected by means otlinlrs 15 with a ring 10 to which a hoisting cable 1? may be attached, At their lower ends the levers have cross bars .18 fixed thereto adapted to engage with the load when lilting is done to hold. it level and against slippage in either direcln preparing lumber to be handled with the present device it is stacked as shhwn when the device isjlowered over it. Then,

after the carrier has been lowered andpositione'd properly between the ends of the stack, the shafts are rotated, by the actua- 6 tion of the bell cranks, to swing thefcarrier arms inwardly -froin opposite sides to a position as shown in Figures 3 and i, to serve as a support for-the stack when it is lifted, I

When the device is lifted by upward pull -on the cable 17, the cross bars 18 on the lower ends of levers 14 are swung downwardly and clamped tightly against the lumber stack and thereby hold it in balanced 15 position and prevent slippage of the load.

- lVhen the load is lowered onto a support and the cable slackened, the holding pressure of the levers 1. is removed and the i arms 5 may be swung outwardly to free i the device so that it may be lifted from the stack.

In Figures 5 and 6, I have illustrated a modification of the device wherein the clamping levers 14 are pivotally fixed between lugs 25 extended from. the under side of the cross beam 3 and wherein the crank arms d of. the four posts 4 are connected by means of links 10 with the opposite ends of cross bars 27 fixed to the ends of a shaft W 28 supported parallel with and above the beam 3- in bearings 29-29, The cross bars 27 have extended ends 30 equipped with handles 31 whereby the shaft may be re 35 ing arm 5, as before described.

It is readily apparent that changes could be made in various details of construction without departing from the spirit oi the in vention and for this reason I do not wish. to be limited only to the details herein illustrated Having thus described my invention, what I claim as new therein and desire to secure by Letters-Patent, is:

1. A. device of the class described. comprising a horizontal frame structure, a plurality of shafts fixed rotatably at their upper ends in said frame and extending downwardly at opposite sides thereof, load carrying arms Xedperpendicularly to the lower ends of the shafts, means at each side of the frame, operable to simultaneously rotate the shafts to swing their arms into .Or from load carrying osition, a pair of clamping levers pivotal y attached to the frame having ends adapted to engage a load being lifted and means for connecting their opposite end with a hoisting cable.

tated to effect the adjustment of the lift.

incense '2. In a device of the class described, a

horizontal frame structure having parallel, $9 opposite side beams and a transverse beam rigidly eonnectin them at their centers, shafts rotatably Xed at their upper ends in the ends of said side beams and extended downwardly therefrom, arms fixed perpendicularly to the lower ends of the shafts,

crank arms fixed to the upper ends of the shafts, bell cranks fixed pivotally to the frame at opposite sides and links connecting the bell cranks with the said crank arms whereby actuation of the bell cranks at either side of the frame causes rotation of the shafts at that side to swing the arms into or from load carrying position and means for attaching'a hoisting cable centrally to the frame.

3. In device of the class described, a horizontal frame structure having parallel, opposite side beams and a transverse beam rigidly connecting them, at their centers, shafts rotatahly fixed at their upper ends in the ends of said side beams and extended downwardly therefrom, arms fined perpendicularly to the lower ends of the shafts, crank arms fixed to the upper ends of'the shafts, bell cranks fixed .pivotally to the frame at opposite sides and links connecting the bell cranks with the said crank arms whereby actuation of the bell cranks, at either side of the frame, causes rotation of t the shafts at that side to swing the arms into or from load carrying position, a pair of levers pivotally fixed centrally to the cross beam of the frame to extend in opposite directions parallel with the side beams, said levers having cross bars at their outer ends for engaging a load carried by the device and. having connecting at their opposite ends tor attachment to a hoisting cable.

4., A. device of the class described comprising a horizontal frame'structure, a pin rality of shafts fixed at their upper ends in said frame and. extending downwardly therefrom, load carrying arms fixed to the lower ends of the shafts and clamping levers pivotally mounted in the frame having ends adapted for connection with a hoisting means and their opposite ends adapted to be clamped against the top of theiloadin opposed relation to the said supporting arms when tension is applied to the oisting means;

Signed at Tacoma, Pierce County, Washington, this 25th day of April 1924s BERNHARD W WESTBQ.

Nil

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