US2346956A - Hoisting and conveying apparatus - Google Patents

Description

c. N. WOLD 2,346,956 HOISTING AND CONVEYING APPARAT US 3 Sheets-Sheet 2 Filed July 5. '1943 April 18, 1944.

April 18, 1944. c. N. WOLD HOISTING AND CONVEYING APPARATUS Filed July 5, 1943 v 3 Sheets-Sheet 5 CZar'ewee A/ wazd By 5mm W a tofneys Patented Apr. 18, 1944 UNITED STATES PATENT OFFICE HOISTING AND CONVEYING APPARATUS Clarence N. Wold, Roseau, Minn.

Application July 5, 1943, Serial No. 493,584

1 Claim.

My invention relates to improvements in hoisting and conveying apparatus for use more particularly, although not necessarily, in barns for loading hay into lofts in the barns.

The primary object of my invention is to provide apparatus for the purpose above set forth which may be easily and quickly installed in the upper portion of a barn adjacent the roof to hoist hay from the ground or from wagons outside the barn and convey the hay into the barn for placement as desired, and which economizes in the use of cable and pulleys, involves parts of simple construction, is safe, and comparatively inexpensive to manufacture and install.

Other and subordinate objects are also comprehended by my invention, all of which, together with the precise nature of my improvements will be readily understood when the succeeding description and claims are read with reference to th drawings accompanying and forming part of this specification.

In said drawings:

Figure 1 is a view in elevation illustrating my invention in its preferred embodiment installed in a barn,

Figure 2 is a view in vertical section taken on the line 22 of Figure 1,

Figure 3 is a view in front elevation of the cable winding reel, the drive therefor, and the supporting frame for said reel and drive,

Figure 4 is a View in bottom plan of said reel, .drive, and frame, and

Figure 5 is a detailed view in longitudinal section illustrating an optional use of the invention.

Referring to the drawings by numerals, my improved hoisting and conveying apparatus has been shown therein, by way of exemplification only, as installed in a type of barn I provided with a gable-type roof 2, lower and upper lofts 3, 4, respectively, an upper, central hay-loading doorway 5 in the front wall 6 of the barn adapted to be closed by a door I hinged, as at 8, to open outwardly and downwardly, and a lower entrance doorway 9 adapted to be closed by swinging doors III.

A basic element of my improved hoisting and conveying apparatus is a rod-like, overhead track II in the upper portion of the barn I, in the peak of the roof 2, close to said peak and which extends in the longitudinal center of the barn horizontally from the rear end wall out of the doorway 5 for a suitable distance and terminates outside said doorway 5 in an upturned front end loop I3 forming a vertical front-stop III' for a purpose presently seen, The terminal "of the loop I3 and the other end of the track I I are fixed to the barn structure in any suitable manner, not shown.

A trolley-type carriage I5 of skeleton form straddles the track I I and is suspended from said track by means of a pair of front and rear grooved wheels I6 running on said track and suitably mounted in the carriage. The carriage I5 is provided, below the track I I, with a pair of front and rear pulleys I'I, I8, respectively.

In the rear upper portion of the barn I is a cable-winding reel I9 horizontally disposed, and a power drive, presently described, for said reel, both supported by a rectangular frame 20 including upright side bars 2I and an intermediate upright bar 22, said frame being suitably fixed to the rear wall I2 of the barn I in elevated position such that the reel I9 is supported directly below the track II. p

A hoisting cable 23 is suitably fixed at one end to the reel I9 and extends forwardly over the pulley I8 of the carriage I5 and from said pulley around the usual sheave 24 of a sheave block 25, said cable being trained from the sheave block 25 upwardly and rearwardly over the front pulley ll of the carriage I5 and having its upper end connected, as at 26, to said sheave block in the usual manner. The sheave block 24 carries the usual grappling hook 21. An upright safety guide frame I9a for the cable 23 is mounted on one of the side bars 2|, and the bar 22 of the frame 20, in front of the reel I9, and by means of brackets I9b, the frame I9a including upright guide rollers I90.

The power drive comprises a motor 28, the armature shaft 29 of which is connected by a belt and pulley drive 30 to a driven shaft 3| jourfialed in bearings 32 fixed on one side bar 2I of the frame 20 and on the intermediate bar 22 respectively. A clutch gear 33, having a grooved collar 34, is splined on the driven shaft 3|, as at 35, for shifting into and out of mesh with a relatively larger gear 36 fast on oneend trunnion '39 of the reel I9, said reel having a pair of such end trunnions by means of which, and bearings 38,

said reel is mounted on one side bar 2I and the intermediate bar 22 of the frame 20.

A gear shifting lever 39 provided with a forked .end 40 straddling the grooved collar 34 ispivoted intermediate its ends, as at 35, on a fixed bar GI of the frame 20 for swinging in one direction to mesh the gear 33 with the gear 36. A coil spring 42 suitably connected to the lever 39 and to the intermediate bar 22 urges the lever 39 in the other direction whereby the gear 33 is normally held out of mesh relative to the gear 36.

A pull cable 43 is provided for swinging the gear shifting lever 39 in the proper direction to cause the gear 33 to mesh with the gear 36. The cable 43 is connected at one end thereof, as at 44, to the lever 39, then trained around a guide pulley 45 on the frame 20, extended forwardly to the front of the barn l, and then downwardly inside the barnlaroundaseriesof upper, lower and intermediate pulleys 4'8, "and 47a,'wlth its other end connected, as at 48, to an upright cable operating hand lever 49 arranged at the ground or floor level adjacent to the doorway ID for convenient reach through said doorway. Thecable operating lever 49 is pivoted, as at 5.0,..for movement into set positions establishedbythe usual toothed segment 5| and hand grip pperated ;detent 52 on said lever. Where the cable 43 runs over the pulley 46, a length of chain 53may-"be interposed in-said cable to better resist -wear.

As will be seemthe hand lever 49 and pull cable 43 provide means for operatively connecting the motor drive to'the reel i9 for winding up the hoisting cable 23, and fordisengaging-said 'drive so that-the reel I!) may idle and unwind said cable v23.

Adjacent the doorway i is a switch box .54 suitably mounted on:the.front wall Sand which may be of any conventional typefor'plug-in connection-thereto of power lines, not shown, from a remote source of electrical supply, not shown. The switch designated 55 is connected on one side toone side of the motor 28-by-a line 56. The other sideof the switch "55is connected-by a line 51 to one-sideof a motor cut-out switch 58 of the spring loaded plunger -:type and connected on its other side by a short line 59, to the other side of said motor. The plunger 60 of the cut-out switch 58 is arranged in the path of rearward movement of the carriage I; and said switch 58 is designed to be set at difierentlocations along the track ,I I so that said carriage may. disable the motor 28 as it travels rearwardly to different locations in the barn I, whereby hay, or the like,

suspended from the sheave'block 24 maybeunloaded in thelofts, for instance, as occasion may require. For setting the motor cut-out switch 58 in different locations, a suitable clamp, such as represented at 6|, may be provided on said switch for engagement with thetrack II. The lever 55a of the switch 55 is connected to the pull cable 43 bya coil spring 55b and to the front wall 5 by another coil spring 550, the-arrangement being. such that under pull on said cable 43 ,to operatively connect the motor drive to the reel J9, the switch. 55 will be pulled closed, and when the cable 43 is slackened to, permitthe spring 42 and lever .39 .todisengage the clutch gear33, the switch lever 55a will bepulled open by ,the spring 550.

As will be seen, the hoistingcable 23 andsheave block 24,- together with the-carriage l5, constitute ablock and tackle which, when the reel 19 1s disengaged from the-motor drive, may be pulled out-of the barn I through the doorway 5, as by a line, not shown, suitably attached to the carriage l5, after'whichthe sheave block 24 maybe lowered so that the-hook 21 maybe attached, as representedby Idottedlines inFigure 2, to ;a bale of hay 62,;or the like. The motor drive may then be connected to the reel 19 by operation of :the handlever 49, and the=motor energized simultaneously,.in the manner described, to causereel 19 to. reel upthe. hoisting cable. 23 and; hoist the load to the carriage IS, the carriage being held in the loop l3 by said line during this hoisting operation. As the load is elevated to the carriage l5, said carriage may be released, in a manner which will be clear, whereupon the carriage and load will be pulled into the barn through the doorway 5 until the carriage strikes the plunger 60 and thereby cuts out the motor 28. The motor drive may then be disconnected, or disabled, to permit the load to descend, under the influence of gravity, for deposit whererequired.

As will also be apparent, the motor 28 may be deenergized by operation of the switch before the carriage I5 engages the plunger of the motor cut-out switch 58 if it is desired to halt saidcarriage before it engages said plunger 60.

To hold the reel stationary when the carriage i5 is thus haltedand also whenever desired, a brake mechanism is provided for the reel 19 comprising'a'brake drum 63 fast on the gear 36, and a brake band 64 having one end fast on a bracket 65 suitably secured tothe ,frame 20 and its other end suitably connected to a pull cable 66 for tightening of the band around said drum by pull ,exertedon said cable. The pull cable :65 .is extended upwardly from said band 84 over a-pair of pulleys -61, 68 suitably mounted "above the drum -63, then downwardly and forwardly around another suitably mounted pulley fisandforward- 1y .from pulley 69 to a pulley 10 mounted on a bracket H on the front wall'5. From the pulley 10 said pull cable 66 is extended downwardly and around a-suitable pulley :1l to the hand'lever 49 the arrangement being such that when said lever 49'is operated'in the proper direction and degree to'permit the clutch-gear 33 to be .disengagedby the spring 42, and theswitch 55 to .be opened by the spring 550, further operation'of said lever in-the same-direction -will exert pull onthepull cable 66 to brake thereel l9 and hold the same stationary. Obviously, by easing up on the lever 5| the reel 19 may ibepermitted to idle when such operation is desired.

After loading of the loftis accomplished, or at any other time, the sheave block grappling hook 21 may becoupled to an eye-bolt 'l2on the door 1 and the apparatus used to pull ,said'. door shut, as indicatedin Figure 5.

The stop i 4 limits forward travel of the carriage l5 outtof the barn I, the advantage of which will be obvious. A notch 13;,1's provided in the door 1 to straddle the loopzhi .whenxsaid door is closed.

The foregoing will,-it is believed, suffice to'impart a clear understanding of my invention without further explanation.

Manifestly the invention, asdescribed, is susceptibleiof modification without departing from the inventive concept and right-is herein-reserved to such modificationsasfall within the scope of the appended claim.

In aibarn having end walls, and an upper doorway in one end wall, an overhead track extending from the other end wall horizontally out of the top of-said doorway and terminating outside said doorway in an upturned .loop, a carriage mounted on said .trackto travel from said loop through-said doorway into saidpba'rn and provided with pulleys thereon, a reel mountedon saidrother end wall -,in elevated position, a block and tackle forelevating a load .to esaidlcarriage when the latter is in ,said loopcomprising a cable rhaving oneendtfixedlto said reel-forwindingof'gthe cable onssaid reel land unwinding therefrom-underprieration of the reel in opposite directions, respectively, said cable being trained over said pulleys to form a block elevating and lowering loop when said cable is unwound, a motor drive for operative connection to said reel to operate the same in a cable winding direction and including a clutch adapted to be disengaged to permit the reel to idle in "a cable unwinding direction, said drive being mounted in elevated position on said other end wall, a remote manual control for said drive, and a carriage operated control for said motor comprising a motor cut-out switch on said track operative by travel of the carriage into said barn, and settable along said track into different positions.

CLARENCE N. WOLD.

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