US2652164A - Lumber hoist truck - Google Patents

Description

Sept. 15, 1953 .L B. TIPPS LUMBER HOIST TRUCK INVENTOR ATTORNEYS Sept. 15, 1953 J. B. TIPPS 2,652,164

LUMBER HOIST TRUCK Filed ocx. le, 195o 4 sheets-sheet 2 u w. l1 FU Z9 j 'L1-ff /9 ,9 35 `55 n\1\/E1\1TOR` Z4 fcze-. Tip/US .5 @F BY i I v ATTORNEYS Sept. 15, 1953 J. B. TIPPS LUMBER HoIsT TRUCK 4 Sheets-Sheet 3 Filed Oct. 16. 1950 INVITOR lv/215 ATTORNEYS Sept. l5, 1953 J. B. lTIPPS 2,652,164

LUMBER HOIST TRUCK Fil'ed oet. 1e, 195o 4 sheets-sheet 4 ATTORNEY Patented Sept. 15, 1953 LUMBER HOISTLTIRUCK ilakef-Tipps, Laurel, Miss.

Application October 16, 1950,:SeriallNoLi1'90Q330 llGlaim. l1 .This invention .relates to a materiallran'dling "device .An object ofpthis invention is ltor-provide a vde- `'vicewhich is capable of handling lumber `or the like for stacking or removinglumber' in relatively large quantities.

YAnother object of this :invention is to ,provide 'a lumber "or material handling device which can be'mounted on a truck frame so that the'lumber 'canne stackedior removedandshi'fted about.

Afnrther *object of this "invention is toprovide 4a device of this lkind .which includes means for tilting the material Vwhen Athe latter 'is lbein'g shifted'so as toprevent the material 'from slipping oi of 'the carriage or elevator.

A "urther objectoithis ,invention is tojprovide a material handling device of 'this .kind which canbe 4mounted on a conventional truck having a power takeoff.

`With the above and other objects `inviewgrny invention consists in the arrangement, combination and details Yoi `construction NdisclosedA in the drawings ,and.'specication, and then lrnorevjparticularly pointed 'out in the appended claim.

In .the drawings: Y Figure -l vis a detailed side elevation partly broken away Aof Yamaterial handling 'device icon- 4structed according to .an embodiment -oithis invention.

Figure'2 is a rear elevationApartly'insecti'on of the device.

vFigure 3 is a `vertical 'section taken 'substantiallyonthe line 3 3 ofFigure 12.

'Figure 4..is a sectional view taken on 'the'lin'e l5-'fl of Figure'.

v.liigure 5 visa fragmentary longitudinal section of the tilt adjusting means.

Figure .Gais asectional view :taken on :the Eline 6-6 of Figure 5.

Figure '7 is a cross sectional view taken on line l-'l "of Figure 3.

YFigure 8 'isa detail side elevation or" the vllframe 'bers 9 connected' togetherbyconnecting channel members "20.

The channel .members 'I9 'are disposed with their vchannelsin .confronting relationan'd constituteiguide channls'ora carriage orelevator generally designated as 2L The elevator '2l `is `formed of aA pair ofoutertubular framemembers 221which are connected together '.by connecting "channel members AThe tubularmembers "22 have pix/totally securedto fthe `outer sides -thereof a plurality of 'vertically'spaced apart rollers '24 which engage withinthe vchannels i9.

Theelevator or carriage'Zl `also includesapair of rearwardlyjprojeeting bars`2`5 which' constitute liit'bars and are disposed at right Aangles .to the 'carriage '2L The'bars orffingers "E5 taper rearwardly with `the smaller ends Athereof outermost and are adap'te'dlto'be extended'beneath material which'isto belifted or stacked. '.Thefguide 'frame i3 also 'includes a transversely extending nl" beam S25 secured to the forward .side oi the frame l'S adjacent 4the Ilower end .portion thereof.

Thelbearn has .secured'theretoiears2l v which are nivo'tally mounted on nivot members V28 car- .ried byjirame l5. An intermediate fIloea-m "29 is vsecured vto the 'forwar'd sideof vthe iframe l5 .a point below the .upper .end thereof and a .sheave orpulley'tisrotatabIy .carried by rearwardly projecting earsl3`l lxed to vthel'bearn 29. An upperlbeam 32 'is xed across .the upperend of .the yframe T8, and an runnersheavef33 is rotatably disposed between.a.pai.r of-earsll which are fixed .to the 'beam 32.

.A carriageroperating cable 35 engages with the .sheaves or .pulleys 3l) `and-33 and extends downwardly from the upper pulley 33 and engages about .a zpulleylor f'sheave t36 which is rotatably carried by the `upper .connecting member 23 of the carriage 2.2. The-cable :35.is extended from the lower sheave Ait 'to vthe lupper -beam 32 Aand ,is lined to an eye 31'! 1Vcarried fby the beam member The cable 65 =is extended downwardly Sand .forwardly from :the sheave `3) Vandis wound about ia winding drum @il .whichzis carried 'by the frame l5 :forwardly-of fthe fframe 2| l. The windingdrum 3S jiscennected'with afr'eduction.gearing/or transmlission Zilhaving asshaftiiiextending therefrom fon vwhich a tsprocket 5M :is rsecured. A chain l2 :engages Aabout the #sprocket M and also :engages .fabnut Y'the v'sprocket '43 which is 'loosely mounted on a shaft M. The shaft M is journalled in depending bearings 45 and is connected at its forward end to a power takeoff or transmission 46 which is connected with the operating engine of the truck or frame l5.

The sprocket 43 includes a toothed clutch 41 on the rear face thereof which confronts a toothed clutch 48 which is slidable, but non-rotatable on shaft 44. The frame I8 is held at substantially upright position by means of a pair of upwardly and rearwardly divergent supporting or bracing bars 49 which are pivotally connected at their rear ends to ears 50 which are fixed to the outer end portions of the beam 29. The supporting bars 49 are pivotally secured at their lower ends to pivot members I which project from a nut or slide member 52. The nut or slide member 52 is slidable in a tubular guide 53 which is fixed to a pair of transversely extending supporting bars 54 xed across the frame I5.

A screw shaft 55 is threaded through the nut 52 being journalled in the ends or heads 56 of the guide 53, and one end of the screw shaft 55 has fixed thereto a sprocket 51. A chain 58 is trained about the sprocket 51 and is also trained about a lower sprocket 59 which is rotatably mounted on the shaft 44. The sprocket 59 includes a clutch element 68 on the forward side thereof which confronts a complementary clutch member 6| which is fixed relative to the clutch member 48.

The two clutch members 48 and 6| are adapted to be shifted endwise by means of a shifting fork 62 connected with a shifting lever 63.

Referring now to Figures 7, 8, and 9 there is disclosed a modied form of carriage guide frame structure generally designated as 64. The frame structure 64 includes a pair of spaced apart parallel channel members 85 which are connected together by means of a plurality of connecting bars 66. The connecting bars 66 are of H construction, and upwardly convergent bracing bars 61 are fixed between pairs of the connecting members 66. The upper connecting member 66 has fixed thereto an upper sheave 68, and the next adjacent connecting bar 66 has secured thereto a lower sheave 69. The two sheaves 68 and 69 are similar to the sheaves 33 and 30 respectively.

An intermediate connecting bar 66 has fixed thereto forwardly projecting ears with which the bracing and tilting bars are adapted to be engaged. Lower forwardly projecting ears 1I are secured to the lower one of the connecting bars 66 and pivot means are adapted to be extended through the lower ears 1I for rockably securing the elevator frame 64 on the mobile or truck frame. It will be understood that the frame structure 64 will have mounted therein an elevator or lifting carriage similar to carriage 2|.

In the use and operation of this device the upright frame I8 is adapted to be secured to the rear of a conventional truck frame, and the power take-off 46 is connected with the transmission of the engine. When it is desired to pick up lumber or other material the carriage 2| is lowered to its lowermost point, and if desired the frame I8 may be tilted rearwardly at its upper end so that the arms 25 will be inclined downwardly and rearwardly. The truck may then be backed to the material, and when the material is engaged on the arms 25 the frame I8 may be swung upwardly and forwardly so as to be in a forwardly and upwardly inclined position. The

frame I8 is angularly adjusted with respect to the vertical by shifting clutch member 8| to engage clutch member 68. At this time screw shaft will be rotated to effect endwise movement of nut 52. Endwise movement of nut 52 will effect rocking or tilting of the frame structure I8. By having a carriage guide frame I8 which can be rocked or tilted to any desired angle when a relatively heavy load is mounted on the carriage or elevator the forward tilting of the frame I8 will have the effect of distributing the weight of the load forwardly, thereby eliminating any hazard of the forward end of the frame I5 being raised off of the ground by the weight of the load.

When a load has been placed on the carriage 2| the device may be shifted to any desired point, and the material can be disposed at any desired height by vertical adjustment of the carriage 2| This device has been produced as an attachment for conventional trucks and has been found to be more practical in the shifting 0f lumber than the material handling devices at present available.

What is claimed is:

A material handling device comprising a mobile frame, an elongated upright guide frame, oppositely disposed tracks on said guide frame, means pivotally securing the lower end of said guide frame to the rear of said mobile frame, an elevatable carriage movably disposed in said guide frame, a pair of lift arms projecting rearwardly of said carriage, a horizontal longitudinally disposed tubular guide carried by said mobile frame, said latter guide having a pair cf oppositely disposed longitudinal guide slots, a centrally disposed screw shaft journalled longitudinally of said tubular guide, a nut threaded on said shaft and slidable in said tubular guide, oppositely extending pins carried by said nut and loosely extending through said slots, a pair of upwardly, rearwardly and outwardly projecting bracing bars pivotally connected between said pins and said guide frame at an elevated point on said guide frame on opposite sides thereof, motor means for rotating said screw shaft, a pulley carried by said bracing bars adjacent the pivoted connection to said guide frame, a second pulley carried by the upper end of said guide frame, a motor driven winch, a cable extending from said winch about said pulleys connected to said carriage for moving said carriage up and down in said frame and clutch means for reversing the direction of rotation of said screw shaft.

JAKE B. TIPPS.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,379,472 Morgan et al. 1 May 24, 1921 1,388,831 Broady Aug. 23, 1921 2,169,440 Weiss Aug. 15, 1939 2,179,778 Dempster i Nov. 14, 1939 2,337,109 Johnson Dec. 21, 1943 2,444,835 Le Tourneau 1 July 6, 1948 2,527,928 Heath Oct. 31, 1950 2,532,717 Hawkins Dec. 5, 1950 2,542,425 Oliver Feb. 20, 1951

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