US1303601A - schultis - Google Patents

Description

C.,F. vSCHULTIS.

ELEVATING TRUCK.

APPLICATION FILED Nov. 3. 191s.

MWK

C. F. SCHULTIS.1

ELEVMING TRUCK;

APPLICATION FILEB NOV. HHS.

l'fwtentd May 13, 1.919.

2 SHEETSHSHET 2.

'31: @xfa TED sfri'i'ins' PATENT orrioii.

CHARLES F. SCI-IULTIS, OIF CLEVELAND, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE STANDARD PARTS COMPANY, OF CLEVELAND, OHIO, A CORPORATION F OHIO.

ELEVAT1NG-TRUCK Specification of Letters Patent.

Patented May 13, 1919.

Application led November 3, 1916. Serial No. 129,258.

To all whom it may' concern:

Be it known that I, Ci-IARLESv F. SoHULTIs, a citizen of the United States, residing at Cleveland, in the countyl of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Elevating- Trucks, of which the following is a'full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to trucks, and more particularly to what are known to the trade as shop trucks which are employed in factories for the transportation of articles, 'the trucks bein propelled in any suitable Inanner. It is t e general object of this invention to provide a truck of the character described which may be placed beneath a platform containing articles to be transported and havin a table or load-carrying part which may 4 e elevated to enable it tolift the platfoi'm with its load and which, when the 4 platform and load have been transported to the desired unloading station, may be conveniently lowered until the weight of the platform is taken from the truck, whereupon the truck may be transported to another similar platform and the operation be re'- peated. Still further and more generally stated the invention may be defined as consisting of the combinations of elements embodied in the claims hereto annexed and illustrated in the drawings forming part hereof wherein Figure 1 represents a perspective view of the truck and load-carrying platform; Fig. 2 a longitudinal central sec' tion taken through the truck; Fi 3 a horizontal sectional View correspon ing to the line 3-3 of Fig. 2; Fig..4 a transverse sectional view correspondin to the line 4-54 of Fig. 3; and Fig. 5 a detail corresponding -to the line 55 of Fig. 4, certain parts being shown in elevation.

Describing by reference characters the various parts illustrated herein, 1 denotes enerally the bed or frame of the truck, said ed or frame comprising a floor 2 having vertical sides 3 and ends 4, 4". rIhe bed or frame is preferably formed of a casting and is provided with acentral longitudinal rib 5 forming a brace between a rear bearing sleeve 6 and a front bearing sleeve 7. On its upper surface, the floor 2 is provided with a pair of ball races 8 and 9 surrounding the sleeves or hubs 6 and 7, respectively, and preferably cast' with the door. y

10 and 11 denote, respectively, a rear and a front worm wheel, Yeach having a rigid ball race 10? and 11El respectively, preferably cast therewith, there being balls 12, 12a interposed between said races. Each worm gear as rigid therewith a circular track, coaxial with a central sleeve or hub 13, 14, and each track has two inclines 15 and 16 respectively,

providing a air of inclines for each worm y `21 forminga skirt extending about the upvvardly proJecting sides and ends of the bed or frame 1. The table, with its sides and ends, is preferably formed by casting, the sides and ends of the table being provided with machined bearing surfaces 22 coperating with correspondin machined surfaces 23 on the walls of the ged frame, whereby the table will be guided and centered as it is reciprocated. 24 denotes triangular brackets which depend from the floor 19 and which are formed with bearings for the shafts 25 of rollers 26, there being a pair of such brackets for each roller. Four such lrollers are provided, the rollers being arranged in airs at the front and at the rear of the platorm, the 4rollers of each pair being 180 apart and being so arranged as to ride upon- `the tracks 15 and 16 respectively.

The rear axle 27 maybe supported in any convenient manner by the bed 1, said axle having wheels 28fon the .outer ends thereof. From lthe front wall 4a there extends a yoke, preferably cast therewith, said yoke comprising a pair of upwardly inclined converging arms 29 provided at their junction with a ioo yoke arms 29. The truck illustrated herein is a small or'hand propelled truck and is provided with the tongue 36 which is pivotally connected to the ends of the shaft 33 by means of ,a yoke 37 For the purpose of rotating the worm gears 10 and 11 and the tracks carried thereby, the following construction is provided 38 denotes a post which may be cast with a bracket 39 in front and at one side of the v bed `iframe. 40 denotes an inclined brace for said post, the brace being preferably cast with the post and riveted or otherwise suitably secured to one of the yoke arms 29, as indicated at 41. 42 denotes a sprocket which is journaled on the upperend of an extension '38 of the post 38 and provided with an operating crank arm 43. 44 denotes a sprocket whlch is rigidwith a worm shaft 45 extending lengthwise of the skirt 20a and supported by journals 20b projecting laterally therefrom. Bower-may be transmitted from the sprocket 42 to the sprocket 44 as by means ofa noiseless chain 46.` The shaft 45 is provided with a pair of worms 46 and 47 meshing respectively with the`- worm gears 10 and 11. The extension 38a is socketed into the top of the post 38 and may be adjusted longitudinally of said post 'to compensate for the wear of the chain 46, a set screw 38b being employed to retain the extension in its various adjusted positions, the extension having a flattened tapered surface 38c for engagement by the set screwsee Fig. 5.

With the partsconstructed and arranged vas described, the operation will be easily understood. The truck, with the table in its lowered position, is placed beneath the.

load-supporting platform. 48, the rollers 26 at this time being on thelowest portion of their respective tracks. -The crank 43 1s operated thereby driving the worm shaft 45 and rotating the worm gears l10 and 11,

' which will cause the rollers 26 to ride up the inclines l5 and 16 'until the platform 48 with its load has been lifted, whereu on the truck may be transportedtothe desired unloading station and, by operating the' crank 43 farther in the same direction, or inthe reverse direction, the table 19 will be loweredV and the platform 20 will be positioned on the ioor, `whereupon the truck may be transported to. another place and the operation repeated. f The construction of truck disclosed herein is extremelysimple and economical of production, since practically all of the parts may be made as castings, but is extremely convenient and efficient in operation. While I have shown my invention as embodied 1n l a small hand-propelled truck, it will be evident that it is capable of being embodied in various forms and constructions of vehicles;

and I do not propose to be limited to the details of construction illustrated herein eX- cept as such limitations may be positively included in the claims hereto annexed or the inclusion of such details may be rendered necessary by the state of the prior art.

I claim- 1. In a vehicle of the character described, the combination of a frame, a load carrying table having a dependin skirt, said skirt being spacedfrom said rame, interengaging guides carried by said skirt and the frame, and means for raising and lowering the table with reference to the frame.

' 2. In a vehicle of the character described,

.the combination of a frame having upwardly extending sides and ends, a loadcarrying table having a depending skirt arranged externally of the said sides and ends, said skirt being spaced from said frame, interengaging guides carried by the skirt and said sides and ends, and means for raising and lowering .the table with reference to the frame.

3. In a vehicle of the character described, the combination of a frame, a pair of longitudinally spaced horizontally disposed rotary inclined tracks carried by said frame, a load carrying table having means adapted to engage said tracks, and means for rotating` said tracks thereby to raise and lower said table with reference to the frame.

. 4. Inan apparatus ofthe character described, the combination of a frame, a pair of horizontally disposed gears rotatably mounted on said frame and spaced longitudinally thereof, an inclined track carried by each of said gears, a table having depending rollers adapted to engage the upper surface of said tracks, and means for driving said gears, one in the counter-clockwise direction and the other in-a clock-wise direction thereby to raise or lower said table.

5. In a vehicle of the character described, the combination of a frame, a pair of gears journaled on said frame and rotatable each about a vertical axis, a continuous inclined track carried by each of said gears, a table having depending rollers adapted to engage said tracks, and means for driving said gears thereby to raise and lower said table.

6. In a vehicle of the characterdescribed, the combination of a frame having a pair of gears supported thereby \and rotatable each abouta vertical axis, a track carried by each of said gears, .each track having two circumferentially spaced inclines, a table having a roller for each inclined portion of said tracks,l and means for driving the gears simultaneously in opposite directions thereby to raise and lower said table.

7." In a vehicle of the character described,

the combination of a frame having longitudinally lspaced supports for verticallyr ex- I tending'shafts, means for' bracing said supports, and a racew'ay surrounding each of said supports, a vertical shaft in each of said supports, va gear on each of said shafts each having a raceway corresponding with the raceway on the frame, anti-friction devices interposed between said ra/ceways, an inclined track carried by each of said gears, a table, means carried by the table adapted to engage each of said tracks, and meansfor kdriving the said gears thereby to raise and lower the table.

8. In avehicle of the character described, the combination of a frame, a pair of worm gears supported by said frame and rotatable each about a vertical axis and each having a lrotary track provided with an incline, said trac-k being coaxial with said gears, a shaftcarried by said bed or frame and having a worm meshing with each of said gears, and a table having means adapted to engage the tracks whereby the table may be raised and lowered by the rotation of the said shaft.

9. In a vehicle'of the character described the combination of a frame having a pair ofi longitudinallyspaced hubs and a ribconnecting said hubs or sleeves and provided with a raceway surrounding each hub, a shaft in each hub, a gear on each shaft and each having a raceway coperating with one of the first-'mentioned raceways, there being anti-friction devices interposed between said raceways, a circular trackV on each of said gears, each track having a' pair of opposed inclines, a table, rollers depending from said table and adapted to engage and be operatedby the inclined portions of said tracks, a shaft,` and gears on said shafts cooperating with the rst mentioned gears whereby the rotation oi the shaft will operate said gears to raise and lower said table.

10. In a vehicle of the character described, the combination of a frame, a pair of longitudinally spaced gears carried by `the bed or frame and eachrotatable about a vertical "axis and each having an inclined track, a

table having portions adapted to engage the tracks, a shaft having gears thereon adapted to mesh with the first-mentioned gears, a sprocket on said shaft, a post projecting upwardly from the said frame, a sprocket on said post, a chain coperating with said sprockets, and means connected with the sprocket on thepost for rotating the same.

11. In a vehicle of the character described, the combination of a frame having cast therewith a pair ofcircular raceways, a pair of gears each having a circular racewa c0- operating with one of the first mentioned raceways and each having a circula;` track provided with a pair of oppostely disposed inclines, a table having a depending skirt formed therewith, the said skirt and the bed or frame having interengaging guides, rollers depending from the table and ada ted to engage the inclines on thetracks, a s aft CHARLES F. SCHULTIS.

Images