US1827692A

US1827692A - Lifting truck

Info

Publication number: US1827692A
Application number: US509649A
Authority: US
Inventors: Vik Olav
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-01-19
Filing date: 1931-01-19
Publication date: 1931-10-13
Anticipated expiration: 1948-10-13

Description

o. VIK

LIFTING TRUCK Filed Jan. 1s, 1931 g oct. 13, 1931.

1. .rl-r L.

Iw tu 11 wfg Patented Oct. 13, 1931 OLAV VIK, OF MINNEAPOLIS, MINNESOTA LIFTIN G TRUCK Application led January 19, 1931." Serial No. 509,649.

This invention relates to lifting trucks for lifting and. transporting" stands on which goods are piled in a. mill or shop from one place to another.

It is the ob`ect of this invention to provide a lifting trucfr of novel and improved design, which can be inexpensively made and can be readily operated.

. To kthis end the invention consists in the l@ novel. parts and novel combinations of parts hereinafter defined in the claims and described in the following specification, made in connection with. the accompanying draw- Y ings wherein like reference characters refer 'i5 to the same or similar parts throughout the variousl views and,I in which,

Fig. 1 is a plan View illustrating the lifting truck ofthe present invention;

Fig. 2 is a vertical section taken longitudimuy of the truck on the une 2 2 of Fig. 1,

asV indicated by the arrows and illustrating certain of the movable parts in full lines in one position and in dotted lines in another rr* position;

2" Fig. 3 is a view in end elevation of the truck; and.

Fig. 4 is a view in side elevation of the truck placed under'a stand adapted to be lifted and moved by the truck, certain of the parts of the truck andthe stand being illustrated in full lines in one position and in dotted lines in another position.

Referring tothe drawings, in accordance withthe present invention, there is provided a lower frame 4 which -is preferably of rectangular shape and is of greater length than width. The frame 4 as illustrated, is formed from angle iron having vertical flanges forming the ends and sides of the frame and in- 40 wardly projecting horizontal flanges joining the vertical. flanges at the upper edges thereof. Secured to the horizontal flanges of the frame 4 at the four corners thereof and below'the horizontal flanges are plates 5 of i substantially triangular shape, which plates serve to brace and strengthen the frame 4 and 'form seats upon whichswivelled castors 6 are mounted. The castors 6 support the frame 4in spaced relation from the floor or theground' and at the same time permit the truck to be moved from one place to another and steered as it is moved. An upper frame 7 also preferably rectangular in shape is located above the frame 4 and is of the same length and width as is the frame 4. The frame 7 is also preferably constructed from angle iron' and has vertical flanges forming the ends and sides of the frame and inwardly projecting horizontal flanges joinl ing the lower edges of the vertical flanges and adapted to rest on the horizontal flanges of the lower frame 4 when the upper frame 7 is in lowered relation relative to the frame 4. Secured to the upper sides of the horizontal flanges of the upper frame 7 at the four 65 corners thereof, are plates 8 of substantially triangular shape and these plates serve to brace and strengthen the upper frame. Secured to the end horizontal flanges of the upj per frame 7 adjacent the two sides of the up- 70 per frame are downwardly projecting pins 9, which'extend through openings in the end horizontal flanges of the lower frame 4 and the lower plates 5. The pins 9 have reduced portions adjacentv their upper ends which projectthrough the horizontal end flanges of the upper frame 7 and are fixed in the upper plates 8 and the reduced upper portions of the pins form shoulders which bear against the bottom surfaces of the end horizontal flanges of the upper frame.

A pairof oppositely disposed bearings 10 are secured as by bolts 11 to the central portions of the horizontal side flanges of the lower frame 4 and a shaft 12 fits within these 85 bearings lOand extends transversely below and between the sides of the lower frame 4. The shaft 12 projects beyond one side of the frame 4 and has secured thereto, an arm 13 which serves as a handle for rocking the shaft. A U-shaped stop member 14 secured to the same side of the lower frame 4 cooperates with the handle 13 to permit rocking movement of the shaft 12 through only slightly more than Cams 15 are mount- 95 ed on the shaft 12 adjacent to but inwardly disposed from the sides of the lower frame 4. Collars 16 are also mounted on the shaft 12 to prevent lateral shift-ing movement of the shaft. The collars 16 abut the bearings 10. 100

Transverse shaftsor rods 17 are mounted in i and extend between the vertical side flanges of the lower frame 4 adjacent but inwardly Y spaced from the ends of the frame. These shafts 17 may be conveniently secured to the Y vertical side flanges of the lower frame by the' otherV side of 3.0 so that thevtwo cylindricalportions 20a theremeans'of oppositely disposedwjamb nuts 18 screw `threaded on the shafts f17. yPairsof spaced Collars 19 are mounted on the shafts 17 adjacent the ends thereof but rinwardly disposed from the sides ofthe lowerframe:

will be swung' and these pairs of spaced collars are preferably in substantial longitudinal alinement with the cams 15. Pivotally mounted adjacentreach end of the two shafts 1'T'betwe'en" pairs rof- `collars 19'are levers 20* andeach lever20 has a'short outer arm extending belowv and bea-ring againstthe 4lower end of one of the pins 9. Each lever 20 also has along inwardly extending arm terminating in'y a short upwardly extending cylindrical portion 20a which bears against the'lower surface vof one of the cams 15. `The long inl. wardly'extending armsofrthe levers 20 at ,one sideof the truck are so bentthat the twoxcylindrical portions 20o thereof may vboth bearagainst a singlecam 15,*while similarly thel longv armsof 'the two levers 2O at 'the truck are likewise bentof may bear againstthe lower surface of the Y other cam 15.

In Fig. 4 there is illustratedal stand A adapted` to be lifted andmoved-fromvone placeto;V another by-means ofy the present truck. .The-fstand'A Vmayconsist merely of al A horizontal supporting; surface 4 21 upon which goods are adapted to be piled and v spaced Ydownwardly extending sides or legs 22`afdapted to hold they supportingsurface 21 in spaced relation a-b'ovef` the Hoor or ground,

`so that the truck of the presentinvention may be run'- sideward'belowthe supporting surface.: 21 and between the sides22. when the 1 upperfra'me 7 rests on-.the lower. frame y4.

When the upper frame. 7 of the'truck rests on the lowerframe 4, the cams ,15 .will be upwardly swung' to the1 full line positions illustrated in- Figs, 1,2, 3f and.4'. lnthis rposition the-handle arml?) will engage one side of` the'U-shapedstop memberf14. Of course',

, the levers `2() will take thevposition illustrat i edin full linesFigs. 1, 2,3 and 4. When Y inner arms of the; parts arci-n this position, the truck may beiv run 'u-nderne'ath the. stand A, whereupon the arm 13-1nay be swung through slightly more` than 180 to engage lthe other 4side of theU-shaped stop"v member 14. .l The shaft-12 will accordingly be rocked and thecams-15 willbe swungdownwardly to the dotted line positions shown in-Fi'gs.V 2, causing the'long the levers 2()V to be depressed. The` short outer arms of the levers will be raised and the'pinsv 9 willalso be raised thereby liftingthey upper frame l7 and thestandA together with whateverY goods may be piledv upon the stand. The stand A'will be raised kso that the legs or' sides 22 are clear of the then be ground or floor'and the truck may 'pushed to the position desired, whereupon the shaft 12 may be swung back to its original position to allowthe standv to be .again -lowered tofrestv on the .licor or ground `and the truck can then bey moved from underneath the stand.V As the shaft is rocked from one extreme positiontoxtheotherthe cams'15 gage the cams when the cams aredownwardly swung to the dotted line position. l :There will thusbe no tendencyy when the upperframe 7is. once lifted f r thepn'ppenframe to fall backagain on the lower Vframe untilafter the lever 13 Itwill, ofcourse, be understood that varibemade in the form, details,

ous changes may arrangementandlproportions of the various parts without departing: from the. scope of therpresent invention.

What is claimed is 1. A..li fting truck comprising a, lower wheeled frame, an upper `frame normally resting kon 'said lower frame, alshaftmounted in said`v lower frame', arcam carriedzby said shaft, levers pivoted-in" said lower frame' andhaving arms bearing against said cam.- and armsbearing. against portions of said upper fra-me, and means for swinging said shaft to rotatesaid camr and swing said levers to raise vsaid upperframefrom said lower frame.

v 2. kA, lifting: truck comprisingy a lower wheeled` sframe, an upper frame normally resting on said lower frame, a` shaft journaled in said lower frame, arpairr'of cams carried by said shaft, four levers pivoted to said lower frame, said levers each having anarm bearing against one of said cams and an'arm Lextending toa pointadj acent a corner of Ysaid upper framefandfbearing" against a portion ofsaid upper frame and means forl swinging said shaft to swing said levers and thereby raise and lower. saidupperframe relative to said lower. frame.; V U. Y. '3. A-lifting truckcomprising alower'frame mounted on wheels, an upper frame Vnormally resting on'said .lower frame, pins secured to said upper fra-me andl projecting downwardly throughopenings in said lower frame, a shaft journaled in Vsaid lower frameand extending transversely thereof, a pair of cams mounted on said shaft, levers pivotallyry mounted on said lower-frame; and havingl armsV extending so that the points where the` oylindricalvportions 20a of the levers 20 enareslightly past dead center below and bearing a ainst said cams and also having arms exten ing below and bearing against said pins and means for swin ing said shaft to in turn swing said levers an thereby raise and lower said upper frame relative to said lower frame.

4. A lifting truck comprising a castor equipped lowerrectangular frame, a rectangular upper frame resting on said lower frame when in lowered position, pins mounted in said upper frame adjacent the four corners thereof and projecting downwardly through openings in said lower frame, a shaft journaled in said lower frame and extending transversely and centrally thereof, a pair of shafts mounted respectively adjacent the ends of said lower frame and extending transversely thereof, pairs of levers pivotally mounted adjacent the ends of said klast two mentioned shafts and having inner arms extending below and bearing against said cams and having outer arms bearing respectively against the lower ends of said pins and means for swinging said first mentioned shaft.

5. The structure defined in claim 4 and stop means limiting the swinging movement of said first mentioned shaft to slightly more than 180.

6. A lifting truck comprising a lower frame of rectangular shape, castors supporting the four corners of said lower frame, an upper frame of rectangular shape supported on said lower frame when in lowered position, members secured to said upper frame and 'projecting downwardly through openings in said lower frame, a. transverse shaft centrally journaled in said lower frame, a pair of cams mounted respectively adjacent the ends of said shaft, a pair of transverse shafts mounted in said lower frame adjacent the ends thereof, levers pivoted on said last mentioned shafts adjacent the ends thereof, the two levers adjacent similar ends of the two last mentioned shafts having inwardly 46 extending'arms projecting below and bearingagainst one of said cams and the levers 1 adjacent the other ends of the said two last mentioned shafts having inner ends bearing against the other of said two cams, the outer 50 ends of respective levers bearing against said respective members and means for swinging said first mentioned shaft.

In testimony whereof I affix my signature.

OLAV VIK.