US1433426A

US1433426A - Lifting truck

Info

Publication number: US1433426A
Application number: US195326A
Authority: US
Inventors: Jr William Stuebing
Original assignee: STUEBING TRUCK Co
Current assignee: STUEBING TRUCK Co
Priority date: 1917-10-08
Filing date: 1917-10-08
Publication date: 1922-10-24
Anticipated expiration: 1939-10-24

Description

W. STUEBING, In.

LIFTING TRUCK.

APPLICATION FILED OCT. 8.1917.

FIG. 2

flrmmvmn W; STUEBING, Jn.

LIFTING TRUCK.

APPLICATION FILED act a. 1917.

, mm M. mm,

4 SHEETS-SHEE'I 2.

V 'lNI/ENTOR r i I Hrmmwmr.

mwmmm W. STUEBING, In.

LIFTING TRUCK.

APPLICATION FILED OCT. 8. I917.

4 SHEETS-SHEET 3- W. STUEBING, In.

LIFTING TRUCK.

APPLICATION FILED ocr. a. 1917i Patented (M. 241,, M2,

4 SHEETS-SHEE'I 4- Fatented Hot. d llllhdt tent . GUIltlPftlllY, F GINCINNATI, (EH10, A 00h:

marina am.

application filed hotelier t, 1191?. aerial No. waste.

To all whom it may concern:

Be it known that l, WILLIAM Srun srNo, J12, a citizen of the United States, residing to base frame and an elevating platform mov-.

able up and down with respect thereto.

Trucks of this class are usually used in connection with raised platforms u' on which the goods, articles or merchan ise to be movedor trucked is placed; the truck when lowered being capable of being moved in lit of the handle, the elevating platform is elevated lifting the raised platform with the to goods, up off of the floor; the truckcan then be moved to any point carrying the raised platform and goods, and when this point is reached the elevated platform can be lowered depositing the raised platform and its load; the truck can then be pulled out from under the raised platform. Many of these raised platforms can be used and with the goods upon them, may be trucked at will to any place desired. These lifting trucks can also be run in under machinery or other articles admitting of such entry and trucked to any point desired without the use of such raised platforms, or can be used in connection with platforms of peculiar construction, he or temporarily me for special use and conveyance.

ile the truck which I have now evolved may be used satisfactorily for transporting light or ordinary loads of a minimum or heavier weight, it is1especially designed and constructed for lifting and transporting loads of a very heavy or maximum weight.

The mechanism employed between the lifting truck platform and the handle for raising the load, is of a simple, unique and highly efiicient construction and nature, enabling me to elevate the lifting platform both by the downward and upward movement of the handle. 7

This truck is not only very powerful but strong and yet very simple in outline and construction.

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One of the salient features of the invention consists in the use oremployment of a pivoted U sha catches on eac the employment of two single independently mounted hook in connection therewith so that the ban le lever which carries two sets of engagement pins can be used in connection with both the U shaped link and the separate arms, so that the movement of the handle lever downward and upward enables the pins on said handle lever to alternately engage said mechanism to force an elevating of the elevating platform on both the downward and upward movement of said handle. under the raised platform'and by movement These links and hook arms readily and automatically-pass back into normal position when released from engagement with the handle lever.

In the following description I explain and illustrate one specific means for carrying my invention into efl'ect.

ed link having two hooks orof its arms, and furtherin arms operating automate In the accompanying drawings, forming part of this specification:

Fig. 1, is a plan view of the machine, Fig. 2, is a sideelevation of Fig. 1, Fig. 3, is a side view -of Fig. 2 with part of the frame broken away to show the lifting mechanism -of the truck,

Fig. 4, is the same view as Fig. 3, showing the lifting mechanism in a different position. Fig. 5, is the same view as shown'in Fig. 4, with the lifting mechanism in another position, v

Fig. 6, is a side elevation partly broken away showing the check mechanism and the platform in a raised position with the lifting mechanism disconnected from the handle,

Fig 7 is a reverse view of Fig. 2 with the .elevatlng platform in a raised locked position showing the mechanism disconnected from the handle.

Fig. 8, is a side elevation of the truck with the lifting mechanism partly broken away and the elevating platformpartly elevated,

Fig. 9, is the same view as Fig. 7, showing the lifting mechanism connected to the handle,

Fig. 10, is the same as Figure 3, with the I lifting mechanism and handle in a diflerent position, j

.11, is a plan view of the lifting mechanism' and treadle with truck broken away,

the frame of the i Fig: 12, is aside elevation of the lifting "hooks and partly broken away to show the spring connection between the hooks. Fig. 13, is same view as shown in Fig. 7,

withthe'platform in its lowered position,

1 i "the' lifting mechanism disconnected from the handle, beingfree for steering, and Fig. 14, is afront elevation of the truck.

3 I p The base is composed of four bars 14, Theseatthe rear on the axle 8 and at bars extend from the head 13 to'the shaft 8 and they, are fastened togetherat the rear 'bybolts 16 and at the front b bolts 17 and The base frame. carries our wheels 7: the front one wheel 21 is provided.)

.Th'e elevating platform or'upper frame is composed of four bars 1 connected'at the rear'b the tie bar 2 the sa dle 3.

' The elevating platformis suitably mountand at the front by ed on the base frame-by the links 4, rod 5 and the links 6 and 7 on the rear 'on shaft 8and at the front is mounted by the links 9, upper studs 10 and lower studs 12 to the head 13. By means of this construction the [upper frame is pivotally mounted onthe base frame and can thus swing up and down and horizontally. The upper frame or lifting platform as well as the base frame may be made of any other approved form.

'The head 13, at its center, has the bearing 19, in which I swivel the fork 20. At the lower end of this fork 20, I mountthe wheel 21 by means of the shaft 22. The upper end of the swivel carries the bearin 23, which supports the shaft 24; on the-s aft 24 I mount the handle 25, The handle 25 carries the pins 26 placed above the shaft'24. Handle 25 also has pins 27 placed opposite to pins 26 and below them, as shown in Fig. 3. On the saddle 3, I place the bearings 32, as shown in Fig. 1, and these bearings carry the shaft 28 upon which I pivotall mount the link or double hook 29. This 1i carries 1 the shaft 30 upon which I mount two hook arms 31 which are similar in design, as 50 shown in Fig. 1. The link 29 at-the

points

50 and 51 and the hooks 31 at the points 60 are so mounted and arranged as to conv nect with the

pins

26 and 27 of the handle 25 when said handle is moved down and up. On said shaft 28, I also mount the locking hook 33, which has a lug. 34 at one of its sides, whichlug extends out laterall under the double hook or link 29, as shown in Figs. d.-

7 and 11. On the head 13 I fasten the he ing hook 36 which has an engaging portion 37 which nieshes with book 33 when the 1 lifting plat form is in a raised position, to

maintain the lifting platform in said posi- 1; tion, (see Fig. 7.)

.On the head 13, I place the bearing 38 to which I vpivotally connect the treadle 39, which has a rearwardly extending portion 40 and a forwardly extending portion 41; the rearwardly extending portion 40 of the treadle 39 being placed under the pin of the locking hook 33 and said pin 35 riding upon the portion as a track when the elevating platform is being raised.

The double link or lifting hook 29 on shaft 28 and the lifting hook arms 31 on shaft 30 are connected together by means of the springs 42 and the action between the link 29 and the hook arms 31 is limited by means of the stops 43 on the hooks 31, as shown in Fig. 12. The initial strain in lifting the elevating platform when the handle is loweredcomes first on shaft 28 which carries link 29, designated by line X-X, Fig. 3, and the shaft 30 is in such a position and so mounted that it will receive this line of stran when the handle is elevated. This will "e more fully described hereinafter.

Between the bars 14ncar'the middle of the truck, I fasten the beam 44 and between this beam and the saddle 3, I suitably mount and fasten the fluid check device 45 which carries a spring 46 inside of the cylinder as shown in Fig. 6, to release the elevating platform, when the locking hook 33 is disconnected,- this springhaving been placed under stress when the elevating platform was lifted.

The link 29 is U shaped having two side arms united at their rear to form an integral member. .The two hooks 50 and 51 are present at the forward part of each arm. The hook arms 31 are each independently mounted and each carry the hook 60.

This link and the hook arms may be made of any desired contour and constructed in any suitable way to best carry out their functions. I

The truck operates as follows, to wit: The operator steps on the'treadle 39; this raises the rearward extension 40 of said treadle and in this raising movement the pin 35 is forced upwardly, consequently the hook 33 is lifted and its lug extending in under the link 29, raises the said link into connection with the pins 26 on the handle'25, they entering the hooks 50-of said link. The handle, in order to accomplish this engagement must be held in a proper upright position to meet the hooks 50 as they come u when the link 29 lifts, see for example. igs. 3 and 9.

In Fig. 13, theelevating platform is in its lowest position and the means for connect- 1 ing' to the handle disconnected from the handle. This is the position of the parts when the operator is ready to connect the handle and link '29, except that the handle be7raised to a vertical position. 1 showing the elevatingplatform in elevated raaaaae position, the

hooks

29 and 31 having drop ed down, the handle being shown elevate to better show how the parts are positioned to clear the handle for steering.

In Fig. 3, the link 29 is connected to pins 26 on the handle, showing said pins in the in which position the pins 27 will connect into hooks 60 of said hook arms 31, when said handle 25 is lowered. In this position elevating force between the elevatin the operator pulls down the handle, and

through the agency of the link 29and pins 26, raises the elevating platform 1 to a height shown in Fig. 4. It may be here remarked that when the lifting mechanism is connected as described and shown in Fig. 3, the line of form and the handle is on line X-- lln Fig. 4, the line X-X is shown with the elevating platform and handle in another position. The lifting force in Figs. 3 and .4 is

shown through the center of the lifting link 29 and pins 26 of the handle. In Fig. 4 it will be noted the handle is in its lowest position with the link 29- through theagency of hooks 50 in connection with pins 26 of the handle, and the arms 31 through agency of hooks connected to pins 27 of the handle. The operator now lifts the handle upwardly, as shown in Fig. 10, the hook arms 31 through agency of hooks 60 being connected to pins 27 the upward movement will further raise the elevating platform 1, thus chang-' ing the position of line X, X, through the center of shaft 28, shaft 30 and pins 27, thus causing link 29 to raise, (see Fig. 10).

lln *ig. 10 the handle is partly raised to start on the above described operation. It will be noted that pins-26 are riding into a position to connect automatically in hooks 51. The link 29 is held in automatic connecting relation with the pins 26 throuh a ency of the elevating force, On-lineX- hen the handle 25 is now moved upward the pins 26 are moved forward with the handle and as soon as they reach the hook 51, the hook parts 51 wi l receive the said pins 26 as the link 29 moves upward when this point is reached and assumes the position shown in 5. This movement elevates the lifting platform 1 to a still higher degree as shown in said figure, the handle being again in a vertical position and the books 60 of hook arms 31 being still in connection with the pins 27 on handle 25, and the line of elevating force is on line XX and this force changes its position only when the handle is again brou ht down as shown in Fig. 8. The next step in the elevating compels the operator to again lower the handle from the position w ll shown in said Fig. 5, and 8 shows the handle 25 partly lowered, the hooks .51 of link 29 enga ing pins 26 on the handle and the pins 27 iavin the position in hook 60 of hook arms 31, tie arms 31 having ridden under the said pins 27 through agency of gprllgs 42, and the line of elevating force has taken its original position as seen in Fig. 3.

As the operator now pulls down the handle with its pins 26 connected in books 51, as shown in Fig. '8, the platform 1 will be elevated to its highest point and will be maintained in that position by the holding and locking means. T

Figure 6 shows the pedal in position whereby hook 33 is disconnected from hook 37 on head 13, this relieves the stress on spring 46' of the fluid check device and the sprin pulls down the platform or gives itan initial impetus asthe case maybe antl consequently the elevatin automatically to lowest linorm'al) position; Fig. 7 is a similar view to thatshown inFig. 6' but the holding hook-which holds up the elevating platform in raised position is not disconnected The elevating 'platform is here shown at its highest limit. Fig. 9 is a view similar to that shown in Fig. 3, however, showlng an opposite side.

of the truck, with the mechanism for lifting the link 29 and hook arms 31 in operative position with handle 25. During this last ward on the pin 35 of the book 33 disconnects the hook 33 from the surface 37 of the book 36 and the elevating platform is brought to its normal. position again by reason of the stress being relieved on spring 46 in the check 15, see Fig. 6.

While I have described one means for carrying my invention into effect, 1 wish to be understood as not limiting myself to the construction herein shown and described, as the same is capable of considerable change and modification without departure from the principle and spirit of the invention, and I wish to be understood as claiming that such modifications will still fall within the scope of my 'inventionplatform 1 lowers steps on the pedal 39;.this raises .the extension 40 of said treadle which; pressin up-.

- the handle;

What I- claim as newv and m invention and desire to secure bylietters atent is: I

1. In a lifting truck, thecombination with a wheeled base, an elevating-platform andpivoted'steering handle,-of means for connecting said platform to-said handle toelera I link and hook arms, said link and hook vate said platform, comprising a; hinged coupling member having double hooked arms and .carrying two. independently hinged'hook arms-[and meansifor, raisin said coupling member-into engagement wit I 2. Ina lifting truck, the: combination with a wheeled base," anfblevating platform mounted on said- -base, ,a pivoted handle at one end of said base for wheelin and. steering the load and elevatin 'sai platform,v means for connecting'saidandlei and lat,-' form for elevating the latter, comprising rigid coupling members'on-one. of said parts, and a hingedcoupl-ingmember connected to the, other of said parts normally out of connecting range with .said rigid coupling members and adaptedto, be moved into connectiontherewith for. elevating said platform, said hinged coupling-member carr ing two separate sets of hook .arms, said hookarms adapted to engage certain: of the rigid members atpredetermined times dur-g ing theraising of the elevating platform. 3.- Ina lifting truck, the combination with 1 a. wheeled base, an elevating platform' mounted on said base, a pivoted handle at one end of'said' base for wheelin and steering. the load 'and elevating said platform, means forconnecting said handle and plat-' form for elevating the latter, consisting of rigid means on the handle and a -hinged member on the platform carrying hook arms, said hinged member and said hook arms adapted to engage the rigid means on the handle. at predetermined times as the handle is lowered and v 1aised- 1 ;o elevate the lifting latform. 4.

a wheeled base, an elevating platform mounted on said base, a pivoted handle at one end of said base for wheeling andsteermounted on saidbase, a

ing'the load and elevating said'platform, means for connecting said handle and platform for elevating the latter comprising twosets of pins on said handle and a pivoted link on the platform provided with hooks, said link carrying two independently to elevate sai means for connecting said handle and platform for elevating the latter comprising two sets of pins on said handle and a piv- 'oted link on the platform provided with hooks, said'link carrying two independently mounted hook arms, springs between said arms'en aging and disengaging the said insdur ing the downward and upward stroke of the handle, as the lifting platform is being elevatedv .e g v 6. In a lifting truck, the combination with a wheeled base, an elevating platform mounted on said base, a pivoted handle at one end of said base for wheelin and steering the load and elevating sai platform, pivoted means on the elevating platform, means on the handle for engaging therewith to form a platform elevating means, oper able to raise the platform during both the downward and upward movement of the handle,

7. In a lifting truck, the combination with a wheeled base of an elevating latform mounted thereon, a pivoted hand e at one end of said base for elevating said platform and for wheeling and steering the load, pivoted means between the elevating platform and said handle operable to raise 1 the platformduring both the downward and upward movement of the handle, said means capable of being connected and disconnected. 1 -8. In alifting truck, the combination with a base, an elevating platform and a pivoted steering'handle, of means for connecting' said platform to said handle to elevate said platform, comprising a member normally; out of connecting position when the handle is used for steering, the means for connectin said platform to said handle 5 platform capable of elevatin said platform. 'on both the downward and I v I I upward stroke of said handle. na lifting truck, the combination with',

9. In a lifting truck, the combination with awheeled base, an elevating platform mounted on said base, a pivoted handle at I one end of said base for wheeling and steering the load and elevating said platform, means on the elevating platform, means on thehandle for engaging therewith to form a platform elevating means, operable to raise the platform during both the downward and upward movement of the handle.

10. In an elevating truck, running wheels, a platformmounted for elevating movement thereon, means for elevating the platform in successive steps, means for holding the platform against retrograde movement between said steps, and means separate from the last-named means for holding the platform in its completely elevated position.

11. In an elevating truck, running wheels, a platform mounted for elevating movement inaaaae said steps, means separated from the last named means for holding the platform in its completely elevated position, said first named holding means being constructed and arranged to remain inoperative during the lowering of the platform from its maximum elevation.

12. In an elevating truck in combination, running wheels, 4 aplatform mounted for elevating movement thereon, a pivoted steering handle for said truck, means for elevating said platform in a step by step manner by the successive swinging of said handle, comprising a link for effecting a direct connection between said handle and said platform. r 1

13. In an elevating truck in combination, running wheels, a platform mounted for elevating movement thereon, a pivoted steering handle for said truck, means-for elevating said platform in a step by step manner by the successive swinging of said handle comprising a link for eflecting a direct connectlOIl between said handle and said platform during the swinging movements of said handle in one direction, said connection being interrupted during the swinging movements of the handle in the other direction and means for holding the platform in its partially elevated position during the interruption of saidconnection.

14. In an elevating truck in combination, running wheels, a swivelled steering head, a platform mounted for elevating movement,

an operating lever pivoted on said steering head, means for elevating said platform by In testimony whereof I-aflix my signature in the presence of two witnesses. WILLIAM STUEBING, J n.

Witnessesi H. CAnsrnNs,

I. M. DUNLAP.

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