US1364416A - A corpora - Google Patents

Description

M. s. TOWSON AND 0. IE. cocnnm.

INDUSTRIAL njwcx, APPLICATION FILED MAR. H). 1919.

Patentd Jan. 4,1921.

3' SHEETS-SHEET 1 M. S. TOWSON AND C. E. COCHRAN.

INDUSTRIAL TRUCK.

APPLICATION FILED MAR. 10. 1919.

1,364,416. Patented Jan. 4, 1921.

3 SHEETS-SHEET 2- marzmelnpummml L M. S. TOWSO'N AND C, E. COC HRAN.

INDUSTRIAL TRUCK.

APPLICATION FILED MAR. I0, 1919.

Psite nted Jan. 4, 1921.

3 SHEETSSHEET 3.

UNITED STATES .PATENT'YO'FFICE. MORRIS s. rowson AND CLYDE n. ooonnnn, or cLEvnLANn, cine, Ass IGnoBs 'ro THE ELWELL-PARKER ELECTRIC COMPANY, or oLEvELnm), 01:10, A] oonronng non or 0310.

To all whom it may concern:

Be it known that we, MORRIS S. ToWsoN and CLYDE E. GOCHRA'N, citizens of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Industrial Trucks, of which the fol lowing is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to an industrialautomobile truck having a load support adapted to betilted by powermechanism, enabling the truck to receive a suitable standing load, tip it overabove the running; gear of the truck and then,fafter transporting it, deposit it in the standing position. The invention is shown as embodied in a truck designed particularly. "for handling large rolls of paper, suehas, are used for web printing presses. In such embodiment there is provided the truck proper with its running gear and propelling mechanism, and a suitable platform hinged adjacent to the rear end of the truck, and mechanism for tipping the platform about SllOlh-PIVQU into an approximately uprlght posltion in,

which the upright roll of-paper may be secured to it, the reverse movement of such tiping mechanism then restoring, the platform to a substantially horizontal position for transportation. This particular form of our load handling truck is shown in the drawings hereof and is hereinafter more fully described. The essential characteristics of the invention, which are. illustrated by this embodiment, are set out in the claims.

In the drawings, Figure 1 is a side elevation of the truck, showing in full lines the platform in transportation position witha roll of paper thereon and showing in broken Specification of Letters Patent.

INDUSTRIAL 'rnucx.

tion'al elevation of the operating screw and the worm .wheel which constitutes. a nut therefor, thls view being at right anglesto ported by rear wheels 11 and azpair of'for-' ward wheels These forward wheelsare PatentedJan.4,-1921. Application filed March 1o,-191;. .a;1 a. 231,114.

s shown in 'and 2, 10 indicates,

. the frame or body of the truck, which Is sup-. 6 i

on o posite sidesiof a front housing 13-compose of upright and transverse members securedto the frame bars 10. This housing carries a suitable motor lifor driving the front wheels and has'a'space 15above for a storage battery. The front wheels are steered in any suitable manner, as indicated by the steering lever; 16. The construction of the frame, wheels, motor, etc., already,

described does not enterin'to the present in March 19, 1918, to The'Elwell-P'arker Elecvention. They may be formed, if desired, according to Patent No. 1,260,145, granted tric Company as'assignee of Clyde E. Coch- In the present invention we secure to the frame bars lOoat' their rear ends, a pair of brackets 20 which extend upwardly and rearwardly. At. their. upper ends thesed brackets pivotally carry the cradle or platform which receives the load, and will [be specifically varied in form according to the characterof the load. a As shown, thisplat form consists of a'fpair' of outwardly facing channelbeams 3Q' and anfintermediately dey 1 pressed cross plate 31 secured to the upper flanges of the channel beams. The depression is adapted'to laterally position a roll of brackets 20 to thesebeams isshown'as er: fected by a transverse shaft 25. connectingv so I paper designated A. The pivoting of the",

the upper ends of the brackets 20 with eyes in b1ocks'32secured to the under sides of the beams 30. The construction described s V makes an effective and firm pivoting of the platform to the'truck frame.

gearing being arranged to pull or push a To operate the platf rm, we connect it by rod longitudinally, whichoperates the link age system. This will now be described. 1

Each of the brackets 20 has a portion extending downwardly at the rear end. of the l truck frame. To these downward extensions are pivoted at 26 a pair of links 40," the shown ashaving eyes on their forward ends surrounding the shaft 41, and'at their rear ends having eyes through which extend pins into blocks 44 secured to the inner faces *of the platform frame bars.

The central portion of the shaft 41 is embraced by an eye in the end of a main link 45 which at its forward end has aneye em bracing a shaft 46. This shaft is mounted through-shaft 49 extending across the truck in the upper ends of a pair of arms 47 pivoted at their lower ends to brackets 48 carried by the truck frame bars 10. This pivoting is shown as effected by means of a frame. In the arms 47 we mount a transverse rod 50 which is embraced by an eye 51 on the rear end of the push and pull rod 52'. This pushand pull rod may be said to form the operating member of the linkage system described. It is suitably connectedwith the motor driven gearing and furnishes the. means for actuating the mam link 45; ThlS.

will be hereinafter described. For the present it may be noted that a forward pull on this main link carries the mechanism into the ultimate position shown in Fig. 2, wherein the platform is nearly vertical, whereas a rearward push onthis'link shoves on the toggle knuckle 41, straightening the toggle composed of the links 40 and 42 and bringing the platform into the horizontal position shown in Fig. 1.

It will be seen from Fig. 1 that when in transporting position the bulk of the load is carried by the shaft 25 and brackets 20 to the truck frame. A portion of the load is carried by a horizontal bracket 18 secured to the rear face of the forward housing 13. The straightened toggle makes a strut between the rear portion of the load and the lower end of the brackets 20 and steadiesthe load.

Rolls of paper are frequently stored on their ends. When used for transporting such roll, the roll may first be very readily tipped up slightlyon one edge and the truck with its platform or cradle upright backed against the roll so that a cleat 35 on the rear or lower end of the cradle lies beneath the elevated bottom edge of the roll; then the roll is tipped over in the other direction to lie against the cradle and is secured by passinga cable aroundthe upper portion thereof, as illustrated in Fig.2, where the cable 38 extends about the roll and at its ends hooks onto pins 39 extending outwardly from the cradle beams.

After the roll of paper has been clamped to the cradle, a push on the rod 52 shoves the linkage system rearwardly, shoving on the toggle joint 41, straightening the toggle to tip the load over in the position shown in full lines in Fig. 1. After the center of gravity of the load has passed to the front of the shaft 25 the weight of the load tends to assist in the straightening of the toggle, and the mechanism of the;op erating;rod 52 then holds back the load to prevent too rapid descent. In unloading, a pull on the rod 52 swings the load into the position shown in Fig. 2, whereupon the cable clamp 38 is removed and the roll'tipped into a more nearly vertical position, after which the truck pulls away from it, allowing the cleat 35 to clear the roll, leaving it standing upright in its new position.

It will be seen from the description of operation that the mechanism must be able to effect at will a pull or push on the rod 52 and to hold that rod against movement independently of such mechanism. The operating mechanism which we have shown for effecting this push and pull is substantially that shown, described and claimed in the patent heretofore mentioned. It will be now more fully explained. I

The push-and-pull rod 52 extends into a housing 60 which is provided with trunnions61 pivoting it to frame brackets 62 carried by the truck frame. Within this housing the rod carries an external screw thread 63 (Fig. 6). Surrounding this thread and journaled in the housing is a nut 64 which carries worm teeth 65. These teeth mesh with a worm 66 on a shaft alined with and engaging the armature shaft of the motor 67. Accordingly this motor, by rotating the worm-wheel nut, may screw the shaft 52 in one direction or the other, as required, while when the motor is stationary the system is locked and the cradle held accordingly.

To prevent damage to the parts in case the cradle should be brought to a stop in either direction while the motor is still runmng there is provided a slip connection between the worm teeth and the nut. This is accomplished by making these worm teeth on a ring separate from the nut but surrounding it and held to it frictionally. To effect the frictional holding there is provided a ring 70 overlapping the nut and the ring carrying the worm teeth and drawn toward these parts by springs 71 surrounding bolts 72 extending through them. Suitable ballbearings 73 and 74 may take thethrust of the worm wheel nut in either direction. The casing 60 is preferably made separable, as indicated by the removable portion 75, to allow access to the interior. This interior is packed with grease, which is retained in place by the stuffing box 7 6 surrounding the rod 52.

If desired an automatic magnetic brake may be provided on the armature shaft for stoppingits rotation instantly when thecur rent is shut off. Theexterior ofthis brake 1s indicated at 79 in Figs. 3 and 5 and a suitable construction thereof is described in" the patent referred to. 7

Having thus described our invention, what we claim is:

1. The combination of a truck frame having a forward housing and a rear extension, a bracket mounted on said rear extension, a load carrier pivoted to the top of the bracket, said bracket having a depending portion, a toggle joint having its links pivoted respectively to the depending portion of the bracket and to the load carrier at the rear of its pivotal engagement with the bracket, a longitudinal rod connected with the knuckle of the toggle, and motor mechanism mounted in the housing for operating said rod.

2. The combination of a truck frame, a bracket at the rear end thereof, a load carrier pivoted to the top of the bracket, a toggle joint having its links pivoted respectively to a support at the rear end of the frame and to the load carrier at the rear of its pivotal engagement with the bracket, a

1 casing carried by the truck, a longitudinally movable rod extending into said casing and connected with the toggle joint, a motor and gearing carried by said casing for moving said rod longitudinally.

3. The combination of a truck having supporting wheels, a front housing and a rear frame extending from the lower portion of the housing, a bracket secured to the rear frame and extending toward the rear and both upwardly and downwardly, a load its pivotal connection to thebracket, motor mechanism supported within the housing,- and aconnection'between the same and the knuckle of'thetoggle; I

4. The combination of a truck having supporting wheels, a front housing and a;

rear frame extending fromthe'lower por- 5 tion of the housing, a bracket secured to the rear frame and extending upwardly and toward the rear, a loadcarrier pivoted to the upper end of the bracket,'a toggle j ointhaving its links connected respectively with a" lower end portion of the frame and with i the load carrier beyond its pivotal connection to the bracket, motor mechanism within the housing, connecting mechanism between the same and the knuckle of the toggle, and v a bracket carried by'the rear face of the housing for supporting the forward end of the load carrier. I

s 5. The combination with a truck having supporting wheels and a rearwardly extending frame, comprising two longitudinal beams side by side and spaced apart, a

bracket secured to the rear portion of each beam, said bracket extending diagonally upwhen horizontal, a toggle mechanism for,

swinging the load carrier, and motor mechanism within the housing for operating the toggle mechanism. k I

In testimony whereof we hereunto afiix our signatures. r

MORRIS s TOWSON. i

CLYDE E. coonnxn

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