US735399A - Combined truck and hoist. - Google Patents

Description

PATENTED AUG. 4, 1903.

S. E. MITCHELL. COMBINED TRUCK AND HOIST.

APPLIGATION FILED MAY 19, 1902.

2 SHEETS-SHEET 1,

N0 MODEL.

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s. E. MITCHELL. COMBINED TRUCK AND HOIST.

APPLICATION FILED MAY 19, 1902.

2 SHEETS-SHEET 2.

N0 MODEL.

l simple, practical, and inexpensive device ivo. 735,399.

PATENT Iatented August 4, 190%.

OFFICE.

SAMUEL E. MITCHELL, OF CHICAGO, ILLINOIS.

COMBINED TRUCK AND HOIST.

SPECIFICATION forming part of-Letters Patent:No. 735,399, dated August 4, 1903.

Application filed m 19. 1902.

To all whom it may concern;

Be it known that I, SAMUEL E, MITCHELL, a citizen ofthe United States, residing at 'Chicage, in the county of Cook and State ofllli: nois, have invented a certain newiand useful Improvementin a OombinedHoist and Truck, (Case No. 1,) of which the following isla full', clear, concise, and exact description, ,refer' Y ones being had to the accompanying drawings, forminga part of this specification.

My invention relates to a combined hoist andtruck by which heavy packages-such as barrels, boxes, and the like- -can'be readily moved from place to place and elevated from one position or level to another. 1 Such a contrivance is especially useful in loadingofbar rels and boxes into freight-cars,'where it is necessary to move the barrel or box from'th'e,

warehouse or other place to the car andthen elevate it to the level of the car-floor. In the four men are often required to lift the tierce. to the level of the freight-car floor and place I it thereon.

The object of my invention is to producea which will enable one man to move large and heavy packages from vate them as desired. k

In the manner of carrying out my invention herein set forth I provide a truck and elevat place to place and eleing device in the nature of a movable truck comprising a suitable platform for receiving the package mounted on wheels and elevating mechanism by which the package can be lifted bodily from the platform to a higher level and there discharged.

I will point outinthe accompanying drawings more in detail the d evice which I have herein 'set forth.

In the drawings, Figure l is a side elevation of .a device embodying myinvention carrying a tierce which is imposition to be elevated, together with an elevated platform which is to receivethe tierce. Fig.2 is aplan view of the same, and Fig. 3 is a side elevation of a portion of the elevating or hoisting mechanlsm.

In Fig. 1 of the drawings I have shown a combined truck and hoist A, carrying a tierce B, and an elevated platform 0, to which the tierce B is to be elevated and on which it Serial 108,072. (No model.)

is to be placed. It is understood that the elevated platform 0 is merely representative.

' The combined truck and hoist shown is constructed with aplatform 1 for the tierce to be i'eleva ted in' this case a tierce. ,1 has a pair of rails or tracks 2 2, which are cut away at 3 3 so as to form recesses or depressions for holding the package stationary afterit is placed u pon the platform. A swinging inclined approach at is provided in front of the front end of the platform 1, this approach being to allow the tierce to be easily rolled upon the platform. The approach 4.- is

The platform desirably connected pivotally with the platform, so that its forward end can be swung up ,and placed over the platform or against the j'tierce to allow the operator to take hold of the {platform 1.

case of very heavy barrels or tierces three or 1 The platform 1 is mounted upon wheels 5 5 and as a matter of further improvement I desirably support the platform 1 from these wheels in such a way as to allow the platform to belowered to rest upon the ground or plat- .form, whenever desired.

} In the arrangement shown the wheels 5 5 are mounted at the ends of an axle 6, which is bent into substantially U form, with the base portion of the U lying under the platform 1 and pivotally connected therewith. When the axle is in position,with Etlfe sides of the U substantially horizontal, .as shown in dotted lines in Fig. 1, the platform is lifted above the ground; but when the axle is swung so that the sides extend upwardly from below the platform the latter is lowered and rests upon the ground, as shown in Fig. 1. The axle is held in ahorizontal position when placed that way by a reciprocating slide 7, having across piece 8, adapted to engage the axle near the wheels ,when the same is in the position indicated in dotted moved forwardly, so as to draw the ends of the cross-piece 8 out from under the corners of the axle, thereby allowing the platform to drop. The slide can be moved in this way by a rod 9, attached to its forward end and having a handle 10. A coil-spring 11 is arranged on the rod 9 and tends to hold the slide 7 in the rearward position, in which it engages the axle 6.

Uprights or standards 12 12 are mounted on opposite sides of the platform 1 near the rear end thereof, and these support near their upper ends an axle 13, on which is loosely mounted a hoisting device comprising a pair of arms 1414, rigidly secured together. These arms are made with their rear portions-that is, the portions nearest the axle 13-substantially straight and with their forward or lower portions bent or curved into substantially hook shape, as shown in Fig. 1, and when lowered their lower ends lie between the rails 2 2 on the platform 1 and below the upper bases or surfaces of said rails. In this way when the hoisting-arms 14 14 are lowered a tierce when rolled up onto the platform and on the rails 2 2 will come into position over the lower ends of said arms. The axle 13 is also provided with a rigidly-attached gearsector 15, whose teeth mesh with a pinion 16, mounted on a shaft 17, supported in the standards 12 12. The shaft 17 is also provided with a pinion 18 and a ratchet-wheel 19, and above the shaft 17 is a shaft 20, provided with a pinion 21, which meshes with the pinion 18 and a ratchet-wheel 22. The shaft 20 is mounted in one of the standards 12 and also in one of the sides of a metal housing'23, secured to the platform 1 and the said standard 12.

A vertically-swinging hand-lever 24 is pivotally attached to the axle 17, and a link 25 is pivotally attached to the upper axle 20 and provided with a sliding connection 26 with the lever 24. A dog 27, adapted to engage the ratchet-wheel 19, is mounted on the lever 24, and a dog 28 for the ratchet-wheel 22 is mounted on the link 25. The dog 27 is arranged to act to turn the ratchetwheel 19 when the lever 24 is lowered, and the dog 28 is arranged to turn the ratchet-wheel 22 in the opposite direction when the link 25 is raised by an upstroke of the lever 24. In this way it will be seen that when the lever 24 is elevated the dog 28 will turn the ratchet-wheel 22 in the direction indicated by the arrow in Fig. 3 and when the lever 24 is lowered the dog 27 will turn the ratchet-wheel 19 in the direction indicated on said wheel in Fig. 3. The rotative movement of the ratchet 22 will be communicated, by means of the intermeshing gears 21 and'l8, to the shaft 17, and the movement of the ratchet-wheel 19 will di rectly rotate this shaft 17 whereby a continuous movement in the same direction will be imparted to this shaft 17 by the opposite strokes of the hand-lever 24. This continuous rotative movement of the shaft 17 will cause the gear 16 to act upon the sector 15 and gradually turn the same so as to swing the hoisting-arms 14 14 upwardly. The gearsector 15 is of such size as to allow the arms 14 14 to be-swung around until their straightportions pass the level and become inclined I ward end of the lever 31 the forward end of the dog 27 is raised, thereby disengaging the rear end thereof from the ratchet-wheel 19.

A transfer device for transferring the package from the hoisting-arms 14 14 to the platform C is desirably employed, the arrangement shown consisting of a bridge 32, formed of a bent rod having its ends pivotally connected with the standards 12 12. The operation of the device is as follows: If the package to be elevated is to be moved, the axle 6 is arranged so that the wheels 5 5 support the platform 1 at its rear end above the ground. The package is then placed upon the platform 1, as by rolling it up the approach 4 if it is a barrel or cask, the arms 14 14 being previously arranged as shown in Fig. 1. The device is then moved and placed in the position shown in Fig. 1 relatively to the platform to which the package is to be lifted.' The bridge 32 is put across so as to rest on the platform, and the rod 9 is drawn forward so as to release the axle 6 and allow the rear end of the platform to drop. This permits the platform to rest upon the ground and holds the device in a stationary condition; The handle 24 is then operated by moving it up and down, and by this operation the pinion 16 is continuously turned, so as to turn the gear-sector 15, and

thereby cause the arms 14 14 to swing upwardly and ra se the tierce B. When the arms come into position in which their rear straight portions are level,-orsubstantially so, or inclined slightly downward to the rear, the tierce rolls along the straight portion of said arms and onto the bridge 32 and from there onto the platform 0. After the discharge of the package in this way the trip-lever 30 is operated so as to release the hoisting mechanism, whereupon the arms 14 swing downwardly to their original position. 6 is then restored to its original position, elevating the rear end of the platform 1 and placing the device in condition to be moved.

It will be seen that the device is simple, practical, and inexpensive and that it affords a great saving in labor, one man being able to accomplish what otherwise would require two or three men to do.

It will be understood that the invention is capable of being carried out by means other than those herein set forth and that the device herein set forth can be greatly modified and changed without departing from the spirit of my invention.

What I claim as my invention'is- 1. In a device of the class specified, the

combination of a platform provided with sup- The axle.

ports for the package, a pair of swinging arms pivotally supported above the platform and adapted to extend'down to the platform and having bent ends adapted to come into position below the upper surfaces of said supports, and means for swinging the arms about their points of pivotal support, substantially as described.

2. The combination with a platform having rails for the package, of a pair of hoistingarms having curved or hooked ends adapted to be placed in position below the tops of the rails, a shaft upon which said arms are mounted, and means for turning said shaft so as to cause the arms to swing and elevate the package, substantially as described.

3. The combination with the platform hav- 1 ing rails for the package, a pair of hoistingarms 14, 14, having curved or hooked ends, a rotary shaft upon which said arms are mounted, said shaft being elevated and the arms being so mounted that their hooked or curved ends can be placed in position below the package when the same is mounted upon the rails, a gear-sector 15 carried by said rotary shaft, and gearing meshing with said sector 15 to turn the same and thereby swing the . arms 14, 14, substantially as described.

4. The combination with the platform 1 hav ing rails 2 2, with recessed portions 3, 3, of standards 12, 12, supporting a rotary shaft 13, arms 14, 14, having curved ends mounted on i said shaft and adapted to have their curved ends in position below the package when the same rests upon the rolls 2, 2, a gear-sector 15 rigidly secured to the shaft 13, a pinion 16 meshing with the sector 15 and carried by a shaft 17, and a ratchet mechanism for rotating the shaft 17, substantially as described.

5. The combination with the gear-sector 15,

a of a pinion 16 meshing therewith and carried by a shaft 17 a pinion 18 and a ratchet-wheel "19 carried by the shaft 17 a second shaft 20 carrying the pinion 2]. meshing with the pinion 18 and a second ratchet-wheel 22, a pivoted lever 24 carrying a dog 27 adapted to engage the ratchet 19, and a link 25 having a sliding connection with the lever 24 and carrying a dog 28 for the ratchet-wheel 22, substantially as described.

6. The combination with a rotary shaft carrying hoisting- arms 14, 14, and a gear-sector 15, of a double-ratchet mechanism comprising two gear-connected ratchet-wheels having dogs adapted to actuate them in opposite directions, and means for actuating said dogs alternately to turn the ratchet-wheels, as set set forth.

7. The combination with a rotary shaft carrying hoisting- arms 14, 14, and a gear-sector 15, of a double-ratchet mechanism comprising two gear-connected ratchet-wheels having dogs adapted to actuate them in opposite directions, a pivoted lever, and a link having asliding connection therewith, said dogs being mounted on said lever and said link, substantially as described.

8. The combination of a pair of hoistingarms 14, 14, having curved ends, means for supporting said arms above their curved ends, and means for swinging the same, the arms being adapted to swing slightly beyond the horizontal, whereby the package can be rolled off from them, substantially as described.

9. The combination with means for supporting the package at difierent points, of curved arms adapted to be placed in position below said points of support, and means for suspending the arms with their curved ends downward. p

10. The combination with the platform 1, of an axle 6 bent into U form and pivotally connected with the platform, and a slide 7 carryinga cross-piece 8 having its ends adapted to engage the end portions of the axle.

11. The combination with the platform, 1, of an axle 6 bent into U form and pivotally connected with the platform, a slide 7 carrying a cross-piece 8 having its ends adapted to engage the end portions of the axle, and spring means for holding the slide 7 in position to engage the axle, substantially as de- SAMUEL E. MITCHELL.

Witnesses:

A. MILLER BELFIELD, I. 0. LEE.

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