US752363A - Portable traction-crane - Google Patents

Description

PATENTED FEB! Le, 1904-. P. E. SMITH. Y PORTABLE 'TRAGTIo-N CRANE.

APPLICATION FILED' we. 1s, 190e'.

No MODEL.

SHEETS-snm' 1.

wmv..

ATTORNEY Tm: Munras Parties cq. WQ'Yum'HaDWASHMBmN. D, L.;

No; 762,363. PATENTBD FEBg-ls, 1904.v

P. B SMITH.

PORTABLE TRAGTION CRANE.

. APPLICATION FILED AUG-[13, 1903.

N0 MODEL. 3 SHEETS-SHEET 2.

mais.

"wn'Nassr-:s @am I @06 mf l I NvaN-ron .@Mf Ma' eYn/Afwwf ATTGRNEY No. 752,363. I "PATENTED IElm, 1904.

F. E. SMITH.

APORTABLE TRAGTION CRANE.

APPLIUATIONAFILED AUG, 13, 1903.

N0 MODEL. 3 SHEETS-SHEET 3.

wc nanars .rxRs co. mom-urna.. wnsmumum u c..

.UNTTED STATES Patented February 16, 1904.

PATENT A OFFICE.

FREDERIC E. SMITH, OF FRANKLIN, PENNSYLVANIA. i

PORTABLE TRACTlON-CRAN E.

'SPECIFICATION forming part of Letters Patent No. 752,363, dated February 16, 1904.

Application filed August 13, 1903.

T0 a/ZZ whom, t may concern:

Be it known that I, FREDERIC E. SMITH, a citizen of the United States, residing at Franklin, in the county of Venango and State of Pennsylvania, have invented certain new and useful Improvements in Portable Traction- Cranes, of which the following is a specification, reference being had therein to the accompanying drawings. Y

My invention relates to an improved port-V able traction-crane and will be fully understood by a reference to the accompanying drawings, which Vform a part of this speciiication, and in whichV Figure 1 isV a rear elevation of said crane. Fig. 2 is a side elevation. 'Fig 3 is a side view of the hoisting and traction gearing, the bed being shown in section on line .fr of Fig. 5 and with the standards removed for 'the purpose of showing said gearing more'clearly. Fig. 4 is a front elevation ofthe hoisting and traction gearing stripped of its housingor surrounding framework. The steering-wheel and shaft at the rightside of saidview are removed to expose other parts to view. Fig. 5

is a plan view of the bed. Fig. 6 is a view of the under side of the bed. t

The same reference characters indicate identical parts in the several views.

The object of my invention is to provide a portable crane wherein the hoisting andtraction mechanism shall be operated by a motor of the internal-combustion type, said motor to be so adapted that either the hoisting or traction gear may be thrown into engagement with and operated thereby or both may be disengaged therefrom and remain stationary while the motor is operated, and as a precautionar;r or safety provision the engaging and djsengaging mechanism of the hoisting and traction gearing are so connected that both the hoisting and traction gearing cannot become operative at the same time.

In general terms my device consists of a platform or bed having traction-gearing mounted therein and jib-standards mounted upon said bed, with hoisting mechanism mounted therein, all of which gearing is operated or actuated by one motor. Y

This general description will be seen to be Serial No. 169,321. (No model.)

equally applicable to the device shown and detially as follows: In the rear end of bed 1 are mounted' the traction-wheels 2 upon the axle 3, and in the front end of said bed in the extremity of the bifurcations are mounted the steering-Wheels 4. Extending upwardly from said bed are two jib-standards 5 and 5', which at their lower end are extended rearward, forming brackets 6, upon which is mounted an internal-combustion motor v7. A drum Sis mounted between said standards 5 5', upon y ,I

which the hoisting-cable 9 is wound.

Upon the motor-shaft is mounted a bevel-v gear4 10, and meshing therewith and diametrical'ly vertically opposed to each other are the ,two bevel-gears 11 12, revolubly mounted upon the vertical shaft 13. Thus mounted it will be readily understood that gears 11 and 12 revolve in opposite directions.

Upon the juxtaposed faces lof gears 11 12 are formed clutch-teeth 14, adapted to be engaged by the teeth upon clutch 15, which'clutch 15 is slidingly (but not revolubly) mounted upon shaft 13. When clutch 15 is disengaged from the clutch-teeth 14 of gears 11 12, shaft 13 does not revolve, and when clutch l5 is in engagement with either gear 11 12 shaft 13 is caused to revolve, and by shifting the engagement of said clutch 15 from one gear 11 12 to the other the motion of said shaft 13 is reversed.

' Revolubly mounted upon the lower end of shaft 13 is a pinion 16, having clutch-teeth 17 upon the upper face thereof. Slidingly mounted above said pinion 16 is a clutch 18, adapted to be engaged with and disengaged from the teeth upon pinion 16.

Mounted upon the under side of bed 1 is a I gear 19, adapted to mesh with and be driven IOO by pinion 16. Rigidly aliixed to the under side of gear 19 is a bevel-pinion 20,which is adapted to mesh with and drive a bevel-gear 21, rigidly mounted upon axle 3, and whereby motion is transmitted to the traction-wheels 2.

To the hoisting-drum 8 is rigidly afixed a worm-gear 22, adapted to mesh with and be driven by worm 23, which is revolubly mounted upon shaft 24.

Upon the lower end of worm 23 are formed clutch-teeth adapted to be engaged by the teeth upon the clutch 25,` which is slidingly mounted upon shaft 24.

26, 27, 28, and 29 are transmitting-gear ing whereby motion is transmitted from shaft 13 to shaft 24.

A lever 30is the means by which clutches 18 and 25 are operated, the lever 30 being attached to lever 31 by means of the connecting-rod 32, (which is broken away in Fig. 3 in order to expose other parts to view.)

Lever 31 is a compound lever fulcrumed at d, with a joint at a', which construction is employed for the purpose of causing clutches 18 and 25 to travel in the same direction simultaneously or so that when one clutch is caused to engage the other is simultaneously caused to disengage from its work. This construction is a precautionary measure and is employed for the sake of safety, for if while raising a heavy load upon the hoisting-tackleA the traction mechanism should become operative and the crane thus made to travel in either direction damage and accidents might result.

For the purpose of operating clutch 15 a lever 33 is provided and is connected to the clutch-fork 34 by means of the connectingrod 35.

Motor 7 is an internal-combustion motor of any suitable type, vpreferably employing naphtha as fuel.

36 is a fuel-tank.

37 is a carbureter.

38 is a water-tank and is connected to the jacket of the cylinder of the motor for cooling purposes.

A steering-wheel 4 is pivotally mounted in the extremity of each of the bifurcations of the bed 1, (as will be readily understood from an inspection of Fig. 6,).and the housing or bracket of said wheel 4 is provided with a sprocket-wheel 39, about which passes a chain 40, passing back and about an actuatingsprocket 41', which said sprocket 41 is driven by the worm 42 and gear 43.

- W'orm 42 is mounted upon shaft 44, which has rigidly mounted thereon a miter-gear 45, to which gear 45 and its shaft 44 motion is imparted by the gear 46, mounted upon the shaft 47 of the steering-wheel 48.

It will be readily seen that the operatinglevers and steering-gear are readily accessible from the platform 49, upon which the operator stands. L

Having thus described my device, what I claim as new, and desire to secure by Letters l Patent, is-

1. In a portable traction-crane, a bed of general Y-shaped conformation, steering-wheels mounted in each of the bifurcations thereof,

" and means of actuating said steeringwheels from the operators platform.

2.` In a portable traction-crane. a bed, traction mechanism mounted thereon, vertical jib.

standards mounted upon said bed, hoisting mechanism mounted upon said standards, a motor mounted upon said standards, a bevelgear mounted upon the shaft of said motor, meshing with and adapted to drive two diametrically opposed bevel gears, revolubly mounted upon a shaft which communicates with the hoisting and traction mechanism, and means of placing said shaft into operable engagement with either of said last-mentioned gears, substantially as and for the purpose set forth. l

3. In a portable traction-crane a bed of general Y-shaped conformation, traction-Wheels mounted beneath the body of said bed, a steering-wheel mounted in the extremity of each of the bifurcations; j ib-standards mounted upon said bed, hoisting mechanism mounted upon said standards, in combination with a motor adapted to operate said traction and hoisting mechanism.

In testimony whereof I ax my signature in presence of two witnesses.

VFREDERIC E. sMiTH.

Witnesses:

E111). SMITH, J. F. HUNT.

Images