US1414426A - Dump hoist - Google Patents

Description

C. LOSCH.

'DUMP HOIST.

APPLICATION FILED SEPT. 13, 19.20.

1,4 4,4 Patented May 2,1922.

a SHEER-SHEET '1.

c. LOSCH.

DUMP HOIST.

APPLICATION FILED SEPT. 3, 1920.

Patented May 2 1922.

3 SHEETS-SHEET 2.

CQ-LOSCH.

DUMP HOIST. APPLICATION FILED SEPT. 13, 1920.

Patented May 2, 1922.

3 SHEETSS HEET 3.

".B e it known that I, CYnENIUs its normal position].

1T0 all whom z't mai concern. i

to speedily restore GYRENIUS LoscH, orsonnrnmnn HA EN, PEN SYLVANIA.

Dem Hors'n,

' LosoH, a citizen of the United States, residing at Schuylkill Haven, in the county of Schuylkill and State of Pennsylvania, have in- ,vented a new and useful Dump Holst, of which the following is a specificatlon.

This invention provides means for raising the forward end of a' motor' truckibody to any desired degree within its limit of action, for the purpose of unloading, and

or lower said body to The object of theinvention'is provide a hoist of this character which is simple, in construction, reliable in operation, cheap to manufacture, and readily a pli b totally, of the motor trucksnow in use, 1

With these'ends' ;in]view the invention residesin the combination-and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in'th'e precise embodiment of the inv'e'ntionshown can be made without departing from the spirit of the invention. In the accompanying drawings the preferred form of the invention has been shown.

In said drawings v a Figure l is a side elevation of a sl ding geartransmission, of known 1nake,'and hence needing no. particular description, showing the manner of connection therewith for the purpose of securing-tl1e power to operate thehoistl a i igure 2 is a sideyiewofthe hoist with some parts shown section and some in elevation.

Figure 3 is a partial transverse view showing the operative relation and connections between certain of the parts. V

Figure 4 isan enlarged section on line 4-4, Figure 3.

Figure 5 is an enlarged section on line 5-5, Figure 3.

Referring to the figures by characters of reference 1 designates the transmission gear casing, which for the purpose of the present invention has a small portion thereof, re moved forming an aperture 2 so as to allow engagement and disengagement of the gear 3 mounted exterior to the main casing with one of the transmission gears, and pref-.

Specification of LettersPatentr Application filed. September 13,1920. seriainaeoaesa.

I Patented UNITED STATES: PAT NT; F CE-"f Maya; 1922 r i sleeve 5 and is adapted to move end'wise with respect-to its supporting shaft 6 This gear is "normally. held out -ofsengagement with .7

the reversingpinion'l by a coiled spring 7.

An enclosing casing, not shown, provided with bearings. 8 and? for supporting the sha'ft6, is secured to themaijn, transmission casing 1 in any approved; manner, protecting the gears against vdust and dirt, and pr'eventing the escape 'of lubricant through the aperture 2. The short shaft 6 carries a sprocket wheel-10 located; in the rearfof bearing 9, and connected by chain'l4 "with anothersprocket wheel 11 secured'to a shaft 12. This shaft has a pinion 13 and is journaled in a bracket 15 mounted upon the side member 16 of the main frame '1 of the-truck.

' The rear bracket 17 is provided with "a bean mg 18 in alignment with bearing 19 the front"'bracket 15, and these bearings carry a shaft 2O upon which the internal gear 21 and winding drum" 22 arefmounted. Thedrunr 22 and internal gear 21 areshown as one piece, but each may bes eparate and both secured together in any approved man-' nor so that the rotation of the internal gear also rotates the drum. The completed struc-' ture may turn on the shaft 20, orfit-ma'y be rigidly secured tothe shaft, and'the shaft i ,rotate in the bracketbearings 18 and 1 9,

desired, the pinion 13 being in. mesh with internal gear 21'for thepiirpose of driving the latte r. -A brake" band 23; encirclingthe internal gear 2 1 is proi' idecl "foi" cliecking or f c W1 ever desired. Oneend of thebrake band 23is holding the] drum ,22 in any p'ositi secured to the mainframe 16 'and thel' other end is carried. through an aperture in the main frame and connected with a suitable 7 operating lever convenient to the 'operator, not shown.

action.

The squared shaft 2(icarries a casting brl support 27 near its center'upon which a sheave 28 is mounted to guide a chain or cable 29, and another sheave 30, serving a similar purpose, is mounted upon a shaft or The derrick portion of the hoist is mounted I I bolt 31 at the apex or upper end of the derrick 32. This upperend is shaped like an inverted U and provides a very appropriate housing'between its sides for the sheave 30. Below the housing just men tioned the derrick 32 spreads outward in the form of an inverted V, the lower ends being secured by rivets or bolts 33 to castings3 l supported by the squared shaft 26 in close proximity to, thebearings 24. 'This con- 'struotion gives strength and rigidity combined with lightness, andtdistributes the strain of the load to be hoisted, to several points, all of which are very desirable features in structures of this nature. I

One end of the chain or cable 29 is secured to the drum'22, and the other end to the front end of the body B of'the' truck,

the rear end of the body being hinged to the main frame as is customary and as shown at In hoisting the forward end of a body thus secured, it describes an arc with a tendency to recede or move away from the vsheave 30, in proportion to the height to which the body is raised. The swinging derrick, however,vcompensates for this re ceding action and entirely eliminates the consequent angular pull of the cable as the body approachesits upper limit, and the forward swing of the lower extremity of the bottom sheave wheel 28 advances the cable leading to the drum 22 as the winding of 'the cable progresses, thereby preventing the cable from over-riding on the drum, as well 35 as maintaining, proper alignment of the cable over and between the sheaves 28 and 30.

To operate the hoist, the gear shift lever V 35 is placed in neutral position so as to disl manner.

connect the engine from the truck driving mechanism. The clutch is then engaged by actuating the clutch pedal 36 in the usual This rotates the countershaft37 of the transmission and the reversing pinion 4.

The gear 3 will be thrown into engagement with the reversing pinion 4: against the tenr sion of the coiled spring 7 by proper manipula'tionof the engaging lever 38. This completes the coupling, and 1 the ;;engine then raises the front end of the body byits own power. Then the body is raised to the desired height the brake band 23 is tightened and pressure on the engaging lever 38 is re leased, allowing the coil spring 7 to auto matically kick gear 3 out of mesh with the reversing pinion 4 and maintaining it in this position until another application is re quired. The body may be dropped whenever desired by simply ea-sing up the brake band 23', allowing it to returnjtoits normal position through no other powerxthan its own weight. From the is novel, light and inexpensive, calculated foregoing it v will be observed that I have produced a power hoist which to'effect the accomplishment of the several parting fromthe scope of the protection 5 wardly extending derrick mounted to swing toward and from the body, of a drum supportedbeyondoneside of the truck body, a flexible connection between the drumand one end of the body, an'internal gear revoluble with the drum, a gear meshing therewith, a spring restrained shiftable gear, means for transmitting motion from said shiftable gear to the gear engaging the internal gear, and means under the control of the driver for moving the shiftable gear into 7 7 vi mesh with a gear ofrthe transmission, 7'

In testimony that I claim the foregoing as my own, I have hereto aflixed my signatur in the presence of two witnesses.

W'itnesses: I G. I. BENSINGER, EVA J. BENSINGER.

CYRENIUS LQSOHQ

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