US1273747A - Hoist-gearing. - Google Patents

Description

J. DAVIDOFF.

HOISI GEARING.

APPLICATION man. on. IS. m1.

Patented July 23, 1918.-

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UNITED STATES v JOSEPH navnborr, or B'BooKLYmNEw YORK;

p 7 noIsT-GEABINd' 7 Specificationof was Patent.

1 Application filed October 15, 1917. Serial No. 196,692.

To all whom it may concern:

Be it known that I, JOSEPH DAVIDOFF, a

citizen of the United States, and a resident of the city of New York,borougl1 of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Hoist- Gearing, of which the following is a full, clear, and exact description. i

The object of the invention is to provide a new andimproved portable hoisting machine more especiallydesignedfor use on dwellings and like structures for hoisting ash cans and other loaded receptaclesout of a cellar onto the sidewalk and to return the empty receptacles to the cellar. Another object is to permit of conveniently removing the hoisting machine after use to be out of the way of the passing pedestrians.

In order to accomplish the desired result use is made of a frame, a hollow shaft journaled in the said frame, manually controlled. means for turning the said hollow shaft, a hoisting drum mounted to rotate loosely on the said hollow shaft and provided with an internal gear wheel,-'a single and a double gear wheel mounted on the said frame and in mesh with the said internal gear wheel, a pinion slidable on the said hollow shaft and turning therewith, and manually controlled shifting means connected with the said pinion to shift thesame lengthwise on the said hollow shaft into engagement with either of the said 'singlegear wheels or the double gear wheel.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which'similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the hoisting machine;

Fig. 2 is a plan view of the same;

Fig. 3 is an enlarged sectional side elevation of the same on the line 33 of Fig. 4; and

Fig. 4 is an inverted sectional plan view of the same on the line 4-4 of Fig. 3. i

The frame 10 of the hoisting. machine is adapted to be mounted to swing on a bracket 11 by the use of a pivot pin 12 held removably on the bracket 11. The bracket llis bolted or otherwise secured to the side of a house or other support 13 at a point above the opening in'the sidewalk leading to a cel-. lar. On the frame 10 is journaled a hollow PATENT OFFICE, i

. Patented any 23, 1918-41 shaft 14 on which is mounted to turn loosely a hoisting drum 15 providedwith the usual peripheralgroove 16 engaged by a'hoisting rope17 for hoisting a filled receptacle-from the cellar to' the sidewalk or lowering an empty receptacle from thesidewalk into the cellar, as hereinafter more fully explained.

The drum 15 is provided with two'flanges 18 and 19, of which-"the vflange 19 is pro vided with an outwardly-extending'rim 20. provided 01111381111161 facewith an internal gear; wheel 21' inmesh with two gear :wheels' 22 and=23, of which-the gearwheel 22 rotates loosely on a stud 24 secured to the frame 10. The other gear wheel 23fforms part-of another gear wheel 25 of largerdiameter thus providinga double gear =wheel 'mounted to 7 turn'loosely on'a stud 26attached. to the frame 10. The gear wheel 25 extends'out side offthe rim-2O and isthus out of the plane of the other gear wheel 22, andeithers' gear wheel 25 or 22 is adapted to-be engaged by a pinion 30 mounted to turn with andto slide lengthwise on the hollow shaft14.-v For this purpose use is made of a key andkeyway 31 (see Fig.3), anduse is alsomade of a cotter pin 32. held onthe pinion Y30 and extending through a longitudinal. slot 33' formed in the hollow shaft 14wThe cotter pin 32 extends into an opening formed in a shiftingrod 35 mounted" to slidealengthwisez,

within the hollow shaftxl4. .The -re'ar,- end of the shifting shaft 35rextends beyondthe rear end of-the hollow shaft 14'and' on' this rear end of the shifting shaft 35 is'arranged a shifting collar 40 engagedby one end of-a shifting. lever 41 fulcrurned at 42;:01

bracket 43 secured to or forming part of.

the: frame 10. A handle 44 :is connected with the shifting lever-41 and ismounted to a slide in an open bearing 45 attached to the I frame 10.- The handle 44-is providedwith two notches 46 and 47- adapted to. drop into face with spaced apertures 51 adapted-to be engaged by'a. spring-pressed tapering pin 52 mountedto slide in a crank arm- 53 having its hub 54partly divided and mount-ed to turn looselyon the hollow-.fshaft 14 as the v fulcrum. The spring pressed pin 52 is pro-.

vided with a' handle55 adapted to be taken hold. of by the user to slide the spring pressed pin 52 outwardjout ofengagement with the corresponding aperture 51 and to then engage the handle 55 with an angular notch 56 formed in the crank arm 53 to hold the pin 52 in withdrawn position when it is desired to let the drum 15 run loosely for lowering a load. Normally, however, the Pin 52 is in engagement with an aperture 51 of the wheel 50 and when the crank arm 53 is turned in the direction of the arrow 00, shown in Fig. 1, then a rotary motion is given to the ratchet wheel. 50 and to the hollowv shaft 14, the shaft 35 and the pinion 30. The hub 54 of. the crank arm 53 is held inposition, on. the hollow shaft 14 by a cap nut 57 screwing on the forward end of the hollow. shaft 14.

On moving the handle, 44 forwardly a rearward sliding movement is given to the shifting, shaft-35., whereby the pinion30 is. movedintoengagement withthe gear wheel 25, and'when-the crank arm 53is now turned a rotary motion is transmitted to the double gear wheel 25-, 23, and as the. latter is in mesh with the internal gearwheel 21- it is evident that thedrum 15 is rotated in the. direction of, t-he arrow y to wind up on end of therope117 witha View to raisingv the ash "can or other heavy' load out of the cellar up ontothe sidewalk. In case a light load is to beraised then the handle 44 is shifted; farther forwarda tomove the pinion 30 out of mesh with the gear wheel 25 and into mesh with the gear wheel 22, and whenthe crank arm53is now turned in the direction of the arrow 00 then arotary motion is given tothe drumat. ahigher rate of speed and likewise in the direction of'the arrow y to raise a lighter load.

When the pinion 30 is. in mesh with the gear wheel 25 and it is desired to disconnect said: pinion from the gear wheel 25 with a view-to allow the drum 15 to rotate loosely then thehandle 44 is moved rearwardly a short distance to move the pinion 30 for-- wardly into a recess 60formed in the frame 10. When the pinion 30 is, however, in mesh with the gear wheel 22, as previously explained, and it is desired to allow the drum 15 to rotate loosely for lowering an empty can then a further forward movement is given to the handle 44 to move the pinion 30 rearwardly into a recess 61 formed in the front face of the drum 15 (see Fig. By this arrangement it is not necessary to shift the pinion 30a long distance when it is desired to, move it outof engagement with either gear wheel 25- or the gear wheel 22 to allow the drum to'rot-ate loosely for lowering an empty receptacle into the cellar.

In order to prevent too fast unwinding of the rope 1T whenlowering the empty receptacle into the cellar, use is made of a brake band, e-Xtending around the rim 20 and secured at one end by screws 71 or other fastening-means-tothe frame 10 (see Figs.

'whiclrextends a brake lever 73 fulcrumed at its rear end at 74 to the f mile 10. The forward end of the lever 73 extends within the path of the crank arm 53 so that when the latter is turned in the direction of the arrow :0 it lifts the: brake lever 73, then passes the same and allows it to return to normal position. When, however, the crank arm 53 is swung in the inverse direction of the arrow 00 then it bears down on the brake lever 73 to draw the brake band 70 tight on the rim 20-thus braking the hoisting drum 15. When the crank arm 53 bears on the brake lever-73 the operator can retract the pin 52 relative to the wheel 50 to allow the drum 15 to run loosely on the hollow shaft 14 when lowering anempty receptacle into the cellar, the speed.- of the drum being con-- trolled by. the brake band. V

In order to permit easy and safe shifting of theshaft 35 and pinion .30, as above de scribed, the operator swings the crank arm in the direction of they arrow 1 to bear. down on the brake lever 73 and; thus apply the brake band 70 on.the rim 20 thereby slightly is suspended-on theropel'l', as the drum 15. is held againstturning by.the brake mechanism controlled by the crank arm After the hoisting of the-filled receptacle and the lowering-of theempty receptacle is. accomplished, the user withdraws the pivot pin 12 from the bracket; 11 and the frame 10 to allow removal of the hoisting machine. and storing'thereof: until it is. desired to again use the same at a future time. It will be noticed that by the arrangement described. the hoistingmachine is portableaml can be readilyplaccd in position o for, use er-.- re-. moved .to be completely out of the way of the pedestrians passing along the sidewalls From the foregoing it will he soon that the operator by having hold: of: the crank arm 53 canturn the-hoisting drum 1 3, for hoisting a light or a heavy load from the cellar to the sidewalk, and the crank arm 53 also s rves to .controlthe brake mechanism to allow of checkingthe speed of the drain 15 when lowering-an empty can or receptacle from the sidewalk to thecellar.

Having thus described my invention, 1 claim new and desire to secure by. Letters Patent 1.. A hoisting machine, comprising a frame, a hollowshaft journaleclon the said shaft and the pinion-30 even when a load."

frame,- manually controlled turning means for turning the said shaft, a hoistingdrum mounted to rotate loosely on the said hollow shaft and provided with an internal gear wheel, a single and" a double gear wheel mounted on the said frame and in mesh with the said internal gear wheel, a pinion slidable on the said hollow shaft and turning therewith, and manually controlled shifting means connected with the said pinion to shift the same lengthwise on the said hole low shaft into engagement with either the said single gear wheel or the double gear wheel.

2. A hoisting machine, comprising a frame, a hollow shaft journaled on the said fran'ie, manually controlled turning means for turning the said hollow shaft, a hoisting drum mounted to rotate loosely on the said hollow shaft and provided with an internal gear wheel, a single and a double gear wheel mounted on the said frame and in mesh with the said internal gear wheel, a pinion slidable on the said hollow shaft and turning therewith, a shifting shaft slidable in the said hollow shaft, a pin connecting the said pinion with the said shifting shaft, and a shifting lever fulcrumed on the said frame and pivotally connected with the said shifting shaft.

3. A hoisting machine, comprising a frame, a hollow shaft journaled on the said frame, manually controlled turning means for turning the said shaft, a hoisting drum mounted to rotate loosely on the said hollow shaft and provided with an internal gear wheel, a single and a double gear wheel mounted on the said frame and in mesh with the said internal gear wheel, a pinion slidable on the said hollow shaft and turning therewith, a shifting shaft slidable in the said hollow shaft, a pin connecting the said pinion with the said shifting shaft, and a shifting lever fulcrumed on the said frame and pivotally connected with the said shifting shaft to shift the latter and with it the pinion to engage the said pinion with either the said single gear wheel or the double gear wheel, the said hollow shaft having a slot through which extends the said pin.

4. A hoisting machine, comprising a frame, a hollow shaft journaled on the said frame, manually controlled turning means for turning the said hollow shaft, a hoisting drum mounted to rotate loosely on the said hollow shaft and provided with an internal gear wheel, a single and a double gear wheel mounted on the said frame and in mesh with the said internal gear wheel, a pinion slidable on the said hollow shaft and turning therewith, manually controlled shifting means connected with the said pinion to shift the same lengthwise on the said h0llow shaft into engagement with either the the said frame, and a brake lever'fulcrumed,

on the said frame and e'ngagingfthe free end of the said brake band, the said brake lever being controlled by the said turning means.

5. A hoisting machine, comprising a frame provided with a recess, a hollow drum shaft journaled'in the said frame and extending centrally through the said recess, the said hollow shaft having a slot, a-hoistingdrum mounted to turn loosely on the said hollow shaft and provided with an internal gear Wheel and with a recess through which extends centrally the said hollow shaft, a single gear wheel in mesh with the said internal gear wheel, a double gear wheel of which one is smaller than the other, the smaller gear wheel being in mesh with the said internal gear wheel, a pin mounted to slide on and to turn with the said hollow shaft and adapted to engage either of the said recesses or the said single gear wheel or the larger gear Wheel of the double gear wheel, a shifting shaft slidable in the said hollow drum shaft, a pin connecting the said pinionwith the said shifting shaft, the pin extending through the slot in the said recess, and means connected with the said shifting shaft to shift the latter lengthwise in the said hollow shaft.

6. A hoisting machine, comprising a frame provided with a recess, a drum shaft journaled in the said frame, a drum mounted to rotate loosely on the said drum shaft and provided with an internal gear wheel and with a central recess, the said drum shaft extending centrally through both recesses, a single gear wheel mounted on the frame and in mesh with the said internal gear wheel, a double gear wheel mounted on the'frame and having a small and a large gear wheel of which the, small gear wheel is in mesh with the said internal gear wheel, a pinion mounted to turn With and to slide on the said drum shaft and adapted to engage either of the said recesses, or the said single gear wheel or the large gear wheel of the double gear wheel, means for rotating the said drum shaft, and means for shifting the said pinion.

7. A hoisting machine, comprising a hoisting drum, a brake for the same and having a brake lever, a gearing for turning the said drum, and a pin and wheel mechanism having a demountablecrank arm and connected with the said gearing, the said brake lever extending into the path of the said crank arm.

8. A hoisting machine, comprising a drum, a brake mechanism for the said drum, a gearing for rotating the said drum and having a shiftable member, means for shifting for turning the' said shiftable member and adapted to engage the said brake mechanism to apply the same-for holding the drum against rotation While shifting :the said shiftable member.

9. A holstlng machine, comprising a drum provided With an internal gear Wheel, a

gear Wheel in mesh with the said internal gear Wheel a plmon adapted to be moved in mesh With the said gear Wheel, a crank 10 by the said crank arm to lock the drum in 15 place while shifting the said pinion.

JOSEPH DAVIDOFF.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

7 Washington, DJG.

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