US2026350A - Hoisting apparatus - Google Patents

Description

31, 1935. w. LOOSCHEN 2,026,350

HOISTING APPARATUS Original Filed Jan. 21, 1951 IIIIII H II N III I[ ATTORNEYS Patented Dec. 31, 1935 UNITED STATES PATENT OFFICE HOISTING APPARATUS John W. Looschen, Paterson, N. J.

Application January 21, 1931, Serial No. 510,139 Renewed June 5, 1935 3 Claims.

a plurality of connections.

Another object is to provide a hand operated means for simultaneously actuating a plurality of suspending connections and for controlling the movement of the connections.

Another object is to provide means for rotating an element having secured thereto one end of each of the flexible connections spaced apart, which connections are adapted to be wound thereon for lifting a load suspended therefrom.

Another object is to provide certain improvements in the form, construction and arrangement of the several parts whereby the above named and other objects may effectively be attained.

A practical embodiment of my invention is represented in the accompanying drawing, in which Fig. 1 represents a detail side elevation of my improved hoisting apparatus, and the support therefor;

Fig. 2 represents a detail plan view on an enlarged scale of the actuating means removed from its support;

Fig. 3 represents a front elevation of the same, partly in section; and

Fig. 4 represents a side elevation of the same.

The apparatus is especially designed for use in connection with the raising and lowering of boats, canoes, or the like, in boat-houses or sheds so as to prevent the accumulation of marine growth and incipient rot, while idle, as well as damage to the craft due to banging and chafing against the dock, change of tides and storms.

The apparatus includes a rotatable element I, in the present instance, in the form of a hollow shaft suspended horizontally from a roof beam 2 or other support of the boat-house (not shown) by means of eye bolts 3, 4, and one end of the rotating element I is journaled in a hanger 5 also secured to the roof beam 2 by bolts 6. A plurality of flexible connections 1 are carried by the element I, and eachconnection has one end secured to the element by a clamp 8, while the other end 9 is provided with devices, such as hooks, slings or similar means for receiving or carrying the load to be lifted. The element I is rotated by means of a hand lever I8 having a head II formed with arms I2, I3 which are journaled on one end of a shaft I4 mounted to rotate in a bearing I5 in thehanger 5. A ratchet wheel I6 is keyed to the shaft I4 between the arms I2, I3, and a spring actuated'plunger I1 is mounted in the head II in position to engage the teeth of the ratchet wheel I8. This plunger I1 may be withdrawn from its engagement with the teeth of the ratchet wheel, when desired, by means of a latch I8 pivoted at I9 on the hand lever I0 and having a link 20, which is connected to the plunger I1 by a pin 2I, which is arranged to move in a longitudinal slot 22 in the head II of the hand lever. ratchet wheel I6 against movement in one direction, I provide a pawl 23, mounted to rock on a stud 24, fixed on the hanger 5, and a spring 25, one end of which engages the hanger, while the other end coacts with the pawl 23 to hold 10 it in engagement with the teeth on the ratchet wheel I8. This pawl 23 is moved out of contact with the teeth of the ratchet wheel by means of a rock lever 21 mounted on. a stud 2B fixed in the hanger 5, the short arm 28 of which lever 15 The shaft I4 is also provided witha friction 2o device in the form of a wheel 32 which is keyed to the shaft and a band 33 which surrounds the wheel so that one end 34 may be fixed to a lug 35 on the hanger 5, while the other end 38 is adjustably secured to the short arm 28 of the lever 25 21. The end 36 of the band is adjustably secured to the short arm by means of a pin 31 which is arranged to pass through an elongated slot 38 in the lug 35 and project through a hole 39 in the short arm 28. The upper end of this 0 pin 31 is screw threaded and arranged to receive nuts 48, M for adjusting the frictional contact of the band 33 and wheel 32 with respect to the movement of the shortarm 28 of the lever 21.

Motion is transmitted from the shaft I4 to the 35 rotating element I by means of a pinion 42 fixed to the shaft I4 by a pin 43 and meshing with a gear 44 pinned at 45 to the rotating element I. g

In order to raise the load or wind the flexible connection on the rotatable element I, the hand 40 lever II) is moved arcuately from the right to the left, as indicated by the arrow marked A. This movement of the lever will cause the plunger I1 to engage the teeth on the ratchet wheel I8 and rotate it, thereby rotating the shaft I 4, wheel 45 32 and pinion 42, which in turn meshes with the gear 44 and actuates the element I. As the ele-. ment I is rotated each of the flexible connections 1, by reason of having one end fixed to the rotating element, will be caused to be wound 50 thereon and raise the load. When the hand lever is moved to the limit of its movement to the left, the pawl 23 will automatically engage the teeth on the ratchet wheel I6 and hold the load, so that the hand lever may be returned to its normal 55 position or to the right. In this movement of the hand lever to the right, the plunger I1 will slip idly' over the teeth until its direction of travel is reversed, whereupon the movement of the parts will be repeated as previously described. 60 7,

As a means of locking the 5 When it is desired to lower the load, the hand lever I is moved to the position shown in dotted outline in Fig. 3, where the plunger I! will engage the teeth on the ratchet wheel I6 and, by a slight movement of the hand lever, the ratchet wheel may be moved sufficiently clockwise so that the pawl 23 can be readily removed from the teeth of the ratchet wheel by a downward movement of the rope 3| on the long arm 30 of the lever 2'1. The rocking movement of the lever 21 causes the short arm 26 to engage the lug 29 of the pawl 23 and lift the pawl free of the teeth of the ratchet wheel I6. Simultaneously with the upward movement of the short arm 28, the band 33 is brought into contact with the wheel 32 to hold the shaft I4 against rotation. While the parts are in this position the movement of the rotating element is controlled by the movement of the hand lever, so that by slightly releasing the downward pull on the rope 3|, the band 33 will release the wheel 32 and allow the shaft I4 to rotate with the movement of the hand lever toward the right.

It will be understood that when the load is placed upon the flexible connections I, the torsional effect will be passed from the element I through the gear 44 to the pinion 42 and hence through the shaft I4 to the ratchet wheel I6, so that the element I is limited in its movement by the movement of the hand lever.

When the hand lever has been moved to its position to the right, the pawl 23 may again be allowed to engage the teeth on the ratchet wheel I6 by releasing the downward pull on the rope 3|, which in turn allows the lever 21 to rock on its pivot 26 and move the short arm 28 downwardly with the lug 29 of the pawl 23 incontact therewith. In this position the latch I8 onthe hand lever I0 may be actuated to pull the plunger away from the teeth on the ratchet wheel I6 so that the hand lever may be moved to the position shown in dotted outline in Fig. 3, whereupon the latch may be liberated and the plunger I I permitted to engage one of the teeth on the ratchet wheel I6 and the sequence of movements repeated. 7

It is obvious that various changes may be resorted to in the form, construction and arrangement of the several parts without departing from the spirit and scope of my invention; and hence, I do not intend to be limited to the details herein shown and described, except as they may be included in the claims.

What I claim is:

1. In a hoisting apparatus, a rotatable main shaft for carrying the load, a hanger for supporting one end of said shaft, means on said hanger for actuating the shaft, said means comprising a gear fixed on the main shaft, a short shaft journaled in the hanger and having a pinion secured on one end'in position to mesh with said gear, a brake drum and a ratchet wheel fixed on the other end of said short shaft, a band surrounding said drum and having one end secured to the hanger, a pawl pivoted on the hanger in position to normally engage said ratchet wheel, an oscillatable hand lever fulcrurned on and depending from the short shaft, a plunger longitudinally slidable in said hand lever and adapted to coact with the ratchet wheel, whereby the movement of the hand lever and plunger will control the actuation of the main shaft, and a rock lever pivoted on the hanger and having its inner end arranged to engage the pawl to lift it awa; from the ratchet wheel, said inner end also being disposed to support the free end of the band, whereby the downward movement of the outer end of the rock lever will simultaneously disengage the pawl from the ratchet wheel and bring the band into engagement with the drum, while the movement of the hand lever and plunger will control the actuation of the main shaft'to lift or lower the load. 0 2. In a hoisting apparatus, a rotatable main shaft for carrying the load, a hanger for supporting one end of said shaft, means on said hanger for actuating the shaft, said means comprising a gear fixed on the main shaft, a short shaft journaled in the hanger and having a pinion secured on one end in position to mesh with said gear, a brake drum and a ratchet wheel fixed on the other end of said short shaft, a band surrounding said drum and having one end secured to the hanger, a spring actuated pawl pivoted on the hanger in position to normally engage said ratchet wheel, an oscillatable hand lever fulcrurned on and depending from the short shaft, a spring pressed plunger longitudinally slidable in said hand lever and adapted to coact with the ratchet wheel, whereby the movement of the hand lever and plunger will control the actuation of the main shaft, and a rock lever pivoted on the hanger and having its inner end arranged to engage the pawl to lift it away from the ratchet wheel, said inner end also being disposed to support the free end of the band, whereby the downward movement of the outer end of the rock lever will simultaneously disengage the 5.

pawl from the ratchet wheel and bring the band into engagement with the drum, while the movement of the hand lever and plunger will control the actuation of the main shaft to lift or lower the load. 40

3. In a hoisting apparatus, a rotatable main shaft for carrying the load, a hanger for supporting one end of said shaft, means on said hanger for actuating the shaft, said means comprising a gear fixed on the main shaft, a short shaft journaled in the hanger and having a pinion secured on one end in position to mesh with said gear, a brake drum and a ratchet wheel fixed on the other end of said short shaft, a band surrounding said drum and having one end secured to the hanger, a spring actuated pawl pivoted on the hanger in position to normally engage said ratchet wheel, an oscillatable hand lever fulcrumed on and depending from the short shaft, a spring pressed plunger longitudinally slidable in said hand lever and adapted to coact with the ratchet wheel, a latch operable on the handle to move the plunger away from the ratchet wheel, whereby the movement of the hand lever and plunger will control the actuation of the main shaft,and a rock lever pivoted on the hanger and having its inner end arranged to engage the pawl to lift it away from the ratchet wheel, said inner end also being disposed to support the free end of the band, whereby the downward movement of the outer end of the rock lever will simultaneously disengage the pawl from the ratchet wheel and bring the band into engagement with the drum, while the movement of the hand lever and plunger will control the actuation of the main shaft to lift or lower the load.

' JOHN W. LOOSCHEN.

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