US1710774A - Winch - Google Patents

Description

J. B. KINSER April 30, 1929.

WINCH Filed Jan. 5, 1927 2 sheets-she t.

HIIIHHIIEII I I gwoemtoc K-LTLEEP April 30, 1929. KmsER 1,710,774

. WINCH Filed Jan. 1927 2 Sheets-Sheet 2 Jwoemtov Kins EP Patented A r. 30, 1929.

UNITED STATES JAMES 13. KINSER, or TULSA, OKLAHOMA.

WINCH.

Applicationfiled January 5, 1927. Serial No. 159,213.

This invention relates to improvements in winches.

The primary object of this invent on isthe provision of a preferably hand operated winch, which may be conveniently and easily operated at a plurality of speeds developing different ratios of effective force with respect to force applied. 1

A further object of this invention is the provision of an improved portable winch which may be conveniently used upon trucks, load-- ing docks, and in inaccessible locations such as corners, and which is relatively light, economical to manufacture, and very durable and powerful; the same being preferably hand operated, and which may be efficiently operated by a single person to lift heavy loads; thus solving the problems of bus nesses which demand the expeditious moving of heavy machinery at relatively small. cost.

Other objects and advantages of this inven" 1 ti on will be apparent during the course of the following detailed description. v e

In the accompanying drawings,formlng a. part of this specification, and wherem similar 1 xrence characters designate correspending parts throughout the several views,

Figure 1 is a side elevation of the improved winch, showing the same geared in what i'z'right be appropriately termed low speed, for the development of its maximum llft ng power with respect to, unit of force applied. Figure 2 is a plan .view of the improved winch. g i I Y Figures 3 and 4 are views taken substantial.- ly on their respective lines in Figure '2 of the drawings; the view in Figure 4 showing the winch geared in what might be called high speed for the development ofa less amount of lifting force per unit of force applied than the gearing illustrated in Figure 1,:tor low speed,

Figure 5 is a fragmentary iew, partly sec tional, of details illustrated in Figure 4, but showinga different position for the gearing of the winch in low speed for the development of maximum lifting force. Figure 6 is a fragmentary sectional View taken substantially on the line 6'6 of Figure5.fl e

Figure 7 is a sectional view taken thru a pawl mounting substantially on the line 7 -f7 of Figure 4. v

In the drawings, wherein for the purpose of illustration is shown only a preferred embodiment of the invention, theletter A may generally designate the improved winch which may comprise a frame 13; drum C; means D for operating the drum C at various speeds and for the development of different ratios of force developedwith respect to force applied. 1

Referring to the frame B, the same is pref erably of channel shape, including a platform portion 10, with upstanding side walls 11 and 12. The walls 11 and 12 are braced in a spaced relation by means of conventional spacing bolts 13 and 14 of well known con struction, and between the walls 11 and 12 the details of the drum C and operating means I) are mounted. a l I Thedrum Cis preferably hollow, including a drum body 20, rotatably mounted in the channel of the frame at one end thereof, and between the walls 11 and 12; the drum body being keyed to or cast with a shaft 21 extending therethrough; the endsof the shaft 21 bearing in the walls 11 and 1.2, as illustrated in dotted lines in Figure 2 of the drawings. The drum body 20 at opposite ends thereof is provided withintegral or rigid retaining flanges 25 and 26; the drum flange 25 bearing a relation to the frame in that it is immediately mounted adjacent the wall 11, and the annular flange 26 is located adjacent to, but in spaced relation with respect to the other wall 12. The flange 26 is appropriately pro vided with gear teeth 30 thereon, circumferentially thereabout, which intermesh with the teeth 31 of a gear 32, which is keyed upon a counter shaft 34 bearing at its opposite ends in the walls 11 and 12, in spaced parallel relation with the drum.

Preferably rigid with the shaft 21, and the flange or gear 26 is a ratchet wheel 35, at the outer side of the flange-gear wheel 26, having inclined teeth 36 thereon over which pawl means to be subsequently described operates.

Handle means 40, comprising part of the operating means D, includes a handle socket member 41 provided with a lower end 42 pi voted uponthe end of the shaft 21 between the wall 12 and the ratchet wheel the end 42 of the handle socket 41 having a segmental portion concentric with the shaft 21, with a plurality of teeth 43 there-about, which are adapted to intermesh with teeth 44 provided about aportion ofthe circumference of the wheel 45 which is rotatably mounted on the shaft 34,.but preferably not keyed thereto, adjacent to the wall '12.

, Between the wheel 45.and the gear 32 is' for respectively cooperating upon. the ratchet wheels and 50, in order that one oi these pawl means may operate on its respective ratchet wheel while the other pawl. means is held inoperative, in order that the drum 20 may be driven.

The pawl means G and H are identicahand each includes a pawl body pivoted at 61, h ving a toothed end adapted'for coopera tion on the teeth of the respective wheels. Lu g means 63 provided on the part to which the pawl is pivoted, to limit the amplitude of. movement 01' swinging of the pawl in one direction. A retaining latch. 65 is pivoted intermediate its ends on a pin 66, to the same support to which the pawl is pivoted, in order that one end of the latch may engage in. a notch 68 of the pawl 60 to hold the same out of ongagen'ient with the teeth oi? its respective ratchet wheel to maintain the pawl inelfective for holding the ratchet wheel against rotation; the end of the latch 65 opposite the end which engages the notch 68 constituting a handle for the moven'ient oi? the latch. pin 66 on which the latch 65 is pivoted, has a coilspring thereabout, one end being fixed in latch 65; the spring 70 intermediate its ends being looped in a resilient relation. and having the opposite end 71 thereof embedded in the pawl 60 intermediate its ends; the spring 70 thus being under a tension to force the pawl at its toothed end 62 against the teeth of the respective ratchet wheel with which the pawl cooperates; and it is to be noted that the coil end 69 of the spring is embedded in the latch or engages the'latch 65 eecentric oi the pin 66, to normally urge the latch at its retaining end against the respective pawl 60.

Referring to the operation of the device, it is to be noted that a handle member 7 5 may be detachably received in the socket end 76 of the handle socket body 41, and upon 0s cillation of the handle mechanism, it is to be noted that the wheel 45 will be oscillated therewith incident to the inter-meshing gear teeth l3 and l i. l Vhen it is desired to drive the drum C direct at high speed, with less ioree than the maximum which can be developed by the machine, the latch mechanism H is inoperatively set in the relation illustrated in Figure 41:, and the pawl mechanism G is operatively set illustrated in Figure 4, to ride over the teeth 86 of the ratchet wheel 35,

and the operations of the pawl devices with their respective ratchet wheels will be understood from the above description, since when the latch lever 65 is received in the notch 68 oi the pawl (30, the pawl will be held out of engagement with the teeth of its respective The ratchet wheel, as illustrated in the pawl do vice H of Figure 4. l/Vith the parts arranged as illustrated in Figure 4, upon oscillating the handleupwardly the pawl 60 of the device G to the ol'l'set' relation of the pawl means G from the center of the drum C, a powerful leverage action is developed. The ratio of work performed to energy applied is 2% to 1, although this may vary.

In event a very pmvertul force is required to do the work, the pawl means G is disposiial inoperative by means of its latch (55, as illus trated in Figure 5, and the pawl II is made to operate on the teeth of its ratchet wheel 50, and it is to be noted that the pawl means II is carried by the wheel 45. Thus, it the handle 40 is oscillated, the downward move ment will move the wheel 45 in a direction to permit the slipping of the pawl member 60 oil the pawl device I-I over the teeth of ratchet wheel 50, but upon upward movement oi the handle device the wheel 45 will. be op positcly moved to enable the pawl. 60 to engage the said teeth and move the ratchet wheel fill with the wheel 4-5, and since the drum C is connected with the ratchet wheel 50 thru the gears 32 and 30, the drum C will be driven. Inasmuch as the gear 32 has a small pitch diameter compared to the gear 26, the drum 0 will. only be moved thru a small arc relative to the arc thru which the handle mechanism is moved, to produce what may be appropriately termed a slow speed operation of the drum C. Incident to the leverage acquired thru the train of: gears, the ratio of work performed to energy applied is 150110 1, although this may vary.

From the foregoing description of this invention it is apparent that a very durable and powerful. type of winch construction has been provided, which is preferably of the portable type, having a compact assemblage to pro duce considerable lifting force which may vary in degree.

A safety pawl 90 idles on the shaft 34: for cooperation on the teeth of gear-flange 25 to prevent return rotation of the drum C.

Various changes in the shape, size, and arrangement of parts may be made to the form of invention herein shown and described, without departing from the spirit of the invention or the scope of the claims.

I claim:

1. In a winch the combination of a supporting frame, a drum rotatably carried by the frame, a ratchet wheel rotatable with the drum, an oscillating handle, releasable pawl 7 ing said ratchet wheel last mentioned by said operating means and including a releasable pawl; said releasable pawls above mentioned adapted for arrangement to have only one of the same engaged with its ratchet wheel at any time. a i

2. In a winch the porting frame, a drum rotatably carried by the supporting frame, a counter shaft rotatably carried by the supporting frame, intermeshing small and large gears carried by the counter shaft and drum respectively, ratchet wheels rigidly'rotatable with the counter shaft and drum, a member oscillatively idling adjacent the ratchet wheel of the counter shaft, pawl means on said member associated with the ratchet wheel of the counter shaft, means to retain the pawl means in'or out of associated relation with its ratchet wheel of the counter shaft, an oscillatively mounted handle, means associating said handle with said member on which the pawl means is mounted. for operating the said member upon oscillation of the handle means, and releas able pawl means associated with said handle means for operation upon the ratchet wheel of the drum.

3. In a winch the combination of a,sup-

porting frame, a drum rotatably carried by the supporting frame, a counter shaft rotatably carried by the supporting frame, intercombination of a supmeshing small and large gears carried by the counter shaft and drum respectively, ratchet wheels rigidly rotatable with the counter shaft and drum, a member oscillatively idling adjacent the ratchet wheel of the counter shaft, pawl means on said member associated with the ratchet Wheel of the counter shaft, means to retain the pawl means in or out of associated relation with the ratchet wheel of the counter shaft, an oscillatively mounted handle, means associating said handle with said member on which the pawl means is mounted for operating the said member upon oscillation of the handle means, releasable I pawl means associated with said handle means for operation upon the ratchet wheel of the drum, and safety pawl and ratchet means for always preventing rotation of the drum in a return operation from the force placed thereon incident to support of a load.

4. In a winch, the combination of a supporting frame, a rotatable drum on the frame, a handle limited to oscillation about the axis of said drum, a ratchet wheel co-axial and movable with thedrum, pawl means carried by the oscillating handle for operation upon the ratchet Wheel to rotate said drum in a predetermined direction, means to maintain said pawl means in or out of operative relation with said ratchet wheel, and means operatively connected with said handle for driving the drum, when the pawl of said operating handle is out of operative relation to its ratchet Wheel, at a reduced speed ratio and in the same predetermined direction, from said handle.

JAMES B. KINSER.

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