US1361480A - Winding mechanism - Google Patents

Description

1. F OCONNOR. WINDING MECHANISM.

APPLICATION FILED MA.Y2,19I8.

1,361,480. Patented Dec.'7,1920.,

WITNESSES:

OFFICE.

JOHN E. OCONNOR, or CHICAGO, ILLINOIS, ASSIGNOl-t T0 vWILLIAM H. MINER, or

v CHAZY, new YORK.

To all whom it may concern Be it known that I, JOHN F. OCoNNoR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in \Vin'ding Mechanisnis, of which the following is a full, clear, concise, and exact description reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in winding mechanisms.

The object of the invention is to provide a simple and etficient winding mechanism, such as employed as hand brakes for railway cars, and wherein provision is made for a relatively lower leverage ratio high speed and a relatively high leverage ratio slow speed winding movement.

In the drawing forming a part of this specification, Figure 1 is a side elevational view of a handbrake suitable for railway cars and showing my improvements in connection therewith. Fig. 2 is a vertical, sectional view, taken substantially on the line 2-2 of Fig. 1. Fig. 3 is another vertical, sectional view, taken on the line 33 of Fig. 2.

In said drawing, 10 denotes a portion of a car wall or other member to which the improved winding mechanism is attached. The mechanism, as shown, comprises, broadly,a housing or casing A, a .chain winding drum B,a high speed wheel C, and a low speed wheel D, together with interposed gearing as hereinafter described.

The casing A may be made of any suitable desired form and material and as shown, includes a back wall or plate 11 riveted to the car wall 10; and an outwardly offset, hollow casing proper having an upper curved wall 12, depending side walls 13-43, and an outer end wall 14. The casing is left open at the bottom to permit entrance of the brake chain, the upper link 15 of which is shown in Fig. (2 attached to the drum B.

The drum B about which the chain or other flexible member is adapted to be wound, is of spool form having a gear wheel 16 at its outer end and a larger gear wheel 17 at its inner end. The drum is rotatably mounted in any suitable manner, as for instance, on the pin 18 which is supported in Specification of Letters Patent.

Patented Dec. 7, 1920.

Application filed May 2, 1918. Serial No. 231,985.

suitable bearings formed in the inner and outer walls 11 and 14 of the casing A.

The high speed hand wheel G is provided with a hub 19, which is suitably journaled in a part bearing 20 formed integrally with the outer wall 14 and a part -,bearing provided by an attachedcasting 21.

This construction is used so as to permit proper assembling of the parts as will be understood. The casting 21, after the parts are assembled, is preferably permanently riveted to the casing A, as shown in the drawing. At its inner end, the hub 19 is formed with a gear 22 arranged to cooperate with the gear 16 formed on the drum B.

The slow speedhand wheel D is keyed to a hollow sleeve 23 which is rotatably mounted within the hub 19 of the wheel C. Said sleeve 23 is extended to the'inner wall of the casing A and is provided with a preferably integral relatively small diameter gear 24 which meshes with the gear 17 of: the drum B. In order to provide suflicient bearing for the sleeve 23, I employ a bushing 25 which is carried by a through bolt 26 extending preferably to the inner side of the car, wall 10 at one end and having a suitable nut and washer at its other end to retain the hub of the hand wheel D and other parts in proper position.

Cooperable with the gear wheel 17'is a gravity-contro1led locking dog 27 pivoted on a pin28 carried by the casing A, said dog 27 having a handle 29 extended outside of the casing and by which the dog can be released.

The operation is as follows: In order to take up the usual slack ofthe brake chain as quickly as possible and when no great force need be exerted, the operator employs the hand wheel C, which is made of larger diameter than the hand wheel D, and rotates said wheel C clockwise, as indicated. by the arrow in Fig. 1. This rotation of the wheel C will, through the intermediary of the gears 22 and 16, cause rotation of the drum B- in a counterclockwisedirection. This movement will be permitted by the gravity-controlled dog 27 but it is evident that the latter will prevent reverse or backward rotation of the drum unless positively released. During this rotation of the drum B from the hanc wheel C, the other Wheel D will be similarly rotated freely through the intermediary of the gears 17 and 24. Due to the relative diameters of the gear wheels 22 and 16, it is evident that the slack can be taken up very rapidly in the manner described, although the leverage ratio will be comparatively small. 7

After the slack has been taken out of the chain and it is desired to employ a higher leverage ratio, the operator will use the hand wheel D and rotate the latter in the same manner as with the wheel 0. The hand wheel D, through the gears 24 and 17, will cause rotation of the drum B inithe same manner as before at a slower speed but at an obviously multiplied leverage ratio. The

chain can be released at any time by disengaging the locking dog 27, as will be obvious.

The device herein shown and described provides for a rapid winding action, together with the necessary high \leverage ratio; it is also compact; comprises a mini: mum number of parts; and can be cheaply manufactured.

I claim:

1 In a winding mechanism, the combination with a rotatable element, of means for rotating said element at one speed and including a manually operable member and interposed gearing, and means independent of the first named means for rotating said element at a different speed and including a manually operable member and interposed gearing, each of said manually operable members being in the form of a hand wheel, the hand wheels being rotatable about the same axis.

2. In a winding mechanism, the combina tion with a casing and a rotatable 'chain winding drum therein, of two sets of independently operable means for rotating said drum at different speeds, each set including a manually operable member located outside of the casing on the same side thereof and gearing within the casing interposed between the member and the drum.

In a winding mechanism, the combination with a rotatable element having two gears of different diameters rotatable in unison therewith, of a driving gear cooperable with one of said two first named gears for rotating said element at one speed, a driving gear cooperable with the other of said two first named gears for rotating said element at a different speed, and a adapted to be secured to of a chain winding ported about a horizontal axis by said casing,

5. Ina. winding mechanism, the combina-' tion with a casing and a winding drum rotatably mounted therein, said drum having two gears of diflerent diameters rotatable in unison therewith ofoa driving gear cooperable with one of the first named gears and rotatably supported by said casing, a second driving gear cooperable with the other of the first mentioned two gears, the last named'driving gear being also rotatably means associated with each driving gear for manually'rotating the same.

6. In a hand brake for railway cars and the like, the combination with a casing a'daptedto be secured to the wall of a car, of a chain winding drum rotatably supported by said casing, said drum having gears of different diameters at its ends, two

independent manually actuated gears also rotatably supported by said casing and cooperating respectively with the two gears of the drum, and a hand wheel rotatable in unison with each vof. said manually actuated gears.

7. In a hand brake for railwaycars and the like, the combination with a casing drum rotatably supsaid drum having gears of different diameters at its ends, and two independent manually actuated gears also rotatably supported about a horizontalaxis by-said casing and cooperating respectively with the two gears of the drum,.said manually actuated gears being rotatable about the same axis, and means cooperable with one of said end gears for locking said drum against reverse rotation. e

In witness that I claim the foregoing I have hereunto subscribed my name this 16th day of April, 1918.

JOHN F. OCONNOR.

the wall of a car,

supported by said casing, and independent

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