US1512546A - Pulley-ventilating means - Google Patents

Description

' 1,512,546 Oct. 21. 1924 A. KMLE PULLEY vEwrILATING- MEANS F11- March e, 192g I lul' 1 ff 6 www..

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Patented Oct. 2l, 1924u UNITEDV STATES FATNT l AUSTIN KIMBLE, OF WAUSAU, WISCONSIN, ASSIGIHIQR TD MAIELATHON ELECTRIC MFG.

CO., OF WAUSAU, WISCONSIN, A CORPORAl-CN F WISCONSIN.

PULLEYVENTILATING MEANS.

Application filed March 6, 1922. Serial No. 541,550.

T 0 all whom t may concern Be it known that I, AUSTIN KIMBLE, a citizen of the United States of America, and a resident of lausau, county of Marathon,

and State of Wisconsin, have invented a new and useful Improvement in Pulley-Ventilating Means, of which the following is a specication.

This invention relates to belted pulleys and means for Ventilating same so as to avoid excessive heating especially when subjected to overload or slippage. In certain kinds of service it is desirable to provide for speed regulation and maximum load control by means of belt slippage in which case it is highly desirable to provide special or artificial means to prevent heating.

The main objects of this invention are to provide improved means for cooling a pulley by artiiicially produced air circulation; to provide a system of motor driven belt connected machines with a common source of cooling draft for the pulleys which are subject to overload slippage; and to provide in combination with a pulley having heat conductive spider or core, an extraneous source of cooling draft.

Referring to the drawings Figure 1 is a conventional diagram showing a plurality of motor driven belt connected machines in plan, in combination with a blower shown in side elevation with connecting means therefor to distribute draft to the several motor pulleys.

Figure 2 is a greatly enlarged end view of the slippage pulley which in this instance is mounted on the motor.

Figure 3 is an axial section on the line 3-3 of Figure 2c Figure 4 is a slightly enlarged view of one of the motors as viewed on the line 4*/1 of Figure 1 and shows also the belt tension adjusting meanse Figure 5 shows a modification= Referring to said drawings, the several motor driven machines 1, which may be printing presses for instance, are driven by motors 2 respectively which are connected to the several machines by belts 3 riding on the motor pulleys 4 and machine pulleys 5.

In order to provide for ready manual adjustment of the belt tension from time to time each pulley 2 is mounted on a leverage support 6 which is provided with a horizontal pivotal support 7 on the stationary frame 8. The lever 6 is adapted to receive the motor on an upwardly projecting arm 6 and the other` arm 6 is provided with an adjusting screw 9 having threaded engagement with an upwardly projecting bracket 8 on said frame 8. A compression spring 10 is disposed between the lever arm 6 and the threaded end of said bracket 8 and the lower end of said screw is provided with a head 9 to retain the end of lever arm 6".

Each pulley l is provided with a ventilator 11, disposed in axial alinement with an air supplying nozzle 12. The several nozzles are arranged as branches of a common air conduit 13 which communicates with a source of draft pressure, as for instance a blower 14.

lilach pulley lcomprises a hub 15 adapted to receive the` motor shaft 16 whereon it is coturnably secured by key 16, a rim 17 and the ventilating member 11. Said member 11 is of unitary character and is preferably in the form of a brass casting and comprises a pair of concentric cylinders i8 and 19 space-d apart by a series of radially disposed longitudinally positioned web members or plates 2O adapted to present a large heat radiating surface to the ventilating draft which is discharged through said ventilator.

Referring to the modiiication shown in Fig. 5 the draft is reversed. Here the fan 21, is provided with a suction intake con duit 22 leading from the pulley 4t to the center of the fan, whereby air is drawn through the pulley and into the fan,

Although but two specific embodiments of this invention are herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by t-he following claims.

I claim:

1. A power plant comprising a plurality` of motor driven belt connected machines arranged and adapted for slippage at the motor pulleys at predetermined loads, in combination with a source of draft pressure and distributingnozzles arranged to discharge air endwise through the several slippage pulleys.

2. In combination a plurality of independently belted pulleys, each adapted and arranged to carry a belt load subject to heat generating slippage, and each adapted to admit a draft endwise therethrough in combination With a Common cooling device comprising a fluid propelling means, and a system of fluid Carrying conduits connected thereto and communicating endwise with said pulleys respectively in eiiectire rolation thereto for producing a draft there 10 through from end to end.

Signed at Chicago this 27th day of Fehruary, 1922.

AUSTIN KIMBLE.

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