US1136877A - Centrifugal blower and other centrifugal machine of a similar nature. - Google Patents

Description

. T. H. c. HOM ERSHAM. I v CENTRIFUGAL BLOWER AND OTHER CENTRIFUGAL MACHINE OF A SIMILAR NATURE.

" APPLICATION FILED JUNE 1, 1914- Patented Apr. 20, 1915.

walla m TED STATES PTEN THOMAS HENRY COLLETT HOMEBSHAM, OF BRADFORD, ENGLAND.

CENTRIFI JGAL BLOWER AND OTHER CFNTRIFUGAL MACHINE OF A SIMILAR NATURE.

Specification of Letters Patent.

Patented Apr. 2o, 1915.

Application filed June 1, 1914. Serial No. 842,242,

To all whom it mag concern Be it known that I, THOMAS HENRY CoL- LETT HoMEnsHAM, a subject ofthe King of Great Britain, residing at Bradford, Yorkshire, England, have invented certain new and useful Improvements in Centrifugal Blowers and other Centrifugal Machines of turbo blowers, compressors, exhausters, ro-

tary condensers and the like.

i The object of the invention is to mount the guide blades of the machine so that they automatically'set themselves to'the position of maximum eflicie'ncy whatever duty may be demanded of the machine.

-A further object is to interconnect the blades so that in their correct adjustment they retain their correct relative spacings.

The invention will now be described with reference to the accompanying drawings which show portions of a machine of the type described which are sufficient to enable the invention to be understood.

Figure 1 shows a portion of a centrifugal blower in partial section. Figs. 2 and 3 are side views of Fig. 1 taken on the line IIII of Fig. 1 showing two somewhat diflerent forms of guide'blades.

In these drawings 1 represents a portion of the rotor. The guide blades 2- are each mounted by means of a pin 3 in an annulus 4 which annulus is mounted in the frame 5 of the machine. About the annulus 4: and in the framework 5 there is mounted a floating ring or annulus 6 which bears by means of anti-friction devices 7 in the framework 5. This floating annulus 6 carries small pivotal pins 8 having saw cuts in their heads into which the edges of the guide blades 2,

bracket 14 is arranged so that it can be brought into contact with the shaft 11. Fig.

2 is an elevation of the arrangement shown Fig. 2

in Fig. 1 while Fig. 3 is a similar view to with somewhat different-1y shaped guide blades as used in turbines.

As will 'be appreciatedfrom the above description the floating annulus 6 is free to move in a circumferential direction. If the duty of the compressor be changed by throttling or other means the guide blades will themselves tend to move and to take up the position to render the machine most efficient. It will be seen that they are quite free to take up this position and in so doing turn the pins 3 in the ring 4 and move with their outer edges so as to move the floating annulusG which, owing to its engagement with the guide blade by the pins 8, keeps the guide blades with their correct relative spacings. The object of the crank 10 and handle 12 is to provide an arrangement to indicate to the attendant any movement on the part of the annulus 6 and at the same time to provide means for locking the annulus in any given position should it for any purposes be desired so to do.

I claim 1. In centrifugal blowers and other cenfixed annulus, anti-friction means between.

said floating annulus and the framework of the machine, revoluble pins mounted one for each guide blade in said floating annulus said pins being each provided with a saw cut on its head in which the edge of the respective blade enters.

3. In centrifugal blowers and other centrifugal machines of the character described, a plurality of guide blades, revoluble means for mounting said guide blades in the machine, a floating annulus free to move in a circumferential direction under the influence of said blades and connected to all of said blades substantially as 'described.

4. In centrifugal blowers and other centrifugal machines of the character described, a plurality of guide blades,a'ring free to rotate in a circumferential direction connected to each of said guide blades, a crank engaging with said ring, a shaft carrying said crank and a handle connected to said shaft, substantially as and for the purpose described.

5. In centrifugal blowers and other-centrifugal machines of the character described, a plurality of guide blades, a ring free to rotate in a circumferential direction connected to each of said guide blades, and. means connected tosaid floating ring for 15 moving the same by hand and giving visible indication of any movements made thereby substantially as described.

In testimony whereof, I afiix my signature, in presence of two Witnesses.

' THOMAS HENRY COLLETT HOMERSIIAM. Witnesses Homnrr PUMPHREY, CHARLES HIBBERT.

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