US979324A - Blower or pump. - Google Patents

Description

P. J. MINER. BLOWER OR PUMP.

n 1 9 1 91 2 E N U J D B W E N E R oh 0 9 1 61 2 B E P.. D E T.. I P. N 0 T. T.. A o T. L D.. P A

0: l 9 Y 1 0y 2 C. nu D d e ,Tu n. Lw a D..

llf :l IP IM mw l l ew N m i ,N 1 .z @uw N e. fl 4 fr w N 1. w

1N VEN TOR W1 T NESSES MIN R FAME 0T.

P. J. MINER. BLOWER 0R PUMP. APPLIOATION FILED H1126, 1909. RBNEWBD JUNE 29, 1910.

Patented Dec. 20, 1910.

3 SHEETS-BHEET 2.

INVENTOR 7 TToRNEx/S WITNESSES.'

THE NaRRls Parras ca v/As F. J, MINBR.

BLOWER 0R PUMP. APPLICATION FILED PEB. ze, 1909. RBNIIWBD JUNE 29, 1910.

Patented Dec. 20, 1910.

3 SHEETS-SHEET 3.

INVENTOR afm I 1HE Noxms PETERS 52 WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

FRANK J. MINER, OF DETROIT, MICHIGAN, ASSIGNOR TO MINER ENGINEERING COM- PANY, OF DETROIT, MICHIGAN,

BLOWER Application filed February 26, 1909, Serial No. 480,227.

To all whom it may concern:

`Be it known that I, FRANK J. MINER, a citizen of the United States of America, residing at Detroit, in the county of lVayne and State of Michigan, have invented certain new and useful Improvements in Blowers or Pumps, of which the following is a specification, reference being had therein to the accompanying drawings.

In pressure blowers or pumps of the type wherein the blades moving in a closed casing are used to propel the air or fluid therethrough, it is customary so far as known to me to employ either radial or propeller blades secured to a rotatable shaft, or else a series of buckets carried by a flexible endless belt or chain passing around and driven by suitable rotating members. In blowers of this type constructed in such manner, it is difficult to prevent leakage around the blades, and, furthermore, in the belt or chain type, the stretching of the chain or belt, due to centrifugal force, is a very obnoxious feature.

This invention relates to a blower or pump whereby a series of conveyer blades moving at constant speed are adapted to impart velocity to the air or fluid propelled greater than the speed of the blades and whereby leakage around the blades is to a large eX- tent obviated and the destructive effects of centrifugal force are prevented.

The general structure of the device shown but not claimed in this application corresponds to that shown and claimed in my prior application for blowers or pumps, iiled May E30, 1908, Serial No. 430,433.

The invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a view in central transverse section of a blower or pump embodying features of the invention. Fig. 2 is a view, partially in section and partially iii side elevation, on line m-rv of Fig. 1. Fig. 3 is a view in longitudinal section through the casing' showing propelling blades in end elevation.

Referring to the drawings, 1 indicates a drum or shell closed by side plates 2 detachably secured in place by suitable means and Specification of Letters Patent.

A CORPORATION OF MICHIGAN.

OR PUMP.

Patented Dec. 20, 1910.

Renewed June 29, 1910. Serial No. 569,579.

provided with elongated central openings. i Bonnets 3 secured over these openings, have l alined bearings A in which a central drive shaft 5 is jouriialed, a pulley wheel G or like means for applying power being secured on its outer end. A gear wheel 7 is secured on l the shaft in each bonnet. A series of toothed l racks S adapted to mesh with the gears are pivoted together at their ends to form an endless chain iii each bonnet by pivot bolts 9 extending transversely through the casing channel. Friction rolls 10 journaled on the pivot pins within the bonnets bear outwardly against the face of a flange 11 which forms a cani path or track around the inner face of each bonnet, of such contour as to hold the racks in mesh with the drive gear 7. As a convenient detail of construction the' l eo `opeiiiiigs in the side plates 2 are slightly l smaller' than and concentric with the cam path whereby a retaining ledge is formed which prevents eiidwise movement of the rolls 10.

Each pair of links in the chain is secured rigidly to the base of a blade 13 extending transversely across the shell. The blade is preferably substantially triangular in crosssection and is adapted to completely fill the space between the rack and the inner periphery of the drum or shell. A plate 14 movably secured in a slot in the apex of each blade is yieldingly projected against the i inner periphery of the shell by suitably disposed springs 15. As a preferable mechanical construction a rib 16 of fiber or like material is inset in the outer edge of each blade as a convenient means for eliminating friction and securing a tight joint with the shell and casing after the manner of a piston packing ring.

, The drum 1 has an inlet opening 17 connected by oppositely disposed channels 18 with intake ports 19 which are so disposed as to be swept by each blade at the moment of its greatest acceleration due to the angular movement imparted to it by the rounded l, ends Q0 of the cam path between parallel straight limbs 21 thereof. A discharge in the shell with discharge ports 24 each so disposed as to be swept by each blade at the moment oit its commencing' its t'orward angular movement. Y

Vinasmuch as the links when they pass around the corners o'l' the cam path open so as to leave a small space indicated at 25. washers 2G are placed upon the pivot pin tl in suchv position as to sea l. these openings.

v'lhe blades are connected by or have hinged joints indicated at 2T and 2S ot such a nature that they are tight and do not allow the air or tluid to escape by them.

Py this arrangement of parts each blade as it approaches an inlet port has an accelerated motion in reference to the blade ahead ot it whereby the air or tluid t 'apped between it and the preceding` blade .is compressed and held under pressure while each pair ot' bl: des are traversing' either' ot the pa 'allel limbs 21 ot' the cam path. As each blade commences its accelerated motion around the end ot' the fam path it r; pidly uncovers an exhaust port and allows the t'apped or compressed air or tluid to escape through the outlet thereby imparting a velocity to it higher than the traveling` speed ot the blades.

One ot the chiet advantages of the eon- .struction the rigid continement or" the pi'opelling links by the :am path so that under high speed, centrifugal torce does not tend to throw the blades outward toward the shell and they therefore lan be made to closely tit. thus greatly increasing the etiiciency ot the blower. Furthermore, the increased leverage due to the sweeping' ot' the torv 'ard pivot in each link around the short turn ot the path increases the compressinre` power at the moment when it is most needed without materially altectmg' theI load on the drive gear.

The taces ot the wheels and links may be ma le wide enough to transmitany desired powe' and the machine is simple in its construction and very etiiective.

Obviously, changes in the details ot construction may be made without departing' from the spirit olI the invention and lY do `not care to limit niyselt to any particular Jt'orm or arrangement ot parts.

ll'hat l claim as my invention is l. rllhe coinbini'ition with a 'asing havingr inlet and outlet ports, ot' a series of revoluble blades arranged within said casing' and maintained in substantially pa 'allel relation transverse to the casing' to torni a plurality of pockets successively connnunicating with said inlet and outlet ports` means `tor rotat inge' said blades ditterentially to expand and contact said pockets when respectively in coinmiuiication with said inlet and outlet ports, and means in the casing engaging the yl l i l -within said casing to torni a se blades adapted to define the motion thereof when operated by the rotating;v means.

rthe combination with a casing having inlet and outlet ports otl revoluble blades articulated tog/'ether and maintained in planes parallel to the axis ot revolution ries ot iiiocliets successively cominunicating' with said inlet and outlet ports, rotatable driving means adapted to revolve the blades in the lasiiile` and means in the casing engaging the blades and coactiiig with the driving'lnieans to move the blades dilterentially whereby the said pockets are expanded and contracted when respectively in communication iyzith lsaid inlet and outlet ports.

il. The combination with a 'asingI having' inlet and outlet ports of i'evoluble blades articulated together and maintained in planes parallel to the axis ot revolution within said casing to 'it'orui a series ol pockets successively communicatingr with said inlet and outlet ports and adapted to travel in a 'am path in the asing` whereby the said. pockets are succes ely expanded and contracted when respectively in comminiication with said inlet and outlet ports, and a rotatable member engaging theblades adapted to move them around the j-am path.

-l. The combination with a fusingY having inlet and outlet ports ot revoluble blades having rigid bases articulated in an endless chain within the c: sing whereby the blades torni a series oli' pockets successively communi -ating with said inlet and outlet ports and adapted to trafvel in a cam path `in the 'asiirg' whereby said pockets are successively expanded and contracted when respectivly in communi 'ation with said inlet and outlet ports and a rotatable member adapted to successively engage and move the blade bases along the path. the blades beingI maintained in planes parallel to thl ax's ot revolution.

5. 'llhe combination with a casing having inlet and outlet ports, of revoluble blades ha ving' rigid bases articulated in an endless chain within the casing' whereby the blades torni a series ot' pockets successively conimuiiicating with said inlet and outlet ports` a tianege deliningg the motion ot' the bases and a rotatable member adapted to engage and drive the bases along` the llange, the tlange and n'ieinber coactinfe to successively expand and contract the pockets as they are respectively in communi 'ation with said inlet and outlet poi'ts. the blades being' maintained in planes parallel to the axis ot revolution.

(3. rl"he combination with a casingI havingr inlet and outlet ports. oit revoluble blades.y bases on the blades articulated in an endless chain within the casing' whereby the blades torni a series ot pockets successively com ,municating with said inlet and outlet ports` CIK each base having raclt teeth on its inner side, g in Contact with the shell throughout the an endless flange in the casing confining the blades to move along a predetermined path, and a rotatable gear engaging the base racks successively and forcing them along the flange, the gear and flange coacting to successively expand and contract the pockets as said inlet and outlet ports.

T. rl`he combination with a casing having inlet and outlet ports and a flange on its wall forming an endless cam path of revoluble blades articulated in an endless chain at their bases which form toothed links therein, and a rotatable gear in mesh with the links, adapted to hold the blade bases against the cam flange and force them along it.

S. The combination with a casing having inlet and outlet ports, side walls with corresponding flanges on their proximate faces each forming an endless cam path, a gear rotatably secured in the casino', and revoluble blades in the casing articulated in an endless chain engaging the gear and limited in its direction of motion by the flanges, the latter being adapted to alternately accelerate and retard the motion of each blade, and the casing having an exhaust port at the place of acceleration of the blades and an inlet port at the place of retardation.

9. The combination with a casing having inlet and outlet ports and consisting of an outer shell and parallel side plates closing the shell ends, a shaft journaled in the casing, and inwardly extending corresponding cam flanges on the side plates around the shaft, a series of blades articulated in an endless chain encircling the shaft within the flanges which are adapted to engage the blades near the inner ends, and a driving member on the shaft adapted to engage the blades and force them against and along the flanges with their outer ends sweeping the inner face of the shell, the cam flanges being adapted to accelerate the motion of each blade as it approaches an outlet port and recedes from an inlet port.

10. The combination with a casing having inlet and outlet ports and consisting of an outer shell, parallel side plates closing the shell ends, a shaft journaled in the casing and a pair of inwardly extending, corresponding flanges on the side plates around the shaft. of a series of blades articulated in an endless chain around the shaft within the flanges against which the blade bases are adapted to bear outwardly and a driving member on the shaft adapted to engage the blades and to force them outwardly and along the cam flanges, the flanges, driving member and blade coacting to hold the blades substantially perpendicular to and l the motion of each blade transit of the cam flange, and to accelerate as it approaches an outlet port and iecedes from an inlet port.

11. The combination with a casing havg ing inlet and outlet ports and consisting of they are respectively in communication with i l l l an outer shell, parallel side plates closing the shell ends, a shaft journaled in the casing and a pair of inwardly extending, corresponding cam flanges on the side plates around the shaft, of a series of blades substantially triangular in section pivotally connected at their base corners, and adapted at their bases to bear againstthe inner faces of the cani flanges with the apices sweeping the inner face of the shell and a drive member on the shaft forcing the bases along the flange, the bases, flanges and driving member coacting to accelerate the motion o each blade as it approaches an outlet port and recedes from an inlet port.

12. The combination with a casing having inlet and outlet ports and consisting of an outer shell and parallel side plates closing the shell ends, a shaft journaled in the casing and a pair of inwardly extending, corresponding cam flanges on each side plate around the shaft, of a series of blades triangular in section, pivot pins each articulating the adjacent base ends of a pair of blades and engaging the inner faces of the cam flanges, and driving means on the shaft engaging the blade bases and forcing the pivot pins around the flanges, the driving means, flanges and pins coacting to accelerate the motion of each blade as it approaches an outlet port and recedes from an inlet port.

13. rl`he combination with a casing having inlet and outlet ports and consisting of an outer shell, parallel side plates closing the shell ends, a shaft journaled 'in the oasing and a pair of inwardly extending, corresponding eani flanges on the side plates around the shaft, of a series of blades substantially triangular in section and pivotally connected at their base corners, and adapted at their bases to bear against the inner faces of the cam flanges with the apices sweeping the inner face of the shell, a drive member on the shaft forcing the bases along the flange, the bases, flanges and driving member coacting to accelerate the motion of each blade as it approaches an outlet port and recedes from an inlet port, and a movable member in the outer end of each blade yieldingly coacting with the shell.

14. A casing with inlet and outlet ports, and having an outer shell, side plates closing the ends of the shell each provided with surrounded by an ina central opening wardly extending cam flange, a series of blades having extended bases articulated atthe flanges with the outer blade ends sweepthe ends 1n an endless chain, Cain rolls ating the innei1 face of the shell. 10 the base ends eaeli bearing against the inner In testimony whereof I aliX iny sigi'iatule laee of the proximate flange, rack teeth on in presence of two Witnesses.

,i the inner margins of the bases in the planes FRANK J. MIN ER.

[l of the eain lianges, a shaft, and driving Titnessesz gears on the shaft engaging the adjacent f C. R. STICKNEY,

bases, adapted to force the blades around A. M. SHANNON.

Images