US940984A - Blower or pump. - Google Patents

Description

P. J. MINER;

BLOWER 0R PUMP.

APPLICATION rum) MAY 2, 190.8.

940,984. Patented Nov. 23, 1909. v 2 SHEETS-BEBE? 1.-

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F; J. MINER.

BLOWER 0R PUMP.

APPLICATION FILED'MAY 2, 1908.

Patented N0v.23, 1909.

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UNITED STATES PATENT OFFICE.

FRANK J. MINER, OF DETROIT, MICHIGAN, ASSIGNOR 'IO MINER ENGINEERING COM- PANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

BLOWER OR PUMP.

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 WVayne 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.

The invention relates to blowers 0r pumps, and has more particular reference to the means employed for securing positive action.

The invention consists in the construction wherein the propeller blades are moved differentially to alternately expand and contract the fiuid containing pockets therebetween; further in the means employed for producing this differential action, and further in the peculiar construction, arrangement, and combination of parts as more fully hereinafter set forth, and pointed out in the appended claims.

In the drawings, Figure 1 is a view in elevation of a. blower embodying features of the invention. Fig. 2 is a View in vertical central section of the blower. Fig. 3 is a view in side elevation of the blower with casing removed. Fig. 4 is a view in longitudinal section of the blower with parts removed.

Generally described, my improved construction comprises a suitable casing having inlet and outlet ports, a rotating series of blades within the casing arranged to form therebetween fluid pockets, together with means for moving the blades of the series differentially whereby said pockets are eX- panded while in communication with the inlet port and are contracted while in com munication with the outlet port. In the preferred form the blades are carried by a sprocket chain which engages a pair of sprockets within the casing, the specific construction being as follows:

Referring to the drawings, 1 indicates a main shaft journaled in bearings 2 of a casing 3 and provided with a belt wheel 4 for application of power. A follower shaft 5 is journaled in the casing parallel to the main shaft and is driven therefrom by sprockets 6 and 7 of equal size and sprocket chain 8. A plurality of blades are carried by the chain. These each consist of a pair of plates 9 connected to pivot pins or hinges Specification of Letters Patent.

Application filed May 2, 1908.

Patented Nov. 23,1909.

Serial No. 430,433.

10 at their outer ends, which are adapted to closely approach or sweep the casing 3. The plates have divergent curved shanks 11 each of which ispivoted or otherwise properly fastened to the chain, preferably by a hinge or pivot pin 12 engaging adjacent pairs of plates. The shanks are so disposed as to clear the sprocket chain while passing around the wheels at each end of the casing, preferably hugging it closely and lying concentric with the wheel, while the end wall 13 of the casing is concentric with the curve traced by the outer ends .of the blades as they swing around the wheel. A pair of intake ports 14, indicated bythe dotted lines in Fig. 3, are formed in one end plate of the casing in diametrically opposite positions at the point when the swinging in of the forward pivot of the blade fromthe straight section of the chain accelerates the motion of the blade body. A pair of'oppositely disposed exhaust ports 15 are formed in the other end plate of the casing at the point where each blade has entered the tangent after sweeping round the wheel and is therefore moving much slower than the following blade.

In operation, each blade, as, it passes over an intake port, sweeps around the wheel at faster speed than the following blade which acts as an abutment, thus drawing the air in rapidly. At the same time, the revolving blade is approaching the preceding blade which has slackened its speed as it is passing over the exhaust port. This compresses the air in the space ahead of the revolving blade and forces it out of the exhaust port under greater velocity than that of the blades. The same action occurs at each end of the casing and is independent of the direction of rotation of the blades. The discharge is positive, there being but little loss from slippage as in the use of the oblique or propeller form of blade, and high velocity of the air is obtained with low shaft or blade velocity of the driving mechanism.

Where compression and high speed are not necessary the ports may be so disposed as to be uncovered sufficiently to permit the use of the machine as a pump for liquids, the action being positive and reciprocable motion being avoided.

The blades may be hinged together and act as their own chain; other modifications may be made in the construction without each blade as it sweeps the intake port and departing from the spirit of the invention, and I do not limit myself to any particular form or arrangement of parts.

What I claim as my invention is l. The combination with a housing having inlet and outlet ports, of a series of revoluble blades arranged within said housing to form a plurality of pockets successively communicating with said inlet and outlet ports, and means for rotating said blades differentially to expand and contract said pockets when respectively in communication with said inlet and outlet ports.

2. The combination with a casing having an intake and an exhaust port, blades therein articulated at their bases in an endless chain and adapted to form a series of pockets, and means for revolving the chain in the casing adapted to accelerate the motion of to retard it as it passes the exhaust port, whereby the chamber formed between each pair of blades is expanded as it is in communication with the intake port and con tracted as it is in communication with the exhaust port.

3. The combination with a casing, a sprocket near each end thereof and a series of blades articulated in an endless chain whose links formed by the blade bases engage the sprockets, said casing having an intake port swept by each blade at the moment of its acceleration due to its angular velocity as it runson to a sprocket, and an exhaust port swept by each blade at the moment of its retardation due to its change from angular to rectilinear motion as it leaves the sprocket.

at. The combination with a casing, of a pair of spaced revoluble members therein, an endless carrier surrounding and traversing said revoluble members, a series of blades mounted upon said carrier, each blade comprising a pair of plates hinged together l at their outer ends and provided with di- I vergent shanks at their inner ends, the latter being adapted to span said revoluble members as the blade passes therear'ound and being pivotally connected to said carrier.

5. The combination with a casing, of a pair of spaced revoluble members therein, an endless carrier surrounding and traversing said revoluble members, and a series of blades mounted upon said carrier each blade comprising a pair of plates hinged together at their outer ends and having divergent shanks at their inner ends adapted to span said revoluble members as the blades pass therearound, the shanks of adjacent blades being pivotally connected to each other and to the carrier.

6. The combination with a casing, of a drive shaft journaled in the casing, a follower shaft parallel thereto, alined sprockets on the shaft and an endless series of articulated blades, each parallel to the shafts traversing the sprockets, each blade having a forked inner end adapted to span a sprocket as it passes around it, and the casing having an intake port adjacent the point where the blades run on the sprockets and an exhaust port adjacent the point where they leave the sprockets.

7. The combination with a casing, of a drive shaft journaled in the casing, a follower shaft parallel thereto, alined sprockets on the shaft and an endless series of articulated blades, each parallel to the shafts, traversing the sprockets, each blade consisting of a pair of plates pivoted together at their outer ends with their inner portions bent into divergent curved shanks adapted to span a sprocket when the blade passes around it and the casing having an intake port adjacent the point where the blades run on the sprockets and an exhaust port adjacent the point where they leave the sprockets.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK J. MINER.

Witnesses:

C. R. STICKNEY, OTTO F. BARTHEL.

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