US650670A - Relief-valve for suction or blast pipes. - Google Patents

Description

No. 650,670. Patented May 29, I900.

H. L. DAY;

BELIEF VALVE FOR SUCTION 0B BLAST PIPES.

(Application filed Ailg. 7, 1899.) (No Model.)

b enry A, Day

M By

NITED STATES PATENT FFICE.

HENRY L. DAY, or MINNEAPOLIS, MINNESOTA.

RELIEF-VALVE FOR SUCTION OF? QLAST PIPES.

SPECIFICATION forming part of Letters Patent 0. 650,670, datedMay 29, 1900.

Application filed August 7, 1899- To all whom it may concern:

Be it known that I, HENRY L. DAY, of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful Improvements in Relief-Valveslfor Suction or Blast Pipes, of which the following is a specification. 1

My invention relates to relief-valves for use in connection with the suction or blast pipes for conveying materialssuch as sawdust, shavings, or dust from machines in woodworking shops, elevators, or other places-to storage-rooms or to boiler-furnaces or to other suitable receptacles for such materials, and is designed as an improvement over a similar device shown and described in Letters Patent of the United States No. 503,126, granted to me August 15, 1893.

The object of the invention is to provide a mechanism that is more simple in construction than the device described in the abovenamed patent and will therefore be easier and cheaper to manufacture, though accomplishing substantially the same result.

The invention consists generally in avalve chamber or box having a valve, a main inletopening, and a divided outlet-openin g, in combination with an elbow or curved section of pipe whose wall acts as adefiector to direct a portion of the air and the heavier or coarser material through one section of the valvechamber and permitthe surplus air and lighter material to pass through another section, and a fan or fans in connection with said pipe, all as hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a longitudinal section of the valve-box embodying my invention and the pipe-section and fancasing with which said box is connected on the line y y of Fig. 2. Fig. 2 is a longitudinal section on the line was of Fig. 1.

In the drawings, 2 represents a fan, and 3 its casing, of any preferred size and construction, and said fan may be located at any desired distance from the relief-valve and in any preferred position to draw material from wood-working machinery in the usual manner.

5 is the valve-chamber, arranged at any preferred point in the blast-pipe and liavin g an in- Serlal. No. 726,380. (No model-l near the inlet-opening to the valve-chamber I provide a curved pipe-section 4, Whose wall .acts as a deflector to divert the heavier ma terial that is thrown against it and direct the same, with a portion of the air-blast, into one.

section of the valve-chamber. Within said chamber I prefer to provide a horizontal plate 10, centrally arranged and dividing said chamber into an upper and lower compartment or passage, and on said plate I provide a valve 11, vertically pivoted on the rod 12 and operated by a crank 13. in Fig. 2, is pivoted, preferably, near the middle of the plate 10 and serves to divert the shavings and heavier material into either of the pipes 8 or 9, the material being directed into the space above said plateby contact with the curved wall of said pipe-section, as heretofore described. Should the valve 11 be parallel with the longitudinal axis of said valvechamber, the heavier material will be distributed between the two pipes 8 and 9. Should the valve be in the position indicated in full lines in Fig. 2, all of the heavier material will be directed into the pipe 9 or into the pipe 8 should the valve be in position indicated by dottedlines in said figure. While the heavier particles are being deflected from the curved surface of the section 4, a portion of the airblast and the lighter particles and dust held in suspension thereby will pass beneath the plate 10 and into the pipes 8 and 9.

. By providing a curved pipe or elbow in the blast-pipe at a point near the valve-chamber I utilize the curved wall as a deflector,and thus dispense with an independent plate for that purpose; but I do not wish to confine myself to any particular form or degree of the curved section, it being necessary simply to provide such an angle in the pipe to cause the heavier particles that are thrown against the wall of the pipe to be deflected to a point where they may be directed to a furnace-boiler or storage-bin, as preferred.

I have shown but one form of valve-chamber and arrangement of valve therein; but

This valve, as shownobviously the position of the valve may be varied, according to the relative positions of the valve-chamber and the curved section of the blast-pipe, and while I have shown a single fan connected with the blast-pipe obviously two or more fans may be employed and the valve-chamber located at any preferred distance from said fan and in any p ref erred position with respect to said fan, and the various details of the valve-chamber, such as the means for operatingthe valve to its position in the chamber, may be varied by any one skilled in matters pertaining hereto, and

I therefore do not wish to confine myself to the specific construction herein described.

Having thus described my invention, I claim as new and desire to secure by Letters Iatent:

1. The combination, with a valve-chamber having an inlet-opening and divided outletopenings and a valve provided in said valvechamber, of a curved pipe-section provided in the blast-pipe near said inlet-opening, the wall of said section acting as a deflector to direct a portion of the air-blast, and the heavier materials thrown against it, to one section of the valve-chamber while the surplus air and lighter material pass to another section of the valve-chamber, and a fan or fans connect ed with said blast-pipe, substantially as described.

2. The combination, withavalve-chamber, having an inlet-openin g and a divided outletopening, means provided within said valvechamber for directing a portion of the airblast into either of said outlet-openings, a curved pi pe-section provided in the blast-pipe near said valve-chamber,the wall of said pipesection acting as a deflector to direct a portion of the air, and the heavier material carried thereby, which is thrown against said wall, to one section of said valve-chamber while permitting the surplus air and the lighter material to pass into another section, and a fan or fans provided in connection with said blast-pipe, substantially as described. a '3. The combination, with a valve-chamber having inlet and outlet openings and pipes 8 and 9 connected to said outlet-opening, of a plate 10 provided in said chamber, a valve 11, means for operating the same, a curved pipe-section provided in the blast-pipe near the inlet opening of said valve chamber whereby when the air-blast passes through the same the heavier material will be thrown against the curved wall of said section and deflected into the space above said plate 10 to be directed by said valve into either of said outlet-pipes 8 or 9, while the surplus air and lighter material carried thereby pass through said chamber beneath said plate, substantially as described.

In witness whereof I have hereunto set my hand this llth day of April, 1890.

HENRY L. DAY. In presence of RICHARD PAUL, M. O. NOONAN.

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