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Air-blast

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US250073A
US250073A US250073DA US250073A US 250073 A US250073 A US 250073A US 250073D A US250073D A US 250073DA US 250073 A US250073 A US 250073A
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blast
pipe
air
pipes
volume
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation, e.g. by means of wall-ducts; systems using window or roof apertures
    • F24F7/007Ventilation, e.g. by means of wall-ducts; systems using window or roof apertures with forced flow
    • F24F7/013Ventilation, e.g. by means of wall-ducts; systems using window or roof apertures with forced flow using wall or window fans, displacing air through the wall or window possibly through a grill or through a shutter or flap

Description

(No Model.)

S. W. HUDSON.

AIR BLAST.

No. 250,073. Patented Nov. 29,1881..

WITNESSES IJVVEJVTOR N. PUERS. Phuxwliihngnpnpr. wningwn. Dv C.

UNITED STATES PATENT GEEICE.

SAMUEL w. EUDsoN, or HUDsoNDALE, PENNSYLVANIA.

AIR-BLAST.

SPECIFICATION forming part of Letters Patent No. 250,073, dated November 29, 1881.

Application filed Scptemberi, 1881. (No model.)

To all 'whom it may concern:

Be it known that I, SAMUEL W. HUDSON, of Hudsondale, in the county of Carbon and State of Pennsylvania, have invented certain new and useful Improvements in Air-Blasts, of which the following is a specilication.

The object of my invention is to provide ap paratus by which, with a given primary or initial blast, a blast of increased volume but decreased pressure or velocity may be produced as desired.

In the accompanying drawings, Figure l is a vertical longitudinal section, and Fig. 2 a transverse section on the line 2 2 of Fig. 1.

A is an ordinary blower-fan, its blast being delivered through the pipe a. The pipe t extends into the aring end of a pipe, B, of larger diameter, and the pipe B in the same manner projects into a larger pipe, C. Sliding collars or cut-offs D D on the pipes a and B serve to close or regulate the size of the annular open-y ings .r and y between the pipes a and B and the pipes B and C, as will be clear from `the drawings. The fan A, being driven at a given speed, will produce a blast through a, which will draw air through the annular opening x, thus increasing the volume and decreasing the velocity.. The blast, passing on through B, in like manner draws in air through the annular opening y. The collars can be adj usted to vary the size of the openings and regulate the volume of the blast delivered at Z. Thus, forexample, with a blast in a, with a volume otone hundred feet and a pressure of six pounds per square inch, I may produce at Z a blast having a volume ot' six hundred l'eet and a pressure of one pound.

It will be seen that the fan may be run at a uniform speed and the character of the blast varied by adjusting the collars on the pipe. The primary blast may be generated in any suitable manner.

My invention may be used in connection with exhaust or pressure ventilatingapparatus, or for any other purpose where such an operation as that above described is desirable.

` What I claim isl. The combination of the blower-fan, the blastpi pe a, and the pipes B and C, projecting one within the other and having aring ends, substantially as described.

2. The combination ot' the blower-fan, the pipes a, B, and (l, and the sliding regulatingcollars D, substantially as set forth.

3. The combination of the blast-pipe, the air-supply pipe into which the blast-pipe projects, and a device for controlling and regulating the air-supply, as set forth.

In testimonyT whereof I have hereunto subscribed my name.

SAMUEL W. HUDSON.

\Vitnesses:

F. BER'roLE'rTE, L. H. BARBER.

US250073A Air-blast Expired - Lifetime US250073A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002110A (en) * 1973-04-02 1977-01-11 Institutal Pentru Creatie Stintifica Si Tehnica Automatic obturator for a gasodynamic ventilation device
US4365938A (en) * 1980-01-14 1982-12-28 Warinner Archie F Modular low head high volume water pump and aquaculture system
US5993167A (en) * 1996-06-26 1999-11-30 Mochizuki; Takuo Apparatus and method for energy conversion of pressurized fluid
US6322327B1 (en) 2000-01-13 2001-11-27 Walker-Dawson Interests, Inc. Jet pump for transfer of material
US20040011749A1 (en) * 2002-07-19 2004-01-22 Hutchinson Robert J. Apparatus and methods for separating slurried material
US20040013534A1 (en) * 2002-07-19 2004-01-22 Hutchinson Robert J. Recirculating jet pump and method of moving material
US20040161343A1 (en) * 2001-06-25 2004-08-19 Odd Strand Process and a device for transport of gas
US6860042B2 (en) 2002-07-19 2005-03-01 Walker-Dawson Interests, Inc. Excavation system employing a jet pump
US7901191B1 (en) 2005-04-07 2011-03-08 Parker Hannifan Corporation Enclosure with fluid inducement chamber

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002110A (en) * 1973-04-02 1977-01-11 Institutal Pentru Creatie Stintifica Si Tehnica Automatic obturator for a gasodynamic ventilation device
US4365938A (en) * 1980-01-14 1982-12-28 Warinner Archie F Modular low head high volume water pump and aquaculture system
US5993167A (en) * 1996-06-26 1999-11-30 Mochizuki; Takuo Apparatus and method for energy conversion of pressurized fluid
US6322327B1 (en) 2000-01-13 2001-11-27 Walker-Dawson Interests, Inc. Jet pump for transfer of material
US6450775B1 (en) 2000-01-13 2002-09-17 Walker-Dawson Interests, Inc. Jet pumps and methods employing the same
US6994527B2 (en) * 2001-06-25 2006-02-07 Alstom Technology Ltd Process and a device for transport of gas
US20040161343A1 (en) * 2001-06-25 2004-08-19 Odd Strand Process and a device for transport of gas
US20040013534A1 (en) * 2002-07-19 2004-01-22 Hutchinson Robert J. Recirculating jet pump and method of moving material
US6817837B2 (en) 2002-07-19 2004-11-16 Walker-Dawson Interest, Inc. Jet pump with recirculating motive fluid
US6860042B2 (en) 2002-07-19 2005-03-01 Walker-Dawson Interests, Inc. Excavation system employing a jet pump
US6911145B2 (en) 2002-07-19 2005-06-28 Walker-Dawson Interests, Inc. Apparatus and methods for separating slurried material
US20050205497A1 (en) * 2002-07-19 2005-09-22 Hutchinson Robert J Apparatus and methods for separating slurried material
US20040011749A1 (en) * 2002-07-19 2004-01-22 Hutchinson Robert J. Apparatus and methods for separating slurried material
US7045068B2 (en) 2002-07-19 2006-05-16 Walker-Dawson Interests, Inc. Apparatus and methods for separating slurried material
US7901191B1 (en) 2005-04-07 2011-03-08 Parker Hannifan Corporation Enclosure with fluid inducement chamber

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