US706200A

US706200A - Boiler-tube cleaner.

Info

Publication number: US706200A
Application number: US9976402A
Authority: US
Inventors: Gustav C Quasebarth
Original assignee: NATHAN HOLBERT
Current assignee: NATHAN HOLBERT
Priority date: 1902-03-24
Filing date: 1902-03-24
Publication date: 1902-08-05
Anticipated expiration: 1919-08-05

Description

No. 706,200. Patented Aug. 5, I902.

G. C. HUASEBARTH.

BOILER TUBE CLEANER.

(Application filed Min. 24, 1902.)

(No Model.)

THE mums PETERS co moruuma, wmnmmon, o. c

Urrnn States Patent rtrc GUSTAV C. QUASEBARTH, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TONATHAN I-IOLBERT, OF ST. LOUIS, MISSOURI.

BOILER TUBE CLEANER.

SPECIFICATION forming part of Letters Patent No. 706,200, dated August 5, 1902.

Application filed March 24, 1902. Serial No. 99,764. (No model.)

To ctZZ whom, it may concern:

Be it known that I, GUSTAV C. QUAsE- EARTH, a citizen of the United States, and a resident of St. Louis, Missouri,-have invented certain new and useful Improvements in Boiler-Tube Cleaners, of which the following is a specification.

My object is to construct a boiler tube cleaner; and my invention consists of a pis- IO ton-casing adapted to slide back and forth in the boiler tubes and having a transverse bore forming a hammer-piston chamber, the ends of said chamber being enlarged to form die-holder seats; a hammer-piston slidingly I 5 mounted in said chamber, said piston having valve-releasing-port-connecting grooves in its periphery; die-holders slidingly mounted in said die-holder seats; dies carried by said die-holders; a valve-casing attached to the 2'0 piston-casing and having a transverse bore parallel with the piston-chamber and forming a valve-chamber; a valve slidingly mounted in said valve-chamber and having pressure-port-connectin g grooves in its periphery,

2 5 and having an eXhaust-port-connecting groove in its periphery, and having valve-shifting ports connecting the pressure to each end of the valve; plugs closing the. ends of said valve-chamber and a steam-supply pipe con- 3o nected to said valve-casing, there being pressure-ports leading from the supply-pipe to the valve chamber and there being pressureports leading from the,valve-chamber to the piston-chamber, so that the reciprocation of 3 5 the valve admits pressure first to one end of the valve-and then to the other, and there being an exhanst-port, so that the reciprocation of the valve will release the exhaust from one end of the valve while the pressure is being admitted to the other end, and there being valve-releasing ports leading from said valve-chamber to the piston-chamber, and there being second valve-releasing ports leading from the piston-chamber, so that the re ciprocation of the piston will connect said first and second valve-releasing ports to re lease the pressure first from one end of the valve and then from the other end, as required to reciprocate the valve.

Figure 1 is an elevation of the outer end of a boiler-tube cleaner embodying the principles of my invention. Fig. 2 is a side elevation as seen looking in the direction indicated by the arrows in Figs. 1 and3. Fig. 3

is a central section on the lines 3 3 of Figs. 1 and 2. Figs. 4 and 5 are plans of the meeting faces of the piston-casing and valve-casing, Fig. 4 showing the piston-casin g and Fig.

5 showing-the valve-casing.

Referring tothe drawings in'detail, the piston-casing 6 is substantially circular in end elevation,'as shown in Fig. 1, and is adapted to slide back and forth in the boiler-tubes, the largest diameter of the casing being slightly less than the'inside diameter of the boiler-tube. The transverse bore 7 is formed through the casing, and the bushing 8 is inserted-into said bore, the enlarged openings at the ends of-the bushingforming the diecarrier seats 9'and 10, in which the die-hold- 7o ers 11 and-12 operate, andthe space between thedie -carriers,and through the bushing forming the piston-chamber 13,in WlllOhlihG hammer-piston operates,"said piston having the valve releasin'g port-connecting grooves 7 5 15'and 16 inits periphery. Key-'slotslf are formed in the die-holders, and set-screws 18 are inserted throu gh' the casing in'to saidslots to hold the :die holders from being blown out of theirseats. Springs 19 maybeinserted between the ends of the bushing'and the dieholders to yieldingly press the'dies against the inner face of the boiler-tube; but the springs are not essential, because the'exhaustpressure will-accomplish the same purpose. The dies 20 have peripheral grooves 21 and heads 22, and the dies are driven-into the die-holders from theinside,and then the metal of the die-holders is riveted or hammered into the grooves 21 to hold the dies from rattling or backing out, while the heads 22hold the dies from being driven through the holders. The dies are hard and the holders are soft.

The valve-casing '23 has a transverse bore parallelwith the piston-chamber and forming the valve-chamber 2 1, in which the valve 25 is slidingly mounted, said valve having the pressure-port-connecting

grooves

27 and 28 in its periphery and said valve also having the eXhaust-port-connecting groove 29 in its periphery and also having the

valveshifting ports

30 and 31, connecting the

grooves

27 and 28 to the ends of the valve. The

plugs

32 and 33 close the ends of the valve-chamber, and a steam-supply pipe 34 is tapped into the valve-casing, and there being pressure-ports 35 and 36 leading from the steam-pipe to the valve-casing at points I to connect with the grooves 27 and 528. The

. open air at a point to be in connection with the groove 29, so that as the valve reciprocates the exhaust is released first from one end of the piston and then from the other end, the pressure being admitted to the opposite end from that which is exhausting. The valve-releasing

ports

42 and 43 lead from the ends of the valve' chamber through the valve-casing, then along the face of the piston-casing, then through the piston casing to the piston-chamber to communicate alternately with the

grooves

15 and 16 in the hammer-piston, and the second valve-releasing

ports

44 and 45 lead from the pistonchamber to the open air, so that said

ports

42 and 43 are connected to the

ports

44 and 45 by the

grooves

15 and 16 as the piston reciprocates, thereby releasing the pressure from first one end and then the other end of the valve and reciprocating the valve.

In the practical operation the dies are held against the inner face of the boiler-tube and the hammer-piston reciprocates, striking first one die and then the other and jars the scale off the outer surface of the tube.

The machines are made to accurately fit the boiler-tubes in which they are to be used, allowing-only for a slight movement of the dieholders, and the machines will not operate except in tubes of the proper size, because the die-holders will move and close the ports. In practicaluse one size has been made for four-inch tubes and another size has been made for six-inch tubes. The variation in boiler-tubes is very slight.

I claim 1. A boiler-tube cleaner comprising a piston-casing adapted to slide back and forth in the boiler-tubes and having a transverse bore forming a hammer-piston chamber; the ends of said chamber being enlarged to form dieholder seats a hammer piston slidingly mounted in said chamber; said piston having valve-releasing port-connecting grooves in its periphery;v die-holders slidingly mounted in said die-holder seats, dies carried by said die-holders, a valve-casing attached to the piston-casing and having a transverse bore parallel with the piston-chamber and forming a valve-chamber; a valve slidingly mounted in said valve-chamber and having pressure-port-connecting grooves in its periphery, and having an exhaust-port-connecting groove in its periphery and having valveshifting ports connecting the pressure to each end of the valve, plugs closing the ends of said valve-chamber and a steam-supply pipe connected to said valve-casin g; there being pressure-ports leadin g from the supply-pipe to the valve-chamber; and there being pressureports leading from the valve-chamber to the piston-chamber so thatthe reciprocation of the valve admits pressure first to one end of the valve and then to the other; and there being an exhaust-port so'that the reciprocation of the valve will release the exhaust from one end of the valve, while the pressure is being admitted to the other end, and there being valve-releasing ports leading from said valve-chamber to the piston-chamber and there being second valve-releasing ports leading from the piston-chamber so that the reciprocation of the piston will connect said first and second valve-releasing ports to release the pressure first from one end of the valve and then from the other end, as required to reciprocate the valve.

2. In a boiler-tube cleaner, a suitable frame having a transverse bore forming a hammerpiston chamber, die-holders mounted in the ends of said chamber, a ham mer-piston mounted in said chamber, dies carried by said dieholders, steam-ports leading to said pistonchamber, and an automatic valve for admitting the steam first to one end of the piston and then the other, as required to reciprocate the hammer-piston, and cause it to strike the dies, said dies being held outwardly against the inner surface of the boiler-tube by the steam-pressure.

. GUSTAV O. QUASEBARTH.

Witnesses:

ELLEN WELLS, ODIA M. WELLs.