US514111A - Samuel abraham and lewis c - Google Patents

Samuel abraham and lewis c Download PDF

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Publication number
US514111A
US514111A US514111DA US514111A US 514111 A US514111 A US 514111A US 514111D A US514111D A US 514111DA US 514111 A US514111 A US 514111A
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United States
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levers
abraham
boss
scraper
handle
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets

Definitions

  • This invention relates to an adjustable rake or scraper designed for cleaning boiler tubes and especially for removing sediment or calcareous deposits therefrom.
  • the circular boss is mounted on one end of a central stem the other end of which is screw-threaded to fitinto a screw-threaded handle having an external conical sleeve or enlarged part against which the pivoted levers are constantly pressed by the action of springs located in the circular boss.
  • the knives or toothed wheels on the free ends of the levers are made to move away from or to move I nearer to, the axis of the scraper thus increasing or reducing at will the diameter of the acting part of the rake or scraper.
  • the scraper can be used for cleaning tubes or pipes of difierent internal diameters and furthermore while cleaning a tube the diameter of the scraper can be increased in proportion as the internal diameter of the tube becomes enlarged in consequence of the removal of the sediment.
  • the knives or toothed wheels carried by the levers can easily be removed and replaced.
  • the boss b is fixed in place on the end of the screw-threaded stem a, which latter is screwed into the handle A of the scraper.
  • the end of the handle Ain which isinserted the screw-threaded stem is furnished with a conical sleeve or with an enlarged part Z which becomes gradually thinner toward the end in which the screw-threaded stem va is insorted.
  • the levers c c are fixed and pivoted in the grooves of the boss 15 by means of pins 21 passing through the heads of the same and the inner ends of the said levers bear against the sleeve or conical part 1 at the end of the handle A.
  • 'A cap 19 maintained in place by a nuts screwed on the end of the central stem at covers the top of the boss and of the head of the levers and is furnished with small internal cavities t, t for the reception of the upper part of the springs which are thus held in place in small chambers formed by the boss, the interior of the cap and the projecting part on the head of the levers.
  • the handle A In order to diminish the diameter of the acting portion of the scraper the handle A is turned in the other direction, that is to say in the direction for unscrewing the same from the central stem at, the sleeve or conical part Z of the handle will then move away from the boss I) and the knives d or toothed wheels 2 of the lovers 0 will be moved nearer to the axis of the scraper by the pressure of the springs boss I) and carrying renewable scrapers, and springs r, located in the boss I) and pressing the levers 0 against the sleeve or enlarged part Z of the handle A as described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Description

s. AA L. 0. ABRAHAM. RAKE 0R SGRAPER FOB CLEANING BOILER TUBES. 110,514,111.
. (No. Model.)
Patented Feb. 6, 1894.
m w M F STATES PATENT OFFICE.
SAMUEL ABRAHAM AND LEWIS C. ABRAHAM, OF BRUSSELS, BELGIUM.
RAKE OR SCRAP ER FOR CLEANING BOILER-TUBES.
SPECIFICATION forming part of Letters Patent No. 514,111, dated February 6, 1894.
Application filed N v m r 80, 1892- Serial No. 453,572. (No model.) Patented in Belgium September 23, 1892, No. 101,492: in France September 23, 1892, No. 224,511, and in England September 24, 1892, No. 17,069.
To all whom it may concern:
the United States, both residing at Brussels,
Belgium, have invented new and useful Improvementsin Rakes or Scrapers for Cleaning Boiler-Tubes, (for which we have applied for patents in Belgium, No. 101,492, bearing date September 23, 1 892; in France, No. 224,511, bearing date September 23, 1892, and in Great Britain, No. 17,069, bearing date September 24, 1892,) of which the following is a specification.
This invention relates to an adjustable rake or scraper designed for cleaning boiler tubes and especially for removing sediment or calcareous deposits therefrom.
It comprises essentially a series of levers pivoted at one end to a circular boss and care rying at their other end small Wheels having teeth. The circular boss is mounted on one end of a central stem the other end of which is screw-threaded to fitinto a screw-threaded handle having an external conical sleeve or enlarged part against which the pivoted levers are constantly pressed by the action of springs located in the circular boss. By simply turning the handle of the scraper in one or the other direction so as to screw it farther on or unscrew it more or less from the central screw-threaded stem, the knives or toothed wheels on the free ends of the levers are made to move away from or to move I nearer to, the axis of the scraper thus increasing or reducing at will the diameter of the acting part of the rake or scraper. By this means the scraper can be used for cleaning tubes or pipes of difierent internal diameters and furthermore while cleaning a tube the diameter of the scraper can be increased in proportion as the internal diameter of the tube becomes enlarged in consequence of the removal of the sediment. The knives or toothed wheels carried by the levers can easily be removed and replaced.
In the accompanying drawingsz-=Figures 1, 2 and 3 show respectively an elevation, a central vertical section and a plan view of our invention.
The boss b is fixed in place on the end of the screw-threaded stem a, which latter is screwed into the handle A of the scraper. The end of the handle Ain which isinserted the screw-threaded stem is furnished with a conical sleeve or with an enlarged part Z which becomes gradually thinner toward the end in which the screw-threaded stem va is insorted. The levers c c are fixed and pivoted in the grooves of the boss 15 by means of pins 21 passing through the heads of the same and the inner ends of the said levers bear against the sleeve or conical part 1 at the end of the handle A.
Atthe top of the head of the levers cthere is a projecting part 'n against the inner face of which there presses the end of a spiral spring 1' located in the upper part of the groove of the boss I). These springs o have a constant tendency to press outwardly that part of the head of the levers situated above their pivot t' and thus press the inner side of the levers against the sleeve or conical part Z of the handle. 'A cap 19 maintained in place by a nuts screwed on the end of the central stem at covers the top of the boss and of the head of the levers and is furnished with small internal cavities t, t for the reception of the upper part of the springs which are thus held in place in small chambers formed by the boss, the interior of the cap and the projecting part on the head of the levers. When the handle A is turned in the requisite direction so as to give it a screwing movement on the screw-threaded central stem (1 the latter penetrates still farther into the handle A, and the sleeve or conical partl moves toward the boss I) and presses outwardly the lower part of the leversc against the action of the springs r of the boss thus moving the knives or toothed wheels 6 of the levers away from the axis of the scraper and increasing the diameter of the acting portion of the scraper.
In order to diminish the diameter of the acting portion of the scraper the handle A is turned in the other direction, that is to say in the direction for unscrewing the same from the central stem at, the sleeve or conical part Z of the handle will then move away from the boss I) and the knives d or toothed wheels 2 of the lovers 0 will be moved nearer to the axis of the scraper by the pressure of the springs boss I) and carrying renewable scrapers, and springs r, located in the boss I) and pressing the levers 0 against the sleeve or enlarged part Z of the handle A as described.
SAMUEL ABRAHAM. LEWIS C. ABRAHAM. Witnesses:
H. N. KIRKPATRICK, T. J. KIRKPATRICK.
US514111D Samuel abraham and lewis c Expired - Lifetime US514111A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489443A (en) * 1946-08-17 1949-11-29 Williams William Wallace Pipe thread cleaning tool
US3680167A (en) * 1970-05-22 1972-08-01 John M Rogers Screw thread cleaning apparatus
US4159149A (en) * 1977-03-18 1979-06-26 Castanoli Alder F Coal mining auger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489443A (en) * 1946-08-17 1949-11-29 Williams William Wallace Pipe thread cleaning tool
US3680167A (en) * 1970-05-22 1972-08-01 John M Rogers Screw thread cleaning apparatus
US4159149A (en) * 1977-03-18 1979-06-26 Castanoli Alder F Coal mining auger

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