US2562899A - Pneumatic deck scaling machine - Google Patents

Pneumatic deck scaling machine Download PDF

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US2562899A
US2562899A US689133A US68913346A US2562899A US 2562899 A US2562899 A US 2562899A US 689133 A US689133 A US 689133A US 68913346 A US68913346 A US 68913346A US 2562899 A US2562899 A US 2562899A
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machine
pneumatic
chippers
cylinders
chipping
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US689133A
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Daniel J Finn
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/45—Scale remover or preventor
    • Y10T29/4572—Mechanically powered operator
    • Y10T29/4589—Blade or chisel

Definitions

  • the present invention relates to apparatus, for removing scale .from steel decks and thelike.
  • the primary object of'the present invention is to provide an improved scaling machine.
  • a further object of the present invention is to provide. a scaling machine which will speed up the scaling process.
  • Another object is to provide a machine which will perform a uniform scaling operation on steel decks and the like.
  • a still further object is to provide a machine for scaling steel decks and the like in operation of which the operator of the machine will be protected from the scale being chipped.
  • the vehicle on which the air hammers are carried comprises essentially a rectangular frame 20, Fig. 1 and Fig. 2, preferably fabricated from angle iron, and four wheels .21 attached to aXles 22 to support frame 20 substantially as shown.
  • a handle 23, preferably of tubular stock, is rigidly attached at the rear of frame 2!] and extends backward and upward to such a height that the vehicle can be conveniently pushed by an operator when in a standing position.
  • Attached to frame 20 and disposed so as to be parallel to axles -22 are two plate members 24 and 25 spaced substantially as shown. Plates 24 and 25 have holes cut through them to engage the lower end of the cylinder 10 of the pneumatic chippers.
  • the machine herein described comprises essentially a movable vehicle upon which aremounted a plurality of pneumatic chippers, the chippers being so disposed on the vehicle that a, strip of surface substantially the width of the vehicle is scaled as the vehicle is pushedalong.
  • Plate 25 has four holes symmetrically disposed with respect to its ends and spaced similarly as the holes in plate 24.
  • the holes are of such shape and size that they engage snugly the chiselend ofcylinder II), which has flattened sides for a short way 'up'the walls of the cylinder.
  • the shoulder which .is formed-by the transition from the flat sides to a full cylinder rests on the tops of plate 24 and 25 and thus supports the chippers and prevents rotation of the cylinders.
  • the shape of the lower end of cylinder l'll'is clearly shown
  • the chippers are mounted in the plates such that the blades of chisels 13 are normalto the axis of motion of the machine.
  • of thevehicle are of such diameter that chisels l3 contact the deck with sufficient pressure to, perform the chipping operation when air is applied to the chippers.
  • the present embodiment shows a machine with seven. chippers installed, but it is apparent that any desired, number may be used so long as they are, spaced to insure complete coverage of the area beneath the machine as it is pushed along.
  • Plates 26 and 21 with holes spaced identically with the holes of plates 24 and 25, respectively, engage the cylinder heads of the shippers to maintain them in vertical alignment.
  • the holes in plates 26 and 21 are countersunk to fit the conical portion of cylinder head ll of the chipper. A slight vertical movement of the cylinders 10,
  • extension springs 30 which are secured between upper plates 26 and 21 and lower plates 24 and 25 by stub bolts 28 and nuts 29. cient to maintain vertical alignment of cylinders [0, guide bolts may be used between the upper and lower plates to add rigidity to the system.
  • a manifold 34 which is essentially a large pipe closed at both ends, or similar cylinder, is mounted on plate 35, which in turn is supported by frame 20, with its axis normal to the axis of motion of the machine.
  • Seven stub pipes 36 symmetrically disposed with respect to 'the ends of manifold 34 and equally spaced are inserted through the walls of manifold 34.
  • Each of stub pipes 36 are connected by flexible hoses 33 to its respective stub pipe 3
  • Another flexible hose 37 is connected to one end of the manifold by suitable plumbing 38 and extends along handle 23 to a throttle valve 39 attached to handle 23 in convenient reach of the operator.
  • Supply hose 40 which enters the throttle valve is connected to a supply of compressed air of pressure suitable for operation of the type of air hammers used, and should be of suflicient length to allow free movement of the machine about the deck or surface being worked upon.
  • compressed air enters the manifold 34 through hose 37 when throttle valve 39 is opened. Since there is a free air passage from the manifold to the actuating cylinders of the air hammers, all the hammers will start to operate immediately upon opening of throttle valve 39. The machine is pushed along at a suitable rate over the surface to be chipped.
  • the machine can be moved rather rapidly and still insure a clean chipping job;
  • the chisels of the back row are staggered with respect to the front row, whereby a strip of a width defined by the spacing of the back row of chisels will be scaled as the machine is pushed forward over the surface to be scaled.
  • the vehicle frame,- the manifold and associated tubing as a protective shield together with the distance the operator is from the actual chipping chisels prevents the scale and dust chipped loose from causing injurious effects to the operator.
  • the machine can be further improved by placing a sheet metal hood over the entire chipping mechanism, whereby all chips and dust are prevented Should the tension of springs 30 be insuffi from blowing around above the machine where Conceivably, too,
  • a machine for scaling steel decks and the like comprising, in combination, a, rectangular frame structure, a pair of axles respectively secured to said frame structure along two opposite edges thereof, four wheels journalled on said axles and disposed outside the area enclosed by said frame structure, first and second plate members mounted in said frame parallel to said axles, said plate members being spaced from each other in a direction normal to the axes of said faxles, a plurality of pneumatic chipping tools each including a' cylinder with a chisel extending from one end thereof, each of said cylinders having a flattened side extending a short distance along the length thereof from the chisel end, said first plate member having an odd number of openings formed therein of a shape conforming to the chisel end of said cylinders symmetrically located with respect to the ends of said first plate member and evenly spaced between centers a distance substantially equal to twice the width of said chisels for accepting a like odd number of said cylinders and maintaining said cylinders in a

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Description

Aug. 7, 1951 D. J. FINN PNEUMATIC DECK SCALING MACHINE 2 Sheets-Sheet 1 Filed Aug. 8, 1946 FIG.I
INVENTOR DANIEL J. FINN ATTOR NEY Aug. 7, 1951 D, J, FlNN 2,562,899
PNEUMATIC DECK SCALING MACHINE Filed Aug. 8, 1946 I 2 Sheets-Sheet 2 INVENTOR DANIEL J. FINN W BY ATTORNEY Patented Aug. 7, 1951 UNITED STAT ES PAT ENT FF I CE PNEUMATIC DECK SCALING MACHINE Daniel J. Finn, Everett, Mass.
- Application August 8, 1946, SerialNo. 689,133
(Granted under the act of, Marchv 33,1883, as
amended. April. 30, 1928;. 370 O. G 757) 1 Claim.
The present invention relates to apparatus, for removing scale .from steel decks and thelike.
Preparatory to applying new paint or-preservative to steel decks of ships, oil tanks, and the like, it is necessary to remove the .old paint and scale which has accumulated from corrosion. Heretofore, this scale has been chipped loose by the. use of either hand actuated chipping hammers or scrapers. or small pneumatic chippers held in; the hand of an operator. The task of cleaning large areas by'this method is very slow and tedious, besides bein injuriousto the respiratory system of the operator in view of the necessary proximity of the operator tothe flying scale which .is chipped. .loose. The use of pneumatic air hammers also results in uneven chipping, due to varying pressure applied to the hammer by different operators. Even after, chipping is completed by this method additional bufiing and fin ishing is required before paint can be applied to the surface.
Accordingly, the primary object of'the present invention is to provide an improved scaling machine.
A further object of the present invention is to provide. a scaling machine which will speed up the scaling process.
Another object is to provide a machine which will perform a uniform scaling operation on steel decks and the like.
A still further object is to provide a machine for scaling steel decks and the like in operation of which the operator of the machine will be protected from the scale being chipped.
Theforegoing and other objects of the present invention will be apparent from the detailed del5, and associated. springs and pins for actuation of the throttle valve are necessary, but in the present application of the chipper the throttle valve and its actuating means are removed to allow operation of the hammer as soon as compressed air is applied through the cylinder head at point IS. The operation of the chipper is familiar to those versed in the art so a discussion of its operation is not considered necessary here. The chisel l3 can: be removedfrom the hammer when it becomes worn, thus providing ease in servicing the present machine.
The vehicle on which the air hammers are carried comprises essentially a rectangular frame 20, Fig. 1 and Fig. 2, preferably fabricated from angle iron, and four wheels .21 attached to aXles 22 to support frame 20 substantially as shown. A handle 23, preferably of tubular stock, is rigidly attached at the rear of frame 2!] and extends backward and upward to such a height that the vehicle can be conveniently pushed by an operator when in a standing position. Attached to frame 20 and disposed so as to be parallel to axles -22 are two plate members 24 and 25 spaced substantially as shown. Plates 24 and 25 have holes cut through them to engage the lower end of the cylinder 10 of the pneumatic chippers. In
width of the blades of chisel l3 of the pneumatic scription when taken with the accompanying The machine herein described comprises essentially a movable vehicle upon which aremounted a plurality of pneumatic chippers, the chippers being so disposed on the vehicle that a, strip of surface substantially the width of the vehicle is scaled as the vehicle is pushedalong.
chipper. Plate 25 has four holes symmetrically disposed with respect to its ends and spaced similarly as the holes in plate 24. The holes are of such shape and size that they engage snugly the chiselend ofcylinder II), which has flattened sides for a short way 'up'the walls of the cylinder. The shoulder which .is formed-by the transition from the flat sides to a full cylinder rests on the tops of plate 24 and 25 and thus supports the chippers and prevents rotation of the cylinders. The shape of the lower end of cylinder l'll'is clearly shown The chipping hammers used in the present. in- I in Fig. 2. The chippers are mounted in the plates such that the blades of chisels 13 are normalto the axis of motion of the machine. It is apparent that as the machine is pushed over the deck, the chisels extending from plate 25 engage the area missed by the chisels in plate 24. The wheels 2| of thevehicle, of course are of such diameter that chisels l3 contact the deck with sufficient pressure to, perform the chipping operation when air is applied to the chippers. The present embodiment shows a machine with seven. chippers installed, but it is apparent that any desired, number may be used so long as they are, spaced to insure complete coverage of the area beneath the machine as it is pushed along.
Plates 26 and 21 with holes spaced identically with the holes of plates 24 and 25, respectively, engage the cylinder heads of the shippers to maintain them in vertical alignment. The holes in plates 26 and 21 are countersunk to fit the conical portion of cylinder head ll of the chipper. A slight vertical movement of the cylinders 10,
While the chippers are in operation, is allowed by the extension of four extension springs 30, which are secured between upper plates 26 and 21 and lower plates 24 and 25 by stub bolts 28 and nuts 29. cient to maintain vertical alignment of cylinders [0, guide bolts may be used between the upper and lower plates to add rigidity to the system.
At point it of the chippers (Fig. 3) are inserted stub pipes 3! to which are attached by suitable coupling means 32 flexible tubes 33. A manifold 34 which is essentially a large pipe closed at both ends, or similar cylinder, is mounted on plate 35, which in turn is supported by frame 20, with its axis normal to the axis of motion of the machine. Seven stub pipes 36 symmetrically disposed with respect to 'the ends of manifold 34 and equally spaced are inserted through the walls of manifold 34. Each of stub pipes 36 are connected by flexible hoses 33 to its respective stub pipe 3| to provide a free passage for air from the manifold 34 to the piston ll (Fig. 3) of the pneumatic chipper. Another flexible hose 37 is connected to one end of the manifold by suitable plumbing 38 and extends along handle 23 to a throttle valve 39 attached to handle 23 in convenient reach of the operator. Supply hose 40 which enters the throttle valve is connected to a supply of compressed air of pressure suitable for operation of the type of air hammers used, and should be of suflicient length to allow free movement of the machine about the deck or surface being worked upon.
In operation, compressed air enters the manifold 34 through hose 37 when throttle valve 39 is opened. Since there is a free air passage from the manifold to the actuating cylinders of the air hammers, all the hammers will start to operate immediately upon opening of throttle valve 39. The machine is pushed along at a suitable rate over the surface to be chipped. Since the chippers have a repitition rate of approximately 8000 strokes per minutes, it is obvious that the machine can be moved rather rapidly and still insure a clean chipping job; As was previously discussed, the chisels of the back row are staggered with respect to the front row, whereby a strip of a width defined by the spacing of the back row of chisels will be scaled as the machine is pushed forward over the surface to be scaled. The vehicle frame,- the manifold and associated tubing as a protective shield together with the distance the operator is from the actual chipping chisels prevents the scale and dust chipped loose from causing injurious effects to the operator. In this connection, the machine can be further improved by placing a sheet metal hood over the entire chipping mechanism, whereby all chips and dust are prevented Should the tension of springs 30 be insuffi from blowing around above the machine where Conceivably, too,
4 can be picked up immediately after it is loosened from the deck. Accordingly, the foregoing description should not be construed as a definition of the invention, but merely illustrative of one form the invention may take. The spirit and scope of the invention are to be limited only by the appended claim.
The invention described herein may be manufactured and .used by or for the Government of the United States of America for governmental purposes without the payment of any royalty thereon or therefor.
What is claimed is:
A machine for scaling steel decks and the like comprising, in combination, a, rectangular frame structure, a pair of axles respectively secured to said frame structure along two opposite edges thereof, four wheels journalled on said axles and disposed outside the area enclosed by said frame structure, first and second plate members mounted in said frame parallel to said axles, said plate members being spaced from each other in a direction normal to the axes of said faxles, a plurality of pneumatic chipping tools each including a' cylinder with a chisel extending from one end thereof, each of said cylinders having a flattened side extending a short distance along the length thereof from the chisel end, said first plate member having an odd number of openings formed therein of a shape conforming to the chisel end of said cylinders symmetrically located with respect to the ends of said first plate member and evenly spaced between centers a distance substantially equal to twice the width of said chisels for accepting a like odd number of said cylinders and maintaining said cylinders in a vertical position, the cutting edges of said chisels thereby being disposed parallel to the said axles and said cylinders constrained from rotation, said second platemember having an even number of similar openings therein symmetrically located with respect to the ends thereof and spaced between centers a distance equal to the spacing between the openings in said first plate for receiving and supporting a like even number of said cylinders, first and second retaining plates mounted to engage the unsupported ends of the cylinder -respectively supported b said first and second plate members, and air distribution means mounted on said frame arranged to simultaneously apply compressed air to each of said chipping tools,
DANIEL J. FINN.
REFERENCES CITED The following references are of record in the file of this patent:
v UNITED STATES PATENTS Number Name Date 520,085 Shuart May 22, 1894 596,781 Lanz Jan. 4, 1898 681,715 Layne Sept. 3, 1901 1,585,740 Saulia May 25, 1926 1,657,779 Bly Jan. 31, 1928 1,663,965 Aikele Mar. 27, 1928 1,745,100 Johnson et a1 Jan. 28, 1930 2,136,315 Pettit Nov. 8, 1938 2,263,595 Sinkko June 9, 1939 2,245,544 Miller June 10, 1941 2,421,231 Allen May 27, 1947 FOREIGN PATENTS Number Country Date 118,184 Great Britain Aug. 22, 1918
US689133A 1946-08-08 1946-08-08 Pneumatic deck scaling machine Expired - Lifetime US2562899A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718804A (en) * 1952-10-30 1955-09-27 Fred E Dannheim Power-operated reciprocatory impact tool
US2924871A (en) * 1956-10-29 1960-02-16 Jack H Brown Impact tool with magnetic base
US3023485A (en) * 1958-05-16 1962-03-06 Barthod Edouard Scouring apparatus
US3067487A (en) * 1960-06-22 1962-12-11 Vindum Kristian Rust removing apparatus
US3366420A (en) * 1965-02-25 1968-01-30 Macdonald Pneumatics Multi-tool scabbling unit
US3451849A (en) * 1964-09-09 1969-06-24 Zdzislaw Unterschuetz Method of and apparatus for the descaling of metals
WO1980002704A1 (en) * 1979-06-07 1980-12-11 Joad Eng Ltd Scabblers
US4309126A (en) * 1980-04-17 1982-01-05 Pfaff Deems M Machine for separating concrete from steel
EP0074234A2 (en) * 1981-09-02 1983-03-16 John Macdonald & Company (Pneumatic Tools) Limited Improvements in scabbling apparatus
US4778014A (en) * 1985-05-20 1988-10-18 Vent-A-Deck Ventilating means
EP0339308A1 (en) * 1988-04-27 1989-11-02 SF-Kooperation GmbH Beton-Konzepte Method and device for the artificial aging of concrete blocks, and an artificially aged concrete block
US4940289A (en) * 1988-06-01 1990-07-10 Trovato Stephen A Scabbler for scabbling floors contaminated with hazardous materials
US4947532A (en) * 1988-12-19 1990-08-14 Tucker Edward L Scaler holder
US5095600A (en) * 1989-04-01 1992-03-17 Allan David T Paving breakers and supports therefor
US20030222496A1 (en) * 2002-03-21 2003-12-04 Broom Gilbert R. Method and apparatus for breaking up solid objects
US20040195008A1 (en) * 2003-03-03 2004-10-07 Broom Gilbert R. Method and apparatus for tapping a blast furnace
US20050098355A1 (en) * 2003-03-03 2005-05-12 Broom Gilbert R. Method and apparatus for boring through a solid material

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US520085A (en) * 1894-05-22 Scraper
US596781A (en) * 1898-01-04 Pneumatic tool
US681715A (en) * 1899-02-25 1901-09-03 Mahlon E Layne Machine for tamping concrete.
GB118184A (en) * 1917-10-09 1918-08-22 Thomas Turner Peak Improved Tool Holder.
US1585740A (en) * 1924-05-22 1926-05-25 Saulia Charles Pneumatic tool
US1657779A (en) * 1926-05-25 1928-01-31 Standard Oil Co California Pneumatic pipe-cleaning machine
US1663965A (en) * 1928-03-27 Eoad dbagk
US1745100A (en) * 1928-10-25 1930-01-28 Frank E Johnston Roughening machine
US2136315A (en) * 1936-11-04 1938-11-08 Pettit Walter Richard Machine for breaking concrete
US2245544A (en) * 1938-11-18 1941-06-10 Perry E Miller Spudding machine
US2263595A (en) * 1939-06-09 1941-11-25 Frederick G Clover Impact tool
US2421231A (en) * 1945-02-15 1947-05-27 Walter F Allen Chipping apparatus

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US520085A (en) * 1894-05-22 Scraper
US596781A (en) * 1898-01-04 Pneumatic tool
US1663965A (en) * 1928-03-27 Eoad dbagk
US681715A (en) * 1899-02-25 1901-09-03 Mahlon E Layne Machine for tamping concrete.
GB118184A (en) * 1917-10-09 1918-08-22 Thomas Turner Peak Improved Tool Holder.
US1585740A (en) * 1924-05-22 1926-05-25 Saulia Charles Pneumatic tool
US1657779A (en) * 1926-05-25 1928-01-31 Standard Oil Co California Pneumatic pipe-cleaning machine
US1745100A (en) * 1928-10-25 1930-01-28 Frank E Johnston Roughening machine
US2136315A (en) * 1936-11-04 1938-11-08 Pettit Walter Richard Machine for breaking concrete
US2245544A (en) * 1938-11-18 1941-06-10 Perry E Miller Spudding machine
US2263595A (en) * 1939-06-09 1941-11-25 Frederick G Clover Impact tool
US2421231A (en) * 1945-02-15 1947-05-27 Walter F Allen Chipping apparatus

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718804A (en) * 1952-10-30 1955-09-27 Fred E Dannheim Power-operated reciprocatory impact tool
US2924871A (en) * 1956-10-29 1960-02-16 Jack H Brown Impact tool with magnetic base
US3023485A (en) * 1958-05-16 1962-03-06 Barthod Edouard Scouring apparatus
US3067487A (en) * 1960-06-22 1962-12-11 Vindum Kristian Rust removing apparatus
US3451849A (en) * 1964-09-09 1969-06-24 Zdzislaw Unterschuetz Method of and apparatus for the descaling of metals
US3366420A (en) * 1965-02-25 1968-01-30 Macdonald Pneumatics Multi-tool scabbling unit
WO1980002704A1 (en) * 1979-06-07 1980-12-11 Joad Eng Ltd Scabblers
US4309126A (en) * 1980-04-17 1982-01-05 Pfaff Deems M Machine for separating concrete from steel
EP0074234A2 (en) * 1981-09-02 1983-03-16 John Macdonald & Company (Pneumatic Tools) Limited Improvements in scabbling apparatus
EP0074234A3 (en) * 1981-09-02 1983-10-26 John Macdonald & Company (Pneumatic Tools) Limited Improvements in scabbling apparatus
US4778014A (en) * 1985-05-20 1988-10-18 Vent-A-Deck Ventilating means
EP0339308A1 (en) * 1988-04-27 1989-11-02 SF-Kooperation GmbH Beton-Konzepte Method and device for the artificial aging of concrete blocks, and an artificially aged concrete block
US4940289A (en) * 1988-06-01 1990-07-10 Trovato Stephen A Scabbler for scabbling floors contaminated with hazardous materials
US4947532A (en) * 1988-12-19 1990-08-14 Tucker Edward L Scaler holder
US5095600A (en) * 1989-04-01 1992-03-17 Allan David T Paving breakers and supports therefor
US20030222496A1 (en) * 2002-03-21 2003-12-04 Broom Gilbert R. Method and apparatus for breaking up solid objects
US6938961B2 (en) 2002-03-21 2005-09-06 Cutting Edge Technologies, Llc Apparatus for breaking up solid objects
US20040195008A1 (en) * 2003-03-03 2004-10-07 Broom Gilbert R. Method and apparatus for tapping a blast furnace
US20050098355A1 (en) * 2003-03-03 2005-05-12 Broom Gilbert R. Method and apparatus for boring through a solid material

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