US731551A - Bell. - Google Patents
Bell. Download PDFInfo
- Publication number
- US731551A US731551A US8001201A US1901080012A US731551A US 731551 A US731551 A US 731551A US 8001201 A US8001201 A US 8001201A US 1901080012 A US1901080012 A US 1901080012A US 731551 A US731551 A US 731551A
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- US
- United States
- Prior art keywords
- bell
- thickness
- metal
- steel
- upper portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K3/00—Rattles or like noise-producing devices, e.g. door-knockers
Definitions
- My invention relates to an improvement in bells; and it consists in a bell made from a single disk of steel with walls of varying thickness.
- a good bell The requisites of a good bell are that it shall be so formed as to give out a sonorous and musical sound, the former relating to the volume and character and the latter to the purity of the sound.
- My invention is designed more particularly to secure purity in the sound by making bells uniform in density and thickness in corresponding portions of metal of uniform hardness and elasticity.
- Figure 1 is a side elevation, partially in section, of a bell constructed in accordance with my invention.
- Fig. 2 is a top plan View of the same.
- a disk of steel of suitable thickcluded in the space marked 1 is shown. as retaining the original thickness of the steel disk, the action of the dies merely bending or dishing the metal at this portion.
- the next section of the hell, included in the space marked 2 is of less thickness than the original plate, the dies being so formed as to suitably bend the metal and at the same time stretch it and reduce its thickness.
- the space marked 3 included in the space marked 3, is of greater thickness than the original plate, the dies being so constructed as to stave the metal or increase its thickness at this point.
- the bottom portion of the bell, included in the space marked 4 has the greatest thickness, the dies operating in shaping this section to stave the metal about the periphery of the bell.
- I claim- 1 As a new article of manufacture, a pressed-steel bell having the upper portion of its sides of one thickness of metal, its lower or peripheral portion of a greater thickness than the upper portion, and an intermediate portion of less thickness than the upperportion; substantially as described.
- a pressed-steel bell having the upper portion of its sides of one thickness of metal, its lower or peripheral portion of a greater thickness fixed my signature in the presence of two subthan the upper portion, a portion adjoining scribing witnesses. the upper portion less in thickness than said I JOHN T DUFF upper portion, and a portion adjoining the 5 lower-portion of less thickness than said lower Witnesses:
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
PATENTBD JUNE 2a. 1903.
J. T. DUFF.
BELL.
APPLIOATION npnn 0OT.25, 1901.
N0 MODEL.
\ INVENTOR XVQM J. 09%
M Attorney UNITED STATES Patented June 23, 1903.
A JOHN T. DUFF, OF ALLEGHENY, PENNSYLVANIA.
BELL.
SPECIFICATION forming part of Letters Patent No. 731,551, dated June 23, 1903.
' Application filed October 25,1901. Serial No. 80,012. (No model.)
To all whom it may concern.-
Be it known that 1, JOHN T. DUFF, a citizen of the United States of America, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Bells; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being bad to the accompanying drawings, which form a part of this specification.
My invention relates to an improvement in bells; and it consists in a bell made from a single disk of steel with walls of varying thickness.
The requisites of a good bell are that it shall be so formed as to give out a sonorous and musical sound, the former relating to the volume and character and the latter to the purity of the sound.
My invention is designed more particularly to secure purity in the sound by making bells uniform in density and thickness in corresponding portions of metal of uniform hardness and elasticity. To obtain these results by the usual process of casting has been found diflicult, and even in the hands of the most skilled workmen the casting of a bell is subject to so many contingencies that the purity of the tone of the bell, as well as its character and volume, is ordinarily a matter of chance, and consequently the production of a set of chime-bells becomes by such ordinary casting process a matter of no little trouble and expense. To obviate these difficulties and to bring the conditions on which the tone of a bell depends within the intelligent control of the workman and to reduce the cost thereof,I have invented a seamless bell formed from a single sheet of steel with walls of varying thickness.
I shall now describe my invention by reference to the accompanying drawings, forming part of this specification, in which Figure 1 is a side elevation, partially in section, of a bell constructed in accordance with my invention. Fig. 2 is a top plan View of the same.
In constructing a bell according to my invention I take a disk of steel of suitable thickcluded in the space marked 1, is shown. as retaining the original thickness of the steel disk, the action of the dies merely bending or dishing the metal at this portion. The next section of the hell, included in the space marked 2, is of less thickness than the original plate, the dies being so formed as to suitably bend the metal and at the same time stretch it and reduce its thickness. The next portion of the bell immediately below, and
included in the space marked 3, is of greater thickness than the original plate, the dies being so constructed as to stave the metal or increase its thickness at this point. The bottom portion of the bell, included in the space marked 4, has the greatest thickness, the dies operating in shaping this section to stave the metal about the periphery of the bell.
By constructing a bell after the manner just described it will be found that a better tone and a larger volume and prolonging of the soundare obtained. The reduced thickness of the metal of the section 2 permits the heavy body of metal below it to vibrate freely, prolonging the sound and increasing its volume, and the uniformity in thickness in corresponding portions of the bell render the tone clearer than in cast-metal bells.
I claim- 1. As a new article of manufacture, a pressed-steel bell having the upper portion of its sides of one thickness of metal, its lower or peripheral portion of a greater thickness than the upper portion, and an intermediate portion of less thickness than the upperportion; substantially as described.
2. As a new article of manufacture, a pressed-steel bell having the upper portion of its sides of one thickness of metal, its lower or peripheral portion of a greater thickness fixed my signature in the presence of two subthan the upper portion, a portion adjoining scribing witnesses. the upper portion less in thickness than said I JOHN T DUFF upper portion, and a portion adjoining the 5 lower-portion of less thickness than said lower Witnesses:
portion; substantially as described. C. 0. LEE,
0. D. LEvIs.
In testimony whereof I have hereunto af-
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8001201A US731551A (en) | 1901-10-25 | 1901-10-25 | Bell. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8001201A US731551A (en) | 1901-10-25 | 1901-10-25 | Bell. |
Publications (1)
Publication Number | Publication Date |
---|---|
US731551A true US731551A (en) | 1903-06-23 |
Family
ID=2800058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US8001201A Expired - Lifetime US731551A (en) | 1901-10-25 | 1901-10-25 | Bell. |
Country Status (1)
Country | Link |
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US (1) | US731551A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683845A (en) * | 1969-03-28 | 1972-08-15 | V & E Friedland Ltd | Domes for electric bells |
US20090049913A1 (en) * | 2007-08-20 | 2009-02-26 | Seoul National University Industry Foundation | Method of beat tuning in a slightly asymmetric ring-type structure |
-
1901
- 1901-10-25 US US8001201A patent/US731551A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683845A (en) * | 1969-03-28 | 1972-08-15 | V & E Friedland Ltd | Domes for electric bells |
US20090049913A1 (en) * | 2007-08-20 | 2009-02-26 | Seoul National University Industry Foundation | Method of beat tuning in a slightly asymmetric ring-type structure |
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