US294154A - Joseph bidge - Google Patents

Joseph bidge Download PDF

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US294154A
US294154A US294154DA US294154A US 294154 A US294154 A US 294154A US 294154D A US294154D A US 294154DA US 294154 A US294154 A US 294154A
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strip
frame
joseph
slate
bidge
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/76—Making of isolation regions between components
    • H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
    • H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
    • H01L21/76229—Concurrent filling of a plurality of trenches having a different trench shape or dimension, e.g. rectangular and V-shaped trenches, wide and narrow trenches, shallow and deep trenches

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  • My invention relates to a radical change in Heretofore it has been the custom to rely upon softarticles-such as rubber or a textile material-in which the eompressible nature of the material itself affords the properties that serve to deaden the sound.
  • softarticles such as rubber or a textile material-in which the eompressible nature of the material itself affords the properties that serve to deaden the sound.
  • the objection to such material is the cost and'lack of durability.
  • a spring-that is, ahard substance whose ilexible elasticity relieves the solid and noise-producing contact of an unmufiled slate.
  • the material employed is strips of rattan, or, rather, what is known as cane, being the same as used in the manufacture of chairs and other furniture, which is, perhaps, less expensive, considering its qualities, than anything else, though wire or a wooden or metallic splint or ribbon can be used.
  • Figure 1 is a side view of a section of a slate with my improvement attached.
  • Fig. 2 is an edge view of the same.
  • Fig. 3 represents a section of slate with the strip modification attached, and
  • Fig. 4 is a transverse section of Fig. 3.
  • A represents the slate proper, and a the slate-frame.
  • A is the muflling-spring.
  • A2 represents the strip used in the modified form; a, the lacingstrip for same.
  • the frame a is perforated at intervals throughout its length,through which the strip A is spirally laced in such manner as to bow over the edge of the frame-that is, stand out from the frame.
  • the strip is returned, and the same process repeated in the opposite direction, which latter adds to the effectiveness and appearance of the muffler, the perforations in thefralne being ofsuflicient size to readily admit the two strips.
  • the border piece or strip A2 has a width sufficiently greater than the thickness of frame a to project on each side of the latter.
  • Strip A2 is perforated, as shown, through which the strip of cane, a, is inserted, for the purpose of securing said strip A2 to the slate-frame.
  • the latter is perforated, as in Fig. l, through which the strip a is laced, successively,with the perforation in strip A, thus securing the latter to frame a.
  • Sufcient play is allowed between frame a and strip A2 to admit of the required ilexibility.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Building Environments (AREA)

Description

(No Model.)
J. RIDGE.
Y MUPPLEB, FOR SCHOOL SLATVES'. No. 294,154'. r Patented Feb. '26, 1884` g.) @yimg the material used for Inuiiling slates.
UNITED STA-TES PATENT OFFICE JOsErH RIDGE, OE OHIOAGO, ILLINOIS, AssIGNOE To JOHnT H. BEEEs, or
' sAME PLAGE.
MUFFLER FOR SCHOOL-SLATES.
SPECIFICATION forming part of Letters Fatent No. 294,154, dated February 26, 1884.
' i Application I'iled November 5, 1883. (No model.)
To all whom t may concern,.-
Be it known that I, JOSEPH RIDGE, of Chicago, county of Cook, and State OfIllinois,have invented new and useful Improvements in Mufflers for Sehool-Slates, of which the following is a full and complete description, reference being had to the accompanying drawings.
My invention relates to a radical change in Heretofore it has been the custom to rely upon softarticles-such as rubber or a textile material-in which the eompressible nature of the material itself affords the properties that serve to deaden the sound. The objection to such material is the cost and'lack of durability.
To obviate these obj ections I have substitutedV a spring-that is, ahard substance whose ilexible elasticity relieves the solid and noise-producing contact of an unmufiled slate. In' the present example the material employed is strips of rattan, or, rather, what is known as cane, being the same as used in the manufacture of chairs and other furniture, which is, perhaps, less expensive, considering its qualities, than anything else, though wire or a wooden or metallic splint or ribbon can be used. I also show in the drawings a modification ofwhat I considerv the preferable plan or" mnflling, in which a wooden strip is laced to theouter edge of the slate-frame in such a manner as to establish a flexible connection between the latter and said strip, in which I have used the cane as a lacing material,though a textile cord or other fabric may serve the saine purpose.
In the drawings, Figure 1 is a side view of a section of a slate with my improvement attached. Fig. 2 is an edge view of the same. Fig. 3 represents a section of slate with the strip modification attached, and Fig. 4 is a transverse section of Fig. 3.
A represents the slate proper, and a the slate-frame. l
A is the muflling-spring.
A2 represents the strip used in the modified form; a, the lacingstrip for same.
The frame a is perforated at intervals throughout its length,through which the strip A is spirally laced in such manner as to bow over the edge of the frame-that is, stand out from the frame. In this example the strip is returned, and the same process repeated in the opposite direction, which latter adds to the effectiveness and appearance of the muffler, the perforations in thefralne being ofsuflicient size to readily admit the two strips. The bows formed over the edge of the frame, in consequence of the spring-y nature of strips A, serve to produce the desired result as a mufiler. The border piece or strip A2 has a width sufficiently greater than the thickness of frame a to project on each side of the latter. Strip A2 is perforated, as shown, through which the strip of cane, a, is inserted, for the purpose of securing said strip A2 to the slate-frame. The latter is perforated, as in Fig. l, through which the strip a is laced, successively,with the perforation in strip A, thus securing the latter to frame a. Sufcient play is allowed between frame a and strip A2 to admit of the required ilexibility. y
Having thus fully described my said invention, what I claim, and desire to secure by Letters Patent, is
In combination with slate A and frame a, the ilexibly elastic springmufller, substantially as described, and for the purpose specified.
JOSEPH RIDGE.
Witnesses:
L. C. STRAIGHT, CHARLEs O. HENTHORN.
US294154D Joseph bidge Expired - Lifetime US294154A (en)

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