US166523A - Improvement in slate-frames - Google Patents

Improvement in slate-frames Download PDF

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US166523A
US166523A US166523DA US166523A US 166523 A US166523 A US 166523A US 166523D A US166523D A US 166523DA US 166523 A US166523 A US 166523A
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slate
covering
frames
improvement
frame
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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

Definitions

  • I slates 3 and it consists in covering the frame of the slate with felt, or other suitable material, which covering has a bead formed all the way around the frame, so as to completely deaden the sound made by the slate in coming in contact with the desk or other objects.
  • Figure l is a side elevation of my invention.
  • Fig. 2 is a detail view of the same, showing different-shaped beads.
  • a represents a common school-slate, the frame of which is covered With'a jacket of felt, c, which jacket or covering is provided with a bead, e, of the same material, and of any desired shape or thickness.
  • this covering serves to a considerable extent to deaden the noise made by the striking of the slate against benches and other hard objects,but does not entirely obviate the great noise that is always made in a school-room.
  • the covering is made sufficiently thick to entirely deaden all noise Without making the covering so thick as to be clumsy and bungling.
  • I claim rIlhe slate-frame having a covering, C, of felt or similar material, provided with a bead, e, substantially as shown and described.

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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)
  • Tables And Desks Characterized By Structural Shape (AREA)

Description

UNITED STATES PATENT OFFICE.
JOHN HAGGERTY, OF CORRY, PENNSYLVANIA, ASSIGNOR OF ONE-HALF HI RIGHT TO V. Gr. CURTIS, OF SAME PLACE.
IMPROVEMENT IN SLATE-FRAMES.
Specilication forming part of Letters Patent No. 166,523, dated August 10, 1875 application tiled May 26, 1875.
I slates 3 and it consists in covering the frame of the slate with felt, or other suitable material, which covering has a bead formed all the way around the frame, so as to completely deaden the sound made by the slate in coming in contact with the desk or other objects.
Figure lis a side elevation of my invention. Fig. 2 is a detail view of the same, showing different-shaped beads.
a represents a common school-slate, the frame of which is covered With'a jacket of felt, c, which jacket or covering is provided with a bead, e, of the same material, and of any desired shape or thickness. Where the frame is simply covered with felt or rubber this covering serves to a considerable extent to deaden the noise made by the striking of the slate against benches and other hard objects,but does not entirely obviate the great noise that is always made in a school-room. By making this bead as a part of the covering, the covering is made sufficiently thick to entirely deaden all noise Without making the covering so thick as to be clumsy and bungling.
Having thus described my invention, I claim rIlhe slate-frame having a covering, C, of felt or similar material, provided with a bead, e, substantially as shown and described.
In testimony that I claim the foregoing I have hereunto set my hand this 1st day of May, 1875. A
JOHN HAGGERTY.
Witnesses:
S. A. HoLLIsTER, H. O. LINscoTT.
US166523D Improvement in slate-frames Expired - Lifetime US166523A (en)

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US166523A true US166523A (en) 1875-08-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040120950A1 (en) * 2002-12-20 2004-06-24 Kari Alitalo Modulation of VEGF-C/VEGFR-3 interactions in the treatment of rheumatoid arthritis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040120950A1 (en) * 2002-12-20 2004-06-24 Kari Alitalo Modulation of VEGF-C/VEGFR-3 interactions in the treatment of rheumatoid arthritis

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