US192471A - Improvement in bars for jails, prisons - Google Patents
Improvement in bars for jails, prisons Download PDFInfo
- Publication number
- US192471A US192471A US192471DA US192471A US 192471 A US192471 A US 192471A US 192471D A US192471D A US 192471DA US 192471 A US192471 A US 192471A
- Authority
- US
- United States
- Prior art keywords
- bars
- prisons
- improvement
- jails
- tolan
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- JRXXLCKWQFKACW-UHFFFAOYSA-N biphenylacetylene Chemical compound C1=CC=CC=C1C#CC1=CC=CC=C1 JRXXLCKWQFKACW-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/01—Grilles fixed to walls, doors, or windows; Grilles moving with doors or windows; Walls formed as grilles, e.g. claustra
Definitions
- V is a cross-section of one of my improvedprison-bars.
- the iron is made hard upon its outside, so that it cannot be filed or sawn, while its interior, being in the natural state, will be tough, so that it cannot be broken, and will thus afford a better protection against the efforts of prisoners to escape, and the efforts of their friends to liberate them, than the bars, rods, and plates heretofore made.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Reinforcement Elements For Buildings (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
T. J'. TOLAN.
BARS FOR TAILS, PRISONS, 80C.
Patented June 26,1877.
ATTORNEY.
N.PE\ERS, FHQTWLITHDGRAPHER, WASHINGTON. D C,
UNITED STATES THOMAS J. TOLAN, OF FORT W'AYNE, INDIANA.
IMPROVEMENT IN BARS FOR JAlLS, PRISONS, &c.
Specification forming part of Letters Patent No. 192,471, dated June 26, 1877; application filed March 19, 1877.
To all whom it may concern:
Be it known that I, THOMAS J. TOLAN, of-
Fort Wayne, in the county of Allen and State of Indiana, have invented a new and useful Improvement in Bars for Jails, Prisons, 850., of which the following is a specification:
The figure is a cross-section of one of my improvedprison-bars. V
The object of this invention is to furnish bars, rods, and plates for jail and prison purposes, which shall be hard upon the outside, so that they cannot be filed or sawn, and at the same time tough so that they cannot be broken.
The invention consists in bars, rods, and plates for jail and prison purposes, made of iron carbonized upon the outer surface, and in its natural state in the interior, as hereinafter fully described.
The iron in the shape of bars, rods, and plates, of the required size and form, is carbonized by any of the well-known processes upon its outer surface A to the depth of from one-thirty-second to one-eighth of an inch,
leaving the iron in the interior Bot the bars,
rods, or plates in its natural state.
In this way the iron is made hard upon its outside, so that it cannot be filed or sawn, while its interior, being in the natural state, will be tough, so that it cannot be broken, and will thus afford a better protection against the efforts of prisoners to escape, and the efforts of their friends to liberate them, than the bars, rods, and plates heretofore made.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- An iron bar carbonized only on the surface, substantially as and for the purpose specified.
THOMAS J. TOLAN.
Witnesses:
B. S. TOLAN, JOSEPH H. STOPHLET.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US192471A true US192471A (en) | 1877-06-26 |
Family
ID=2261877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US192471D Expired - Lifetime US192471A (en) | Improvement in bars for jails, prisons |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US192471A (en) |
-
0
- US US192471D patent/US192471A/en not_active Expired - Lifetime
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