US145874A - Improvement in respirators - Google Patents
Improvement in respirators Download PDFInfo
- Publication number
- US145874A US145874A US145874DA US145874A US 145874 A US145874 A US 145874A US 145874D A US145874D A US 145874DA US 145874 A US145874 A US 145874A
- Authority
- US
- United States
- Prior art keywords
- respirator
- respirators
- improvement
- james
- plate
- 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
- 230000000717 retained effect Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007688 edging Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
Definitions
- the object of my invention is to provide a more convenient respirator than those heretofore used; and I accomplish this object, first, by constructing the said respirator of two plates or screens,A and B, of wire-gauze, (see Fig. 2,) connected together, and confining between them a filling, D, of fiber or fabric,
- the rear plate B and overlapping the front plate A; but other equivalent fastenings may be substituted for these hooks.
- the required degree of rigidity is imparted to the plates A and B by providing each of them with an edging or frame, (1, of silver or other metal not liable to corrode, the wire-gauze portion 6 being soldered or otherwise secured to these frames. (See detached views, Figs. 3 and 4.)
- the valve (0 consists, in the present instance, of a simple disk of rubber connected to the plate at one point, 00, and covering an opening in the said plate and in the filling D, (see Figs. 3 and 5,) the latter consisting of any suitable open fabric or fiber which will take up the noxious particles from the air which passes through it before entering the mouth and lungs.
- the respirator is simply placed against the teeth and gums, to the shape of which it is adapted, and is retained in place by the pressure of the lips, so that it can be readily removed and replaced, and the filling changed after it has become charged with noxious particles.
- the respirator may be so constructed as to be adapted to the interior of the mouth, in which case it would be necessary to retain it in position by means of a suction-plate, similar to those used for artificial teeth.
- a respirator consisting of two detachable perforated plates,A B, and intervening strainer D, the whole being constructed as described, so as to be retained between the lips and the teeth.
- a respirator constructed as described, so as to be retained between the teeth and the lips, and provided with a strainer, D, and with a valve opening outward and covering an opening in the strainer, as set forth.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Description
a w. JAMES.
Respirators. 145,37 Patented Dec. 23,1873.
Wfinemrea, ar
UNITED STATES PATENT QFFIGE.
BUSHROD W. JAMES, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN RESPIRATORS.
Specification forming part of Letters Patent No. 145,874, dated December 23,1873; application filed March 8,1873.
To all whom it may concern:
Be it known that I, BUsHRoD W. JAMEs, M. D., of the city and county of Philadelphia, State of Pennsylvania, have invented an Improved Respirator, of which the following is a specification:
The object of my invention is to provide a more convenient respirator than those heretofore used; and I accomplish this object, first, by constructing the said respirator of two plates or screens,A and B, of wire-gauze, (see Fig. 2,) connected together, and confining between them a filling, D, of fiber or fabric,
the rear plate B, and overlapping the front plate A; but other equivalent fastenings may be substituted for these hooks. The required degree of rigidity is imparted to the plates A and B by providing each of them with an edging or frame, (1, of silver or other metal not liable to corrode, the wire-gauze portion 6 being soldered or otherwise secured to these frames. (See detached views, Figs. 3 and 4.)
The valve (0 consists, in the present instance, of a simple disk of rubber connected to the plate at one point, 00, and covering an opening in the said plate and in the filling D, (see Figs. 3 and 5,) the latter consisting of any suitable open fabric or fiber which will take up the noxious particles from the air which passes through it before entering the mouth and lungs.
The respirator is simply placed against the teeth and gums, to the shape of which it is adapted, and is retained in place by the pressure of the lips, so that it can be readily removed and replaced, and the filling changed after it has become charged with noxious particles. In some instances, the respirator may be so constructed as to be adapted to the interior of the mouth, in which case it would be necessary to retain it in position by means of a suction-plate, similar to those used for artificial teeth.
I claim as my invention- 1. A respirator, consisting of two detachable perforated plates,A B, and intervening strainer D, the whole being constructed as described, so as to be retained between the lips and the teeth.
2. A respirator, constructed as described, so as to be retained between the teeth and the lips, and provided with a strainer, D, and with a valve opening outward and covering an opening in the strainer, as set forth.
In testimony whereof I have signed my' name to this specification in the presence of two subscribing witnesses.
BUSHROD W. JAMES, M. D.
Witnesses WM. A. STEEL, JOHN 'K. RUPERTUS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US145874A true US145874A (en) | 1873-12-23 |
Family
ID=2215288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US145874D Expired - Lifetime US145874A (en) | Improvement in respirators |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US145874A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5140980A (en) * | 1990-06-13 | 1992-08-25 | Ilc Dover, Inc. | Hood mask and air filter system and method of manufacture thereof |
-
0
- US US145874D patent/US145874A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5140980A (en) * | 1990-06-13 | 1992-08-25 | Ilc Dover, Inc. | Hood mask and air filter system and method of manufacture thereof |
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