US514094A - Fire-escape - Google Patents
Fire-escape Download PDFInfo
- Publication number
- US514094A US514094A US514094DA US514094A US 514094 A US514094 A US 514094A US 514094D A US514094D A US 514094DA US 514094 A US514094 A US 514094A
- Authority
- US
- United States
- Prior art keywords
- spindle
- blades
- drum
- chamber
- escape
- 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
- 239000012530 fluid Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 8
- 229940003969 Adrenergic and dopaminergic agents combinations Drugs 0.000 description 2
- 229940001019 Aluminium antacid compound combinations Drugs 0.000 description 2
- 229940010996 Amide local anesthetic combinations Drugs 0.000 description 2
- 229940084438 Antiinfective irrigating solution combinations Drugs 0.000 description 2
- 229940095835 Beta-lactamase sensitive penicillin combinations Drugs 0.000 description 2
- 229940001469 Calcium antacid compound combinations Drugs 0.000 description 2
- 229940073688 Caries prophylactic agent combinations Drugs 0.000 description 2
- 229940060167 Enema combinations Drugs 0.000 description 2
- 229960003366 Hepatitis vaccine combinations Drugs 0.000 description 2
- 229940031471 Imidazole and triazole derivative topical antifungal combinations Drugs 0.000 description 2
- 229940000248 Intermediate-acting sulfonamide combinations Drugs 0.000 description 2
- 229940107315 Local hemostatic combinations Drugs 0.000 description 2
- 229940007270 Long-acting sulfonamide combinations Drugs 0.000 description 2
- 229940000523 Magnesium antacid compound combinations Drugs 0.000 description 2
- 229940111336 Other anti-dementia drug combinations in ATC Drugs 0.000 description 2
- 229940032419 Other antifungal combinations for topical use in ATC Drugs 0.000 description 2
- 229940106059 Other intestinal adsorbent combinations in ATC Drugs 0.000 description 2
- 229940076421 Other irrigating solution combinations in ATC Drugs 0.000 description 2
- 229940097635 Penicillins with extended spectrum combinations Drugs 0.000 description 2
- 229940001079 Platelet aggregation inhibitor combinations excl. heparin Drugs 0.000 description 2
- 229940086052 Potassium supplement combinations Drugs 0.000 description 2
- 229940084925 Salt solution combinations Drugs 0.000 description 2
- 229940000628 Short-acting sulfonamide combinations Drugs 0.000 description 2
- 229940036145 Specific immunoglobulin combinations Drugs 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001721 combination Effects 0.000 description 2
- 229940086715 combination drugs used in erectile dysfunction Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229940050438 excl. combinations with cough suppressants expectorant combinations Drugs 0.000 description 2
- 229940048784 expectorant combinations excluding combinations with cough suppressants Drugs 0.000 description 2
- 229940050564 fast-acting combinations Insulins and analogs for injection Drugs 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 229940090613 gonadotropin combinations Drugs 0.000 description 2
- 229940052038 intermediate-acting combinations Insulins and analogs for injection Drugs 0.000 description 2
- 229940052297 intermediate-acting combined with fast-acting- combinations Insulins and analogs for injection Drugs 0.000 description 2
- 229940074591 local opthalmologic anesthetic combinations Drugs 0.000 description 2
- 229940051883 long-acting insulins and analogs for injection combinations Drugs 0.000 description 2
- 229940042835 lung surfactant combinations Drugs 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229940064925 opium alkaloids and derivative combination cough suppressants Drugs 0.000 description 2
- 229940064347 other cough suppressant combinations in ATC Drugs 0.000 description 2
- 229940021273 other nasal preparation combinations in ATC Drugs 0.000 description 2
- 229940067531 otologic analgesic and anesthetic combinations Drugs 0.000 description 2
- 230000000979 retarding Effects 0.000 description 2
- 239000003340 retarding agent Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229940030476 topical antibiotic combinations Drugs 0.000 description 2
- 229940022453 vitamin D and analog combinations Drugs 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
- A62B1/12—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys hydraulically operated
Definitions
- the tape may be wound up by means of a crank i, which may be screwed into a hole 11' in the edge of the chamber cover (1, and when not in use may be carried in a holder j so cured to the case a.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Lowering Means (AREA)
Description
(No Model.)
- S. H. ROPER.
FIRE ESCAPE.
1%.. 514,094; Patented Feb. 6,- 1894.
Ryan-rum:
E mnoml. u'monnmmd coMPmY.
wAaHmeYon. n. c.
UNi'rnn {STATES SYLVESTER H. ROPER, OF BOSTON, MASSACHUSETTS.
FIRE-ESCAPE.
SPECIFICATION forming part of Letters Patent No. 514,094, dated February 6, 1894.
Application filed May 19, 1893- Serial No. 474,764:- (No model.)
To all whom it may concern.-
Be it known that I, SYLVESTER H. RoPER, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Fire-Escapes, of which the following is a specification.
This invention relates to that class of fire escapes'in which an object or person is lowered by means of a line which unwinds from a reel or drum. An apparatus embodying these features is shown in my former Patent No. 439,191, granted October 28, 1890, and means are there illustrated whereby a suitable fluid may be employed as a retarding agent to prevent too rapid rotation of the reel or drum in unwinding.
The object of the present invention is to provide improved means for securing this retarding effect through the agency of fluid.
To this end the invention may be said to consist in combining with a spindle and drum to which a line is attached, a series of radial blades fast with the spindle, a chamber inclosing said blades and fast with the drum, and aspindle rotatively supported in said chamber and having blades which engage those of the first named spindle.
The invention further consists in certain novel features of construction and combina tions of parts to be describedhereinafter and pointed out in the claims. 7
Of the accompanying drawings forming a part of this specification, Figure 1 shows'a side elevation of an apparatus constructed in accordance with my invention. Fig. 2 shows a view of the opposite side with the cover of the chamber removed. Fig. 3 shows a section on line 3, 3 of Fig. 1. Fig. 4 shows the chamber in section and the inclosed gears in elevation.
The letter a designates a casing which is adapted to be suspended from asuitable fixed support, as a sill, by means of a chain a. attached to it and having a hook a. at its free end. Thus the said casing will be held practically stationary. A spindle b extends through the saidcasing, and a drum or .reel 1) is mounted in said spindle. A line, pref erably a steel tape, 0 is attached to the drum and winds on the same within the casing, the latter having an opening in one side through which the tape issues from the casing. The
spindle b projects from the casing, as at 12 and a series of radial blades 1) are formed upon it, this extension of the spindle and the radial blades forming in effect a gear wheel.
A chamber 01 is fast with the drum (9' and one side, a of the casingis preferably fixedly secured to said chamber. The chamber incloses the blades 19 and itsinner wall extends in the line of a circle, so that the ends ofthe blades may closely [it it. The chamber has a correspondingly formed portion in which a spindle p is rotatively supported; said spindle carrying a number of radial blades 19' which intermesh with the blades b. The spindle p and blades 19 form in effecta planetary gear.
The chamber d is filled with fluid, preferably glycerine on account of its density, and the operation is as follows: The object or per son to be lowered is attached to the tape 0. The unwinding of the tape rotates the drum 1) and with it the chamber d, and the gear 19' is carried around the gear I), the latter remaining stationary while the former moves around it, and is thereby also rotated on its own center. The fluid in the chamber offers resistance to the blades 10' and b which form movable walls between which the fluid is pressed as the blades interlock, and hence the rotation of the drum is retarded. The resistance is wholly between the two blades that are confronting and approaching each other, the escape being cut off by the contacting blades, as best illustrated in Fig. 2, from which it will be understood that the fluid is pressed between the two blades 19 b and that escape is out 01f by contact of the blades p and b. This resistance is such as to make the descent of a comparatively heavy body perfectly safe.
Provision is made for re-winding the tape while the resistance is dormant, as follows: The spindle projects from the case a, as at a and a ratchet h is affixed to it, in the present instance, by flattening two sides of the spindle and correspondingly shaping the opening in the ratchet which receives the spindle, and by screwing a nut h on the end of the spindle, which is threaded for the purpose. The ratchet works close to the case, and a pawl h is pivoted to the latter and pressed into engagement with the ratchet by a spring If.
The direction of rotation of the drum during the unwinding of the tape is such that the pawl h forms a stop, which prevents rotation of the ratchet and consequently of the spindle, and hence the drum turns on the spindle and the resistance is active. hen the drum is rotated in the reverse direction, the pawl no longer acts as a stop and the ratchet is free to pass it. Hence the drum and spindle turn together, and the gear 11 will turn as the chamber turns, and no relative action of the two gears will, take place, and consequently there will be no resistance.
The tape may be wound up by means of a crank i, which may be screwed into a hole 11' in the edge of the chamber cover (1, and when not in use may be carried in a holder j so cured to the case a.
It is evident that the construction here shown may be varied without departing from the spirit and scope of the invention.
I claim- 1, A fire escape comprising in its construction a spindle and support therefor, a drum on the spindle, a line attached to said drum, a plurality of radial blades fast with the spindle, a chamber inclosing said blades and fast with the drum, and a spindle rotatively snpported in the said chamber and having blades which engage those of the first named spindle.
2. A fire escape comprising in its construction a spindle and support therefor, a drum on the spindle, a line attached to said drum, a plurality of radial blades fast with the spindle, a chamber inclosing said blades and fast with the drum,aspindle rotatively supported in the said chamber and having blades which engage those of the first named spindle, a ratchet affixed to the spindle, and a pawl on the spindle support and engaging the ratchet.
In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 12th day of May, A. D. 1893.
SYLVESTER H. ROPER. Witnesses:
(J. F. BROWN, A. D. HARRISON.
Publications (1)
Publication Number | Publication Date |
---|---|
US514094A true US514094A (en) | 1894-02-06 |
Family
ID=2582906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US514094D Expired - Lifetime US514094A (en) | Fire-escape |
Country Status (1)
Country | Link |
---|---|
US (1) | US514094A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3103331A (en) * | 1962-02-23 | 1963-09-10 | Stencel Aero Eng Corp | Aerial recovery systems |
US4469196A (en) * | 1982-09-30 | 1984-09-04 | Charlton Sadler | Fire escape device |
-
0
- US US514094D patent/US514094A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3103331A (en) * | 1962-02-23 | 1963-09-10 | Stencel Aero Eng Corp | Aerial recovery systems |
US4469196A (en) * | 1982-09-30 | 1984-09-04 | Charlton Sadler | Fire escape device |
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