US 1235550 A
Description (OCR text may contain errors)
H. J. CARMODY..'
l FIRE EXTINGUISHER.
APPLlcATloN msn JuLY 7. me.
'I f4 17am/ff J.
Patented Aug. 7, 1917.
5| n ne n rot UNITED STATES BATENT OFFICE. j
HAROLD J. CARMOD'Y, oFBnooxLYN, N EW YORK, AssIqNon 0F ONE-THIRD gro JOSEPH p nr. LEVINE AND ONE-Turm) l'ro HARRY UFLAND, `io'ii or NEW YORK, N. Y.
To all whom/'it mayiconcem.' Be it known that I, HARQLD J. QAnMoDY, a citizen of the United States, vresiding at New York, borough of Brooklyn, 1n the.
county of Kings and State of New York,
have ir'iventedl certain :new and useful Imv continuously on board railway trainsl or kept on the premises, and to be operated used upon one form of the collapsible tube. Fig. 5 is a section, showing fragmentarilyA 5o more or less after lthe, manner of a syringe,
for the purpose of lthrowing into'v the fire a liquid capable of generating gases detrimentalv to combustion.
More particularly stated, I seek to improve the apparatus ofthe' kind just men tioned by housingthe liquid in collapsible tubes andgusing these tubes one at a time 1n the extinguishing apparatus, each virtually serving, for the time being as a part thereof. In this way the cost of production of the fire extinguisher may be greatly reduced, as
-no part of the mechanism except the' collapsible tubes need be made proof against the corrosive4 effects ofthe liquid used in the extinguisher. y
Reference 1s to be 'made to the accompanying drawing forming apart of this applica` tion, and in which like numerals indicate like parts in all of the igures.-
Figure 1 is substantially -a central section .through the extinguisher complete, andl shows it as containing a 'collapsible tube, from which a portion of the liquid has been l Fig. 2 is alsection on the line 2-2 of Fig. 1, ,looking in the direction indicated by the arrows. v
Fig. 3 isa section on the line 3-3 of Fig. 1, looking in the direction indicated by the arrows. Y
Fig-4 is a detail view, showing fragmentarily in perspective the adjustable nozzle a nozzle used upon another lapsible tube. v l V A casing is shown at 6, and has the eneral form of a cylinder. A cap 7 is, tted form of the coli Specication of Letters .Patent.-
' vided centrally with an opening Patented Aug. "7, 1917. y Application mea my 7.41916. serial No. 107,913.
over one end of this cylinder, 4andis prof' i The cylinderhas two slots 9, 10 disposed diametrically opposite each other and each extending parallel to the vgeneral longitudinal'axis of the cylinder.
The 'casing is spaced a' little dlstance fromthe adjacent end of the casing, and provided with a central opening 12. As observations are made through this opening, as hereinafter described, I designate itas a peep hole. Mounted upon opposite sides of the casing, and disposed adjacent the slots 9, 10 are a pair of substantially tubular housings 13, 14. and located within these housings are la p'air of screw shafts 15,16;
rovided with a floor 11,
' Thefscrew shaft 15 is journaled in bearings 17, 18, and for this purpose is provided with reduced portions 19, 20. The screw shaft 15 carries a collar 21 which rests directly upon the bearing 18, and thus supf-ports the end thrust-of the shaft. A bevel lmilled,`as shown, is mounted rlidly upon gear 22 is mounted upon the reduced portion 20.
' The screw shaft 16` is supportedby bearings 23, 24, and is provided with reduced portions 25, 26 which extend through these bearings, a bevel vgear 27 being carried by the reduced portion 26. v
Secured to the annular iioor 11 are a pair of bearings 28, 28, and 'supported by these bearings is a shaft 29. Two bevel gears 30,
31 are secured upon this shaft, amd mesh respectively with the bevel gear 22, 27, so as to, turn the same in opposite directions. For accommodating the shaft 29 and parts carried thereby the casing is provided with holes 32, 33. The tubular housings 13 and 14 are respectively provided with holes 343 35, to promote access to the shaft29.
A fly wheel 36,having its peripheral edge the shaft 29, and is provided wit a handle 37 whereb it is rotated,
Mounte housin s 13, 14 are two nuts 38, 39, threaded interna v to fit u'on the screw shafts 15,
A16, the shaft v15 belng threaded'left-handed and the shaft 16 being threaded righthanded.
vSlidably mountedwithin piston 40, which carries the nuts 38, 39, with the casing is a.
to travel wlthin thel tubular y these which it is rigidly connected by necks 42. The piston 1s provided with a raised portion or protuberance 41, preferably integral with it.
The casing 6 is provided with a pair of bayonet pins 43 disposed diametrically opposite each other, and the cap 7 is provided opposite directions.
with a pair of bayonet slots 44 for receiving end o the casing.`
Fitting loosely but neatly within the casing is a tube 45 provided with corrugations` 46 and adapted to collapse by ther application of pressure to its ends, as may be understood from Fi 1. This tube is a transient member, that 1s, intended to be used up and replaced by others from time to time. The corrugations 46 fold upon each other, as 1showr at 46a, as the tube is gradually colapse The collapsible tube 45 is .provided with a threaded neck 47, and carried by this neck is a spider 48, the form of which is shown more articularl in Fig. 4. The spider is provi Ied with a oss49, having the form of a cone.
Fitting upon the threaded neck 47 is a threaded cap 50, provided with a conical portion 51 having a hole 52. This hole is quite small, having a diameter of say to -516 of an inch.
The collapsible tube'may, if desired, have instead the form shown in Fig. 5. Herethe body portion of the tubeippearsat 53, and is provided with a -threa ed neck 54, having an end portion 55 provided with a nipple 56. Covering the neck is a threaded cap 57, which carries a disk 58 of cork and presses the same down upon the nipple' 56.
The liquid contained within the collapsible tube appears at v59, and may be car on tetrachlorid or any othersubstance suitable to be e'ected in a small stream and to evolve a suita 1e gasfor extinguishing ames.
Theo eration of my device 1s as follows:
A col apsible tube, made as above described and filled with a suitable liquid such as carbon tetrachlorid, is placed within the casing. This is dore by removing the cap 7, inserting the collapsible --tube, and re acin thecap, so that the neck portion o theV v tu e protrudes through the openingv 8, as
shown 'n Fig. 1. In order to introduce the i collapsi le tube, the piston 40 is drawn back to its normal position near the Hoor 11 and for this purpose the wheel 36 is turned. If the movable parts are stuck ,or otherwise diiicult to move, the wheel 36 '1s grasped by itsmilled edge and turned forcibly; but if it turns easily, as it normally should do, it may be turned b the handle 37.
The collapsib e tube being inserted, the.
extinguisher is laid aside until needed.
In order to usethe extinguisher the cap 50 is given a single turn or two, so that the 1ns and anchoring the cap upon thel The ini
incasso 52. Next the wheel 36 is turned so as to rotate the shaft 29 and bevel gears 30, 3l which by their engagement with the bevel gears 22, 2 cause the screw shafts 15, 16 to turn in Thus the nuts v38, 39 are pushed along, carrying ther piston 41 with them. The protruding portion 41 is pushed into the end of the collapsible tube, which yields and becomes crumpled accordingly, as shown in Fig. 1, and the corrugations of the collapsible tube are thus gathered or folded around the protruding vportion 41 of the iston.
All of the iquid within the collapsible tube need not be used upon a single occasion. Any party of it may be so used, and after each use of the tube itis again fastened up by giving the cap 50 a turn or two in order to tighten it and eectively seal the hole 52.
In using the form of collapsible tube shown in Fi 5 the procedure is the same, except that t e cap 5 is removed bodily, in order that the liquid may be ejected through the hole 56.
The collapsible tube may be made of ure tin or so-called tin plate-that is, thin s eet steel or iron coated with tin. It may also be made of alloy of the kind usually employed inmakin colla sible tubes,... employed by painters or hol ing paints. The essential requisite is that the metal of which the tube is made must not be such'as to cause its destrlctioxi by the corrosive action of the liquid use The casing 6 housings 13, 14 and various other parts of the extinguisher may be made of any cheap metal suitable for the pu ose.
may e made of steel or iron, i desire as the liquid does'not come into contact with any part of them. On account of this feature there is a considerable saving, as the various parts of the extinguisher do not have to be made proof against the corrosion of the Huid. i
I do not limit myself to the precise mechanism shown, the spirit of my invention be,
commensurate with my claims: claim:
1. In a ire extinguisher the combination of a casing rovided with an opening, a container havlng such form as to be collapsible by pressure and located within said casing, 'said container having a nozzle extending through said opening in order to facilitate the ejection of a liquid from said container as said container is collapsed, a
Vpiston located within said casing and movable for the purpose of causing said casing to collapse, a plurality of nuts connected to `said piston in order to shift the position lill@ izo 1 mounted ,upon opposite sides of said casing screw shafts carried by said casing and journaled relatively thereto and mechanism common to said screw shafts and controllable at the will of the operator for turning said screw shafts. I g i 2. In a re extinguisher the combination of a4 casing having the proximate form of a cylinder and provided with a pair of slots extending lengthwise of said cylinder and disposed diametrically opposite each other;
a container vlocated withln said casing an having the general form of a cylinder said container belng collapsible endwise and provided with an outlet for the pu ose ofdischarging a liquid, a piston slldab y mounted within said casing and provided with a air of oppositely disposed supporting mem ers extending1 outwardly through sald slots, a pair of t readed` nuts carried by said su porting members, apair of screws revoluby and extendmg through said nuts, and means hand thread andthe otherhavin hand thread, and means controlla le at the 40 controllable at the will of the operator .'for turning said screws in unison.
3. In a lire extinguisher the combination 25 of a casin provided with a compartment, a collapsib e containerV mounted wlthin said compartment, a piston mounted within Said compartment an movable relatively to said casing for the purpose of exerting pressure 30 upon said container in order to cause the same to collapse, a pair of nuts connected to said piston and provided with threads, the thread of one of said nutsbein ri ht handed and the thread of the other o sa1d nuts be` 85 ing left handed, a air of screw shafts extending through sald nuts and engaging the same, one of said screw shafts having a lefta right will of the operator for turning said screw Ashafts in opposite directions.
, HAROLD J. cARMonY.