Chemical fire-extinguisher

  • Inventors:
  • Assignees:
  • Publication Date: July 03, 1888
  • Publication Number: US-385661-A

Abstract

Claims

(No Model.) I 2 Sheets-Sheet 1. ' W. H. CUMMINGS. CHEMICAL FIRE BXTINGUISHER. No. 385,661. Patented July 8, 1888. TIE-.2. (No Model.) 8 2 sheets-sheen 2. W. H. GUMMINGS. CHEMICAL FIRE BXTINGUISHBR. No. 885,661. Patented July 3, 1888. 'gm-Ly-L'E EEE E5 lTn/mtmv; ' @y :Ely flinky. NITE STATES WILLIAM H. OUMMINGS, OF CHARLTON DEPOT, MASSACHUSETTS. CHEMICAL FlREn-EXTINGUISHER. SPECIFICATION forming part of Letters Patent No. 385,661, dated July 3, 1888. Application filed February 17, 1888. Serial No. 264,414. To @ZZ whom it may concern.' Be it known that I, WILLIAM H. GUMMiNGs, of Charlton Depot, in the county of Worcester and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Chemical Fire-Extinguishers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and the letters of reference marked thereon, forminga part of this specitication, and in which Figure 1 represents a side View of a chemical fire-extinguisher with my improvements applied thereto. Fig. 2 represents a vertical central section ofthe device shown in Fig. l on li ne a, Fig. 3. Fig. 3 represents a cross section on line b, Fig. l; and Fig. 4 represents a crosssection on line c, Fig. 1. Arrows, Figs. l and 3,indicate the line of View in the respective sections. To enable those skilled in the art to which my invention belongs to make and usethe saine, I will now describe the invention more in detail. In the drawings the complete device is marked A, and which is made up of a strong brass case or cylinder, B, having a brass bottom, C, securely braced or fastened airtight 4to the bottom of the case B. A strong brass rim, D, is also securely braced or fastened to the upper edge of the case B, said rim .having a sc1ewthread, d, cut on its inner surface, to receive the screw-thread con the cap E,Which, after the extinguisher has been charged, is screwed on to make an air-tight fit, as fully indicated in Figs. 1 and 2 of the drawings, projection D ou cap E serving as a suitable means for turning cap E on or off by means of a wrench or other suitable device. E E are handles for receiving suitable straps for hanging the device up, or carrying it from place to place, or for using it at tires. When the extinguisher is to be charged, cap E is removed and the proper amount of water or other liquid, F, is turned in to ill case B to height desired, and it may be full, after which bottles or jars G G, lled with the desired chemicals, in the ordinary way of filling and sealing such glass bottles or jars, are inserted through openings H H in the guide and sup- (No model.) porting plate I, fastened to the inner surface of case B a short distance below its top, and the lower ends of said bottles G deposited or allowed to rest in cups J J in the supporting and breaking cross-spindle K, with their upper ends, G G, a short distance below the under side of cap E when the parts are all in position, as shown in Fig. 2. The inner bearing, K', of spindle K turns and is supported in a cup-bearing secured to the inner side of case B, while the outer end, K2, has a hole tapped out to receive the screwthread cut on the inner end of the thumb-spindle L when the latter is screwed into the same, as shown in Fig. 2, said parts being shown, in this instance, as fastened together by means of screw f,- but any other proper mode of fastening may be adopted. Thumb-spindle L is turned by the thumb-piece L on the outer side of case B, its stem L2 passing through a stulIingboX, L3, consisting of the outer cup part, M, provided with a screw thread to receive the sere wthread on the stern of the inner part, M. A packing, g, is placed on stem L2, which is compressed about said stem :and in the cup part M to make a tit when stem L2 is screwed into place, as indicated in Fig. 2. A tight lit is also made between the inner part, M', and case B by a packing, h, placed on stem N on the part M', which is compressed and compacted between the head N of part Mand the inner side of case B, when stem N is screwed into the cup part M, as indicated in the drawings. A stop piece, t, is held by screw f to prevent endwise movement of spindle K; but any other suitable device may be employed for that purpose. It will thus be seen that spindle K can be quickly turned when it is desired to use the extinguisher, and by which operation the bottles or jars G G will be broken and their contents dropped into the liquid F, when the operator, by turning the cock or valve O, can discharge the extinguishing liquid and gas upon the fire, the discharge being regulated by the operator. The success of chemical extinguishers depends largely upon the quick and perfect breaking of the glass bottles, and that, too, in gree, since the in ner edges of the holes H H of case B is therefore preserved, while, if occasion requires, plate I and spindle K` with its cups J attached, can be conveniently removed and the broken glass bottles and other refuse mattei' removed and case B cleaned out and relitted for use again. The same convenience of detaching and taking out the parts renders repairing less expensive and more eX- peditious. 1o in guide and supporting plate I are provided Having described my improved chemical 6o with pointed projections m, and the cups J J tire-extinguisher, what I claim therein as new are also provided with inwardly-projecting and of my invention, and desire to secure by points n at their upper edges. Said points m Letters Patent, is and n are of metal, and are cast or formed with l. In a chemical tireextinguisher, the com- ;5 the parts to which they belong, and the glass bination, with case B, for holding the liquid 65 bottlesGaresupported by said breaking points and chemicals, of turning spindle K, of less fromlateral motion. Consequently when spinlength than the diameter ot' case B, cups J, dle K is turned the bottles are quickly broken securely fastened to the upper side of spindle both at top and bottom and discharged from K, the latter being arranged in a horizontal zo cups J J into the liquid F, with their cheniicposition in the upper part of case B and sup- 70 als in a diffused and separated manner. ported at one end by an internal cup-bearing It will be understood that a single cup J and at the other by a supplemental journal and bottlc'G may be used, provided the necinserted through the side ot' case B, and plate essary chemicals can thus be employed in said I, provided with holes or openings H to re- :5 cup and in the liquid. Then, again, my imceive and support the upper ends of the glass 75 proved tire-extinguisher can be quickly rebottles of chemicals, While their lower ends charged and ready for a second use. Disrestin and are supported by cups J, said parts charge-pipe P is provided with a wire screen, being arranged relatively, as shown and dep, at its lower end, and is properly fastened scribed, for supporting, breaking, and dis- ;o to the case B upon the inside and also where charging the bottles of chemicals by a partial 8o it passes through the case at s. rotation of spindle K at the desired time, sub- Any suitable slide or catch may be arranged stantially as described and set forth. upon the outside of the case for locking or 2. rlhe combination` with case B, provided holding the thumb-piece L and its spindle L with a cupbearing on ils inner side, and turn- ,5 from turning after the extinguisher has been ing spindle K, of less length than the inner 85 .o ing spindle K is shorter than the internal dithumb spindle L, provided with thumb-piece 9o ameter of case B. Consequently said spindle, L on its outer end, and a screw-thread on the with its cups J securely fastened thereto, can inner end of its stem L2, to lit the screw-thread be quickly inserted and removed or det-ached, in the hole in end K2 of spindle K, said parts and which construction furthermore enables being constructed and relatively arranged for Y 5 me to makeicase B with only one lateral hole operation, substantially as and for the pnr- '95 charged, said lock or fastening to be slipped or moved back when the operator wishesto use the extinguisher. It will be seen that the turning and breakfor the connection of said parts, and which hole can be made quite small, since the journalbearing is inserted through theside of case B and screwed into the end of the turning spindiameter of case B, and provided at its inner endwith bearing K, to fit said cup-bearing, and with a central hole in its outer end, KL,A provided with a screw-thread, as set forth, of poses set forth. WILLIAM H. CUMMINGS. Witnesses: THos. H. DODGE, DAVID L. BRADT. o dle K, as herei nbefore explained. The strength

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