US858351A - Instantaneous electric water-heater. - Google Patents

Description

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N, EGGS@ UNITED STATES PATENT OFFIQE.

HERBERT N. EOOHE Ann EaEn E. enEESE, or SAi\T rRANciScO, CALIFORNIA, Assienons OE ONE-HALE To "ri-1E JAMES W. EDWARDS co., ONE-FOURTH To sAin nEnnEe'r E. noone, Aun one-FOURTH rro THOMAS E. GRAY,

OFl SAN FRANCSC, CALFGRNA.

lNSTANTANEUS ELECTREG WATER-HEATER.

Specification of Letters latent.

Fatented June 25, 1907.'

application filed October 20, 1904.-. Serial No. 229,227.

ei-ectric Water heaters, the Object oi our in-v `i'ention being to provide a device of this character Which shali be compact in form, 'simple in construction, capable of easy inspection and repair, and which can be operated to deliver water Without using the heating apparatus, that 'is,.to deliver coldv water when desired,- and especially to pro Vide a construction which will render it impossible to (turn on the electric current Without at the same tirneturning on the Water.

in the accompanying drawing, Figure 1 is a brokenside elevation of the apparatus; Fig. 2 is a broken side View orq a heater; Fig. 3 is an enlarged broken horizontal section .on the line 3-3 of Fig. 1; Fig. i is a similar View on the line 1i-4 of Fig. i Fie. 5 is a broken side View of the lower part oi the apparatus at right angles to 1.

Referring to the drawing, 1. represen the iii-let branch pipe of a ya ye casing 2, in Which is the valve 3 operated by a handle fi, said Valve turning through a right angie in either direction from the position shutting O'f the water to that turning it on in full.

An uplift pipe 5 leading from said valve caspasses through the bottom oi a cylindrical casing d, which incloscs a number of heating tubes 7, of Wln'ch in the present instance We have Shown three, although .the runber may be Varied. The bottom. ci each heating tufee is permanently ciosed encent 8 at one side thereoi, anged that ali ot i ated as near as por centrai axis Ot the casing, and openings are coi/ered by a cover centrally secured thereto pipe i@ 'wl screwed into the end ci the upiiit pine 5. Hence the Water can pass from said pine 5 through said openings the interior of Said said said heating tubes. The Space between the tubes 7 at the bottom iS filled with solder' 44. The innerI surface of each heating tube is lined with insulating material 11, as, for instance, vulcanized iiber, and Within the same is inserted a heater comprising, iirst, a tube 12 oi porcelain or othersuitable non-con ducting material, Secondly, a high resistance wire which is iirst formed into a cylindrical coil and inserted into the porcelain tube, is then passed around. the bottom of the tube to thev outside oi the same and is then Wound in a spiral coil up to the upper end of the tube, and thirdly, a round rod 14 of porcelain, slate, or other non-conducting material, not aecting, or being affected by, Water. Thev Object of this rod is to fill up the space inside' the innercoil, compelling the Water to iioW rapidly, but in a small stream, over the high resistance wire, and 'for this same object the porcelain tube is made of such diameter that when the high resistance wire is Wrapped around the same, it almost ills ,the heating tube. To obtain the best results the Volume oi Water in each heating tube should be as small as possible for a given quantity of heating surface orn Wire, this small Volume being compensated b j a rapid flow. l

The ends of the coilsin each heating tube are connected to diametrically opposite terminals 15 in the form' oi screws Scre-We through hard rubber sleeves 16 which are again screwed through bearings 17 secured to the `sides of the tube. By this means the electric circuit is continued to the outside of the tube, While being insulated therefrom, andproviding no chance for lealrageoi' the Watcr.,. rPhe tops of the tubes are closed by caps 18 which are Screwed into the tubes by siots d0, and said caps have small openings 19 near the side of the cap, said Openings being all brought as near as possible to the central airis between the three tubes, and they are then inclosed by a cover 20 soldered down upon the caps, said cover having a pipe 21 extending upward 'from the middle thereof and passing through the coyer 22 for the casing, said cover bY A red to said casing by screws 23. i discharge pipe 24 is passed through a central hele in said cover, into the a gear Wheel 36 secured to the stem et the insulating' block 3l secured upon the end oi' a lower end of which discharge pipe the upper end of the tube 2l passes, and said lower end is screwed down upon said uba The wires from the several coils are connected, preferably in parallel, with terminals .26 which extend through an opening; 27 cut in the side of the casing., and pass through and are supported bvv an insulatingl block 2S which is screwedron to said casingr and closes said opening. These terminals on the outside of said blocl; are apertured vertically as shown at 29 and through said vertical apertures slideinetallic'bars 30 connected to an rod 32 sliding through a bearing 33 secured upon the outside of the casing, the lower end of said rod having securi'ed thereto a rack 3l which slides in a slideway and meshes with valve 3, said slideivav being: attached to a bracket 42 secured to the bottoni ot the casing. The upper end of said metalic rods 30 are adapted to slide int-o and through vertical holes 37 formed. in terminals 3S secured to an insulating block 39 secured upon the top ot the cover 22 of the casing, and to said terminal S8 are secured Wires il connected with a suit-able electric circuit. The arrangement is'such that the valve 3 is opened before said slide bars come into contact with. said upper terminals 3.8, so that there is no circuit until after the Water has commenced flowing. This prevents overheating el the wires and consequent injurT to the apparatus. To obtain cold Water the valve is turned in the opposite direction' through a right angle, which opens the valve Without closing the circuit.

It Will be observed that the openings 8 at the bottom ofthe heating tubes are consid-,4. erably larger than the openings 19 at the top thereof; this avoids any diminution ol' pressure in the heater.

l. ln an apparatus of the character described, the combination oi a casing, aplurality of heating tubes therein, a lining or insulating material on the inside of each tube, a tube of non-conducting material within each tube, a coil of high resistance Wire Within the inner tube, said Wire being continued in a coil on the outside of the tube, a rod otl non-conduclzvting material Within the inner coil, means for connecting the ends of the coils of the sevsassi eral tubes in series,'M .cans for.connecting-the ends ol' the series that. tric circuit, means for admitting water in suc- `'on through the outer tubes. and an op e connection betnf'ceju Claid meansu'licriby they act in unison, suost-a'ntially described.

2. ln an apparatus of the character described, the combination ein casino, a water conduit therein, an electric heatingcoil in the Water conduit, terminals on the casii'ipj connected to the. ends ol said coils, a second pair oi terminals on the casing connected with an electric circuit, a valve supplying 4Water to the Tvater conduit, Iand a pair oi' slide bars sliding through the one pair ol tern'iinals and operatively connected with the valve to contact with the other terminals re spectivelj.when the valve is open, substan tiallyV described.

3. in, an apparatus of the character described, the cnnbination oi a casing, a pho ralit)7 oi parallel heatin, r tubes therein each having an end closed exceptlor a small opening therein, all of the openiiigsbeing' arranged near to'each other, a cover inclosingall el.' said openings, a pipo'leading therefrom, elec tric heaters in the several tubes, means i'or supplying Water to the tubes, and means lor supplyingl electricity to the heaters, subs-tenitiall)v as described 4. In an apparatus o'i the character described, the combination oi' a casing, a pluralitj ot parallel heatingl tubes therein, each tube having a large opening in its supplv end formed Awith an elec l 'j and a small opening` in its discharge end, all

the openings at each end being arranged near to each other, a cover inclosingg' the openings 4at each end, means i'or supplying water to the coverat the supplyv end and discharging it from the cover at the discharge end, electric heaters in the several tubes, and means for supplying,r electricity7 to the same, substantiallkvv as described.

In witness Whereoil We have hereunto set our hands in the presence el" two subscribing- Witnesses.

HERBERT N. ROCHE. FRED F. BREESE,

Vitnesses: v

FRANCIS M. Winer-ir, Bassin GORFINKEL.

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