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Publication numberUS2111251 A
Publication typeGrant
Publication dateMar 15, 1938
Filing dateSep 19, 1936
Priority dateSep 19, 1936
Publication numberUS 2111251 A, US 2111251A, US-A-2111251, US2111251 A, US2111251A
InventorsPersifor G Spilsbury
Original AssigneeAnaconda Wire & Cable Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Icicle melter
US 2111251 A
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Description  (OCR text may contain errors)

P. G. SPILSBURY March l5, 1938.

ICICLE MELTER Filed Sept. 19,- 1956 THERMOJ/l Patented Mar. 15., 1938 UNITED STATES ICICLE MELTER Persifor G. Spilsbury, Phoenix, Ariz., assigno'r to Anaconda Wire & Cable Company, New York, N. Y., a corporation of Delaware Application September 19, 1936, Sirial No. 101,583

2 Claims.

'I'his invention relates to means for melting and, therefore, preventing the retention of icicles .along the overhanging portions of roof structures.

In northern sections of this country, it is known that damage to building structures and possible injury to persons is likely to result because of the formation of large icicles along the edges of roofs' or gutters on various building structures. One object of the present invention is to provide means for preventing the formation of such icicles or to melt oil the same in the event they should fall. The invention will be fully apparent from the following specification when read in connection with the accompanying drawing.

In the drawing- Fig. 1 exemplifies a flat roofed structure of a masonry type of building with my invention applied thereto; Fig. 2 is a sectional elevation o a frame building showing the application of my in vention thereto; Fig. 3 is an enlarged sectional detail of a portion of Fig. 2; Fig. 4 is a perspective view diagrammatically showing a circuit arrange ment and certain circuit controlling devices; and Fig. 5 is a detailed view oi an'alternative amfbodiment of the invention.

Referring in detail first to Fig. 1,. iii represents an upright. wall of a building structure and ii the roof portion thereof. A cornice or other overu1 hanging element is secured to the roo! in any suitable approved manner. In the embodiment of the invention shown in Fig'. .1, I provide a ashing including an upper ilange I3, one ex` tremity of which overlaps the roof structure and extends under the rooting sheets I4. This flashing includes a substantially upright wali i5 and an inwardly .bent portion I6, part of which is bent around, indicated at Il, to form a chamber for enclosing a heating element i8.

In the embodiment illustrated in Fig. 2, the frame building includes an upright wall Ill, roof rafters Il'b carrying roofing boards Iib and shingles' |I. In this case, the upper flange i3 of the sheathing extends under the lower course of shingles and the chambered portion Il is formed at the lower extremity of the upright portion it, Extending obliquely upward from the portion II, there is an extension il* which is nanged downwardly as at i6h for engagement with the side wall.

This chambered portion carries s heating element, indicated at i8. which issubstantially the same as that shown in the embodiment of the invention illustrated in Fig. l'.

As shown in Fig. 3, the heating element icon- (Cl. 10S-26) sists of a high resistance electrical conductor surrounded by suitable insulating material I9.

The heating element is adapted to'be energized by current supplied from a suitable source. In the drawing, I have shown positive and negative 5 line wires 20 and 2i and a manually operated switch 22 constituting a master control. The circuit will preferably include a variable resistance indicated at 23. Preferably, I will also include in the circuit a Athermostat 24 of known construction, which will be effective to make or break the circuit through the heating element, when predetermined temperatures are reached. In some cases, I also consider it advantageous to provide means which will permit the energization of the heating element only'at predetermined time intervals. For example, to this end, I will provide a clock operated switch 25, which may be so set that icicles can be melted only during the evening hours, when it is very unlikely that there will be persons, in the neighborhood o! the building, who might be hurt by the melting off of the icicles, which might form.

From the disclosure, it will be apparent that the device can be so operated that current will ilow through the heating element at all times when the temperature is below a certain point. The element can be so designed that suiilcient heat will be generated to prevent the formation of icicles along the cornice or coping of a building. 30

Or, alternatively, the flow of current to the heating element can be controlled manually at intermittent times so as to melt oi any icicles, which may have accumulated during the time theelement was not in operation.

The heating element is preferably enclosed in copper tubing or housing, such as indicated at 26. .Various materials may be used for the iiashing, but I preferably use either copper, brass, or like metals because of their high heat conductivity and relatively low cost and resistance to destruction by the elements;

In Fig. 5, I have illustrated an alternative embodiment ofthe invention-wherein the heating element li8 is mounted in juxtaposition to an 45 ordinary sheet metal gutter 21 mountedin position to receive water falling from the roof. It is clear that vwith the heating element'juxtaposed to the gutter, as illustrated, the formation of ice in the gutter with resultant clogging would be 50 adequately prevented.

While I have described quite specifically the particular embodiments ofthe invention herein illustrated, it is to beunderstood that various modiilcations may be made without departure 55 from the` invention as defined in the appended 4 claims. Y

v/Wh'atlclmlniist f l. A rooi' structure inciudinga yflashing member l formed with a chambered portion at the low point ot the ashing, localizlng the dripping 11nd enclosing a heating element elective to prevent the retention of icicles.

gral enclosure for a heating element effective to prevent the retention o; icicles.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2452367 *Apr 5, 1946Oct 26, 1948Drackett CoDrain trap cleaning device
US2464052 *Jan 13, 1947Mar 8, 1949John NumrichHeating unit for pipes
US2469971 *Apr 21, 1947May 10, 1949Liston Benjamin FApparatus for removing icicles from the eaves of buildings
US2507039 *Dec 12, 1947May 9, 1950Frederick W MillerDeicing device for roofs
US2514647 *Mar 16, 1948Jul 11, 1950Jolliffe Gordon FRearview mirror system for vehicles
US2623149 *May 29, 1950Dec 23, 1952Shafeek AmarIce-cutting device
US2699484 *Nov 7, 1952Jan 11, 1955Herbert L MichaelsDeicer for roofs
US2702334 *Jan 22, 1952Feb 15, 1955Dole Refrigerating CoPlate heater
US2762448 *Jan 10, 1952Sep 11, 1956J A Zurn Mfg CoSteam heated roof drain
US3098322 *Feb 27, 1961Jul 23, 1963George GreeneStructural eaves convering
US3141955 *Apr 12, 1962Jul 21, 1964Culpepper Abner ADevice for effecting water-flow from a roof or the like
US3204374 *Jun 7, 1961Sep 7, 1965Nat Rollex CorpPrefabricated soffit construction
US3207211 *Jul 3, 1963Sep 21, 1965Irving J WinterfeldtEaves trough with radiation absorbing attachment
US3299570 *Dec 3, 1964Jan 24, 1967Radcliffe Richard SCanopy
US3415019 *Mar 10, 1967Dec 10, 1968Melvin A. AndersenIntegral soffit and fascia unit of synthetic plastic
US3716076 *Dec 7, 1970Feb 13, 1973Franzmeier ARain trough devices
US3725638 *Jun 1, 1971Apr 3, 1973Arctic Roof Deicing CorpHeat radiating assembly and apparatus for permitting ice blocked water to drain off of house roofs
US4152577 *Jun 23, 1976May 1, 1979Leavines Joseph EMethod of improving heat transfer for electric pipe heaters
US4224923 *Aug 14, 1978Sep 30, 1980Wells Carl ESolar roof drain
US4291673 *Aug 9, 1979Sep 29, 1981Deutz Roger TPassive solar roof ice melter
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US5746027 *Dec 27, 1996May 5, 1998Bonerb; Timothy C.Device and method for removing ice and snow from roofs and overhangs
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WO1994001637A1 *Jul 7, 1993Jan 20, 1994Asle JohnsenA device for ensuring free water passage to roof rainwater outlets in connection with ice formation
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WO2006104621A2 *Feb 24, 2006Oct 5, 2006Bachman James ESnow and ice resistant gutter system
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U.S. Classification52/94, 52/11, 392/432, 62/272, 52/1, 219/213, 52/173.1
International ClassificationE04D13/076, E04D13/10, H05B3/00
Cooperative ClassificationH05B3/00, H05B2214/02, E04D13/103, E04D13/0762
European ClassificationH05B3/00, E04D13/076A, E04D13/10A