US1514288A - Electrically-heated roller - Google Patents

Description

Nov. 4 1.924,

L. P. HYNES ELECTRIGALLY HEATED ROLLER Filed Jam 3, 1923 5mm/nto@ LEE P. HYNS CIK Patented Nov. 4, 1924.

` UNITED STATES LEE r. HYNEs, or ALBANY, New Yor 1,514,288 PATENT QFFICE.

ASSIGNOR TO CONSOiLDATED-CAR HEATING COMLANY, OF ALBANY, 'NEN Y0.... r., fr CORPO ATION OF TEST VIRGINIA.

ELECTRICALLY-HETED ROLLER.

Application filed January 3, i923.

To all whom t mc/z/ concern.'

Be it known that I, LEE P. Hynes, a citizen of the United States, residing at Albany, in the county of Albany and State ofyNew York, have invented certain new and useful Improvements in Electrically-Heated Rollers, the following being a full, clear, and exact disclosure of the one form of my invention which I at present deem preferable.

For a detailed description of the present form of my invention, reference may be had to the following specication and to the accompanying drawing forming` a part thereof, wherein- Fig. l is a view of my roller, partly in section;

Fig. 2 is a section of the heater.

l/.ly invention relates to an electrically heated roller wherein a group of parallel and relatively stationary heater coils are contained within a rotating roller, the said coils being mounted on a central standard and distributed around the interior surface of the roller and in close proximity thereto. The heater coils are, moreover, encased individually in a metallic sheath from which they are insulated bya tube of porcelain or other refractory material.

Referring to thek drawing, A represents a hollow roller provided at each end with a journal bearing B. lt may be rotated in any desired manner, for example by a pulley C. Through each bearing extends a short length of hollow shafting D. On the inner end of D is a spider E which is shown as provided with `four radial arms, though a greater or less number may be used or the spider may be of disc form or otherwise suitable for supporting the heater coils eccentrically to the cylinder axis. rThe corresponding spiders at the opposite ends of the roller are joined by a series of connectors each consisting` of a metal tube F. Since there are four of these eccentric connectortubes F they constitute, together with the spiders, a rigid framework oi.' metal extending between the short shafts D. As appears in Fig. 2, the tube F is rolled down to a reduced diameter with radial ribs f, f projecting therefrom and screw-threaded at each end. Inside of tube F is an insulating tube G of porcelain or other refractorvsubstance, preferably in sections. Within tube G is extended a heating coil H permanently con- Serial No. 610,459.

nected at each end to a terminal rod P having an enlarged inner end on which is screwed an insulating bushing K. The bushing K is screwed into the metal tube F and at its outer end has a recess in which is seated a flanged plug l between Vwhich and the bushing is gripped the spider arm lll. The outer end of hollow shaft D is secured in a suitable carrier such as a standard S and the lead-wires T are passed through it and connected to the opposite terminal-rods l). By this arrangement the heater-coils are contained inside of the connector-tubes F and insulated therefrom` being thereby protected from accidental Contact with the metal roller A in the event of breakage of the heater coil, the presence of some foreign substance or other cause. lVhile l have illustrated the roller A as mounted on standards S and operated by a pulley C, the roller, together with its shaft D and interior tubular framework, may travel over a surface on which the roller presses. In that case there is the same feature of a roll which rotates with respect to its internal heating coils.

That l claim as new and desire to secure by Letters Patent is:

l. An electrically heated roller comprising a normally stationary shaft, a series of electric heaters secured to said shaft in eccentric relation thereto and extending parallel with the axis thereof, and a hollow cylinder mounted on said shaft and rotatable around said heaters.

2. An electrically heated roller comprising normally stationary hollow shafts through which lead-in wires may pass, spiders on said shafts, metallic connectors between the spiders and eccentric thereto, heating coils carried by the respective coils and insulated therefrom, and a hollow cylinder mounted on said shafts and rotatable around said heating coils.

3. An electrically heated roller comprising normally stationary hollow shafts through which the lead-in wires pass, a series of tubular connectors extending parallel to the shaft axis and supported by the shafts eccentrically, heating coils within said connectors, and acylinder mounted on said shafts and rotatable around said connectors and coils.

4. An electrically heated roller comprising normally stationary hollow shafts through which the lead-in wires may pass,

. coils.

5. An electrically heated roller comprising normally stationary hollow shafts through which the lead-in wires may pass,

spiders on said shafts, tubular connectors` between the spiders and eccentric thereto, tubes of refractory insulation in said connectors, heating coils in said refractory devices, and hollow cylinders mounted on said shaft and rotatable around the connectors and heating coils.

GQAn electrically heated roller comprising a hollow cylinder and an interior electric heater therefor consisting of hollow shafts stationary with respect to the cylinderthrough which the lead-wires pass and around which the cylinder rotates, a hollow eccentric connector parallel to the cylinder a-Xis and supported on the said shafts, a refractory insulating tube inA said connector, an insulating bushing in the end of the connector, a heating coil in said tube, a terminal rod connected to one end of the coil and passing through the bushing and insulated supports between the hollow shafts and said connector. n

7. An electrically heated roller comprising ak hollow cylinder and an interiorelec-V tric heater therefor consisting of hollow shafts around which the cylinder rotates and through which the lead-wires pass, a series of eccentric metallic tubes spaced around the inside surface of the` cylinder, metallicsupports therefor, a heating coil in each tube insulated therefrom, a bushing of insulation through which passes a terminallrod connecting` with said coil and metallic supports for said metallic tubes connecting with said bushings.

8. An electrically heated roller comprising a group of parallel electricalv heaters, means rigidly supporting the same at their ends, a cylindrical. casingV enclosing said heaters and mounted to rotate about them, and'means whereby the heaters may be connected vwith a source of electrical energy.

9,`An electrical heated roller comprising groups of parallel electrical heaters, spiders rigidly supporting the ends of said heaters, a cylindrical casing enclosing said heaters, and means carried by thespiders for rotatably supporting said casing.

l0. An electrically heated roller comprising groups of parallel electrical heaters, spiders rigidly supporting the endsof said heaters, a cylindricalcasing enclosing said heaters, and shafts extending from said spiders, said casing being rotatably mounted on said shafts.

l1. An electrically heated roller comprising supports having insulating bushings, heaters supported by said bushings in parallel relation, a cylindrical casing enclosing said heaters and mounted to rotate vabout them, and means whereby said heaters may be connected with a source ofv electrical energy. y

l2. An electricallyV heated roller comprising supports, insulating bushings, plugs securing said bushings to said supports, a group of parallel electrical heaters having their ends engaging said bushings, a `cylindrical casing enclosing said heaters and mounted to rotate about them, and means whereby the heaters may be connected with a source of electrical energy.

Signed at Albany, county of Albany, State of New York, this 29th day of December, 1922.

LEE P. HYNES.

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