Casco Products Corporation

Sun Chemical Corporation

John J Comerford

Peter J Lupoli

Brooke N Westover

Donald J Mattis

A one-piece clamping shell for electric cigar lighters, which comprises a rolled sheet-metal body of tubular configuration, having open ends and a reverse-bend clinched seam extending longitudinally between its ends. At one of its ends the body has a radially inwardly extending flange means configured as a one-turn helical thread, said flange means having notches in it, one of which is bounded by edges that are located in planes spaced axially apart an amount essentially equal to the pitch of said thread, thereby to constitute in effect a nut adapted to be screwed onto an externally threaded shell at the rear of the cigar lighter.

One-piece wrap-around clamping shell for cigar lighter

A composite clamping shell for securing the socket of an electric cigar lighter to a panel of an automobile, has a rolled sheet-metal body of tubular shape, with open ends and a clinched seam. Attached to the body is a drawn, sheet metal sleeve having a rolled screw thread. The body has inwardly displaced stop shoulders to position the sleeve, which latter has an annular out-turned flange abutting the stop shoulders. Edge portions of the body end are laid over the out-turned flange of the sleeve to hold it captive and prevent relative movement. The body is stamped out of a piece of flat sheet metal stock and thereafter rolled into the desired cylindrical shape. The sleeve is produced by drawing operations, from flat stock, reduced manufacturing cost is thus realized.

Method of making a composite clamping shell

A composite clamping shell for securing the socket of an electric cigar lighter to a panel of an automobile, has a rolled sheet-metal body of tubular shape, with open ends and a clinched seam. Attached to the body is a drawn, sheet metal sleeve having a rolled screw thread. The body has inwardly displaced stop shoulders to position the sleeve, which latter has an annular out-turned flange abutting the stop shoulders. Edge portions of the body end are laid over the out-turned flange of the sleeve to hold it captive and prevent relative movement. The body is stamped out of a piece of flat sheet metal stock and thereafter rolled into the desired cylindrical shape. The sleeve is produced by drawing operations, from flat stock. Reduced manufacturing cost is thus realized.

Composite clamping shell for electric cigar lighters

A two-piece clamp shell for an automotive electric cigar lighter of the type that includes a socket carried in a panel or other support surface of the vehicle and has a threaded inner end receiving energy through a snap-on fitting connected to the vehicle's electrical system. The clamp shell comprises a two-piece assemblage which can be applied to the socket from the underside of the panel, to secure the same in place. It includes a tubular, encircling body part and a nut part. The body part has a forward edge portion which engages the rear face of the support surface, and a rear edge portion which is engaged by the nut part, the latter having a thread mating with the socket thread, and abutments disposed forward of the thread. The rear edge of the body part is engaged by the abutments on the nut part during the clamping. A continuous forwardly-facing shoulder on the nut part provides a retainer lip over which the vehicle's snap-on electrical fitting can be forced regardless of the rotative position of said part. The nut part permits circumferential alignment of the body part with respect to the socket, for lighting requirements. Also, the nut part can be employed with body parts having different axial lengths to accommodate different support surfaces.

Two-piece clamp shell for electric cigar lighter

A two-piece metal clamping shell for electric cigar lighters of the type employed in automobiles and other vehicles wherein a socket is carried in an aperture of the vehicle dashboard or other panel and an igniting unit or plug is receivable in the socket. The clamping shell includes a cylindrical body member which encircles the cigar lighter socket and which is adapted to secure the latter in its operative position. The body member of the shell is disposed behind the dashboard, and retains the socket by its engagement with the rear surface of the dash. The socket has a threaded portion at its inner end, and a similarly threaded clamp ring is applied thereto with the said body member being disposed between it and the dashboard's rear surface. The clamp ring has a peripheral nest portion adapted to centralize the body member with respect to the socket, and is capable of being tightened on the socket so as to secure the latter in place. The invention is especially useful where small lamps are employed to illuminate the interior of the socket when the plug is removed. A keying arrangement on the rear surface of the dashboard and on the body member holds the latter against rotation, insuring the proper, desired orientation of the body member and lamp with openings in the socket whereby the latter does not block light from the lamp.

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Stamford, CT, United States of America

John J Comerford