Howard B Carstedt

US Patent:

42443199, Jan 13, 1981

Filed:

Aug 7, 1978

Appl. No.:

5/931369

Inventors:

Howard B. Carstedt - Loretto MN

International Classification:

B05C 502
B05C 1700

US Classification:

118411

Abstract:

Apparatus for applying fluid to articles. The apparatus comprises an applicator head, an internally defined cylinder interconnected with a source of fluid pressure, and a reciprocally displaceable piston disposed within the cylinder for selectively engaging articles to directly apply fluid thereto. The piston includes an output orifice at the outer extremity thereof adapted to contact an article when the piston is moved through a predetermined dispensing stroke. The orifice is in fluid flow communication with a dispensing fluid input source. In a single action embodiment the apparatus includes a return spring for resetting the piston after each dispensing operation, and in an alternative double action embodiment fluid pressure is utilized to automatically reset the piston at a preselected instant. A closure cap on the end of the applicator head opposite the output orifice carries a stop which limits the return stroke of the piston; and the cap is held in place by a mounting bracket used to support the applicator head.

US Patent:

41049837, Aug 8, 1978

Filed:

Aug 18, 1976

Appl. No.:

5/715443

Inventors:

Howard B. Carstedt - Loretto MN

International Classification:

B05C 502

US Classification:

118 2

Abstract:

Apparatus for automatically spot gluing printed sheets on a folding machine. The apparatus comprises an applicator head, an internally defined cylinder interconnected with a source of fluid pressure, and a reciprocally displaceable piston disposed within the cylinder for selectively engaging to be glued. The piston includes a glue output orifice adapted to contact a printed sheet to be folded and glued in a folded condition. The orifice is in fluid flow communication with a glue input source. In a single action embodiment the apparatus includes a return spring for resetting the piston after each spot gluing operation, and in an alternative double action embodiment fluid pressure is utilized to automatically reset the piston at a preselected instant. The spot gluer is located immediately in front of a stop bar which serves to stop moving sheets and buckle them between folding rollers.

US Patent:

40602362, Nov 29, 1977

Filed:

Feb 13, 1976

Appl. No.:

5/657874

Inventors:

Howard B. Carstedt - Loretto MN

International Classification:

B65H 2970
B65H 2904

US Classification:

271183

Abstract:

A method and apparatus for continuously bending or creasing sheet material as the material travels along a path. The invention creases and decurls the material; that is, compensates for a natural tendency to curl in the opposite direction, and serves as a drag on the trailing portion of the sheet material, thereby providing positive sheet control. It is characterized by an air pressure gradient which forces the material into a zone between a pair of parallel, spaced, elongated support surfaces as the material is drawn over the support surfaces.