Endless belt power transmission systems or components – Means for adjusting belt tension or for shifting belt,... – Pulley shifter
Patent
1988-09-26
1989-11-28
Massie, Jerome W.
Endless belt power transmission systems or components
Means for adjusting belt tension or for shifting belt,...
Pulley shifter
474117, 400320, B41J 1920, F16H 714
Patent
active
048834459
ABSTRACT:
A device is disclosed for tensioning of a pulling element (1) of a printer and in particular of a matrix printer, for a back and forth motion of a part (5) or of a carriage includes a first deflection roller (11) and a second deflection roller (12). A wedge surface (15) is furnished, which upon increasing inclination (16) is slidable in a direction parallel to a frame surface (17) disposed perpendicular to the pulling direction (18) and which wedge is subjected to the force of a tension spring (22) such that the adjustable second deflection roller (12) serves the purpose of an increase of the tensioning force in the pulling element (1). In order to provide a substantially rigid system, which also takes the production stretching of a pulling element (1)--pulling cord--into consideration, it is disclosed to rotatably support the second deflection roller (12) with its roller bearings (24) in a lever (13), formed as a covered casing (23) and that an adjustable cam ( 25) resting at the wedge surface (15) is rotatably supported in the casing (23) and that the cam position can be fixed.
REFERENCES:
patent: 4395151 (1983-07-01), Krenz
patent: 4484485 (1984-11-01), Matsuhisa
patent: 4678354 (1987-07-01), Olsen
patent: 4761154 (1988-08-01), Beauchamp et al.
IBM Technical Disclosure Bulletin, "Proportional Spacing and Justification", Hickerson, vol. 8 No. 5, 10/1985.
Gomoll Gunter
Hauslaib Wolfgang
Kasper Horst M.
Mannesmann Aktiengesellschaft
Massie Jerome W.
Smith Matthew
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