The ornamental design for adaptor for wipers of automobile, as shown and described.
FIG. 1 is a perspective view of an adaptor for wipers of automobile.
FIG. 2 is a front elevational view thereof.
FIG. 3 is a rear elevational view thereof.
FIG. 4 is a left side elevational view thereof.
FIG. 5 is a right side elevational view thereof.
FIG. 6 is a top plan view thereof.
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a reduced perspective view of an adaptor for wipers of automobile shown in reference to the wiper. The broken line showing of the wiper is for illustrative purposes only and forms no part of the claimed design.