Origin of hard rubber
Examples from the Web for hard rubber
His hand reached upward and lifted the hard-rubber receiver from the hook.
We have, then, a glass or hard-rubber jar containing two lead plates and a solution consisting of water and sulphuric acid.ABC of Electricity|William Henry Meadowcroft
He took one step forward as Loris swished across the sitting-room, lifted the hard-rubber receiver and voiced a soft, “Hello!”
He groped along the wall for the electric switch, and found only the shank of it—the hard-rubber button having disappeared.The Destroying Angel|Louis Joseph Vance
The touch key ended in a hard-rubber knob which could be brought in contact with the skin of the subject.