Snowplow blade extension

Abstract

Snowplow blades can be immediately varied in length at one or both ends by providing extensions of the same shape as the blade, which extensions carry studs which are received in sockets, preferably lengthwise of the back of the blade. The studs are pinned in the sockets for quick and easy fastening and removal.

I claim: 
     
       1. The combination of a snowplow blade on a motorized vehicle, with a tubular socket which extends longitudinally of the blade on its back surface and which is an immovable part of the blade structure, and with a removable extension of a shape corresponding to that of the blade and from which projects a longitudinal stud fitting the socket for removably holding the extension in a working position beyond an end of the blade, and a locking device for preventing unintended motion of the stud out of the socket. 
     
     
       2. The combination of claim 1, with an extension for each end of the blade. 
     
     
       3. The combination of claim 1, in which the socket has an opening extending completely through and the stud is long enough to extend completely through the opening. 
     
     
       4. The combination of claim 3, in which the locking device is a pin, and in which the stud has a transverse hole to receive the pin for latching the stud against removal. 
     
     
       5. The combination of claim 4 in which a spring clip holds the pin against accidental displacement. 
     
     
       6. The combination of claim 5, in which there are two parallel sockets and studs for each extension. 
     
     
       7. The combination of claim 6 including a hammer pad on the extension for receiving blows for loosening a stuck extension. 
     
     
       8. The combination of claim 6, with an extension for each end of the blade. 
     
     
       9. The combination of claim 7, with an extension for each end of the blade. 
     
     
       10. The combination of claim 5 in which the pin and clip are chained to the snowplow blade.