B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 21/00 (2006.01) B25B 23/04 (2006.01) B25B 23/06 (2006.01) E04D 3/36 (2006.01) E04D 5/14 (2006.01) E04D 15/04 (2006.01) F16B 43/00 (2006.01)
Patent
CA 2008720
WASHER-DISPENSING AND FASTENER-DRIVING MACHINE AND STACKABLE ROOFING WASHER THEREFOR Abstract of the Disclosure A machine for fastening one or more layers of roofing material to an underlayment, and a stackable washer therefor. A chute receives a stack of such washers. A shuttle displaces a single washer to a separated position when moved in one direction, to which the shuttle is biased, releases the single washer when moved oppositely. A gate, which cooperates with camming surfaces on the respective washers, restrains the overlying washer in th stack against being displaced with the single washer and restrains the single washer from being displaced from the separated position. Various components are provided by linking a stand-up screw gun of a known type to the shuttle. The stackable washer is embossed so that each such washer and like overlying and underlying washers in a stack contact each other at three or more places, which define tangent planes intersecting planes defined by planar areas on such washers at angles more thant 45° but less than 90° whereby such washers are spaced from each other around their entire peripheries. Notches in the washers cooperate with ribs in the chute to ensure that a stack of the washers is oriented properly when fitted into the chute.
Beach John R.
Hasan Syed Riaz-Ul
Hindman Craig Allan
Noren Donald W.
Santi Ernest Scott
Finlayson & Singlehurst
Omg Roofing Inc.
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