| 摘要 |
Apparatus for applying shingles to a roof having a guidetrack connected to the roof, a pair of guiderods slidably connected to the guidetrack in perpendicular extension therefrom, a primary carriage mounted to the guiderods for movement parallel the guidetrack, a gun carriage mounted within the primary carriage, but independently supported therein for concomitant horizontal motion therewith and a chute for conveying shingles placed thereon beneath the gun carriage.
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