. Railway mechanical engineer . onomy Parallel Ruier Attachment Applied to Drawing Board binding posts are made of brass accurately machined, polishedand lac(]ucred The attachment is accurate, as both endsof thf straight edge are attached to the same wire and canbe moved back and forward only simultaneously. Thestraight edge can be lifted clear of the board for changingdrawings without loosening any thumb nuts, and can be setat any angle across the board by thumb nuts on the bindingposts. The entire arrangement is simple, durable and easilyapplied. BOYERGRIP FOR PNEUMATIC HAMMERS The Boyergrip
. Railway mechanical engineer . onomy Parallel Ruier Attachment Applied to Drawing Board binding posts are made of brass accurately machined, polishedand lac(]ucred The attachment is accurate, as both endsof thf straight edge are attached to the same wire and canbe moved back and forward only simultaneously. Thestraight edge can be lifted clear of the board for changingdrawings without loosening any thumb nuts, and can be setat any angle across the board by thumb nuts on the bindingposts. The entire arrangement is simple, durable and easilyapplied. BOYERGRIP FOR PNEUMATIC HAMMERS The Boyergrip is a device recently brought out by theChicago Pneumatic Tool Company, Chicago, whichcombines a convenient hammer grip with an absolutelysafe set retainer. As shown in the illustration, it tits overthe end of the riveting hammer and enables the operator tosecure a firm grip without grasping the heated cylinder. Thisarrangement makes the operation of the hammer more con-venient and allows the workman to drive hot rivets without. Combined Hammer Grip and Set Retainer danger of burning his hands. The device also provides anunobstructed view of the work from all angles. The Boyer-grip is made of steel and is practically indestractible. Amodified form of this device, which is well adapted foruse on chipping and calking tools has also been placed onthe market. •iri
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
