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Automatic Screw Feed Air Gun Nose Piece

IP.com Disclosure Number: IPCOM000082002D
Original Publication Date: 1974-Sep-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Bode, FJ: AUTHOR

Abstract

The illustration displays a power operated screwdriver and the screw retaining apparatus, which provides for the automatic feeding and driving of a screw into a receiving member. It should be understood that screw 10 is illustrated as a wood screw, but may be a machine screw and that the principle is the same.

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Automatic Screw Feed Air Gun Nose Piece

The illustration displays a power operated screwdriver and the screw retaining apparatus, which provides for the automatic feeding and driving of a screw into a receiving member. It should be understood that screw 10 is illustrated as a wood screw, but may be a machine screw and that the principle is the same.

The automatic screwdriver is provided with an input conduit 12 joining the screwdriver conduit 14. Screw 10 is fed through conduit 12 by positive air pressure and funneled by the shape of the coil spring 16 into a position, where the screw head is retained by the reduced diameter section 18 of spring 16. Screwdriver 20 is then moved axially to engage the slot 22 in the screw head of screw 10.

As the screw 10 is engaged with the receiving member it is driven by the screwdriver 20. The rotation of the screw head will act to cause spring 16 and particularly reduced diameter section 18 to unwrap, such as is well known among unwrapped spring clutches, to allow the passage of the screw 10 into the receiving member. The unwrapping action is supplemented by the pulling force of the threads engaging the receiving member.

The external housing 24 prevents abuse to the coil spring 16 and at the same time reduces the necessary space required for the screwdriver 20 to be used. A diameter of roughly twice the diameter of the screw head is all that is required to cause the screw 10 to be subject to power driving and automatic manipul...