ART
BEAUTY & WELLNESS
CRAFT
CULTURE & HISTORY
ENTERTAINMENT
ENVIRONMENT
FOOD & DRINKS
REVERSE ENGINEERING
SCIENCES
SPORTS
TECHNOLOGY
WEARABLES
Air Hose: Couplings with Two-Bead Crimped Ferrules
A rubber hose becomes an air hose when couplings are fixed to its ends. John Keenan's fitting (US 4,453,746, 1984, for railway airbrake hoses) has a stem with a stop flange, ridges and a bulbous tip; a ferrule is crimped over it in two beads, the second ending at the bulb's widest point and flaring out so it cannot cut the hose. If a ferrule fails in the field, a band clamp over the ridged recess holds the hose without the crimping machine.
The patent gives no sizes or materials. The picture: the patent's Fig. 3.
Intermediate
1 hour
Instructions
1
1
Cut the hose to length
Cut the hose to length
Ours: cut the rubber hose square to the length needed.
Materials for this step:
Rubber Hose1 pieceTools needed:
Utility Knife2
2
Push the hose onto the coupling stem
Push the hose onto the coupling stem
Slide a ferrule over the hose. By hand, push the hose end over the coupling's stem (52), past the bulbous tip (58) and the ridges (62), until it butts against the stop flange (54).
Materials for this step:
Hose Coupling1 piece
Hose Ferrule1 piece3
3
Crimp the ferrule in two beads
Crimp the ferrule in two beads
Crimp the ferrule into two beads. The first (68) runs from the recess behind the flange (56), over the flange, to the recess above the ridges. The second (70) ends at the bulb's widest point; the ferrule's end flares out so it cannot pierce the hose.
Tools needed:
Hose Crimping Machine4
4
Fit the other end
Fit the other end
Fit the hose nipple's stem into the other end of the hose the same way: a ferrule, pushed to the flange, crimped in two beads.
Materials for this step:
Hose Nipple1 pieceHose Ferrule1 pieceTools needed:
Hose Crimping MachineMaterials
4- 1 piecePlaceholder
- 1 piecePlaceholder
- 1 piecePlaceholder
- 1 piecePlaceholder
Tools Required
2- Placeholder
- Placeholder
This blueprint makes
Related Blueprints
These blueprints share knowledge with this one — techniques, materials, or principles that connect them in the learning graph.
CC0 Public Domain
This blueprint is released under CC0. You are free to copy, modify, distribute, and use this work for any purpose, without asking permission.
Support the Maker by purchasing products through their Blueprint where they earn a Maker Commission set by Vendors, or create a new iteration of this Blueprint and include it as a connection in your own Blueprint to share revenue.