Pierre Allain (latchless) (v1)

Pierre Allain
(latchless) (v1)

Name:Pierre Allain (latchless) (v1)
Locking Type:n/a
Unlock Style:n/a
Shape:asymmetric D
Nose Guard:none
Gate Shield:full
Weight:60 g
Dimensions:Length: 107 mm
Width: 52 mm
Gate Opening: 18 mm
Other Markings:Forged: PIERRE ALLAIN | BREVETTE S.G.D.G
Collection Criteria:★ Manufacturing, Engineering, or Design
★ Historically Interesting or Iconic
Summary:non-load-bearing gate, early design
Description & Commentary:

(research ongoing) Pierre Allain was one of the earliest carabiner manufacturers, selling out of his shop in France. This model only has slanted faces at the gate, not a hook & pin or similar arrangement to allow the gate to share load when the carabiner is subjected to a load.

Also, reports in the National Speleological Society (NSS) and Mountain Safety Research (MSR - yes that MSR) newsletters indicated that climbers had specifically experienced low-load failures of similar style of "carabiner" when loaded along the minor axis. Unlike those that failed, this example has a small stud on the gate, which may or may not provide additional minor axis strength.

Technically, without a load-bearing gate, I do not consider this a carabiner - rather a snap‑hook. But it's just too neat of an artifact to not include here.