New Type of Fireman’s Spanner
The new spanner illustrated herewith is suitable for use with both the common cylindrical type of lug on fire hose couplings and also on an improved form of lug which is curved in the direction of the length of the hose in order to properly ride over projecting sills, etc.
Referring to the accompanying illustrations Fig. 1 is an end view of a hose coupling with the spanner applied ; Fig. 2 is a plan view of the coupling and spanner; Fig. 3 is an end view of a coupling provided with cylindrical lugs and having the spanner applied; Fig. 4 is a sectional detail illustrating the form of the claws or lug-engaging part of the spanner; Fig. 5 is a sectional detail taken on the line 5—5 of Fig. 4; Fig. 6 is an end view of a coupling and shows applied thereto a different form of spanner having the improved claw; Fig. 7 is a detail illustrating the type of type spanner shown in Fig. 6 , in longitudinal section but with the spanner applied to a cylindrical lug rather than the convex type of lug shown in Fig. 6 and Fig. 8 is an end view of the spanner shown in Fig. 6.
If you are a current subscriber,login hereto access this content.
If you would like to become a subscriber, please visit ushere.
