| 摘要 |
Two intersecting slots are provided in the longitudinally spaced blade connecting parts of the hacksaw frame. One of the intersecting slots extends transversely from one lateral side of the blade connecting frame part to the center thereof. A hole is provided extending from the base of the slot, opening to the other lateral side of the blade connecting frame part. A second hole is provided therein extending from the base of the slot transversely into the frame part. The other intersecting slot extends in a longitudinal direction in the blade connecting frame part. The end of the hacksaw blade is fitted in the other slot and the anchor hole in the end of the blade is aligned with the second mentioned hole. A "U" shaped connecting pin is fitted in the transverse slot so that one leg of the pin passes through the hole and the end of the leg extends distally spaced from the other lateral sides of the frame part. The other leg of the connecting pin is truncated and extends into the second hole. The truncated leg extending into the second hole passes through the aligned anchor hole of the hacksaw blade end thereby securing the hacksaw blade to the spaced blade connecting parts of the frame. Spring means is anchored in the transversely extending slot to biasly return the connecting pin in blade locking position and also allow release of the blade by depressing the distally spaced end of the one leg against the bias of the spring thereby retracting the truncated leg from the second hole and the anchor hole of the blade end.
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