The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 1983
Filed:
Mar. 23, 1981
Applicant:
Inventor:
John F Ewig, Worcester, MA (US);
Assignee:
Parker Manufacturing Company, Worcester, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23D / ; B23D / ; B27B / ;
U.S. Cl.
CPC ...
145 / ; 1451 / ;
Abstract
A hacksaw with an improved mechanism for adjusting the tension on the blade. The mechanism includes a lever for vertically moving a rod to pivot a rocker arm to place tension on the rocker arm-held blade. The rod has an adjustment knob at its lower end to precisely select final blade tension. The lever has a latch means for securely locking the lever closed, and the latch means has a safety feature which prevents accidental and sudden unlocking of the lever.