US150678A

US150678A - Improvement in handsaw-handles

Info

Publication number: US150678A
Authority: US
Publication date: 1874-05-12
Anticipated expiration: 1891-05-12

Description

c. EssVENHAnDT.

Hand-Saw Handles.

Patented'May 12. 1874.

c NITED STATEs PATENT OFFICE.

CHRISTOPHER EISENHARDT, OF PHILADELPHIA, PA., ASSIGNOR TO HENRY DISSTON, HAMILTON DISSTON, AND ALBERT H. DISSTON, OF

sAME PLAGE. i. l

IMPRovEMENT IN HAND'sA'w-HANDLES.

Specilication forming part of Letters Patent No. 150,678, dated May 12, 1874; application filed February 23, 1874. f

the application of more force is required thank can be imparted to the saw by one hand--as,

y for instance, when the operation of ripping is practiced.

It will have been noticed that the ordinary handle of a handsaw is Well adapted to the operators right hand, by which alone the instrument is most generally manipulated; but

\ when it becomes necessary to apply additional force to operate the saw, asin ripping, for instance, the conveniences. afforded for grasping an ordinary handle with the left hand are most meager and unsatisfactory-so much so that the operator is compelled to seize the upper portion of the handle between his lingers and thumb, which embrace the opposite sides only of the said handle, and the operator can never exert the full power of his left arm through his iingers and thumb When occupying this position with any satisfaction or comfort to himself.

In my improved handle the recess e of the opening A is extended so far beyond its ordinary limits that the operator can introduce the thumb of his left hand into the recess from one side of the handle and bend his thumb upward to the opposite side, and this without touching the joint of the foretinger of his right hand with the joint of the thumb of his left hand, for it is most essential that there should be no rubbing of these joints together. A rounded shoulder, h, is formed ou the upper edge of the handle at the point shown, so as to afford a rest for that portion of the palm of the left hand which is adjacent to the lower joints of the rst and second fingers.

By this conformation of the handle with special respect to the operators left hand he is enabled to exert the full force of his left arm without inconvenience.

I claim as my invention- As an article of manufacture, a saw-handle provided with the recess c and rounded shoulder h, in the manner and for the purpose specitied.

In testimony whereof I have signed my name to this specication in the presence of two subscribing witnesses.

CHRISTOPHER EISENHARDT.

1Witnesses:

WVM. H. WRIGHT, J oEN A. NEFF.