US1454444A

US1454444A - Wrench

Info

Publication number: US1454444A
Application number: US538663A
Authority: US
Inventors: Komnenus Angelos
Original assignee: ELIZA O DAY
Current assignee: ELIZA O DAY; ELIZA O'DAY
Priority date: 1922-02-23
Filing date: 1922-02-23
Publication date: 1923-05-08
Anticipated expiration: 1940-05-08

Description

May 8, 1923. 1,454,444

A. KOMNENUS WRENCH Filed Feb. '25, 1922 fl -I- I L "'lh Tim "'l mmilimlmwlmllllmllml ag? v INVENTOIR A TTORN Y ltday 8,

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ANG-ELOS KOB'INENUS, OF NEW YORK, N. Y., ASSIGNOROF ONE-HALF T0 ELIZA QDAY,

0F DEAL, DIE-"W JERSEY.

WRENCH.

Application filed February 23, 1922.

To all whom it may concern:

Be it known that I, Anonncs llonrnnnos, a subject of the King of Greece (who has declared his intention to become a citizen of the United States), residing at New York city. in the county or" New York and State of New York, have invented certain new and useful Improvements in renches, o1 which the following is a specification.

My invention relates to improvements in.

wrenches and it is my object to provide the Robert wrench of U. S. Patent No. 1.407.578, dated February 21. 1922, with means where by it will easily and quickly engage. a pipe or other object and which will freely release it after the pipe has been screwed home.

It was found in practical use that the Robert wrench would not easily engage a pipe. especially in confined spaces and that once engaged it could not be released except by the application of great force and that it let suddenly and violently and generally struhk and injured nearby objects. When used on the end of an extension it was almost impossible to engage or release it.

I have overcome these di'diculties in the manner illustrated in the accompanying drawing in which Fig. 1 is a side view of my improved form or the Robert wrench with the jaws closed; Fig. 2 a too View of the structure of F 1; and Fig. 3 a side View with the jaws engaging a pipe.

The Robert wrench, as made and sold, comprises a handle 1 with an integral jaw 2 and a co-operating jaw 3 connected to the jaw 2 by links i.& and 5--5 secured to the jaws by pins 6, 6, 6. 6. These links are nonparalleh the pins on the jaw 3 being further apart than those on the aw 2. Neither are the links of equal length, the link 5 at the rear being longer than the link 4. A spring 7 connects the links and tends to draw the jaws together, their closing movement being limited by a stop 8 on the jaw 2. I

When the wrench was to be engaged with a pipe or other object the jaw 3 had to be laid against one side thereof and the jaws forced apart by pressure on the handle against the tension of the spring 7 which was Very hard to do at arms length. When lel links Serial No. 538,663.

the wrench was to be removed a reverse pressure had to be applied to the handle and at the same time it had to be pulled rearwardly but the toothed jaws were held to the pipe by the spring pressure and considerable force had to be applied whereupon it slipped and let go suddenly generally knocking a hole in the plaster or otherwi e injuring nearby objects.

I have overcome all these difliculties by providing the jaw 3 with a rearwardly ex tending finger piece 9 which preferably terminates in a hook l0 lying close to the ban die 1. This enables a workman to place his forefinger or thumb of the hand holding the wrench on the finger piece and by a slight rearward pull to open the jaws to any desired extent to engage a pipe or other object. lVhcn the wrench is to be removed a slight rearward pull on the finger piece opens the jaws and enables the wrench to be easily removed.

When the wrench is used on the end of an extension (a short piece of pipe being generally used for this purpose) to enable otherwise inaccessible places to be reached a piece of wire or string can be fastened to the hook 10 and the jaws quickly and easily opened be employed to give the same result but that shown has been found in practice to be the best form for one hand operation of the wrench.

I claim 1. A pipe wrench comprising a handle and integral jaw, a co -operating jaw. non-parab of unequal len th connecting said jaws, a spring tending to pull the jaws together and a finger piece extending rear-j wardly along the handle from the co-operating aw.

2. A pipe wrench as set forth in claim '1 in combination with a hook-like extension on the end of the finger piece.

In testimony whereof I have affixed my signature.