US1558447A

US1558447A - Electromagnetic fishing tool

Info

Publication number: US1558447A
Application number: US513324A
Authority: US
Inventors: Chester H Beach
Original assignee: WISCONSIN ELECTRIC Co
Current assignee: WISCONSIN ELECTRIC Co
Priority date: 1921-11-07
Filing date: 1921-11-07
Publication date: 1925-10-20
Anticipated expiration: 1942-10-20

Description

Oct. 20, 1925.

C. H. BEACH ELECTROMAGNETIC FISHING TOOL Filed Nov. '7, 1921 w QQ Ww uw QM M MN NN W E QN Patented Oct. 20, 1925,.l

UNITED STATES PATENT OFFICE.

CHESTER H. BEACH, 0F RACINE, WISCONSIN, ASSIGNOB T0 WISCONSIN lElLIEC'IItIC COMPANY, A CORPORATION OF WISCONSIN'.

ELECTBOMAGNETI FISHING TOOL.

Application led November 7, 1321.

` To a whom it may concern.'

Be it known that I, CHESTER H. BEACH, a. citizen of the United States, residing at Racine, in the county of Racine and State of Wisconsin, have invented certain new and useful Improvements in Electromagnetic Fishing Tools, of which the following is a specification:

This invention relates to improvements in electromagnetic fishing tools, one object of the invention being to provide a. small portable tool of this character which may be used in and around automobile engines and machinery in general for picking up nuts, bolts,

" and other small metal parts which may fall into obstructed places out of reach for removal by hand and diicult of removal in any other way.

Other objects of the invention will be apparent from the following description, taken in connection withthe accompanying drawings, wherein one form of the invention is illustrated.

Figure 1 is a side elevation of a tool constructed in accordance with the present invention; and

Fig. 2 is a vlongitudinal sectional view, taken through the electroma net.

Referring more in detai to the drawings- 10 designates an ordinary electric cable or cord, provided, intermediate its ends, with a suitable switch 11. At one end the cord is provided with a connecting plug 12,

w which may either be of the single or double Contact type. At the other end of the cord the two leads 13 and 14 are connected to an electromagnetic coil 15, the central opening of which accommodates a bar or rod 16, of soft iron or the like. The coil is suitably' insulated and the rod 16 extends forwardly of the coil at its outer end, and is rounded at 16n at its tip. A ferrule 17, of brass or other non-magnetic material, is mounted on the cordlO and at one end 1s spun or crimped into the insulation of the cord, as at 17a. A suitable shell 18, also preferably of brass or some othernon-magnetic material, lits down over the soft iron rod 16 and the coil 15 and Serial No. 513,324.

engages the ferrule 17 at its inner end, the said shell being pressed or sweated into firm engagement with the ferrule in order to anchor same against displacement. In addition the rear edge of the shell may be soldered or otherwise 'secured to the Jferrule, if desired. The forward end of the shell 18 is apertured, as at 18, to permit of the forward end of the soft iron core 16 projecting therethrough, the latter being rounded, as above pointed out, at 16, this rounded portion conforming to the contour of the forward end ot the shell. In order to prevent accidental displacement of the soft iron core relatively to the shell and, further, in order to impart rigidity and ruggedness to the entire assembly, it may be founddesirable that the forward end of the core tightly fit the bore or a crture 18a inthe end of the shell.

From tie above. description it will be'observed that an electromagnetic fishing tool has been provided wherein the magnetic influence is exerted only at the exposed tip 16 of the soft iron core, the enclosing shell 18, of non-magnetic material, eliminating lateral attraction. This enables the operator in the use of the tool to lower the same through obstructed assagesinto direct contact with the artic e to be raised without such interference as would be occasioned in the event the tool were subject to or exerted lateral attraction. Another important feature of the present improvements resides in the general arrangement and assembly of the parts, the same being of such a compact naturethat the elongated enclosing shell is of substantially the same diameter as that ot the electric cable or cord 10. Thus the tool maybe employed in lifting articles from narrow passages and other obstructed places practically inaccessible in any other way.

It will be obvious to those skilled in the art that the present improvements are susceptible tc change and modification; and it is not therefore desired to restrict the same, except as defined in the appended claim.

That I claim is:

In a tool of the class described, an electric cable, a errule tightly fitted over said of said cable, and a core of magnetic material mounted in said coil with its tip rojecting into said aperture and lying ush 10 with the outer end of said shell. l

In testimony whereof, I have subscribed my name.

CHESTER H. BEACH.