US1524149A - Fuse terminal - Google Patents

Description

Jan. 27-. 1925 Q 7 1,524,149

H. T. PAISTE FUSE TERMINAL Filed March 31 1922 PatentedJamZZ19125. p

UNITED STATES PATENT OFFICE.

HENRY PAISTE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO H. T. PAI STE COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- mum cross sectional area such as will insure. fusin VANIA.

FUSE TERMINAL.

Application filed March 31, 1922. Serial No. 548,492.

To all 16710772 it may concern: I

Be it known that I, HENRY T. PAIsTn, a citizen of the Un ted States, residing 1n Philadelphia, Pennsylvania, have invented Fuse Terminals, of which the following 1s a specification.

One object of my invention is to' provide a novel form of fusible element and terminal therefor particularly designed for use in fuse plugs, and which, in addition to beingof such construction as to permit of its economical and inexpensive manufacture,

' shall be ofsuch a nature that it may be easily and conveniently assembled in or applied to a fuse plug, fuse capsule or other suitable supporting or receiving structure.v

Another object of the invention is to provide a novel form of terminal for quickly and conveniently connecting one end of a fusible link to a fuse plug capsule, fuse plug, or cutout device, which shall be simple, substantial and of such a nature as to permit of the quick and convenient renewal of the fusible element or link when this has been fused by an excessive current flow or otherwise broken.

These objects and. other advantageous ends I attain as hereinafter set forth, reference being hadto the accompanying drawiugs, in which,

Figs. 1 and 2 are respectively an edge elcvation and a section on the line 2, Fig.

1, illustrating a fusiblelink and terminal therefor constructed in accordance with my invention Fig. 3 is a plan of the device shown in FigslandQ;

Figs. at and 5 are vertical longitudinal sections illustrating my invention as applied. to a well known form of fuse plug; and

Fig. 6 is a verticalsection illustratingmy invention as applied to a fuse capsule;

In Figs. 1 and 2 of tlieabove drawings, 1

represents. a thin elongated strip of rela-' tively fusible sheet; material such as zinc, copper or other metal, or alloy, jhaving 'onc end laterally extendedto constitute ahead 3, adjacent which the, body of the strip is notched or otherwise cut away astindicated at 2.2 so that it has a predetermined miniat this point upon theoccurrence of a predetermined current flow.

I Theterminal plate for the fusible element f is provided by an elongated body of sheet metal, such as brass or copper, folded upon itself at substantially'its middle point to providea body portion 4: whose ends 5 the width of the head 3 of the fusible element which is designed to lie between the folds of said body after said element itself has been extended through z slot 6 at the middle of the apex of said portion 4:.

The length of the head 8 is slightly greater than the height of the terminal body a and said head is formed with a kerf'or cut about midway of its top edge to provide two tongues 7'T which are preferably bent in opposite directions so as to lie parallel and in engagement with the top or outer surfaces of the wings 5 of the terminal member l. Obviously both the fusible element 13 and the terminal element -l5-5 may be stamped or struck up from suitable pieces of sheet metal and may be thereafter. assembled in the forms shown in Figs. 1 to 3 inclusive. They are then available for sale for manufacturing or renewal purposes or they may be at once applied to fuse plug bodies such as indicated at 8 in Figs. 4 and 5;

These bodies arc customarily made of vitreous insulating material such as porcelain and each has at its closed end an elongated opening through which may be placed the fusible element 1 and the body portion at of the terminal plate. Thereafter the free endv of said fusible element is-bent laterally andextended. through a notch or recess 9 adjacent the open end of the body 8, on the outer portion of which it is soldered or oth erwis'e electrically connected to the threaded shell 10 customarily mounted thereon. The wings 55 ofthe terminal plate lie centrally upon the outer face-of the closed end of the-fuse plug body so as to constitute one of the terminals of said plug, whose Second terminal" is constituted by the threaded shell 10.

is applied to a porcelain capsule body 12 as shown in Fig. 6, so that its body 4;. extends through the closed end of said capsule body; the fusible element, after passage through an edge notch 13-, beingbent vback over the outside surface of said capsule andw finally projected outwardly upon the shoulder portion 14 thereof.

In this particularjcase the fusible element I with its terminal plate may be quickly applied to and assembled with the capsule with aminimum of labor, and even when used with a fuse plug of the ordinary construction, may likewise be assembled with the utmost convenience and at'a minimum within the and of the body.

expense. In the event of the fusing of the element 1 by reason of excessive current flow or for any other reason, it may be replaced with the utmost ease in a minimum of time and with but little expense.

.: I claim:

' 1'. A terminal plate consisting of a body of sheet metal folded into substantially U- shaped form and having a slot at its apex; and a fusible link havin a head located 2. A terminal plate consisting of a folded bod of sheet metal having a laterally extending contact portion; with a fusible link extending through the, folded body and in.- cluding a head portion lying between the parts of said body. I Y

. 3. A terminal plate consisting of a folded body ofsheet metal having a laterally extendin' Contact portion; with a fusible link I I extendmg through the folded body and in:

eluding a head portion lying between the parts of said body, a portion ofthe head of the link being turned over said contact portion of the body.

4. The combination of a fuse terminal consisting of two contact portions and a substantially U-shaped body portion joining said contact portions; and a fusible link having one end located in the shaped body portion.

5. .The combination of a terminal plate ing a head lying between the side portions I of the body, said head having portions turned over the contact parts of said plate. '7. A fuse terminal plate consisting ofv a substantially U-shaped body of sheet metal having the ends of its side members laterally extended in the same plane to form contact parts, there being an opening through the apex portion of the body for a fuse link.

HENRY T. PAISTE.

Images