US1894340A - Insulator pin - Google Patents

Description

A. O. AUSTIN Jail. 17, 1933.

INSULATOR PIN Filed Aug. 10. 1928 Patented Jana :UNITEB'sTA Tss PATENT orrlce ,1; ,mrmm' o. AUSTIN, or NEAR mnnnroN, onro, AssroNon, BY MESNEASSIGNMENTS,

'ro THE 01110 BRASS COMPANY, on MANSFIELD, 0310, A CORPORATION on NEW JERSEY "Application filed August 10, 1928 Serial No. 298,828.

This invention relates to insulator pins and has'for one of itsobjects the PIOV1S1OI1 of a .soft metal tip for insulator pins wh ch will remain firmly fixed to the pin and not be v a f loosened or distorted by the mechanlcal stress to which thepin is subjected.

A further objectis to provide soft metal tips for insulator pins having relnforcements of more rigid metal. A further object is to provide an insulator pin which shall be of improved construction and-operaftion. Other objects and advantages Wlll. ap-

V pear from the following. description.

The invention is exemplified in the combination and arrangement of parts shown in the accompanying. drawing and described 1n the following specification, and it is more .particularly pointed out in the appended 01811115. n I In the drawing:

Fig. 1 isa part elevation and part section showing oneform of reinforcing cage comprised in the present invention.

Fig. 2is a section on line 22 of Fig. 1. Fig. 3 is a section on line 33 of Fig. 1. Fig. lisa part elevation and part section invention applied t ereto.

showing another form of reinforcement.

Fig. 6 is a plan of the device shown in Fi 5. 'fiig. 7 is a view similar to Fig. 4 but showingl the reinforcement illustrated in Fig.

applied to a pin tip.

In providing a lead tip for insulator pins,

it has been customary to cast the lead tip overt-he end of the steel pin. Where the loads are 1i ht, thishas frequently been satisfactory. n manycases, however, there is little bond between the central steel pin and the lead tip so that the latter becomes loose on the steel center or flows.

of. a pin tip havi-n one embodiment of the.

Fi .(5 is a part elevation and part section inexcess of that required for the lead thread fitting jintothe pin hole of the insulator, it will be found that the lead will flow readily or loosen from the central spindle.

' Where lead tips are'applied to old pins in the field, it is practically impossible to amal gamatethe lead to thepin-tip. It is,'h wever, desirable to hold it. tightly to'the pin. This result may be accomplished by using an iron or steel metal cage or other reinforcing mem; ber" such as a pressed metal reinforcement or wire helix. These reinforcing members are preferably tinned or coated with "zinc or lead which will amalgamate with the mateis thick, may be used to advantage in'displace lngthe lead whichusually costs considerably more than steel or other reinforcing metal. In some cases, the reinforcing material will add suifici'ent strength so that a lead thread maybe formed inside a thimble, making'the reinforced'thimble removable. f

There are 'manyforms of the reinforcings which may be'provided with lugs or projections or'be so formed at diiferent points that it will center itselfduring the casting ofthe tip. The reinforcing has 'a large area in contact with the lead, and forms an eflicient bonding and reinforcing ofthe tip.

In the form of the invention illustrated in Figs. 1 to 4 inclusive, the numeral 10 des-' ignates the end of a metallic insulator pin, the end of the pin being roughened by means ofgrooves 11 formed therein. Other forms of irregular surfaces, may of course',be employed. A lead, or other soft metal tip, 12 is cast'upon the end ofthe pin 11 and has embedded therein a reinforcing cage 13. The

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h I 1,8 49 I I Q1 1 :f flf fl'lfifi i ff lama; (15mm scum, said pan le and having saidcoil mag p 180381. 11! place on the pm, thmm'. h cflgn'willheembeddedinthe ln besti mony whereof [have mp. The n perend of the name to this specification this 7th daybfl' lruygl f rab ly August, A.D;192A8h Q A r Pmvides m" holding e h My P wwb s he .1 11 Wag wwdfiu l h ively-fiti my wei ht of; the insulator 'lnd'line i h th togbgimfiorcingrcgethilhd in- I h yt ,een t ',p k 0 U V -mntmt'of mama with-fig pinin {a v If; I *n v ,wmhaid-wmpm.

A 4 Wwwwhm v v, fapid in th Lot 815,4! v p r i t a g; pmziziomv CERTIFICATE 0F CGRREGTIQN.

Patent N0. 5,894,343. January 17, 1933.

ARTHUR 0. AUSTIN.

it is hereby ceriified that. EHO!" appears in ihe printed spesification of the above numbered patent requiring csrrectien as follows: The name of the patentee "Arthur 6. Austin" slmuld be inseried at the end of the Era ving; and that the said Letters Patent shonlc be read with this correctian therein that the same may crmiorm to the record of the case in the Patent Office.

Signed and SfifllQd this 22nd day o August, A. D. 1933.

M. J: Moore,

(Seai) Acting (lommissimwr 0f Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1,894,340. January 17, 1933.

ARTHUR O. AUSTIN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: The name of the patentee "Arthur 0. Austin" should be inserted at the end of the drawing; and that the said Letters Patent should be read with this correction therein that the same may conform to tire record of the case in the Patent Office.

Signed and sealed this 22nd day o August, A. D. 1933.

M. J. Moore! (Seal) Acting Commissioner of Patents.

' Patent No. 1,894,340.

CERTIFICATE OF CQRRECTION.

January 17, 193-3.

ARTHUR 0. AUSTIN.

it is hereby certified that error appsars in the printed specification of the above numbered patent requiring correction as follows: The name of the patentee "Arthur 0. Austin" should be ifisettfid at the end of the drawing; and that the said Letters Patent should be read with this correction therein that the same may CDDl'GlTz] to the record of the case in the Patent Office.

Signed and sealed this 22nd day of August, A. I). 1933.

M. L Moore,

(Seal) Acting Commissioner of Patents.

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