US1446067A - Method of connecting insulator units - Google Patents

Description

` Patented Feb. 20, 1923.

UNITED STATES FRANK H. REAGAN, OF ROCHESTER, NEW TO LOCKE INSULATOR CORPORATION, TION. OF MARYLAND.

1,446,067 ICE.

Yann, Assreivon, BY MESNE ASSIGNMENTS, or BAL'HMORE, MARYLAND, A CORPORA- PATENT- OFF METHoD or ooNNEc'rING INSULATen UNITS.

Application filed March 10, 1921. Serial No. 451,211.

5 and-useful Improvements in Methods of Conrecess formed in the insulating element, the 'f' necting Insulator Units; and I do hereby decla-re the following to bea full, clear, and exactfdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention'relates to a method ofl con'- nectmg a bolt to an insulating element in which I employ novel means to maintain the boltin a definite position with reference to the insulating element during the in-,r

terval of time required for the cementitious vsubstance. which unites the bolt to the insulating element to set or harden.

The primary object of the invention, broadly stated, is to adapted to be assembled with the bolt prior tothe insertion of the said bolt within the said member being arranged to support the bolt in a predetermined position with reference to the insulating unit until the cement which is' introduced lnto the recess has hardened sufiiciently to'maintain the bolt in its 4proper position. Another object of the inlvention is to'provide an inexpensive member convenient to manufacture and which. Amay be readily assembled with "the bolt to perform the function set forthabove. These and other objects will appear from the detailed description of the invention, particularly when taken in connection with the ac= companying drawings wherein I have illustrated aninsulator 'connected in accorda-nce with the novel method which I lhave devised. Y

Figure 1 is a View in transverse vertical section'of a suspensioninsulator unit showing the eye bolt connected thereto, the insulator being in an inverted position.

Figure 2 is a section on line 2-2 of Fig. 1'. Figure 3 is a perspective view of the novel means for temporarily maintaining the eye bolt in assembled position.

Great difficulty has been' experienced in the past in maintaining bolts in proper assembled relation with the insulating elements during the time interval which elapses between the linsertion of the bolt into provide a membery the recess inl the insulator and the hardening or crystallization of the cementing substance which is interposed between the bolt and the adjacent portion of the wall of the recess in theinsulating element. In lsuspension insulator units where the necessity for accurately maintaining' the'eye'fbolt par-f allel to the vertical axes of theinsulating elements is of vital importance, it has been most diiiicult to temporarily maintain the eye bolts in this position. This is due to the general custom 0f using an eye bolt, which has a rounded end, on the portion which enters the recess in the insulating element.

This rounded end l portion and the overwe1ghted outer end,

ence in the diameter of the bolt'and the diameter of the recess, often result in the eye b olt changing from its correct vertical posivtion to a position at an angle to the vertical axis of the insulator; and if the cement hardens with the bolt in this inclined position the insulator is considered defective. It 'has been found that the cost ofcorrecting the defects caused by the wrong-position of the bolt exceeds' the cost of the insulator, and

consequently insulators in which the bolts are wrongly assembled are, as a rule, scrapped. By following the method which I have invented it is possible to prevent all danger of the eye bolt being assembled at an 4' angle to the vertical axis. of the -insulating element and this high loss in manufacture is consequently avoided. l

In carrying out my process Ipreferably provide a slotted washer er disk 1 which has been illustrated as circular in outline and provided with a 'centrally disposed' opening 2 equal in size to the cross sectional' area of the eye bolt 3 at a predetermined point. Preferably thewasher l is made from pasteboard or some similar frangible substance to permit of its readyy removal from the yeye bolt. Since the eye bolt 3 is provided with enlarged ends land 5, respectively, I construct the diskl as a split ring so as to permit the same to be assembled with an eye bolt at a point intermediate the ends thereof.

`I preferably assemble the washer l with the eye bolt and then invert the insulating element 6 into a osition corresponding to that illustrated in `ig. 1, and introduce into the cavity 7 thereof a fluid cementing subtogether with the differ-- nel l movement o t the dislr on the insulator.

o malre the disli.' or Washer insulating element 6 adjacent the mouth ot the opening 7.. lin this position it will be observed that the headed end 5 of the eye bolt is spaced a short distance from the bottom of the cavity 7 and that the portion 5 is immersed in the cement 8. lt is desirable to provide some means other than the trictional resistance between the under Jrace of the disk or Washer and the ot the insulator body to prevent lateral convenient ivay to prevent this sliding` is to lit within the concentric ring toi-med by the inner petticoat 9 ot the insulator. By this construction it will be obvious that the eye bolt isI not only maintained tion to the lovver portion ot the recess 7 but is maintained on the vertical axis ot the insulating element against all possible chances of displacement during the interval required tor the hardening ot the cement. After the cement has hardened the washer or disk 1 may be removed if desired, although owing to its location it has little or no etlect upon the electrical efficiency of the insulator' should it be lett in position.

l claim:

1. The method ot connecting a. bolt member to an insulating element having a recess therein tor the reception ot said bolt mem` ber, said method involving introducing a ce,- menting substance into said recess, provid ing said bolt member with means for en` gaging the insulating element at a plurality ot' spaced points and inally inserting said bolt member into said recess so as to cause the said cementing substance to surround a portion of said bolt member.

2. The method ot connecting a bolt to an insulating element having a recess therein tor the reception'ot said bolt, said method involving mounting on said bolt a removable member adapted to engage a-fplurality or spaced points on said insulator element, in-

adjacent surface ot suiicient size to4 in spaced rela' uid cementing substance into said recess,

Isaid recess to cause the said cementing substance to surround a portion ot said bolt.

3. The method ot connecting a bolt to a suspension insulating element provided with a centrally disposed recess adapted to receive the said bolt, said method involving'mounting upon said bolt a displaceable memberv which is adaptedto engage. when the bolt and insulating element are in assembled rela" tion, a plurality ot spaced points on said insulating element, introducing into said rerecess a iiuid cement, and inserting said bolt into said recess.

d. rllhe method ot connecting a bolt to a suspension insulating element provided with a centrally disposed cylindrical recess adapted to receive the said bolt, said method involving mounting upon said bolt at a point intermediate the ends thereof a. removable dislr, partially filling said recess with a fluid cementing substance, insert-ing said bolt into said recess until said disk is in engagement With said insulating element.

5. The method of connecting a bolt to a suspension insulating element which is turnished with al recess adapted to receive i. portion ot said bolt, said method involving introducing a tluid cement into said recess, inserting a portion ot said bolt within said recess, .positioning on said bolt means for temporarily maintaining the same centrally ot said recessl and parallel to the vertical axis ot the insulating element when assembled vvith said insulating element and subsequently removing said means.

6. rl`he method of connecting a bolt to an insulating element having an axially dis posed recess therein adapted to receive the headed end ot the said bolt, said method involving introducing fluid cement into said recess, positioning a disk on said bolt, insertingl the headed end of said bolt into said recess until the same is immersed in said cement, maintaining the bolt in assembled position by engaging the said disk with a portion ot' the insulating element and finally allowing the cement to harden o1' set.

ln testimony whereof l atlix my signature.

Images