US506034A - Insulating-joint - Google Patents

Description

(N; M51. v

- S. W. BURTGHAELL.

[INSULATING JOINT. No. 506,034

Patented Oct. 3, 1893.-

UNITED-l STATES s'AMUEL. W. BURTOIIAELL, OF

PATENT O FICE. n

SAN FRANcIsoo, CALIFORNIA.

lNSULATlNG -JO|NT.

, SPECIFICATION forming part of Letters Patent No. 506,084, dated October 3, 1893.

Application filed June 20, 1892.

-T0 all'whom it may concern:

Be it known that I, SAMUEL W. BURTCH- AELL, a citizen ofth'e United States, residing in the city and countyof San Francisco, State of California, have invented an Improvement in Insulating-Joints;.and I hereby declare the following to be a full, clear, andexact description of the same. My invention relates to the class of-insulating joints. especially adapted for connecting gas fixtures with the house pipes, and at l the same time insulating them to provide for the'attachment to said fixtures of electric lighting apparatus. Q

invention consists in-thenovel joint hereinafter fully described and specifically claimed. Y The object of my invention is toprovide a simple and effective insulating joint, the es-- sential advantage of which lies 'inits non-rotatability. I

Referring to the accompanying drawings for a. more complete explanationof ymy' in- =vention,.Figure 1 is a vertical sectionot my,

insulating jointi Fig. 2 is a perspectijze'yiew showing the several parts separated and about to be put together. i

The joint consists of four parts, to wit, the

section Aadapted to be secured to the projecting end of the house pipe; the section B to which the gas fixture is secured; the connecting nut O and suitable insulating material to be more fully described. The section A is a tubular piece of metal provided at its upper end with internal threads a and at its lower end with the enlarged externally t'hreadedportion a.

Section B consists of a tubular metallic piece having projectingqfrom its head a reduced internally threaded neck b.

The connecting nut O is an annular piecegof metal internally threaded at its upper end,

and having an inwardly projecting flange c at its lower end. The'section A is secured to the house pipe D by screwing its upper end thereon. The section B has the chandelier pipe E securedLto it by screwing into its internally threaded neck; 'lhe'sectio'ns A and a B are unitedby having the connecting nut nall-y threaded upper end screwing on to the fitting over section B,.its flange 0 being limited by the head of said section, and its interenlarged externally threaded lower end of Serial No. 437.384. (No model.)

.sulated from each other.

in any suitable manner. I have here shown an apertured disk F of leather orother suitapertured disk G of mica.v Awasher'Hof intending flange c on the lowerend of theconsulated from each other, and the connecting In practice it is a difificult matter with such tion from tnrning'onthe upper section. This is not perfect without some means of remetween the two sections may be of any suit+ able formof projection on one section, entermg acorresponding groove or socket .onlthe immaterial nponwhich section the projecsection B is formed or provided a correspondvingconcave or socket J, thedepressed portion or socket traversing the'central portion ing side wings orwallsxJ adapted to enter the spaces at the sides of the convex projecparts are fitted together,thereby causing'an providing-an eitective means for preventing sulatin g material is seated between the back; of the head of section B and the inwardly exdying thisdifficu1ty. Ihave accordingly providedfor such an engagement between the' adjacent ends of sections A and-B as will prevent section B from'turning on. section A -as'it would do if the adjacent ends were simple plain surfaced onesij This 'CQHDGOtiOll'bQ' tion may be, or on which the groove maybe. i I have hereshownl'as the 'bestfhrmthegup vper section A as having formed with ne vided on its lower end a convex projection 1,,

section A. These parts are to be suitably ini This may be done able material fitted against the lower end of section. A, a similar disk F fitted against the upper end of section B, and an intervening neoting not 0. Thus the two sections are innut which is incontact with the upper section' A is insulated from the lower section B.

a coupling or joint to prevent the lower secis a serious disadvantage requiring constant attention to set them up closely, and the j ointother section. v The form of these projections and grooves is immaterial, and it is likewise I and up'on'the upper end or'head of the lower Y of the piece so as to leave upwardly p'rojec'tmo tion of the piece or section A, when the two interlocking of said sections A and B, and

the turning of one section on the other. 'The insulating material conforms to'these shapes and when the securing nut is tightened up, the convex projection on the one part fits down into the concave socket on the other of it, and the other section having the central portion of its adjacent end depressed and bounded by projecting wings or walls adapted to enter the spaces provided atthe sides of the convex projection of the other section, to prevent the turning of one section on the other, a washer interposed and adapted to conform to the interlocking meeting surfaces of the opposing sections, and means insulated from one of said sections for connecting them, substantially as herein described.

In witness whereof I have hereunto set my hand.

SAMUEL W. BURTOHAELL. Vtitnesses:

J. W. KEYS, WALTER A. CLARK.

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