US1193602A

US1193602A - Sylvania

Info

Publication number: US1193602A
Authority: US
Publication date: 1916-08-08
Anticipated expiration: 1933-08-08

Description

c. L. PIERCE, 1R. INSULATOR SUPPORTING FIXTURE. APPLICATION FILED APR. 6. I9I6.

m W w N VIEZZTZGSSGSI 1,193,602. I i Application filed April 6, 1916. Serial Ne..89,369.

-UNITED sra'rns PAT CHARLES L. PEIRCE, JR., OF PITTSBURGH, YENNSYLVANIA, ASSIGNOR OF ONE-HALF FFEQE.

TO HUBBARD 00., OF PITTSBURGH, PENNSYLVANIA, A. CORPORATION OF PENN- SYLVANIA.

INSULATOR-SUPPORTING FIXTURE.

To kill uiltom it mag concern:

Be 'it .known that I, CI{ARLES L. PEIRCE,

Jr., a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improveinents in Insulator-Supporting Fixtures, of which the followin is aspecification.

My invention re ates to supporting fixtures, particularly to fixtures comprising a sheet metal body part and sheet 'metal bracket members secured thereto.

Supporting fixtures have been made heretofore in which the'body part and bracket members are made of stock material as for example channel bars. "In my Patent No. 1,007,138, issued October 31, 1911, particularly Figures 9 and 10,'is shown a fixture in which the body .is a length :of channel barand -'t-he"bra'cket member is bent up from a' length of channel bar of greater width than the in 'order to saddle over the body. with its "sides overlapping the body sides, a strap --saddling over the bracket member and -a single rivet securing the strap, bracket member and body together,

. the strap having lateral ears provided with liced.

bolt holes forsecuring the fixture to a sup- "-.port. One disadvantage in the fixture of 'this'patent is that the stock material is of fixed dimensions and has the same crosssection throughout whereas the strains to wlnch'the members are sub1eeted in service are. digerent at various sections. This means that n order to get the necessary strength at one section to meet-a certain 'strain there will be over-weight at some other section where-the strain is not so great and consequently there will be'waste. Another disadvantage is thatthe bracket members will not fit intimately to the body or the reason that the outer corners of the channel bars are right angular and quite sharp whereas the inner corners are obtuse angular and rounded, the result being that when the bracket members saddle over the body part the overlapping sides will not engage snugly, this being clearly shown in 10, and consequently considera le strengthening inter-eugagernent is sacri- Another lisa lrautage is that. the strap. in order to lit'suuglr again t the to and sides ol the brzu'zhet member must be bent sharply. and if after making llw sharp bonds the Initial is not prop rly zuuurihil Specification of Letters Patent.

the strap will be. weak at the bend and frequently breaka'ges have occurred for this reason. i

The object of my invention is" to produce a fixture in whi'eh'all the above'disadvanfee ta'ges are overcome and eliminated and in the body part and bracket members integral from sheet metal 'to, arched cross-section with well rounded corners, the curvature being such that" the-bracket member will intimately saddle -o."erandzengage with the body part and the strap will intimately saddle over andengage' with the top and sides of the bracket member, -.the bends of' the strap between its body and ears being well rounded and preferably-provided with lateral strengtheningcorrugations.

Onthe accompanying drawing I have shown an insulator supporting fixture which embodies theconstrnetion and .-featiires of my invention. I

On this drawing Fig. 1 is aside elevational view, Fig. 2 is a front view with the end of the lower bracketmember broken away, Fig. 3 is a sectional view on plane 33, Fig.2, Fig. 4 is a sectional view on plane M, Fig. 2,-and Fig. 5 is asectional view similar to Fig. 4 showing a modified arrangement. 3

In the fixture shown the body part lOeis bent up from a single piece of fiat sheet metal to arched or U-shapedcross-section, the front being practically semi-cylindrical. ;\t the top and bottom the body has the flattened sections '11v and 12 provided with the. belt or screw holes 13 and l I'CSPCCI metal wilhits bark amlhend pails l? and,

l3 ul :u'rln w. U shaped ('r s -seriiou and with the limbs lil'flllgI-li. lug'xtllil' at the will 19 (0 f rm a seat lur an insulator support in slrurturr i shown in {his as-e in (he. forurul wir helix n: g :xl ils' ends in the upper and

lower slots

21 and 22 respectively. The backs 17 of the bracket members saddle over and intimately lit the front and sides of the body part 10 clearly shown in Figs. 3 and 4, and such engagement locks the bracket members to the body part against rotational displacen'ient, the bracket members being further secured to the body part by the rivets 23.

To provide greater and more secure seating for the fixture a strap 24 is applied over the back of each bracket member. These straps are also pressed up from sheet metal and each has the central body portion of l arch or U-shaped cross-section for intimately saddling over and engaging with the front and sides of the bracket member back,

'

Wings

25 and 26 extending laterally from the body of the strap providing the seating area for the fixture and having the

bolt holes

27 and 28 by means of which the straps may be secured to a support. Each strap is preferably secured in place by the same rivet 23 which holds the bracket member to the body part. In other words, a single rivet passes through the strap, bracket member and body part as clearly shown in Figs. 3 and 4.

:The

bends

29 and 30 between the wings and body of the strap are rounded and to add

strength corrugations

31 and 32 may be formed in the bends longitudinally of the strap.

VViththe above construction and arrangement the bracket members intimately saddle over and engage with the-front and sides of the body part 10 and the straps inti mately saddle over and engage with the front and sides of the bracket members and such intimate engagement adds great' strength to the structure and such engagement together with the rivets. 23 will resist any displacement, either rotational -or longitudinal, of the parts. The bends in the strap being of considerable radius, the strap will retain full strength and when the straps are provided with the strengthening corrugations the fixture will be rigidly secured to its support particularly against swing or displacement under lateral strains under pull of wires at the insulator ends of the bracket members.

Tn Fig. 5 I have shown my invention applied to an individual bracket to be secured construction and arrangements shown and described as changes and modifications are no doubt possible which would still come within the scope of the invention.

1 claim the following:

1. A fixture comprising an insulator receiving member and a strap for securing said member to a support, said member being pressed from flat sheet metal and being of arch shaped cross section open to the rear, said strap being arched to saddle over and intimately engage at all points with the front and sides of said member, means securing the strap to the member, and laterally extending wings on said strap providedwith belt holes.

2. A fixture comprising an insulator receiving member and a strap for securing said member to a support, said member being pressed from fiat sheet metal and being of arch shaped cross section open to the rear, said strap being arched to saddle over and intimately engage at all points with the front and sides of said member, means securing the strap to the member, laterally extending wings on said strap provided with belt holes, and transversely extending strengthening corrugations for the bends between the arch and wings of said strap.

3. An insulator supporting fixture comprising a body part anda bracket member, said body part being pressed up from sheet metal to arched cross-section. and open at the rear, said bracket member being pressed up from sheet metal to arched transverse cross-section, the end of said'bracket member saddling over and intimately engaging with the front and sides of the body part to be locked against rotational displacement, and means securing the bracket member to the body' partagainst longitudinal displace ment.

4. An insulator supporting fixture comprising a body part and a bracket member, said body part being pressed up from flat sheet metal to arched transverse cross-section and open to the rear, said bracket member being pressed up from flat sheet metal to arched transverse cross-section, the end of said bracket member saddling over and intimately engaging at all points with the.

front and sides of'said arched body part, a ,strap pressed up from sheet metal and arched at its center to saddle over and intimately engage With the front and sides of the bracket member, means securing the strap, bracket member and body part intimately together, and lateral Wings on said strap provided with bolt holes;

5. An insulator supporting fixture comprising a body part and a bracket member, said body part being pressed up from flat sheet metal to arched transverse cross-section and open to the rear, said bracket memher being pressed up {mm flatsheet mom to arched tmnsveyse (wuss #ev'imu the end )1 said bracket member snd'iihkg user and intimately engaging at ah puints with the front and sides 01'' said arched body part, :1, strap pressed up from sheet metal and arched at its center to saddle over and intv mately engage with the front and sides of the bracket member, means securing the 10 strap, bracket memher and body part inti mutely together, and lateral Wings 011 said strap provided With halt holes, said strap having strengthening corrugations at its hemle between Its arched section and the wings.

In witness whereof I hereunto subscribe my name this 26th day of February, A. D., 1916.

CHARLES L. PEIRCE, JR.