US1179127A - Insulator. - Google Patents

Description

H. R. MARKEL.

INSULATOR.

Patented Apr. 11, 1916.

/3 f'llg. 4. l

Y A, mn

APPLICATION FILED JAN-9, |914.

UNITED STATES PATENT oEEioE.

HARLEY R. MARKEL, 0F COLUMBUS, OHIO.

i INsULATon.

Application filed January 9, 1914.

To all whom t may concern.'

Be it known that I, HARLEY R. MARKEL, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Insulators, of which the following is a specification.

My invention relates to insulators and pertains particularly to the provision of means for binding the various sections comprising the ordinary type of insulator together, with a 'limited amount of play between their coperatin g surfaces.

My invention is particularly applicable to that type of insulator known as knobs and is applicable in general to all insulatorsformed in sections and having alining bores passing therethrough used for the passage of the attaching nails or screws broadly stated.

In its broadest aspect, my invention comprises, in combination with the various sections forming the insulator, which sections are provided with alining bores for the purpose above stated, means for insertion through these alining bores in noninterfering position with the attaching nails, whereby the various sections are automatically locked together with a limited play between the sections. This is its preferred form, but it is obvious that the structure may be slightly modified, if desired, so that the locking feature is not automatic at all times.

The means I have provided for binding the various sections together, preferably takes the form of a clip somewhat resilient in its nature and cooperating with these various sections to produce the desired locking result. l

A further object of my invention reside in providing the locking means with a suitable head to entirely dispense with the use of leather washers in applying the insulators to their working position, if it is desired. This I accomplish by the provision of a centrally apertured head, the aperture being to accommodate the passage of a nail or screw, while the burs formed around the perimeter of this aperture, are turned up to lie on the upper surface upon which the head of the attaching device is adapted to rest. The bore through the insulator is made slightly larger than the attaching device and the cushioning action which results from the above-named structure when the attach ing device is driven home, does away with Specification of Letters Patent.

Patented Apr. 11, 1916.

serial No. 811,123.

the use of these leather washers. This feature will be more clearly presented further on in the specification.

The preferred embodiment of my invention is shown, in the accompanying drawings, in which similar characters of reference designate corresponding parts, and in which:

Figure l is a vertical section of an insulator showing my invention applied thereto, the two sections forming such insulatorl being in abutting relation, Fig. 2 is a similar section but showing the two sections slightly spaced apart, Fig. 3 is a vertical section of a portion of the cap of an insulator, showing the structure I have pro *ided for dispensing with the` use of washers before the attaching means is finally driven home, Fig. l is a similar view showing the attaching structure in its innermost position, Figs. 5,v 6 and 7 are plan, side and edge views of one form of locking means used by me for binding the sections together, and Fig. 8 is a view in perspective of another form of attaching means embodying the same broad idea as that shown in Figs. 5, 6 and 7.

It will be understood that my invention is applicable to all types of insulators wherein there are provided a plurality of sections having alining longitudinal bores adapted to receive the attaching nails or screws. I do not confine myself to any particular knownk structure and in the drawings, the insulator shown comprises a base section l and cap section 9 each having bores 3, which bores are in vertical alinement, as shown. The top face of the cap section is preferably provided with a tapered-socket such as` shown at 4c, while the base section is preferably provided with a countersunk portion shown at 5, which countersunk portion is also provided with a projecting shoulder G, whereby the annular groove 7 is formed. It will be understood that the two sections are assembled in the relation shown, whereupon my locking means, to be presently described, is inserted through these alining bores 3.

The locking means shown in Figs. 5, 6 and 7 comprise a circular head portion 8 centrally apertured as at 9, the perimeter of this aperture being burred and these burs bent outwardly to lie upon the upper surface of the head 8, as is shown at 10. Attached to this head portion in any desired manner, in the present instance shown integral, is a depending shank portion 1l of suitable bendable material possessing a degree of resiliency. The lower end of the shank 11 is bent outwardly and over to assume the position shown at 12, the arm so formed being adapted to coperate with the shoulder 6, formed in the countersunk portion of the base member 1. It will be noted that the distance from the end of the arm 12 to the shank 11 is somewhat greater in width than the diameter of the bores 3, whereupon, after the clip as a whole has been inserted its full length through the alining bores 3, the arm 1Q- beingl slightly moved inwardly to permit this insertion, will again spring outwardly after it enters the countersunk portion 5 to automatically lock the two sections together no matter what their relative positions may be. in this manner, the two sections are locked together in a manner to absolutely prevent their relative separation further than is permitted by the increased length of the shank of the clip over the combined lengths oi the two bores 3. The separating movement of the two sections further than this will cause the arm 12 to engage the shoulder 6 and under ordinary conditions, further movement apart of these sections, will be prevented. lt will, therefore be apparent that by the simple insertion of the clip as constructed, the various complemen tal sections will be held in their assembled relation, it being understood that this is desirable because breakage will be reduced to a minimum during shipment and further because a complete insulator will always be at hand and, therefore, avoid gathering the independent pieces before using. Further, it is desirable to manufacture these insulators in some instances other than in interchangeable sections and when this is done, the variously constructed sections forming one insulator may always he found in one unit.

ln Figs. 3 and i. l have shown a portion oi the clip as passing through a portion of the. cap sections and further, I have shown an attaching nail 13 in its correct relative position. It will be noted that the attaching nail 13 is somewhat less in diameter than` the diameter of the bore 3 and that its head 14 rests upon the bur portion 10 ot the head 8 of the clip. The tapered socket i of the cap section permits only the outer portion of the head 8 of the clip to rest in engagement and a blow on the head 14 of the attaching nail after the assumption ot' the position shown in Fig. 3, will cause distorting of the head 8 of the clip, as is clearly illustrated in Fig. d. This distortion results in a marked cushioning action and prevents shattering of the insulator itself, without the use of leather washers or the like, as has been common.

In F Si, I have shown another type oi attaching clip comprising a head 15 centrally apertured as at 16 and also provided with the lours as has been previously related. Depending from the underside of the head 15 are two wires or shank portions 17 attached to the head in any desired manner and whose ends are bent over to form arms, as shown at 1S. The principle and general operation of this last named clip, is the same -as that of the clip shown in Figs. 5, 6 and 7 and a detailed discussion is not believed to be necessary.

What I claim, is:

An insulator comprising hase and cap sections having alining longitudinal bores adapted to receive an attaching nail, and a clip adapted to pass through said bores in non-interfering position with respect to the attaching nail to bind said sections together with a limited play between them, said clip comprising an apertured head and a shank forming locking means, said head being a fiat disk and having the metal from the apertured portion turned over to lie on its upper surface and around the perimeter of said aperture.

In testimony whereof I affix my signature in presence of two witnesses.

HARLEY R. MARKEL.

Vitnesses C. C. SHEPHERD, WALTER E. L. Boon.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images