US1291139A - Insulator. - Google Patents

Description

R. R. REESE.

INSULATOR.

APPLICATION FILED AUG.8. 1.917.

Patented Jan. 14, 1919.

2 SHEETSSHEET1 R. R REESE.

INSULATOR.

APPLXCATION FILED AUG-8.1917.

1,29 1,1 39. Patented Jan. 14, 1919.

2 SHEETSSHE ET 2.

INVENTOR WITNESSES I ATTo R N EY UNITED STATES PATENT OFFICE.

RUDOLPH R. REESE, 0F STARTUP, WASHINGTON.

INSULATOR.

To all'whom it may concern:

Be it known that I, RUDOLPH R. REESE, a citizen of the United States, residing at Startup, in the county of Snohomish and State of Washington, have invented new and useful Improvements in Insulators, of which the following is a specification.

This invention relates to insulators for holding and supporting electrical conductors or wires securely in position without injury thereto.

An object of the invention is to provide means whereby the electrical conductor or wire may be readily secured to the insulator and clamped therein, novel clamping means being provided which will insure the holding of the wire against accidental displacement.

Another object is to provide means for securing the clamp in position, so as to securely grip the wire, the said clamp securing means having a binding action upon the clamp and within the insulator, in order to hold both elements in position.

With the above and other objects in view, the invention consists of the following novel combination and arrangement of parts hereinafter more fully described and'illustrated in the accompanying drawings, in which Figure 1 is a perspective view of an insulator constructed in accordance with the present invention.

Fig. 2 is 'a vertical longitudinal sectional view of the same.

Fig. 3 is an enlarged detail sectional view taken at right angles to Fig. 2 on the line 3-3 of Fig. 2.

Fig. 4.- is an enlarged detail perspective view of the clamping block. I

Fig. 5 is a fragmentary sectional view similar to Fig. 1, illustrating a modified form of the invention.

Fig. 6 is a sectional view illustrating a further modification.

Fig. 7 is a fragmentary transverse sectional view taken at right angles to Fig. 6.

Fig. 8 is a detail perspective view of the clamp shown in Figs. 6 and 7.

Fig. 9 is. a fragmentary sectional view of still a further modification. 1

Referrin to the form of the invention illustrated in Figs. 1 to 4 inclusive, the insulator consists of a body portion 10 formed of any suitable insulating material and is rovided with a threaded socket 11, by meaig of which it is positioned.

Specification of Letters Patent.

Patented an. 14, 1919.

The novel features of the invention reside in providing an insulator with a slot 12,

which is open at the top as shown, the said slotextending across the top of the body portion of the insulator and being provided with a substantially semi-circular wire receiving seat-13 in the bottom wall thereof. Locatedv in the bottom of the seat 13 are corrugations 14, which extend throughout the length of the slot and are adapted to engage similar corrugations 15 formed upon a clamping block 16, the length of which is co-extensive with the length of the slot 12. The block 16 is formed with corrugations 15 in a substantially semi-circular seat 17 which when the said block is positioned within the slot 12 is adapted to be seated against the wire 18 therein.

The clamping block 16 is further provided with laterally extending lugs 16', which are located upon opposite sides thereof intermediate its length and are adapted to engage grooves 12 formed in each of the side wallsobstruct the o ening for a purpose presently apparent. A apted to be inserted within the opening 19 is a resilient pin 20, which pin is formed with a sharpened end 21, so that when it is inserted in position within the opening 19 this end will engage over the block 16 and cause it .to be tightly clamped upon the wire 18, the taper of the pin 20 causing a clamping or wedging action of the pin within the opening andupon the block 16.

It will thus be seen that when the pin 20 is positioned within the opening-19 it will be securely held therein against accidental displacement and cause a downward pressure upon the block 16 to securely hold the wire clamped therein, the engagement of the corrugations 14 and 15 further, acting to prevent any longitudinal movement of the block. The pin 20 is provided with a head 21 soas to limit its inward-movement and if desired the opposite end may be bent downward against the surface of the insulator to further aid in holding the parts in position. I

In the modification shown in Fig. 5, the clamping block 16 is dispensed with, the pin 20 being positioned within the opening so as to cause it to engage the wire 18 to hold the same in position, due to the tapered shape of said in.

In the modification shown in Figs. 6 to 8 inclusive, the wire receiving slot 22 is formed in a manner similar to the slot 12, but in this form of the invention there is provideda resilient clamping element which is adapted to cooperate with the bottom wall of the slot 22 for holding the wire in position. This clamping element consists of a body member 28, which 'is slightly curved throughout its length and is provided upon its under face with corrugations 24 and a semi-circular wire receiving seat 25, after the manner of the slot 22, so that the Wire may be clamped between this face of the resilient element and the bottom wall of the slot 22. l Located at each end of the body portion 23 are outwardly-and downwardly inclined arms 26, which are bifurcated -to form a wire receivingslot 27, each of the arms being formed with inwardly extending portions 28 for engagement with lugs 29. In order to provide for the easy manipulation of this resilient clamping element, one of the arms 26- is provided with an external terminal portion 30 by means of which it may be easily removed from the insulator.

In the form of the invention shown in Fig.

9 the insulator is provided with a laterallyextending slot 31, which is adapted to receive wire, the inner end of this slot being formed with a wire seat 32 and for the purpose of holding the wire within this seat there is provided a pin 33, which is adapted to be received Within the vertically disposed opening 34, which communicated with-the An insulator comprising a body portion having a transversely disposed wire receiving slot in one end thereof and having opositely arranged vertically disposed grooves ocated centrally in each of the side wallsof the slot communicating therewith, said grooves extending throughout the height of the slot, an elongated clamping block snugly fitting within and extendingthroughout the length of the slot. and adapted to be positioned upon the upper surface of the wire within the slot, relatively narrow laterally extending lugs projecting from each of the side edges of the block and in the same plane ment with said grooves and a pin positioned within an opening extending transversely of the body portion across the slot and centrally above the clamping block to bind the latter in position.

In testimony whereof I aflix my signature.

RUDOLPH R. REESE.

-with the body portion thereof for engage-

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