US1405238A - Nut - Google Patents

Description

R. E. H. LOVELACE.

NUT;

APPLICATION FILED IAN.26,1917.

Patentd Jan. 31, 1922.

F IIIITII 40 pressed over and round the flange D. The

* UNITED STATES PATENT OFFICE. I

NUT.

Specification of Letters Patent.

Patented Jan. 31, 1922.

Application filed January 26, 1917. Serial No. 144,683.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARGH 3, 1921, 41 STAT. L, 1313.)

HARTE LovnLAoE, a subject of the King of' Great Britain, residing at Enfield, Middlesex, England, have invented new and museful Improvements in Nuts, of which the following is a specification.

This invention relates to an lmprovement in nuts, or terminals used on bells, dry

cells, and other various electrical apparatus, for the purpose of clamping down wire connections tightly. These nuts are employed for mechanical purposes also.

According to the present invention these nuts, or terminals are made out of sheet metal stamped up to form the exterior shape of a solidnut, or terminal, in the special way or ways as hereindescribed.

This reduces the weight of raw material used and increases the speed of production. The cost of manufacture is thus greatly reduced.

The invention is illustrated in the accompanying drawings in which Fig. 1 is a vertical section of the under cup forming a part of the nut. Fig. 2 is a plan view of the under cup. Fig. 3 is a vertical section of the upper cup forming the other part of the nut. Fig. 4 is a plan view of the upper cup. Fig. 5 shows the upper and lower cups assembled together, one half in vertical section and the other in side view. Fig. 6 is a plan view of the two cups assembled together. Fig. 7 shows an alternative design of the cups, vertical side view.

Fig. 8 shows this alternative construction in plan view. Fig. 9 shows alternative constructions.

The cup A is placed opposite the cup B and pressed on to it, the lip C being two cups being pressed together, are then in the form as shown by Fig. 5. The holes E and F are stamped in the cups A and B and are tapped with the desired thread. Hole F may be omitted if desired.

The number of threads may be varied as desired, by varying the thickness of the sheet metal. For practical purposes one and a half threads in each hole is usually found sufiicient for strength.

Fig.7 indicates a similar nut, or terminal: but this alternative form has indentations G. H. I. J. which may be pressed into the lip C and flange D at the time of pressing the two cups together. This arrangement would serve to prevent any possible movement of the upper and lower cups after the operation of pressing together.

The serrations K are pressed into the cup B at the time of pressing the two cups together, or the serrating may be done afterwards, in a separate operation.

In alternative constructions the terminal may consist of a disc C and two cups A and B pressed together as shown by Fig. 9.

Or the outer form of the nut itself may be varied as desired; hexagonal, square or the like. These shapes being produced by the shape of the press 'tool used.

In all the forms the nut has two cupshaped portions, whether these portions are first made separately and then pressed together or are made integral, and the transverse walls of these portions forming the top and bottom of the nut are remote from one another; that is, are spaced apart by the maximum length of the nut. Although each of these walls may only be thin and have but a few threads each, yet by being well spaced apart they ofi'er a long bearing on the threaded bolt or rod on which the nut is screwed.

I claim A nut or terminal for use on bells, dry cells, and other various electrical apparatus, for the purpose of clamping down wire connections tightly, of the character referred to. comprising two cups pressed together and each provided with a .hole tapped with the desired thread said holes being in alignment and spaced apart.

In witness whereof I have hereunto set my hand in the presence of, two witnesses.

ROSEMAN EDWARD HARTE LOVELACE. Witnesses RIPLEY' WILSON, GEO. VAN DYNE.

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