US2946979A - Binding post unit - Google Patents

Description

July 26, 1960 H. N. ISAXTON BINDING POST UNIT Filed March 28, 1957 INVENTOR. How/1130 N. SAxroN.

, 2,945,919 BINDINGPOST UNIT Filed Mar. 28, 1957, Se!- Not 649,tl90 1 Claim. Cl. 339-453 invention relates to a binding post unit adapted for'use with and upon electrical apparatus and instruments for securing wire leads and the'lilce tocircuit terminals. v v

In modern day testing and manufacturing of electrical equipment, it is exceedingly imperative to have troublefree, quick "acting and diminutive binding posts in the various applications for these units. Most of the present day binding post units are of a rather complex manufacture, necessitating high initial costs and further, due to their inherent geometry, have considerable waste space attendant their construction. These factors all aid in makingpresent day units rather expensive in initial cost and replacement cost and at times due to their inherent geometry, have considerable waste space attend ant their construction. These factors all aid in making present day units rather expensive in initial cost and replacement cost and at times due to their inherent complexity cause malfunctions which often necessitate replacement of the unit. This, of'course, requires additional time, further outlay of money for additional units, and, in general economic loss attendant thereto.

The present invention seeks to overcome many of these difiiculties by providing a greatly improved binding post unit, which, because of its simplicity, establishes reliability. Further, the inventive binding post unit is one which utilizes the maximum space. allocations in the most beneficial manner to achieve the greatest utility in attaining its prime purpose, namely that of holding or binding leads or the like securely.

The instant invention includes a plunger member which has a cylindrical rod element. On at least one end of the rod element is mounted a cylindrical disk element. The outer curved surfaces of these two elements are positioned in substantially longitudinal alignment so that a portion of the longitudinal outer surface of each of the elements lies in a common plane. The result is to have the disk element eccentrically mounted on the rod element with the outer surfaces thereof having a portion in planar longitudinal alignment.

A cylindrical housing is provided to journal therein the disk element, and to permit protrusion through one end oi the housing of the rod element in journaling relation with the housing. Intermediate the opposite end of the housing and the disk element is positioned 'a resilient means capable of holding the disk element against the one end of the housing through which the rod is journaled. The housing has, additionally, a generally transversely positioned receiving slot formed therethrou'gh, which, together with the disk element may cooperate to fonn a receiving opening for a wire lead, or the like,

when the disk element is urged against the resilient mem ber. Release of the disk element will cause, under the influence of the resilient member, the lead tobe firmly bound to the housing by the disk element.

In addition to the aforementioned objects and advantages, it is an object of this invention to provide a simple and trouble-free binding post unit.

It is another object of this invention to provide a bind- United States patfifif Patented July 26, 1960':

I binding post unit which is highly adaptable for utiliza-.

tion in present day miniaturization practices. V Objectsand advantages other than those set forth above will be apparent when read in connection with the accompanying drawings and specification, in which:

Figure l is a view in perspective of a binding post unit embodying the invention;

Figure 2 is a view in perspective of the plunger mem ber ofFigure 1; Figure 3 is a reduced exploded view of the invention as shown in Figure 1. Shown in Figure 1 is a generally cylindrical housing 10 which has journaledtherein a. plunger memberll" shown in detail in Figure 2. Plunger member 1 1 and housing 10 have interposed therebetween a resilient means 12. It should be realized that the resilient means 12 shown in the instant embodiment is exemplary and while any known means such as rubber, plastic, metallic, liquid, gaseous or the like, resilient means may be utilized, the embodiment shows a metallic spring as an example.

The housing 10 may, if desired, be part of a substantially unitary body member 14 which includes housing 10 and a shank portion 15. Shank portion 15 may include adjacent the housing member, a knurled section 16, and adjacent its terminus, a reduced diameter section 17. Knurled section 16 may be utilized to fasten the unit to another structure, and, the reduced diameter section 17 may be used to permit the attachment of leads, clips or the like for electrical connection of the same with the unit.

The housing 10 may preferably have formed therethrough in a generally transverse position a receiving slot 20. Into this receiving slot 29 will be placed the desired leads to be bound to the unit. The housing 10, which may be made by evacuating a portion of its interior may be closed at the end through which it is evacuated or drilled by a cap portion 21.

Plunger member 11 includes preferably a cylindrical rod element 22, and on at least one end thereof a cylindrical disk element 23. While in the instant embodiment the rod element 22 and disk element 23 have been shown as cylindrical, this showing is exemplary only and clearly does not exclude from the invention any other desired shapes such as rectangular, triangular and the like. There may be placed on the opposite extremity of rod element 22 another disk element 24 to aid a user in manual depression of plunger member 11 against the resilient means 12. To effectuate the objects of this invention, plunger member 11 has its disk elements 23, 2'4 eccentrically mounted on the rod element. The rod element 22 which has an outer curved surface 26, and

j the disk elements 23, 24 which have outer curved surfaces 27, 28, are so positioned upon the rod element 22 as to align the outer surfaces 27, 28 with the surface 26 in planar longitudinal alignment. This, in effect, the area within the housing member which must be utilized by the plunger member for its operation and permits the maximum use of the remaining displacement the housing member to be utilized by the receiving slot 20 for introduction thereinto of the desired wire lead or the like.

In operation, the plunger member 1 1 may, by urging on disk element 24 be depressed against resilient means 12 thereby moving disk element 23 below the slot 20.

This permits introduction of a wire lead into slot 20. Release of plunger member 11 will effect binding of'the Wirmleadito the slot- 20- by, disk element 23, thereby effecting both a mechanical and an electrical binding of the lead to the binding post unit.

A particular embodiment; of the invention illustrated and. described herein. iSi illustrated. only and. the invert-5 tion, includes. such: other modifications and= equivalents as may.- readilyappear. to. those skilledv in! thelart Within the scopesof.therappendeduclaim.

Lclaim:

The combination comprising; a tubular. housing having a transverselypositioned wire receiving; slot throughthe wall thereof; aecappositionedion theeendrof said housing, 1 said cap having an ieccentrically positioned. hole therethrough; means a form forcing, a wire-to. the end oi. said. slot, said means-comprising azunitary disk-andplunger assembly positioned insa-id housing, said; disk: having va peripheny slightly, smaller than the inner. erighery of said housing and being coaxial therewith+-wherer by. it may slide. freely. therein; and resilientmeans positioned in said housing for urgingtsaidadiskntowardi saidtcap and= forcingthe wire. to the=end 0f'said=s1ot; and. means.v for. preventing rotation of said disk-Vanda plunger assembly, said! means comprising said plunger" projecting through said eccentric hole in said cap and being eccentrically positioned with respectto said, diskand-h0using and being positioned so that one surface thereof is in slidable contact with the inner surface of said housing-whereby movement of said disk-andplunger assembly against the force of said resilient means away from said-slot permits the Wire to be inserted into said slot, andmovement of said disk-andplunger assembly diietosaid resilientmeans holds the wirerabtheendofrsaid SlOtm References Cited in the file of this patent- UNITED- STATES PATENTS 137,810 Wishart Apr. 15, 1873 821,029 Dow May 22, 1906 1,437,103 Hengstenberg Nov. 28, 1922 1,438,264 Rygh Dec. 12, 1922 1,574g744' Aiken: Mar; 2, 1926 1','594,456- Conway" Aug. 3, 1926 1,660,807 Norgren" Feb. 28, 1928' 2,701,871 Ranch Feb. 8.4955

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