US522370A - Distributing-board for electric circuits - Google Patents

Description

.(No Mode'al.) Y y R. HERMAN,

l DISTRIBUTING BOAID I'CR ELECTRIC CIRCUITS.

Patented July 3 UNITED STATES ln'iniv1-l OFFICE.

REI'NHOLD HERMAN, or CRAFTONPIJNNSYLVANIA.

Dis-TR|BuT,|No'soARDFoR ELEcjrmocmeulfi-S.

SPEIFICATIN forming part of Letters Patent No. 522,370, dated July 3,1894 4 Application filed December 14,1893'1 v Serial No. 493.677. '(No model.)

To all whom it may concern.-

13e it known that I, RELNHOLD HERMAN, a citizen of the United States,residing'at Crafton, in the countyof Allegheny and State of- Pennsy1vania,h'ave .invented or discovered certain new and useful Improvements 'in Distributing-Boards lfor Electric Circuits, of which improvements the following is a specification. v The'invention described herein relates to .certain improvements in distributing boards forelectric circuits, an'd has for its object a construction wherein the main and distributing wires .may bereadily attached to their terminals and the distributing circuitsin any desired number connectedto the terminals of the main circuits by Vfuse stripsi' In general terms,the invention consists in the construction 4and, combination, substantially 'as hereinafter more fully described and particularly claimed.

In the accompanying drawings forming a 'part of this specification, Figure 1 is a top plan view of my improved distributing board, and Fig. 2 is a'section of the same, the plane of section being indicated by the line w, Fig. 1.-

In the practice of my invention, the base or 'support 1 of the terminals is formed of slate,4

marble or any other suitable nonconducting material.

"The terminals A 'for the main' circuit con-k sist of a metal socket 2 preferably formed of brass, having a flange or shoulder 3 at oneend and a threaded stem 4 at its opposite end, as shown in Fig. 2. These 'sockets having the ends of the main wires. secured therein preferably by solder, are placed in suitable openings in the b ase `or support 1., the flanges or` shoulders 3 entering countersinks around the openings in thebase, thereby preventing the sockets passing through the openings.

When several circuits are' to vbe connected to 'the main circuit,'curved metal plates provided with perforated lips 6 are placed on the threaded stems 4 will pass through the holesV upper side'of the base or support, lso that the in the lips.v The plates 5 are heldin position onI the base' by nuts 7 screwingv onto the threaded stems,'as shown in Fig. 2. The plates 5. are provided with aseries of threaded holes foithe reception of the screws-8 correspondins to the number of circuits to bereken off.

The terminals O for the distributing wires may be constructed in the same manner as the terminals A, or may be made with solid body portions 9, having lflanges or shoulders at one en'd, the opposite ends being threaded. When using this form of terminal the ends of the wires 13 for the distributing circuits are passed through holes formed through the base or support adjacent to the terminals 9, so that they will engage notches formed in the edges of theholding nuts 10, as shown in`l1`ig.2'.4 The wires thus engaging the' nuts l0 not only'serve to lock the nuts, but are also held by said notches, while the ends 'arebeing bent around the'threadedr stems immediately above the nuts. The nuts ll'are lthen screwed down upon the bent endsof the wires, thereby clamping such ends tightly in position and forming good electrical contact therewith.

The distributing terminals are connected with the ,plates 5 by means of the fusible wires'lli,

whose ends are bent around the screws 8, below their heads and around the 'terminals '9 just above the nuts 11, and are firmly clamped on the bolts 'by the cap nuts 12, which also serve to lock the nuts 11 on the terminals. When it is desired to continue the main cir- Icuit toanother distributing board,.terminals .15, consisting of sockets 2 having the shoulders and threaded stems 4, nuts 7 and cap nuts 15, are arranged on the base or support asindicated by dotted lines in'Fig. 1. 'The-terminais A and B are connected by fusible wires, which are wound` around the threaded stems above the nuts 7;' and ae held-imposition by the cap nuts 15. The ends of the wires forining the continuation of the main 'circuit are soldered in the sockets of the terminals B, as hereinbefredescribed.

I claimherein as my ,invention- 1. In a distributing board for, electric cuits the combination of an insulating base or 'sipportteminals provided with sockets for the reception .of the ends of the m`ain ,cir-V circuits, and with a-threaded'stem, metal provided with openings for the'threaded .stems and clamped to the base :or support by-nuts screwing onto thethreaded stems,a series of distributing terminals passingl through the base'orsu'pport, nuts screwing onto said terminai's andgprovided with notches for the re` `caption' of the-distributing wires, nuts for IOO clamping seid Wires onto the terminale, fusible wires extending from the plates to the terminnie nndmnts for clamping such fusible Wires on the terminals, substantially as set forth. v

.2. A terminal for a, distributing board having in combination a socket portion provided with e ehonlder or flange, e threaded stem, e holding mit and a lock nut fitting on ihe ihreadedniern; eubsiientialiy es ee'tffortli.

3.' The combination of a board or support, e terminal having e, body portion'provided et oneI end with a. shoulder or flange and with a threaded portion at its opposite end, a, notched mit for securing the terminal in position on the board, a 'clamping nut and a second clamp.

one end with a ange or shoulder and thi'ezlded .at its opposie end7 in eombinniion with n nui;

notched for the reception of a Wire io ne eleorioelly conneoed to the ierrniluie whereby ,the nur maybe looked on the bodyporion of the terminal, substantially as sei; forth.

In testimony whereof i have hereuniio Selm y hand.

REHHIOLD HERMAN. Witnesses: l

DARWIN S. WoLoor'r, F. E. GMTHER.

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