US1936296A - Terminal mounting means for electrical conductors - Google Patents

Description

NOV. 21, 1933. B, NKs 1,936,296

TERMINAL MOUNTING MEANS FOR ELECTRICAL CONDUCTORS Filed June 26, 1931 Patented Nov. 21, 1933 1,936,296

UNITED STATES PATENT OFFICE TERMINAL MOUNTING MEANS FOR ELEC- TRICAL CONDUCTORS Edwin B. Fairbanks, Goldwater, N. Y., assignor to General Railway Signal Company, Rochester, N. Y.

Application June 26, 1931. Serial No. 546,963 2 Claims. (Cl. 173-324) This invention relates to a wire terminal An insulated stranded wire 3 is terminated by mounting means for relay binding posts and an eyelet 4, as previously described, and. is semore particularly to a means for grouping the cured to an insulating holding member I by a external connection terminals for a relay so as second eyelet 5. The holding member I is made 5'to permit their manipulation in unison. of suitable insulating material, such as fibre, 60 Relays, used in railway signalling systems and which is adapted to be shaped to meet the parparticularly in centralized traflic control systems, ticular requirements. The eyelet 5 has a cylinare a part of a rather complicated circuit ardrical portion which is adapted to pass through rangement, thereby making their removal for a hole in the holding member I and bush the testing, repair or renewal a difficult task, inaswire eyelet 4 so that its extreme flared end rests 65 much as it is'absolutely necessary to return each against the lower side of the holding member I. external connection to its proper relay binding The other extreme end of the cylindrical portion post. of the eyelet 5 is flared and crimped over the top In view of this fact, it is proposed in accordance 0f e eyelet 4 to Securely hold both eyelets on the with this invention to provide a means for asholding member I. 70

sembling the external wire connections in unit e inside d am O th eyelet 5 i5 Suitably groups for conveniently removing these connecselected SO that, when assembled, the unit fits tions from the relay binding posts without deeasily on t y of s p t u a d n p s ranging th ir relative positions where it is securely held and locked between Other objects, purposes and characteristic feaw s e s 6 by t The Clamping force 7 tures of the invention will appear as the descripexerted in this way more securely engages the tion thereof progresses, during which references eyelet 5 with the wire eyelet 4 thus insuring a will be made to the accompanying drawing, which low resistance connection between the two eyeshows the invention in a manner to make it easily lets and between the eyelets and the binding p understood, rather than with the view of show- The terminal mounting arrangement shown in ing the particular construction preferably em- Fig. 3 is made up ready to be connected to the ployed in practice, and in which: relay contact binding posts 1. The holes in the Fig. 1 shows a side view of the invention apfibre holding member I are properly located so plied to a relay (indicated by dot and dash lines). ha he mpl m m r n be easily placed 30 Fig. 2 shows a front view of a form included over all the contact binding posts 1. Suitable in th in nti references, such as the letters A, C, etc., as Fig. 3 shows a perspective view of a form of the shown, may be placed on the holding members invention. near these holes to correspond to the references Fig. 4 shows a detail sectional view of one form on the relay thus making it convenient to properly 35 of terminal mounting. locate the external connections to insure that The application of the invention illustrated in correct connections are made when the unit is the drawing comprises a method of terminating installed on the relay. The external wire connecthe external wire connections of certain relay tions 3 are usually grouped into a cable, as illusbinding posts which are so associated that their trated, and bound by ties or tape, which is self- 40 external connections can be grouped and handled supporting and prevents any turning of the wire in unison. The relay, illustrated by dotted and eyelets 4 on the fibre member I dashed lines in Fig. 1, has its contact binding Another arrangement of terminal mounting posts 1 symmetrically grouped in two rows with is shown in Fig. 2, which shows the external conthe back row raised above the level of the first nections for the operating coils of the relay shown 45 row and the binding posts 2 of the operating coils in Fig. l secured to a fibre member I in the manare placed above the contact binding posts, as ner previously described and as illustrated in shown, and in horizontally spaced relationship. Fig. 4. References, such as and as The external connections of such relays are shown, may also be placed on the fibre member usually made of insulated stranded wire and ter- I near the terminal eyelets to designate the par- 5 minated by a round copper eyelet which is ticular binding posts 2 upon which the conneccrimped and soldered to the strands. Before tions are placed when the unit is assembled on connecting these eyelet terminals to their rethe relay. The lower downwardly extending porspective terminal binding posts, they are secured tion of the fibre member I is included to carry to an insulating holding member in the manner the number assigned to the particular relay upon 55 illustrated in Fig. 4. which it is placed, such as 521 HP, as shown.

It is probable that, in many relay installations, a connection will not be made to every binding post, but this will not necessitate that a. different form of holding member I be constructed, as one standard form containing the complete number of holes can be employed and eyelets omitted where connections are not to be made. It may also be advantageous to construct the holding member I of material which is slightly flexible in order to tighten on binding posts which may differ slightly in height.

A different form of mounting the wire terminals on the holding member I may also be used, such as a single one-piece eyelet consisting of a cylinder having a central annular outwardly projecting shoulder which permits crimping one end of the cylinder around the wire connection to clamp it between this end and the shoulder, and crimping the other end around the hole of, and against, the fibre holding member I.

From the accompanying drawing and the foregoing description, it can be seen that a means for mounting wire terminals on an insulating member has been provided which enables these wire terminals to be handled as a unit and installed or removed on an associated group of binding posts without disturbing their relative positions. These units are also so arranged that only one way of applying them is possible and in the case of a unit having all the terminals in one plane the possibility of its being connected in a reversed position is obviated by the reference letters on the insulating holding member.

The above description of the forms of the present invention is given solely by the way of example, and is not intended, in any manner, in a limiting sense. It is also to be understood that various modifications, adaptations and alterations may be applied to meet the requirements of practice, without in any manner departing from the spirit or scope of the present invention, except as limited by the appended claims.

Having thus described my invention, what I claim is:

1. Means for co-ordinating the current conduct ng Wires leading to a relay having two associated rows of binding posts located on different planes comprising, a slightly flexible insulating sheet bent in step-like fashion to be disposed in two substantially parallel planes and provided with two rows of holes one row in each plane of said sheet, a metal eyelet in each of said holes, and a wire connected to each of said eyelets.

2. Means for co-ordinating the current conducting wires leading to a relay having two associated rows of binding posts located on different planes comprising, a slightly flexible insulating sheet bent instep-like fashion to be disposed in two substantially parallel planes and provided with two substantially parallel rows of holes one row in each plane of said sheet, a metal eyelet in each ofsaid holes, and a wire connected to each of said eyelets.

.' EDWIN B. FAIRBANKS.

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