US1200749A - Circuit-closer. - Google Patents

Description

S. MYERS.

CIRCUIT CLOSER.

APPLICATION FILED 0m. 1. 1915.

amut:

SMYERS Patented Oct. 10,1916.

SAMUEL MYERS, OF TOWER, MICHIGAN.

CIRCUIT-61408153.

ame.

To all whom it may concern Be it known that I, SAMUEL MYERS, a citizen of the United States, residing at Tower, in the county of Cheboygan and State of Michigan, have invented certain new and useful Improvements in Circuit-Closers, of

.which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in circuit closers and it is an object of my invention to provide a device of this general character especially designed and adapted for use in. connection with ignition apparatus of explosive engines and having novel and improved means whereby the closing of the circuit can be accomplished only by an authorized person, and the present invention is an improvement on the construction shown in my prior Patent No.-

1,171,629, dated Feb. 15, 1916. j

The invention consists in the details of construction and in'the combination and arrangement of the several parts of my improved circuit closer whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The'novel features of the invention will be carefully defined in the appended claims.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein,

Figure 1 is a view, partly in elevation and partly in section, of a circuit closer constructed in accordance with an embodiment of my invention; Fig. 2 is a sectional view taken substantially on the line 22 of Fig. 1; Fig. 3 is a detail sectional view particularly illustrating the contact arm 14 as herein included; and Fig. 4 is a View, partly in elevation and partly in section, illustrating certain details of the invention as herein included.

As disclosed in the accompanying drawings, 1 denotes a casing of predetermined configuration and dimensions and preferably formed of metal and having produced in one face thereof the visual openings 2 normallyv closed by the spring-pressed flap 3, said openings being also preferably permanently closed by the glass panels 4 or other transparent materia Suitably secured within the casing 1 and to the wall thereof opposite to the wall provided wlth the openings 2 is the member 5 substantially in the form of an inverted L in cross section and produced from a suitable non-conductive material and removably secured to said member 5' are' the longitudi nally arranged narrow plates-or strips 6 and 7 of conductive material and from which extend the stub shafts 8 in electrical connection with said plates 6 and 7 and rotatably Specification of Letters Patent. Patented Get. it), 1916. I

Application filed October 1, 1915. Serial K0. 58,557.

supported upon each of said shafts 8 is "a 7 disk 9 produced of an insulating material.

As herein disclosed, each of the disks 9 has its periphery provided with a plurality of equidistantlyspaced pockets 10 in communication at their inner extremities with the laterally disposed recesses 11. Each of said pockets is adapted to have removably seated therein a contact member 12, preferably a headed screw, the inner extremity of which being adapted for engagement with an extremity of a contact arm 14 rotatably supported upon a shaft 8 and in electrical vconnection therewith. As herein embodied,

the free extremity of the contact arm 14 is laterally disposed, as at 15, said lateral portion being insertible within a recess 11 and having its free extremity redrawn as indi cated at 16 to assure proper engagement with the inner extremity of the contact member 12. i

The heads of the contact members 12 are disposed. above the periphery of the disk 9 and are preferably convex and adapted to be received within the jaw 17 produced in the spring plate 18 secured to the under face or shoulder of the foot of the plate 5. As herein embodied, the jaw 17 is produced by corrugating the spring plate 18 transversely with said corrugatedportion offset a direction toward the disk 9 so that the coaction between the jaw and the head of a contact member 12 serves to holdthe disk 9 normally against axial rotation. It is also to be perceived that the portion of the foot of the plate 5 immediately above the jaw 17 is recessed in order that the requisite flexibility may be given to the plate'18 and in order that the plate 18 may possess such sufiicient spring action as to eflectively maintain its engagement with the contact member 12 I bridge said recess 19 with a supplemental flat spring 20 underlying the spring plate 18.

Disposed through the foot 21 of the plate 5 is the conductor plate 22, one extremity above the top of the foot 21 and is adapted to have an electrical conductor a secured thereto in any way which best meets with v the necessities of practice and a second conductor b has an electrical connection with the plate or strip 7 in any preferred manner, one of said contacts a or 6 being an electrical connection with a suitable source of supply and the second serving to carry out the current.

Each of the disks 9 is loosely mounted upon its coacting shaft 8 and is capable of slight endwise movement thereon and the outer extremity ofthe axial opening of the disk isenlarged as at 23 and in which is positioned the expansible member 24, herein disclosed as a conventional coil spring, surrounding the shaft 8 and bearing against the head 25 formed at the outer extremity of the shaft 8 and whereby electrical contact between an arm 14 and a plate 6 or 7 is assured, and in order to permit an unobstructed passage of the arm 14 across the plate Ger 7, I. interpose between said plate and arm a metallic washer 26 surrounding the shaft 8 whereby it will be perceived that the expansible member 24 assures a constant electrical contact between the arm 14, the washer 26 and the plate 6 or 7.

The inner face of each of the disks 9 has secured thereto a dial 27 provided with the indicia 28 coacting with the contact members 12 in a manner and for a purpose which is believed to be clearly apparent to those skilled in the art to which my present invention appertains, and said indicia are adapted to be exposed through the openings 2 hereinbefore referred to, and whereby an authorized person may determine whether or not the disks have been properly manipulated in order to close the circuit. The dials 27 are secured directly to the disks 9 and at their axial centers are provided with the stems 29 adapted to register with additional openings 30' produced in the casing 1, said stems having their outer extremities provided with a suitable member 31 whereby the requisite axial rotation may be imparted to the disks.

From the foregoing thought to be obvious that a circuit closer constructed in accordance with my invendescription, it is tion is of an extremely simple and comparamy invention is susceptible of some change and modification without material departure from the princi les and spirit thereof and for this reason do not wish to be understood as limiting myselfto the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice.

I claim:

1. A circuit closer comprising, in combination, a supporting member having a laterally extending flange, the under surface of said flange being provided with a recess, a member rotatably mounted upon the supporting member below the flange, a contact member carried by the disk and extending beyond the periphery thereof, a contact arm coacting with the contact member, and a sprinig plate secured to the under surface of the ange of the supporting member and.

bridging the recess in said flange, the portion of the spring underlying the recess bein provided with a downwardly directed 0 set jaw to receive the extended portion of the contact member.

2. A' circuit closer comprising, in com bination, a supporting member having a laterally extending flange, the under surface of said flange being provided with a recess, a

member rotatably mounted upon the supporting member below the flange, a contact member carried by the disk and extending beyond the periphery thereof, a contact arm coacting with the contact member, a spring plate secured to the under surface of the flange of the supporting member and bridging the recess in said flange, the portion of the spring underlying the recess being provided with a downwardly directed offset jaw to receive the extended portion of the contact member, and a supplemental spring underlying the first named spring and bridging the recess. 4

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

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