US978849A

US978849A - Circuit-closer.

Info

Publication number: US978849A
Application number: US51786509A
Authority: US
Inventors: Henry B Collier
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-09-15
Filing date: 1909-09-15
Publication date: 1910-12-20
Anticipated expiration: 1927-12-20

Description

H. B. COLLIER.

GIROUIT CLOSER.

APPLIOATION EILED SEPT. 15 1909.

Patented Dec. 20, 1910.

HENRY 'B. COLLIER, OF PRAIRIE GROVE, ARKANSAS.

CIRCUIT-CLOSER Application filed September 15, 1909. Serial No. 517,8(55.

To all 1137mm it may concern."

Be it known that l, llnnn'r B. COLLIER, a citizen of the United States, residing at Prairie Grove, in the county 01 lVashington,

5 State of Arkansas, hare invented certain .new and useful Improvements in Circuit- Closers; and I do hereby declare the following to. he a full, clear, and exact description or the invention, such as will enable others is skilled in the art to which it appertains to make and use the same,

This invention relates to circuit closers and has special reference to a circuit closer adapted to he used on normally closed ciri5 cuits in connection with door or other hinged closure for openings into a building or the like.

One object oil the invention is to improve the general construction of circuit closers as for doors.

Another object of the inventimris toproride a circuit closer for closed circuit alarms which will open. automatically upon the swinging of a door on its hinge.

A third object of the invention is to provide a form of hinge adapted to control a circuitcloscr of this description.

W'rth the above and other ob ects in view the invention consists 1n gencralof a casing 30 wherein is mounted an improved form ct circuit closer, togt-rthcr with a novel hinge carrying a mornher arranged to actuate said circuit closer. v

The invention further consists in certain as novel details of construction and combinato actors of reference indicate like parts in the several views, and Figure 1 is a detail View in side elevation of the hinge employed in corn nection with this closer. Fig. 2 is a View showing the circuit closer together with the 45 hinge and the connection between the hinge and circuit closer, the. circuit closer being shown in elevation and the casing in section the betterto discloselthc parts. I Fig. 3 is a detail )erspective view of that portioniof the to circuit closer. which directly connected with the hinge. Fig. 4 IS a horizontal sec tional View through the circuit closer and the hinge and showlng the member. illustrated in Fig. 3 in top plan, the. door which 65 the hinge supports being shown as closed.

Fig. 5 is a similar View but showing the door Specification of Letters Patent.

the door.

cured upon the base before the latter is se-;

Patented Dec. 2%), H310.

open. Fig. (3 is a view similar to Fig. 5 hut illustrating a slight n'ioditication. This circuit closing device is'cnihodicd'in a contact device and. a specific form of hinge .which is associated with the contact device.

The contact device comprises a hase which is secured by means of screws otherwise upon the wall of the roonrin which the device to he placed, the base being attached adjacent. the hinged edge or At 11 is a casing which is see cured to the wall. In order to provide for this feature the casing is formed, at each corner and at its upper side with a small tri-anguhn? web 12 each provided. with a threaded opening into which a screw 13 is threaded, said screw being passed through the base from the. back face to the front face. The casing 11 is in this manner s1- cured uponthe base so that it cannot he removed except by removing the latter from the wall. 1 h-lock of insulation indicated by the numeral 14; is secured. upon the base 10 adjacent one end of the casing 11 and fixed upon this block at one of its'ends is a leaf spring contact 15, the "free or unat-' tachcd portion of the spring extending in parallel;relation with respect to the base 10 and spaced therefrom as will be readily un derstoodby an inspection of Figs. l and A similar contact spring 16 secured directly to the base 10 as indicated by the numeral 17 and this latter strip is .tormed with an integ 'al lateral extension 18 which extends beneath the free or unattached end of the strip and is normally out of contact therewith, the said strip being i'lat normally against the base. its lateral extension 18 proyicled with a yoke 19 which projects in a direction from the base 10 at right angles from said extension. The function of this yoke 19 will he pres cntly fully described.

The leares of the hinge heretofore men tioned are indicated each by the numeral 20 and the pi'ntlc ot' the hinge by the numeral 21, the'knuckle 22 of one leaf 2O heingrcut away as indicated by the numeral 23 to receive a collar Ql uhich is pivotally engaged upon the pintle 21 and is .freely rotatable thereon. Not only is the knuckle 22 of this leaf cut away as described but the leaf itself is formed with a notch 25 which, when the hinge leaves are folded, receives a lug or. abutment'QG formed integral with the collar The strip 16 has 24. The collar is formed in addition to the lug 2G with an integral finger 27 which projects through a slot 28 formed in one end of the casing 11 and also extends at its end into the yoke 19 upon the lateral extension 18 of the contact 16. From this end of the easing projects ahousing 11 which extends up to the hinge and incloses the finger 27 to prevent tampering therewith. .As is clearly shown in the drawings, and moreparticularly in Fig. l thereof, when the door, indicated by the numeral 29, is closed, or in other words when the hinge leaves are folded to lie one against the other, the leaf other than the one in which the notch or recess 25 is formed abut-s or bears against the lug 26 and forces the lug into the recess 25 and in doing so, it turns the collar 2% to a slight degree upon the pintle 21 as a pivot and swings the finger 27 in a direction away from the door casing or frame. This movement of the linger 27 serves to pull upon the yoke and in doing so to bring the lateral extension 18 of the spring contact 16 into contact with the free or unattached end of the leaf spring contact 15 thereby closing the circuit so far as this contact is concerned. The contact 16, as has lcretofore been stated, is of leaf spring material and normally tends to lie flat against the base 10 so that when the door 29 is opened as illustrated in Fig. 5 of the drawings, the leaf of the hinge other than the one in which the .rcccss 25 formed will be out of engagement with the lug 26 and the spring contact 16 will act by its resiliency to draw upon the yoke 19 and swing the finger '2? in the 'directionof the door casing or frame, it at the same time moving out of contact with the spring contact member 15.

From the foregoing, it will be understood that as long the door is closed, the main circuit is closed as far as the contact associated with the door is concerned and that as soon as the door is opened, the main circuit will be opened. As clearly illustrated in Fig. 5 of the drawings, the lug 26 when released by the hinge leaf which engages with it when the door is closed, projects slightly beyond that face of the recessed hinge. leaf against which the other leaf folds so that it will be positively engaged by the last mentioned leaf when the door is closed.

In the form of the contact illustrated in Fig. (i of thc drawi1igs,-the lug 26 is formed of greater thickness than the thickness of the hinge leaf in which the notch or recess formed and the other hinge leaf is formed at that point with a depression 30, which while it partly receives the lug 26, does not interfere with the action of the hinge leaf erases in engaging the lug and forcing it into the recess 25. The advantage accruing from the provisioii of a construction such as illustrated in this figure lies in the fact that it is impossible to insert a knife blade between the hinge-leaves when the door has been opened to a very slight degree and hold the lug in the recess, thereby preventing opening of the contact- 16.

Leading from the contact 15 is a wire 31 and leading from the contact 16 is a similar wire 32. These wires form part of a normally closed alarm circuit not deemed neces sary here to be shown as this contact arrangementmay be utilized with any normally closed circuit forming a part of an alarm system. It will be readily understood by those skilled in the art that the opening of the door will, in the immner above set forth, break this normally closed circuit and thereby actuate the alarm mechanism.

It is obvious that minor changes may be made in the form and construction of this invention without departing from the material principles thereof. ltis not therefore desired to confine the invention to the exact form herein shown and described, but it is wished to include all such as properly come within the scope of the appended claims.

Having thus described the invention, what is claimed as new, is

1. A circuit closer for alarm circuits comprising, in combination with a hinge, a pair of contacts, one of which is movable to position against the other, and a member pivoted upon the pintle of the hinge and formed with a lug which is engageable by one leaf of the hinge when the said leaf is swung to lie against the other leaf, the last mentioned leaf being formed with agtcess in which said lug is received when the leaves are folded, said member engaging a port'ion of said movable contact.

2. A circuit closer for alarm circuits comprising, in combination with a hinge, a pair of contacts, one of which is movable to position against the other, and a member pivoted upon the pintle of the hinge and formed with a lug engageable by one leaf of the hinge upon swinging movement in one directlon whereby the said member will he swung upon the pintle, the said movable contact being formed with a yoke in which the member is engaged.

In testimony whereof, I aflix my signa-- ture, in presence of two witnesses.

HENRY B. COLLIER. Witnesses:

ED. F. BAIS, J. V. Emns'ron.