US1524063A - Fire clock - Google Patents

Description

Jan. 27. 1925. I 1,524,063

J. JSWANBERG Fm: CLOCK Filed Nov. 20, 1922 \/E :1... all 20S Swanfier I Patented Jan. 27, 1925.

FIRE

Application filed November To all whom it may concern:

Be it known that I, JULiUs SwANBnne, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook 5 and State of Illinois, have invented certain new and useful Improvements in a Fire Clock; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accon'ipanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates to improvements in alarm bells or gongs constructed for the purpose of automatically giving an alarm in case of fire and has for one of its objects the provision of a self-contained improved type of a fire alarm gong adapted to be convenicntly mounted directly in the room or place to be protected against fires, and further designed so that the gong will be operated automatically when a predetermined temperature has been reached.

One of the objects of this invention is to provide a simple and effective individual fire alarm device which may be readily mounted in any convenient place.

Another object of this invention is to construct a self-contained automatic fire alarm bell.

A still further object of this invention is to provide a fire alarm device with an improved means which normally holds the alarm mechanism from operation and which is releasable by heat.

A further object of this invention isthe construction of an improved fire alarm apparatus having a simple and effective method of operating the alarm device and a mechanism which 1S positively operated and composed of a minimum of parts and therefore not liable to get out oforder:

It, is furthermore an ob ect of this invention to provldea compact automatic alarm in a place which is to be safeguarded aga nst fires, said alarm mechanism having a locking means for holding the alarm spring against releasing movement until apredetermined temperature has been reached which is sufiicient to fuse a fusible metal or thermostatic device which ordinarily holds the alarm means against movement.

Another and further important object of this invention? is the construction of a single mechanism adapted to be installed directly UNITED STATES PATENT OFFICE.

JULIUS SWANBE'RG, OF CHICAGO, ILLINOIS. ASSIGNQB, TO FAIBART INSTRUMENT COMPANY, A CORPORATION OF ILLINOIS.

CLOCK. i

20, 1922. Serial No, 601,962.

automatic fire alarm device adapted to be set to ring as soon as a thermostatic locking connection.- forming a part of the alarm has been broken.

Still another important object of the invcntion is the provision of such an automatic fire alarm device which shall be simple and easy of construction, small and therefore readily portable, and capable of being mounted in any desired place, but which will give an alarm very effectively and communicate the same to quite a considerable distance.

Other and further important objects of this invention will appear from the disclosures in the accompanying drawings and the following specification.

The invention (in a preferred form) is illustrated in the drawings and herein-after more fully described.

On the drawings:

Figure 1 is a front elevation of the im proved mechanism, the bell gong and the thermostatic device being removed.

Figure 2 is a side elevation, partly in section, showing the improved apparatus with the bell gong and the thermostatic device in position.

Figure 8 is a view similar to Figure 2 showingthe construction of the spring and gear for operating the alarm or gong mechamsm.

Figure 4a is a front view of the apparatus with the cover removed.

Y As shown on the drawings:

The reference numeral 10 indicates a circular plate or cover forming part of the easing of the machine having a cylindrical body 12 therefor and a back plate 14:. VVithi-n the case formed by the plates 10 and 12 and the cylindrical member 12 iscontained a driving device for the apparatus which is similar to an ordinary clock mechanism comprising a spring 16 and gears 18 20 and 22. The spring 16 is adapted to be wound by a key ,)referably inserted into the back of the apparatus and it thereby drives the gears 18, 20 and 22. The gear 22 is in driving connection with a smaller gear mounted on a shaft 24- passing through the front plate 10 and having riveted or otherwise fastened thereto a circular plate 26. This plate 26 when being turned by the action of the spring and gears actuates an offset crank'28, one end of which. is eccentric-ally mounted thereon 'at,30, the other end being in turn mounted at 32 for pivotal movement on an extended lug 34 on an arm 36 pivoted at 38 to the plate 10. The end of this arm 36 is made in the form of a double bell clapper as shown at 40 and is ronstructed in an enlarged T-shape as shown in Figure 1, and the ends thereof are adapted to operate as clappers to ring the bell. member 42 or gong when the device is set in to operation. An upwardly extending, preferably triangularly shaped member or stop 44 is mounted on the end of the arm 36-4O which, is adapted to coact with an extension 46 which projects outwardly through a slot 48 in a hollow bracket 50 providedon the outer face 10 which both supports the hell or gong member 42 and is hollowed to contain a coiled spring mounted therein having an upwardly extending pin which is normally held in I downward compressed position by means of n Mi the thermostatic member 52 composed of two relatively shdable plates soldered together .by a. readily fusible metal mounted in a cage 54.

The operation is as follows:

The spring 16 being wound up normally has a-tendency to cause rotation of the gears 18, 20 and 22 which'will tend to revolve the shaft 24 and its attached circular plate 26, thereby causing an eccentric motion of the end of the lever 28 around the axis 24, it being mounted on the plates 26 at 30. This will cause a reciprocation of the clapper member 3640 thereby ringing the bell 42. However the clapper member 36-40 is normally held from reciprocation by the contact of the pin 46 extend ingoutwardly through the slot 48 and hearing against the side of the triangular upstanding member 44 on the clapper member (ES 40. This is maintained in downward position against the compression of the sarin in the sn 3 ort 50 b 1 means of a ain which is held in downward position by reason of its relation-to the thermostatic fusible member 52 in the cage 54. It will be seen that the tendency of the spring will be to push the pin and its projecting member 46 upwardly and this will occur as soon as the surrounding temperature rises surtlioiently to melt the fusible member 52 which will then release the pin 46 and its coacting member 42 allowing the bell to ring and thereby giving the alarm.

'It will be seen that herein is provided an improved individual fire alarm device which'is adapted to be constructed in portable form and is arranged to be automatically set in operation when exposed to a temperature above a predetermined degree, which is regulated by the composition of the fusible alloy 52.

Fire alarm devices such as are used at the present time are usually connected in a fire alarm or protective system to he controlled or ope 'ated from a distant point or outside source of energy and are not only complicated and expensive to install and maintain in working condition, but are not inde u-ndent and readily transferable from place to place so that they will be within the means of average users and capable of being located in any desired place at will. This invention will overcome the above objections to fire alarm apparatus and will provide a portable device which may be readily applied anywhere by anyone under all circumstances, and will be very efficient and prompt in operation in giving any alarm of tire or heat above any given predetermined degrees.

It will also be seen that the same may be used again if desired if the fusible material has: been melted as it can be readily replaced.

I am aware that Various changes may be made and numerous details of construction varied without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted thereon otherwise than necessitated by the prior art.

I claim as my invention:

1. An automatic alarm comprising a cas ing, a bell thereon, spring actuated means for ringing said bell, and means on said bell ringing means adapted to hold the same against operation until a predetern'iined temperature has been reached, said means including an integral outwardly turned member having an angular edge adapted to coact with a spring impelled pin held in position by fusible means.

2. An automatic tire alarm device inchul ing a gong. actuating means therefor, means for restraining the same from actuation. a

sounding mechanism for said gong, said sounding mechanism being composed of" a rotatable plate, a lever eccentrically mounted thereon at one end, the other end of said lever adapted to act to reciprocate a clapper member having its end shaped in arms to coact at both extremities of its motion with the gong member.

3. An automatic fire alarm device including a gong, a. sounding mechanism for said gong. said sounding mechanism being composed of a rotatable plate, a lever eccentricat ly mounted thereon at one end. the other end of said lever adapted to act to recipio oate a clapper member having its end shaped in arms to coact at both extremities of its motion with the gong member, and means on said gong member adapted to normally maintain the same against reciprocation.

4. An automatic fire alarm device including a gong, a sounding mechanism for said gong, said sounding mechanism being c0n1- posed of a rotatable plate. a lever eccentrically mounted thereon at one end, the other llll end. of said lever adapted to act to reciprocate a clapper member having its end shaped in arms to coact at both extremities of its motion with the gong member and means 5 on said gong member adapted to normally maintain the same against reciprocation, said means including an outwardly turned integral member having a sloping edge adapted to coact with a spring impelled pin held in retracted position by means of a fusible member adapted to be released when a predetermined degree of heat has been reached.

In testimony whereof I have hereunto subscribed my name in the presence of two 15 subscribing Witnesses:

JULIUS SVVANBERG. lVitnesses CARLTON HILL, OSCAR HARTMANN.

Images