US1109940A - Electrical apparatus. - Google Patents

Description

Patented Sept. 8,1914

mom/Er WITNESSES YHE NORR'E N- RS CO.. PHOTD-LITHO., WASHINGTON. L C.

; nnrrnn s'ra'rns PATENT enrich.

HENRY E. REEVE, or NEW YORK, N. Y.

ELECTRICAL APPARATUS.

To all whom it may concern:

Be it known that I, HENRY E. Rnnvn, a

' citizen of the United States, and resident of New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Electrical Apparatus, of which the following is a specification.

My invention relates particularly to a construction for affordin a gas and liquid tight connectionbetween a casing and a lever for transmitting motion through a wall of the.

casing, as for instance, in the electric operating mechanism of my former applications. In the said applications I have shown and described in detail a construction in which the hermetically sealed casing contains the parts to be protected and the liquid and gas tight connection is effected by means of a suitable metallic diaphragm through which the transmitting lever extends. One of the plates of this diaphragm is connected to the I transmitting lever and the other to a wall of the casing having an opening through which the transmitting lever passes. I have found that the useful life of this diaphragm construction may be prolonged very greatly by aconstruction shown and described-in de-' tail hereinafterl These improvements consist in the employment of certain special bushings, flexible washers and collars where by the strain of flexure of the diaphragm so distributed throughout the diaphragm as to greatly reduce any tendency to fracture from prolonged or repeated vibrations.

Figure 1, is a front view of an electrical bell construction embodyinig the improvement-s of my invention, the front plate or cover of the casing being removed. Fig. 2,

is an enlarged cross sectional view. of the diaphragm embodying theimprovements of the present invention. Fig. 3, is a plan'view of the diaphragm with the collar, bushing and transmitting lever in section. Fig. 4, is a dropped perspective view showing the parts of the diaphragm and the parts for connecting it to the casing and transmitting lever. V

The casing 1 of any suitable shape and character, incloses such parts as it is desiredv to protect, for instance, the electromagnet 2, the armature 3 and the vibrator contacts 4 and 5 which are operated in a suitable manner by the electromagnet.

The bell or gong top 6 is mounted outside the casing and is struck by means of a ham- Specification of Letters Patent.

Patented Sept. 8, 1914.

Application filed February 17, 19 11. Serial No. 609,193.

mer or striker 7. The lever 8 passing through an opening in one wall of the casmg is connected at its inner end to the annature 3 and its outer end to thestriker 7. The water and gas tight connection between the transmitting lever and the. casing is effected by means ofithe diaphragm 9. While the diaphragm 9 is capable of supporting the transmitting lever and the attached parts I preferv to provide additional guiding and supporting means as for instance, the pivots 10 which constrain the diaphragm and lever 8 to vibrations in a single plane. This diaphragm .is formed of thin metal plates 14 and 15 preferably of oval outline as shown in Fig. 3 united by a tight joint at their periphery. The upper plate 14 is secured to the bush1ng-16 to which the lever 8 is secured. The inner end of the bushing 16 has a flange 17 Between theflange 17 and the plate 14 I have arranged a flexible metal washer18. A similar flexible metal washer 19 is mounted above the plate 14. The colhr 20 fits on the bushing 16 above the washer 19 and the parts are drawn and held together in a suitable manner, for instance, by turning over the outer upper edge of the bushing 16 as at 21. The metal plate 15 is secured to the casing 1 in a similar manner. A hollow bushing 22 through which the lever 8 passes freely has aflange 23. flexible metal washer 24 is located between the flange 23 and the plate 15. A similar flexible washer 25 is arranged below the plate 15 and the parts are clamped together by means ofa collar 26 which fits onthe bushing 22 being drawn and held together.

for instance, by turning over the lower outer irim of the bushing 22 as-at 27. I prefer to coat thelower and upper surfaces respectively of thewashers 19 and 18 by suitable paint or enamel so as to aflorda better connection and insure a tighter joint. Simi larly the lower and upper surfaces of the The.

but it should be understood that the method of attaching the lever 8 to it is immaterial as is also the distance which the lever extends into it. It may even be closed on the upper end as shown in Fig. 4.

What I claim is 1. In a device of the character described, a diaphragm consisting of two flexible plates connected at their peripheries, flanged bushings passing through said plates and having their flanges between said plates, flexible washers on said bushings between said flanges and said plates, flexible washers on said bushings outside of said plates and collars clamping the plates betwen the flexible washers against the flanges of the bushings, said washers extending substantially beyond the edges of the flanges andcollars respectively and a transmitting lever secured to one bushing and passing through the other bushin 2. In a construction of the character de scribed, a bushing, a transmitting lever passing therethrough, a flexible metallic plate, a flange on said bushing, flexible washers arranged on opposite sides oi. the plate and a collar on said bushing for clamping said flexible washers and plate against said flange, said washers extending a substantial distance beyond said flange and collar respectively. i

-3. A construction of the character described comprising a casinghaving an opening, a transmitting lever' passing through said opening in said casing, a flexible metal plate means for connecting its periphery to said casing and means foroonnecting the cen tral portion of saidv plate to said transmitting lever, said means including flexible washers on both sides of said plate and means for clampingsaid washers and plate,

said washers extending outward a substair tial distance beyond the clamping means.

4. In apparatus of the character deflexible metallic washers lying flat against the opposite faces of the diaphragm and interposed between the'said rigid clamping means and the respective faces of the diaphragm, said flexible washers extending,

substantially beyond the rigid clamping means to elastically support the diaphragm and thereby upon vibration of the lever to reduce the deflection of the diaphragm from the plane of the'rigid clamping means.

6. The combination with a casing and a vibrating lever passing therethrough, of a flexible connection between the lever and casing comprising, an elastic metallic diaphragm of oval shape arranged tovibrate about a line corresponding to the shorter axis of the oval, means for connecting the:

periphery of said diaphragm with the casing, spring metal washers of oval shape applied to the opposite faces of the diaphragm with the axes of such washers alined with the corresponding axes of the diaphragm and rigid clamping means carried by the lever securing the spring Washers in flat engagementwith the facesof the diaphragm,

the said washers projecting beyond the rigid clamping. means to thereby reduce the degree of deflection ofthe diaphragm from the. v

plane of the rigid clamping means when the lever is vlbrated.

HENRY E. REEVE.

Witnesses J. S. ALLYN, E. BnAnroRn.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of Patents,

Washington, D; C.

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