US977198A - Cooling-vane for second-class glower-lamps. - Google Patents

Description

A. KUSEBAUCH. COOLING VANE FOB. SECOND GLASS GLOWEB LAMPS. APPLICATION FILED NOV. 11, 1908.

977,198. Patefited Nov. 29, 1910.

' Pittsbur v vention will be specifically-described here- UNITED STATES PAT NroFmoE.

I ANTON KUSEBAUCH, OF PITTSBURG, PENNSYLVANIA, #SSIGNOR, IBY'MESNE- ASSIGN- MENTS, NEBNS'I LAMP COMPANY, CORPORATION OF PENNSYLVANIA.

COOLING-VANE FOB SECOND-CLASS GIOWEB-IJAHPS. I

- specification ctletten ratentg I Patented Nov. 29, 1910.

Application and November, 11, mos. 8eria1 Rp.482,122.

To all whom it may concern:

Be it known that I, ANTON KUSEBAUCH, a citizen of the United States, residing in in the county of Allegheny and State of ennsylvania have madea new and useful Invention in dooling-Vanes for Seeond-Glass Glower-Lamps, of which the following is a specification.

ThIS invention relates to incandescent lamps in which the filaments of second-class conductors.

One object of this invention is to produce a lamp of the class described of improved and compact design which will more perfectly fulfil the purpose for which it is intended than those now generally in use.

Other objects and advantages of this inlnafter, it being understood that chan es in form, proportion and minor details 0 construction may be resorted to without departin from the spirit of the invention.

In t e drawings accompanying th1s application and forming a part thereof! Figure 1 is a sectional elevation of a lamp embodyin my invention; Fig. 2 is a'section along tie line A A of Fig. 1 and illustrates a cooling device which forms a detail of my invention; Fig. 3 is a perspective view of a cooling vane employed in my invention; and Fig. 4 is an elevation of a modification of my invention.

In the lamp illustrated, I have embodied improvements which constitute my inven-' tion and which I believe perfect the operation of the lamp.

The cooling and ventilating system employed is an improvement and its use eliminates certain serious difficulties which have been previously encountered. In previous lamps a heavy overshoot of current passed through the glower directly after the glower was thrown into action by the automatic cutting out of the heater. This overshoot current sometimes reached a point far beyond the normal operating capacity of the lamp and resulted from the fact that the ballast contained heat absorbing material and furthermore that the heat radiated by the ballast was not sufficiently taken care of. These conditionsreacted on the ballast char-- are composed temperatures of the lamp were eventually.

reac ed. A current of 150 or 160 per cent. of the normal operating current of the lamp was forced through the glowers immediately after they were started. With this current flowin through the glower, even for a very limited period, it is evident that it was strained considerably, in fact was strained a greater amount than if the had been operated at a higher efliciency wiih the starting overshoot removed. The air cooling device as illustrated in the drawings overcomes these objectionable features and reduces the overshoot, (the abnormal current flowing through the glowers at the period of starting) to have accomplished this by radiating surface of the ballast and so constructing a ventilating system that the energy dissipated in the ballast wire and carried off in the form of heat is quickly radiated and convected to the surrounding air.

Referring to the drawings: The lampincludes a porcelain 5 on which a terminal plug 6 of the lamp socket porcelain 7, in which a screw'base 8 is secured, a ballast tube 9 which is located between the top and bottom porcelains, and

a cut out device 10 which is mounted on the,

top porcelain. These elements together with a number of separately formed bronze cooling vanes 11 are inclosed within a shell or casing 12. The mounting terminal 6 is secured to the porcelain 5 and consists of a cylindrical shell 13 fit a mounting socket and a circular terminal 14 which is surrounded by the cylindrical shell and is insulated therefrom.

A glower 15 and a heater 16 are' mounted on the screw base 8. This base is provided with ascrew plug 17, which is adapted to be screwed into 'a socket provided on the porcelain 7. Three separate terminals are provided on the screw base, one for the glower, one for the heater, and one common to the glower and the heater. Each of these terminals contact with a correspondingly located terminal provided in the socket of the porcelain 7 and connect the glower and the heater into their respective circuits. The ballast tube 9 incloses a ballast wire 18 and is filled with an inert gas. A base portion 19 is provided for the ballast tube which forms a mounting plug for the tube EXCESS 1 practically zero. I

provided with threads to increasing the r is mounted, a bottom or and terminals for the wire. socket 21 is secured to the porcelain 6 and is adapted to receive the base portion 19 and to electr1- cally connect it into the glower circuit of the lamp.

The terminals 13 and 14 are ternnnalsof the lamp circuit and the lamp circu t 1ncludes a heater circuit and a glower circuit connected in parallel. The glower, the'ballast wire and the magnetic coil of the cut out device are located in the glower circuit and the heater and the armature of the cutout device are located in the heater circuit. After the glower has reached a temperature at which it is a current conductor, the magnetic coil of the cut-out device is energized and, by attracting the armature, breaks the heater circuit and causes all of the current to flow through the glower circuit.

The cut-out device consists of a magnetic coil 22 which is included in the glower circuit and which controls a swinging armature 23 mounted on the support frame of the coil. 'The armature is included in the heater circuit when the coil 22 is not energized. The cooling device consists of a number of separately formed phosphorous bronze pieces or vanes 11 which surround the ballast tube 9 and are located between i it and the shell portion 12' of the lamp.

These pieces are so shaped that they mutually hold each other in place and by their own resilience firmly clutch the ballast tube, so that the heat is transmitted from the glass walls to the pieces by contact. The vanes, besides presenting a large radiating surface, form passa es and with openings 24 in the shell 12 aid in the production 'of convection currents which are effective in parrying off the heat generated in the balast.

The shell 12 is so formed that the, porcelain6 may be readily removed so that the ballast bulb may be replaced or that other repairs may be made to the lamp. A cover portion 26 through which the mounting and terminal plug 6 projects is provided for the shell 12 and secures the porcelain 6 in place.

In differently constructed lamp bodies I have found it convenient to employ the same shape of cooling vanes 11. I inclose these, however, in a cylindrical shell which when in place is concentric with the ballast tube and is supported on the tube by means of cooperating vanes 11. This construction is illustrated in Fig. 4. The ballast tube is secured in place in a socket 21 and the cylinder 28, in which the vanes ll-are mounted, is slid to place on and around the ballast bulb.. The vanes 11 are arranged in this cylinder precisely as they are shown in Fig. 2.

In accordance with the provisions of the patent statutes, I have described the princl 1e of operatlon of my invention, together with the apparatus which I now consider to represent the best embodiment thereof, but I desire to have it understood that the apparatus shown is only illustrative and that the invention can be means.

What I claim is:

1. In combination with a ballast tube, of a lamp the filaments of which are com osed of second class conductors, a cylin rical shell located concentrically with said tube and resilient vanes located within said shell and held by their resilience in contact with said tube. 2. In combination with the inclosing shell of a lamp in which the filaments are composed of second-class conductors, a ballast tube located concentric within said shell and resilient vanes located within said shell and held by their resilience in contact with said tube.

3. In combination with the inclosing shell of a lamp in which the filaments are composed of second class conductors, a ballast tube located concentricall within said shell carried out by other and a plurality of resihent vanes located 1 within said shell surrounding said tube and held in contact therewith.

4. In combination with the inclosing shell of a lamp in which the filaments are composed of second-class conductors, a ballast tube located concentrically within said shell and a plurality of radially extending cooling vanes located between said shell and said ballast tube.

5. In combination with the inclosing shell of the body portion of a lamp, aballast tube, a plurality of separately formed resilient cooling vanes surrounding said tube and lo-

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