US1837000A - Temperature regulating device - Google Patents

Description

Dec. 15, 1931. A. L. WERTZ 1,837,000

TEMPERATURE REGULATING DEVICE Filed Sept. 9, 1929 Patented Dec. 15, 1931 PATENT OFFICE AUSTIN L. WERTZ, OF LAKEWOOD, OHIO TEMPERATURE aneuna'rme DEVICE Application filed September 9, 1929. semi m5. $01,203:.

My invention relates to temperature regulating and heating devices and more particularly to such devices adapted for the controlling of temperature lubricant contained in dis ensers. i

n lubricant dispensers of the type which are not buried in the ground, the lubricant is subjected to great changes in temperature.

The heavier lubricants or oils become very viscous in the winter time and are normally verydiflieult to pump.

An object of my invention is the provision of means for controlling the temperature of the oil in such a dispenser to facilitate pumping thereof.

Anotherobject is the provision of means to indicate when the temperature of the oil falls below a predetermined value and the provision of other means to heat the oil for maintaining it within a predetermined range of temperatures.

Other objects and advantages of my invention will become apparent from the following description.

In the accompanying drawings,

I Fig. 1 is an elevational view of a conventional type of lubricant dispenser showing my invention incorporated therein;

Fig. 2 is an enlarged sectional view of my temperature controllin device;

Fig. 3 is an enlarge vertical section of a fragment of that shown in Fig. 2, and taken in a plane at right angles to Fig; 2;

Fig. 4 is a cross sectional view adjacent one end of the heating element and looking in the direction of the heating element to show the means for spacing it from the tubular container; and p Fig. 5 is a diagramillustrating the electric circuits of my invention.

. hedispenser shown in Fig. 1 maybe of any conventional construction comprisin a tank or oil container 11 having a suita le mechanism. 12 mounted thereon, for dispensin oil from the tank.

y invention; is applied to the dis enser by inserting the samein the tank into t e position shown in dotted outline in Fig. 1. V Numeral 13 represents heatin elements of the electrical resistance type 'w ich are electrically connected in parallel by jumpers 14 and 15, and in parallel with an incandescent light bulb 16 by conductors 17 and 18. A- conductor 19 connects the heaters in series with a thermostatic element 21 having a con- 56 tact 22 thereon which is normally but of en gagement with but adapted to engage contact 23 on'the spring conductor 24wh1ch is adjustable by means of a set screw 25 and a nut 26 for the purpose of predetermining the temperature below which the contacts 22 and 23 become engaged for completing a circuit through the heaters and lamp in parallel, all in series with the thermostat, A conductor 27 leads from the lower end of the heaters to the line conductor 28 which is also connected by a screw 29 to conductor 17. Conductor 31 leads from the spring conductor 24to the other line conductor 82 for' completing the circuit whenever the teni erature-of the .70 region of the thermostat fal below a degree for which it is adjusted to operate. 7

The heating elements 13 'are positioned in the lower end of a metal tube- 38 and held in spaced relation thereto by set screws 35175 and lock nuts 36 thereon, A dia hragm or partition 37 preferably composed 'of highgrade insulating material separates the lower end of the tube from the'upper end to substantially prevent transmission of heat up; wardly, thus'-requiring.=the'heat from below to conduct outwardly into the oil which normally surrounds the tube.

The thermostat operates b heat which is conducted inwardly throu the tube 38' from the oil. Were it not or the artition 37, heat from the elements 13, woul operate. the thermostat too quickly andholdith 6 1 tacts 22 and 23 apart and prevent useful op ration of the device.- "1

a The tube 38 is formed with a closed bottom and the top is closed by a cap 39 and a vertical conduit 41 fixed thereinto. The conduit 41 extends'through the top of the tank'or dispenser and is provided-with-a lurality'of openings 43 for the escape of he therein and for ventilation.

The bulb 16 is fitted in a socket 4 5' fixed developed {a casin 46 which is provided was an opening i8v aving atransparent c1o sufe'47 thereupstanding lug 53 on the partition 37 and 8 extends through an abutment plate 54 against which the end of set screw 25 is adapted to engage, also a vertical portion 55 of the supporting member 56, and plates 57 and 58 of insulating material.

Through the upper end of the support 56 asses a bolt 61 which is insulated therefrom y insulating strips.62 and 63. The bolt 61 is in contact with the thermostatic element 21 and passes through but is insulated from the spring conductor 24. To the outer end of bolt 61 is secured conductors 18 and 19 by nuts 65 and 66 electrically connecting them with thethermostatic element 21.

In operation the tube 38 is immersed in oil within the tank or container and when the temperature of the oil drops below a predetermined degree, the thermostatic element closes the contacts 22 and 23, thereby completing an electric circuit through the electric bulb and through the heaters in parallel. When the heaters raise the temperature of the oil abovethe predetermined temperature, heat from the oil is absorbed by the thermostat which again opens the contacts 22 and 23, thereby breaking the electric circuit and shutting oil the heaters and the light.

I claim as my invention:

1. A temperature control device for a lubricant dispenser comprising an electric circuit including a heating element and a thermostatic circuit breaker in series, a closed bottom tube of heat conducting material adapted to be immersed in the lubricant, a heat insulating partition dividing the interior ofsaid tube into two compartments,'said heating element being-in one of said compartments and said thermostatic circuit breaker being in the other compartment, a thermostatic support fixed to said partition and spaced from the walls of said tube, a conduit leading from one of said compartments to a point above the lubricant and having ventilating openings therein.

unit, said thermostat being operable to open said circuit when heated to the predetermined temperature and means for adjusting the temperature at which said thermostat is operable.

3. A device of the class described for controlling the temperature of lubricant comseries, means for spacing said heating means from the wall of said unit, means fixed on and wholly supported by said partition and supporting said thermostat spaced from the wall of said unit, said thermostat being op erable to open said circuit when heated to the predetermined temperature, means for adjusting the temperature at which said thermostat is operable, and an electric signal connected in circuit with said thermostat for indicating when the circuit is closed.

1 I In wltness whereof, I hereunto subscrlbe day of September, 1929.

my name this 4th AUSTIN L. WERTZ.

2-. 'Adevice of the class described for controlling the temperature of lubricant comprising a two-compartment unit formed of heat conducting material and adapted to be immersed inthe lubricant, an insulating partition forming a heat barrier between the two compartments, heating means in one of said compartments and 'a thermostat in the other compartment, an electric circuit including saidthermostat and said heating means in series, means for spacing said heating means from the wall of said unit, a'si lpporting member for said thermostat fixed to said partition and spaced from the wall of said

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