US2220520A

US2220520A - Heater

Info

Publication number: US2220520A
Authority: US
Inventors: Robert O Hein
Original assignee: Sears Roebuck and Co
Current assignee: Sears Roebuck and Co
Priority date: 1937-06-09
Filing date: 1937-06-09
Publication date: 1940-11-05
Anticipated expiration: 1957-11-05

Description

R. HEIN Nov. 5, 1940.

HEATER VFiled Jpne 9, 1937 0 Inf/ew: @ZZ

,i i l* Patented Nov. 5, 1940 PATENT OFFICE t HEATER Robert O. Hein, Chicago, Ill., assignerr to Sears, Roebuck and Co., Chicago, Ill., a corporation of New York Application .lune 9, 1937, Serial No. 147,290

5- Claims.

This invention relates to heating and other air conditioning, and is concerned more particularly with an air flow control for hot water and other heaters for the passengers of conveyances, occupants of rooms and in other installations.

An object of my invention is to provide aheating device with manually releasable louvers or blades adapted to be automatically vopened to discharge heated or other air.

A further object is to provide a heater with an opening whose size is variable.

Another object is to provide a device of the character lreferred to with i doors or louvers adapted to be automatically held open to a predetermined extent.

It is also an object of the invention toprovide a gang of louvers adapted to open simultaneously and to be individually or 'simultaneously adjusted and closed.V

It is another object to provide an air conditioning device for an automobile and readily accessible to the driver and/or apassenger.

Another object resides in the provision Aof a gang of louvers of such size as to aiord adequate volume of air discharge for an enclosure such as an automobile, and adapted to be closed simultaneously or substantially so by a single movement ofthe hand or foot of an occupant.

Further objects and advantages of my invention will appear as the descriptionproceeds.

The invention is illustrated in the accompanying drawingjn which: Y Y

Fig. 1 is a horizontal sectional view through a heater embodying my invention, taken as indicated by the line Ihl in Fig. 2.

' Fig. 2 is an enlarged vfragmentary vertical sectional view, taken as indicated by the line II--II in Fig. 1.

Fig. 3 is a fragmentary horizontal sectional view showing louvers in various adjustments.

Fig. 4 is a fragmentary diagrammatic View showing a Bowden wire release installation for the louvers.

Fig. 5 is a reduced front elevation of the device.

Referring now more particularly to the drawing,` there is shown a hot water heater such as may be found on vehicles such as automobiles, although it will be understood that a cooling or any other type of air conditioning or Ventilating apparatus may be employed since my invention resides primarily in the louver construction and control mechanism therefor.

The heating unit comprises in general a frame `I I, a motor I2, a suitable switch therefor (not shown), a fan I3, an air inlet I4 and a radiator I5, the connections to which are not shown, but may extend to the engine cooling system. The escape of heated air influenced by the radiator is controlled by louvers I6 in accordance with my invention.

Each louver is hinged at its top and bottom in any suitable manner to the frame and has ears I8 and I9 which receive the hinge pins 2D and 2l, respectively. A spring 22, anchored at one end to a stud 23, passes about the adjacent hinge pin 20 and has its free end engaged with the inner side 24 of the louver, constantly urging the louver to swing open.

Slidably and non-rotatably mounted within the frame as at 23 and 21 is a plunger rod 28 carrying, in juxtaposition to the inner sides of the closed louvers, as shown in Fig. l, a spring latch l29 adapted -to interlock with a hook or catch 3i) mounted on the inner side of each louver. The hook 30 has a. cam surface 3I which, upon closing of the louver, springs the free end of the latch and passes therebeyond sothat said free end snaps into the recess y32 in the hook and thus positively preventsopening of the louver.

Aspring 34 aboutv the plunger and engaged betweentheV frame and an abutment 35 on the plunger urges it outward so as to locate the latches in positions to automatically connect with the catches as the louvers are moved to closed positions. An abutment 36 on the plunger is engageable with the frame to prevent the spring 34 from moving the plunger too far.

' An end of the'plunger or rod 23 in accordance with one form of my invention has a button 38 which projects out of the casing or frame II at a point preferably where it is readily accessible to the hand of an occupant of the vehicle or other installation place. `Pressure on the button overcoming the resistance of the spring 34 willmove the latches out of all of the catch recesses 32 simultaneously, as shown in dotted lines in Fig. 3, whereupon the springsA 22 automatically swing the louvers open. Upon release of the button 38, the spring 34 returns the latches to their initial (full line) positions, where they are again ready to automatically snap into engagement with the louver catches, one or more at a time, when the louvers are swung to closed positions. 'Ihe overall length of the gang of louvers may be as desired. In a vehicle installation it may be desirable to employ a gang whose overall length is such that with practically a single sweep of a hand a person may shut all or any number of the louvers.

The latches may if desired be positioned so formed in any suitable manner, as` by depressingI the casing. The projection of the nib in the path of the lug is preferably slight, and the lug and/r nib is resiliently flexible to such an extent as' to enable the lug, upon the application of manual force on the louver, to ride up over the nib so as to be frictionally engaged therewith. The length and location of the lug and the location of the nib will determine the limit to which the spring l22 swings the louver andthe angle through which the louver may be manually adjustedand frictionally held. Like pressure on the louver will release it from the nib, and the resistance of the spring 22 also is readily overcome when it is desired to shut the louver.

Each louver is prevented from rattling by the latches 29 when closed, by the spring 22 when partly open or ajar, and by `the frictionally engaged nib and lug when the louver is further open.

In the form shown in Fig. 1, the button is disposed at the casing, Where it may be pushed more conveniently by a seated passenger,-one near the driver, for example. Fig. 4 illustrates how the lonvers may be dual-controlled, i. e. independently by either the driver or a passenger, for example. To this end a Bowden Wire or other suitable remote control connection 43 is secured to the button 38a and terminates in a knob 44 at the instrument panel 45 or other support in easy reach of the driver, for example. By pushing either the knob 44 or the button 38a, the plunger 28 is moved as explained above. When the knob and button are released, the plunger is returned to its initial position by the spring 34. If desired the louvers could be controlled solely from the knob 44.

I am aware the reversals of parts may be resorted to, and that many other changes may be made and numerous details of construction varied through a wide range without departing from the principles of my invention, and I therefore do not purpose limiting the patentgranted hereon otherwise than as necessitated by the prior art.

I claim: l

l. In a Ventilating apparatus comprising a motor, a fan operated thereby, a casing havingan outlet for air from said fan,and-means in the path of air from said fan to said outletfor altering the temperature of the air; closure means for said outlet, cooperating latch means on said casing and said closure means and constructed and arranged 'to automatically interlock upon shutting of said closure means for holding said closure means shut, means for releasing said latch means, yieldable means for automatically moving said closure means to open position upon release of said latch means, said closure means being manually adjustable to diierent open positions, and means for yieldably holding said closure means in different predetermined adjustments.

2. An apparatus of the character described comprising a' casing having a plurality of doors, a catch movable with each door, a latch for each catch and supported by said casing in position to interlock with the cooperative catch when the corresponding door is shut, means for moving said latches simultaneously to release all of the interlocked catches, said means comprising a member on which said latches are mounted and projecting from said casing so as to be operated by hand, means for opening said doors upon release of said catches, and means for returning said latches to their initial positions where they will interlock with said catches when the doors are moved to closed positions.

3. An apparatus of the character described comprising a .casing having a plurality of doors, a catch movable with each door, a latch for each catch and supported by said casing in position to interlock with the cooperative catch when the corresponding door is shut, means for moving said latches simultaneously to release all of the interlocked catches, said means comprising av manually operable member jon which said latches are mounted, means. for opening said doors upon release of said catches, and means for returning said latches to their initial positions where they will interlock with said catches when the doors are moved vto yclosed positions.

'4. A Ventilating apparatus comprising a casing, a pair of doors therefor, a member provided with means projecting in the path of opening movement of a part movable with each door, said member being movable to carryv said means as a unit out of said path to allow both doors to be opened simultaneously, and means for opening said doors upon movement of .thelrst means. n 5. An apparatus of the character described comprising a casing having an opening, a door therefor, a spring engaged between said casing. and said door, interengageable means on said casing and door, said means being disengaged throughout a predetermined degree of movement of said door in response tothe springaction and being effective upon said interengagement to overcome the spring action, said means being frictionally slidable relativeto each other upon application of manualzforce to said door to adjustably hold said door at points beyond the zone of action of said spring.

ROBERT o. HEIN.