US1440743A - Incubator attachment - Google Patents

Description

zum, 1923.)

0. P. MORRISON. INCUBATORv ATTACHMENT.

FILED AUG-3| 1922. 2 SHEETS-SHEET 2.

Patented nlan. Z, i923,

narran starts retain- OSCAR P. MORRISON, OF GOMEZ, TEXAS.

INCUBATOR ATTACHMENT.

applicati@ filed .August a, 1922. seriai ir. 579,539.

To all whom it may concern.' y l Be it known that OSCAR P. MORRISON, a citizen of the United States, residing at Gomez, in the county of Terry and State of Texas, have invented a new and useful lncu-A bator Attachment, of which the following is a specification.

This invention aims to provide a simple means whereby, when the temperature rises or falls beyond predetermined limits, inan incubator, a to admonish an attendant that the incubator needs attention. i

In the drawings v Figure 1 shows iii vertical section, a device constructed in accordance with the invention, parts being in elevation; Figure 2 is a section on the line 2 2 of Figure f1; Figure 3 is a section onl the line 3-3 of Figure 1.

The device forming the subject matter of this application is adapted to be used on incubators of widely different sorts, but by way of illustration, there is depicted in the drawings a portion 'of the frame 1 of an incubator, the incubator being heated by any suitable means, .such as a fiue 2 having a lateral branch 3 discharging into the incu-A bator. rlhe flow of air through the flue 2 may be under the control of a damper d, pivotally supported at 5 on a lever 6, fulcrumed intermediate its ends at 7 on the frame 1, and carrying an adjustable counterweight 8. The numeral 9 marks a thermostatically o-perated member such as a rod, pivoted at 1G to y the lever 6 and connected its lower end to a thermostat. 11 mountedv on a bracket 12 or otherwise. i

in carrying out the invention, a pair of supports 14; and 15 are mounted on 'the frame 1 of the incubator, both the upper support 1li and the lower support 15 being provided with openings 16 wherein the rod 9 slides freely. The lower support 15 is supplied with bearings 17.v rEhe numeral 18 marks a loop-shaped arm, the ends of which are mounted pivotally in the bearings 17. A

torsion spring 19 is disposed between the bearings 17 and is mounted on the aforesaid ends of the arm 18, one end 2O of the spring bearing on the support 15, and the other end 21 of the spring engaging one side portion of the arm 18, the function of the spring being to swing the arm in the direction of the arrow A in Figure 1. A trigger 22 is pivotally mounted at 23 on the support 15 and has an signal will be sounded thereby' opening 211, through which the rod 9 passes slidably, the rod being provided with a projection 25 adapted to engage the trigger, when the rod moves downwardly beyond a predetermined point. The trigger 22 isprovided at inner endwith a finger 26. A detent 27 is pivotally mounted at 28 on the support 15.

vThe upper support 141 is provided with a mechanism duplicating that described in connection with the lowersupport, and the mechanism on the support 111 may be dismissed with a brief catalogue of'parts, the said mechanism including a trigger 29 mounted pivotally at 3() on the support 111 and having an opening 81' for the passage of the rod 9, the projection on. the'rod being` marked by the numeral 32 and the iinger'of the trigger appearing at 33., The detent is denoted by the nuineraltand is mounted pivotally at 35 on the support 14.` The spring-actuated, loop-shaped arm is desig- -nated by the numeral 36 and the bearings whichV carry the arm for swinging movement are denoted by the numeral 37. The arm 36, when set free, tends toy swing in the direction of the arrow B in Figure. 1, and the projection 32on the'rod9 cooperates with the trigger 29 when the rod 9 moves upwardly beyond a4 predetermined point. 1n order to prevent 'the arm 18 from` swinging, in the CIK direction of the arrow A. against the rod9,

and in order to preveiitfthenrm 36 from swinging `in the direction of the arrow B against the rod 9, a stop is provided, the

same being, if desired, in the forni of a rod 38, mounted on the supports 14 and 15, and extended therebetween.

` A.' signal of any desired sort is located at a point remote from the incubator land may be disposed in the bed roomor oice of anattendant. rlhe signal may take the forni of a spring-actuated alarm 39 supported at 10 and including a gong 11 adapted to be engaged by a striker 42the winding button being marked by the numeral L13. The alarm is held set through the instrumentality of a pawl 14 pivoted at L15 0n the casing L16"v of the alarm and adapted to cooperate with a ratchet wheel 17, constituting apart of the alarm mechanism.

Connections 18 and i9 are provided, the same ordinarily being in the formy ofy fleXib le elements, having their upper ends mounted on the pawl ad. intermediate their ends, the connections 48 and 49 pass slidably over airleaders 59 on the frame 1 of the incubator, the connections passing inside of the frame. The inner end of the connection 49 is secured to the intermediate portion of the arm 86, whereas the inner end of the connection 48 is attached to the intermediate portion of the arm 18.

in practical operation, the arm 18 is swung rearwardly into the position shown in Figure 1, and the detent 27 is extended forwardly across the free end of the arm 18, the outer end oi the detent 27 being engaged with the finger 26 on the trigger 22, the spring 19 being under tension. In a similar way, the arm 8 6 is held by the detent 34 and the trigger 29.

Should tue temperature in the incubator fall to a point endangering the eggs in the incubator, the rod 9 will be carried downwardly by the action of the thermostat 11, the projection 25 on the rod 9 engaging the trigger 22 and swinging the trigger downwardly, the finger 26 being detached from the member 27, and the arm 18 swinging forwardly, under the action of the spring 19 until the arm strikesthe stop rod 28. Then the arm swings forwardly in the direction of the arrow A, a pull will be exerted on the flexible connection 48, the pawl 44 will be disengaged from the ratchet wheel 47, and the gong 41 will sound. n

Similarly, when the temperature in the incubator rises to the danger point, the pro` jection 32 cooperating with the trigger 39 will detach the trigger from the detent 34, the arm 36 being set free, and swinging in the direction of the arrow B against the stop rod 38, a pull being exerted on the connection 49, the y from the ratchet wheel 47 andthe gong 41 being sounded. v

lWhat is claimed is 1. 1n an incubator, a thermostically operated member' a signal; a spring actuatedI arm mounted i'or swinging movement; a connection between the arm and the signal; a detent cooperating with the arm to hold the same set; and a trigger mounted :tor swinging movement and engaged releasably with the detent, said member embodying pawl 44 being disengagedl means for disengaging the trigger trom the detent. y n l l 2. in an incubator, a thermostatically operated member; a signal; an arm mounted for swinging movement; a connection between the arm Vand the signal; a detent pivotally mounted at one end and extended across the arm to hold the arm set; and a trigger mounted for swinging movement and engaged releasably with the detent, the thermostatically operated member being movable within limits, independently of the trigger, and embodying a projection adapted to engage the'trigger when said member has moved beyond a predetermined point.

3. in an incubator, a thermostaticalljf operated member; a signal; a spring-actuated arm supported for swinging movement; a connection between the arm and the signal; a movable detent coacting with the arm to hold the arm set; and a movable'trigger engaging the detent releasably, said member embodying means for engaging' the trigger, to release the trigger from the detent, after said member has moved a predetermined amount.

, 4. in an i'cubator,r a thern'iostatically operated member movable in opposite directions; a signal; spring-actuated arms supported for swinging movement; connections between the arms and the signal; de-

tents cooperating with the arms to hold they same set; triggers mounted for swinging movement and engaged releasably with the detente; and projections on the thermostat ically operatec member, one projection cooperating' with one trigger to release the same when the thermostatically voperated member moved in one direction, and the other projection cooperating with the other trigger to release the same, when 'the ther! mostatically operated member opposite direction.

in testimony that I claim the 'foregoing as my own., li h-ave hereto aidixed my signature in the presence oi two witnesses.

moves in an Witnesses 144A. CornLiiNn, W. H. DALLAS.

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