US594727A - William cooper - Google Patents

Description

(No Model.)

W. COOPER.

VBNTILATOR FOR BUILDINGS.

Patented NOV. 30, 1897.

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UNITED STAT-Es* PATENT"- wrLLIAM coornn, on FARNwonTr-I, ENGLAND.

VENTILATORFOR BUILDINGS.

SPECIFICATION forming part of LettersPatent No. 594,727, dated November 30, 1897. Application filed December 28,1896. Serial No. 617,225. (No model.) Patented in England July 22, 1893,1lo.14,192.

` the following is a full and exact description thereof.

The nature of my invention consists in fitting two or more hinged or pivoted iiaps coupled together by levers, rods, or other equivalents, so that their action will be synchronal. The flaps are so proportioned and arranged as to be almost balanced, by which their toand-fro actions will be effected with the least possible current of air. The flaps may be of equal or unequal sizes, the movements being effected by means of levers and rods of suitable proportions. The whole arrangement may be mounted in a frame or otherwise, as required; and in order. that my said. invention may be particularly described and ascertained reference is hereby made to the accompanying drawings, in which similar figures of reference indicate corresponding parts.

Figure 1 is a sectional elevation illustrating one means of carrying out my invention, showing the flaps closed. Fig. 2 is a sectional elevation of the arrangement shown in Fig. 1, showing the flaps open. Figs. 3 and 4 illustrate another form of carrying out myinvention, Fig. 3 showing the flaps closed and Fig. 4 showing them open. Figs. 5 and 6 illustrate another modification.

Referring to Figs. 1 and 2, 5 is the upper flap, hinged at 6, and 7 is thelower iap,hinged at 3. 9 is a bracket or arm rigidly iiXed to the tiap 7. l0 is a connecting-rod one end of which is pivoted to 5 at 11, the other end being pivoted to the bracket-arm 9 at 12. The positions of J[he pivoted centers 1l 12 and the curves traversed thereby relatively to each other and to the centers Gand 8 are such that the two naps 5 and 7 very nearly balance each other, so that even a weak current of air in the direction of the arrow 13 will instantly close the flaps, as shown in Fig. l, and a similar current of air in the direction of the arrow 14 will instantly openthe flaps, as shown in Fig. 2.

Referring to Figs. 3 and 4,the position of the connections is shown reversed, the bracket 9 is rigidly fixed to the upper flap 5, and acurved connecting-rod 10 is pivoted to the flap 7 and arm 9, as shown. The effect of this arrangement is exactly similar to that shown by Figs. 1 and 2, the iiaps very nearly balancing each other.` 15 is a transverse bar fitted with an elastic facing 1G, against which the turned edges 17 of the flaps impinge and render the joint airtight when the iiaps are closed. These turned edges and elastic facings are also provided at the sides for the same purpose.

By slight alterations of the centers upon which the several elements forming the kinematic chain revolve the flaps maybe arranged so as only to partly close to a certain set open position. Thus if the center S is shifted to the point 18 or between 8 and 18 the fiaps will not entirely close the passage, but will remain partly open.

Referring to Figs. 5 and 6, 19 is a fixed guide-rod,which serves as a guide to the slideblock 20. This slide-block carries the pivoted ends of two connecting-rods 21 22, the other ends of the'rods being pivoted to the flaps 5 and 7, whereby the angularmotions of the flaps are rendered synchronal. The rod 19 may be screw-threaded to receive a screw-nut, or it may be a ratchet-bar to receive a pawl, or a bar formed with pin-holes for the purpose of setting open the flaps, if required. It is evident that the pivotal points or distances between the same can be changed or varied.

Having now particularly described and ascertained the natu re of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. The combination with an air or ventilating shaft or passage-way, of a draft-regulator comprising,oppositely-arranged flaps, and a jointed connection between the flaps.

2. The combination with a ventilatin g-shaf t or passage-way, of a draft-regulator comprising oppositely-arran'ged flaps, and a pivoted and jointed link connection between the iiaps.

' 3. An automatic draft-regulator for ventilators, comprising oppositely-swinging flaps or doors, and a jointed balancing connection between the iiaps or doors.

IOO

4. A draft-regulator for ventilators, comprisin g oppositely-swingin g iaps or doors,and a connection between the flaps consisting of arms one of which is iiXedly secured to one door, and the other pivotally secured to the other door, one of said arms beinglon ger than the other, and a pivotal connection between the arms.

5. An automatic draft-regulator for Ventilators consisting of oppositely-swingin g aps or doors, a fixed arm on one flap, and a connection between the arm and opposite iap.

G. An automatic draft-regulator for ventilators, consisting of hinged flaps oppositely arranged, and means for uniting and balancing the flaps comprising arms and a joint connection between the arms, substantially as described.

7. An automatic draft-regulator for Ventilators, consisting of oppositely-swinging pivotal flaps, and an eccentrically-jointed bar connection between the flaps.

8. Ail automatic draft-equalizer, comprising oppositely-swinging iiaps, of means for connecting and balancing the flaps, and adj ustable means for Varyin g the movement of the flaps to permit the same to either partially or fully close the Ventilating-opening.

9. An automatic draft-equalizer for Ventilators, consisting of oppositely-arranged flaps or doors suitably hinged to move in opposite directions, a jointed connection between the flaps, and means for adjusting the hinged connection of one of the iiaps.

In testimony whereof I ai'iiX my signature in presence of two witnesses.

VVILLIAIWI COOPER. IVitn esses ARTHUR C. HALL, JOHN WV. THOMAS.

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