US293326A - of quebec - Google Patents

Description

(No Model.)

- W. A.` HOLWELL. 'DOOR-CLOSING pEvIGB.

No. 293,326. PatentedrebQ 12, 1,884.'

INVENTOR Y Att-army A WITNESSES @l/C i UNUSED STATES w. Anrnonns HoLwELL, or QUEBEC, QUnBnc, CANADA.,

.DOOR-CLOSING DEVICE.

'sPiicIi-"IcAfrroN farming part of Letters Patent No. 293,326, dated February 12, 1884. Y' 4"Appiimtionfiicaocfntersr,ieee. (sommier) V To. all whom it riz/ray; concern:

Be it known that I, W. ANTRoUs HOL- l WELL, a subject of Great Britain, residing at Quebec, in the county of Quebec and ro'vince of Quebec, Canada, have` invented a new and useful Automatic Door-Closer, of which the following is a specification, reference being A.hadrto the accompanying drawings.

` siveness, and general efficiency.

` is open.

the several figures.

- In the accompanying drawings, Fi gurel represents the position ofthe devices when the door is closed. Fig. 2 is a similar view, showing the position of the devices when the door Fig. 3 is a view illustrating various modifications in the construction.

Like letters refer to corresponding parts in Referring to the drawings, A designates an upright bar or shaft, fitted at its upper end in an opening,'a, of a block or plate, Bthe plate being secured to the wall, partition, or other convenient support in any suitable manner. The lower end of the bar or shaft A may be connected to the wall, iioor, or partition in `any suitable nianner, and the entire shaft attached the cord or chain D, which passes through a pulley, E, journaled in a frame, d,

- the stein e of said pulley-franie extending into a circular opening, j', ofthe block or plate B. After leaving the pulley E, the cord or chain extends over additional pulleys, as desired, to the door, where it is secured in any suitable manner.

`F is a lever, having a long arm, g, and a short arm, h, and pivoted at t to an'extension, G, of the carrier in such manner as to admit of said lever lying either parallel along the side or edge of the shaft A or horizontally and at right angles thereto, or in any intermediate position. The short arm of the lever is provided at the outer end with a roller,.H, while to the longer arm of the lever is suspended a weight, I, from a hook, J, which is pivoted to a sleeve, K, held on the arm g of the lever F in any desired position, by means of a binding screw, L.' With this construction the Weight may be adj ustedlto any position along the long arm of the lever which will prove most effective in operation. Vhen the door is open, as shown in Fig. 2, the roller H remains and bears upon the outer edge ofthe shaft A, and thereby keeps' the lever in its perpendicular position; but upon the closing of the door, when the carrier reaches sufficiently near to that part of the shaft which is provided with a beveled or chainfered recess, m, the roller H and the short arm h of the lever toV which it is attached are forced gradually, by the weight on the longer arm of the lever, into the recess m, iintilby the continued lowering of the carrier the` lever assumes the horizontal position shown in Fig. l.

The devices being adjusted as shown in the drawings, the operation of my invention may be explained as' follows: When the door is closed, the extension of the cord or chain D allows the carrier C to descend along the shaft until the roller H gradually recedes into the recess m 'of said shaft, thereby permitting the longer arm'of the lever tofall into a position at right angles to the shaft A, as shown in Fig.

1. In this position the movable weight l, at-

door, this increased strain uponf the cord D has to be rst overcome; but upon the further opening of the door the carrier C is drawn upward, carrying with it the lever F, until the roller H at Athe extremity of short arm h of said lever having passed along the chamfered or beveled recess m of the shaft A, the lever is forced into the position shown in Fig. 2.- In this position the increased strain' upon the cord, as hereinbefore referred to, is removed, and the deadweight only of the combined apparatus has to be raised.

In Fig. 3 I have illustrated several modifications of the constructions shown in the other figures, but the operation of the devices is not changed. I have first shown asimple method of attaching the shaft A to any wall, partition, or other support, bo'th at the upper and lower ends of said shaft, and also another plan of attaching the pulley E to receive the cord or chain D, the pulley being attached to the shaft. The attachment of the weight, as shown in Figs. 1 and 2, is found somewhat objectionable, for the reason that the lateral strain upon that portion of the carrier which is between the two upper rollers, (back and front,) occasioned by the weight lying outside of the perpendicular-line of suspension when the lever is parallel with the shaft, has been found to slightly detract from the successful and easy operation of the devices, and for the purpose of remedying this defect I have devised a superior plan of suspending the weight, which is shown in Fig. 3. This improvement or modification consists in providing the long arm g of the lever with a sliding frame, .'I, having a binding-screw, t, said frame being provided with pins or pivots u, one on each side, on which two arms, U, are to be hung, such arms being long enough to reach down clear of the roller H, and at their lower ends to be connected with the weight I, which would thus always swing clear of the lever.

Another simple manner of connecting the Weight with the lever might be to have the weight cast with a slot to receive the lever, on which it would be secured in the desired position by a binding-screw.

Other inodications and arrangements of the parts may be resorted to without departing from the spirit or scope of my invention.

The operation of the devices is eifective and easy, the construction is'simple, durable, and inexpensive, and the advantages derived from the use of the same will more than repay the slight trouble in its application for use.

It will be apparent that my devices can be applied to gates, for the purpose of closing the same; and I therefore do not confine the use of my invention to doors alone. 4

Having described my invention, I claima's new and desire to secure by Letters Patentl1. In a device for closing doors, Ste., a suitably-supported shaft or bar, in combination with a carrier traveling on said shaft and con-- necting with the door, and a weighted lever pivoted to said carrier, as and for the purposes set'forth.

2.- In a device forclosin'g doors, &c., a suitably-supported bar or shaft, provided with a beveled or chamfered recess, m, in combination with a carrier traveling lon said shaft and connecting with the door, and a weighted lever pivoted to said carrier and provided with a roller, H, as and for the purposes set forth.

3. In a device for closing doors, 85e., a suit-v ably-supported bar or shaft provided with a beveled or chamfered recess, m, in combination with a carrier traveling on said shaft, and provided with rollers b, a cord or chain connecting said carrier to the door, a lever pivoted to the carrier and provided at one end with a roller, H, and an adjustable Weight, as and for the purposes set forth.

4. In a device for closing doors, Ste., a bar or shaft iitted at its upper end in a block, B, and provided with a beveled or chamfered recess, m, in combination with a carrier encompassing and traveling on said shaft, a cord connected to the carrier and leading through requisite pulleys to the door, a lever pivoted to the extension G of the carrier and provided at one end with a roller, H, and an adjustable weight connected to the lever, as and for the purpose set forth.

5. In a device for closing doors, Snc., asuitably-supported bar or shaft, in combination with a carrier traveling on the same and connecting with the door, a lever pivoted at 1l to the carrier, a sliding sleeve arranged to be adjusted on said lever by means of suitable binding-screws, and a weight connected to the sleeve, as and for the purpose set forth.

In testimony that I claim the foregoing as my own Ihave hereto affixed my signature in presence of two Witnesses.

W. ANTROBUS HOLXVELL.

litnesses:

JAMES MARRIEDER, W. NOBLE CAMPBELL.

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