US625962A

US625962A - Half to charles s

Info

Publication number: US625962A
Authority: US
Publication date: 1899-05-30
Anticipated expiration: 1916-05-30

Description

No. 625,962. Patented May', |899.

v. BEAUREGARD.

D 0 0 R C H E C I( (Application led May 26, 1898.;

2 Sheets-Sheet I.

@No Model.)

@MMW

Patented May 30, |899.

^ BgEAMREaAnn.

M1913; QHiECK.

(,mglicatibna BM May 26, 1898.)

2 Sheets-Sheet 2.

(No Model.)

UNITED STATESL PATENT OFFICE.

VICTOR BEAUREGARD," OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-Y HALF TO CHARLES S. GOYODING, OF SAME PLACE.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent N'. 625,962, dated May 30, 1899.

Application filed May 26, 1898- Serial No. 681,828. (No model.)

To a/ZZ whom, it may concern,.-

Be it known that I, VICTOR BEAUREGARD, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Door-Checks, of which the following is a specification.

This invention is of thel class of checks known as pneumatic, and has for its object to produce a cheap, simple, and durable door-check which may be easily applied to or disconnected from a door and which is not rendered inoperative by the varying conditions to which such devices are subjected in practical use, as fully set forth in the following specification.

The invention consists in a new and improved device for closing and checking the door, consisting of a spring so constructed and arranged as to close the door and also constituting an elem ent of the mechanism whereby the door is checked.

The invention further consists in a flexible connection between the parts thereof which are attached to the door and those which are attached to the casing.

The inventionl still further consists in cerf tain details of construction and combination of parts, as set forth in the following specification and pointed out in the claims thereof. In the drawings similar numerals refer to similar parts throughout the several viewsf Referring to the drawings, Figure 1 is a front elevation of my improved door-check, showing the same applied to a door with the door closed. Fig. 2 is a plan view of the same, the checking-cylinder being shown in section and the door closed. Fig. 3 is a plan view showing the door partly open. Fig. 4. is a plan view showing the check arranged to operate upon the opposite side of the door from that shown in Figs. 1, 2, and 3. Fig. 5 is a plan view of a modified form of check. Fig. 6 is a plan View, partly in section, of another modiflcation of my improved check. Fig. 7 is a section of the checking-cylinder, showing the relative positions of the cylinder, piston, and piston-rod when the door is partly open. Fig. 8 is a section of the checkingcylinder, showing the relative positions of the cylinder, piston, and piston-rod when the door is wide open.

In the drawings, Figs. 1, 2, and 3, a spiral torsional spring 1 is supported in ahollow cylinder 2 on the bracket 3,A attached to the door-casing 4. One end of said spring passes through a hole 5 in the cylinder 2 and is fas tened thereto. The free end 6 of said spring extends outwardly from said bracket 3 and, passing through thehead 7 of the cylinder S, forms a piston-rod, to which a piston 9 is fastened. Y Said piston 9 has a leather packing 10 attached thereto. A tapered split regu-V lating-screw 11 regulates the exit of the air compressed in the cylinder S as the door closes. The head 7 has a stem 12 thereon, which turns freely in a bearing in the bracket 13, said bracket being fastened to the door 11i by screws.

The operation of the device illustrated in Figs. 1, 2, and 3 is as follows: As the door is opened the spring 1 is wound up by the cylinder 8, pivoted to bracket 13 on the door 14 and the free end 6 of said spring, the different parts assuming the positions shown in Fig. 3. As soon as the door is released the spring 1 reacts, closing the door through the medium of the free end 6 of said spring and the cylinder 8. In addition to closing the door the spring 1, through the free end 6, operates the piston 9 in the cylinder 8. When the door is opening, the piston is drawn back in the cylinder S by the spring 1 and the free end 6 thereof from the position shown in Fig. 2 to that shown in Fig. 3. Vhen the door is closing, the spring 1, through the free end 6 thereof, takes the thrust of the door through the compressed air in the cylinder 8 upon the piston 9 and through the free end 6 thereof, thus checking the door. It will be seen, therefore, that the door is closed by the spring 1 and its free end 6 and that said free end of the spring also constitutes an element of the mechanism whereby the door is checked, which construction brings less strain to bear upon the hinges of the door when the checking action takes place. Another and very important advantage derived from the direct connection of the piston to the spring 1 through the piston-rod or free end 6 of said IOO spring is that the connection from the parts upon the door to the parts upon the doorframe is iiexible in a vertical plane, so that in case the door sags upon the hinges or if the check is not set up accurately the spring 1 will move up or down and accommodate itself to the diiterent positions of the cylinder and piston without cramping the different working parts aud causing a friction which would prevent the door from closing. The importance of this feature in a device et the kind described cannot be overestimated, as any 'friction of the working parts necessitates a heavier spring than would otherwise be necessary to close the door, and a heavy spring necessitates a large cylinder, thus rendering the device cumbersome and expensive.

In Fig. @t I have illustrated my invent-ion applied to a door upon the opposite side from that shown in Figs. 1, 2, and 3, the spring 1 and bracket 3 being attached to the door and the cylinder pivoted to a bracket 13, attached to the door-frame. In this arrangement of the device the spring pullslthe door to instead of pushing, as in Fig. 1, 2, and 3; but the operation ot the check is otherwise the same as in the form described above.

In Fig. 5 I have illustrated a modified form of check in which the free end G of the spring 1 is inclosed by a tube or piston-rod 15. Said piston-rod is rigidly att-ached to the free end b', so that the operation ot` the device is precisely the s'ame as that illustrated in Figs. 1, 2, and 3.

In order to place the cylinder S and spring 1 at a-praetical distance from the hinges of the door and to enable the door to be opened at an angle of about one hundred and eighty degrees from its position when closed and to accomplish this result without making the device large and cumbersome, I have provided an extensible or telescopic piston-rod. (Illustrated in Figs. 6, 7, and S.) The free end G of the spring 1 and the tube or piston-rod 15, rigidly fastened thereto, are of substantially the same construction as that shown in Fig. 5; but the tube 15 is not fastened directly to the piston f), but is connected therewith by a tube 1G, which incloses said tube 15 and is joined thereto by a spiral retractile spring 17. The other parts ot the check are substantially t-he same as in the forms previously herein described. of the diterent parts when the door is closed. In Fig. 7 the relative positions of the cylinder, piston, and piston-rod are shown when the dooris opened at an angle of about ninety degrees. \Vhen the dooris opened to a greater angle, the parts assume the position shown in Fig. 8, the tube 1G slidingr upon the tube 15 and stretching the spring 17 according to the angle at which the door is opened. The funetion of the spring 17 is not to close the door, as the spring 1 would close the door if the spring 17 were omitted; but the function of said spring is to govern the position of the tube 15 in the tube 1G, so that when the door In Fig. (i I have shown the position is closing and arrives at about an angle of ninety degrees from its position when closed the tube 15 will be in the position shown in Fig. 7 and the compression of the air will take place from that point to the time when the door is nearly closed. TVithout the spring 17 the

tubes

15 and 16 would be liable to cramp upon each other in the position shown in Fig. 8, and thus the air in the cylinder would be compressed When said door is closing from one hundred and eighty degrees to ninety degrees with the result that the door would not be checked at the proper time, which is just before the door closes. It will thus be seen that from ninety degrees to closing the action of the spring 1 is the same as to closing and checking the door in each of the different forms described.

lIaving thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a pneumatic'check, a cylinder pivotally secured to a door or door-casin g and having a piston therein, in combination with a spiral torsional spring having a free end operatively connected to the piston to form an element of the checking mechanism and its other end adapted to be fastened to a doorcasing or door, substantially as described.

2. In a pneumatic check, acylinderpivoted to a bracket adapted to be attached to a door or door-casing, a piston and piston-rod, in combination with a spiral torsional spring, one end of which is rigidly attached to the piston-rod, the other end adapted to be fastened to a door-casing or door, in such amanner as to form a connection, flexible in a vertical plane, between said door and door-casing, substantially as described for the purpose specified.

3. In a pneumatic door-check, a cylinder pivoted to a bracket, adapted to be attached to a door or door-casing in combination with a piston and telescopic piston-rod, consisting of two tubes, one of saidA tubes fast to the piston, the other rigidly attached to a spiral torsional spring, adapted to be fastened to a doorcasing ordoor, substantially as described, for the purpose specified.

4. In a pneumatic check, a cylinder pivoted to a bracket, adapted to be attached to a door` or door-casing, in combination with a piston and telescopic piston-rod, consisting of two tubes, attached to each other by a spiral spring, one of said tubes fast to the piston, the other rigidly attached to a spiral torsional spring, adapted to he fastened to a door-casing or door, substantially as described for the purpose specified.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

VICTOR BEAUREGARD.

Witnesses:

HERBERT E. NOBLE, E. L. BROWN.

IOO

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