US490990A

US490990A - Charles scrivetst

Info

Publication number: US490990A
Authority: US
Publication date: 1893-01-31
Anticipated expiration: 1910-01-31

Description

(No Model.)

O. SORIVENl Doon CLOSING DEVICE.

No. 490,990. Y Patented Jan. 31, 1893.

Y h Tromvgm THE mams PETERS co. PHoTuLlmo., wAsHmcroN, D c

UNITED STATES PATENT OFFICE.

CHARLES SCRIVEN, OF LEEDS, ENGLAND.

Doon-CLOSING DEVICE.

SPECIFICATION forming part of Letters Patent No..490,990, dated January 351, 189,3. Application tiled August 18, 1892. Serial No. 443.386. (No model.) Patented in England August 21, 1891, No. 14,157-

.Zo all whom it may concern:

Be it known that I, CHARLES SCRIVEN, a subject of the Queen of Great Britain and Ireland, and a resident of Leeds, county of York, England, have invented certain Improvements in Door-Closing Devices, (which were patented in Great Britain August 21,1891, No. 14,152) of which the following is a speciication.

My invention consists in certain improvements in the construction of devices for closing doors and for holding them open in predetermined positions, and in carrying out my invention I employ elastic material such as india rubber, caoutchouc dto., (hereinafter referred to by the more general term india rubber) as the spring, which is arranged as an axial connection between two parts turning one upon the other and acts by torsion.

In the accompanying drawings,Figure 1 is an elevation partly in section of part of a door frame or casing and door provided with one form of my improvement; Fig. 2 is' a corresponding view of a modification; Fig. 3 isa plan view of the construction shown in Fig. 2; Figs. 4 and 5 are plan views of other modifications; Figs. 6 and 7V are views of another construction of my invention, and Figs. 8, 9 and l0 are views of still another modification.

Referring to the construction illustrated in Fig. l, cl, is the door frame or casing, h the door, c a bracket or part attached to the casing ct; d an arm or lever pivoted to the bracket.

It is provided with a double or forked end d2 for taking upon or spanning the brack'etc, and turning thereon by the movement of the door. Both the bracket c, and the arm d, are

Yperforated axially, (by preference with rectangular openings) to receive a piece of india rubber e, which at its center is xed in the said bracket c, and engages with the ends cl2 d2, the arrangement being such as to allow of two twists, vim-one at each end of the central fixed part of the india-rubber, thus accumulating sufficient energy for closing a somewhat heavy door. Each side of the bracket c, is enlarged or recessed in its interior to give room for the enlargement of the india-rubber during twisting, as the door to which it is attached is opened. A stud f, which is fixed to the other end of the arm or lever d`,takes into vthe arm orlever d.. vare provided with corresponding axial perter as to allow the door to be readily closed again by pulling or pushing the door.

In the construction shown in Fig. 2 the india rubber is arranged to have but one twist given to it, and the door can be held open in predetermined positions.

As shown in the plan View Fig. 8, the door is arranged to open both Ways. As in the construction already described, there is a bracket c attached to the door frame or casing. This bracket is provided with a bearing c in which is fitted to turn freely a tubular boss d on This boss and the bracket forations for receiving the india rubber torsion spring e to the opposite ends of which these parts are connected. A stud fon the lever d is adapted lto work in a slot ff in a plate g which is provided with notches g and g2 for the reception of the stud f to hold the door in the wide open position either Way, as indicated by dotted lines in Fig. 3.

In t-he construction shown in Figs. 4t and 5, the door is arranged to open in one direction only, the closing device being shown in one case as adapted for use on oneside of the door and in the other case for use on the other side of the door, as will be readily understood. As shown in Figs. t and 5, these constructions require each only one notch g2 in the slotted plate g to provide for holding the door in the full open position, as indicated by dotted lines.

The construction illustrated in lFigs and 7, has been devised in order that it may be applied to a door hung either on the right or left hand, and also to provide for giving additional twist to the rubber torsion spring if required. y There is as before, a bracket c to be attached to the door frame or casing and this is provided with a cylindrical bearing c through it. Into one end of this bearing there is fitted to turn freely the tubular boss d' of the arm o'r lever d. At the other end of the bearing-c there is fitted a cap m provided with a IOS) series of holes o and capable of being turned in the bracket for adjustment. The india rubber torsion spring e is fixed at one end to the lever cl and at the other end to the cap m. When the lever CZ is brought into the required position with the studftaking into the slot of the plate g, a pin p (Fig. 7) is put through one of the small holes and into a corresponding hole in the bracket c, to prevent the cap m from turning on its axis. By this means it will readily be seen that this device can be applied either to a right or lefthand door and any desired tension given to the spring, by adjusting the cap m.

In the construction illustrated in Figs. 8, 9 and l0, I have shown myinvention as applied to'a swing door, that is, one which opens in both directions. The bracket c in this case is recessed into the head of the door fratrie and is provided with projectingbranches having notches or recesses c2,threein thepresent instance. The lever or arm d in this case is secured to the top edge of the door and its boss dis fit-ted to turn in the bracket or bearing c so that these two together form the upper axis or pivot upon which the door turns. The bracket or part c and the arm or level' d are provided with corresponding openings for the reception and securing ot` the opposite ends of the rubber torsion spring e, as in the construction shown in Fig. 2. The boss cZis, as before, recessed or .enlarged interiorly to allow room for the twist of the rubber when the door is swung in either direction. The arm CZ is provided with a spring latch h to take into any one of the recesses 02,6202 for holding the door when it is either in the closed position or open in either direction.

I claim as my invention:

l. The herein described device for closing doors, comprising a bracket and a lever pivoted thereto, one of these parts being adapted to be connected to the door and the other to the door frame, with a torsion spring of rubber or similar elastic material forming an axial connection between the lever and bracket, substantially as described.

2. The herein described device for closing doors, comprising a bracket and a lever pivoted to the bracket, one of these parts being adapted to be connected with the door and the other to the door frame, in combination with a torsion spring of rubber or similar In testimonywhereor" I have signed mynameto this specification in the presence of two subscribing Witnesses.

CHARLES SCRIVEN. Witnesses: x

ALL JOUING, Sr., CHAs. GILLIARD.