US216688A - Improvement in combined door spring and check - Google Patents

Description

y R.C..L0VBQ Comb-ined Door Spring and Check. No.216,1688.

Patented Ju'ne 17, 18T-9.

ATTORN EY.

'TNI'TED STATES PATENT OETICE ROBERT O. LOVE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN COMBINED DOOR SPRING AND CHECK.

Specification forming part of Letters Patent No. 216,688, dated June 17, 1879; application lilel December 27, 1878.

To all whom it may concer/n.'

Be it known that I, ROBERT C. LovE, of the city and county ofPhiladelphia and State of Pennsylvania, have invented a new and useful Improvement in Door Spring and Cheek, which improvement is fully set forth in the fol- 'lowing specification and accompanying drawings, in .which- Figure l is a face view of the device embodying my invention. Fig. 2 is a horizontal section in line x x, Fig. 1. Fig. 3 is a section in line y y, Fig. 4. Fig. 4 is a vertical section in line z z, Fig. 1. Fig. 5 is a view of the check-lever and interior of the spring-case. Fig. 6 is a vertical section of the cord-holder. Fig. 7 is a View of one end thereof.

Similar letters -of reference indicate corre sponding parts in the several gures.

My invention consists of mechanism, substantially as hereinafter stated, whereby the door in closing vis temporarily arrested, so as to be prevented from slamming.

It also consists of a lever tted loosely on its post and carrying a catch, which engages with the spring-drum, whereby the lever is y raised.

l It also consists of the covering -frame or shell, provided with an incline for disen gagin g the spring-drum and lever when elevated, and permitting the door to be opened to a great or full extent.,

It also consists of the lever carrying a latch having a stud, which is adapted to engage with a suitable portion of the shell or covering frame or plate for holding the lever in its elevated position, and a head which is adapted to be struck, in order to withdraw the stud and release the lever.

Referring to the drawings, A represents a door, and B the frame thereof. Secured to the outer face of the top piece of the frame is a buffer, C, and to'the inner face thereof a vertically-extending holder, D, for attaching one end of a cord, D', whose other end is adapted to be wound on and unwound from a springdrum, as will be hereinafter more fully explained.

E represents a shell or frame, from the hack plate whereof projects a post, F, on which is loosely fitted a 1ever,G, and a drum, H, to

which drum is connected one end of a spring, a., whose other end is connected to theV post F. A spring, I1, is also connected to the back plate of the shell or post F, so as to bear against the lever Gr and return it to its normal position, which `is horizontal or down,\as

posed that it will 'strike the buffer O and cause the stud e to emerge from the opening e'.

The operation is as follows: When the door is sh ut the lever G is below the top of the doorframe. On opening the door, owing to the cord D' being Xed to the holder D, the drum H is caused to rotate, the spring a to wind,

and the cord to play out or unwind. The

notch d engages with the lower end of the catch J, thus locking the lever G and drum H, and causing said lever to turn in the post F, and thereby rise. When the lever has reached its highest point the stud e drops into the opening e', and serves to hold the lever ele vated and stationary. The catch rides on the inclines E', and is thereby cleared of the notch d, whereby neither the latch nor catch prevents 'the further. rotationof the drum, and.

consequently permits the door to be opened to a great or full extent, as described.

When thedoortis let go in order to be closed, the power of thespring a is exerted to rotate the drum and wind the cord D' thereon, thus drawing in the door. The lever G, remaining locked, reaches the buffer C, and the head K of the latch K strikes against it, thus cheeking the door and preventing slamming, and causing the stud e and back plate of the shell E to disengage, whereby the lever, being no longer controlled, is forced by its spring b to its lowered position, so as to pass under the top piece of the door-frame and permit the full closing of the door with ease.

In order to prevent fracture and strain of the lever G, a stop, a', of rubber or other elastic material, is secured to a proper part of the shell for the lever tostrike against.

To the door-jamb is xed a stop of rubber or other elastic material, L, which has an inclined face, and is tted between dovetailed pieces b b secured to the jamb, whereby the stop is reliably held in position, and its inclined face prevents noise of the shutting door, and. in a measure, wedges against the door to hold the same. n

The cord-holder l) consists of a rotating cylinder held to a fastening-plate, L', by a suitable screw, and having a serrated face, which engages with a serrated face of the fasteningplate.

When the screw is loosened the cylinder may be rotated to the required extent. Then tighten the screw, and the serrations engage, whereby the cylinder is immovable and the cord cannot slip. By this provision of the rotation of the cylinder the length of the cord D may be adjusted or its slack taken up, as required or desired.

Having thus described my invention, what I claim as new, and desire to secure by Let-A ters Patent, is-

-pose set forth. Y Y 4. The combination, with the spring-drum1 Ythe purpose set forth.

3. The lever G, carrying the catch J, in comw bination with the frame E, provided with the incline E', substantially as and for the purand buffer, of the lever G, provided with the latch K, having the head K and stud '6, substantially as and for the purpose set forth.

5. The combination, with the lever G, of the shell having an elastic stop, a', substantially as and for the purpose set forth.

ROBT. C. LOVE.

Witnesses J oHN A. WIEDERSHEIM, H. E'. GARsED.

Images