US 973680 A
Description (OCR text may contain errors)
P. MJA'R SGH, COMBINED HINGBAND DOOR GHBOK.
APPLIQATION FILED NOV. 9, 190a.
Patented 0013. 25, 1910 CQPY V UNITED sTA ps; Parana OFFICE.
PAUL MARKSCH, 0F VOI-IWINKEL, GERMANY, ASSIGNOR TO THE FIRM 05 W. & G.
V VOGEL, OF ELIB'EEFEEZD, GERMANY.
commni n amen AND noonfcnncir.
Specification of Letters Patent.
To all whom it may cmcc'rn:
subject of the German Emperor, residing at Vohwmkel, Germany have invented new and useful Improiements 1n Combined.
Hinges and Door-Checks, of which the following is a specification.
This invention relates to a combined hinge and door-check specially designed to be used with doors which open in both directions, the device being constructed so that the door is continuoilsly supported by one of the checking-cylinders. p
.In the accompanying drawings the improved combined hinge and door-check is shown by Way of example.
Figure l is a ground planof the device.
Fig. 2 is a rear view of the opened door; Fig. 3 is'a front view of the door post, the door-being. in open position. ,Fig. 4 is a vertical section representing the checking cylinder on a-larger scale.
As shown in Fig. 1, there are two checking cylinders a, a fixed to the door-post as so that one is at the right hand side and the other at the left hand side of the door post. To the back of the door-leaf y there are fixed two depending'arms 79, ;0 which form part of a plate 1' secured to the rear face of the door, said depending arms engaging respectively with a hollow pintle d of the corresponding checking cylinder aor a, when the door is closed.
The checking cylinders perform the double function of the fixed members of a double acting hinge and of liquid chambers: they are constructed as follows: in the upper end of the checking cylinders a or a,
which are both of thesame construction, a hollow pintle (l is mounted so that it can turn in said cylinder but not displace itself in vertical direction. The hollow pintle (Z is maintained in its position by-means of a clamping ring 6 which has pins j which engage with horizontal slots of the cylinder.
The upper end of the hollow pintle d is closed and flanged so that its flange rests upon the upper edge. of the cylinder 0:. A groove 0, .or 0', is arranged in the upper flanged part of the hollow pintle d which serves for the receptionfof' the depending arm p .or p.j.The hollow pintle (i has a central boring in its lower part which is threaded at high pitch and receives the correspondingly threaded rod 0 of piston Z1.
I Said piston 32 is guided with a feather in a Be. it known that 1, PAUL Miinnsorr, a
which fills the cylinder above the piston i);
A channel 9', arranged in the wall of the cylinder serves for filling the checking-V liquid into the cylinder; said channel terminates at its lower end below the .piston 12 and it has a branch channel. g which terminates in the boring of the cylinder above said piston. The upper end of the channel 9 is closed by means of a pin it whose upper, threaded and c' is screwed into the threaded enlarged upper end of said channel. The end of pink reaches down close to the branch channel g so that t-he orifice of this branch channel can be more or less obstructed by said pin. The lower free end of the depending arms 7), p is flattened.
The device operates as follows :The cylinder between the upper surface of the checking liquid is filled into the cylinder a through the channel 9 after the pin h has been removed, so that it fills the part of the piston and the lower surface of hollow pintle a The pin isscrewed in and the device iseready for operation. Normally both de pending arms p, p engage with the corre-' sponding grooves 0, 0 of the hollows (Z. of
the checking cylinders a, a. If now' the door'is opened the depending arm p or p' which 1s situated in the direction in which the door is being opened remains in engagementwith its hollow pintle, the other arm sliding out of the groove of its hollow pintle. The depending arm which remains in engagement with the groove of the corresponding hollow pintle causes said hollow pintle to revolve whereby the piston b of the corresponding cylinder, mounts rapidly Patented Oct. 25, 1910.
owing to the high pitch of the thread. The
checking liquid flows through the non return valve m from the upper to the lower side of the piston. The door is rotatably supported on said hollow pintles of the checking cylinders which serve as a double acting hinge. When the door is being closed automatically by any of the numerous well known devices for the automatical closing of doors, the liquid which has collected under the piston checks the movement of the door being slowly forced by the descending piston through the channel 9 and branch g back into the upper part of the cylinder. The speed at which the checking liqrid flows back can be easily rc ulated by means of pin h.
1 claim 2- In a combined hinge and. door check the combination with the door and door frame, of a plate secured to the rear edge of the door and having depending arms at its opposite ends,'t-wo checking cylinders secured, respectively, to the opposite sides of the door frame each provided with a vertical channel in its wall, terminating at its lower end just above the bottom of the cylinder said cylinder provided midway its length with a port communicating with said channel, means including a screw valve for closing said vertical channel, a hollow plntle having high pltched screw threads rotatably emcee mounted in each of said cylinders and having also a groove in its head to receive the corresponding depending z-zrms of said fixed plate, means including a clamping ring, to prevent vertical movement of said pint-1e,
a pistonseated in the respective cylinders