US1090616A - Door-knob. - Google Patents

Description

R. GRIESER.

I DOOR KNOB. AIPLIGATION FILED MAY 29,1913.

1,090,616, Patented Mar17,1914.

Wu/"mo I I 5 woe wto c COLUMBIA PLANOGRAPH CO-.WASHINOTON. D c.

UNTTED snares Parana orrrcn RICHARD G-RIESER, OF NEW YORK, N. Y.

DOOR-KNOB.

readers.

To all whom it may concern c it known that l, RICHARD Gnrnsnn, a citizen of the United States, residing at the city of New York, borough of Brooklyn, and State of New fork, have invented certain new and useful Improvements in Door- Knobs, of which the following is a full, clear, and exact description.

This invention relates to door-knobs or handles and more particularly to the type consisting of a two-part filled metallic shell.

The principal object of my invention is to provide a knob of this character in which the danger of the shell collapsing or the parts becoming loose will be eliminated.

With this 'and other objects in view, my invention consists of a knob having an improved form of support between the port-ions of the filler, which support maintains the portions of the filler in firm engagement with the walls of the shell and in fixed relation to each other.

In the drawings, Figure l is a central longitudinal section of my improved knob; Fig. 2 is a detail view of the support; and Fig. 3 is a front elevation of a modified form of knob.

The door-knob comprises a two-part shell consisting of sections 1 and 2, the section "1 being provided with a hub portion 3 shaped similarly to a truncated cone and converging toward its outer end. A substantially semispherical shell 4 is attached to the inner end of the hub 3 and is preferably formed integral therewith by shaping the section out of a single piece of metal. The shell 4 has a raised annular flange or head 5 formed on its periphery. A cap-like semi-spherical shell 6 has a corresponding raised flange or bead 7 which fits over the bead 5 forming a tight joint which will firmly secure the shell-like parts of the knob together. The sections 1 and 2 are individually partially filled with a suitable filler designated 8 and 9, respectively, which filler may be any plastic composition which will harden upon drying or cooling. The surface of the filler in each of the sections of the shell is substantially on a line with the line of jointure of the bead and the peripheral surface of each section of the shell, so that a sufiicient space is left around the joint to permit the beads to properly interlock.

The knob thus far described hasbeen used and has the distinct advantage where ornamented knobs are desired, that the joint oc- Specification of Letters Patent. Application filed May 29, 1913.

Patented Mar. 17, 1914. Serial No. 770,584.

curs in the plane of the maximum diameter of the spherical or globular shaped shell which permits each part to be formed and embossed with any suitable design by the use of the ordinary form of stamping die. as is shown, for instance, in Fig. 3. I

Attempts have been made to manufacture door-knobs of this type, but heretofore it has been unsuccessful, due to the difficulty of properly filling the sl leave a space in the zone of the joint to If this space is not afterward filled, it is apparent that the jar occasioned by t e slamming of the door or the striking of the knob with a heavy object, will loosen the filler, and if the blow is sufficiently heavy, will collapse the shell and the joint will become loose. It has been found necessary to rigidly support the portions of the filler with respect to each other to make this form of knob practicable, and sand has been introduced between the parts but this is impracticable owing to the difficulty of gaging the proper amount in the shell, which necessitates, in frequent instances, the takmg apart of the knob after it has been asled, either to remove or to add more sand.

The important feature of my invention is to provide a support which maintains the sections of the filler properly spaced apart and which is readily positioned.

Referring now to Fig. 2, wherein is shown my nnproved form of support which conslsts of a circular metal disk or washer 11 provided with a square hole 12 at its center. Th s disk or washer is divided into a plurality of sectors by radial slits running approximately half the length of the radius of site direction, the remaining sectors 15 remaining in their original position. This washer or disk is positioned in the space surrounding the joint on the surface of one of the sections of the filler, the outer edges of the unbent sectors engaging the walls of the shell 4. The sectors 13 are firmly embedded in the filler 8 which will firmly anchor the-disk in place. The other set of sectors 14 bridges the intervening space between the sections 8 and 9 of the filler and are firmly embedded in the and preferably lies fiat filler 9, which will firmly hold the sections an important consideration in manufacturing a large output'of articles of this type.

The knob is provided with a square sleeve 16 into which the knob-spindle (not shown) is adapted to fit. This sleeve passes through the square hole 12 in the support 11 and is supported at its outer end by a disk or washer 17 which has a force fit with the converging walls of the hub 3 and is provided with a square hole through which the sleeve 16 passes, which is thus centrally positioned with respect to the knob. A cap 18 fits into the end of the bore of the sleeve 16 and is held in place by a protuberance 19 formed by indenting the Wall of the sleeve.

The method of assembling is obvious. The sleeve is positioned in the hub member 2 and the section filled with a suitable plastic composition or filler 8 and the section 6 of the shell with a filler 9. The support 11 is then positioned on the surface of the filler 8 while the composition is still soft, the sectors 13 being forced into the filler and becoming firmly embedded therein. The two parts of the shell are assembled before the composition hardens, the sectors 14; forc- Copiez of this patent may be obtained for five cents each, by addressing the ing their way into and becoming firmly embedded in the filler 8, and the cap 18 preventing any of the material from entering the bore of the sleeve. 1

Having thus described my invention, 1 claim 1. A door-knob comprising a jointed two part shell each part containing an independent solid filler and an independent rigid spacer interposed between the fillers and anchored to both of them. V

2. A door-knob comprising a two-part shell having a joint, a two-part filler in said shell, the parts of said filler being separated at the zone of the joint, and a single support between the parts of the filler having portions embedded in the respective parts thereof.

3. A door-knob comprising a two-part shell having a joint, a two-part parts of said filler being separated at the zone of the joint, a sleeve in said knob, a support between the parts of the fillerhaving an opening therein through which said sleeve passes for centrally positioning said sleeve in said knob, said support having sector-like portions embedded in the respective parts of said filler. i

In witness whereof I subscribe my sig nature, in'the presence of two witnesses.

- RICHARD GRIESER. Vitnesses:

VALDO M. GHAPIN, J ULE ZELENKO.

Commissioner of Patents,

Washington, I). 0.

filler, the

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