US927443A - Screwless knob. - Google Patents

Description

A. ARBHS. SUBBWLESS KNOB.

APPLIGATIOK FILED SEPT. B, 1908.

Patented July 6, 1909 i i i "4,

W may. @2222,

UNITED STATES PATENT OFFICE.

AUGUST ARENS, OF NEW BRITAIN, CONNECTICUT, ASSIG'NOR TO I. & F. CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATION'OF CONNECTICUT.

SOREWLE SS KNOB Specification of Letters Patent.

Patented July 6, 1909.

Application filed September 8, 1908. Serial No. 451,980.

To all whom it may concern.

Be it known that I, AUGUST ARnNs, a citizen of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Screwloss Knobs, of which the following is a full, clear, and exact description.

My invention relates to door knobs, particularly of the type termed screwlcss knobs.

The object of the invention is to provide a simple, effective and durable construction.

In the main, my invention constitutes an improvement upon the construction made the subject matter of my former patent No. 778,942 of January 3, 1905, the present invention simplifying said construction and reducing the number of parts necessary to the complete article.

Figure 1 is a relatively enlarged longitudinal, sectional view of my improved knob and its associated parts, the knob proper being upon the spindle but not connected. In this View, certain of the parts are shown in elevation. Fig. 2 is an end elevation of one of the details detached. Fig. 3 is an end elevation of another of the details detached.

1 represents a knob spindle of the usual cross-sectional outline and screw threaded at its corners.

2 represents an escutcheon plate designed to be carried by a door.

3 represents the grip portion of a knob.

4 represents what I may termthe clamping member or sleeve, the same constituting the knob shank when the parts are assembled.

5 represents an adjusting member having an annular shoulder 6 arranged about midway of its length.

77 are slots cut into the outer end of the adjusting member 5. By preference, four of these slots are provided.

The knob 3 is rovided with an angular spindle passage w ereby, when the knob is upon the spindle 1, it is held from turnin a though it may slide thereon. This spind e passage is eounterbored, so that the inner end of the knob will slide over the slotted outer end of the adjusting member 5 when the pints are in position or in the act of assem- 8 is a key or s line adjacent to the wall of the counterbore portion of the knob 3 and arranged to slide into any one of the slots 7 as the parts are being assembled. This spline may be economically formed by means of a pin as shown in Fig. 1, the same being held rigidly in a hole bored in the knob at the rear of the counterbore.

9 is an external thread at the inner end of the knob arranged to receive the internally threaded part of the clam ing sleeve 4.

Having thus identified the various parts of my invention, the same would be assembled as iollows:The s indie 1 which carries the usual knob (not s iownl at one end. is slid through the door and through the escutchoon 2, as shown in Fig. 1. The clamping sleeve 1 is then put into place, the same taking a suit able bearing within the escutchcon The adjusting member 5 is then screwed onto the shank until the annular shoulder 6 takes up against the shoulder within the clamping sleeve 4, the turning in of said adjusting member being continued until the said sleeve 4 bears properly against the rose or escutchcon 2. This adjustment should not be so tight as to revent free turning and yet should be suin-iently snug to prevent loosenose or rattling. The adjusting sleeve is now so disposed upon the spindle 1 that when the knob 3 is placed thereon, the s )line 8 will line up with one of the slots 7. It hen the knob is placed upon the spindle 1, it is pushed forward until said spline enters one of said slots and until the threaded portion 9 of the knob enters the internally threaded portion of the sleeve 4. The operator then turns the sleeve 4 in a direction to draw the knob into its final osition in which position it will be frictiona 1y held against displacement. Inasmuch as the spline 8 stands in one of the slots 7 in the adjusting device, and inasmuch as the knob 3 cannot turn on the spindle 1, it follows that the adjusting sleeve 5 will not be turned with the clam )ing sleeve 4 as the same is being rotated. here, formerly, as set forth in my earlier patent above referred to, it required a separate locking washer to revent the adjusting member from turning, y my present improvement I have eliminated this element, the knob itself serving to lock the adjusting sleeve against rotation when the parts are being drawn together or moved apart by the proper rotation of the clamping sleeve 4.

What I claim is 1. In a device of the character described, a knob, a rotatable internally shouldered clamping sleeve constructed to be screwed on to said knob, a spindle, an adjusting device screw-threaded thereon, said adjusting device having an external shoulder inter1nediate its length arranged to engage the internal shoulder of the clamping sleeve, and a recess in the outer end thereof, a knob slidable but not rotatable on said spindle and having a recess at its inner end to receive the outer end of said adjusting device, and a key on said knob within said recess and arranged to engage said adjusti-n device to prevent the rotation thereof Whi-e said parts are being connected or disconnected.

2. In a device of the character described, a knob, a rotatable internally shouldered clamping sleeve constructed to be screwed on to said knob, a spindle, an adjusting device screw-threaded thereon, said adjusting device having an external annular shoulder intermediate its length arranged to engage the internal shoulder of the clamping sleeve, and a plurality of recesses in the outer end thereof, a knob slidable but not rotatable on said spindle and having a recess at its inner end to receive the outer end of said adjusting device, and a key on said knob Within said recess and arranged to engage the recessed portlon of said adjusting device to prevent the rotation of the latter duning the attachment -or detachment of the knob.

AUGUST ARENS.

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