US 2116707 A
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Description (OCR text may contain errors)
May 10, 1938. M. H. MORRELL. 2,116,707
SCREWLESS DOORKNOB Fil ed April 2'7, 1957 I 2 Sheets-Sheet l lnvenfor M. H. Mor relz A- V gmwmm. M 5m Patented May 10, 1938 UNITED STATES PATENT OFFICE 1 Claim.
The object of my invention is to make a doorknob which cannot be jerked apart or disassembled, while in use. It is a further objective of my invention to make a knob, which can be locked in position without the use of a screw, and that will remain firmly locked, when in use.
It is still a further objective of my invention to make a doorknob which cannot be disassembled from the outer side of the door.
The above and various other objects and advantages of this invention will in part be described and in part be understood from the following detailed description of the preferred embodiment, the same being illustrated in the accompanying drawings wherein:-
Figure 1 is a view of the spindle with the knobs attached thereto.
Figure 2 is an edge view of the spindle.
Figure 3 is a view looking toward the inner end of that knob which is permanently connected with the spindle, with the spindle attached to said knob.
Figure 4 is a view looking toward the inner end of the opposite knob.
Figure 5 is a sectional view taken on the line 5-5 of Figure 1.
Figure 6 is a sectional view taken on the line 6-6 of Figure 1.
Figure '7 is a perspective view of the locking plate.
Figure 8 is a perspective view of the key or block.
Similar numerals refer to throughout the several views.
In these drawings the spindle is shown at 5 and said spindle has a hole adjacent one end through which passes the pin 6, after a sleeve 4 has been placed on said end of the spindle, the said sleeve also having a hole therein through which the pin 6 passes. The knob 2, of porcelain or the like, is then molded over the said end of the spindle, the outer end of the sleeve 4 and the pin so that the knob 2 and the sleeve 4 are permanently connected with said end of the spindle.
A second sleeve 3 has a hole in its outer end for receiving a pin 6 and the knob l is molded over the outer end of the sleeve 3 and over the pin, as shown in Figure 5. The other end of the spindle 5 fits in a socket l2 of the sleeve 3 and intermediate this end of the spindle a slot 1 is formed in each one of three edges of the spindle, the slots being out of alignment as shown in Figure 2. The slot 1 shown in the upper edge of the spindle in Figure 2 is in an intermediate position with similar parts another slot on the forward edge of the spindle of Figure 2 placed farthest from the left hand end of the spindle and with a third slot 1 in that side edge of the spindle of Figure 2 opposite the edge in view, is closest to said left hand end of the 5 spindle. The spindle is placed in the socket I2 of the sleeve 3 in a position to have one of the slots 1 in alignment with a hole II) in the sleeve 3 so that a rectangular-shaped block or key 8 can be passed into the hole In to engage the slot. 10 By having the three slots the knob l and sleeve 3 can be adjusted on the spindle to suit different thicknesses of doors on which the knob assembly is used. A recess H is formed in the sleeve 3 at the outer end of the hole In and is of larger 15 area than the hole. The recess is formed with undercut end walls and a locking plate 9 is adapted to be placed in the recess to hold the key or block 8 in position. This plate 9 is of spring metal and of substantially oval shape with round- 20 ed ends to engage the undercut end walls of the recess and at one side it is formed with a concavity l3 for receiving a point of an ice pick or other tool which is passed under the plate so as to bend the same to permit the ends of the plate to enter the undercut end walls of the recess. In placing the plate in position one end of the plate is placed in one undercut end wall and the ice pick is placed partly under the central part of the plate and then the plate is bent over the ice pick so that its 30 other end can be pushed under the undercut wall at the other end of the recess. Then when the ice pick is withdrawn the plate will straighten out so that its ends will firmly engage the undercut end walls of the recess. As before stated this will 35 lock the key 8 in position and thus firmly fasten the knob I and its sleeve 3 to the spindle. When it is desired to remove the knob assembly an ice pick or the like is forced under the plate at the recess I3 so as to bend the same upwardly and 40 thus remove it out of the recess and then the key 8 can be removed in any suitable manner, such as by turning the knob assembly to place the hole In in which the key is located in a position at the underside of the sleeve so that the key will drop out of the hole II) by gravity.
It is thought that the construction, operation, utility and advantages of this invention will now be quite apparent to those skilled in this art with- 50 out a more detailed description thereof.
The present embodiment of the invention has been described in considerable detail merely for the purposes of exemplification since in actual practice it attains the features of advantage 55 enumerated as desirable in the statement of the invention and the above description.
A doorknob assembly of the class described comprising a spindle, a sleeve for receiving one end of the spindle, a pin passing through the outer end of the sleeve, a knob formed around the outer end of said sleeve and the pin, said spindle having a slot in each of three edges thereof in that part which enters the sleeve, said slots in said sleeve, and a spring locking plate for holding the block in the hole, said plate having rounded ends and the sleeve having a recess surrounding the outer end of the hole having undercut end walls for receiving the rounded ends of the plate.
MELVIN HILL MORRELL.