US843052A - Knob attachment. - Google Patents

Description

PATENTED FEB. 5, 1907.

M. WEBER. KNOB ATTACHMENT. APPLIOATION FILED NOV. 2a. 1905.

' Wan wane? 5 MARTIN WEBER, OF DENVER, COLORADO.

- KNOB ATTACHMENT.

Specification of Letters Patent.

Patented Feb. 5, 1907;

Application filed November 29, 1905. Serial No. 289,614. I

To a, whom it may concern.-

Be it known that I, MARTIN WEBER, a citizen of'the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Im rovements in Knob Attachments and I do eclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to im rovements in devices for attaching door-kno s to the spindles of looks. I I

The object of the invention is to provide a simple, inexpensive, durable, and eflicient attaching device of this character by means of which the knob may be quickly applied to and adjusted upon the s' indle and as quickly and easily removed t erefrom.

With the above and other objects in view the inventionconsists of certain novel features of construction, combination, and arrangement of parts, as will be hereinafter described and claimed.

, Inthe accompanying drawings, Figure 1 is a side elevation of a lock-spindle with two knobs secured upon its ends in accordance with my invention; Fig. 2, partly an elevation and partly a longitudinal sectional view of the same. Fig 3 is a transverse sectional view, and Fig 4 is a perspective view of one of the hubs or shanks of the door-knobs.

Referring to the drawingsby numeral, 1 denotes the usual rectangular spindle of a lock which has door-knobs 2 3 secured upon its posite ends. Whilethese knobs may be oi .any desired form and construction, I preferably construct them of a body or handgrip 4 and a hub or shank 5, which plarts are united by soft metal, cement, or ot er suitable material 6. The hubs or shanks 5 are tubular in form and'have rectangular bores to receive the ends of the spindle. The shank of the knob 2 is rigidly secured to the spindle 1 by a crossin, rivet, or the like 7, while the shank of t e knob 3 isadjustably and detachably mounted, as presently explained.

Each of the shanks 5 is. formed adjacent to its end with an annular-collar 8, which is adapted to engage the inner face of the body or handip 4 of the knob, as shown. The

inner en 9 of the shank is adapted to pro-' ject into an undercut recess or cavity 10 in the body 4 and is formed with an annu ar series of depressions or recesses 11, which are adapted to receive thebinding material 6, so that the handle or body 4 will be prevented from pulling ofl of the shank and spindle:

The knob 3 is detachably and ad 'ustably secured upon the spindle by means 0 a pawland-ratchet connection, the pawl being carried by the shank of the knob and the rack by the spindle. This rack 12 is formed upon one face of the spindle 1, adjacent to its beveled end 13, and the pawl 14 is in the form of a straight strip of spring metal, having one of its ends 15 bent at right angles to engage the teeth of the ratchet l2. This spring 14 is disposed in a longitudinally-extending seat or recess 16, formed in the outer face of the shank 5 of the knob 3 and extending through and beneath the collar or flange 8, as shown. At the outer end of the recess 16 is formed a transverse opening 17, through which the end 15 of the spring projects, so that it may engage the teeth of the ratchet 12. The spring is secured in the seat or recess 16 by wedging its inner end under the collar 8 and also, if desired, by driving a small wedge 18 between its upper face and the recess or opening in theco lar, as clearly shown in the drawings. It will be seen that when the spindle is inserted in the shank 5 of the knob 3 the end 15 of the spring-pawl 14 will be successively engaged with the teeth of the ratchet 12, so that the knob 3 will be prevented from sli ping ofl".' To permit the knob to be readi y removed, I form to one side of the recess or seat '16 a notch 19, in which a nail or pointed instrument may be inserted to raise the spring-pawl 14 sufficiently to disengage its end 15 from the teeth of the ratchet.

The construction, operation, and advantagesof the invention will be readily understood from the fore oing description, taken in connection with t e accompanying drawings. It will be seen that when one of the knobs is detachably and adjlustably secured upon the spindle, as set fort the partsmay be quickly adjusted upon a door of any thickness and securely locked thereon, so

that it will be impossible for the knobs to become detached without first manually liftin the spring-pawl14.

arious changes in the form, proportion,

and the minor details of construction may be.

resorted to without departing from the principle or sacrificing any of the advantages of the invention.

IIO

. Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is i In combination with a spindle having ratchet-teeth on one of its faces, a knob having a recess and a shank having oneend in said recess, said shank being provided with a bore to receive the spindle, and an annular collar bearin against one side of the knob and provided with an inwardly-widened, wedge-shaped open ng, said shank being provided with a transverse opening which we tends to the ratchet-face of the spindle and with a longitudinal opening which extends from said transverse opening to the Wedgeshaped opening in the collar a spr ng-pawl 1 comprising a straight arm in sai' longitudinal opening of the shank and opening of the collar, and a transverse arm in the transveise' opening of the shank and engaging 2 the ratchet-teeth of the spindle, a wedge 1n the opening of the collar and securing the end of the longer arm of the spring-pawl therein, the broadened end of said wedge extending into the recess in the knob, and a 2 my hand in presence of two subscribing Wit- 3 MARTIN WEBER.

Witnesses:

JOHN. G. HoLzwARTn, LUDOLF P. BI'scHoFF.

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