USRE4114E - Matthew andrew - Google Patents

Description

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MATTHEW ANDREW, 0F MELBOURNE, VICTORIA.

. Lmmraunz No. 101,808, and pn-,112, 1870; remuant. 4,114, ma: Sapman e, 1870.l

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To all whom it may concern Beit known that I, Msr'rnnw ANDREW, of Mel-v bourne, Colony of Victoria, have invented a new and useful Improvement in Attaching Knobs to spindles; and I do -hereby kdeclare the following to be a full, clear, and exact description thereof', which will enable those skilled in theartto maks anduse the same. reference being had to the accompanying drawing formin .part of this speciiication,in which drawingigure 1 represents a sectional side elevation of this invention.

Figlre 2 is a transverse section thereof.

Similar letters indicate corresponding parts.

This invention relates to'an improvement in that class of door-knobs which is fastened on their spindies by a spring-catch and ratehct-teeth, so that the distance between the two knobs can be readily adjusted to correspond to the thickness of the door to which they are to be attached.

My invention consists in the arrangement ul a spring-catch extending beyond the side ofthe spindle, 4in combination with a hole, extending through the shank of the knob, and situated at the side of the spindle, in such-a manner that, by inserting a bradawl or other like instrument into the hole in the knob, the spring can be fowed back, and the knob released, while tho spindle retains its full strength.

In the drawingy The letter A esignates' a door-knob, made ot' any suitable material, aud 'provided with a socket to receive the spindle B.

- One side of this spindle is provided with a series of ratchet-teeth a, and in the socket of the knob is formed a chamber, b, to receive ,the spring-catch c.

If the spindle is pushed into its socket, this springcatch en with the ratchet-teeth, and retains said -v spindle, the ratchet-teeth being so formed that they fastening door-knobs on' their spindles;

slide over the catch when the spindle is pushed in; but they do not allow ofthe spindle being withdrawn.

In older to release the spindle, the spring-catch has to be pressed back; and to-eii'ect this purpose I make the spring catch so that it projects over one side 'of the spindle; and in the shankof the knob Iproduce a hole, d. which passes d own at theV side of the vspindle opposite 'the projecting portion f the spring-catch, best seen in fig. 2 of thev drawing.

Byinserting a brad-awl or other similar instrument into this hole, the spring-catch can be, readily preed back, and the spindlereleased.

I am aware that a spindle provided with ratchetteeth as a means for securing the same in the knob has already been used; but in all casesof this kind known to me the spindle is provided with aslot, through which the instrument for disengaging passes, and by such slot the construction ofthe spindle4 is rendered extremely diflicult; and, furthermore, the spindle is weakened, so that it is liable to be wrenched otf in ashort time. t l l i By my invention, I :im enabled to dispense with theslot inthe spindle, so that said spindlev can be easily made, and that it retains its full strength.

, I do not claim broadlyas my invention the arrange` ment 'of ratchet-teeth and a catch for the purpose ot but Having thus described my invention, Y What I claim as new, and desire Ato .secure by Letters Patent, ist I The spring-catch C, arranged toL project over one side of the spindle B, in combination with a hole, d, in the shank ot' the knob, at one side of the spindle, substantially as and for the purpose described.

Witnesses: MATTW. ANDREW.

W. HAUFF, n Crus. Wammes.'

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