IMPROVEMENTS IN ATTACHING DOOR KNOBS TO THEIR SPINDLES."
Year: 1881

page_text: LETTERS PATENT to Benjamin William Spittle, of Wednesbury, in the
County of Stafford, for an Invention of "IMPROVEMENTS IN ATTACHING
DOOR KNOBS TO THEIR SPINDLES."
PROVISIONAL SPECIFICATION left by the said Benjamin William Spittle at
"
the Office of the Commissioners of Patents on the 10th October 1881.
BENJAMIN WILLIAM SPITTLE, of Wednesbury, in the County of Stafford.
IMPROVEMENTS IN ATTACHING DOOR KNOBS TO THEIR SPINDLES."
My Invention has for its object improvements in attaching door knobs and
other handles to their spindles.
According to my Invention the centre rose has a square hole for fitting tightly
upon the spindle of the knob or handle; or a separate washer with a square hole
may be used. This washer or rose is provided with a spring on its face, having a
projection at its point to take into suitable recesses formed in the face of the
shoulder of the knob or handle. These recesses are bevelled or rounded on one
side to allow the knob to screw up against the washer or rose; then by depressing
the spring the knob may be unscrewed. By these means knobs are most securely
fastened to their spindles, while at the same time they may be removed without
much trouble.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Benjamin William Spittle in the Great Seal Patent Office on the
6th April 1882.
BENJAMIN WILLIAM SPITTLE, of Wednesbury, in the County of Stafford.
"IMPROVEMENTS IN ATTACHING DOOR KNOBS TO THEIR SPINDLES."
This Invention has for its object the attachment of knobs and other handles to
their spindles without the employment of neck or other screws.
Fig. 1 represents a view of a pair of knobs for a door with the spindle and
washer.
Fig. 2, the washer detached, and
Fig. 3, the whole as connected with the door.
Fig. 4 shews a view of a pair of knobs and spindles connected by a washer of
modified form.
Fig. 5, a front and side view of the washer.
Fig. 6, the whole as connected with the door.
In Fig. 1, A represents the fast knob secured to the screwed spindle B, which is
passed through the door, after which the locking washer C, Fig. 2, is slipped on ;
the knob D is then screwed up,; pressing down the toothed spring E on the
washer C, Fig. 2, until a proper adjustment is obtained, when the tooth on the
spring E engages in one of the slots F on the shoulder of the free knob, and both
knobs are fitted to the door, as shewn in Fig. 5. To release them it is simply
necessary to hold down the edge of the toothed spring at the point G, Fig. 3,
thereby releasing the tooth on the spring E from the slots F, and the knob D can
be unscrewed.
Figs. 4, 5, and 6 represent a modification of the above, consisting chiefly of a
simplified form of constructing the locking washer, which is here shewn at Fig. 5
in front and side view; it consists of a thin disc of metal stamped into tho form
shewn, and slotted as at H, the part K being turned slightly off the plane of the
disc, and this forming a natural spring in conjunction with the two turned out
knibs L., A small teat M is formed on the inside of this washer, which teat is
placed to engage in one of the holes N in the shoulder of the free knob. These
holes N are pierced through the shoulder of this knob to admit of a blunt awl
being inserted through one of them to bear upon the disc, and thus release the
teat M from its hold and admit the withdrawal of the free knob when required to
be removed.
The adjustment of the parts in fixing is as described in the former Figures, but
this form of spring disc admits, as seen at Fig. 6, of the employment of a rose O,
as the releasing of the spring attachment is effected through the shoulder of the
knob.
Having thus described the nature of the said Invention, and the manner in
which the same is to be performed, I claim,―
The improvements in attaching knobs to their spindles and adjusting them to
doors by means of a sliding spring disc upon a screwed spindle engaging in sinkings
upon the shoulder of the knob, substantially as herein more fully set forth and
specified.
In witness whereof, I, the said Benjamin William Spittle, have hereunto set
my hand and seal, this Fifth day of April, in the year of our Lord One
thousand eight hundred and eighty two.