IMPROVEMENTS IN ATTACHING DOOR AND OTHER KNOBS TO SPINDLES
Year: 1872

page_text: LETTERS PATENT to Frederic Arthur Harrison, of Birmingham, in the
County of Warwick, Manufacturing Jeweller, and Charles Priestland,
of Birmingham aforesaid, Tool Maker, for the Invention of "In-
Sealed the 20th September 1872, and dated the 16th April 1872.
·
PROVISIONAL SPECIFICATION left by the said Frederic Arthur'
Harrison and Charles Priestland at the Office of the Commissioners:
of Patents, with their Petition, on the 16th April 1872.
We, FREDERIC ARTHUR HARRISON, of Birmingham, in the County
of Warwick, Manufacturing Jeweller, and CHARLES PRIESTLAND, of
Birmingham aforesaid, Tool Maker, do hereby declare the nature of.
the said Invention for "IMPROVEMENTS IN ATTACHING DOOR AND OTHER KNOBS
TO SPINDLES," to be as follows :—
Our Invention consists of the construction and arrangement of parts
herein-after described for attaching door and other knobs to spindles,
whereby the fixing of the knob at the required place on the spindle is
effected with great facility, and the knob is very firmly secured to the
spindler -
-
'

page_text: Instead of attaching the knob to the spindle by means of a screw pin
passing through the neck of the knob taking into a hole in the spindle as
usual, we construct the fixing parts and the spindle in the following
manner-In the square hole in the bush of the knob we place a
gripping piece which is capable of a limited rising and falling motion in 8
the said hole. The said gripping piece consists of an oblong head on the
bottom of a screwed stem, the said stem passing through the neck of the
knob. The upper side of the said head of the gripping piece forms
bearing shoulders for fixing the spindle, herein-after described. This
gripping piece is supported and raised and lowered in the hole in the 1
bush of the knob by means of a hollow screw nut taking on to the upper
end of the screwed stem, the said nut occupying a recess in and lying
flush with the outside of the neck of the knob. The end of the square
spindle to be fixed to the knob is hollow or tubular, and along one face
of the said spindle a longitudinal slot is made opening into the hollow 1
end of the spindle. The parts on either side this slot constitute under-
cut or internal shoulders for the purpose herein-after explained.
.
In fixing the knob to the spindle, the knob is so presented to the
hollow and slotted end of the spindle that the screwed stem of the
gripping piece in the bush of the knob is opposite the slot in the spindle. 2
By then pushing the knob on the spindle the bearing shoulders of the
head of the gripping piece engage under the internal shoulders of the
spindle, the screwed stem of the gripping piece occupying the slot in
the spindle. After the knob has been, adjusted on the spindle to the
distance required by the thickness of the door or other article, the screw 2
nut is driven home by giving. it a partial rotation. The gripping picce
is thereby raised in the bush of the knob, and the bearing shoulders of
its head are made to press upon and grip very firmly the internal
shoulders of the spindle, and the knob is attached very securely to the

page_text: for the fixed knob, or one knob may be permanently fixed to the spindlė
in the ordinary way.
The hollow and slotted spindle may either be, made by cutting or
shaping the end or ends of a solid spindle, or from sheet iron or steel.
In the latter case the whole spindle is hollow, the slots on one of the .
faces of the spindle being situated at either end, a strengthening piece.
being between the said slots.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Frederic Arthur Harrison and Charles Priestland
in the Great Seal Patent Office on the 3rd October 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, FREDERIC
ARTHUR HARRISON, of Birmingham, in the County of Warwick, Manu- .
facturing Jeweller, and OHARLES PRIESTLAND, of Birmingham aforesaid,.
Tool Maker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of April, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Frederic Arthur Harrison and Charles
Priestland, Her special licence that we, the said Frederic Arthur
Harrison and Charles Priestland, our executors, administrators, and
assigns, or such others as we, the said Frederic Arthur Harrison and
Charles Priestland, our executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "IMPROVEMENTS IN ATTACHING DOOR AND OTHER KNOBS TO SPINDLES," upon
the condition (amongst others) that we, the said Frederic Arthur
Harrison and Charles Priestland, our executors or administrators, by an
instrument in writing under our or their bands and seals, or under the
hand and seal of one of us or them, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same-to be filed in the Great Seal
-

page_text: Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
"
· NOW KNOW YE, that I, the said Frederic Arthur Harrison, on behalf
of myself and the said Charles Priestland, do hereby declare the nature
of the said Invention, and in what manner the same is to be performed, 5
to be particularly described and ascertained in and by the following
statement thereof, that is to say :—
Our Invention consists of the construction and arrangement of parts
herein-after described for attaching door and other knobs to spindles,
whereby the fixing of the knob at the required place on the spindle is 1
effected with great facility, and the knob is very firmly secured to the
spindle.
Instead of attaching the knob to the spindle by a screw pin passing
through. the neck of the knob taking into a hole in the spindle, as
usual, we construct the fixing parts and the spindle in the following. 1
manner :-In the square hole in the bush of the knob we place a gripping
piece, which is capable of a limited rising and falling motion in the said.
hole. The said gripping piece consists of an oblong head on the bottom
of a screwed stem, the said stem passing through the neck of the knob.
The upper side of the said head of the gripping piece forms bearing 2
shoulders for fixing the spindle hercin-after described. This gripping
piece is supported and raised and lowered in the hole in the bush of the
knob by means of a hollow screw nut taking onto the upper end of the
screwed stem, the said nut occupying a recess in and lying flush with
the outside of the neck of the knob. The end of the square spindle to 2
be fixed to the knob is hollow or tubular, and along one face of the said
spindle a longitudinal slot is made opening into the hollow end of the
spindle. The parts on either side this slot constitute undercut or internal
shoulders for the purpose herein-after explained.
In fixing the knob to the spindle, the knob is so presented to the 3
hollow and slotted end of the spindle that the screwed stem of the
gripping piece in the bush of the knob is opposite the slot in the spindle.
By then pushing the knob on the spindle the bearing shoulders of the
head of the gripping piece engage under the internal shoulders of the
spindle, the screwed stem of the gripping picce occupying the slot in a
the spindle. After the knob has been adjusted on the spindle to the
distance required by the thickness of the door or other article, the screw

page_text: nut' is driven home by giving it a partial rotation. The gripping piece
is thereby raised in the bush of the knob and the bearing.shoulders of its
head are made to press upon and grip very firmly the internal shoulders
of the spindle, and the knob is attached very securely to the spindle.
"
By a partial rotation of the screw nut in the opposite direction to that
described, the grip or hold of the gripping piece on the internal shoulders
of the spindle is relaxed, the knob is thereby released, and may be
withdrawn by a sliding motion from off the spindle.
The knob at either end of the spindle may be attached according to
our Invention, the slot for the adjustable knob being longer than.that
for the fixed knob; or one knob may be permanently fixed to the spindle
in the ordinary way.
•
The hollow and slotted spindle may either be made by cutting or
shaping the end or ends of a solid spindle, or from sheet iron or steel.
In the latter case the whole spindle is hollow, the slots on one of the
faces of the spindle being situated at either end.
Having explained the nature of our Invention, we will proceed to
describe with reference to the accompanying Drawing the manner in
which the same is to be performed.
וד. . י: .
) Figure 1 represents in longitudinal section a pair of door knobs
attached to their spindle according to our Invention.
Figure 2 is a cross section of one of the knobs and the spindle taken
on the line a, Figure 1; and Figure 3 is a similar cross section of the
knob without the spindle and fixing mechanism.
5. Figure 4 represents a portion of Figure 2 drawn to a larger scale for
the purpose of better exhibiting the construction and action of the fixing
mechanism.
1
Figure 5 represents a plan and end elevation, and Figure 6 a vertical
section of the spindle separately, and Figures 7 and 8 represent the
O parts of the fixing mechanism separately.
The same letters of reference indicate the same parts in each of the
Figures of the Drawing.
•
b is the square spindle, and c, c, are the two. knobs attached thereto.
according to our Invention. In the square hole d in each of the knobs c

page_text: is a gripping piece e, f, shown separately in Figure 7, the said gripping
piece being capable of rising and falling in the said square hole. The
said gripping piece consists of an oblong head e on the bottom of the
screwed stem f, the said stem passing through the hole at g in the neck
of the knob (see Figure 3). Screwing on the screwed stem ƒ is a hollow a
screw nut (shown separately in Figure 8), the said nut h occupying
the recess in the neck of the knob, and lying flush with the outside of
the said neck, as represented in the Drawing. By means of the nut h
the gripping piece e is raised and lowered and supported in the bush d
of the knob..
Each end of the spindle 6 is hollow or tubular, the tubular end being
marked b³, and in one face of the spindle 6 and at each end is a longi-
tudinal slot opening into the hollow end 6' (see the end elevation,
Figure 5)... The hollow end of the spindle is cylindrical, and the upper
or acting face of the gripping piece e is of a similar curvature. The 1
parts of the hollow end of the spindle on either side the slot. constitute
undercut or internal shoulders 6, 6, (see Figure 4) for receiving the
bearing shoulders e³, e³, of the gripping piece e. One of the hollow and
slotted ends of the spindle is made longer than the other for the purpose
of permitting of the required adjustment of the moveable knob to the 2
thickness of the door or surface with which the knobs are to be used.
In securing the gripping picce e, f, in its place in the bush d, the said
gripping piece is introduced into the said bush and its screwed stem f
inserted in the hole g in the neck of the knob. By then screwing the
hollow screw nut onto the end of the screwed stem f the gripping 2
piece e is secured in its place.
In order to fix one or other of the knobs c, c, to the spindle b, the
knob is so presented to the hollow and slotted end of the spindle that
the screwed stem is opposite the slot 68 in the said end. The knob is
then pushed onto the spindle, the bearing shoulders e³, e³, of the gripping a
piece e engaging under the internal shoulders 6, 6, of the hollow end
of the spindle, in the manner best seen in Figures 2 and 4, the screwed
stem foccupying the slot in the end of the spindle. The knob having
been adjusted on the spindle by sliding it to the distance required by the
thickness of the door or other article, the screw nut h is driven home by g
giving it a partial rotation. The gripping piece is thereby raised in the
bush & of the knob, and the bearing shoulders e³, e³, are made to press

page_text: upon and grip very firmly the internal shoulders 6, 6, of the spindle,
and the knob is thereby attached very securely to the spindle.
The removal of the knob from the spindle is effected by a partial
rotation of the nut h in the opposite direction to that described when the
grip or hold of the gripping piece e on the shoulders b*, b, of the spindle
is relaxed, and the knob may be withdrawn from the spindle by a sliding
motion.
The fixed knob of the pair of knobs may be attached to the spindle in
the ordinary way instead of by our Invention.
Figure 9 represents in plan and end elevation a spindle made from sheet
iron or steel, to be used in place of the spindle represented where the
hollow and slotted ends are made by cutting away or shaping the ends of
a solid spindle. In making the said hollow sheet metal spindle, Figure 9,
we take the blank Figure 10, and by means of shaping tools, or by a
drawing process, we give it the trough form represented in Figure 11.
By a subsequent process we close or turn over the upper parts of the
sides i, i, of the trough so as to form a hollow square spindle, as repre-
sented in Figure 9, the junction of the closed top or face at k being
soldered or brazed. A hollow spindle is thus made, having at either end
the required longitudinal slots 1, 2, for the screwed stem of the gripping
piece e to work in. When a spindle of this kind is used, the top or face
of the gripping piece is flat to grip upon the flat internal shoulders of
the spindle.
The processes by which the sheet metal spindle is made are of the
ordinary kind, and constitute no part of our Invention.
Having now described the nature of our Invention and the manner
in which the same is to be performed, we wish it to be understood that
we do not limit ourselves to the precise details herein described and
illustrated, as the same may be varied without departing from the nature
of our Invention; but we claim as our Invention the improvements
in attaching door and other knobs to spindles, herein-before described
and illustrated in the accompanying Drawing, that is to say, attaching
knobs to spindles by means of a gripping piece situated in the bush of
the knob, the said gripping piece being supported and fixed by a hollow
screw nut, and made to engage with and grip internal shoulders in
the hollow and slotted end of the spindle, the parts of the gripping

page_text: mechanism and the spindle being constructed and combined substantially
as described and illustrated.
In witness whereof, I, the said Frederic Arthur Harrison, have
hereunto set my hand and seal, this Second day of October, in
the year of our Lord One thousand eight hundred and seventy- |
two
Witness,
FREDERIO ARTHUR HARRISON. (L.B.)
RICHARD SKERRETT,
Clerk to George Shaw,
Birmingham.