IMPROVEMENTS IN TURNBUCKLES AND IN SECURING DOOR KNOBS OR HANDLES AND TURNBUCKLES TO THEIR SPINDLES
Year: 1870

page_text: LETTERS PATENT to Francis James Barnby, of Hull, in the County
of Kingston-upon-Hull, for the Invention of "IMPROVEMENTS IN
TURNBUCKLES AND IN SECURING DOOR KNOBS OR HANDLES AND TURNBUCKLES
TO THEIR SPINDLES."
PROVISIONAL SPECIFICATION left by the said Francis James Barnby
at the Office of the Commissioners of Patents, with his Petition,
on the 1st August 1870.
I, FRANCIS JAMES BARNBY, of Hull, in the County of Kingston-
upon-Hull, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN TURNBUCKLES AND IN SECURING DOOR KNOBS OR HANDLES AND
TURNBUCKLES TO THEIR SPINDLES," to be as follows:
-
My Invention relates, 1st., to improvements in securing door knobs or
handles and turnbuckles to their spindles, according to which the set
screw employed for securing the same is caused to pass across the
spindle instead of the end or point abutting directly against the side of

page_text: the spindle as usual hitherto, whereby all liability of the screw working
loose is avoided.
In applying my improvements I prefer to employ a set screw having
a long taper point, which is received in one of a series of taper grooves
made across one or more sides of the spindle to correspond, the screw
hole in the knob or turnbuckle through which said screw passes being
made to lead in the required direction alongside the spindle instead of
directly against the same. Thus the spindle being inserted in the knob
or handle and the set screw tightened up its tapered point received in
a corresponding groove in the spindle as before mentioned acts as a
wedge between the side of the spindle and the interior of the knob or
handle, firmly securing the latter thereon. In this position the screw
has little or no tendency to work loose by the constant turning of the
knob or handle.
My Invention relates, 2ndly., to improvements in turnbuckles, which
have for their object to prevent undue wear of the spindle hole in the
door, and also to limit the rotation of the spindle and turnbuckle. For
this purpose I form a raised rim or shoulder round the spindle hole of
the turnbuckle, extending about 3/4ths of a circle, which rim is received
in a circular recess in the door. In this recess is placed a pin or stop
rising between the ends of the curved shoulder or rim by which the
motion of the turnbuckle is limited to about a quarter revolution, and
the raised rim being fitted into a corresponding recess prevents the
spindle hole being worn by the constant turning of the spindle.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Francis James Barnby in the Great Seal Patent
Office on the 31st January 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANCIS
JAMES BARNBY, of Hull, in the County of Kingston-upon-Hull, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of August, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Francis James Barnby, Her special

page_text: licence that I, the said Francis James Barnby, my executors, ad-
ministrators, and assigns, or such others as I, the said Francis
James Barnby, my 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 TURNBUCKLES AND IN SECURING DOOR
KNOBS OR HANDLES AND TURNBUCKLES TO THEIR SPINDLES," upon the condition
(amongst others) that I, the said Francis James Barnby, my executors
or administrators, by an instrument in writing under my, or their, or
one of their hands and seals, 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
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said Francis James Barnby, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the Sheet of Drawings
hercunto annexed and to the letters and figures marked thereon (that is
to say):
My Invention relates, first, to improvements in securing door knobs
or handles and turnbuckles to their spindles, according to which the set
screw employed for securing the same is caused to pass across the
spindle instead of the end or point abutting directly against the side of
the spindle as usual hitherto, whereby all liability of the screw working
loose is avoided.
In applying my improvements I employ a set screw having a long
taper point, which is received in one of a series of taper grooves made
across one or more sides of the spindle to correspond, the screw hole in
the knob or turnbuckle through which said screw passes being made to
lead in the required direction alongside the spindle, instead of directly
against the same. Thus the spindle being inserted in the knob or handle
and the set screw tightened up its tapered point received in a corre-
sponding groove in the spindle as before mentioned acts as a wedge
between the side of the spindle and the interior of the knob or handle,
firmly securing the latter thereon. In this position the screw has little

page_text: or no tendency to work loose by the constant turning of the knob or
handle.
My Invention relates, 2ndly, to improvements in turnbuckles, which
improvements have for their object to prevent undue wear of the spindle
hole in the door, and also to limit the rotation of the spindle and turn-
buckle. For this purpose I form a raised rim or shoulder round the
spindle hole of the turnbuckle, extending about three-fourths of a circle,
which rim is received in a circular recess in the door.
In this recess is
placed a pin or stop rising between the ends of the curved shoulder or
rim, by which the motion of the turnbuckle is limited to about a quarter
revolution, and the raised rim being fitted into a corresponding recess
prevents the spindle hole being worn by the constant turning of the
;
· Figure 1 is an edge view of a portion of a room door showing the two
knobs attached to their spindle according to my Invention, one knob
being partly in section for greater clearness; Figure 2 is a cross scction
of one knob taken on line 1-2, Figure 1, showing the relative positions
of the set screw and spindle; Figure 3 is a detached view of the latter
Figure 4 is a sectional view of a door illustrating the same means of
attachment as applied to turnbuckles, and also the improved turnbuckles
described under the second head of my Invention; Figure 5 is a face
view of the turnbuckle detached from its spindle; Figure 6 is an under-
side view of the same showing the raised rim or shoulder formed at back
of the turnbuckle for limiting the extent of its rotation, and Figure 7,
shows the circular recess formed in the door to receive said rim. Similar
letters of reference indicate the same parts in all the Figures where they
recur.
a is the spindle of the knob, handle, or turnbuckle as the case may be,
and b, b, b, b, grooves or recesses formed across one or more of its sides to
correspond to the taper point c¹ of a set screw c received in a hole
tapped in the knob or turnbuckle. The direction of this hole is such
that the set screw c is caused to pass at one side of the spindle in one of
the grooves b as shown in Figure 2, instead of its point bearing directly
against the spindle as usual. The spindle, which may be square, is fitted
into a corresponding socket in the knob or turnbuckle, and the point c¹
of the set screw being received in one of the taper grooves b acts

page_text: as a wedge between the side of the spindle and its socket. The spindle
is thus held forcibly against the interior of the socket on the opposite
side to the set screw c whereby the knob, handle, or turnbuckle is
firmly secured to the spindle a without any liability to work loose.
The second feature of my Invention is the improvement in turnbuckles
shown in Figures 4, 5, 6, 7; e is the turnbuckle, on the under surface of
which I form a raised shoulder f, extending about three parts round the
spindle hole
this shoulder is received and turns in a circular recess h
formed in the door to correspond; in this recess and between the ends f¹
of the shoulderfis a fixed pin or stop i against which one or other of
said ends fabuts to limit the movement of the turnbuckle to a quarter
revolution, more or less, according to the distance between the ends f¹.
The rim or shoulder being fitted in a corresponding recess h in which it
rotates, as above described, and the knob being provided with a collar k
around the spindle, also recessed in the opposite side of the door, the
spindle turns concentrically in the spindle hole through the door without
contact therewith, thus preventing the enlargement of the spindle hole
by the angles of the spindle and the working loose of the latter.
Having described the nature of my Invention and the manner of
performing the same, I declare that what I claim as my Invention to be
protected by the herein-before in part recited Letters Patent is,―
1st. Securing door knobs or handles and turnbuckles to their spindles
by means of a taper pointed screw applied and acting substantially as
herein before described and illustrated in the Drawings annexed.
2ndly. I claim the application to a turnbuckle of the raised segment
or shoulder recessed in the door, and acting in combination with a fixed
stop, all substantially as shown and described and for the purpose set
forth.
In witness whereof, I, the said Francis James Barnby, have
hereunto set my hand and seal, this Twenty-sixth day of
FRANCIS JAMES BARNBY. (L.S.)