Year: 1887

page_text: Date of Application, 4th Aug., 1887
Complete Left, 8th Sept., 1887.
Complete Accepted, 11th Oct., 1887
I HENRY GEORGE MILESON, 127 Clarence Road Clapton London in the County
Middlesex Drawing Instrument Maker do hereby declare the nature of this invention
to be as follows:-
:-
A method of so constructing and fitting a milled adjusting screw or bolt that the
possibility of loss of such screw or bolt is entirely prevented, thereby ensuring the
permanent use of the Instrument (or other wherever it may be used) at the same
time the ordinary working is not in any way interfered with, in pencil point of
Drawing Instrument for instance a screwed bolt as Fig. 1, is fixed firmly in block of
Pencil Holding Point, in back part of block, leaving the front part to move free on
the bolt, a portion of bolt projecting from front of block, carries a milled nut which
moves freely on that part of bolt, this bolt constructed with flange or head larger than
screwed part effectualy prevents the milled nut from coming off. Fig. 4 is for effecting
a similar object where there are two points or nibs as in Drawing Pens &c. a small
collar shaped as Fig. 5, is fitted firmly on the part of screw prong projecting inside of
Top or lifting nib, this can be freely raised for cleaning or other purposes the screw
remains in its place.
Drawings sent are much larger than those in actual use in Drawing Instruments
with the exception of Figs. III & VI.
Fig. 1. The screwed Bolt.
Fig. II. The Bolt with milled nut.
Fig. III. The Bolt in its position as used.
Fig. IV. The milled screw with Collar attached.
Fig. V. Sectional view of Collar.
Fig. VI. The Collar in its position as used.
Fig. VII. Ordinary Screw for use in Pencil holding point.
Fig. VIII. Ordinary Screw for use in Drawing Pen &c.

page_text: COMPLETE SPECIFICATION.
An Improved Screw for Mathematical and other Instruments.
HENRY GEORGE MILESON 127 Clarence Road, Lower Clapton, London in the
County of Middlesex, Drawing Instrument Maker, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
A method of so constructing and fitting a milled adjusting screw or bolt that the
possibility of loss of such screw or bolt is entirely prevented, thereby insuring the
permanent use of the Instrument or other wherever it may be used, at the same time
the ordinary working is not in any way impaired. "In pencil-point of Drawing
Instrument for instance." Fig. I. see drawings lodged with my Provisional Specifica-
tion is an enlarged representation of a screwed bolt for Pencil holding and other
points. Fig. II. Is the screwed bolt with milled nut on. Fig. III. Shews the same
fixed in its position in block of pencil point, by being swelled or rivetted on
reverse side leaving the front part of block to move freely on the bolt, this part of
bolt projecting from front of block, carries a milled nut which moves freely on that
part of bolt this part constructed with head or flange larger than screwed part,
carrying the milled nut effectually prevents the nut from coming off. Fig. IV. Is for
effecting a similar object where there are two nibs or points as in Drawing Pens &c.,
the nut or collar for articles of this construction, is shaped as Fig. V and constructed
of any metal that is convenient is here necessarily placed on the part of prong or
bolt part of screw projecting inside of top or lifting nib. This also is effective in
retaining the adjusting screw in its place in top nib, as nib can be fully raised
without removing the screw from nib. There is likewise another advantage in this
case, as the spring usually placed inside of such instruments as the above mentioned
Drawing Pens &c. may be done away with, the screw fitted in the manner described
effectually lifting the nib to the full extent of the screw, which would be generally
sufficient to enable the nibs to be cleaned without removing the screw entirely from
the lower nib. Fig. VI. Shows the above in its position in drawing pen nib.
The said invention may be worked or applied in various ways or by any other
means whereby the object is attained, with or without the moveable safety nut or
collar the above allowing of the most varied and reliable application is selected
for the purpose of illustrating my invention. The nut may be placed on the end
of ordinary screw of pencil holding point, by leaving sufficient length of screw
projecting or on any screw or bolt where convenient or necessary, either fixed
or to move for the purpose of securing the perfect safety from loss of the
adjusting screws and other moveable parts in mathematical and other Instruments
where it can be used. The screwed bolt may be fixed in the article or in milled nut,
the nut may be plain, milled, various sided or square sided, the nut may be recessed

page_text: or made in any way for greater neatness where convenient or necessary. The nib of
Drawing Pen &c. may be used in place of nut by forming collar or shoulder on bolt
and rivetting the milled nut thereon, also by putting pin through screw bolt in place
of the nut.
Figs. VII and VIII are the screws at present in use.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I therefore claim as the principle of
my Invention all and in particular the whole of the method as substantially set forth
and herein-before described.