An Improved Method of Holding Pencils, Crayons, Prepared Chalk, and the like in Compasses, also applicable to Pencil Holders or the like.
Year: 1897

page_text: Date of Application, 23rd Aug., 1897
Complete Specification Left, 23rd May, 1898-Accepted, 25th June, 1898
Date DANNIICATION, GOTO Aug., 1097
Complete Specification Left, 23rd May, 1898-Accepted, 25th June, 1898
PROVISIONAL SPECIFICATION.
An Improved Method of Holding Pencils, Crayons, Prepared Chalk,
and the like in Compasses, also applicable to Pencil Holders or
the like.
We, LAURENCE CONWAY, of 21, The Willows, Fairfield, in the City of Liverpool,
Schoolmaster, and EDWARD MCGUINNESS, 162, Harrowby Street, in the City of
Liverpool, Schoolmaster, do hereby declare the nature of this invention to be as
follows:-
This invention is designed principally to hold pencils or the like in compasses
without the use of screws. Instead of inserting a screw in the tube attached to
the compass to carry the pencil, it is proposed to line the said tube with india-
rubber or other similar elastic substance. This india-rubber lining may take the
form of a tube projecting through each end of the aforesaid attached metal tube
and having its external diameter equal to the internal diameter of the metal tube,
whilst its internal diameter is slightly less than the diameter of the pencil or
crayon it is required to hold. Each of the projecting ends of this indiarubber tube
may be moulded to form a collar the under end of which will rest upon the end
of the aforesaid attached metal tube and thus prevent the rubber tube from sliding
up or down.
If desired a spring or other similar device may be attached to the inside of the
metal tube in order to vary the diameter of the indiarubber tube when it is
required to carry pencils of different thicknesses.
We have described one method of fixing the indiarubber lining in the compass
tube but it is evident that it may be attached to the tube by some adhesive sub-
stance or in any other suitable way.
Dated this 21st day of August 1897
LAURENCE CONWAY.
EDWARD MCGUINNESS.
An Improved Method of Holding Pencils, Crayons, Prepared Chalk,
and the like in Compasses, also applicable to Pencil Holders or
the like.
We, LAURENCE CONWAY, of 21, The Willows, Fairfield, in the City of Liverpool,
Schoolmaster, and EDWARD MCGUINNESS, of 162, Harrowby Street, in the City of
Liverpool, Schoolmaster, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention is designed principally to hold pencils or the like in compasses
without the use of screws. Instead of inserting a screw in the tube attached to

page_text: the compass to carry the pencil, it is proposed to line the said tube with india-
rubber or other similar elastic substance. This india-rubber lining may take the
form of a tube projecting through each end of the aforesaid attached metal tube
and having its external diameter equal to the internal diameter of the metal tube,
whilst its internal diameter is slightly less than the diameter of the pencil or
crayon it is required to hold. Each of the projecting ends of this rubber tube
may be moulded to form a collar, the under end of which will rest upon the end
of the aforesaid attached metal tube, and thus prevent the rubber tube from sliding
up or down.
If desired, a spring or other equivalent device may be attached to the inside
of the metal tube in order to vary the diameter of the rubber lining when it is
required to carry pencils of different thicknesses. Or the latter object may be
effected without a spring by attaching a small wedge-shaped piece of rubber to the
exterior of the rubber tube and making in the metal tube a slot (or a groove of a
section corresponding to the said wedge) into which the said wedge may project.
By twisting round the rubber tube the wedge will leave the groove or slot, and,
meeting the inner side of the metal tube, will reduce the diameter of the rubber
tube.
In order that our invention and the manner of carrying it into effect may be
properly understood we have appended an explanatory sheet of drawings in which
Figure 1 is a general view of a compass to which our invention is applied,
Figures 2 & 3 are side elevations and plans of a rubber tube and a metal tube
respectively,
it,
Figure 4 is a view of a part of a leg of a compass with our invention applied to
Figure 5 is a similar view to that in Figure 4 but shows the front and side eleva-
tion of a spring, and
Figure 6 is a side view of a rubber tube held in a split metal tube.
In these A is the india-rubber tube with the top and bottom ends moulded to
form collars A¹, which rest on the ends of B the metal tube attached to the leg C
of the compass. D) is a spring inside the metal tube and fastened to it. This
spring presses against the rubber tube A and enables it to grip pencils of different
thicknesses. Or it will carry pencils of different thicknesses if the metal tube is
split as in E (Figure 6).
We have described one method of fixing the india-rubber lining in the metal
tube but it is evident that it may be attached to the tube by some adhesive sub-
stance or in any other suitable way. Furthermore the india-rubber lining need
not take the form of a tube but might consist of india-rubber in the form of rings,
strips or any other suitable shape.
Though we have only shown how our invention may be applied to a compass
it is evident that it may be similarly applied to pencil holders and the like.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
1
1. The improved method of holding pencils, crayons, prepared chalk and the
like in compasses, pencil holders and the like by means of tubes lined with rubber
or the like, substantially as described.
2. In an apparatus of the kind set forth the arrangement of a spring or other
equivalent device for regulating the diameter of the rubber lining whereby it will
be possible to carry pencils or the like of different thicknesses.
Dated this 21st day of Nov 1898
LAURENCE CONWAY.
EDWARD MCGUINNESS.