Improvements in Caps or Covers for Tobacco-pipe Bowls.
Year: 1894

page_text: Improvements in Caps or Covers for Tobacco-pipe Bowls.
WILLIAM PEARCE, Jeweller 52 Hylton Street, Birmingham, do hereby declare
the nature of this invention to be as follows :-
The invention consists of two parts, namely A. circular piece of metal
covering the mouth of the pipe and a spring band for attachment to the inside
of the said mouth.
The circular piece of metal is constructed with two slits from the circumference
to the centre leaving a tongue of metal which is required to act as spring. At the
free end of this spring, namely at the circumference, a perforation is made for the
insertion of a pivot, or if preferred may be left for the attachment of a hinge
joint.
When the cover is made with a pivot joint it slides from the left or right and
in doing so rises vertically by means of a small cam placed on the under side
of the cover.
When slid over the bowl the cam falls into the bowl and keeps the
cover in place. The spring tongue in the cover enables it to do this without
damage to the joint.
The spring band referred to is a strip of elastic metal, preferably steel, bent into
a circular shape but the two ends are not allowed to meet. At the middle of this
band and upon the edge is left a small lateral extension the free end of which is
bent at a right angle and perforated for the insertion of a rivet acting as a pivot
connecting the cover with the band. The extension mentioned can also be used to
make a hinge joint.
The improvement claimed is as follows:-That by the use of the spring band
mentioned above it can be inserted into the bowl of almost any size pipe with the
cover attached without any fitting or alteration of the bowl.
Dated 21st day of June 1894.
WILLIAM PEARCE.
WILLIAM PEARCE Jeweller 52 Hylton Street Birmingham, 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:
The invention cousists of two parts namely,-A circular piece of metal covering
the mouth of the pipe and a spring band for attachment to the inside of the said
mouth.
The circular piece of metal is constructed with two slits from the circumference
to the centre leaving a tongue of metal which is required to act as a spring. At
the free end of this tongue, namely at the circumference, a perforation is made for
the insertion of a pivot, or if preferred may be left for the attachment of a hinge
joint.

page_text: When the cover is made with a pivot joint it slides from the left or right and in
doing so rises vertically by means of a small cam placed on the under side of the
cover, when slid back over the bowl the cam falls into the bowl and keeps the
cover in place. The spring tongue in the cover enables it to do this without
damage to the joint.
The spring and referred to is a strip of elastic metal, preferably steel, bent into
a circular shape but the two ends are not allowed to meet. At the middle of this
band and upon the edge is left a small Interal extension the free end of which is
bent at a right angle and perforated for the insertion of a rivet acting as pivot
connecting the cover with the band.
In my Provisional Specification describe this my invention as being an article
in two parts; the one a circular piece of metal acting as cover, and the other a
spring band for attachment to any tobacco pipe bowl. I also described the cover
part as sliding from the right or the left over the aperture of the pipe. The cover
part was described as containing a spring tongue. Since filing the Provisional
Specification I have discarded this portion of the invention and adopted the
modification of a hinge joint, instead of a sliding one, which modification I duly
provided for in the Provisional Specification.
The adoption of a binged joint to the cover necessitates a different arrangement
of the cover as instend of sliding from the right to the left it is made to open and
close in a vertical direction.
The spring tongue referred to is now placed on the lateral extension of the
spring band instead of being part of the cover and serves the same purpose, namely,
to keep the cover rigid.
The foregoing modification does not affect any essential of the Provisional
Specification, but was merely omitted to be described in detail as is now done.
I will now proceed to explain more particularly how the invention may be
performed, having reference to the accompanying illustrative sheet of drawings
upon which are figures and letters of reference like letters referring throughout the
several viewa to the same thing or part and in which
Figure 1. represents the flexible steel band for insertion into the bowl of the
tobacco pipe and lettered A.
Figure 2. represents the lid or cover of perforations to admit air to the bowl and
lettered B.
Figure 3. shows A & B. connected together by a hinged joint as provided for in
my Provisional Specification.
Figure 4. shows A. & B. connected together and viewed vertically.
Figure 5. shows A. & B. connected together and as the complete cover would
appear when in readiness for attachment to a tobacco pipe bowl.
The letters E. in Figures 1-3-4-5 represent small portions of the spring
bent at right angles, and to prevent the spring A. becoming displaced when
in use.
The letters C. in Figure 1. & 4. represent a spring tongue being a portion of the
hinged joint connecting A. & B. for the purpose of holding the cover rigil.
The letters D. in Figures 2-3-4-5 represent a portion of the joint belonging
to B. the part D. pressing upon the spring tongue C. and connecting A. & 'B.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed declare that what I
claim is-
1. That by the use of the spring band mentioned above it can be inserted in the
bowl of almost any size pipe with the cover attached without any fitting or
alteration of the howl.
2. A metallic cover to be applied to tobacco pipes to prevent sparks from being
blown about whilst smoking during windy weather, or in the open air generally,
also to obviate the misance to others from dust being blown about whilst travelling
on the outside of vehicles and the like.

page_text: 3. That the invention can be applied to the bowl of any pipe in the manner
described and illustrated upon the drawings, Figures 1-2-3-4-5, and for the
purposes specified.
1905
WILLIAM PEARCE.