Improvements in Cover Plates or like Devices for the Bowls of Tobacco Pipes.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Cover Plates or like Devices for the Bowls of
Tobacco Pipes.
We, ROBERT SAMPSON JONES of 55 Stanley Road, Liverpool in the County
of Laucaster, Watchmaker and Jeweller and GEORGE FREDERICK WEBB of
65 Stanley Road, Liverpool aforesaid, Tobacconist, do hereby declare the nature
of this invention to be as follows:-
This invention relates to cover plates or similar devices for the bowls of tobacco
pipes and has for its object to provide a cover plate which can be firmly and
readily secured into the bowl of the pipe to prevent the annoyance of the smoke
and burnt tobacco blowing into the faces of other people, and whereby after
smoking, the bowl of the pipe may be completely closed and placed in the pocket
without being emptied and which will also have a neat appearance when used on
the pipe.
The invention consists of a disc made to fit as a plug into the pipe bowl and
pivoted centrally to a cover plate adapted to rest on top of the bowl.
On one side of the plug disc, we form or attach one or more rigid sharp
projections or teeth projecting laterally and on the other side provide similar teeth
or projections, but instead of making these latter rigid we make them movable by
forming them on a suitable strip or plate pivoted eccentrically on the plug disc, so
that they may be projected from the periphery of the disc or withdrawn to lie
flush with the said periphery.
A stud or pin is securely fastened eccentrically to the coverplate so as to engage
in a small eccentric slot provided for the purpose on the plate carrying the
adjustable teeth so that by turning the cover plate relatively to the plug plate to
which it is pivoted the movable teeth will be projected or drawn inward by the
stud or pin engaging in its slot as aforesaid. We also prefer to form a concentric
slot in the plug plate to allow free play to the cover plate stud.
The improved device may be carried loose in the pocket and be fitted to the
pipe when required by simply pressing the device onto the bowl so that the plug
disc enters the bowl, care being taken that the movable tooth or teeth is or are
first drawn inward. In this case the rigid tooth or teeth will be forced laterally
into the bowl, thus gripping the latter and then by turning the cover plate the
movable tooth or teeth on the opposite side of the plug disc will be projected
similarly into the bowl and the whole device thus firmly gripped into position.
To facilitate the turning of the cover plate we prefer to mill its edges, thus
affording a better grip for the fingers and thumb.
The cover plate is provided with a suitable number of perforations to admit air
for combustion, said air passing through the slots herein before mentioned in the
plug disc and plate into the bowl. Over the cover plate so perforated we may
attach another smaller plate pivotally connected thereto and having a stud or
thumb piece by which it may be rotated. This smaller plate is provided with
similar perforations to the cover plate which may be made to register with the
latter by rotating it when the pipe is to be smoked and which may be thrown out
of register therewith by turning the plate when the pipe is to be placed in the
pocket after smoking.

page_text: It will be readily understood that the plug disc may have all its teeth movable
instead of having some rigid.
Dated this 27th day of August 1895.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.
Improvements in Cover Plates or like Devices for the Bowls of
Tobacco Pipes.
We, ROBERT SAMPSON JONES of 55 Stanley Road, Liverpool in the County
of Lancaster, Watchmaker and Jeweller and GEORGE FREDERICK WEBB of
65 Stanley Road, Liverpool, aforesaid, Tobacconist 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 :-
This invention relates to cover plates or similar devices for the bowls of tobacco
pipes and has for its object to provide a cover plate which can be firmly and
readily secured into the bowl of the pipe to prevent the annoyance of the smoke
and burnt tobacco blowing into the faces of other people, and whereby after
smoking, the bowl of the pipe may be completely closed and placed in the pocket
without being emptied and which will also have a neat appearance when used on
the pipe.
The invention will be understood from the following description, reference being
had to the accompanying drawings, in which,-
Figure 1 is a cross section of our improved device ;
Figures 2 and 3 the same applied to a tobacco pipe, the teeth being shown in
Figure 2 released from the bowl and in Figure 3 engaged therewith.;
Figure 4 a top plan of the device,
Figure 5 an inverted plan thereof;
Figure 6 a plan of the plug disc A, with the cover disc B and distance piece C
removed therefrom, but shown in dotted lines.
The invention consists of a disc A, made to fit as a plug into the pipe bowl and
pivotted centrally at A' to a cover plate B adapted to rest on top of the bowl,
these two plates being separated by a distance piece C. On one side of the plug
disc A, we form or attach one or more rigid sharp projections or teeth Ď
projecting laterally, and on the other side provide similar teeth or projections E,
but instead of making these latter rigid we make them movable by forming them
on a suitable strip or plate e pivoted eccentrically at a on the plug disc A, so that
they may be projected from the periphery of the disc A or withdrawn to lie flush
with the said periphery. A stud or pin is securely fastened to the cover plate B
Bo as to engage in a small radial slot G provided for the purpose on the plate e
carrying the adjustable tooth E, so that by turning the cover plate B relatively to
the plug plate A to which it is pivoted at b, the movable tooth E will be projected
or drawn inward by the stud or pin F engaging in its slot as aforesaid. We also
prefer to form a concentric slot H in the plug plate A to confine the travel of the
cover plate stud F, thus allowing it a given play only. L is a washer over which
the pivot A' is rivetted to give the necessary binding action.
The improved device may be carried loose in the pocket and be fitted to the
pipe when required by simply pressing the device onto the bowl, so that the plug
disc A enters the bowl, care being taken that the movable tooth or teeth E is or
are first drawn inward. In this case the rigid tooth or teeth D will be forced
laterally into the bowl, thus gripping the latter and then by turning the cover
plate, B, the movable tooth or teeth E on the opposite side of the plug disc A will
be projected similarly into the bowl and the whole device thus firmly gripped into

page_text: position. To facilitate the turning of the cover plate B, we prefer to mill its
edges, thus affording a better grip for the fingers and thumb.
The cover plate B is provided with a suitable number of perforations B¹ to
admit air for combustion, said air passing through the holes A and slots herein-
before mentioned in the plug disc A, into the bowl. Over the cover plate B so
perforated, we may attach another smaller plate I pivotally connected thereto and
having a stud or thumb piece J by which it may be rotated. This smaller plate
is provided with similar perforations to the cover plate, which may be made to
register with the latter by rotating it when the pipe is to be smoked, and which
may be thrown out of register therewith by turning the plate when the pipe is to
be placed in the pocket after smoking.
It will be readily understood that the plug disc A may have all its teeth
movable instead of having some rigid.
Having now particularly described and ascertained the nature of our said inven--
tion and in what manner the same is to be performed, we declare that what we
claim is,
1. The improvement in cover plates or like devices for the bowls of tobacco.
pipes, consisting in a disc made to fit as a plug into the pipe bowl, having on one side,.
one or more rigid sharp projections or teeth projecting laterally, and on the other,
similar lateral teeth or projections formed on a plate pivoted eccentrically to the
plug disc, in combination with a cover plate pivoted centrally to the plug disc and
adapted to rest on top of the bowl, said cover plate having a stud or pin fastened
securely to it and adapted to engage in a small radial slot or hole provided for the
purpose in the plate which carries the movable teeth aforesaid, whereby by turning
the cover plate relatively to the plug plate to which it is pivoted, the movable
tooth or teeth will be projected laterally outward to engage the bowl, or inward to
release the same, substantially as described.
2. In a cover plate or like device for the bowls of tobacco pipes, having a disc
made to fit as a plug in the pipe bowl and a cover plate of larger diameter than
the plug pivoted centrally thereto and one or more teeth or projections so
combined and arranged that by rotating the cover plate relatively to the plug
disc, the said teeth can be at any time projected the required distance from the
as to lie flush therewith,.
periphery of the plug disc, or drawn inward so
substantially as and for the purpose described.
3. In a cover plate of the kind described, forming in the cover plate a
suitable number of perforations to admit air for combustion and providing in
combination therewith a smaller plate pivotally connected thereto and having a
stud by which it may be rotated, this smaller plate being provided with similar
perforations which may be made to register with those in the cover plate by
rotating it when the pipe is to be smoked, or which may be thrown out of register
therewith by turning the plate when the pipe is to be placed in the pocket after
smoking, substantially as described.
4. The general combined arrangement and construction of parts forming our
improved cover plate or like device for the bowls of tobacco pipes, substantially as
herein described and shown in the accompanying drawings, or any mere mechanical
equivalent thereof, such as arranging all the teeth so as to be movable instead of
having some of them rigid and some movable.
Dated this 1st day of Anril 1896.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.