Improvements in connection with the Leather Buckets, Suckers, or Washers for Inflators, Syringes, Oil Cans, and the like.
Year: 1897

page_text: Date of Application, 8th Dec., 1897
Complete Specification Left, 25th Aug., 1898-Accepted, 19th Nov., 1898
Improvements in connection with the Leather Buckets, Suckers, or
Washers for Inflators, Syringes, Oil Cans, and the like.
I, GEORGE HARRY WILLIAM DAVIS, of Messrs, G. H. W. Davis & Co., Edgbaston
Works, Gough Road, Birmingham, in the County of Warwick, Manufacturer,
do hereby declare the nature of my said invention to be as follows;-
My invention has for its object improvements in connection with the leather
bracket sucker or washer for inflators, syringes, oil cans and the like by which
I am enabled to adjust or expand the same when worn so as to make it accurately
fit the cylinder or tube in which it works when forcing water, oil or other liquid out
of a vessel or cylinder.
In carrying my invention into practice I thicken or enlarge the end of
the piston to which the sucker, washer, or leather buckets is attached and on this
thickened portion I cut a screw thread. then place loosely onto the spindle a
conical shaped cup or its equivalent the end of which fits into the sucker, washer,
or leather bucket and a nut or washer is afterwards screwed onto the screw threaded
portion of the spindle so that when the sucker becomes worn through constant use
it can be adjusted or expanded by screwing up the nut or washer which forces the
conical cup or its equivalent into the sucker thus expanding its sides and making it
accurately fit the interior of the cylinder or tube in which it operates when forcing
water, oil or other liquid out of a vessel or cylinder. In some cases I may screw
the conical cup or its equivalent onto the enlarged portion of the spindle and thus
dispense with the washer when required.
GEORGE BARKER,
Agent for Applicant, 77, Colmore Row, Birminghami.
Improvements in connection with the Leather Buckets, Suckers, or .
Washers for Inflators, Syringes, Oil Cans, and the like.
I, GEORGE HARRY WILLIAM DAVIS, of Messrs. G. H. W. Davis, & Co., Edgbaston
Works, Gough Road, Birmingham, in the County of Warwick, Manufacturer,
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:-
My invention has for its objects improvements in connection with the leather

page_text: bucket sucker or washer for inflators, syringes, oil cans and the like by which
I am enabled to adjust or expand the same when worn so as to make it accurately
fit the cylinder or tube in which it works when forcing air, water, oil or other
liquid out of a vessel or cylinder.
In carrying my invention into practice I preferably thicken or enlarge the end of
the piston to which the sucker washer, or leather bucket is attached and on this
thickened portion I cut a screw thread. I then place loosely onto the spindle a
conical shaped cup or its equivalent the end of which fits into the sucker, washer
or leather bucket and a nut or washer is afterwards screwed onto the screw threaded
portion of the spindle so that when the sucker becomes worn through constant use
it can be adjusted or expanded by screwing up the nut or washer which forces the
conical cup or its equivalent into the sucker thus expanding its sides and making
it accurately fit the interior of the cylinder or tube in which it operates_when
forcing water, oil or other liquid out of a vessel or cylinder, In some cases I may
screw the conical cup or its equivalent onto the enlarged portion of the spindle
and thus dispense with the washer when required.
In order that my invention may be more clearly understood and easily carried
into practical effect I have appended hereunto a double sized sheets of drawings
upon which I have illustrated examples of my improved leather bucket or sucker.
Figure 1 is a part sectional view shewing my leather bucket sucker or washer
with its piston fitted in position in a cylinder.
Figure 2 is an end view of the leather bucker sucker or washer.
Figure. 3 is a view shewing the parts of the leather bucket sucker or washer
separated.
Figure 4 is a view of my leather bucket sucker or washer suitable for forcing
air out of a pump or the like shewing the expanding cup partially adjusted.
Figure 5 is a sectional view shewing a modified form of adjusting the expand-
ing cup.
The
In carrying my invention into practice I preferably thicken or enlarge that part
of the piston P to which the leather bucket sucker, or washer A with its metal
plates or washers a¹ is fixed and on this thickened portion I cut or form a screw
thread. I then place loosely onto the piston or spindle the conical shaped cup B
or its equivalent as shewn at Figure 3 which fits into the leather bucket A.
wing or other nut or washer D is afterwards screwed onto the threaded portion of
the piston or spindle against the interior of the cup B as clearly shewn at Figure 2,
so that when the sucker becomes worn through constant use it can be adjusted or
expanded by screwing up the nut or washer D which forces the conical cup B or
its equivalent further into the sucker or bucket A thus expanding its sides and
making it accurately fit the interior of the cylinder or tube E in which it operates.
In the modification as shewn at Figure 5 I dispense with the nut or washer D and
from the collar b¹ in the centre of the cup B which is drilled and tapped so as to
screw onto the threaded portion of the piston P. It will thus be seen that this
cup can be adjusted by screwing it further onto the spindle thereby expanding
the sides of the leather bucket when required. When using my leather bucket,
sucker or washer for forcing air out of a cylinder or tube for inflating or other pur-
poses it is attached to the end of the spindle or piston as shewn at Figure 4.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
CLAIMS.
First: The improvements in connection with the leather bucket sucker or
washer for inflators, syringes oil cans and the like consisting essentially in a conical
cup such as B or its equivalent for expanding the sides of the bucket sucker, or
washer in the manner substantially as herein set forth and as shewn upon the
accompanying sheet of drawings.

page_text: Second: Adjusting or expanding the sides of leather buckets, suckers or
washers such as A or their equivalents by an adjustable conical cup such as B or
its equivalent in the manner substantially as herein set forth and as shewn upon
the drawings.
GEORGE HARRY WILLIAM DAVIS.
By George Barker,
Fellow of The Chartered Institute of Patents Agents.
Agent for Applicant, 77, Colmore Row, Birmingham.