Improvements in Dentures and in Suction Discs used in Combination therewith.
Year: 1898

page_text: Date of Application, 5th Sept., 1898-Accepted, 5th Nov., 1898
COMPLETE SPECIFICATION.
Improvements in Dentures and in Suction Discs used in Combination
therewith.
I, THOMAS SLACK, of No. 8, Wellgate, Rotherham, Dental Surgeon, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following state-
ment: :-
This invention relates to dentures or artificial palates used in dentistry with
a moulded india-rubber suction disc added as an auxiliary; it has for its obiect
to obtain greater efficiency and comfort to the wearer, also a readier method of
attaching, renewing or replacing said discs when desirable.
I will now fully describe the said invention by reference to the accompanying
drawings made to an enlarged scale in which Fig. 1, is a plan view of an upper
denture complete. Fig. 2, shows a section of the same on line a, y, of Fig. 1,
omitting suction disc. Fig. 3, is a similar section illustrating method of using
metallic stud to retain disc. Fig. 4, represents my improved suction disc. Fig. 5
shows paper washers to be used in modelling denture Fig. 2. Fig. 6, the paper discs
to form a denture with metallic stud as Fig. 3.
In practice I proceed as follows: with the raw material of the palate A when
forming on the model palate, I arrange a series of paper or cardboard washers
or discs, preferably faced with tinfoil as B, B1, B2, Figs. 6 and 5, when the latter
are used they form not only a cavity but also a head C, with a neck D, to receive
and hold the suction disc E. The flask is then screwed up and the denture is
indurated as is well understood; the paper washers being removed reveal the
sectional form seen in Fig. 2, or when a metal stud, d, and head, c, is preferred,
I insert such parts with the corresponding paper discs B, Fig. 6 and thereby pro-
duce a denture as per Fig. 3, also complete in one operation.
In like manner I form in suitable moulds from practically pure rubber suction
disc E, having a central hole in to suit neck D, or stud pin, d; also a rounded
projection or bead on one side to make contact with the natural palate. The said
disc E in either case is sprung or stretched over the head C, or e, which effectually
retain it in position. Whenever such disc requires renewal it may be slipped off
and another disc be substituted by any unskilled person.
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;-
1st. In making dentures or artificial palates the formation, or fixing, at the same
operation of a head with neck, or stud pin for the retention of an auxiliary suction
disc, substantially as described.
2nd. The formation in moulds of a rubber washer having a rounded bead pro-

page_text: jecting from one side and, a central opening corresponding to neck or pin of
denture, substantially as described.
Brd. The combination and use of an artificial palate with a suction disc both con-
structed or used substantially as described and illustrated.
Dated this 3rd day of September 1898.
ISAAC BECK, F.S.P.A.,
Agent for the Applicant,
Haymarket Chambers, 17, Haymarket, Sheffield.
ISAAC BECK, F.S.P.A.,
Agent for the Applicant,
Haymarket Chambers, 17, Haymarket, Sheffield.