A Pneumatic or Water Cushion for Head-rests of Shaving Chairs and Dentists' Operating Chairs.
Year: 1893

page_text: Date of Application, 25th July, 1893
Complete Specification Left, 25th Apr., 1894-Accepted, 30th June, 1894
TRUVIDIONALNIMUIFICATION
A Pneumatic or Water Cushion for Head-rests of Shaving Chairs
and Dentists' Operating Chairs.
THOMAS HUDSON WEM Hairdresser Lower Priory Birmingham do hereby
declare the nature of this invention to be as follows:-
A small cushion of size and shape to meet the respective peculiarities of the
aforesaid head-rests, and dentists' operating chairs. The aforesaid cushion consists
of an air, or water tight bag composed of india rubber or any suitable substance
that can be made air tight, and fitted with one small metallic pipe, and valve for
inflating. The aforesaid cushion may be affixed to the said shaving chair head
rests, and dentists' operating chairs, by means of straps, or laces.
Dated this 24th day of July 1893.
THOMAS HUDSON WEM.
COMPLETE SPECIFICATION.
A Pneumatic or Water Cushion for Head-rests of Shaving Chairs
and Dentists' Operating Chairs.
I, THOMAS HUDSON WEM, of Lower Priory, in the City of Birmingham,
Hairdresser, 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 consists of the hereindescribed new or improved pneumatic or
water cushion for head rests of shaving chairs, and for dentists' operating chairs.
My said invention consists of a small air tight or water tight bag forming a cushion
composed of indiarubber or any other suitable substance that can be made air
tight and made of a shape and size to suit the head rest to which the said cushion
is fixed; the said cushion being provided with a small pipe or valve for inflating
the same with air or water.
In order that my invention may be well understood I have on the accompanying
drawing illustrated the same as applied to a head rest for shaving chairs.
Fig. 1 shews my invention fixed to the head rest and shaving chair ready for use;
Fig. 2 is a plan, Fig. 3 is a front elevation and Fig. 4 is a sectional side elevation
of the said head rest on an enlarged scale and Fig. 5 shews separately the inner
portion of the air bag of the said head rest;
Fig. 6 is a back elevation and Fig. 7 is a sectional side elevation of the said head
rest with the outer portion of the air inflated bag fixed to the head rest proper by
means of laces instead of being nailed thereon as in the previous example shewn by
Figs. 1, 2, 3 and 4.
A is the usual back part of the head rest preferably made of wood fixed to the
adjustable stem B by the metal bracket C or by any other convenient and well known
means. The air tight or water tight back forming the cushion which is fixed to
the head rest A is made in two parts namely an inner part or indiarubber back
proper D¹ and an outer covering part D². The inner part D¹ is made of the shape
shewn by Fig. 5 to form a comfortable rest for the head and to conform with the
curved shape of the wooden back A of the head rest. e is the valve for inflating
the back D' this valve passing through a hole a' in the back part A this valve e

page_text: being similar to those which are well known and used for the pneumatic tyres of
bicycles. The said air tight or water tight bag forming the cushion is fixed to the
back part A of the head rest by the outer portion D³ (which is by preference made
of leather moulded to the required form) being laced over the back of the part A,
-as shewn in Figs. 6 and 7, or by being fixed to the back A by small brass headed
or other nails f, as shewn by Figs. 1, 2, 3 and 4. Or straps may be substituted
for the laces in Figs. 6 and 7 for fixing the outer covering D³ to the back part A.
It will be seen that the leather or other outer covering D' encloses the india-
rubber part D and that when the latter is inflated a very soft and pliable cushion
or head rest is formed. It will be seen that my invention can be similarly applied
to head rests of other forms than shewn either for shaving chairs or for dentists'
operating chairs.
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
In combination with the head rest of a shaving chair or of a dentists' operating
chair, the employment of an air tight or water tight cushion constructed and fixed
thereto in any of the several ways substantially as hereinbefore described and
illustrated by the accompanying drawing.
Dated this 24th day of April 1894.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.