Improvements in and relating to what are called or known as Dental Engines.
Year: 1893

page_text: Date of Application, 20th Mar., 1893
Complete Specification Left, 20th Dec., 1893-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to what are called or known as
Dental Engines.
I, ARTHUR GILLETT TAYLOR of 29 Poland Street London, W. Dental
Manufacturer, do hereby declare the nature of this invention to be as follows:-
My invention relates to what are known in mechanical dentistry as dental
buring engines briefly denominated dental engines. Hitherto a dental engine has
comprised or consisted of the following main elements namely:-Driving wheel
surmounted by the upper part of engine including ratchet head, flexible wrist,
hand piece &c.
Now in order to simplify and reduce the cost and construction of dental buring
engines, I in accordance with my present invention, dispense with the upper parts
of the engine above enumerated, with the exception of the handpiece, and I
construct my improved simplyfied dental engine in the following manner, that is
to say-The driving cord from the usual grooved driving wheel is conducted to
two small pulleys arranged on a short stem piece above the driving wheel, and
thence to a small pulley with which the stem of the handpiece is provided.
It will be found in practice that apart from the simplified cost of con-
struction, dental engines constructed in accordance with my invention will possess
the following amongst other additional advantages namely —Great steadiness
of rotation, less friction, and the avoidance of "backlash," possessing the advantage
also of great portability.
Dated this 17th day of March 1802
JAMES
STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicant.
Improvements in and relating to what are called or known as
Dental Engines.
I, ARTHUR GILLETT TAYLOR of 29 Poland Street, London, W. Dental
Manufacturer, 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 :-
My invention relates to what are known in mechanical dentistry as dental
burring engines briefly denominated dental engines. Ilitherto a dental engine has
comprised or consisted of the following main elements, riz:-Driving wheel
surmounted by the upper part of engine including ratchet head, flexible wrist,
hand piece &c.
Now in accordance with my invention a general elevational view of which is
shewn in Fig. 1 of the accompanying sheet of drawings I dispense with the above
enumerated upper parts of the engine with the exception of the hand piece a, and
I construct my improved simplified dental engine in the following manner; that
is to say-The driving cord from the usual grooved driving wheel is first
conducted to two small pulleys d d thence to two other small pulleys e, e and after-
wards to the pulley ƒ fitted in the hand piece a, which pulley, drives the burring

page_text: tool 9. The above referred to pulleys are mounted upon an upright standard 4
(seen only in Figure 2) secured to the top of the dental engine. At the extreme
end of the standard I provide a loop for holding the hand piece and burring tool
when not in use (as in Fig. 1).
Figure 2 is a detached view of the upper part of the device above line A B
Fig. 1 shewing the hand piece with burring tool in position assumed when the device
is being used.
It will be found in practice that apart from the simplifiel cost of construction,
dental engines constructed in accordance with my invention will possess the
following amongst other additional advantages, riz.-The hand piece, with the
burring tool, being driven direct from the driving wheel, can be used at any angle
from the dental engine; I am also able to ensure great steadiness of rotation, less
friction and the avoidance of "blacklash"; with the further advantage of great
portability.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is,
1. In dental engines the employment of the upright standard h, and pulleys d, d; 1, e,
and substantially as above described.
2. Improvements in dental engines substantially as above described.
Dad his with to 1012
JAMES
STEVENSON,
1, Furnival Street, E.C., Agent for Applicant.