Improvements in Pulleys and Drums.
Year: 1892

page_text: Date of Application, 9th Feb., 1892
Complete Specification Left, 31st Oct., 1892-Accepted, 3rd Dec., 1892
PROVISIONAL SIMULETUATION.
Improvements in Pulleys and Drums.
I, DAVID TAYLOR, of 3 Parker's Court, off King Street, Dundee, in the County
of Forfar, N.B. Calender Worker, do hereby declare the nature of this invention
to be as follows:-
This invention relates to pulleys and drums employed in transmitting power by
means of belts, its object being to increase the friction between the said pulleys or
drums and the belts, and so reduce wear and tear of journals, shafts, and belts by
lessening the necessary tension.
In carrying out my invention, I cover the pulleys with india-rubber, said pulleys
being either turned, or simply left rough where the said rubber is laid on.
To further increase the friction between the rubber covering and the pulley,
grooves or facets may be cast in the face of the said pulley, and the rubber then
laid over.
Dated this 6th day of February 1892.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Pulleys and Drums.
I, DAVID TAYLOR, of 3 Parker's Court, off King Street, Dundee, in the County
of Forfar, N.B. Calender Worker, 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 pulleys and drums employed in transmitting power by
means of belts, its object being to increase the friction between the said pulleys or
drums and the belts, and so reduce wear and tear of journals, shafts, and belts by
lessening the necessary tension.
The accompanying sheet of explanatory drawings illustrates the method of
carrying out my invention.
Figures 1. and 2. represent respectively a side elevation and a section at A. A.
(Figure 1.) of a pulley or drum according to one modification and Figures 3.
and 4. a side elevation and a part section at B. B. (Figure 3.) of such pulley or
drum according to another modification.
In these drawings the same reference numerals are used to mark the same or
like parts wherever they are repeated.
In the modification illustrated by Figures 1. and 2, I cover the pulleys 5. with
india-rubber 6, said pulleys being either turned, or simply left rough where the
said rubber is laid on. The rubber may be applied in any known way, and it
should be sufficiently hard to endure the varying pressure due to the possible
surging of the belt in certain circumstances.
To further increase the friction between the rubber covering 6. and the pulley 5,
grooves or facets 7. may be cast in the face of the said pulley and. the rubber then
laid over, this modification being illustrated by Figures 3. and 4.
The pulleys or drums are used as follows:-A drum is placed on the main or
other driving shaft and a suitable pulley or pulleys on the machine to be driven
and the power transmitted by a belt in the usual way.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I wish it to be
understood that I am aware of rubber covered pulleys having been used in
connection with band-saws for cutting stones-the steel bands running on pulleys
covered with rubber in a particular way-and I lay no claim to such an application,
but, I declare that what I claim is :-
(1.) The use of india-rubber for covering pulleys and drums, substantially as
and for the purpose hereinbefore described and illustrated by Figures 1. and 2.
(2.) The use of india-rubber for covering pulleys and drums, substantially as
and for the purpose hereinbefore described and illustrated by Figures 3. and 4.
Dated this 29th day of October 1892.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.