Improvements in Means for Transmitting Power from one Shaft to another
Year: 1897

page_text: "
Improvements in Means for Transmitting Power from one Shaft
to another."
I, CHAIMSONOVITZ PROSPER ELIESON, of Broad Street Avenue, in the City of
London, Electrical Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to, power transmitters of the kind described in the specifica-
tion of my former application No. 10861 of 1896 wherein provision is made for
affording a positive grip between the transmitter and a pulley on one shaft and a
frictional grip between the transmitter and the pulley on the other shaft.
According to my present invention I employ a chain transmitter which engages
with a sprocket wheel upon one shaft. In order that this chain shall frictionally
engage with the pulley upon the other shaft I provide it with a series of projecting
pins and I arrange around the pulley a yielding surface such as leather against which
the pins can grip but which will admit of the pins slipping when necessary.
I sometimes apply to the pins gripping blocks or pieces which will bear frictionally
upon the pulley and the leather or the like around the said pulley can then be
dispensed with.
Dated the 10th don of February 1907
"Improvements in Means for Transmitting Power from one Shaft
to another."
I, CHAIMSONOVITZ PROSPER ELIESON, of Broad Street Avenue, in the City of London,
Electrical Engineer, 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 power transmitters of the kind described in the specifica-
tion of my former Patent No. 10861 of 1896 wherein provision is made for affording a
positive grip between the transmitter and a pulley on one shaft and a frictional grip
between the transmitter and the pulley on the other shaft.
According to my present invention I employ a chain transmitter which engages
with a sprocket wheel upon the driving shaft. In order that this chain shall
frictionally engage with the pulley upon the driven shaft I provide it with a series of

page_text: projecting pins and I arrange around the pulley a yielding surface such as leather
against which the pins can grip but which will admit of the pins slipping when
necessary.
To enable my invention to be fully understood I will describe the same by reference
to the accompanying drawing, in which :-
Figure 1 is a side elevation illustrating the arrangement of my improved driving
mechanism:
Figure 2 is a plan view of the driven wheel or pulley:
Figure 3 is a view of a piece of the driving chain drawn to a larger scale than
figure 1:
Figure 4 is a section on the line 4—4 figure 1 drawn to an enlarged scale; and,
Figure 5 is a section on the line 5-5 figure 1 drawn to the same scale:
Figures 6 and 7 are a side elevation and a plan respectively illustrating a slight
modification.
a is my chain transmitter, which, as shewn, is composed of a series of links b, b
and blocks c, e in a well known manner and d, d are the pins which are carried by
the said chain. These pins may be fixed to the links in any suitable manner or
formed upon the side plates or they may be formed as shewn in the drawing by
making certain of the pins which unite the links b, b and blocks c, c of such a
length that they project laterally as shewn in figure 3.
e is the sprocket driving wheel upon which the links of the chain run, as is clearly
shewn by reference to figure 4, and f is the driven wheel; g, g are strips of leather or
other yielding material with which the pins d, d, come into contact, the said strips
being fixed around the periphery of the wheelf with a space between them to
receive the links of the chain (as will be clearly understood by reference to figure 5)
so that the said links will not bear against the surface of the pulley and thus
prevent the pins d, d from making good contact with the strips g, g.
I sometimes modify the construction hereinbefore described in the manner shewn
in figures 6 and 7 by dispensing with the leather strips g, g upon the pulley ƒ and
applying to the pins d, gripping blocks or pieces h, h which will bear frictionally
upon the pulley.
i, figure 1 is an. idle sprocket wheel which I sometimes use in connection with my
transmitter for regulating the tension of the saine and its consequent grip upon
the pulley f.
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
claim is :-
1. In driving mechanism of the kind wherein motion is transmitted from one
shaft to another through the medium of a chain and wherein the said chain is in
positive connection with the driving pulley and in frictional connection with the
driven pulley, providing the said chain with lateral pins such as d, d and attaching
to the surface of the driven pulley strips such as g of yielding material, substantially
as described.
2. The modification of my invention wherein the lateral pins. upon the driving
chain carry blocks or pieces which bear frictionally upon the driven pulley,
substantially as described.
G. F. REDFERN & Co.
4, South Street, Finsbury, London, Agents for the Applicant..