Year: 1899

page_text: Date of Application, 26th July, 1899
Complete Specification Left, 8th Aug., 1899-Accepted, 9th Sept., 1899
improvemen
I, WILLIAM PECK, F.R.A.S., F.R.S.E., Astronomer to the City of Edinburgh,
City Observatory, Calton Hill, Edinburgh, North Britain, do hereby declare the
nature of this invention to be as follows:
My invention has for its object to provide a clutch in which the engagement
is maintained without the use of a pressure exerting device which is stationary
and which therefore causes objectionable friction. According to my invention
the pressure requisite to maintain the clutch in engagement is applied by means
of springs which are carried by and rotate with the clutch. This is conveniently
effected by connecting the inner portion of the clutch, which can be moved longi-
tudinally on the shaft, with a disc, or arms, carried by, and capable of rotating on,
the shaft; but incapable of longitudinal movement thereon. The said inner part
of the clutch and the said disc, or arms, are engaged together so as to allow of
the inner part of the clutch being moved longitudinally independently of the
said disc, or arms, but so that the said inner part of the clutch and the said disc,
or arms, rotate together. The inner part of the clutch is also connected with
the said disc, or arms, by pins, or bolts, fixed to the said discs, or arms, and
passing through holes, or guides, in the inner part of the clutch, and provided
with nuts, or beads, between which, and the inner part of the clutch, springs are
interposed which, when the clutch is in engagement exert such pressure on the
inner portion of the clutch, as to maintain its engagement. As these pressure
exerting devices revolve with the clutch the aforesaid objectionable friction does
not exist. The portion of the clutch can be separated in any convenient way,
for example, by a lever engaging with a collar on the inner part of clutch, the
inner part when moved longitudinally to effect this disengagement compressing
the springs owing to the aforesaid disc, or arms, being incapable of longitudinal
movement.

page_text: 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 has for its object to provide a clutch in which the engagement
is maintained without the use of a pressure exerting device which is stationary
and which therefore causes objectionable friction. According to my invention
the pressure requisite to maintain the clutch in engagement is applied by means
of springs which are carried by and rotate with the clutch. This is conveniently
effected as hereinafter described with reference to the accompanying drawings
but I do not limit myself to the precise details illustrated.
Figure 1 is a longitudinal section and Figure 2 is a transverse section on the
line 1, 2, Figure 1. A A² are the two parts to which the respective parts of the
clutch B and 132 are connected as usual, or in any convenient manner. The inner
portion B of the clutch, which can be moved longitudinally on the part A2, is
connected with a disc C, or arms, carried by, and capable of rotating on the
shaft A; but incapable of longitudinal movement thereon it being confined be-
tween the part B and the shoulder a. The said inner part B2 of the clutch and
the said disc C, or arms, are engaged together so as to allow of the inner part B2
of the clutch being moved longitudinally, but so that the said inner part B of the
clutch and the said disc C, or arms, rotate together. This is shewn as being
effected, in the arrangement illustrated, by recesses c in the disc C, engaging
with ribs on the inner part 132 of the clutch. The inner part 12 of the clutch
is also connected with the said disc, C, or arms, by pins, or bolts, & fixed to the
said disc C, or arms, and passing through holes, or guides in the bosses 62 in the
inner part B of the clutch, and provided with nuts, or heads, between which,
and the inner part of the clutch, springs D) are interposed which, when the clutch
is in engagement exert such pressure on the inner portion 13 of the clutch, as to
maintain its engagement with the other portion B. As these pressure exerting
devices revolve with the clutch the aforesaid objectionable friction does not exist.
The portions of the clutch can be separated in any convenient way, for example
by a lever engaging with a collar 13 on the inner part 132 of clutch the inner part
when moved longitudinally to effect this disengagement compressing the springs D
owing to the disc C, or armis, being incapable of longitudnal movement.
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
1. A clutch in which the pressure requisite to maintain the clutch in engage-
ment is applied by means of a spring pressing arrangement carried by, and
rotating with, the clutch,
2. A clutch constructed substantially as herein before described and illustrated
in the accompanying drawings.
E