Improvements in Means for Transmitting Motion from Electric Motors to other Machinery.
Year: 1898

page_text: Date of Application, 13th Aug., 1898
Complete Specification Left, 18th Apr., 1899-Accepted, 20th May,
1899
PROVISIONAL SPECIFICATION.
Improvements in Means for Transmitting Motion from Electric
Motors to other Machinery.
I, WILLIAM GEIPEL, of 68, Victoria Street, in the City of Westminster,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has reference to improvements in means for transmitting motion
from electric motors to other machinery and has for object to enable belt gearing
to be employed as speed reducing gear instead of spur or worm gearing without
greatly increasing the space occupied.
For this purpose between the motor shaft and the shaft to be driven, both of
which are fitted with belt pulleys of suitable sizes, there is interposed a counter-
shaft which has fixed thereon a couple of belt pulleys and is geared to the motor
shaft and the driven shaft by a couple of short belts, said shaft being capable
of being moved towards or away from either the motor shaft or the driven shaft
or both so as to slacken or tighten either or both the belts gearing it to the said
motor shaft and driven shaft respectively. By this means the load can be readily
taken off the motor when starting and afterwards he gradually put on again.
In one construction the countershaft is carried in a bearing or bearings attached
to a pivoted arm or lever that can be rocked or swung about its pivot towards
or away from the motor shaft, and it may be simultaneously towards or away
from the driven shaft, by means of a rotatable screw that is longitudinally fixed
and which works through a trunnion nut carried by said pivoted arm.
guides are provided to prevent the belts coming off their pulleys. Means may he
provided whereby an equal pull upon each of the two belts may be ensured, for
instance, the countershaft bearing or bearings may be linked to the pivoted arm
or lever. In one arrangement a long single bearing is formed in one with a cen-
trally arranged link that is attached by a transverse pivot to an adjustable slide
fixed to the pivoted arm or lever.
In place of a rotatable screw other means may be employed
pivoted arm or lever, or the lever may be moved directly by hand
any desired position. For instance, a notched quadrant, or a
clamping screw may be provided.
Belt
for moving the
and secured in
quadrant with
For the
the Applicant,
W. LLOYD WISE.
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.

page_text: Improvements in Means for transmitting Motion from Electric
Motors to other Machinery.
I, WILLIAM GEIPEL, of 68," Victoria Street, in the City of Westminster,
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:-
This invention has reference to improvements in means for transmitting motion
from electric motors to other machinery and has for object to enable belt gearing
to be employed as speed reducing gear instead of spur or worm gearing without
greatly increasing the space occupied.
For this purpose, between the motor shaft and the shaft to be driven, both of
which are fitted with belt pulleys of suitable sizes, there is interposed a counter-
shaft which has fixed thereon a couple of belt pulleys and is geared to the motor
shaft and the driven shaft by a couple of short belts, the said shaft being capable
of being moved towards or away from either the motor shaft or the driven shaft
or both so as to slacken or tighten either or both the belts gearing it to the said
motor shaft and driven shaft respectively. By this means the load can be readily
taken off the motor when starting and afterwards can be gradually put on again.
In the accompanying illustrative drawings, Fig. 1 is a side elevation of a motor
provided with means for transmitting motion therefrom according to this inven-
tion; and Fig. 2 is a front view of such means.
1 is the motor shaft, 2 the shaft to be driven therefrom, and 3 the counter-
shaft which is provided at its ends with belt pulleys 3 and 3b. 4 is a belt pass-
ing around the pulley 3" and a pulley 1" on the motor shaft and 5 is another
belt passing around the pulley 3b and a pulley 2 on the driven shaft. The counter-
shaft 3 is carried in a long bearing 6 carried by a slide 7 attached to and capable
of lengthwise adjustment along a pivoted arm or lever 8 by means of a longitu-
dinally fixed screw 9 working in a nut 10 carried by the slide; the arm or lever 8
can be rocked or swung about its pivot 8ª towards or away from the motor shaft 1
and simultaneously towards or away from the driven shaft 2 by means of a rota-
table screw 11 that is longitudinally fixed in a thrust block 11 and which works
through a trunnion nut 12 carried by the pivoted arm. Belt guides such as 13
are provided where necessary to prevent the belts coming off their pulleys. Instead
of, or in addition to, the rotatable screw 11, a notched quadrant 14 (shown in
dotted lines) may be fixed to the base on which the lever 8 is mounted, said lever
carrying a trigger 15 adapted to be operated by a hand lever 10 and so arranged
as to engage said quadrant so as to secure the lever 8 in position. 17 is a handle
whereby the lever 8 can be held when the trigger is disengaged. By means of
the slide 7 an equal pull can be put upon each of the two belts 4 and 5 or the
tension on the two belts can be adjusted to suit the difference in strain on the
said belts 4 and 5 which is due to their transmitting the same power at different
speeds.
Figs. 3 and 4 illustrate a modified arrangement in which the countershaft bear-
ing is linked to the pivoted arm or lever 8. In the arrangement shewn the long
single bearing 6 is formed in one with a centrally arranged link 18 that is attached
by a transverse pivot 19 to the adjustable slide 7 carried by the pivoted arm or
lever 8. The screw 9 and nut 10, which are in these figures shown in dotted
lines, may be dispensed with, the slide 7 being instead fitted with a clamping
bolt whereby it can be fixed in any desired position after having been adjusted
by hand lengthwise of the arm or lever 8. In place of the notched quadrant and

page_text: trigger shown in Figs. 1 and 2 a slotted quadrant 20 with clamping screw 20
and nut 20 may be provided as shown in dotted lines in Figs. 3 and 4 and in
place of a long single bearing 6 shorter double bearings may be employed if
desired.
In some cases fast and loose pulleys or friction clutch pulleys, may be used
in place of the fixed pulleys.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:
1. In means for transmitting motion from electric motors to other machinery,
the combination with the motor shaft and the shaft to be driven of a counter-
shaft having fixed thereon a couple of belt pulleys and geared to the said shafts
by belts and means for moving the said countershaft towards or away from either
the motor shaft or the driven shaft or both so as to slacken or tighten either or
both the belts, substantially as described.
2. Means for transmitting motion from electric motors to other machinery of
the kind specified in the preceding claim, constructed, arranged and operating
substantially as described with reference to and shown in Figs. 1 and 2 and in
Figs. 3 and 4 respectively of the drawings annexed.
Dated this
day of
189
"
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.