Improvements in High Speed Friction Driving Apparatus for Portable Machines.
Year: 1890

page_text: Date of Application, 18th July, 1890-Accepted, 23rd Aug., 1890
COMPLETE SPECIFICATION.
[Communicated from abroad by GEORGE WALTER BLANKS, BERNARD LEFEBURE,
and FREDERICK JOHN BIRD, of Sydney, New South Wales, Engineers.]
Improvements in High Speed Friction Driving Apparatus for
Portable Machines.
I HENRY MOY THOMAS of 9 and 10 Southampton Buildings London in the County
of Middlesex Patent Agent, 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 apparatus for giving motion to machines which require
great speed and which are movable such as sheep shearing machines drilling machines
and polishing machines.
The appliances now in use for this purpose especially for sheep shearing machines
are not suitable as they are cumbersome and expensive and the connections from the
driving gear to the machines in operation have hitherto been made flexible and encased
in steel coils canvas or india rubber tubes against the inside of which the flexible con-
nections are continually rubbing consequently the flexible parts have become heated
so much so as to necessitate frequent renewals of such parts and owing to the tendency
of the flexible connection to straighten itself more power is required to drive it and a
great strain is put upon the operator's arm moreover only one machine has been
attached to one bracket which has necessitated expensive shafting and bearings.
In my invention the brackets are so constructed that one, two, three or four or any
reasonable number of machines may be operated from each bracket which is easily
attached either vertically or horizontally to any convenient post or rafter or beam and
to obviate the excessive heating of the connections from the driving gear to the
machines in operation the connections are made rigid with joints in their length and
are encased in tubes of brass or any other suitable material with a ferrule in their
length to enable the machines in operation to be moved in any direction in a hori-
zontal plane, the points where the rigid connection touches the outer casing being at
each end of the tubes, the tubes are filled with water or oil or any other lubricant the
joints are arranged in the rigid connections to enable the machine being operated to
be turned in any direction.
Figure 18s a plan.
Fig. 3.is a cross section at Z Z.
Figure 4 is an enlarged cross section of the joints and tubes.
Figure 5 is an enlarged front section of the joints and tubes.
Figure 6 is a diagramatic view shewing two brackets in operation from the same
driving gear.
This apparatus consists of a bracket A, of cast iron or any other suitable material
which is fastened in any convenient position to the post a by means of the bolts bb;
on the centre bolt c and capable of revolving freely on it is fitted the friction wheel B
of cast iron, wrought iron wood or any other suitable material to which is rigidly
attached the grooved pulley C, on the bracket A are the bosses dd through which
pass the pins e e on which are loosely fitted the guide pulleys ff; on the bracket A
are the bosses 9 g and the lugs h h. In front of the bracket A is the plate D of cast
iron wrought iron or any other suitable material. Between the bracket A and the
front plate D are pivotted the roller brackets j. k. l. m on the bolts n. o. p. q
respectively. On the spindle in the roller bracket jor k or 1 or m is fitted the
friction pulley S-the-spindler revolves in the bearings t and u the bearing u of brass
Pine 81

page_text: .
wheel w.
bronze or any other suitable material terminates in a cup and is capable of rotary
movement. At the outside end of the spindler is rigidly attached the toothed bevel
Over the cup fits another cup of bronze or other suitable material with
bearing faces in contact with the cup vat y y a pin is centred through the cups v
and and held in position by the screws a* and 6*. On the pincapable of revolving
freely on it, is fitted the toothed bevel wheel c✶ on the cup is the boss d* through
which passes the rigid rod e* of steel or iron or any other suitable material to which
inside the cup is rigidly attached the toothed bevel wheel which gears with the
toothed bevel wheel c*. At the lower end of the rigid rod e* is rigidly attached the
toothed bevel wheel 9* in the cup h✶ the bevel wheel j* revolves freely on the pin k
and gears with the bevel wheel g* and the toothed bevel wheel * which is firmly
attached to the rigid rod m* which passes through the boss n* on the cup o*. The
cups hand o* are centred on the pin k* and are held in position by the screws q*
and *.
The tube & of brass or any other suitable material eneases the rigid rod e* and is
fastened at each end at t* and u* to the cups z and h*.
บ
The screw is for charging the tube with water or oil or some other lubricant.
A ferrule d' is secured at the end of the tube s* and inserted in the boss of the cup h*,
a slot e¹ is cut horizontally in the ferrule d' and a pin f' inserted through the boss
on the cup h* into the slot e¹ to allow cup joint 2 rotary movement in a horizontal
plane.
*
A tube w similar to the tube s* may encase the rigid rod m* at the lower end of
which is attached the machine * to be operated.
The roller brackets j. k. l. and m with the friction pulleys s may be thrown in and
out of action by means of the levers y* * a¹ and 6¹ respectively, any one or all of
which may be in action at the same time. A rope passes under the grooved
pulley Cand over the guide pulleys ff which rope is connected with some source of
power; instead of using grooved pulleys and rope for giving motion to the friction
pulleys I may use flat pulleys and belting. The friction wheel B and friction
pulleys s may be grooved instead of flat.
Motion is communicated to the friction wheel B and the grooved pulley (by means
of the rope c¹ from any source of power and is transmitted to the friction pulleys s
any one or all of which may be in use at the same time; the spindle ŕ revolving
rapidly with the friction pulley s transmits motion to the toothed bevel wheels w. c*f
in cup joint 1 thence through the rigid rod e* to the toothed bevel wheels g* j* l* in
cup joint 2 and to the rigid rod m* and so to the machine * which is attached to the
lower end of the rod m*; heating is reduced to a minimum owing to the lubricant in
the tubes and w*, the machine may be turned in any direction owing to the
arrangement of the joints 1 and 2 and the ferrule d' on the tube **.
Any number of brackets A may be used at the same time from the same rope
gear.
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. The combination of a bracket which may be fixed vertically or horizontally or
at any angle to a post or to any part of a building and a friction wheel to which is
igidly attached a grooved or plan pulley with guide pulleys substantially as and for
the purpose herein set forth.
2. The combination of a large friction wheel with any reasonable number of small
friction wheels and roller brackets substantially as and for the purpose herein set
forth.
3. The combination of rigid. rod connections with cup joints or universal joints.
substantially as and for the purpose herein set forth.

page_text: 4. The combination of rigid rod connections with a tube or water jacket substan-
tially as and for the purpose herein set forth.
5. The apparatus as a whole substantially as and for the purpose herein set forth.
AYRTON & THOMAS,
Agents for the Applicant.