IMPROVED APPARATUS FOR COMMUNICATING OR TRANSMITTING POWER FOR OPERATING PORTABLE DRILLING MACHINES AND FOR OTHER LIKE PURPOSES
Year: 1878

page_text: LETTERS PATENT to William Mead, of Laurence Pountney Hill, in the City
"5
of London, for the Invention of IMPROVED APPARATUS FOR COMMUNICATING
OR TRANSMITTING POWER FOR OPERATING PORTABLE DRILLING MACHINES AND
FOR OTHER LIKE PURPOSES."
Sealed the 24th September 1878, and dated the 28th March 1878.
PROVISIONAL SPECIFICATION left by the said William Mead at the Office of
the Commissioners of Patents on the 28th March 1878.
WILLIAM MEAD, of Laurence Pountney Hill, in the City of London. "IMPROVED
APPARATUS FOR COMMUNICATING OR TRANSMITTING POWER FOR OPERATING
PORTABLE DRILLING MACHINES AND FOR OTHER LIKE PURPOSES."
This Invention relates to apparatus for transmitting or communicating power by
means of ropes or belts running from a driving pulley over or around a series of
pullies to the machine or tool to be operated, whose distance and direction from the
said driving pulley may be varied.
The said apparatus comprises a driving pulley, which may be single, or a series
of different diameters on the same shaft; carrier pulleys suspended in a weighted
frame; carrier pulleys suspended in a swivelling frame, so arranged that it can be
suspended at a point near any desired driving pulley; a pulley on the machine or
tool to be operated to receive the power communicated; and a driving rope or belt,
forming the medium of transmission or communication.
The said rope or belt is passed over the driving pulley, thence both ends of it
pass under the carrier pulleys in the weighted frame from the same side, thence up
and over the carrier pulleys in the swivelling frame from the same side, thence
downward or outward, or both, to and around the pulley on the machine or tool
to be operated.
In passing the rope or belt around this last-named pulley, that is to say, the
driven pulley, the ends are taken from opposite sides, so that when the ends

page_text: of the said rope or belt are joined they form a "loop" with the driven pulley
in it.
Having thus brought all parts of the apparatus in connection with each other by
means of the rope or belt, the same is started by the revolution of the driving pulley,
and so long as the revolutions are continued the power will be transmitted through
the weighted carriers and swivelled carriers to the pulley on the machine or tool
which will thereby be operated. The weighted frame carrying the carrier pulleys
will keep the belt or rope constantly tight.
Now if it is desirable to transmit the power to a greater or less distance, it is
only necessary for the operator to walk from the weighted frame or toward it.
And the operator may walk in any desired direction with the driven pulley, and
the driving rope or belt will keep tight, and the pulleys in the swivel frame will
guide or lead the rope or belt in the proper direction.
It will be observed that as the pulley on the machine or tool being operated is
carried away or extended from the weighted frame, the said frame and carriers will
rise, but in all cases when two carrier pullies only are used, the extension or distance
of movement of the said driven pulley is twice the distance of the rise of the said
frame and carriers, thus enabling the operator with a rise of but 12 feet of the
weighted frame and its carriers to extend the driven pulley 24 feet, and yet have a
constantly tight belt.
Should a greater extension of the said driven pulley be required with a given rise
of weight, I put on another pair or four carrier pulleys on the said weighted frame
and swivel frame, and pass the driving rope or belt under and over them twice
instead of once, as in the first instance; then the rise of the said weighted frame
one foot will give an extension of four feet to the said driven pulley.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Mead in the Great Seal Patent Office on the 28th September
1878.
WILLIAM MEAD, of Laurence Pountney Hill, in the City of London. " IMPROVED
APPARATUS FOR COMMUNICATING OR TRANSMITTING POWER FOR OPERATING
PORTABLE DRILLING MACHINES AND FOR OTHER LIKE PURPOSES."
This Invention relates to apparatus for transmitting or communicating power by
means of ropes or belts running from a driving pulley over or around a series of
pulleys to the machine or tool to be operated, whose distance and direction from the
said driving pulley may be varied, as herein-after described.
The said apparatus comprises a driving pulley which may be single, or a series of
different diameters on the same shaft; carrier pulleys suspended in a weighted
frame; carrier pulleys suspended in a swivelling frame, so arranged that it can be
suspended at a point near any desired driving pulley; a pulley on the machine or
tool to be operated to receive the power communicated; and a driving rope or belt,
forming the medium of transmission or communication.
In the accompanying Drawing,―
Figure 1 is a perspective view of my improved apparatus, shewing the same
applied to a drilling tool.
Figure 2 is a side elevation, illustrating a modified construction of part of the
said apparatus.
Figure 3 is a transverse section on the line x, x, Figure 2.
Like letters indicate the same parts throughout the Drawing.
A, A, are hangers or brackets; a is a driving pulley or series of pulleys, whose
shaft bas its bearings in the said hangers; b is a weighted frame; 61, 62, are carrier
pulleys, supported in the said frame; c is a swivel frame; c', c², are pulleys carried
in the same; d is the driving belt or cord, which extends from the said pulleys
to a pulley e on the shaft of the tool to be operated by the said apparatus.
The said cord or belt d is passed over the driving pulley a, thence both ends
of it pass under the carrier pulleys 61, 62, in the weighted frame b from the same
side, thence up and over the carrier pulleys c¹, c², in the swivelling frame c from
the same side, thence downward or outward, or both, to and around the pulley c
on the machine or tool to be operated.
In passing the cord or belt d around this last-named pulley e, the ends are
passed from opposite sides, so that when the ends of the said cord or belt are
joined they form a "loop" around the pulley e.
All parts of the said apparatus having thus been brought in connection with each
other by means of the cord or belt d, the same is started by causing the driving
pulley a to revolve, and so long as the revolutions of this pulley are continued, the
power will be transmitted therefrom through the weighted carrier pulleys b¹, b²,
and swivelled carrier pulleys c', c, to the pulley e on the said machine or tool which
will thereby be operated. The weighted frame b carrying the carrier pulleys b¹, b³,
will keep the belt or cord d constantly tight.
If it should be desirable to transmit the power to a distance greater or less than
that shown in the Drawing, it is only necessary for the operator to walk from or
toward the weighted frame b, according to the distance required. Moreover, if the
operator walks in any direction with the driven pulley e, the driving cord or belt
will keep tight the pulleys c¹, c, in the swivel frame c, at the same time guiding the
cord or belt always in the proper direction.
It will be observed that as the pulley e in the machine or tool being operated is
carried away or extended from the weighted frame b, the said frame and carriers
61, 62, will rise, but in all cases when two carrier pulleys only are used, the extension,
or distance, or range of movement of the said driven pulley equals twice the distance
of the rise of the said frame and carriers. The operator is thus enabled with a rise

page_text: of but 12 feet of the weighted frame b and its carriers b', b, to extend the driven
pulley e 24 feet, while having a constantly tight driving belt or cord.
Should a greater extension or range of the said pulley e be required with a given
rise of the weight, I provide another pair of carrier pulleys, that is to say, four of
such pulleys in the weighted frame b, and four in the swivel frame c, and
pass the
driving cord or belt d under and over them twice instead of once, as in the first-
described arrangement; then the rise of the said weighted frame bone foot will
give the said driven pulley e an extension or range of four feet.
Instead of using the hook and swivel, shewn in Figure 1, for supporting the
pulley frame c, I sometimes use the hanger, shown in Figures 2 and 3, which is so
arranged that the said pulleys may be hung opposite to either of the parts or speeds
of the cone pulley a.
Having thus fully described my said Invention and the manner of performing the
same, I wish it understood that I claim,-
First. The combination of a driving pulley and a cord, rope, or belt with weighted
pulleys and the swivel pulley or pulleys, whereby the driven pulley may be moved
or extended outward or downward a distance which is always a multiple of the
rise of the said weighted pulleys, as above specified.
Second. The combination of the pulley a and the hanging and swivelling parts
of the said apparatus with the pulley on the machine or tool to be operated in
such a manner that the latter pulley may be always extended a distance equal
to two or more times the distance the said weighted pullies are raised, as above
specified.
In witness whereof, I, the said William Mead, have hereunto set my hand.
and seal, this Twenty-seventh day of September, in the year of our Lord
One thousand eight hundred and seventy-eight
Witness,
H. H. LAKE,
8, Southampton Buildings,
London..
WILLIAM MEAD. (L.S.)