AN IMPROVED METHOD OF RETARDING THE PROGRESS OF CARRIAGES IN CERTAIN CASES
Year: 1835

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JoпN
BLYTH, of the Parish of Saint Anne, Limehouse, in the County of Middlesex,
Engineer, send greeting.
阿
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Thirty-first day of December, in the sixth year of His reign,
did, for Himself, Iis beirs and successors, give and grant unto me, the said
John Blyth, His especial licence, that I, the said John Blyth, my exors,
adiiors, and assigns, or such others as I, the said John Blyth, my exors,
adiňors, or assigns, should at any time agree with, and no others, from
time to time and at all times during the term of years therein expressed,
should and lawfully might make, use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, and also in all His said
Majesty's Colonies and Plantations abroad, my Invention of "AN IMPROVED
METHOD OF RETARDING THE PROGRESS OF CARRIAGES IN CERTAIN CASES;" in
which said Letters Patent is contained a proviso obliging me, the said
John Blyth, by an instrument in writing under my hand and scal, particularly
to describe and ascertain the nature of my said Invention, and in what
manner the same is to be performed, and to cause the same to be enrolled
in His said Majesty's ligh Court of Chancery within six calendar months

page_text: next and immediately after the date of the said recited Letters Patent, as
in and by the same, reference being thereunto had, will more fully and at
large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
John Blyth, do hereby declare the nature of my said Invention to consist
in attaching a friction band, acting round a friction pulley placed on the nave
of the wheel, to the body of a frame of the carriage, and hanging the body in
such manner on the springs that when any sudden check is given to the
train, or when the carriage is descending a hill, the body will slide forward and
draw the friction band tight around the friction pulley, thus assisting the
horses to pull up when required on level ground, and to hold back when
going down hill, without any attention being required from the driver to put
the machinery by which this effected in action. And in further compliance
with the said proviso, I, the said John Blyth, do hereby describe the manner
in my said Invention is to be performed by the following statement thereof,
reference being thereunto had, to the Drawing annexed, and to the figures and
letters marked thereon, that is to say:-
DESCRIPTION OF THE DRAWING.
Figure 1 is a side elevation of such parts of the side frame and train of
a carriage as will best exhibit my said Invention, some parts being shewn in
section in order the better to explain their relative positions. All those parts
on which my said Invention depends are colored, and similar letters are used
to denote similar parts in all the Figures. A is the near side frame of the body.
B is the near fore wheel, and C is the off hind wheel. D is a flanged friction
pulley shown in section, supposed to be placed on the inner end of the nave of
the near hind wheel. e, e, e, e, is a metal jointed band passing loosely round the
pulley, fastened at one end to a fixed arm or bracket projecting from the side
frame A, and at the other end to the extremity of one leg or fork of what I call
the saddle piece. F is the said saddle piece, and has a groove, open mortice, or
channel cut in its under side for the band to work in. This saddle pieco is
bolted down upon the spring by the same bolts which pass through the blocks,
and fasten the springs to the axle. When the side frame is in the position
here shown, the friction band will hang loosely round the friction pulley. But
it will be seen there are loops or slots in the springs at 9, I, J, g, formed by
turning over and back or forward, as the case may be, the extreme ends of the
upper plate of the springs, and the frame or body of the carriage is supported
by cross or transverse springs, which are supported by means of shackles and
bolts having friction rollers thereon from and under the ends of the longitudinal

page_text: springs, and in the loops or slots, so that the frame or body of the
carriage may move forward or backward to the extent of the length of these
slots, independently of the train, and if the length of the friction band be
so adjusted that when the body or frame is forward in the slot, the band will
nip tightly round the friction pulley, it is evident that the wheel on the nave
of which the pulley is fixed will drag on the ground and thus retard the
progress of the carriage. And one peculiarity of my said Invention is, that
this forward position of the body or frame will always occur at those times
when it is desirable that the carriage should be retarded, as, for instance, if the
carriage be going down hill, or if the driver suddenly pulls up even on level
ground, the inclination of the train effecting the forward motion in the one
case, and the impetus which the body retains after the check given to the
train by pulling up the horses in the other case. On starting again the first
impulse being given to the train the body will resume the backward position,
and the band will hang loosely again around the pulley ready for another
operation.
Figure 2 is a plan of my said Invention.
Figure 3 is a separate vertical section of the saddle piece band and flanged
pulley, and Figure 4 is a separate view of the same parts, as scen from behind
the carriage.
Now whereas I claim as my Invention causing carriages to be retarded by
a friction band or other break attached to the body or frame, and brought
into action or released by the forward or backward motion herein-before
described of the said body or frame; and such my Invention being, to the best
of my knowledge and belief, entirely new, and never before used within that
part of His Majesty's United Kingdom of Great Britain and Ireland called
England, His said Dominion of Wales, and Town of Berwick-upon-Tweed, say,
nor in any of His said Majesty's Colonies or Plantations abroad, I do hereby
declare this to be my Specification of the same, and that I do verily believe
this my said Specification doth comply in all respects fully, and without
reserve or disguise, with the proviso in the said herein-before in part recited
Letters Patent contained; wherefore I do hereby claim to maintain exclusive
right and privilege to my said Invention.
In witness whereof, 1, the said John Blyth, have hereunto set my hand
and seal, this Twenty-seventh day of June, in the year of our Lord
One thousand eight hundred and thirty-six.
JOIN (1.8.) BLYTH.

page_text: AND BE IT REMEMBERED, that on the Twenty-seventh day of June, in
the year of our Lord 1836, the aforesaid John Blyth came before our said
Lord the King in His Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.