IMPROVEMENTS IN SEWING MACHINES
Year: 1868

page_text: LETTERS PATENT to Richard Harvey, of the City of Bristol, Sewing
Machine Factor, for the Invention of "IMPROVEMENTS IN SEWING
MACHINES."
Sealed the 19th February 1869, and dated the 25th August 1868.
PROVISIONAL SPECIFICATION left by the said Richard Harvey at the
Office of the Commissioners of Patents, with his Petition, on the
25th August 1868.
I, RICHARD HARVEY, of the City of Bristol, Sewing Machine Factor,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN SEWING MACHINES," to be as follows:-
The object of this Invention is to simplify the construction of sewing
machines. To this end I operate the shuttle by means of a driver
attached to one end of a reciprocating horizontal lever which has its
O fulcrum on a vertical stud below the table. The shuttle is worked over
a curved race, and it is carried by a lip or flange with which the driver
is fitted. The rear end of the horizontal lever is forked to embrace an
excentric which is keyed to a cam shaft, mounted in bearings below the
table and parallel to the shaft which transmits motion to the vertical

page_text: needle. As the excentric rotates it will impart a reciprocating motion to
the shuttle driver lever, and thus cause the shuttle to travel to and fro
over its race and take up the loops formed by the needle thread. The
feed motion is obtained from a double cam on the cam shaft, and this
motion is regulated by means of a stop lever.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Richard Harvey in the Great Seal Patent Office on
the 24th February 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
HARVEY, of the City of Bristol, Sewing Machine Factor, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of August, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Richard Harvey, Her special licence that
I, the said Richard Harvey, my executors, administrators, and assigns, or
such others as I, the said Richard Harvey, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time, and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN SEWING MACHINES," upon
the condition (amongst others) that I, the said Richard Harvey, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Scal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Richard Harvey, do hereby declare
the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by
the following statement:-
The object of this Invention is to simplify the construction of some of
the working parts of sewing machines. For this purpose I provide a bar

page_text: or lever which has its fulcrum on a stud, one end of the lever being.
forked and embracing an eccentric which is fastened to a shaft mounted;
in bearings, whereby as the eccentric rotates it will impart a reciprocating
motion to the ends of the bar or lever; and thus cause; the shuttle. or.
needle or other part operated on to travel to and fro in its race. The
other parts of the sewing machine will be constructed in the ordinary or
other suitable manner.
Having thus described the nature and character of my said Invention
I will proceed to more particularly describe and ascertain in what manner
the same is to be performed or put in practice by reference to the
accompanying Drawings.
DESCRIPTION OF THE DRAWINGS.
Fig. 1, side view (partly in section) of a machine, showing my said
improvements; Fig. 2, plan of same (partly in section); Fig. 3, plan of
reciprocating bar or lever shaft, eccentric shuttle, and curved race con-
structed according to my Invention; Fig. 4, side view of same (partly in
section)... Similar letters of reference are used to denote similar parts so
far as the parts are shown in such Figures..
The shuttle F is driven by means of one end f of the reciprocating
bar or lever G, which has its fulcrum on a stud g, which is shown in the
Drawing in a vertical position below the table, but it might be placed in
suitable position according to the arrangement of the machine, for
instance, the stud might be in a horizontal position with the eccentric
reciprocating the ends of the bar or lever up and down so as to act on
the needle bar, the stud being fixed to the highest part of the standard
and eccentric close inside of the upper gear wheel. The shuttle F is to
work in a race A, and it is carried by the lip or flange e, e, with which
the shuttle end f of the reciprocating bar or lever is fitted. The other
end of this reciprocating bar or lever is forked at h to embrace an
eccentric H which is secured to the shaft E. As the eccentric H is made
to rotate it will impart à reciprocating motion to the reciprocating bar
or lever G, and thus cause the shuttle F to travel to and fro in the race A.
The other parts of the machine being similar to those already in use need
no description.
Having now particularly described and ascertained the nature of the
said Invention and in what manner the same is to be performed, I
hereby declare that I claim the Invention of "Improvements in Sewing

page_text: Machines," as the nature and character thereof are set forth in this
Specification by the words preceding the words Description of the
Drawings. I do not, however, claim or limit myself to the use of the
mere details of construction adopted in the sewing machine as shown by
the accompanying Drawings, which taken per se and apart from the
purposes of I my said Invention do not form the Invention secured by the
said Letters Patent aforesaid.
In witness whereof, I, the. said Richard Harvey, have hereunto set
my hand and seal, this Eighteenth day of February, in the year
of our Lord One thousand eight hundred and sixty-nine.
Witness,
JOHN FORD, jun*.,
Milk Street,
Bristol.
RICHARD HARVEY. (L.S.)