IMPROVEMENTS IN LETTERS PAT
Year: 1864

page_text: LETTERS PATENT to Marc Autoine François Meunons, of the Firm of
Mennons and Teleschef, Home and Foreign Patent Agents, of Abingdon
Chambers, in the City of Westminster, and 24, Rue de Dunkerque,
Paris in the Emire of France for the Invention of "IMPROVEMENTS IN
LETTERS PATENT to Marc Autoine François Meunons, of the Firm of
Mennons and Telescheff, Home and Foreign Patent Agents, of Abingdon
Chambers, in the City of Westminster, and 24, Rue de Dunkerque,
Paris in the Empire of France for the Invention of "IMPROVEMENTS IN
THE CONSTRUCTION OF SEWING MACHINES."-A communication from Joseph
D
PROVISIONAL SPECIFICATION left by the said Marc Antoino François
Mennons at the Office of the Commissioners of Patents, with his
Petition, on the 6th September 1864.
1, MARC ANTOINE FRANÇOIS MENNONS, of the Firm of Mennons and
Telescheff, Home and Foreign Patent Agents, of Abingdon Chambers, in the
City of Westminster, and 24, Rue de Dunkerque, Paris, in the Empire of
Franco, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN THE CONSTRUCTION OF SEWING MACHINES," to be as follows:-
This Invention relates to improvements in the construction of fast stitch
sewing machines, as shown by the accompanying Drawing, in which Figure 1
is a longitudinal section of a double thread machine; Figure 2 is a plan of

page_text: the mechanism below the bed plate; Figuro 3 is an end view of the machine;
Figure 4 is a side elevation of the cam ; Figure 5 is a section of the same;
Figures 6 and 7 are end and side elevations of the can p. In all those Figures
similar parts of the machinery are indicated by the same letters of reference.
a is the driving shaft giving motion to the upper needle rod 6 through the
crank pin c and connecting rod d; e is a cam giving motion to the feed rod f
and foot g; h is another cam for the purpose of lifting the spring & and conse-
quently the rod fat the same time, in order to raise the feed foot at the moment
of its retrograde motion; is a third cam giving motion through the rods
m, n, to the under needle or looper o, the rod n having also a lateral motion of
about one-eighth (th) of an inch imparted to it at same time by the action
of the bevelled portion of the camp against the side of the bearing q; r is a
spiral spring serving to carry back the shaft on the return of the cani p. When
so desired, the machino above described may be adapted to single thread
sewing by the suppression of the can p and spring r, and tho substitution to
the looper o of a hook s, as shewn by Figures 8, 9.
The form, dimensions, and general details of construction may be modified
according to circumstancos.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Mare Antoino François Mennons in the Great Seal Patent
Office on the 3rd March 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MARO
ANTOINE FRANÇOIS MENNONS, of the Firm of Mennons and Telescheff, House
and Foreign Patent Agents, of Abingdon Chambers, in the City of Westminster,
and 24, Rue de Dunkerque, Paris, in the Empire of France, send greeting.
WHEREAS er most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date tho Sixth day of September, in the year of our Lord One
thousand eight hundred and sixty-four in the twenty-eighth year of Her reign,
did, for Herself, Her hoirs and successors, give and grant unto me, the said
Marc Antoine François Mennons, Her special licence that I, tho said Mare
Antoine François Mennons, my executors, administrators, and assigns, or such
others as 1, the said Marc Antoine François Menuons, my executors, adminis-
trators, and assigns, should at any time agreo with, and no othors, 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 King-

page_text: dom of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF SEWING MACHINES," (a
communication from Joseph Weatherby Bartlett, a person resident at No. 442,
Broadway, New York, in the United States of America,) upon the condition
(amongst others) that I, tho said Marc Antoine François Mennons, 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 Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Mare Antoine François Mennons, do
hereby declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement, that is to say :-
This Invention relates to improvements in the construction of fast stitch
sewing machines, as shewn by the accompanying Drawings, in which Figure 1
(Pl. 1.) is a londitudinal section of a double thread machine; Figure 2 is a
plan of the mechanism below the bed plate; Figure 3 is an end view of the
machine; Figure 4 is a side elevation of the cam l; Figure 5 is a section of
the same; Figures 6 and 7 are end and side elevations of the cam p. In all
these Figures similar parts of the machinery are indicated by the same letters
of reference.
a is the driving shaft giving motion to the upper needle rod & through the
crauk pin c and connecting rod d; e is a cam giving motion to the feed rod f
and foot g; h is another cam for the purpose of lifting the spring k and consc-
quently the rod fat-the same time, in order to raise the feed foot at the moment
of its retrograde motion; is a third cam giving motion through the rods
m, n, to the under needle or looper o, the rod n having also a lateral motion of
about one-eighth (th) of an inch imparted to it at same time by the action
of the bevelled portion of the camp against the side of the bearing 9; ris a
spiral spring serving to carry back the shaft on the return of the cam p.
When so desired, the machine above described may be adapted to single thread
sewing by the suppression of the camp and spring r, and the substitution to
the looper o of a hook s, as shewu by Figures 8, 9. In Plate II., Figure 1
represents in side elevation (full size) a modified form of the machine above
described; Figure 2 is a plan of the same; Figure 3 is an end elevation
Figure 4 is a plan of the feed mechanism; Figure 5 is a section of the feed

page_text: mechanism applicable to a one-thread machine; Figure 6 is a side elevation
of the cam; and Figure 7 is an end elovation of the same. As in the preceding
Plate, the same letters of reference indicate corresponding parts in each
Figure.
a is the driving shaft giving motion to the upper needle rod 6 through the
crank pin c and connecting rod d.
In this arrangement the arm enclosing the shaft is considerably lengthened,
as shown in the Drawing, so as to afford greater spaco for the material and
improve the general appearance of the machine. e is the pressure fuot held
upon the fabric by the spring f; 9 is a cam giving motion through the rods h
and to the under needle or looper k, the rod i having also a lateral motion
of about one-eighth of an inch given to it at the same time by the action of
the bevelled portion of the cam l against the side of the bearing m; n, spiral
spring which takes the shaft back as the cam 1 returns; o, Figures 1
and 4, is a sliding lover held by the thumbscrew p in a groove upon a shaft i,
which gives motion to the lever q, turning upon the screw r, and at same time
imparts its motion to the feed bar s. As the opposite end of the lever 9 comes
in contact with the pin t, the lever o is made to slide in the groove upon the
shaft so as to vary the length of the stitch. , Figures 1, 4, and 5, is a cam,
vis a spiral or other
which gives the upward motion to the feed bar 8.
spring for the purpose of bringing back the bar to its original position.
Figure 5 represents the improved feed mechanism applicable to a one-
thread sewing machine, in which are omitted the lover q, the spring n, and the
bevelled portion of the cam 1, the cam u performing both the upward and
forward motions. The addition of the lever w may in some cases be advan-
tageous. In using what is termed the upper feed (as in the machine shewn
in Pl. 1.), the presser foot having teeth cut in its under surface, is actuated by
the cam e, the cam h being for the purpose of lifting the rod i and spring k
luring the backward motion of the presser foot g.
The parts shewn in the Figures 1, 3, 4, 5, Pl. II., under the letters 1, n, o,
P, q, r, s, t, u, v, w, are with this feed omitted.
Having now described and ascertained the nature of the said improvements
and the manner of carrying them into effect, I would have it understood that I do
not confine myself to the precise details of form, dimensions, and general con-
struction abovo laid down, as these may obviously be modified in many respects
without deviating from the principles or main features of the Invention; but
what I claim and desire to protect by the herein-before in part recited Letters
Patent is.

page_text: Firstly, the combined sliding and vibratory movement of the looper or under
needle rod substantially as herein set forth.
Secondly, the feed regulator substantially as described and shewn in Figs. 1,
4, Pl. II.
Thirdly, the cam u, projection or pin, and feed bar s substantially as above
described and shown in Figures 1, 4, 5, Pl. II. of the accompanying Draw-
ings, combining therowith the loopers, Fig. 9, Pl. I.
In witness whereof, I, the said Marc Antoine François Mennons,
have hereto set my hand and seal, this Second day of March, in the
year of our Lord One thousand eight hundred and sixty-five.