Year: 1888

page_text: Date of Application, 23rd Jan., 1888
Complete Specification Left, 23rd Nov., 1888
Complete Specification Accepted, 31st Dec., 1888
We, JOHN JAMES ROBINSON, and EDWARD HANFF, both of 16 Normans Buildings,
Old Street, in the County of Middlesex, Engineers, do hereby declare the nature of
this invention to be as follows:-
Our invention relates to chain stitch sewing machines, and consists of various
improvements in details of construction which shall render our machine an effective
sewing machine and very cheap in construction.
We construct the frame of our machine out of stamped and bent plate, to enable the
same to be made cheaply, and we form the base plate into a clamp, which with a set
screw forms a clamp for attachment to a table or ledge.
The working table we form out of a separate bent plate, and securely attach it in a
firm and secure manner to the frame. The needle bar is also a stamped plate with
bent ends sliding on a vertical guide rod, and with a slotted projecting wing, which
slides under the bead of a set screw, tapped into a convenient part of the frame or
table. This arrangement steadies the needle and prevents the needle bar from pivoting
on the guide rod. The needle bar is reciprocated by a connecting link from a double
bell crank handle, which at the same time gives the looper the necessary rotation.
We employ the usual known feed, operated from the said cranked axle. We fix a
spring pressed presser foot to the head of the top arm of the frame, which thus presses
the work directly on the table.
To lift the said presser foot we apply a pivotted lever to the presser shaft, and use
one end of the lever as the lifting arm. The other end of the said lever when the
presser foot is lifted, is thus brought so as to lock over the head of the guide screw
in the frame, and the presser foot is thus held supported until the said lifting or locking
lever is disengaged and the spring pressure on the top of the presser foot brings it
down again upon the work.
Dated thin 92nd dow of La1000
FELL & WILDING,
1, Queen Victoria Street, London, E.C.,
Agents for the Applicants.

page_text: Improvements in Sewing Machines.
We, JOHN JAMES ROBINSON, and EDWARD HANFF, both of 16 Normans Buildings,
Old Street in the County of Middlesex, Engineers, 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 :-
Our invention relates to chain stitch sewing machines and consists of various
improvements in details of construction, which shall render our machine an effective
sewing machine, and very cheap in construction.
In order that our invention may be the better understood, we now proceed to
describe the same in relation to the drawing hereunto annexed, reference being had to
the letters marked thereon.
The figure shows an elevation of our improved sewing machine.
We construct the frame A of our machine out of stamped and bent plate metal to
enable the same to be made cheaply. The base plate B to which the upper frame is
attached by rivetting is formed into a clamp with a set screw C for ready attachment
to a table or ledge. The working table D is formed out of a separate bent plate
screwed or otherwise firmly attached to the upper frame. The needle bar E is also a
stamped plate with the end E' bent down and provided with a set screw F to hold the
needle G. The ends H of this needle bar are bent at right angles to its plane and
pierced with two round holes to enable the needle bar to slide easily upon the vertical
guide rod J. The said needle bar E has also a slotted wing K which slides under the
head of the set screw k tapped into a convenient part of the frame or table. This
slotted wing and set screw steadies the needle bar and prevents it from pivoting on
the vertical guide rod J.
The needle bar is reciprocated by a connecting link L from a double bent crank
handle M which at the same time gives the looper Ñ the necessary rotation.
We employ the usual known feed O operating on the fabric through a slot from
underneath the working table D with the usual reciprocating motion effected by an
eccentric n on the looper shaft or crank handle M.
We fix a spring pressed presser foot P to the head of the top arm of the frame
which thus presses the work directly on to the working table. To lift the said presser
foot P we apply a pivoted lever p to the body of the presser foot and use the outer end
of the lever as a lifting arm. The other end of the said lifting lever p when the
presser foot is lifted is brought down so as to lock over the head of the presser foot
guide screw p¹ fixed in the frame and the presser foot is thus held supported until the
said lifting or locking lever is disengaged and the spring pressure on the top of the
presser foot brings it down again upon the work. Q is an ordinary reel of cotton to
which the desired tension is applied by the spring and set screw R on the top of the
needle bar guide rod. The thread is brought to the needle in the usual manner through
a guide hole in the top of the presser foot, thence through another guide hole in the
needle bar, and thence down to the eye of the needle.
"

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1st. The combination of parts forming a complete chain stitch sewing machine,
substantially as described.
2nd. In such a chain stitch sewing machine, a needle bar E E¹ formed from one
piece of sheet metal sliding vertically on a guide rod J and provided with a slotted
wing piece K working under the head of a screw k to steady the said needle bar and
to prevent its rotation about the guide rod J.
3rd. In such a chain stitch sewing machine, the lifting mechanism of the presser
foot P by means of a bent lifting lever p one end of which forms a lock over the head
of a set screw p¹ to hold the presser foot up, substantially as described.
Dated this 93rd day of November 1888
For FELL & WILDING,
R. A. Hoffmann,
1, Queen Victoria Street, London, E.C., .
Agents for the Applicants.