Year: 1890

page_text: The needle carrier actuated by rod from eccentric, is pivoted on a stud on the
frame and has a semi-circular vibratory motion imparted to it by the eccentric. The
needle fixed in the carrier is curved to the section of the circle which it describes and
has a barb and point at the lower end.
The looper which vibrates under the plate on which the work rests has the required
motion imparted to it by its cam.
The presser point is intended to keep the work in position and also to resist the
upward pull of the needle when returning through the material with the thread in the
barb.
The feed point, the upper end of which is pivoted to a sleeve which works up and
down on a part of the presser point which stands at an angle is so placed that its
downward motion causes it to come in contact with the work in the machine and
force it along, the feed point returning to its original position before the descent of
the needle to make the next stitch. The feed point is actuated by a cam attached to
a part of the presser point and having a slot which gives an up and down motion to
the aforesaid sleeve by means of a roller, thereby giving the required motion to the
feed point.
The disc on the main shaft has an adjustable projection which in revolving comes
in contact with a lever, fixed to another shaft, gives a vibratory motion to the lever
and shaft, and by means of another lever and link actuates the aforesaid feed cam.
The cast off, intended to cover the barb of the needle to prevent the last loop made
from catching in it as the point of the needle leaves the material, is actuated by a
stud fixed to it, which as the needle carrier rises comes in contact with an inclined
surface at the end of a lever pivoted to the frame and is kept down by a spring.
When the needle carrier is at its highest the stud on the cast off passes the end of the
inclined plane, and, by the pressure of the aforesaid spring fixed to the lever, causes
the cast off to rise and uncover the barb to allow the loop to escape as the needle
descends to make the next stitch.
The raising, lowering and locking of the presser point is produced by a wedge
shaped piece one end of which being in contact with a projection on the presser shaft
and the other in contact with a projection on the frame, the action of moving the wedge
shape piece backwards and forwards at right angles to the presser shaft causes it to
rise and fall and by the opposite action of two springs, one on the wedge shaped piece
with a tendency to move the presser shaft downwards and the other on the presser

page_text: shaft itself with an opposite action, the point when placed on the work. is pressed
down upon it and prevents its being raised when the needle rises.
Dated this 4th day of March 1890.
H. GARDNER,
166, Fleet Street, London, Agent for the said M. C. and T. J. Denne.
COMPLETE SPECIFICATION.
Improvements in Sewing Machines.
We MARK CHARLES DENNE of Christchurch Road, Eastbourne, Sussex, and
THOMAS JAMES DENNE of Petersfield, Hants, Engineers, do hereby declare the nature
of our said invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention has for object the construction of a sewing machine by which, soles
can be sewn on to the welts of boots and shoes with a waxed thread. The machine is
of a portable character and can be readily affixed to a bench and worked by hand direct
from a fly wheel, it can be set upon a pedestal for working by foot pedal and strap of
the usual construction or arrangement, or by steam power.
We attain this object by the introduction of certain appliances which will be
hereinafter more particularly described and which enable us to produce a portable
and easily handled machine capable of performing the above work.
We will first describe the machine with the aid of the accompanying drawings.
Figure 1, an elevation of the machine from the left hand side.
Figure 2, a similar view from the right hand side.
Figure 3, front or face view.
Figures 4 to 12 are views of detail parts.
Figures 13 and 14 shew a modified arrangement of cast off operator.
Referring to Figures 1 to 12 inclusive, A is the frame with head B within which
the presser foot stein C has an upward motion when the plate or lever D is pulled to
the front by its handle E this permitting the spring F which is on its upper end to
act and the presser foot G to rise when the work has to be placed in position upon
the workplate H, the lower end of the presser foot G being somewhat pointed to
engage in the channel previously formed in the sole which has to be sewn on.
The plate or lever D has a sliding motion in the cheek of a bracket I and bears
upon a pin J projecting from the presser foot stem C, said plate being drawn back
and retained in position by a spring K affixed to an eye on the back head L. The
presser foot G for a part of its length is encircled by a sleeve M and this has
pivotted to it the feed foot N.
The sleeve M has a pin projecting from one of its faces to ride in a slot of a
tumbler P, which when moved over by the link Q, and the lever R which are
actuated by the shaft S from the cam T, causes the sleeve M to have a motion
independently of the presser foot for feeding the work along for each successive
stitch, the presser foot G remaining in the channel as a guide for keeping the sole in
place. The sleeve M is drawn in one position by spring U and bears upon the
spring V in the manner shewn in the drawings so that the feed foot is caused to
operate in proportion to the desired length of stitch, this being governed by the
distance the cam T (which is adjustable) is set away from its carrying disc W by a
set screw (not shewn).
The workplate H has a block X against which the edge of the work rests." This
block is adjustable on the plate by the tightening screw Y to accord with the distance
the sewing is to be performed from the edge of the boot sole.
The neck Z of the frame has a pin a projecting from it on the left hand side and a
quadrant plate b is mounted loosely on it, said plate having the segmental needle c
affixed in it by the tightening screw d. The plate b is caused to describe a circular
movement about the pin a by the lever e actuated by the eccentric f. The pin a also
carries the cast off g mounted loosely upon it by its boss h, which boss has a leg i

page_text: affixed which rides in a slot of the plate b. The leg i for a part of the circular
oscillation of the plate b is lifted to move the cast off for a given distance with the
needle c in its descending stroke and is caused to impinge against an inclined edge j
of a lever k which it lifts until the leg passes the point of the incline; when by the
pressure of the spring the leg i is suddenly shot forward by an opposite incline m of
the lever k, which causes the cast off g to press upon the work while the needle is
going down in it, the point having already entered and passed through the work
the leg i being temporarily locked in the indent at the end of the incline m.
n is the looper having a vibrating motion under the workplate H; it is carried by
a collar p on a pin 9 and is actuated by an articulated rod r from a cam on the back
shaft s on which is also mounted the disc W and the eccentric f.
The waxed thread from a reelt and a tension disc u passes through the looper and
through a hole in the workplate H and in the path of the needle which is barbed in
order to fetch the waxed thread up from below by its barb. During this operation
the cast off g remains on the work the return of the needle being effected by the
lever e and eccentric fand so soon as the opposite end of the slot in the plate b comes
into contact with the leg i, this leg is caused to exert a pressure down the incline m
of the lever k until the point of the incline is passed, the spring then exerting a
pressure on the lever causes the leg to fly to the bottom of the slot in the plate 6 to
bring the cast off into the position indicated at Figure 1, the needle being then out
of the work with the thread loop in its barb.
Instead of a leg i being upon the boss of the cast off g, a roller v, Figures 13
and 14, may be substituted for it to be acted upon by the inclines j, m, of the lever k
which lever may be a double ended lever, as indicated with the spring at its opposite
end the incline; being somewhat longer to retain the hold of the cast off when the
needle c is out of the work.
By this arrangement the slot in the needle carrying plate 6 is dispensed with and
two studs substituted for it.
We have described the machine as a whole which is the subject of our inventiou
we would have it understood that we are aware that various machines have been made
for the purpose of sewing soles on boots and shoes and that we do not claim generally
machines for this purpose but
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The machine for sewing soles on boots and shoes shewn at Figures 1, 2 and 3
of the annexed drawings with the parts arranged and acting substantially in the
manner herein before described and therein shewn, or with the modifications shewn in
Figures 13 and 14.
2. In a boot sole sewing machine the arrangement of parts for effecting the feed,
herein described and shown on the accompanying drawings.
3. In a boot sole sewing machine the use of a cast off vibrating in a circular path
substantially as berein described and shewn in the accompanying drawings.
4. In a boot sole sewing machine the use of a cast off constructed and actuated
substantially as herein described and shewn in the accompanying drawings.
Dated tins 4th day of December 1890.
H. GARDNER,
Patent Agent, 166, Fleet Street, London
Agent for the said M. C. and T. J. Denne.