Improvements in Treadle Sewing Machines.
Year: 1896

page_text: Improvements in Treadle Sewing Machines.
I JOSEPH HIGHAM of 25 Field Street Wigan, in the County of Lancaster
Engine Fitter do hereby declare the nature of this invention to be as follows:-
It is designed to effect a more perfect control of the needle shaft, by preventing
it from revolving in the backward direction, which causes damage, more or less, to
needle, thread, and fabric. An extension of about an 1 in. in length of the
needle shaft from its collar face of some dia. a part of its length, and the rest
reduced to dia, with nut to fit, is prepared for the reception of these improvements,
outside the balance wheel.
In the accompanying full size drawing, Figures A, B and C represent three
different views of the invention, and the following explanation sets forth the
manner of carrying it into effect.
By Fig. A is shewn a front view of balance wheel rim in section, attached to its
band pulley, as also a portion of the needle shaft with its new extension, whereon
the several parts composing these improvements are carried, and consist of a small
angular toothed wheel of bore; a cylindrical steel bush of bore, and outer
dia. a disc of some 2 in. dia. with boss on its inner side only, and to which two
curved links are attached to the same inner side; a cam and its circular handle
attached, for putting "out of goar" &c.; a friction washer; and a recessed steel
collar. The toothed wheel (a) is first secured to the needle shaft collar face (b) by
a projecting pin, or by a small key in shaft. The end of steel bush (c) and the
boss of disc (d) are placed in contact with the outer face of wheel (a); then
follows the cam (e) with its handle. (f) in section; the friction washer (9); and
the recessed steel collar (4) also in section, on the outer end of bush (c); all being
secured thus by the nut (1).
By Fig. B is shown a view of the inuer faces of wheel (a) and disc (d) with its
arrangement of the two curved links (and k); their connection also by the two
sided link () and its connection by a projecting pin (m) to the balance wheel, at
some 1 iu. and from its centre. The liuks ( and k) are attached to the face of
disc (d) each by a small collared pivot, serowed through the disc, and secured each
by a small locknut on its outer side. The two sided link () is attached to the
inner sides of links (and 4) by a pivot screwed through each of the free ends of
these same two links (j and k) and rivolted at each end, all to work freely
together. The short side of link (1) is formed at its point, to engage with the
teeth of wheel (a) by the actuating pin (m) when machine moves in the forward (n)
direction, and disengages itself when moving in the backward (o) direction.
Fig. C is a reversed view of the foregoing fig. consequently, a portion of curved
link), the whole of link (k), and a portion of the engaging liuk (1) being behind
the disc (d) are shewn in dotted lines. The form of cam (e) by its handle (f)
being removed, and the outer face of mut (i) are here shewn in full. A small
steel check pin (p)
is secured to curved link (*) aud projects through a long radial
hole (p) in disc (d) over the edge of cam (e) which serves a twofold purpose, now
to be briefly explained.
By the combined action of all the links (kl) and disc (d) under the influence
of pin (m) in the balance wheel, the balanced fulcrum of link (1) ensures a perfect

page_text: grip of the needle shaft when revolving in the forward (n) direction and when
moving in the backward (o) direction, the engaging point of link (1) is raised just
clear of the teeth of wheel (a) aud the link (E) is also raised until its check pin (p)
arrives at the outward end of its long radial hole (p) in disc (d), as shewn in
Figs. B and C; and thus, while all the links (jk) and disc (d) revolve in the
backward (o) direction, the needle shaft itself becomes instantly at rest.
The machine is put "out of gear," or for bobbin or spool winding by simply
turning the swelled part of cam (e) under the check pin (p) as far as its arc (9),
and by reversing the process until its arc (r) arrives at the stop pin (s) it is again
put "in gear."
Dated this 20th day of August 1896.
Improvement
le sewing
1, JOSEPH HIGHAM of 26 Field Street, Wigan, in the County of Lancaster,
Engine Fitter, 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 :-
It is designed to effect a more perfect control of the needle shaft, by proventing
it from revolving in the backward direction, which causes damage, more or less, to
needle, thread, and fabric. An extension of about an 1 in. in length of the needle
shaft from its collar face of some dia. a part of its length and the rest reduced
to din, with nut to fit; is prepared for the reception of these improvements,
outside the balance wheel.
In the accompanying full size drawing, Figures 1, 2, and 3 represent three
different views of the invention, and the following explanation sets forth the
manner of carrying it into effect.
By Fig. 1 is shewn a front view of balance wheel rim in section, attached to its
band pulley, as also a portion of the needle shaft with its new extension, whereon
the several parts coinposing these improvements are carried, and consist of a small
angular toothed wheel of bore; a cylindrical steel bush off bore, and outer
dia. a disc of some 2 in. dia., with boss ou its inner side only, and to which two
curved links are attached to the same inner side; a cam and its circular handle
attached, for putting "out of gear," a friction washer; and a recessed steel collar.
The toothed wheel (A.) is first secured to the needle shaft collar face (B.) by a
projecting pin or by a small key in shaft. The end of steel bush (C) and the boss
of disc (D.) are placed in contact with the outer face of wheel (A.); then follows
the cam (E.) with its handle (F.) in section; the friction washer (G.) and the
recessed steel collar (H.) also in section, on the outer end of bush (C.); all being
secured thus by the nut (1.). By Fig. 2. is shewn a view of the inner faces of
wheel (A.) and disc (D.) with its arrangement of the two curved links (J and K),
their connection also by the two sided link (L.) and its connection by a projecting
pin (M.) to the balance wheel at some 1 in. and from its centre.
links (J and K) are attached to face of disc (D.) each by a small collared pivot,
screwed through the disc, and secured each by a small locknut on its outer side.
The two sided link (L.) is attached to the inner sides of links (J and K) by a
pivot screwed through each of the free ends of these same two links (J and K) and
rivetted at each end, all to work freely together. The short side of link (L.) is
formed at its point, to engage with the teeth of wheel (A.) by the actuating pin (M.)
when machine moves in the forward (N.) direction, and disengages itself when
moving in the backward (O.) direction. Fig. 3. is a reversed view of the foregoing
The

page_text: Sg. consequently, a portion of curved link (J.), the whole of links(K.) and a portion.
of the engaging link (L.) being behind the diso (D.) are shewn in dotted lines..
The form of cam (E.) by its handle (F.) being removed, and the outer face of
aut (I.) are hero shewn in full. Their connecting pin V in Fig. 1 is shewn in.
section in Fig. 3. A small steel check pin (P) is secured to curved link K and
projects through a long radial hole (T.) in disc (D.) over the edge of oam (E.)
which serves a two-fold purpose, now to be briefly explained.
By the combined action of all the links (J KL) and disc (D) under the influence
of pin (M.) in the balance wheel, the balanced fulcrum of link (L.) ensures a perfect.
grip of the needle shaft, when revolving in the forward (N.) direction: and when
moving in the backward (O.) direction, the engaging point of link (L.) is raised just
clear of the teeth of wheel (A.) and the link (K.) is also raised until its check
pin (P.) arrives at the outward end of its long radial hole (T) in disc (D.) as
shown in Figs. 2. and 3; and thus, while all the links (J K L) and disc (D.).
revolve in the backward (O) direction, the needle shaft itself becomes instantly
at rest.
The machine is put "out of gear" or for bobbin or spool winding, by simply
turning the swelled part of cam (E) under the check pin (P.) as far as its arc (Q)
and by reversing the process until its are (R.) arrives at the stop pin (S) it is again
put "in gear." A small steel spring (formed out of "piano wire," about 1 in.
Tong) secured at one end to cum (E), and bent to press on the rim of disc (D) and
to fall at its other end into a groove thereon at each end of its radial sweep,-
will retain the cam (E.) in either of its required positions when machine is iu.
motion.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what inauner the saine is to be performed, 1 declare that what !
claim is :
First. The extension of needle shaft, with its nut, required to carry and secure-
the several parts of these improvements thoreon, consisting of the angular toothed
wheel, the steel bush, the friction washer, and receased collar.
Second. The disc and its arrangement of links thereon, as also their connection.
by actuating pin to balance wheel.
"
Third. The arrangement of cam and its handle, adjacent to disc, for putting-
"in or out of gear as may be required, substantially as, and for the purposes-
herein set forth and shewu in the figures of the accompanying drawing.
Dated this 14th day of December 1896.
JOSEPH HIGHAM..