IMPROVEMENTS IN BOBBINS
Year: 1884

page_text: I JOSEPH THOMAS DAVIS of Coborn Road, Bow, London E. Rope and Cordage
Manufacturer do hereby declare the nature of the said invention for IMPROVEMENTS
IN BOBBINS to be as follows:-
The improvements relate more particularly to a kind of Bobbin used in a
Spinning Machine known to the Rope and Cordage Manufacturers as "Goods
Automatic Spinner." These Bobbins run at a high speed will weigh when filled
12 lbs more or less; they are rotated by the action of the flyer and the thread
being spun, and have a positive connection to a flange on the tension-shaft through
the intervention of a stud pin which enters a socket in one of the heads of the
Bobbin. Heretofore the Bobbins in common use have been made of wood and, if
dropped when filled, the heads are liable to break and in every case are subject to
rapid deterioration.
The object of my invention is to provide at less cost a very much more durable
Bobbin, which I construct in the following manner :-The barrel of the improved
Bobbin is of wood, and has four longitudinal grooves in its periphery at equal
distance from each other. Each end of the barrel is for a short distance reduced
in diameter leaving shoulders at right angles to the axis of the barrel; in place of
the wood heads heretofore in common use, I provide metal discs (of suitable
thickness) but preferably of mild steel. These discs are bored to the smaller
diameter of the ends of the barrels and when in position rest against the shoulders
before mentioned and are firmly held in position by four small metal rods lying in
the longitudinal grooves in the barrel, each end of these rods extends through the
onetal discs and is firmly riveted thereto.
The distinctive feature of my invention is in the manner in which I provide a
socket or receptacle in one or both of the metal discs required for each bobbin to
receive a stud or connecting pin. This socket is cup-shaped and is formed in the
inner face of the discs, and is of suitable depth to receive the head of the connecting
pin, the bottom of this socket is of such diameter that when centrally perforated for
the connecting pin there remains an annular flange parallel with the face of the
disc and of sufficient width to accomodate the head of the connecting pin or to'
engage in a circumferential groove cut near to the end of the pin. In forming
this socket in the manner described without any addition of metal, a perfect
balance is maintained, which is important where heavy Bobbins are used running
at high speed; this with the added advantage, gained by this method of con-
struction, of increased durability and the entire avoidance of trouble from extra
parts-rivet heads otc-makes this simple invention one of considerable importance.
Dated this 11th day of June 1884

page_text: COMPLETE SPECIFICATION.
I JOSEPH THOMAS DAVIS of Coburn Road Bow London E Rope and Cordage
Manufacturer do hereby declare the nature of my invention for IMPROVEMENTS IN
BOBBINS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
-
The Improvements relate more particularly to a kind of Bobbin used in a
Spinning Machino known to the Rope and Cordage Manufacturers as "Goods
Automatic" Spinner-These bobbins run at a high speed will weigh when filled
12 lbs more or less; they are rotated by the action of the flyer and the thread
being spun, and have a positive connection to a flange on the tension shaft, through
the intervention of a stud pin which enters a socket in one of the heads of the 1
bobbin.
Heretofore the Bobbins in common use have been made of wood and if dropped
when filled the heads are liable to break and in every case are subject to a rapid
deterioration.
The object of my invention is to provide at minimum cost a much more durable 1
bobbin which I construct in the manner hereinafter described reference being had
to the accompanying drawing and to the letters of reference marked thereon, the
same letters indicating corresponding parts in the several figures.
C
Figure 1 at the left, shews the improved bobbin with one head in section, at 'the
right the parts of the machine are shewn to which the bobbin has a positive 2
connection. a the wood-barrel a longitudinal grooves in its periphery-b metal
discs (one in section) which forms the heads of the bobbins a socket for connecting
pin formed in and of the metal heads-d central perforations in the sockets-
6 annular flange surrounding the central perforation "e"-f. connecting pin-
g circumferential groove in the pin- tension flange-i tubular shaft to which 2
flange "h" is fixed-j. spindle which carrys the bobbin and around which the
shaft "i" is free to move.
Figure 2 is cross section of the wood barrel on line C D and shews the grooves
in the barrel and the metal rods & which secures the heads to the barrels.
Figure 3 is view of one of the heads on lino A B and shews one form of socket- 3
central perforation and the way that the connecting pin engages with the annular
flange "e" and rivet heads of rods k.
Figure 4 is a similar view of one of the heads shewing another form of socket
and central perforation.
Figure 5 is a sectional view of a bobbin with wood hends as heretofore 8
constructed shewing the usual method of forming socket and annular flange to
engage with the pin.
As shown by the drawing the barrel of the improved bobbin is of wood and has
four longitudinal grooves "u" in its periphery, at equal distance from each other;
Each end of the barrel is for a short distance reduced in diameter, having 4
shoulders at right angles to the axis of the barrel-In place of the wood heads
heretofore in common use, I provide metal discs "b" (of suitable thickness) but
preferably of mild steel; these discs are bored to fit the smaller diameter of the

page_text: ends of the barrel and when in position rest against the shoulders before mentioned
and are firmly secured by the metal rods "k" which lie in the longitudinal grooves,
The ends of these rods extend through the metal discs and are firmly rivited
thereto. A distinctive feature of my invention is in the manner in which I provide
a socket or receptacle in one or both of the heads or metal discs required for each
bobbin to receive the stud or connecting pin "f"
This socket is cup shaped and is formed of suitable depth in the face of the discs
to receive the head or end of the connecting pin; the bottom of this socket is of
such diameter or dimension that when centrally perferated for the connecting pin,
thero remains an annular flange parallel with the face of the disc and of sufficient
width to accommodate the head of a connecting pin or to engage in the circum-
ferential groove cut near to the end of the pin-In forming this socket in the
manner described without additional metal a perfect balance is maintained which
is important where heavy bobbins are used running at high speed.
This method of construction gives a greatly increased durability, in fact makes
an almost indestructable bobbin.
The drawings as described shews the application of my invention to bobbins for
a special machine, but it will be evident that the invention is applicable to any
bobbins with metal heads that requiro to engage with a pin and thereby forming a
positive connection to another moving part.
I do not confine myself to any particular form or depth of socket, as these may
be varied without departing from the principle of my invention-I am aware that
prior to my invention, bobbins with metal heads have been used and therefore do
not claim such broadly.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1st In the construction of bobbins with metal heads, forming the socket or
receptacle in the heads of the bobbin for the connecting or actuating pin of the
same material without additional parts and with little or no additional. weight
substantially as described and shewn.
2nd In the construction of bobbins the combination of wood barrels, metal heads
baving sockets or receptacles formed in and of the metal constituting the heads,
and the rods securing the heads to the barrels in the manner and for the purposes
specified substantially as described and shewn.
Dated this 9th day of March 1885